CN114129304A

CN114129304A - Tricuspid valve conveyor

Info

Publication number: CN114129304A
Application number: CN202111560219.3A
Authority: CN
Inventors: 罗健民; 金磊; 魏来; 杨晔; 陈云
Original assignee: Bairen Medical Jiangsu Co ltd
Current assignee: Bairen Medical Jiangsu Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-03-04

Abstract

The invention discloses a tricuspid valve conveyor, which comprises a conveying assembly, wherein the conveying assembly comprises an outer pipe, a middle pipe movably arranged in the outer pipe in a penetrating manner, and an inner pipe arranged in the middle pipe in a penetrating manner, the outer pipe comprises a first pipe layer and a second pipe layer embedded in the first pipe layer, the second pipe layer comprises a first section and a second section capable of being bent in an adjustable manner, the second section is fixedly connected with or integrally formed with the first section, the outer pipe on the tricuspid valve conveyor is opposite to a tricuspid valve of a heart through the second section in the second pipe layer in a small adjusting manner, the balloon can be ensured to be directly conveyed into the tricuspid valve, the tricuspid valve conveyor has good coaxiality, has good support performance under the impact of blood, avoids the tricuspid valve conveyor from touching and interfering peripheral blood vessels when the tricuspid valve conveyor is bent in a large adjusting manner, and can effectively prevent the balloon from being flushed out by the high-pressure blood of the tricuspid valve in the tricuspid valve, the burden of the patient is reduced, and the success rate of the operation is improved.

Description

Tricuspid valve conveyor

Technical Field

The invention relates to the technical field of medical instruments, in particular to a tricuspid valve conveyor.

Background

As shown in fig. 1, the heart 200 has four valves: an aortic valve 202 located on an aorta 201, a pulmonary valve 204 located on a pulmonary trunk 203, a mitral valve 207 located between a left atrium 205 and a left ventricle 206, and a tricuspid valve 210 located between a right atrium 208 and a right ventricle 209, wherein the aortic valve 202 and the pulmonary valve 204 control blood flow out of the ventricles, and the mitral valve 207 and the tricuspid valve 210 control blood flow from the ventricles to the ventricles, at present, most of valve diseases adopt a transvascular technique of delivering and implanting a prosthetic heart valve by using a soft catheter, as shown in fig. 2, a prosthetic valve 301 is installed at the end of the soft catheter of a delivery device 300 in a curling state, the soft catheter is advanced to an implantation position through a blood vessel of a patient, and the prosthetic valve 301 at the top end of the catheter is supported by expanding a balloon, so that the treatment efficiency can be effectively improved and the pain of the patient can be relieved; however, the tricuspid valve 210 is a right atrioventricular orifice, three triangular valves are attached to a fibrous stent ring made of dense connective tissue, as shown in fig. 1, the tricuspid valve 210 is located between the right atrium 208 and the right ventricle 209, a large amount of circulating blood flows from the right atrium 208 to the right ventricle 209 through the tricuspid valve 210, the tricuspid valve 210 has a corner extending from the femoral artery to the vein, the traditional delivery device 300 has an excessively large bending angle and cannot directly extend into the tricuspid valve 210 through the corner, an aligner is required for adjustment, the burden on the patient is increased, and due to the small supporting strength of the soft catheter of the delivery device 300, the balloon with the artificial valve 301 cannot extend into the inside of the tricuspid valve 210 under the impact of high-pressure blood flow, and is easily flushed out by the blood in the tricuspid valve 210, which results in an increased surgical risk, and is not beneficial to the treatment of the patient.

Disclosure of Invention

In view of the above, the present invention provides a tricuspid valve transporter to solve the above existing problems.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the utility model provides a tricuspid valve conveyer, includes conveying assembly, conveying assembly includes the outer tube, movably wears to establish intermediate tube in the outer tube, and wears to establish inner tube in the intermediate tube, the outer tube includes first pipe layer and inlays and establishes the intraformational second pipe layer of first pipe, the second pipe layer includes first section and the curved second section of adjustable, the second section with first section fixed connection or integrated into one piece.

Further, the first section and the second section are both braided tubes, the braiding density of the second section is less than that of the first section, and the length of the second section is 20-70mm

Further, the first section is for weaving the pipe, the second section is for cutting the pipe, it has a plurality of first cutting grooves and a plurality of second cutting groove to cut crisscross cutting on the lateral wall of pipe to cut, the width that the second cut groove is less than the width of first cutting groove, every the second cutting groove all sets up two between the first cutting groove, first cutting groove will cut the pipe cutting and form two first cutting sections and a plurality of second cutting sections, the width of second cutting section is less than first cutting section.

Furthermore, the notch of the second cutting groove is provided with a glue injection groove, and the glue injection groove is communicated with the second cutting groove.

Further, the outer diameter of the cutting pipe is 4.6-6.1mm, the inner diameter is 4.4-5.9mm, and the total length is 20-70 mm.

Further, the number of the first cutting sections is fifty five, the width of each first cutting section is 0.2-0.4mm, the width of each second cutting section is 0.8-1.5mm, and the width of the glue injection groove is 0.2-1.25 mm.

Further, the tricuspid valve transporter also comprises a handle and a support assembly, wherein the transport assembly is mounted on the handle, the transport assembly is partially arranged inside the handle, and the support assembly is mounted on the transport assembly.

Furthermore, a wire drawing and a fixing ring are further embedded in the tube wall of the outer tube, the fixing ring is arranged at one end, away from the handle, of the outer tube, one end of the wire drawing is fixedly arranged on the fixing ring, the other end of the wire drawing penetrates through the tube wall of the outer tube and extends into the handle, an adjusting piece is arranged in the handle, and the wire drawing is fixedly connected with the adjusting piece.

Further, the middle tube is slidably arranged inside the outer tube in a penetrating mode, one end of the middle tube penetrates through the outer tube and is arranged in the handle, and the other end of the middle tube penetrates through one end, far away from the handle, of the outer tube and extends to the outside of the outer tube.

Furthermore, one end of the inner tube penetrates through the middle tube and is arranged inside the handle, the other end of the inner tube penetrates through one end, far away from the handle, of the middle tube and extends to the outside of the middle tube, and a guide wire penetrates through the inside of the inner tube.

The invention has the beneficial effects that:

the invention provides a tricuspid valve conveyor, wherein an outer pipe comprises a first pipe layer and a second pipe layer embedded in the first pipe layer, the second pipe layer comprises a first section and a second section capable of being bent in an adjustable mode, the first section is a braided pipe, the second section is a braided pipe or a cutting pipe, when the second section is the braided pipe, the braiding density of the second section is smaller than that of the first section, good flexibility of the second section is guaranteed, and the bending of the second section is convenient to adjust; when the second section is a cutting pipe, a plurality of first cutting grooves for bending and a plurality of second cutting grooves for providing elasticity are cut in a staggered manner on the side wall of the cutting pipe, each second cutting groove is arranged between two first cutting grooves, and the first cutting grooves and the second cutting grooves on the cutting pipe are arranged in a staggered manner and the width of each second cutting section is smaller than that of each first cutting section, so that when the outer pipe in the conveying assembly is adjusted by the handle, the outer pipe can be bent along the first cutting grooves on the cutting pipe, and the second cutting grooves arranged in a staggered manner with the first cutting grooves can provide elasticity for the bent cutting pipe, so that the cutting pipe can be bent to a bending level of about 90 degrees in a small manner; the tricuspid valve conveyor has good coaxiality and good support performance under the impact of blood, avoids the contact and interference of the tricuspid valve conveyor with peripheral blood vessels when the tricuspid valve conveyor is bent greatly, can effectively prevent the balloon from being flushed out by high-pressure blood passing through the tricuspid valve in the tricuspid valve, lightens the burden of a patient, and improves the success rate of the operation.

Drawings

The invention is further illustrated by the following figures and examples.

FIG. 1 is a schematic diagram of the structure of a heart;

FIG. 2 is a schematic flow diagram of a conveyor operation of the prior art;

FIG. 3 is a perspective view of the tricuspid valve transporter of the present invention;

FIG. 4 is a cross-sectional view of a portion of the delivery assembly and support assembly of the tricuspid valve transporter of the invention shown in FIG. 3;

FIG. 5 is an enlarged view taken at A of FIG. 4;

FIG. 6 is a cross-sectional view of an alternate view of the outer tube of the delivery assembly of FIG. 4;

FIG. 7 is a cross-sectional view of a cross-section of the outer tube of the delivery assembly of FIG. 6;

FIG. 8 is a schematic view of the second section of the outer tube shown in FIG. 4 after bending the second tube layer of the cut tube;

FIG. 9 is a schematic perspective view of the developer ring in the outer tube of FIG. 8;

FIG. 10 is a schematic view of the second section of the outer tube shown in FIG. 4 after bending the second tube layer of the braided tube;

FIG. 11 is a comparison of the tri-cusped valve delivery device of the present invention and the prior art delivery device of FIG. 2 during bending.

In the figure: 100. a tricuspid valve delivery device, 1, a handle, 2, a delivery assembly, 21, an outer tube, 211, a first tube layer, 212, a second tube layer, 2121, a first segment, 2122, a second segment, 21221, a first cut groove, 21222, a second cut groove, 21223, a first cut segment, 21224, a second cut segment, 21225, a glue injection groove, 21226, a guide tab, 21227, a connecting tab, 2123, a visualization ring, 21231, a guide slot, 21232, a connecting slot, 2123, a visualization ring, 21231, a guide slot, 21232, a connecting slot, 213, a wiredrawing, 214, a retaining ring, 22, a middle tube, 23, an inner tube, 24, a guide wire, 3, a support assembly, 31, a support tube, 311, a jaw, 32, a balloon, 200, a heart, 201, an aorta, 202, an aortic valve, 203, a pulmonary trunk, 204, a pulmonary artery valve, 205, a left atrium, 206, a left ventricle, 207, a mitral valve, 208, a right atrium, 209, a tricuspid valve, 300, 301. a prosthetic valve.

Detailed Description

The present invention will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, and merely illustrates the basic structure of the present invention in a schematic manner, and therefore it shows only the constitution related to the present invention.

As shown in fig. 3, the present invention provides a tricuspid valve transporter 100 for delivering a valve stent into and expanding the valve stent in the tricuspid valve of a human heart, the tricuspid valve transporter 100 comprises a handle 1, a delivery assembly 2 mounted on the handle 1, and a support assembly 3 mounted on the delivery assembly 2, the delivery assembly 2 is partially disposed inside the handle 1, the handle 1 is used for adjusting the curvature of the delivery assembly 2, and the valve stent is sleeved on the support assembly 3.

As shown in fig. 3, 4 and 5, the conveying assembly 2 comprises an outer tube 21, an intermediate tube 22 inserted into the outer tube 21, and an inner tube 23 inserted into the intermediate tube 22; one end of the outer tube 21 is fixedly arranged inside the handle 1, the other end of the outer tube 21 is far away from the handle 1, the outer tube 21 comprises a first tube layer 211, a second tube layer 212 embedded in the first tube layer, a wire drawing 213 and a fixing ring 214, the fixing ring 214 is arranged at one end of the outer tube 21 far away from the handle 1, one end of the wire drawing 213 is fixedly arranged on the fixing ring 214, the other end of the wire drawing 213 penetrates through the tube wall of the outer tube 21 and extends into the handle 1, an adjusting part (not shown) for adjusting the bending degree of the outer tube 21 is arranged in the handle 1, and the wire drawing 213 is fixedly connected with the adjusting part; the middle tube 22 is slidably arranged inside the outer tube 21 in a penetrating manner, one end of the middle tube 22 penetrates through the outer tube 21 and is arranged in the handle 1, and the other end of the middle tube 22 penetrates through one end, far away from the handle 1, of the outer tube 21 and extends to the outside of the outer tube 21; one end of the inner tube 23 passes through the middle tube 22 and is arranged in the handle 1, the other end of the inner tube 23 passes through one end of the middle tube 22 far away from the handle 1 and extends to the outside of the middle tube 22, and a guide wire 24 passes through the inside of the inner tube 23.

As shown in fig. 6 and 7, the second tube layer 212 includes a first section 2121, a bendable second section 2122, and a developing ring 2123 mounted at one end of the second section 2122, the second section 2122 is fixedly connected to or integrally formed with the first section 2121, in this embodiment, the first tube layer 211 is a glue injection tube layer, the first section 2121 of the second tube layer is a woven tube, and the second section 2122 is a cut tube or a woven tube.

As shown in fig. 8, the second segment 2122 is the cut pipe, a plurality of first cut grooves 21221 for bending and a plurality of second cut grooves 21222 for providing elasticity are cut in a staggered manner on a side wall of the cut pipe, the width of each second cut groove 21222 is smaller than that of each first cut groove 21221, each second cut groove 21222 is arranged between two first cut grooves 21221, the first cut grooves 21221 cut the cut pipe to form two first cut sections 21223 and a plurality of second cut sections 21224, the width of each second cut section 21224 is smaller than that of each first cut section 21223, the second cut grooves 21222 are arranged on the first cut sections 21223 and the second cut sections 21224, notches of the second cut grooves 21222 are provided with glue injection grooves 21225 for injecting glue, and the glue injection grooves 21225 are communicated with the second cut grooves 21222; in this embodiment, the cutting tube has an outer diameter of 4.6-6.1mm, an inner diameter of 4.4-5.9mm, and a total length of 20-70mm, 35-80 first cutting segments 21223, each first cutting segment 21223 having a width of 0.2-0.4mm, two second cutting segments 21224 having a width of 0.8-1.5mm, and a glue injection groove 21225 having a width of 0.2-1.25 mm; one end of the cutting tube is provided with a guide 21226 for mounting the developing ring 2123 and a plurality of connecting pieces 21227, in this embodiment, the connecting pieces 21227 are three, and the length of the guide 21226 and the length of each of the plurality of connecting pieces 21227 are 1-2.5 mm.

As shown in fig. 8 and 9, the developing ring 2123 is substantially a ring-shaped structure, one end of the developing ring 2123 is connected to the fixing ring 214 inside the outer tube 21, a guide groove 21231 matched with the guide piece 21226 at one end of the cutting tube and a connection groove 212322 matched with the connection piece 21227 at one end of the cutting tube are formed in the ring wall of the developing ring 2123, the number of the connection grooves 212322 is the same as that of the connection pieces 21227, and the guide piece 21226 and the connection piece 21227 at one end of the cutting tube are respectively embedded in the guide groove 21231 and the connection groove 21232 of the developing ring 2123.

As shown in fig. 10, the second section 2122 is the braided tube, which has a braid density lower than that of the first section 2121, and has a length of 20-70 mm.

As shown in fig. 3 and 4, the supporting component 3 is fixedly installed at one end of the middle tube 22 far away from the handle 1, the supporting component 3 includes a supporting tube 31 and a balloon 32 sleeved on the supporting tube 31, the supporting tube 31 is communicated with the middle tube 22, the balloon 32 is communicated with the supporting tube 31, two opposite claws 311 are arranged on the supporting tube 31, both claws 311 are arranged inside the balloon 32, one end of the inner tube 23 far away from the handle 1 penetrates through the inside of the supporting tube 31 and extends to the outside of the supporting tube 31, the guide wire 24 extends to the outside of the inner tube 23, and the balloon 32 is sleeved with the heart valve stent.

When the device is used, a guide wire 24 with certain hardness is arranged in the handle 1 along the inner tube 23 in a penetrating manner and is conveyed to one end, far away from the handle 1, of the inner tube 23, the heart valve stent is tightly sleeved on the balloon 32 in a penetrating manner, the heart valve stent is clamped between the two clamping claws 311, the tricuspid valve conveyor 100 provided with the heart valve stent is conveyed into a patient body through the conveying assembly 2, when the heart valve stent is close to the heart of the patient, the heart valve stent is slowly conveyed and is conditioned by the adjusting piece in the handle 1, the adjusting piece pulls the wire drawing 213 in the wall of the outer tube 21, the wire drawing 213 drives the middle tube 22 and the inner tube 23 to bend through the cutting tube in the outer tube 21, when the heart valve stent is aligned with the heart operation position, the adjusting piece in the handle 1 is adjusted, and the middle tube 22 and the inner tube 23 on the conveying assembly 2 move to the position of the tricuspid valve in the length direction of the outer tube 21 by the adjusting piece, after the saccule 32 sleeved with the cardiac valve stent enters a cardiac valve, an injector is used for injecting gas and normal saline into the middle tube 22, the gas and the normal saline are conveyed into the saccule 32 through the middle tube 22 and the supporting tube 31 to expand the saccule 32, the saccule 32 is expanded to open the cardiac valve stent to complete the operation, after the operation is completed, the gas and the normal saline in the saccule 32 are slowly pumped out through the injector to separate the saccule 32 from the cardiac valve stent, and then the handle 1 is slowly adjusted to separate the conveying assembly 2 from a patient.

According to the tricuspid valve transporter 100 provided by the invention, the outer tube 21 comprises a first tube layer 211 and a second tube layer 212 embedded in the first tube layer 211, the second tube layer 212 comprises a first section 2121 and a second section 2122 capable of being bent in an adjustable mode, the first section 2121 is a braided tube, the second section 2122 is a braided tube or a cutting tube, when the second section 2122 is the braided tube, the braiding density of the second section 2122 is smaller than that of the first section 2121, the second section 2122 is ensured to have good flexibility, and the second section 2122 is convenient to be bent; when the second segment 2122 is a cut pipe, a plurality of first cut grooves 21221 for bending and a plurality of second cut grooves 21222 for providing elasticity are alternately cut on the side wall of the cut pipe, each second cut groove 21222 is arranged between two first cut grooves 21221, the width of the second cut groove 21222 is smaller than the width of the first cut groove 21221, because the first cut grooves 21221 and the second cut grooves 21222 on the cut pipe are alternately arranged, and the width of the second cut section 21224 is smaller than the width of the first cut section 21223, when the handle 1 adjusts the outer pipe 21 in the conveying assembly 2, the outer pipe 21 bends along the first cut grooves 21221 on the cut pipe, and the second cut grooves 21222 alternately arranged with the first cut grooves 21221 can provide elasticity for the bent cut pipe, so that the cut pipe can be bent to a bending level of about 90 °; the outer tube 21 on the tricuspid valve conveyor 100 is bent and bent in a small way through the second section 2122 of the second tube layer 212 to face the tricuspid valve of the heart, so that the balloon 32 can be directly conveyed into the tricuspid valve, the balloon 32 is effectively prevented from being flushed out by high-pressure blood passing through the tricuspid valve in the tricuspid valve, the burden of a patient is relieved, and the success rate of the operation is improved.

In light of the foregoing description of preferred embodiments in accordance with the invention, it is to be understood that numerous changes and modifications may be made by those skilled in the art without departing from the scope of the invention. The technical scope of the present invention is not limited to the contents of the specification, and must be determined according to the scope of the claims.

Claims

1. A tricuspid valve transporter, characterized in that: including conveying assembly, conveying assembly includes the outer tube, movably wears to establish intermediate tube in the outer tube to and wear to establish inner tube in the intermediate tube, the outer tube includes the first pipe layer and inlays and establishes the intraformational second pipe layer of first pipe, the second pipe layer includes first section and the curved second section of adjustable, the second section with first section fixed connection or integrated into one piece.

2. The tricuspid valve transporter according to claim 1, wherein: the first section and the second section are both braided tubes, the braiding density of the second section is smaller than that of the first section, and the length of the second section is 20-70 mm.

3. The tricuspid valve transporter according to claim 1, wherein: the first section is for weaving the pipe, the second section is for cutting the pipe, it has a plurality of first cutting grooves and a plurality of second cutting groove to cut crisscross cutting on the lateral wall of pipe, the width that the second cut groove is less than the width of first cutting groove, every the second cuts the groove and all sets up two between the first cutting groove, first cutting groove will cut the pipe cutting and form two first cutting sections and a plurality of second cutting section, the width of second cutting section is less than first cutting section.

4. The tricuspid valve transporter according to claim 3, wherein: and the notch of the second cutting groove is provided with a glue injection groove, and the glue injection groove is communicated with the second cutting groove.

5. The tricuspid valve transporter according to claim 2, wherein: the outer diameter of the cutting pipe is 4.6-6.1mm, the inner diameter is 4.4-5.9mm, and the total length is 20-70 mm.

6. The tricuspid valve transporter according to claim 3, wherein: the number of the first cutting sections is fifty five, the width of each first cutting section is 0.2-0.4mm, the width of each second cutting section is 0.8-1.5mm, and the width of the glue injection groove is 0.2-1.25 mm.

7. The tricuspid valve transporter according to claim 1, wherein: the tricuspid valve transporter further comprises a handle and a support assembly, wherein the transport assembly is mounted on the handle, the transport assembly is partially arranged inside the handle, and the support assembly is mounted on the transport assembly.

8. The tricuspid valve transporter according to claim 7, wherein: still inlay in the pipe wall of outer tube and be equipped with wire drawing and solid fixed ring, gu fixed ring sets up the outer tube is kept away from the one end of handle, the one end of wire drawing is fixed to be set up gu fixed ring is last, the other end of wire drawing passes the pipe wall of outer tube extends to in the handle, be provided with the regulating part in the handle, the wire drawing with regulating part fixed connection.

9. The tricuspid valve transporter according to claim 7, wherein: the middle tube is slidably arranged inside the outer tube in a penetrating mode, one end of the middle tube penetrates through the outer tube and is arranged in the handle, and the other end of the middle tube penetrates through one end, far away from the handle, of the outer tube and extends to the outside of the outer tube.

10. The tricuspid valve transporter according to claim 7, wherein: one end of the inner tube penetrates through the middle tube and is arranged in the handle, the other end of the inner tube penetrates through one end, far away from the handle, of the middle tube and extends to the outside of the middle tube, and a guide wire penetrates through the inside of the inner tube.