Interventional heart valve prosthesis delivery device and its handle

Abstract

The present application relates to the technical field of medical devices, and provides an interventional heart valve prosthesis delivery device and a handle thereof, wherein the interventional heart valve prosthesis delivery device comprises: a handle; a delivery assembly extending in the handle and axially movable relative to the handle; the delivery assembly comprises a transmission rod; and at least two first drive assemblies, wherein the first drive assemblies are arranged along the circumference of the transmission rod, the first drive assemblies are connected to the transmission rod, and are used to drive the transmission rod to move axially relative to the handle. Through the technical solution of the present application, an interventional heart valve prosthesis delivery device and a handle thereof can be provided that improves the convenience of operation for medical staff.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular, to an interventional heart valve prosthesis delivery device and a handle thereof. Background Art

[0002] Heart valvular disease is one of the most common heart diseases in my country, the main type of which is valvular damage caused by rheumatic fever. In recent years, with the aging of the population, valvular degeneration (including calcification and myxoid degeneration, etc.) and valvular damage caused by metabolic disorders have also become increasingly common in my country. Currently, the implantation of heart valve prostheses through minimally invasive internal medicine surgery provides medical staff with a new treatment method with less trauma, fewer complications and faster postoperative recovery.

[0003] During valve treatment, a delivery device is needed to deliver the heart valve prosthesis, control its shape and release it. However, during operation of the existing delivery device, medical staff sometimes need to turn the operating handle to implant the valve prosthesis. However, after the operating handle is turned, the operating direction of the medical staff is also adjusted accordingly, which causes inconvenience in operation. Summary of the invention

[0004] The technical problem to be solved by the present application is to provide an interventional heart valve prosthesis delivery device and a handle thereof that improves the operational convenience.

[0005] In order to solve the above technical problems, this application adopts the following technical solutions:

[0006] 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 movable axially relative to the handle; the delivery assembly comprising a transmission rod; and at least two first drive assemblies, the first drive assemblies being arranged circumferentially along the transmission rod, the first drive assemblies being transmission-connected to the transmission rod and used to drive the transmission rod to move axially relative to the handle.

[0007] As an embodiment, it includes a second drive assembly, which is arranged on the transmission rod, the first drive assembly is transmission-connected to the second drive assembly, and the first drive assembly is suitable for driving the second drive assembly to rotate so that the transmission rod moves axially relative to the handle.

[0008] As an embodiment, the first driving assembly includes a first driving member and a first supporting member sleeved on the outer periphery of the first driving member, the first supporting member is tightly fitted with the first driving member, and a first driving portion is provided at the end of the first driving member; the second driving assembly includes a second driving member and a second supporting member sleeved on the outer periphery of the second driving member, the second supporting member is tightly fitted with the second driving member, a second driving portion is provided at the end of the second driving member, the second driving portion is meshed with the first driving portion, the transmission rod passes through the second driving member and is threadedly connected to the second driving member, and the first driving member is suitable for driving the second driving member to rotate so that the transmission rod moves axially relative to the handle.

[0009] As an 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 groove is formed between two adjacent second driving teeth, and the plurality of first driving teeth are meshed with the plurality of driving tooth grooves.

[0010] As an embodiment, it includes a power rod, and the first driving member is provided with a recessed portion, which is formed by one end of the first driving member being recessed toward the first driving member, and one end of the power rod can be inserted into the recessed portion to drive the first driving member to rotate.

[0011] As an embodiment, the handle includes a first shell, the first shell is provided with a mounting groove corresponding to the first driving assembly, an annular boss is provided in the mounting groove, and the first support member is located in the mounting groove and abuts against the annular boss.

[0012] As an implementation manner, a limiting groove is provided in the first shell, and the second support member is embedded in the limiting groove.

[0013] As an embodiment, an end cover for resisting the first support member is further provided at the opening position of the installation groove, and the end cover is detachably connected to the groove peripheral wall of the installation groove.

[0014] As an embodiment, a chamber is provided in the first shell, the chamber is communicated with the limiting groove, and the chamber extends along the axial direction of the first shell;

[0015] A transmission member is installed in the chamber, and the conveying assembly also includes a sheath tube. The proximal end of the sheath tube and the distal end of the transmission rod are respectively connected to the transmission member, and the transmission rod is suitable for axial movement along the chamber so that the transmission member slides along the chamber and drives the sheath tube to move axially relative to the first shell.

[0016] As an implementation mode, a reinforcing tube is sleeved on the proximal end of the sheath tube, the reinforcing tube is fixedly connected to the sheath tube, the proximal end of the reinforcing tube is fixedly connected to the transmission member, and the reinforcing tube is provided with a plurality of holes for applying glue.

[0017] As an embodiment, a sliding block is provided at the proximal end of the transmission rod, and a sliding groove is also provided in the first shell. The sliding block is embedded in the sliding groove and slidably cooperates with the sliding groove. A stop portion is provided at the proximal end of the sliding groove for stopping and limiting the sliding block.

[0018] As an embodiment, a channel is provided in the distal end of the first shell, and a conical head is provided at the distal end of the reinforcement tube for passing through the channel; the channel is connected to the chamber, the sheath tube passes through the channel and is connected to the transmission member in the chamber.

[0019] In a second aspect, the present application provides a handle of an interventional heart valve prosthesis delivery device, comprising a first shell, wherein the first shell is circumferentially provided with at least two mounting grooves for accommodating a first drive assembly.

[0020] As an embodiment, a plug-in column is provided at the distal end of the first housing, and a plurality of teeth are provided at the distal end of the plug-in column;

[0021] The handle includes a second shell, a proximal end of which is provided with an insertion slot, and the insertion column is inserted into the insertion slot; the proximal end of the second shell is provided with a receiving slot for accommodating a plurality of the teeth, the receiving slot is connected to the insertion slot, and the receiving slot can accommodate the rotation of the plurality of teeth.

[0022] As an embodiment, the first housing includes a first upper housing and a second lower housing, and the first upper housing and the second lower housing are buckled with each other;

[0023] The second shell includes a second upper shell and a second lower shell, and the second upper shell and the second lower shell are buckled with each other.

[0024] As an implementation manner, three installation grooves are arranged in the circumference of the first shell.

[0025] The technical solution of this application has the following effects:

[0026] 1. A conveying assembly is provided in the handle of the conveying device, and the conveying assembly includes a transmission rod. The conveying device also includes at least two first drive assemblies, which are arranged along the circumference of the transmission rod and are connected to the transmission rod in a transmission manner. By arranging at least two first drive assemblies along the circumference of the transmission rod, when the handle rotates, medical staff can operate the first drive assembly at multiple angles to drive the transmission rod to move axially relative to the handle to implant the valve prosthesis into the body, thereby improving the convenience of operating the conveying device.

[0027] 2. A plurality of mounting grooves are evenly distributed around the circumference of the first shell, and the mounting grooves correspond to the first drive assembly to facilitate medical personnel to drive the transmission rod to move axially relative to the first shell through the first drive assembly on the handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A schematic diagram of a partial structure of a heart valve prosthesis delivery device provided in an embodiment of the present application;

[0030] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure along the AA direction;

[0031] Figure 3 A schematic diagram of a partial cross-sectional structure of a heart valve prosthesis delivery device provided in an embodiment of the present application;

[0032] Figure 4 for Figure 3 The enlarged structural diagram of the middle A part;

[0033] Figure 5 A schematic structural diagram of a partial perspective of a heart valve prosthesis delivery device provided in an embodiment of the present application;

[0034] Figure 6 A schematic structural diagram of a heart valve prosthesis delivery device from another perspective provided in an embodiment of the present application;

[0035] Figure 7 A schematic diagram of a partial explosion structure of a heart valve prosthesis delivery device provided in an embodiment of the present application;

[0036] Figure 8 for Figure 7 The enlarged structural diagram of the middle A part;

[0037] Fig. 9 A schematic diagram of the exploded structure of a heart valve prosthesis delivery device provided in an embodiment of the present application;

[0038] Fig.10 A schematic diagram of the structure of a heart valve prosthesis delivery device provided in an embodiment of the present application;

[0039] Fig.11 for Fig.10 Schematic diagram of the cross-sectional structure along the AA direction;

[0040] Fig.12 for Fig.11 Schematic diagram of the enlarged structure of part A in the middle.

[0041] Icons: 1-handle; 11-first shell; 12-limiting groove; 13-chamber; 14-mounting groove; 141-annular boss; 15-end cover; 16-sliding groove; 17-channel; 18-plug-in column; 19-protruding section; 20-second shell; 201-mounting cavity; 202-limiting space; 203-accommodating groove; 21-first drive assembly; 211-first drive member; 2111-first drive part; 2112-recessed part; 212-first support member; 22-second drive assembly; 221-second drive member; 2211-second drive part; 222-second support member; 3-transmission rod; 31-sliding block; 4-power rod; 5-transmission member; 6-sheath; 7-reinforcement tube; 71-conical head; 72-hole; 8-inner tube; 9-outer tube; 10-fixing member; 100-locking member. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0043] It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in the subsequent figures. At the same time, in the description of this application, the term "distal end" refers to the end of the components in the valve delivery handle close to the heart tissue, and the "proximal end" refers to the end of the valve delivery handle close to the operator. The terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0044] First, as Fig.10 and 12As shown, the present application introduces an interventional heart valve prosthesis delivery device, which includes a handle 1, in which a sheath 6 and an inner tube 8 extend, the inner tube 8 extends inside the sheath 6, and a guide head is connected to the distal end of the inner tube 8, and an accommodating space for accommodating a heart valve prosthesis is provided between the sheath 6 and the inner tube 8, and the sheath 6 can move axially relative to the inner tube 8 to release or retract the heart valve prosthesis.

[0045] The sheath tube 6 includes a receiving tube section and an extending tube section. The radial dimension of the receiving tube section is larger than that of the extending tube section. The receiving tube section is located at the distal end of the sheath tube and is used to accommodate a heart valve prosthesis.

[0046] Optionally, the guide head is a conical structure, and the end of the guide head has a streamlined shape, which can avoid scratching the inner wall of the blood vessel and is also conducive to guiding the entire delivery device along the blood vessel. The tail of the guide head is a flat structure for pressing against the heart valve prosthesis.

[0047] like Figure 1 and 5 As shown, an embodiment of the present application provides an interventional heart valve prosthesis delivery device, which also includes a delivery component extending in the handle 1 and can move axially relative to the handle 1, and the delivery component is used to deliver the heart valve prosthesis, wherein the delivery component includes a transmission rod 3, and the transmission rod 3 can move axially relative to the handle 1; the delivery device also includes at least two first drive components 21, and the first drive components 21 are arranged along the circumference of the transmission rod 3. The first drive components 21 are connected to the transmission rod 3 to drive the transmission rod 3 to move axially relative to the handle 1. By arranging at least two first drive components 21 circumferentially on the transmission rod 3, after the handle 1 is rotated, the medical staff can select one of the first drive components 21 according to the operating position suitable for themselves to drive the transmission rod 3 to move axially relative to the handle 1, thereby facilitating the operation of the medical staff.

[0048] Optionally, each first drive assembly 21 can drive the transmission rod 3 to move axially relative to the handle 1, the inner tube 8 is connected to the handle 1 by gluing or other means, and the transmission rod 3 is connected to the sheath tube 6. 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 the release or retraction of the heart valve prosthesis.

[0049] Optionally, the two first drive assemblies 21 are evenly distributed along the circumference of the transmission rod 3, so that after the handle 1 is rotated, it is convenient for medical staff to select one of the first drive assemblies 21 suitable for their operation, thereby improving the convenience of operation for medical staff.

[0050] like Figure 5As shown, as a preferred embodiment, three first drive components 21 are evenly distributed on the circumference of the transmission rod 3, and the axes of two adjacent first drive components 21 are set at 120 degrees. Since the circumferential rotation angle of the handle 1 is unknown, three first drive components 21 are set on the circumference of the transmission rod 3, which can facilitate medical staff to operate any first drive component 21 to drive the transmission rod 3 to move axially relative to the handle 1, thereby releasing or retracting the heart valve prosthesis, thereby improving the convenience of medical staff in operating the delivery device.

[0051] like Figure 2 , 3 , 7 and 8, as an embodiment, the conveying device also includes a second drive component 22, the second drive component 22 is arranged on the transmission rod 3, the first drive component 21 is transmission-connected with the second drive component 22, the first drive component 21 is suitable for driving the second drive component 22 to rotate, so that the transmission rod 3 moves axially relative to the handle 1, wherein suitable means that the first drive component 21 drives the second drive component 22 to rotate when the transmission rod 3 needs to move axially relative to the handle 1.

[0052] Optionally, the three first drive assemblies 21 are all connected to the second drive assembly 22 in transmission connection, and each first drive assembly 21 can drive the second drive assembly 22 to rotate relative to the transmission rod 3. In addition, when the first drive assembly 21 drives the second drive assembly 22 to rotate, the first drive assembly 21 also rotates, and the three first drive assemblies 21 rotate synchronously.

[0053] like Figure 2 and 5 As shown, 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, the first supporting member 212 is tightly fitted with the first driving member 211, so that the first supporting member 212 has a clamping force on the first driving member 211 to ensure the stability of the structure, and the first driving member 211 is provided with a first driving portion 2111 at one end facing the transmission rod 3; the second driving assembly 22 includes a second driving member 221 and a second supporting member 222 sleeved on the outer periphery of the second driving member 221, the second supporting member 222 is tightly fitted with the second driving member 221 A second driving portion 2211 is provided at the distal end of the second driving member 221, the first driving portion 2111 is meshed with the second driving portion 2211, the second driving member 221 is sleeved on the outer periphery of the transmission rod 3, and is threadedly connected to the transmission rod 3, the first driving member 211 is suitable for driving the second driving member 221 to rotate, so that the second driving member 221 is transmitted relative to the transmission rod 3, and at the same time, the transmission rod 3 is axially moved relative to the handle 1, wherein suitable means that when the transmission rod 3 needs to move axially relative to the handle 1, the first driving member 211 drives the second driving member 221 to rotate, so that the transmission rod 3 is axially moved relative to the handle 1.

[0054] like Figure 5 and 7 As shown, as an embodiment, the first driving portion 2111 includes a plurality of first driving teeth, and the second driving portion 2211 includes a plurality of second driving teeth, and a driving tooth groove is formed between two adjacent second driving teeth. The plurality of first driving teeth are correspondingly meshed with the plurality of driving tooth grooves, so that when the first driving member 211 rotates, the second driving member 221 is synchronously driven to rotate.

[0055] Optionally, the ends of the three first driving members 211 are each provided with a first driving portion 2111, and the three first driving portions 2111 are all meshed with the second driving portion 2211. At the same time, the axes of the three first driving members 211 are all perpendicular to the axis of the second driving member 221, thereby ensuring the meshing angle between the first driving portion 2111 and the second driving portion 2211, so that when the first driving member 211 rotates around its own axis, it can more smoothly drive the second driving member 221 to rotate relative to the transmission rod 3.

[0056] like Figure 6 and 8 As shown, as an embodiment, it includes a power rod 4, and the first driving member 211 is provided with a recessed portion 2112. The recessed portion 2112 is formed by one end of the first driving member 211 being recessed toward the first driving member 2111, and one end of the power rod 4 can be inserted into the recessed portion 2112 to drive the first driving member 211 to rotate.

[0057] In the process of implementing the above-mentioned scheme, the conveying device also includes a power rod 4, and the first driving member 211 is provided with a recessed portion 2112. The recessed portion 2112 is formed by the end of the first driving member 211 that is away from the first driving member 2111 and is recessed toward the first driving member 2111. One end of the power rod 4 is adapted to the recessed portion 2112, and the power rod 4 includes an insertion end, which can be inserted into the recessed portion 2112. When the power rod 4 is inserted into the recessed portion 2112, it can drive the first driving member 211 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 recessed portion 2112, the first driving member 211 stops rotating.

[0058] like Figure 8 As shown, optionally, the three first driving members 211 are all provided with a recessed portion 2112, the recessed portion 2112 is a columnar chamber 13, any cross-section of the recessed portion 2112 along its axial direction is a non-circular special shape, and one end of the power rod 4 inserted into the recessed portion 2112 is adapted to the structure of the recessed portion 2112, so that the inserted end of the power rod 4 is clamped with the recessed portion 2112.

[0059] like Figure 1 and 5As shown, as an embodiment, the handle 1 includes a first shell 11, and the first shell 11 is provided with a mounting groove 14 corresponding to the first drive component 21, and the mounting groove 14 is used to accommodate the first drive component 21 so that the first drive component 21 can rotate in the mounting groove 14, and the groove wall of the mounting groove 14 plays a role of stabilizing support for the first drive component 21.

[0060] Among them, an annular boss 141 is also provided in the mounting groove 14, the first support member 212 is located in the mounting groove 14 and abuts against the annular boss 141, the first driving member 211 and the first support member 212 are tightly fitted and connected, 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 rotate synchronously.

[0061] Optionally, the number of mounting grooves 14 corresponds to the number of first drive assemblies 21, and multiple mounting grooves 14 are evenly distributed along the circumference of the first shell 11, so that medical staff can drive the first drive assembly 21 to rotate at multiple angles to make the sheath 6 move axially relative to the first shell 11, thereby improving the convenience of operation for medical staff.

[0062] Optionally, the first support member 212 is a ball bearing, which includes an inner ring and an outer ring, and the inner ring and the outer ring are connected by a plurality of ball transmissions, and the diameter of the inner ring is equal to the radial dimension of the end of the first driving member 211 away from the first driving portion 2111, so that the first support member 212 can be sleeved on the outer periphery of the first driving member 211 to achieve a tight fit connection, and the outer ring is in contact with the annular boss 141 and embedded in the mounting groove 14 to ensure the stability of the first support member 212. When the first driving member 211 rotates, the inner ring of the first support member 212 rotates synchronously with the first driving member 211, and the outer ring of the first support member 212 is relatively stationary. The first support member 212 provides support for the first driving member 211 on the one hand, and ensures the stability of the first driving member 211 when rotating on the other hand.

[0063] Optionally, the first housing 11 is formed by buckling a first upper housing and a second lower housing, which facilitates installation and maintenance of other parts in the first housing 11. A mounting groove 14 is provided on the first upper housing, and a portion of two other mounting grooves 14 is also provided, while the remaining portions of the other two mounting grooves 14 are provided on the second lower housing. The first upper housing and the second lower housing are buckled together, thereby forming three mounting grooves 14 evenly distributed along the circumference of the first housing 11.

[0064] like Figure 7 and 8As shown, as an embodiment, a limiting groove 12 is provided in the first shell 11, and the second support member 222 is embedded in the limiting groove 12. The first driving member 211 is suitable for driving the second driving member 221 to rotate, so that the second supporting member 222 and the second driving member 221 rotate synchronously.

[0065] In the process of implementing the above-mentioned scheme, a limiting groove 12 is also provided in the first shell body 11, and the second support member 222 is embedded in the limiting groove 12. The second driving member 221 is tightly fitted with the second support member 222. When the first driving member 211 drives the second driving member 221 to rotate, the second support member 222 provides a stable support for the second driving member 221 to ensure that the second driving member 221 rotates synchronously with the first driving member 211.

[0066] Optionally, the second support member 222 has the same structure as the first support member 212 and is also a ball bearing, including an inner ring and an outer ring, wherein the outer ring of the second support member 222 fits against the groove wall of the limiting groove 12, and the inner ring is tightly connected with the second driving member 221. When the second driving member 221 rotates, the inner ring of the second support member 222 rotates synchronously with the second driving member 221, and the outer ring of the second support member 222 is relatively stationary. On the one hand, the second support member 222 provides support for the second driving member 221, and on the other hand, ensures the stability of the second driving member 221 during rotation.

[0067] Optionally, both the first upper shell and the second lower shell are provided with a limiting groove 12 , and the positions of the two limiting grooves 12 correspond to each other. When the first upper shell and the second lower shell are buckled together, the second support member 222 is accommodated in the limiting groove 12 .

[0068] like Figures 5 to 8 As shown, as an embodiment, an end cover 15 for resisting the first support member 212 is further provided at the opening position of the installation groove 14 , and the end cover 15 is detachably connected to the groove peripheral wall of the installation groove 14 .

[0069] In the process of implementing the above-mentioned scheme, an end cover 15 is also provided at the opening position of the mounting groove 14. The end cover 15 is detachably connected to the groove wall of the mounting groove 14 to protect the first drive component 21. At the same time, the end cover 15 limits the first support member 212 to prevent the first support member 212 from falling out of the mounting groove 14.

[0070] Optionally, a through hole corresponding to the recessed portion 2112 is also opened in the center of the end cover 15 so that the insertion end of the power rod 4 can be inserted into the recessed portion 2112 .

[0071] The end cover 15 is fastened to the peripheral wall of the installation groove 14 by a plurality of bolts, and can also be fastened by means of a clamping connection or the like.

[0072] like Figure 3 and 4 As shown, as an embodiment, a chamber 13 is provided in the first shell 11, the chamber 13 is communicated with the limiting groove 12, and the chamber 13 extends along the axial direction of the first shell 11;

[0073] A transmission member 5 is installed in the chamber 13, and the conveying assembly also includes a sheath 6. The proximal end of the sheath 6 and the distal end of the transmission rod 3 are respectively connected to the transmission member 5. The transmission rod 3 is suitable for axial movement along the chamber 13 so that the transmission member 5 slides along the chamber 13 and drives the sheath 6 to move axially relative to the first shell 11.

[0074] In the process of implementing the above scheme, a chamber 13 is provided in the first shell 11, and the chamber 13 is connected with the limit groove 12. At the same time, the chamber 13 is extended along the axial direction of the first shell 11. A transmission member 5 is provided in the first shell 11, and the transmission member 5 is installed in the chamber 13, and can move axially relative to the first shell 11 along the chamber 13. The delivery assembly also includes a sheath 6, and the sheath 6 is used to deliver the heart valve prosthesis. The proximal end of the sheath 6 and the distal end of the transmission rod 3 are connected through the transmission member 5, and are respectively threadedly connected to the transmission member 5. The transmission rod 3 is suitable for axial movement along the chamber 13, and at the same time drives the transmission member 5 and the sheath 6 to synchronously move axially relative to the first shell 11. When the sheath 6 moves axially relative to the first shell 11, the heart valve prosthesis is released or retracted. Among them, suitable means that the transmission member 5 moves axially only when it needs to move axially along the chamber 13.

[0075] Optionally, the transmission member 5 is a block structure, including two opposite arc surfaces, and the first upper shell body and the second lower shell body are respectively provided with grooves. When the first upper shell body and the second lower shell body are buckled together, the two grooves form a chamber 13, and the groove walls of the two grooves of the first upper shell body and the second lower shell body are respectively adapted to the two arc surfaces, thereby reducing the resistance generated by the transmission member 5 when it moves axially along the chamber 13, making it easier for the transmission member 5 to move axially along the chamber 13; when the transmission member 5 moves axially along the chamber 13, it also drives the sheath 6 to move axially, so that the heart valve prosthesis located in the sheath 6 is released.

[0076] like Figure 5 and 7 As shown, as an embodiment, the proximal end of the sheath tube 6 is provided with a reinforcing tube 7, and the reinforcing tube 7 is fixedly connected to the sheath tube 6. The sheath tube 6 is a flexible tube. By providing the reinforcing tube 7 on the outer periphery of the sheath tube 6, a stable support effect can be provided to the sheath tube 6.

[0077] As an implementation mode, a plurality of holes 72 are provided on the reinforcing tube 7 to facilitate glue coating, so as to achieve a fixed connection between the reinforcing tube 7 and the sheath tube 6 .

[0078] like Figure 3 , 7As shown in 11, as an embodiment, a sliding block 31 is provided at the proximal end of the transmission rod 3, and a sliding groove 16 is also provided in the first shell 11. The sliding block 31 is embedded in the sliding groove 16 and slidably cooperates with the sliding groove 16. A stop portion is provided at the proximal end of the sliding groove 16 for stopping and limiting the sliding block 31.

[0079] In the process of implementing the above scheme, the transmission rod 3 is coaxially arranged with the transmission member 5, and the distal end of the transmission rod 3 is threadedly connected with the transmission member 5. A sliding groove 16 is also provided in the first shell 11, and the sliding groove 16 is axially extended along the first shell 11. The sliding groove 16 is located on the side of the chamber 13, and the sliding groove 16 is the end close to the operator and is spaced apart from the chamber 13. A sliding block 31 is provided at the proximal end of the transmission rod 3, and the sliding block 31 is embedded in the sliding groove 16 to provide stable support for the transmission rod 3. At the same time, the sliding block 31 can slide in the sliding groove 16, and when the transmission rod 3 is driven, the transmission rod 3 moves axially along the chamber 13, and also drives the transmission member 5 to move axially along the chamber 13; in addition, a stopper is also 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, limit the movement of the sliding block 31, and prevent the sliding block 31 from falling off from the sliding groove 16.

[0080] Optionally, the stop portion is a groove wall at the distal end of the sliding groove 16 .

[0081] like Figure 3 and 5 As shown, as an embodiment, a channel 17 is provided in the first shell 11, and a conical head 71 is provided at the distal end of the reinforcing tube 7. When the transmission member 5 moves axially along the first shell 11, the conical head 71 at the distal end of the reinforcing tube 7 makes it easier for the reinforcing tube 7 to pass through the channel 17, thereby improving the operability of the conveying device. At the same time, the channel 17 is connected to the chamber 13, and the channel 17 is provided in the first shell 11, so that the sheath tube 6 can pass through the channel 17 and be fixedly connected to the transmission member 5 in the chamber 13.

[0082] As an embodiment, the delivery device also includes an outer sleeve 9, and the outer sleeve 9, the sheath tube 6 and the inner tube 8 are all connected to the handle 1. The outer sleeve 9 is sleeved on the outer circumference of the sheath tube 6, the sheath tube 6 is sleeved on the outer circumference of the inner tube 8, and the inner tube 8 extends in the sheath tube 6. The sheath tube 6 and the inner tube 8 both extend in the outer sleeve 9 and can rotate synchronously relative to the outer sleeve 9 in the circumferential direction. When the sheath tube 6 and the inner tube 8 rotate synchronously relative to the outer sleeve 9 in the circumferential direction, the sheath tube 6 and the inner tube 8 clamp the heart valve prosthesis and rotate synchronously relative to the outer sleeve 9 in the circumferential direction to achieve circumferential positioning of the heart valve prosthesis; after the heart valve prosthesis is circumferentially positioned, the heart valve prosthesis is released to improve the accuracy of the delivery device in implanting the heart valve prosthesis.

[0083] Optionally, 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 protrudes and extends toward the distal end of the outer sleeve 9 and is connected to the accommodating tube section, which is located at the distal end of the outer sleeve 9.

[0084] like Fig. 9 As shown, as an embodiment, the delivery device also includes a second shell 20, and the first shell 11 can rotate circumferentially relative to the second shell 20. When the heart valve prosthesis needs to be circumferentially positioned, the first shell 11 rotates relative to the second shell 20. When the heart valve prosthesis is released or recovered, the first shell 11 is synchronously stationary relative to the second shell 20; a fixing part 10 is provided in the second shell 20, and the proximal end of the outer sleeve 9 is fixedly connected to the fixing part 10, thereby improving the stability of the outer sleeve 9. At the same time, the outer sleeve 9 is sleeved on the outer circumference of the sheath tube 6. When the sheath tube 6 and the outer sleeve 9 are both located inside the human body, the outer sleeve 9 provides a stable support for the sheath tube 6; the proximal end of the sheath tube 6 is connected to the transmission member 5, the inner tube 8 is fixedly connected to the proximal end of the first shell 11, the chamber 13 extends along the axial direction of the first shell 11, the transmission member 5 is embedded in the chamber 13, and when the first shell 11 rotates relative to the sheath tube 6, the transmission member 5 and the first shell 11 rotate synchronously relative to the second shell 20. At the same time, since the proximal end of the sheath tube 6 is fixedly connected to the transmission member 5, the outer sleeve 9 is fixedly connected to the fixing member 10, when the transmission member 5 is relative to the second When the shell 20 rotates, the sheath 6 also rotates relative to the second shell 20, and also rotates circumferentially relative to the outer sleeve 9; in addition, the proximal end of the inner tube 8 is fixedly connected to the proximal end of the first shell 11. Therefore, when the inner tube 8 rotates relative to the sheath 6, the inner tube 8 also rotates relative to the second shell 20, and also rotates circumferentially relative to the outer sleeve 9. Finally, when the first shell 11 rotates relative to the second shell 20, the sheath 6 and the inner tube 8 rotate circumferentially synchronously relative to the outer sleeve 9. When they rotate to the position where the heart valve prosthesis needs to be implanted, the heart valve prosthesis is released, thereby improving the accuracy of the implantation position of the heart valve prosthesis.

[0085] like Fig. 9 As shown, optionally, an installation cavity 201 is provided in the second shell 20, and the fixing member 10 includes a fixing column and a fixing portion connected to the fixing column. The fixing column is embedded in the installation cavity 201, thereby realizing the preliminary fixation of the fixing member 10 and the second shell 20. At least one fixing hole is provided on the fixing portion, and at least one fixing matching hole corresponding to the fixing hole is provided on the second shell 20. The fastener passes through the fixing matching hole and the fixing hole, thereby fixing the fixing member 10 to the second shell 20. At the same time, the proximal end of the outer sleeve 9 is threadedly connected to the fixing column, thereby realizing the fixed connection between the outer sleeve 9 and the fixing column.

[0086] Optionally, a hollow channel is provided in the axial direction of the fixing member 10, and the sheath 6 and the inner tube 8 both pass through the hollow channel and are respectively connected to the transmission member 5 and the proximal end of the first shell 11; when the first shell 11 rotates circumferentially relative to the second shell 20, the sheath 6 and the inner tube 8 can rotate circumferentially synchronously relative to the second shell 20, thereby further realizing the circumferential positioning of the heart valve prosthesis by the delivery device.

[0087] like Figure 7 and 9 As shown, in the second aspect, the embodiment of the present application further provides a handle 1 of an interventional heart valve prosthesis delivery device, including a first shell 11, and at least two mounting grooves 14 are provided circumferentially of the first shell 11, and the mounting groove 14 is used to accommodate a first drive assembly 21, so that the first drive assembly 21 can rotate in the mounting groove 14, and the groove circumferential wall of the mounting groove 14 plays a role of stabilizing support for the first drive assembly 21, thereby facilitating medical personnel to drive the first drive assembly 21 to rotate at multiple angles, thereby improving the operability of the handle 1.

[0088] Optionally, two mounting grooves 14 are evenly distributed around the circumference of the first shell 11, so that after the handle 1 is rotated, it is convenient for medical personnel to select an angle suitable for them to operate the first drive assembly 21, thereby improving the convenience of operation for medical personnel.

[0089] like Figure 6 As shown, as an embodiment, a plug-in column 18 is further provided at the distal end of the first shell 11 , and a plurality of teeth are provided at the distal end of the plug-in column 18 , with tooth grooves formed between two adjacent teeth.

[0090] In the process of implementing the above-mentioned scheme, a plug-in column 18 is also provided at the distal end of the first shell 11, and the handle 1 also includes a second shell 20. The proximal end of the second shell 20 is provided with a plug-in groove corresponding to the plug-in column 18. The plug-in column 18 is inserted into the second shell 20 to realize the connection between the plug-in column 18 and the second shell 20. At the same time, the second shell 20 is a columnar structure, and the plug-in column 18 is inserted into the plug-in groove. The first shell 11 can rotate circumferentially relative to the second shell 20, and the sheath 6 rotates circumferentially relative to the second shell 20 synchronously. The sheath 6 and the inner tube 8 clamp the heart valve prosthesis, thereby realizing the circumferential positioning of the heart valve prosthesis.

[0091] In addition, a plurality of teeth are provided at the end of the insertion slot 18, and a tooth groove is formed between two adjacent teeth. A locking member 100 is provided in the second shell 20, and the locking member 100 can be inserted into the tooth groove to lock or unlock the relative position between the first shell 11 and the second shell 20, thereby determining the circumferential rotation angle of the first shell 11 relative to the second shell, which is convenient for the handle 1 to perform circumferential positioning of the heart valve.

[0092] like Fig. 9As shown, a limiting space 202 is further provided in the second shell 20, and the limiting space 202 is extended along the axial direction of the second shell 20. One side of the limiting space 202 is separated from the installation cavity 201 by a partition, and the other side is connected to the accommodating groove 203. A part of the locking member 100 is located in the limiting space 202 and can move axially relative to the limiting space 202, thereby locking or unlocking the tooth groove. Further, when the first shell 11 is rotated relative to the second shell 20 to a suitable release circumferential angle of the heart valve prosthesis, the locking member 100 is used to lock the tooth groove to prevent the first shell 11 from continuing to rotate, thereby achieving the purpose of accurate implantation of the heart valve prosthesis.

[0093] Optionally, the proximal end of the second shell 20 is also provided with a receiving groove 203 for receiving multiple teeth, and the receiving groove 203 is connected to the plug-in groove. When the first shell 11 rotates relative to the second shell 20, the multiple teeth at the end of the plug-in column also rotate in the receiving groove 203.

[0094] like Figure 7 As shown, as an embodiment, three mounting grooves 14 are arranged in the circumference of the first shell 11 .

[0095] In the process of implementing the above-mentioned scheme, three installation grooves 14 are evenly distributed on the circumference of the first shell 11, and the axes of two adjacent installation grooves 14 are set at 120 degrees. Since the circumferential rotation angle of the handle 1 is unknown, three first drive assemblies 21 are set on the circumference of the first shell 11, which can facilitate medical staff to operate any first drive assembly 21, thereby releasing or retracting the heart valve prosthesis, and improving the convenience of medical staff in operating the delivery device.

[0096] like Figure 7 As shown, as an implementation mode, the first shell 11 includes a first upper shell and a second lower shell, and the first upper shell and the second lower shell are interlocked with each other, so that it is convenient to install and maintain other parts in the first shell 11.

[0097] like Figure 6 As shown, optionally, the length of the first upper shell is greater than that of the second lower shell, and a protruding section 19 is provided at the proximal end of the first upper shell. When the first upper shell and the second lower shell are buckled together, the protruding section 19 is connected to the proximal end of the second lower shell, and the protruding section 19 is used to connect the recovery line assembly on the handle.

[0098] Optionally, the second shell 20 is also configured to be interlocked, which facilitates the installation and maintenance of other parts in the second shell 20 .

[0099] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0100] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0101] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. An interventional heart valve prosthesis delivery device, characterized in that: include: handle; A delivery assembly extending within the handle and movable axially relative to the handle; The conveying assembly includes a transmission rod; At least two first drive assemblies for driving the same transmission rod, the first drive assemblies are arranged along the circumference of the same transmission rod, the first drive assemblies are in transmission connection with the same transmission rod, and are used to drive the same transmission rod to move axially relative to the handle; The first drive assembly comprises a second drive assembly, the second drive assembly is arranged on the transmission rod, the first drive assembly is in transmission connection with the second drive assembly, and the first drive assembly is adapted to drive the second drive assembly to rotate so that the transmission rod moves axially relative to the handle; The first driving assembly includes a first driving member, a first driving portion is provided at an end of the first driving member, and the second driving assembly includes a second driving member, a second driving portion is provided at an end of the second driving member, and the second driving portion is meshed with the first driving portion.

2. The invasive heart valve prosthesis delivery device according to claim 1, characterized in that: The first driving assembly comprises a first supporting member sleeved on the outer periphery of the first driving member, and the first supporting member is tightly fitted and connected with the first driving member; The second driving assembly includes a second supporting member sleeved on the outer periphery of the second driving member, the second supporting member is tightly fitted with the second driving member, the transmission rod passes through the second driving member and is threadedly connected to the second driving member, and the first driving member is suitable for driving the second driving member to rotate so that the transmission rod moves axially relative to the handle.

3. The invasive heart valve prosthesis delivery device according to claim 2, characterized in that: 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 groove is formed between two adjacent second driving teeth, and the plurality of first driving teeth are meshed with the plurality of driving tooth grooves.

4. The invasive heart valve prosthesis delivery device according to claim 2 or 3, characterized in that: It includes a power rod, the first driving member is provided with a recessed portion, the recessed portion is formed by one end of the first driving member being recessed toward the first driving member, and one end of the power rod can be inserted into the recessed portion to drive the first driving member to rotate.

5. The invasive heart valve prosthesis delivery device according to claim 4, characterized in that: The handle comprises a first shell, the first shell is provided with a mounting groove corresponding to the first driving assembly, an annular boss is provided in the mounting groove, and the first support member is located in the mounting groove and abuts against the annular boss.

6. The invasive heart valve prosthesis delivery device according to claim 5, characterized in that: A limiting groove is provided in the first shell, and the second supporting member is embedded in the limiting groove.

7. The invasive heart valve prosthesis delivery device according to claim 6, characterized in that: An end cover for resisting the first supporting member is also provided at the opening position of the installation groove, and the end cover is detachably connected to the groove peripheral wall of the installation groove.

8. The invasive heart valve prosthesis delivery device according to claim 6, characterized in that: A chamber is provided in the first shell, the chamber is communicated with the limiting groove, and the chamber extends along the axial direction of the first shell; A transmission member is installed in the chamber, and the conveying assembly also includes a sheath tube. The proximal end of the sheath tube and the distal end of the transmission rod are respectively connected to the transmission member, and the transmission rod is suitable for axial movement along the chamber so that the transmission member slides along the chamber and drives the sheath tube to move axially relative to the first shell.

9. The invasive heart valve prosthesis delivery device according to claim 8, characterized in that: The proximal end of the sheath tube is sleeved with a reinforcing tube, the reinforcing tube is fixedly connected to the sheath tube, and the proximal end of the reinforcing tube is fixedly connected to the transmission member, and The reinforcing tube is provided with a plurality of holes for applying glue.

10. The invasive heart valve prosthesis delivery device according to claim 8, characterized in that: A sliding block is provided at the proximal end of the transmission rod, and a sliding groove is also provided in the first shell. The sliding block is embedded in the sliding groove and slidably cooperates with the sliding groove. A stop portion is provided at the proximal end of the sliding groove for stopping and limiting the sliding block.

11. The invasive heart valve prosthesis delivery device according to claim 7, characterized in that: A channel is provided in the distal end of the first shell, and a conical head is provided at the distal end of the reinforcement tube for passing through the channel; The channel is communicated with the chamber, and the sheath tube passes through the channel and is connected with the transmission member in the chamber.

12. A handle of an invasive heart valve prosthesis delivery device according to any one of claims 1 to 11, characterized in that: It comprises a first shell, wherein the circumference of the first shell is provided with at least two mounting grooves for accommodating the first driving assembly.

13. The handle according to claim 12, characterized in that The distal end of the first housing is provided with a plug-in column, and the distal end of the plug-in column is provided with a plurality of teeth; The handle includes a second shell, a proximal end of which is provided with an insertion slot, and the insertion column is inserted into the insertion slot; the proximal end of the second shell is provided with a receiving slot for accommodating a plurality of the teeth, the receiving slot is connected to the insertion slot, and the receiving slot can accommodate the rotation of the plurality of teeth.

14. The handle according to claim 13, characterized in that The first shell comprises a first upper shell and a second lower shell, and the first upper shell and the second lower shell are buckled with each other; The second shell includes a second upper shell and a second lower shell, and the second upper shell and the second lower shell are buckled with each other.

15. The handle according to claim 14, characterized in that The first shell is provided with three mounting grooves in the circumference thereof.

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