Novel nerve block needle

Abstract

The utility model discloses a novel nerve block needle which comprises an injector, the bottom of the injector is connected with a connecting cylinder in a clamped mode, the bottom of the connecting cylinder is fixedly connected with a puncture needle head, the top of the injector is fixedly connected with a connecting column, a sliding groove is formed in the connecting column, and a rotary knob is arranged at the top of the injector. The length and the diameter of the puncture needle are designed according to different clinical requirements so as to adapt to nerve block operation of different parts, the catheter needle is located in the puncture needle, the front end of the catheter needle is provided with a telescopic umbrella-shaped structure, and after the puncture needle punctures a subcutaneous target area, the front end of the catheter needle stretches out, and the umbrella-shaped structure is opened. The umbrella-shaped structure is made of a flexible medical material, it is ensured that surrounding tissue cannot be injured when the catheter needle is opened, the front end of the catheter needle is round and blunt so that the risk of injury to the tissue can be further reduced, and when the catheter needle reaches a position needing blocking, blocking medicine can be evenly injected in a designated area through unfolding of the umbrella-shaped structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and particularly relates to a new type of nerve block needle. Background Art

[0002] A nerve block needle is a medical tool used to apply local anesthesia or drugs to a nerve to block the transmission of pain signals or regulate the function of the nervous system. This technique is very important in pain management and the treatment of certain types of neurological diseases. The working principle of the nerve block needle is to inject anesthetic or specific drugs near the nerve through the needle tip, thereby temporarily or continuously blocking the transmission of pain signals. This can be used to treat various pain conditions, such as acute pain, chronic pain, postherpetic neuralgia, etc.

[0003] Nerve block is a commonly used technique in anesthesia and pain management. By injecting anesthetic drugs to block nerve conduction, the effect of anesthesia or analgesia can be achieved. However, existing nerve block needles have some defects during use, such as uneven drug diffusion, which may cause damage to surrounding tissues, and difficulties in controlling the drug administration speed and dosage. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a new type of nerve block needle to solve the problems mentioned in the above background art, that is, nerve block is a commonly used technique in anesthesia and pain management. By injecting anesthetic drugs to block nerve conduction, the effect of anesthesia or analgesia can be achieved. However, existing nerve block needles have some defects during use, such as uneven drug diffusion, which may cause damage to surrounding tissues, and difficulties in controlling the drug administration speed and dosage.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A new type of nerve block needle, including a syringe, the bottom of the syringe is snap-connected with a connecting cylinder, the bottom of the connecting cylinder is fixedly connected with a puncture needle tip, the top of the syringe is fixedly connected with a connecting column, a chute is arranged inside the connecting column, a knob is arranged on the top of the syringe, screw grooves and sliding rings are respectively arranged at the upper and lower ends inside the knob, a threaded column is threadedly connected inside the screw groove, a piston is fixedly connected to the bottom of the threaded column, a connecting frame is fixedly connected to the bottom of the piston, a catheter needle is fixedly connected inside the connecting frame, elastic support pieces are evenly and fixedly connected in a circular shape at the lower end outside the catheter needle, and a flexible support piece is fixedly connected to the outside of the elastic support pieces.

[0006] Preferably, a first scale is arranged on the outside of the syringe.

[0007] Preferably, assisting plates are symmetrically and fixedly connected to the upper end outside the syringe.

[0008] Preferably, the knob and the slip ring are slidably connected to the connecting column through a chute, and anti-slip grooves are provided on the outer side of the knob.

[0009] Preferably, a second scale is provided at the lower end of the outer side of the knob, and an index groove is provided at the upper end of the outer side of the syringe.

[0010] Preferably, a limiting plate is fixedly connected to the top of the threaded column.

[0011] Preferably, an arc edge is provided at the bottom of the catheter needle.

[0012] Preferably, the puncture needle is made of stainless steel, and the elastic support piece and the flexible support piece form an umbrella-shaped structure, and the umbrella-shaped structure is made of a flexible medical material.

[0013] Compared with the prior art, the present utility model provides a novel nerve block needle, which has the following beneficial effects:

[0014] 1. By providing a novel nerve block needle in the present utility model, the puncture needle is located on the outer layer, and the front end is designed to be pointed for puncturing the skin and subcutaneous tissues. The puncture needle is made of high-strength medical stainless steel material, which has good puncture performance and durability. The length and diameter of the puncture needle are designed according to different clinical needs to adapt to nerve block operations at different parts. The catheter needle is located inside the puncture needle, and the front end is provided with a retractable umbrella-shaped structure. When the puncture needle punctures to the subcutaneous target area, the front end of the catheter needle extends out, and the umbrella-shaped structure opens. The umbrella-shaped structure is made of a flexible medical material to ensure that it will not damage the surrounding tissues when opening. The front end of the catheter needle is blunt to further reduce the risk of tissue damage. When the catheter needle reaches the part to be blocked, the blocking drug can be evenly injected in the designated area through the unfolding of the umbrella-shaped structure.

[0015] 2. By providing the first scale and the second scale in the present utility model, during the use of the nerve block needle, the injection dose can be adjusted according to the clinical needs through the provided first scale and second scale. The second scale provided on the outer side of the knob can achieve precise drug administration control and reduce the side effects caused by drug diffusion.

[0016] The parts not involved in this device are the same as or can be implemented by the prior art. The structure of the present utility model is scientific and reasonable, safe and convenient to use, and provides great help to people. Description of the Drawings

[0017] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0018] Figure 1Schematic axon side structure diagram of a new type of nerve block needle proposed by the present utility model;

[0019] Figure 2 Schematic axon side structure diagram of the other side of a new type of nerve block needle proposed by the present utility model;

[0020] Figure 3 Schematic structure diagram of the index groove of a new type of nerve block needle proposed by the present utility model;

[0021] Figure 4 Schematic structure diagram of the knob of a new type of nerve block needle proposed by the present utility model;

[0022] Figure 5 Schematic structure diagram of the connecting column of a new type of nerve block needle proposed by the present utility model;

[0023] Figure 6 Schematic structure diagram of the catheter needle of a new type of nerve block needle proposed by the present utility model;

[0024] Figure 7 Schematic structure diagram of the elastic support piece of a new type of nerve block needle proposed by the present utility model;

[0025] In the figure: syringe 1, first scale 2, connecting cylinder 3, puncture needle 4, boosting plate 5, connecting column 6, chute 7, knob 8, sliding ring 9, thread groove 10, anti-slip groove 11, second scale 12, index groove 13, threaded post 14, limiting plate 15, piston 16, connecting frame 17, catheter needle 18, arc edge 19, elastic support piece 20, flexible support piece 21. Specific implementation manners

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Please refer to Figures 1-7, the present utility model provides a technical solution: a novel nerve block needle, including a syringe 1, a connecting cylinder 3 is snap-connected to the bottom of the syringe 1, a puncture needle head 4 is fixedly connected to the bottom of the connecting cylinder 3, a connecting column 6 is fixedly connected to the top of the syringe 1, a chute 7 is arranged inside the connecting column 6, a knob 8 is arranged on the top of the syringe 1, a thread groove 10 and a sliding ring 9 are respectively arranged at the upper and lower ends inside the knob 8, a threaded column 14 is threadedly connected inside the thread groove 10, a piston 16 is fixedly connected to the bottom of the threaded column 14, a connecting frame 17 is fixedly connected to the bottom of the piston 16, a catheter needle 18 is fixedly connected inside the connecting frame 17, elastic support pieces 20 are fixedly connected in a circular and uniform manner on the lower end of the outside of the catheter needle 18, a flexible support piece 21 is fixedly connected to the outside of the elastic support pieces 20, the puncture needle is located on the outer layer, and the front end is designed to be pointed for puncturing the skin and subcutaneous tissue. The puncture needle is made of high-strength medical stainless steel material, has good puncture performance and durability. The length and diameter of the puncture needle are designed according to different clinical needs to adapt to nerve block operations in different parts. The catheter needle is located inside the puncture needle, and the front end is provided with a retractable umbrella-shaped structure. When the puncture needle punctures to the subcutaneous target area, the front end of the catheter needle extends out and the umbrella-shaped structure opens. The umbrella-shaped structure is made of flexible medical material to ensure that it will not damage the surrounding tissues when opening. The front end of the catheter needle is blunt to further reduce the risk of tissue damage. When the catheter needle reaches the part to be blocked, through the unfolding of the umbrella-shaped structure, the blocking drug can be evenly injected in the designated area.

[0028] In the present utility model, preferably, a first scale 2 is arranged on the outside of the syringe 1.

[0029] In the present utility model, preferably, assisting plates 5 are symmetrically and fixedly connected to the upper end of the outside of the syringe 1.

[0030] In the present utility model, preferably, the knob 8 and the sliding ring 9 are slidably connected to the connecting column 6 through the chute 7, and anti-slip grooves 11 are arranged on the outside of the knob 8.

[0031] In the present utility model, preferably, a second scale 12 is arranged at the lower end of the outside of the knob 8, and an index groove 13 is arranged at the upper end of the outside of the syringe 1.

[0032] In the present utility model, preferably, a limiting plate 15 is fixedly connected to the top of the threaded column 14.

[0033] In the present utility model, preferably, an arc edge 19 is arranged at the bottom of the catheter needle 18.

[0034] In the present utility model, preferably, the puncture needle head 4 is made of stainless steel material, and the elastic support pieces 20 and the flexible support piece 21 form an umbrella-shaped structure, and the umbrella-shaped structure is made of flexible medical material.

[0035] The working principle and usage process of the present utility model: When in use;

[0036] Preparation stage: First, the operator loads the blocking drug into the syringe 1 and adjusts the drug dosage through the first scale 2 and the index slot 13. The assisting plate 5 on the outer side of the syringe 1 can help the operator hold and operate the device more stably.

[0037] Puncture stage: The operator aligns the puncture needle 4 with the target puncture site. By using the high-strength medical stainless steel material of the puncture needle and applying manual force, the puncture needle penetrates the skin and subcutaneous tissue until it reaches the area near the nerve to be blocked.

[0038] Catheter needle deployment stage: When the puncture needle 4 reaches the target area, the operator rotates the knob 8, causing the threaded post 14 to move up and down in the threaded groove 10, thereby pushing the piston 16 and the connecting frame 17, and enabling the catheter needle 18 to advance forward along the inside of the puncture needle. The arc-shaped edge 19 at the bottom of the catheter needle 18 is designed to help reduce tissue damage.

[0039] Umbrella structure deployment stage: The retractable umbrella structure at the front end of the catheter needle 18 is composed of an elastic support sheet 20 and a flexible support sheet 21. When the catheter needle 18 reaches the designated position, the umbrella structure automatically unfolds under the action of the elastic support sheet 20. The flexible support sheet 21 is made of flexible medical material to ensure that it will not damage the surrounding tissues during the unfolding process.

[0040] Injection of blocking drug stage: After the umbrella structure unfolds, the operator can continue to rotate the knob 8 to precisely control the injection volume of the drug through the second scale 12. The limit plate 15 can prevent the threaded post 14 from rising excessively, ensuring the safety of the injection process. At this time, the drug is evenly injected around the target nerve through the catheter needle 18 to achieve nerve block.

[0041] Completion of injection: After the injection is completed, the operator can rotate the knob 8 to retract the catheter needle 18 into the inside of the puncture needle 4. At the same time, the elastic support sheet 20 and the flexible support sheet 21 will also contract into the inside of the puncture needle 4 under the action of the retraction of the catheter needle 18, and then slowly withdraw the puncture needle 4 to complete the entire nerve block operation.

[0042] Throughout the process, the anti-slip groove 11 on the outer side of the knob 8 provides a good grip, making the operation more stable and reliable. The nerve block needle of the present utility model realizes the accuracy and safety of the nerve block operation through precise design, effectively reducing the discomfort of the patient and the risk of complications.

[0043] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A novel nerve block needle, comprising a syringe (1), characterized in that: A connecting cylinder (3) is snap-connected to the bottom of the syringe (1), a puncture needle (4) is fixedly connected to the bottom of the connecting cylinder (3), a connecting column (6) is fixedly connected to the top of the syringe (1), a chute (7) is arranged inside the connecting column (6), a knob (8) is arranged on the top of the syringe (1), threaded grooves (10) and a sliding ring (9) are respectively arranged at the upper and lower ends inside the knob (8), a threaded column (14) is threadedly connected inside the threaded groove (10), a piston (16) is fixedly connected to the bottom of the threaded column (14), a connecting frame (17) is fixedly connected to the bottom of the piston (16), a catheter needle (18) is fixedly connected inside the connecting frame (17), elastic support pieces (20) are fixedly connected in a circular and uniform manner at the lower end of the outer side of the catheter needle (18), and a flexible support piece (21) is fixedly connected to the outer side of the elastic support piece (20).

2. The novel nerve block needle according to claim 1, characterized in that: A first scale (2) is arranged on the outer side of the syringe (1).

3. A novel nerve block needle according to claim 1, characterized in that: Assistive plates (5) are symmetrically and fixedly connected to the upper end of the outer side of the syringe (1).

4. A novel nerve block needle according to claim 1, characterized in that: The knob (8) and the sliding ring (9) are slidably connected to the connecting column (6) through the chute (7), and anti-slip grooves (11) are formed in the outer side of the knob (8).

5. A novel nerve block needle according to claim 1, characterized in that: A second scale (12) is arranged at the lower end of the outer side of the knob (8), and an index groove (13) is formed in the upper end of the outer side of the syringe (1).

6. A novel nerve block needle according to claim 1, characterized in that: A limiting plate (15) is fixedly connected to the top of the threaded column (14).

7. A novel nerve block needle according to claim 1, characterized in that: An arc edge (19) is arranged at the bottom of the catheter needle (18).

8. A novel nerve block needle according to claim 1, characterized in that: The puncture needle (4) is made of stainless steel, the elastic support pieces (20) and the flexible support piece (21) form an umbrella-shaped structure, and the umbrella-shaped structure is made of a flexible medical material.

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