A multi-functional nerve stimulation needle
By incorporating a sharp anesthetic needle and a spiral button control within the nerve stimulation needle, the problems of difficult puncture and repeated punctures have been solved, achieving efficient and comfortable nerve stimulation needle puncture and anesthetic injection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- PEKING UNIVERSITY THIRD HOSPITAL (THE THIRD CLINICAL MEDICAL SCHOOL OF PEKING UNIVERSITY)
- Filing Date
- 2025-04-01
- Publication Date
- 2026-06-19
AI Technical Summary
Existing nerve stimulation needles are difficult to pierce through thick or loose skin during the puncture process, requiring the assistance of an assistant. Furthermore, repeated punctures and injections of anesthetic drugs are necessary before needle insertion, leading to discomfort and pain.
A multifunctional nerve stimulation needle was designed, which includes a sharp anesthetic needle and a puncture needle. The extension and retraction of the anesthetic needle is controlled by a spiral button. The anesthetic is injected after puncture to reduce tissue damage. The needle is precisely punctured through an insulating layer and a scale.
This method achieves successful single-needle puncture, reduces tissue damage and pain, and improves puncture efficiency and patient comfort.
Smart Images
Figure CN224370451U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of medical device technology, specifically relating to a multifunctional nerve stimulation needle. Background Technology
[0002] Currently used nerve stimulation needles generally have blunt tips to minimize nerve damage, but this makes them difficult to pierce the skin. For patients with thick or loose skin, especially those with needles longer than 5 cm, puncture is challenging, requiring an assistant and often taking a considerable amount of time, causing significant discomfort and pain for the patient. Furthermore, the need to inject local anesthetic with a fine needle tip before insertion often creates two puncture sites, essentially requiring repeated punctures, which is also inconvenient. Utility Model Content
[0003] The purpose of this invention is to provide a multifunctional nerve stimulation needle to solve the problems existing in the background art.
[0004] To achieve the above objectives, this application employs the following technical solution:
[0005] A multifunctional nerve stimulation needle includes a puncture needle and a mounting part disposed at the tail end of the puncture needle. An anesthetic needle is disposed in the inner cavity of the puncture needle, and the sharpness of the tip of the anesthetic needle is greater than that of the tip of the puncture needle.
[0006] An internal thread is provided on the upper part of the inner sidewall of the mounting part;
[0007] The tail end of the anesthetic needle is provided with a telescopic part, which is assembled on the mounting part. The telescopic part slides axially and is threadedly engaged with the mounting part.
[0008] Furthermore, the telescopic part includes a tailstock, a spring, and a spiral button. The tailstock is fixedly connected to the tail end of the anesthetic needle. The spring is sleeved on the tailstock. The lower end of the spiral button abuts against the upper end of the base. An external thread that mates with the internal thread of the mounting part is provided on the lower part of the side wall of the spiral button. The tailstock of the anesthetic needle is connected to an anesthetic delivery tubing.
[0009] Furthermore, after rotating the spiral button, the tip of the anesthetic needle protrudes 1-2 mm from the tip of the puncture needle. After rotating the spiral button in the opposite direction again, the anesthetic needle retracts back into the inner cavity of the puncture needle, and the tip of the anesthetic needle is located at least 10 mm behind the tip of the puncture needle.
[0010] Furthermore, a drug delivery tubing is connected to the end of the puncture needle.
[0011] Furthermore, the tail end of the puncture needle is Y-shaped, with a drug delivery tubing connected to one side and a nerve stimulation electrode connected to the other side.
[0012] Furthermore, a scale is provided on the outer surface of the mounting part to display the length of the anesthetic needle extending from the puncture needle.
[0013] Furthermore, an insulating layer and / or an insulating sleeve are provided on the outer wall of the puncture needle. If an insulating sleeve is included, the upper end of the insulating sleeve is close to the lower end of the mounting portion.
[0014] The beneficial effects of this utility model are:
[0015] The nerve stimulation needle in this technical solution adds a thin cavity to the existing puncture needle, allowing a thin anesthetic needle to pass through, which facilitates puncture and reduces tissue damage caused by the existing nerve stimulation needle. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of a multifunctional neurostimulation needle.
[0017] Explanation of reference numerals in the attached figures:
[0018] 110. Puncture needle; 120. Anesthetic needle; 130. Mounting part; 140. Spring; 150. Tailstock; 160. Helical button; 170. Drug delivery tubing; 180. Anesthetic drug delivery tubing; 190. Thread. Detailed Implementation
[0019] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solution of this utility model, and should not be construed as limiting the technical solution of this utility model.
[0020] like Figure 1 As shown, this application provides a multifunctional nerve stimulation needle, including a puncture needle 110 and an mounting part 130 disposed at the tail end of the puncture needle. In the technical solution of this application, the structure of the puncture needle 110 is the structure of the existing puncture needle, and the main body is cylindrical. The overall structure of the mounting part 130 is cylindrical, and the lower end of the mounting part is fixedly connected to the tail end of the puncture needle. The above connection method is the conventional connection method of the currently used puncture needle, which can be obtained by those skilled in the art based on conventional knowledge.
[0021] An anesthetic needle 120 is provided in the inner cavity of the puncture needle 110. The anesthetic needle of this application also has a conventional needle head structure, and its outer diameter is smaller than the inner diameter of the puncture needle, so that the anesthetic needle 120 can be inserted into the puncture needle 110 and slide along the inner cavity of the puncture needle.
[0022] The tail end of the anesthetic needle 120 is provided with a telescopic part, which is mounted on the mounting part. The telescopic part includes a tailstock 150, a spring 140, and a spiral button 160. The tailstock 150 is fixedly connected to the tail end of the anesthetic needle 120. The spring 140 is sleeved on the tailstock 150. The lower end of the spiral button 160 abuts against the upper end of the tailstock 150. An external thread that mates with the internal thread of the mounting part is provided on the lower part of the side wall of the spiral button 160. The tailstock of the anesthetic needle is connected to an anesthetic drug delivery tubing 180. The movement of the anesthetic needle is achieved by the spring providing downward pressure and rebound force. The sharpness of the tip of the anesthetic needle is greater than that of the puncture needle.
[0023] In this application, the tail end of the puncture needle is connected to a drug delivery tubing 170.
[0024] In this application, the tail end of the puncture needle is Y-shaped, with a drug delivery tubing connected to one side and a nerve stimulation electrode connected to the other side.
[0025] In this application, a scale (not shown in the figure) is provided on the outer surface of the mounting part to display the length of the anesthesia needle extending from the puncture needle.
[0026] In this application, an insulating layer and / or an insulating sleeve are provided on the outer wall of the puncture needle. If an insulating sleeve is included, the upper end of the insulating sleeve is close to the lower end of the mounting part.
[0027] Working principle:
[0028] This technical solution adds a narrow cavity to the original puncture needle, through which the sharp anesthetic needle core passes. A spring and button are added to the tail end of the anesthetic needle, along with a depth indicator for the needle core. When puncture is needed, press the spiral button and simultaneously rotate it clockwise. The downward-moving spiral button presses down the tailstock, causing the needle tip to protrude 1-2 mm from the puncture needle cavity. After releasing the spiral button, the threaded engagement between the spiral button and the mounting part maintains the protruding position of the anesthetic needle within the puncture needle cavity. After puncturing the skin, a small amount of local anesthetic is injected. Then, rotating the spiral button counterclockwise retracts the needle tip at least 10 mm into the puncture needle cavity before continuing the puncture. At this point, only a blunt needle tip remains, reducing tissue damage. After successful puncture, the appropriate volume of medication is injected through the tubing connected to the tail end. The tail end of the needle can also be Y-shaped. The tail end of this puncture needle is also connected to a nerve stimulation electrode, which can be used to stimulate nerves and induce corresponding muscle contractions for precise puncture accuracy. It can also be used for radiofrequency ablation.
[0029] When in use, press the spiral button downwards to overcome the spring force, and at the same time, the tail end moves down, and the anesthesia needle extends out of the puncture needle cavity. Then rotate the button, and the spiral button is fixed to the threaded connection on the inner wall of the mounting part. After anesthesia is completed, rotate the spiral button in the opposite direction, so that the thread on the spiral button disengages from the thread of the mounting part. At this time, under the action of the spring's restoring force, the tail end is pushed upwards, thereby pushing out the spiral button. At this time, the anesthesia needle retracts back into the puncture needle cavity.
[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the scope of the technical solution of this utility model.
Claims
1. A multi-functional nerve stimulation needle, characterized by, It includes a puncture needle and a mounting part disposed at the tail end of the puncture needle. An anesthetic needle is disposed in the inner cavity of the puncture needle, and the sharpness of the tip of the anesthetic needle is greater than that of the tip of the puncture needle. An internal thread is provided on the upper part of the inner sidewall of the mounting part; The tail end of the anesthetic needle is provided with a telescopic part, which is assembled on the mounting part. The telescopic part slides axially and is threadedly engaged with the mounting part.
2. The multifunctional nerve stimulation needle according to claim 1, characterized in that, The telescopic part includes a tailstock, a spring, and a spiral button. The tailstock is fixedly connected to the tail end of the anesthetic needle. The spring is sleeved on the tailstock. The lower end of the spiral button abuts against the upper end of the base. An external thread that mates with the internal thread of the mounting part is provided on the lower part of the side wall of the spiral button. The tailstock of the anesthetic needle is connected to an anesthetic delivery tubing.
3. The multifunctional nerve stimulation needle according to claim 2, characterized in that, After rotating the spiral button, the tip of the anesthetic needle protrudes 1-2 mm from the tip of the puncture needle. After rotating the spiral button in the opposite direction again, the anesthetic needle retracts into the inner cavity of the puncture needle, and the tip of the anesthetic needle is located at least 10 mm behind the tip of the puncture needle.
4. The multifunctional nerve stimulation needle according to claim 1, characterized in that, The end of the puncture needle is connected to a drug delivery tubing.
5. The multifunctional nerve stimulation needle according to claim 4, characterized in that, The tail end of the puncture needle is Y-shaped, with a drug delivery tube connected to one side and a nerve stimulation electrode connected to the other side.
6. The multifunctional nerve stimulation needle according to claim 1, characterized in that, A scale is provided on the outer surface of the mounting part to show the length of the anesthetic needle extending beyond the puncture needle.
7. The multifunctional nerve stimulation needle according to claim 1, characterized in that, An insulating layer and / or an insulating sleeve are provided on the outer wall of the puncture needle. If an insulating sleeve is included, the upper end of the insulating sleeve is close to the lower end of the mounting part.