Minimally invasive balloon catheter capable of rapidly exhausting air for brain department

Abstract

The utility model relates to the technical field of medical instruments, and provides a quick exhaust minimally invasive balloon catheter for brain department, which comprises a catheter joint, a catheter and a balloon, the catheter comprises an inner tube and an outer tube, a liquid injection channel is arranged in the inner tube, and the inner tube and the outer tube are matched to form an exhaust channel. A main cavity channel communicated with the liquid injection channel and a side branch channel communicated with the exhaust channel are arranged in the catheter connector, the main cavity channel is fixedly connected with the inner tube through the inner tube connector, a liquid passing hole is formed in the position, corresponding to the outer tube structure, of the inner tube, and a balloon is connected to the end of the catheter. The end, away from the catheter connector, of the balloon is in sealed connection with the end of the inner tube through an inner tube sealing cap, and the end, close to the catheter connector, of the balloon is in sealed connection with the end of the outer tube through a supporting ring. Gas in the balloon catheter is completely exhausted through cooperation of the liquid injection channel and the exhaust channel, the liquid passing hole is formed in the position, corresponding to the supporting ring structure, of the inner tube, the strength of the front end tube body is enhanced, and the developing effect and the pressing effect are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a minimally invasive balloon catheter for rapid exhaust of brain medicine. Background Art

[0002] Balloon compression is a common interventional procedure that is often used to relieve neuralgia that cannot be controlled by other technical means. During balloon compression surgery, the balloon is usually delivered to the designated location through a puncture needle, and then contrast agent is slowly injected to fill the balloon. The expanded balloon is used to compress the nerves in the designated area of ​​the patient. The operation is simple to operate, with small surgical incisions, no pain or discomfort for the patient, a short operation time, and a quick recovery. It has been widely used in clinical treatment.

[0003] When performing balloon compression therapy, the success of the operation is mainly determined by the shape of the angiography during balloon expansion. In the prior art, balloon catheters are usually single-tube or single-tube dual-lumen structures. When using them, clinicians need to remove the air in the balloon catheter and then inject contrast agents to make the balloon shape clearer. Since the single-tube structure cannot completely remove the gas in the balloon catheter, the gas-doped contrast agent solution enters the balloon together, which will cause residual gas in the balloon, affecting the development effect and compression effect of the balloon during expansion. When using a single-tube dual-lumen structure, the front end is a reducer, which is difficult to mold and process, and is prone to cross-lumen. In addition, since the contrast agent has a certain viscosity, the injection resistance is relatively large during use.

[0004] In addition, existing balloon catheters usually have a liquid hole below the balloon at the patient end, which weakens the strength of the front section of the tube. When the balloon is inflated, the inner tube is pulled by the balloon, which can easily cause deformation or even breakage of the tube at the liquid hole, posing a safety hazard. When fixing the inner catheter, the existing technology requires glue injection inside the joint, which can easily form bubbles and affect the firmness of the balloon catheter. When performing exhaust sealing, an external stop clamp is usually required, there are many structural components, and the assembly process is relatively complicated. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a minimally invasive balloon catheter for brain surgery with rapid exhaust to address the deficiencies of the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A minimally invasive balloon catheter for rapid exhaust in cerebrovascular surgery comprises a catheter joint, a catheter and a balloon, characterized in that the catheter comprises an inner tube and an outer tube, the inner tube is provided with an injection channel, the inner tube and the outer tube cooperate to form an exhaust channel, the catheter joint is provided with a main cavity channel connected to the injection channel and a side branch channel connected to the exhaust channel, the main cavity channel is fixedly connected to the inner tube through the inner tube joint, the inner tube is provided with a liquid hole at a position corresponding to the outer tube structure, the end of the catheter is connected to a balloon, the end of the balloon away from the catheter joint is sealed and connected to the end of the inner tube through an inner tube sealing cap, and the end of the balloon close to the catheter joint is sealed and connected to the end of the outer tube through a support ring.

[0008] As a further improvement of the utility model, the liquid passage hole is opened at a position corresponding to the support ring structure on the inner tube.

[0009] As a further improvement of the utility model, a glue storage groove is provided on the inner pipe joint, and a glue injection hole matching with the glue storage groove is provided on the catheter joint.

[0010] As a further improvement of the utility model, the outer end of the side branch channel is threadedly connected with a one-way exhaust valve.

[0011] As a further improvement of the utility model, the one-way exhaust valve is provided with an exhaust section and a sealing section, and the side branch channel is provided with a joint sealing section corresponding to the sealing section structure.

[0012] As a further improvement of the utility model, a protrusion is provided on the outside of the side branch channel, and a buckle is provided on the one-way exhaust valve. The one-way exhaust valve is fixed to the side branch channel by the cooperation and limitation of the buckle and the protrusion.

[0013] As a further improvement of the utility model, an outer tube glue storage tank is provided at the end of the catheter joint.

[0014] As a further improvement of the utility model, developing rings are provided at both ends of the balloon.

[0015] As a further improvement of the utility model, the end of the catheter joint is connected with a catheter sheath.

[0016] The beneficial effects of the utility model are:

[0017] 1. The utility model provides a minimally invasive balloon catheter for cerebrovascular surgery with rapid exhaust. It uses a catheter structure in which an inner tube and an outer tube cooperate with each other. The gas in the balloon catheter is completely exhausted through the injection channel in the inner tube and the exhaust channel formed by the inner tube and the outer tube, thereby ensuring the visualization effect and compression effect of the balloon during the expansion process.

[0018] 2. The utility model adopts a support ring structure to connect the balloon and the outer tube, and opens the liquid hole at the corresponding position of the support ring structure on the inner tube, thereby ensuring the tube strength at the front end of the balloon catheter. When the inner tube is deformed, the outer tube and the support ring can provide a certain degree of anti-deformation support, and the tube body is not easy to break at the liquid hole, thereby ensuring the safety of the balloon catheter.

[0019] 3. The utility model uses an inner tube joint component, which can complete the connection and fixation of the inner tube outside the catheter joint, making the processing operation more convenient and the fixing effect more firm. A glue storage groove is opened in the middle of the catheter joint, and the inner tube joint can be sealed and fixed through the glue injection hole structure on the catheter joint.

[0020] 4. The utility model adopts an exhaust valve with an exhaust section and a sealing section structure. After the air is exhausted, the side branch channel can be sealed by screwing the exhaust valve until the sealing section cooperates with the sealing section structure of the joint in the side branch channel. The sealing structure is simple and the operation is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Attached Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0023] Attached Figure 2 It is an exploded view of the overall structure of the utility model.

[0024] Attached Figure 3 It is a cross-sectional view of the overall structure of the utility model in the exhaust state.

[0025] Attached Figure 4 It is a cross-sectional view of the overall structure of the utility model in a sealed state.

[0026] Attached Figure 5 It is a partial structural cross-sectional view of the catheter joint of the utility model.

[0027] Attached Figure 6 It is a partial structural cross-sectional view of the one-way exhaust valve of the utility model.

[0028] Attached Figure 7 It is a structural cross-sectional view of the combined state of the conduit connector and the one-way exhaust valve of the utility model.

[0029] Attached Figure 8 It is a cross-sectional view of the local structure of the end portion of the balloon catheter of the utility model.

[0030] In the figure: 1 is a catheter joint, 101 is a main cavity channel, 102 is a side branch channel, 103 is a glue injection hole, 104 is a joint sealing section, 105 is a protrusion, 106 is an outer tube glue storage tank, 2 is an inner tube, 201 is a liquid hole, 3 is an outer tube, 4 is a balloon, 5 is an inner tube joint, 501 is a glue storage tank, 6 is an inner tube sealing cap, 7 is a support ring, 8 is a one-way exhaust valve, 801 is a sealing section, 802 is an exhaust section, 803 is a buckle, 9 is a developing ring, and 10 is a catheter sheath. Implementation

[0031] The technical solutions in the embodiments of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] like Figure 1 As shown, a minimally invasive balloon catheter for rapid exhaust of cerebrovascular diseases comprises a catheter joint 1, a catheter and a balloon 4, characterized in that the catheter comprises an inner tube 2 and an outer tube 3, the inner tube 2 is provided with an injection channel, the inner tube 2 and the outer tube 3 cooperate to form an exhaust channel, the catheter joint 1 is provided with a main cavity channel 101 connected to the injection channel and a side branch channel 102 connected to the exhaust channel, the main cavity channel 101 is fixedly connected to the inner tube 2 through an inner tube joint 5, a plurality of liquid holes 201 are opened on the inner tube 2 at positions corresponding to the structure of the outer tube 3 to enhance the strength of the front end of the tube body, the end of the catheter is connected to the balloon 4, the end of the balloon 4 away from the catheter joint 1 is sealed and connected to the end of the inner tube 2 through an inner tube sealing cap 6, and the end of the balloon 4 close to the catheter joint 1 is sealed and connected to the end of the outer tube 3 through a support ring 7.

[0033] In a specific embodiment, further, the liquid passage hole 201 is opened at a position corresponding to the support ring 7 structure on the inner tube 2 .

[0034] In a specific embodiment, further, a glue storage groove 501 is provided on the inner tube joint 5, and a glue injection hole 103 matching with the glue storage groove 501 is provided on the catheter joint 1, thereby completing the fixation of the inner tube joint 5 in the main cavity channel 101.

[0035] In a specific embodiment, further, the outer end of the side branch channel 102 is threadedly connected with a one-way exhaust valve 8 .

[0036] In a specific embodiment, further, a sealing section 801 and an exhaust section 802 are provided on the one-way exhaust valve 8, and a joint sealing section 104 corresponding to the structure of the sealing section 801 is provided in the side branch channel 102, and the diameter of the exhaust section 802 is smaller than the inner diameter of the side branch channel 102 to facilitate the exhaust of gas, and the sealing section 801 and the joint sealing section 104 have the same diameter and structure, so as to cooperate to complete the sealing of the side branch channel 102 after the exhaust is completed.

[0037] In a specific embodiment, further, a protrusion 105 is provided on the outside of the side branch channel 102, and a buckle 803 is provided on the one-way exhaust valve 8. The one-way exhaust valve 8 is fixed to the side branch channel 102 by the cooperation of the buckle 803 and the protrusion 105.

[0038] In a specific embodiment, further, the end of the catheter joint 1 is provided with an outer tube glue storage tank 106 for glue injection and fixation of the outer tube 3.

[0039] In a specific embodiment, further, developing rings 9 are provided at both ends of the balloon 4 .

[0040] In a specific embodiment, further, the end of the catheter connector 1 is connected to a catheter sheath 10 for protecting the root of the catheter body to prevent the root of the catheter from bending.

[0041] The specific working process is as follows: the contrast agent is injected from the main cavity channel 101, and the contrast agent enters the injection channel in the inner tube 2 through the inner tube joint 5. At this time, the air in the injection channel will go forward along the tube body through the liquid hole 201 into the balloon 4. Since the front end of the inner tube 2 is sealed by the inner tube sealing cap 6, the air in the balloon 4 can only enter the side branch channel 102 through the exhaust channel, and be discharged through the gap between the exhaust section 801 of the one-way exhaust valve 8 and the side branch channel 102. When liquid flows out from the end of the one-way exhaust valve 8, it means that the gas in the injection channel, the exhaust channel and the balloon 4 has been completely discharged. At this time, the one-way exhaust valve 8 is screwed to make the sealing section 801 contact with the joint sealing section 104 on the side branch channel 102, and the side branch channel 102 and the exhaust channel connected thereto are closed; since the exhaust channel connected to the balloon 4 has been closed, with the continuous injection of contrast agent in the injection channel, the balloon 4 is gradually filled with the injected contrast agent, thereby realizing the function of compressing the nerves by the balloon 4 and achieving the therapeutic effect.

[0042] It can be understood that the above specific description of the utility model is only used to illustrate the utility model and is not limited to the technical solution described in the embodiments of the utility model. Ordinary technicians in the field should understand that the utility model can still be modified or replaced by equivalents to achieve the same technical effect; as long as the use requirements are met, they are within the protection scope of the utility model.

[0043] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A minimally invasive balloon catheter for rapid venting of brain tissue, comprising a catheter connector (1), a catheter and a balloon (4), characterized in that: The catheter comprises an inner tube (2) and an outer tube (3), wherein the inner tube (2) is provided with an injection channel, and the inner tube (2) and the outer tube (3) cooperate to form an exhaust channel, wherein the catheter joint (1) is provided with a main cavity channel (101) connected to the injection channel and a side branch channel (102) connected to the exhaust channel, wherein the main cavity channel (101) is fixedly connected to the inner tube (2) via an inner tube joint (5), and a liquid hole (201) is provided on the inner tube (2) at a position corresponding to the structure of the outer tube (3), and a balloon (4) is connected to the end of the catheter, and the end of the balloon (4) away from the catheter joint (1) is sealed to the end of the inner tube (2) via an inner tube sealing cap (6), and the end of the balloon (4) close to the catheter joint (1) is sealed to the end of the outer tube (3) via a support ring (7).

2. The minimally invasive balloon catheter for rapid venting of brain medicine according to claim 1, characterized in that: The liquid passage hole (201) is provided at a position corresponding to the support ring (7) structure on the inner tube (2).

3. The minimally invasive balloon catheter for rapid venting of brain medicine according to claim 1, characterized in that: The inner pipe joint (5) is provided with a glue storage groove (501), and the catheter joint (1) is provided with a glue injection hole (103) that matches the glue storage groove (501).

4. The minimally invasive balloon catheter for rapid venting of brain medicine according to claim 1, characterized in that: The outer end of the side branch channel (102) is threadedly connected with a one-way exhaust valve (8).

5. The minimally invasive balloon catheter for rapid venting of brain medicine according to claim 4, characterized in that: The one-way exhaust valve (8) is provided with a sealing section (801) and an exhaust section (802), and the side branch channel (102) is provided with a joint sealing section (104) having a structure corresponding to the sealing section (801).

6. The minimally invasive balloon catheter for rapid venting of brain medicine according to claim 4, characterized in that: A protrusion (105) is provided on the outside of the side branch channel (102), a buckle (803) is provided on the one-way exhaust valve (8), and the one-way exhaust valve (8) is fixed to the side branch channel (102) by the cooperation and limitation of the buckle (803) and the protrusion (105).

7. The minimally invasive balloon catheter for rapid venting of brain medicine according to claim 1, characterized in that: An outer tube glue storage tank (106) is provided at the end of the catheter joint (1).

8. The minimally invasive balloon catheter for rapid venting of brain surgery according to claim 1, characterized in that: Both ends of the balloon (4) are provided with developing rings (9).

9. The minimally invasive balloon catheter for rapid venting of brain surgery according to claim 1, characterized in that: The end of the catheter connector (1) is connected to a catheter sheath (10).

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