CN112024774A - Anti-folding filament winding equipment of anti-folding sheath tube and production method of anti-folding sheath tube - Google Patents

Abstract

The invention discloses anti-folding wire winding equipment of an anti-folding sheath tube and a production method of the anti-folding sheath tube, wherein the equipment comprises an equipment main body, a winding device and a winding device, wherein the equipment main body is provided with two box bodies, two clamping pieces are correspondingly arranged on two corresponding side surfaces of the two box bodies respectively, and the two clamping pieces are used for clamping a core rod provided with an inner-layer sheath tube; the control slide block is provided with an installation end and a control end, and the control end is provided with an avoidance channel for the core rod provided with the inner sheath tube to pass through; the control slide block is slidably arranged on the first track; the anti-broken wire mounting seat is used for mounting the anti-broken wire wound in a roll shape; the anti-broken wire mounting seat is slidably mounted on the second rail; when two holder centre gripping inlayer sheath pipes rotated, control slider and anti silk mount pad can slide in coordination along first track and second track respectively to twine anti silk in inlayer sheath pipe in order. It can twine anti silk in the inner sheath of sheath pipe fast, can improve the production efficiency and the machining precision of sheath pipe.

Description

Anti-folding filament winding equipment of anti-folding sheath tube and production method of anti-folding sheath tube

Technical Field

The invention relates to the field of medical treatment, and further relates to anti-bending filament winding equipment of an anti-bending sheath and a production method of the anti-bending sheath.

Background

The endovascular intervention technology is to apply selective or super-selective angiography, to determine the location, property, range and degree of lesion, and to perform embolization, endovascular angioplasty, drug perfusion and other treatments via a catheter inserted into the blood vessel according to the indication. With intravascular interventional techniques, a wide variety of materials, instruments and drugs can be placed into the heart and arteriovenous vessels of the human body. For example, transseptal needles, valve repair devices, heart occluders, vascular plugs, vascular filters, and the like may be placed at selected locations by interventional techniques.

In the case of a transvascular intervention, it is necessary to first deliver a sheath to a lesion site through a tortuous path of the human body and then deliver an implantation instrument or a drug to the lesion site through the sheath. In the process that the sheath tube enters a human body and is used for conveying an instrument or a medicament after a channel is established, the sheath tube is easily bent and deformed under the action of tissues such as blood vessels of the human body or an implantation instrument. How to improve the anti-bending performance of the sheath tube, the sheath tube keeps a preset slender tubular structure, and the unrecoverable deformation is not generated, so that the performance of the sheath tube is improved.

In order to improve the anti-folding performance of the sheath, a common method is to arrange an anti-folding layer inside the sheath, for example, a metal wire is placed inside the sheath, and the key is to uniformly arrange the metal wire inside the sheath, so that the product performance and the production efficiency are ensured to be the problems to be solved.

In the prior art, a single long and thin spring is sleeved on a long and thin inner sheath. The spring is formed by winding filaments into a tightly arranged shape, the cross section of each filament is rectangular, the surface of a finished spring product is smooth and very soft, and the spring product is easy to deform without recovery when being subjected to external force. When processing anti-roll sheath pipe, the technical staff need manually establish the surface at long and thin hollow inlayer sheath pipe with above-mentioned spring cover, inlayer sheath pipe length often reaches 1000mm, the cover establishes an inlayer sheath pipe required time and can reach several hours, the cover establishes the in-process and also often can't keep the adjacent filament interval of spring even, the inhomogeneous sheath pipe finished product anti-roll performance of spring interval is poor, in addition the cover establishes the in-process, if the mistake makes the spring produce can not resume deformation, then need to change the spring and establish again the cover.

Therefore, the anti-bending sheath tube produced by the method takes long time, has low yield, causes raw material waste and has low production efficiency.

In view of the above, there is a need for an improvement in the production method of the conventional bending-resistant sheath.

Disclosure of Invention

In view of the above problems, an object of the present invention is to provide an anti-bending filament winding apparatus for an anti-bending sheath and a method for manufacturing an anti-bending sheath, which can rapidly wind an anti-bending filament around an inner sheath of a sheath, and can improve the production efficiency and the processing accuracy of the sheath.

In order to achieve the above object, an object of the present invention is to provide an anti-bending filament winding apparatus of an anti-bending sheath, comprising:

the equipment comprises an equipment main body and a clamping device, wherein the equipment main body is provided with two box bodies, a working space is arranged between the two box bodies, two corresponding side surfaces of the two box bodies are respectively and correspondingly provided with two clamping pieces, and the two clamping pieces are used for clamping a core rod provided with an inner sheath pipe;

the control slide block is provided with an installation end and a control end, and the control end is provided with an avoidance channel for the core rod provided with the inner sheath tube to pass through;

a first rail to which the control slider is slidably mounted;

the anti-broken wire mounting seat is used for mounting the anti-broken wire wound in a roll shape;

a second rail to which the anti-jackwire mount is slidably mounted;

two when the holder centre gripping inlayer sheath pipe rotated, the control slider with anti silk mount pad can be along respectively first track with the second track slides in coordination, with anti silk of rolling over twine in order in inlayer sheath pipe.

In some preferred embodiments of the present invention, the control end of the control slider has a lateral protrusion, the lateral protrusion has a guide channel thereon, and the anti-kink wire is wound around the inner sheath after passing through the guide channel.

In some preferred embodiments of the present invention, the bypass channel is a groove formed at the top end of the control slider; or the avoiding channel is a groove formed at the bottom end of the control slide block; or the avoiding channel is a groove formed on the side surface of the control end of the control slide block; or the avoiding channel is a channel penetrating through the control end of the control slide block.

In some preferred embodiments of the present invention, the guide channel is a groove formed at an apex of the lateral projection; or the guide channel is a groove formed at the bottom end of the lateral projection; or the guide channel is a groove formed in a side surface of the lateral protrusion; or the guide channel is a channel through the lateral projection.

In some preferred embodiments of the present invention, the bending-resistant wire winding apparatus of the bending-resistant sheath further comprises a laser emitter, a laser emitter mounting bracket, and a third rail, the laser emitter being mounted to the laser emitter mounting bracket, the laser emitter mounting bracket being slidably mounted to the third rail; when the inner sheath pipe rotates, the laser emitting piece mounting rack can slide along the third rail in a coordinated manner.

In some preferred embodiments of the present invention, the laser emitting element mounting bracket includes a base frame slidably mounted on the third rail, and an adjusting frame having one end mounted on the base frame and the other end extending toward and above the control slider for adjusting the distance between the laser emitting element and the inner sheath.

In some preferred embodiments of the present invention, the anti-bending filament winding apparatus of the anti-bending sheath further includes an avoiding member mounted to the control end of the control slider, the avoiding channel is formed in the avoiding member, and the avoiding member is detachably mounted to the control end.

In some preferred embodiments of the present invention, the bending-resistant wire winding apparatus of the bending-resistant sheath further comprises a welding ring adapted to be installed outside the inner sheath, and an end of the bending-resistant wire is adapted to be interposed between the inner sheath and the welding ring.

According to another aspect of the present invention, the present invention further provides a method for producing a kink-resistant sheath, comprising:

sleeving an inner-layer sheath tube of the anti-bending sheath tube on a core rod of anti-bending filament winding equipment of the anti-bending sheath tube, clamping the core rod with the inner-layer sheath tube between two clamping pieces of the anti-bending filament winding equipment of the anti-bending sheath tube, and enabling the core rod with the inner-layer sheath tube to penetrate through an avoiding channel of a control slide block;

the head end of the anti-folding wire penetrates through a guide channel of the control slide block, and is fixed at a preset position of the inner sheath;

controlling the core rod with the inner sheath tube to rotate and controlling the control slide block to move cooperatively;

when the anti-folding wire is wound to the tail end of the inner sheath, fixing the tail end of the anti-folding wire at a preset position of the tail end of the inner sheath;

and taking down the core rod with the inner-layer sheath tube, sleeving an outer-layer sheath tube and a heat-shrinkable tube on the outer side of the core rod with the inner-layer sheath tube, and carrying out heat treatment.

In some preferred embodiments of the present invention, controlling the rotation of the mandrel with the inner sheath and controlling the cooperative movement of the control slide further includes:

and controlling the coiled and wound anti-bending wires to cooperatively move along with the rotation of the core rod with the inner layer sheath tube.

In some preferred embodiments of the present invention, the winding apparatus further comprises a laser emitter mounted to the laser emitter mounting bracket, and a laser emitter mounting bracket for welding the anti-kink wire to the inner sheath.

In some preferred embodiments of the present invention, controlling the rotation of the mandrel with the inner sheath and controlling the cooperative movement of the control slide further includes:

and controlling the laser emitting piece mounting frame to carry the laser emitting piece to cooperatively move along with the rotation of the core rod with the inner-layer sheath tube.

In some preferred embodiments of the present invention, in the step, the passing the head end of the anti-folding wire through the guide channel of the control slider, and fixing the head end of the anti-folding wire at a preset position of the inner sheath, further includes:

sleeving the welding ring outside the inner sheath;

placing the head end of the anti-folding wire between the inner sheath and the welding ring;

and welding the overlapped part of the anti-folding wire and the welding ring.

The anti-bending filament winding equipment of the anti-bending sheath and the production method of the anti-bending sheath provided by the invention have at least one of the following beneficial effects:

(1) according to the anti-folding wire winding equipment for the anti-folding sheath tube and the production method of the anti-folding sheath tube, the anti-folding wire can be quickly wound on the inner sheath tube of the anti-folding sheath tube through the anti-folding wire winding equipment for the anti-folding sheath tube, so that the winding efficiency of the anti-folding wire can be improved, and the damage rate of the anti-folding wire in the winding process can be reduced.

(2) According to the anti-folding wire winding equipment of the anti-folding sheath tube and the production method of the anti-folding sheath tube, the control end of the control slide block of the anti-folding wire winding equipment of the anti-folding sheath tube is provided with the avoiding channel, so that a core rod with an inner layer sheath tube can be allowed to pass through, and the stability of the core rod with the inner layer sheath tube is improved in the winding process of the anti-folding wire.

(3) According to the production method of the anti-folding sheath tube of the anti-folding wire winding equipment of the anti-folding sheath tube, one side of the control end of the control slide block of the anti-folding wire winding equipment of the anti-folding sheath tube is provided with the lateral bulge, the lateral bulge is provided with the guide channel for the anti-folding wire to pass through, the anti-folding wire passes through the guide channel and then is wound on the inner layer sheath tube, and a preset angle is formed between the guide channel and the avoiding channel, so that the anti-folding wire can be wound on the core rod with the inner layer sheath tube at the preset angle.

Drawings

The above features, technical features, advantages and modes of realisation of the present invention will be further described in the following detailed description of preferred embodiments thereof, which is to be read in connection with the accompanying drawings.

Fig. 1 is a perspective view of an anti-bending filament winding apparatus of an anti-bending sheath according to a preferred embodiment of the present invention;

fig. 2 is a side view of the anti-bending filament winding apparatus of the anti-bending sheath according to the preferred embodiment of the present invention;

fig. 3 is a plan view of the anti-bending filament winding apparatus of the anti-bending sheath according to the preferred embodiment of the present invention;

fig. 4 is a perspective view of a control slider of the anti-bending filament winding apparatus of the anti-bending sheath according to the preferred embodiment of the present invention;

fig. 5 is another perspective view of the control slider of the anti-bending filament winding apparatus of the anti-bending sheath according to the preferred embodiment of the present invention;

fig. 6 is a side view of a control slider of the anti-bending filament winding apparatus of the anti-bending sheath according to the preferred embodiment of the present invention;

fig. 7 is a schematic sectional structure view of the anti-kink sheath according to the preferred embodiment of the present invention;

fig. 8 is a partial structural perspective view of the kink-resistant sheath of the preferred embodiment of the present invention;

fig. 9 is a flowchart of a production method of the bending-resistant sheath according to the preferred embodiment of the present invention.

The reference numbers illustrate:

the device comprises a device main body 1, acontrol sliding block 2, afirst rail 3, an anti-brokenwire mounting seat 4, asecond rail 5, abox body 11, aworking space 10, aclamping piece 12, amounting end 21, acontrol end 22, alateral convex block 23, acore rod 61, alaser emitting piece 71, a laser emittingpiece mounting frame 72, achannel 220 avoiding, aguide channel 230, abase frame 721, an adjustingframe 722, an inner-layer sheath tube 62, an outer-layer sheath tube 63, ananti-broken wire 64 and awelding ring 65.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.

For the sake of simplicity, only the parts relevant to the invention are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

In this context, it is to be understood that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.

Example 1

Referring to fig. 1 to 8 of the specification, the present invention provides an anti-folding wire winding apparatus for an anti-folding sheath, which can wind ananti-folding wire 64 on aninner sheath 62 of the anti-folding sheath in order, so as to improve the winding efficiency of theanti-folding wire 64 and prevent theanti-folding wire 64 from being damaged during the winding process.

Specifically, the anti-bending filament winding device of the anti-bending sheath comprises: the device comprises a device main body 1, a control slide block 2, a first rail 3, an anti-broken wire mounting seat 4 and a second rail 5, wherein the device main body 1 is provided with two box bodies 11, a working space 10 is arranged between the two box bodies 11, two clamping pieces 12 are correspondingly mounted on two corresponding side surfaces of the two box bodies 11 respectively, and the two clamping pieces 12 are used for clamping a core rod 61 provided with an inner-layer sheath tube 62; the control slide block 2 is provided with a mounting end 21 and a control end 22, the control end 22 is provided with an escape channel 220 for the core rod 61 and the inner sheath 62 to pass through; the control slide block 2 is slidably mounted on the first track 3; the anti-folding wire mounting seat 4 is slidably mounted on the second rail 5 for mounting an anti-folding wire 64; when the two clamping pieces 12 clamp the core rod 61 and carry the inner sheath 62 to rotate, the control slide block 2 and the anti-folding wire mounting seat 4 can cooperatively slide along the first rail 3 and the second rail 5 respectively, so as to orderly wind the anti-folding wire 64 on the inner sheath 62.

It should be noted that, the anti-folding wire winding device of the anti-folding sheath provided by the present invention can wind theanti-folding wire 64 on theinner sheath 62 of the anti-folding sheath in order, so that theanti-folding wire 64 is not required to be wound on theinner sheath 62 in a manual manner, which can improve the winding efficiency of theanti-folding wire 64, on the other hand, can effectively reduce the damage rate of theanti-folding wire 64 during the winding process, and reduce the production cost.

Preferably, in the present preferred embodiment, thefirst track 3 is implemented as a first screw, thecontrol slide 2 has a corresponding first threaded groove or first threaded hole, and thefirst track 3 implemented as a first screw is mounted in the first threaded groove or the second threaded hole of thecontrol slide 2. When thefirst rail 3 implemented as a first screw rotates, thefirst rail 3 pushes thecontrol slider 2 to slide along a direction in which the length of thefirst rail 3 extends.

Preferably, in the present preferred embodiment, thesecond rail 5 is implemented as a second screw, the anti-bendingthread mounting seat 4 has a corresponding second threaded groove or second threaded hole, and thesecond rail 5 implemented as a second screw is mounted in the second threaded groove or the second threaded hole of the anti-bendingthread mounting seat 4. When thesecond rail 5 implemented as a second screw is rotated, thesecond rail 5 pushes theanti-bending wire mount 4 to slide in a direction in which the length of thesecond rail 5 extends.

It should be further noted that, in the process that the two clampingmembers 12 drive thecore rod 61 with theinner sheath 62 mounted thereon to rotate, thefirst rail 3 cooperatively rotates and pushes thecontrol slider 2 to cooperatively move with the rotation of theinner sheath 62 along the length direction of thefirst rail 3, so as to push the portion to be wound of theanti-folding wire 64 to slide along theinner sheath 62, so that theanti-folding wire 64 is sequentially and sequentially wound on theinner sheath 62. In the process that the two clampingpieces 12 drive thecore rod 61 provided with the inner-layer sheath tube 62 to rotate, thesecond rail 5 rotates cooperatively, and pushes the anti-brokenwire mounting seat 4 to move cooperatively with the rotation of the inner-layer sheath tube 62 along the length direction of thesecond rail 5, so that the anti-brokenwire mounting seat 4 can move cooperatively with thecontrol slider 2.

Further, the anti-folding wire winding device of the anti-folding sheath tube comprises a driving motor installed in thebox body 11, and the driving motor is used for driving the two clampingpieces 12, thefirst rail 3 and thesecond rail 5 to cooperatively rotate. It is to be understood that the number of the driving motors can be embodied as one or more, and the specific number of the driving motors should not constitute a limitation of the present invention.

In the process of using the anti-bending filament winding apparatus for the anti-bending sheath provided by the present invention, theinner sheath 62 is required to be mounted on thecore rod 61, and then thecore rod 61 mounted with theinner sheath 62 is clamped between the two clampingmembers 12. Theanti-folding wire 64 wound in a roll shape is mounted on the anti-foldingwire mounting seat 4, and the head end of theanti-folding wire 64 is fixed at the corresponding position of theinner sheath tube 62. Then the two clampingpieces 12, thefirst rail 3 and thesecond rail 5 are controlled to rotate cooperatively by the driving motor.

Preferably, theescape passage 220 is a groove formed at the top end of the control end 22 of thecontrol slider 2. Optionally, theescape passage 220 is a groove formed at the bottom end of the control end 22 of thecontrol slider 2. Optionally, theescape passage 220 is a groove formed in the side of the control end 22 of thecontrol slide 2. Optionally, theescape passage 220 is a passage through the control end 22 of thecontrol slide 2.

In a modified embodiment of the anti-bending filament winding apparatus for the anti-bending sheath according to the present invention, the anti-bending filament winding apparatus for the anti-bending sheath further includes an avoiding member mounted on the control end 22 of thecontrol slider 2, and the avoidingchannel 220 is formed in the avoiding member. In this variant embodiment, the bypass member is detachably mounted to the control end 22 of thecontrol slider 2, such as by a threaded connection, a snap-fit connection, or an interference fit connection. The avoiding member has various different specifications, and the avoiding member with different specifications has the avoidingchannel 220 with different dimensions so as to be suitable for theinner sheath tube 62 with different dimensions. It will be appreciated that the kink-resistant sheaths have a size range of 3F-28F, and that kink-resistant sheaths of different sizes require correspondingly sizedinner sheath 62 and, therefore, a differentsized escape channel 220. In the present modified embodiment, the avoidance member having a different size of theavoidance channel 220 can be replaced for theinner sheath 62 having a different size, so that the inner sheath can be better fixed during the winding process.

Preferably, the inner wall of theavoidance channel 220 is made of PTFE (polytetrafluoroethylene), that is, the inner wall of theavoidance channel 220 has a PTFE (polytetrafluoroethylene) coating to increase the lubricating performance of theavoidance channel 220. Optionally, the bypass is made of a PTFE (polytetrafluoroethylene) material. It is to be understood that the particular type of material from which the inner walls of theescape passage 220 are made should not be construed as limiting the invention.

It should be noted that, during the winding process of theanti-folding wire 64, theinner sheath 62 is located in the avoidingchannel 220, and the peripheral wall of the avoidingchannel 220 slides along the length extending direction of theinner sheath 62, so that the stability of theinner sheath 62 can be improved and the winding uniformity of theanti-folding wire 64 can be improved during the winding process of theanti-folding wire 64.

Further, the control end 22 of thecontrol slider 2 further has alateral protrusion 23, thelateral protrusion 23 has aguide channel 230 for installing theanti-folding wire 64, and theanti-folding wire 64 is wound around theinner sheath 62 after passing through theguide channel 230.

Preferably, theguide channel 230 is a groove formed at the tip of thelateral projection 23. Optionally, theguide channel 230 is a groove formed at the bottom end of thelateral projection 23. Optionally, theguide channel 230 is a groove formed on the side of thelateral protrusion 23. Optionally, theguide channel 230 is a channel through thelateral projection 23.

Further, a preset angle is formed between the central axis of the guidingchannel 230 and the central axis of the avoidingchannel 220, so that theanti-folding wire 64 can be guided to wind around theinner sheath 62 at the preset angle. Preferably, the predetermined angle between the central axis of theguide channel 230 and the central axis of theescape channel 220 is 90 degrees. In other words, the central axis of theguide channel 230 is perpendicular to the central axis of theescape channel 220. It is understood that the predetermined angle between the central axis of theguide channel 230 and the central axis of theescape channel 220 can also be implemented as other angular values, and the size of the predetermined angle should not be construed as limiting the present invention.

Further, the anti-bending wire winding device of the anti-bending sheath tube further comprises alaser emitting piece 71, a laser emittingpiece mounting frame 72 and a third rail, wherein thelaser emitting piece 71 is mounted on the laser emittingpiece mounting frame 72, and the laser emittingpiece mounting frame 72 is slidably mounted on the third rail. Thelaser emitting component 71 is used for welding theanti-bending wires 64 contacting with the head end and the tail end of theinner sheath 62 to theinner sheath 62.

Preferably, when the two clampingmembers 12 drive theinner sheath 62 to rotate, the laser emittingmember mounting bracket 72 can cooperatively slide along the length direction of the third rail.

Referring to fig. 1, 2 and 3 of the specification, further, the laser emittingdevice mounting bracket 72 includes abase frame 721 and an adjustingframe 722, thebase frame 721 is slidably mounted on the third rail, the adjustingframe 722 is mounted on thebase frame 721, and the adjustingframe 722 can slide up and down along the height direction of thebase frame 721 to adjust the distance between thelaser emitting device 71 and theinner sheath 62.

Referring to the attached fig. 3 of the specification, the laser emittingpart mounting frame 72 and the anti-bendingwire mounting seat 4 are respectively located on two sides of thecontrol slide block 2. The adjustingbracket 722 of the laser emittingmember mounting bracket 72 extends from thebase frame 721 toward thecontrol slider 2 and extends above thecontrol slider 2, so that thelaser emitting member 71 mounted on the adjustingbracket 722 can be located above thecontrol slider 2.

Further, the anti-bending filament winding device of the anti-bending sheath provided by the invention further comprises a laser emission control assembly, wherein the laser emission control assembly comprises a laser power supply, an optical system, a numerical control system, a CCD monitoring system and a red light positioning system, and is independent of the device main body 1.

The welding point is positioned by using the red positioning system after theanti-folding wire 64 is wound on thecore rod 61 at the beginning and theanti-folding wire 64 is wound. The laser light source is preferably a pulsed laser having a relationship between pulse energy, pulse width and power density as shown in the following formula.

Wherein rho is power density, E is pulse energy, d is laser spot diameter, t is pulse width, E is preferably 2-6J (joule) and t is preferably 3-8 microseconds (10 microseconds) aiming at the winding of theanti-bending wire 64 of the anti-bending sheath^-3Seconds). So set up, both can guarantee welded quality, also can not damage spring ring andinlayer sheath pipe 62 because of the heat that produces in the welding process, can not reduce the yield because of the welding.

Optionally, in other preferred embodiments of the present invention, thecontrol slider 2, the laser emittingdevice mounting bracket 72, and the anti-bendingwire mounting seat 4 can also be integrally connected and molded or mounted on the same base, so that thecontrol slider 2, the laser emittingdevice mounting bracket 72, and the anti-bendingwire mounting seat 4 can move cooperatively.

Referring to the attached fig. 6, the size of the upper opening of theescape channel 220 of the control end 22 of thecontrol slider 2 is larger than the size of the gear of the lower opening of theescape channel 220, so as to facilitate the insertion of thecore rod 61 with theinner sheath 62.

It should be noted that, after theanti-folding wire 64 is wound around thecore rod 61, theinner sheath tube 62 wound with theanti-folding wire 64 is removed, and anouter sheath tube 63 and a heat-shrinkable tube are sleeved outside theanti-folding wire 64, and heat treatment is performed.

Preferably, theanti-fold wires 64 are implemented as spring wires. It will be appreciated that the pitch of theanti-kink filaments 64 can be preset before the winding starts, and in some embodiments the cross-section of theanti-kink filaments 64, which are implemented as spring filaments, is rectangular, which facilitates a reduction of the radial dimension of the sheath, preferably the cross-sectional dimension is 0.5mm thick and 1mm wide, and the pitch of the spring filaments can be 0.5-5 times the width of the spring filaments, with the stiffness of the anti-kink sheath decreasing as the pitch increases. Preferably, the material of theanti-folding wire 64 implemented as a spring wire is medical stainless steel.

It should be noted that, in some preferred embodiments, a tension control module is installed on the anti-foldingwire installation seat 4, and is used for controlling the tension in the winding process of the anti-folding member more precisely, and adjusting the tension between theanti-folding wire 64 and thecore rod 61 to make it in a balanced state, so as to avoid the loosening of theanti-folding wire 64 caused by too small tension, and simultaneously avoid the over tightening of theanti-folding wire 64 caused by too large tension, so that the winding process is more controllable.

Preferably, theinner sheath 62 and theouter sheath 63 are each made of a polymer material, including but not limited to PEBAX (polyether block polyamide).

Referring to fig. 8 of the specification, the anti-bending wire winding device of the anti-bending sheath provided by the invention further comprises awelding ring 65. Before theanti-kink wire 64 is wound around theinner sheath 62, thewelding ring 65 is sleeved outside the head end of theinner sheath 62, so as to weld the head end of theanti-kink wire 64 to the head end of theinner sheath 62. Thewelding ring 65 has a thin-plate structure in partial section, and has a radial dimension equivalent to the outer dimension of theinner sheath 62. Before theanti-folding wire 64 is wound around theinner sheath 62, one end of theanti-folding wire 64 is placed between the outer surface of theinner sheath 62 and thewelding ring 65, so that one end of theanti-folding wire 64 is partially overlapped with thewelding ring 65, and a laser welding point is positioned at the overlapped part of theanti-folding wire 64 and thewelding ring 62 to weld the two.

Preferably, the material of thesolder ring 65 is, but not limited to, palladium-gold, tungsten-gold or palladium-iridium alloy.

It is worth mentioning that, through setting up weldingring 65 can be more conveniently with the tip ofanti silk 64 is fixed in the tip ofinlayer sheath 62 can improve the welded degree of accuracy, can also further control the produced heat of welding in-process and toanti silk 64 with the influence ofinlayer sheath 62 improves the yield.

It is further noted that theweld ring 65 remains at the head end of theinner sheath 62 when theouter sheath 63 is installed. In the using process, thewelding ring 65 can be used as a developing ring of a finished sheath, so that the functions of marking the position of the head end of the sheath and measuring the position reached by an implanting instrument in the operation process are achieved, and the process of placing the developing ring is reduced.

Further, the anti-folding wire winding device of the anti-folding sheath tube further comprises a tension meter, wherein the tension meter is mounted on the device main body and used for controlling the tension of theanti-folding wire 64 in the winding process of theanti-folding wire 64. The preferable tension range is 5-15N (Newton), the tension value is selected to be in positive correlation with the size of the sheath tube, the winding tension in the range can better control theanti-folding wire 64 in the welding link, the welding fracture condition is avoided, theanti-folding wire 64 interruption condition is avoided in the winding process, and the production efficiency and the yield are improved.

Example 2

Referring to fig. 9 of the specification, according to another aspect of the present invention, there is further provided a method for producing a kink-resistant sheath, comprising:

101: sleeving an inner-layer sheath tube 62 of the anti-bending sheath tube on acore rod 61 of anti-bending filament winding equipment of the anti-bending sheath tube, clamping thecore rod 61 with the inner-layer sheath tube 62 between two clampingpieces 12 of the anti-bending filament winding equipment of the anti-bending sheath tube, and enabling thecore rod 61 with the inner-layer sheath tube 62 to penetrate through anavoidance channel 220 of acontrol slide block 2;

102: the head end of theanti-folding wire 64 penetrates through the guide channel of thecontrol slide block 2, and the head end of theanti-folding wire 64 is fixed at the preset position of theinner sheath tube 62;

103: controlling thecore rod 61 with theinner sheath tube 62 to rotate and controlling thecontrol slide block 2 to move cooperatively;

104: when theanti-folding wire 64 is wound to the tail end of theinner sheath tube 62, fixing the tail end of theanti-folding wire 64 at a preset position of the tail end of theinner sheath tube 62;

105: taking down thecore rod 61 with the innerlayer sheath tube 62, sleeving an outerlayer sheath tube 63 and a heat-shrinkable tube outside thecore rod 61 with the innerlayer sheath tube 62, and performing heat treatment.

Further, in thestep 103, controlling the rotation of the mandrel with theinner sheath 62 and controlling the cooperative movement of the control slide further includes:

106: theantiflex wire 64, which controls the winding of the coil, is moved in unison while the core rod with theinner sheath 62 is rotated.

Further, the winding device further comprises alaser emitting piece 71 and a laser emittingpiece mounting frame 72, wherein thelaser emitting piece 71 is mounted on the laser emittingpiece mounting frame 72, and thelaser emitting piece 71 is used for welding theanti-folding wire 64 to theinner sheath 62.

Further, in thestep 103, controlling the rotation of the mandrel with theinner sheath 62 and controlling the cooperative movement of the control slide further includes:

controlling the laser emittingmember mounting frame 72 to carry thelaser emitting member 71 to move cooperatively with the rotation of theinner sheath 62 with theinner sheath 62.

It should be noted that, in thestep 102, the method further includes:

1021: sleeving thewelding ring 65 outside theinner sheath tube 62;

1022: placing the head end of theanti-kink wire 64 between theinner sheath 62 and theweld ring 65;

1023: the portions of theanti-crease lines 64 that overlap the weld rings 65 are welded.

In thestep 105, the heat-shrinkable tube is an FEP tube with a heat shrinkage temperature of about 190-.

It should also be noted that the winding pitch of theanti-bending wire 64 is set according to the requirement of the sheath tube finished product, the common anti-bending sheath tube is set to be a fixed pitch, theanti-bending wire 64 formed by winding is uniform in interval, and the overall hardness of the sheath tube is correspondingly uniform. In some cases, different positions of the finished sheath tube are required to have different hardness, and for sheath tubes with different parts requiring different hardness, theanti-folding wires 64 can be controlled to have variable pitches by controlling the rotation speeds of thecore rod 61 and the innerlayer sheath tube 62, the pitches can be changed in the winding process, accordingly, the different positions of thewound anti-folding wires 64 have different pitches, and the hardness of the sheath tube is correspondingly changed, so that the requirements of different diseases are met.

It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims (13)

1. An anti-broken filament winding apparatus of an anti-broken sheath, comprising:

the equipment comprises an equipment main body and a clamping device, wherein the equipment main body is provided with two box bodies, a working space is arranged between the two box bodies, two corresponding side surfaces of the two box bodies are respectively and correspondingly provided with two clamping pieces, and the two clamping pieces are used for clamping a core rod provided with an inner sheath pipe;

the control slide block is provided with an installation end and a control end, and the control end is provided with an avoidance channel for the core rod provided with the inner sheath tube to pass through;

a first rail to which the control slider is slidably mounted;

the anti-broken wire mounting seat is used for mounting the anti-broken wire wound in a roll shape;

a second rail to which the anti-jackwire mount is slidably mounted;

two when the holder centre gripping inlayer sheath pipe rotated, the control slider with anti silk mount pad can be along respectively first track with the second track slides in coordination, with anti silk of rolling over twine in order in inlayer sheath pipe.

2. The apparatus of claim 1, wherein the control end of the control slider has a lateral protrusion, the lateral protrusion has a guide channel thereon, and the anti-folding wire passes through the guide channel and then is wound around the sheath.

3. The bending-resistant wire winding apparatus for a bending-resistant sheath according to claim 1, wherein the escape passage is a groove formed at a tip of the control end of the control slider; or the avoiding channel is a groove formed at the bottom end of the control slide block; or the avoiding channel is a groove formed on the side surface of the control end of the control slide block; or the avoiding channel is a channel penetrating through the control end of the control slide block.

4. The bending-resistant wire winding apparatus of a bending-resistant sheath according to claim 2, wherein the guide channel is a groove formed at a tip of the lateral projection; or the guide channel is a groove formed at the bottom end of the lateral projection; or the guide channel is a groove formed in a side surface of the lateral protrusion; or the guide channel is a channel through the lateral projection.

5. The anti-filament winding apparatus for an anti-folding sheath according to claim 1, wherein the anti-filament winding apparatus for an anti-folding sheath further comprises a bypass member mounted to the control end of the control slider, the bypass channel is formed in the bypass member, and the bypass member is detachably mounted to the control end.

6. The apparatus of claim 1, further comprising a laser emitter, a laser emitter mounting bracket, and a third rail, wherein the laser emitter is mounted to the laser emitter mounting bracket, and the laser emitter mounting bracket is slidably mounted to the third rail; when the inner sheath pipe rotates, the laser emitting piece mounting rack can slide along the third rail in a coordinated manner.

7. The apparatus according to claim 6, wherein the laser emitting member mounting frame comprises a base frame slidably mounted on the third rail, and an adjusting frame having one end mounted on the base frame and the other end extending in the direction of the control slider and extending above the control slider for adjusting the distance between the laser emitting member and the inner sheath.

8. The bending-resistant wire winding apparatus for a bending-resistant sheath according to claim 1, wherein the bending-resistant wire winding apparatus for a bending-resistant sheath further comprises a welding ring adapted to be installed outside the inner sheath, an end of the bending-resistant wire being adapted to be interposed between the inner sheath and the welding ring.

9. A method for producing an anti-bending sheath tube is characterized by comprising the following steps:

sleeving an inner-layer sheath tube of the anti-bending sheath tube on a core rod of anti-bending filament winding equipment of the anti-bending sheath tube, clamping the core rod with the inner-layer sheath tube between two clamping pieces of the anti-bending filament winding equipment of the anti-bending sheath tube, and enabling the core rod with the inner-layer sheath tube to penetrate through an avoiding channel of a control slide block;

the head end of the anti-folding wire penetrates through a guide channel of the control slide block, and is fixed at a preset position of the inner sheath;

controlling the core rod with the inner sheath tube to rotate and controlling the control slide block to move cooperatively;

when the anti-folding wire is wound to the tail end of the inner sheath, fixing the tail end of the anti-folding wire at a preset position of the tail end of the inner sheath;

and taking down the core rod with the inner-layer sheath tube, sleeving an outer-layer sheath tube and a heat-shrinkable tube on the outer side of the core rod with the inner-layer sheath tube, and carrying out heat treatment.

10. The method for producing an anti-bending sheath according to claim 9, wherein the step of controlling the rotation of the core rod with the inner sheath and the cooperative movement of the control slider further comprises:

and controlling the coiled and wound anti-bending wires to cooperatively move along with the rotation of the core rod with the inner layer sheath tube.

11. The method of producing an antiflex sheath of claim 9, wherein the winding apparatus further includes a laser emitter mounted to a laser emitter mounting bracket and a laser emitter mounting bracket for welding the antiflex wire to the inner sheath.

12. The method for producing an anti-bending sheath according to claim 10, wherein the step of controlling the rotation of the core rod with the inner sheath and the cooperative movement of the control slider further comprises:

and controlling the laser emitting piece mounting frame to carry the laser emitting piece to cooperatively move along with the rotation of the core rod with the inner-layer sheath tube.

13. The method for producing an anti-kink sheath according to claim 9, wherein the step of passing a head end of an anti-kink wire through the guide channel of the control slider and fixing the head end of the anti-kink wire at a predetermined position of the inner sheath further comprises:

sleeving the welding ring outside the inner sheath;

placing the head end of the anti-folding wire between the inner sheath and the welding ring;

and welding the overlapped part of the anti-folding wire and the welding ring.

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