Brain puncture needle
By setting the needle and incision on the needle core of the brain puncture needle and setting the needle sleeve on the outside of the needle tube, the problems of difficulty and low safety are solved, and smoother puncture operation and higher safety are achieved.
Patent Information
- Application Number
- CN202422036275.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-08-21
AI Technical Summary
The existing ventricular puncture needles are difficult to penetrate harder bone during puncture operations, increasing the risk of surgery and reducing safety.
Design a brain puncture needle, with a needle on the needle core and an incision on the needle tube. The needle passes through the needle tube and extends to the outside of the incision. It is used in conjunction with the use of the needle to penetrate the bone, and a needle sleeve is placed outside the needle to protect the needle and incision.
It reduces the difficulty of puncture, improves the effect and safety of puncture, enhances stability, and simplifies the operation process.
Smart Images
Figure CN223126614U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, in particular to a brain puncture needle. Background Art
[0002] External ventricular drainage is an emergency treatment method suitable for patients with acute obstructive hydrocephalus. The ventricular puncture needle plays a key role in external ventricular drainage. During the operation, the scalp is first incised linearly at the skull drilling site, then the dura mater is incised from the skull drilling to the incision of the dura mater, and then a metal ventricular puncture needle is inserted into the incision site of the cerebral surface pia mater and deep into the ventricle to form a channel. After the ventricular puncture needle successfully penetrates into the ventricle, the external ventricular drainage tube can be punctured into the ventricle along the direction of the ventricular puncture needle, and the contents in the ventricle (such as cerebrospinal fluid, blood, etc.) can be drained out to reduce intracranial pressure and relieve the condition.
[0003] The ventricular puncture needle generally consists of a needle tube, a stylet, a needle seat and other auxiliary components. The existing ventricular puncture needles usually have a needle tip on the needle tube. The needle tip is a beveled tip, which is not easy to penetrate the harder bone during the operation, resulting in difficult puncture operation, increasing the surgical risk and reducing the safety. Therefore, it is necessary to design a new brain puncture needle. Summary of the Utility Model
[0004] The purpose of this application is to provide a brain puncture needle, aiming to solve the technical problems of difficult puncture operation and low safety existing in the existing ventricular puncture needles.
[0005] An embodiment of this application provides a brain puncture needle, which includes a stylet. A needle tube is sleeved outside the stylet. A needle tip is provided at the top end of the stylet. An incision is provided at the top end of the needle tube. The needle tip passes through the needle tube and extends to the outside of the incision.
[0006] In one embodiment, the needle tip is a conical tip.
[0007] In one embodiment, the incision is an inclined incision.
[0008] In one embodiment, both the stylet and the needle tube are arranged in a cylindrical shape.
[0009] In one embodiment, the materials of the stylet and the needle tube are metal.
[0010] In one embodiment, scale marks are provided on the outer wall of the needle tube.
[0011] In one embodiment, the scale marks are annular scale lines.
[0012] In one embodiment, a first needle holder is provided at the end of the stylet, a second needle holder is provided at the end of the needle tube, a positioning groove is provided in the second needle holder, and a part of the first needle holder is inserted into the positioning groove and tightly connected to the positioning groove.
[0013] In one embodiment, a needle sleeve is sleeved outside the needle tube, and the needle tip and the incision are located inside the needle sleeve.
[0014] In one embodiment, the needle sleeve is made of metal.
[0015] The present utility model provides a brain puncture needle. Compared with the prior art, its beneficial effects are as follows: By providing a needle tip on the stylet and an incision on the needle tube, the needle tip passes through the needle tube and extends outside the incision. In this way, the cooperation of the needle tip and the incision can penetrate harder bone, reducing the puncture difficulty, reducing the surgical risk, improving the puncture effect, and improving the safety; By sleeving a needle sleeve outside the needle tube, the needle tip and the incision are located inside the needle sleeve, which is convenient for protecting the needle tip and the incision, avoiding damage caused by external force and thus affecting the puncture effect of the brain puncture needle, and improving the stability. The structure of the present utility model is simple, the operation is convenient, the puncture difficulty is low, the puncture effect is good, the safety factor is high, and the practicability is high. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0017] Figure 1 FIG. 1 is a schematic structural diagram of a brain puncture needle provided by an embodiment of the present application;
[0018] Figure 2 is Figure 1 a schematic combined structural diagram of the stylet and the needle tube of the brain puncture needle shown in FIG. 1;
[0019] Figure 3 is Figure 1 a schematic structural diagram of the stylet of the brain puncture needle shown in FIG. 1;
[0020] Figure 4 is Figure 1 a schematic structural diagram of the needle tube of the brain puncture needle shown in FIG. 1;
[0021] Figure 5 is Figure 1 a schematic structural diagram of the needle sleeve of the brain puncture needle shown in FIG. 1;
[0022] Figure 6 isFigure 2 Schematic enlarged structure diagram of part A of the brain puncture needle shown
[0023] Explanation of symbols in the figure:
[0024] 1. Needle core; 2. Needle tube; 3. Needle sleeve; 4. Needle tip; 5. Incision; 6. Scale mark; 7. First needle seat; 8. Second needle seat Specific embodiments
[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application clearer, the following further details this application in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit this application
[0026] It should be noted that when an element is referred to as "fixed" or "disposed" with another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected" with another element, it can be directly connected to the other element or indirectly connected to the other element
[0027] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, and cannot be understood as indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this application. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance
[0028] Please refer to Figure 1 , which is a schematic structural diagram of a brain puncture needle provided by an embodiment of this application. For the convenience of description, only the parts related to this embodiment are shown and are described in detail as follows
[0029] In one of the embodiments, please combine Figures 2 - 4 and Figure 6 , a brain puncture needle includes a needle core 1, a needle tube 2 is sleeved outside the needle core 1, a needle tip 4 is provided at the top of the needle core 1, an incision 5 is provided at the top of the needle tube 2, and the needle tip 4 passes through the needle tube 2 and extends outside the incision 5. The needle tip 4 and the incision 5 are used as the core components of the brain puncture needle for puncture
[0030] By setting the needle tip 4 on the stylet 1 and the incision 5 on the cannula 2, the needle tip 4 passes through the cannula 2 and extends to the outside of the incision 5. In this way, the cooperation of the needle tip 4 and the incision 5 can penetrate harder bone, reduce the puncture difficulty, reduce the surgical risk, improve the puncture effect, and improve the safety.
[0031] Specifically, please refer to Figures 3 - 4 , the needle tip 4 is conical and pointed, and the incision 5 is an inclined incision. Such a setting helps to reduce the resistance during puncture, reduce the puncture difficulty, and make the puncture operation smoother.
[0032] In one embodiment, please refer to Figures 3 - 4 , both the stylet 1 and the cannula 2 are set to be cylindrical. Such a setting helps to reduce the frictional resistance between the brain puncture needle and the tissue, making the puncture smoother.
[0033] In one embodiment, please refer to Figures 3 - 4 , the materials of the stylet 1 and the cannula 2 are metal, which can be medical-grade stainless steel or other materials, as long as they have good biocompatibility and will not cause adverse reactions to the patient's tissue. The metal material has high hardness and toughness, which can ensure that the brain puncture needle maintains a stable shape and sufficient penetration force during puncture, ensuring the accuracy of puncture.
[0034] In one embodiment, please refer to Figure 2 and Figure 4 , a scale mark 6 is provided on the outer wall of the cannula 2. The scale mark 6 facilitates the medical staff to master the puncture depth, avoid unnecessary damage to the patient caused by excessive puncture depth, and effectively prevent puncture accidents.
[0035] In one embodiment, please refer to Figure 2 and Figure 4 , the scale mark 6 is a circular scale line, so that the scale line can be seen no matter how the cannula 2 rotates. The scale line can be engraved by the method of laser superficial etching, which is safe and not easy to fade.
[0036] In one embodiment, please refer to Figures 1 - 4 , a first needle seat 7 is provided at the end of the stylet 1, and a second needle seat 8 is provided at the end of the cannula 2. A positioning groove is provided in the second needle seat 8, and a part of the first needle seat 7 is inserted into the positioning groove and tightly connected to the positioning groove; the cooperation of the first needle seat 7 and the positioning groove realizes the connection between the stylet 1 and the cannula 2, avoiding the separation of the stylet 1 and the cannula 2 during the operation and improving the safety. In addition, the design of the first needle seat 7 and the positioning groove is beneficial to the assembly and disassembly of the brain puncture needle, and the operation is convenient.
[0037] In one embodiment, please refer to Figure 1 and Figure 5, a needle sleeve 3 is sleeved outside the needle tube 2, and the needle tip 4 and the incision 5 are located inside the needle sleeve 3. In this way, the needle sleeve 3 can protect the needle tip 4 and the incision 5, avoiding damage caused by external force and thus affecting the puncture effect of the brain puncture needle, and improving the stability.
[0038] In one embodiment, please refer to Figure 1 and Figure 5 , the material of the needle sleeve 3 is metal, which can increase the protection strength for the needle tip 4 and the incision 5.
[0039] The following combines Figures 1 - 6 , and describes the working process of a brain puncture needle of the present application as follows:
[0040] Before puncture, remove the needle sleeve 3, insert the stylet 1 into the needle tube 2 until part of the first needle seat 7 is stuck in the positioning groove of the second needle seat 8. At this time, the needle tip 4 passes through the needle tube 2 and extends outside the incision 5, and the stylet 1 and the needle tube 2 are assembled.
[0041] During puncture, hold the needle with the left hand and apply pressure with the right hand to insert the needle. When the needle tip 4 pierces the ventricular wall, the resistance can be significantly felt to weaken. At this time, determine the puncture position through the scale mark 6 on the needle tube 2 to form a puncture channel.
[0042] After the puncture is completed, pull out the stylet 1 and the needle tube 2, confirm whether there is cerebrospinal fluid outflow, and then insert the external ventricular drainage tube along the puncture channel to drain the contents in the ventricle.
[0043] In summary, the present utility model provides a brain puncture needle. By setting a needle tip on the stylet and an incision on the needle tube, the needle tip passes through the needle tube and extends outside the incision. In this way, the needle tip and the incision are used in combination, which can penetrate harder bone, reduce the puncture difficulty, reduce the surgical risk, improve the puncture effect, and improve the safety; by sleeving a needle sleeve outside the needle tube, the needle tip and the incision are located inside the needle sleeve, which is convenient for protecting the needle tip and the incision, avoiding damage caused by external force and thus affecting the puncture effect of the brain puncture needle, and improving the stability. The structure of the present utility model is simple, the operation is convenient, the puncture difficulty is low, the puncture effect is good, the safety factor is high, the practicability is high, and it can be widely applied to the technical field of medical devices.
[0044] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the protection scope of the present application.
Claims
1. A brain puncture needle, comprising a stylet (1), and a needle tube (2) sleeved outside the stylet (1), characterized in that, The top end of the stylet (1) is provided with a needle tip (4), the top end of the needle tube (2) is provided with a notch (5), and the needle tip (4) passes through the needle tube (2) and extends to the outside of the notch (5); a needle sleeve (3) is sleeved outside the needle tube (2), and the needle tip (4) and the notch (5) are located inside the needle sleeve (3).
2. The brain puncture needle according to claim 1, wherein The needle tip (4) is a conical sharp tip.
3. The brain puncture needle according to claim 1, characterized in that, The notch (5) is an inclined notch.
4. The brain puncture needle according to claim 1, characterized in that, Both the stylet (1) and the needle tube (2) are arranged in a cylindrical shape.
5. The brain puncture needle according to claim 1, characterized in that, The materials of the stylet (1) and the needle tube (2) are metals.
6. The brain puncture needle according to claim 1, characterized in that, A scale mark (6) is provided on the outer wall of the needle tube (2).
7. The brain puncture needle according to claim 6, wherein The scale mark (6) is an annular scale line.
8. The brain puncture needle according to claim 1, wherein, A first needle hub (7) is provided at the end of the stylet (1), a second needle hub (8) is provided at the end of the needle tube (2), a positioning groove is provided in the second needle hub (8), and a part of the first needle hub (7) is inserted into the positioning groove and is tightly connected with the positioning groove.
9. The brain puncture needle according to claim 1, characterized in that, The material of the needle sleeve (3) is metal.