Disclosure of Invention
The problem underlying the present application is to provide a prosthetic valve delivery device with improved maneuverability.
For the technical problems, the application provides the following technical scheme:
A prosthetic valve delivery device, comprising:
A valve release adjustment assembly comprising a base;
the fixed seat is arranged on the base body;
the first adjusting mechanism is arranged on the base body, is mutually limited with the fixed seat in a first direction and is used for adjusting the valve release adjusting assembly to move relative to the fixed seat in the first direction;
The base body is provided with a first limiting part, and the first limiting part is used for limiting the fixing seat in the first direction.
The invention has the following beneficial effects:
according to the invention, the first adjusting mechanism is arranged on the basal body of the valve release adjusting assembly, so that the first adjusting mechanism can adjust the movement of the valve release adjusting assembly relative to the fixed seat in the first direction, compared with a prosthetic valve conveying device without the first adjusting mechanism, the manipulability of the prosthetic valve conveying device can be improved, the position of the valve release adjusting assembly before releasing the valve can be more accurately adjusted through adjusting the position of the valve release adjusting assembly in the first direction, the accuracy of the position of the valve release adjusting assembly for releasing the valve can be further improved, the surgical effect of implanting the prosthetic valve is better, and the moving distance of the valve release adjusting assembly can be controlled through arranging the first limiting part on the basal body to limit the fixed seat, so that the valve release adjusting assembly can not excessively extend into heart tissues, and the safety of the implantation valve surgery can be improved.
Further, the prosthetic valve delivery device comprises a first locking piece matched with the fixed seat, wherein the first locking piece is used for enabling the fixed seat and the base body to be fixed relatively in the circumferential direction, and when the first locking piece moves along the first direction along with the fixed seat to be abutted with the first limiting portion, the first limiting portion limits the fixed seat to move continuously.
In the implementation process, through setting up first locking piece, can make fixing base and base member fixed relatively in circumference, avoid the base member to rotate and cause valve release adjusting assembly's removal relatively to first locking piece can realize the spacing to the fixing base removal with first spacing portion cooperation.
Further, two limiting planes are arranged on the base body, the two limiting planes are arranged at intervals along the circumferential direction of the base body, the first locking piece is provided with a clamping opening, and the clamping opening clamps the two limiting planes.
In the implementation process, two limiting planes are arranged on the base body, and the clamping opening is formed in the first locking piece to clamp the two limiting planes, so that the first locking piece can limit the rotation of the fixing seat and the base body in the circumferential direction.
Further, the first locking piece comprises a connecting arm and two limiting arms, the two limiting arms are arranged at intervals, the two limiting arms are connected with the two limiting arms to form a clamping opening, the two limiting arms are respectively abutted with the two limiting planes to limit the fixing base to rotate circumferentially relative to the base body, and the first limiting part is a protruding part positioned at two ends of the limiting planes.
In the implementation process, through setting up the first locking piece into the structure that the linking arm connects two spacing arms, can form the card and hold the opening in order to realize limiting fixing base and base member at the ascending rotation of circumference with spacing plane cooperation, can also make spacing arm and spacing plane both ends's convex part cooperation realize the spacing to the fixing base removal, the simple structure of first locking piece just realizes that spacing reliability is higher.
Further, an external thread is arranged on the base body and is in threaded connection with the first adjusting mechanism, the limiting plane is formed by trowelling the external thread, and the protruding portion is a part of the external thread.
In the implementation process, the external threads of the substrate are smoothed to form the limiting plane, and the parts of the external threads are used as the convex parts, so that the preparation process of the substrate is simple, and the reliability of limiting is higher.
Further, a first through hole is formed in the fixing base, and the first locking piece penetrates through the first through hole.
In the implementation process, the first through hole is formed in the fixing base, so that the first locking piece can penetrate through the first through hole to be matched with the limiting plane and the protruding portion, and the preparation process of the fixing base is simple.
Further, at least part of the connecting arm is accommodated in the first through hole, and the outer surface of the connecting arm is coplanar with the outer surface of the fixing seat.
In the implementation process, the outer surface of the connecting arm and the outer surface of the fixing base are coplanar, so that the outer surface of the fixing base is smoother, and other parts are conveniently sleeved outside the fixing base.
Further, the first adjusting mechanism comprises an adjusting knob, the adjusting knob is sleeved on the base body and is in threaded connection with the base body, and the adjusting knob and the fixing seat are mutually limited in the first direction.
In the implementation process, the adjusting knob is in threaded connection with the base body and is mutually limited with the fixing base in the first direction, so that the adjusting knob can rotate relative to the base body to drive the fixing base to move relative to the base body in the first direction, and the accuracy of threaded adjustment is higher.
Further, the prosthetic valve delivery device further includes a second locking member, the adjusting knob and the fixing base are limited in the first direction by the second locking member, and the second locking member is limited in cooperation with the fixing base and the adjusting knob, so that the adjusting knob can rotate around the first direction relative to the fixing base to drive the valve release adjusting assembly to move along the first direction.
In the implementation process, the second locking piece is arranged, so that the adjusting knob can rotate around the first direction relative to the fixing seat to drive the valve release adjusting assembly to move along the first direction, the adjusting mode is simple, the reliability is high, and the moving precision of the valve release adjusting assembly in the first direction is high.
Further, a first limit groove is formed in the fixing base, a second through hole is formed in the adjusting knob, the second through hole is opposite to the first limit groove, and the second locking piece is assembled on the base body through the second through hole and the first limit groove, so that the adjusting knob is limited to the fixing base in the first direction.
In the implementation process, the first limiting groove is formed on the fixing seat, the second through hole is formed on the adjusting knob, the second locking piece can penetrate through the second through hole to be matched with the first limiting groove, mutual limiting of the adjusting knob and the fixing seat in the first direction is achieved, and the adjusting knob and the fixing seat are simple in structure and preparation process.
Further, the first limit groove is an annular groove extending along the circumferential direction of the fixing seat.
In the implementation process, the first limiting groove is arranged to be the annular groove, so that the second locking piece can rotate relative to the fixing seat and can be mutually limited with the fixing seat in the first direction when being accommodated in the annular groove.
Further, the valve release adjustment assembly includes an adjustment assembly mounted to the base and a delivery head connected to the adjustment assembly, the adjustment assembly being adjustable in the first direction.
In the implementation process, the adjusting component is arranged on the base body, the conveying head is connected with the adjusting component, so that the conveying head can move along the first direction along with the base body relative to the fixing seat, the adjusting component can further adjust the conveying head along the first direction, the implantation process of the artificial valve is more stable, and the release precision is higher.
Further, the fixing base is far away from one end of the first adjusting mechanism and is provided with an outer tube, the adjusting assembly comprises a first inner tube and a second adjusting mechanism, the conveying head comprises a first conveying part and a second conveying part, the first conveying part is located at the proximal end of the conveying head, the second conveying part is located at the distal end of the conveying head, the first inner tube is sleeved in the outer tube, the second adjusting mechanism is mounted on the base body and located at one side of the proximal end of the first adjusting mechanism, one end of the first inner tube is connected with the second adjusting mechanism, the other end of the first inner tube is connected with the conveying head, and the second adjusting mechanism is used for adjusting the first conveying part or the second conveying part to move along the first direction through the first inner tube.
In the implementation process, through setting up outer tube, first inner tube and second adjustment mechanism for second adjustment mechanism can drive first inner tube and remove along first direction along the outer tube relatively, thereby promotes the delivery head and removes along first direction, can make the delivery head break away from the outer tube, and the prosthetic valve of holding in the delivery head falls into in the heart from between delivery head and the outer tube thereupon, in order to realize implantation process.
Further, the second adjusting mechanism comprises a first adjusting handle and a first connecting piece, the first adjusting handle is sleeved outside the base body, the first connecting piece is arranged in the base body and is in threaded connection with the first adjusting handle, and the first connecting piece is connected with the first inner tube.
In the implementation process, through setting up threaded connection's first adjustment handle and first connecting piece, can make first adjustment handle adjust the precision higher.
Further, the base body is provided with a second limiting groove, the adjusting assembly comprises a third locking piece, and the third locking piece penetrates through the first adjusting handle to be contained in the second limiting groove and is used for limiting the first adjusting handle to move along the first direction relative to the base body.
In the implementation process, the first adjusting handle is limited to move along the first direction relative to the base body by the third locking piece, the first adjusting handle can rotate relative to the base body, and the third locking piece is simple in structure and high in reliability.
Further, the adjusting assembly comprises a movable part, a second inner tube, a third inner tube and a third adjusting mechanism, wherein the movable part is arranged in the second conveying part, the second inner tube is sleeved in the first inner tube, the third inner tube is sleeved in the second inner tube, the third adjusting mechanism is arranged on the base body and is positioned on one side of the proximal end of the second adjusting mechanism, one end of the second inner tube is connected with the movable part, the other end of the second inner tube is connected with the base body, one end of the third inner tube is connected with the second conveying part, the other end of the third inner tube is connected with the third adjusting mechanism, the first inner tube is connected with the first conveying part, the second adjusting mechanism adjusts the first conveying part to move along the first direction through the first inner tube, and the third adjusting mechanism adjusts the second conveying part to move along the first direction through the third inner tube.
In the implementation process, through setting up moving part, second inner tube, third inner tube and third adjustment mechanism and outer tube, first inner tube and second adjustment mechanism cooperation for second adjustment mechanism is through after the outer tube is pulled back to the at least part of first conveying portion of first inner tube, can further push away the moving part with second conveying portion through third adjustment mechanism, thereby makes the prosthetic valve break away from the delivery head completely, can make the implantation reliability of prosthetic valve higher.
Further, the third adjusting mechanism comprises a second adjusting handle and a second connecting piece, the second adjusting handle is sleeved outside the base body, the second connecting piece is arranged in the base body and is in threaded connection with the second adjusting handle, and the second connecting piece is connected with the third inner tube.
In the implementation process, through setting up threaded connection's second adjustment handle and second connecting piece, can make second adjustment handle adjust the precision higher.
Further, the base body is provided with a third limiting groove, the adjusting assembly comprises a fourth locking piece, and the fourth locking piece penetrates through the second adjusting handle to be contained in the third limiting groove and is used for limiting the second adjusting handle to move along the first direction relative to the base body.
In the implementation process, the second adjusting handle is limited to move along the first direction relative to the base body by the fourth locking piece, the second adjusting handle can rotate relative to the base body, and the fourth locking piece is simple in structure and high in reliability.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.
It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.
In the embodiment of the application, the distal end is the end far away from the operator, and the proximal end is the end close to the operator.
Referring to fig. 1 to 3, fig. 1 is a schematic perspective view of a prosthetic valve delivery device according to an embodiment of the present application, fig. 2 is a schematic cross-sectional view of a prosthetic valve delivery device according to an embodiment of the present application, and fig. 3 is an exploded schematic view of a portion of a prosthetic valve delivery device according to an embodiment of the present application.
The prosthetic valve delivery device 10 includes a valve release adjustment assembly 100, a fixing base 200 and a first adjustment mechanism 300, the valve release adjustment assembly 100 includes a base 110, the fixing base 200 is mounted on the base 110, the first adjustment mechanism 300 is mounted on the base 110 and is mutually limited with the fixing base 200 in a first direction X for adjusting movement of the valve release adjustment assembly 100 relative to the fixing base 200 in the first direction X, wherein a first limiting portion 111 is provided on the base 110, and the first limiting portion 111 is used for limiting the fixing base 200 in the first direction X.
Since the limiting function is mutual in the limiting structure, the valve release adjusting assembly 100 and the fixing base 200 can realize mutual limitation, so that limitation refers to limiting the moving distance of the valve release adjusting assembly 100 in the first direction X.
According to the invention, the first adjusting mechanism 300 is arranged on the base 110 of the valve release adjusting assembly 100, so that the first adjusting mechanism 300 can adjust the movement of the valve release adjusting assembly 100 relative to the fixed seat 200 in the first direction, compared with the artificial valve conveying device 10 without the first adjusting mechanism 300, the artificial valve conveying device 10 can improve the operability, the valve release adjusting assembly 100 can be positioned more accurately before the valve release is released by adjusting the position of the valve release adjusting assembly 100 in the first direction X, the accuracy of the position of the valve release adjusting assembly 100 at the valve release position can be improved, the surgical effect of the implanted artificial valve 20 is better, and the moving distance of the valve release adjusting assembly 100 can be controlled by arranging the first limiting part 111 on the base 110 to limit the fixed seat 200, so that the valve release adjusting assembly 100 can not extend into heart tissue too much, and the safety of the implantation valve operation can be improved.
In some embodiments, the prosthetic valve delivery device 10 includes a first locking element 410 for use with the holder 200, the first locking element 410 being configured to fix the holder 200 and the base 110 relative to each other in a circumferential direction, and the first limiting portion 111 limiting the holder 200 from further movement when the first locking element 410 moves with the holder 200 in the first direction X into abutment with the first limiting portion 111.
By providing the first locking piece 410, the fixing base 200 and the base 110 can be fixed relatively in the circumferential direction, so that the movement of the valve release adjusting assembly 100 caused by the rotation of the base 110 relative to the fixing base 200 is avoided, and the first locking piece 410 can be matched with the first limiting part 111 to limit the movement of the fixing base 200.
In other embodiments, the first locking member 410 and the fixing base 200 may be integrally formed.
Referring to fig. 4 to fig. 6 together, fig. 4 is a schematic exploded view of a part of a prosthetic valve delivery device according to an embodiment of the present application, fig. 5 is a schematic exploded view of a part of a prosthetic valve delivery device according to an embodiment of the present application, and fig. 6 is a schematic three-dimensional structure of a base body of a prosthetic valve delivery device according to an embodiment of the present application. In some embodiments, two limiting planes 112 are disposed on the base 110, the two limiting planes 112 are disposed at intervals along the circumferential direction of the base 110, and the first locking member 410 is provided with a clamping opening, where the clamping opening clamps the two limiting planes 112.
By providing two limiting planes 112 on the base 110, a clamping opening is provided in the first locking member 410 to clamp the two limiting planes 112, so that the first locking member 410 can limit the rotation of the fixing base 200 and the base 110 in the circumferential direction.
In another embodiment, only one limiting plane 112 may be disposed on the base 110 to cooperate with the first locking member 410 to limit the base 110 and the fixing base 200 in the circumferential direction of the base 110.
In some embodiments, the first locking member 410 includes a connecting arm 411 and two limiting arms 412, the two limiting arms 412 are disposed at intervals, a clamping opening is formed between the two limiting arms 412, the connecting arm 411 connects the two limiting arms 412, the two limiting arms 412 respectively abut against the two limiting planes 112 to limit the fixing base 200 to rotate circumferentially relative to the base 110, and the first limiting portion 111 is a protrusion located at two ends of the limiting plane 112.
Through setting up first locking piece 410 to the structure that linking arm 411 connects two spacing arms 412, can form the card and hold the opening in order to realize limiting fixing base 200 and base body 110 rotation in the circumference with spacing plane 112 cooperation, can also make spacing arm 412 and spacing plane 112 both ends's convex part cooperation realize the spacing to fixing base 200 removal, first locking piece 410's simple structure and the reliability that realizes spacing are higher.
In other embodiments, the mutual limitation of the fixing base 200 and the base 110 in the circumferential direction and the mutual limitation in the first direction X may be achieved by two structures, respectively. For example, a groove (not shown) penetrating in the first direction X may be formed on the base 110, a protrusion (not shown) may be provided on the fixing base 200, the protrusion may be accommodated in the groove to limit the fixing base 200 in the circumferential direction of the base 110, a sliding groove (not shown) extending in the first direction X may be provided on the base 110, and a slider (not shown) may be provided on the fixing base 200, and the slider may only slide in the sliding groove to limit the fixing base 200 and the base 110 to each other in the first direction X.
In some embodiments, the base 110 is provided with an external thread 113 for being screwed with the first adjusting mechanism 300, the limiting plane 112 is formed by trowelling the external thread 113, and the protruding part is a part of the external thread 113.
The external threads 113 of the base 110 are smoothed to form the limiting plane 112, and the part of the external threads 113 is used as a convex part, so that the preparation process of the base 110 is simple and the reliability of limiting is higher.
In some embodiments, the fixing base 200 is formed with a first through hole 210, and the first locking member 410 penetrates the first through hole 210.
The first through hole 210 is formed on the fixing base 200, so that the first locking piece 410 can penetrate through the first through hole 210 to be matched with the limit plane 112 and the first limit part 111, and the preparation process of the fixing base 200 is simple.
In some embodiments, at least a portion of the connection arm 411 is received in the first through hole 210, and an outer surface of the connection arm 411 is coplanar with an outer surface of the fixing base 200.
By making the outer surface of the connecting arm 411 coplanar with the outer surface of the fixing base 200, the outer surface of the fixing base 200 can be smoother, and other components can be conveniently sleeved outside the fixing base 200.
In some embodiments, the first adjusting mechanism 300 includes an adjusting knob, which is sleeved on the base 110 and is in threaded connection with the base 110, and the adjusting knob and the fixing base 200 are mutually limited in the first direction X.
The adjusting knob is in threaded connection with the base 110 and is mutually limited with the fixing seat 200 in the first direction X, so that the adjusting knob can rotate relative to the base 110 to drive the fixing seat 200 to move relative to the base 110 in the first direction X, and the accuracy of threaded adjustment is high.
In other embodiments, the first adjustment mechanism 300 may also include an adjustment member (not shown) slidably coupled to the base 110. For example, the adjusting member may be sleeved on the base 110 and fixedly connected with the fixing base 200, and the base 110 may be provided with a sliding slot extending along the first direction X, and the adjusting member may be provided with a sliding block, where the sliding block may slide in the sliding slot so that the adjusting member may drive the fixing base 200 to slide along the first direction X relative to the base 110.
In some embodiments, the adjustment knob is sleeved outside of the first locking member 410, which can provide a more regular appearance to the prosthetic valve delivery device 10.
In other embodiments, the adjusting knob may not cover the first locking member 410, and the first locking member 410 may protrude from the fixing base 200, which is not limited herein.
In some embodiments, the prosthetic valve delivery device 10 may further include a second locking member 420 by which the adjustment knob is retained with the holder 200 in the first direction X, the second locking member 420 being cooperatively retained with the holder 200 and the adjustment knob for enabling rotation of the adjustment knob relative to the holder 200 about the first direction X to move the valve release adjustment assembly 100 in the first direction X.
By arranging the second locking piece 420, the adjusting knob can rotate around the first direction X relative to the fixing seat 200 to drive the valve release adjusting assembly 100 to move along the first direction X, the adjusting mode is simple and has higher reliability, and the moving precision of the valve release adjusting assembly 100 in the first direction X is higher.
In other embodiments, the first locking member 410 and the fixing base 200 may be integrally formed.
In some embodiments, the fixing base 200 is formed with a first limiting groove 220, the adjusting knob is formed with a second through hole 310, the second through hole 310 is opposite to the first limiting groove 220, and the second locking member 420 is assembled on the base 110 through the second through hole 310 and the first limiting groove 220, so that the adjusting knob is limited to each other in the first direction X relative to the fixing base 200.
Through forming first spacing groove 220 on fixing base 200, form second through-hole 310 on adjust knob for second locking piece 420 can run through second through-hole 310 in order to cooperate with first spacing groove 220, realize adjust knob and fixing base 200 spacing each other in first direction X, adjust knob and fixing base 200's structure and preparation process are simple.
In some embodiments, the first limiting groove 220 is an annular groove extending along the circumference of the fixing base 200.
By arranging the first limiting groove 220 as an annular groove, when the second locking piece 420 is accommodated in the annular groove, the second locking piece can rotate relative to the fixing seat 200 and can mutually limit the second locking piece and the fixing seat 200 in the first direction X.
In other embodiments, the first limiting groove 220 may also be one or more arc grooves extending along the circumferential direction of the fixing base 200, which is not limited herein.
Referring to fig. 7, fig. 7 is an exploded view of a portion of a prosthetic valve delivery device according to an embodiment of the present application. In some embodiments, the valve release adjustment assembly 100 includes an adjustment assembly 120 and a delivery head 130, the adjustment assembly 120 being mounted to the base 110, the delivery head 130 being coupled to the adjustment assembly 120, the delivery head 130 being configured to receive the prosthetic valve 20 and to guide the prosthetic valve 20 when delivering the prosthetic valve 20, the adjustment assembly 120 being configured to adjust the delivery head 130 in a first direction X to release the prosthetic valve 20.
By mounting the adjustment assembly 120 to the base 110, the delivery head 130 is connected with the adjustment assembly 120, so that the delivery head 130 can move along the first direction X along with the base 110 relative to the fixing seat 200, and the adjustment assembly 120 can further adjust the delivery head 130 along the first direction X, so that the implantation process of the prosthetic valve 20 is more stable, and the release precision is higher.
Referring to fig. 8, fig. 8 is an enlarged partial view of a part of a prosthetic valve delivery device according to an embodiment of the present application. In some embodiments, an end of the fixing base 200 away from the first adjusting mechanism 300 is provided with an outer tube 230, the adjusting assembly 120 includes a first inner tube 121 and a second adjusting mechanism 122, the delivery head 130 includes a first delivery portion 131 and a second delivery portion 132, the first delivery portion 131 is located at a proximal end of the delivery head 130, the second delivery portion 132 is located at a distal end of the delivery head 130, the first inner tube 121 is sleeved in the outer tube 230, the second adjusting mechanism 122 is mounted on the base 110 and located at a proximal end side of the first adjusting mechanism 300, that is, the second adjusting mechanism 122 is located at an end of the first adjusting mechanism 300 away from the delivery head 130, one end of the first inner tube 121 is connected with the second adjusting mechanism 122, the other end is connected with the delivery head 130, and the second adjusting mechanism 122 is used for adjusting the first delivery portion 131 to move in a direction approaching the base 110 or adjusting the second delivery portion 132 to move in a direction moving away from the base 110 in the first direction X through the first inner tube 121.
By providing outer tube 230, first inner tube 121, and second adjustment mechanism 122, second adjustment mechanism 122 is enabled to move first inner tube 121 relative to outer tube 230 in first direction X. Specifically, the first inner tube 121 may be connected to the first delivery portion 131, and the second adjusting mechanism 122 may be capable of adjusting the first delivery portion 131 to move in a direction approaching the base 110 along the first direction X, or the first inner tube 121 may be connected to the second delivery portion 132, and the second adjusting mechanism 122 may be capable of adjusting the second delivery portion 132 to move in a direction separating from the base 110 along the first direction X, which may enable the second delivery portion 132 to separate from the first delivery portion 131, so that the prosthetic valve 20 accommodated in the delivery head 130 falls into the heart from between the first delivery portion 131 and the second delivery portion 132, thereby implementing the implantation procedure.
In other embodiments, the second adjustment mechanism 122 may also be located on the distal side of the first adjustment mechanism 300, without limitation.
In some embodiments, the second adjusting mechanism 122 includes a first adjusting handle 1221 and a first connecting member 1222, the first adjusting handle 1221 is sleeved outside the base 110, the base 110 is formed with a first accommodating groove 114 penetrating the base 110 along a radial direction of the base 110, the first connecting member 1222 is disposed in the first accommodating groove 114, the first connecting member 1222 is exposed out of the base 110 and is in threaded connection with the first adjusting handle 1221, and the first connecting member 1222 is connected with the first inner tube 121.
By providing the first adjustment handle 1221 and the first connector 1222 that are screw-coupled, the first adjustment handle 1221 can be made with high adjustment accuracy.
In other embodiments, the second adjustment mechanism 122 may also be an adjustment member (not shown) slidably coupled to the base 110. For example, the adjusting member may be sleeved on the base 110 and fixedly connected with the first inner tube 121, and the base 110 may be provided with a sliding slot extending along the first direction X, and the adjusting member may be provided with a sliding block, so that the sliding block may slide in the sliding slot to enable the adjusting member to drive the first inner tube 121 to slide along the first direction X relative to the base 110.
In some embodiments, the base 110 is formed with a second limiting groove 115, and the adjusting assembly 120 may include a third locking member 123, where the third locking member 123 penetrates the first adjusting handle 1221 to be received in the second limiting groove 115, so as to limit the first adjusting handle 1221 from moving along the first direction X relative to the base 110.
By providing the third locking member 123 to restrict the movement of the first adjustment handle 1213 in the first direction X relative to the base 110, and the first adjustment handle 1221 can be rotated relative to the base 110, the third locking member 123 is simple in structure and high in reliability.
In other embodiments, the third locking member 123 and the first adjustment handle 1221 may be integrally formed.
Referring to fig. 9, fig. 9 is a schematic diagram illustrating a release state of a prosthetic valve delivery device according to an embodiment of the application. In some embodiments, the adjusting assembly 120 includes a movable member 124, a second inner tube 125, a third inner tube 126, and a third adjusting mechanism 127, where the movable member 124 is disposed in the second conveying portion 132, the second inner tube 125 is sleeved in the first inner tube 121, the third inner tube 126 is sleeved in the second inner tube 125, the third adjusting mechanism 127 is mounted on the base 110 and located at a proximal side of the second adjusting mechanism 122, one end of the second inner tube 125 is connected to the movable member 124, the other end is connected to the base 110, one end of the third inner tube 126 is connected to the second conveying portion 132, the other end is connected to the third adjusting mechanism 127, the first inner tube 121 is connected to the first conveying portion 131, the second adjusting mechanism 122 adjusts the first conveying portion 131 to move in a direction approaching the base 110 along the first direction X through the first inner tube 121 (as shown in fig. 9 b), and the third adjusting mechanism 127 adjusts the second conveying portion 132 to move in a direction moving away from the base 110 along the first direction X through the third inner tube 126 (as shown in fig. 9 c). After the delivery is completed, the third adjusting mechanism 127 can adjust the second delivery portion 132 to move in the direction approaching the base 110 along the first direction X through the third inner tube 126, and the second adjusting mechanism 122 can adjust the first delivery portion 131 to move in the direction separating from the base 110 along the first direction X through the first inner tube 121, so as to restore the prosthetic valve delivery device 10.
By providing the movable member 124, the second inner tube 125, the third inner tube 126, and the third adjusting mechanism 127 to cooperate with the outer tube 230, the first inner tube 121, and the second adjusting mechanism 122, after the second adjusting mechanism 122 pulls at least part of the first delivery portion 131 back to the outer tube 230 through the first inner tube 121, the second delivery portion 132 can be further pushed away from the movable member 124 by the third adjusting mechanism 127, so that the prosthetic valve 20 is completely separated from the delivery head 130, and the implantation reliability of the prosthetic valve 20 can be improved.
In other embodiments, the third adjustment mechanism 127 may also be located on the distal side of the second adjustment mechanism 122, without limitation.
In some embodiments, the third adjusting mechanism 127 includes a second adjusting handle 1271 and a second connecting piece 1272, the second adjusting handle 1271 is sleeved outside the base 110, the base 110 is formed with a second accommodating groove 116 penetrating the base 110 along the radial direction of the base 110, the second connecting piece 1272 is disposed in the second accommodating groove 116, the second connecting piece 1272 is exposed out of the base 110 and is in threaded connection with the second adjusting handle 1271, and the second connecting piece 1272 is connected with the third inner tube 126.
By providing the second adjustment handle 1271 and the second connector 1272 which are screw-coupled, the second adjustment handle 1271 can be adjusted with higher accuracy.
In other embodiments, the third adjustment mechanism 127 may also be an adjustment member (not shown) slidably coupled to the base 110. For example, the adjusting member may be sleeved on the base 110 and fixedly connected with the third inner tube 126, and the base 110 may be provided with a sliding slot extending along the first direction X, and the adjusting member may be provided with a sliding block, where the sliding block may slide in the sliding slot so that the adjusting member may drive the third inner tube 126 to slide along the first direction X relative to the base 110.
In some embodiments, the base 110 is formed with a third limiting slot 117, and the adjusting assembly 120 includes a fourth locking member 128, where the fourth locking member 128 penetrates the second adjusting handle 1271 to be received in the third limiting slot 117, so as to limit the second adjusting handle 1271 to move along the first direction X relative to the base 110.
By providing the fourth locking member 128 to restrict the movement of the second adjustment handle 1271 in the first direction X relative to the base 110, and the second adjustment handle 1271 can be rotated relative to the base 110, the fourth locking member 128 is simple in structure and high in reliability.
In other embodiments, the fourth locking member 128 and the second adjustment handle 1271 may be integrally formed.
In some embodiments, the first delivery portion 131 is formed with a first receiving cavity 1311 and the second delivery portion 132 is formed with a second receiving cavity 1321, and the prosthetic valve 20 may be partially received within the first receiving cavity 1311 and another portion received within the second receiving cavity 1321. After the first conveying part 131 and the second conveying part 132 are separated, the prosthetic valve 20 is still partially accommodated in the second accommodating cavity 1321, and the movable piece 124 is arranged on the second conveying part 132 and separated from the second conveying part 132, so that the prosthetic valve 20 can be further separated from the conveying head 130, and the implantation effect is better.
In other embodiments, one of the first and second receiving cavities 1311, 1321 is less deep in the first direction X or one of the first and second delivery portions 131, 132 is not provided with receiving cavities, a substantial portion or all of the prosthetic valve 20 is received within one of the first and second receiving cavities 1311, 1321. The adjusting assembly 120 may not be provided with the movable member 124, the second inner tube 125, the third inner tube 126 and the third adjusting mechanism 127, and directly adjust through the second adjusting mechanism 122 and the first inner tube 121, for example, only the first accommodating cavity 1311 is provided, then the second adjusting mechanism 122 drives the first conveying portion 131 to move to separate from the second conveying portion 132 through the first inner tube 121, and for example, only the second accommodating cavity 1321 is provided, then the second adjusting mechanism 122 drives the second conveying portion 132 to move to separate from the first conveying portion 131 through the first inner tube 121, so that the prosthetic valve 20 can fall into the heart entirely.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and variations will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application. It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.