Balloon dilatation catheter for dialysis vascular access

Abstract

The utility model relates to a balloon dilatation catheter for a dialysis vascular access, which belongs to the field of medical instruments and comprises a catheter. The expansion assembly is arranged on the outer side of the catheter and comprises an expansion balloon which is arranged on the outer side of the catheter; the plurality of medicine filling grooves are uniformly formed in the outer side of the dilatation balloon; and the protection assembly is arranged on the outer side of the guide pipe. According to the dialysis vascular access expansion device, through the arranged expansion assembly, the narrow portion of a dialysis vascular access can be expanded, and the narrow portion of the dialysis vascular access can be coated with medicine, so that cell hyperplasia of the dialysis vascular access is reduced, and the number of times of dialysis vascular access expansion needed by a patient is reduced; in this way, the personal safety of a patient can be improved, meanwhile, under the action of the protection assembly, the medicine in the medicine filling groove can be prevented from being added to the non-narrow part of the dialysis vascular access, and therefore the inhibition effect of the medicine on dialysis vascular access cells is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, concretely is a kind of balloon dilatation catheter for dialysis vascular access. BACKGROUND

[0002] Dialysis vascular access is the lifeline of uremia patient to carry out hemodialysis treatment, its function is to provide sufficient blood flow for patient, ensure the sufficiency of dialysis treatment, however, due to long-term use, vascular access can appear stenosis etc. Problem, affect dialysis effect, so it needs to use balloon dilatation catheter to expand dialysis vascular access.

[0003] The existing balloon dilatation catheter can expand the stenosis of dialysis vascular access, but the cells of the stenosis of dialysis vascular access will continue to proliferate, leading to the re-stenosis of dialysis vascular access, so that the patient needs to be dialyzed vascular access expansion multiple times, which can easily cause the patient to be infected, and further affect the personal safety of the patient, so the present application provides a balloon dilatation catheter for dialysis vascular access to solve the above technical problems. SUMMARY

[0004] In view of one or more of the above defects or improvement needs of the prior art, the utility model provides a balloon dilatation catheter for dialysis vascular access, which has the advantage of improving the personal safety of the patient.

[0005] To achieve the above object, the utility model provides the following technical scheme: a balloon dilatation catheter for dialysis vascular access, comprising a catheter;

[0006] The expansion assembly is arranged on the outer side of the catheter, which comprises an expansion balloon arranged on the outer side of the catheter, a plurality of medicine filling grooves evenly distributed on the outer side of the expansion balloon, and a protection assembly arranged on the outer side of the catheter.

[0007] The protection assembly is arranged on the outer side of the catheter.

[0008] As a further improvement of the utility model, the catheter further comprises a first mounting groove opened on the outer side of the catheter.

[0009] A second mounting groove is opened on the outer side of the catheter, and the expansion balloon is arranged on the inner side of the second mounting groove.

[0010] As a further improvement of the utility model, the first mounting groove and the second mounting groove are both annular mounting grooves.

[0011] As a further improvement of the utility model, the expansion assembly further comprises a liquid injection pipe which is communicable with the right side of the expansion balloon.

[0012] The connecting cylinder is communicated with the right end face of the liquid injection pipe.

[0013] As a further improvement of the utility model, the pipe embedding groove is arranged outside the catheter, and the liquid injection pipe is arranged inside the pipe embedding groove.

[0014] As a further improvement of the utility model, the protection assembly comprises a connecting ring arranged inside the first mounting groove.

[0015] The limiting groove is arranged outside the connecting ring.

[0016] The two yielding grooves are symmetrically arranged outside the connecting ring.

[0017] The protection sleeve is slidably arranged outside the connecting ring, and the balloon is arranged inside the protection sleeve.

[0018] The two limiting blocks are symmetrically arranged inside the protection sleeve, and both of the two limiting blocks are arranged inside the limiting groove.

[0019] As a further improvement of the utility model, the inner bottom surface of the yielding groove is an inclined surface, and both of the two yielding grooves are communicated with the limiting groove.

[0020] Overall, compared with the prior art, the above technical scheme conceived by the utility model has the beneficial effects including:

[0021] 1. The balloon dilatation catheter for dialysis vascular access in the preferred embodiment of the utility model can dilate the narrow part of the dialysis vascular access, coat the narrow part of the dialysis vascular access with medicine, reduce the cell proliferation of the dialysis vascular access, and thus reduce the number of times of dilating the dialysis vascular access of the patient, thereby improving the personal safety of the patient, and under the action of the protection assembly, the medicine in the medicine filling groove is prevented from being lost in the non-narrow part of the dialysis vascular access, thereby improving the inhibition effect of the medicine on the cells of the dialysis vascular access.

[0022] 2. The balloon dilatation catheter for dialysis vascular access in the preferred embodiment of the utility model has a simple overall structure and is convenient to operate, can coat the narrow part of the dialysis vascular access with medicine, prevent the medicine in the medicine filling groove from being lost in the non-narrow part of the dialysis vascular access, improve the personal safety of the patient, improve the inhibition effect of the medicine on the cells of the dialysis vascular access, and has good use value and application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The figure is a schematic diagram of the overall three-dimensional structure in the preferred embodiment of the utility model.

[0024] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the catheter in a preferred embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the overall three-dimensional structure of the expansion component in a preferred embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the overall exploded three-dimensional structure of the protective component in a preferred embodiment of the present invention;

[0027] Figure 5 This is a preferred embodiment of the present invention. Figure 4 Enlarged 3D structural diagram at point A.

[0028] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1, catheter; 11, first mounting groove; 12, second mounting groove; 2, dilation assembly; 21, dilation balloon; 22, drug filling groove; 23, injection tube; 24, connecting tube; 3, protective assembly; 31, connecting ring; 32, limiting groove; 33, clearance groove; 34, protective sleeve; 35, limiting block. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] In the embodiments, by Figures 1-5 Provided is a balloon dilation catheter for dialysis vascular access, which may optionally include, but is not limited to, catheter 1;

[0031] An expansion assembly 2 located outside the catheter 1 includes an expansion balloon 21 located outside the catheter 1; and a number of drug-filled slots 22 evenly distributed outside the expansion balloon 21.

[0032] The protective component 3 is located on the outside of the conduit 1.

[0033] This embodiment provides a balloon dilation catheter for dialysis vascular access according to the present invention. Through the dilation component 2, the dialysis vascular access can be dilated, and a drug that inhibits cell proliferation can be coated on the dialysis vascular access, thereby reducing the rate of cell proliferation and thus reducing the occurrence of restenosis. Furthermore, under the action of the protective component 3, the drug coated on the dilation component 2 can be protected, thereby preventing the drug coated on the outside of the dilation component 2 from being washed away by the non-narrowed part of the dialysis vascular access before the dilation component 2 reaches the narrow part of the dialysis vascular access when medical staff place the dilation component 2 into the dialysis vascular access.

[0034] Furthermore, such as Figure 2 As shown, in a preferred embodiment of the present invention, the catheter 1 further includes a first mounting groove 11, which is opened on the outside of the catheter 1; a second mounting groove 12, which is opened on the outside of the catheter 1, and the dilation balloon 21 is disposed on the inside of the second mounting groove 12.

[0035] Furthermore, both the first mounting groove 11 and the second mounting groove 12 are annular mounting grooves.

[0036] Furthermore, such as Figure 3 As shown, the expansion component 2 in the preferred embodiment of this utility model further includes an injection tube 23, which is connected to the right side of the expansion balloon 21; and a connecting tube 24, which is connected to the right end face of the injection tube 23.

[0037] Furthermore, a catheter embedding groove is provided on the outside of the catheter 1, and the injection tube 23 is located inside the embedding groove. This ensures that the injection tube 23 will not interfere with the catheter 1 when medical staff place the catheter 1 into the dialysis vascular access.

[0038] More specifically, the inner side of the connecting tube 24 is adapted to the injection port of the syringe, so that the syringe filled with saline can be connected to the connecting tube 24. Then, the syringe delivers saline into the dilating balloon 21 through the injection tube 23, thereby dilating the dilating balloon 21.

[0039] In this embodiment, the plurality of preferred embodiments of the expansion assembly 2 are given, by placing the catheter 1 and the expansion balloon 21 outside the catheter 1 into the dialysis vascular access, and making the expansion balloon 21 located at the stenosis in the dialysis vascular access, then connecting the syringe filled with normal saline in the connecting barrel 24, then the syringe sends normal saline into the expansion balloon 21 through the injection tube 23, so that the expansion balloon 21 is expanded, and the expansion balloon 21 expands the stenosis in the dialysis vascular access, and the medicine for inhibiting cell proliferation can be filled in the medicine filling groove 22, so that when the expansion balloon 21 expands the stenosis in the dialysis vascular access, the medicine in the medicine filling groove 22 contacts the stenosis in the dialysis vascular access, thereby inhibiting the cell growth rate of the stenosis in the dialysis vascular access, and reducing the occurrence of restenosis in the dialysis vascular access.

[0040] Further, as Figures 4-5 The protection assembly 3 in the preferred embodiment of the utility model includes a connecting ring 31 arranged on the inner side of the first mounting groove 11, a limiting groove 32 arranged on the outer side of the connecting ring 31, two accommodating grooves 33 symmetrically arranged on the outer side of the connecting ring 31, a protective sleeve 34 slidably arranged on the outer side of the connecting ring 31, with the expansion balloon 21 located on the inner side of the protective sleeve 34, and two limiting blocks 35 symmetrically arranged on the inner side of the protective sleeve 34, with the two limiting blocks 35 both located on the inner side of the limiting groove 32.

[0041] Further, the inner side bottom surface of the accommodating groove 33 is an inclined surface, and the two accommodating grooves 33 are both in communication with the limiting groove 32.

[0042] Further, the protective sleeve 34 is an elastic protective sleeve, so that when the protective sleeve 34 is pulled, the protective sleeve 34 can be moved from the outer side of the expansion balloon 21.

[0043] In this embodiment, the plurality of preferred embodiments of the protection assembly 3 are given, and the medicine in the medicine filling groove 22 can be protected by the protective sleeve 34, so as to avoid the medicine in the medicine filling groove 22 being absorbed by the non-stenosis part of the dialysis vascular access. When the expansion balloon 21 needs to be expanded, the protective sleeve 34 is rotated, so that the two limiting blocks 35 on the inner side of the protective sleeve 34 are aligned with the two accommodating grooves 33, then the protective sleeve 34 is pulled, so that the two limiting blocks 35 are moved out of the limiting groove 32, and the protective sleeve 34 no longer protects the medicine in the medicine filling groove 22, so that the expansion balloon 21 can be normally expanded, and the non-stenosis part of the dialysis vascular access can absorb the medicine.

[0044] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and implementations, it is to be understood that the terminology used is for the purpose of descriptive clarity and that it is intended to be limited only by the words recited in the appended claims. The scope of the present application shall be limited only by the claims.

[0045] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A balloon dilatation catheter for dialysis vascular access, characterized by, The utility model provides a kind of catheter (1); Expansion assembly (2) is arranged outside the catheter (1), including expansion balloon (21), is arranged outside the catheter (1);Several quantity of medicine filling groove (22) are evenly distributed and opened outside expansion balloon (21); Protection assembly (3) is arranged outside the catheter (1).

2. The balloon dilation catheter for dialysis vascular access according to claim 1, characterized by, The catheter (1) further includes a first mounting slot (11) opened outside the catheter (1); A second mounting slot (12) is opened outside the catheter (1), and the expansion balloon (21) is arranged inside the second mounting slot (12).

3. The dialysis vascular access balloon dilation catheter of claim 2, wherein, The first mounting slot (11) and the second mounting slot (12) are both annular mounting slots.

4. The dialysis vascular access balloon dilation catheter of claim 2, wherein, The expansion assembly (2) further includes a liquid injection tube (23) communicatively arranged on the right side of the expansion balloon (21); A connecting cylinder (24) is communicatively arranged on the right end surface of the liquid injection tube (23).

5. The dialysis vascular access balloon dilation catheter of claim 4, wherein, The catheter (1) is provided with a buried pipe slot outside, and the liquid injection tube (23) is located inside the buried pipe slot.

6. The balloon dilation catheter for dialysis vascular access of claim 4, wherein, The protection assembly (3) includes a connecting ring (31) arranged inside the first mounting slot (11); A limiting slot (32) is opened outside the connecting ring (31); Two accommodation slots (33) are symmetrically opened outside the connecting ring (31); A protective sleeve (34) is slidably arranged outside the connecting ring (31), and the expansion balloon (21) is located inside the protective sleeve (34); Two limiting blocks (35) are symmetrically arranged inside the protective sleeve (34), and both of the limiting blocks (35) are located inside the limiting slot (32).

7. The dialysis vascular access balloon dilation catheter of claim 6, wherein, The inner bottom surface of the accommodation slot (33) is an inclined surface, and both of the accommodation slots (33) are in communication with the limiting slot (32).

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