CN215425318U

CN215425318U - Artificial heart valve loader

Info

Publication number: CN215425318U
Application number: CN202121566597.8U
Authority: CN
Inventors: 林雄涛; 张亮; 何俊; 陈卓; 卞弋; 杨柳
Original assignee: Beijing Puhui Biomedical Engineering Co ltd
Current assignee: Beijing Puhui Biomedical Engineering Co ltd
Priority date: 2021-07-09
Filing date: 2021-07-09
Publication date: 2022-01-07
Anticipated expiration: 2031-07-09

Abstract

The utility model belongs to the field of interventional medical instruments, and discloses a prosthetic heart valve loader which comprises a protective sleeve, a loading guide sleeve and a pushing device, wherein a first loading channel is formed in the protective sleeve, a second loading channel is formed in the loading guide sleeve, the protective sleeve is fixedly connected with the loading guide sleeve, the first loading channel is communicated with the second loading channel, the opening of the second loading channel is larger than that of the first loading channel, and the pushing device acts in the second loading channel in a reciprocating manner. The artificial thin film extruded through the second loading channel is pushed to carry the sheath tube on the first loading channel, so that the abrasion of the tube orifice of the sheath tube can be reduced.

Description

Artificial heart valve loader

Technical Field

The utility model belongs to the field of interventional medical instruments, and particularly relates to a loading device for a prosthetic heart valve.

Background

The heart is a very important organ of the human body and provides power for the blood circulation of the human body, wherein the valve plays a role in controlling the blood flow direction, and the valve is opened and closed correspondingly with the contraction and the relaxation of the heart, so that the valve of the heart must be capable of enduring the squeezing of blood and the surrounding valve annulus and the scouring of blood for a long time. If the valve fails to close completely or opens insufficiently due to disease or other causes, it will result in blood backflow and inadequate blood flow supply.

The operation trauma of the operable valve replacement is large, and the recovery time of the patient is long, so the operation is forbidden for the old patient due to the old, weak constitution, serious disease or other diseases. Minimally invasive surgical techniques are continuously developed, wherein a heart valve prosthesis can be introduced into a patient through a catheter, namely, the heart valve is placed through minimally invasive intervention surgery, and the chest is not required to be opened in the surgery, so that the trauma is small, the postoperative recovery is fast, and a new solution is provided for heart valve stenosis patients who cannot prolong the lives or relieve the pains of the patients through conventional treatment means at present.

However, since the artificial heart valve needs to be squeezed when being loaded, the resistance to enter the sheath is large, the orifice of the sheath is easily scratched or the sewn valve skirt is blocked from entering, and there is a risk of rupture, and there is a risk of damaging the vessel wall or dropping to form a secondary injury in the releasing process.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provide a prosthetic heart valve loader which can reduce the abrasion of a nozzle of an external sheath.

The technical scheme is as follows:

the artificial heart valve loader comprises a protective sleeve, a loading guide sleeve and a pushing device, a first loading channel is formed in the protective sleeve, a second loading channel is formed in the loading guide sleeve, the protective sleeve is fixedly connected with the loading guide sleeve, the first loading channel is communicated with the second loading channel, the opening of the second loading channel is larger than that of the first loading channel, and the pushing device acts in the second loading channel in a reciprocating mode.

In one embodiment, a first connecting position is arranged on the protective sleeve, a second connecting position is arranged on the loading guide sleeve, and the first connecting position is matched with the second connecting position.

In one embodiment, the first connecting position comprises a connecting hole with an internal thread, the second connecting position comprises a connecting column with an external thread, and the connecting column is connected with the connecting hole.

In one embodiment, the pushing device comprises a pushing member acting in the second loading channel and a driving member pushing the pushing member.

In one embodiment, the outer wall of the loading guide sleeve is provided with an external thread, a matching channel formed in the driving part is provided with an internal thread, the pushing part at least partially extends into the second loading channel and at least partially extends out of the loading guide sleeve, the driving part is matched with the loading guide sleeve through screwing, and the driving part pushes the part of the pushing part, which is positioned outside the loading guide sleeve.

In one embodiment, the loading guide sleeve is provided with an avoiding groove, the avoiding groove penetrates from the outer side to the second loading channel, the pushing element comprises an outer ring and an inner ring, the inner ring and the outer ring are connected through a connecting rod, the pushing element is installed in the loading guide sleeve, and the connecting rod penetrates through the avoiding groove.

In one embodiment, the loading guide sleeve is provided in a split structure.

In one embodiment, the pushing device is divided into at least two sections, the end of the first section is conical, and the outer contour of the end of the second section is larger than that of the first section.

In one embodiment, the device further comprises an auxiliary sleeve, a third loading channel is arranged inside the auxiliary sleeve, and the auxiliary sleeve is installed in the first loading channel.

In one embodiment, the second loading passage is funnel-shaped, and a narrow opening is formed at one side close to the first loading passage.

The technical scheme provided by the utility model has the following advantages and effects:

when the artificial valve needs to be loaded, the outer sheath tube is installed in the first loading channel, the protective sleeve and the loading guide sleeve are fixed, then the opened artificial valve is fixed with the connector and is placed in the second loading channel together, the first loading channel and the second loading channel are communicated at the moment, the artificial valve and the connector are pushed downwards and pushed into the outer sheath tube through the pushing device, the artificial valve is forced to shrink under the guiding action of the second loading channel, the port abrasion of the shrunk artificial valve to the outer sheath tube can be reduced, and the probability of secondary injury can also become low when the artificial valve is used.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and, together with the description, serve to explain the principles and effects of the utility model.

Unless otherwise specified or defined, the same reference numerals in different figures refer to the same or similar features, and different reference numerals may be used for the same or similar features.

FIG. 1 is a schematic structural view of a first embodiment of the present invention before installation;

FIG. 2 is a schematic diagram of a mounted structure according to a first embodiment of the present invention;

fig. 3 is a schematic structural view illustrating the installation of the protective sheath and the loading guide sleeve according to the first embodiment of the present invention;

fig. 4 is a schematic structural diagram of a pushing member according to a first embodiment of the utility model;

fig. 5 is a schematic structural view of a loading guide sleeve according to a first embodiment of the present invention;

fig. 6 is a schematic top view of a loading guide sleeve according to a first embodiment of the present invention;

fig. 7 is a schematic structural view of a loading guide sleeve and a pushing device before installation according to a second embodiment of the utility model;

fig. 8 is a schematic structural view of the loading guide sleeve and the pushing device according to the second embodiment of the present invention after installation.

Description of reference numerals:

10. a protective sleeve; 11. a first loading passage; 12. a first connection site; 20. loading a guide sleeve; 21. a second loading passage; 22. a second connection bit; 23. an avoidance groove; 30. a pushing device; 31. a pushing member; 311. an outer ring; 312. an inner ring; 313. a connecting rod; 32. a drive member; 40. an auxiliary sleeve; 50. a connector; 60. a prosthetic valve; 70. an outer sheath.

Detailed Description

In order to facilitate an understanding of the utility model, specific embodiments thereof will be described in more detail below with reference to the accompanying drawings.

Unless specifically stated or otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In the case of combining the technical solutions of the present invention in a realistic scenario, all technical and scientific terms used herein may also have meanings corresponding to the purpose of achieving the technical solutions of the present invention.

As used herein, unless otherwise specified or defined, "first" and "second" … are used merely for name differentiation and do not denote any particular quantity or order.

As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items, unless specified or otherwise defined.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present; when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present.

Example one

As shown in fig. 1 and 2, the prosthetic heart valve loader comprises a protective sleeve 10, a loading guide sleeve 20 and a pushing device 30, wherein a first loading passage 11 is formed inside the protective sleeve 10, a second loading passage 21 is formed inside the loading guide sleeve 20, the protective sleeve 10 is fixedly connected with the loading guide sleeve 20, the first loading passage 11 is communicated with the second loading passage 21, the opening of the second loading passage 21 is larger than that of the first loading passage 11, and the pushing device 30 acts in the second loading passage 21 in a reciprocating manner.

When the artificial valve 60 needs to be loaded, the outer sheath 70 is installed in the first loading passage 11, the protective sleeve 10 and the loading guide sleeve 20 are fixed, then the expanded artificial valve 60 and the connector 50 are fixed and are placed in the second loading passage 21 together, at this time, the first loading passage 11 is communicated with the second loading passage 21, the artificial valve 60 and the connector 50 are pushed downwards and pushed into the outer sheath 70 through the pushing device 30, and the guide effect of the second loading passage 21 forces the artificial valve 60 to shrink, so that the port abrasion of the shrunk artificial valve 60 to the outer sheath 70 can be reduced, and the probability of secondary injury can be reduced in use.

Wherein the first and second loading passages 11, 21 are shown in the inner portion in a dashed line position.

The second loading passage 21 is funnel-shaped, and a narrow opening is formed at a side close to the first loading passage 11. The prosthetic valve 60 is slowly tightened as it passes through the second loading channel 21 to facilitate entry into the first loading channel 11.

As shown in fig. 3, the protective sheath 10 is provided with a first connecting position 12, the loading guide 20 is provided with a second connecting position 22, and the first connecting position 12 is matched with the second connecting position 22. Specifically, the first connection position 12 includes a connection hole with an internal thread, and the second connection position 22 includes a connection column with an external thread, and the connection column is connected to the connection hole. The protective sleeve 10 is fixedly connected with the loading guide sleeve 20 in a thread matching mode.

As shown in fig. 1 to 5, the pushing device 30 includes a pushing member 31 and a driving member 32, the pushing member 31 acts in the second loading passage 21, and the driving member 32 pushes the pushing member 31. The driving member 32 is used for pushing the pushing member 31, wherein the pushing member 31 acts on the artificial valve 60 in the second loading channel 21, thereby completing the pushing and squeezing action of the artificial membrane.

As shown in fig. 5, the outer wall of the loading guide sleeve 20 is provided with an external thread, the matching channel formed inside the driving member 32 is provided with an internal thread, the pushing member 31 at least partially extends into the second loading channel 21 and at least partially extends out of the loading guide sleeve 20, the driving member 32 is matched with the loading guide sleeve 20 by screwing, and the driving member 32 pushes the portion of the pushing member 31 located outside the loading guide sleeve 20. The driving element 32 can now be screwed up and down on the outer wall of the loading guide 20, and the pusher 31 can then be driven.

Specifically, the loading guide sleeve 20 is provided with an avoiding groove 23, the avoiding groove 23 penetrates through the second loading channel 21 from the outside, the pushing element 31 comprises an outer ring 311 and an inner ring 312, the inner ring 312 and the outer ring 311 are connected through a connecting rod 313, the pushing element 31 is installed in the loading guide sleeve 20, and the connecting rod 313 penetrates through the avoiding groove 23. Wherein the outer ring 311 is used to engage the driver 32 and the inner ring 312 is used to push the prosthetic valve 60.

The loading guide sleeve 20 may be integrally formed or may be split-jointed, and in this embodiment, the loading guide sleeve 20 is configured as a split structure, and as shown in fig. 6, is separated from the avoiding groove 23.

The artificial heart valve loader also comprises an auxiliary sleeve 40, a third loading channel is arranged inside the auxiliary sleeve 40, and the auxiliary sleeve 40 is installed in the first loading channel 11. In effect, the outer sheath tube 70 fits within the third loading channel, providing a second layer of protection.

Example two

The difference between this embodiment and the first embodiment is:

as shown in fig. 7 and 8, the loading guide 20 is a two-piece structure, and can be spliced with each other to form a funnel-shaped second loading channel 21, the pushing device 30 is divided into at least two sections, the end of the first section is tapered, and the outer contour of the end of the second section is larger than that of the first section. When pushing the prosthetic valve 60, the prosthetic valve 60 is pushed into the first loading channel 11 by squeezing the end position of the second segment. And a clamping hole is arranged at the bottom of the first section and used for clamping the connecting head 50. This mode of setting can directly adopt the hand extrusion, accomplishes the propulsion of artifical valve 60.

The rest of the structure is the same as the first embodiment, and the description is not repeated here.

When the drawing description is quoted, the new characteristics are explained; in order to avoid that repeated reference to the drawings results in an insufficiently concise description, the drawings are not referred to one by one in the case of clear description of the already described features.

The above embodiments are provided to illustrate, reproduce and deduce the technical solutions of the present invention, and to fully describe the technical solutions, the objects and the effects of the present invention, so as to make the public more thoroughly and comprehensively understand the disclosure of the present invention, and not to limit the protection scope of the present invention.

The above examples are not intended to be exhaustive of the utility model and there may be many other embodiments not listed. Any alterations and modifications without departing from the spirit of the utility model are within the scope of the utility model.

Claims

1. The artificial heart valve loader is characterized by comprising a protective sleeve, a loading guide sleeve and a pushing device, wherein a first loading channel is formed in the protective sleeve, a second loading channel is formed in the loading guide sleeve, the protective sleeve is fixedly connected with the loading guide sleeve, the first loading channel is communicated with the second loading channel, the opening of the second loading channel is larger than that of the first loading channel, and the pushing device acts in the second loading channel in a reciprocating manner.

2. The prosthetic heart valve loader of claim 1, wherein the protective sheath is provided with a first connection location and the loading guide sleeve is provided with a second connection location, the first connection location being engaged by the second connection location.

3. The prosthetic heart valve loader of claim 2, wherein the first connection site comprises a connection hole with internal threads and the second connection site comprises a connection post with external threads, the connection post being connected to the connection hole.

4. The prosthetic heart valve loader of any one of claims 1-3, wherein the pushing device comprises a pushing member acting within the second loading channel and a driving member that pushes the pushing member.

5. The prosthetic heart valve loader of claim 4, wherein the outer wall of the loading guide sleeve is externally threaded, the mating channel defined within the drive member is internally threaded, the pusher extends at least partially into the second loading channel and at least partially out of the loading guide sleeve, the drive member is threadably engaged with the loading guide sleeve, and the drive member pushes the portion of the pusher outside the loading guide sleeve.

6. The heart valve prosthesis loader of claim 5, wherein the loading guide sleeve is provided with an avoiding groove, the avoiding groove penetrates from the outside to the second loading channel, the pushing member comprises an outer ring and an inner ring, the inner ring and the outer ring are connected through a connecting rod, the pushing member is installed in the loading guide sleeve, and the connecting rod penetrates through the avoiding groove.

7. The prosthetic heart valve loader of any one of claims 1-3, wherein the loading guide sleeve is provided as a split structure.

8. The prosthetic heart valve loader of claim 7, wherein the pusher is divided into at least two segments, a first segment having a tapered end and a second segment having an outer profile that is larger than the outer profile of the first segment.

9. The prosthetic heart valve loader of any one of claims 1-3, further comprising an auxiliary sheath having a third loading channel disposed therein, the auxiliary sheath being mounted within the first loading channel.

10. The prosthetic heart valve loader of any one of claims 1-3, wherein the second loading channel is funnel-shaped with a narrow mouth on a side adjacent to the first loading channel.