Jet flow puncture needle for articular cavity

Abstract

The utility model belongs to the field of medical supplies, and discloses an articular cavity jet flow puncture needle which comprises a needle body. The needle body comprises a needle tube and a needle tip which are coaxially arranged, the needle tip is fixed at one end of the needle tube, a cavity which is coaxially arranged with the needle tube is formed in the needle body, and the cavity penetrates through the needle tube and the needle tip; the diameter of the outer side peripheral wall of the needle tube is smaller than that of the outer side peripheral wall of the needle tip, the needle tube is slidably sleeved with an insulating film sleeve which is coaxially arranged, the inner side peripheral wall of the insulating film sleeve is attached to the outer side peripheral wall of the needle tube, and the diameter of the outer side peripheral wall of the insulating film sleeve is equal to that of the outer side peripheral wall of the needle tip; the needle tube far away from the needle tip end is detachably connected with a limiting ring which is coaxially arranged; and when the insulating film sleeve is damaged, the damaged insulating film sleeve can be disassembled and replaced only by disassembling and taking down the limiting ring, so that the maintenance convenience and the operation flexibility are improved.

Description

Technical Field

[0001] This utility model belongs to the field of medical supplies, specifically relating to a joint cavity jet puncture needle. Background Technology

[0002] For example, Chinese patent application number CN202023123285.8 relates to a low-temperature plasma joint cavity puncture jet device, which consists of a gas delivery device and a plasma generator. The plasma generator includes a handle, a high-voltage electrode, a metal needle-shaped shell, and a high-voltage power supply. The gas delivery device includes a gas cylinder, a gas valve, and a gas flow meter. The gas delivery device and the plasma generator are connected to each other by a gas conduit, and the connection is sealed to ensure no gas leakage during delivery. This device can effectively inject low-temperature plasma into the joint cavity, thereby achieving anti-inflammatory, pain relief, healing promotion, or other therapeutic purposes.

[0003] However, since the puncture needle is made of metal, the microcurrent may cause damage to the skin and tissue during the puncture process. To solve this problem, the existing technology usually coats the surface of the puncture needle with an insulating film. However, if the insulating film on the surface of the puncture needle is scratched or damaged during use, the insulating film on the surface of the puncture needle cannot be replaced because the coating method cannot be used. The damaged puncture needle can only be recycled and recoated later. Therefore, the existing technology has the problem of poor flexibility in repairing and replacing the insulating film on the surface of the puncture needle. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a joint cavity jet puncture needle, which solves the problem of poor flexibility in repairing and replacing the insulating film on the surface of the puncture needle in the prior art.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A joint cavity jet puncture needle, comprising a needle body;

[0007] The needle body includes a needle tube and a needle tip placed coaxially. The needle tip is fixed to one end of the needle tube. A cavity is opened inside the needle body that is placed coaxially with the needle tube. The cavity passes through the needle tube and the needle tip.

[0008] The diameter of the outer peripheral wall of the needle tube is smaller than the diameter of the outer peripheral wall of the needle tip. An insulating film sleeve is slidably mounted on the needle tube and placed coaxially. The inner peripheral wall of the insulating film sleeve is in contact with the outer peripheral wall of the needle tube. The diameter of the outer peripheral wall of the insulating film sleeve is equal to the diameter of the outer peripheral wall of the needle tip.

[0009] The needle tube is detachably connected to a coaxially placed limiting ring away from the needle tip. The outer diameter of the limiting ring is larger than the outer diameter of the needle tube. The two ends of the insulating film sleeve are respectively attached to the limiting ring and the needle tip.

[0010] The principle and effect of the above technical solution are as follows:

[0011] The exposed needle tip does not affect the normal discharge operation of low-temperature plasma joint puncture. By covering the needle tube with an insulating film sleeve, the damage of the current to the puncture site during the discharge process is reduced. Furthermore, since the insulating film sleeve is slidably connected to the needle tube, when the insulating film sleeve is damaged, it can be disassembled and replaced simply by removing the limiting ring, which improves the convenience of maintenance and the flexibility of operation.

[0012] A groove is provided on the outer peripheral wall of the needle tube. The groove is placed in the same direction as the needle tube and passes through both ends of the needle tube. A protrusion is fixed on the inner peripheral wall of the insulating film sleeve. The protrusion is slidably connected to the groove.

[0013] Multiple convex strips and sliding grooves are provided. The multiple sliding grooves are evenly distributed in a ring around the central axis of the needle tube. The number of convex strips and sliding grooves are equal and correspond one-to-one. The convex strips are all slidably connected in the corresponding sliding grooves.

[0014] A cylindrical ring is fixedly connected to the limiting ring near the needle tube end. The cylindrical ring and the needle tube are placed on the same axis. The cylindrical ring is slidably sleeved on the outer peripheral wall of the needle tube away from the needle tip. The insulating film sleeve away from the needle tip is in contact with the end of the cylindrical ring away from the limiting ring.

[0015] A ring magnet is fixed to the end of the syringe near the limiting ring, and the limiting ring is made of ferromagnetic material;

[0016] The outer peripheral wall of the needle tube away from the needle tip has a spirally distributed threaded groove, and the inner peripheral wall of the cylindrical ring has threaded teeth that match the threaded groove. The cylindrical ring is threadedly connected to the needle tube.

[0017] Multiple anti-slip strips are fixed on the outer peripheral wall of the limiting ring in a ring-shaped and uniformly distributed manner around the central axis of the needle tube.

[0018] The explanations of the nouns, conjunctions, or adjectives used in the above technical solutions are as follows:

[0019] Fixed connection: refers to the process of connecting two separate profiles or parts into a complex part or component using fasteners such as screws, bolts and rivets.

[0020] Sliding connection: Two objects are in contact but not fixed, and they can slide relative to each other.

[0021] The beneficial effects of this utility model are:

[0022] 1. The exposed needle tip does not affect the normal discharge operation of low-temperature plasma joint puncture. By covering the needle tube with an insulating film sleeve, the damage of the current to the puncture site during the discharge process is reduced. Since the insulating film sleeve is slidably connected to the needle tube, when the insulating film sleeve is damaged, only the limiting ring needs to be removed to disassemble and replace the damaged insulating film sleeve, which improves the convenience of maintenance and the flexibility of operation.

[0023] Meanwhile, since the outer peripheral wall diameter of the insulating film sleeve is equal to the outer peripheral diameter of the needle tip, the splicing part between the needle tip and the insulating film sleeve can be smooth, avoiding a height difference between the insulating film sleeve and the needle tip, and preventing greater harm to the human body during puncture.

[0024] 2. The combination of grooves and protrusions improves the stability of the connection between the insulating film sleeve and the needle tube, while preventing the insulating film sleeve from rotating during puncture. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the needle tube portion of this utility model;

[0028] Figure 3 This is a schematic diagram of the insulating film sleeve structure of this utility model;

[0029] Figure 4 This is a partial structural diagram of the limiting ring and needle tube in Embodiment 1 of this utility model;

[0030] Figure 5 This is a partial structural diagram of the limiting ring and needle tube in Embodiment 2 of this utility model;

[0031] Figure 6 This is a schematic diagram of the cylindrical ring portion of Embodiment 2 of this utility model. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0033] This combination Figures 1 to 6 This document describes an embodiment of a joint cavity jet puncture needle. Specifically, the joint cavity jet puncture needle is constructed as a split structure, comprising a needle tube 101, a needle tip 102, an insulating film sleeve 200, and a limiting ring 300. The exposed needle tip 102 does not affect the normal discharge operation of the low-temperature plasma joint puncture. By covering the needle tube 101 with the insulating film sleeve 200, damage to the puncture site by the current during the discharge process is reduced. Furthermore, since the insulating film sleeve 200 is slidably connected to the needle tube 101, when the insulating film sleeve 200 is damaged, it can be disassembled and replaced simply by removing the limiting ring 300, thus improving maintenance convenience and operational flexibility.

[0034] Please refer to Figures 1 to 6 A joint cavity jet puncture needle, comprising a needle body;

[0035] The needle body includes a needle tube 101 and a needle tip 102 placed coaxially. The needle tip 102 is fixed to one end of the needle tube 101. A cavity 103 is opened inside the needle body and is placed coaxially with the needle tube 101. The cavity 103 passes through the needle tube 101 and the needle tip 102.

[0036] The diameter of the outer peripheral wall of the needle tube 101 is smaller than the diameter of the outer peripheral wall of the needle tip 102. An insulating film sleeve 200 is slidably sleeved on the needle tube 101 and placed coaxially. The inner peripheral wall of the insulating film sleeve 200 is in contact with the outer peripheral wall of the needle tube 101. The diameter of the outer peripheral wall of the insulating film sleeve 200 is equal to the diameter of the outer peripheral wall of the needle tip 102.

[0037] The end of the needle tube 101 away from the needle tip 102 is detachably connected to a limiting ring 300 placed on the same axis. The outer diameter of the limiting ring 300 is larger than the outer diameter of the peripheral wall of the needle tube 101. The two ends of the insulating film sleeve 200 are respectively attached to the limiting ring 300 and the needle tip 102.

[0038] Preferably, the needle 101 can be made of corrosion-resistant stainless steel, and the surface of the needle 101 can be polished to ensure smoothness and durability, so as to avoid causing greater damage to the patient's skin during puncture.

[0039] Preferably, the insulating film sleeve 200 can be made of insulating materials such as polymer or rubber to avoid current leakage. The outer surface may be treated with a special coating to improve wear resistance. At the same time, the outer peripheral wall of the insulating film sleeve 200 should be smooth and flat.

[0040] The exposed needle tip 102 does not affect the normal discharge operation of low-temperature plasma joint puncture. By covering the needle tube 101 with an insulating film sleeve 200, the damage of the current to the puncture site during the discharge process is reduced. Since the insulating film sleeve 200 is slidably connected to the needle tube 101, when the insulating film sleeve 200 is damaged, only the limiting ring 300 needs to be removed to disassemble and replace the damaged insulating film sleeve 200, which improves the convenience of maintenance and the flexibility of operation.

[0041] Meanwhile, since the outer peripheral diameter of the insulating film sleeve 200 is equal to the outer diameter of the needle tip 102, the splicing part between the needle tip 102 and the insulating film sleeve 200 can be smooth, avoiding a height difference between the insulating film sleeve 200 and the needle, and preventing greater harm to the human body during puncture.

[0042] A groove 1011 is provided on the outer peripheral wall of the needle tube 101. The groove 1011 is placed coaxially with the needle tube 101 and passes through both ends of the needle tube 101. A protrusion 201 is fixed on the inner peripheral wall of the insulating film sleeve 200. The protrusion 201 is slidably connected with the groove 1011. The groove 1011 and the protrusion 201 are designed to improve the stability of the connection between the insulating film sleeve 200 and the needle tube 101, and at the same time prevent the insulating film sleeve 200 from rotating during puncture.

[0043] Multiple convex strips 201 and multiple sliding grooves 1011 are provided. The multiple sliding grooves 1011 are evenly distributed in a ring around the central axis of the needle tube 101. The number of convex strips 201 and sliding grooves 1011 are equal and correspond one-to-one. The convex strips 201 are all slidably connected in the corresponding sliding grooves 1011; this further improves the stability of the connection between the insulating film sleeve 200 and the needle tube 101.

[0044] A cylindrical ring 400 is fixedly connected to the end of the limiting ring 300 near the needle tube 101. The cylindrical ring 400 and the needle tube 101 are placed coaxially. The cylindrical ring 400 is slidably sleeved on the outer peripheral wall of the end of the needle tube 101 away from the needle tip 102. The end of the insulating film sleeve 200 away from the needle tip 102 is in contact with the end of the cylindrical ring 400 away from the limiting ring 300. This facilitates the positioning and installation of the limiting ring 300 and the needle tube 101.

[0045] This application provides two alternative embodiments for the connection between the limiting ring 300 and the needle tube 101;

[0046] Example 1:

[0047] A ring magnet 500 is fixed to the end of the needle tube 101 near the limiting ring 300. The limiting ring 300 is made of ferromagnetic material. The magnetic attraction between the ring magnet 500 and the limiting ring 300 enables a detachable connection between the needle tube 101 and the limiting ring 300, so as to limit and fix the insulating film sleeve 200 and prevent the insulating film sleeve 200 from sliding along the axial direction of the needle tube 101.

[0048] Example 2:

[0049] The outer peripheral wall of the needle tube 101 away from the needle tip 102 is provided with a spirally distributed threaded groove 1012, and the inner peripheral wall of the cylindrical ring 400 is provided with threaded teeth 401 that are adapted to the threaded groove 1012. The cylindrical ring 400 is threadedly connected to the needle tube 101. The threaded engagement between the threaded teeth 401 and the threaded groove 1012 enables the detachable connection between the cylindrical ring 400 and the limiting ring 300 and the needle tube 101.

[0050] Multiple anti-slip strips 301 are fixed on the outer peripheral wall of the limiting ring 300, which are evenly distributed in a ring around the central axis of the needle tube 101; the anti-slip strips 301 are provided to facilitate pulling or rotating the limiting ring 300.

[0051] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims of this utility model.

Claims

1. A joint cavity jet puncture needle, comprising a needle body, characterized in that: The needle body includes a needle tube (101) and a needle tip (102) placed on the same axis. The needle tip (102) is fixed to one end of the needle tube (101). A cavity (103) is opened inside the needle body and is placed on the same axis as the needle tube (101). The cavity (103) passes through the needle tube (101) and the needle tip (102). The diameter of the outer peripheral wall of the needle tube (101) is smaller than the diameter of the outer peripheral wall of the needle tip (102). An insulating film sleeve (200) is slidably sleeved on the needle tube (101) and placed coaxially. The inner peripheral wall of the insulating film sleeve (200) is in contact with the outer peripheral wall of the needle tube (101). The diameter of the outer peripheral wall of the insulating film sleeve (200) is equal to the diameter of the outer peripheral wall of the needle tip (102). The end of the needle tube (101) away from the needle tip (102) is detachably connected to a limiting ring (300) placed on the same axis. The outer diameter of the limiting ring (300) is larger than the outer diameter of the peripheral wall of the needle tube (101). The two ends of the insulating film sleeve (200) are respectively attached to the limiting ring (300) and the needle tip (102).

2. The intra-articular jet puncture needle according to claim 1, characterized in that, A groove (1011) is provided on the outer peripheral wall of the needle tube (101). The groove (1011) is placed coaxially with the needle tube (101) and the groove (1011) passes through both ends of the needle tube (101). A protrusion (201) is fixed on the inner peripheral wall of the insulating film sleeve (200). The protrusion (201) is slidably connected to the groove (1011).

3. The intra-articular jet puncture needle according to claim 2, characterized in that, Multiple convex strips (201) and multiple sliding grooves (1011) are provided. Multiple sliding grooves (1011) are evenly distributed in a ring around the central axis of the needle tube (101). The number of convex strips (201) and sliding grooves (1011) are equal and correspond one-to-one. The convex strips (201) are all slidably connected in the corresponding sliding grooves (1011).

4. The intra-articular jet puncture needle according to claim 3, characterized in that, A cylindrical ring (400) is fixed near the end of the needle tube (101) of the limiting ring (300). The cylindrical ring (400) and the needle tube (101) are placed on the same axis. The cylindrical ring (400) is slidably sleeved on the outer peripheral wall of the end of the needle tube (101) away from the needle tip (102). The end of the insulating film sleeve (200) away from the needle tip (102) is in contact with the end of the cylindrical ring (400) away from the limiting ring (300).

5. The intra-articular jet puncture needle according to claim 4, characterized in that, A ring magnet (500) is fixed to the end of the syringe (101) near the limiting ring (300), and the limiting ring (300) is made of ferromagnetic material.

6. The intra-articular jet puncture needle according to claim 4, characterized in that, The needle tube (101) has a spirally distributed threaded groove (1012) on the outer peripheral wall away from the needle tip (102), and the inner peripheral wall of the cylindrical ring (400) has threaded teeth (401) that are compatible with the threaded groove (1012). The cylindrical ring (400) is threadedly connected to the needle tube (101).

7. The intra-articular jet puncture needle according to claim 5 or 6, characterized in that, Multiple anti-slip strips (301) are fixed on the outer peripheral wall of the limiting ring (300) in a ring-shaped and uniformly distributed manner around the central axis of the needle tube (101).

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