CN107050625B - Anti-deep insertion reinforced support guide catheter - Google Patents

Abstract

The utility model provides a prevent dark enhancement support formula guide catheter that inserts, includes guide catheter body (1) tip portion is provided with collapsible and abundant support sacculus (2), and this support sacculus (2) are connected with liquid filling pipeline (3), and this liquid filling pipeline (3) are located guide catheter body (1) inner wall, or outer wall, or in guide catheter body (1) the pipe wall. The invention effectively improves the active and passive supporting force of the existing guide catheter, can better complete the intervention operation of the complex coronary heart disease, greatly reduces the operation risk, and reduces the medical cost and the operation time which are increased because the guide catheter is not suitable for replacing various guide catheters and guide wires with different shapes.

Description

Anti-deep insertion reinforced support guide catheter

technical field

The invention relates to the field of medical devices, in particular to an anti-deep insertion enhanced support guide catheter applied to coronary interventional surgery.

Background technique

The incidence of coronary heart disease is getting higher and higher, and there are more and more complex coronary lesions. This type of coronary intervention is difficult. To complete complex lesions, especially twisted vascular lesions and chronic occlusive lesions, a strong supporting guiding catheter is required. . A good guiding guide tube must have good active support and passive support capabilities. The so-called active support capacity refers to the ability of the catheter to transport forward to the coronary blood vessels. Often, it is not possible to rely too much on it because of the fear of deep insertion of the catheter into the coronary artery. The so-called passive support capacity is proportional to the diameter of the guiding catheter, the contact area between the catheter and the aorta, the friction between the catheter and the aortic wall, and the angle between the catheter and the aorta. At present, all guide catheters on the market rely on changing the shape of the catheter tip to increase support, and each patient's aortic root structure, coronary artery opening, size, etc. The tip is displaced backwards or even detached from the opening of the blood vessel. In order to increase support, it is sometimes inserted deep into the coronary artery, causing vascular injury and tearing of the blood vessel, resulting in acute adverse events and even death.

Contents of the invention

Aiming at the deficiencies of the prior art, the present invention proposes a safe and reliable anti-deep insertion enhanced support type guiding catheter with simple structure, convenient operation, effectively enhancing the supporting force of the guiding catheter, avoiding deep insertion of the guiding catheter to damage blood vessels, and specifically The technical scheme is as follows:

An anti-deep insertion enhanced support guide catheter, comprising a guide catheter body (1), the tip of the guide catheter body (1) is provided with a shrinkable and inflatable support balloon (2), the support The balloon (2) is connected with a fluid-filled pipeline (3), and the fluid-filled pipeline (3) is located on the inner wall or the outer wall of the guide catheter body (1), or on the inner wall of the guide catheter body (1). in the pipe wall.

The method of use of the present invention is as follows: under the guidance of a conventional radiography guide wire, the tube body of the guiding catheter is sent to the aortic root. In an ideal position, physiological saline or contrast agent enters the support balloon (2) through the fluid-filled pipeline (3) to inflate it, and the support balloon (2) acts as a support point for the guiding catheter body, which can effectively prevent deep insertion , and can prevent the catheter from being inserted deeply while increasing the contact area between the catheter and the aorta, increasing the angle between the aorta and the guiding catheter, thereby enhancing the support to complete complex coronary interventional procedures. (2) Suction to the limit with negative pressure, slowly withdraw from the body, and complete the interventional operation.

For realizing the present invention better, can further be:

The support balloon (2) is located on the side wall of the guide catheter body (1), and the support balloon (2) adopts a right-angle transition to the side wall of the guide catheter body (1) after being inflated , so that the supporting balloon (2) will not slide into the blood vessel following the guiding catheter, avoiding blood vessel tearing, and the top of the supporting balloon (2) adopts a circular arc transition to ensure smooth penetration of the guiding catheter sex.

The height D of the support balloon (2) after filling is 6-9 mm, and the length C is 10 mm. The diameter of the support balloon (2) after inflation should be half the diameter of the guide catheter. The larger the diameter of the balloon, the stronger the support, but it will block the blood flow in the vessel cavity; the height of the balloon + catheter diameter after inflation should be greater than the diameter of the coronary vessel Double, the current diameter of the coronary artery opening is between 4-6mm, and the diameter of the guiding catheter is between 0.33mm*5-8, so the balloon height after filling is 6-9mm, and the length of the balloon after filling is 10mm. The longer the length, the stronger the support.

A through hole is opened on the support balloon (2) along the axial direction of the guide catheter tube body (1). The setting of the through hole reduces the blocking of blood by the support balloon (2).

A mesh (4) is opened on the side wall of the tip of the guiding catheter tube body (1), which can increase the blood flow forward in the coronary artery.

The supporting balloon (2) is circular, and the outer wall of the inner ring of the supporting balloon (2) is connected with the outer wall of the guide catheter body (1). The force is more uniform, and at the same time, the pressure on the coronary chamber of the heart can be reduced, which is safer and more reliable.

The guiding catheter body (1) is composed of an inner tube (11) and an outer tube (12), and the cavity formed by the outer wall of the inner tube (11) and the inner wall of the outer tube (12) is the liquid-filled The pipe (3), or the liquid-filled pipe (3) is located in a cavity formed by the outer wall of the inner pipe (11) and the inner wall of the outer pipe (12). The structure is simple, especially the two-layer structure of the inner tube (11) and the outer tube (12), the production process is simple, and the integral performance is superior.

The liquid-filled pipeline (3) is pasted on the inner wall or the outer wall of the guiding catheter body (1).

The distance A between the support balloon (2) and the tip of the guiding catheter body (1) is 0.5-1 cm. If the distance is too short, it will make it difficult to insert the guiding catheter, and if it is too long, the purpose of preventing too deep insertion will be lost.

The filling fluid of the supporting balloon (2) is physiological saline or contrast agent, which is convenient for observing the supporting balloon (2) under X-ray fluoroscopy.

The beneficial effects of the present invention are: the active and passive support force of the existing guiding catheter is effectively improved, the insertion can be prevented from being too deep, the complex interventional surgery for coronary heart disease can be better completed, the operation risk is greatly reduced, and the risk of the guiding catheter is reduced. It is not suitable to replace catheters and guide wires of various shapes, thereby increasing medical expenses and operation time.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic diagram of the use state of the present invention;

FIG. 3 is a schematic structural diagram of Embodiment 2 of the present invention;

Fig. 4 is a schematic structural diagram of Embodiment 3 of the present invention.

Detailed ways

The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

Embodiment 1: As shown in Fig. 1 and Fig. 2, an anti-deep insertion enhanced support type guiding catheter includes a guiding catheter body 1, the guiding catheter body 1 is composed of an inner tube 11 and an outer tube 12. A shrinkable and inflatable support balloon 2 made of polyethylene terephthalate is provided on the side wall of the tip outer tube 12 of the guide catheter body 1, and the support balloon 2 is connected with the guide catheter tube. The distance A between the tip of the body 1 is 0.5-1 cm, the support balloon 2 is connected with a liquid-filled pipeline 3, and the support balloon 2 is filled with liquid or negative pressure through the liquid-filled pipeline 3, wherein the liquid-filled pipeline 3 is located between the inner tube 11 and the In the cavity formed by the outer tube 12, or directly use the formed cavity as the liquid-filled pipeline 3;

After the support balloon 2 is inflated with normal saline or contrast agent, it adopts a right-angle transition to the side wall of the guide catheter tube body 1, so that the support balloon 2 will not slide into the blood vessel following the guide catheter and avoid tearing of the blood vessel. The top of the supporting balloon 2 adopts a circular arc transition to ensure the smoothness of the guiding catheter during penetration, and the specific dimensions are that the height D is 7mm and the length C is 10mm;

A through hole is opened on the support balloon 2 along the axial direction of the guide catheter tube body 1, and a mesh 4 is opened on the side wall of the tip of the guide catheter tube body 1 to facilitate the circulation of blood.

Embodiment 2: In the case that other structures are the same as Embodiment 1, as a modification, as shown in FIG. On the outer wall, the outer wall of the inner ring supporting the balloon 2 is connected with the outer wall of the guiding catheter body 1 .

Embodiment 3, in the case that other structures are the same as Embodiment 1, as a deformation, as shown in Figure 4, wherein the liquid-filled pipe 3 is pasted on the inner wall or the outer wall of the guiding catheter tube body 1, in order to improve the guiding catheter body 1. The smoothness of the tube body 1 can be provided with a groove on the outer wall or inner wall of the guide catheter body 1 that is compatible with the structure of the liquid-filled pipeline 3, and the groove is matched with the liquid-filled pipeline 3 to ensure that the guide catheter body 1 Passability in blood vessels.

Claims (6)

1. An anti-deep insertion enhanced support type guide catheter, including a guide catheter body (1), characterized in that a retractable and inflatable support ball is provided at the tip of the guide catheter body (1) A balloon (2), the support balloon (2) is connected with a fluid-filled pipeline (3), and the fluid-filled pipeline (3) is located on the inner wall, or outer wall, of the guide catheter body (1), or the guide In the pipe wall of the catheter body (1); The support balloon (2) is located on the side wall of the guide catheter body (1), and the support balloon (2) adopts a right-angle transition to the side wall of the guide catheter body (1) after being inflated , the top of the supporting balloon (2) adopts a circular arc transition; The inflated height D of the support balloon (2) is 6-9 mm, and the length C is 10 mm; A through hole is opened on the support balloon (2) along the axial direction of the guide catheter body (1); Mesh holes (4) are opened on the side wall of the tip portion of the guiding catheter tube body (1). 2. The anti-deep insertion enhanced support type guide catheter according to claim 1, characterized in that: the support balloon (2) is circular, and the inner and outer walls of the support balloon (2) are in contact with the guide catheter. The outer wall of the guide tube body (1) is connected. 3. The anti-deep insertion enhanced support type guide catheter according to claim 1 or 2, characterized in that: the guide catheter tube body (1) is composed of an inner tube (11) and an outer tube (12), the The cavity formed by the outer wall of the inner tube (11) and the inner wall of the outer tube (12) is the liquid-filled pipeline (3), or the liquid-filled pipeline (3) is located between the outer wall and the outer wall of the inner tube (11). In the cavity formed by the inner wall of the tube (12). 4. The anti-deep insertion enhanced support type guiding catheter according to claim 1, characterized in that: the liquid-filled pipe (3) is pasted on the inner wall or the outer wall of the guiding catheter body (1). 5. The anti-deep insertion enhanced support type guide catheter according to claim 1, characterized in that: the distance A between the support balloon (2) and the tip of the guide catheter body (1) is 0.5-1 cm. 6. The anti-deep insertion enhanced support type guide catheter according to claim 1, characterized in that: the filling fluid of the support balloon (2) is physiological saline or contrast medium.

Images