CN110025874B

CN110025874B - Balloon dilatation catheter

Info

Publication number: CN110025874B
Application number: CN201910331580.5A
Authority: CN
Inventors: 肖建华; 王昂
Original assignee: GUANGZHOU QIJUN BIOTECHNOLOGY Co Ltd
Current assignee: GUANGZHOU QIJUN BIOTECHNOLOGY Co Ltd
Priority date: 2019-04-24
Filing date: 2019-04-24
Publication date: 2020-01-07
Anticipated expiration: 2039-04-24
Also published as: CN110025874A

Abstract

The invention provides a balloon dilatation catheter, which comprises an inner tube, a balloon, a stepped outer tube and a joint, wherein the stepped outer tube is arranged at the right end of the joint and extends into the joint, the inner tube is arranged in the stepped outer tube, the left end of the inner tube penetrates through the stepped outer tube and extends into the joint, the balloon is arranged at the right part of the annular outer end of the inner tube, the balloon is fixedly connected to the right end of the stepped outer tube, a pulling device is arranged at the right part of the annular outer end of the stepped outer tube, the pulling device is arranged at the annular outer end of the balloon, two indicating marks are fixed at the annular outer end of the inner tube, and the two indicating marks are arranged in the balloon, so that compared with the: the auxiliary contraction of the saccule is convenient, and the damage to the blood vessel when the saccule is pushed out is reduced.

Description

Balloon dilatation catheter

Technical Field

The invention relates to a balloon dilatation catheter, belonging to the technical field of dilatation of arterial stenosis.

Background

Balloon catheters originated in the 60's of the 20 th century. In 1963 Dotter inadvertently discovered that when peripheral arteries were cannulated, the catheter successfully performed abdominal aortic angiography through the stenotic obstructed iliac artery, giving him the idea that a flexible guidewire could be used to guide the catheter to directly and gradually dilate the stenotic artery.

When exiting after the existing balloon dilatation catheter is used, when filling liquid in the balloon needs to be pumped out firstly, proper anticlockwise rotation is generally needed in the exiting process, the balloon is convenient to be rolled up again, the passing diameter is reduced, and the risk of damaging blood vessels is reduced.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a balloon dilatation catheter to solve the problems that the balloon is not contracted in place when being taken out, the blood vessel is extruded and the damage is large in the background technology.

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a sacculus expands pipe, includes inner tube, sacculus, echelonment outer tube and joint, the echelonment outer tube is installed at the joint right-hand member and is extended to inside the joint, the inside inner tube that is equipped with of echelonment outer tube, the inner tube left end passes the echelonment outer tube and extends to inside the joint, inner tube annular outer end right part is equipped with the sacculus, sacculus fixed connection is at echelonment outer tube right-hand member, echelonment outer tube annular outer end right part is equipped with draws and rises the device, draw and rise the device and install in sacculus annular outer end, two fixed marks in inner tube annular outer end, two it all establishes inside the.

Further, the echelonment outer tube includes tubule and thick pipe, thick pipe is fixed at the tubule left end, tubule right-hand member and sacculus fixed connection, thick pipe left end extends to inside the joint.

Further, draw and rise the device and include elasticity ring, rubber pole, connecting rod, move ring and elasticity rope, two at least elasticity rings are fixed to sacculus annular outer end equidistance, two at least rubber poles are evenly fixed to elasticity ring annular outer end, rubber pole inner wall is fixed with two at least elasticity rings, and two at least rubber pole left ends all are equipped with the connecting rod, at least two the connecting rod is all installed and is being moved the ring right-hand member, move the ring suit and at least two move the ring left end and all fix two at least elasticity ropes, two at least elasticity rope all fixes at the tubule right-hand member, two at least elasticity rope all establishes at tubule annular outside.

Further, the joint comprises a guide wire through pipe and an inclined liquid injection pipe, the inclined liquid injection pipe is fixed at the upper end of the guide wire through pipe, the guide wire through pipe is communicated with the inside of the inner pipe, and the inclined liquid injection pipe is communicated with the inside of the stepped outer pipe.

Further, a second sealing element is fixed on the left wall inside the joint and is arranged at the annular outer end of the inner pipe.

Furthermore, a second sealing washer is arranged at the right part of the annular inner wall of the joint and is arranged at the annular outer end of the stepped outer pipe.

Further, the inner part of the inner pipe is processed into a hollow structure.

The invention has the beneficial effects that: when filling liquid is injected into the balloon through the stepped outer tube, the balloon is expanded to push the elastic ring and the rubber rod to move outwards and drive the moving ring to move rightwards, so that the elastic rope is stretched, the moving ring is hinged with the rubber rod through the connecting rod, so that the rubber rods in all directions synchronously move outwards to uniformly expand the balloon, and when the filling liquid in the balloon is extracted, the rubber rod moves inwards under the elastic action of the elastic rope to further compress the balloon to contract inwards, so that the balloon completely contracted has less damage to blood vessels, and the use safety is improved.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic structural view of a balloon dilation catheter of the present invention;

FIG. 2 is an enlarged view of a portion of A of a balloon dilation catheter of the present invention;

FIG. 3 is a right side view of FIG. 2 of a balloon dilation catheter of the present invention;

FIG. 4 is an enlarged view of a portion of B of a balloon dilation catheter of the present invention;

in the figure: 1-inner tube, 2-saccule, ladder-shaped outer tube-ladder-shaped outer tube, 4-sealing member two, 5-joint, 6-elastic ring, 7-rubber rod, 8-connecting rod, 9-moving ring, 10-elastic rope, 11-label, 21-and 32-thick tube.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

Referring to fig. 1-4, the present invention provides a technical solution:

example 1: a balloon dilatation catheter comprises an inner tube 1, a balloon 2, a step-shaped outer tube 3 and a joint 5, wherein the step-shaped outer tube 3 is arranged at the right end of the joint 5 and extends into the joint 5, the inner tube 1 is arranged inside the step-shaped outer tube 3, the left end of the inner tube 1 penetrates through the step-shaped outer tube 3 and extends into the joint 5, the balloon 2 is fixedly bonded at the right part of the annular outer end of the inner tube 1, the balloon 2 is fixedly connected at the right end of the step-shaped outer tube 3, a pulling device is arranged at the right part of the annular outer end of the step-shaped outer tube 3 and is arranged at the annular outer end of the balloon 2, two indicating marks 11 are fixed at the annular outer end of the inner tube 1, the two indicating marks 11 are arranged inside the balloon 2, when a person injects filling liquid into the balloon 2 along the step-shaped outer tube 3, when the inflation liquid in the sacculus 2 is pumped out, the rope pulling device carries out auxiliary contraction on the sacculus 2, and the phenomenon that the sacculus 2 contracts incompletely is avoided, so that the sacculus 2 after completely contracting has less harm to the blood vessel, and the use safety is improved.

Example 2: the stepped outer tube 3 comprises a thin tube 31 and a thick tube 32, the thick tube 32 is fixed at the left end of the thin tube 31, the right end of the thin tube 31 is fixedly connected with the balloon 2, the left end of the thick tube 32 extends into the joint 5, and the design of the thin tube 31 and the thick tube 32 is convenient for the connection and fixation of the stepped outer tube 3 and an auxiliary device.

Example 3: the pulling-up device comprises elastic rings 6, rubber rods 7, connecting rods 8, moving rings 9 and elastic ropes 10, wherein at least two elastic rings 6 are fixed at the annular outer end of the balloon 2 at equal intervals through viscose, at least two rubber rods 7 are uniformly fixed at the annular outer end of each elastic ring 6 through viscose, the inner wall of each rubber rod 7 is fixed with at least two elastic rings 6, the left ends of at least two rubber rods 7 are hinged with the connecting rods 8, at least two connecting rods 8 are hinged at the right end of each moving ring 9, the moving rings 9 are sleeved at the annular outer end of the thin tube 31, at least two elastic ropes 10 are fixed at the left ends of at least two moving rings 9 through viscose, at least two elastic ropes 10 are fixed at the left end of the thin tube 31 through viscose, at least two elastic ropes 10 are arranged at the annular outer side of the thin tube 31, when a person injects filling liquid into the balloon 2 through the stepped outer tube 3, the balloon 2 expands to push the elastic, meanwhile, the moving ring 9 is driven to move rightwards, and then the elastic rope 10 is stretched, so that the elastic rope 10 generates elasticity, the connecting rod 8 is hinged with the moving ring 9 and the rubber rods 7 respectively, so that the moving ring 9 moves rightwards to enable the rubber rods 7 in all directions to move outwards synchronously, the balloon 2 is enabled to be expanded uniformly, the situation that the balloon 2 deviates to a certain position in the expansion process and damages blood vessels and the like is avoided, when filling liquid in the balloon 2 is pumped out, the balloon 2 contracts, the elastic rings 6 assist the balloon 2 to contract, the rubber rods 7 move inwards under the elastic action of the elastic rope 10, the balloon 2 is further compressed to contract inwards, the contraction effect of the balloon 2 is improved, and the injury of the balloon 2 after complete contraction to the blood vessels is small.

Example 4: the connector 5 comprises a guide wire through pipe and a tilt liquid injection pipe, the upper end of the guide wire through pipe is fixed with the tilt liquid injection pipe, the guide wire through pipe is communicated with the inside of the inner pipe 1, the tilt liquid injection pipe is communicated with the inside of the stepped outer pipe 3, the guide wire penetrates through the guide wire through pipe, the injection pipe which is pumped with filling liquid is connected with the tilt liquid injection pipe, and the filling liquid is injected into the tilt liquid injection pipe, so that the filling liquid enters the balloon 2 along the stepped outer pipe 3.

Example 5: the sealing element II 4 is fixed on the left wall inside the joint 5, the sealing element II 4 is installed at the annular outer end of the inner pipe 1, and the sealing element II 4 is convenient for sealing the gap between the joint 5 and the inner pipe 1 and prevents filling liquid injected from the joint 5 from being discharged from the gap between the joint 5 and the inner pipe 1.

Example 6: the right part of the annular inner wall of the joint 5 is provided with a second sealing washer which is arranged at the annular outer end of the stepped outer tube 3, and a gap between the joint 5 and the stepped outer tube 3 is conveniently sealed by the second sealing washer, so that the leakage of filling liquid is avoided.

Example 7: the inner tube 1 is processed into a hollow structure, and the hollow inner tube 1 is sleeved on the guide wire and moves along the guide wire.

While there have been shown and described what are at present considered the fundamental principles of the invention and its essential features and advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description of the embodiments is for clarity only, and those skilled in the art should make the description as a whole, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a sacculus expansion pipe, includes inner tube (1), sacculus (2), echelonment outer tube (3) and connects (5), its characterized in that: the step-shaped outer tube (3) is arranged at the right end of the joint (5) and extends into the joint (5), an inner tube (1) is arranged in the step-shaped outer tube (3), the left end of the inner tube (1) penetrates through the step-shaped outer tube (3) and extends into the joint (5), a balloon (2) is arranged at the right part of the annular outer end of the inner tube (1), the balloon (2) is fixedly connected at the right end of the step-shaped outer tube (3), a pulling device is arranged at the right part of the annular outer end of the step-shaped outer tube (3), the pulling device is arranged at the annular outer end of the balloon (2), two indicating marks (11) are fixed at the annular outer end of the inner tube (1), and the two indicating marks (11) are arranged in;

the stepped outer tube (3) comprises a thin tube (31) and a thick tube (32), the thick tube (32) is fixed at the left end of the thin tube (31), the right end of the thin tube (31) is fixedly connected with the balloon (2), and the left end of the thick tube (32) extends into the joint (5);

the pulling-up device comprises an elastic ring (6), a rubber rod (7), a connecting rod (8), a moving ring (9) and an elastic rope (10), at least two elastic rings (6) are fixed at the annular outer end of the balloon (2) at equal intervals, at least two rubber rods (7) are uniformly fixed at the annular outer end of each elastic ring (6), the inner wall of the rubber rod (7) is fixed with at least two elastic rings (6), the left ends of at least two rubber rods (7) are respectively provided with a connecting rod (8), at least two connecting rods (8) are respectively arranged at the right end of a moving ring (9), the movable ring (9) is sleeved at the annular outer end of the thin tube (31), at least two elastic ropes (10) are fixed at the left ends of the movable ring (9), at least two elastic ropes (10) are fixed at the left end of the thin tube (31), and at least two elastic ropes (10) are arranged on the annular outer side of the thin tube (31);

the joint (5) comprises a guide wire through pipe and an inclined liquid injection pipe, the upper end of the guide wire through pipe is fixedly provided with the inclined liquid injection pipe, the guide wire through pipe is communicated with the inside of the inner pipe (1), and the inclined liquid injection pipe is communicated with the inside of the stepped outer pipe (3);

a second sealing element (4) is fixed on the left wall inside the joint (5), and the second sealing element (4) is installed at the annular outer end of the inner pipe (1);

a second sealing washer is arranged at the right part of the annular inner wall of the joint (5), and the second sealing washer is arranged at the annular outer end of the stepped outer pipe (3);

the inner part of the inner pipe (1) is processed into a hollow structure.