CN110251273B

CN110251273B - Transcatheter valve delivery preloading system device

Info

Publication number: CN110251273B
Application number: CN201910435409.9A
Authority: CN
Inventors: 潘孔荣; 朱晗诚
Original assignee: Peijia Medical Technology Suzhou Co ltd
Current assignee: Peijia Medical Technology Suzhou Co ltd
Priority date: 2019-05-23
Filing date: 2019-05-23
Publication date: 2022-09-13
Anticipated expiration: 2039-05-23
Also published as: CN110251273A

Abstract

A transcatheter delivery valve pre-loading system device comprising a first housing, a second housing, and a pushing assembly, the second housing coupled to the first housing, the first housing movable relative to the second housing, the second housing having a first compression chamber segment and a second compression chamber segment in communication; one part of the pushing assembly is positioned in the first shell, the other part of the pushing assembly is exposed out of the first shell, the pushing assembly can move relative to the first shell, and the pushing assembly is provided with a hollow channel which is used for conveying the valve; promote the subassembly and be used for promoting the valve to get into first compression chamber section and compress, first casing is used for promoting the valve to get into second compression chamber section and further compresses, and above-mentioned structure is retrencied and is stabilized, has reduced the flow of valve compression operation to make things convenient for personnel's operation, can effectively promote valve transport efficiency, reduce the time of the valve before implanting compressed and reduce the time that the valve was loaded on the spot, promote the success rate that the valve was implanted.

Description

Transcatheter valve delivery pre-loading system device

Technical Field

The application relates to the technical field of medical equipment, in particular to a transcatheter valve delivery preloading system device.

Background

Valves are membranous structures that can be opened and closed inside the organs of humans or some animals. Plays an important role in the blood circulation activity of the heart. When a valve is damaged or diseased, it is necessary to replace the valve.

One current mode of valve loading is: the wet sections are soaked in ice water below 6 ℃, and the wet sections are placed in the ice water by means of loading tools and are operated on site by professional loading personnel. Ice water needs to be prepared in advance during the valve loading work, and hands of a professional loader are all in the ice water within a period of time, so that discomfort can be brought to the hands of an operator. In addition, the operation process is relatively complicated, needs specialized operators with special training to complete, has long valve loading time, and can endanger patients in case of emergency, thereby influencing the operation quality.

Disclosure of Invention

The application provides a valve pre-loading system device through catheter delivery to solve the technical problems of low valve delivery efficiency and low implantation success rate.

In order to solve the above technical problem, one technical solution adopted by the present application is to provide a transcatheter valve preloading system device, including:

a first housing;

the second shell is connected with the first shell, and the first shell can move relative to the second shell, wherein the second shell is provided with a first compression cavity section and a second compression cavity section which are communicated; and

the pushing assembly is provided with a hollow channel used for conveying the valve;

the valve is compressed by the first compression chamber section and the second compression chamber section.

The beneficial effect of this application is: but through setting up relative motion's first casing and second casing, and with valve preloading in the hollow channel of promotion subassembly, make promotion subassembly first casing motion relatively, it is used for promoting the valve and gets into first compression chamber section and compress to promote the subassembly, first casing is used for promoting the valve and gets into second compression chamber section and further compress, above-mentioned structure is retrencied and stable, the flow of valve compression operation has been reduced, and make things convenient for personnel's operation, can effectively promote valve transport efficiency, and then the time of the preceding compressed time of valve implantation and the time that reduces the valve field loading, promote the success rate of valve implantation.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

FIG. 1 is a schematic structural view of one embodiment of a transcatheter valve preloading system apparatus of the present application;

FIG. 2 is a schematic view of an exploded configuration of one embodiment of the transcatheter valve preloading system apparatus of the present application;

FIG. 3 is a schematic cross-sectional view of FIG. 1 taken along line III-III;

FIG. 4 is an enlarged partial schematic view of region IV of FIG. 3;

FIG. 5 is a schematic view of a first housing structure of an embodiment of the transcatheter valve preloading system apparatus of the present application;

FIG. 6 is a schematic cross-sectional view taken along line VI-VI in FIG. 5;

FIG. 7 is a schematic diagram of a pre-compression positioning mechanism of one embodiment of the transcatheter valve preloading system apparatus of the present application;

FIG. 8 is a schematic diagram of a push rod mechanism of one embodiment of the transcatheter valve preloading system apparatus of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it should be apparent that the described embodiments are only one sub-embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The loading of the valve is divided into dry valve loading and wet valve loading, one dry valve device mode is that the whole valve is compressed in the sheath tube all the time from the production completion of the valve to the time before the valve is used, and the valve stent is compressed for a long time, so that the recovery performance of the stent is influenced, namely the outer diameter of the stent cannot be recovered to a set size at the body temperature, and the implantation success rate and the valve performance are influenced; secondly, the leaflet part becomes very wrinkled after being compressed for a period of time, and the wrinkles caused by compression cannot be eliminated after rehydration, so that the opening and closing state of the valve and the service life of the valve are influenced after implantation. In addition, in some scenarios, such as in a surgical procedure for implanting a valve in a patient, the valve may not be successfully implanted once due to the complexity of the field, or a different valve may need to be implanted, etc., thus requiring multiple valve loadings and implants for the ultimate successful implantation, which can be life threatening if too much time is consumed during each loading.

Accordingly, the present application provides an embodiment of a transcatheter delivery valve preloading system device, see fig. 1, which is a schematic structural view of an embodiment of a transcatheter delivery valve preloading system device 100 of the present application, and in conjunction with fig. 2, the transcatheter delivery valve preloading system device 100 includes a first housing 10, a second housing 20, a pushing assembly 30, a guide tube 50, a positioning collar 60, and a delivery assembly 70.

Referring to fig. 3, the first housing 10 is hollow and is used for accommodating at least part of other components (e.g., the pushing assembly 30). The second housing 20 is connected to the first housing 10, and the first housing 10 can move relative to the second housing 20, and the movement mode can be sliding, spring elastic transmission, pneumatic transmission or spiral rotation, etc. Wherein the second casing 20 has a first compression chamber section 221 and a second compression chamber section 222 communicating with each other. The widths of the first compression chamber section 221 and the second compression chamber section 222 are sequentially decreased in a direction from the first compression chamber section 221 to the second compression chamber section 222. The first casing 10 and the second casing 20 may be made of plastic, corrosion-resistant metal or metal alloy, for example, PTFE (polytetrafluoroethylene), and the like, and are not limited herein.

The terms "first" and "second" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.

The push assembly 30 is partially disposed in the first housing 10 and partially exposed from the first housing 10. The portion of the first housing 10 exposed can be easily grasped by the fingers of the operator, and the portion located within the first housing 10 can be used to carry the valve 40 into the first compression chamber section 221. The pushing assembly 30 is movable relative to the first housing 10 in a sliding manner or the like. The direction of movement may be along the first housing 10 to the second housing 20. The pushing assembly 30 has a hollow passage 31. The hollow channel 31 is used to deliver the valve 40, i.e. the valve 40 is movable within the hollow channel 31. Further, the pushing assembly 30 is used to push the valve 40 into the first compression chamber section 221 for compression. The first housing 10 is used to push the valve 40 into the second compression chamber section 222 for further compression.

It will be appreciated that the valve 40 is initially in an uncompressed state, with the uncompressed valve 40 being located on the side of the first compression chamber section 221 remote from the second compression chamber section 222. When it is desired to compress the segment of the valve 40, the pushing assembly 30 can be pushed to cause the valve 40 to enter the first compression chamber segment 221 for compression, as the pushing assembly 30 can move relative to the first housing 10. Since the first housing 10 is relatively movable with respect to the second housing 20, driving the first housing 10 toward the second housing 20 can push the valve 40 located in the first compression chamber section 221 to the second compression chamber section 222 for further compression, until the compression of the valve 40 is complete, such as into the delivery assembly 70. After compression of the valve 40 is complete, the valve 40 is withdrawn from the hollow passage 31 in a direction from the second chamber section 222 to the first chamber section 221 (i.e., in a direction opposite to the direction of compression), and the compressed valve 40 can be used for implantation in a patient as desired.

Through set up first compression chamber section 221 and second compression chamber section 222 in second casing 20, and first casing 10 can move relative to second casing 20, push assembly 30 can move relative to first casing 10, and push assembly 30 has hollow channel 31 and is used for carrying valve 40, make respectively operate push assembly 30 and first casing 10 and realize the step compression to valve 40, above-mentioned structure is retrencied steadily, the flow of valve 40 compression operation has been reduced, and make things convenient for personnel's operation, can effectively promote valve 40 and carry efficiency, and then reduce the time of compressing before valve 40 implants and reduce the time of valve 40 field loading, promote the success rate of valve 40 implants.

In addition, when the valve 40 needs to be implanted for multiple times, only a new transcatheter valve delivery pre-loading system device needs to be reused, and the time required by the operation procedure of carrying out the compression loading on the valve 40 by each device is very short, so that the time for carrying out the compression loading on the valve 40 can be effectively reduced in the process of carrying out the implantation on the valve 40 for multiple times, the time required by the implantation process of a plurality of valves 40 is further reduced, and the hidden danger of life danger brought to a patient due to excessive time consumption is effectively reduced.

Alternatively, the first housing 10 and the second housing 20 may be coaxially slidably connected. For example, a sliding track may be provided on the outer surface of the second housing 20, the track may extend along the axis of the second housing 20, and a slider may be provided on the inner surface of the first housing 10, the number of the track and the slider is not limited specifically here as long as the sliding connection is satisfied, and the sliding connection between the first housing 10 and the second housing 20 is realized by the slider and the track matching. Of course, the positions of the slider and the slide rail may be interchanged, that is, a slide rail is provided on the inner surface of the pair of first housings 10 and a slider is provided on the outer surface of the second housing 20. The rapid movement of the first housing 10 relative to the second housing 20 can be achieved by a sliding connection.

Alternatively, referring to fig. 2 and 3, the first housing 10 and the second housing 20 are coaxially screwed. It is understood that the inner surface of the first housing 10 is provided with the internal thread 111 in the axial direction, and the internal thread 111 is located within the entire inner surface. The outer surface of the second housing 20 is provided with an external thread 23, the external thread 23 is located at one end of the second housing 20 adjacent to the first housing 10, and the number of the external threads 23 is less than that of the internal threads 111, through matching of the internal threads 111 and the external threads 23, a coaxial screw connection of the first housing 10 and the second housing 20 can be realized, so that a horizontal movement of the first housing 10 relative to the second housing 20 can be realized by rotating the first housing 10, and the horizontal movement of the first housing 10 relative to the second housing 20 can be more stable.

In some embodiments, referring to fig. 5 and 6 together, the first housing 10 can include a first outer barrel 11, a first inner barrel 12, and a first annular end wall 13. The first inner cylinder 12 is located inside the first outer cylinder 11, and the length of the first inner cylinder 12 may be smaller than the length of the first outer cylinder 11. The outer and inner peripheries of the first annular end wall 13 are connected to the first outer and

inner cylinders

11 and 12, respectively. That is, the outer peripheral edge of the first annular end wall 13 is connected to the first outer cylinder 11, and the inner peripheral edge of the first annular end wall 13 is connected to the first inner cylinder 12. The first annular end wall 13, the first outer barrel 11 and the first inner barrel 12 may be integrally formed. Alternatively, the first annular end wall 13, the first outer cylinder 11, and the first inner cylinder 12 may be formed by split joint (or adhesion), and the specific structure is not limited herein.

Alternatively, with continued reference to fig. 5 and 6, the outer surface of the first outer cylinder 11 is provided with a plurality of ribs 112, each rib 112 may extend along the axis of the first outer cylinder 11, and the ribs 112 are distributed along the circumferential direction of the first outer cylinder 11. Of course, the first ribs 112 may have other shapes, such as circular arc shapes or dot shapes, or the first ribs 112 may have other distributions, such as distribution along the axial direction of the first outer cylinder 11 or random dot distribution, and the specific configuration is not limited herein. The first outer cylinder 11 may be provided with a concave shape at a middle position or a position near the middle of the outer surface thereof, and the concave shape may be used for placing fingers of an operator. The reinforcing ribs 112 can enhance the strength of the first outer cylinder 11, the concave shape of the first outer cylinder 11 can facilitate the fingers of the operator to hold, and in addition, the above manner can also increase the friction force when the fingers of the operator contact the first outer cylinder 11, and reduce the probability of relative sliding when holding the first housing 10.

Alternatively, referring to fig. 3, the second housing 20 may include a second outer cylinder 21 and a second inner cylinder 22. The second inner cylinder 22 is provided in the second outer cylinder 21, and the second outer cylinder 21 and the second inner cylinder 22 may be integrally formed or joined (or bonded, etc.). The inner cavity of the second inner barrel 22 forms a first compression cavity section 221 and a second compression cavity section 222. The outer surface of the second outer cylinder 21 is screw-fitted to the inner surface of the first outer cylinder 11. That is, the second outer cylinder 21 is provided with an external thread 23 on the outer surface thereof and an internal thread 111 on the inner surface thereof.

The first compression chamber section 221 is further provided with an over-compression chamber section 223 at a side close to the first housing 10, the over-compression chamber section 223 may be located at a junction of the second outer cylinder 21 and the second inner cylinder 22, and the over-compression chamber section 223 is used for accommodating the valve 40 in an uncompressed state. One end of the second outer cylinder 21 is provided with a boss 211, that is, the boss 211 is located at the end of the second outer cylinder 21 opposite to the pushing assembly 30, and the boss 211 is used for limiting and abutting against the first outer cylinder 11. It can be understood that when the first housing 10 moves relative to the second housing 20, the first housing 10 does not move further toward the second housing 20 when the first outer cylinder 11 abuts against the boss 211. In this way, the first housing 10 is prevented from pushing the valve 40 out of the second compression chamber section 222 when the second compression chamber section 222 compresses the valve 40.

In some embodiments, referring to fig. 2 and 7, the pushing assembly 30 may further include a pre-compression positioning mechanism 32 and a pushing rod mechanism 33. The preload positioning mechanism 32 may abut against the pusher mechanism 33. The pre-pressing positioning mechanism 32 may include a pre-pressing end plate 321, a pre-pressing cylinder 322, and a plurality of rib positioning pieces 323. The pre-pressing cylinder 322 is connected to the pre-pressing end plate 321 and extends toward a side away from the push rod mechanism 32. The plurality of rib position pieces 323 are respectively connected with the prepressing cylinder 322 and the prepressing end plate 321, and the number of the rib position pieces 323 can be 3, 4 or 5. The rib pieces 323 may be arranged along the circumferential direction of the pre-pressing cylinder 322, so as to enhance the strength of the pre-pressing positioning mechanism 32.

The pre-pressing end plate 321, the pre-pressing cylinder 322 and the plurality of rib position pieces 323 can be integrally formed or fixed by splicing (or bonding, etc.). The pre-pressing end plate 321 and the pre-pressing cylinder 322 form the second part 312 of the hollow passage 31, i.e. the center of the pre-pressing end plate 321 is provided with a through hole, and the pre-pressing cylinder 322 is provided with a hollow passage, and the through hole is communicated with the hollow passage to form the second part 312 of the hollow passage 31.

Alternatively, referring to fig. 3 in combination, the width of the inner wall at the junction of the second inner cylinder 22 and the second outer cylinder 21 is first constant and then decreases along the direction from the first compression cavity section 221 to the second compression cavity section 222, that is, the width of the over-compression cavity section 223 is first constant and then decreases along the direction from the first compression cavity section 221 to the second compression cavity section 222. The width of the rib position sheet 323 is firstly unchanged and then reduced along the direction from the first compression cavity section 221 to the second compression cavity section 222, and the inner wall of the joint of the second inner cylinder 22 and the second outer cylinder 21 is used for abutting against the rib position sheet 323. Through the above manner, when the rib position sheet 323 enters the excessive compression cavity section 223, the rib position sheet 323 abuts against the inner wall of the second inner cylinder 22, and further abuts against the pre-pressing positioning mechanism 32, and the pre-pressing positioning mechanism 32 is prevented from entering the first compression cavity section 221.

In some embodiments, referring to fig. 2 and 8, the push rod mechanism 33 may include a push plate 331, a plurality of push rods 332, and a push rod accessory 333. The push rod 332 has one end connected to the push plate 331 and the other end connected to the push rod accessory 333. The push rod 332 and the push plate 331 may be integrally formed or bonded, and the push rod 332 and the push rod accessory 333 may be bonded. The push rod accessory 333 is used to facilitate the fingers of the operator to pinch, and accordingly, a knurled structure may be further provided on the outer surface of the push rod accessory 333 to increase the friction force, or other shapes that facilitate the gripping of the operator, such as the center of the outer surface of the push rod accessory 333 is concave. The push plate 331 abuts against the pre-pressing end plate 321, and when the push rod accessory 333 is held by an operator to push the push plate 331 in a direction from the first casing 10 to the second casing 20, the push plate 321 is driven to move horizontally.

The push plate 33, push rod 332 and push rod accessory 333 constitute the first portion 311 of the hollow passageway 31. It will be appreciated that the push plate 331 is centrally provided with a through hole. The push rods 332 may be multiple, for example, two or three, the multiple push rods 332 surround a hollow channel, the push rod accessory 333 is also provided with a hollow channel at the center, and the through hole is communicated with the hollow channel to form the first part 311 of the hollow channel 31.

Optionally, referring to fig. 5, the first annular end wall 13 is further provided with a plurality of arcuate through holes. It will be appreciated that the number of arcuate through-holes is the same as the number of push rods 322. The push rod 322 can be inserted through the arc-shaped through hole, and the first inner cylinder 12 is located in the first portion 311 of the hollow passage 31, so that the push rod 332 can move relative to the first housing 10, and on the other hand, because the first inner cylinder 12 is located in the hollow passage 31, when the push rod 332 moves relative to the first housing 10, the first housing 10 itself does not move.

In some embodiments, referring to fig. 2, the transcatheter delivery valve preload system apparatus 100 can further comprise a hollow guide tube 50. With reference to fig. 3, 4, 7 and 8, one end of the guiding tube 50 is inserted into the second portion 312 of the hollow channel 31, and the other end is inserted into the first inner cylinder 12. The guide tube 50 is further provided with a flange base 51, and the flange base 51 is adapted to abut against the end wall of the first inner tube 12. Guide tube 50 is used to house valve 40. When the first housing 10 moves relative to the second housing 20, for example, when the first housing 10 slides relative to the second housing 20, the first inner cylinder 12 can abut against the flange table 51, so as to drive the guide tube 50 into the second compression cavity section 222, thereby further compressing the valve 40.

Optionally, with continued reference to fig. 4, the transcatheter valve preloading system device 100 may further include a positioning collar 60. The positioning ring 60 can be sleeved on the guiding tube 50 and located between the flange platform 51 and the first inner barrel 12. In some applications, such as the first housing 10 and the second housing 20 are coaxially connected in a spiral manner, when the first outer cylinder 11 is rotated to move relative to the second housing 20, the first inner cylinder 12 is also rotated synchronously, so that the guide tube 50 can be moved toward the second compression chamber section. Without the retaining ring 60, the guide tube 50 may also rotate, which may cause the valve 40 to rotate and damage the valve 40. Therefore, the positioning ring 60 is located between the flange platform 51 and the first inner cylinder 12 and is used for abutting against the end wall of the first inner cylinder 12, when the first outer cylinder 11 is rotated to move relative to the second housing 20, the flange platform 51 does not directly abut against the end wall of the first inner cylinder 12, the guide tube 50 does not rotate, and therefore the probability that the valve 40 is damaged when entering the second compression cavity section 222 for compression can be effectively reduced.

In some embodiments, referring to fig. 2 and 3, the transcatheter delivery valve preload system apparatus 100 can further comprise a delivery assembly 70. The delivery assembly 70 may be threaded through the guide tube 50 and the hollow channel 31. The delivery assembly 70 may also include a valve 40. The valve 40 may be a stem valve or the like. The valve 40 is pre-loaded into the delivery assembly 70 with a portion of the valve 40 inside the delivery assembly 70, another portion exposed outside the delivery assembly 70, and the portion of the valve 40 exposed outside the delivery assembly 70 in a deployed state. It will be appreciated that, before the valve 40 is implanted, the valve 40 is passed through the guide tube 50 and the hollow channel 31 by the delivery assembly 70 and then sealed and stored by the first and

second housings

10 and 20, and since the valve 40 is in the semi-expanded state, the valve 40 is prevented from being compressed entirely within the delivery assembly 70.

With reference to fig. 4, the delivery assembly 70 may further include a sheath 71, a rod 72, and a sealing head 73. A sheath 71 is disposed through the guide tube 50 and the hollow channel 31, the sheath 71 being configured to receive the valve 40. The connecting rod 72 has one end connected to the sealing head 73 and the other end connected to the sheath tube 71, and the sealing head 73 may be olive-shaped or conical, as long as it can seal the opening of the sheath tube 71. Connecting rod 72 may move sealing head 73 relative to sheath 71 for sealing sheath 71. After the valve 40 is compressed in the second chamber section 222, the valve 40 is compressed and encapsulated by the sealing head 73 by moving the driving link 72 in the direction from the second chamber section 222 to the first chamber section 221 (i.e., in the direction opposite to the compression direction) so that the valve 40 is brought into the sheath 71. Through the mode, dust or water vapor and the like can be prevented from entering the sheath 71, and the probability that the valve 40 positioned in the sheath 71 is polluted is effectively reduced.

While the transcatheter delivery valve preloading system apparatus 100 of the above embodiment is described with reference to the related scenarios, it can be appreciated that the valve 40 of the transcatheter delivery valve preloading system apparatus 100 of the present application is pre-loaded into the delivery assembly 70, and the delivery assembly 70 is positioned within the hollow passage 31 for easy transport, with the valve 40 in the semi-deployed configuration, in which the valve 40 is positioned within the pre-compressed lumen segment and exposed relative to the pre-compression positioning mechanism 32, and the undeployed portion of the valve 40 is positioned within the delivered assembly 70 and within the hollow passage 31. When the valve 40 is not required to be used, the valve 40 is always stored in such a half-deployed state, and ice water, physiological saline, or the like is not required to be used. When it is desired to use the valve 40, i.e., to implant the valve 40 into a patient or the like, the following operations are performed:

first, the operator holds the first housing 10 with one hand and pushes the pre-pressing push rod accessory 333 with the other hand. When pushed to the point where it cannot be pushed any further, i.e., the rib tabs 323 abut the inner wall of the second inner barrel 22 (adjacent the over-compressed cavity section 223), the valve 40 in its semi-expanded configuration is now compressed within the first compression cavity section 221. The second housing 20 is then secured with one hand (the hand holding the push rod assist 333 before can be released), the first housing 10 is actuated (e.g., rotated) with the other hand, the first inner barrel 12 carries the guide tube 50 into the second compression chamber section 222, and thus the valve 40 located in the first compression chamber section 221 is pushed into the second compression chamber section 222 for further compression, and when the first housing 10 abuts the boss 211 (i.e., the rotation stroke is over), the compression of the second compression chamber section 222 is completed. Finally, the linkage 72 and the sealing head 73 of the delivery assembly 70 are actuated to advance the valve 40 through the sealing head 73 into the sheath 71, and the entire delivery assembly 70 is withdrawn from the second housing 20 and the first housing 10, such that the valve 40 in the semi-deployed configuration is compressed and encapsulated within the delivery assembly 70, and the valve 40 in the delivery assembly 70 is ready for implantation into a patient. When an implantation is not necessarily successful, or a different valve 40 needs to be implanted, etc., the procedure can be repeated by replacing a new transcatheter valve device-valve pre-load system device 100.

In the above manner, the operation flow of compressing the valve 40 is simple (only one push and one rotation are needed to complete the operation), complex conditions such as ice water low temperature and the like are not needed, and the whole valve 40 can be prevented from being compressed in the sheath 71, and the operation flow reduces the time for compressing the valve 40 and the time for loading the valve 40 on site, thereby being beneficial to improving the recovery performance of the valve 40 and further improving the success rate of implanting the valve 40. In addition, when the valve 40 needs to be implanted for multiple times, only a new transcatheter valve delivery pre-loading system device needs to be reused, and the time required by the operation process of compressing and loading the valve 40 by each device is very short, so that the time for compressing and loading the valve 40 can be effectively reduced in the process of implanting the valve 40 for multiple times, the time required by the implanting process of a plurality of valves 40 is further reduced, and the hidden danger of life danger brought to a patient due to excessive time consumption is effectively reduced.

The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims

1. A transcatheter delivery valve preloading system device, comprising:

the first shell comprises a first outer cylinder, a first inner cylinder and a first annular end wall, the first inner cylinder is positioned inside the first outer cylinder, and the outer periphery and the inner periphery of the first annular end wall are respectively connected with the first outer cylinder and the first inner cylinder;

a second housing coupled to the first housing, the first housing being movable relative to the second housing, wherein the second housing has a first compression chamber section and a second compression chamber section in communication; and

the pushing assembly is provided with a hollow channel and comprises a push rod, the first annular end wall is further provided with a plurality of arc-shaped through holes, and the push rod penetrates through the arc-shaped through holes;

one end of the guide pipe penetrates through the hollow channel, the other end of the guide pipe penetrates through the first inner cylinder, and a flange table is further arranged on the guide pipe and used for being abutted against the end wall of the first inner cylinder;

the delivery assembly is arranged in the guide tube and the hollow channel in a penetrating mode, a valve is loaded on the delivery assembly, one part of the valve is located inside the delivery assembly, the other part of the valve is exposed outside the delivery assembly, and the part, exposed out of the delivery assembly, of the valve is in a spreading state;

wherein the pushing assembly is used for pushing the valve into the first compression cavity section for compression, and the first shell is used for pushing the valve into the second compression cavity section for further compression.

2. The transcatheter delivery valve preloading system device of claim 1, wherein the first housing and the second housing are in a coaxial sliding connection; or the first shell and the second shell are coaxially and spirally connected.

3. The transcatheter delivery valve pre-load system device of claim 2,

the second shell comprises a second outer barrel and a second inner barrel, the second inner barrel is arranged in the second outer barrel, an inner cavity of the second inner barrel forms the first compression cavity section and the second compression cavity section, the outer surface of the second outer barrel is in spiral fit with the inner surface of the first outer barrel, a boss is arranged at one end of the second outer barrel and used for limiting and abutting against the first outer barrel.

4. The transcatheter delivery valve pre-loading system device according to claim 3, wherein the pushing assembly comprises a pre-pressing positioning mechanism and a pushing rod mechanism, the pre-pressing positioning mechanism abuts against the pushing rod mechanism, wherein the pre-pressing positioning mechanism comprises a pre-pressing end plate, a pre-pressing cylinder and a plurality of rib position pieces, the pre-pressing cylinder is connected with the pre-pressing end plate and extends towards one side away from the pushing rod mechanism, the rib position pieces connect the pre-pressing cylinder with the pre-pressing end plate, the pushing rod mechanism comprises a pushing plate, a plurality of pushing rods and a pushing rod auxiliary piece, one end of each pushing rod is connected with the pushing plate, the other end of each pushing rod is connected with the pushing rod auxiliary piece, the pushing plate abuts against the pre-pressing end plate, the pushing rods and the pushing rod auxiliary pieces form a first part of the hollow channel, and the pre-pressing end plate and the pre-pressing cylinder form a second part of the hollow channel, wherein the first inner barrel is located within the first portion of the hollow passageway.

5. The transcatheter delivery valve preloading system device of claim 4, wherein the guide tube is threaded at one end within the second portion of the hollow channel.

6. The transcatheter valve preloading system device of claim 5, further comprising a positioning collar disposed over the guide tube and between the flange table and the first inner barrel.

7. The transcatheter delivery valve preloading system device of any one of claims 1-6, wherein the delivery assembly is threaded through the guide tube and the first portion of the hollow channel.

8. The transcatheter valve preloading system apparatus of claim 7, wherein the delivery assembly includes a sheath, a linkage, and a sealing head, the sheath being disposed through the guide tube and the first portion of the hollow channel, the sheath being configured to receive the valve, the linkage being coupled to the sealing head at one end and the sheath at the other end, the linkage being configured to move the sealing head relative to the sheath for sealing the sheath.

9. The transcatheter delivery valve preloading system device of claim 4, wherein an inner wall at a junction of the second inner barrel and the second outer barrel has a width that is constant and then decreases in a direction from the first compression chamber segment to the second compression chamber segment, and wherein a width of the rib position tab is constant and then decreases in a direction from the first compression chamber segment to the second compression chamber segment, the inner wall at the junction of the second inner barrel and the second outer barrel being configured to abut the rib position tab.

10. The transcatheter delivery valve preloading system device of claim 9, wherein an outer surface of the first outer barrel is provided with a plurality of reinforcing ribs.