Neural stimulation needle with anesthesia function

Abstract

This utility model belongs to the field of medical device technology, specifically relating to a nerve stimulation needle with anesthesia function. It includes a puncture needle and a mounting part disposed at the tail end of the puncture needle. An anesthetic needle is disposed within the inner cavity of the puncture needle, and a telescopic part is provided at the tail end of the anesthetic needle. The telescopic part is assembled onto the mounting part and includes a tail seat, a spring, and a button. The tail seat is fixedly connected to the tail end of the anesthetic needle, and the spring is disposed between the tail seat and the button. The telescopic part is slidably disposed relative to the mounting part. An anesthetic drug delivery tubing is connected to the tail end of the anesthetic needle. The sharpness of the anesthetic needle tip is greater than that of the puncture needle tip. This nerve stimulation needle, based on the existing blunt puncture needle, adds a thin, sharp cavity, allowing the thin anesthetic needle to pass through, facilitating puncture while reducing tissue damage from the nerve stimulation needle.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a nerve stimulation needle with anesthesia function. 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 nerve stimulation needle with anesthesia function to solve the problems existing in the background art.

[0004] To achieve the above objectives, this application employs the following technical solution:

[0005] A nerve stimulation needle with anesthesia function 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. A telescopic part is disposed at the tail end of the anesthetic needle and is assembled in the mounting part. The telescopic part includes a tail seat, a spring and a button. The spring is sleeved on the tail seat, and the lower end of the spring abuts against the bottom of the mounting part, and the upper end of the spring abuts against the upper end of the tail seat. The button consists of two parts. The sharpness of the tip of the anesthetic needle is greater than that of the tip of the puncture needle.

[0006] Furthermore, a drug delivery tubing is provided at the end of the puncture needle.

[0007] Furthermore, the tailstock includes a tailstock body, the lower end of which is fixedly connected to the tail end of the anesthetic needle. The tailstock body is a tubular structure with a closed upper end, and its inner cavity is connected to the tail end of the anesthetic needle and the anesthetic needle. A radially extending extension is provided at the upper end of the tailstock, and the upper end of the spring abuts against the extension.

[0008] Furthermore, the anesthetic delivery hose passes through a through hole in the side wall of the mounting section and communicates with the inner cavity of the tailstock body.

[0009] Furthermore, the button is composed of a first button and a second button. The outer contour of the first button and the second button is matched with the inner cavity shape of the mounting part. The outer circle diameter of the part of the button located in the inner cavity of the mounting part is larger than the diameter of the top mounting hole of the mounting part. The surfaces of the first button and the second button opposite each other are provided with at least two arc-shaped grooves, and the surface of the second button opposite the first button is provided with a protrusion. The protrusion is matched with the arc-shaped grooves respectively.

[0010] Furthermore, after pressing the button, the tip of the anesthetic needle protrudes 1-2mm from the tip of the puncture needle. After pressing the button 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 10mm behind the tip of the puncture needle.

[0011] 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.

[0012] The beneficial effects of this utility model are:

[0013] 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

[0014] Figure 1 This is a schematic diagram of the structure of the button-type nerve stimulation needle with a fine needle core of this utility model.

[0015] Explanation of reference numerals in the attached figures:

[0016] 1. Puncture needle; 2. Anesthetic needle; 3. Mounting part; 4. Tailstock; 5. Spring; 6. First button; 7. Second button; 8. Drug delivery tubing; 9. Anesthetic drug delivery tubing; 10. Extension part; 11. End cap; 12. Arc-shaped groove; 13. Protrusion. Detailed Implementation

[0017] 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.

[0018] like Figure 1This application provides a nerve stimulation needle with anesthesia function, including a puncture needle 1 and an installation part 3 disposed at the tail end of the puncture needle. In the technical solution of this application, the structure of the puncture needle is the existing structure of the puncture needle, the main body is cylindrical, the overall structure of the installation part is cylindrical, and the lower end of the installation 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.

[0019] An anesthetic needle 2 is provided in the inner cavity of the puncture needle 1. 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 can be inserted into the puncture needle and slide along the inner cavity of the puncture needle.

[0020] The tail end of the anesthetic needle 2 is provided with a telescopic part, which is assembled in the mounting part 3. The telescopic part includes a tail seat 4, a spring 5 and a button. The spring 5 is sleeved on the tail seat 4, and the lower end of the spring abuts against the bottom of the mounting part 3, and the upper end of the spring abuts against the upper end of the tail seat. The button consists of two parts, and the sharpness of the tip of the anesthetic needle is greater than that of the tip of the puncture needle.

[0021] In this application, the tail end of the puncture needle is provided with a drug delivery hose 8 for connection to a puncture drug supply device.

[0022] In this application, the tailstock 4 includes a tailstock body, the lower end of which is fixedly connected to the tail end of the anesthetic needle. The tailstock body is a tubular structure with a closed upper end, and its inner cavity is connected to the tail end of the anesthetic needle and the anesthetic needle. A radially extending extension 10 is provided at the upper end of the tailstock, and the upper end of the spring 5 abuts against the extension 10.

[0023] In this application, the anesthetic delivery tubing 9 passes through a through hole in the side wall of the mounting part and communicates with the inner cavity of the tailstock body. In this embodiment, the through hole is an elongated hole, so that when the tail end of the anesthetic needle is pressed, the anesthetic delivery tubing can move up and down within the through hole, avoiding interference. In other embodiments of this application, a connecting pipe perpendicular to the axial center of the tailstock is provided on the tailstock body. The connecting pipe communicates with the inner cavity of the tailstock and passes through the through hole. The anesthetic delivery tubing is installed on the connecting pipe, which can prevent wear on the anesthetic delivery tubing when the anesthetic needle is pressed.

[0024] In this application, the tail end of the puncture needle is Y-shaped, with a drug delivery tubing 8 connected to one side and a nerve stimulation electrode connected to the other side.

[0025] In this application, the button is composed of a first button 6 and a second button 7. The outer contour of the first button 6 and the second button 7 is matched with the inner cavity shape of the mounting part. The outer circle diameter of the part of the button located in the inner cavity of the mounting part is larger than the diameter of the top mounting hole of the mounting part. At least two arc-shaped grooves 12 are provided on the surfaces of the first button and the second button opposite each other. A protrusion 13 is provided on the surface of the second button opposite to the first button. The protrusion is matched with the arc-shaped grooves respectively.

[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, and adds a spring and button to the tail end of the anesthetic needle. When puncture is needed, pressing the first button causes the needle tip to protrude 1-2mm from the puncture needle cavity, piercing the skin, and injecting a small amount of local anesthetic. Pressing the button again retracts the needle tip at least 10mm 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 a soft tube 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 to induce corresponding muscle contractions for accurate puncture confirmation. It can also be used for radiofrequency ablation.

[0029] Specifically, when not in use, the outer ends of the first and second buttons are basically horizontal, and the outer contours formed by the first and second buttons match the shape of the inner cavity of the mounting part. The circumscribed circle diameter of the part of the button located within the inner cavity of the mounting part is larger than the diameter of the mounting hole at the top of the mounting part. During assembly, the first button 6 and the second button 7 are first fitted together and placed above the tailstock of the anesthesia needle inside the mounting part. Then, the end cap 11 with the mounting hole is screwed onto the mounting part 3. Under the restoring force of the spring, the tailstock is pushed upwards, simultaneously causing the anesthesia needle to retract into the inner cavity of the puncture needle 1. At the same time, the upper surface of the tailstock abuts against the lower ends of both the first and second buttons. During use, as... Figure 1As shown, pressing the first button 6 causes the protrusion 13 on its side to disengage from the arc-shaped groove 12 of the second button, simultaneously pressing the tailstock 4 downwards, causing the anesthetic needle 2 to protrude from the inner cavity of the puncture needle 1. At the same time, the spring 5 is compressed, and the protrusion 13 of the first button 6 enters the lowermost arc-shaped groove 12 on the side surface of the second button 7, fixing the anesthetic needle relative to the puncture needle. After use, pressing the second button 7 causes the protrusion 13 to disengage from the lowermost arc-shaped groove. At this time, the tailstock moves upwards under the restoring force of the spring 5, simultaneously lifting the first button and moving it upwards until the protrusion 13 enters the arc-shaped groove at the top of the second button. At this time, the anesthetic needle retracts back into the inner cavity of the puncture needle.

[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 nerve stimulation needle with anesthetic function, characterized in that, The device includes a puncture needle and a mounting portion located at the tail end of the puncture needle. An anesthetic needle is disposed within the inner cavity of the puncture needle. A telescopic portion is provided at the tail end of the anesthetic needle and is assembled within the mounting portion. The telescopic portion includes a tail seat, a spring, and a button. The spring is sleeved on the tail seat, with its lower end abutting against the bottom of the mounting portion and its upper end abutting against the upper end of the tail seat. The button consists of two parts. The sharpness of the tip of the anesthetic needle is greater than that of the tip of the puncture needle.

2. The nerve stimulation needle with anesthetic function according to claim 1, characterized in that, The puncture needle is equipped with a drug delivery tube at its tail end.

3. The nerve stimulation needle with anesthetic function according to claim 1, characterized in that, The tailstock includes a tailstock body, the lower end of which is fixedly connected to the tail end of the anesthetic needle. The tailstock body is a tubular structure with a closed upper end, and its inner cavity is connected to the tail end of the anesthetic needle and the anesthetic needle. A radially extending extension is provided at the upper end of the tailstock, and the upper end of the spring abuts against the extension.

4. The nerve stimulation needle with anesthetic function according to claim 1, characterized in that, The anesthetic delivery tubing passes through a through hole in the side wall of the mounting section and connects to the inner cavity of the tailstock body.

5. The nerve stimulation needle with anesthetic function according to claim 1, characterized in that, The button consists of a first button and a second button. The outer contour of the first button and the second button is matched with the inner cavity shape of the mounting part. The outer circle diameter of the part of the button located in the inner cavity of the mounting part is larger than the diameter of the top mounting hole of the mounting part. The surfaces of the first button and the second button opposite each other are provided with at least two arc-shaped grooves. The surface of the second button opposite the first button is provided with a protrusion. The protrusion is matched with the arc-shaped grooves respectively.

6. The nerve stimulation needle with anesthetic function according to claim 1, characterized in that, After pressing the button, the tip of the anesthetic needle protrudes 1-2mm from the tip of the puncture needle. After pressing the button again, the anesthetic needle retracts into the inner cavity of the puncture needle, and the tip of the anesthetic needle is located at least 10mm behind the tip of the puncture needle.

7. The nerve stimulation needle with anesthetic function 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.

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