CN116250968A

CN116250968A - Interventional heart valve prosthesis delivery device and handle thereof

Info

Publication number: CN116250968A
Application number: CN202310239884.5A
Authority: CN
Inventors: 李晓鹏; 殷江; 袁虎; 沈斌; 钟伟
Original assignee: Shanghai Yixin Medical Devices Co ltd
Current assignee: Shanghai Yixin Medical Devices Co ltd
Priority date: 2023-03-13
Filing date: 2023-03-13
Publication date: 2023-06-13

Abstract

The application relates to the technical field of medical equipment, and provides an interventional heart valve prosthesis conveying device and a handle thereof, wherein the interventional heart valve prosthesis conveying device comprises: a handle; a delivery assembly extending within the handle and axially movable relative to the handle; the conveying assembly comprises a transmission rod; the at least two first driving components are distributed along the circumference of the transmission rod, and the first driving components are in transmission connection with the transmission rod and are used for driving the transmission rod to axially move relative to the handle. Through the technical scheme of this application, can provide an intervention formula heart valve prosthesis conveyor who improves medical personnel operating convenience and handle thereof.

Description

Interventional heart valve prosthesis delivery device and handle thereof

Technical Field

The application relates to the technical field of medical equipment, in particular to an interventional heart valve prosthesis conveying device and a handle thereof.

Background

Heart valve disease is one of the most common heart diseases in China, wherein the heart valve disease is mainly valve damage caused by rheumatic fever; with the development of population aging in recent years, valve degeneration (including calcification, myxodegeneration and the like) and metabolic valve damage are increasing in China, and at present, a novel treatment method with smaller wound, fewer complications and rapid postoperative rehabilitation is provided for medical staff by implanting heart valve prosthesis through medical minimally invasive surgery.

During valve treatment, the heart valve prosthesis needs to be conveyed and controlled to be in a shape and released by a conveyor, but the prior conveyor sometimes needs to rotate an operating handle to implant the valve prosthesis during the operation of medical staff, but after the operating handle rotates, the operating direction of the medical staff is correspondingly adjusted, so that the operation is inconvenient.

Disclosure of Invention

The technical problem to be solved by the application is to provide an interventional heart valve prosthesis conveying device and a handle thereof, wherein the interventional heart valve prosthesis conveying device is convenient to operate.

In order to solve the technical problems, the application adopts the following technical scheme:

in a first aspect, the present application provides a heart valve prosthesis delivery device comprising: a handle; a delivery assembly extending within the handle and axially movable relative to the handle; the conveying assembly comprises a transmission rod; the first driving assemblies are distributed along the circumferential direction of the transmission rod, are in transmission connection with the transmission rod and are used for driving the transmission rod to axially move relative to the handle.

As one embodiment, the device comprises a second driving component, the second driving component is arranged on the transmission rod, the first driving component is in transmission connection with the second driving component, and the first driving component is suitable for driving the second driving component to rotate so as to enable the transmission rod to axially move relative to the handle.

As one embodiment, the first driving assembly comprises a first driving piece and a first supporting piece sleeved on the periphery of the first driving piece, the first supporting piece is in tight fit connection with the first driving piece, and a first driving part is arranged at the end part of the first driving piece; the second driving assembly comprises a second driving piece and a second supporting piece sleeved on the periphery of the second driving piece, the second supporting piece is in tight fit connection with the second driving piece, a second driving part is arranged at the end part of the second driving piece and meshed with the first driving part, the transmission rod penetrates through the second driving piece and is in threaded transmission connection with the second driving piece, and the first driving piece is suitable for driving the second driving piece to rotate so that the transmission rod axially moves relative to the handle.

As one embodiment, the first driving part includes a plurality of first driving teeth, the second driving part includes a plurality of second driving teeth, a driving tooth slot is formed between two adjacent second driving teeth, and the plurality of first driving teeth are meshed with the plurality of driving tooth slots.

As one embodiment, the power rod comprises a power rod, the first driving piece is provided with a concave portion, one end of the concave portion is formed by concave formation of the first driving piece towards the direction of the first driving portion, and one end of the power rod can be inserted into the concave portion to drive the first driving piece to rotate.

As one embodiment, the handle includes a first housing, the first housing is provided with a mounting groove corresponding to the first driving component, an annular boss is provided in the mounting groove, and the first supporting member is located in the mounting groove and is abutted to the annular boss.

As one implementation mode, a limiting groove is formed in the first shell, and the second supporting piece is embedded in the limiting groove.

As an embodiment, an end cover for resisting the first supporting piece is further arranged at the opening position of the mounting groove, and the end cover is detachably connected with the groove peripheral wall of the mounting groove.

As one embodiment, a cavity is arranged in the first shell, the cavity is communicated with the limit groove, and the cavity extends along the axial direction of the first shell;

the transmission member is arranged in the cavity, the conveying assembly further comprises a sheath tube, the proximal end of the sheath tube and the distal end of the transmission rod are respectively connected with the transmission member, and the transmission rod is suitable for moving along the axial direction of the cavity, so that the transmission member slides along the cavity and drives the sheath tube to move relative to the axial direction of the first shell.

As an implementation mode, the sheath proximal end sleeve is provided with a reinforcing pipe, the reinforcing pipe is fixedly connected with the sheath, the proximal end of the reinforcing pipe is fixedly connected with the transmission piece, and the reinforcing pipe is provided with a plurality of holes for gluing.

As an implementation mode, the proximal end of the transmission rod is provided with a sliding block, the first shell is internally provided with a sliding groove, the sliding block is embedded in the sliding groove and is in sliding fit with the sliding groove, and the proximal end of the sliding groove is provided with a stop part for limiting and matching with the stop of the sliding block.

As one embodiment, a channel is arranged in the distal end of the first shell, and a conical head is arranged at the distal end of the reinforcing tube and used for penetrating through the channel; the channel is communicated with the cavity, and the sheath tube passes through the channel and is connected with the transmission piece in the cavity.

In a second aspect, the present application provides a handle for an interventional heart valve prosthesis delivery device, comprising a first housing provided circumferentially with at least two mounting slots for receiving a first drive assembly.

As one embodiment, a plug post is arranged at the distal end of the first shell, and a plurality of teeth are arranged at the tail end of the plug post;

the handle comprises a second shell, a plugging groove is formed in the proximal end of the second shell, and the plugging column is plugged in the plugging groove; the proximal end of the second shell is provided with a containing groove for containing a plurality of teeth, the containing groove is communicated with the inserting groove, and the containing groove can contain a plurality of teeth to rotate.

As one embodiment, the first housing comprises a first upper housing and a second lower housing, and the first upper housing and the second lower housing are mutually buckled;

the second shell comprises a second upper shell and a second lower shell, and the second upper shell and the second lower shell are mutually buckled.

As one embodiment, the first housing is provided with three of the mounting grooves in the circumferential direction.

The technical scheme of the application has the following effects:

1. be equipped with conveying subassembly in conveyor's the handle, conveying subassembly includes the transfer line, conveyor still includes two at least first drive assemblies, first drive assembly arranges along the circumference of transfer line to be connected with the transfer line transmission, through arranging two at least first drive assemblies in the circumference of transfer line, when the handle takes place to rotate, medical personnel can operate first drive assembly through a plurality of angles for the drive transfer line is for handle axial displacement, implants valve prosthesis in vivo, thereby improves conveyor's convenience of operation.

2. A plurality of mounting grooves are evenly distributed on the periphery of the first shell, and the mounting grooves correspondingly accommodate the first driving assembly, so that medical staff can conveniently drive the transmission rod to axially move relative to the first shell through the first driving assembly on the handle.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a partial structure of a heart valve prosthesis delivery device provided in an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of the structure of FIG. 1 in the direction A-A;

FIG. 3 is a schematic view of a partial cross-sectional structure of a heart valve prosthesis delivery device provided in an embodiment of the present application;

FIG. 4 is an enlarged schematic view of the portion A in FIG. 3;

FIG. 5 is a schematic view of a portion of a heart valve prosthesis delivery device according to one embodiment of the present application;

FIG. 6 is a schematic view of a heart valve prosthesis delivery device according to an embodiment of the present application from another perspective;

FIG. 7 is a schematic view of a partially exploded construction of a heart valve prosthesis delivery device provided in an embodiment of the present application;

FIG. 8 is an enlarged schematic view of the portion A in FIG. 7;

FIG. 9 is a schematic view of an exploded structure of a heart valve prosthesis delivery device provided in an embodiment of the present application;

FIG. 10 is a schematic structural view of a heart valve prosthesis delivery device provided in an embodiment of the present application;

FIG. 11 is a schematic view of the cross-sectional structure in the direction A-A of FIG. 10;

fig. 12 is an enlarged schematic view of the portion a in fig. 11.

Icon: 1-a handle; 11-a first housing; 12-a limit groove; 13-chamber; 14-a mounting groove; 141-an annular boss; 15-end caps; 16-a sliding groove; 17-channel; 18-plug-in columns; 19-projecting sections; 20-a second housing; 201-a mounting cavity; 202-limiting space; 203-a receiving slot; 21-a first drive assembly; 211-a first driving member; 2111—a first drive section; 2112-depressions; 212-a first support; 22-a second drive assembly; 221-a second driver; 2211-a second driving part; 222-a second support; 3-a transmission rod; 31-sliding blocks; 4-a power lever; 5-a transmission member; 6-sheath; 7-reinforcing the tube; 71-a conical head; 72-well; 8-an inner tube; 9-an outer sleeve; 10-fixing piece; 100-locking piece.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

It should be noted that: like reference numerals and letters denote 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 term "distal" means an end of components in the valve delivery handle near heart tissue, and "proximal" means an end of the valve delivery handle near an operator, and the terms "first", "second", and the like are used merely to distinguish the description and are not to be construed as indicating or implying relative importance.

In a first aspect, as shown in fig. 10 and 12, the present application describes an interventional heart valve prosthesis delivery device, the delivery device comprises a handle 1, a sheath tube 6 and an inner tube 8 extend in the handle 1, the inner tube 8 extends in the sheath tube 6, a distal end of the inner tube 8 is connected with a guiding head, a containing space for containing a heart valve prosthesis is provided between the sheath tube 6 and the inner tube 8, and the sheath tube 6 can move axially relative to the inner tube 8 to release or retract the heart valve prosthesis.

Wherein the sheath 6 comprises a receiving tube section and an extension tube section, the radial dimension of the receiving tube section is larger than that of the extension tube section, and the receiving tube section is positioned at the distal end of the sheath and is used for receiving the heart valve prosthesis.

Optionally, the guide head is the toper structure, and the end portion of guide head has streamlined appearance, can avoid fish tail blood vessel inner wall, also is favorable to guiding whole conveyor to advance along the blood vessel, and the afterbody of guide head is planar structure for support tight heart valve prosthesis.

As shown in fig. 1 and 5, the present embodiment provides an interventional heart valve prosthesis delivery device, further comprising a delivery assembly extending within the handle 1 and axially movable relative to the handle 1, the delivery assembly for delivering a heart valve prosthesis, wherein the delivery assembly comprises a drive rod 3, the drive rod 3 being axially movable relative to the handle 1; the conveying device further comprises at least two first driving assemblies 21, the first driving assemblies 21 are distributed along the circumferential direction of the transmission rod 3, the first driving assemblies 21 are in transmission connection with the transmission rod 3 to drive the transmission rod 3 to axially move relative to the handle 1, after the handle 1 rotates, a medical staff can select one of the first driving assemblies 21 to drive the transmission rod 3 to axially move relative to the handle 1 according to a position suitable for the operation of the medical staff through the at least two first driving assemblies 21 distributed along the circumferential direction of the transmission rod 3, and therefore the operation of the medical staff is facilitated.

Alternatively, each first driving assembly 21 may drive the transmission rod 3 to move axially relative to the handle 1, the inner tube 8 and the handle 1 are connected with the handle 1 by gluing or the like, the transmission rod 3 is connected with the sheath tube 6, and when the transmission rod 3 moves axially relative to the handle 1, the sheath tube 6 is synchronously driven to move axially relative to the handle 1, so that the sheath tube 6 moves axially relative to the inner tube 8, thereby realizing release or retraction of the heart valve prosthesis.

Optionally, two first drive assemblies 21 are evenly distributed along the circumference of the transmission rod 3, so that after the handle 1 rotates, a medical staff can conveniently select one of the first drive assemblies 21 suitable for self operation to operate, and the convenience of operation of the medical staff is improved.

As shown in fig. 5, as a preferred embodiment, three first driving components 21 are uniformly distributed in the circumferential direction of the transmission rod 3, and the axes of two adjacent first driving components 21 are 120 degrees, because the rotation angle of the handle 1 in the circumferential direction is unknown, the three first driving components 21 are arranged in the circumferential direction of the transmission rod 3, so that a medical staff can conveniently operate any one of the first driving components 21 to drive the transmission rod 3 to axially move relative to the handle 1, thereby realizing release or retraction of the heart valve prosthesis, and improving the convenience of the medical staff in operation of the conveying device.

As shown in fig. 2, 3, 7 and 8, as an embodiment, the conveying device further comprises a second driving assembly 22, the second driving assembly 22 is arranged on the transmission rod 3, the first driving assembly 21 is in driving connection with the second driving assembly 22, the first driving assembly 21 is suitable for driving the second driving assembly 22 to rotate, so that the transmission rod 3 moves axially relative to the handle 1, wherein, when the transmission rod 3 needs to move axially relative to the handle 1, the first driving assembly 21 drives the second driving assembly 22 to rotate.

Alternatively, the three first driving assemblies 21 are all in transmission connection with the second driving assembly 22, each first driving assembly 21 can drive the second driving assembly 22 to rotate relative to the transmission rod 3, in addition, when the first driving assembly 21 drives the second driving assembly 22 to rotate, the first driving assembly 21 also rotates, and the three first driving assemblies 21 synchronously rotate.

As shown in fig. 2 and 5, as an embodiment, the first driving assembly 21 includes a first driving member 211 and a first supporting member 212 sleeved on the outer periphery of the first driving member 211, where the first supporting member 212 is tightly connected with the first driving member 211, so that the first supporting member 212 has a clamping force on the first driving member 211, ensuring the stability of the structure, and one end of the first driving member 211 facing the transmission rod 3 is provided with a first driving portion 2111; the second driving assembly 22 comprises a second driving member 221 and a second supporting member 222 sleeved on the periphery of the second driving member 221, the second supporting member 222 is in tight fit connection with the second driving member 221, a second driving portion 2211 is arranged at the distal end of the second driving member 221, a first driving portion 2111 is meshed with the second driving portion 2211, the second driving member 221 is sleeved on the periphery of the transmission rod 3 and in threaded transmission connection with the transmission rod 3, the first driving member 211 is suitable for driving the second driving member 221 to rotate so as to drive the second driving member 221 relative to the transmission rod 3 and simultaneously axially move the transmission rod 3 relative to the handle 1, and when the transmission rod 3 needs to axially move relative to the handle 1, the first driving member 211 drives the second driving member 221 to rotate so as to axially move the transmission rod 3 relative to the handle 1.

As shown in fig. 5 and 7, as an embodiment, the first driving part 2111 includes a plurality of first driving teeth, the second driving part 2211 includes a plurality of second driving teeth, a driving tooth slot is formed between two adjacent second driving teeth, and the plurality of first driving teeth are correspondingly engaged with the plurality of driving tooth slots, so that the first driving member 211 synchronously drives the second driving member 221 to rotate when rotating.

Optionally, the ends of the three first driving members 211 are respectively provided with a first driving portion 2111, the three first driving portions 2111 are respectively engaged with the second driving portion 2211, and meanwhile, the axes of the three first driving members 211 are respectively perpendicular to the axes of the second driving members 221, so that the engagement angle between the first driving portions 2111 and the second driving portions 2211 is ensured, and the first driving members 211 can more smoothly drive the second driving members 221 to rotate relative to the transmission rod 3 when rotating around their own axes.

As shown in fig. 6 and 8, as an embodiment, the power rod 4 is included, the first driving member 211 is provided with a recess portion 2112, the recess portion 2112 is formed by recessing one end of the first driving member 211 toward the direction of the first driving portion 2111, and one end of the power rod 4 can be inserted into the recess portion 2112 to drive the first driving member 211 to rotate.

In the implementation process of the above solution, the conveying device further includes a power rod 4, where the first driving member 211 is provided with a recess portion 2112, the recess portion 2112 is formed by recessing one end of the first driving member 211 facing away from the first driving portion 2111 toward the first driving portion 2111, one end of the power rod 4 is adapted to the recess portion 2112, the power rod 4 includes an insertion end, and the insertion end can be inserted into the recess portion 2112, and when the power rod 4 is inserted into the recess portion 2112, the first driving member 211 can be driven to rotate, so that the first driving member 211 synchronously drives the second driving member 221 to rotate; when one end of the power rod 4 is separated from the recess 2112, the first driving member 211 stops rotating.

As shown in fig. 8, optionally, the three first driving members 211 are provided with concave portions 2112, the concave portions 2112 are columnar chambers 13, any cross section of the concave portions 2112 along the axial direction is a non-circular special shape, and one end of the power rod 4 inserted into the concave portions 2112 is matched with the structure of the concave portions 2112, so that the inserted end of the power rod 4 is clamped with the concave portions 2112.

As shown in fig. 1 and 5, as an embodiment, the handle 1 includes a first housing 11, the first housing 11 is provided with a mounting groove 14 corresponding to the first driving assembly 21, the mounting groove 14 is used for accommodating the first driving assembly 21 so that the first driving assembly 21 can rotate in the mounting groove 14, and a groove peripheral wall of the mounting groove 14 plays a role of stably supporting the first driving assembly 21.

The mounting groove 14 is further provided with an annular boss 141, the first support member 212 is located in the mounting groove 14 and abuts against the annular boss 141, the first driving member 211 is tightly matched with the first support member 212, and when the insertion end of the power rod 4 drives the first driving member 211 to rotate, the first support member 212 and the first driving member 211 synchronously rotate.

Optionally, the quantity of mounting groove 14 corresponds with the quantity of first drive assembly 21, and a plurality of mounting grooves 14 set up along the circumference equipartition of first casing 11 to make medical personnel can drive first drive assembly 21 through a plurality of angles and rotate, so that sheath 6 is for first casing 11 axial displacement, improves medical personnel's convenience of operation.

Optionally, the first supporting member 212 is a ball bearing, and includes an inner ring and an outer ring, the inner ring and the outer ring are connected through a plurality of ball transmissions, the diameter of the inner ring is equal to the radial dimension of one end of the first driving member 211, which is away from the first driving portion 2111, so that the first supporting member 212 can be sleeved on the periphery of the first driving member 211 to realize tight fit connection, and the outer ring is abutted against the annular boss 141, and is embedded in the mounting groove 14 at the same time, thereby ensuring the stability of the first supporting member 212. When the first driving member 211 rotates, the inner ring of the first supporting member 212 rotates synchronously with the first driving member 211, the outer ring of the first supporting member 212 is relatively stationary, and the first supporting member 212 provides a supporting function for the first driving member 211 on one hand, and ensures the stability of the first driving member 211 during rotation on the other hand.

Optionally, the first housing 11 is formed by buckling the first upper housing and the second lower housing, so that installation and maintenance of other parts in the first housing 11 are facilitated. The first upper shell is provided with one mounting groove 14, and meanwhile, one part of the other two mounting grooves 14 is also arranged, the other parts of the other two mounting grooves 14 are arranged on the second lower shell, and the first upper shell and the second lower shell are mutually buckled, so that three mounting grooves 14 are uniformly distributed along the circumferential direction of the first shell 11.

As shown in fig. 7 and 8, as an embodiment, the first housing 11 is provided with a limiting groove 12, the second supporting member 222 is embedded in the limiting groove 12, and the first driving member 211 is adapted to drive the second driving member 221 to rotate, so that the second supporting member 222 and the second driving member 221 rotate synchronously.

In the implementation process of the above scheme, the first housing 11 is further provided with a limiting groove 12, the second supporting member 222 is embedded in the limiting groove 12, the second driving member 221 is tightly matched with the second supporting member 222, and when the first driving member 211 drives the second driving member 221 to rotate, the second supporting member 222 provides a stable supporting effect for the second driving member 221, so as to ensure that the second driving member 221 and the first driving member 211 rotate synchronously.

Optionally, the second supporting member 222 has the same structure as the first supporting member 212, and is also a ball bearing, and includes an inner ring and an outer ring, where the outer ring of the second supporting member 222 is attached to the groove wall of the limiting groove 12, the inner ring is tightly connected to the second driving member 221, when the second driving member 221 rotates, the inner ring of the second supporting member 222 and the second driving member 221 synchronously rotate, the outer ring of the second supporting member 222 is relatively static, and the second supporting member 222 provides a supporting effect for the second driving member 221 on one hand, and ensures the stability of the second driving member 221 during rotation on the other hand.

Optionally, the first upper casing and the second lower casing are both provided with a limiting groove 12, and the positions of the two limiting grooves 12 are corresponding, so that the second supporting piece 222 is accommodated in the limiting groove 12 when the first upper casing and the second lower casing are buckled together.

As shown in fig. 5 to 8, as an embodiment, the opening position of the mounting groove 14 is further provided with an end cap 15 for resisting the first support 212, and the end cap 15 is detachably connected with the groove peripheral wall of the mounting groove 14.

In the process of realizing the scheme, the end cover 15 is further arranged at the opening position of the mounting groove 14, the end cover 15 is detachably connected with the groove peripheral wall of the mounting groove 14 so as to protect the first driving assembly 21, and meanwhile, the end cover 15 plays a limiting role on the first supporting piece 212 to prevent the first supporting piece 212 from falling from the mounting groove 14.

Optionally, a through hole corresponding to the recess 2112 is also formed in the center of the end cap 15, so that the insertion end of the power rod 4 can be inserted into the recess 2112.

The end cap 15 and the peripheral wall of the mounting groove 14 are fastened by a plurality of bolts, and may be fastened by a snap-fit method.

As shown in fig. 3 and 4, as an embodiment, a chamber 13 is provided in the first housing 11, the chamber 13 is communicated with the limit groove 12, and the chamber 13 extends along the axial direction of the first housing 11;

the transmission member 5 is mounted in the chamber 13, the delivery assembly further comprises a sheath tube 6, the proximal end of the sheath tube 6 and the distal end of the transmission rod 3 are respectively connected with the transmission member 5, and the transmission rod 3 is suitable for moving axially along the chamber 13, so that the transmission member 5 slides along the chamber 13 and drives the sheath tube 6 to move axially relative to the first shell 11.

In the implementation process of the above scheme, the first housing 11 is internally provided with the cavity 13, the cavity 13 is communicated with the limit groove 12, meanwhile, the cavity 13 is arranged in an extending manner along the axial direction of the first housing 11, the first housing 11 is internally provided with the transmission piece 5, the transmission piece 5 is installed in the cavity 13 and can axially move relative to the first housing 11 along the cavity 13, the conveying assembly further comprises the sheath tube 6, the sheath tube 6 is used for conveying the heart valve prosthesis, the proximal end of the sheath tube 6 and the distal end of the transmission rod 3 are connected through the transmission piece 5 and are respectively in threaded connection with the transmission piece 5, the transmission rod 3 is suitable for axially moving along the cavity 13, and simultaneously, the transmission piece 5 and the sheath tube 6 are driven to synchronously axially move relative to the first housing 11, and release or retraction of the heart valve prosthesis is realized when the sheath tube 6 axially moves relative to the first housing 11. Wherein suitable means that the transmission member 5 is not axially moved until it is required to axially move along the chamber 13.

Optionally, the transmission member 5 has a block structure and includes two opposite circular arc surfaces, the first upper casing and the second lower casing are respectively provided with a groove, when the first upper casing is buckled with the second lower casing, the two grooves form a cavity 13, and the groove walls of the two grooves of the first upper casing and the second lower casing are respectively matched with the two circular arc surfaces, so that the resistance generated when the transmission member 5 axially moves along the cavity 13 is reduced, and the transmission member 5 axially moves along the cavity 13 more easily; the transmission member 5 moves axially along the chamber 13 and simultaneously drives the sheath 6 to move axially, so that the heart valve prosthesis located in the sheath 6 is released.

As shown in fig. 5 and 7, as an embodiment, the proximal end of the sheath tube 6 is sleeved with a reinforcing tube 7, the reinforcing tube 7 is fixedly connected with the sheath tube 6, the sheath tube 6 is a flexible tube, and the sheath tube 6 is sleeved with the reinforcing tube 7 at the periphery of the sheath tube 6, so that a stable supporting effect can be provided for the sheath tube 6.

As an embodiment, the reinforcing tube 7 is provided with a plurality of holes 72, which facilitate gluing to achieve a fixed connection of the reinforcing tube 7 and the sheath tube 6.

As shown in fig. 3, 7 and 11, as an embodiment, a sliding block 31 is provided at the proximal end of the transmission rod 3, a sliding groove 16 is further provided in the first housing 11, the sliding block 31 is embedded in the sliding groove 16 and slidingly cooperates with the sliding groove 16, and a stop portion for stopping and limiting cooperation with the sliding block 31 is provided at the proximal end of the sliding groove 16.

In the implementation process of the scheme, the transmission rod 3 and the transmission piece 5 are coaxially arranged, the distal end of the transmission rod 3 is in threaded connection with the transmission piece 5, the first shell 11 is internally provided with the sliding groove 16, the sliding groove 16 is axially extended along the first shell 11, the sliding groove 16 is positioned beside the cavity 13, the sliding groove 16 is close to one end of an operator and is arranged at intervals with the cavity 13, the proximal end of the transmission rod 3 is provided with the sliding block 31, the sliding block 31 is embedded in the sliding groove 16 to provide stable support for the transmission rod 3, meanwhile, the sliding block 31 can slide in the sliding groove 16, and when the transmission rod 3 is driven, the transmission rod 3 is axially moved along the cavity 13 and simultaneously drives the transmission piece 5 to axially move along the cavity 13; in addition, a stopper is further provided at the proximal end of the sliding groove 16, and when the sliding block 31 moves axially along the distal end of the sliding groove 16 toward the proximal end of the sliding groove 16, the stopper can stop the sliding block 31, thereby restricting the movement of the sliding block 31 and preventing the sliding block 31 from falling out of the sliding groove 16.

Optionally, the stop is a slot wall distal of the sliding slot 16.

As shown in fig. 3 and 5, as an embodiment, the first housing 11 is provided with a channel 17, the distal end of the reinforcing tube 7 is provided with a conical head 71, and when the transmission member 5 moves axially along the first housing 11, the reinforcing tube 7 passes through the channel 17 more easily by the conical head 71 at the distal end of the reinforcing tube 7, so that the operability of the conveying device is improved; at the same time, the channel 17 is in communication with the chamber 13, and the channel 17 is provided in the first housing 11, so that the sheath 6 can pass through the channel 17 and be fixedly connected with the transmission member 5 in the chamber 13.

As one embodiment, the delivery device further comprises an outer sleeve 9, the sheath tube 6 and the inner tube 8 are connected with the handle 1, the outer sleeve 9 is sleeved on the periphery of the sheath tube 6, the sheath tube 6 is sleeved on the periphery of the inner tube 8, the inner tube 8 extends in the sheath tube 6, the sheath tube 6 and the inner tube 8 extend in the outer sleeve 9 and can synchronously rotate circumferentially relative to the outer sleeve 9, and when the sheath tube 6 and the inner tube 8 synchronously rotate circumferentially relative to the outer sleeve 9, the sheath tube 6 and the inner tube 8 clamp the heart valve prosthesis and synchronously rotate circumferentially relative to the outer sleeve 9 so as to realize circumferential positioning of the heart valve prosthesis; after circumferential positioning of the heart valve prosthesis, the heart valve prosthesis is released to improve the accuracy of the delivery device to the implantation site of the heart valve prosthesis.

Alternatively, the proximal ends of the sheath tube 6 and the inner tube 8 are connected to the handle 1, wherein one end of the extension tube section is connected to the handle 1, and the other end of the extension tube section extends convexly towards the distal end of the outer sleeve 9 and is connected to the receiving tube section, which is located at the distal end of the outer sleeve 9.

As shown in fig. 9, as an embodiment, the delivery device further comprises a second housing 20, the first housing 11 being rotatable circumferentially with respect to the second housing 20, the first housing 11 being rotatable with respect to the second housing 20 when circumferential positioning of the heart valve prosthesis is required, the first housing 11 being stationary synchronously with respect to the second housing 20 when releasing or retrieving the heart valve prosthesis; the second casing 20 is provided with a fixing member 10 therein, and the proximal end of the outer sleeve 9 is fixedly connected with the fixing member 10, thereby improving the stability of the outer sleeve 9. Meanwhile, the outer sleeve 9 is sleeved on the periphery of the sheath tube 6, and when the sheath tube 6 and the outer sleeve 9 are both positioned in the human body, the outer sleeve 9 provides stable supporting function for the sheath tube 6; the proximal end of the sheath tube 6 is connected with the transmission member 5, the inner tube 8 is fixedly connected with the proximal end of the first shell 11, the cavity 13 extends along the axial direction of the first shell 11, the transmission member 5 is embedded in the cavity 13, when the first shell 11 rotates relative to the sheath tube 6, the transmission member 5 and the first shell 11 synchronously rotate relative to the second shell 20, meanwhile, because the proximal end of the sheath tube 6 is fixedly connected with the transmission member 5, the outer sleeve 9 is fixedly connected with the fixing member 10, when the transmission member 5 rotates relative to the second shell 20, the sheath tube 6 also rotates relative to the second shell 20 and also circumferentially rotates relative to the outer sleeve 9; in addition, the proximal end of the inner tube 8 is fixedly connected with the proximal end of the first housing 11, so that when the inner tube 8 rotates relative to the sheath tube 6, the inner tube 8 also rotates relative to the second housing 20 and also rotates circumferentially relative to the outer sleeve 9, and finally, when the first housing 11 rotates relative to the second housing 20, the sheath tube 6 and the inner tube 8 synchronously rotate circumferentially relative to the outer sleeve 9, and when the heart valve prosthesis rotates to a position where implantation is needed, the heart valve prosthesis is released, so that the accuracy of the implantation position of the heart valve prosthesis is improved.

As shown in fig. 9, optionally, a mounting cavity 201 is provided in the second housing 20, the fixing element 10 includes a fixing column and a fixing portion connected to the fixing column, the fixing column is embedded in the mounting cavity 201, so as to realize preliminary fixing of the fixing element 10 and the second housing 20, at least one fixing hole is provided on the fixing portion, at least one fixing matching hole corresponding to the fixing hole is provided on the second housing 20, and a fastener passes through the fixing matching hole and the fixing hole, so as to fixedly connect the fixing element 10 and the second housing 20; meanwhile, the proximal end of the outer sleeve 9 is in threaded connection with the fixed column, so that the outer sleeve 9 is fixedly connected with the fixed column.

Optionally, the fixing element 10 is provided with a hollow channel in the axial direction, and the sheath tube 6 and the inner tube 8 pass through the hollow channel and are respectively connected with the proximal ends of the transmission element 5 and the first housing 11, when the first housing 11 rotates circumferentially relative to the second housing 20, the sheath tube 6 and the inner tube 8 can synchronously rotate circumferentially relative to the second housing 20, so that circumferential positioning of the heart valve prosthesis by the delivery device is further realized.

As shown in fig. 7 and 9, in a second aspect, the present embodiment further provides a handle 1 of an interventional heart valve prosthesis delivery device, including a first housing 11, at least two mounting slots 14 are provided in a circumferential direction of the first housing 11, the mounting slots 14 are used for accommodating a first driving component 21, so that the first driving component 21 can rotate in the mounting slots 14, and a slot peripheral wall of the mounting slots 14 plays a role in stably supporting the first driving component 21, so that a medical staff can conveniently drive the first driving component 21 to rotate through a plurality of angles, and operability of the handle 1 is improved.

Optionally, two mounting grooves 14 are uniformly distributed in the circumferential direction of the first housing 11, so that after the handle 1 rotates, a medical staff can conveniently select one of the suitable angles to operate the first driving assembly 21, and the convenience of the operation of the medical staff is improved.

As shown in fig. 6, as an embodiment, the distal end of the first housing 11 is further provided with a socket post 18, the end of the socket post 18 is provided with a plurality of teeth, and a tooth slot is formed between two adjacent teeth.

In the implementation process of the above scheme, the distal end of the first housing 11 is further provided with the insertion post 18, the handle 1 further comprises the second housing 20, the proximal end of the second housing 20 is provided with the insertion groove corresponding to the insertion post 18, the insertion post 18 is inserted into the second housing 20 to realize connection between the insertion post 18 and the second housing 20, meanwhile, the second housing 20 is in a columnar structure, the insertion post 18 is inserted into the insertion groove, the first housing 11 can rotate circumferentially relative to the second housing 20, the sheath tube 6 rotates circumferentially relative to the second housing 20 synchronously, and the sheath tube 6 and the inner tube 8 clamp the heart valve prosthesis, so that circumferential positioning of the heart valve prosthesis is realized.

In addition, the end of the inserting groove 18 is provided with a plurality of teeth, a tooth slot is formed between two adjacent teeth, a locking piece 100 is arranged in the second housing 20, and the locking piece 100 can be inserted into the tooth slot and used for locking or unlocking the relative position between the first housing 11 and the second housing 20, so that the circumferential rotation angle of the first housing 11 relative to the second housing is determined, and the handle 1 is convenient for circumferentially positioning the heart valve.

As shown in fig. 9, a limiting space 202 is further provided in the second housing 20, the limiting space 202 extends along the axial direction of the second housing 20, one side of the limiting space 202 is spaced apart from the mounting cavity 201 by a partition board, the other side is communicated with the accommodating groove 203, and a part of the locking member 100 is located in the limiting space 202 and can move axially relative to the limiting space 202, so that the locking or unlocking of the tooth slot is further realized, and when the first housing 11 rotates to a proper release circumferential angle of the heart valve prosthesis relative to the second housing 20, the tooth slot is locked by the locking member 100, so that the first housing 11 is prevented from continuing to rotate, and the purpose of accurately implanting the heart valve prosthesis is achieved.

Optionally, the proximal end of the second housing 20 is further provided with a receiving groove 203 for receiving a plurality of teeth, the receiving groove 203 being in communication with the socket, the plurality of teeth at the end of the socket also rotating within the receiving groove 203 when the first housing 11 rotates relative to the second housing 20.

As shown in fig. 7, as one embodiment, the first housing 11 is provided with three mounting grooves 14 in the circumferential direction.

In the process of realizing the scheme, the three mounting grooves 14 are uniformly distributed in the circumferential direction of the first shell 11, the axes of the two adjacent mounting grooves 14 are arranged at 120 degrees, and because the angle of the handle 1 rotating in the circumferential direction is unknown, the three first driving assemblies 21 are arranged in the circumferential direction of the first shell 11, the operation of any one of the first driving assemblies 21 by medical staff can be facilitated, and accordingly the release or retraction of the heart valve prosthesis is realized, and the convenience of the medical staff in operation of the conveying device is improved.

As shown in fig. 7, as an embodiment, the first housing 11 includes a first upper housing and a second lower housing, which are fastened to each other, so that installation and maintenance of other parts in the first housing 11 are facilitated.

As shown in fig. 6, alternatively, the length of the first upper housing is greater than that of the second lower housing, the proximal end of the first upper housing is provided with a protruding section 19, and when the first upper housing and the second lower housing are engaged with each other, the protruding section 19 is connected to the proximal end of the second lower housing, and the protruding section 19 is used to connect the recovery line assembly on the handle.

Optionally, the second housing 20 is also provided with a snap fit arrangement, which facilitates the installation and maintenance of other components within the second housing 20.

The foregoing is merely exemplary embodiments of the present application and is not intended to limit the scope of the present application, and various modifications and variations may be suggested to one skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by 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 the element.

Claims

1. An interventional heart valve prosthesis delivery device, comprising:

a handle;

a delivery assembly extending within the handle and axially movable relative to the handle; the conveying assembly comprises a transmission rod;

the first driving assemblies are distributed along the circumferential direction of the transmission rod, are in transmission connection with the transmission rod and are used for driving the transmission rod to axially move relative to the handle.

2. The interventional heart valve prosthesis delivery device of claim 1, comprising a second drive assembly disposed on the drive rod, the first drive assembly in driving connection with the second drive assembly, the first drive assembly adapted to drive the second drive assembly to rotate to axially move the drive rod relative to the handle.

3. The interventional heart valve prosthesis delivery device of claim 2, wherein the first drive assembly comprises a first drive member and a first support member sleeved on the periphery of the first drive member, the first support member is in tight fit connection with the first drive member, and a first drive portion is arranged at the end of the first drive member;

the second driving assembly comprises a second driving piece and a second supporting piece sleeved on the periphery of the second driving piece, the second supporting piece is in tight fit connection with the second driving piece, a second driving part is arranged at the end part of the second driving piece and meshed with the first driving part, the transmission rod penetrates through the second driving piece and is in threaded transmission connection with the second driving piece, and the first driving piece is suitable for driving the second driving piece to rotate so that the transmission rod axially moves relative to the handle.

4. The interventional heart valve prosthesis delivery device of claim 3, wherein the first drive portion comprises a plurality of first drive teeth, the second drive portion comprises a plurality of second drive teeth, a drive socket is formed between two adjacent second drive teeth, and the plurality of first drive teeth are engaged with the plurality of drive sockets.

5. The interventional heart valve prosthesis delivery device of claim 3 or 4, comprising a power rod, wherein the first driver is provided with a recess formed by an end of the first driver being recessed toward the first driver, and wherein an end of the power rod is insertable into the recess to drive the first driver to rotate.

6. The interventional heart valve prosthesis delivery device of claim 5, wherein the handle comprises a first housing having a mounting slot corresponding to the first drive assembly, an annular boss is disposed within the mounting slot, and the first support is disposed within the mounting slot and abuts the annular boss.

7. The interventional heart valve prosthesis delivery device of claim 6, wherein the first housing has a limiting groove therein, the second support being embedded in the limiting groove.

8. The interventional heart valve prosthesis delivery device of claim 7, wherein the mounting slot is further provided with an end cap at an open position to abut the first support, the end cap being removably connected to the slot peripheral wall of the mounting slot.

9. The interventional heart valve prosthesis delivery device of claim 7, wherein a chamber is provided within the first housing, the chamber in communication with the limiting groove, the chamber extending axially of the first housing;

the transmission member is arranged in the cavity, the conveying assembly further comprises a sheath tube, the proximal end of the sheath tube and the distal end of the transmission rod are respectively connected with the transmission member, and the transmission rod is suitable for moving along the axial direction of the cavity, so that the transmission member slides along the cavity and drives the sheath tube to move relative to the first shell in the axial direction.

10. The interventional heart valve prosthesis delivery device of claim 9, wherein the sheath tube is sleeved with a stiffening tube at a proximal end thereof, the stiffening tube is fixedly connected to the sheath tube, the stiffening tube is fixedly connected at a proximal end thereof to the driving member, and

the reinforcing pipe is provided with a plurality of holes for gluing.

11. The interventional heart valve prosthesis delivery device of claim 9, wherein the proximal end of the drive rod is provided with a sliding block, a sliding groove is further provided in the first housing, the sliding block is embedded in the sliding groove and is in sliding fit with the sliding groove, and a stop portion for stopping and limiting the sliding block is provided at the proximal end of the sliding groove.

12. The interventional heart valve prosthesis delivery device of claim 8, wherein a passageway is provided in the distal end of the first housing, the distal end of the stiffening tube being provided with a conical head for passing through the passageway;

the channel is communicated with the cavity, and the sheath tube passes through the channel and is connected with the transmission piece in the cavity.

13. The handle of the interventional heart valve prosthesis delivery device is characterized by comprising a first shell, wherein at least two mounting grooves for accommodating a first driving assembly are formed in the circumference of the first shell.

14. The handle of claim 13, wherein a distal end of the first housing is provided with a peg, and wherein a distal end of the peg is provided with a plurality of teeth;

15. The handle of claim 14, wherein the first housing comprises a first upper housing and a second lower housing, the first upper housing and the second lower housing being snap-fit to one another;

16. The handle of claim 15, wherein the first housing is circumferentially provided with three of the mounting slots.