CN216318216U

CN216318216U - Clamping and positioning device for interventional valve and artificial valve system

Info

Publication number: CN216318216U
Application number: CN202122130678.XU
Authority: CN
Inventors: 黄健兵
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-03
Filing date: 2021-09-03
Publication date: 2022-04-19
Anticipated expiration: 2031-09-03

Abstract

The application discloses centre gripping positioner and artifical valve system of intervention valve, centre gripping positioner are used for fixing a position artifical valve with the mode of components of a whole that can function independently, and centre gripping positioner is the tubular structure, and the district is placed for artifical valve in the inside of tubular structure, has relative inflow side and outflow side in the axial of tubular structure, and centre gripping positioner includes: a plurality of holding units; a plurality of support legs; pulling the strip; the clamping assembly is used for clamping the native valve with the artificial valve, and comprises two or more clamping arms respectively arranged on the supporting legs, and the two or more clamping arms respectively extend oppositely from the supporting legs; the intersection of the clamping arm and the foot has an overall maximum width dimension W1, the clamping arm extending a length L3 from the foot, wherein the ratio of W1 to L3 ranges from 0.125 to 0.5. This application passes through centre gripping positioner assistance-localization real-time artificial valve, can effectively improve artificial valve's support location and implant the effect.

Description

Clamping and positioning device for interventional valve and artificial valve system

Technical Field

The application relates to the field of medical equipment, in particular to a clamping and positioning device for an interventional valve and a prosthetic valve system.

Background

With the aging population, the incidence of valvular Heart disease has increased significantly, primarily due to the development of lesions in the Native Heart Valve (Native Valve) of patients. Such as native heart valve narrowing, native valve leakage, and regurgitation. At present, the experimental and clinical results show that the medicament for treating the pathological changes of the autologous heart valves has poor treatment effect and good operation effect. Surgery is primarily directed to replacement of the valve. When replacing the valve, the native valve may be excised and replaced with a biological or mechanical valve. Mechanical valves require lifelong administration of anticoagulant drugs to prevent clot formation, and the clicking of the valve is usually heard through the chest. Biological tissue valves generally do not require such drugs. Tissue valves may utilize porcine or bovine valves and are typically attached to a synthetic annulus, which is secured to the patient's heart valve annulus.

The inventors have found that prior art prosthetic valves still leave room for improvement in stent positioning, ease of implantation, and the like.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the application discloses a centre gripping positioner who intervenes valve for with the mode location artificial valve of components of a whole that can function independently, centre gripping positioner is the tubular structure, and the inside of tubular structure is artificial valve and places the district, has relative inflow side and outflow side in the axial of tubular structure, centre gripping positioner includes:

the supporting units are arranged at intervals along the circumferential direction, and the outflow sides of the supporting units have a tendency of eversion and are used for supporting the artificial valve;

the supporting legs are correspondingly arranged between two adjacent supporting units in the circumferential direction, each supporting leg is provided with at least two fixed ends, the two fixed ends are respectively connected with the two adjacent supporting units, and each supporting leg extends from the two fixed ends to the inflow side and is intersected to form a flap pocket abutting part;

the pulling strips are connected among the bearing units along the circumferential direction;

the clamping assembly is used for clamping the native valve with the artificial valve, and comprises two or more clamping arms respectively arranged on the supporting legs, and the two or more clamping arms respectively extend oppositely from the supporting legs; the intersection of the clamping arm and the foot has an overall maximum width dimension W1, the clamping arm extending a length L3 from the foot, wherein the ratio of W1 to L3 ranges from 0.125 to 0.5.

Several alternatives are provided below, but not as an additional limitation to the above general solution, but merely as a further addition or preference, each alternative being combinable individually for the above general solution or among several alternatives without technical or logical contradictions.

Optionally, the clamping arms are arranged in groups two by two, and the corresponding clamping arms extend oppositely from the two adjacent supporting legs.

Optionally, on a plane where the clamping arms arranged in groups are located and parallel to the central axis of the clamping and positioning device, an included angle between the extending direction of the clamping arms and the extending direction of the whole supporting leg is a first extending angle a, and the range of the first extending angle a is 65 degrees to 115 degrees.

Optionally, one end of each clamping arm, which faces away from the supporting leg, gradually converges into a clamping tip.

Optionally, a release gap for deformation of the native valve is left between the clamping arms.

Optionally, on a plane where the group of clamping arms are located and which vertically penetrates through the central axis of the clamping and positioning device, an included angle between a straight line where the clamping tips of the group of clamping arms are located and a tangent line of the supporting leg at the intersection of the end portions of the clamping arms is a second extension angle B, and the range of the second extension angle B is 15 degrees to 45 degrees.

Optionally, the distance of the release gap between the clamping tips of the sets of clamping arms is L5, wherein the ratio between L4 and L5 ranges from 0.1 to 0.5, as compared to the support leg retraction distance L4.

Optionally, the clamping arm is elongate; the clamping arm gradually converges to a clamping tip as the clamping arm moves away from the supporting leg.

Optionally, the whole cylindrical structure is hourglass-shaped with two ends expanded outwards and a waist contracted part.

Optionally, the holding unit is arranged as follows:

the supporting unit is arranged at the waist; or

The bearing unit is arranged at one end of the waist close to the outflow side, and the extending direction of the supporting legs is bent to form the waist.

The application also discloses a prosthetic valve system, including the prosthetic valve that can inside and outside nested and the centre gripping positioner among the above-mentioned technical scheme, the outflow side of prosthetic valve has radial expanded structure, a plurality of bearing units with expanded structure offsets the location.

This application passes through centre gripping positioner assistance-localization real-time artificial valve, can effectively improve artificial valve's support location and implant the effect.

Specific advantageous technical effects will be further explained in conjunction with specific structures or steps in the detailed description.

Drawings

FIG. 1a is a schematic structural view of a clamping and positioning device in an eighth embodiment;

FIG. 1b is an enlarged view of the clamping assembly of FIG. 1 a;

FIG. 1c is a schematic view of another perspective of the clamping and positioning device shown in FIG. 1 a;

FIG. 1d is an enlarged view of the clamping assembly of FIG. 1 c;

FIG. 1e is a schematic view of the clamping and positioning device shown in FIG. 1a from another perspective;

FIG. 1f is an enlarged view of the clamping assembly of FIG. 1 e.

The reference numerals in the figures are illustrated as follows:

11. an inflow side; 12. an outflow side; 13. a waist part;

20. a holding unit;

30. supporting legs; 32. a petal pocket abutting portion; 34. a clamping assembly; 343. a clamp arm; 3431. clamping the tip; 3432. the gap is released.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the 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.

It will be understood that 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 a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, 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 application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The outflow side 12 and the inflow side 11 are herein in opposite directions, so that each part is provided with a respective outflow side 12 and inflow side 11, and, without explicit emphasis, the expressions in the following with respect to both the outflow side 12 and the inflow side 11 refer to the corresponding part at the end of the corresponding direction, but are not limited thereto.

Referring to fig. 1a to 1f, the present application discloses a clamping and positioning device for a prosthetic valve, which is used to position the prosthetic valve in a split manner, the clamping and positioning device is a cylindrical structure, the inside of the cylindrical structure is a prosthetic valve placing area, and the cylindrical structure has an inflow side 11 and an outflow side 12 opposite to each other in the axial direction, and the clamping and positioning device includes:

a plurality of supporting units 20 which are arranged at intervals along the circumferential direction, and the outflow side 12 of each supporting unit 20 has a tendency of eversion and is used for supporting the artificial valve;

the supporting legs 30 are correspondingly arranged between two adjacent supporting units 20 in the circumferential direction, each supporting leg 30 is provided with at least two fixed ends, the two fixed ends are respectively connected with the two adjacent supporting units 20, and each supporting leg 30 extends from the two fixed ends to the inflow side 11 and is intersected to form a flap pocket abutting part 32;

a pulling strip connected between the supporting units 20 in the circumferential direction;

a clamping assembly 34 for clamping the native valve with the prosthetic valve, the clamping assembly 34 comprising two or more clamping arms 343 respectively disposed on the support legs 30, the two or more clamping arms 343 respectively extending oppositely from the support legs 30;

in terms of dimensional ratio, the intersection of the clamping arm 343 and the supporting foot 30 has a maximum width dimension W1 as a whole, and the clamping arm 343 extends from the supporting foot 30 by a length L3, wherein the ratio of W1 to L3 ranges from 0.125 to 0.5.

The clamping and positioning device is mainly used for realizing the auxiliary fixation of the artificial valve. Wherein the support unit 20 is used for mutually supporting with the artificial valve, the supporting legs 30 realize the cooperation with corresponding physiology structure through the valve pocket support portion 32, and the tractive strip is used for restricting the relative position relation of each support unit 20. The three parts form a cylindrical structure and are mutually matched in mechanical relation so as to realize a preset function. The design principle, operation process and structural effect of each part will be explained in detail below. From whole effect, this application passes through centre gripping positioner assistance-localization real-time artificial valve, can effectively improve artificial valve's support location and implant the effect.

The clamping assembly 34 is split from the entirety into two or more independent clamping arms 343, which enables the clamping assembly 34 to be implanted across the sinus. Meanwhile, the clamping arms 343 which are separately arranged can generate more multidimensional acting force on the native valve, even the native valve is rubbed, so that the positioning effect is improved. The clamping arms 343 are arranged in groups, and the corresponding clamping arms 343 extend from two adjacent supporting legs 30 in opposite directions.

In a specific form, referring to an embodiment, an end of each clamping arm 343 facing away from the supporting foot 30 gradually converges to a clamping tip 3431. The clamping tips 3431 can puncture or lift the native valve to a certain degree, and the damage degree of the native valve can be adjusted according to actual needs, so that negative effects on the treatment process are avoided. In order to better match the effect of the clamping arms 343 on the native valve, referring to an embodiment, a release gap 3432 for the native valve to deform is left between the clamping arms 343. The release gap 3432 can enable the native valve to move under the action of the clamping arm 343 according to the preset condition, and the positioning effect is improved. In a specific form, the clamp arm 343 in the drawing is provided to extend from the corresponding support leg 30 to the outflow side. On a plane where the clamping arms 343 arranged in groups are located and parallel to the central axis of the clamping and positioning device, an included angle between the extending direction of the clamping arms 343 and the extending direction of the whole supporting leg 30 is a first extending angle a, and the range of the first extending angle a is 65 degrees to 115 degrees. In the embodiment shown in fig. 1d, the first extension angle a preferably ranges from 80 degrees to 100 degrees.

Meanwhile, referring to fig. 1f, the clamping arm 343 is configured to extend from the corresponding supporting leg 30 to the central axis of the clamping and positioning device. Thereby better realizing the positioning and supporting of the native valve and the artificial valve. On a plane where the group of clamping arms 343 are located and which vertically penetrates through the central axis of the clamping and positioning device, an included angle between a straight line where the clamping tips 3431 of the group of clamping arms 343 are located and a tangent line of the supporting leg 30 at the intersection of the ends of the clamping arms 343 is a second extension angle B, and the range of the second extension angle B is 15 degrees to 45 degrees. In the embodiment shown in fig. 1f, the second extension angle B preferably ranges from 20 degrees to 30 degrees.

In size ratio, the gripper arms 343 are elongate. The intersection of clamping arm 343 and support foot 30 has an overall maximum width dimension W1 and converges gradually as it moves away from support foot 30 into a clamping tip 3431. The clamping arm 343 extends from the support foot 30 by a length L3, wherein the ratio of W1 to L3 ranges from 0.125 to 0.5. In the embodiment shown in FIG. 1d, the ratio of W1 to L3 preferably ranges from 0.2 to 0.4.

In the projection direction of the central axis of the clamping and positioning device, the clamping tips 3431 of the clamping arms 343 are retracted by a distance L4 compared with the supporting legs 30, and the distance of the release gaps 3432 between the clamping tips 3431 of the group of clamping arms 343 is L5, wherein the ratio between L4 and L5 ranges from 0.1 to 0.5. In the embodiment shown in fig. 1f, the ratio between L4 and L5 ranges from 0.2 to 0.4.

The above description focuses on the arrangement details of the components, but the components of the clamping and positioning device in the present application also cooperate to form a spatial frame structure. In the overall configuration of the clamp positioning device, and with reference to one embodiment, the overall cylindrical structure is an hourglass shape with flared ends and a constricted waist 13, the support unit 20 is configured as follows:

the supporting unit 20 is provided at the waist 13; or

The support unit 20 is provided at one end of the lumbar portion 13 near the outflow side 12, and the support legs 30 are bent in the extending direction to form the lumbar portion 13.

Hourglass shape's centre gripping positioner can be better in the adaptation artificial valve cooperate with the life valve to ensure the location effect of self, bearing unit 20 sets up in waist 13 or close on in the cooperation of realization centre gripping positioner that waist 13 can be better and artificial valve, and both cooperate each other and ensure the stable cooperation between artificial valve and the native valve.

The application also discloses a prosthetic valve system, including the prosthetic valve that can inside and outside nestification and according to the centre gripping positioner among the above-mentioned technical scheme, the outflow side 12 of prosthetic valve has radial expanded structure, and a plurality of bearing unit 20 are fixed a position with expanded structure counterbalance.

The artificial valve is mainly matched with the clamping and positioning device through the self expansion structure, and the specific arrangement details of the clamping and positioning device can be referred to the above expression and are not unfolded.

From whole effect, this application passes through centre gripping positioner assistance-localization real-time artificial valve, can effectively improve the support location of artificial valve system and be convenient for implant the effect, promotes treatment, improves user experience.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features. When technical features in different embodiments are represented in the same drawing, it can be seen that the drawing also discloses a combination of the embodiments concerned.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application.

Claims

1. Intervene centre gripping positioner of valve for with the mode location artificial valve of components of a whole that can function independently, centre gripping positioner is the tubular structure, and the inside of tubular structure is artificial valve and places the district, has relative inflow side and outflow side in the axial of tubular structure, its characterized in that, centre gripping positioner includes:

2. The device of claim 1, wherein the arms are grouped in pairs, with corresponding arms extending from adjacent struts in opposite directions.

3. The clamping and positioning device for valve intervention according to claim 2, wherein on a plane where the clamping arms are arranged in groups and parallel to the central axis of the clamping and positioning device, an included angle between the extending direction of the clamping arms and the extending direction of the whole supporting foot is a first extending angle a, and the range of the first extending angle a is 65 degrees to 115 degrees.

4. The device for clamping and positioning an interventional valve as in claim 2, wherein the end of each clamping arm facing away from the support foot is gradually converging to a clamping tip.

5. The device of claim 4, wherein a release gap is left between each of the clamping arms for the native valve to deform.

6. The clamping and positioning device for the interventional valve as recited in claim 5, wherein on a plane where the clamping arms are arranged in groups and which passes through the central axis of the clamping and positioning device perpendicularly, an included angle between a straight line where the clamping tips of the groups of clamping arms are located and a tangent line of the supporting feet at the intersection of the ends of the clamping arms is a second extension angle B, and the second extension angle B ranges from 15 degrees to 45 degrees.

7. The interventional valve clamping and positioning device of claim 5, wherein the clamping tips of each clamping arm are spaced apart by a release gap of L5 relative to the support leg retraction distance L4, wherein the ratio between L4 and L5 is in the range of 0.1 to 0.5.

8. The device of claim 5, wherein the grasping arms are elongate; the clamping arm gradually converges to a clamping tip as the clamping arm moves away from the supporting leg.

9. The device for clamping and positioning the interventional valve as recited in claim 1, wherein the tubular structure has an overall hourglass shape with two ends flared and a waist necked; the bearer unit is arranged as follows:

the supporting unit is arranged at the waist; or

10. A prosthetic valve system comprising a valve prosthesis nestable inside and outside and a clamping and positioning device according to any one of claims 1 to 9, the outflow side of the valve prosthesis having a radially enlarged configuration, the plurality of retainer units being positioned against the enlarged configuration.