Novel foramen ovale puncture needle suite
By designing a new foramen ova puncture needle kit, the problem of multiple replacement of the puncture needle core was solved, and the integrated operation of puncture and expansion was achieved, improving the efficiency of trigeminal neuralgia surgery.
Patent Information
- Application Number
- CN202421881226.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-06
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-08-06
AI Technical Summary
In the prior art, in percutaneous balloon compression surgery for treating trigeminal neuralgia, the puncture needle core needs to be replaced multiple times, which is complicated to operate and affects the efficiency of the surgery.
A new type of oval oval puncture needle kit is designed, including a puncture needle sheath and a puncture needle core assembly. Through the coordination of limiting blocks, bumps, steps and snaps, the fixed connection between the puncture needle core and the needle sheath is achieved, avoiding the replacement of the needle core during the puncture process and integrating it into a needle core for expansion operation.
Simplified surgical operations, improved surgical efficiency, reduced the number of device replacements, and improved the convenience and efficiency of surgery.
Smart Images
Figure CN223158413U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical devices, and in particular relates to a novel foramen ovale puncture needle kit. Background Art
[0002] Trigeminal neuralgia, considered the most severe painful disease ever suffered by humans, is characterized by frequent, intense facial pain, severely impacting patients' quality of life. The prevalence of trigeminal neuralgia is 182 per 100,000 people, with the disease being more common among middle-aged and elderly people.
[0003] In principle, medical treatment is the preferred treatment for trigeminal neuralgia, with carbamazepine being the preferred drug. However, as the disease progresses, approximately 30%-70% of patients experience poor response to medication or unbearable side effects, necessitating the recommendation of alternative treatment options. Percutaneous balloon compression for trigeminal neuralgia is simple, safe, and effective, and is now widely used in China. Under X-ray guidance, a microballoon is inserted through a sheath approximately 2.5 cm from the corner of the mouth on the affected side toward the foramen ovale. The microballoon is then introduced through the foramen ovale into the semilunar ganglion of the trigeminal nerve in Meckle's cave. Contrast agent is then slowly injected to fill the balloon, compressing the pain-sensing fibers of the trigeminal nerve while maximally preserving sensory fibers. The immediate postoperative pain relief rate exceeds 95%. This procedure requires general anesthesia and requires specific puncture sites and technical techniques. The puncture needle consists of a core and a sheath. The balloon is introduced through the sheath lumen into the Meckle's cave. The core acts to fill the sheath during puncture, preventing tissue from clogging the lumen. With the assistance of imaging equipment, check the tip position and direction of the puncture needle. After confirming that the tip has reached the foramen ovale, pull out the needle core, keep the needle sheath in place, and then use two other slightly longer puncture needle cores 2 and 3, and insert them along the needle sheath in sequence. Under the guidance of imaging equipment, pre-expand the balloon catheter to the position of Meckle's capsule, then remove the puncture needle core, and then send the prepared balloon through the needle sheath into Meckle's cavity to compress the trigeminal nerve.
[0004] However, in the above prior art, the puncture needle core needs to be replaced multiple times during surgery, which makes the operation process cumbersome and affects the efficiency of the surgery. Utility Model Content
[0005] In view of the above-mentioned deficiencies in the prior art, the present invention provides a novel foramen ovale puncture needle kit to solve the above-mentioned existing problems.
[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:
[0007] A novel patent foramen ovale puncture needle kit, comprising a puncture needle sheath and a puncture needle core assembly. A needle sheath handle is fixedly connected to the end of the puncture needle sheath. On the inner wall of the needle sheath handle, there are a first bump, a first step and a second step. A groove is provided on the end face of the second step. The puncture needle core assembly includes a hollow needle core and a solid needle core passing through the hollow needle core. A first needle core handle is fixedly connected to the end of the hollow needle core. A second needle core handle is fixedly provided at the end of the solid needle core. A buckle is provided on the inner wall of the first needle core handle, and a limiting block and a guide groove are provided on the outer wall of the first needle core handle. A second bump is provided on the bottom end face of the limiting block. A limiting boss and a guiding block are provided on the outer wall of the second needle core handle.
[0008] Furthermore, the limiting block is in interference fit with the first bump to limit the first needle core handle from coming out.
[0009] Furthermore, the groove is correspondingly connected with the second bump to limit the first needle core handle from rotating in the circumferential direction.
[0010] Furthermore, the buckle is connected in comparison with the limiting boss to limit the second needle core handle from coming out.
[0011] Furthermore, scale lines are provided on the outer surface of the puncture needle sheath.
[0012] Compared with the prior art, the utility model has the following beneficial effects:
[0013] In the operation of percutaneous balloon compression for the treatment of trigeminal neuralgia, when the tip of the puncture needle reaches the foramen ovale, keep the needle sheath fixed, there is no need to replace other needle cores. By adjusting the handle, the needle cores with different diameters continue to enter the needle, successively pre-expand the balloon catheter channel, integrate the puncture needle core and the pre-expansion balloon channel needle core into one needle core, and limit the needle insertion length corresponding to different use stages, reduce the replacement of instruments during the operation, and simplify the surgical operation. Description of the Drawings
[0014] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of a novel patent foramen ovale puncture needle kit of the utility model;
[0015] Figure 2 It is a structural schematic diagram of the puncture needle sheath in an embodiment of a novel patent foramen ovale puncture needle kit of the utility model;
[0016] Figure 3 It is a three-dimensional structural schematic diagram of the puncture needle core assembly in an embodiment of a novel patent foramen ovale puncture needle kit of the utility model;
[0017] Figure 4 It is a schematic diagram of the use state (state one) of an embodiment of a novel patent foramen ovale puncture needle kit of the utility model;
[0018] Figure 5 This is a schematic diagram of a novel foramen ovale puncture needle kit embodiment of the present invention in use (state 2);
[0019] Figure 6 This is a schematic diagram of the usage state (state three) of an embodiment of a novel foramen ovale puncture needle kit of the present utility model. DETAILED DESCRIPTION
[0020] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.
[0021] Among them, the drawings are only used for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limiting this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.
[0022] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0023] In the description of this utility model, unless otherwise expressly specified or limited, when the term "connection" or the like appears to indicate a connection relationship between components, such term should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be internal communication between two components or an interaction relationship between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.
[0024] Example:
[0025] like Figures 1 - 6As shown, the present invention provides a novel foramen ovale puncture needle kit, comprising a puncture needle sheath 1 and a puncture needle core 2. The puncture needle sheath 1 comprises a hollow tube 11 made of medical-grade stainless steel or other suitable metal materials. The sheath 11 provides sufficient radial support and a smooth inner surface for smooth passage of other instruments. Scale lines 12 are printed on the outer surface of the sheath 11 for easy monitoring of puncture depth. The end of the needle sheath 11 is connected to the needle sheath handle 13, and the inner wall is designed with a protrusion 16 and a graded step 14 and step 15. The limit block on the needle core handle 22 is interference fit with the protrusion 16, and slides over the protrusion 16 through elastic deformation to prevent the needle core handle from coming out; at different stages of use, the limit block 23 on the needle core handle 22 contacts and aligns with the end faces of the steps 14 and 15 respectively to control the needle insertion depth. Among them, there is a groove 17 on the end face of the step 15, which matches the protrusion 26 on the needle core handle 22 to limit the rotation of the needle core handle 22 in the circumferential direction. The needle sheath handle 13 is preferably made of commonly used medical plastics such as ABS, and is fixedly connected to the needle sheath 11 by hot melting, bonding, etc.; the puncture needle core 2: consists of two needle cores, the needle core 21 is a hollow tubular structure, and the needle core 31 is a solid metal needle that passes through the needle core 21. The material is preferably medical grade stainless steel or other metal materials that meet the requirements. The tail end is connected to the needle core handle 22 and the needle core handle 32, and the material is commonly used medical plastics such as ABS. A buckle 25 is designed near the end position of the inner wall of the needle core handle 32, which matches the limiting boss 33 to limit the needle core handle 32 from falling out; a guide groove 24 is provided on the side, which slides with the guide block 34 to control the insertion depth of the needle core 31; a limiting block 23 is designed on the outer wall to limit the insertion depth of the needle core 21 (or the needle core 21 and the needle core 31 as a whole), and there is a convex point 26 structure on the bottom end face of the limiting block 23 to constrain the freedom of the needle core handle 22 along the circumferential direction.
[0026] According to the surgical procedure of percutaneous balloon compression for the treatment of trigeminal neuralgia, during the puncture process, when the tip of the puncture needle reaches the foramen ovale, the needle is stopped and the position of the needle sheath is kept fixed. A slightly longer needle core is replaced and inserted along the needle sheath to Meckle's cavity to pre-expand a channel for the balloon catheter, making it easier for the balloon catheter to enter the Meckle's cavity.
[0027] The specific usage status of this utility model is as follows:
[0028] State 1: When the puncture needle sheath is stationary, the stopper 23 is aligned with the step 15, and the position relationship between the needle core and the needle sheath tip is as follows: Figure 4 As shown, the needle cores 21 and 31 are flush with the needle sheath.
[0029] State 2: Based on state 1, the limit block 23 is in contact and aligned with the step 15, and the needle core handle 32 is rotated at a certain angle to align the guide block 34 with the guide groove 24. At this time, pressing the handle guide block 34 can pass through the guide groove 24, and only control the needle core 31 to advance.
[0030] State three: Based on state two, rotate the needle core handle 32 by a certain angle, drive the needle core handle 22 to rotate through the guide block 34, so that the limit block 23 is misaligned with the step 15. At this time, press the handle 32 to contact and align with the step 14, and the needle core 2 and the needle core 3 enter the needle together, making the diameter of the pre-dilation channel closer to the outer diameter of the balloon.
[0031] After dilation, remove the needle core to complete the puncture, realizing the integration of puncture and dilation, reducing the replacement of instruments during the operation, and improving the surgical efficiency.
[0032] The above are only the embodiments of the present invention. Specific structures and common knowledge such as characteristics well known in the art are not described in detail here. Those of ordinary skill in the art know all the common technical knowledge in the technical field of the utility model before the application date or the priority date, can know all the existing technologies in this field, and have the ability to apply the conventional experimental means before this date. Those of ordinary skill in the art can, under the inspiration given in this application, combine their own abilities to improve and implement this solution. Some typical well-known structures or well-known methods should not become obstacles for those of ordinary skill in the art to implement this application. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent.
Claims
1. A novel patent foramen ovale puncture needle kit, characterized in that: It includes a puncture needle sheath and a puncture needle core assembly. A needle sheath handle is fixedly connected to the end of the puncture needle sheath. On the inner wall of the needle sheath handle, there are a first bump, a first step and a second step. A groove is provided on the end face of the second step. The puncture needle core assembly includes a hollow needle core and a solid needle core penetrating through the hollow needle core. A first needle core handle is fixedly connected to the end of the hollow needle core. A second needle core handle is fixedly provided at the end of the solid needle core. A buckle is provided on the inner wall of the first needle core handle, and a limiting block and a guide groove are provided on the outer wall of the first needle core handle. A second bump is provided on the bottom end face of the limiting block. A limiting boss and a guiding block are provided on the outer wall of the second needle core handle.
2. The novel patent foramen ovale puncture needle kit according to claim 1, wherein: The limiting block is in interference fit with the first bump to limit the first needle core handle from disengaging.
3. The novel patent foramen ovale puncture needle kit according to claim 2, characterized in that: The groove is correspondingly connected with the second bump to limit the first needle core handle from rotating in the circumferential direction.
4. A novel patent foramen ovale puncture needle kit according to claim 3, characterized in that: The buckle is connected with the limiting boss in a matching manner to limit the second needle core handle from disengaging.
5. A novel patent foramen ovale puncture needle kit according to claim 4, characterized in that: Scale lines are provided on the outer surface of the puncture needle sheath.