CN211383386U

CN211383386U - Balloon catheter for aortic valve expansion

Info

Publication number: CN211383386U
Application number: CN201922141505.0U
Authority: CN
Inventors: 刘洪亚; 虞奇峰
Original assignee: Shanghai Newmed Medical Co Ltd
Current assignee: Shanghai Newmed Medical Co Ltd
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2020-09-01
Anticipated expiration: 2029-12-04

Abstract

A sacculus pipe for aortic valve expansion, includes outer tube, inner tube, tee bend tailstock and sacculus, the inner tube passes the outer tube, and the one end of inner tube and outer tube with tee bend tailstock is connected, the other end of outer tube is connected to the one end of sacculus, the other end of sacculus is connected at the other end of inner tube, makes the sacculus parcel in outside the inner tube, the utility model discloses through designing the dustcoat, make dustcoat both ends form the compact mesh column structure, the centre forms the capture mouth that the aperture is far greater than the calcification particle size, on the one hand can be when the sacculus pressurizes, restraint the sacculus, make the sacculus after pressurizing can not produce the dog bone phenomenon, on the other hand, the calcification gets into and catches the mouth after the sacculus pressure release, the compact portion at both ends wraps up the calcification between sacculus and dustcoat, finally takes along with the sacculus pipe together, reducing the risk of complications such as cerebral apoplexy.

Description

Balloon catheter for aortic valve expansion

Technical Field

The utility model relates to a blood vessel intervenes treatment technical field, especially relates to a sacculus pipe for aortic valve expansion.

Background

Aortic stenosis is a common heart valve disease of old people, for a serious aortic valve disease, the treatment is performed by a surgical aortic valve replacement operation in the past, but the trauma of the surgical operation is large, the transcatheter aortic valve implantation has the characteristics of small trauma and low risk, and the method brings good news to patients with the serious aortic valve stenosis, particularly patients who cannot tolerate an open chest operation. Aortic balloon dilation, which has become a step in transcatheter aortic valve implantation, reduces aortic stenosis by tearing the valve interface to increase valve mobility, increasing the area of the valve orifice, and may be used alone with an aortic balloon dilation catheter. At present, the aorta sacculus expansion pipe that the market used mainly is Z-MED sacculus pipe and Tyshak II sacculus pipe, meets the aortic valve that calcification is serious, and lesion department calcification is serious, needs earlier expand lesion department with small dimension sacculus pipe, then uses the sacculus pipe expansion that the specification is big a little, probably needs sacculus expansion many times, complex operation to sacculus dog bone warp seriously in the sacculus pipe expansion process, and calcified material probably drops and arouses complications such as cerebral apoplexy. The existing balloon catheter can not well bring out calcifications dropped from the blood vessel when passing through the blood vessel wall, so that the risk of cerebral apoplexy is increased, and the balloon catheter for aortic valve dilatation is provided.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to solve the technical problem that current sacculus pipe can not take out the calcification thing on the vascular wall, provide a sacculus pipe for aortic valve expansion.

The utility model provides a technical scheme as follows:

the utility model provides a sacculus pipe for aortic valve expansion, includes outer tube, inner tube, tee bend tailstock and sacculus, the inner tube passes the outer tube, just the one end of inner tube and outer tube with the tee bend tailstock is connected, the other end at the outer tube is connected to the one end of sacculus, the other end at the inner tube is connected to the other end of sacculus, makes the sacculus cover is established outside the inner tube, still include the dustcoat, the dustcoat parcel is in outside the sacculus, just the both ends of dustcoat are connected the both ends of sacculus make the calcification that the middle part of dustcoat formed and has a plurality of meshs form catches the mouth, the both ends outer wall of dustcoat is compact portion to the calcification of parcel capture.

In this technical scheme, through setting up the dustcoat, make dustcoat both ends form the compact mesh column structure, the centre forms the calcification and catches the mouth, pressurize the sacculus, sacculus after the inflation will be extruded from catching the mouth and carry out the adherence support to the vascular wall, the dustcoat retrains the sacculus both ends, dog bone phenomenon not only can not appear, the plaque of pathological change position can also be got rid of simultaneously, and when the sacculus pressure release, the sacculus is at first shrink, shrink behind the dustcoat, can catch the calcification material that the sacculus expansion process drops, calcification in the blood vessel gets into the sacculus and weaves the gap between the mouth from the calcification, treat the dustcoat shrink back, wrap up the calcification, it is external along with the sacculus pipe is taken out together, reduce the emergence of complications such as cerebral apoplexy.

Preferably, the outer cover comprises a metal support, the peripheral walls of the two ends of the metal support are of dense mesh-shaped structures, the middle part of the metal support is provided with a plurality of mesh-shaped calcification capturing openings, and the aperture of meshes at the two ends is smaller than that of meshes in the middle part.

In the technical scheme, the metal support is formed by weaving metal wires, dense meshes are formed at two ends of the metal support, the middle metal wires are criss-cross to form a capture port, and therefore the metal support not only can play a role in restraining, but also can play a role in capturing calcifications.

Preferably, the outer cover comprises a woven fabric, two ends of the woven fabric are connected with two ends of the balloon, and the peripheral wall of the middle part of the woven fabric is provided with a plurality of porous calcification capturing openings.

Preferably, the outer cover comprises a metal bracket and two pieces of woven cloth, the two pieces of woven cloth are respectively connected to the peripheral walls of the two ends of the metal bracket to form a calcification capturing port with a mesh shape in the middle, and the two ends of the metal bracket are connected to the balloon through the woven cloth.

Preferably, the outer cover comprises a metal support and two woven fabrics, the two woven fabrics are connected through the metal support, the two woven fabrics are respectively connected to two ends of the balloon to form a cylindrical structure sleeved outside the balloon, and the metal support is provided with a calcification capturing port.

Preferably, the wires on the metal stent in the middle of the balloon are criss-crossed to form a calcification capture port.

Preferably, the woven fabric is connected to the inner wall periphery or the outer wall periphery of the two ends of the metal bracket.

Preferably, the connection mode of the woven fabric and the metal bracket is welding or sewing.

In this technical scheme, weave through the welding or sew up on metal support, metal support's both ends are fixed at the both ends of sacculus through weaving, weave more closely with the material of sacculus, and welded sacculus pipe intensity is high, and is direct with the wire with the sacculus welding together among the prior art, and connected mode among this technical scheme makes the sacculus can be better after the expansion play the restraint effect, is difficult to appear the cracked risk of sacculus expansion back wire.

Preferably, the method further comprises the following steps:

the tip part is connected with the inner tube and one end, far away from the three-way tailstock, of the balloon;

and the developing ring is connected with one section of outer wall of the inner tube, which is positioned in the balloon.

Compared with the prior art, the utility model provides a pair of a balloon catheter for aortic valve expansion embodiment has following beneficial effect:

1. the utility model discloses a design the dustcoat, it forms the compact mesh column structure to dustcoat both ends, the centre forms the aperture and is greater than the seizure mouth of calcification thing particle diameter far away, on the one hand can be when the sacculus pressurizes, become restraint to the sacculus, make the sacculus after the pressurization can not produce the dog bone phenomenon, on the other hand, calcification thing entering seizure mouth after the sacculus pressure release, the fine and close portion at both ends wraps up the calcification thing between sacculus and dustcoat, finally take out along with the sacculus pipe together, reduce the emergence risk of brain stroke medium complication.

2. The utility model discloses a weave through the installation at metal support's both ends in some embodiments, install metal support outside the sacculus, weave and be close with the material of sacculus, in the welded time, weave with the both ends of sacculus welding very fast together, sacculus pipe intensity after the installation is higher, for current sacculus pipe, be through wire and sacculus welding together, like this after the sacculus expansion, because the material of sacculus is different with the material of wire, the post-weld intensity is not high, the cracked risk of wire appears easily after the sacculus expansion.

3. The utility model discloses an install at the metal support both ends and weave to installation that can be very fast in the installation metal support because the material of weaving with the sacculus is close, welding that can be very fast in the welded is in the same place, and is easier for wire and sacculus welding.

Drawings

The above features, technical features, advantages and implementations of a balloon catheter for aortic valve dilation are further described in the following detailed description of preferred embodiments in a clearly understandable manner, in conjunction with the accompanying drawings.

Fig. 1 is a schematic structural view of an embodiment of a balloon catheter for aortic valve dilation according to the present invention;

fig. 2 is a schematic structural view of another embodiment of a balloon catheter for aortic valve dilatation according to the present invention;

fig. 3 is a schematic structural view of another embodiment of a balloon catheter for aortic valve dilatation according to the present invention;

fig. 4 is a schematic structural view of another embodiment of a balloon catheter for aortic valve dilatation according to the present invention;

FIG. 5 is a schematic cross-sectional view A-A of FIG. 4;

fig. 6 is a schematic structural view of another embodiment of a balloon catheter for aortic valve dilatation according to the present invention;

fig. 7 is a schematic sectional view B-B of fig. 6.

The reference numbers illustrate: the device comprises a tip part 1, a woven fabric 2, a developing ring 3, a balloon 4, a metal support 5, an inner tube 6, an outer tube 7 and a three-way tailstock 8.

Detailed Description

In order to more clearly illustrate embodiments of the present invention or technical solutions in the prior art, specific embodiments of the present invention will be described below with reference to the accompanying drawings. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be obtained from these drawings without inventive effort.

For the sake of simplicity, only the parts relevant to the invention are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".

According to an embodiment provided by the present invention, as shown in fig. 1-7, a balloon catheter for aortic valve dilation comprises an outer tube 7, an inner tube 6, a three-way tailstock 8 and a balloon 4, wherein the inner tube 6 passes through the outer tube 7, and one ends of the inner tube 6 and the outer tube 7 are connected to the three-way tailstock 8, when the catheter is implemented, one ends of the outer tube 7 and the inner tube 6 are both connected to the three-way tailstock and are fixed together by dispensing and curing, the other end of the inner tube 6 passes through the outer tube 7 and reaches the outside of the outer tube 7, one end of the balloon 4 is connected to the other end of the outer tube 7, and the other end of the balloon 4 is connected to the other end of the inner tube 6, so that the balloon 4 is sleeved outside the inner tube 6, the catheter further comprises an outer cover, the outer cover is similar to the balloon 4 and is wrapped outside the balloon 4 and is matched with, the outer cover can be better attached to the balloon 4, meanwhile, the outer cover can also restrain the balloon 4, so that the expanded balloon 4 cannot generate a dog bone phenomenon, when the balloon is installed, two ends of the outer cover are connected with two ends of the balloon 4, in the embodiment, the connection mode of the outer cover and two ends of the balloon 4 is not limited, only two ends of the balloon 4 are connected with the outer cover, a plurality of mesh-shaped calcification capturing openings are formed in the middle of the outer cover, outer walls of two ends of the outer cover are compact parts to wrap the captured calcification, when the balloon 4 is inflated and expanded, the expanded balloon 4 is extruded from the calcification capturing openings to carry out adherence support on a blood vessel wall, when the balloon 4 is decompressed and recovered, the balloon 4 can be contracted quickly, the contraction speed of the outer cover is slower than that of the balloon 4, at the moment, the calcification falls into the outer surface of the balloon 4 from the capturing openings, and the balloon is decompressed and contracted, causing the outer cover to contract as well, wrapping the calcification which falls into the capture port and then being taken out of the body along with the balloon 4.

Specifically, the surgical instrument further comprises a tip portion 1, the tip portion 1 is connected with one ends, far away from a tee tail seat 8, of the inner tube 6 and the balloon 4, the tip portion 1 is connected with the inner tube 6 based on the balloon 4 in a welding mode, and the tip portion 1 is beneficial to passing through blood vessels and crossing valves during surgery. The connection of the balloon 4 to the outer tube 7 and the balloon 4 to the tip portion 1 is made by welding so that the connection is more secure. The outer wall of the inner tube 6 in the saccule 4 is connected with a developing ring 3 so that the doctor can conveniently observe the operation.

As shown in fig. 1, in another embodiment of the present invention, the outer cover includes a metal support 5, the metal support 5 is formed by weaving metal wires, the peripheral wall of the metal support 5 formed by weaving metal wires at both ends is a dense mesh structure, so that the mesh aperture of the metal support 5 woven at both ends is smaller than the aperture of the calcification capturing port, a plurality of mesh calcification capturing ports woven by metal wires at the middle part are provided, the aperture of the mesh at the middle part is much larger than the particle size of the calcification, and the dense parts at both ends are connected to both ends of the balloon 4 by welding.

The metal wires on the metal bracket 5 positioned in the middle of the balloon 4 are criss-cross to form a calcification capturing opening with a mesh shape, and the metal wires are criss-cross to form meshes which are uniformly distributed, so that the expanded balloon 4 can be uniformly extruded, and the stress balance of the metal bracket 5 is ensured.

As shown in FIG. 2, in another embodiment of the present invention, the outer cover comprises a woven fabric 2, two ends of the woven fabric 2 are connected with two ends of the balloon 4, and the peripheral wall of the middle part of the woven fabric 2 is provided with a plurality of hole-shaped calcification capturing openings, in the specific implementation, the material of the fabric 2 is selected to be close to the balloon 4, and the elasticity of the fabric 2 is ensured to be weaker than that of the balloon 4, when welding, because the materials are close, the two are easy to be welded together, the strength after welding is high, meanwhile, the calcification capturing openings are uniformly distributed on the peripheral wall of the outer cover, the expanded saccule 4 can be extruded out from the capture port, the outer cover is stressed evenly and is not easy to damage, meanwhile, the effect of wall-attached support is ensured, the compact parts at the two ends of the woven fabric 2 are provided with meshes smaller than the meshes for catching calcifications, in this way, in use, the calcification can be enclosed between the gap between the fabric 2 and the balloon 4.

In another embodiment of the present invention, the outer cover comprises a metal support 5 and two fabric 2, the two fabric 2 are respectively connected to the two end walls of the metal support 5, a mesh-shaped calcification capture port is formed in the middle, the two ends of the metal support 5 are connected to the balloon 4 through the fabric 2, in the specific implementation, the fabric 2 is connected to the inner wall periphery or the outer wall periphery of the two ends of the metal support 5, in the specific implementation, the fabric 2 is connected to the inner wall of the metal support 5 (as shown in fig. 6-7), or the fabric 2 is connected to the outer wall of the metal support 5 (as shown in fig. 4-5), in the present embodiment, the fabric 2 is connected to the inner wall of the metal support 5, the connection between the fabric 2 and the metal support 5 is welding or sewing, and in the present embodiment, and the connection between the metal support 5 and the balloon 4 is connected through the fabric 2 connected to the balloon 4 on the metal support 5 The metal wires on the metal support 5 positioned in the middle of the balloon 4 are criss-cross to form a calcification capturing port with a mesh shape, and the calcification capturing ports are uniformly distributed on the peripheral wall of the outer cover, so that the balloon 4 inflated by pressurizing can be uniformly extruded, the metal support 5 can be stressed in balance, and other deformations are not excessively extended in the embodiment.

As shown in fig. 3, in another embodiment of the present invention, the outer cover includes a metal support 5 and two fabric 2, the two fabric 2 are connected through the metal support 5, the metal support 5 is located in the middle, when implementing specifically, the connection mode of the fabric 2 and the metal support 5 is welding or sewing, in this embodiment, the sewing mode is adopted, and the two fabric 2 are respectively connected to two ends of the balloon 4 to form a tubular structure sleeved outside the balloon 4, and the metal wires on the metal support 5 located in the middle of the balloon 4 are criss-cross to form a mesh-shaped calcification capturing port.

The woven fabric in the above embodiment may be one of polyamide, polyether block polyamide, polypropylene, etc., and the specific choice of the woven fabric in the above embodiment is not limited too much, so as to satisfy the connection with the balloon and enhance the connection effect.

It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A sacculus pipe for aortic valve expansion comprises an outer pipe, an inner pipe, a three-way tailstock and a sacculus, wherein the inner pipe penetrates through the outer pipe, one ends of the inner pipe and the outer pipe are connected with the three-way tailstock, one end of the sacculus is connected with the other end of the outer pipe, the other end of the sacculus is connected with the other end of the inner pipe, so that the sacculus is sleeved outside the inner pipe,

the balloon is characterized by further comprising an outer cover, the outer cover is wrapped outside the balloon, two ends of the outer cover are connected to two ends of the balloon, a plurality of mesh-shaped calcification capturing openings are formed in the middle of the outer cover, and outer walls of two ends of the outer cover are dense parts to wrap captured calcification.

2. A balloon catheter for aortic valve dilation as recited in claim 1, wherein: the outer cover comprises a metal support, the peripheral walls of two ends of the metal support are of compact mesh structures, the middle part of the metal support is provided with a plurality of mesh calcification capturing openings, and the aperture of meshes at two ends is smaller than that of meshes in the middle part.

3. A balloon catheter for aortic valve dilation as recited in claim 1, wherein: the outer cover comprises woven cloth, two ends of the woven cloth are connected with two ends of the balloon, and the peripheral wall of the middle part of the woven cloth is provided with a plurality of porous calcification capturing openings.

4. A balloon catheter for aortic valve dilation as recited in claim 1, wherein: the outer cover comprises a metal support and two woven fabrics, the two woven fabrics are respectively connected to the peripheral walls of the two ends of the metal support to form a calcification capturing opening with a mesh shape in the middle, and the two ends of the metal support are connected to the balloon through the woven fabrics.

5. A balloon catheter for aortic valve dilation as recited in claim 1, wherein: the outer cover comprises a metal support and two woven fabrics, the two woven fabrics are connected through the metal support, the two woven fabrics are respectively connected to two ends of the balloon to form a cylindrical structure sleeved outside the balloon, and the metal support is provided with a calcification capturing opening.

6. A balloon catheter for aortic valve dilation according to any one of claims 2, 4 or 5, wherein: the metal wires on the metal bracket positioned in the middle of the balloon are criss-cross to form a calcification capture port.

7. The balloon catheter for aortic valve dilation as recited in claim 4, wherein: the periphery sides of the inner walls or the periphery sides of the outer walls of the two ends of the metal support are connected with the woven cloth.

8. A balloon catheter for aortic valve dilation according to any one of claims 4 or 5, wherein: the woven fabric and the metal bracket are connected in a welding or sewing mode.

9. The balloon catheter for aortic valve dilation as recited in any one of claims 1-5, wherein: the calcification capturing openings are uniformly distributed on the peripheral wall of the outer cover.

10. The balloon catheter for aortic valve dilation of claim 1, further comprising: