CN114515377A - Balloon catheter capable of selectively expanding diameter - Google Patents

Abstract

The invention relates to a balloon catheter with a selectively expandable diameter, comprising a central balloon, two ends of which are sealed with the outer wall of a core tube, and the central balloon communicates with the inner cavity of the core tube; a plurality of edge balloons surround the circumference of the central balloon The front-end soft head is connected to the front end of the core tube and each edge balloon respectively; the multi-lumen tube has a middle lumen and a plurality of edge lumen in the multi-lumen tube, and the front end of the middle lumen is connected to the back of the core tube. The rear end of the middle lumen is connected with the middle luer joint, so that the middle luer joint is connected with the core tube through the middle lumen; the front end of each edge lumen is connected with each edge balloon respectively, and the rear end of each edge lumen Connect the edge luer fittings respectively, so that the edge luer connector communicates with the edge balloon through the edge lumen. The diameter of the balloon can be selectively expanded, the overall expansion diameter range is large, and the safety in actual use is higher.

Description

Diameter-selective balloon catheter

technical field

The invention relates to the medical field, in particular to a balloon catheter with a selectively expandable diameter.

Background technique

With the development of society and the increasing improvement of people's lives, the stenosis of the digestive tract, respiratory tract, and large blood vessels is common in patients caused by various reasons, and medical drug treatment is mostly ineffective. However, balloon dilation surgery has become the mainstream method for the treatment of stenosis due to its small trauma, low risk, less pain and quick recovery.

As shown in FIG. 1 , the existing balloon catheter includes a balloon 10 , a soft tip 11 , an outer tube 12 , a core tube 13 and a handle 14 (a tee). , the outer wall of the core tube 13 is sealingly connected with the front end of the balloon 10, the rear end of the balloon 10 is connected with the outer tube 12, the rear end of the core tube 13 and the rear end of the outer tube 12 are connected to the handle 14, and the handle 14 is opened with a liquid injection hole and a guide wire hole , the liquid injection hole communicates with the balloon 10 through the inner cavity of the outer tube 12 , and the guide wire hole communicates with the inner cavity of the core tube 13 .

The balloon catheter of this structure has only one balloon, which can only be expanded singlely, and the diameter of the balloon to be expanded is small; due to the different lesions and degrees of lesions of patients, it is often troublesome for doctors to select a balloon for surgery.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art, to provide a balloon catheter with a selectively expandable diameter, to solve the problem that the balloon catheter can only be expanded in a single way in the past, and the diameter of the expanded balloon is small, This leads to the small selection of doctors, and it is inconvenient for doctors to choose and operate during the operation.

The technical scheme adopted by the present invention to solve its technical problems is:

A balloon catheter with a selectively expandable diameter is provided, comprising

a central balloon, both ends are sealed with the outer wall of the core tube, and the central balloon is communicated with the inner cavity of the core tube;

a plurality of edge balloons arranged circumferentially around the central balloon;

The front soft head is respectively connected with the front end of the core tube and each edge balloon;

A multi-lumen tube, a middle lumen and a plurality of edge lumen are set in the multi-lumen tube, the front end of the middle lumen is connected with the rear end of the core tube, and the rear end of the middle lumen is connected with the middle Luer joint, so that the middle The luer connector is communicated with the core tube through the middle lumen;

The front end of each edge cavity is respectively connected with each edge balloon, and the rear end of each edge cavity is respectively connected with edge luer joints, so that the edge luer joint is communicated with the edge balloon through the edge cavity.

Further, both the center balloon and the edge balloon adopt variable diameter balloons.

Further, the variable diameter balloon is a conical balloon with a large distal end and a small proximal end.

Further, the two ends of the core tube are respectively connected with the front soft head and the multi-lumen tube by welding.

Further, two ends of the edge balloon are respectively connected with the front soft tip and the multi-lumen tube by welding.

Further, it also includes a wire guide mechanism, the wire guide mechanism includes

Three-way handle, using the three-way handle to replace the middle Luer connector;

The wire guide tube is inserted into the middle lumen of the core tube and the multi-lumen tube, the front end of which is sealed with the front soft head, and the rear end is connected to the three-way handle. The guide wire is inserted into the guide wire tube from the guide wire hole of the three-way handle. and protrudes from the front soft head.

The beneficial effects of the present invention are:

In the balloon catheter of the present invention, each balloon can be expanded independently, the diameter of the balloon can be selectively expanded, the overall expansion diameter range is large, and the safety in actual use is higher. The variable diameter balloon structure can adapt to the expansion of the special structure of the human body, and can also play a blocking role in the human body cavity, and the overall performance of the product is better.

Description of drawings

The present invention will be further described below with reference to the accompanying drawings.

Fig. 1 is the schematic diagram of traditional balloon catheter;

Among them, 10, balloon, 11, soft head, 12, outer tube, 13, core tube, 14, handle;

2 is a schematic diagram of a balloon catheter with a selectively expandable diameter according to Embodiment 1;

3 is a cross-sectional view of a multi-lumen tube;

4 is a schematic diagram of a balloon catheter with a selectively expandable diameter in Embodiment 2;

in,

2. Multi-lumen tube, 21, middle lumen, 22, marginal lumen;

31. Center balloon, 32. Edge balloon;

41. Middle Luer connector, 42. Edge Luer connector;

5. Front soft head;

6. Core tube.

Detailed ways

The present invention will now be further described with reference to the accompanying drawings. These drawings are all simplified schematic diagrams only to illustrate the basic structure of the present invention in a schematic manner, so they only show the structures related to the present invention.

Example 1

As shown in Figure 2 and Figure 3, a balloon catheter with a selectively expandable diameter, comprising:

The center balloon 31 is sealed with the outer wall of the core tube 6 at both ends, and the center balloon 31 is communicated with the inner cavity of the core tube 6;

A plurality of edge balloons 32 are circumferentially arranged around the central balloon 31;

The front soft head 5 is respectively connected with the front end of the core tube 6 and each edge balloon 32;

Multi-lumen tube 2, a middle lumen 21 and a plurality of edge lumen 22 are set in the multi-lumen tube 2, the front end of the middle lumen 21 is connected with the rear end of the core tube 6, and the rear end of the middle lumen 21 is connected the middle luer connector 41, so that the middle luer connector 41 communicates with the core tube 6 through the middle lumen 21;

The front end of each edge channel 22 is connected with each edge balloon 32 respectively, and the rear end of each edge channel 22 is connected with edge luer connector 42 respectively, so that the edge luer connector 42 communicates with the edge balloon 32 through the edge channel 22 .

In this embodiment, the middle Luer connector 41 and the edge Luer connector 42 have the same structure. As shown in FIG. 2 , they are open at both ends, with one end being the liquid inlet and the other end being the liquid outlet; The middle luer connector 41 and the edge luer connector 42 have liquid inlets to inject liquid into the center balloon 31 and the edge balloon 32, so that the balloons can bulge to support human tissue.

In this embodiment, the center balloon 31 and the edge balloon 32 are balloons with traditional structures, that is, the sidewalls of the balloons are located in a cylindrical structure, or are called non-diameter balloons.

Specifically, as an optional implementation in this embodiment, as shown in FIG. 2 and FIG. 3 , both ends of the core tube 6 are respectively connected with the front soft head 5 and the multi-lumen tube 2 by welding; Hot melt or ultrasonic welding.

Specifically, as an optional implementation in this embodiment, as shown in FIG. 2 and FIG. 3 , the two ends of the edge balloon 32 are respectively connected with the front soft head 5 and the multi-lumen tube 2 by welding; Use hot melt or ultrasonic welding.

During the operation of the balloon catheter with a selectively expandable diameter in this embodiment, a doctor can selectively expand a single balloon or expand it as a whole according to needs, and the expansion diameter range is large. Such dilation can reduce damage to lesions that do not require dilation. At the same time, the structure is composed of multiple edge balloons 32. Compared with the ordinary balloon catheter, the balloon catheter of this structure has a higher burst pressure (the larger the balloon, the smaller the burst pressure), which can improve the actual use process. safety.

Embodiment 2

As shown in FIG. 4 , this embodiment is based on Embodiment 1, and the difference is that both the center balloon 31 and the edge balloon 32 in this embodiment use variable diameter balloons.

Specifically, as an optional implementation manner in this embodiment, as shown in FIG. 4 , the variable diameter balloon is a conical balloon with a large distal end and a small proximal end.

During the operation of the selectively expandable diameter balloon catheter of this embodiment, the doctor can arbitrarily control the expansion of each balloon, and can selectively expand the diameter of the balloon, and the expansion diameter range is large. The balloon has a tapered shape with a large distal end and a small proximal end, which can adapt to the expansion of the special structure of the human body, and can also play a role in blocking the human body cavity.

Embodiment 3

This embodiment is based on Embodiment 1 and Embodiment 2, and the difference is that: the balloon catheter of this embodiment further includes a guide wire mechanism, and the guide wire mechanism includes

Three-way handle, in this embodiment, a three-way handle needs to be used to replace the middle Luer connector 41;

The wire guide tube is inserted into the middle lumen 21 of the core tube 6 and the multi-lumen tube 2, its front end is sealedly connected with the front end soft head 5, and its rear end is connected to the three-way handle, and the guide wire passes through the guide wire hole of the three-way handle. Insert the guide wire tube and extend from the front soft tip 5.

In this embodiment, the three-way handle 14 is an existing component. For details, refer to FIG. 1 . The three-way handle 14 includes a liquid inlet, a liquid outlet and a guide wire insertion port; the liquid inlet is connected to the middle cavity. 21. The guide wire insertion port is connected to the rear end of the guide wire tube.

During the operation of the balloon catheter of this embodiment, under the monitoring of an endoscope or other auxiliary equipment, the occlusion and expansion balloon catheter is inserted along the end of the guide wire, and the balloon is moved by 2-3 cm each time. Send it to the stenosis, and confirm that the two imaging marks are located at both ends of the stenosis. Use a pressure pump with a pressure gauge to slowly inject liquid into the balloon, and stop pressurizing when the working pressure is reached.

Taking the above ideal embodiments according to the present invention as inspiration, and through the above description, relevant personnel can make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the contents in the specification, and the technical scope must be determined according to the scope of the claims.

Claims (6)

1. A balloon catheter capable of selectively expanding diameter is characterized by comprising

The two ends of the central saccule are hermetically connected with the outer wall of the core tube, and the central saccule is communicated with the inner cavity of the core tube;

A plurality of edge balloons circumferentially arranged around the central balloon;

the front end soft head is respectively connected with the front end of the core tube and each edge balloon;

the multi-cavity tube is internally provided with a middle cavity and a plurality of edge cavities, the front end of the middle cavity is connected with the rear end of the core tube, and the rear end of the middle cavity is connected with a middle luer connector so that the middle luer connector is communicated with the core tube through the middle cavity;

the front end of each edge cavity channel is respectively connected with each edge balloon, and the rear end of each edge cavity channel is respectively connected with an edge luer connector, so that the edge luer connector is communicated with the edge balloons through the edge cavity channels.

2. The selectably expandable diameter balloon catheter according to claim 1,

the center saccule and the edge saccule both adopt reducing saccules.

3. The selectively expandable diameter balloon catheter of claim 2,

the reducing saccule is a conical saccule with a large far end and a small near end.

4. The selectively expandable diameter balloon catheter of claim 1,

and two ends of the core pipe are respectively connected with the front soft head and the multi-cavity pipe in a welding manner.

5. The selectively expandable diameter balloon catheter of claim 1,

And two ends of the edge saccule are respectively connected with the front soft head and the multi-cavity tube in a welding manner.

6. The selectably expandable diameter balloon catheter according to claim 1,

still include the seal wire mechanism, seal wire mechanism includes

The three-way handle is adopted to replace a middle luer connector;

the guide wire tube penetrates through the middle cavity of the core tube and the multi-cavity tube, the front end of the guide wire tube is hermetically connected with the front soft head, the rear end of the guide wire tube is connected with the three-way handle, and the guide wire is inserted into the guide wire tube from a guide wire hole of the three-way handle and extends out of the front soft head.

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