Myoelectric needle with protective structure
By designing an electromyography needle with a protective structure, the needle tip is protected by the sheath and spring, the potential harm problems of existing electromyography needles to medical staff during and after use are solved, and the safety protection of the needle tip is achieved, reducing the risk of damage and cross-infection.
Patent Information
- Application Number
- CN202422491325.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-10-15
AI Technical Summary
Existing electromyography acupuncture and cross-infection risks for medical staff during and after use, and lack effective needle tip protection measures.
An electromyography needle with a protective structure is designed, including conductive terminals, needle handles, needle bodies, springs, sheaths and shrapnels. Through the cooperation of the sheath and springs, the needle tip is protected during use, and the needle tip is locked through the shrapnel after use to prevent reuse.
Effective protection of needle tips reduces the risk of injury to medical staff and patients and reduces the possibility of cross-infection.
Smart Images
Figure CN223232709U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electromyoelectric needles, in particular to an electromyoelectric needle with a protective structure. Background Art
[0002] Existing electromyographic needles generally consist of a handle, a needle body, a conductive terminal, and a spring. The needle body is made of a needle tube and a needle core bonded together; the needle tube and the spring are crimped together to form a conductive path, and the needle core and the conductive terminal are crimped together to form a conductive path. Currently, electromyographic needles may be used multiple times on the same patient, depending on their condition. Because the needle tip is exposed, the following drawbacks often occur:
[0003] 1. When medical staff transfer the test site, they do not take measures to protect the needle tip, which requires them to pay attention to the protection of the needle tip at all times to avoid damage to the needle tip and injury to themselves and the patient;
[0004] 2. After a patient's test is completed, the needle tip may be easily discarded and may accidentally injure medical staff. In more serious cases, it may cause cross infection, which poses a great risk to medical staff. Utility Model Content
[0005] The utility model aims at solving the problems and deficiencies in the prior art and provides a novel electromyographic needle with a protective structure.
[0006] The utility model solves the above technical problems through the following technical solutions:
[0007] The utility model provides an electromyographic needle with a protective structure, which is characterized in that it includes a conductive terminal, a needle handle, a needle body, a spring, a sheath and a spring piece, the conductive terminal is fixed inside the needle handle, one end of the needle body passes through the head of the needle handle and is fixed to the conductive terminal, the other end passes through the spring and is then placed in the sheath, one end of the spring is fixed to the left side of the needle handle, and the other end is fixed to the right side of the sheath, the inner cavity of the sheath is divided into three chambers by two vertical partitions, which are the first chamber, the second chamber and the third chamber from left to right, the first and fourth through holes are provided on both end surfaces of the sheath, the second and third through holes are provided on the two vertical partitions, the first, second, third and fourth through holes are coaxially arranged, the spring piece is embedded and fixed in the second chamber, the top of the spring piece is provided with a groove, the needle tip of the needle body passes through the fourth through hole, the third chamber, the third through hole, the second chamber, the groove, and the second through hole in sequence and is then placed in the first chamber to form a protective structure for the needle body.
[0008] The positive and progressive effect of the present utility model is that the needle body is effectively protected by the sheath. During use, the medical staff applies a pushing force to the sheath, and the sheath is forced to move to the right. The spring is compressed due to the force, causing the needle tip to pass through the first through hole and penetrate into the detected part. After the test is completed, when the needle tip is pulled out from the detection part, the spring returns to its original state, and the needle tip then returns to the first chamber, thereby realizing the function of the sheath to protect the needle tip during use. When all the detection tasks are completed, the medical staff pulls the sheath to the left, and the needle tip gradually passes through the second through hole and enters the second chamber. Thereafter, the needle tip detaches from the groove. At this time, the shrapnel pops up with a "click", and the vertical piece of the shrapnel permanently blocks the second through hole. At this time, the needle tip is completely in the second chamber and cannot enter the first chamber again. At this point, the needle tip is locked and cannot be used again. During the entire process, the needle tip is completely invisible, protecting the needle tip while reducing the risk of injury to medical staff.
[0009] The design of the utility model effectively protects the needle tip during and after the use of the electromyography needle, thereby significantly reducing the risk of injury to medical staff and patients by the needle tip. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 This is a schematic structural diagram of the electromyographic needle with a protective structure according to the preferred embodiment.
[0011] Figure 2 This is a schematic structural diagram of the lower shell of this preferred embodiment.
[0012] Figure 3 Schematic diagram of the structure of the spring piece of this preferred embodiment.
[0013] Figure 4 This is a schematic diagram of the appearance of the electromyographic needle with a protective structure in this preferred embodiment. DETAILED DESCRIPTION
[0014] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.
[0015] This embodiment provides an electromyographic needle with a protective structure. By using the protective structure, it is ensured that the electromyographic needle can effectively protect the needle tip during and after use, thereby reducing potential damage to medical staff and patients caused by the needle tip.
[0016] like Figure 1As shown, an electromyographic needle with a protective structure includes a conductive terminal 5, a needle handle 6, a needle body 3, a spring 4, a sheath 1 and a spring 2. The conductive terminal 5 is fixed inside the needle handle 6. One end of the needle body 3 passes through the head of the needle handle 6 and is fixed to the conductive terminal 5, and the other end passes through the spring 4 and is placed in the sheath 1. One end of the spring 4 is fixed to the left outer wall of the needle handle 6, and the other end is fixed to the right outer wall of the sheath 1. The inner cavity of the sheath 1 is divided into three chambers by two vertical partitions, which are the first chamber Q1, the second chamber Q2 and the third chamber Q3 from left to right. The two end surfaces of the sheath 1 are provided with first through holes a1 and the fourth through hole a4, a second through hole a2 and a third through hole a3 are provided on the two vertical partitions, wherein the aperture of the first through hole a1 is larger than the aperture of the second through hole a2, the aperture of the second through hole a2 is larger than the aperture of the third through hole a3, the aperture of the third through hole a3 is the same as the aperture of the fourth through hole a4, and the four through holes are coaxially arranged, the spring piece 2 is embedded and fixed in the second chamber Q2, and the needle tip of the needle body 3 passes through the fourth through hole a4, the third chamber Q3, the third through hole a3, the second chamber Q2, the groove 2.1, and the second through hole a2 in sequence and is then placed in the first chamber Q1 to form a protective structure for the needle body.
[0017] Among them, Figure 2 and Figure 4 As shown, the sheath 1 is formed by connecting an upper shell and a lower shell 1a with the same physical structure; the left end surface 1.2 of the lower shell 1a is provided with a first lower through hole 1.3, and the right end surface 1.8 is provided with a fourth lower through hole 1.9, and a first lower partition 1.4 and a second lower partition 1.6 are fixed at intervals in the lower shell 1a, the top of the first lower partition 1.4 is provided with a second lower through hole 1.5, and the top of the second lower partition 1.6 is provided with a third lower through hole 1.7; the left end surface of the upper shell is provided with a first upper through hole, the right end surface is provided with a fourth upper through hole, and the first upper partition and The second upper partition has a second upper through hole at its bottom, and the second upper partition has a third upper through hole at its bottom. When the upper and lower shells 1a are docked, the first upper partition mates with the first lower partition 1.4 to form the first vertical partition, the second upper partition mates with the second lower partition 1.6 to form the second vertical partition, the first upper through hole mates with the first lower through hole 1.3 to form the first through hole, the second upper through hole mates with the second lower through hole 1.5 to form the second through hole, the third upper through hole mates with the third lower through hole 1.7 to form the third through hole, and the fourth upper through hole mates with the fourth lower through hole 1.9 to form the fourth through hole. Furthermore, in the lower shell 1a, reference 1.1 denotes the location of the shrapnel, i.e., the lower portion of the second chamber Q2.
[0018] like Figure 3As shown, the spring piece 2 includes a horizontal piece 2.4, an inclined piece 2.3, a vertical piece 2.2, and a groove 2.1. The horizontal piece 2.4, the inclined piece 2.3, the vertical piece 2.3, and the groove 2.1 are integrally formed. The right end of the horizontal piece 2.4 is fixed to the bottom end of the inclined piece 2.3 at an acute angle. The vertical piece 2.2 is fixed to the top of the inclined piece 2.3, and the inclined piece 2.3 and the vertical piece 2.2 are perpendicular. The top of the vertical piece 2.2 is provided with a groove 2.1. The aperture of the groove 2.1 is the same as the aperture of the second through hole a2. The two ends of the horizontal piece 2.4 respectively abut against the opposite inner walls of the second chamber Q2.
[0019] The protective EMG needle is used as follows: initially, the needle tip is protected within the first chamber Q1. During puncture, the medical professional applies force to the sheath 1, which forces it to the right, compressing the spring 4 and forcing the needle tip out of the first through-hole a1, allowing it to penetrate the area being tested. When the needle tip is removed and moved to another location, the sheath 1 returns to its original position under the action of the spring 4, returning the needle tip to its protected position within the first chamber Q1. When all areas have been tested, the medical professional manually pulls the sheath 1 leftward, allowing the needle tip to gradually pass through the second through-hole a2 and into the second chamber Q2. The needle tip then disengages from the groove 2.1, at which point the spring 2 snaps open, permanently blocking the second through-hole a2. The needle tip is now completely within the second chamber Q2, unable to reenter the first chamber Q1 and, thus, locked in place, preventing further use. Throughout this process, the needle tip remains completely invisible, protecting the needle tip while minimizing the risk of injury to the medical professional.
[0020] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of protection of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of protection of the present invention.
Claims
1. An electromyographic needle with a protective structure, characterized in that: It includes a conductive terminal, a needle handle, a needle body, a spring, a sheath and a spring piece. The conductive terminal is fixed inside the needle handle. One end of the needle body passes through the head of the needle handle and is fixed to the conductive terminal. The other end passes through the spring and is placed in the sheath. One end of the spring is fixed to the left side of the needle handle and the other end is fixed to the right side of the sheath. The inner cavity of the sheath is divided into three chambers by two vertical partitions, which are the first chamber, the second chamber and the third chamber from left to right. The two end surfaces of the sheath are provided with a first through hole and a fourth through hole, and the two vertical partitions are provided with a second through hole and a third through hole. Hole, the first through hole, the second through hole, the third through hole and the fourth through hole are coaxially arranged, the spring piece is embedded and fixed in the second chamber, the top of the spring piece is provided with a groove, the needle tip of the needle body passes through the fourth through hole, the third chamber, the third through hole, the second chamber, the groove, and the second through hole in sequence and is placed in the first chamber to form a protective structure of the needle body, the aperture of the groove is the same as the aperture of the second through hole, the aperture of the first through hole is larger than the aperture of the second through hole, the aperture of the second through hole is larger than the aperture of the third through hole, and the aperture of the third through hole is the same as the aperture of the fourth through hole.
2. The electromyographic needle with a protective structure according to claim 1, characterized in that: One end of the spring is sleeved and fixed on the left outer wall of the needle handle, and the other end of the spring is sleeved and fixed on the right outer wall of the sheath.
3. The electromyographic needle with a protective structure according to claim 1, characterized in that: The spring piece includes a horizontal piece, an inclined piece and a vertical piece. The inclined piece and the vertical piece are perpendicular to each other. The two ends of the horizontal piece are respectively abutted against the relative inner walls of the second chamber. The right end of the horizontal piece is fixed to the bottom end of the inclined piece. The top of the inclined piece is fixed with a vertical piece, and a groove is provided on the top of the vertical piece.
4. The electromyographic needle with a protective structure according to claim 3, characterized in that: The horizontal piece and the inclined piece form an acute triangle.
5. The electromyographic needle with a protective structure according to claim 3, characterized in that: The horizontal piece, the inclined piece and the vertical piece are integrally formed.
6. The electromyographic needle with a protective structure according to claim 1, characterized in that: The sheath is formed by connecting an upper shell and a lower shell with identical physical structures; The left end surface of the upper shell is provided with a first upper through hole, the right end surface is provided with a fourth upper through hole, a first upper partition and a second upper partition are fixed in the upper shell at intervals, a second upper through hole is provided at the bottom of the first upper partition, and a third upper through hole is provided at the bottom of the second upper partition; The left end surface of the lower shell is provided with a first lower through hole, and the right end surface is provided with a fourth lower through hole. A first lower partition and a second lower partition are fixed in the lower shell at intervals. The top of the first lower partition is provided with a second lower through hole, and the top of the second lower partition is provided with a third lower through hole. When the upper shell and the lower shell are docked, the first upper partition and the first lower partition are docked to form a first vertical partition, the second upper partition and the second lower partition are docked to form a second vertical partition, the first upper through hole and the first lower through hole are docked to form a first through hole, the second upper through hole and the second lower through hole are docked to form a second through hole, the third upper through hole and the third lower through hole are docked to form a third through hole, and the fourth upper through hole and the fourth lower through hole are docked to form a fourth through hole.