CN210963508U

CN210963508U - Balloon dilatation catheter with threaded ribs

Info

Publication number: CN210963508U
Application number: CN201921028122.6U
Authority: CN
Inventors: 胡浩; 刘炳荣; 刘松; 万红艳; 汪毅
Original assignee: Jiangxi Sanxin Medtec Co ltd
Current assignee: Jiangxi Sanxin Medtec Co ltd
Priority date: 2019-07-04
Filing date: 2019-07-04
Publication date: 2020-07-10
Anticipated expiration: 2029-07-04

Abstract

The utility model relates to a sacculus expansion pipe of threaded muscle is a soft pipe that the head end has inflatable sacculus for arteriovenous angiostenosis or endovascular stent expansion treatment use, belongs to medical instrument technical field. The device mainly comprises a three-way joint, a pushing tube, a balloon and a tip, and is shown in a schematic diagram. When the balloon dilatation catheter is used, the balloon dilatation catheter is pushed into a target lesion part through image guidance under the condition that the balloon is not expanded, and the balloon is expanded through the pressurizing device, so that a narrow blood vessel and the like in a human body are dilated. After the treatment is successful, the pressure retraction balloon is released, and the balloon dilatation catheter is withdrawn to the outside of the body. The same method can also be used to push the stent to the target lesion site, and the stent is left in the target lesion site after pressure expansion. Balloon dilatation catheters were originally used primarily in limb vessels and later expanded into internal arteries such as renal arteries, coronary arteries, and arteries.

Description

Balloon dilatation catheter with threaded ribs

Technical Field

The utility model relates to a medical appliance, in particular to a balloon dilatation catheter with a threaded rib.

Background

The balloon dilatation catheter, one of the main instruments for the intraluminal interventional therapy, is not only applied to the pre-dilatation and the shaping of blood vessels, but also applied to the delivery platform of stents and used for the precise shaping after the placement of the stents, and the importance of the balloon dilatation catheter in the interventional therapy is self-evident, and the balloon as the heart of the balloon dilatation catheter is always one of the focuses of design, development and optimization. One of the important indicators for evaluating the performance of a balloon dilation catheter is the ability to pass through a lesion. Therefore, the balloon structure with better passing performance is provided, and the balloon structure is suitable for severe intravascular stenosis or occluded lesion. Can be used for pre-expansion of complex lesions, especially vascular lesions with severe calcification or fibrosis, and lesions needing anti-skid treatment.

SUMMERY OF THE UTILITY MODEL

The utility model provides a through better sacculus structure of performance, convenient operation, safe and reliable. In order to achieve the technical purpose, the utility model discloses an adopt following technical scheme to realize: a balloon dilatation catheter with a threaded rib mainly comprises a three-way joint (1), a push pipe (2), a balloon (3) and a tip (4).

The method is characterized in that: the pushing tube (2) consists of an inner tube and an outer tube coaxial with the inner tube, and the near end of the inner tube is hermetically connected with the main joint of the three-way joint (1) to form a guide wire channel for the guide wire to pass through.

The two ends of the saccule (3) are respectively connected with the far ends of the inner tube and the outer tube in a sealing way, and meanwhile, the near end of the outer tube is connected with the side joint of the three-way joint (1) in a sealing way, so that a pressure cavity is formed, and the saccule (3) is pressurized, expanded, decompressed and retracted by matching with a pressurizing device.

The outer surface of the balloon (3) is provided with a plurality of small sections of protruding ribs, and the protruding ribs and the balloon are integrally formed by adopting the same material. When the saccule (3) is contracted and folded, the convex ribs are in a thread shape after being gathered; when the saccule (3) is inflated, the appearance is provided with a plurality of small-segment protruding ribs.

The tip (4) is hermetically connected with the far end of the inner tube and the balloon (3), and the soft tip (4) enables the balloon dilatation catheter to avoid damaging the vascular wall of a lesion proximal segment when passing through an extremely tortuous coronary vessel, thereby avoiding an interlayer and even perforation;

the method is characterized in that:

1. the outer surface of the balloon (3) is provided with a plurality of small sections of protruding ribs, and the protruding ribs and the balloon (3) are integrally formed by adopting the same material.

2. When the saccule (3) is contracted and folded, the convex ribs are gathered into a thread shape; when the saccule (3) is inflated, a plurality of small-segment convex ribs are shown on the outer surface.

3. The convex rib can be a bulge with the same wall thickness as the balloon (3), and the center of the convex rib is concave; or may be solid. The ribs may be in a trapezoidal or triangular pattern in cross-section,

the utility model discloses following beneficial effect has:

the utility model discloses a sacculus when shrink fold condition, the outside abrupt muscle of sacculus is gathered together and is the screw thread form, rotates the propelling movement pipe and enables it to demonstrate the distinctive transmission characteristic of screw thread, compares with ordinary sacculus expansion pipe, has better trafficability characteristic. The outward appearance has many small segments to protrude the muscle during sacculus inflation state, has diversified cutting effect, and can not excessively cut the vascular intima, compares traditional blade formula cutting sacculus pipe effect better.

Drawings

FIG. 1 is a schematic structural view of the utility model;

FIG. 2 is a schematic view of the balloon when collapsed;

FIG. 3 is an enlarged view of a portion of the balloon when collapsed;

FIG. 4 is a sectional view of a solid bead type balloon A-A when the balloon is contracted and folded;

FIG. 5 is a sectional view of an A-A constant wall thickness concave rib-protruding balloon when the balloon is contracted and folded;

FIG. 6 is a schematic view of the balloon when inflated;

FIG. 7 is an enlarged partial view of the balloon as it is inflated;

FIG. 8 is a sectional view of a solid beaded balloon A-A during inflation and dilation;

FIG. 9 is a sectional view of the balloon A-A with equal wall thickness and concave convex ribs when the balloon is inflated and expanded.

In the drawings: three way connection (1), propelling movement pipe (2), sacculus (3), pointed end (4).

Detailed Description

Referring to the attached drawings, the balloon dilatation catheter with the threaded ribs mainly comprises a three-way joint (1), a push pipe (2), a balloon (3) and a tip (4). Can be used for treating arteriovenous angiostenosis or endovascular stent expansion.

When propelling movement sacculus expansion pipe got into target pathological change position, sacculus (3) were in shrink fold condition, and sacculus (3) outside abrupt muscle was gathered together and is the screw thread form this moment, and is narrow or be blocked when pathological change position for adopt normal propelling movement mode sacculus expansion pipe to be difficult to get into target pathological change position, can rotate propelling movement pipe (2) this moment, and sacculus expansion pipe shows the distinctive transmission characteristic of screw thread this moment, makes sacculus expansion pipe easily get into target pathological change position.

After the balloon dilatation catheter enters a target lesion part, the balloon (3) is inflated through the pressurizing device, at the moment, the balloon (3) is inflated, a plurality of small-section protruding ribs are shown on the appearance, the balloon dilatation catheter has the characteristics similar to a cutting balloon catheter, plaques in blood vessels can be squeezed and cut, annular pressure is relieved, and the target lesion can be maximally dilated with minimum force and time. Compared with the traditional blade type cutting balloon catheter, the multi-directional cutting clinical effect is better; the friction force between the balloon and the wall of the blood vessel is large, so that the balloon cannot be displaced; the endangium of the blood vessel can not be cut excessively; the profile is smaller, the retraction effect is good, and the like.

When used as a conveying platform of a stent, the balloon dilatation catheter has excellent anti-skid performance no matter the thread-shaped ribs are arranged in a contracted and folded state or a plurality of small-section ribs are arranged on the surface in an expanded state.

Claims

1. The utility model provides a sacculus expansion pipe of threaded muscle, includes three way connection (1), propelling movement pipe (2), sacculus (3), pointed end (4), its characterized in that: the pushing pipe (2) consists of an inner pipe and an outer pipe which is coaxial with the inner pipe, and the near end of the inner pipe is hermetically connected with the main joint of the three-way joint (1) to form a guide wire channel for the guide wire to pass through;

the two ends of the saccule (3) are respectively connected with the far ends of the inner tube and the outer tube in a sealing way, and the near end of the outer tube is connected with the side joint of the three-way joint (1) in a sealing way, so that a pressure cavity is formed, and the saccule (3) is pressurized, expanded, decompressed and retracted by matching with a pressurizing device;

the outer surface of the balloon (3) is provided with a plurality of small sections of protruding ribs, and the protruding ribs and the balloon are integrally formed by adopting the same material;

when the saccule (3) is contracted and folded, the convex ribs are in a thread shape after being gathered; when the saccule (3) is expanded, a plurality of small sections of protruding ribs are shown on the outer surface;

the tip (4) is connected with the far end of the inner tube and the saccule (3) in a sealing way, and the soft tip (4) enables the saccule dilatation catheter to avoid damaging the blood vessel wall of the proximal segment of pathological changes when passing through the extremely tortuous coronary vessels, thereby causing the interlayer and even perforation.

2. The threaded-rib balloon dilation catheter of claim 1, wherein: the outer surface of the balloon (3) is provided with a plurality of small sections of protruding ribs, and the protruding ribs and the balloon are integrally formed by adopting the same material.

3. The threaded-rib balloon dilation catheter of claim 1, wherein: when the saccule (3) is contracted and folded, the convex ribs are in a thread shape after being gathered, and when the saccule (3) is expanded, a plurality of small sections of convex ribs are shown on the outer surface.

4. The threaded-rib balloon dilation catheter of claim 1, wherein: the convex rib can be a bulge with the same wall thickness as the balloon (3), and the center of the convex rib is concave; or solid, the ribs may be trapezoidal or triangular in cross-section.