A trigeminal balloon catheter and method of making the same

Abstract

This invention relates to the field of medical device technology and provides a trigeminal nerve balloon catheter and its preparation method. By stretching the balloon and fixing it with silk thread, the problems of balloon detachment, separation, and damage to the balloon due to manufacturing defects are reduced. It solves the problems of easy collapse of the tube at the binding point and easy displacement of the balloon due to insufficient friction between the binding thread and the catheter during the movement of existing balloon catheter structures. The balloon is less prone to air leakage during use, which improves the manufacturability of the product and reduces the risk of product use.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a trigeminal nerve balloon catheter and its preparation method. Background Technology

[0002] Balloon compression is a common interventional procedure often used to relieve nerve pain that cannot be controlled by other techniques. During balloon compression surgery, a balloon is usually delivered to the designated location through a puncture needle, and then contrast agent is slowly injected to inflate the balloon. The expanded balloon then compresses the nerve at the designated location. This procedure is simple to perform, has a small surgical incision, causes no pain or discomfort to the patient, has a short operation time, and allows for a quick recovery. It is now widely used in clinical treatment.

[0003] In existing balloon catheters, a fluid passage is usually located below the balloon at the patient end. This weakens the strength of the initial section of the catheter. When the balloon is inflated, the inner tube is subjected to the traction force of the balloon, which can easily cause deformation or even breakage at the fluid passage, posing a safety hazard. Furthermore, the balloon is made of natural latex, while the outer tube of the balloon catheter is usually made of nylon. Their chemical properties and physical structures are different, and ordinary glue is often insufficient to achieve a strong bond, leading to the risk of air leakage during use. In addition, in some balloon catheters, the balloon is fixed to the catheter by a suture. However, during the movement of the balloon catheter, the tube at the suture is prone to collapse. Moreover, due to the small diameter of the catheter, the friction between the suture and the catheter is insufficient, making the balloon prone to displacement, which in turn leads to air leakage and affects the treatment effect. Summary of the Invention

[0004] Therefore, the purpose of this invention is to address the shortcomings of the prior art by providing a trigeminal nerve balloon catheter and its preparation method.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A method for preparing a trigeminal nerve balloon catheter includes the following steps: Step 1: Material extrusion: The outer tube, inner tube, and fixing wire are prepared by extrusion. Step 2: Balloon Formation: Prepare a natural latex turbid liquid, and then form the balloon through a dip-molding process; Step 3: Injection molding of components: Threaded caps, Y-type tees, sheaths, and inner tube valve cores are obtained through injection molding. Step 4: Opening the liquid passage hole: Use an opening tool to open the liquid passage hole on the inner tube wall. Step 5: Balloon fixation: Cut the balloon to the required length according to product requirements, then install the support ring onto the support fixture. After stretching the balloon, fix one end of the balloon to the support ring by wrapping it with fixing thread. Step 6: Balloon assembly: Adhere the support ring to the outer tube, assemble the outer tube and the inner tube, wrap and fix the other end of the balloon and the inner tube with fixing thread, then cut off the excess tube of the inner tube, and install the mushroom head to the end of the inner tube. Step 7: Tube assembly: After passing the inner tube through the Y-shaped tee, insert the inner tube valve core, stretch the outer tube and simultaneously stretch the balloon to the specified length, and simultaneously cure and bond the various components of the catheter to complete the preparation of the trigeminal nerve balloon catheter.

[0006] As a further improvement of the present invention, in step 2 of balloon molding, the dip-molding process selects a stainless steel inner core for dip-molding according to the inner diameter of the balloon, and the outer diameter of the stainless steel inner core is the inner diameter of the balloon. In the dip-molding process, the balloon wall thickness is increased by performing multiple dip-molding and curing processes on the surface of the stainless steel inner core.

[0007] As a further improvement of the present invention, in step 5, balloon fixation, after the balloon and support ring are fixed by winding and fixing with fixing wire, a rear imaging ring is installed on the surface of the fixing wire; in step 6, balloon assembly, after the balloon and inner tube are fixed by winding and fixing with fixing wire, a front imaging ring is installed on the surface of the fixing wire.

[0008] As a further improvement of the present invention, the front developing ring, the rear developing ring and the fixed wire are fitted by an interference fit.

[0009] As a further improvement of the present invention, in step 5, the balloon is fixed, the balloon stretch ratio is 1.5-2.0, and the number of turns of the fixing silk thread is not less than 10 turns.

[0010] As a further improvement of the present invention, in step 7, the outer tube is stretched to 1.2-1.5 times the original length of the balloon during tube assembly.

[0011] A trigeminal nerve balloon catheter is prepared using the method for preparing a trigeminal nerve balloon catheter as described in any one of claims 1-6.

[0012] As a further improvement of the present invention, the liquid passage hole is provided at the corresponding position on the far end face of the outer tube, the support ring is installed at the corresponding position of the liquid passage hole, and multiple liquid passage holes are provided, which are evenly distributed along the outer surface of the inner tube at 360°.

[0013] As a further improvement of the present invention, the support ring includes a support surface and a fixing groove, the fixing groove being used to fix the wire winding.

[0014] As a further improvement of the present invention, the mushroom head includes a large end and a flat surface, and the flat surface is provided with fixed spikes.

[0015] The beneficial effects of this invention are: 1. This invention provides a method for preparing a trigeminal nerve balloon catheter. By stretching the balloon and fixing it by wrapping it with silk thread, the occurrence of balloon detachment, separation, and damage to the balloon due to defects in the processing is reduced, thereby improving the manufacturability of the product and reducing the risk of product use.

[0016] 2. This invention provides a trigeminal nerve balloon catheter, which optimizes the structure of the balloon. During the processing and installation of the balloon, a certain amount of stretching is applied to the natural latex balloon, so that when the balloon is inflated, the outer contour geometry is regular and it is not easy to deviate from the balloon, which increases the convenience of clinical use.

[0017] 3. This invention provides a trigeminal nerve balloon catheter, which moves the position of the fluid passage hole on the inner tube to the corresponding position on the distal end of the outer tube, reducing the impact of the product's force on the inner tube when the balloon is inflated, and sets a support ring structure at the position of the fluid passage hole, reducing the risk of the tube body bending or being damaged due to force at the inner tube where the fluid passage hole is located.

[0018] 4. This invention provides a trigeminal nerve balloon catheter, which uses a fixing groove on the support ring and a fixing spike on the mushroom head to wrap around and support the fixing suture, thus solving the problems of easy collapse of the tube at the binding point and easy displacement of the balloon due to insufficient friction between the binding and the catheter during the movement of the balloon catheter. The balloon is not easy to leak air during use, thus ensuring the treatment effect.

[0019] 5. The trigeminal nerve balloon catheter support ring of the present invention includes a support surface and a fixing groove structure. The support ring is a hollow thin-walled metal part that is not easily deformed. When the balloon is fixed by the silk thread, the support surface ensures that the outer tube will not be squeezed and deformed. At the same time, it can ensure that there is a sufficient gap difference between the inner tube and the outer tube to ensure the smooth passage of the drug solution or contrast agent. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Appendix Figure 1 This is a schematic diagram of the overall structure of the trigeminal nerve balloon catheter of the present invention.

[0022] Appendix Figure 2 This is an exploded view of the overall structure of the trigeminal nerve balloon catheter of the present invention.

[0023] Appendix Figure 3 This is a first cross-sectional view of the anterior end structure of the trigeminal nerve balloon catheter of the present invention.

[0024] Appendix Figure 4 This is a second cross-sectional view of the anterior end structure of the trigeminal nerve balloon catheter of the present invention.

[0025] Appendix Figure 5 This is a third cross-sectional view of the anterior end structure of the trigeminal nerve balloon catheter of the present invention.

[0026] Appendix Figure 6 This is a schematic diagram of a balloon in its inflated state without being stretched and wrapped for fixation.

[0027] Appendix Figure 7 This is a schematic diagram of the balloon filling state of the trigeminal nerve balloon catheter of the present invention.

[0028] In the diagram: 1 is a threaded cap, 2 is a Y-type tee, 3 is a sheath, 4 is an inner tube valve core, 5 is an outer tube, 6 is an inner tube, 601 is a liquid passage hole, 7 is a balloon, 8 is a front developing ring, 9 is a rear developing ring, 10 is a support ring, 1001 is a fixing groove, 11 is a mushroom head, 1101 is a fixing protrusion, and 12 is a fixing thread. Detailed Implementation

[0029] The technical solutions in the embodiments of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0030] A method for preparing a trigeminal nerve balloon catheter, characterized by comprising the following steps: Step 1: The outer tube 5, inner tube 6, and fixed filament 12 are prepared by extrusion. The outer tube 5 is preferably equipped with a twin-screw extruder with a φ20mm screw, the inner tube 6 is preferably equipped with a twin-screw extruder with a φ15~20mm screw, and the fixed filament 12 is preferably equipped with a twin-screw extruder with a φ15mm or smaller screw. The outer tube 5, inner tube 6, and fixed filament 12 are obtained by extrusion using these devices.

[0031] Preferably, the outer tube 5 is typically made of polymers such as nylon or polypropylene. The inner tube 6 is typically made of polymers such as polyetheretherketone or polypropylene. The fixing filament 12 is typically made of polymers such as nylon or polyurethane elastomer.

[0032] Step 2: Prepare a natural latex suspension, the main component of which is polyisoprene. Since latex is a thermosetting material, it can be prepared using a dip-coating process. During dip-coating, a stainless steel inner core is customized according to the required inner diameter of the balloon 7. The outer diameter of the stainless steel inner core is the inner diameter of the balloon 7. During dip-coating, the stainless steel inner core is slowly lowered into the natural latex suspension using dip-coating equipment or tooling, with a descent speed of 1-3 mm / s. The surface of the natural latex suspension is taken as the zero point of descent, and the depth of descent is the original length of the balloon 7. After the inner core reaches the set length, it needs to be left to stand in the natural latex suspension for a period of time to allow the surface of the natural latex suspension to become still and free from surface tension adsorption. The standing time is 1-5 seconds. After standing, the stainless steel inner core is raised at a speed of 2-6 mm / s. After the raising is complete, it is transferred to an oven and baked at 200-300℃ for 10-50 seconds to solidify its surface. At this point, the thickness of balloon 7 is 10-25 micrometers. Repeat the above steps to increase the wall thickness of balloon 7, and then obtain balloon 7.

[0033] Step 3: Obtain threaded cap 1, Y-type tee 2, sheath 3, and inner tube valve core 4 through injection molding.

[0034] Preferably, the threaded cap 1 is typically made of a terpolymer of acrylonitrile (A), butadiene (B), and styrene (S), polycarbonate, polypropylene, nylon, and various polymers. The Y-tee 2 is typically made of a terpolymer of acrylonitrile (A), butadiene (B), and styrene (S), polycarbonate, polypropylene, nylon, and various polymers. The sheath 3 is typically made of polypropylene, nylon, and various polymers. The inner valve core 4 is typically made of a terpolymer of acrylonitrile (A), butadiene (B), and styrene (S), polycarbonate, polypropylene, nylon, and various polymers.

[0035] Step 4: Obtain the support ring 10, the back-end developing ring 9, the front-end developing ring 8, and the mushroom head 11 by purchasing from third parties in the market.

[0036] Preferably, the inner diameter of the outer tube 5 is larger than the outer diameter of the inner tube 6, and the length of the inner tube 6 is longer than that of the outer tube 5. The proximal end of the outer tube 5 is connected to the Y-shaped tee 2, and the distal end of the outer tube 5 is connected to the support ring 10. The proximal end of the inner tube 6 is connected to the inner tube valve core 4, the inner tube valve core 4 is connected to the Y-shaped tee 2, and the distal end of the inner tube 6 is connected to the mushroom head 11. The proximal end of the balloon 7 is connected to the support ring 10, and the distal end of the balloon 7 is connected to the distal end of the inner tube 6.

[0037] Step 5: Cut the balloon 7 to the required length according to product requirements. The length of the balloon 7 is approximately 0.6 to 0.8 times the required length of the finished balloon 7.

[0038] Step 6: A high-speed bench drill, equipped with a hollow drill bit and a positioning fixture with an adjustable rotation angle, is used to create a fluid passage hole 601 on the wall of the inner tube 6. The high-speed bench drill rotates at 1000~1500 r / min.

[0039] Preferably, a circular liquid passage hole 601 is formed on the tube wall of the inner tube 6 at a distance of approximately 18-25 mm from the head end. When the length of the product balloon 7 is N, the starting position of the circular liquid passage hole 601 is approximately N+1-3 mm from the head end of the inner tube 6. There are 3-6 circular liquid passage holes 601, spaced 1 mm apart. The circular liquid passage holes 601 are evenly distributed along the outer surface of the inner tube 6 in a 360° pattern, ensuring that all the circular liquid passage holes 601 are located inside the outer tube 5, avoiding the coverage area of ​​the balloon 7. When the balloon 7 expands, it will not cause compression or stretching to the perforated section of the inner tube 6, thus avoiding the risk of tube breakage.

[0040] Step 7: Select any end of the balloon 7, cut it at an angle of approximately 45°, and insert it into the rear imaging ring 9.

[0041] Step 8: Fit the support ring 10 onto the support rod fixture, insert the balloon 7, with the insertion end of the support rod fixture protruding beyond the other end of the cut angle of the balloon 7, and fix it with copper wire.

[0042] Step 9: Stretch the balloon 7 until the rear imaging ring 9 can move easily on the outer surface of the balloon 7. At this point, the stretching ratio is approximately 1.5 to 2.0.

[0043] Step 10: Fix the other end of the balloon 7. The fixing groove 1001 on the support ring 7 can be observed through the wall of the balloon 7 by touch or visual inspection. Then, the fixing thread 12 is wound clockwise around the fixing groove 1001. The winding length is not greater than 2 / 3 of the length of the rear developing ring 9, and the number of winding turns is not less than 10 turns. The fixing thread 12 should not overlap during the winding process. After the winding is completed, fix the two ends of the fixing thread 12. After the fixation is completed, move the rear developing ring 9 to the surface of the fixing thread 12. At this time, the fit between the rear developing ring 9 and the fixed thread 12 is an interference fit.

[0044] Step 11: Remove the support rod fixture.

[0045] Step 12: Bond the other end of the support ring 7 to the outer tube 5. The adhesive is preferably a UV-curable adhesive. The curing equipment has a frequency of 300W, an energy value of 70%~100%, and a curing time of 5~10s.

[0046] Preferably, the support ring 10 is a hollow, thin-walled metal part with a fixing groove 1001 on its outer surface. The use of the support ring 10 ensures that the outer tube 5 is not squeezed and deformed when the balloon 7 is fixed by wire winding. Simultaneously, it ensures a sufficient gap between the support ring 10 and the inner tube 6 to allow for the smooth passage of medication or contrast agent. The difference between the inner diameter of the support ring 7 and the outer diameter of the inner tube 6 is not less than 0.1 mm. In use, the end of the support ring 10 without the fixing groove 1001 is inserted into the inner cavity of the outer tube 5, with an insertion distance not less than 1 / 2 of the length of the support ring 7 to ensure effective fixation. It is then bonded with UV-curing adhesive. To make the bonding more reliable, the difference between the outer diameter of the support ring 7 and the inner diameter of the outer tube 5 is generally about 0.02~0.05 mm, and the outer surface of the support ring 7 is usually sandblasted.

[0047] Preferably, one end of the balloon 7 is connected to the fixing groove 1001 end of the support ring 7. The fixing groove 1001 end of the support ring 7 is located inside the balloon 7, and the connection length is generally about 1 / 2 of the length of the support ring 7. Unlike existing technologies, when connecting the balloon 7 to the support ring 7, the thread-wound section of the balloon 7 needs to be pre-stretched. The stretching length is 2 to 4 times the connection length. After stretching, the fixing thread 12 is wound and bound within the fixing groove 1001 of the support ring 7 using a certain pitch. After binding, the balloon 7 is released. At this time, the bound section of the balloon 7 can tightly wrap the fixing thread 12 inside the balloon wall. Observing this section with a magnifying glass, it can be clearly seen that the thread pitch gap protrudes from the balloon wall. By stretching and winding the balloon 7 within the fixing groove 1001 of the support ring 7, the balloon 7 can be firmly fixed to the support ring 7.

[0048] Step 13 Insert the inner tube 6 into the outer tube 5, with the front end protruding about 1-3mm from the end face of the balloon 7. Use the fixing thread 12 to wrap and fix the balloon 7 and the inner tube 6. During the wrapping and fixing process, the fixing thread 12 should always be in a taut state, and there should be no overlap or gaps after the fixing thread 12 is wrapped.

[0049] Preferably, one end of the sheath 3 is fixed to the outer surface of the Y-shaped tee 2 by a snap fastener, and the outer tube 5 passes through the inner hole of the sheath 3, but the two are not connected. The use of the sheath 3 can prevent the outer tube 5 from bending or breaking when subjected to external force.

[0050] Step 14 After winding, insert the front developing ring 8 to the designated position and cut off the excess tube body outside the front developing ring 8.

[0051] Preferably, the rear imaging ring 9 and the front imaging ring 8 are respectively fitted onto the positions after the fixing thread 12 is wound. They serve two purposes: first, to re-fix and protect the wound thread section, providing double-safety fixation; and second, to serve as make markers for catheter positioning.

[0052] Step 15 Insert the mushroom head 11 into the inner tube 6 and fix it with instant adhesive.

[0053] Preferably, the larger end of the mushroom-shaped tip 11 is rounded, serving as the tip of the catheter and preventing tissue damage during puncture. The straight section of the mushroom-shaped tip 11 is the insertion section into the inner tube. This section has two fixing protrusions 1101 on its exterior. One purpose is to store adhesive, increasing adhesion to the inner tube. The other is to fix the wound suture, preventing displacement of the balloon 7 after fixation. The mushroom-shaped tip 11 is located at the tip of the inner tube 6 and is fixed to the inner hole of the inner tube 6 by adhesive bonding. The difference in diameter between the smaller end of the mushroom-shaped tip 11 and the inner diameter of the inner tube 6 is approximately 0.02~0.05mm, and the difference in diameter between the larger end of the mushroom-shaped tip 11 and the outer tube 5 is approximately 0.4~0.6mm.

[0054] Step 16: Pass the inner tube 6 through the Y-shaped tee 2 and insert it into the inner tube valve core 4. Use UV curing adhesive to bond and cure the tube. The curing equipment has a frequency of 300W, an energy value of 60%~90%, and a curing time of 5~10s.

[0055] Preferably, the Y-shaped tee 2 is an injection-molded part with two glue-dispensing holes on its outer surface. One glue-dispensing hole is used to fix the outer tube 5, and the other glue-dispensing hole is used to fix the inner tube valve core 4. The threaded cap 1 and the Y-shaped tee 2 are connected by threads on the surface of the Y-shaped tee 2.

[0056] Step 17: Bond the inner tube valve core 4 to the Y-type tee 2 with UV-curing adhesive. The curing equipment frequency is 300W, the energy value is 80%~100%, and the curing time is 8~15s.

[0057] Preferably, the inner tube valve core 4 is an injection-molded part with an internal through hole and an adhesive reservoir on its outer wall. The inner tube valve core 4 is connected to the inner tube 6 via an ultraviolet-cured adhesive. The inner tube valve core 4 is installed inside the Y-shaped tee 2. After connection, ultraviolet-cured adhesive is injected through the dispensing hole on the Y-shaped tee 2 for bonding and fixation. Because the inner tube valve core 4 has an adhesive reservoir, the adhesive will not flow out during dispensing, thus preventing clogging.

[0058] Step 18: While stretching the outer tube 5, the balloon 7 is also stretched simultaneously. The stretching length is approximately 1.2 to 1.5 times the original length of the balloon 7. After reaching the stretching length, the outer tube 5 and the tee connector 2 are bonded together using ultraviolet light. The curing equipment has a frequency of 300W, an energy value of 80% to 100%, and a curing time of 8 to 15 seconds.

[0059] After the balloon 7 prepared by the above method is assembled, the balloon 7 is inflated under a certain pressure and then connected with the balloon that has not been stretched and wrapped. Figure 6 Compared to this, a more regular outer contour, without any deviations or deformations, results in (…). Figure 7).

[0060] It is understood that the above specific description of the present invention is only for illustrating the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Those skilled in the art should understand that modifications or equivalent substitutions can still be made to the present invention to achieve the same technical effect; as long as the use needs are met, they are all within the protection scope of the present invention.

[0061] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A method for preparing a trigeminal nerve balloon catheter, characterized in that, Includes the following steps: Step 1 Material extrusion: The outer tube (5), inner tube (6) and fixing wire (12) are prepared by extrusion. Step 2: Balloon shaping: Prepare a natural latex turbid liquid, and then shape the balloon (7) through a dip-molding process; Step 3 Component Injection Molding: Through injection molding process, threaded cap (1), Y-type tee (2), sheath (3) and inner tube valve core (4) are obtained; Step 4: Opening the liquid passage hole: Use an opening tool to open the liquid passage hole (601) on the wall of the inner tube (6); Step 5: Balloon fixation: According to product requirements, the balloon (7) is cut to length, and then the support ring (10) is installed on the support fixture. After stretching the balloon (7), one end of the balloon (7) is wrapped and fixed to the support ring (10) through the fixing thread (12). Step 6 Balloon Assembly: Bond the support ring (10) to the outer tube (5), assemble the outer tube (5) and the inner tube (6), use the fixing thread (12) to wrap and fix the other end of the balloon (7) and the inner tube (6), then cut off the excess tube of the inner tube (6), and install the mushroom head (11) to the end of the inner tube (6); Step 7: Tube assembly: After passing the inner tube (6) through the Y-shaped tee (2), insert the inner tube valve core (4), stretch the outer tube (5) and simultaneously stretch the balloon (7) to the specified length, and simultaneously solidify and bond the various components of the catheter to complete the preparation of the trigeminal nerve balloon catheter.

2. The method for preparing the trigeminal nerve balloon catheter according to claim 1, characterized in that, In step 2, balloon molding, the dip molding process selects a stainless steel inner core for dip molding based on the inner diameter of the balloon (7). The outer diameter of the stainless steel inner core is the inner diameter of the balloon (7). In the dip molding process, the balloon (7) wall thickness is increased by repeatedly dip molding and curing on the surface of the stainless steel inner core.

3. The method for preparing the trigeminal nerve balloon catheter according to claim 1, characterized in that, In step 5, the balloon is fixed by winding the balloon (7) and the support ring (10) together with the fixing thread (12). After the fixing thread (12) is wound and fixed, a rear end imaging ring (9) is installed on the surface of the fixing thread (12). In step 6, the balloon is assembled by winding the balloon (7) and the inner tube (6) together with the fixing thread (12). After the fixing thread (12) is wound and fixed, a front end imaging ring (8) is installed on the surface of the fixing thread (12).

4. The method for preparing the trigeminal nerve balloon catheter according to claim 3, characterized in that, The front developing ring (8), the rear developing ring (9), and the fixed wire (12) are fitted with an interference fit.

5. The method for preparing the trigeminal nerve balloon catheter according to claim 1, characterized in that, In step 5, during balloon fixation, the stretch ratio of the balloon (7) is 1.5-2.0, and the number of turns of the fixing thread (12) is not less than 10.

6. The method for preparing a trigeminal nerve balloon catheter according to claim 1, characterized in that, In step 7, during tube assembly, the outer tube (5) is stretched to a length that is 1.2-1.5 times the original length of the balloon (7).

7. A trigeminal nerve balloon catheter, characterized in that, It was prepared using the method for preparing the trigeminal nerve balloon catheter according to any one of claims 1-6.

8. The trigeminal nerve balloon catheter according to claim 7, characterized in that, The liquid passage hole (601) is located at the corresponding position on the far end face of the outer tube (5), and the support ring (10) is installed at the corresponding position of the liquid passage hole (601). There are multiple liquid passage holes (601), and the liquid passage holes (601) are evenly distributed along the outer surface of the inner tube (6) at 360°.

9. The trigeminal nerve balloon catheter according to claim 7, characterized in that, The support ring (10) includes a support surface and a fixing groove (1001), which is used to fix the wire (12) by winding.

10. The trigeminal nerve balloon catheter according to claim 7, characterized in that, The mushroom head (11) includes a large end and a flat surface, and a fixing protrusion (1101) is provided on the flat surface.

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