A balloon compression device for trigeminal neuralgia

Abstract

This utility model discloses a balloon compression device for trigeminal neuralgia, comprising: a three-way connector, a one-way valve, and a double-lumen balloon catheter. The device involves introducing liquid through the inlet of the three-way connector, which then flows into the outer tube of the double-lumen balloon catheter. From there, the liquid flows through a drainage port into the inner tube, then through the one-way valve, and finally out through the outlet. During this process, the liquid flows unidirectionally along this predetermined path, eliminating the need for repeated disassembly of the syringe. Furthermore, a single injection removes all air from the double-lumen balloon catheter, avoiding repeated injections and air removal, thus reducing surgical procedures and time, and alleviating the burden on the physician.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a balloon compression device for trigeminal neuralgia. Background Technology

[0002] Balloon compression of the trigeminal ganglion is a minimally invasive interventional procedure and one of the preferred treatment methods for trigeminal neuralgia worldwide, primarily used to treat refractory trigeminal neuralgia. Its principle is to mechanically compress the trigeminal ganglion with a balloon, blocking the transmission of abnormal pain signals, thereby relieving pain. This procedure has advantages such as minimal trauma, short procedure time, relatively low risk, high success rate, and low recurrence rate.

[0003] The procedure for balloon compression of the trigeminal ganglion involves a balloon catheter passing through the foramen ovale to McBurney's capsule, followed by balloon inflation to adequately compress the trigeminal ganglion. Before use, the balloon catheter must be deflated to remove air from the balloon to avoid affecting inflation and imaging, thus impacting the treatment outcome.

[0004] However, existing balloon catheters have only one lumen, requiring repeated injections of saline solution to completely remove the gas from the balloon catheter. This repeated injection and emptying of saline solution increases the overall procedure time and is not conducive to the rapid progress of the procedure. Therefore, improvements are urgently needed. Utility Model Content

[0005] The main purpose of this invention is to propose a balloon compression device for trigeminal neuralgia, which solves the problem of repeatedly injecting and emptying saline solution into the balloon catheter when using balloon compression surgery of the trigeminal ganglion in related technologies.

[0006] To achieve the above objectives, this utility model proposes a trigeminal neuralgia balloon compression device, comprising:

[0007] A three-way connector, the three-way connector having an inner cavity and an inlet, an outlet and a transmission port communicating with the inner cavity;

[0008] A one-way valve can be installed at the liquid outlet;

[0009] A dual-lumen balloon catheter, wherein the proximal end of the dual-lumen balloon catheter is connected to the transmission port, and the distal end is provided with a balloon. The dual-lumen balloon catheter has an inner tube and an outer tube, the inner tube being located inside the outer tube, forming an external cavity between the outer tube and the inner tube, and the inner tube having an internal cavity. The balloon is sleeved around the inner tube and the outer tube. The proximal end of the outer tube is connected to the transmission port, and the distal end of the outer tube is connected to the proximal end of the balloon. The proximal end of the inner tube is connected to the one-way valve, and the distal end of the inner tube is connected to the distal end of the balloon. A through-hole is provided in the inner tube located inside the balloon.

[0010] In some embodiments, the dual-lumen balloon catheter further includes a radiopaque ring, which is fitted onto the connection between the outer tube and the balloon.

[0011] In some embodiments, the dual-lumen balloon catheter further includes a plug and a metal wire, the proximal end of the plug being inserted into the distal end of the inner tube and sealing the inner tube, the metal wire being located inside the inner tube, the distal end of the metal wire being connected to the proximal end of the plug, and the proximal end of the metal wire being connected to the tee connector.

[0012] In some embodiments, the distal end of the plug is provided in a conical shape.

[0013] In some embodiments, the plug is made of stainless steel.

[0014] In some embodiments, the liquid outlet and the transmission port are located on the same horizontal line and are arranged opposite to each other.

[0015] In some embodiments, the inlet is located on the periphery of the outlet and the transmission port at the same horizontal level.

[0016] In some embodiments, a switching valve is also included, which is detachably mounted on the liquid inlet.

[0017] In some embodiments, the outlet is a standard Luer port, and the one-way valve is connected to the inlet via the Luer port.

[0018] In some embodiments, an inner core structure is also included, the inner core structure comprising a cap connector and a metal inner core, the cap connector being detachably connected to the liquid outlet, and the metal inner core being arranged in a strip shape and located inside the inner tube.

[0019] The beneficial effects of this utility model's technical solution are as follows:

[0020] This utility model's trigeminal neuralgia balloon compression device introduces liquid through the inlet of a three-way connector. The liquid flows through the inlet to the outer tube of a double-lumen balloon catheter, then from the outer tube through a drainage port to the inner tube, and finally from the inner tube to a one-way valve, exiting through the outlet. During this process, the liquid flows unidirectionally along this preset path, eliminating the need for repeated disassembly of the syringe. Furthermore, a single injection of liquid can expel the air from the double-lumen balloon catheter, avoiding repeated injections and air expulsion, thereby reducing surgical procedures and time, and alleviating the burden on physicians. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the trigeminal neuralgia balloon compression device according to an embodiment of the present invention;

[0022] Figure 2 This is a cross-sectional view of the trigeminal neuralgia balloon compression device according to an embodiment of the present invention;

[0023] Figure 3 for Figure 2 A magnified view of part A in the middle;

[0024] Figure 4 for Figure 2 A magnified view of part B in the middle;

[0025] Figure 5 This is a schematic diagram of the inner core structure of the trigeminal neuralgia balloon compression device according to an embodiment of the present invention.

[0026] Explanation of icon numbers:

[0027] 100. Three-way connector; 110. Inner cavity; 120. Inlet; 130. Outlet; 140. Transfer port; 200. Switch valve; 300. Check valve; 400. Double-lumen balloon catheter; 410. Inner tube; 411. Vent hole; 420. Outer tube; 430. Balloon; 440. Imaging marker ring; 450. Plug; 460. Metal wire; 500. Inner core structure; 510. Cap connector; 520. Metal inner core. Detailed Implementation

[0028] The solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model. In addition, the descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0029] To address the technical deficiencies in related technologies, this utility model provides a trigeminal neuralgia balloon compression device. Please refer to [link / reference]. Figures 1 to 4 The trigeminal neuralgia balloon compression device includes: a three-way connector 100, a one-way valve 300, and a double-lumen balloon catheter 400. The three-way connector 100 has an inner lumen 110 and a liquid inlet 120, a liquid outlet 130, and a transmission port 140 connected to the inner lumen 110. The three-way connector 100 forms a multi-channel fluid hub to realize the directional distribution and recovery of liquid.

[0030] Specifically, a one-way valve 300 can be installed at the outlet 130; furthermore, the trigeminal neuralgia balloon compression device also includes a switching valve 200. The switching valve 200 is installed at the inlet 120 and can control the start and stop of liquid injection to prevent leakage during non-operation periods, while the one-way valve 300 only allows liquid to flow out unidirectionally from the outlet 130, which can prevent backflow contamination.

[0031] Furthermore, the proximal end of the dual-lumen balloon catheter 400 is connected to the transmission port 140, and the distal end of the dual-lumen balloon catheter 400 is provided with a balloon 430. The dual-lumen balloon catheter 400 has an inner tube 410 and an outer tube 420. The inner tube 410 passes through the outer tube 420, forming an external cavity between the outer tube 420 and the inner tube 410. The inner tube 410 has an internal cavity. The balloon 430 is sleeved around the inner tube 410 and the outer tube 420. The proximal end of the outer tube 420 is connected to the transmission port 140, and the distal end of the outer tube 420 is connected to the proximal end of the balloon 430. The proximal end of the inner tube 410 is connected to the one-way valve 300, and the distal end of the inner tube 410 is connected to the distal end of the balloon 430. An exhaust port 411 is provided in the inner tube 410, which is located inside the balloon 430, and communicates with the inner tube 410. The fluid outlet 130 can be closed, or the one-way valve 300 can be closed.

[0032] With this configuration, the outer tube 420, inner tube 410, balloon 430 of the dual-lumen balloon catheter 400, and the inner cavity 110, inlet 120, and outlet 130 of the three-way connector 100 form a one-way closed-loop route. That is, after the switch valve 200 is opened, liquid can be introduced from the inlet 120 of the three-way connector 100 into the outer cavity of the outer tube 420 of the dual-lumen balloon catheter 400, then from the outer cavity through the vent 411 into the inner cavity of the inner tube 410, and finally from the inner cavity into the one-way valve 300, and then out from the outlet 130, thus expelling the gas in the dual-lumen balloon catheter 400 in one go, eliminating the need for repeated suction and venting operations required with traditional single-lumen catheters. After venting, the outlet 130 or the one-way valve 300 can be closed using a plug 450 or a cap (or the valve can be closed altogether), and liquid can then be introduced to inflate the balloon 430.

[0033] It should be noted that both the outer tube 420 and the inner tube 410 can be made of nylon. Nylon's good flexibility allows it to support the catheter as it smoothly passes through the foramen ovale of the skull, preventing collapse or twisting during delivery and ensuring the balloon 430 accurately reaches the Bursal State region. The balloon 430 is made of an elastic material, such as polyethylene terephthalate (PET), nylon 12, or thermoplastic polyurethane (TPU). The specific material used for the balloon 430 is not specifically limited here.

[0034] Through the above technical solution, the trigeminal neuralgia balloon compression device introduces liquid through its switching valve 200. The liquid is introduced into the outer tube 420 of the double-lumen balloon catheter 400 through the inlet 120 of the three-way connector 100, and then from the outer tube 420 through the drainage port into the inner tube 410. From the inner tube 410, it flows into the one-way valve 300 and out from the outlet 130. In this process, the synergistic action of the switching valve 200 and the one-way valve 300 ensures that the liquid flows unidirectionally along the preset path. There is no need to repeatedly disassemble the syringe, and the air in the double-lumen balloon catheter 400 can be expelled at once with a single injection of liquid, avoiding repeated injection of liquid and repeated air expulsion, thereby reducing surgical operations and time, and alleviating the burden on doctors.

[0035] To enable precise localization of the trigeminal ganglion during surgery, in some embodiments, the double-lumen balloon catheter 400 further includes a radiopaque marking ring 440, which is fitted onto the connection between the outer tube 420 and the balloon 430. The radiopaque marking ring 440 is made of an X-ray-nontransmissible material, such as stainless steel, allowing for real-time visualization and positioning during surgery. Under X-ray fluoroscopy, the position of the balloon 430 is clearly marked, ensuring accurate access to McBurney's capsule during foramen ovale puncture and avoiding accidental damage to surrounding blood vessels and nerves.

[0036] In some embodiments, the double-lumen balloon catheter 400 also includes a plug 450 and a wire 460. The proximal end of the plug 450 is inserted into the distal end of the inner tube 410 and seals the inner tube 410. The wire 460 is located inside the inner tube 410, with its distal end connected to the plug 450 and its proximal end connected to the tee connector 100. Thus, the plug 450 seals the distal end of the inner tube 410, forming a closed retrieval flow path. The plug 450 is also removable and made of stainless steel, similar to the imaging marker ring 440, which aids in imaging. Furthermore, the wire 460 passes through the inner tube 410 and connects the plug 450 to the tee connector 100, resisting catheter bending, deformation, or breakage, ensuring it does not collapse when passing through narrow skull openings. Similarly, the wire 460 also assists in imaging, helping the surgeon to accurately locate the catheter during surgery.

[0037] In this embodiment, the distal end of the plug 450 is conical. This provides a smooth transition between the plug 450 and the balloon 430, avoids sharp edges at the end to prevent damage to human tissue, and enhances the fit between the plug 450 and the balloon 430 sealing surface.

[0038] To ensure smooth liquid flow within the tee connector 100, in some embodiments, the outlet 130 and the transmission port 140 are located on the same horizontal line and are positioned opposite to each other. Thus, the outlet 130 and the transmission port 140 are coaxially and symmetrically distributed at 180° opposite directions. Furthermore, the opposite directions of liquid inflow and outflow eliminate turbulence interference, thereby reducing dead space bubble residue and improving venting efficiency.

[0039] Furthermore, the inlet 120 is located on the periphery of the outlet 130 and the transfer port 140 at the same horizontal level. This arrangement allows the surgeon to operate the inlet 120 valve 200 and the catheter advancement simultaneously with one hand; it also avoids tubing tangling and simplifies the surgical procedure.

[0040] In some embodiments, the inlet 120 is a standard Luer port, and the switching valve 200 is connected to the inlet 120 via the Luer port. The standard Luer port structure ensures zero leakage during syringe connection, and the standardized interface is compatible with various clinical devices, reducing preparation time.

[0041] Similarly, the outlet 130 is a standard Luer port, and the one-way valve 300 is connected to the outlet 130 via the Luer port. The outlet 130 can be connected to the cap of a standard Luer port. This also prevents leakage of liquid and allows direct connection to a waste collection bag, avoiding contamination of the operating table. The proximal end of the one-way valve 300 can also be a standard Luer port, which can be connected to the cap of a standard Luer port for closure.

[0042] Please see Figure 5 In some embodiments, the trigeminal neuralgia balloon compression device further includes an inner core structure 500, which includes a cap connector 510 and a metal inner core 520. The cap connector 510 is detachably connected to the outlet 130, and the metal inner core 520 is strip-shaped and can be inserted into the inner tube 410. The cap connector 510 can be connected to the Luer port of the outlet 130, and the cap connector 510 can be made of medical plastic; while the metal inner core 520 is made of stainless steel or other rust-free medical metal. The metal inner core 520 is inserted from the outlet 130, enters the inner tube 410, and then reaches the balloon 430. It can be used to support the catheter and protect the double-lumen balloon catheter 400 from bending and breakage. When venting air, the inner core structure 500 can be withdrawn for the convenience of the physician.

[0043] The above description is only a part or preferred embodiment of this utility model. Neither the text nor the drawings should limit the scope of protection of this utility model. All equivalent structural transformations made using the content of this utility model specification and drawings under the overall concept of this utility model, or direct / indirect applications in other related technical fields, are included within the scope of protection of this utility model.

Claims

1. A trigeminal neuralgia balloon compression device, characterized by, include: A three-way connector, the three-way connector having an inner cavity and an inlet, an outlet and a transmission port communicating with the inner cavity; A one-way valve can be installed at the liquid outlet; A dual-lumen balloon catheter, wherein the proximal end of the dual-lumen balloon catheter is connected to the transmission port, and the distal end is provided with a balloon. The dual-lumen balloon catheter has an inner tube and an outer tube, the inner tube being located inside the outer tube, forming an external cavity between the outer tube and the inner tube, and the inner tube having an internal cavity. The balloon is sleeved around the inner tube and the outer tube. The proximal end of the outer tube is connected to the transmission port, and the distal end of the outer tube is connected to the proximal end of the balloon. The proximal end of the inner tube is connected to the one-way valve, and the distal end of the inner tube is connected to the distal end of the balloon. A through-hole is provided in the inner tube located inside the balloon.

2. The trigeminal neuralgia balloon compression device of claim 1, wherein, The dual-lumen balloon catheter also includes a radiopaque ring, which is fitted onto the connection between the outer tube and the balloon.

3. The trigeminal neuralgia balloon compression device of claim 1, wherein, The dual-lumen balloon catheter also includes a plug and a metal wire. The proximal end of the plug is inserted into the distal end of the inner tube and seals the inner tube. The metal wire is located inside the inner tube, and the distal end of the metal wire is connected to the proximal end of the plug. The proximal end of the metal wire is connected to the three-way connector.

4. The trigeminal neuralgia balloon compression device of claim 3, wherein, The distal end of the plug is conical.

5. The trigeminal neuralgia balloon compression device of claim 3, wherein, The plug is made of stainless steel.

6. The trigeminal neuralgia balloon compression device of claim 1, wherein, The liquid outlet and the transmission port are located on the same horizontal line and are positioned opposite each other.

7. The trigeminal neuralgia balloon compression device of claim 6, wherein, The inlet is located on the periphery of the outlet and the transmission port at the same horizontal level.

8. The trigeminal neuralgia balloon compression device of claim 1, wherein, It also includes a switching valve, which can be detachably installed at the liquid inlet.

9. The trigeminal neuralgia balloon compression device of claim 1, wherein, The outlet is a standard Luer port, and the one-way valve is connected to the inlet via the Luer port.

10. The trigeminal neuralgia balloon compression device of claim 1, wherein, It also includes an inner core structure, which includes a cap connector and a metal inner core. The cap connector can be detachably connected to the liquid outlet, and the metal inner core is arranged in a strip shape and located inside the inner tube.

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