Balloon dilatation catheter

Abstract

The utility model discloses a balloon dilatation catheter which comprises a catheter seat, the catheter seat is provided with a guide wire tube, a balloon branch tube and a stress release tube, catheter cavities communicated with each other are arranged in the guide wire tube and the stress release tube, and a balloon branch cavity is arranged in the balloon branch tube; the catheter comprises a catheter near end and a catheter far end, the catheter near end is clamped in the catheter cavity, and a guide wire radiography cavity and a filling cavity are formed in the catheter; the balloon is arranged at the far end of the catheter, a balloon cavity is formed in the balloon and communicated with the balloon branch cavity through a filling cavity, the guide wire radiography cavity comprises a guide wire inlet and a guide wire outlet, plugging pieces are arranged at the two ends of the filling cavity, and the problems that in an existing operation, a radiography tube and a balloon tube need to be replaced continuously, operation is complex, and the overall time is long are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to blood vessel catheter equipment field, concretely is a balloon dilatation catheter. BACKGROUND

[0002] For the problem of arterial stenosis, in the interventional operation treatment, generally adopt balloon dilatation catheter to carry out percutaneous coronary intervention (PCI) or percutaneous transluminal angioplasty (PTA), through the balloon dilatation arterial stenosis part, make blood flow recovery, ultimately reach the purpose of revascularization. And before using balloon dilatation catheter, generally adopt contrast catheter to inject contrast agent to the lesion site, then replace balloon dilatation catheter and carry out treatment.

[0003] The application file with the existing patent number CN201611154447.X discloses a balloon catheter, the balloon catheter includes inner tube, balloon, developing ring, outer tube and catheter seat, the developing ring is pressed and is embedded on the inner tube, the distal end of the inner tube is fixed in the distal end part of the balloon, the distal end of the outer tube is fixed in the proximal end of the balloon, the proximal end of the outer tube is fixed in the catheter seat, the inner wall of the outer tube and the outer wall of the inner tube are coated with coating, the coating includes methyl silicone oil layer and polydimethylsiloxane layer, the methyl silicone oil layer is arranged between the inner wall of the outer tube / the outer wall of the inner tube and the polydimethylsiloxane layer.

[0004] But the main defect of the above scheme is that: in the operation, need to replace the catheter to realize the angiography and balloon dilatation, the operation is complicated, and the treatment cost is high, when treating the long lesion position, need to carry out angioplasty and angiography in succession in multiple positions, the operation time is long, when the traditional balloon dilatation, in order to prevent the distal vascular ischemia, the balloon dilatation time is short, therefore, the operation is complicated, and the operation time is long, therefore, need to design a balloon dilatation catheter, the balloon dilatation catheter with angiography function can reduce the operation time. UTILITY MODEL CONTENT

[0005] In order to solve the problem that the contrast tube and the balloon tube need to be replaced constantly in the existing operation process, resulting in complex operation and long overall time.

[0006] The utility model discloses a balloon dilatation catheter, which comprises:

[0007] The catheter seat is provided with a guide wire tube, a balloon branch pipe and a stress release pipe, the guide wire tube and the stress release pipe are provided with a catheter cavity connected with each other, and the balloon branch pipe is provided with a balloon branch cavity.

[0008] The catheter comprises a catheter proximal end and a catheter distal end, the catheter proximal end is clamped in the catheter cavity, and a guide wire angiography cavity and a filling cavity are arranged in the catheter.

[0009] The balloon is arranged on the catheter distal end, a balloon cavity is arranged in the balloon, and the balloon cavity is communicated with the filling cavity and the balloon branch cavity.

[0010] As an embodiment of the utility model, the guide wire angiography cavity comprises a guide wire inlet and a guide wire outlet.

[0011] As an embodiment of the utility model, the filling cavity is provided with a sealing element at both ends.

[0012] As an embodiment of the utility model, a plurality of angiography holes are formed in the catheter, and each angiography hole is communicated with the guide wire angiography cavity.

[0013] As an embodiment of the utility model, the angiography hole is located between the balloon and the catheter seat, the distance between the angiography hole and the balloon is 5-15 cm,

[0014] As an embodiment of the utility model, two glue dispensing holes are formed in the catheter seat, each glue dispensing hole is filled with glue, and the glue is located between the catheter seat and the catheter.

[0015] As an embodiment of the utility model, a second through hole is further formed in the filling cavity of the catheter distal end, the second through hole is located in the balloon, and the balloon cavity is communicated with the filling cavity through the second through hole.

[0016] As an embodiment of the utility model, a first through hole is further formed in the filling cavity of the catheter proximal end, and the balloon branch cavity is communicated with the filling cavity through the first through hole.

[0017] As an embodiment of the utility model, the cross section of the guide wire angiography cavity is circular, and the cross section of the filling cavity is a meniscus shape.

[0018] The utility model brings the beneficial effects that:

[0019] 1. The utility model discloses a plurality of angiography holes for angiography on the guide wire angiography cavity of the catheter close to the balloon, which has the function of angiography on the basis of meeting the use requirement of the traditional balloon expansion catheter. The operation of replacing the catheter during the operation is reduced, and time and cost are saved.

[0020] 2. The guide wire angiography cavity of the utility model has the functions of angiography and guide wire, and does not block the blood flow during balloon expansion, so that the balloon has a longer wall sticking time and better expands the lesion site. The drawings are described.

[0021] The accompanying drawings, which form a part of the present application, are used to provide further understanding of the application and are incorporated herein for reference in conjunction with the following detailed description. The embodiments of the present application, as well as a preferred mode of use, will be more apparent from the following detailed description taken in conjunction with the accompanying drawings.

[0022] Figure 1 is a structural schematic diagram of the whole application;

[0023] Figure 2 is a partial structural enlarged view of the application; Figure 1

[0024] Figure 3 is a sectional structural schematic diagram of the catheter of the application;

[0025] Figure 4 is a sectional schematic diagram of the catheter seat and the proximal end of the catheter of the application;

[0026] Figure 5 is a sectional schematic diagram of the distal end of the catheter and the balloon of the application;

[0027] Figure 6 is a partial structural enlarged view of the application; Figure 5

[0028] In the figure: catheter seat 1; catheter cavity 10; guide wire tube 11, balloon branch tube 12; balloon branch cavity 120; stress release tube 13; catheter 2; proximal end of catheter 21; first through hole 210; distal end of catheter 22; second through hole 220; guide wire angiography cavity 201; filling cavity 202; occlusion member 2021; angiography hole 203; guide wire inlet 204; guide wire outlet 205; balloon 3; balloon cavity 30; dispensing hole 4; glue 5. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications will also change accordingly.

[0031] Embodiment 1​​

[0032] As Figures 1-6 shown, the utility model discloses a balloon dilatation catheter, in order to solve the existing existing surgery, contrast tube and balloon tube need to be replaced constantly, leading to the operation complex, the whole time long problem.

[0033] As Figure 1 , Figure 2 shown, the utility model discloses a balloon dilatation catheter, mainly includes: catheter seat 1, catheter 2 and balloon 3, in catheter seat 1 is provided with including guide wire tube 11, balloon branch pipe 12 and stress release pipe 13, guide wire tube 11 and stress release pipe 13 are provided with the catheter cavity 10 of intercommunication, balloon branch pipe 12 is provided with balloon branch cavity 120.

[0034] Traditional balloon dilatation catheter only includes these three parts, therefore can only carry out balloon dilatation, when carrying out other operation, then need to replace equipment, therefore will increase the operation process of surgery, increase the operation time, and increase the additional risk.

[0035] Therefore, the catheter 2 is reformed and set, as Figures 1-2 shown, the catheter 2 includes catheter proximal end 21 and catheter distal end 22, and the catheter proximal end 21 is clamped in the catheter cavity 10, and two point glue holes 4 are formed in the catheter seat 1, and the point glue holes 4 are filled with glue 5, and the glue 5 is located between the catheter seat 1 and the catheter 2.

[0036] When the catheter proximal end 21 of the catheter 2 is clamped and aligned with the catheter seat 1, the glue 5 is filled in the two point glue holes 4, so that the catheter proximal end 21 and the catheter seat 1 are fully adhered.

[0037] Meanwhile, the catheter 2 is provided with two guide wire contrast cavities 201 and filling cavities 202 that are not communicated with each other, the guide wire contrast cavity 201 is used for injecting contrast agent and placing a guide wire in the early stage, and the filling cavity 202 is used for communicating with the balloon 3 and controlling the expansion and contraction of the balloon 3.

[0038] As Figure 3 shown, the cross section of the guide wire contrast cavity 201 is circular, and the cross section of the filling cavity 202 is meniscus-shaped. The two ends of the filling cavity 202 are provided with sealing members 2021, and the two sealing members 2021 isolate the filling cavity 202 from the outside, so as to isolate blood when injecting into the body.

[0039] The balloon 3 is arranged on the catheter distal end 22, and the balloon 3 is provided with a balloon cavity 30, and the balloon cavity 30 is communicated with the filling cavity 202 and the balloon branch cavity 120, and the expansion and contraction of the balloon cavity 30 are independent of the guide wire contrast cavity 201, so that the blood flow can be maintained

[0040] As Figures 4-5As shown, the guidewire angiography cavity 201 includes a guidewire inlet 204 and a guidewire outlet 205.

[0041] like Figure 6 As shown, in order to further reduce the number of replacement steps, three contrast ports 203 are provided on the catheter 2. Each contrast port 203 is connected to the contrast chamber 201 of the guidewire. The contrast ports 203 are located between the balloon 3 and the catheter seat 1. The contrast ports 203 are 5-15cm away from the balloon, and 10cm in this invention.

[0042] A second through-hole 220 is provided on the filling lumen 202 of the distal end 22 of the catheter. The second through-hole 220 is located inside the balloon 3, and the balloon cavity 30 is connected to the filling lumen 202 through the second through-hole 220. A first through-hole 210 is provided on the filling lumen 202 of the proximal end 21 of the catheter, and the balloon branch lumen 120 is connected to the filling lumen 202 through the first through-hole 210. Through the first through-hole 210 and the second through-hole 220, the balloon cavity 30 and the balloon branch lumen 120 are kept in communication, but not connected to other cavities or blood in the body.

[0043] Instructions for use: Inject contrast agent through guidewire outlet 205. The contrast agent flows out through the three contrast holes 203 at the distal end 22 of the catheter via the guidewire contrast cavity 201, completing the contrast imaging. Then, inject contrast agent through balloon branch 12 of catheter seat 1. The contrast agent passes through the first through hole 210, enters the filling cavity 202, then through the second through hole 220 into the balloon cavity 30, and enters the balloon 3 through the distal filling hole 6. The balloon 3 gradually inflates under liquid pressure, expanding the lesion site.

[0044] In summary, this invention features multiple angiography ports on the guidewire angiography cavity 201 of the catheter 2 near the balloon, providing both angiography and traditional balloon dilation catheter functionality. This reduces the need for intraoperative catheter replacement, saving time and costs. The guidewire angiography cavity 201 combines angiography and guidewire functions, ensuring uninterrupted blood flow during balloon dilation, allowing for longer balloon apposition and better expansion of the lesion.

[0045] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0046] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the utility model concept, several deformations and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model should be subject to the appended claims.

Claims

1. A balloon dilatation catheter characterized by, The application relates to a catheter, which comprises a catheter seat (1) provided with a guide wire tube (11), a balloon branch tube (12) and a stress release tube (13), the guide wire tube (11) and the stress release tube (13) are provided with catheter cavities (10) in communication with each other, the balloon branch tube (12) is provided with a balloon branch cavity (120); a catheter (2) comprising a catheter proximal end (21) and a catheter distal end (22), the catheter proximal end (21) is clamped in the catheter cavity (10), the catheter (2) is provided with a guide wire radiography cavity (201) and a filling cavity (202); a balloon (3) arranged on the catheter distal end (22), the balloon (3) is provided with a balloon cavity (30), the balloon cavity (30) is communicated through the filling cavity (202) and the balloon branch cavity (120). The guide wire radiography cavity (201) comprises a guide wire inlet (204) and a guide wire outlet (205). Both ends of the filling cavity (202) are provided with sealing members (2021). A plurality of radiography holes (203) are formed on the catheter (2), each of the radiography holes (203) is communicated with the guide wire radiography cavity (201).

2. The balloon dilatation catheter of claim 1, wherein, The radiography holes (203) are located between the balloon (3) and the catheter seat (1), and the radiography holes (203) are 5-15 cm away from the balloon (3).

3. The balloon dilatation catheter of claim 1, wherein, Two glue injection holes (4) are arranged on the catheter seat (1), each of the glue injection holes (4) is filled with glue (5), and the glue (5) is located between the catheter seat (1) and the catheter (2).

4. The balloon dilation catheter of claim 1, wherein, A second through hole (220) is further arranged on the filling cavity (202) of the catheter distal end (22), the second through hole (220) is located in the balloon (3), and the balloon cavity (30) is communicated through the second through hole (220) and the filling cavity (202).

5. A balloon dilatation catheter according to claim 4, wherein, A first through hole (210) is further arranged on the filling cavity (202) of the catheter proximal end (21), and the balloon branch cavity (120) is communicated through the first through hole (210) and the filling cavity (202).

6. A balloon dilatation catheter according to claim 5, wherein, The cross section of the guide wire radiography cavity (201) is circular, and the cross section of the filling cavity (202) is meniscus-shaped.

7. A balloon dilatation catheter according to claim 6, wherein ​ 8. The balloon dilatation catheter of claim 7, wherein, ​ 9. The balloon dilation catheter of claim 1, wherein, ​

Images