CN111420248A

CN111420248A - Elastic balloon recovery device

Info

Publication number: CN111420248A
Application number: CN202010275126.5A
Authority: CN
Inventors: 王越; 时玉楠; 张晨朝; 王国辉
Original assignee: Weiming Medical Equipment Shanghai Co ltd
Current assignee: Weiming Medical Equipment Shanghai Co ltd
Priority date: 2020-04-09
Filing date: 2020-04-09
Publication date: 2020-07-17

Abstract

The invention discloses an elastic balloon recovery device, which relates to the field of balloon dilatation catheters and comprises a catheter, a balloon and an elastic protection sleeve, wherein two ends of the balloon are connected with the catheter, the elastic protection sleeve covers the outside of the balloon, and two ends of the elastic protection sleeve are respectively connected with the head end of the catheter and the tail end of the catheter. The invention ensures that the saccule completely returns to the initial shape after pressure relief, and has the characteristic of easy implementation.

Description

Elastic balloon recovery device

Technical Field

The invention relates to the field of balloon dilatation catheters, in particular to an elastic balloon recovery device.

Background

The saccule dilating catheter is one kind of soft catheter with expandable saccule in the head end and is used in dilating narrow hollow organs, such as blood vessel, etc.

The catheter is generally of a double-layer structure, the saccule is attached to the outer surface of the outer layer tube, a gap is reserved between the outer layer tube and the inner layer tube, the gap is communicated with the saccule, and the head end of the catheter is closed.

After the saccule is pushed to the stenotic lesion part, certain liquid or gas is injected into a gap between the outer layer tube and the inner layer tube from the tail end of the saccule catheter, so that the saccule is pressurized and expanded. The narrow part is treated through the physical expansion of the saccule. After the treatment is finished, the pressure is relieved, the balloon is restored along the surface crease, and the balloon catheter is withdrawn.

Existing balloon dilation catheters typically employ balloon folding techniques to reduce the diameter of the balloon. After the saccule is pushed to a narrow lesion part, the saccule is expanded by pressurizing to treat the lesion part, and then the saccule is recovered by pressure relief. The unable complete folding phenomenon of sacculus easily appears at the pressure release in-process in current sacculus, leads to the sacculus diameter behind the pressure release to be greater than initial diameter, and then leads to sacculus withdrawal in-process vascular damage, leads to the vascular wall to break when serious, brings unnecessary misery for the patient, has also increased clinical operation's risk simultaneously.

Accordingly, those skilled in the art have endeavored to develop a device that will allow the balloon to fully recover.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, the present invention is directed to a balloon that is fully restored to its original shape after being deflated.

In order to achieve the purpose, the invention provides an elastic balloon recovery device which is characterized by comprising a catheter, a balloon and an elastic protection sleeve, wherein the two ends of the balloon are connected with the catheter, the elastic protection sleeve covers the outside of the balloon, and the two ends of the elastic protection sleeve are respectively connected with the head end of the catheter and the tail end of the catheter.

Further, the elastic protection sleeve is of a single-layer cylindrical structure.

Furthermore, the elastic protection sleeve is tightly attached to the outer part of the balloon and completely covers the balloon.

Further, the elastic protection sleeve has elasticity, and the wall thickness of the elastic protection sleeve is changed to change the elasticity of the elastic protection sleeve.

Furthermore, the connection mode that the elastic protection sleeve is connected with the head end of the catheter and the tail end of the catheter is gluing or welding.

Furthermore, the elastic protection sleeve is made of a silicon rubber material, a polyurethane material or a purified natural rubber material.

Further, the elastic protection sleeve is completely restored to an undeformed initial state after being elastically deformed.

Further, the balloon has elasticity and expands after gas or liquid is introduced through the catheter.

Furthermore, the elastic deformation amount of the balloon is within the elastic deformation amount range of the material of the elastic protection sleeve.

Further, the balloon has a folded configuration.

The invention can lead the saccule expanded by pressure to completely return to the shape before pressure application under the action of the elastic protective sleeve after pressure release.

The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.

Drawings

FIG. 1 is a structural view of a preferred embodiment of the present invention;

FIG. 2 is a schematic view of the operation of a balloon catheter without the practice of the invention;

fig. 3 is a schematic view of a balloon catheter failing to return to an initial state without the practice of the present invention.

Wherein: 1-catheter, 11-catheter head, 12-catheter tail, 2-balloon, 21-balloon original state, 22-balloon pressing state, 23-balloon unsuccessful folding, 3-elastic protective sleeve.

Detailed Description

The technical contents of the preferred embodiments of the present invention will be more clearly and easily understood by referring to the drawings attached to the specification. The present invention may be embodied in many different forms of embodiments and the scope of the invention is not limited to the embodiments set forth herein.

In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.

As shown in fig. 1, the structure of a preferred embodiment of the invention comprises a catheter 1, a balloon 2 and an elastic protection sleeve 3, wherein two ends of the balloon 2 are connected with the catheter, namely a catheter head end 11 and a catheter tail end 12. The elastic protection sleeve 3 is covered on the outer surface of the balloon 2 in a close fitting mode, and the length of the elastic protection sleeve is longer than that of the balloon 2. The elastic protective sleeve 3 is connected with the head end 11 and the tail end 12 of the catheter in a gluing or welding mode, and the connection is tight. The balloon 2 has a folded configuration.

After the device is pushed to a required narrow part, the balloon 2 is inflated by using the catheter 1 with gas or liquid, so that the balloon 2 and the elastic protective sleeve 3 covered on the balloon 2 form an expansion state.

After the balloon 2 is decompressed through the catheter 1, the balloon returns to an unexpanded state under the elastic action of the elastic protective sleeve 3, so that the balloon catheter is easy to retract.

In the implementation process, the material and thickness of the elastic protection sleeve 3 can be changed according to the required elasticity. The greater the elasticity that is generally required, the greater the thickness of the elastic sheath 3.

In the implementation process, the elastic protection sleeve 3 needs to have good biological property, weather aging resistance and disinfection resistance in terms of material selection. Generally, a silicone rubber material, or a polyurethane material, or a purified natural rubber material may be selected.

Fig. 2 shows a schematic view of the operation of the balloon catheter without the invention. Fig. 3 is a schematic view of a balloon catheter failing to return to an initial state without the practice of the present invention. Fig. 2 is a comparison with fig. 3 to illustrate the problem solved by the elastic balloon recovery device of the present invention. In fig. 2, the original state 21 of the balloon is changed into a balloon-applied state 22 after being applied with pressure, and in an ideal state, the balloon is decompressed and then returns to the original state 21 of the balloon. However, in the case where the balloon 3 is not folded, the state after the pressure relief is the state in which the balloon in fig. 3 is not successfully folded 23.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims

1. The utility model provides an elasticity sacculus recovery device which characterized in that, includes pipe, sacculus and elastic protection cover, wherein, the sacculus both ends are connected the pipe, the elastic protection cover in the sacculus is outside, the elastic protection cover both ends are connected respectively in pipe head end and pipe tail end.

2. The resilient balloon recovery device of claim 1, wherein said resilient protective sheath is a single layer cylindrical structure.

3. The resilient balloon recovery device of claim 2, wherein said resilient protective sleeve is disposed immediately outside said balloon, completely covering said balloon.

4. The resilient balloon recovery device of claim 3, wherein said resilient protective sheath is resilient and varying its wall thickness varies its magnitude of resiliency.

5. The resilient balloon recovery device of claim 4, wherein said resilient sheath is attached to said catheter tip and said catheter tail by gluing or welding.

6. The resilient balloon recovery device of claim 5, wherein said resilient protective sheath is made of silicone rubber material, polyurethane material, or purified natural rubber material.

7. The resilient balloon recovery device of claim 6, wherein said resilient protective sheath is fully restored to an undeformed initial state after being elastically deformed.

8. The resilient balloon recovery device of claim 1, wherein said balloon is resilient and expands upon the introduction of a gas or liquid through said catheter.

9. The resilient balloon recovery device of claim 8, wherein the amount of resilient deformation of said balloon is within the range of the amount of resilient deformation of said elastic protective sheath material.

10. The resilient balloon recovery device of claim 9, wherein said balloon has a folded configuration.