CN212592570U - Prosthetic devices of valve leaflet - Google Patents
Prosthetic devices of valve leaflet Download PDFInfo
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- CN212592570U CN212592570U CN202021192691.7U CN202021192691U CN212592570U CN 212592570 U CN212592570 U CN 212592570U CN 202021192691 U CN202021192691 U CN 202021192691U CN 212592570 U CN212592570 U CN 212592570U
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Abstract
The utility model discloses a repair device for valve leaflets, which comprises a tightening device, a crushing device and a conveying device; the conveying device comprises a guide rod, a guide sleeve and an outer sleeve, the guide rod is sleeved in the guide sleeve, the guide sleeve is sleeved in the outer sleeve, the tightening device comprises a tightening head, a first elastic piece, a second elastic piece, a tightening tail and a clamping ring, the tightening head and the clamping ring are sleeved on the guide rod, the tightening tail is fixedly connected with the guide rod, the tightening head is connected with one end of the clamping ring through the first elastic piece, and the other end of the clamping ring is connected with the tightening tail through the second elastic piece; the crushing device comprises a claw-shaped support, a support frame is hinged in the claw-shaped support, a support head is hinged at the bottom of the claw-shaped support, a tightening sleeve is hinged at the bottom of the support frame, the support head is sleeved on the guide sleeve, and the tightening sleeve is fixedly connected with one end of the guide sleeve.
Description
Technical Field
The utility model relates to the technical field of medical equipment, concretely relates to prosthetic devices of valve leaflet.
Background
Valves are membranous structures that can be opened and closed inside the organs of humans or some animals. Fig. 1A shows a simplified view of a normal valve. Each individual has four valves in the heart. Namely, the aortic valve, which joins the left ventricle and the aorta, the pulmonary valve, which joins the right ventricle and the pulmonary artery, the mitral valve, which joins the left atrium and the left ventricle, and the tricuspid valve, which joins the right atrium and the right ventricle. They all act as one-way valves, allowing blood to flow only from one direction to the other, but not back.
Calcified valvular heart disease is a valvular heart disease characterized mainly by degenerative changes, thickening and fibrosis and calcification of the valve connective tissue, which in turn leads to abnormalities in the function of the valve and its stent. The influence of long-term hemodynamic impact on the valve and its fibrous scaffold is an important factor causing valve calcification, and may also be related to age, sex, hypertension, diabetes, decalcification of bone, smoking, dyslipidemia, etc., as shown in fig. 1B, which is a simplified diagram of a calcified valve, wherein the hatched area represents the calcified area. Diseases such as mitral valve prolapse and chronic renal insufficiency may also be the factors that contribute to the development of the disease.
There is no effective drug treatment for valvular calcification. Patients try calcium antagonists to block the deposition of calcium on the vascular wall, but the effect is not obvious; when the aortic valve is seriously damaged and can not be repaired, aortic valve replacement is required, and a disc-type mechanical valve or a biological valve can be selected; while valve replacement surgery is complicated and expensive. And has great damage to the body of the patient. When an intervention valve is selected, due to limited durability, if the biological valve is implanted in a patient with a long life expectancy, the valve risks deterioration, requiring a new valve to be implanted in the first valve.
TAVR procedures require a relatively thick catheter, which may lead to vascular complications, which may not be possible at all in some patients. Furthermore TAVR may lead to neurological complications such as stroke.
Therefore, in view of the above technical problems, the present invention provides a prosthetic device for a valve leaflet.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a repair device for valve and valve leaflet aiming at the defects of the prior art.
In order to realize the above purpose, the utility model adopts the following technical scheme:
a repair device for valve leaflets comprises a tightening device, a crushing device and a conveying device; the conveying device comprises a guide rod, a guide sleeve and an outer sleeve, wherein the guide rod is sleeved in the guide sleeve, and the guide sleeve is sleeved in the outer sleeve;
the tightening device comprises a tightening head, a first elastic piece, a second elastic piece, a tightening tail and a clamping ring, the tightening head and the clamping ring are sleeved on the guide rod, the tightening tail is fixedly connected with the guide rod, the tightening head is connected with one end of the clamping ring through the first elastic piece, and the other end of the clamping ring is connected with the tightening tail through the second elastic piece; when the tightening device is retracted in the coat, the first elastic piece and the second elastic piece are in a contracted state; when the tightening device is positioned outside the jacket, the first elastic piece and the second elastic piece are in an expansion state;
the crushing device comprises a claw-shaped bracket, a support frame is hinged in the claw-shaped bracket, a support head is hinged at the bottom of the claw-shaped bracket, a tightening sleeve is hinged at the bottom of the support frame, the support head is sleeved on a guide sleeve, and the tightening sleeve is fixedly connected with one end of the guide sleeve; when the crushing device is retracted in the outer sleeve, the tightening sleeve is close to the supporting head, so that the crushing device is in a retracted state; when the crushing device is positioned outside the outer sleeve, the tightening sleeve is far away from the supporting head, so that the crushing device is in an expansion state.
Further, conveyor tightens the stopper including tightening up, tighten up the stopper and set up between uide bushing and overcoat.
Further, the claw-shaped support comprises a connecting support and a crushing frame, one end of the connecting support is hinged to the supporting head, the other end of the connecting support is hinged to the crushing frame, and the other end of the connecting support is hinged to the supporting frame.
Furthermore, the crushing device also comprises a limiting ring, and a clamping groove for clamping the limiting ring is formed in the crushing frame, so that the limiting ring is clamped in the clamping groove; the material of the limiting ring comprises high polymer material and/or rubber.
Furthermore, the crushing device also comprises a developing structure, and the developing structure is arranged on the crushing frame; the developing structure is made of metal.
Furthermore, the one end of smashing the frame and keeping away from linking bridge is the arc angle, the one end that smashes the frame and be close to linking bridge contains the crushing head of smashing calcified tissue at least, smash the head and include blade, fine needle, unevenness's surface in one or more.
Further, the forming mode of the crushing device comprises one or more of laser integral forming, weaving, welding and anchoring; the wall thicknesses of the claw-shaped bracket, the support frame, the support head and the tightening sleeve in the crushing device are respectively 0.1-5 mm; the materials of the claw-shaped bracket, the support frame, the support head and the tightening sleeve in the crushing device are respectively metal and/or high polymer materials.
Further, the tightening device is an 8-shaped net structure comprising a first elastic part and a second elastic part, and the first elastic part and the second elastic part are opened in a self-expanding bracket or by mechanical force; the first elastic part and the second elastic part are formed in a mode of one or more of laser integrated forming, weaving, welding and anchoring, and the first elastic part and the second elastic part are made of one or more of stainless steel, nickel-titanium alloy, cobalt-chromium alloy and high polymer material.
Further, the tightening device adopts a balloon to replace the first elastic part and the second elastic part; the material of the balloon comprises one or more of nylon, PEBAX, PET and PU; the bursting pressure of the saccule is 2-20 atm; the thickness of the saccule is 0.01-1 mm.
Furthermore, the guiding device is also included, the guiding device at least comprises a guide wire connected with the guide rod, and the guiding device is made of flexible material.
Compared with the prior art, the utility model provides a miniature wound operation can effectively solve valve leaflet and take place some problems that the unable normal work of calcification back valve and produce. The device of the utility model can be contracted in a sheath tube with a diameter less than 6mm, and enter the valve through the blood vessel or the apex of the heart, and the valve leaflet is clamped by the tightening device and the crushing device to cut the valve leaflet. The area of the valve orifice is increased. Under DSA, the relative positions of the tightening device and the crushing device can be adjusted by observing the position of the developing point, and the valve leaflets can be clamped for multiple times. And finally obtaining the satisfactory valve orifice area.
Drawings
Fig. 1A is a schematic view of a normal valve provided by the present invention;
fig. 1B is a schematic view of a diseased (calcified) valve provided by the present invention;
FIG. 2 is a structural view of a prosthetic device for valve leaflets, according to one embodiment;
FIG. 3a is a schematic view of an initial installation configuration of a tightening mechanism and a crushing mechanism with both tightened and installed in a housing according to one embodiment;
FIG. 3b is a schematic structural diagram of a conveying apparatus according to an embodiment;
FIG. 4 is a schematic mechanical view of a tightening device according to an embodiment;
FIG. 5 is a schematic structural diagram of a crushing apparatus according to an embodiment;
FIG. 6 is a schematic view of the blades of the shredder mechanism in the shredder rack according to one embodiment;
FIG. 7 is a schematic view of a tightening mechanism to a shredding mechanism provided in accordance with one embodiment;
FIG. 8 is a schematic view of the first embodiment after clamping the valve;
FIG. 9 is a schematic diagram of a pulverization implementation provided in the first embodiment;
wherein, 10. tightening means; 101. tightening the head; 102. a first elastic member; 103. tightening the tail; 104. a clamping ring; 105. a second elastic member; 20. a crushing device; 201. a support head; 202. connecting a bracket; 203. a support frame; 204. a limiting ring; 205. tightening the sleeve; 206. a crushing frame; 207. a developing structure; 30. a conveying device; 301, a guide bar; 302. a guide sleeve; 303. a jacket; 304. tightening the limiting block; 40. a guide device; 50. a mitral valve; 50a, calcified sites; a. the bottom of the claw-shaped bracket; b. the bottom of the support frame; c. a circular arc angle; d. a pulverizing head.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
The term "comminution" refers to any type of size reduction or any change in shape or form, such as but not limited to crushing, grinding, cutting, fracturing, shredding, cutting, and the like. The specific meaning of the above terms can be understood by those of ordinary skill in the art as appropriate.
The utility model aims at providing a repair device for valve and valve leaflet aiming at the defects of the prior art.
As shown in fig. 1, panel a shows a schematic view of a normal valve; fig. B shows a schematic view of a diseased (calcified) valve, the shaded portion in fig. B being schematic of the lesion.
Example one
The present embodiment provides a repair device for valve leaflets, as shown in fig. 2, comprising a tightening device 10, a crushing device 20, and a delivery device 30; conveying the tightening device 10 and the crushing device 20 to a target position by the conveying device 30; the fastening device 10 is abutted against one surface of the valve leaflet according to the change of the shape of the fastening device 10, and the crushing component arranged on the crushing device 20 is abutted against the other surface of the valve leaflet, so that the fastening device 10 and the crushing device clamp the valve leaflet and repair the valve leaflet; the prosthetic device of this embodiment further includes a piercing guide 40 to assist the tightening device 10, the crushing device 20, and the delivery device 30 in stably and accurately reaching the target site to be repaired.
The device of the embodiment has a plurality of specifications, and according to the requirements of different patients, the diameter of the crushing device 20 after being expanded is 10mm-35mm, and the diameter of the tightening device 10 after being expanded is 9mm-34 mm.
The guiding device 40 at least comprises a guide wire connected with the guide rod, and the material of the guiding device is flexible. The guide is initially curved in shape and is intended to pass through the aortic arch (since it is curved) without causing damage to the heart, and when the procedure is completed, the guide becomes straight when the device is withdrawn, with the aim of providing a solution for withdrawal from the body. It should be noted that the guiding device is the prior art, and this embodiment is not described in detail.
As shown in fig. 3b, which is a schematic structural diagram of the conveying device 30, the conveying device 30 includes a guide rod 301, a guide sleeve 302, an outer sleeve 303, and a tightening stopper 304; the guide rod 301 is sleeved in the guide sleeve 302, the guide sleeve 302 is sleeved in the outer sleeve 303, and the tightening limiting block 304 is arranged between the guide sleeve 302 and the outer sleeve 303. In initial installation, as shown in FIG. 3a, both tightening device 10 and reducing device 20 are tightly installed in outer sleeve 303, and movement of tightening device 10 and reducing device 20 is limited by tightening stop 304.
As shown in fig. 4, which is a mechanism diagram of tightening device 10, tightening device 10 includes a tightening head 101, a first elastic member 102, a second elastic member 105, a tightening tail 103, and a clamping ring 104; the tightening head 101 and the clamping ring 103 are sleeved on the guide rod 301; the tightening tail 103 is fixedly connected with the guide rod 301; tightening head 101 is connected to one end of clamping ring 104 via a first elastic element 102, and the other end of clamping ring 104 is connected to tightening tail 103 via a second elastic element 105; when the tightening device 10 is retracted in the casing 303, the first elastic member 102 and the second elastic member 105 are in a contracted state; when the tightening device 10 is positioned outside the sheath 303, the first elastic member 102 and the second elastic member 105 are in an expanded state;
the tightening head 101 has a through hole in the center, the inner diameter of which coincides with the outer diameter of the guide rod 301, so that the tightening head 101 passes through the guide rod. The centre of the clamping ring 104 is provided with a through hole, the inner diameter of the through hole is larger than or equal to the outer diameter of the guide rod 301, so that the clamping ring 104 penetrates through the guide rod, and the tightening ring 104 can tighten the calcified valve in all directions when tightening, so that the crushing performance is better. The center of the tightening tail 103 is provided with a through hole, and the inner diameter of the through hole is consistent with the outer diameter of the guide rod 301, so that the tightening tail 103 penetrates through the guide rod; the tightening tail 103 is concentric with the central through hole of the tightening head 101; the outer end of the tightening tail 103 can be fixedly connected with the guide rod 301, and the connection mode can be interference connection, welding, bonding or threaded connection; this embodiment is preferably a threaded connection.
Tightening device 10 is a 8-shaped net structure comprising first elastic member 102 and second elastic member 105, and the opening manner of first elastic member 102 and second elastic member 105 includes self-expanding support or mechanical force opening; wherein the first elastic member 102 and the second elastic member 105 are formed by one or more of laser integration, weaving, welding and anchoring; the main bodies of the first elastic member 102 and the second elastic member 105 are several elastic metal wires which can only be bent outward after being heat-set, and the material thereof includes one or more of stainless steel, nickel-titanium alloy, cobalt-chromium alloy and polymer material, and may be stainless steel 316L, cobalt-chromium alloy or nickel-titanium alloy.
As shown in fig. 5, the crushing device 20 is a support structure, and the support structure is polygonal, circular, oval, etc., preferably polygonal. The bracket is formed by laser integrated molding, weaving, welding or anchoring. Preferably laser integrated. The wall thickness of the bracket is 0.1-5 mm.
The crushing device 20 comprises a claw-shaped support, a support frame 203 is hinged in the claw-shaped support, a support head 201 is hinged at the bottom a of the claw-shaped support, a tightening sleeve 205 is hinged at the bottom b of the support frame 203, the support head 201 is sleeved on a guide sleeve 302, and the tightening sleeve 205 is fixedly connected with one end of the guide sleeve 302; when the crushing device 20 is retracted in the outer sleeve 303, the tightening sleeve 205 is close to the support head 201, so that the crushing device 20 is in a retracted state; when the size reduction apparatus 20 is positioned outside the outer case 303, the tightening sleeve 205 is moved away from the support head 201 so that the size reduction apparatus 20 is in an expanded state.
In this embodiment, the claw type bracket includes a connection bracket 202 and a crushing frame 206, one end of the connection bracket 202 is hinged with the support head 201, the other end of the connection bracket 202 is hinged with the crushing frame 206, and the other end of the connection bracket 202 is also hinged with the support frame 203.
The center of the supporting head 201 is provided with a through hole, the inner diameter of the through hole is consistent with the outer diameter of the guide sleeve 302, the periphery of the supporting head 201 is connected with 3 connecting brackets 202, and the connecting modes of the supporting head 201 and the 3 connecting brackets 202 can be hinged, threaded and the like.
One end of each connecting bracket 202 is connected with the supporting head 201, the other end of each connecting bracket 202 is connected with the supporting frame 203, and the other end of each connecting bracket 202 (or one end of the supporting frame 203) is also connected with the crushing frame 206, wherein the connection mode can be hinged, threaded connection and the like.
One end of the support rod 203 is connected with the connecting bracket 202, and the other end is connected with the tightening sleeve 205, and the connection mode can be hinged connection, threaded connection and the like.
The inner diameter of the tightening sleeve 205 is consistent with the outer diameter of the guide sleeve 302, the tightening sleeve 205 is fixedly connected with the guide sleeve 302, and when the guide sleeve 302 moves, the tightening sleeve is driven to move forcefully to drive the crushing device 20 to move. The structure and the movement mode of the guide sleeve 302, the tightening sleeve 205 and the support frame 203 are similar to those of an umbrella framework.
One end of any crushing mechanism in the crushing frame 206 is respectively connected with the support frame 203, the connecting bracket 202 and the adjacent crushing mechanism, wherein the connection mode can be hinged connection, threaded connection and the like. The end of the crushing frame 206 away from the connecting frame 202 (or the adjacent crushing mechanism, or the supporting frame 203) is an arc angle (as shown in c of fig. 5), and the top end cannot be sharp, so as to avoid other injuries to the valve; the crushing rack 206 includes at least one crushing head (as shown at d in fig. 5) at an end thereof adjacent to the connecting bracket 202 (or adjacent crushing mechanism, or support 203) capable of crushing calcified tissue, as shown in fig. 6, including one or more of blades, fine needles, and uneven surfaces.
The middle of the crushing device 20 also comprises a limit ring 204, and a clamping groove for clamping the limit ring 204 is arranged on the crushing frame 206, so that the limit ring 204 is clamped in the clamping groove; the material of the stop collar may include a polymer material and/or rubber, which may limit the size of the cylindrical space formed by the crush frame 206.
The shredder 20 also includes a developing structure 207, which is generally any shredder mechanism mounted on the shredder rack 206, and can be used to determine the current running status of the shredder. The material of the developing structure 207 is metal, preferably platinum-iridium alloy; the material may show the relative position of the tightening device 10 and the comminution device 20 under Digital Subtraction Angiography (DSA).
The use method of the repair device for the valve leaflets comprises the following steps:
in an initial state, a guide rod 301 is adopted to sequentially penetrate through a tightening head 101, a clamping ring 104 and a tightening tail 103 of a tightening device 10, and the tightening tail 103 is fixed on the guide rod 301; then, the guide sleeve 302 is adopted to sequentially penetrate through the supporting head part 201 and the tightening sleeve 205 of the crushing device 20, the tightening sleeve 205 is fixed at one end of the guide sleeve 302, and the supporting head part 201 abuts against the tightening limiting block 304 to limit the movement of the crushing device 20; at this time, the tightening device 10 and the crushing device 20 are both tightened and installed in the outer sleeve 303; and the guide 40 is connected to one end of the guide bar 301 as shown in fig. 3 a.
When in use, the guiding device 40 brings the whole device to a target position (aortic valve), then the outer sleeve 303 is retracted, at this time, the first elastic element 102 and the second elastic element 105 of the tightening device 10 expand and expand through the change of the shapes of the two elastic elements, and then the guide sleeve 302 is pushed to drive the tightening sleeve 205 of the crushing device 20 to move, so that the crushing device is in an expanded form, at this time, the tightening limiting block 304 still limits the support head 201 of the crushing device 20, and the whole device is in a state shown in fig. 2; then the guiding rod 301 is controlled to move to control the retraction of the tightening device 10, when the retraction reaches a certain limit (i.e. the proper position of the mitral valve is reached), the tightening head 101 of the tightening device 10 abuts against the tightening sleeve 205 of the crushing device 20 to push the tightening sleeve 205 of the crushing device 20, so that the tightening head 101 of the tightening device 10 and the tightening sleeve 205 of the crushing device 20 are subjected to opposite forces, at which time the first elastic member 102 and the second elastic member 105 of the tightening device 10 are subjected to an opposite force of the tightening sleeve of the crushing device 20 to expand outwards to abut against one side of the mitral valve, the tightening sleeve 205 of the crushing device 20 is subjected to the force of the tightening head 101 of the tightening device 10 to inwardly gather the crushing frame 206 through the supporting frame 203 and the connecting frame 202 to abut against the other side of the mitral valve, so that the crushing device 20 and the tightening device 10 clamp the mitral valve, the effect of fig. 7 can be achieved by the two acting simultaneously.
In the operation of the device, the mitral valve is clamped through the above operations, as shown in fig. 8, wherein 50 is the mitral valve, at this time, the guide rod 301 can be moved to make the tightening head 101 of the tightening device 10 away from the tightening sleeve 205, and then the tightening device reaches the relaxed state, then the guide sleeve 302 is rotated to drive the rotation of the crushing device 20 to switch the part to be crushed on the mitral valve 50, at this time, the guide rod 301 is continuously moved to make the tightening head 101 abut against the tightening sleeve 205 to crush the calcified part, and the above crushing step is continued until the calcified part is completely crushed.
Fig. 9 shows 50a, which is a calcified part on the valve, and the mitral valve is clamped by the tightening device and the crushing device, so that the crushing of the calcified part is completed.
Compared with the prior art, the embodiment provides a miniature wound operation, which can effectively solve the problems caused by the fact that the valve cannot work normally after calcification of valve and valve leaflet occurs. The device of the utility model can be contracted in a sheath tube with a diameter less than 6mm, and enter the valve through the blood vessel or the apex of the heart, and the valve leaflet is clamped by the tightening device and the crushing device to cut the valve leaflet. The area of the valve orifice is increased. Under DSA, the relative positions of the tightening device and the crushing device can be adjusted by observing the position of the developing point, and the valve leaflets can be clamped for multiple times. And finally obtaining the satisfactory valve orifice area.
Example two
The present embodiment provides a prosthetic device for valve leaflets, which is different from the first embodiment in that:
the tightening device of the embodiment adopts the balloon to replace the first elastic member and the second elastic member.
Wherein the balloon material comprises a closed balloon formed by other materials such as nylon, PEBAX, PET or PU, the two ends of the balloon also comprise a tightening head and a tightening tail, and the connection mode is similar to the embodiment; the expansion of the balloon can be controlled by the injection amount of liquid such as physiological saline and the like injected into the balloon, so that the clamping force of the balloon and the crushing device on the valve can be controlled.
The bursting pressure of the saccule is 2-20atm, the thickness of the saccule is 0.01-1mm, and the saccule can be a cutting saccule.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (10)
1. A repair device for valve leaflets is characterized by comprising a tightening device, a crushing device and a conveying device; the conveying device comprises a guide rod, a guide sleeve and an outer sleeve, wherein the guide rod is sleeved in the guide sleeve, and the guide sleeve is sleeved in the outer sleeve;
the tightening device comprises a tightening head, a first elastic piece, a second elastic piece, a tightening tail and a clamping ring, the tightening head and the clamping ring are sleeved on the guide rod, the tightening tail is fixedly connected with the guide rod, the tightening head is connected with one end of the clamping ring through the first elastic piece, and the other end of the clamping ring is connected with the tightening tail through the second elastic piece; when the tightening device is retracted in the coat, the first elastic piece and the second elastic piece are in a contracted state; when the tightening device is positioned outside the jacket, the first elastic piece and the second elastic piece are in an expansion state;
the crushing device comprises a claw-shaped bracket, a support frame is hinged in the claw-shaped bracket, a support head is hinged at the bottom of the claw-shaped bracket, a tightening sleeve is hinged at the bottom of the support frame, the support head is sleeved on a guide sleeve, and the tightening sleeve is fixedly connected with one end of the guide sleeve; when the crushing device is retracted in the outer sleeve, the tightening sleeve is close to the supporting head, so that the crushing device is in a retracted state; when the crushing device is positioned outside the outer sleeve, the tightening sleeve is far away from the supporting head, so that the crushing device is in an expansion state.
2. The repair device for valve leaflets as claimed in claim 1, wherein the delivery device comprises a tightening stopper disposed between the guide sleeve and the outer sheath.
3. The prosthetic device for valve leaflets as claimed in claim 1, wherein the claw-shaped stent comprises a connecting stent and a crushing frame, one end of the connecting stent is hinged to the support head, the other end of the connecting stent is hinged to the crushing frame, and the other end of the connecting stent is further hinged to the support frame.
4. The repair device for valve leaflets, according to claim 3, characterized in that the crushing device further comprises a limiting ring, and the crushing frame is provided with a clamping groove for clamping the limiting ring, so that the limiting ring is clamped in the clamping groove; the material of the limiting ring comprises high polymer material or rubber.
5. The repair device for valve leaflets as claimed in claim 3, wherein the crushing device further comprises a developing structure disposed on the crushing frame; the developing structure is made of metal.
6. The repair device for valve leaflets as claimed in claim 5, wherein the end of the pulverizing frame far from the connecting stent is a circular arc angle, the end of the pulverizing frame near the connecting stent contains at least a pulverizing head for pulverizing calcified tissues, and the pulverizing head comprises one or more of blades, fine needles and uneven surfaces.
7. The repair device for valve leaflets as claimed in claim 1, wherein the pulverizing means is formed by one or more of laser integration, weaving, welding, anchoring; the wall thicknesses of the claw-shaped bracket, the support frame, the support head and the tightening sleeve in the crushing device are respectively 0.1-5 mm; the materials of the claw-shaped bracket, the support frame, the support head and the tightening sleeve in the crushing device are respectively metal and/or high polymer materials.
8. The repair device for valve leaflets, wherein the tightening device is a figure-8 net structure comprising a first elastic member and a second elastic member, and the first elastic member and the second elastic member are opened by a self-expanding stent or a mechanical force; the first elastic part and the second elastic part are formed in a mode of one or more of laser integrated forming, weaving, welding and anchoring, and the first elastic part and the second elastic part are made of one of stainless steel, nickel-titanium alloy, cobalt-chromium alloy and high polymer material.
9. The repair device for valve leaflets as claimed in claim 8, wherein the tightening device replaces the first and second elastic members with a balloon; the material of the balloon comprises one of nylon, PEBAX, PET and PU; the bursting pressure of the saccule is 2-20 atm; the thickness of the saccule is 0.01-1 mm.
10. The repair device for valve leaflets of any one of claims 1 to 9, further comprising a guide device, wherein the guide device comprises at least one guide wire connected to the guide rod, and the guide device is made of a flexible material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021192691.7U CN212592570U (en) | 2020-06-24 | 2020-06-24 | Prosthetic devices of valve leaflet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021192691.7U CN212592570U (en) | 2020-06-24 | 2020-06-24 | Prosthetic devices of valve leaflet |
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| Publication Number | Publication Date |
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| CN212592570U true CN212592570U (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021192691.7U Active CN212592570U (en) | 2020-06-24 | 2020-06-24 | Prosthetic devices of valve leaflet |
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| CN (1) | CN212592570U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111616836A (en) * | 2020-06-24 | 2020-09-04 | 科凯(南通)生命科学有限公司 | A repair device for valve leaflets |
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2020
- 2020-06-24 CN CN202021192691.7U patent/CN212592570U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111616836A (en) * | 2020-06-24 | 2020-09-04 | 科凯(南通)生命科学有限公司 | A repair device for valve leaflets |
| CN111616836B (en) * | 2020-06-24 | 2024-12-03 | 科凯(南通)生命科学有限公司 | A valve leaflet repair device |
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