Double-cavity Meibler's balloon dilatation balloon catheter

Abstract

The invention discloses a double-cavity Meibler's balloon dilatation balloon catheter, and relates to the technical field of medical instruments, the double-cavity Meibler's balloon dilatation balloon catheter comprises a catheter body, a balloon and a first developing ring, one end of the catheter body is a stretching-in end, the other end of the catheter body is an operating end, the catheter body is provided with a first channel and a second channel, and the first channel extends from the operating end to the stretching-in end; the balloon is arranged on the catheter body in a sleeving mode and located at the stretching-in end, the interior of the balloon is communicated with the first channel, the balloon is provided with a first end and a second end which are distributed in the axial direction of the catheter body, the first end faces the stretching-in end, the second end is the end opposite to the first end, the second channel extends from the operation end to the second end, and the second channel is communicated with the exterior of the balloon; the first developing ring is fixed to the catheter body, the first developing ring is adjacent to the balloon, and the first developing ring is located at the first end. According to the double-cavity Maiter's balloon dilatation balloon catheter, medicine can be injected into the Maiter's balloon after the balloon enters the Maiter's balloon, and clinical requirements are met.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a double-lumen Meissler balloon dilatation catheter. Background Art

[0002] Primary trigeminal neuralgia refers to severe paroxysmal pain limited to the distribution area of ​​the trigeminal nerve. The treatments for primary trigeminal neuralgia mainly include medication, surgery, and other treatments. Patients with primary trigeminal neuralgia who are ineffective with conservative treatments such as medication should consider surgical treatment in a timely manner.

[0003] At present, the surgical treatments with relatively mature clinical applications include microvascular decompression, percutaneous balloon compression, and percutaneous radiofrequency ablation. Among them, the main possible mechanism of percutaneous balloon compression is to block the nerve conduction of the trigeminal nerve by irreversible compression and damage to the large nerve fibers in the trigeminal semilunar ganglion, while the small nerve fibers that control the cornea are not affected. Therefore, it is particularly suitable for patients with the first branch being mainly affected. At the same time, because percutaneous balloon compression has the advantages of short operation time, less trauma, and fast postoperative recovery, it is often the preferred treatment method for elderly patients with severe underlying diseases or who refuse microvascular decompression.

[0004] However, the balloon catheter currently used for percutaneous balloon compression can only expand the balloon but cannot inject the required drugs into the Meith's capsule, which cannot meet clinical needs, thereby reducing the efficiency of balloon catheter placement into the Meith's capsule and making it difficult to obtain ideal balloon shaping in the Meith's capsule. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a double-lumen Meis capsule dilatation balloon catheter, which can inject drugs into Meis capsule after the balloon enters Meis capsule, meeting clinical needs.

[0006] The double-lumen Myers' balloon dilatation catheter according to an embodiment of the present invention comprises a catheter body, one end of which is an insertion end, and the other end of which is an operation end. The catheter body is provided with a first channel and a second channel, and the first channel extends from the operation end to the insertion end. A balloon, wherein the balloon is sleeved on the catheter body, the balloon is located at the insertion end, the interior of the balloon is communicated with the first channel, the balloon has a first end and a second end distributed along the axial direction of the catheter body, the first end faces the insertion end, the second end is the opposite end of the first end, the second channel extends from the operation end to the second end, and the second channel is communicated with the outside of the balloon; A first developing ring is fixed to the catheter body, the first developing ring is adjacent to the balloon, and the first developing ring is located at the first end.

[0007] The double-lumen Meis capsule dilatation balloon catheter according to the embodiment of the present invention has at least the following beneficial effects: the insertion end of the catheter body is used to puncture into Meis capsule, and the balloon is arranged at the insertion end of the catheter body. After the catheter body punctures and reaches the designated position, the balloon is located in Meis capsule; before the balloon is expanded, a contrast agent can be injected into Meis capsule through the second channel, which is beneficial to observe the situation in Meis capsule. At the same time, the first developing ring is at the first end of the balloon and can display the approximate position of the balloon; liquid can be injected into the balloon through the first channel to expand the balloon, and the expanded balloon can compress the large nerve fibers in the trigeminal semilunar ganglion, that is, percutaneous balloon compression is performed; after the balloon is expanded, local anesthetics can be injected through the second channel. The local anesthetics entering Meis capsule can improve the patient's tolerance and reduce the trigeminal cardiovascular reflex, which is beneficial to the smooth implementation of percutaneous balloon compression.

[0008] According to some embodiments of the present invention, a guide wire is provided in the first channel, and the guide wire extends from the operating end to the insertion end. One end of the guide wire is connected to the operating end to limit the axial movement of the guide wire along the first channel, and the other end of the guide wire is movably abutted against the insertion end.

[0009] According to some embodiments of the present invention, the guide wire is provided with an elastic structure, and the elastic structure is capable of changing the length of the guide wire.

[0010] According to some embodiments of the present invention, the guide wire is provided with a spiral segment, and the spiral segment is elastic, and the spiral segment is the elastic structure.

[0011] According to some embodiments of the present invention, a side of the guide wire abutting against the insertion end is a front end, and the elastic structure is located at the front end of the guide wire.

[0012] According to some embodiments of the present invention, the catheter body is connected to a handle assembly, the handle assembly is located at the operating end, the handle assembly is provided with a first interface and a second interface, the first interface is connected to the first channel, and the second interface is connected to the second channel.

[0013] According to some embodiments of the present invention, a fixing ring is provided at the connection between the handle assembly and the catheter body.

[0014] According to some embodiments of the present invention, the catheter body is provided with a plurality of liquid outlet holes, the plurality of liquid outlet holes are all communicated with the first channel, and the plurality of liquid outlet holes are located inside the balloon.

[0015] According to some embodiments of the present invention, a second developing ring is fixed to the catheter body, the second developing ring is adjacent to the balloon, and the second developing ring is located at the second end.

[0016] According to some embodiments of the present invention, a side of the first developing ring close to the extending end is a head, and the head is arc-shaped.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 It is a schematic structural diagram of a double-lumen Meis balloon dilatation balloon catheter according to an embodiment of the present invention; Figure 2 It is a cross-sectional view of the insertion end of the double-lumen Meis balloon dilatation balloon catheter according to an embodiment of the present invention; Figure 3 It is a cross-sectional view of the operating end of the double-lumen Meis balloon dilatation balloon catheter according to an embodiment of the present invention; Figure 4 It is a schematic diagram of a cross-section of a balloon and the internal space of a double-lumen Myers balloon dilatation balloon catheter according to an embodiment of the present invention.

[0019] Figure Number: The catheter body 100 , the first channel 110 , the liquid outlet 111 , the second channel 120 , the balloon 200 , the first developing ring 300 , the guide wire 400 , the spiral segment 410 , the handle assembly 500 , the first interface 510 , the second interface 520 , the fixing ring 600 , and the second developing ring 700 . DETAILED DESCRIPTION

[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0021] In the description of the present invention, it should be understood that descriptions involving orientation, such as orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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.

[0022] In the description of the present invention, "a plurality" means more than two. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0023] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0024] As described in the background technology, the current balloon catheter can only expand the balloon, but cannot inject the required drugs into the Meiss capsule, and cannot meet clinical needs. On the one hand, if a small amount of contrast agent can be injected into the Meiss capsule after the balloon reaches the Meiss capsule, and the relevant medical equipment is used for development and observation, the position of the balloon in the Meiss capsule can be determined, thereby improving the insertion efficiency of the balloon catheter. At the same time, when liquid is injected into the balloon to expand the balloon, the contrast agent in the Meiss capsule can assist in showing the outline of the balloon, which helps to feedback information to control the balloon molding.

[0025] Secondly, if a small amount of local anesthetic can be injected into the Meissberg pouch, it can improve the patient's tolerance and reduce the trigeminal cardiovascular reflex, which is conducive to the smooth implementation of percutaneous balloon compression.

[0026] Reference Figure 1 and Figure 2 As shown, a double-lumen Myers balloon dilatation balloon catheter according to an embodiment of the present invention comprises a catheter body 100, a balloon 200 and a first developing ring 300. It should be understood that Figure 1 , Figure 2 and Figure 4 In the figure, the balloon 200 is in an expanded state, and the shape of the unexpanded balloon 200 is not shown.

[0027] One end of the catheter body 100 is the insertion end, and the other end of the catheter body 100 is the operating end. The catheter body 100 is provided with a first channel 110 and a second channel 120, and the first channel 110 extends from the operating end to the insertion end; the balloon 200 is sleeved on the catheter body 100, and the balloon 200 is located at the insertion end, and the interior of the balloon 200 is communicated with the first channel 110. The balloon 200 has a first end and a second end distributed along the axial direction of the catheter body 100, the first end faces the insertion end, and the second end is the opposite end of the first end, and the second channel 120 extends from the operating end to the second end, and the second channel 120 is communicated with the outside of the balloon 200.

[0028] The insertion end of the catheter body 100 is used to penetrate into the Mai's capsule. It should be understood that the catheter body 100 itself does not have a puncture function, and other medical devices need to be used to puncture first to form a tiny channel. The catheter body 100 can enter the Mai's capsule from the tiny channel. After the catheter body 100 enters the approximate position of the Mai's capsule, a contrast agent can be injected through the second channel 120. The contrast agent is injected into the second channel 120 from the operating end and flows out from the second end. Since the balloon 200 has entered the Mai's capsule, the contrast agent also enters the Mai's capsule after flowing out from the second end. At this time, the relevant medical equipment can be used to develop and observe the situation inside the Mai's capsule, and further determine the position of the balloon in the Mai's capsule, so as to make slight adjustments and improve the efficiency of balloon placement.

[0029] It should be understood that the first developing ring 300 is fixed to the catheter body 100, and the first developing ring 300 is adjacent to the balloon 200, and the first developing ring 300 is located at the first end. The first developing ring 300 is used to assist in determining the position of the balloon 200. Because the first developing ring 300 is located at the first end of the balloon 200, the position of the first developing ring 300 can be understood as the edge position of the balloon 200. It should be understood that the balloon 200 material and the catheter body 100 material are made of non-developing materials, so the first developing ring 300 is needed to assist in determining the position of the balloon 200. The non-developing material here generally refers to a material that can transmit X-rays. After the X-rays pass through the above-mentioned material, they will not be developed on the film.

[0030] When it is determined that the balloon 200 has reached the designated position, liquid can be injected into the balloon 200 through the first channel 110 to expand the balloon 200. The expanded balloon 200 compresses the large nerve fibers in the trigeminal ganglion, completing the percutaneous balloon compression. When the balloon 200 expands and compresses the large nerve fibers in the trigeminal ganglion, it is necessary to maintain a certain length of time to cause irreversible compression damage to the large nerve fibers in the trigeminal ganglion. Therefore, after the balloon 200 is expanded, local anesthetics can also be injected through the second channel 120. The local anesthetic enters the Maier capsule through the second channel 120, which can improve the patient's tolerance and reduce the trigeminal cardiovascular reflex, ensuring that the percutaneous balloon compression can be performed smoothly.

[0031] Furthermore, during the process of the catheter body 100 penetrating the Mai Shi capsule, there may be a small channel previously punctured, or other reasons may cause the catheter body 100 to be difficult to penetrate. At this time, a metal wire can be used as a guiding structure, and the metal wire is inserted into the first channel 110. The metal wire will abut against the insertion end, so that applying external force to the metal wire can assist the catheter body 100 to continue to move to the Mai Shi capsule in the puncture channel. However, during the process of inserting the metal wire into the first channel 110, the metal wire will also occupy the space of the first channel 110, which may cause the liquid or air in the first channel 110 to be squeezed into the balloon 200, causing the balloon 200 to expand slightly in advance. When the balloon 200 does not enter the Mai Shi capsule, the expanded balloon 200 will hinder the movement of the catheter body 100. Therefore, when introducing the metal wire, it is necessary to discharge the liquid or gas in the balloon 200, and this step needs to be repeated until the balloon 200 no longer expands before passing through the puncture channel. The above steps are very cumbersome and affect the operating efficiency of the operation. It should be understood that the puncture channel can be a puncture needle sheath.

[0032] Further, to solve the above-mentioned problem, it can be understood that a guide wire 400 is provided in the first channel 110, and the guide wire 400 extends from the operating end to the insertion end. One end of the guide wire 400 is connected to the operating end to limit the axial movement of the guide wire 400 along the first channel 110, and the other end of the guide wire 400 is movably abutted against the insertion end.

[0033] The guide wire 400 is arranged in the first channel 110 in advance. When the catheter body 100 is inserted into the Maier capsule, if an obstacle is encountered, an external force can be directly applied to the guide wire 400 without re-inserting the guide wire 400 into the first channel 110. Since the guide wire 400 is already in the first channel 110, applying an external force to the guide wire 400 will not cause the liquid or gas in the first channel 110 to be squeezed toward the balloon 200, and the balloon 200 will not expand. One end of the guide wire 400 is connected to the operating end, which can prevent the guide wire 400 from slipping out of the first channel 110 and limit the axial movement of the guide wire 400 along the first channel 110. The guide wire 400 is located on one side of the insertion end and is not fixed. It is a movable abutment, which can reduce the misoperation that causes the guide wire 400 to withdraw toward the operating end and cause the catheter body 100 to move outward. It should be understood that the guide wire 400 is preferably made of metal material and has a certain rigidity, and applying an external force to the guide wire 400 can push the catheter body 100 to move toward the Maier capsule. For example, the guide wire 400 can be a guide steel wire.

[0034] It can be understood that the guide wire 400 is provided with an elastic structure, and the elastic structure can change the length of the guide wire 400 .

[0035] When external force is applied to the guide wire 400, if the force is too large, the catheter body 100 may touch the patient's tissue part. If the guide wire 400 is provided with an elastic structure, and the elastic structure can change the length of the guide wire 400, then when the catheter body 100 touches the tissue part, the guide wire 400 can shorten its length and store energy in the elastic structure.

[0036] It should be understood that if the external force applied to the guide wire 400 is too great, after the catheter body 100 passes through a portion with greater obstruction, the guide wire 400 will continue to move forward due to the slow reaction of the human body, causing the catheter body 100 to move quickly and touch the patient's tissue part, which may cause damage to the patient's brain tissue in severe cases.

[0037] The added elastic structure can shorten the guide wire 400 to absorb energy. When the catheter body 100 touches the patient's tissue site, the elastic structure shortens the guide wire 400, reducing the force of the catheter body 100 acting on the patient's tissue site and reducing the duration of the force. At the same time, when operating the guide wire 400, the doctor can feel the elastic structure contracting and absorbing energy, and thus react to reduce the force applied to the guide wire 400.

[0038] Reference Figure 2 As shown, it can be understood that the guide wire 400 is provided with a spiral section 410, and the spiral section 410 is elastic, and the spiral section 410 is an elastic structure.

[0039] The spiral segment 410 is an elastic structure. A part of the guide wire 400 is made into the spiral segment 410. The spiral segment 410 can play a role similar to a spring, that is, it has an elastic structure to absorb energy and can change the length of the guide wire 400.

[0040] It can be understood that the end of the guide wire 400 abutting the insertion side is the front end, and the elastic structure is located at the front end of the guide wire 400. In some specific embodiments, the spiral segment 410 is located at the front end of the guide wire 400. The spiral segment 410 is an elastic structure that can shrink and absorb energy. The spiral segment 410 is set at the front end of the guide wire 400, or at a position close to the front end of the guide wire 400, and its response speed is faster. Since the guide wire 400 is provided with a spiral segment 410, the spiral segment 410 will divide the guide wire 400 into a first segment and a second segment, and the side close to the insertion end is defined as the first segment. The spiral segment 410 is closer to the front end of the guide wire 400, then the smaller the length of the first segment, the smaller the deflection angle between the first segment and the first channel 110 under the action of the external force of the guide wire 400. Preferably, the length of the first segment is zero, that is, the spiral segment 410 is completely located at the front end of the guide wire 400. Further, the distance between the first end and the second end of the balloon 200 is L, then the length of the spiral segment 410 is preferably 1 / 2L.

[0041] Reference Figure 3 As shown, it can be understood that the catheter body 100 is connected to the handle assembly 500, which is located at the operating end. The handle assembly 500 is provided with a first interface 510 and a second interface 520, the first interface 510 is connected to the first channel 110, and the second interface 520 is connected to the second channel 120.

[0042] The handle assembly 500 is convenient for doctors to hold and operate the catheter body 100. Preferably, the first interface 510 can be set as an injection seat for the expansion channel, and the second interface 520 can be set as an injection seat for the injection channel. The injection seat for the expansion channel can be an independent Luer female interface.

[0043] Furthermore, the handle assembly 500 can be set as a Y-shaped structure, the tail end of the Y-shaped structure is used to connect with the catheter body 100, and the head end of the Y-shaped structure is respectively a first component and a second component that are crossed, wherein the first interface 510 can be set on the first component, and the second interface 520 can be set on the second component, and the two do not interfere with each other.

[0044] It can be understood that a fixing ring 600 is provided at the connection between the handle assembly 500 and the catheter body 100 .

[0045] The fixing ring 600 can be used to fix the handle assembly 500 on the surgical sterile sheet to reduce the risk of accidental detachment of the handle assembly 500 or the catheter body 100 when the balloon 200 is expanded.

[0046] Reference Figure 4 As shown, it can be understood that the catheter body 100 is provided with a plurality of liquid outlet holes 111 , the plurality of liquid outlet holes 111 are all communicated with the first channel 110 , and the plurality of liquid outlet holes 111 are located inside the balloon 200 .

[0047] The multiple liquid outlet holes 111 can allow the liquid to enter the interior of the balloon 200 evenly, reducing the risk of uneven expansion of the balloon 200. Preferably, the multiple liquid outlet holes 111 can be arranged along the axial direction of the catheter body 100, and can also be further distributed around the circumference of the catheter body 100, or can be spirally distributed along the axial and circumferential directions at the same time. The number of liquid outlet holes 111 can be selectively set to 3 to 5.

[0048] Reference Figure 2 or Figure 4 As shown, it can be understood that the catheter body 100 is fixed with a second developing ring 700, the second developing ring 700 is adjacent to the balloon 200, and the second developing ring 700 is located at the second end.

[0049] The second developing ring 700 can cooperate with the first developing ring 300, that is, the balloon 200 is located between the first developing ring 300 and the second developing ring 700, so the position of the balloon 200 in the Maier capsule can be determined by judging the positions of the first developing ring 300 and the second developing ring 700.

[0050] The first developing ring 300 and the second developing ring 700 can cooperate to assist in determining the position of the balloon 200 and the position of the local anesthetic injected into the Meissberg capsule after Meissberg capsule angiography. Specifically, the second channel 120 extends from the operating end to the second end, that is, from the operating end to the position of the second developing ring 700. The outlet of the second channel 120 is located at the second developing ring 700. By determining the position of the second developing ring 700, the injection position of the local anesthetic can be known.

[0051] It can be understood that the side of the first developing ring 300 close to the extending end is a head, and the head is in an arc shape.

[0052] Since the first developing ring 300 is arranged at the insertion end, when the catheter body 100 penetrates into the Maier capsule, the first part that contacts the patient is the first developing ring 300. The arc-shaped first developing ring 300 can reduce damage to the patient's tissue and also reduce the patient's pain.

[0053] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A double-lumen Myers-Barrell balloon dilatation catheter, characterized in that: include: A catheter body (100), one end of the catheter body (100) being an insertion end, the other end of the catheter body (100) being an operating end, the catheter body (100) being provided with a first channel (110) and a second channel (120), the first channel (110) extending from the operating end to the insertion end; A balloon (200), wherein the balloon (200) is sleeved on the catheter body (100), the balloon (200) is located at the insertion end, the interior of the balloon (200) is communicated with the first channel (110), the balloon (200) has a first end and a second end distributed along the axial direction of the catheter body (100), the first end faces the insertion end, the second end is the opposite end of the first end, the second channel (120) extends from the operating end to the second end, and the second channel (120) is communicated with the outside of the balloon (200); A first developing ring (300), the first developing ring (300) is fixed to the catheter body (100), the first developing ring (300) is adjacent to the balloon (200), and the first developing ring (300) is located at the first end.

2. The double-lumen Myers-Barr dilatation balloon catheter according to claim 1, characterized in that: A guide wire (400) is provided in the first channel (110), and the guide wire (400) extends from the operating end to the insertion end. One end of the guide wire (400) is connected to the operating end to limit the axial movement of the guide wire (400) along the first channel (110), and the other end of the guide wire (400) is movably abutted against the insertion end.

3. The double-lumen Myerscoff balloon dilatation catheter according to claim 2, characterized in that: The guide wire (400) is provided with an elastic structure, and the elastic structure is capable of changing the length of the guide wire (400).

4. The double-lumen Myers-Barr dilatation balloon catheter according to claim 3, characterized in that: The guide wire (400) is provided with a spiral section (410), and the spiral section (410) is elastic; the spiral section (410) is the elastic structure.

5. The double-lumen Myerscoff balloon dilatation catheter according to claim 3, characterized in that: The side of the guide wire (400) abutting against the insertion end is the front end, and the elastic structure is located at the front end of the guide wire (400).

6. The double-lumen Myers-Barr dilatation balloon catheter according to claim 1, characterized in that: The catheter body (100) is connected to a handle assembly (500), the handle assembly (500) is located at the operating end, and the handle assembly (500) is provided with a first interface (510) and a second interface (520), the first interface (510) is in communication with the first channel (110), and the second interface (520) is in communication with the second channel (120).

7. The double-lumen Myers-Barr dilatation balloon catheter according to claim 6, characterized in that: A fixing ring (600) is provided at the connection between the handle assembly (500) and the catheter body (100).

8. The double-lumen Myers-Barr dilatation balloon catheter according to claim 1, characterized in that: The catheter body (100) is provided with a plurality of liquid outlet holes (111), the plurality of liquid outlet holes (111) are all in communication with the first channel (110), and the plurality of liquid outlet holes (111) are located inside the balloon (200).

9. The double-lumen Myers-Barr dilatation balloon catheter according to claim 1, characterized in that: The catheter body (100) is fixed with a second developing ring (700), the second developing ring (700) is adjacent to the balloon (200), and the second developing ring (700) is located at the second end.

10. The double-lumen Myers-Barr dilatation balloon catheter according to claim 1, characterized in that: A side of the first developing ring (300) close to the extending end is a head, and the head is in an arc shape.

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