Interventional heart valve prosthesis delivery device and threading device thereof

Abstract

The present application relates to the technical field of medical devices, and provides an interventional heart valve prosthesis delivery device and a threading member thereof, wherein the interventional heart valve prosthesis delivery device comprises: an outer tube; an inner tube located in the outer tube; a threading member, which is arranged on the inner tube, and is provided with a threading hole and a positioning portion; a thread end positioning member, one end of which is detachably positioned in the positioning portion of the threading member; a pulling member, one end of which passes through the threading hole to connect to the heart valve prosthesis and is connected to the thread end positioning member, and the other end extends out of the outer tube. Through the technical solution of the present application, the relative position of the heart valve prosthesis and the heart can be adjusted, and the accuracy of the implantation of the heart valve prosthesis can be improved.

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 threading member thereof. Background Art

[0002] Heart valvular disease is one of the most common heart diseases in my country. In recent years, with the aging of the population, valvular degeneration (including calcification and myxoid degeneration, etc.) and metabolic valvular damage have also increased in my country. At present, 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 required to deliver the heart valve prosthesis, control its shape and release it. In the prior art, when the implantation position of the heart valve prosthesis is inaccurate, it is not easy to adjust the position of the heart valve prosthesis relative to the heart, thereby increasing the risk of surgery and reducing the success rate of the surgery. Summary of the invention

[0004] The technical problem to be solved by the present application is to provide a heart valve prosthesis delivery device and a threading member thereof, which can adjust the relative position of the heart valve prosthesis and the heart, and improve the accuracy of the heart valve prosthesis implantation.

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

[0006] In the first aspect, the present application provides an interventional heart valve prosthesis delivery device, comprising: an outer tube; an inner tube located in the outer tube; a threading piece, which is provided on the inner tube and is provided with a threading hole and a positioning portion; a thread head positioning piece, one end of which is detachably positioned in the positioning portion of the threading piece; a pulling piece, one end of which passes through the threading hole to connect to the heart valve prosthesis and is connected to the thread head positioning piece, and the other end extends out of the outer tube.

[0007] As an embodiment, the threading member is provided with an abutment platform for abutting against a heart valve prosthesis.

[0008] As an embodiment, the abutment platform includes an outer ring portion extending outwardly along the radial direction of the threading member and a tapered portion gradually tapering from the outer ring portion toward the proximal direction.

[0009] As an implementation manner, a plurality of threading holes penetrating through the abutment platform are provided on the conical portion.

[0010] As an implementation manner, the number of the threading holes is three, and the three threading holes are arranged along the circumference of the tapered portion.

[0011] As an embodiment, the threading member includes a plurality of support plates, and the support plates are extended along the outer ring portion toward the distal direction, and a receiving space is formed between two adjacent support plates, and the receiving space is communicated with the threading hole.

[0012] As an implementation manner, the positioning portion is provided on a side of the abutment platform facing away from the support sheet.

[0013] As an embodiment, three pulling members are provided, and the three pulling members respectively pass through the three threading holes and are used to be connected with the heart valve prosthesis.

[0014] As an embodiment, it includes a handle, the outer tube extends from the handle, a receiving space for accommodating a heart valve prosthesis is provided between the outer tube and the inner tube, and the outer tube is suitable for moving axially along the handle to unfold or place the heart valve prosthesis in the receiving space.

[0015] As an embodiment, the interventional heart valve prosthesis delivery device includes a heart valve prosthesis, wherein the heart valve prosthesis is provided with a plurality of connecting ring groups, and when the heart valve prosthesis is in a contracted state, each of the connecting ring groups abuts against the abutment platform and corresponds to the threading hole on the same side;

[0016] One ends of the plurality of pulling members are connected to the handle, and the other ends respectively pass through the threading holes and the connecting ring groups corresponding to the threading holes, and are connected to the thread end positioning member in a detachable manner.

[0017] As an embodiment, the threading member is provided with a protrusion for fitting with one side of the connecting ring set.

[0018] As an embodiment, the threading member is provided with a channel for guiding the inner tube to pass through.

[0019] As an embodiment, the positioning portion is provided with a positioning hole extending along the axial direction of the threading member, the extension direction of the positioning hole is parallel to the extension direction of the channel, and one end of the thread end positioning member can be inserted into the positioning hole.

[0020] In a second aspect, the present application introduces a threading member for an interventional heart valve prosthesis delivery device, comprising: a channel for guiding an inner tube to pass through, a threading hole for guiding a pulling member to pass through, and a positioning portion for positioning a thread head positioning member.

[0021] As an embodiment, it includes an abutment platform for abutting against a heart valve prosthesis, the abutment platform includes an outer ring portion and a tapered portion that gradually tapers from the outer ring portion toward the proximal end, and the threading holes are arranged on the circumference of the abutment platform.

[0022] As an embodiment, the end surface of the abutment platform is further provided with a plurality of support plates, and the support plates are extended along the end surface of the outer ring portion toward the distal end of the threading member, and a receiving space is formed between two adjacent support plates, and the receiving space is connected to the threading hole.

[0023] As an implementation manner, the threading member is provided with a protrusion, and the protrusion and the supporting sheet are located on the same side of the abutment platform.

[0024] As an implementation manner, the positioning portion is provided with a positioning hole extending in the axial direction, and the extending direction of the positioning hole is parallel to the extending direction of the channel.

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

[0026] 1. A threading piece is arranged on the inner tube, and a threading hole and a positioning part are arranged on the threading piece. One end of the thread end fixing piece is detachably connected to the threading piece through the positioning part. One end of the pulling piece passes through the threading hole and is connected to the heart valve prosthesis, and then is connected to the thread end fixing piece. When the outer tube slides toward the proximal end, the heart valve prosthesis is implanted. When the implantation position of the heart valve prosthesis is inaccurate, since the pulling piece limits the proximal end of the heart valve prosthesis, the pulling piece can be controlled to provide pulling force to the heart valve prosthesis, thereby adjusting the relative position of the heart valve prosthesis with respect to the heart, thereby realizing the accurate release of the heart valve prosthesis.

[0027] 2. The threading hole is set along the tapered portion. On the one hand, it is used to guide the pulling member to pass through. On the other hand, the threading hole is set on the periphery of the channel to reduce the obstruction to blood flow during the operation.

[0028] 3. The abutment platform cooperates with the protrusion, so that when the heart valve prosthesis is not accurately implanted in the correct position, the pulling member can tighten the heart valve prosthesis again to pull the heart valve prosthesis back to the abutment platform and fit it with the protrusion, thereby releasing the heart valve prosthesis again. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] 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.

[0030] Figure 1 A schematic diagram of the partial structure of an invasive heart valve prosthesis delivery device provided in an embodiment of the present application;

[0031] Figure 2A schematic diagram of a partial structure of a threading member provided in an embodiment of the present application;

[0032] Figure 3 A schematic structural diagram of a threading member provided in an embodiment of the present application from one perspective;

[0033] Figure 4 A schematic structural diagram of a threading member provided in an embodiment of the present application from another perspective;

[0034] Figure 5 A schematic diagram of the structure of an interventional heart valve prosthesis delivery device provided in an embodiment of the present application;

[0035] Figure 6 A schematic diagram of the connection method between the pulling member and the thread end positioning member provided in an embodiment of the present application.

[0036] Icons: 1-threading piece; 11-positioning part; 12-channel; 14-threading hole; 15-abutment platform; 151-outer ring part; 152-conical part; 16-support plate; 17-protrusion; 18-accommodating space; 2-inner tube; 3-outer tube; 4-heart valve prosthesis; 41-connecting ring group; 5-thread head positioning piece; 6-pulling piece; 7-handle; 8-first thread buckle; 9-second thread buckle. DETAILED DESCRIPTION

[0037] 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.

[0038] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. At the same time, in the description of this application, the term "distal end" refers to the end of the components in the delivery device close to the heart tissue, and the "proximal end" refers to the end of the delivery device 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.

[0039] like Figure 5 As shown, in the first aspect, an embodiment of the present application introduces an interventional heart valve prosthesis delivery device, which can be used to perform heart valve replacement surgery. A accommodating space for accommodating a heart valve prosthesis 4 is provided between the outer tube 3 and the inner tube 2. In the delivery state, the heart valve prosthesis 4 is placed in the accommodating space in a contracted state.

[0040] During the operation, the medical staff operates the delivery device to control the outer tube 3 to slide toward the proximal end. During the sliding process, the distal end of the heart valve prosthesis 4 is deformed into an expanded state through its own elastic deformation, while the proximal end is in a contracted state due to the tension of the traction member 6. After the medical staff confirms the accurate implantation position, the traction member 6 is controlled to separate from the heart valve prosthesis 4. The proximal end of the heart valve prosthesis 4 is not constrained by the traction member 6, the heart valve prosthesis 4 is fully expanded from the accommodating space, the heart valve prosthesis 4 is separated from the delivery device, and the operation is completed.

[0041] like Figure 1 and 5 As shown, as an embodiment, the interventional heart valve prosthesis delivery device includes an outer tube 3, an inner tube 2 in the outer tube 3, the inner tube 2 extends in the outer tube 3, and also includes a threading member 1, a thread end positioning member 5 and a pulling member 6. The threading member 1 is sleeved on the outer periphery of the inner tube 2 and is fixedly connected to the inner tube 2. The threading member 1 is provided with a threading hole 14 and a positioning portion 11. One end of the thread end positioning member 5 can be inserted into the positioning portion 11 and is detachably connected to the threading member 1 through the positioning portion 11. One end of the pulling member 6 passes through the threading hole 14 and is used to It is connected to the heart valve prosthesis 4, and finally connected to the thread end positioning member 5, and the other end extends out of the outer tube 3, so that when the delivery device is releasing the heart valve prosthesis 4, when the implantation position of the heart valve prosthesis 4 is inaccurate, the pulling member 6 can be tightened, and the pulling member 6 plays a role of auxiliary force application. The pulling member 6 further pulls the connecting ring group 41 corresponding to the heart valve prosthesis 4, thereby achieving fine adjustment of the position of the heart valve prosthesis 4 relative to the heart, and improving the accuracy of the implantation of the heart valve prosthesis 4;

[0042] In addition, during the release process of the heart valve prosthesis 4, the distal end of the heart valve prosthesis 4 gradually expands, while the proximal end is in a contracted state due to the restriction of the pulling member 6. The medical staff pulls the heart valve prosthesis 4 by the pulling member 6 to control the release process of the heart valve prosthesis 4, thereby completing the precise release of the heart valve prosthesis 4 and improving the success rate of the operation; when the heart valve prosthesis 4 is in the accurate position, the thread end positioning member 5 is pulled out from the positioning portion 11, so that one end of the pulling member 6 falls off the thread end positioning member 5, and the proximal end of the heart valve prosthesis 4 is also in an expanded state, and the heart valve prosthesis 4 is released.

[0043] Optionally, when the thread end positioning piece 5 is inserted into the positioning portion 11, the pulling piece 6 will restrict the proximal end of the heart valve prosthesis 4 to prevent the heart valve prosthesis 4 from being released freely. By controlling the release process of the heart valve prosthesis 4, it is possible to prevent the heart valve prosthesis 4 from causing damage to human tissue during the deployment process, and it is also possible to prevent inaccurate positioning of the heart valve prosthesis 4 from affecting the surgical effect.

[0044] Optionally, the delivery device of the present application, in addition to being able to control the release process of the heart valve prosthesis 4, can further improve the accuracy of implantation of the heart valve prosthesis 4. For example, when the release position of the heart valve prosthesis 4 is incorrect, since the proximal end of the heart valve prosthesis 4 is restricted by the pulling member 6, the outer tube 3 is slid toward the distal end to retract the heart valve prosthesis 4 and release it again; or, the position of the heart valve prosthesis 4 can be fine-tuned by pulling the pulling member 6.

[0045] Optionally, the pulling member 6 may be a connecting wire, etc., and the wire end positioning member 5 is a rod-shaped structure.

[0046] like Figure 2 As shown, as an embodiment, the threading piece 1 is provided with an abutment platform 15 for abutting the heart valve prosthesis 4. By providing the abutment platform 15, when the heart valve prosthesis 4 is not accurately implanted in the correct position, the proximal end of the heart valve prosthesis 4 is in the expanded state, and the proximal end of the heart valve prosthesis 4 is pulled by the pulling piece 6, and the heart valve prosthesis 4 moves toward the threading piece 1 and abuts against the abutment platform 15. The abutment platform 15 serves as a limiting support for the heart valve prosthesis 4, and then moves toward the distal end through the outer tube 3 to recover the heart valve prosthesis 4. After adjusting the implantation position, the medical staff releases it again to improve the accuracy of the implantation of the heart valve prosthesis 4 and improve the success rate of the operation.

[0047] like Figure 4 As shown, as an embodiment, the abutment platform 15 includes an outer ring portion 151 extending outwardly in the radial direction of the threading member 1. By setting the outer ring portion 151, an abutment platform for the heart valve prosthesis 4 is provided, so that the heart valve prosthesis 4 can stably abut on the outer ring portion 151, while also preventing the heart valve prosthesis 4 from passing through the outer periphery of the outer ring portion 151; the abutment platform 15 also includes a tapered portion 152 that gradually tapers from the outer ring portion 151 to the proximal direction. The tapered portion 152 is a tapered structure. During the operation, the tapered portion 152 can reduce the obstruction to the blood and facilitate the flow of blood.

[0048] like Figure 3As shown, as an embodiment, a plurality of threading holes 14 penetrating the abutment platform 15 are provided on the conical portion 152. The abutment platform 15 is penetrated through the threading holes 14, which facilitates the pulling member 6 to pass through the threading holes 14, thereby avoiding the pulling member 6 from bending at an angle, which affects the operation of medical staff; at the same time, by providing a plurality of threading holes 14, a plurality of pulling members 6 respectively pass through the plurality of threading holes 14, thereby avoiding the pulling members 6 from being entangled together when pulling the heart valve prosthesis 4, thereby affecting the operation process and improving the success rate of the operation; in addition, a plurality of pulling members 6 respectively pass through the plurality of threading holes 14, each pulling member 6 can work independently without affecting each other. When the medical staff needs to fine-tune the heart valve prosthesis 4, one or more pulling members 6 can be controlled independently to adjust the heart valve prosthesis 4 to the correct position, thereby improving the accuracy of the implantation of the heart valve prosthesis 4.

[0049] As a possible implementation, the threading hole 14 may also be provided as one, thereby reducing the number of openings of the threading member 1 and lowering the production cost.

[0050] like Figure 2 and 3 As shown, as an embodiment, the number of threading holes 14 is set to three, and the three threading holes 14 are arranged along the circumference of the tapered portion 152, so as to ensure that the traction members 6 in the threading holes 14 do not interfere with each other during operation, and each traction member 6 can work independently. When the implantation position of the heart valve prosthesis 4 is inaccurate, the position of the heart valve prosthesis 4 is adjusted by the traction member 6 to improve the precise positioning of the heart valve prosthesis 4.

[0051] Optionally, three threading holes 14 are evenly distributed along the circumference of the tapered portion 152, so that medical staff can choose a suitable angle to adjust the position of the heart valve prosthesis 4 through the pulling member 6, thereby improving the convenience of operation for medical staff; in addition, the three threading holes 14 are arranged to penetrate along the axial direction of the threading member 1 to guide blood flow and reduce the obstruction of the threading member 1 to blood, thereby further improving the success rate of the operation.

[0052] like Figure 2 and 4As shown, as an embodiment, the threading piece 1 includes a plurality of support sheets 16, and the support sheets 16 are extended along the end surface of the outer ring portion 151 toward the distal direction, and a receiving space 18 is formed between two adjacent support sheets 16, and the receiving space 18 is communicated with the threading hole 14 to ensure that during the process of recovering the heart valve prosthesis 4, the connecting ring group 41 of the heart valve prosthesis 4 is adjusted in the corresponding receiving space 18 to avoid being affected by other parts of the heart valve prosthesis 4. At the same time, during the process of recovering the heart valve prosthesis 4, the corresponding connecting ring group 41 of the heart valve prosthesis 4 is located in the receiving space 18 and abuts against the outer ring portion 151, and the support sheets 16 play a role of spacing to avoid the heart valve prosthesis 4 affecting each other during the recovery process, thereby improving the recovery success rate.

[0053] Optionally, three support sheets 16 are provided, and the three support sheets 16 are arranged at an angle of 120° to each other, thereby limiting three accommodating spaces 18, each of which is connected to the threading hole 14. When the heart valve prosthesis 4 abuts against the abutment platform 15, the support sheets 16 separate the connecting ring groups 41 on adjacent heart valve prostheses 4 to avoid mutual influence of the connecting ring groups 41, thereby improving the success rate of recovering the heart valve prosthesis 4.

[0054] like Figure 2 As shown, as an embodiment, a positioning portion 11 is provided on the side of the abutment platform 15 facing away from the support sheet 16 , so as to prevent the thread end positioning member 5 from affecting the heart valve prosthesis 4 when the thread end positioning member 5 is inserted into the positioning portion 11 .

[0055] As an embodiment, three pulling members 6 are provided, each of which passes through the threading member 1 and is connected to the heart valve prosthesis 4. Thus, when the position of the heart valve prosthesis 4 needs to be adjusted, the heart valve prosthesis 4 can be subjected to force through a certain pulling member 6 alone, and the other pulling members 6 do not need to be subjected to force on the heart valve prosthesis 4, thereby improving the accuracy of implantation; in addition, during the recovery process, the three pulling members 6 can pull the heart valve prosthesis 4 at different angles while ensuring the success rate of recovery.

[0056] like Figure 5As shown, as an embodiment, the delivery device includes a handle 7, an outer tube 3 and an inner tube 2, the outer tube 3 and the inner tube 2 constitute an inner tube assembly, the outer tube 3 and the inner tube 2 are both connected to the handle 7, the outer tube 3 is sleeved on the outer circumference of the inner tube 2, the inner tube 2 extends in the outer tube 3, and a receiving space for receiving the heart valve prosthesis 4 is provided between the outer tube 3 and the inner tube 2. When the heart valve prosthesis 4 is not implanted, the heart valve prosthesis 4 is located in the receiving space. When implantation is required, the outer tube 3 is moved toward the proximal end of the handle 7, the distal end of the heart valve prosthesis 4 is in an expanded state, and the proximal end is restrained by the pulling member 6 and is in a contracted state. If the medical staff finds that the implantation position is inaccurate, the heart valve prosthesis 4 is tightened, the outer tube 3 moves toward the distal direction, the heart valve prosthesis 4 is accommodated in the receiving space again, and is released again to improve the accuracy of the implantation.

[0057] like Figure 1 and 5 As shown, as an embodiment, the delivery device includes a heart valve prosthesis 4, the heart valve prosthesis 4 includes a plurality of connecting rings, wherein two connecting rings constitute a connecting ring group 41, the heart valve prosthesis 4 includes a plurality of connecting ring groups 41, when the heart valve prosthesis 4 is in a contracted state, each connecting ring group 41 abuts against the abutment platform 15 and corresponds to the threading hole 14 on the same side, so that the pulling member 6 passes through the threading hole 14 and is connected to the connecting ring group 41 conveniently, at the same time, the supporting sheet 16 separates two adjacent connecting ring groups 41 to avoid the adjacent connecting ring groups 41 from affecting each other, one end of the plurality of pulling members 6 is connected to the handle 7, and the other end respectively passes through the threading hole 14 and the connecting ring group 41 corresponding to the threading hole 14, and is finally connected to the thread end positioning member 5 in a releasable manner, when the thread end positioning member 5 leaves the positioning portion 11, the plurality of pulling members 6 are detached from the thread end positioning member 5, after detachment, there is no dead knot on each pulling member 6, so that the medical staff can conveniently recycle the pulling member 6.

[0058] Optionally, the heart valve prosthesis 4 includes 6 connecting rings, every two connecting rings form a connecting ring group 41, forming 3 connecting ring groups 41, each pulling member 6 passes through the threading hole 14 and a connecting ring group 41, and is connected to the thread head positioning member 5 in a detachable manner, thereby achieving restriction of the heart valve prosthesis 4 during the release process and improving the accuracy of implantation.

[0059] Optionally, the pulling member 6 is connected to the thread end positioning member 5 in a releasable manner, including: after the thread end positioning member 5 is pulled out from the positioning portion 11, the pulling member 6 will be detached from the thread end positioning member 5, and at the same time, after the detachment, it will be a complete pulling member 6 without any dead knots on the pulling member 6, thereby facilitating the recovery of the pulling member 6. At the same time, the heart valve prosthesis 4 will be detached from the restraint of the pulling member 6 and be completely released.

[0060] like Figure 61 is a diagram showing the connection between the pulling member 6 and the thread end positioning member 5 in the embodiment of the present application. When the thread end positioning member 5 is detachably inserted into the positioning portion 11, the pulling member 6 is wound around the outer periphery of the thread end positioning member 5, and the thread end positioning member 5 can be detached from the winding knot of the pulling member 6. One end of the pulling member 6 forms a first thread buckle 8, and the main part of the pulling member 6 forms a second thread buckle 9. The first thread buckle 8 and the second thread buckle 9 are arranged opposite to each other and are respectively wrapped around the outer periphery of the thread end positioning member 5. The extension directions of the extension sections of the first thread buckle 8 and the second thread buckle 9 are different. Forces in different directions are applied to the extension sections of the first thread buckle 8 and the second thread buckle 9 respectively, so that the first thread buckle 8 and the second thread buckle 9 are wrapped around the outer periphery of the thread end positioning member 5. At the same time, when the thread end positioning member 5 is inserted into the positioning portion 11, the pulling member 6 cannot be separated from the thread end positioning member 5; when the thread end positioning member 5 is pulled out of the positioning portion 11, the pulling member 6 falls off from the thread end positioning member 5, and the pulling member 6 is recovered to prevent the pulling member 6 from affecting the success rate of the operation.

[0061] Of course, the pulling member 6 of the embodiment of the present application may also be connected to the thread end positioning member 5 in other detachable ways.

[0062] As an embodiment, the connecting ring is ring-shaped, and therefore, a protrusion 17 for fitting with one side of the connecting ring group 41 is provided on the threading member 1, so that after the heart valve prosthesis 4 is recovered, the pulling member 6 applies a pulling force to the heart valve prosthesis 4 in the direction of the threading hole 14, and the connecting ring group 41 fits with the protrusion 17 and also abuts against the outer ring portion 151. Then, the protrusion 17 further provides a stable support for the heart valve prosthesis 4, and also prevents the connecting ring group 41 from being pulled into the threading hole 14 by the pulling member 6, resulting in failure of recovery of the heart valve prosthesis 4.

[0063] Optionally, the protrusion 17 is annular, and may be in other shapes.

[0064] like Figure 2 As shown, as an embodiment, the threading piece 1 is further provided with a channel 12 for guiding the inner tube 2 to pass through, so that the inner tube 2 can pass through the channel 12, thereby achieving the connection between the threading piece 1 and the inner tube 2.

[0065] Optionally, after the inner tube 2 passes through the threading member 1 through the channel 12, it is fixedly connected to the threading member 1 by gluing.

[0066] like Figure 3 As shown, as an embodiment, the positioning portion 11 is provided with a positioning hole extending along the axial direction of the threading piece 1, and the positioning hole is parallel to the extension direction of the channel 12, so that one end of the thread end positioning piece 5 can be stably inserted into the positioning hole, and when the thread end positioning piece 5 is inserted into the positioning hole, the thread end positioning piece 5 is parallel to the inner tube 2, which is convenient for medical staff to pull the thread end positioning piece 5 out of the positioning hole.

[0067] like Figure 2 and 3 As shown, in the second aspect, the embodiment of the present application introduces a threading member 1 for an interventional heart valve prosthesis delivery device, wherein the threading member 1 is installed on the delivery device introduced in the first aspect, wherein the threading member 1 is provided with a channel 12, and the channel 12 is arranged to penetrate along the axial direction of the threading member 1, and the channel 12 and the threading member 1 are on the same axis, so that the inner tube 2 can pass through the channel 12 and be fixedly connected to the threading member 1; at the same time, the threading member 1 is also provided with a threading hole 14 for guiding the pulling member 6 to pass through, so that the pulling member 6 can pass through the threading hole 14 and be connected to the heart valve prosthesis 4, and in addition, the threading member A positioning portion 11 is also provided on the thread piece 1. By setting the positioning portion 11, one end of the thread end positioning piece 5 can be inserted into the positioning portion 11 and can be detachably connected to the threading piece 1 through the positioning portion 11. When the thread end positioning piece 5 is inserted into the positioning portion 11, the pulling piece 6 restricts the heart valve prosthesis 4 to prevent the heart valve prosthesis 4 from being released freely. During the release process, when the implantation position is accurate, the thread end positioning piece 5 is pulled out of the positioning portion 11, the pulling piece 6 is detached from the thread end positioning piece 5, and the heart valve prosthesis 4 is released. At the same time, the pulling piece 6 and the thread end positioning piece 5 are recovered.

[0068] like Figure 2 As shown, as an embodiment, the threading piece 1 is provided with an abutment platform 15 for abutting the heart valve prosthesis 4. By providing the abutment platform 15, when the distal end of the heart valve prosthesis 4 is in the expanded state, the proximal end of the heart valve prosthesis 4 is pulled by the pulling piece 6, and the heart valve prosthesis 4 moves toward the threading piece 1 and abuts against the abutment platform 15. The abutment platform 15 serves as a limiting support for the heart valve prosthesis 4. When the heart valve prosthesis 4 is not accurately implanted in the correct position, the heart valve prosthesis 4 is pulled against the abutment platform 15 by the pulling of the pulling piece 6, and then moved to the distal end by the outer tube 3 to recover the heart valve prosthesis 4. After adjusting the implantation position, the medical staff releases it again to improve the accuracy of the implantation of the heart valve prosthesis 4 and improve the success rate of the operation.

[0069] like Figure 4 As shown, as an embodiment, the abutment platform 15 includes an outer ring portion 151 extending outwardly in the radial direction of the threading member 1. By setting the outer ring portion 151, an abutment platform for the heart valve prosthesis 4 is provided, so that the heart valve prosthesis 4 can stably abut on the outer ring portion 151, while also preventing the heart valve prosthesis 4 from passing through the outer periphery of the outer ring portion 151; the abutment platform 15 also includes a tapered portion 152 that gradually tapers from the outer ring portion 151 to the proximal direction, and the tapered portion 152 is a tapered structure, thereby reducing the obstruction to the blood and ensuring the fluidity of the blood.

[0070] like Figure 4As shown, as an embodiment, a plurality of threading holes 14 penetrating the abutment platform 15 are provided on the conical portion 152. The threading holes 14 penetrate the abutment platform 15, which facilitates the pulling member 6 to pass through the threading holes 14, thereby avoiding the pulling member 6 from bending at an angle that affects the operation of medical staff.

[0071] As an embodiment, the number of threading holes 14 is set to three, and the three threading holes 14 are arranged along the circumference of the tapered portion 152, so as to ensure that the traction members 6 in the threading holes 14 do not interfere with each other during operation, and each traction member 6 can work independently to avoid the traction members 6 from being entangled together when pulling the heart valve prosthesis 4, thereby affecting the operation process and improving the success rate of the operation; when medical staff need to fine-tune the heart valve prosthesis 4, they can individually control one or more traction members 6 to adjust the heart valve prosthesis 4 to the correct position, thereby improving the accuracy of the implantation of the heart valve prosthesis 4.

[0072] Optionally, three threading holes 14 are evenly distributed along the circumference of the tapered portion 152, so that medical staff can choose a suitable angle to adjust the position of the heart valve prosthesis 4 through the pulling member 6, thereby improving the convenience of operation for medical staff; in addition, the three threading holes 14 are arranged to penetrate along the axial direction of the threading member 1 to guide blood flow and reduce the obstruction of the threading member 1 to blood, thereby further improving the success rate of the operation.

[0073] like Figure 4 As shown, as an embodiment, the threading piece 1 includes a plurality of support sheets 16, and the support sheets 16 are extended along the end surface of the outer ring portion 151 toward the distal direction, and a receiving space 18 is formed between two adjacent support sheets 16, and the receiving space 18 is communicated with the threading hole 14 to ensure that during the process of recovering the heart valve prosthesis 4, the connecting ring group 41 of the heart valve prosthesis 4 is adjusted in the corresponding receiving space 18 to avoid being affected by other parts of the heart valve prosthesis 4. At the same time, during the process of recovering the heart valve prosthesis 4, the corresponding connecting ring group 41 of the heart valve prosthesis 4 is located in the receiving space 18 and abuts against the outer ring portion 151, and the support sheets 16 play a role of spacing to avoid the heart valve prosthesis 4 affecting each other during the recovery process, thereby improving the recovery success rate.

[0074] Optionally, three support sheets 16 are provided, and the three support sheets 16 are arranged at an angle of 120° to each other, thereby limiting three accommodating spaces 18, each of which is connected to the threading hole 14. When the heart valve prosthesis 4 abuts against the abutment platform 15, the support sheets 16 separate the connecting ring groups 41 on adjacent heart valve prostheses 4 to avoid mutual influence of the connecting ring groups 41, thereby improving the success rate of recovering the heart valve prosthesis 4.

[0075] As an embodiment, the connecting ring is annular, and therefore, a protrusion 17 for fitting with one side of the connecting ring group 41 is provided on the threading member 1, so that after the heart valve prosthesis 4 is recovered, the pulling member 6 applies a pulling force to the heart valve prosthesis 4 in the direction of the threading hole 14, and the connecting ring group 41 fits with the protrusion 17 and also abuts against the outer ring portion 151. Then, the protrusion 17 further provides a stable support for the heart valve prosthesis 4, and also prevents the connecting ring group 41 from being pulled into the threading hole 14 by the pulling member 6, resulting in failure of recovery of the heart valve prosthesis 4.

[0076] like Figure 1 As shown, as an embodiment, the positioning portion 11 is provided with a positioning hole extending along the axial direction of the threading piece 1, and the positioning hole is parallel to the extension direction of the channel 12, so that one end of the thread end positioning piece 5 can be stably inserted into the positioning hole, and when the thread end positioning piece 5 is inserted into the positioning hole, the thread end positioning piece 5 is parallel to the inner tube 2, which is convenient for medical staff to pull the thread end positioning piece 5 out of the positioning hole.

[0077] 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.

[0078] 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.

[0079] 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, It is characterized in that include: External pipe; an inner tube located within the outer tube; A threading member is arranged on the inner tube, the threading member is provided with a threading hole and a positioning portion, the threading member is provided with a channel for guiding the inner tube to pass through, and the positioning portion is provided with a positioning hole extending along the axial direction of the threading member; A thread end positioning member, one end of which is detachably positioned in the positioning portion of the threading member, and one end of which can be inserted into the positioning hole; The pulling piece has one end passing through the threading hole to be connected to the heart valve prosthesis and connected to the thread end positioning piece, and the other end extending out of the outer tube.

2. The invasive heart valve prosthesis delivery device according to claim 1, It is characterized in that The threading member is provided with an abutment platform for abutting against a heart valve prosthesis.

3. The invasive heart valve prosthesis delivery device according to claim 2, It is characterized in that The abutment platform includes an outer ring portion extending outwardly in the radial direction of the threading member and a tapered portion gradually tapering from the outer ring portion toward the proximal end.

4. The invasive heart valve prosthesis delivery device according to claim 3, It is characterized in that The conical portion is provided with a plurality of threading holes penetrating through the abutment platform.

5. The invasive heart valve prosthesis delivery device according to claim 4, It is characterized in that The number of the threading holes is three, and the three threading holes are arranged along the circumference of the tapered portion.

6. The invasive heart valve prosthesis delivery device according to any one of claims 3 to 5, It is characterized in that The threading member includes a plurality of support sheets, and the support sheets are extended along the outer ring portion toward the distal end. An accommodating space is formed between two adjacent support sheets, and the accommodating space is communicated with the threading hole.

7. The invasive heart valve prosthesis delivery device according to claim 6, It is characterized in that The positioning portion is provided on a side of the abutting platform away from the supporting sheet.

8. The invasive heart valve prosthesis delivery device according to claim 5, It is characterized in that There are three pulling members, and the three pulling members pass through the three threading holes respectively and are used to be connected with the heart valve prosthesis.

9. The invasive heart valve prosthesis delivery device according to any one of claims 1 to 5, It is characterized in that It comprises a handle, the outer tube extends from the handle, a receiving space for receiving a heart valve prosthesis is arranged between the outer tube and the inner tube, and the outer tube is suitable for moving along the axial direction of the handle so that the heart valve prosthesis can be unfolded or placed in the receiving space.

10. The invasive heart valve prosthesis delivery device according to claim 9, It is characterized in that The interventional heart valve prosthesis delivery device comprises a heart valve prosthesis, wherein the heart valve prosthesis is provided with a plurality of connecting ring groups, and when the heart valve prosthesis is in a contracted state, each of the connecting ring groups abuts against an abutment platform and corresponds to the threading hole on the same side; One ends of the plurality of pulling members are connected to the handle, and the other ends respectively pass through the threading holes and the connecting ring groups corresponding to the threading holes, and are connected to the thread end positioning member in a detachable manner.

11. The invasive heart valve prosthesis delivery device according to claim 10, It is characterized in that The threading piece is provided with a protrusion for fitting with one side of the connecting ring set.

12. The invasive heart valve prosthesis delivery device according to claim 1, It is characterized in that An extending direction of the positioning hole is parallel to an extending direction of the channel.

13. A threading member for an invasive heart valve prosthesis delivery device, It is characterized in that include: A channel for guiding the inner tube to pass through, a threading hole for guiding the pulling member to pass through, and a positioning portion for positioning the thread end positioning member; It comprises an abutment platform for abutting against a heart valve prosthesis, the end surface of the abutment platform is also provided with a plurality of support sheets, the support sheets are extended along the end surface of the outer ring portion toward the distal end of the threading member, and an accommodation space is formed between two adjacent support sheets, and the accommodation space is communicated with the threading hole; The positioning portion is provided with a positioning hole extending in the axial direction, and the extending direction of the positioning hole is parallel to the extending direction of the channel.

14. The threading member according to claim 13, It is characterized in that The abutment platform includes an outer ring portion and a tapered portion that gradually tapers from the outer ring portion toward the proximal end, and the threading holes are arranged on the circumference of the abutment platform.

15. The threading member according to claim 14, It is characterized in that The threading member is provided with a protrusion, and the protrusion and the supporting sheet are located on the same side of the abutment platform.

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