Interventional medical instrument conveying device and system

Abstract

The utility model relates to an interventional medical instrument conveying device and system, the conveying device comprises a capsule assembly, a catheter assembly and a control assembly, the capsule assembly comprises a far-end capsule piece and a loading piece; the catheter assembly comprises a first control tube, a second control tube and a third control tube; the control assembly comprises a first linkage piece, a first actuating piece, a second linkage piece and a second actuating piece. The far end of the first control tube is connected with the far-end capsule part, the near end of the first control tube is connected with the first linkage part, the first linkage part is in threaded transmission with the first actuating part, and circumferential rotation of the first actuating part is used for driving the first linkage part to move axially; the far end of the second control tube is connected with a loading part which is used for assembling an interventional medical device; the far end of the third control tube is used for being detachably connected with a far-end capsule piece; the near end of the third control pipe is connected with a second linkage piece, the second linkage piece is in threaded transmission with a second actuating piece, and circumferential rotation of the second actuating piece is used for driving the second linkage piece to move in the axial direction.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices for cardiac surgery, in particular to an interventional medical device delivery device and system. Background Art

[0002] Valvular heart disease includes lesions of the mitral valve, tricuspid valve, aortic valve and pulmonary valve. These lesions affect normal blood flow, resulting in abnormal cardiac function, bringing pain to patients and even endangering life. At present, one of the treatment methods for valvular regurgitation is transcatheter valve replacement. Transcatheter mitral valve replacement is a new minimally invasive treatment method. An artificial valve is delivered to the position of the native mitral valve through a valve delivery system to replace the function of the native valve.

[0003] The existing problems are that after the existing artificial valve is implanted, the replaced mitral valve may block the blood from flowing from the left ventricle into the aorta, resulting in left ventricular outflow tract obstruction. In addition, the existing artificial mitral valve has a relatively large volume, resulting in an over-sized profile of the delivery system. Moreover, there are differences in the anatomical structures of different patients, and different specifications of valves are required to adapt.

[0004] In some existing solutions, a fishing ring can be released outside the chordae tendineae of the mitral valve first, and then a valve anchoring mechanism is released through the apex to the mitral valve to hook the fishing ring, and finally it is fixed in cooperation with the artificial valve. The foregoing solution can reduce the occurrence probability of left ventricular outflow tract obstruction, and the same specification can also adapt to different patients and reduce the profile of the delivery system.

[0005] In the above solution, there is a capsule-like structure at the distal end of the delivery device of the valve anchoring mechanism and the artificial valve. The distal end of the capsule structure is connected to the inner catheter, the proximal end of the capsule structure is connected to the outer catheter, and there is also a middle catheter connecting the valve anchoring mechanism between the inner catheter and the outer catheter.

[0006] The diameter of the capsule structure in the prior art is larger than the diameter of the outer catheter, and there is a diameter mutation from the capsule structure to the outer catheter, resulting in an increase in bleeding volume when the delivery device is inserted or withdrawn from the heart, and it is necessary to timely adjust the purse-string tightness and the size of the apical incision at the apex. The operation is complex and requires high skills.

[0007] In addition, since the inner diameter of the outer catheter is much larger than the outer diameters of the inner catheter and the middle catheter, the gap between the outer catheter and the inner catheter and the middle catheter is relatively large, resulting in the inner catheter connecting the distal end of the capsule structure shaking left and right in the outer catheter, resulting in poor coaxiality between the distal end and the proximal end of the capsule structure, and difficulty in closing the two, affecting the loading and release of the valve or the valve anchoring mechanism.

[0008] Therefore, there is an urgent need for an improved delivery system to solve the above problems and provide a safer, more effective and simpler valve replacement solution. Summary of the Invention

[0009] The utility model discloses an interventional medical device delivery device and system, aiming to solve the technical problems existing in the prior art.

[0010] The utility model adopts the following technical solutions:

[0011] On the one hand, an embodiment of the utility model provides an interventional medical device delivery device, which includes a capsule assembly, a catheter assembly and a control assembly. The capsule assembly includes a distal capsule part and a loading part; the catheter assembly includes a first control tube, a second control tube and a third control tube arranged in sequence from inside to outside; the control assembly includes a first linkage, a first actuator, a second linkage and a second actuator;

[0012] The distal end of the first control tube is connected to the distal capsule part. The distal capsule part is used to accommodate the interventional medical device and radially limit it. The proximal end of the first control tube is connected to the first linkage. The first linkage and the first actuator are in screw drive. The circumferential rotation of the first actuator is used to drive the axial movement of the first linkage;

[0013] The distal end of the second control tube is connected to the loading part. The loading part is used to assemble the interventional medical device;

[0014] The distal end of the third control tube is used to be detachably connected to the distal capsule part; the proximal end of the third control tube is connected to the second linkage. The second linkage and the second actuator are in screw drive. The circumferential rotation of the second actuator is used to drive the axial movement of the second linkage.

[0015] As a preferred technical solution, the distal capsule part includes a guiding part and a accommodating part. The guiding part is arranged at the distal end and is conical. The large diameter end of the guiding part is connected to the accommodating part. The accommodating part is arranged at the proximal end and is in a hollow tubular shape, and is used to accommodate the loading part and the compressed interventional medical device.

[0016] As a preferred technical solution, the proximal end of the accommodating part can be docked with the distal end of the third control tube, and the outer diameter of the accommodating part is the same as the outer diameter of the third control tube.

[0017] As a preferred technical solution, the loading part is in a disc shape, and at least one connecting groove is arranged on its circumference. The connecting groove is used to be connected to the connecting piece of the compressed interventional medical device and axially limit it.

[0018] As a preferred technical solution, the control assembly further includes a first fixing piece. The first fixing piece is arranged between the first actuator and the second actuator, and the first fixing piece is connected to the proximal end of the second control tube.

[0019] As a preferred technical solution, the control assembly further includes a handle housing. The proximal end of the catheter assembly is disposed through the handle housing. The first actuator, the first fixing member, and the second actuator are sequentially arranged on the handle housing from the proximal end to the distal end. The first actuator and the second actuator are rotatably arranged on the handle housing, and the first fixing member is fixedly arranged on the handle housing.

[0020] As a preferred technical solution, the control assemblies are all axially penetrated. The second control tube extends out of the second linkage member and is connected to the first fixing member. The first control tube extends out of the first fixing member and is connected to the first linkage member.

[0021] As a preferred technical solution, it further includes a coaxial member. The middle part of the coaxial member is axially penetrated and fixedly connected to the second control tube. The outer side surface of the coaxial member is used to support the third control tube.

[0022] As a preferred technical solution, the outer diameter of the coaxial member is smaller than the inner diameter of the third control tube.

[0023] On the other hand, an embodiment of the present invention further provides an interventional medical device delivery system, including the interventional medical device delivery device described in any one of the above, and further including an interventional medical device.

[0024] One embodiment of the above-mentioned utility model has the following advantages or beneficial effects:

[0025] The present invention mainly provides an interventional medical device delivery device and system. In this delivery device, the distal capsule member can radially limit the compressed interventional medical device, ensuring that the interventional medical device can remain stable within the distal capsule member during the delivery and release processes. At the same time, the proximal capsule structure of this device is cancelled, and instead, the distal end of the third control tube is directly and detachably connected to the distal capsule member, and the outer diameter of the third control tube is the same as the outer diameter of the accommodating portion of the distal capsule member, so that during the process of entering or withdrawing from the apex, there is no need to adjust the size of the apex incision and the tightness of the purse-string suture, reducing the complexity of the surgical operation, reducing the trauma and blood loss to the patient, and promoting faster postoperative recovery.

[0026] In addition, a coaxial member is further provided between the second control tube and the third control tube. The middle part of the coaxial member is axially penetrated and fixedly connected to the second control tube. The outer side surface of the coaxial member is used to support the third control tube, thereby ensuring the coaxiality between the third control tube, the second control tube, and the first control tube, preventing difficulty in closing the distal capsule member and the third control tube, and at the same time ensuring that the distal capsule member will not accidentally shake during the delivery process, making its connection with the third control tube more stable and reliable. Description of the Drawings

[0027] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the attached drawings required for the description of the embodiments. These drawings form a part of the present utility model. The schematic embodiments and explanations of the present utility model do not constitute an improper limitation to the present utility model. In the drawings:

[0028] Figure 1 Schematic structural diagram of an interventional medical device delivery device disclosed in a preferred embodiment of Embodiment 1 of the present utility model;

[0029] Figure 2 Partial structural diagram of an interventional medical device delivery device disclosed in another preferred embodiment of Embodiment 1 of the present utility model;

[0030] Figure 3 State diagram of an interventional medical device delivery device disclosed in a preferred embodiment of Embodiment 1 of the present utility model before assembling the valve anchoring mechanism;

[0031] Figure 4 State diagram of an interventional medical device delivery device disclosed in a preferred embodiment of Embodiment 1 of the present utility model during the assembly of the valve anchoring mechanism;

[0032] Figure 5 State diagram of a distal capsule member starting to cover the valve anchoring mechanism disclosed in a preferred embodiment of Embodiment 1 of the present utility model;

[0033] Figure 6 State diagram of a distal capsule member after being connected to a third control tube disclosed in a preferred embodiment of Embodiment 1 of the present utility model;

[0034] Figure 7 Schematic structural diagram of a valve anchoring mechanism in a compressed state disclosed in a preferred embodiment of Embodiment 1 of the present utility model;

[0035] Figure 8 Schematic structural diagram of a valve anchoring mechanism in an expanded state disclosed in a preferred embodiment of Embodiment 1 of the present utility model;

[0036] Figure 9 Schematic diagram of a valve anchoring mechanism after being implanted into the heart disclosed in Embodiments 1 and 2 of the present utility model.

[0037] Explanation of reference numerals:

[0038] Distal capsule member 11, guiding portion 111, accommodating portion 112, loading member 12, first control tube 21, second control tube 22, third control tube 23, coaxial member 31, first linkage member 41, first actuating member 42, second linkage member 43, second actuating member 44, first fixing member 45, handle housing 46, valve anchoring mechanism 51, connecting member 511, fishing ring 61, artificial valve 71, autologous leaflet 81. Detailed implementation manners

[0039] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below in conjunction with specific embodiments of the present utility model and the corresponding drawings. In the description of the present utility model, it should be noted that the term "or" is generally used in the sense of including "and / or", unless otherwise clearly specified in the content.

[0040] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection" and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or a magnetic connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. In addition, in the description of this application, the terms "first", "second", etc. are only used for differential description and cannot be understood as indicating or implying relative importance.

[0041] Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0042] Example 1

[0043] This embodiment provides an interventional medical device delivery device for delivering an interventional medical device to the heart valve to achieve replacement of the corresponding valve. The interventional medical device can be an artificial valve 71 or a valve anchoring mechanism 51, and the target position for delivery can be the mitral valve, tricuspid valve or aortic valve. In this embodiment, the valve anchoring mechanism 51 is taken as an example for illustration, and the delivery device preferably delivers the valve anchoring mechanism 51 to the mitral valve through the apex of the heart.

[0044] Reference Figure 1 — Figure 9, in some embodiments, the interventional medical device delivery device includes a capsule assembly, a catheter assembly, and a control assembly. The capsule assembly is used for delivering and releasing the valve anchoring mechanism 51, and its structure includes a distal capsule member 11 and a loading member 12. The distal capsule member 11 can accommodate the valve anchoring mechanism 51 in a compressed state and radially limit it, and the loading member 12 can assemble the valve anchoring mechanism 51; the catheter assembly is used for delivering the capsule assembly and the valve anchoring mechanism 51, and the structure of the catheter assembly includes, from inside to outside, a first control tube 21, a second control tube 22, and a third control tube 23 arranged in sequence; the control assembly is used for controlling the axial position relationship between adjacent control tubes in the catheter assembly, can realize the opening and closing control of the capsule assembly, and finally realize the control of the release of the valve anchoring mechanism 51. The structure of the control assembly includes a handle housing 46, a first linkage 41, a first actuator 42, a second linkage 43, a second actuator 44, and a first fixing member 45.

[0045] In some embodiments, the distal end of the first control tube 21 is connected to the distal capsule member 11, the proximal end of the first control tube 21 is connected to the first linkage 41, the first linkage 41 is in threaded transmission with the first actuator 42, the distal end of the second control tube 22 is connected to the loading member 12, the distal end of the third control tube 23 is used for separable connection with the distal capsule member 11, the proximal end of the third control tube 23 is connected to the second linkage 43, and the second linkage 43 is in threaded transmission with the second actuator 44. By circumferentially rotating the first actuator 42, the axial movement of the first linkage 41 can be realized, and then the axial movement of the distal capsule member 11 can be driven through the first control tube 21. By axially rotating the second actuator 44, the axial movement of the second linkage 43 can be realized, and then the axial movement of the third control tube 23 can be driven to realize the connection or separation from the distal capsule member 11.

[0046] Such as Figure 1 , in some embodiments, the first actuator 42, the first fixing member 45, and the second actuator 44 are arranged on the handle housing 46 in sequence from the proximal end to the distal end. The first actuator 42 and the second actuator 44 are rotatably arranged on the handle housing 46, and the first fixing member 45 is fixed on the handle housing 46; the control assembly is axially penetrated, the proximal end of the catheter assembly passes through the handle housing 46, the proximal end of the second control tube 22 passes out of the second linkage 43 and is connected to the first fixing member 45, and the proximal end of the first control tube 21 passes out of the first fixing member 45 and is connected to the first linkage 41.

[0047] In some embodiments, both the first actuator 42 and the second actuator 44 are connected to the handle housing 46 through sliding fits, and the sliding surfaces are precisely fitted to provide sufficient supporting force and low friction force, so that the first actuator 42 and the second actuator 44 have sufficient stability and smoothness when rotating.

[0048] In some other embodiments, the first actuator 42 and the second actuator 44 are both connected to the handle housing 46 by bearing fits. When the first actuator 42 or the second actuator 44 rotates, the bearing provides low-friction rotational support to ensure that the first actuator 42 or the second actuator 44 can rotate smoothly.

[0049] In some embodiments, an internal thread is provided on the inner side of the first actuator 42, and an external thread is provided on the outer side of the first linkage 41. The two are in threaded drive cooperation. When the first actuator 42 rotates, the threaded drive mechanism causes the first linkage 41 to move axially. The axial movement of the first linkage 41 further drives the first control tube 21 and the distal capsule member 11 to move axially.

[0050] Similarly to the first actuator 42, an internal thread is also provided on the inner side of the second actuator 44, and an external thread is provided on the outer side of the second linkage 43. When the second actuator 44 rotates on the handle housing 46, the threaded drive mechanism causes the second linkage 43 to move axially. The axial movement of the second linkage 43 further drives the third control tube 23 to move axially, realizing the connection and separation from the distal capsule member 11.

[0051] In some embodiments, the extension length of the internal thread in the first actuator 42 and / or the second actuator 44 is not less than the axial length of the valve anchoring mechanism 51, so as to ensure that after the two actuators rotate in place, the valve anchoring mechanism 51 can be smoothly released from the distal end of the capsule assembly and the third control tube 23.

[0052] In some embodiments, the first fixing member 45 is fixedly connected to the handle housing 46. Since it cannot rotate circumferentially by itself and cannot move axially either, the axial position of the second control tube 22 can be relatively fixed.

[0053] In some embodiments, the first fixing member 45 and the handle housing 46 are of an integral structure.

[0054] In some embodiments, the first linkage 41 is configured as a hollow columnar structure with an axial through-hole in the middle. The proximal end of the first control tube 21 passes through it and is fixedly connected to it to ensure that the first control tube 21 can move with the axial movement of the first linkage 41; the structure of the second linkage 43 is the same as that of the first linkage 41, and it is also configured as a hollow columnar structure. The proximal end of the third control tube 23 passes through it and is fixedly connected to it, so that the third control tube 23 can move with the axial movement of the second linkage 43.

[0055] In some embodiments, a drain pipe can be further connected to the side surface of the first fixing member 45. The drain pipe is communicated with the gap between the second control pipe 22 and the first control pipe 21 for draining. The proximal end of the first linkage member 41 can be further connected with a Luer connector, and through the Luer connector, draining and wire threading can be achieved simultaneously.

[0056] In some embodiments, the axial lengths of the first control pipe 21, the second control pipe 22, and the third control pipe 23 decrease in sequence.

[0057] In some embodiments, the inner diameters of the first control pipe 21, the second control pipe 22, and the third control pipe 23 increase in sequence, and a gap is reserved between adjacent pipe fittings to ensure that the adjacent two can move axially relative to each other.

[0058] In some embodiments, the inner cavity of the first control pipe 21 should at least allow a medical guide wire to pass through. Since medical guide wires have different specifications and different diameters for different specifications to cope with different patients or different lesions, on the premise of meeting the intraoperative requirements, the inner cavity diameter of the first control pipe 21 can be adaptively adjusted according to specific conditions, and the optional diameters of its inner cavity are not listed one by one here.

[0059] In some embodiments, the first control pipe 21, the second control pipe 22, and the third control pipe 23 can be made of the same or different materials, and those skilled in the art can adjust the specifications of each control pipe according to actual needs.

[0060] Such as Figure 2 , in some embodiments, the distal capsule member 11 includes a guiding portion 111 provided at the distal end and a receiving portion 112 provided at the proximal end; the guiding portion 111 is generally conical, and an axially penetrating cavity is provided inside it. The cavity is fixedly connected and communicated with the distal end of the first control pipe 21 for the guide wire to pass through; the receiving portion 112 is connected to the large-diameter end of the guiding portion 111 and is generally hollow tubular for receiving the loading member 12 and the compressed valve anchoring mechanism 51.

[0061] In some embodiments, the distal capsule member 11 is made of a material with high structural strength, such as metals like stainless steel or high-hardness polymer materials, to provide sufficient support force. On the one hand, it can provide radial limitation for the compressed valve anchoring mechanism 51 to facilitate the axial transportation of the entire delivery device in the human body. On the other hand, it can avoid the radial pressure of blood pressure in the blood vessel on the delivery device.

[0062] In some embodiments, the proximal end of the accommodating portion 112 can be docked with the distal end of the third control tube 23; specifically, the proximal end of the accommodating portion 112 and the distal end of the third control tube 23 can be directly aligned and abutted, or corresponding snap structures are respectively provided on the proximal end of the accommodating portion 112 and the distal end of the third control tube 23. The snap structure can be configured as a protrusion and a groove. The protrusion part is located on the inner surface or the outer surface of the proximal end of the accommodating portion 112, and the groove part is correspondingly located on the outer surface or the inner surface of the distal end of the third control tube 23, or the protrusion part is located on the distal end of the third control tube 23, and the groove part is located on the proximal end of the accommodating portion 112.

[0063] In some embodiments, except for the connection area, the outer diameter of the accommodating portion 112 is the same as the outer diameter of the third control tube 23, so that during the process of the capsule assembly entering or withdrawing from the apex, there is no need to adjust the size of the apex incision and the tightness of the purse-string suture, reducing the complexity of the surgical operation, reducing the trauma and bleeding volume of the patient, and promoting faster postoperative recovery.

[0064] In some embodiments, since there is a gap between adjacent pipe fittings in the catheter assembly, it may cause the first control tube 21 connecting the distal capsule member 11 to sway left and right, resulting in a poor coaxiality between the distal capsule member 11 and the third control tube 23, and it is difficult to close them when connecting, affecting the loading and release of the valve anchoring mechanism 51. To avoid this situation, a coaxial member 31 is further provided on the outside of the second control tube 22. The coaxial member 31 is fixedly connected to the second control tube 22, and the outside of the coaxial member 31 is used to support the third control tube 23, thereby ensuring the coaxiality between the third control tube 23 and the second control tube 22 and the first control tube 21, preventing the distal capsule member 11 from being difficult to close with the third control tube 23, and at the same time ensuring that the distal capsule member 11 will not accidentally sway during the delivery process, making its connection with the third control tube 23 more stable and reliable.

[0065] In some embodiments, the outer diameter of the coaxial member 31 is smaller than the inner diameter of the third control tube 23 to ensure that the third control tube 23 can move smoothly back and forth.

[0066] In some embodiments, the coaxial member 31 is configured as a generally hollow cylindrical structure. In addition, it can also be designed as an annular shape, a segmented annular shape (i.e., an unclosed annular shape), etc. Except for the central through hole, other areas of the coaxial member 31 can be configured as solid or hollowed out, and its material can be selected from elastic materials or rigid materials; further, the number of the coaxial members 31 can be set to only one, or multiple can be configured; the coaxial member 31 can be configured at the distal end, proximal end, and / or middle part of the catheter assembly, which will not be specifically limited here.

[0067] In some embodiments, the loading member 12 is in a disc shape, and at least one connecting groove is provided in the circumferential direction thereof. The connecting groove can be configured as a groove that penetrates axially and is open radially, and is used to connect with the connecting member 511 of the valve anchoring mechanism 51, such asFigure 7 and axially limit it. After the distal capsule member 11 moves distally, the valve anchoring mechanism 51 loses its radial constraint, so that it can expand radially from the loading member 12 and disengage.

[0068] In this embodiment, the usage method of the above-mentioned interventional medical device delivery device is as follows:

[0069] As Figure 3 , when installing the valve anchoring mechanism 51, rotate the first actuator 42, the distal capsule member 11 moves distally, and the loading member 12 is exposed. Rotate the second actuator 44, the third control tube 23 moves proximally, and the device loading area is exposed;

[0070] As Figure 4 , snap the connecting member 511 of the valve anchoring member into the connecting groove of the loading member 12;

[0071] As Figure 5 , rotate the first actuator 42 in the reverse direction, the distal capsule member 11 moves proximally, and gradually covers the loading member 12 and the distal part of the valve anchoring member;

[0072] As Figure 6 , rotate the second actuator 44 in the reverse direction, the third control tube 23 moves distally, covers the proximal part of the valve anchoring member, and then gradually contacts the proximal end of the distal capsule member 11 and completes the connection.

[0073] Example 2

[0074] This embodiment discloses an interventional medical device delivery system, which includes the interventional medical device delivery device described in Embodiment 1. In addition, it further includes an interventional medical device. In this embodiment, the interventional medical device is the valve anchoring mechanism 51. It should be noted that the technical features or solutions already recorded in the above-mentioned Embodiment 1 are naturally inherited in this embodiment and will not be elaborated one by one.

[0075] In some embodiments, the valve anchoring mechanism 51 is used in cooperation with the capture loop 61. The valve anchoring mechanism 51 is a metal stent similar to the valve stent structure, such as Figure 8 , the capture loop 61 is a helical coil, which can be coiled around the mitral / tricuspid chordal plexus after release, such as Figure 9 .

[0076] When performing transcatheter heart valve replacement, the capture ring 61 and the valve anchoring mechanism 51 are implanted in sequence. Since the inflow end of the valve anchoring mechanism 51 has a skirt, the skirt can completely cover and closely adhere to the orifice of the mitral / tricuspid valve. Therefore, the problem of paravalvular leakage and regurgitation can be solved before the artificial valve 71 is released. The valve anchoring mechanism 51 can further be provided with a connecting arm. The connecting arm can penetrate into the gap in the junction area of the native valve leaf 81 and be connected to the capture ring 61. At the same time, the axial length of the main body part of the valve anchoring mechanism 51 is less than the axial length of the native valve leaf 81, so as not to affect the function and movement of the native valve leaf 81. The main body part of the valve anchoring mechanism 51 can cooperate with the capture ring 61 to simplify the complex mitral / tricuspid valve structure of the patient into a standard circular channel, providing a stable anchoring channel for the subsequent artificial valve 71. The main body part and the artificial valve 71 are connected by interference fit. And because the main body part has a certain height, when the artificial valve 71 is implanted subsequently, the release height of the artificial valve 71 can be adjusted according to the actual situation of the patient.

[0077] In some embodiments, the method of loading the valve anchoring mechanism 51 into the interventional medical device delivery device is the same as that in Embodiment 1 above and will not be described in detail here.

[0078] In some embodiments, the method of releasing the valve anchoring mechanism 51 from the interventional medical device delivery device is as follows:

[0079] After reaching the target position through the apex at the distal end of the delivery device, rotate the second actuator 44, and the third control tube 23 moves proximally to expose the proximal region of the valve anchoring mechanism 51, facilitating the connection of the valve anchoring mechanism 51 to the capture ring 61. Rotate the first actuator 42, and the distal capsule member 11 moves distally to release the distal part of the valve anchoring mechanism 51 to achieve the complete release of the valve anchoring mechanism 51. After the release is completed, rotate the first actuator 42 and the second actuator 44 in the opposite directions again to reconnect and close the distal end of the third control tube 23 and the proximal end of the distal capsule member 11, and finally withdraw the delivery device from the body.

[0080] Although example embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above example embodiments are merely exemplary and are not intended to limit the scope of the present application thereto. Those of ordinary skill in the art can make various changes and modifications therein without departing from the scope and spirit of the present application. All such changes and modifications are intended to be included within the scope of the present application as claimed in the appended claims.

Claims

1. An interventional medical device delivery device, characterized in that: It comprises a capsule assembly, a catheter assembly and a control assembly, wherein the capsule assembly comprises a distal capsule component and a loading component; the catheter assembly comprises a first control tube, a second control tube and a third control tube which are sequentially arranged from the inside to the outside; the control assembly comprises a first linkage component, a first actuating component, a second linkage component and a second actuating component; The distal end of the first control tube is connected to the distal capsule component, and the distal capsule component is used to accommodate the interventional medical device and limit its radial position. The proximal end of the first control tube is connected to the first linkage component, and the first linkage component and the first actuating component are threadedly driven, and the circumferential rotation of the first actuating component is used to drive the axial movement of the first linkage component. The distal end of the second control tube is connected to the loading piece, and the loading piece is used to assemble the interventional medical device; The distal end of the third control tube is used to be detachably connected to the distal capsule member; the proximal end of the third control tube is connected to the second linkage member, the second linkage member and the second actuator are threadedly driven, and the circumferential rotation of the second actuator is used to drive the axial movement of the second linkage member.

2. The interventional medical device delivery device according to claim 1, characterized in that: The distal capsule component includes a guide portion and a receiving portion. The guide portion is arranged at the distal end and is conical. The large diameter end of the guide portion is connected to the receiving portion. The receiving portion is arranged at the proximal end and is hollow tubular for receiving the loading component and the compressed interventional medical device.

3. The interventional medical device delivery device according to claim 2, characterized in that: The proximal end of the accommodating portion can be docked with the distal end of the third control tube, and the outer diameter of the accommodating portion is the same as the outer diameter of the third control tube.

4. The interventional medical device delivery device according to claim 3, characterized in that: The loading piece is in the shape of a disc and is provided with at least one connecting groove in its circumference. The connecting groove is used to connect with the connecting piece of the compressed interventional medical device and to limit its axial position.

5. The interventional medical device delivery device according to claim 1, characterized in that: The control assembly further includes a first fixing member, which is disposed between the first actuating member and the second actuating member, and is connected to the proximal end of the second control tube.

6. The interventional medical device delivery device according to claim 5, characterized in that: The control assembly also includes a handle housing, the proximal end of the catheter assembly is inserted into the handle housing, the first actuating member, the first fixing member, and the second actuating member are sequentially arranged on the handle housing from the proximal end to the distal end, the first actuating member and the second actuating member are rotatably arranged on the handle housing, and the first fixing member is fixed to the handle housing.

7. The interventional medical device delivery device according to claim 6, characterized in that: The control components are all axially connected; the second control tube passes through the second linkage member and is connected to the first fixing member; the first control tube passes through the first fixing member and is connected to the first linkage member.

8. The interventional medical device delivery device according to any one of claims 1 to 7, characterized in that: It also includes a coaxial member, the middle part of which is axially penetrated and fixedly connected to the second control tube, and the outer side surface of the coaxial member is used to support the third control tube.

9. The interventional medical device delivery device according to claim 8, characterized in that: The outer diameter of the coaxial member is smaller than the inner diameter of the third control tube.

10. An interventional medical device delivery system, characterized in that: It comprises the interventional medical device delivery device as described in any one of claims 1 to 9, and also comprises an interventional medical device.

Images