Double-balloon micro catheter

Abstract

The utility model discloses a double sacculus microcatheter, including first inner tube, outer catheter main part, main sacculus, vice sacculus, microcatheter head and second inner tube, the end of outer catheter main part with main sacculus end part second pipe joint is connected, main sacculus is connected with microcatheter head through connecting pipe, said microcatheter head is equipped with vice sacculus, said vice sacculus is equipped with vice sacculus, said vice sacculus is equipped with vice sacculus, said vice sacculus is equipped with vice sacculus. A camera is arranged at the end of the micro catheter head, a first inner tube is arranged in the outer catheter body, and a second inner tube is arranged in the first inner tube. The first inner tube is arranged in the outer catheter body, the second inner tube is arranged in the first inner tube, the exhaust hole tube is arranged at the end of the second inner tube and arranged in the main balloon, the adjusting head is arranged at the end of the first inner tube, and the first inner tube can be controlled to rotate through the adjusting head. And a second exhaust hole is formed in the exhaust hole pipe through a first exhaust hole in the sealing sleeve at the end part of the first inner pipe.

Description

Technical Field

[0001] The utility model relates to the field related to aluminum profile straightening, in particular to a double-balloon microcatheter. Background Art

[0002] A microcatheter is a medical device, usually made of plastic or metal, with a very small diameter, usually only a few millimeters. Microcatheters are mainly used for medical examinations and treatments, and can be used for navigation, sampling, drug injection, guiding implants and other operations during surgery. A microcatheter usually consists of three parts: the catheter body, the catheter head and the connector. The catheter body is the longest part, usually made of soft material that can bend and turn inside the human body. The catheter head is the front end of the catheter, usually in different shapes and sizes to suit different operational needs. The connector is the part that connects the catheter to other instruments or devices, usually with a specific interface and connection method;

[0003] For example, the authorized patent with publication number CN215231448U (double-balloon microcatheter): includes a microcatheter body and a guide wire, the microcatheter body is provided with a parallel guidewire channel and a balloon channel, the rear end opening of the guidewire channel is located at the rear end face of the microcatheter body, and the front end of the guidewire channel is closed; the front end of the microcatheter body is provided with a first balloon and a second balloon connected to the front end opening of the balloon channel; in addition, it also includes a side hole channel arranged in the microcatheter body and parallel to the guidewire channel, a side hole is opened on the side wall of the microcatheter body between the first balloon and the second balloon, and the side hole serves as the front end opening of the side hole channel. The utility model can achieve targeted drug delivery in the tumor area, making the treatment more thorough; it can effectively avoid drug reflux or non-target vascular embolism, reduce liver function damage, and make the treatment safer; it can greatly reduce the excessively long intubation time of existing microcatheters due to intubation difficulties. It can be flexibly applied to a variety of situations;

[0004] The double balloons of the above-mentioned prior art cannot be used in a staggered manner, making it impossible to switch between single and double balloons, and the versatility is insufficient. In addition, the assembly of the balloon and the catheter is not convenient enough, and the inflation cannot be manually opened and closed, and the use is not flexible enough. Utility Model Content

[0005] The purpose of the present utility model is to provide a double-balloon microcatheter to solve the problems proposed in the above-mentioned background technology that the double balloons cannot be used in a staggered manner, making it impossible to switch between single and double balloons, the lack of versatility, the inconvenience of assembling the balloon and the catheter, the inability to manually open and close the inflation, and the lack of flexibility in use.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a double-balloon microcatheter, comprising a first inner tube, an outer catheter body, a main balloon, a secondary balloon, a microcatheter head and a second inner tube, wherein the end of the outer catheter body is connected to the second connecting head at the end of the main balloon, the main balloon is connected to the microcatheter head through a connecting tube, the secondary balloon is provided on the microcatheter head, the end of the microcatheter head is provided with a camera, the first inner tube is provided inside the outer catheter body, and the second inner tube is provided inside the first inner tube.

[0007] In a further embodiment, a gas injection head is provided at one end of the second inner tube, and an exhaust hole tube is provided at the other end of the second inner tube, and the exhaust hole tube is located inside the main balloon.

[0008] In a further embodiment, an adjusting head is provided at one end of the first inner tube, a sealing sleeve is provided at the other end of the first inner tube, and a first exhaust hole is provided on the outer side of the sealing sleeve.

[0009] In a further embodiment, a second exhaust hole is provided on the outer side of the exhaust hole tube, and the second exhaust hole is provided corresponding to the first exhaust hole.

[0010] In a further embodiment, both ends of the auxiliary balloon are provided with a first connecting head, and the first connecting head is embedded and fixed with the microcatheter head.

[0011] In a further embodiment, the first inner tube is rotatably connected to the outer conduit body, and the first inner tube is tightly fitted to the exhaust hole tube through a sealing sleeve.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The outer catheter body of the utility model is provided with a first inner tube, a second inner tube is provided inside the first inner tube, and an exhaust hole tube is provided at the end of the second inner tube. The exhaust hole tube is provided inside the main balloon, and an adjusting head is provided at the end of the first inner tube. The first inner tube can be rotationally controlled by the adjusting head. A second exhaust hole is provided on the exhaust hole tube through the first exhaust hole on the sealing sleeve at the end of the first inner tube. The first exhaust hole and the second exhaust hole are staggered with each other, and the second inner tube is rotated manually to control the opening and closing of the exhaust hole tube, thereby facilitating exhaust.

[0014] The utility model is provided with a main balloon and a secondary balloon, and exhaust control is conveniently performed through the double balloons. Second connecting heads are provided at both ends of the main balloon, and first connecting heads are provided at both ends of the secondary balloon. The second connecting heads and the first connecting heads facilitate the connection between the outer catheter body and the microcatheter head, and the exhaust hole tube that can be opened and closed and controlled makes it possible to switch the expansion control between the main balloon and the secondary balloon, which is more flexible to use and improves versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of a double-balloon microcatheter of the present invention;

[0016] Figure 2 This is a schematic structural diagram of the main balloon of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the auxiliary balloon of the utility model;

[0018] Figure 4 This is a cross-sectional view of the exhaust hole tube and the first inner tube of the utility model;

[0019] Figure 5 This is a structural diagram of part A of the utility model.

[0020] In the figure: 1. Gas injection head; 2. Adjustment head; 3. First inner tube; 4. Outer catheter body; 5. Main balloon; 6. Connecting tube; 7. Secondary balloon; 8. Microcatheter head; 9. First connecting head; 10. Camera; 11. Second connecting head; 12. Second inner tube; 13. Exhaust hole tube; 14. First exhaust hole; 15. Second exhaust hole. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] See also Figure 1-5 The utility model provides an embodiment: a double-balloon microcatheter, comprising a first inner tube 3, an outer catheter body 4, a main balloon 5, a secondary balloon 7, a microcatheter head 8 and a second inner tube 12, the end of the outer catheter body 4 is connected to the second connecting head 11 at the end of the main balloon 5, the main balloon 5 is connected to the microcatheter head 8 through a connecting tube 6, the microcatheter head 8 is provided with a secondary balloon 7, the end of the microcatheter head 8 is provided with a camera 10, the interior of the outer catheter body 4 is provided with a first inner tube 3, the first inner tube 3 is rotatably connected to the outer catheter body 4, the first inner tube 3 is rotatably connected to the outer catheter body 4, and the first inner tube 3 is rotatably connected to the outer catheter body 4. The inner tube 3 is tightly fitted with the exhaust hole tube 13 through a sealing sleeve, and a second inner tube 12 is provided inside the first inner tube 3; the outer catheter body 4 is used to facilitate hand-held guidance control, and the second connecting head 11 is used to facilitate the installation of the main balloon 5. The main balloon 5 is used to support the blood vessel, the microcatheter head 8 is used to guide the catheter into the blood vessel, and the camera 10 is used for visual assistance. The auxiliary balloon 7 is used to support the internal expansion of the blood vessel, the first inner tube 3 is used to limit the second inner tube 12, and the second inner tube 12 is used to divert the flow.

[0023] One end of the second inner tube 12 is provided with a gas injection head 1, and the other end of the second inner tube 12 is provided with an exhaust hole tube 13, and the exhaust hole tube 13 is located inside the main balloon 5. The gas injection head 1 is used to conveniently inject gas into the second inner tube 12, and the exhaust hole tube 13 is used to inject gas into the main balloon 5; one end of the first inner tube 3 is provided with an adjusting head 2, and the other end of the first inner tube 3 is provided with a sealing sleeve, and the outside of the sealing sleeve is provided with a first exhaust hole 14, and the adjusting head 2 is used to manually rotate the first inner tube 3, and control the sealing sleeve to seal the exhaust hole tube 13; the outside of the exhaust hole tube 13 is provided with a second exhaust hole 15, and the second exhaust hole 15 is arranged corresponding to the first exhaust hole 14, and the mutual staggering of the second exhaust hole 15 and the first exhaust hole 14 facilitates the opening and closing control of the exhaust.

[0024] Both ends of the auxiliary balloon 7 are provided with a first connecting head 9, and the first connecting head 9 and the microcatheter head 8 are embedded and fixed, so that the auxiliary balloon 7 and the microcatheter head 8 can be easily assembled through the first connecting head 9.

[0025] Working principle: When in use, the two ends of the main balloon 5 are connected to the end of the outer catheter body 4 through the second connecting head 11, and the main balloon 5 can be connected to the microcatheter head 8 through the connecting tube 6, so that the exhaust hole tube 13 is arranged in the main balloon 5, and the first inner tube 3 is manually controlled to rotate by the adjusting head 2, so that the first inner tube 3 drives the sealing sleeve at its end to rotate, so that the first exhaust hole 14 on it and the second exhaust hole 15 on the exhaust hole tube 13 are staggered and controlled with each other, and gas is injected into the second inner tube 12 through the gas injection head 1, and the gas is discharged into the exhaust hole tube 13 through the second inner tube 12, and the gas is discharged into the main balloon 5 through the exhaust hole tube 13 to be inflated. If the exhaust hole tube 13 is closed, the gas will be injected into the auxiliary balloon 7 from the microcatheter head 8 through the connecting tube 6, so that the auxiliary balloon 7 can be inflated and controlled. The camera 10 is used to take pictures and observe the route of catheter introduction, which is convenient for operation.

[0026] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A double-balloon microcatheter, comprising a first inner tube (3), an outer catheter body (4), a main balloon (5), a secondary balloon (7), a microcatheter head (8) and a second inner tube (12), characterized in that: The end of the outer catheter body (4) is connected to the second connecting head (11) at the end of the main balloon (5); the main balloon (5) is connected to the microcatheter head (8) via a connecting tube (6); the microcatheter head (8) is provided with a secondary balloon (7); the end of the microcatheter head (8) is provided with a camera (10); the interior of the outer catheter body (4) is provided with a first inner tube (3); the interior of the first inner tube (3) is provided with a second inner tube (12).

2. A double-balloon microcatheter according to claim 1, characterized in that: One end of the second inner tube (12) is provided with a gas injection head (1), and the other end of the second inner tube (12) is provided with an exhaust hole tube (13), and the exhaust hole tube (13) is located inside the main balloon (5).

3. The double-balloon microcatheter according to claim 1, characterized in that: One end of the first inner tube (3) is provided with an adjusting head (2), and the other end of the first inner tube (3) is provided with a sealing sleeve, and the outer side of the sealing sleeve is provided with a first exhaust hole (14).

4. The double-balloon microcatheter according to claim 2, characterized in that: A second exhaust hole (15) is provided on the outer side of the exhaust hole tube (13), and the second exhaust hole (15) is arranged corresponding to the first exhaust hole (14).

5. The double-balloon microcatheter according to claim 1, characterized in that: Both ends of the auxiliary balloon (7) are provided with a first connecting head (9), and the first connecting head (9) and the microcatheter head (8) are embedded and fixed.

6. The double-balloon microcatheter according to claim 1, characterized in that: The first inner tube (3) is rotatably connected to the outer conduit body (4), and the first inner tube (3) is tightly fitted to the exhaust hole tube (13) via a sealing sleeve.

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