CN211935132U

CN211935132U - Large-inner-cavity balloon guide catheter

Info

Publication number: CN211935132U
Application number: CN201922320387.XU
Authority: CN
Inventors: 余永毅; 范叔奇
Original assignee: Yongyi Alan Yu
Current assignee: Yongyi Alan Yu
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-11-17
Anticipated expiration: 2029-12-20

Abstract

The utility model provides a big inner chamber type sacculus guide pipe, include: the device comprises an outer tube, an expansion cavity, an inner tube, an inner cavity, a Y valve and a balloon; the inner pipe is positioned in the outer pipe, and an expansion cavity is formed between the inner pipe and the outer pipe; the inner tube is provided with an inner cavity; the distal end of the outer tube is connected with an expandable and contractible balloon; a Y valve is arranged at the near end of the large-cavity balloon guide catheter; the main hole of the Y valve is communicated with the inner cavity of the inner tube to form a balloon guide catheter inner cavity channel, and the side hole of the Y valve is communicated with the expansion cavity to form a balloon expansion liquid infusion channel of the balloon guide catheter; the outer tube comprises an outer tube polymer outer layer and a spiral coil of the outer tube after the spring is wound; the inner tube comprises an inner tube polymer outer layer, a coiled inner tube spiral coil and an inner tube lining. Further, the outer tube is formed by heat shrinking the outer tube polymer layer together with the outer tube helical coil. The inner pipe is formed by thermal shrinkage and flow change of an inner pipe polymer outer layer, an inner pipe spiral coil and an inner pipe lining. The utility model discloses can be with the external diameter on the market for 6F distal end route pipe and thrombus suction catheter adaptation.

Description

Large-inner-cavity balloon guide catheter

Technical Field

The utility model relates to a medical appliance for intracranial nerve intervention, in particular to a large-cavity balloon guide catheter.

Background

The interventional technique of cerebrovascular diseases is a representative minimally invasive treatment mode, and with the progress of imaging equipment and the rapid development of novel interventional equipment in recent years, cranial nerve interventional doctors can treat more and more complex pathological changes, more and more cases are applied clinically, and the related disease types are more and more extensive.

Intracranial assisted embolectomy procedures using either 5F-6F outer diameter distal access catheters commonly used in the intravascular delivery market via balloon-guided catheters (e.g., Navien, Meindon, CAT-6, Schek, Revive IC, Sofia, Microvention) or intracranial thrombectomy catheters (e.g., Penumbra ACE 68) have become the central recommendation of the international stroke conference.

The Merci balloon guide catheter produced by American Hisex company is the existing like product in the foreign market at present, the outer diameter of the Merci balloon guide catheter is 8F, but the inner cavity size is only 0.075 inch, the Merci balloon guide catheter can only pass through a 5F far-end access catheter or a thrombus suction catheter, the adaptation of a 6F catheter cannot be realized, and the clinical application of the Merci balloon guide catheter matched with a near-end plugging balloon catheter by the 6F far-end access catheter and the thrombus suction catheter in the market is limited to a great extent.

Disclosure of Invention

To the not enough of existence among the prior art, the utility model provides a big inner chamber type sacculus guide pipe can realize the big inner chamber of inner tube, can with market go up the external diameter for 6F distal end route pipe and thrombus suction catheter adaptation. The utility model adopts the technical proposal that:

a large lumen balloon guide catheter comprising: the device comprises an outer tube, an expansion cavity, an inner tube, an inner cavity, a Y valve and a balloon;

the inner pipe is positioned in the outer pipe, and an expansion cavity is formed between the inner pipe and the outer pipe; the inner tube is provided with an inner cavity; the distal end of the outer tube is connected with an expandable and contractible balloon; a Y valve is arranged at the near end of the large-cavity balloon guide catheter; the main hole of the Y valve is communicated with the inner cavity of the inner tube to form a balloon guide catheter inner cavity channel, and the side hole of the Y valve is communicated with the expansion cavity to form a balloon expansion liquid infusion channel of the balloon guide catheter;

the outer tube comprises an outer tube polymer outer layer and a spiral coil of the outer tube after the spring is wound;

the inner tube comprises an inner tube polymer outer layer, a coiled inner tube spiral coil and an inner tube lining.

Further, the outer tube is formed by heat shrinking the outer tube polymer layer together with the outer tube helical coil.

Further, the inner pipe is formed by heat-shrinking and flowing the outer layer of the inner pipe polymer, the spiral coil of the inner pipe and the inner lining of the inner pipe together.

Further, the outer polymer layer of the outer tube adopts polyurethane TPU or polyether block amide elastomer Pebax.

Further, the outer polymer layer of the inner pipe adopts polyurethane TPU or polyether block amide elastomer Pebax.

The utility model has the advantages that: the utility model discloses under the external diameter and the wall thickness condition that do not increase 8F sacculus guide pipe, design a big inner chamber type sacculus guide pipe for its inner chamber can be through 6F distal end route pipe or thrombus suction catheter commonly used in the market, does not lose the compliance performance and the bending resistance performance of pipe simultaneously, the intracranial tortuous anatomical structure of the route of being convenient for.

Drawings

Fig. 1 is a schematic view of the structure of the present invention.

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

Fig. 3 is a schematic cross-sectional view taken along a-a of the present invention.

Detailed Description

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

An embodiment of the utility model provides a big inner chamber type sacculus guide pipe, include: the device comprises an outer tube 1, an expansion cavity 2, an inner tube 3, an inner cavity 4, a Y valve 5 and a balloon 6;

the inner pipe 3 is positioned in the outer pipe 1, and an expansion cavity 2 is formed between the inner pipe 3 and the outer pipe 1; the inner tube 3 has an inner cavity 4 therein; the distal end of the outer tube 1 is connected with an expandable and contractible balloon 6; a Y valve 5 is arranged at the near end of the large-cavity balloon guide catheter; the main hole of the Y valve 5 is communicated with the inner cavity 4 of the inner tube 3 to form a balloon guide catheter inner cavity channel, and the side hole of the Y valve 5 is communicated with the expansion cavity 2 to form a balloon expansion liquid infusion channel of the balloon guide catheter;

as shown in fig. 2 and 3, the outer tube 1 comprises an outer tube polymer layer 101 and a coiled outer tube helical coil 102; the outer pipe polymer layer 101 and the outer pipe spiral coil 102 are subjected to heat shrinkage and flow deformation together to form an outer pipe 1; the outer tube helical coil 102 may be a stainless steel coil;

the inner tube 3 comprises an inner tube polymer outer layer 301, a coiled inner tube helical coil 302 and an inner tube liner 303; the inner pipe polymer outer layer 301, the inner pipe spiral coil 302 and the inner pipe lining 303 are subjected to heat shrinkage and flow deformation together to form an inner pipe 3; the inner tube helical coil 302 may be a stainless steel coil;

the lumen of the inner tube 3 is a guide lumen of a balloon guide catheter, the inner diameter can reach 0.085 inch and is about 6.5F, and the distal passage catheter and the thrombus suction catheter with the outer diameter of 6F can be produced by mainstream manufacturers on the market;

the design has the advantages that the outer tube of the large-inner-cavity balloon guide catheter with the thin wall is formed by combining the outer polymer layer of the outer tube with the thin wall and the stainless steel coil with the thin wall, so that the outer diameter of a formed product can be ensured to be 8F, the inner cavity can be greatly increased, the inner and outer diameter sizes of 8F and 0.075 inch originally in the market are matched, the inner and outer diameter sizes of 8F and 0.085 inch are matched, and the 6F far-end passage catheter and the thrombus suction catheter of mainstream manufacturers in the market can be ensured to pass;

the flexibility and the folding resistance of the far end of the large-lumen balloon guiding catheter can be controlled by the selection of the winding spring type of the outer tube spiral coil 102 and the inner tube spiral coil 302 and the selection of the polymers of the outer tube polymer outer layer 101 and the inner tube polymer outer layer 301, and the intracranial complex and tortuous anatomical structures can be conveniently passed.

In some embodiments, the outer tube polymer outer layer 101 may employ a polyurethane TPU, or a polyether block amide elastomer Pebax.

In some embodiments, the inner tube polymeric outer layer 301 may employ a polyurethane TPU, or a polyether block amide elastomer Pebax.

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 large lumen balloon guide catheter, comprising: the device comprises an outer tube (1), an expansion cavity (2), an inner tube (3), an inner cavity (4), a Y valve (5) and a balloon (6);

the inner pipe (3) is positioned in the outer pipe (1), and an expansion cavity (2) is formed between the inner pipe (3) and the outer pipe (1); the inner tube (3) is provided with an inner cavity (4); the far end of the outer tube (1) is connected with an expandable and contractible balloon (6); a Y valve (5) is arranged at the near end of the large-cavity balloon guide catheter; the main hole of the Y valve (5) is communicated with the inner cavity (4) of the inner tube (3) to form a balloon guide catheter inner cavity channel, and the side hole of the Y valve (5) is communicated with the expansion cavity (2) to form a balloon expansion liquid infusion channel of the balloon guide catheter;

the outer tube (1) comprises an outer tube polymer outer layer (101) and a coiled outer tube helical coil (102);

the inner tube (3) comprises an inner tube polymer outer layer (301), a coiled inner tube helical coil (302) and an inner tube lining (303).

2. The large-lumen balloon guide catheter according to claim 1,

the outer tube polymer outer layer (101) adopts polyurethane TPU or polyether block amide elastomer Pebax.

3. The large-lumen balloon guide catheter according to claim 1,

the inner tube polymer outer layer (301) is made of polyurethane TPU or polyether block amide elastomer Pebax.