A nerve block needle

Abstract

The utility model aims at providing a nerve block needle which reduces puncture needle block and facilitates control of drug entry. The utility model discloses a needle handle, a puncture needle fixedly connected with one end of the needle handle for puncture, a flow control assembly detachably connected with the other end of the needle handle for controlling drug flow, a protective sleeve detachably connected with the lower end of the needle handle, and a flow tube arranged at one end of the flow control assembly for flowing in drug. The flow control assembly comprises a connecting block detachably connected with the needle handle, a control piece slidably connected with the connecting block for controlling drug flow, and a plurality of elastic members arranged at one end of the connecting block and in top pushing cooperation with the control piece. The connecting block is formed with the flow tube for drug flow. One side of the connecting block is formed with a slot for slidable connection of the control piece. The plurality of elastic members are arranged at the bottom of the slot. The control piece is provided with a flow hole for drug to pass through. The utility model is applied to the technical field of nerve block needles.

Description

Technical Field

[0001] This utility model relates to the technical field of nerve block needles, and in particular to a nerve block needle. Background Technology

[0002] In the field of disease diagnosis and treatment, nerve block needles are widely used to treat hemiplegia, sensory disorders, joint pain, and other diseases. Furthermore, during peripheral nerve block anesthesia, nerve block needles can be used to accurately determine the anesthetic location. Ultrasound-guided nerve block needles can clearly distinguish blood vessels, nerves, muscle tissue, and the location of the puncture needle, and directly block the nerve under visual guidance. This also facilitates observation of the structures surrounding the nerve and dynamic monitoring of the anesthetic diffusion, improving the accuracy and success rate of nerve blocks and reducing damage to blood vessels and nerves related to the procedure.

[0003] When performing a nerve block, the nerve block needle needs to be inserted into the skin to reach the nerve tissue. During this process, one hand needs to hold the needle handle to control the nerve block needle as it enters the body, while the other hand controls the amount of medication flowing in. The operation is complicated and difficult, requiring the assistance of additional medical personnel. Furthermore, the needle hole of the nerve block needle is easily blocked by human tissue, preventing the medication from being injected into the nerve tissue area through the nerve block needle, thus preventing the nerve block from being performed normally. Utility Model Content

[0004] The technical problem to be solved by this invention is to overcome the shortcomings of the prior art and provide a nerve block needle that reduces puncture and needle flow obstruction and facilitates control of drug entry.

[0005] The technical solution adopted by this utility model is as follows: This utility model includes a needle handle, a puncture needle fixedly connected to one end of the needle handle for puncture, a flow control component detachably connected to the other end of the needle handle for controlling the flow of medicine, a protective sleeve detachably connected to the lower end of the needle handle, and a flow tube disposed at one end of the flow control component for the inflow of medicine. The flow control component includes a connecting block detachably connected to the needle handle, a control piece slidably connected to the connecting block for controlling the flow of medicine, and a plurality of elastic members disposed in the connecting block and pushed against the control piece. The connecting block forms a channel for the flow of medicine, and a slot is formed on one side of the connecting block for the control piece to slide. The plurality of elastic members are disposed at the bottom of the slot, and the control piece has a flow hole for the medicine to pass through.

[0006] Furthermore, limit blocks are provided on both sides of the slot, and protrusions that slide with the slot are provided on both sides of the control plate. Each protrusion corresponds to a limit block for limiting. A sliding block that slides with the side wall of the slot is formed at the rear end of the control plate.

[0007] Furthermore, two locking blocks are formed at the bottom of the needle handle, and a corresponding locking groove is formed on the upper part of the protective sleeve to cooperate with the corresponding locking blocks.

[0008] Furthermore, a connecting hole is formed in the middle of the needle handle, and a fixing cavity for the puncture needle to be fixedly connected is formed at the lower end of the connecting hole. A support block is formed in the upper part of the fixing cavity. The lower end of the support block is in close contact with the puncture needle, and the upper part of the support block is supported and engaged with the connecting block.

[0009] Furthermore, the bottom of the puncture needle is provided with a first arc surface and a second arc surface, and a buffer section is formed between the first arc surface and the second arc surface, with the first arc surface close to the puncture end of the first arc surface.

[0010] Furthermore, the side of the needle handle is formed with a gripping surface for increasing friction, and the gripping surface is formed with anti-slip texture.

[0011] The beneficial effects of this utility model are as follows: Because this utility model uses a flow control component connected to one end of the needle handle, the operator can control the opening and closing of the drug passage with one hand when the puncture needle is inserted. The structure is simple and easy to use. The drug passage can be closed by simply pressing the control plate. The end of the puncture needle forms a bullet-shaped structure with the puncture end of the puncture needle, which reduces the coagulation force with the skin and makes the needle flow smoother. It avoids the problem of large coagulation force caused by the tight wrapping of human tissue. The second arc surface forms a flow-type structure with the puncture needle, which reduces the resistance force of the human tissue wrapping and further improves the smoothness of the needle flow. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is an exploded view of this utility model;

[0014] Figure 3 yes Figure 2 A magnified view of part A in the middle;

[0015] Figure 4 yes Figure 2 A magnified view of part C in the middle;

[0016] Figure 5 This is an exploded view of the flow control component of this utility model;

[0017] Figure 6 yes Figure 5 A magnified view of part B in the middle section;

[0018] Figure 7 This is a cross-sectional view of the flow control component of this utility model;

[0019] Figure 8 This is a cross-sectional view of the needle handle of this utility model.

[0020] In the diagram: 1. Needle handle; 11. Locking block; 12. Connecting hole; 13. Fixing cavity; 14. Support block; 2. Puncture needle; 21. First arc surface; 22. Second arc surface; 23. Buffer section; 3. Flow control assembly; 31. Connecting block; 32. Control plate; 33. Elastic element; 34. Slot; 35. Flow hole; 36. Limiting block; 37. Protrusion; 38. Sliding block; 39. Connecting channel; 4. Protective sleeve; 41. Locking groove; 5. Flow tube. Detailed Implementation

[0021] like Figures 1 to 8 As shown, in this embodiment, the present invention includes a needle handle 1, a puncture needle 2 fixedly connected to one end of the needle handle 1 for puncture, a flow control component 3 detachably connected to the other end of the needle handle 1 for controlling drug flow, a protective sleeve 4 detachably connected to the lower end of the needle handle 1, and a flow tube 5 disposed at one end of the flow control component 3 for drug inflow. The flow control component 3 includes a connecting block 31 detachably connected to the needle handle 1, a control piece 32 slidably connected to the connecting block 31 for controlling drug flow, and a plurality of components disposed on the connecting block 31. The connecting block 31 has an elastic element 33 that pushes against the control piece 32. The connecting block 31 forms a connecting channel 39 for drug flow. One side of the connecting block 31 has a slot 34 for sliding connection of the control piece 32. Several elastic elements 33 are disposed at the bottom of the slot 34. The control piece 32 has a flow hole 35 for drug to pass through. The elastic element 33 is a spring. Through the elastic force of the elastic element 33, the control piece 32 is pushed against the limiting block 36 of the slot 34, so that the flow hole 35 coincides with the connecting channel 39, and the drug passage is kept stable. The flow control component 3 is connected to one end of the needle handle 1. When the puncture needle 2 is inserted, the operator can control the opening and closing of the drug passage with one hand. The structure is simple and easy to use. The drug passage can be closed by simply pressing the control plate 32. The end of the puncture needle 2 forms a first arc surface 21, which forms a bullet-shaped structure with the puncture end of the puncture needle 2. This reduces the coagulation force with the skin and makes the needle flow smoother. It avoids the problem of large coagulation force caused by the tight wrapping of human tissue. The second arc surface 22 forms a flow-type structure with the puncture needle 2, which reduces the resistance force of human tissue wrapping and further improves the smoothness of needle flow.

[0022] In this embodiment, limit blocks 36 are provided on both side walls of the slot 34, and protrusions 37 that slide and engage with the slot 34 are provided on both sides of the control piece 32. Each protrusion 37 corresponds to a limit block 36 for limiting engagement. A sliding block 38 is formed at the rear end of the control piece 32 that slides against the side wall of the slot 34. Both the limit blocks 36 and the protrusions 37 are provided with inclined surfaces. The inclined surface design facilitates the control piece 32 to snap into the slot 34. A limit surface is formed on the other side of the inclined surface. The limit surface of the protrusion 37 abuts against the limit surface of the limit block 36 to prevent the control piece 32 from flying out.

[0023] In this embodiment, two locking blocks 11 are formed at the bottom of the needle handle 1, and a corresponding slot 41 is formed on the upper part of the protective sleeve 4 to cooperate with the corresponding locking blocks 11. The locking blocks 11 and slots 41 are designed so that the protective sleeve 4 can be quickly locked and fixed, making it easy for medical staff to remove the protective sleeve 4 with one hand.

[0024] In this embodiment, a connecting hole 12 is formed in the middle of the needle handle 1, and a fixing cavity 13 for the fixed connection of the puncture needle 2 is formed at the lower end of the connecting hole 12. A support block 14 is formed at the upper part of the fixing cavity 13. The lower end of the support block 14 is in close contact with the puncture needle 2, and the upper part of the support block 14 is supported and engaged with the connecting block 31. The support block 14 is designed to provide stable support while being connected to the connecting block 31. The lower end of the support block 14 compresses and stabilizes the puncture of the puncture needle 2 and the drug infusion process.

[0025] In this embodiment, the bottom of the puncture needle 2 is provided with a first arc surface 21 and a second arc surface 22, and a buffer section 23 is formed between the first arc surface 21 and the second arc surface 22. The first arc surface 21 is close to the puncture end of the first arc surface 21. The end of the puncture needle 2 forms a bullet-shaped structure with the first arc surface 21 and the puncture end of the puncture needle 2, which reduces the coagulation force with the skin, making the needle flow smoother and avoiding the problem of large coagulation force caused by the tight wrapping of human tissue. The second arc surface 22 forms a flow-type structure with the puncture needle 2, which reduces the resistance force of human tissue wrapping and further improves the smoothness of needle flow.

[0026] In this embodiment, the side of the needle handle 1 is formed with a gripping surface for increasing friction, and the gripping surface is formed with anti-slip texture. The gripping surface is made of rubber to ensure that medical personnel can increase the contact area and improve friction during use, thus forming a stable gripping effect.

[0027] The working principle of this utility model:

[0028] During puncture, the medical staff's hand contacts the holding surface, and the tip of the puncture needle 2 pierces the skin. The first arc surface 21 and the puncture tip of the puncture needle 2 form a bullet-shaped structure to smoothly enter the human body. The second arc surface 22 and the puncture needle 2 form a flowing structure to further reduce the resistance of human tissue. During the needle insertion process, the drug pathway is kept closed by pressing the control plate 32. When the drug release position is reached, the control plate 32 is released, and the drug enters the patient's body along the connecting channel 39.

[0029] Although the embodiments of this utility model are described with reference to actual solutions, they do not constitute a limitation on the meaning of this utility model. For those skilled in the art, modifications to the implementation schemes and combinations with other schemes based on this specification are obvious.

Claims

1. A nerve block needle, characterized in that: The device includes a needle handle (1), a puncture needle (2) fixedly connected to one end of the needle handle (1) for puncture, a flow control assembly (3) detachably connected to the other end of the needle handle (1) for controlling drug flow, a protective sleeve (4) detachably connected to the lower end of the needle handle (1), and a flow tube (5) disposed at one end of the flow control assembly (3) for drug inflow. The flow control assembly (3) includes a connecting block (31) detachably connected to the needle handle (1), and a slidably connected component to the connecting block (31). The control piece (32) for controlling drug flow and a plurality of elastic elements (33) disposed in the connecting block (31) and pushed against the control piece (32). The connecting block (31) forms a connecting channel (39) for drug flow. A slot (34) is formed on one side of the connecting block (31) for sliding connection of the control piece (32). The plurality of elastic elements (33) are disposed at the bottom of the slot (34). The control piece (32) has a flow hole (35) for drug to pass through.

2. The nerve block needle according to claim 1, characterized in that: Limiting blocks (36) are provided on both sides of the slot (34), and protrusions (37) that slide with the slot (34) are provided on both sides of the control piece (32). Each protrusion (37) is limited to the corresponding limiting block (36), and a sliding block (38) that slides with the side wall of the slot (34) is formed at the rear end of the control piece (32).

3. The nerve block needle according to claim 1, characterized in that: The bottom of the needle handle (1) has two locking blocks (11), and the upper part of the protective sleeve (4) has a corresponding slot (41) that mates with the corresponding locking block (11).

4. The nerve block needle according to claim 1, characterized in that: A connecting hole (12) is formed in the middle of the needle handle (1). A fixing cavity (13) for the puncture needle (2) to be fixedly connected is formed at the lower end of the connecting hole (12). A support block (14) is formed at the upper part of the fixing cavity (13). The lower end of the support block (14) is in close contact with the puncture needle (2), and the upper part of the support block (14) is supported and cooperated with the connecting block (31).

5. A nerve block needle according to claim 1, characterized in that: The bottom of the puncture needle (2) is provided with a first arc surface (21) and a second arc surface (22), and a buffer section (23) is formed between the first arc surface (21) and the second arc surface (22). The first arc surface (21) is close to the puncture end of the first arc surface (21).

6. The nerve block needle according to claim 1, characterized in that: The side of the needle handle (1) is formed with a gripping surface for increasing friction, and the gripping surface is formed with anti-slip texture.

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