CN211096928U

CN211096928U - Balloon guiding catheter

Info

Publication number: CN211096928U
Application number: CN201921134995.5U
Authority: CN
Inventors: 余永毅; 殷瑞强
Original assignee: Yongyi Alan Yu
Current assignee: Yongyi Alan Yu
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2020-07-28
Anticipated expiration: 2029-07-19

Abstract

The utility model provides a balloon guide catheter, which comprises an outer tube and an inner tube; the inner tube is arranged in the outer tube, and the lumen of the inner tube is a guide cavity of the balloon guide catheter; the distal end of the outer tube is connected with an expandable and contractible balloon; the main improvement is that the method also comprises the following steps: a capillary tube; a capillary tube is arranged between the walls of the inner tube and the outer tube to form a composite tube; the lumen of the capillary tube is communicated with the inside of the balloon. The capillary tubes are uniformly distributed between the inner tube wall and the outer tube wall. The proximal end of the balloon guide catheter is provided with a Y-shaped luer connector, a main tube of the Y-shaped luer connector is communicated with the inner cavity of the inner tube to form an inner cavity channel of the balloon guide catheter, and a side hole of the Y-shaped luer connector is communicated with the lumen of the capillary tube to form a balloon injection channel of the balloon guide catheter. Preferably, the capillary tube is arranged in an arc-shaped groove in the axial direction of the outer wall of the inner tube. The utility model discloses can increase the anti ability of caving in of outer tube under the prerequisite that does not increase sacculus guide pipe shaft tubular product thickness, does not lose pipe compliance ability.

Description

Balloon guiding catheter

Technical Field

The utility model relates to a minimally invasive interventional therapy catheter, in particular to a balloon guiding catheter.

Background

At present, stroke is one of common diseases in the world, and has the characteristics of high morbidity, high morbidity and high disability rate. The urban cerebrovascular disease rate in China is 219/10 ten thousand, and the rural cerebrovascular disease rate is 185/10 ten thousand. The acute-phase treatment method for cerebral infarction by intravenous injection of rt-PA thrombolytic has the advantages of long treatment time, large damage to ischemic brain tissue, bleeding risk, low recanalization rate, short time window of intravenous injection thrombolysis, and insufficient satisfaction of actual clinical requirements by single intravenous thrombolysis.

The treatment method of delivering mechanical thrombus taking of interventional thrombus taking instruments through the balloon guide catheter or finishing thrombus suction through the balloon guide catheter has the advantages of less bleeding, small wound, less complication, safety, reliability and quick postoperative recovery. Can effectively make up the deficiency of intravenous injection thrombolytic and meet the actual clinical requirement.

In the interventional therapy thrombus removal process, the blood flow is temporarily blocked by balloon expansion and vessel wall attachment, and after thrombus removal is completed, the balloon is contracted to restore the blood flow.

The key problem of the treatment method is to ensure that the balloon contraction time is short enough to recover blood flow as soon as possible after the embolectomy is finished, and reduce the surgical complications.

At present, the tube body of the existing balloon guide catheter at home and abroad adopts a double-layer structure, and liquid (such as developing solution) for expanding the balloon is injected into the balloon from the inner layer and the outer layer of the tube body; the outer layer is usually a single-layer polymer pipe or a woven mesh polymer pipe; the outer layer pipe adopts a single-layer polymer which can collapse in the process of balloon contraction or suction, so that a liquid passage is blocked or contracted, and the balloon contraction time is prolonged; the outer polymer tubular product of adopting the mesh grid to strengthen can effectively prevent that outer tubular product from collapsing after the ability, but can increase tubular product thickness, the loss pipe compliance leads to the fact the damage to the blood vessel at the in-process that sacculus guide pipe intervenes the blood vessel.

Disclosure of Invention

To the not enough that exists among the prior art, the utility model provides a guiding catheter is led to sacculus can increase the ability that the outer tube anti sinks under the prerequisite that does not increase sacculus guiding catheter shaft tubular product thickness, does not lose pipe compliance ability, guarantees that sacculus shrink or suction in-process liquid route are smooth and easy, reduces the damage that sacculus shrink time overlength caused. The utility model adopts the technical proposal that:

a balloon guide catheter comprises an outer tube and an inner tube; the inner tube is arranged in the outer tube, and the lumen of the inner tube is a guide cavity of the balloon guide catheter; the distal end of the outer tube is connected with an expandable and contractible balloon; the main improvement is that the method also comprises the following steps: a capillary tube;

a capillary tube is arranged between the walls of the inner tube and the outer tube to form a composite tube; the lumen of the capillary tube is communicated with the inside of the balloon.

Furthermore, the capillary is evenly distributed between the inner pipe and the outer pipe wall.

Further, the capillary tube is arranged in an arc-shaped groove in the axial direction of the outer wall of the inner tube.

Further, the number of capillaries is at most one layer arranged closely between the inner and outer tube walls.

Furthermore, a Y-shaped luer connector is arranged at the end part of the near end of the balloon guide catheter, a main tube of the Y-shaped luer connector is communicated with the inner cavity of the inner tube to form an inner cavity channel of the balloon guide catheter, and a side hole of the Y-shaped luer connector is communicated with the lumen of the capillary tube to form a balloon injection channel of the balloon guide catheter.

The utility model has the advantages that:

1) compared with the balloon guide catheter with the outer tube being a single-layer polymer tube, the balloon guide catheter can effectively prevent the outer tube from collapsing and reduce the risk caused by too long contraction time of the balloon guide catheter.

2) Compare with the sacculus guide catheter of outer mesh grid for strengthening tubular product, reduce the wall thickness of tube, increase pipe shaft inner chamber space, increase the compliance, reduce the damage to the vascular wall.

Drawings

Fig. 1 is an overall schematic view of the present invention.

Fig. 2 is a schematic cross-sectional view of the present invention.

Fig. 3 is a partial enlarged view of the balloon.

Detailed Description

The invention is further described with reference to the following specific drawings and examples.

The utility model provides a balloon guide catheter, which comprises an outer tube 1, a capillary tube 5 and an inner tube 4;

the inner tube 4 is arranged in the outer tube 1, and the lumen of the inner tube is a guide lumen of the balloon guide catheter; the distal end of the outer tube 1 is connected with an expandable and contractible balloon 2;

a capillary 5 is arranged between the inner pipe 4 and the outer pipe 1 to form a composite pipe; the number of the capillaries 5 can be different according to the specification of the balloon guide catheter and the size of the balloon; the capillary tubes 5 are uniformly distributed between the inner tube 4 and the tube wall of the outer tube 1;

the number of the capillaries 5 is at most one layer which is tightly arranged between the inner tube 4 and the tube wall of the outer tube 1;

the capillary tube 5 is arranged in an arc-shaped groove in the axial direction of the outer wall of the inner tube; before the inner pipe and the outer pipe are assembled, the outer wall of the inner pipe 4 is cut by machinery or laser along the axial direction to form an arc-shaped groove, and a capillary 5 is arranged in the arc-shaped groove; so that the capillary 5 is not easily displaced;

the lumen of the capillary 5 is communicated with the inside of the balloon 2;

a Y-shaped luer connector 3 is arranged at the proximal end part of the balloon guide catheter, the main pipe of the Y-shaped luer connector 3 is communicated with the inner cavity of the inner pipe 4 to form a balloon guide catheter inner cavity channel, and the side hole of the Y-shaped luer connector 3 is communicated with the capillary tube cavity to form a balloon injection channel of the balloon guide catheter;

when the saccule is expanded and attached to the vessel wall, liquid is injected into the saccule through the side hole of the Y-shaped Ruhr connector 3 and the capillary tube; when the saccule is contracted, liquid is pumped out through the capillary tube and the side hole of the Y-shaped luer connector 3;

the utility model discloses in, owing to increased the capillary of equipartition between the inner and outer tube, under the prerequisite that does not increase sacculus guide catheter shaft tubular product thickness, does not lose pipe compliance ability, can increase the anti ability of caving in of outer tube.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. A balloon guide tube, which comprises an outer tube (1) and an inner tube (4); the inner tube (4) is arranged in the outer tube (1), and the lumen of the inner tube is a guide lumen of the balloon guide catheter; the far end of the outer tube (1) is connected with an expandable and contractible balloon (2); it is characterized by also comprising: a capillary (5);

a capillary tube (5) is arranged between the inner tube (4) and the outer tube (1) to form a composite tube; the lumen of the capillary (5) is communicated with the inside of the saccule (2).

2. The balloon guide catheter of claim 1,

the capillary tubes (5) are uniformly distributed between the inner tube (4) and the tube wall of the outer tube (1).

3. The balloon guide catheter of claim 1,

the capillary tube (5) is arranged in an arc-shaped groove in the axial direction of the outer wall of the inner tube.

4. The balloon guide catheter of claim 1,

the number of the capillaries (5) is at most one layer which is tightly arranged between the inner tube (4) and the outer tube (1).

5. The balloon guide catheter of claim 1,

the proximal end part of the balloon guide catheter is provided with a Y-shaped luer connector (3), the main pipe of the Y-shaped luer connector (3) is communicated with the inner cavity of the inner pipe (4) to form a balloon guide catheter inner cavity channel, and the side hole of the Y-shaped luer connector (3) is communicated with the capillary tube cavity to form a balloon injection channel of the balloon guide catheter.