An implant delivery system with an elastic release device

Abstract

The application relates to the field of medical devices, in particular to an implant device delivery system with an elastic release device, which comprises an implant device, an elastic release device and a delivery catheter; the elastic release device comprises a connecting structure, an elastic member, a rigid member and a release member; the connecting structure is connected with the delivery catheter; one end of the elastic member is fixed with the connecting structure, and the other end is connected with the rigid member; and the distal end of the release member is fixedly connected with the elastic member; when preassembling, the connecting structure and the implant device are circumferentially compressed, the proximal end of the implant device passes through the connecting structure, and the rigid member passes through the proximal end of the implant device to form a detachable connection; when releasing the implant device, the release member is pulled to make the elastic member elastically deform under the pulling of the release member and move towards the proximal end, the elastic member simultaneously drives the rigid member to move towards the proximal end, and the rigid member gradually separates from the implant device to complete the release of the implant device.

Description

Technical Field

[0001] This application relates to the field of medical devices, and more particularly to an implantable device delivery system with an elastic release device. Background Technology

[0002] Aortic stenosis is mainly caused by the sequelae of rheumatic fever, congenital aortic valve structural abnormalities, or age-related aortic valve calcification. Patients are asymptomatic during the compensatory phase, while patients with severe aortic stenosis often experience symptoms such as fatigue, shortness of breath (exertional or paroxysmal), angina, dizziness, or syncope, and may even die suddenly.

[0003] Aortic regurgitation occurs when the aortic valve opens during ventricular contraction, allowing blood from the left ventricle to flow into the aorta and into the body. It closes during ventricular diastole, preventing blood from flowing back into the left ventricle. If aortic regurgitation occurs, the aortic valve cannot close tightly during diastole, causing blood to flow backward from the aorta into the left ventricle.

[0004] In the treatment of aortic valve disease, surgical valve replacement is a traditional and effective treatment method. However, many patients with this disease are elderly and have multiple organ diseases, making them physically unsuitable for surgery and thus becoming patients with no hope of clinical treatment. Furthermore, the etiology of degenerative aortic valve disease remains unclear, making etiological treatment impossible and lacking effective methods to curb its progression; drug therapy is also ineffective. Ideally, treatment for aortic valve disease should both improve patient symptoms and prolong life. Percutaneous aortic valve balloon valvuloplasty, performed in the past, was used to treat aortic stenosis, but both single-center and multi-center registry data showed poor long-term efficacy. In China, surgical valve replacement remains a primary treatment option. In recent years, some scholars both domestically and internationally have conducted basic and clinical research on percutaneous aortic valve replacement and achieved some breakthroughs. This provides an effective treatment method for high-risk elderly patients with degenerative aortic valve disease who require surgical valve replacement. In 2002, Cribier et al. successfully performed transcatheter aortic valve replacement (TAVR). To date, more than 50,000 TAVR procedures have been performed worldwide. Studies around the world have shown that this technique is safe and effective for patients who are not candidates for surgical valve replacement or who face high risks associated with surgical valve replacement. Although most TAVR patients are high-risk, the 30-day survival rate is over 90%, and hemodynamic parameters are significantly improved after TAVR.

[0005] However, autologous aortic valve insufficiency remains a contraindication for TAVR. The main reason is that stable release of the implanted valve is the most critical technical aspect of TAVR surgery. The aortic valve has openings to the left and right coronary arteries, and the mitral valve is adjacent below it. Unstable release can lead to fatal complications such as implanted device ejection, coronary artery occlusion, or severe mitral regurgitation. Traditional TAVR devices, such as SAPIEN and CoreValve, are primarily used for patients with severe aortic stenosis and are not suitable for patients with aortic regurgitation. Domestic scholars and engineers have made some conceptual attempts to address the problem of unstable implanted device release.

[0006] Patent CN201910439503.1 provides a locking device, comprising: a fixing member with an elastically deformable buckle; a connecting member detachably connected to the fixing member; and a releasing member movably sleeved on the outside of the buckle and the connecting point. When the releasing member disengages from the buckle, the buckle pops out and limits the compressed implant; when the releasing member disengages from the connecting point, the fixing member and the connecting member loosen. The technical drawbacks of this solution are: first, the valve stent is not pre-positioned before disengaging from the releasing member, making one-time positioning and release difficult; second, the metal wire at the proximal end of the valve stent has at least one inflection point, requiring significant force to pull the releasing member through this point, and there is a risk of breaking the releasing member and causing release failure; third, the locking device has a complex structure, including force-applying components and fixing channels, making installation complex and increasing the pre-installation workload of the implantable device, while the complex release process increases the difficulty of the surgery.

[0007] Patent CN202022259157.X provides an adjustable valve delivery system, including a valve prosthesis, a control handle, an inner tube and an outer sheath connected to the control handle, and an adjustment mechanism and a control release device connected between the inner tube and the outer sheath. The control handle is connected to the adjustment mechanism, one end of the valve prosthesis is connected to one end of the adjustment mechanism, and the control release device restricts the radial expansion of the other end of the valve prosthesis. Operating the control handle rotates the adjustment mechanism, which in turn rotates the valve prosthesis. During this process, the outer sheath remains stationary, and the control release device rotates with the valve prosthesis and remains relatively stationary. The technical drawback of this solution is that a control wire is also provided inside the hollow tube. The control wire passes through a limiting member, allowing the proximal end of the valve prosthesis to be detachably connected to the control wire for controllable release of the proximal end of the valve prosthesis. However, the implantation device passes through a perforated structure, which can easily bend the control wire, requiring significant force to remove it, and even posing a risk of failure to remove it, resulting in release failure.

[0008] In summary, the existing release devices have complex or unreasonable structural designs, resulting in a high error rate during disassembly operations and situations where the release component cannot be properly removed or release is difficult. Summary of the Invention

[0009] This application is made in view of the above and other ideas.

[0010] One of the purposes of this application is to overcome the shortcomings of the prior art, and to address the situation where the release device has a complex or unreasonable structural design, resulting in the inability to properly extract the release component or difficulty in release, by providing an implantable device delivery system with an elastic release device.

[0011] According to another aspect of this application, an implantable device delivery system with an elastic release device is provided, comprising: an implantable device, an elastic release device, and a delivery catheter; the elastic release device includes a connecting structure, an elastic element, a rigid element, and a release element; the connecting structure is connected to the delivery catheter; one end of the elastic element is fixed to the connecting structure, and the other end is connected to the rigid element; furthermore, the distal end of the release element is fixedly connected to the elastic element; during pre-installation, the connecting structure and the implantable device are circumferentially compressed, the proximal end of the implantable device passes through the connecting structure, and the rigid element passes through the proximal end of the implantable device to form a detachable connection; when releasing the implantable device, pulling the release element causes the elastic element to elastically deform under the pull of the release element and move towards the proximal end, the elastic element simultaneously drives the rigid element to move towards the proximal end, and the rigid element gradually disengages from the implantable device to complete the release of the implantable device.

[0012] According to one embodiment, the connection structure includes a connecting seat, a supporting member, and a connecting ring, and the proximal end of the implantable device is provided with a control element and a release port.

[0013] According to one embodiment, during pre-installation, the control member passes through the connecting ring, and the rigid member passes through the release hole to form a detachable connection.

[0014] According to one embodiment, the elastic element is fixedly connected to the connecting seat / support member / connecting ring.

[0015] According to one embodiment, the travel distance from the connection point between the implantable device and the rigid member to the distal end of the rigid member is less than the maximum compression travel distance of the elastic member. The purpose of this design is to ensure that the rigid member can be smoothly disengaged from the proximal end of the implantable device.

[0016] According to one embodiment, the connecting structure, the elastic element, and the rigid element are integrally formed. The purpose of this design is to eliminate the need for assembling parts and improve the overall structural integrity.

[0017] According to one embodiment, the connecting ring is parallel to the center line of the connecting structure in its natural state.

[0018] According to one embodiment, the connecting structure, the elastic element, and the rigid element are fixedly connected.

[0019] According to one embodiment, the connecting structure is integrally formed with the elastic element, and the elastic element and the rigid element are fixedly connected.

[0020] According to one embodiment, the elastic element is in the shape of an "S" or a wave or a spring.

[0021] According to one embodiment, the elastic element has shape memory properties, and the elastic element is a shape memory alloy metal.

[0022] According to one embodiment, in its natural state, the elastic element is parallel to the centerline of the connecting structure; and the elastic element forms an angle α with the supporting member / connecting ring, where 5°≤α≤45°.

[0023] According to one embodiment, after the distal end of the implantable device is released, the proximal portion of the implantable device expands, and the control element drives the elastic element to approach or abut against the support member / connecting ring, at which time 0°≤α≤30°.

[0024] According to one embodiment, the support member is disposed at the distal end of the connecting seat, and the connecting ring is disposed at the distal end of the support member; furthermore, the support member has shape memory properties, and in its natural state, the support member forms an angle β with the center line of the connecting seat, where 0°≤β≤80°.

[0025] According to one embodiment, the connecting seat has a track inside, and the release member passes through the track and is connected to the elastic member.

[0026] According to one embodiment, the elastic release device is provided with a plurality of the support members; and the number of the support members is consistent with the number of the connecting ring, the control member, the release hole, the elastic member, and the rigid member.

[0027] According to one embodiment, the elastic device includes six elastic elements.

[0028] According to one embodiment, the release member is a flexible member, and the distal end of the release member is fixed to the distal portion of the elastic member.

[0029] According to one embodiment, the disassembly control element is a wire or a rod.

[0030] According to one embodiment, the implantable device further includes a positioning element that enters the valve sinus to fix the implantable device.

[0031] According to one embodiment, the delivery conduit includes an inner tube and a control tube, the control tube being connected to the connector.

[0032] According to one embodiment, the delivery catheter further includes a retraction sheath for releasing the distal end of the implanted device.

[0033] According to one embodiment, the connector has a channel in the middle, and the inner tube passes through the channel.

[0034] Compared with the prior art, the advantages of the technical solution of this application include at least the following: 1. In existing patents, a limiting member is provided on the proximal end of the valve prosthesis. The limiting member extends through the perforated structure, and the control wire passes through the limiting member, making the proximal end of the valve prosthesis detachably connected to the control wire. However, this design has the following drawbacks: due to the shape memory of the implanted device's outward expansion, the limiting member exerts an outward expansion force, causing the control wire to be squeezed between the perforated structure and the limiting member. In addition, the diameter of the control wire is limited by the limited space within the lumen. If the control wire is too thin, its rigidity is insufficient, making it prone to bending. This results in a large force required to remove the control wire or even prevents it from being removed, which is detrimental to clinical surgical operations. The technical solution of this application avoids the excessive pressure on the control wire caused by the outward expansion of the implanted device, thus preventing the control wire from being squeezed. To address the issue of wire bending, this solution employs an elastic release device. This device includes a connecting structure, an elastic element, a rigid element, and a release element. The elastic element is connected to the connecting structure and the rigid element at both ends, respectively. The rigid element passes through the proximal end of the implanted device to form a detachable connection. Because the elastic element can undergo elastic deformation, when the release element is pulled towards the proximal end, the elastic element can simultaneously drive the rigid element to move towards the proximal end under its action. Thus, the rigid element can gradually detach from the implanted device. During the release process of the implanted device, since the rigid element will not bend due to the expansion force of the implanted device, the force required to pull the rigid element out of the implanted device is relatively small. Pulling the release element to compress the elastic element is sufficient to pull the rigid element out. The entire release process is simple, labor-saving, and convenient to operate, with a very high success rate of detachment, which has significant clinical implications.

[0035] 2. According to a concept of this application, the connecting structure, elastic element and rigid element are integrally formed, which solves the problem of difficult wire pulling without adding parts or components. Moreover, forming a detachable connection only requires two steps. First, pull the elastic element to compress until the rigid element is aligned with the release hole of the implanted device. Second, release the elastic element, and the rigid element will pass through the release hole, thereby forming a detachable connection. The design is ingenious, and the operation of forming and disconnecting the connection is very simple, which has strong practicality.

[0036] 3. According to another concept of this application, both the elastic element and the supporting member have shape memory properties. During the release of the implanted device, the elastic element and the supporting member can expand radially, so that the proximal end of the implanted device can be partially expanded, which alleviates the radial expansion force of the implanted device, reduces the impact on the heart when the implanted device is released, facilitates the stable release of the implanted device, and improves the success rate of stable release of the implanted device.

[0037] The embodiments of this application can achieve other advantageous technical effects not listed one by one, which may be partially described below; and these other technical effects can be expected and understood by those skilled in the art after reading this application. Attached Figure Description

[0038] The above-described features and advantages of these embodiments, as well as other features and advantages, and the ways in which they are implemented, will become more apparent from the following description in conjunction with the accompanying drawings; and embodiments of this application can be better understood, in which: Figures 1a-1c This is a schematic diagram of the overall structure of the implantable device delivery system and a schematic diagram of the elastic release device of the present invention.

[0039] Figures 2a-2g This is a structural diagram and positional layout diagram of the connecting structure, elastic element, rigid element and release element of the present invention.

[0040] Figures 3a-3g This is a schematic diagram illustrating the release process of the implantable device of the present invention.

[0041] Figures 4a-4f This is another embodiment of the elastic release device of the present invention.

[0042] The features represented by the numbers in the attached diagram are as follows: 1-Elastic release device, 11-Connecting structure, 111-Connecting seat, 1111-Channel, 1112-Railway, 112-Supporting component, 113-Connecting ring, 12-Elastic component, 13-Rigid component, 14-Release component, 2-Implantable device, 21-Control component, 22-Release port, 23-Positioning component, 3-Delivery catheter, 31-Inner tube, 32-Control tube, 33-Retractable sheath. Detailed Implementation

[0043] The details of one or more embodiments of this application will be set forth in the following description of the accompanying drawings and specific embodiments. Other features, objects, and advantages of this application will become clear from these descriptions, drawings, and claims.

[0044] It should be understood that the illustrated and described embodiments are not limited in application to the details of the construction and arrangement of the components set forth in the following description or illustrated in the accompanying drawings. The illustrated embodiments may be other embodiments; and can be implemented or performed in various ways. The examples are provided by way of explanation rather than limitation of the disclosed embodiments. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of this application without departing from the scope or spirit of this disclosure. For example, features illustrated or described as part of one embodiment may be used with another embodiment to still produce another embodiment. Therefore, this disclosure covers such modifications and variations that fall within the scope of the appended claims and their equivalents.

[0045] Similarly, it is understood that the phrases and terms used in this document are for descriptive purposes and should not be considered restrictive. The use of “including,” “contains,” or “has,” and their variations, in this document is intended to include, in an open-ended manner, the items listed thereafter, their equivalents, and any additional items.

[0046] The present application will now be described in more detail with reference to various embodiments and examples of several aspects thereof.

[0047] In this application, the terms "proximal" or "proximal" refer to the end or side closer to the surgeon, and "distal" or "distal" refer to the end or side farther from the surgeon.

[0048] In the existing technology, the disassembly and connection structure between the delivery system and the valve clip is relatively complex and has high requirements for assembly process. The complex structure further makes the operation process cumbersome and has a high error rate during disassembly. At the same time, the valve clip is designed to be large and the space optimization is not sufficient, which leads to many difficulties in intravascular delivery.

[0049] One of the objectives of the embodiments described below is to address the aforementioned deficiencies, as well as other problems.

[0050] Example 1 like Figures 1a-1cThe illustration shows an implantable device delivery system with an elastic release device 1 according to an embodiment of this application, including: an implantable device 2, an elastic release device 1, and a delivery conduit 3; the elastic release device 1 includes a connecting structure 11, an elastic element 12, a rigid element 13, and a release element 14. The connecting structure 11 is connected to the delivery conduit 3. One end of the elastic element 12 is fixed to the connecting structure 11, and the other end is connected to the rigid element 13. Furthermore, the distal end of the release element 14 is fixedly connected to the elastic element 12. During pre-installation, the connecting structure 11 and the implantable device 2 are circumferentially compressed. The proximal end of the implantable device 2 passes through the connecting structure 11, and the rigid element 13 passes through the proximal end of the implantable device 2 to form a detachable connection. When releasing the implantable device 2, pulling the release element 14 causes the elastic element 12 to elastically deform and move towards the proximal end under the pull of the release element 14. At the same time, the elastic element 12 drives the rigid element 13 to move towards the proximal end, and the rigid element 13 gradually disengages from the implantable device 2 to complete the release of the implantable device 2.

[0051] In this first embodiment, the connecting structure 11 includes a connecting seat 111, a supporting member 112, and a connecting ring 113. The proximal end of the implantable device 2 is provided with a control member 21 and a release hole 22. During pre-installation, the control member 21 passes through the connecting ring 113, and the rigid member 13 passes through the release hole 22 to form a detachable connection. Figure 2a As shown.

[0052] In this first embodiment, the travel distance from the connection point between the implantable device 2 and the rigid member 13 to the distal end of the rigid member 13 is less than the maximum compression travel distance of the elastic member 12. The purpose of this design is to ensure that the rigid member 13 can be smoothly disengaged from the proximal end of the implantable device 2.

[0053] In this first embodiment, the connecting structure 11, the elastic element 12, and the rigid element 13 are integrally formed. The purpose of this design is to eliminate the need for assembling parts and improve the overall structural integrity.

[0054] In this first embodiment, the elastic element 12 is S-shaped, wave-shaped, or spring-shaped, such as... Figure 2b and 2c As shown.

[0055] In this first embodiment, under natural conditions, the elastic element 12 is parallel to the centerline of the connecting structure 11; and the elastic element 12 forms an angle α with the connecting ring 113, where 5°≤α≤45°. Figure 2d As shown.

[0056] In this first embodiment, after the distal end of the implantable device 2 is released, the proximal portion of the implantable device 2 expands, and the control element 21 drives the elastic element 12 to approach or abut against the connecting ring 113. At this time, 0°≤α≤30°, as shown. Figure 2e As shown.

[0057] In this first embodiment, the support member 112 is disposed at the far end of the connecting seat 111, and the connecting ring 113 is disposed at the far end of the support member 112; furthermore, the support member 112 has shape memory properties, and in its natural state, the support member 112 forms an angle β with the center line of the connecting seat 111, where 0°≤β≤80°.

[0058] In this first embodiment, the connecting seat 111 has a track 1112 inside, and the release member 14 passes through the track 1112 and is connected to the elastic member 12, such as... Figure 2f and 2g As shown.

[0059] In this first embodiment, the elastic release device 1 is provided with six support members 112; and the number of support members 112 is the same as the number of connecting ring 113, control member 21, release hole 22, elastic member 12 and rigid member 13.

[0060] In this first embodiment, the release member 14 is a flexible member, and the distal end of the release member 14 is fixed to the distal end portion of the elastic member 12.

[0061] In this first embodiment, the elastic element 12 is fixedly connected to the connecting ring 113.

[0062] In this first embodiment, the implantable device 2 further includes a positioning element 23, which enters the valve sinus to fix the implantable device 2.

[0063] In this first embodiment, the delivery conduit 3 includes an inner tube 31 and a control tube 32, and the control tube 32 is connected to the connecting seat 111.

[0064] In this first embodiment, the connecting seat 111 has a channel 1111 in the middle, and the inner tube 31 passes through the channel 1111.

[0065] In this embodiment, the delivery catheter 3 further includes a retraction sheath 33, which is used to release the distal end of the implantation device 2.

[0066] The operation process of releasing the implantable device 2 in an exemplary implantable device delivery system with an elastic release device in this embodiment is as follows: 1. Rotating the control tube 32 causes the elastic release device 1 to rotate, thereby adjusting the circumferential position of the positioning member 23, such as... Figures 3a-3d As shown; 2. Operate the retractable sheath 33 to release the distal end of the implanted device 2, as follows. Figure 3e As shown; 3. Pulling the release member 14 causes the elastic member 12 to elastically deform and move proximally under the pull of the release member 14. Simultaneously, the elastic member 12 drives the rigid member 13 to move proximally, and the rigid member 13 gradually disengages from the implanted device 2 to complete the release of the implanted device 2. Figure 3f and 3g As shown.

[0067] Example 2 Example 2 is largely the same as Example 1, except that the fixed connection position of the elastic element in the elastic release device 1 is different in this example.

[0068] An apparatus for releasing an implanted device according to an embodiment of this application includes: an implanted device 2, an elastic release device 1, and a delivery catheter 3, such as... Figure 1a and 4a As shown; the elastic release device 1 includes a connecting structure 11, an elastic element 12, a rigid element 13, and a release element 14. The connecting structure 11 is connected to the delivery conduit 3. One end of the elastic element 12 is fixed to the connecting structure 11, and the other end is connected to the rigid element 13. Furthermore, the distal end of the release element 14 is fixedly connected to the elastic element 12. During pre-installation, the connecting structure 11 and the implantable device 2 are circumferentially compressed. The proximal end of the implantable device 2 passes through the connecting structure 11, and the rigid element 13 passes through the proximal end of the implantable device 2 to form a detachable connection. When releasing the implantable device 2, pulling the release element 14 causes the elastic element 12 to undergo elastic deformation under the pull of the release element 14 and move towards the proximal end. At the same time, the elastic element 12 drives the rigid element 13 to move towards the proximal end. The rigid element 13 gradually disengages from the implantable device 2 to complete the release of the implantable device 2.

[0069] In this second embodiment, the connecting structure 11 includes a connecting seat 111, a supporting member 112, and a connecting ring 113. The proximal end of the implantable device 2 is provided with a control member 21 and a release hole 22. During pre-installation, the control member 21 passes through the connecting ring 113, and the rigid member 13 passes through the release hole 22 to form a detachable connection. Figures 4d to 4f As shown.

[0070] In this second embodiment, the elastic element 12 is fixedly connected to the connecting seat 111, such as... Figure 4bAs shown, the purpose of this design is that the large gap between the connecting seat 111 and the connecting ring 113 can provide a sufficiently large deformation stroke for the elastic element 12.

[0071] In this second embodiment, the support member 112 is triangular, and the hollow area in the middle of the support member 112 constitutes the elastic element 12 and the rigid element 13. That is, the connecting seat 111, the support member 112, the connecting ring 113, the elastic element 12 and the rigid element 13 are integrally formed. The advantage of this design is that the elastic release device 1 has high integrity, does not require assembly or splicing, improves installation efficiency, and avoids many problems encountered when loading and unloading the implantable device 2.

[0072] In this second embodiment, under natural conditions, the elastic element 12 is parallel to the centerline of the connecting structure 11; and the elastic element 12 forms an angle α with the supporting member 112, where 5°≤α≤45°. Figure 4c As shown.

[0073] In this second embodiment, after the distal end of the implantable device 2 is released, the proximal portion of the implantable device 2 expands, and the control element 21 drives the elastic element 12 to approach or abut against the support member 112. At this time, 0°≤α≤30°, as shown. Figure 4f As shown.

[0074] In this second embodiment, the support member 112 is disposed at the far end of the connecting seat 111, and the connecting ring 113 is disposed at the far end of the support member 112; furthermore, the support member 112 has shape memory properties, and in its natural state, the support member 112 forms an angle β with the center line of the connecting seat 111, where 0°≤β≤80°.

[0075] In this regard, the relevant construction and concept of Embodiment 2 are similar to those of Embodiment 1, and therefore will not be described again here.

[0076] The foregoing description of several embodiments of this application has been provided for illustrative purposes. This foregoing description is not intended to be exhaustive, nor is it intended to limit the application to the precise configurations, constructions, and / or steps disclosed; obviously, many modifications and variations can be made in light of the teachings above. The scope of the invention and all its equivalents are intended to be defined by the appended claims.

Claims

1. An implantable device delivery system with an elastic release device, comprising: An implantable device, an elastic release device, and a delivery catheter; characterized in that: the elastic release device includes a connecting structure, an elastic element, a rigid element, and a release element; the connecting structure is connected to the delivery catheter; one end of the elastic element is fixed to the connecting structure, and the other end is directly connected to the rigid element; the rigid element passes through the proximal end of the implantable device during pre-installation; and the distal end of the release element is fixedly connected to the elastic element; the connecting structure includes a connecting seat, a supporting member, and a connecting ring; the proximal end of the implantable device is provided with a control element and a release hole; and the elastic element has shape memory properties. In its natural state, the elastic element is parallel to the centerline of the connecting structure; and the elastic element forms an angle α with the supporting member / connecting ring, where 5°≤α≤45°. After the distal end of the implanted device is released, the proximal portion of the implanted device expands, and the control element drives the elastic element to approach or abut against the supporting member / connecting ring, where 0°≤α≤30°. The elastic release device is provided with multiple supporting members; and the number of supporting members is consistent with the number of the connecting ring, the control element, the release hole, the elastic element, and the rigid element.

2. The implantable device delivery system with an elastic release device according to claim 1, characterized in that: During pre-installation, the control component passes through the connecting ring, and the rigid component passes through the release hole to form a detachable connection.

3. The implantable device delivery system with an elastic release device according to claim 1, characterized in that: During pre-installation, the connecting structure and the implantable device are circumferentially compressed, with the proximal end of the implantable device passing through the connecting structure and the rigid member passing through the proximal end of the implantable device to form a detachable connection. When releasing the implantable device, pulling the release member causes the elastic member to undergo elastic deformation under the pull of the release member and move towards the proximal end. At the same time, the elastic member drives the rigid member to move towards the proximal end, and the rigid member gradually separates from the implantable device to complete the release of the implantable device.

4. The implantable device delivery system with an elastic release device according to claim 1, characterized in that: The travel distance from the connection point between the implanted device and the rigid member to the distal end of the rigid member is less than the maximum compression stroke of the elastic member.

5. The implantable device delivery system with an elastic release device according to claim 1, characterized in that: The connecting structure, the elastic element, and the rigid element are integrally formed.

6. The implantable device delivery system with an elastic release device according to claim 1, characterized in that: The elastic element is S-shaped.

7. The implantable device delivery system with an elastic release device according to claim 1, characterized in that: The elastic element has a wave-like shape.

8. The implantable device delivery system with an elastic release device according to claim 1, characterized in that: The elastic element is shaped like a spring.

9. The implantable device delivery system with an elastic release device according to claim 1, characterized in that: The supporting member is disposed at the far end of the connecting seat, and the connecting ring is disposed at the far end of the supporting member; furthermore, the supporting member has shape memory, and in its natural state, the supporting member forms an angle β with the center line of the connecting seat, where 0°≤β≤80°.

10. An implantable device delivery system with an elastic release device according to claim 1, characterized in that: The connecting seat has a track inside, and the release member passes through the track and connects to the elastic member.

11. An implantable device delivery system with an elastic release device according to claim 1, characterized in that: The release element is a flexible element, and the distal end of the release element is fixed to the distal end portion of the elastic element.

12. The implantable device delivery system with an elastic release device according to claim 1, characterized in that: The elastic element is fixedly connected to the connecting seat / support member / connecting ring.

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