CN112869922A - Outer tube assembly, lumen device and conveyer - Google Patents

Abstract

The present invention relates to an outer tube assembly. The outer tube assembly is used for accommodating an implant and comprises a first part and a second part connected with the first part, the implant slides through the first part and rotates by a first angle, the implant slides through the second part and rotates by a second angle, after the implant slides through the first part and the second part, the posture of the covered stent is kept consistent with a preset posture, wherein the direction of the first angle is opposite to the direction of the second angle. The covered stent slides the first part and then rotates by a first angle, the covered stent is different from the preset posture, and the difference between the covered stent and the preset posture is the first angle; sliding the stent graft over the second portion and fully released rotates a second angle. The posture of the covered stent released by the human body is kept consistent with the preset posture. The covered stent is prevented from being different from the preset posture, and the covered stent cannot be normally implanted into a human body to cause operation failure.

Description

Outer tube assembly, lumen device and conveyer

Technical Field

The invention relates to the field of medical instruments, in particular to an outer tube assembly, a lumen device and a conveyor.

Background

At present, the covered stent is generally arranged in a sheath, and moves to a diseased part of a human body along with the sheath. During the process of loading the stent graft into the sheath or during the process of moving the stent graft inside the sheath, friction may exist between the stent graft and the sheath. Whereas conventional sheaths are typically formed by a helical extension of a spring. Frictional force between covered stent and the sheath pipe can make covered stent rotate along spring spiral extending direction, and covered stent is different and leads to the operation to fail in human position and predetermined position.

Disclosure of Invention

In view of this, it is desirable to provide an outer tube assembly that prevents rotation of the stent.

The outer tube assembly is used for accommodating an implant and comprises a first part and a second part connected with the first part, the implant slides through the first part and rotates by a first angle, the implant slides through the second part and rotates by a second angle, after the implant slides through the first part and the second part, the posture of the covered stent is kept consistent with a preset posture, wherein the direction of the first angle is opposite to the direction of the second angle.

The covered stent slides the first part and then rotates by a first angle, the covered stent is different from the preset posture, and the difference between the covered stent and the preset posture is the first angle; sliding the stent graft over the second portion and fully released rotates a second angle. The posture of the covered stent released by the human body is kept consistent with the preset posture. The covered stent is prevented from being different from the preset posture, and the covered stent cannot be normally implanted into a human body to cause operation failure.

Drawings

Fig. 1 is a schematic structural diagram of an outer tube assembly provided in a first embodiment.

Fig. 2 is an enlarged schematic view of the cross section in fig. 1.

Fig. 3 is a partially enlarged schematic view at I in fig. 1.

Fig. 4 is a partially enlarged schematic view of the point I in fig. 1 according to another embodiment.

Fig. 5 is a schematic structural view of the transition portion in fig. 4.

Fig. 6 is a schematic structural diagram of an outer tube assembly according to a second embodiment.

Fig. 7 is a schematic structural diagram of an outer tube assembly provided in a third embodiment.

Fig. 8 is a partially enlarged view of fig. 7 at II.

Fig. 9 is a partially enlarged schematic view of the second embodiment shown in fig. 7.

Fig. 10 is a schematic structural view of an outer tube assembly according to a fourth embodiment.

Fig. 11 is a schematic structural view of a lumen device provided by the fifth embodiment.

Fig. 12 is a schematic structural view of a conveyor according to a sixth embodiment.

Fig. 13 is a schematic view of the handle assembly of fig. 12.

Fig. 14 is a schematic structural view of a lumen device according to a seventh embodiment.

Fig. 15 is a schematic structural view of a conveyor according to an eighth embodiment.

Fig. 16 is a schematic structural view illustrating the sliding of the second control member in fig. 15.

Fig. 17 is a schematic structural view illustrating a sliding motion of the first control member of fig. 15.

FIG. 18 provides a ninth embodiment of a lumen device in distal end cutaway view.

Fig. 19 is a partially enlarged schematic view at I in fig. 18.

FIG. 20a is an enlarged partial schematic view at I of a lumen device provided in another embodiment. FIG. 20b is a schematic representation of a cross-section of an outer tube in a lumen device provided in another embodiment.

Fig. 20c is an enlarged partial view at X of fig. 20 b.

Fig. 21 is an enlarged schematic view at I of the lumen device provided in the tenth embodiment.

Fig. 22 is an enlarged schematic view at I of the lumen device provided in the eleventh embodiment.

FIG. 23 is a schematic view of the proximal end of the lumen device provided in the twelfth embodiment.

FIG. 24 is a schematic view of the proximal end of a lumen device in another embodiment.

Fig. 25 is an enlarged schematic view at II in fig. 24.

Fig. 26a is a schematic view illustrating a connection process of a first fixing portion and a second fixing portion in another embodiment.

Fig. 26b is a schematic structural diagram of a first fixing portion in another embodiment.

FIG. 26c is a top view of the first fixing portion in another embodiment.

FIG. 27 provides an enlarged schematic view of the proximal end of the lumen device at II according to another embodiment.

FIG. 28 is an enlarged schematic view of the proximal end of the lumen device at II provided by yet another embodiment.

Fig. 29 is a schematic structural view of a conveyor according to the thirteenth embodiment.

Fig. 30 is a partial structural view of a lumen device according to a fourteenth embodiment.

Fig. 31 is an enlarged view at III in fig. 30.

FIG. 32 is a schematic view of a portion of a lumen device according to another embodiment.

Fig. 33 is a partial structural view of a lumen device according to a fifteenth embodiment.

Fig. 34 is an enlarged cross-sectional view of fig. 33.

Fig. 35 is a partial structural view of a lumen device according to a sixteenth embodiment.

Fig. 36 is a partial schematic structural view of a conveyor according to the seventeenth embodiment.

FIG. 37 is a schematic structural view of a stent graft according to the eighteenth embodiment.

FIG. 38 is a schematic structural view of a stent graft provided in the nineteenth embodiment.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

In the field of interventional medical devices, the "distal end" is defined as the end that is distal from the operator during the procedure, and the "proximal end" is defined as the end that is proximal to the operator during the procedure. "axial" refers to a direction parallel to the line joining the centers of the distal and proximal ends of the medical device, and "radial" refers to a direction perpendicular to the axial direction.

Referring to fig. 1, the present embodiment provides anouter tube assembly 1. Theouter tube assembly 1 has aproximal end 1A and adistal end 1B opposite theproximal end 1A. Theouter tube assembly 1 is used to receive an implant. The implant is not limited to stent grafts, occluders or the like. The implant is housed within theouter tube assembly 1. Specifically, the implant is housed at thedistal end 1B of theouter tube assembly 1. This example is illustrated with an implant as a stent graft.

The stent graft slides from theproximal end 1A of theouter tube assembly 1 to thedistal end 1B of theouter tube assembly 1, and the posture of the stent graft at thedistal end 1B of theouter tube assembly 1 is consistent with the posture of the stent graft before being loaded into the outer tube assembly 1 (hereinafter referred to as "preset posture"). In the present embodiment, theouter tube assembly 1 comprises afirst portion 11 and asecond portion 12 connected to thefirst portion 11. After the stent graft slides over thesecond portion 12, thefirst portion 11 and is completely released from thedistal end 1B, the posture of the stent graft is kept consistent with the preset posture. Specifically, in the present embodiment, the stent graft slides through thefirst portion 11 and then rotates by a first angle, the stent graft is different from the preset posture, and the stent graft is different from the preset posture by the first angle; sliding the stent graft over thesecond portion 12 and fully released rotates a second angle.

The gesture of the covered stent after being completely released is kept consistent with the preset gesture, namely, the gesture of the covered stent after being completely released is completely the same as the preset gesture; or the deviation of the posture of the covered stent after the covered stent is completely released from the preset posture is within the preset range, and the operation of a doctor is not influenced within the preset range. In the present embodiment, the preset range is an interval between negative 45 ° and positive 45 °. In other embodiments, the predetermined range is an interval between minus 5 ° and 5 °.

In this embodiment, the second angle is in the opposite direction to the first angle. The size of the second angle is the same as that of the first angle; or the size of the second angle is close to the same size as the first angle, so that the tectorial membrane support keeps consistent with the preset posture after rotating the first angle and the second angle, and the operation of a doctor is not influenced.

The second angle is equal in magnitude and opposite in direction to the first angle. That is, the stent graft is loaded into theproximal end 1A of theouter tube assembly 1 in a preset posture, slid from theproximal end 1A of theouter tube assembly 1 to thedistal end 1B of theouter tube assembly 1, and then released from thedistal end 1B of theouter tube assembly 1 to the human body, each part of the stent graft is rotated on the second part by a second angle, and then rotated on the first part by a first angle, and the posture of the stent graft released from the human body is kept consistent with the preset posture. The covered stent is prevented from being different from the preset posture, and the covered stent cannot be normally implanted into a human body to cause operation failure. The preset posture can be adjusted according to the operation habit of a doctor, and the posture released to the human body by the covered stent is kept consistent with the preset posture.

As will be appreciated, when the stent graft is slid to the distal end of theouter tube assembly 1, the portion of the stent graft adjacent to thesecond portion 12 is not corrected to the preset position because it has not slid through thefirst portion 11; however, during the process of gradually releasing the stent graft from theouter tube assembly 1 to the human body, the portion completely slides through thefirst portion 11, is corrected to a predetermined posture, and then is released to the human body.

In the present embodiment, the length of thefirst portion 11 in the axial direction and the length of thesecond portion 12 in the axial direction are both longer than those of the stent graft.

In the present embodiment, thefirst portion 11 is formed by spirally extending the firstelastic member 111. Similarly, thesecond portion 12 is formed by a second elastic member extending spirally. The firstelastic member 111 and the second elastic member are both elastic members. In this embodiment, the firstelastic member 111 and the second elastic member are both springs. The spring may improve the bending resistance of the overallouter tube assembly 1. In the present embodiment, thefirst portion 11 is formed by a first spring helical extension. Thesecond portion 12 is formed by a second spring helical extension. The first spring includes a plurality of connected first spring coils and the second spring includes a plurality of connected second spring coils. It is understood that the first and second coils are not limited to metal, but may be made of non-metal, alloy, etc.

In the present embodiment, the direction in which thefirst portion 11 extends helically is right-handed. The direction in which thesecond portion 12 extends helically is left-handed. Specifically, the spiral direction of the first spring is right spiral, and the spiral direction of the second spring is left spiral. In another embodiment, the direction of the spiral of the first spring may be left spiral, and the direction of the spiral of the second spring may be right spiral.

It will be appreciated that the other characteristics of thefirst portion 11 and thesecond portion 12 are the same except for the direction of helical extension, subject to the stent graft being rotated through an angle equal to the angle of rotation of thefirst portion 11 and thesecond portion 12. I.e. the magnitude of the second angle, is equal to the magnitude of the first angle. Specifically, the length of thefirst portion 11 in the axial direction is the same as the length of thesecond portion 12 in the axial direction. Referring to fig. 1, in the present embodiment, the axial direction of theouter tube assembly 1 is parallel to the X-axis direction. The pitch of thefirst portion 11 is the same as the pitch of thesecond portion 12. The diameter of the spring in thefirst portion 11 is equal to the diameter of the spring in thesecond portion 12.

In other embodiments, one or more of the above-described characteristics may be different, subject to the stent graft being rotated through an angle equal to the angle of rotation of thefirst portion 11 and thesecond portion 12. Specifically, for example, the pitch of thefirst portion 11 is smaller than the pitch of thesecond portion 12; the length of thefirst part 11 in the axial direction is greater than the length of thesecond part 12 in the axial direction, but the bracket is rotated in thefirst part 11 by the same amount as thesecond part 12.

In the present embodiment, the length of thefirst portion 11 is the same as the length of thesecond portion 12. Specifically, in the present embodiment, the length of thefirst portion 11 in the axial direction and the length of thesecond portion 12 in the axial direction are both half of the length of theouter tube assembly 1 in the axial direction. The length of thefirst portion 11 in the axial direction and the length of thesecond portion 12 in the axial direction are both greater than the length of the stent graft in the axial direction.

Referring to fig. 2, theouter tube assembly 1 further includes anouter layer 1C. Theouter layer 1C covers the outer wall of thefirst portion 11 and the outer wall of thesecond portion 12. Theouter tube assembly 1 further comprises aninner layer 1D, theinner layer 1D being disposed opposite theouter layer 1C. Theinner layer 1D covers the inner wall of thefirst portion 11 and the inner wall of thesecond portion 12. Thefirst portion 11 and thesecond portion 12 are disposed between theouter layer 1C and theinner layer 1D. Theouter layer 1C and theinner layer 1D are engaged with each other to fix thefirst part 11 and thesecond part 12, thereby preventing thefirst part 11 and thesecond part 12 from being separated from each other. The material of theouter layer 1C is not limited to a polymer material. In particular, in the present embodiment, theouter layer 1C is made of a polyether block polyamide material (PEBAX), giving theouter tube assembly 1 the properties of elasticity and resistance to wear. Theinner layer 1D is not limited to a polymer material. Specifically, in the present embodiment, it is made of Polytetrafluoroethylene (PTFE). The surface of theinner layer 1D is smooth, and the friction force between the bracket and theinner layer 1D can be reduced. In this embodiment, portions of theouter layer 1C and portions of theinner layer 1D fill the spaces between the plurality of first coils in thefirst portion 11 and the spaces between the plurality of second coils in thesecond portion 12, making the spaces between thefirst portion 11, thesecond portion 12, theinner layer 1D, and theouter layer 1C more compact. Specifically, in the present embodiment, theouter layer 1C and theinner layer 1D are fixed together by heat fusion, and thefirst portion 11 and thesecond portion 12 are fixed. It is understood that in other embodiments, theouter layer 1C and theinner layer 1D are not limited to being fixed by heat fusion or the like, and may be fixed by adhesion.

Referring to fig. 3, in the present embodiment, thefirst portion 11 and thesecond portion 12 are axially arranged. Thefirst portion 11 has afirst end 112, thefirst end 112 being adjacent thesecond portion 12. Thesecond portion 12 has asecond end 122, thesecond end 122 being adjacent to thefirst portion 11. Thefirst end 112 is connected to thesecond end 122, and thefirst end 112 and thesecond end 122 are flush with each other. Thefirst end 112 and thesecond end 122 are flush with each other, meaning that thefirst end 112 interfaces smoothly with thesecond end 122. Specifically, thefirst end 112 is perpendicular to the axial direction of theouter tube assembly 1, and thesecond end 122 is perpendicular to the axial direction of theouter tube assembly 1, so that thefirst end 112 can be smoothly fitted on thesecond end 122, and the stent graft can be smoothly slid from thesecond portion 12 to thefirst portion 11.

In another embodiment, referring to fig. 4, thefirst end 112 and thesecond end 122 are inclined to each other. Such that alarger gap 14 exists at the junction between thefirst end 112 and thesecond end 122. Thegap 14 may reduce the flexural strength between the first andsecond portions 11, 12 and may reduce the strength of theouter tube assembly 1 in the area between the first andsecond portions 11, 12, and the stent graft may easily expand radially outward by sliding through thegap 14 and become lodged between the first andsecond portions 11, 12.

Referring to fig. 4 and 5, theouter tube assembly 1 further comprises atransition portion 15 connected between thefirst portion 11 and thesecond portion 12. Thetransition portion 15 has a hollow annular structure. Opposite ends of thetransition portion 15 respectively abut thefirst end 112 of thefirst portion 11 and thesecond end 122 of thesecond portion 12. Thetransition part 15 improves the bending strength between thefirst part 11 and thesecond part 12 in theouter pipe assembly 1, improves the strength of theouter pipe assembly 1 in the area between thefirst part 11 and thesecond part 12, and thefirst part 11 and thesecond part 12 are not easy to bend; and allows the stent graft to more smoothly pass through the connection between thefirst end 112 and thesecond end 122. It will be appreciated that in this embodiment, thetransition portion 15 is made of the same material as the first andsecond portions 11, 12. Thetransition portion 15 includes a first side 151 and a second side 152 opposite the first side 151, the first side 151 having a length in the axial direction that is greater than a length of the second side 152 in the axial direction. The first side 151 is provided with an opening 153, and the size of the opening 153 gradually decreases in a direction from the first side 151 to the second side 152. The opening 153 facilitates receiving a portion of theinner layer 1D and a portion of theouter layer 1C such that the inner and outer surfaces of thetransition portion 15 are wrapped by theinner layer 1D and theouter layer 1C, and thetransition portion 15 is not easily released from between theouter layer 1C and theinner layer 1D.

Second embodiment

Referring to fig. 6, a second embodiment of the present application is substantially the same as the previous embodiment, except that thefirst portion 11 includes a plurality offirst sub-portions 113 arranged at intervals. Thesecond portion 12 includes a plurality of spaced apart second sub-portions 123. The plurality offirst sub-portions 113 are alternately arranged with the plurality of second sub-portions 123, and the adjacentfirst sub-portions 113 are connected with the second sub-portions 123.

In this embodiment, thefirst sub-portions 113 are all shorter in axial length than thefirst portion 11, and the stent graft rotates less than a first angle after sliding through thefirst sub-portions 113; the second sub-portions 123 are each shorter in axial length than thesecond portion 12, and the stent graft is rotated through an angle less than a second angle after sliding through the second sub-portions 123. The rotation angles of the covered stent in theouter tube component 1 are both smaller than the first angle and the second angle. It can be understood that the larger the angle of rotation of the stent graft on theouter tube assembly 1, the larger the contact area of the stent graft and the inner wall of theouter tube assembly 1, and the larger the extent of damage to the inner wall of theouter tube assembly 1 caused by the friction force between the stent graft and theouter tube assembly 1. Theouter tube assembly 1 in this embodiment can reduce the rotation angle of the stent graft in theouter tube assembly 1, and further can reduce the damage range of the inner wall of theouter tube assembly 1.

It will be appreciated that the direction of helical extension of the plurality offirst sub-portions 113 remains uniform; the direction of helical extension of the plurality of second sub-portions 123 also remains uniform. The other characteristics of the first sub-portions 113 and the second sub-portions 123 may be the same or different, based on the sum of the rotation angles of the stent graft sliding over the first sub-portions being equal to the sum of the rotation angles of the stent graft sliding over the second sub-portions 123, and based on the direction of the rotation angles of the stent graft sliding over the first sub-portions being opposite to the direction of the rotation angles of the stent graft sliding over the second sub-portions 123.

In this embodiment, the number of thefirst sub-portions 113 is equal to the number of the second sub-portions 123, and the length of thefirst sub-portions 113 is equal to the length of the second sub-portions 123. The number of thefirst sub-parts 113 and the number of the second sub-parts 123 are even and 2 or more.

Third embodiment

Referring to fig. 7 and 8, theouter tube assembly 1 of the present embodiment may be substantially the same as the above embodiments, except that theouter tube assembly 1 further includes athird portion 13. Thethird portion 13 is connected to thesecond portion 12. Thethird portion 13 is distal to thefirst portion 11 relative to thesecond portion 12, and thethird portion 13 is closer to theproximal end 1A of theouter tube assembly 1 than thesecond portion 12. Thesecond section 12 is connected between thefirst section 11 and thethird section 13. Thefirst portion 11, thesecond portion 12, and thethird portion 13 are arranged in this order in the axial direction from thedistal end 1B to theproximal end 1A of theouter tube assembly 1. In this embodiment, thethird portion 13 is disposed at theproximal end 1A of theouter tube assembly 1. In this embodiment, since thethird portion 13 is formed by interweaving a plurality of wires and is not formed by spirally extending an elastic member, the stent graft slides in thethird portion 13, the stent graft does not rotate, and the rotation angle of the stent graft is reduced. And thethird part 13 is formed by interweaving a plurality of threads, thethird part 13 has higher torque transmission efficiency. Thethird portion 13 can improve the efficiency of theouter tube assembly 1 in transmitting torque overall, given the same overall length of theouter tube assembly 1.

It will be appreciated that thesecond portion 12 is adjacent an end face of thethird portion 13, and is connected to an end face of thethird portion 13 adjacent thesecond portion 12. The connection manner of thethird portion 13 and thesecond portion 12 is not limited to bonding. The end face of thesecond portion 12 adjacent thethird portion 13 is flush with the end face of thethird portion 13 adjacent thesecond portion 12. That is, the end face of thesecond portion 12 near thethird portion 13, perpendicular to the axial direction of theouter tube assembly 1; thethird portion 13 is adjacent to the end face of thesecond portion 12, perpendicular to the axial direction of theouter tube assembly 1.

In another embodiment, referring to fig. 9, the end of thethird portion 13 close to thesecond portion 12 is attached to thesecond portion 12, so as to prevent thethird portion 13 and thesecond portion 12 from being hollowed out, thereby reducing the strength between thesecond portion 12 and thethird portion 13 of theouter tube assembly 1, and preventing the stent graft from sliding through the area and easily expanding radially outward to be clamped between thesecond portion 12 and thethird portion 13. In particular, thesecond portion 12 is close to the end face of thethird portion 12, not perpendicular to the axial direction of theouter tube assembly 1. And a portion of thethird portion 13, which is convexly inclined toward thesecond portion 12 to fit thesecond portion 12.

Fourth embodiment

Referring to fig. 10, the present embodiment is substantially the same as the previous embodiment, except that theouter tube assembly 1 further includes athird portion 13. Thethird portion 13 is connected to thefirst portion 11. Thethird portion 13 is disposed on a side of thefirst portion 11 away from thesecond portion 12, and thethird portion 13 is closer to thedistal end 1B of theappearance member 1 than thefirst portion 11. Thethird portion 13, thefirst portion 11, and thesecond portion 12 are arranged in this order in the axial direction. In this embodiment, thethird portion 13 is disposed at thedistal end 1B of theouter tube assembly 1. The length of thethird portion 13 in the axial direction is greater than the maximum compressed length of the stent graft in the axial direction. The maximum compressed length refers to the distance between the two ends of the stent graft that are farthest in the early axial direction in the compression loadingouter tube assembly 1.

Or equal to the length of the stent graft such that the stent graft can be fully received in thethird portion 13. Thethird portion 13 is more efficient at transferring torque than thesecond portion 12, and thefirst portion 11. Thethird portion 13 may improve the efficiency of theouter tube assembly 1 in transferring torque, given the same overall length of theouter tube assembly 1. Moreover, since thethird portion 13 is not formed by the elastic member extending helically, but by a plurality of wires woven in a staggered manner, the stent graft does not rotate during sliding in thethird portion 13. On the one hand, when the stent graft slides from the proximal end of theouter tube assembly 1 to the distal end of theouter tube assembly 1, the stent graft does not rotate in thethird portion 13, ensuring that the stent graft is consistent with the preset posture. On the other hand, when the stent graft is loaded from outside theouter tube assembly 1 directly into thethird section 13 of theouter tube assembly 1, the stent graft will not rotate.

Fifth embodiment

Referring to fig. 11, the present embodiment provides alumen device 10, in the present embodiment, thelumen device 10 includes a fixingmember 3 and theouter tube assembly 1 in any of the above embodiments. The fixingmember 3 is connected to theouter tube assembly 1. Specifically, the fixingmember 3 has an inner cavity. The near end of theouter tube component 1 is inserted into the inner cavity of the fixingpiece 3 and is fixedly connected with the inner wall of the inner cavity.

Sixth embodiment

Referring to fig. 12 and 13, the present embodiment provides adelivery apparatus 100, thedelivery apparatus 100 includes ahandle assembly 20 and alumen device 10 as provided in the fifth embodiment. Thehandle assembly 20 is connected to thelumen device 10. Specifically, thehandle assembly 20 has a receiving cavity. Thefirst fixing member 3 and the distal end of theouter tube assembly 1 are received in the receiving cavity of thehandle assembly 20. Theconveyor 100 in this embodiment slides the stent graft to the distal end of theouter tube assembly 1, and does not rotate after sliding out of the distal end of theouter tube assembly 1, so that the stent graft can be kept consistent with a preset posture, and operation failure caused by the difference between the posture of the stent graft and the preset posture is avoided.

Seventh embodiment

Referring to fig. 14, the present embodiment is substantially the same as thelumen device 10 provided in any of the above embodiments, except that in the present embodiment, thelumen device 10 includes anouter tube assembly 1 and aspacer assembly 4 connected to theouter tube assembly 1. Theisolation assembly 4 is detachably connected with theouter tube assembly 1. Theisolation component 4 is used for isolating theouter tube component 1 and the coveredstent 2, and prevents the coveredstent 2 from rotating due to the fact that the coveredstent 2 abuts against theouter tube component 1 in the sliding process of theouter tube component 1.

In the present embodiment, theisolation member 4 is inserted into theouter tube member 1 and is detachable from theouter tube member 1. The outer diameter of theisolation assembly 4 is smaller than the inner diameter of theouter tube assembly 1 and theisolation assembly 4 is slidable within theouter tube assembly 1. Theisolation component 4 is a hollow tubular structure, the coveredstent 2 is accommodated in theisolation component 4, and theisolation component 4 separates the outer wall of the coveredstent 2 from the inner layer of theouter tube component 1. The inner surface and the outer surface of theisolation component 4 are smooth, the friction force between theisolation component 4 and theouter pipe component 1 is small in the process that theisolation component 4 slides in theouter pipe component 1, and theisolation component 4 is not easy to rotate around the axis of theouter pipe component 1; and in the process of installing the coveredstent 2 into theisolation component 4, the coveredstent 2 can not rotate around the axis of theisolation component 4. It is understood that in one embodiment, the material of theisolation member 4 is made of a polymer material, and is not limited to Fluorinated ethylene propylene copolymer (FEP), in particular.

In another embodiment, at least one of the inner or outer walls of theinsulation component 4 is coated with a lubricious layer; the smooth layer coated on the inner wall of theisolation assembly 4 is used for reducing the friction force between the inner wall of theisolation assembly 4 and the coveredstent 2 and preventing the coveredstent 2 from rotating in the process of transferring theisolation assembly 4 into theisolation assembly 4; the smooth layer of coating at the 4 outer walls of isolation component is used for reducing the frictional force betweenisolation component 4 and theouter tube subassembly 1, makesisolation component 4 difficult the emergence rotate round the axle center ofouter tube subassembly 1, avoids 1 inner wall of outer tube subassembly damaged simultaneously, avoids the piece of the damaged formation of outer tube subassembly to form the thrombus in the human body. It is to be understood that the material of the smoothing layer is not limited to Polytetrafluoroethylene (PTFE) or polyvinylpyrrolidone (PVP).

In this embodiment, theisolation assembly 4 is slidable within theouter tube assembly 1, sliding thestent graft 2 housed within theisolation assembly 4 to thedistal end 101 of theouter tube assembly 1. Specifically, thestent graft 2 is housed within theisolation assembly 4, with the position of thestent graft 2 within theisolation assembly 4 remaining unchanged; inserting theisolation component 4 into theouter tube component 1, and sliding theisolation component 4 along the extending direction of theouter tube component 1; the coveredstent 2 also slides along with theisolation component 4 in the extending direction of theouter tube component 1; theisolation assembly 4 slides thestent graft 2 to thedistal end 101 of theouter tube assembly 1; after thestent graft 2 is positioned at thedistal end 101 of theouter tube assembly 1, theisolation assembly 4 is withdrawn from theouter tube assembly 1, eventually allowing thestent graft 2 to be deployed without deflection at thedistal end 101 of theouter tube assembly 1.

Eighth embodiment

Referring to fig. 15 to 17, the present embodiment provides aconveyor 100. Thetransporter 100 includes ahandle arrangement 20 and alumen device 10 as provided in the seventh embodiment.Lumen device 10 and handledevice 20. Specifically, thehandle device 20 includes afirst control member 20A and asecond control member 20B adjacent to thefirst control member 20A.Outer tube assembly 1 includes anouter tube 1A and afirst fastener 1B attached to aproximal end 102 ofouter tube 1A. Thefirst fixing part 1B is connected with thefirst control part 20A, and thefirst control part 20A controls the first fixingpart 1B and the outer pipe assembly to axially slide.Spacer assembly 3 includes aspacer 3A and asecond fastener 3B attached to aproximal end 302 ofspacer 3A. The secondfixed part 3B is connected with thesecond control part 20B, and thesecond control part 20B controls the secondfixed part 3B and the isolation component to axially slide.

In this embodiment, under the condition that the axial positions of the first fixingmember 1B, theouter tube 1A, and thefirst control member 20A are not changed, thesecond control member 20B slides in the positive direction of the X axis to drive the second fixingmember 3B and thespacer 3A to slide relative to the first fixingmember 1B, so that the stent-graft is placed at the distal end of theouter tube 1. And then, thefirst control part 20A slides towards the positive direction of the X axis, thefirst control part 20A drives the first fixingpart 1B and theouter pipe part 1A to slide towards the positive direction of the X axis, and the coveredstent 2 at the far end of theouter pipe part 1A is released into a human body.

In other embodiments, theisolation assembly 3 is detachable from thehandle device 20. That is, thespacer 3A and the second fixingmember 3B are detachable from thehandle device 20. Specifically, thestent graft 2 is fitted into thepartition 3A. The isolatingpiece 3A extends from the proximal end of thehandle device 20 and is inserted into theouter pipe piece 1A; pushing thesecond fixing member 3A, and sliding thestent graft 2 to thedistal end 101 of theouter member 1A by thespacer member 3A; then the isolatingpiece 3A slides towards the near end of the outer pipe fitting 1A, and the isolatingcomponent 3 places the coveredstent 2 at the far end of theouter pipe component 1; thereafter, the isolatingmember 3A and the second fixingmember 3B continue to slide toward the proximal end of theouter tube 1A until the isolatingmember 3A and the second fixingmember 3B are disengaged from thehandle device 20.

Ninth embodiment

Referring to fig. 18 and 19, thelumen device 10 of the present embodiment is substantially the same as the seventh embodiment, except that in the present embodiment, theisolation member 3 is slid to the distal end of theouter tube member 1 and connected to theouter tube member 1. After thestent graft 2 is slid to the distal end of theouter tube assembly 1 by thespacer assembly 3, the distal end of thespacer assembly 3 is connected to the distal end of theouter tube assembly 1.Isolator assembly 3 comprisesisolator 3A andouter tube assembly 1 comprisesouter tube 1A.Distal end 301 ofspacer 3A is fixedly attached todistal end 101 ofouter tube 1A. Theisolator 3A slides thestent graft 2 to thedistal end 101 of theouter tube 1A, and theisolator 3A does not need to be detached from the inside of theouter tube 1A, so that the operation is reduced. In the process of releasing the coveredstent 2, the isolatingpiece 3A and theouter tube 1A are withdrawn together, friction force exists between the isolatingpiece 3A and the coveredstent 2, and the isolatingpiece 3A is not easy to shift after the isolatingpiece 3A is fixed at the far end of theouter tube 1A, so that the isolatingpiece 3A is stable at the far end of theouter tube 1A. Thespacers 3A are not liable to be recessed radially inwards, preventing the release of thestent graft 2 from being hindered by the deformation of thespacers 3A. Furthermore, after thedistal end 301 of thespacer 3A is fixedly connected with thedistal end 101 of theouter tube 1A, the strength of theouter tube 1A can be increased, so that theouter tube 1A is not prone to indent under the action of external force. In the operation process, if the gesture after thetectorial membrane support 2 releases is different with predetermineeing the gesture, can withdrawouter tube assembly 1 withtectorial membrane support 2 in, andtectorial membrane support 2 under the interval ofseparator 3A, can not contact with the inner wall ofouter tube member 1A, prevent thattectorial membrane support 2 from stabbingouter tube member 1A production piece and forming the thrombus.

It is understood that the length of thespacer 3A in the axial direction is smaller than or equal to the length of theouter pipe member 1A in the axial direction. The distal end of theouter tube assembly 1 is thedistal end 101 of theouter tube 1A.

In this embodiment, the inner wall of thedistal end 301 of theouter tube 1A is provided with a first fixingportion 11. The outer wall of thespacer 3A is provided with asecond fixing portion 31.Spacer 3A is slid todistal end 101 ofouter tube 1A with the end surface ofspacer 3A flush with the end surface of the distal end ofouter tube 1A. Thefirst fixing portion 11 and the second fixingportion 31 are engaged with each other, so that thedistal end 301 of thespacer 3A is fixed to thedistal end 101 of theouter tube 1A.

In the present embodiment, the second fixingportion 31 protrudes from the tube of thespacer 3A toward the radial direction. Thesecond fixing portion 31 is formed in a hemispherical shape. Thefirst fixing portion 11 is a through hole. Thespacer 3A slides to thedistal end 101 of theouter tube 1A, the second fixingportion 31 abuts against the sidewall of the first fixingportion 11, and the position of the second fixingportion 31 is limited by the sidewall of the first fixingportion 11, thereby fixing thespacer 3A to theouter tube 1A. It is understood that the number of thesecond fixing portions 31 is one or more, and the number of thesecond fixing portions 31 is the same as the number of thefirst fixing portions 11.

Referring to fig. 20a, the first fixingportion 11 is a blind hole or a groove. Thesecond fixing portion 31 is stepped. Thesecond fixing portion 31 extends into the first fixingportion 11 and abuts against the sidewall of the first fixingportion 11. In the present embodiment, the second fixingportion 31 is integrally formed with thespacer 3A. It is understood that in another embodiment, the second fixingportion 31 is disposed on theisolation component 3, and the second fixingportion 31 is not integrally formed with theisolation member 3A.

In other embodiments, the second fixingportion 31 is a blind hole or an open hole disposed on thedistal end 301 of thespacer 3A. Thefirst fixing portion 11 projects radially inward. Thefirst fixing portion 11 extends into the second fixingportion 31 and fixes the second fixingportion 31.

Referring to fig. 20b and 20c, in other embodiments, the first fixingportion 11 is a sliding slot, and the first fixingportion 11 extends from theproximal end 102 of theouter tube 1A to thedistal end 101 of theouter tube 1A.

Thesecond fixing portion 31 can slide along the first fixingportion 11, so that the isolatingmember 3A can slide along the first fixingportion 11 to thedistal end 101 of theouter member 1A. Thefirst fixing portion 11 guides thespacer 3A to slide toward thedistal end 101 of theouter tube 1A. And the first fixingpart 11 can limit the circumferential direction of thepartition 3A, preventing thepartition 3A from rotating. And in the process of releasing the coveredstent 2, the isolatingpiece 3A is not easy to rotate, so that the coveredstent 2 is prevented from rotating. In other embodiments, the second fixingportion 31 is provided with a protrusion, which can be abutted and fixed on the first fixing portion, so that the isolatingmember 3A is fixed on thedistal end 101 of theouter tube 1A

Tenth embodiment

Referring to fig. 21, thelumen device 10 of the present embodiment is substantially the same as the ninth embodiment except that the inner wall of thedistal end 101 of theouter tube 1A is recessed radially outward to form a first fixingportion 11. Thespacer 3A has elasticity and can expand radially outward. After thestent graft 2 is slid to the first fixingportion 11 by thespacer 3A, thespacer 3A is expanded radially outward. So that theisolation member 3A is abutted against the first fixingportion 11 and fixed on the first fixingportion 11. In the present embodiment, thespacer 3A is expanded by the radially outward expansion force of thestent graft 2 and abuts against the first fixingportion 11.

In another embodiment, thespacers 3A are resilient and thespacers 3A extend into theouter tube 1A after compression. After thespacer 3A slides to the first fixingportion 11, thespacer 3A itself recovers its shape, expands radially outward, and is fixed to the first fixingportion 11.

In a further embodiment, the outer wall of thedistal end 301 of thespacer 3A is provided with a resilient member (not shown). Thespacer 3A is accommodated in the first fixingportion 11, and the elastic member is compressed. After the isolatingpiece 3A slides to the first fixingportion 11, the elastic member expands and abuts against the first fixingportion 11, so that thedistal end 301 of the isolatingpiece 3A is fixed on the first fixingportion 11.

Eleventh embodiment

Referring to fig. 18 and 22, thelumen device 10 of the present embodiment is substantially the same as the ninth embodiment, and thelumen device 10 further includes anadhesive member 6. Theadhesive assembly 6 connects thespacer assembly 3 and theouter tube assembly 1. Specifically,adhesive assembly 6 is connected betweendistal end 101 ofouter tube 1A anddistal end 301 ofspacer 3A. That is,adhesive assembly 6 is connected between the outer wall ofspacer 3A and the inner wall ofdistal end 301 ofouter tube 1A, securingspacer 3A withinouter tube 1A.

It will be appreciated that in this embodiment, theadhesive assembly 6 is provided after thespacer 3A is slid onto theouter tube 1A. In other embodiments,adhesive assembly 6 is provided atdistal end 101 ofouter tube 1A just prior to slidingspacer 3A ontodistal end 301 ofouter tube 1A.

Specifically, in the present embodiment, the first fixingportion 11 is provided in thedistal end 301 of theouter tube 1A. Thefirst fixing portion 11 is a through hole structure. After thespacer 3A is slid to thedistal end 301 of theouter tube 1A, theadhesive assembly 6 is inserted into theouter tube 1A through the first fixingportion 11. Theadhesive member 6 is attached to the inner wall of the partialouter pipe member 1A and the outer wall of thepartial spacer 3A, and fixes thespacer 3A and theouter pipe member 1A. It will be appreciated that theadhesive assembly 6 is not limited to medical glues.

Twelfth embodiment

Referring to fig. 18 and 23, thelumen device 10 of the present embodiment is substantially the same as that of the ninth embodiment, and the proximal end of thespacer member 3 is fixedly connected to the proximal end of theouter tube member 1. That is, after thestent graft 2 is slid to thedistal end 301 of theouter tube 1A by thespacer 3A, theproximal end 302 of thespacer 3A is fixedly connected to theproximal end 102 of theouter tube 1A, so that thespacer 3A is secured to theouter tube 1A. Specifically,outer tube assembly 1 includes afirst fastener 1B coupled toproximal end 102 ofouter tube 1A.Spacer assembly 3 includes asecond fastener 3B coupled toproximal end 302 ofspacer 3A. Thespacer 3A is inserted into theouter pipe element 1A. Thesecond mount 3B is fixed to thefirst mount 1B such that theproximal end 302 of thespacer 3A is fixedly connected to the proximal end of theouter tube 1A. As can be appreciated, the proximal end of theisolation assembly 3, is theproximal end 302 of theisolator 3A.

In this embodiment, after thestent graft 2 is slid to thedistal end 101 of theouter tube 1A by thespacer 3A, the second fixingmember 3B and the first fixingmember 1B abut against each other, so that the position of thespacer 3A on theouter tube 1A is maintained. In this embodiment, the second fixingmember 3B is in interference fit with the first fixingmember 1B, so that the second fixingmember 3B is fixed in the first fixingmember 1B. It will be appreciated that the length of thespacer 3A in the axial direction is similar to the length of theouter tubular member 1A in the axial direction. That is, thespacer 3A can extend through the lumen of theouter tube 1A, from thedistal end 101 of theouter tube 1A to the proximal end of theouter tube 1A.

In another embodiment, please refer to fig. 24 and 25, the first fixingmember 1B is provided with a first fixingportion 11. Thesecond fixing member 3B is provided with asecond fixing portion 31. In the present embodiment, the second fixingportion 31 protrudes outward in the radial direction, and the first fixingportion 11 is recessed outward in the radial direction. Thesecond fixing portion 31 has elasticity. Thesecond fixing portion 31 is inserted into theproximal end 102 of theouter pipe member 1A, and the second fixingportion 31 is compressed radially inward. Thesecond fixing portion 31 gradually returns to its shape after approaching the first fixingportion 11, and abuts against the first fixingportion 11 and is fixed in the first fixingmember 1B, and thespacer 3A is also fixed in theouter member 1A.

In another embodiment, referring to fig. 26a, 26B and 26c, the first fixingportion 11 includes a guidinggroove 11A and a limitinggroove 11B communicated with the guidinggroove 11A. Thesecond fixing portion 3B slides into the limitinggroove 11B through the guidinggroove 11A and is fixed in the limitinggroove 11B. Specifically, thesecond fixing portion 3B slides into the first fixingportion 11 along theguide groove 11A; after thesecond fixing part 3B slides to the joint between theguide groove 11A and the limitinggroove 11B, the isolatingpart 3A is rotated; thesecond fixing parts 3B are staggered with theguide grooves 11A, thesecond fixing parts 3B slide into the limitinggrooves 11B, the positions of thesecond fixing parts 3B are limited by the limitinggrooves 11B, the isolatingpart 3A cannot slide continuously in the axial direction, and the positions of the isolatingpart 3A and the coveredstent 2 in the isolatingpart 3A at the far end of theouter tube component 1 are kept unchanged.

In another embodiment, referring to fig. 27, anadhesive assembly 6 is disposed between the first fixingmember 1B and the second fixingmember 3B. Theadhesive member 6 adheres the inner wall of the first fixingmember 1B and the outer wall of the second fixingmember 3B, so that the second fixingmember 3B is fixed to the first fixingmember 1B.

In another embodiment, please refer to fig. 28. Thelumen device 10 further includes a compression assembly 5. The compression assembly 5 secures the proximal end of theouter tube assembly 1 and the proximal end of thespacer assembly 3. In this embodiment, the pressing member 5 fixes the second fixingmember 3B of theisolation member 3 in the first fixingmember 1B of theouter pipe member 1. Specifically, an internal thread is arranged in the first fixingmember 1B, and a screw hole of the internal thread is connected with an inner cavity of the isolatingmember 3A. The partial press-fit assembly 5 is provided with an external thread. Part of the pressing assembly 5 extends into the first fixingpart 1B and is in threaded connection with the internal thread in the first fixingpart 1B, and part of the pressing assembly 5 abuts against the end face of the far end of thesecond fixing part 3B, so that thesecond fixing part 3B is fixed in the first fixingpart 1B. It is understood that a limiting structure (not shown) may be disposed in the first fixingmember 1B, and the limiting structure supports against an end surface of the second fixingmember 3B facing thedistal end 101 of theouter member 1A.

Thirteenth embodiment

Referring to fig. 29, the present embodiment provides aconveyor 100. Thetransporter 100 includes ahandle assembly 20 and alumen device 10 as provided in the ninth through twelfth embodiments. Thehandle assembly 20 controls theouter tube assembly 1 and thespacer assembly 3 while sliding towards the proximal end of thehandle assembly 20 to release the stent graft (not shown).

Theconveyor 100 in this embodiment slides the stent graft to the distal end (not shown) of the outer tube without rotating, so that the stent graft can be ensured to be consistent with the preset posture, and the failure of the operation due to the difference between the posture of the stent graft and the preset posture is avoided. After the membrane-covered stent is slid to the distal end of theouter tube assembly 1 by theisolation assembly 3 in the embodiment, theisolation assembly 3 is stored in theouter tube assembly 1, and theisolation assembly 3 does not need to be detached from theouter tube assembly 1, so that the operation is reduced. Thehandle assembly 20 in this embodiment can simultaneously control theisolation assembly 3 and theouter tube assembly 1 to slide towards the proximal end of thehandle assembly 20 to release the stent graft, thereby reducing the number of steps for releasing the stent graft and improving the efficiency of releasing the stent graft.

Fourteenth embodiment

Referring to fig. 30 and 31, the present embodiment provides alumen device 10. Thelumen device 10 includes anouter tube assembly 1 and astop assembly 6 connected to theouter tube assembly 1. Theouter tube assembly 1 is used to house astent graft 2. Thespacing subassembly 6 winding makes thetectorial membrane support 2 be in the state of compressed at the outer wall oftectorial membrane support 2. Spacingsubassembly 6 keeps apartouter tube subassembly 1 andtectorial membrane support 2, reducestectorial membrane support 2 andouter tube subassembly 1's area of contact. Simultaneously, spacingsubassembly 6 compressiontectorial membrane support 2, the expansion force oftectorial membrane support 2 acts on spacingsubassembly 6, andouter tube assembly 1 is not reduced to the effort betweentectorial membrane support 2 and theouter tube assembly 1. Under the unchangeable condition of friction factor, the effort oftectorial membrane support 2 andouter tube subassembly 1 reduces, can maketectorial membrane support 2 andouter tube subassembly 1's frictional force reduce, andtectorial membrane support 2 is difficult to take place to rotate at the gliding process ofouter tube subassembly 1. The limitingcomponent 6 is a rope, a wire and the like. The spacingmember 6 is not limited to being made of a polymer material. Specifically, in the present embodiment, thecheck assembly 6 is made of PTFE.

In this embodiment, thestop assembly 6 wraps around a portion of the outer wall of thestent graft 2. In another embodiment, thestop assembly 6 completely covers the outer wall of thestent graft 2, and thestop assembly 6 spaces theouter tube assembly 1 from thestent graft 2 so that theouter tube assembly 1 does not directly contact thestent graft 2.

In this embodiment, thestop assembly 6 comprises a plurality of connected windingmembers 6A. The wrappingmember 6A wraps around the outer wall of thestent graft 2 and extends helically around the outer wall of thestent graft 2. Wherein, two adjacent windingpieces 6A are connected with each other.

Further, theposition limiting assembly 6 includes abinding piece 6B, and thebinding piece 6B is connected with the windingpiece 6A and tightens the windingpiece 6A. In this embodiment, the number of thebinding pieces 6B is two, and thebinding pieces 6B are respectively connected with the windingpieces 6A at both ends of thestent graft 2 and tighten the windingpieces 6A at both ends of thestent graft 2.

The binding 6B is detachable. After thebinding piece 6B is disassembled, the windingpiece 6A is loosened correspondingly; thewrapping element 6A may be detached from the outer wall of thestent graft 2 under external pulling force and may be withdrawn from thelumen device 10. The binding 6B includes a fixing portion which,

in another embodiment, referring to fig. 32, the number of thebinding members 6B is the same as the number of the windingmembers 6A. Each windingpiece 6A is tied up with its correspondingbinding piece 6B, and each windingpiece 6A is restrained by thebinding piece 6B, so that each windingpiece 6A is not easy to slide and disengage during the sliding process of theouter pipe assembly 1.

Fifteenth embodiment

Referring to fig. 33 and 34, the present embodiment provides alumen device 10. Thelumen device 10 further includes astop assembly 6. The limitingassembly 6 is detachably connected with theouter pipe assembly 1. When the limitingcomponent 6 is inserted with theouter pipe component 1. The limitingcomponent 6 abuts against the outer wall of the coveredstent 2 to prevent the coveredstent 2 from rotating. In the present embodiment, the limitingassembly 6 penetrates through the inner cavity of theouter tube assembly 1, and the extending direction of the limitingassembly 6 is the same as the extending direction of theouter tube assembly 1. Thespacing assembly 6 has a certain rigidity. Thestop assembly 6 is not limited to being made of metal, non-metal, or the like, subject to the radial expansion of thestent graft 2 not resulting in deformation of thestop assembly 6.

Theposition limiting assembly 6 includes aposition limiting member 61 and a first supportingmember 62 connected to theposition limiting member 61. The limitingmember 61 and the first supportingmember 62 are inserted into theouter tube assembly 1. The limitingpiece 61 abuts against the outer wall of the coveredstent 2 to limit the rotation of the coveredstent 2. The extending direction of thestopper 61 is the same as the extending direction of theouter tube assembly 1. Thefirst support member 62 fixes thestopper 61, preventing thestopper 61 from moving radially outward by an expansion force radially outward of thestent graft 2. It is understood that the retainingmember 61 and the first supportingmember 62 are detachably connected to theouter tube assembly 1.

The number of thestoppers 61 is two or more. When the limitingmembers 61 are plural, the limitingmembers 61 are arranged at intervals. The outer wall of the coveredstent 2 is clamped by the limitingparts 61 together, the limiting effect on the coveredstent 2 is improved, and the coveredstent 2 is prevented from rotating in the outer pipe fitting 1A. When the number of the limitingmembers 61 is two, the two limitingmembers 61 are symmetrically disposed about the axis of theouter tube assembly 1. The limitingmembers 61 evenly and symmetrically limit the outer wall of thestent graft 2.

Referring to fig. 34, thestent graft 2 has a radial expansion force, such that thestent graft 2 is attached to the position-limitingmember 61, and the portion of thestent graft 2 attached to the position-limitingmember 61 is recessed inward in the radial direction of thestent graft 2. The recess increases the contact area of thestop 61 with thestent graft 2.

In the present embodiment, thefirst support 62 has afirst support 62A. The first supportingportion 62A is connected to thestopper 61. Specifically, the limitingmember 61 is inserted into the first supportingportion 62A, and the first supportingportion 62A limits the movement of the limitingmember 61. The extending direction of thefirst support part 62A coincides with the extending direction of theouter pipe member 1A. The number of the first supportingportions 62A is the same as the number of thestoppers 61. Thefirst support portion 62A is not limited to a blind hole or a through hole. The first supportingportion 62A is a through hole, the limitingmember 61 penetrates through the through hole, and the inner wall of the through hole limits the position of the limitingmember 61 to prevent the limitingmember 61 from shifting. In another embodiment, a portion of the first supportingportion 62A is a blind hole, and a portion of the first supportingportion 62A is a through hole. As can be appreciated, thefirst support 62 is disposed on one side of thestent graft 2.

In the present embodiment, the outer diameter of thefirst support 62 is smaller than the inner diameter of theouter tube assembly 1, and thefirst support 62 is slidable within theouter tube assembly 1.

Thestopper 61 includes a connectingportion 61A, astopper portion 61B opposed to the connectingportion 61A, and a protrudingportion 61C connected between the connectingportion 61A and thestopper portion 61B. The connectingportion 61A is connected to thefirst support 62. The limitingpart 61B abuts against the outer wall of thestent graft 2. The extending direction of thestopper portion 61B coincides with the extending direction of theouter tube assembly 1. Theprotruding part 61C protrudes outward in the radial direction, so that the distance between the limitingpart 61B and the axis of theouter tube assembly 1 is greater than the distance between thestent graft 2 and the axis of theouter tube assembly 1, and the limitingpart 61B can abut against the outer wall of thestent graft 2. It is to be understood that theprotrusion 61C is not limited to be bent outward in the radial direction, and may be bent outward.

In the present embodiment, thefirst support member 62, thestop member 61 and thestent graft 2 are inserted from the proximal end of theouter tube assembly 1; the first supportingpiece 62, the limitingpiece 61 and thefilm coating bracket 2 slide in theouter tube component 1 simultaneously; after thestent graft 2 slides to the distal end of theouter tube assembly 1, the first supportingmember 62 and the limitingmember 61 are detached, theouter tube assembly 1 is withdrawn, and then the limitingmember 61 is detached from theouter tube assembly 1. During this process, thestent graft 2 is in contact with theouter tube assembly 1 and there is friction, such that there is a tendency for thestent graft 2 to rotate during sliding within theouter tube assembly 1. Because the limitingpart 61 supports against the outer wall of the coveredstent 2, the coveredstent 2 is limited, and the coveredstent 2 cannot rotate. It will be appreciated that thestop 61 in this embodiment is directly against the outer wall of thestent graft 2. Sixteenth embodiment

Referring to fig. 35, the present embodiment is substantially the same as thelumen device 10 provided in the tenth embodiment, except that the limitingassembly 6 further comprises a second supportingmember 63. Thesecond support 63 is disposed opposite to thefirst support 62. Thestent graft 2 is disposed between thesecond support 63 and thefirst support 62. The limitingmember 61 passes through the second supportingportion 63A of the second supportingmember 63, abuts against the outer wall of thestent graft 2, and then passes through the first supportingportion 62A of the first supportingmember 62. That is, the second supportingmember 63 and the first supportingmember 62 limit the limitingmember 61 together, so that the limiting effect on the limitingmember 61 is enhanced; the limitingpiece 61 is not easy to rotate in the sliding process of theouter tube component 1; and the position of the coveredstent 2 is limited by the limitingcomponent 6, so that the coveredstent 2 can not rotate.

Seventeenth embodiment

Referring to fig. 36, the present embodiment provides aconveyor 100. Thedelivery instrument 100 comprises ahandle device 20 and any one of thelumen device 10 of the fourteenth to sixteenth embodiments. Ahandle device 20 is connected to thelumen device 10.

Further, thelumen device 10 also includes apush rod assembly 7. Thepush rod assembly 7 is integrally formed with thefirst support 62 in thestop assembly 6. On one hand, the hardness of thepush rod assembly 7 is greater than that of the outer pipe, and thepush rod assembly 7 is inserted into the outer pipe (not shown), so that the strength of the outer pipe can be improved, and the outer pipe is not prone to indent in the extrusion of human blood vessels. On the other hand, thepush rod assembly 7 limits the position of the limitingmember 61, so that the limitingmember 61 is not easy to shift in the radial direction under the action of thestent graft 2, and the limitingmember 61 tightly abuts against the outer wall of thestent graft 2, thereby preventing thestent graft 2 from rotating in the process of sliding from the proximal end to the distal end of theouter tube 1A.

Inserting the coveredstent 2, the limitingpiece 61 and thepush rod assembly 7 into an outer pipe; the limitingpiece 61 and thepush rod assembly 7 slide towards the far end of the outer pipe fitting 1A, and thefilm coating bracket 2 slides to the far end of the outer pipe fitting; the proximal end of the outer tubular member and the proximal end of thepusher bar assembly 7 are then mounted within thehandle assembly 20 to complete the assembly of thetransporter 100.

Eighteenth embodiment

Referring to fig. 37, the present embodiment provides astent graft 2. Thestent graft 2 includes amain body 21 and a stabilizingmember 22. Stabilizingmembers 22 are provided on the outer wall of thebody 21. The stabilizingmember 22 can be connected to a limiting assembly (not shown), and the stabilizingmember 22 is prevented from rotating due to the limiting effect of the limitingassembly 6, so that theentire stent graft 2 is also prevented from rotating.

In this embodiment, the stabilizingmember 22 includes a plurality of stabilizingportions 221 spaced apart. A plurality ofstabilizers 221 are provided at an outer wall of thebody 21. The securingportion 221 has a hollow ring-shaped structure. In fig. 37, a plurality ofstabilizers 221 are arranged in parallel on the outer wall of themain body 21. Each group is on the same horizontal line. The fixingportions 221 in the same group are arranged in the X-axis direction. The limiting component penetrates through the plurality of stabilizingparts 221 in the same horizontal direction, and limits the positions of the plurality of stabilizingparts 221 in the same horizontal direction. As can be appreciated, thestent graft 2 slides within the outer tube assembly, there is friction between thestent graft 2 and the outer tube assembly, and thestent graft 2 has a tendency to rotate in the direction of extension of the spring structure within the outer tube assembly. Because the plurality of stabilizingparts 221 are limited by the limiting assembly, the rotation of themain body 21 and the wholecovered stent 2 is limited by the limiting assembly, and themain body 21 and the wholecovered stent 2 are prevented from rotating.

In the present embodiment, the fixingportion 221 has a circular ring shape. The plurality of securingportions 221 form two opposing sets. The number of the position restricting members is the same as the number of rows formed by the plurality of the stabilizingportions 221. That is, each of the stopper members is restricted to the securingportion 221 on the same horizontal line. It is understood that in other embodiments, the plurality of stabilizingportions 221 form a plurality of groups, and the number of position limiting components is the same as the number of groups of the plurality of groups. Through the quantity ofincrease firm portion 221 group number and spacing subassembly, improve spacing subassembly tofirm portion 221 andtectorial membrane support 2's spacing effect for wholetectorial membrane support 2 is difficult to rotate. In another embodiment, where the plurality of stabilizingsegments 221 are formed in four groupings, the four groupings are spaced apart and symmetrically stepped about the center of thestent graft 2.

It will be appreciated that the stabilizingmember 22 and its stabilizingportion 221 are fixedly connected to the outer wall of themain body 21. The fixing method of the fixingmember 22 and the outer wall of themain body 21 is not limited to a method of heat fusion, adhesion, or the like. The stabilizingmember 22 is not limited to being made of a metallic or non-metallic material. In this embodiment, the stabilizingmember 22 is made of nitinol wire.

In this embodiment, during installation of thestent graft 2 into the outer tube assembly of the delivery device, either thestent graft 2 is installed into the distal end of the outer tube assembly; still, pack into the near-end of outer tube assembly withtectorial membrane support 2, then slidetectorial membrane support 2 to the distal end of outer tube assembly from the near-end of outer tube assembly again,firm 22 oftectorial membrane support 2 all receives spacing effect of spacing subassembly and can't rotate, has guaranteed thattectorial membrane support 2 keeps unanimous with predetermined gesture at the distal end of outer tube assembly's gesture.

Nineteenth embodiment

Referring to fig. 38, the present embodiment is substantially the same as thestent graft 2 provided in the previous embodiment, except that the stabilizingmember 22 covers part of themain body 21. And the steady 22 extends in the same direction as thebody 21. There is a gap between the steady 22 and thebody 21. A limiting member (not shown) in the limiting assembly can pass through a gap between the fixingmember 22 and themain body 21 to abut against the fixingmember 22 and themain body 21, so as to prevent themain body 21 from rotating. It will be appreciated that the stop member is removably connected to the stabilizingmember 22.

In this embodiment the stabilizingmember 22 is in the form of a strip extending from the distal end 211 of thebody 21 to the proximal end 212 of thebody 21. The stabilizingmember 22 is not limited to being made of a polymer material. In particular, the stabilizingmember 22 is supported by a PTFE material. In other implementations, stabilizingmember 22 may also be disposed between the distal end ofbody 21 and the proximal end ofbody 21. Alternatively, rather than extending from the distal end of thebody 21 to the proximal end of thebody 21, the stabilizingmembers 22 may be provided at the proximal end of thebody 21 and the distal end of thebody 21, respectively. The limiting member passes through the stabilizingmember 22 in the same axial direction to prevent thestent graft 2 from rotating.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

Claims (10)

1. An outer tube assembly is used for accommodating an implant and comprises a first part and a second part connected with the first part, the implant slides through the first part and rotates for a first angle, the implant slides through the second part and rotates for a second angle, after the implant slides through the first part and the second part, the posture of a covered stent is kept consistent with a preset posture, wherein the direction of the first angle is opposite to the direction of the second angle.

2. The outer tube assembly of claim 1, wherein the first and second sections are each formed by a helical extension of the resilient member, the helical direction of the resilient member in the first section being opposite to the helical direction of the resilient member in the second section.

3. The outer tube assembly of claim 1, wherein the first portion includes a first plurality of spaced apart subcomponents and the second portion includes a plurality of spaced apart second subcomponents, the plurality of first subcomponents alternating with the plurality of second subcomponents.

4. The outer tube assembly of claim 1, further comprising a third portion connected to the second portion, the third portion being distal from the first portion relative to the second portion and closer to the proximal end of the outer tube assembly than the second portion, the third portion being interwoven with a plurality of wires for increasing the efficiency of the outer tube assembly in transferring torque.

5. The outer tube assembly of claim 1, further comprising a third portion connected to the first portion, the third portion being distal from the second portion relative to the first portion and closer to the distal end of the outer tube assembly than the first portion, the third portion being interwoven from the plurality of filaments, a length of the third portion in the axial direction being greater than a maximum compressed length of the implant in the axial direction.

6. The outer tube assembly of claim 1, further comprising a transition connected between the first portion and the second portion, the transition for increasing a strength of the connection between the first portion and the second portion.

7. The outer tube assembly of claim 1, further comprising an outer layer covering the outer walls of the first and second portions and an inner layer opposite the outer layer covering the inner walls of the first and second portions.

8. The outer tube assembly of claim 7, wherein a portion of the outer layer and a portion of the inner layer fill voids in the first portion and voids in the second portion.

9. A lumen device comprising a fixation member and the outer tube assembly of any one of claims 1-8, wherein the fixation member is attached to a proximal end of the outer tube assembly.

10. A delivery device, comprising a handle assembly and the lumen device of claim 9, wherein the handle assembly is coupled to the lumen device.

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