Pressure-controllable multi-channel micro catheter device

Abstract

The utility model provides a pressure-controllable multichannel micro catheter device which comprises a catheter with two balloons, a guide cylinder is coaxially arranged in the middle of the catheter, a mounting gap is formed between the outer side of the guide cylinder and the inner wall of the catheter, and a second liquid outlet is formed in the side wall, between the two balloons, of the catheter. The lower ends of the guide pipe and the guide cylinder are connected to one end of a pressurizing handle, a spiral pressurizing groove is formed in the pressurizing handle, a guide-in cylinder is connected to the middle of the other end of the pressurizing handle, and a first liquid injection pipe is arranged on the side face of the guide-in cylinder and spirally installed in the spiral pressurizing groove. The liquid outlet end of the first liquid injection pipe penetrates through the spiral pressurizing groove and extends to the upper end of the guide cylinder to form a first liquid outlet, a second liquid injection pipe is arranged on the side face of the pressurizing handle, the second liquid injection pipe is spirally installed in the spiral pressurizing groove, and the liquid outlet end of the second liquid injection pipe penetrates through the spiral pressurizing groove and the installation gap to be connected to the second liquid outlet. The device is provided with a second liquid outlet connected with a second liquid injection pipe, so that normal seepage between the double balloons is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, is particularly used for TACE treatment, and specifically relates to a pressure-controllable multi-channel microcatheter device. Background Art

[0002] Hepatocellular carcinoma (HCC) ranks third among all malignant tumors. Surgery is the most direct and preferred treatment, but 70%-80% of patients are diagnosed in the late stages, missing the best opportunity for surgery. Transcatheter arterial chemoembolization (TACE), a non-surgical comprehensive treatment option, has gradually become an alternative treatment for patients in the middle and late stages, with significant efficacy and unanimous recognition by clinicians and researchers.

[0003] TACE involves killing tumor cells with chemotherapy drugs and then using embolic agents to block blood flow to the tumor, disrupting its blood supply and further causing tumor necrosis. This treatment method is relatively safe, minimally invasive, and has few toxic side effects, making it widely used clinically and an ideal treatment option for many HCC patients who are inoperable. Superselective embolization of the tumor's feeding arteries and the density of the embolization are the most important factors affecting TACE's effectiveness and complications.

[0004] At present, the existing embolization in clinical use has poor blood blocking effect. After a single or double balloon blocks the blood, the surgical fluid under the balloon has poor permeability, and the pressure during balloon blocking is uncontrollable. The infusion pressure of the surgical fluid is insufficient, which avoids the problem of difficulty in meeting the timely supply of fluid during chemotherapy and achieving the ideal treatment effect. Therefore, a controllable pressure multi-channel microcatheter device is needed. Utility Model Content

[0005] The present invention aims to solve the problems in the above-mentioned background technology, and provides a pressure-controllable multi-channel microcatheter device.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] The tube that pumps out the effect of the pump is that the end of described sliding panel withstands on the back of the end cap, and the tube that pumps out the effect of the pump is in the center of the sliding panel, and the tube that pumps out the effect of the pump is in the center of the sliding panel.

[0008] Preferably, an air tube is provided at the inner ring of the two balloons, and the two air tubes pass through the installation gap to the outside of the middle section of the catheter. Pressure gauges are installed on the outer ends of the two air tubes.

[0009] Preferably, both of the two balloons are annular balloons, the inner walls of the two balloons are embedded and mounted on the inner wall of the catheter through mounting plates, and the two balloons are expanded and contracted by inflating and deflating air through the trachea at the catheter.

[0010] Preferably, the introduction tube is threadedly mounted with a sealing cap at the guide wire insertion port, and the guide wire is inserted from a middle position of the sealing cap.

[0011] Preferably, the inner wall of the upper end of the conduit and the outer wall of the guide cylinder are threadedly installed, the lower end of the conduit is threadedly installed at the inner wall of the upper end of the booster handle, and the upper end of the inlet tube is threadedly installed at the inner wall of the lower end of the booster handle.

[0012] Preferably, the axis of the catheter, the axis of the guide tube, the axis of the booster handle and the axis of the introduction tube are all collinear.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The present invention provides a pressure boosting handle below the catheter. The first and second infusion tubes are installed in the spiral mounting groove of the pressure boosting handle with a threaded structure. The spiral structure increases the delivery pressure of the surgical fluid, improves the timely pressure supply of saline or surgical fluid during TACE treatment, and ensures the stability of the treatment. The second outlet of the second infusion tube is arranged between the two balloons to ensure the permeability of the position below the catheter.

[0015] 2. The utility model arranges two balloons into an annular structure and embeds them on the side wall of the catheter. They are connected through two trachea respectively, and a pressure gauge is installed on the trachea, which facilitates the observation of the required inflation pressure value when the two balloons are inflated, ensuring that the balloons are inflated to the right position and that problems such as over-inflation and damage to supporting blood vessels will not occur, thereby improving the treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0018] Figure 2 A cross-sectional view of an embodiment of the present utility model;

[0019] Figure 3 This is a cross-sectional view of the balloon in an embodiment of the present utility model;

[0020] The embodiment of the present utility model mainly includes the following element symbols:

[0021] Catheter-1, second liquid outlet-11, balloon-2, mounting plate-21, trachea-22, pressure gauge-23, guide tube-3, first liquid outlet-31, mounting gap-4, booster handle-5, spiral booster groove-51, second liquid injection tube-52, introduction tube-6, first liquid injection tube-61, sealing cap-62, guide wire-7. DETAILED DESCRIPTION

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] like Figure 1 and Figure 2As shown, a pressure-controllable multi-channel microcatheter device includes a catheter 1 with two balloons 2, a guide cylinder 3 is coaxially arranged in the middle of the catheter 1, and a mounting gap 4 is formed between the outer side of the guide cylinder 3 and the inner wall of the catheter 1. The catheter 1 is located between the two balloons 2 and has a second liquid outlet 11 on the side wall. The lower ends of the catheter 1 and the guide cylinder 3 are both connected to one end of the booster handle 5, and the booster handle 5 has a spiral booster groove 51. The other end of the booster handle 5 is connected to an introduction cylinder 6 in the middle, and the side of the introduction cylinder 6 is provided with a first injection port. Tube 61, the first injection tube 61 is spirally installed in the spiral boosting groove 51, the liquid outlet end of the first injection tube 61 passes through the spiral boosting groove 51 and extends to the upper end of the guide cylinder 3 to form a first liquid outlet 31, and a second injection tube 52 is provided on the side of the boosting handle 5, and the second injection tube 52 is spirally installed in the spiral boosting groove 51, and the liquid outlet end of the second injection tube 52 passes through the spiral boosting groove 51 and the installation gap 4 to be connected to the second liquid outlet 11, and the guide wire 7 passes through the lower end of the introduction tube 6 and the boosting groove to the upper end of the guide cylinder 3.

[0024] The utility model provides a booster handle 5 below the catheter 1, and installs the first injection tube 61 and the second injection tube 52 in the spiral mounting groove of the booster handle 5 with a threaded structure. The spiral structure increases the delivery pressure of the surgical fluid, improves the timely pressure supply of physiological saline or surgical fluid during TACE treatment, ensures the stability of the treatment, and the second liquid outlet 11 of the second infusion tube is set between the two balloons 2 to ensure the permeability of the position below the catheter 1.

[0025] An air tube 22 is provided at the inner circle of the two balloons 2. The two air tubes 22 pass through the installation gap 4 to the outside of the middle section of the catheter 1. A pressure gauge 23 is installed on the outer end of the two air tubes 22.

[0026] like Figure 3 As shown, the two balloons 2 are both annular balloons 2 , and the inner walls of the two balloons 2 are embedded and installed on the inner wall of the catheter 1 through the mounting piece 21 . The two balloons 2 are inflated and deflated through the trachea 22 on the catheter 1 to expand and contract.

[0027] The utility model arranges two balloons 2 into an annular structure and is embedded in the side wall of the catheter 1. The two balloons are connected by two trachea 22 respectively, and a pressure gauge 23 is installed on the trachea 22, so as to facilitate observation of the required inflation pressure value when the two balloons 2 are inflated, thereby ensuring that the balloons 2 are inflated to the right position and that problems such as damage to supporting blood vessels due to over-inflation will not occur, thereby improving the treatment effect.

[0028] The introduction tube 6 is threadedly mounted with a sealing cap 62 at the insertion port of the guide wire 7 , and the guide wire 7 is inserted from the middle position of the sealing cap 62 to ensure the airtightness inside the catheter 1 and prevent the problem of liquid seeping out of the catheter 1 .

[0029] The inner wall of the upper end of the catheter 1 and the outer wall of the guide tube 3 are threadedly installed, the lower end of the catheter 1 is threadedly installed on the inner wall of the upper end of the booster handle 5, and the upper end of the introduction tube is threadedly installed on the inner wall of the lower end of the booster handle 5. The threaded installation structure is convenient for disassembly and inspection, ensuring that the stability of the microcatheter device can be checked during treatment use.

[0030] The axis line of the catheter 1, the axis line of the guide tube 3, the axis line of the booster handle 5 and the axis line of the introduction tube 6 are all collinear, ensuring that the guide wire 7 can be used smoothly in the guide tube 3, the booster handle 5 and the introduction tube 6 without being affected by coaxiality and causing limitation, thereby improving the flexibility of the device.

[0031] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A pressure-controllable multi-channel microcatheter device, comprising a catheter with two balloons, characterized in that: A guide cylinder is coaxially arranged in the middle of the catheter, and an installation gap is formed between the outer side of the guide cylinder and the inner wall of the catheter. A second liquid outlet is provided on the side wall of the catheter between the two balloons. The lower ends of the catheter and the guide cylinder are both connected to one end of the boosting handle, and a spiral boosting groove is provided in the boosting handle. An introduction cylinder is connected in the middle of the other end of the boosting handle. A first injection tube is arranged on the side of the introduction tube, and the first injection tube is spirally installed in the spiral boosting groove. The liquid outlet end of the first injection tube passes through the spiral boosting groove and extends to the upper end of the guide cylinder to form a first liquid outlet. A second injection tube is arranged on the side of the boosting handle, and the second injection tube is spirally installed in the spiral boosting groove. The liquid outlet end of the second injection tube passes through the spiral boosting groove and the installation gap and is connected to the second liquid outlet. The guide wire passes through the lower end of the introduction tube and the boosting groove to the upper end of the guide cylinder.

2. The pressure-controllable multi-channel microcatheter device according to claim 1, characterized in that: The inner circles of the two balloons are both provided with trachea, and the two trachea are both passed through the installation gap to the outside of the middle section of the catheter. The two trachea are both provided with pressure gauges on the outer ends of the catheter.

3. The pressure-controllable multi-channel microcatheter device according to claim 2, characterized in that: The two balloons are both annular balloons, the inner walls of the two balloons are embedded and installed on the inner wall of the catheter through mounting plates, and the two balloons are expanded and contracted by inflating and deflating air through the trachea at the catheter.

4. The pressure-controllable multi-channel microcatheter device according to claim 3, characterized in that: The introduction tube is located at the guide wire insertion port and is threadedly mounted with a sealing cover, and the guide wire is passed through the middle position of the sealing cover.

5. The pressure-controllable multi-channel microcatheter device according to claim 4, characterized in that: The inner wall of the upper end of the conduit and the outer wall of the guide cylinder are threadedly installed, the lower end of the conduit is threadedly installed on the inner wall of the upper end of the booster handle, and the upper end of the introduction cylinder is threadedly installed on the inner wall of the lower end of the booster handle.

6. The pressure-controllable multi-channel microcatheter device according to claim 5, characterized in that: The axis center line of the catheter, the axis center line of the guide tube, the axis center line of the booster handle and the axis center line of the introduction tube are all collinear.

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