Artificial valve prosthesis delivery device

Abstract

The present application belongs to the technical field of interventional medical devices, and provides an artificial valve prosthesis delivery device, including a handheld portion, a valve prosthesis accommodating component connected to the handheld portion, the valve prosthesis accommodating component including a socketable distal end portion and a proximal end portion, and a valve carrier arranged in an accommodating space formed after the distal end portion and the proximal end portion are socketed; the handheld portion is provided with a first driving mechanism for adjusting the relative position distance between the distal end portion and the valve carrier, and a second driving mechanism for adjusting the relative position distance between the proximal end portion and the valve carrier. In this solution, when an artificial heart valve is implanted, relative movement can exist between the valve carrier and the distal end portion and the proximal end portion on the delivery device, so that the valve carrier can be easily adjusted when releasing the artificial mitral valve, thereby reducing the difficulty of the operation.

Description

Technical Field

[0001] The present application belongs to the technical field of interventional medical devices, and specifically, relates to an artificial valve prosthesis delivery device. Background Art

[0002] The heart is a very important organ in the human body, providing power for the human body's blood circulation. The heart is divided into two parts, each part contains a ventricle and atrium. The ventricles and atria are separated by the ventricular septum and atrial septum. There are valves between the atria, chambers, and arteries to prevent blood backflow. The valve located between the left atrium and the left ventricle is the mitral valve. When any structure of the mitral valve has problems, it will cause valve lesions.

[0003] Mitral regurgitation is the most common mitral valve disease. An artificial mitral valve can be introduced into the patient's body through a catheter, that is, the mitral valve is placed through a minimally invasive interventional surgery. The surgery does not require a thoracotomy, has little trauma, and allows for quick recovery after surgery. At present, the process of implanting an interventional artificial heart valve into the body usually relies on a certain delivery device to deliver the interventional artificial heart valve to a predetermined location for release. When releasing an artificial heart valve, the existing delivery device usually uses a method of withdrawing the sheath tube loaded with the artificial heart valve so that the artificial heart valve is gradually exposed and opened. In other words, the artificial heart valve is released from one side of the sheath tube. This unilateral release of the artificial heart valve usually requires a relatively long distance of movement when the size of the artificial heart valve is constant, and the longer the moving distance, the higher the risk of the operation. Therefore, it is necessary to improve the delivery system. Summary of the invention

[0004] The technical problem to be solved by the present application is to provide an artificial valve prosthesis delivery device that can achieve bidirectional release of the artificial valve prosthesis.

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

[0006] An artificial valve prosthesis delivery device comprises a handheld portion, a valve prosthesis accommodating component connected to the handheld portion, the valve prosthesis accommodating component comprising a sleeveable distal end portion and a proximal end portion, and a valve carrier arranged in an accommodating space formed by sleeve-connecting the distal end portion and the proximal end portion;

[0007] The handheld portion is provided with a first driving mechanism for adjusting the relative position distance between the distal portion and the valve carrier, and a second driving mechanism for adjusting the relative position distance between the proximal portion and the valve carrier.

[0008] In the present application, the first driving mechanism can be used to adjust the relative position distance between the distal end and the valve carrier; the second driving mechanism can be used to adjust the relative position distance between the proximal end and the valve carrier. When the delivery device is used to implant an artificial heart valve, the valve carrier and the distal end and the proximal end on the delivery device can move relative to each other, which facilitates the adjustable operation of the bilateral position distance of the valve carrier when releasing the artificial mitral valve, and helps reduce the difficulty and risk of the operation.

[0009] Preferably, the handheld portion is connected to the valve prosthesis receiving assembly via a sliding catheter set, wherein the sliding catheter set includes a first catheter, a second catheter extending inside the first catheter and penetrating the first catheter, and a third catheter extending inside the second catheter and penetrating the second catheter;

[0010] The distal end of the first catheter is connected to the proximal portion, the distal end of the second catheter is connected to the valve carrier, and the distal end of the third catheter is connected to the distal portion.

[0011] In the above implementation process, the sliding catheter group is set up to facilitate the transmission connection between the hand-held part and the valve prosthesis accommodating assembly; at this time, the relative position distance between the proximal part, the valve carrier and the distal part can be regulated by the relative sliding movement between the first catheter, the second catheter and the third catheter.

[0012] Preferably, the first driving mechanism comprises a first sliding block and a first sleeve for controlling the sliding of the first sliding block;

[0013] The first sliding block is disposed in the handheld portion, and the proximal end of the third catheter is connected to the first sliding block.

[0014] In the above implementation process, the sliding movement of the first sliding block can be controlled by the first sleeve, and the sliding of the first sliding block drives the third catheter to move, thereby driving the movement of the distal end portion.

[0015] Preferably, the second driving mechanism comprises a second sliding block and a second sleeve for controlling the sliding of the second sliding block;

[0016] The second sliding block is disposed in the handheld portion, and the proximal end of the first catheter is connected to the second sliding block.

[0017] In the above implementation process, the sliding movement of the second sliding block can be controlled by the second sleeve, and the sliding of the second sliding block can drive the first catheter to move, thereby driving the movement of the proximal portion.

[0018] Preferably, the handheld part comprises a main cylinder, and the main cylinder is provided with a first slide groove for mounting the first sliding block and a second slide groove for mounting the second sliding block;

[0019] The proximal end of the second conduit is connected to the main cylinder, and the connection between the second conduit and the main cylinder is located between the first slide groove and the second slide groove.

[0020] In the above implementation process, by providing the first sliding groove and the second sliding groove, the coordination of the first sliding block and the second sliding block during sliding motion can be improved.

[0021] Preferably, the first sliding block and the second sliding block are both provided with a threaded connection portion, and the threaded connection portion protrudes out of the first sliding groove and the second sliding groove respectively;

[0022] The first sleeve and the second sleeve are both rotatably disposed outside the main sleeve, and matching threads connected to the threaded connection portion are disposed inside the first sleeve and the second sleeve.

[0023] Preferably, the handheld part is provided with a third driving mechanism, and the third driving mechanism comprises a mounting sleeve and an adjusting sleeve;

[0024] The distal end of the main cylinder body protrudes into the installation cylinder sleeve, and the adjustment cylinder sleeve is used to adjust the relative position distance between the main cylinder body and the installation cylinder sleeve.

[0025] In the above implementation process, the movement of the main cylinder can be controlled by the adjusting sleeve, and the synchronous movement of the first sliding block, the main cylinder and the second sliding block can be achieved through the relative movement between the main cylinder and the mounting sleeve, thereby driving the synchronous movement of the proximal end, the valve carrier and the distal end.

[0026] Preferably, one end of the adjusting sleeve is movably connected to the installing sleeve, and the adjusting sleeve can rotate relative to the installing sleeve;

[0027] The distal end of the main cylinder body protrudes into the installation cylinder sleeve and the adjustment cylinder sleeve, the inner side surface of the adjustment cylinder sleeve and the outer side surface of the main cylinder body are both provided with threaded structures, and the main cylinder body is threadedly connected with the adjustment cylinder sleeve.

[0028] Preferably, it comprises a guide tube, the proximal end of which is connected to the installation sleeve;

[0029] The valve prosthesis accommodating component can partially enter the guide tube slidably under the drive of the third driving mechanism.

[0030] In the above implementation process, the guide tube is provided to facilitate improving the coordination of the valve prosthesis accommodating component during movement.

[0031] Preferably, a guide cone surface is provided at the distal end of the distal portion, and a first developing groove is provided on the guide cone surface.

[0032] Preferably, it comprises a plurality of second developing grooves, which are arranged on the outer peripheral surface of the distal end portion around the axis of the distal end portion;

[0033] The second developing tank is disposed at a proximal end of the distal end portion.

[0034] In the above implementation process, by setting up the first developing tank and the second developing tank, when used in conjunction with ultrasonic developing equipment, the current position of the distal end portion can be fed back more clearly and accurately, so that the operator can judge the valve release position. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] 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.

[0036] Figure 1 It is a schematic diagram of the three-dimensional structure of the conveying device of the present application.

[0037] Figure 2 This is a schematic cross-sectional view of the conveying device of the present application.

[0038] Figure 3 This is a schematic diagram of the connection structure between the sliding catheter assembly and the valve prosthesis accommodating assembly of the present application.

[0039] Figure 4 This is a schematic cross-sectional view of the valve prosthesis housing assembly of the present application.

[0040] Figure 5 It is a schematic diagram of the three-dimensional structure of the distal end of the present application.

[0041] Figure 6 It is a side view structural schematic diagram of the distal end of the present application.

[0042] Figure 7 This is a schematic diagram of the installation structure of the sliding catheter group of this application.

[0043] Figure 8 It is a schematic diagram of the three-dimensional structure of the handheld part of this application.

[0044] Fig. 9 This is a schematic cross-sectional view of the handheld portion of the present application.

[0045] Fig.10 This is a schematic diagram of the installation structure of the sliding block on the main cylinder of this application.

[0046] Fig.11 This is a schematic diagram of the three-dimensional structure of the sliding block of this application.

[0047] Fig.12 This is a schematic diagram comparing the release states of the delivery device of the present application.

[0048] Marking Description:

[0049] 1-valve prosthesis accommodating component, 10-accommodating space, 11-distal end portion, 111-guiding cone surface, 112-first developing groove, 113-second developing groove, 12-valve carrier, 13-proximal end portion;

[0050] 2-sliding catheter set, 21-first catheter, 22-second catheter, 23-third catheter;

[0051] 3-hand-held part, 30-main cylinder, 301-first slide groove, 302-second slide groove, 303-threaded structure; 31-first driving mechanism, 311-first sliding block, 312-first cylinder sleeve; 32-second driving mechanism, 321-second sliding block, 322-second cylinder sleeve; 33-third driving mechanism, 331-installing cylinder sleeve, 332-adjusting cylinder sleeve; 34-threaded connection part;

[0052] 4-Guide cylinder. DETAILED DESCRIPTION

[0053] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. In the following description, many specific details are set forth in order to fully understand the present invention, and the embodiments described are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the art without making creative work are within the scope of protection of the present invention.

[0054] It should be noted that, unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. Similar reference numerals and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. At the same time, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance. The terms "distal end" and "proximal end" are mainly used as the main reference by the operator, that is, the end close to the operator or away from the patient can be considered as the "proximal end", and the end away from the operator or close to the patient can be considered as the "distal end".

[0055] like Figure 1-12 As shown, in this embodiment, an artificial valve prosthesis delivery device is provided, including a valve prosthesis accommodating component 1, a sliding catheter group 2 and a hand-held part 3, and the valve prosthesis accommodating component 1 and the hand-held part 3 are transmission-connected through the sliding catheter group 2.

[0056] Among them, Figure 3-6 As shown, the valve prosthesis accommodating component 1 in this embodiment includes a distal portion 11, a valve carrier 12 and a proximal portion 13. The proximal end of the distal portion 11 and the distal end of the proximal portion 13 can be mutually socketed, and an accommodating space 10 is formed after the distal portion 11 and the proximal portion 13 are socketed. Before the artificial valve prosthesis is released, the valve carrier 12 is located in the formed accommodating space 10.

[0057] As a preferred solution, in this embodiment, a guide cone surface 111 is provided at the distal end of the distal portion 11, and a first developing groove 112 is provided on the guide cone surface 111. Figure 5 , Figure 6 A plurality of second developing grooves 113 are provided at the proximal end of the distal portion 11, and a plurality of the second developing grooves 113 are provided on the outer peripheral surface of the distal portion 11 around the axis of the distal portion 11, as shown Figure 5 , Figure 6 By providing the first developing tank 112 and the second developing tank 113, when used in conjunction with an ultrasonic developing device, the current position of the distal end portion 11 can be more clearly and accurately fed back, so that the operator can judge the valve release position.

[0058] Furthermore, if Figure 7As shown, the sliding catheter group 2 includes a first catheter 21, a second catheter 22 extending in the first catheter 21 and penetrating the first catheter 21, and a third catheter 23 extending in the second catheter 22 and penetrating the second catheter 22. The distal end of the first catheter 21 is connected to the proximal portion 13, the distal end of the second catheter 22 is connected to the valve carrier 12, and the distal end of the third catheter 23 is connected to the distal portion 11. At this time, the relative position distance between the proximal portion 13, the valve carrier 12 and the distal portion 11 can be regulated by the relative sliding movement between the first catheter 21, the second catheter 22 and the third catheter 23.

[0059] In addition, if Figure 8-11 As shown, in this embodiment, the handheld part 3 includes a main cylinder 30 , and a first driving mechanism 31 , a second driving mechanism 32 and a third driving mechanism 33 are arranged on the main cylinder 30 .

[0060] As a preferred solution, the first driving mechanism 31 includes a first sliding block 311 and a first sleeve 312, and a first slide groove 301 is provided on the main cylinder 30. In this embodiment, the first slide groove 301 penetrates from both sides of the main cylinder 30, the first sliding block 311 is embedded in the first slide groove 301, and the first sliding block 311 can slide relative to the first slide groove 301. By providing the first slide groove 301, the coordination of the first sliding block 311 during sliding can be better.

[0061] Further, in this embodiment, threaded connection parts 34 are provided on both sides of the first sliding block 311, and the threaded connection parts 34 are protruded from both sides of the first slide groove 301. The first sleeve 312 is sleeved outside the main cylinder 30, and the first sleeve 312 can rotate relative to the main cylinder 30. A matching thread connected to the threaded connection part 34 is provided on the inner side of the first sleeve 312, so that the sliding movement of the first sliding block 311 in the first slide groove 301 can be controlled by controlling the rotation of the first sleeve 312.

[0062] Furthermore, the proximal end of the third catheter 23 is connected to the first sliding block 311. At this time, the sliding of the first sliding block 311 can drive the third catheter 23 to move, and then drive the movement of the distal end 11, so as to adjust the relative position distance between the distal end 11 and the valve carrier 12.

[0063] As a preferred solution, the second driving mechanism 32 includes a second sliding block 321 and a second sleeve 322, and a second slide groove 302 is provided on the main cylinder 30. In this embodiment, the second slide groove 302 is also provided to penetrate from both sides of the main cylinder 30, the second sliding block 321 is embedded in the second slide groove 302, and the second sliding block 321 can slide relative to the second slide groove 302. By providing the second slide groove 302, the coordination of the second sliding block 321 during sliding can be better.

[0064] Furthermore, in this embodiment, the threaded connection parts 34 are also provided on both sides of the second sliding block 321, and the threaded connection parts 34 are protruded from both sides of the second chute 302. The second sleeve 322 is sleeved outside the main cylinder 30, and the second sleeve 322 can rotate relative to the main cylinder 30. The matching thread is also provided on the inner side of the second sleeve 322, and the matching thread provided on the second sleeve 322 is connected with the threaded connection parts 34 provided on the second sliding block 321, so that the sliding movement of the second sliding block 321 in the second chute 302 can be controlled by controlling the rotation of the second sleeve 322.

[0065] Furthermore, the proximal end of the first catheter 21 is connected to the second sliding block 321. At this time, the sliding of the second sliding block 321 can drive the movement of the first catheter 21, and then drive the movement of the proximal end 13, so as to adjust the relative position distance between the proximal end 13 and the valve carrier 12.

[0066] As a preferred solution, the proximal end of the second conduit 22 is connected to the main cylinder 30 , and the connection between the second conduit 22 and the main cylinder 30 is located between the first slide groove 301 and the second slide groove 302 .

[0067] In this embodiment, the first driving mechanism 31 is provided to adjust the relative position distance between the distal end portion 11 and the valve carrier 12. Fig.12 By setting the second driving mechanism 32, the relative position distance between the proximal portion 13 and the valve carrier 12 can be adjusted, such as Fig.12 When the delivery device is used for implanting an artificial heart valve, the valve carrier 12 and the distal end portion 11 and the proximal end portion 13 on the delivery device can move relative to each other, thereby enabling the valve carrier 12 to adjust the bilateral position distance when releasing an artificial heart valve (such as an artificial mitral valve), thereby reducing the difficulty of the operation.

[0068] As a preferred solution, the third driving mechanism 33 includes a mounting sleeve 331 and an adjusting sleeve 332, one end of the adjusting sleeve 332 is movably connected to the mounting sleeve 331, and the adjusting sleeve 332 can rotate relative to the mounting sleeve 331, and the distal end of the main cylinder 30 protrudes into the mounting sleeve 331 and the adjusting sleeve 332. Figure 8 , Fig. 9 shown.

[0069] Further, in this embodiment, the adjusting sleeve 332 is sleeved outside the main cylinder 30, and a threaded structure 303 is provided on the inner side of the adjusting sleeve 332 and the outer side of the main cylinder 30, and the main cylinder 30 and the adjusting sleeve 332 are connected by threaded transmission through the threaded structure 303. At this time, by controlling the rotation of the adjusting sleeve 332, the relative position distance between the main cylinder 30 and the installation sleeve 331 can be adjusted; and since the first sliding block 311, the second sliding block 321 and the second tube 22 are all arranged on the main cylinder 30, when the main cylinder 30 and the installation sleeve 331 move relative to each other, the proximal portion 13, the valve carrier 12 and the distal portion 11 can be driven to move synchronously, thereby realizing the overall distance adjustment based on the main cylinder 30, so that the use of the conveying device can be more convenient.

[0070] As a preferred solution, a guide tube 4 is further provided in this embodiment, the proximal end of which is connected to the mounting sleeve 331 , and the valve prosthesis accommodating assembly 1 can partially slide into the guide tube 4 under the drive of the third driving mechanism 33 .

[0071] As one application example, when the adjusting sleeve 332 is rotated to move the main sleeve 30 relative to the mounting sleeve 331, the valve prosthesis accommodation component 1 slides entirely in the guide tube 4. When only the second sleeve 322 is rotated to move the proximal portion 13 relative to the distal portion 11 and the valve carrier 12, the relative positions of the distal portion 11 and the valve carrier 12 remain unchanged, while the proximal portion 13 slides in the guide tube 4. The guide tube 4 can improve the coordination of the valve prosthesis accommodation component 1 when it moves.

[0072] The artificial valve prosthesis delivery device provided in this embodiment is used as follows:

[0073] When the conveying device is close to the treatment position but still has a relatively large moving distance, the adjusting sleeve 332 can be rotated to drive the main cylinder 30 to move relative to the installation sleeve 331, so as to drive the entire valve prosthesis accommodating assembly 1 to move relative to the guide tube 4, thereby realizing an overall large-distance adjustment, so that the valve prosthesis accommodating assembly 1 can quickly approach the treatment position; the judgment of the treatment position can be fed back through the coordinated use of the first developing tank 112 and the second developing tank 113 provided on the distal end portion 11 and the ultrasonic developing equipment.

[0074] When the valve prosthesis accommodating assembly 1 is located at a critical position for the operation, the second sleeve 322 is rotated first to drive the proximal portion 13 to move proximally through the first catheter 21, so that the proximal portion 13 is relatively separated from the distal portion 11 to expose part of the artificial heart valve. Since the artificial heart valve is not completely released at this time, there is still a certain position adjustment space, so that the fault tolerance rate during the operation can be higher. Controlling the proximal portion 13 to move toward the proximal direction first is safer than controlling the component to move toward the distal direction first.

[0075] After the operation position is confirmed, the first sleeve 312 is rotated to drive the distal portion 11 to move toward the distal end through the third catheter 23. At this time, the proximal portion 13 and the distal portion 11 are detached from the valve carrier 12, thereby achieving complete release of the artificial heart valve.

[0076] The above description is only a specific implementation mode of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various modifications and changes. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. 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 also be included in the scope of protection of the present application. Therefore, the scope of protection of the present application shall be based on the scope of protection of the claims.

[0077] 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 artificial valve prosthesis delivery device, characterized in that: The device comprises a hand-held part, a valve prosthesis accommodating component and a guide tube, wherein the valve prosthesis accommodating component comprises a sleeveable distal end portion and a proximal end portion, and a valve carrier arranged in an accommodating space formed after the distal end portion and the proximal end portion are sleeved; The handheld part is connected to the valve prosthesis accommodating component through a sliding catheter group, the sliding catheter group includes a first catheter, a second catheter extending in the first catheter and penetrating the first catheter, and a third catheter extending in the second catheter and penetrating the second catheter, the distal end of the first catheter is connected to the proximal end, the distal end of the second catheter is connected to the valve carrier, and the distal end of the third catheter is connected to the distal end; The handheld part is provided with a first driving mechanism for adjusting the relative position distance between the distal end portion and the valve carrier, and a second driving mechanism for adjusting the relative position distance between the proximal end portion and the valve carrier; The first driving mechanism comprises a first sliding block and a first sleeve for controlling the sliding of the first sliding block, the first sliding block is arranged in the handheld part, and the proximal end of the third catheter is connected to the first sliding block; The second driving mechanism comprises a second sliding block and a second sleeve for controlling the sliding of the second sliding block, the second sliding block is arranged in the handheld part, and the proximal end of the first catheter is connected to the second sliding block; The handheld part includes a main cylinder body, and a third driving mechanism is arranged on the handheld part. The third driving mechanism includes a mounting cylinder sleeve and an adjusting cylinder sleeve. The distal end of the main cylinder body protrudes into the mounting cylinder sleeve, and the adjusting cylinder sleeve is used to adjust the relative position distance between the main cylinder body and the mounting cylinder sleeve. The proximal end of the guide tube is connected to the mounting sleeve, and the valve prosthesis accommodating component can slide partially into the guide tube under the drive of the third driving mechanism.

2. The artificial valve prosthesis delivery device according to claim 1, characterized in that: The main cylinder is provided with a first slide groove for mounting the first sliding block and a second slide groove for mounting the second sliding block; The proximal end of the second conduit is connected to the main cylinder, and the connection between the second conduit and the main cylinder is located between the first slide groove and the second slide groove.

3. The artificial valve prosthesis delivery device according to claim 2, characterized in that: The first sliding block and the second sliding block are both provided with a threaded connection portion, and the threaded connection portion protrudes out of the first sliding groove and the second sliding groove respectively; The first sleeve and the second sleeve are both rotatably disposed outside the main sleeve, and matching threads connected to the threaded connection portion are disposed inside the first sleeve and the second sleeve.

4. The artificial valve prosthesis delivery device according to claim 1, characterized in that: One end of the adjusting sleeve is movably connected to the mounting sleeve, and the adjusting sleeve can rotate relative to the mounting sleeve; The distal end of the main cylinder body protrudes into the installation cylinder sleeve and the adjustment cylinder sleeve, the inner side surface of the adjustment cylinder sleeve and the outer side surface of the main cylinder body are both provided with threaded structures, and the main cylinder body is threadedly connected with the adjustment cylinder sleeve.

5. The artificial valve prosthesis delivery device according to claim 1, characterized in that: A guide cone surface is arranged at the distal end of the distal portion, and a first developing groove is arranged on the guide cone surface.

6. The artificial valve prosthesis delivery device according to claim 5, characterized in that: It includes a plurality of second developing grooves, which are arranged on the outer peripheral surface of the distal end portion around the axis of the distal end portion; The second developing tank is disposed at a proximal end of the distal end portion.

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