Nerve stimulation needle with fine needle core

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a nerve stimulation needle with a thin needle core, which comprises a puncture needle and a mounting part arranged at the tail end of the puncture needle, an anesthetic needle is arranged in an inner cavity of the puncture needle, a telescopic part is arranged at the tail end of the anesthetic needle and assembled on the mounting part, and the telescopic part comprises a tailstock, a spring and a button. The tail seat is fixedly connected with the tail end of the anesthetic needle, the spring is arranged between the tail seat and the button, the telescopic part is slidably arranged relative to the mounting part, and the tail end of the anesthetic needle is connected with an anesthetic conveying hose; the acutance of the needle point of the anesthetic needle is larger than that of the needle point of the puncture needle. According to the nerve stimulation needle in the technical scheme, the thin sharp cavity is additionally arranged on the basis of an existing blunt puncture needle, namely the thin anesthetic needle can penetrate through the cavity, puncture is facilitated, and meanwhile damage of the nerve stimulation needle to tissue can be reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a nerve stimulation needle with a fine needle core. Background Art

[0002] In order to reduce damage to nerves, the commonly used nerve stimulation needles are generally blunt at the end of the needle tip, but it is difficult to penetrate the skin. For patients with thick or loose skin, especially those with a thickness of more than 5 cm, it is difficult to puncture and requires the assistance of an assistant. It often takes a long time and causes great discomfort and pain to the patient. In addition, before the needle is inserted, it is often necessary to inject local anesthetics with a thinner needle tip, which will form two needle holes, which is equivalent to repeated punctures and also causes inconvenience. Summary of the invention

[0003] The object of the present invention is to provide a nerve stimulation needle with a fine needle core to solve the problems existing in the above-mentioned background technology.

[0004] To achieve the above objectives, this application is implemented through the following technical solutions:

[0005] A nerve stimulation needle with a fine needle core comprises a puncture needle and a mounting portion arranged at the tail end of the puncture needle, an anesthetic needle is arranged in the inner cavity of the puncture needle, and the sharpness of the needle tip of the anesthetic needle is greater than the sharpness of the needle tip of the puncture needle

[0006] Furthermore, a rubber cap is provided at the rear end of the mounting portion, the front end of the anesthesia needle passes through the rubber cap, and the tail end of the anesthesia needle is connected to an anesthetic delivery hose.

[0007] Furthermore, a telescopic portion is provided at the tail end of the anesthesia needle, and the telescopic portion is assembled on the mounting portion, and the telescopic portion is slidably arranged relative to the mounting portion.

[0008] Furthermore, the telescopic part includes a tailstock, a spring and a button. The tailstock is fixedly connected to the tail end of the anesthetic needle. The spring is arranged between the tailstock and the button. The tail end of the anesthetic needle is connected to an anesthetic delivery hose.

[0009] Furthermore, after pressing the button, the needle tip of the anesthesia needle protrudes 1-2 mm from the needle tip of the puncture needle. After pressing the button again, the anesthesia needle retracts into the inner cavity of the puncture needle, and the needle tip of the anesthesia needle is located at least 10 mm behind the needle tip of the puncture needle.

[0010] Furthermore, the tail end of the puncture needle is connected to a drug delivery hose.

[0011] Furthermore, the tail end of the puncture needle is Y-shaped, one side of which is connected to a drug delivery hose, and the other side is connected to a nerve stimulation electrode.

[0012] Furthermore, the button is slidably connected to the mounting portion, and the button can slide between two positions in the mounting portion.

[0013] Furthermore, a scale is provided on the outer surface of the button to display the size of the anesthesia needle extending out of the puncture needle.

[0014] Furthermore, an insulating layer and / or an insulating sleeve is provided on the outer side wall of the puncture needle. If the insulating sleeve is included, the upper end of the insulating sleeve is close to the lower end of the mounting portion.

[0015] The beneficial effects of the present invention are:

[0016] The nerve stimulation needle of the present technical solution adds a thin cavity on the basis of the existing puncture needle, that is, a thin anesthetic needle passes through, which is convenient for puncture and can reduce the damage of the existing nerve stimulation needle to the tissue. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a nerve stimulation needle with a fine needle core when not in use.

[0018] Figure 2 A schematic diagram of the structure of a nerve stimulation needle with a fine needle core in use

[0019] Figure 3 It is a bottom view of the nerve stimulation needle with a fine needle core of the present invention.

[0020] Figure 4 It is a schematic structural diagram of another embodiment of the nerve stimulation needle with a fine needle core of the present invention.

[0021] Figure 5 This is a schematic diagram of the structure of a spiral-twist type nerve stimulation needle with a fine needle core.

[0022] Figure 6 This is a schematic diagram of the structure of a push-button nerve stimulation needle with a fine needle core.

[0023] Description of reference numerals:

[0024] 1. Puncture needle; 2. Mounting part; 3. Anesthesia needle; 4. Tail stock; 5. Spring; 6. Button; 7. Anesthetic drug delivery hose; 8. Drug delivery hose; 9. Insulation sleeve; 10. Puncture needle; 11. Mounting part; 20. Anesthesia needle; 30. Insulation sleeve; 40. Drug delivery hose; 50. Anesthetic drug delivery hose; 60. Rubber cap; 110. Puncture needle; 120. Anesthesia needle; 130. Mounting part; 140. Spring; 150. Tail stock; 160. Screw button; 170. Drug delivery hose; 180. Anesthetic drug delivery hose; 190. Thread; 210. Puncture needle; 220. Anesthesia needle; 230. Mounting part; 240. Tail stock; 250. Spring; 260. Button; 270. Drug delivery hose; 280. Anesthetic drug delivery hose. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solution of the present invention, but cannot be construed as limiting the technical solution of the present invention.

[0026] Example 1

[0027] like Figures 1 to 3 As shown, the present application provides a nerve stimulation needle with a fine needle core, including a puncture needle 1 and a mounting portion 2 arranged at the tail end of the puncture needle. In the technical solution of the present application, the structure of the puncture needle 1 is the structure of the existing puncture needle, the main body is cylindrical, the overall structure of the mounting portion is cylindrical, and the lower end of the mounting portion 2 is fixedly connected to the tail end of the puncture needle 1. The above-mentioned connection method is the conventional connection method of the puncture needle currently in use, and can be obtained by those skilled in the art based on conventional knowledge.

[0028] An anesthetic needle 3 is arranged in the inner cavity of the puncture needle. The anesthetic needle of the present application is also a conventional needle 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.

[0029] The tail end of the anesthetic needle 3 is provided with a telescopic part, which is assembled on the mounting part. The telescopic part includes a tail seat 4, a spring 5 and a button 6. The tail seat is fixedly connected to the tail end of the anesthetic needle, and the spring is arranged between the tail seat and the button. The telescopic part is slidably arranged relative to the mounting part. Specifically, the tail seat 4 and the button 6 also slide relatively. The movement of the anesthetic needle is provided by the downward pressure and rebound force provided by the spring 5. The tail end of the anesthetic needle is connected to an anesthetic delivery hose 7; the sharpness of the needle tip of the anesthetic needle is greater than the sharpness of the needle tip of the puncture needle.

[0030] In the present application, the button is slidably connected to the mounting portion, and the button is able to slide between two positions in the mounting portion. The locking groove on the button 6 is engaged with the locking boss on the mounting portion 2. When the button is pressed, the anesthetic needle moves downward under the push of the spring. The button of the present application can also be set with different progresses. According to the relative depth pressed as needed, the anesthetic needle is simultaneously driven to extend out of the puncture needle to the set length.

[0031] In this application Figure 2 As shown in the figure, after pressing the button, the needle tip of the anesthesia needle protrudes 1-2mm from the needle tip of the puncture needle. After pressing the button again, the anesthesia needle retracts into the inner cavity of the puncture needle, and the needle tip of the anesthesia needle is at least 10mm behind the needle tip of the puncture needle. Otherwise, the anesthesia needle will interfere with the puncture. Figure 1 shown.

[0032] In the present application, the tail end of the puncture needle is connected to a drug delivery hose 8 .

[0033] In the present application, the tail end of the puncture needle is Y-shaped, one side of which is connected to a drug delivery hose 8, and the other side is connected to a nerve stimulation electrode.

[0034] In the present application, the button is slidably connected to the mounting portion, and the button is enabled to slide between two or more positions in the mounting portion.

[0035] In the present application, a scale is provided on the outer surface of the button to display the size of the anesthesia needle extending out of the puncture needle.

[0036] In the present application, an insulating layer and / or an insulating sleeve 9 is 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.

[0037] Working principle:

[0038] This technical solution adds a thin cavity to the original puncture needle, through which the sharp anesthetic needle core passes, and adds a spring and a button to the tail end of the anesthetic needle, and is equipped with a depth mark for the needle core. When puncture is required, press the button, and the needle tip of the anesthetic needle protrudes 1-2mm from the cavity of the puncture needle. After piercing the skin, inject a small amount of local anesthetic, and then press the button again to retract the needle tip of the anesthetic needle into the cavity of the puncture needle by at least 10mm, and then continue puncturing. At this time, there is only a blunt puncture needle tip, which reduces tissue damage. After the puncture is in place, the corresponding volume of medicine is injected through the hose connected to the tail, and the tail of the needle can also be a Y-shaped design. The tail of this puncture needle is also connected to a nerve stimulation electrode, which can be used to stimulate the nerve to cause the corresponding muscle contraction to accurately determine whether the puncture is in place, and can also be used for radiofrequency treatment.

[0039] Example 2

[0040] like Figure 4As shown, the present application provides a nerve stimulation needle with a fine needle core, including a puncture needle 10 and a mounting portion 11 disposed at the tail end of the puncture needle, and the tail end of the puncture needle is connected to a drug delivery hose 40. In this embodiment, the puncture needle and the mounting portion are both referred to in Example 1. Similarly, the structure of the puncture needle is the structure of the existing puncture needle, the main body is cylindrical, the overall structure of the mounting portion is cylindrical, and the lower end of the mounting portion is fixedly connected to the tail end of the puncture needle. The above connection method is a conventional connection method of the currently used puncture needle, which can be obtained by those skilled in the art based on conventional knowledge.

[0041] An anesthetic needle 20 is arranged in the inner cavity of the puncture needle, and a rubber cap 60 is arranged at the rear end of the mounting portion. After the front end of the anesthetic needle passes through the rubber cap, the needle tip of the anesthetic needle is located in the inner cavity of the puncture needle, and an anesthetic delivery hose 50 is connected to the tail end of the anesthetic needle for connecting with the anesthetic needle syringe. The rest of the puncture needle structure is referred to Example 1.

[0042] Example 3

[0043] like Figure 5 As shown, the present application provides a nerve stimulation needle with a fine needle core, including a puncture needle 110 and a mounting portion 130 arranged at the tail end of the puncture needle, an anesthetic needle 120 is arranged in the inner cavity of the puncture needle 110, and a telescopic portion is arranged at the tail end of the anesthetic needle 120, and the telescopic portion is assembled in the mounting portion 130, the telescopic portion includes a tail seat 150, a spring 140 and a spiral button 160, and a thread 190 is arranged on the lower side of the spiral button, the tail seat of the anesthetic needle is connected to an anesthetic delivery hose 180, and the rear end of the puncture needle 110 is connected to a drug delivery hose 170.

[0044] When in use, the button is pressed downward to overcome the elastic force of the spring, and the tail end moves downward synchronously, and the anesthetic needle extends from the cavity of the puncture needle. Then the button is rotated, and the button is fixed to the threaded connection of the inner wall of the mounting part. When the anesthesia is completed, the button is rotated in the opposite direction so that the thread on the rotating button is disengaged from the thread of the mounting part. At this time, under the action of the restoring force of the spring, the tail end is pushed upward to push out the rotating button. At this time, the anesthetic needle retracts back into the inner cavity of the puncture needle.

[0045] Example 4

[0046] like Figure 6 As shown, the present application provides a nerve stimulation needle with a fine needle core, including a puncture needle 210 and a mounting portion 230 disposed at the tail end of the puncture needle, an anesthetic needle 220 is disposed in the inner cavity of the puncture needle 210, and a telescopic portion is disposed at the tail end of the anesthetic needle 220, and the telescopic portion is assembled in the mounting portion 230, and the telescopic portion includes a tail seat 240, a spring 250 and a button 260, and the button of the present application consists of two parts. The drug delivery hose is connected to the rear end of the puncture needle, and the anesthetic delivery hose 280 is connected to the tail seat.

[0047] When not in use, the outer ends of the two parts of the button are basically horizontal, and under the action of the restoring force of the spring, the tailstock is pushed up, and the anesthesia needle is retracted into the inner cavity of the puncture needle 210. At the same time, the upper surface of the tailstock and the lower ends of the two parts of the button are both against each other. Figure 6 As shown, by pressing the right side of the button, the protrusion on its side comes out of the groove on the left side, and at the same time, the tailstock 240 is pressed and moves downward at the same time, driving the anesthetic needle 220 to protrude from the inner cavity of the puncture needle 210, and the spring 250 is in a compressed state. At the same time, the protrusion on the side of the right side of the button 260 enters the groove below the left side, so that the anesthetic needle is fixed relative to the puncture needle. After use, press the left side of the button 260 to make the protrusion come out of the lowest groove. At this time, the tailstock moves upward under the action of the restoring force of the spring 250, and at the same time, the right side of the button is lifted up and moves upward synchronously until the protrusion enters the groove on the upper part of the left side of the button 260, and the anesthetic needle shrinks back into the inner cavity of the puncture needle 210.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can still be modified or replaced by equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the scope of the technical solution of the present invention.

Claims

1. A nerve stimulation needle with a fine needle core, characterized in that: The invention comprises a puncture needle and a mounting part arranged at the tail end of the puncture needle. An anesthetic needle is arranged in the inner cavity of the puncture needle, and the sharpness of the needle tip of the anesthetic needle is greater than that of the needle tip of the puncture needle.

2. The nerve stimulation needle with a fine needle core according to claim 1, characterized in that: A rubber cap is arranged at the rear end of the mounting portion, the front end of the anesthesia needle passes through the rubber cap, and the tail end of the anesthesia needle is connected with an anesthetic delivery hose.

3. The nerve stimulation needle with a fine needle core according to claim 1, characterized in that: The tail end of the anesthesia needle is provided with a telescopic part, the telescopic part is assembled on the mounting part, and the telescopic part is slidably arranged relative to the mounting part.

4. The nerve stimulation needle with a fine needle core according to claim 3, characterized in that: The telescopic part includes a tailstock, a spring and a button. The tailstock is fixedly connected to the tail end of the anesthetic needle. The spring is arranged between the tailstock and the button. The tail end of the anesthetic needle is connected to an anesthetic delivery hose.

5. The nerve stimulation needle with a fine needle core according to claim 4, characterized in that: After pressing the button, the needle tip of the anesthesia needle protrudes 1-2 mm from the needle tip of the puncture needle. After pressing the button again, the anesthesia needle retracts into the inner cavity of the puncture needle, and the needle tip of the anesthesia needle is located at least 10 mm behind the needle tip of the puncture needle.

6. The nerve stimulation needle with a fine needle core according to claim 1, characterized in that: The tail end of the puncture needle is connected with a drug delivery hose.

7. The nerve stimulation needle with a fine needle core according to claim 6, characterized in that: The tail end of the puncture needle is Y-shaped, one side of which is connected to a drug delivery hose, and the other side is connected to a nerve stimulation electrode.

8. The nerve stimulation needle with a fine needle core according to claim 4, characterized in that: The button is slidably connected to the mounting portion, and enables the button to slide between two positions in the mounting portion.

9. The nerve stimulation needle with a fine needle core according to claim 8, characterized in that: A scale is provided on the outer surface of the button for displaying the size of the anesthesia needle extending out of the puncture needle.

10. The nerve stimulation needle with a fine needle core according to claim 1, characterized in that: An insulating layer and / or an insulating sleeve is arranged on the outer side wall of the puncture needle. If the insulating sleeve is included, the upper end of the insulating sleeve is close to the lower end of the mounting portion.

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