Spiral double-layer reinforced balloon dilatation catheter
The balloon dilation catheter with spiral double-layer reinforcement, with its inner dilation mesh and outer spiral mesh providing support and compliance, solves the problems of insufficient support and rupture risk of existing catheters in complex lesions, and achieves accurate dilation and smooth withdrawal.
Patent Information
- Application Number
- CN202422710330.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-07
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-11-07
AI Technical Summary
Existing coronary balloon dilation catheters lack sufficient support, have poor flexibility, and pose a risk of balloon rupture when dealing with complex lesions.
The spiral double-layer enhanced balloon dilation catheter, including an inner dilation mesh and an outer spiral mesh, provides radial support and compliance. A contrast ring ensures accurate balloon positioning, and a pressure pump injects contrast agent to dilate the balloon to the target diameter.
It improves the support and flexibility of the balloon, ensures uniform expansion of the lesion area, reduces the risk of balloon rupture, and achieves accurate lesion expansion and smooth withdrawal process.
Smart Images
Figure CN223668456U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of blood vessel expansion, more particularly, it relates to a spiral double-layer reinforced balloon expansion catheter. BACKGROUND
[0002] The existing coronary balloon expansion catheters on the market are generally composed of a balloon with a single-layer structure, a catheter, a guide wire lumen, a filling lumen and the like. The front end of the catheter is provided with a balloon for expanding blood vessels, the balloon is provided with a guide wire lumen distributed therein for placing a guide wire to guide the catheter through the blood vessels; the tail end of the catheter is connected with a handle and a hose, and a contrast medium is injected or extracted through an external pressure pump, so that the balloon expands or shrinks. Such catheters generally adopt a single-layer balloon structure, mainly rely on the guide wire guidance and the flexibility of the catheter to pass through the complex blood vessels, and perform the expansion and stent implantation of the blood vessels. The balloon products on the market include cutting balloons, high-pressure balloons and scored balloons, each of which has a specific application scenario, but there are some obvious limitations in dealing with complex lesions.
[0003] Therefore, it is necessary to provide a spiral double-layer reinforced balloon expansion catheter to solve the above problems. SUMMARY
[0004] Based on the above problems existing in the prior art, the purpose of the embodiments of the present application is to provide a spiral double-layer reinforced balloon expansion catheter to improve the supportability of the balloon and improve the flexibility and compliance.
[0005] The technical scheme adopted by the present application to solve the technical problems is: a spiral double-layer reinforced balloon expansion catheter, comprising a catheter seat, a buffer tube is fixedly connected to the front end of the catheter seat, a double-lumen tube is fixedly connected to the front end of the buffer tube, a balloon is fixedly connected to the front end of the double-lumen tube, a sharp end is fixedly installed at the front end of the balloon, and a support assembly is fixedly installed on the inner and outer sides of the balloon.
[0006] Further, the support assembly comprises an inner expansion net, and the inner expansion net is attached to the inner wall of the balloon.
[0007] Further, an outer thread net is attached to the outer wall of the balloon.
[0008] Further, the outer thread net and the inner expansion net are both made of a flexible support material.
[0009] Further, an inner tube is fixedly connected to the front end of the double-lumen tube, the inner tube penetrates the balloon, and a contrast ring is fixedly installed on the surface of the inner tube.
[0010] Further, a filling lumen is fixedly installed on the upper end of the catheter seat, and a guide wire lumen is fixedly installed on the rear end of the catheter seat.
[0011] The utility model discloses a beneficial effect is: the guide wire needs to pass through the pathological change part and reaches the distal end, pushes into the coronary artery pathological change part along the guide wire again to the balloon, and the developing ring is not radiopaque and is black through the X -ray irradiation to the inner tube surface, thereby ensuring the balloon positioning accuracy through the position of developing ring observation, ensuring the position accuracy of good balloon, and then injecting the developing agent to the filling cavity through the pressure pump (not shown in the drawing), and the developing agent will pour into the inner tube through the double -cavity pipe, and then be guided into the balloon through the inner tube, make the balloon gradually expand to the target diameter, thereby expanding the blood vessel of pathological change part. BRIEF DESCRIPTION OF DRAWINGS
[0012] The description and drawings of the utility model constitute a part of the utility model, and are used to provide further understanding on the utility model, and the illustrative embodiment of the utility model and the explanation thereof are used to explain the utility model, and do not constitute improper limitation to the utility model.
[0013] Figure 1 It is the whole schematic view of a spiral double-layer reinforced balloon dilatation catheter in the application;
[0014] Figure 2 It is Figure 1 The cross section structure schematic view of the balloon;
[0015] In the drawing: 1, catheter seat;2, buffer tube;3, tip;4, balloon;5, double -cavity pipe;6, filling cavity;7, guide wire cavity;8, inner tube;9, developing ring;10, outer thread net;11, inner layer expansion net. DETAILED DESCRIPTION
[0016] It should be explained that the embodiment in the application and the features in the embodiment can be combined with each other in the case of no conflict.The utility model will be explained in detail below with reference to the drawings and in combination with the embodiment.
[0017] It should be pointed out that all the technical and scientific terms used in the application have the same meaning as that understood by the ordinary skilled person in the technical field to which the application belongs, unless otherwise indicated.
[0018] In the utility model, the orientation such as "up, down" is generally for the direction shown in the drawing, or for the vertical, perpendicular or gravity direction, unless otherwise stated.The same, for the convenience of understanding and description, "left, right" is generally for the left and right shown in the drawing, and "inner, outer" refers to the inner and outer relative to the contour of each component, but the above orientation words are not used to limit the utility model.
[0019] As Figures 1-2As shown, the application provides a spiral double-layer reinforced balloon dilatation catheter, which comprises a catheter seat 1, the front end of the catheter seat 1 is fixedly connected with a buffer tube 2, the front end of the buffer tube 2 is fixedly connected with a double-lumen tube 5, the front end of the double-lumen tube 5 is fixedly connected with a balloon 4, the front end of the balloon 4 is fixedly installed with a tip 3, and the inner and outer sides of the balloon 4 are fixedly installed with a support assembly.
[0020] The support assembly comprises an inner-layer expansion net 11 which is attached to the inner wall of the balloon 4.
[0021] The outer wall of the balloon 4 is attached with an outer-thread net 10.
[0022] The outer-thread net 10 and the inner-layer expansion net 11 are both made of flexible support material.
[0023] The front end of the double-lumen tube 5 is fixedly connected with an inner tube 8, the inner tube 8 penetrates through the balloon 4, and the surface of the inner tube 8 is fixedly installed with a developing ring 9.
[0024] The upper end of the catheter seat 1 is fixedly installed with a filling cavity 6, and the rear end of the catheter seat 1 is fixedly installed with a guide wire cavity 7.
[0025] Specifically, the staff first put the guide wire through the guide wire cavity 7 through the double-lumen tube 5, and through the vascular intervention technology, the guide wire is sent to the lesion site of the patient's coronary artery stenosis or occlusion, the guide wire needs to pass through the lesion site and reach the distal end, and then the balloon 4 is pushed along the guide wire into the coronary artery lesion site. The developing ring 9 on the surface of the inner tube 8 is irradiated by X-ray, the developing ring 9 is not radiopaque and is black, so that the position of the developing ring 9 is observed to ensure the accurate positioning of the balloon 4, and then the pressure pump (not shown in the figure) is used to inject the developing agent into the filling cavity 6, the developing agent will flow into the inner tube 8 through the double-lumen tube 5, and then be introduced into the balloon 4 through the inner tube 8, so that the balloon gradually expands to the target diameter, thereby expanding the blood vessels of the lesion site. With the injection of the developing agent, the balloon 4 gradually expands, the inner layer expansion net 11 is opened with the expansion of the balloon 4 to provide radial support for the balloon 4, and the outer thread net 10 is also expanded with the expansion of the balloon 4 to provide compliance for the balloon 4, ensuring that the balloon 4 can uniformly expand the lesion area. According to the stubborn degree of the lesion, the pressure is gradually increased, but it should not exceed the maximum pressure limit of the balloon 4. The inner layer expansion net 11 and the outer thread net 10 ensure that the balloon can uniformly distribute the expansion force under high pressure, preventing local overexpansion or rupture. During the expansion of the balloon 4, the expansion effect of the balloon 4 is observed through the developing ring 9 to confirm that the coronary blood flow of the lesion area has been restored, the lesion site has been fully expanded, and there is no residual stenosis or plaque. If necessary, the expansion can be repeated or a larger size balloon 4 can be used. After the expansion is completed, the pressure pump (not shown in the figure) is used to extract the developing agent, so that the balloon 4 quickly shrinks. The design of the inner layer expansion net 11 and the outer thread net 10 ensures that the balloon 4 can closely fit the inner tube 8 when it shrinks, which will not affect the withdrawal process. After the balloon 4 is shrunk, the inner tube 8, the double-lumen tube 5 and the shrunk balloon 4 are withdrawn along the guide wire, thereby completing the expansion of the coronary blood vessels. Through the above steps, the problems of insufficient support, poor flexibility, high risk of balloon rupture and the like in the existing coronary balloon expansion catheter in dealing with complex coronary lesions are solved.
[0026] Obviously, the above-described embodiments are only part of the embodiments of the present new type, not all the embodiments. Based on the embodiments in the present new type, all other embodiments obtained by those of ordinary skill in the art without creative labor should belong to the scope of protection of the present new type.
[0027] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, it means that there is a feature, step, work, device, component and / or combination thereof.
[0028] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.
[0029] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
[0030] The above description is merely a preferred embodiment of this invention. The scope of protection of this invention is not limited to the above embodiments. All technical solutions falling within the scope of this invention's concept are within the scope of protection of this invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this invention should also be considered within the scope of protection of this invention.
Claims
1. A helical double-layer reinforced balloon dilation catheter, characterized by: The utility model provides a kind of catheter, including catheter seat (1), the front end of the catheter seat (1) is fixedly connected with buffer tube (2), the front end of the buffer tube (2) is fixedly connected with double-cavity tube (5), the front end of the double-cavity tube (5) is fixedly connected with balloon (4), the front end of the balloon (4) is fixedly installed with tip (3), the inside and outside of the balloon (4) is fixedly installed with support assembly.
2. The helical double-layer reinforced balloon dilation catheter of claim 1, wherein: The support assembly includes an inner layer expansion net (11) that is attached to the inner wall of the balloon (4).
3. The helical double-layer reinforced balloon dilation catheter of claim 2, wherein: The outer wall of the balloon (4) is attached to an outer threaded net (10).
4. The helical double-layer reinforced balloon dilation catheter of claim 3, wherein: Both the outer threaded net (10) and the inner layer expansion net (11) are made of flexible support material.
5. The helical double-layer reinforced balloon dilation catheter of claim 1, wherein: The front end of the double-cavity tube (5) is fixedly connected with an inner tube (8) that penetrates the balloon (4), and the surface of the inner tube (8) is fixedly installed with a developing ring (9).
6. The helical double-layer reinforced balloon dilation catheter of claim 1, wherein: The upper end of the catheter seat (1) is fixedly installed with a filling cavity (6), and the rear end of the catheter seat (1) is fixedly installed with a guide wire cavity (7).