Adjustable puncture needle

Abstract

The utility model relates to an adjustable puncture needle which comprises a connecting plug, a driving assembly, an adjusting assembly, a connecting rod and a needle tube. One end of the driving assembly is rotatably arranged on the connecting plug, and the other end is rotatably connected with one end of the adjusting assembly; when the driving assembly rotates, driving force is provided for the adjusting assembly; the needle tube is fixedly arranged at the other end of the adjusting assembly, and a connecting rod is arranged between the connecting plug and the adjusting assembly; the adjusting assembly comprises a shell, a gear, a lead screw, a nut and a linkage rod. One end of the shell is rotationally arranged on the driving assembly, the other end of the shell is fixedly provided with the needle tube, a gear is rotationally arranged in the shell, a lead screw is coaxially fixed to an output shaft of the gear, a nut is arranged on the lead screw in a threaded connection mode, and the nut is fixedly connected with the linkage rod. When the puncture needle is used for treatment and extraction of effective components, fine control can be achieved, extraction efficiency is improved, and meanwhile extraction controllability is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and specifically relates to an adjustable puncture needle. Background Technology

[0002] A puncture needle is a medical device used to perform puncture procedures inside the human or animal body to obtain tissue samples, inject drugs, or perform other treatments. It is typically made of metal or plastic, with a specific length and diameter, as well as different shapes and tip designs to suit various puncture sites and purposes. Using a puncture needle requires strict aseptic technique and specialized medical skills to ensure the safety and effectiveness of the procedure. The physician will select the appropriate puncture needle based on the patient's specific condition and perform necessary disinfection and preparation. During the puncture, the physician needs to accurately control the angle and depth of the puncture to avoid damage to surrounding tissues. Puncture needles have wide applications in medical diagnosis and treatment, such as bone marrow aspiration, joint aspiration, thoracentesis, peritoneal puncture, and tumor biopsy.

[0003] Under current technology, the extraction valve of the puncture needle is fixed and cannot be adjusted during use, which makes it impossible to achieve precise control when extracting effective components for treatment, resulting in low extraction efficiency and uncontrollability.

[0004] Therefore, it is necessary to provide an adjustable puncture needle to solve the problems mentioned in the background art. Utility Model Content

[0005] To achieve the above objectives, this utility model provides the following technical solution: an adjustable puncture needle, comprising: a connector, a drive assembly, an adjustment assembly, a connecting rod, and a needle tube;

[0006] One end of the driving component is rotatably mounted on the connector, and the other end is rotatably connected to one end of the adjusting component; when the driving component rotates, it provides driving force to the adjusting component; the needle is fixedly mounted on the other end of the adjusting component, and a connecting rod is provided between the connector and the adjusting component;

[0007] The adjustment assembly includes: a housing, a gear, a lead screw, a nut, and a linkage rod;

[0008] One end of the housing is rotatably mounted on the drive assembly, and the other end is fixedly mounted on the needle tube. The gear is rotatably mounted inside the housing. The output shaft of the gear is coaxially fixed to the lead screw. A nut is threadedly connected to the lead screw, and the nut is fixedly connected to the linkage rod.

[0009] As a further improvement of this utility model, the adjusting component also includes a limiting rod, which is fixedly disposed inside the housing, and the nut is slidably disposed on the limiting rod to prevent the nut from rotating.

[0010] As a further improvement of this utility model, the drive assembly includes: a knob, a connecting ring, and a toothed ring;

[0011] The knob is rotated between the connector and the housing. One end of the connecting ring is coaxially fixed at one end of the knob near the housing. The other end of the connecting ring is coaxially provided with the toothed ring, which meshes with the gear.

[0012] As a further improvement of this utility model, two extraction valve ports are provided through the end of the needle tube near the needle tip, and an opening adjustment element is slidably arranged on the inner surface of the two extraction valve ports.

[0013] As a further improvement of this utility model, the opening adjustment component includes: a connecting rod and an adjusting cylinder;

[0014] One end of the connecting rod is connected to the linkage rod, and the other end is connected to the adjusting cylinder, which is slidably mounted on the extraction valve port.

[0015] As a further improvement of this utility model, anti-slip protrusions are provided on the surface of the knob.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] When the needle extraction rate needs to be adjusted during treatment, the gear is rotated by rotating the drive assembly. When the gear rotates, the lead screw rotates synchronously. The rotation of the lead screw causes the nut to move relative to the housing under the action of the limit rod. During the movement of the nut, the needle extraction opening and closing degree is adjusted by the linkage rod, thereby improving the extraction efficiency.

[0018] Rotating the drive assembly clockwise (or counterclockwise) moves the lead screw drive nut upward, increasing the needle's extraction opening and closing degree, thereby improving the rapid extraction of effective components from the treatment area; rotating the drive assembly counterclockwise (or clockwise) moves the lead screw drive nut downward, decreasing the needle's extraction opening and closing degree, thereby reducing the extraction rate, improving the fine extraction of effective components from the treatment area, and avoiding over-extraction or extraction of useless components. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of an adjustable puncture needle.

[0020] Figure 2 This is a schematic diagram of the internal cross-section of an adjustable puncture needle;

[0021] Figure 3 This is a schematic diagram of an adjustable puncture needle drive assembly.

[0022] Figure 4 This is a schematic diagram of an adjustable puncture needle adjustment component.

[0023] Figure 5 This is a schematic diagram of an adjustable puncture needle tube.

[0024] The components are as follows: 1. Connector; 2. Drive assembly; 21. Knob; 22. Connecting ring; 23. Gear ring; 3. Adjustment assembly; 31. Housing; 32. Gear; 33. Lead screw; 34. Limiting rod; 35. Nut; 36. Linkage rod; 4. Connecting rod; 5. Needle tube; 6. Extraction valve port; 7. Opening adjustment component; 71. Connecting rod; 72. Adjustment cylinder. Detailed Implementation

[0025] See Figures 1 to 5 As shown, an adjustable puncture needle is characterized by comprising: a connector 1, a drive assembly 2, an adjustment assembly 3, a connecting rod 4, and a needle tube 5;

[0026] One end of the driving component 2 is rotatably mounted on the connector 1, and the other end is rotatably connected to one end of the adjusting component 3; when the driving component 2 rotates, it provides driving force to the adjusting component 3; the needle tube 5 is fixedly mounted on the other end of the adjusting component 3, and a connecting rod 4 is provided between the connector 1 and the adjusting component 3;

[0027] The adjustment component 3 includes: a housing 31, a gear 32, a lead screw 33, a nut 35, and a linkage rod 36;

[0028] One end of the housing 31 is rotatably mounted on the drive assembly 2, and the other end is fixedly mounted on the needle tube 5. The gear 32 is rotatably mounted inside the housing 31. The output shaft of the gear 32 is coaxially fixed to the lead screw 33. A nut 35 is threadedly connected to the lead screw 33, and the nut 35 is fixedly connected to the linkage rod 36.

[0029] like Figure 1 , Figure 3 , Figure 4 As shown, the present invention also includes: the adjusting component 3 further includes a limiting rod 34, the limiting rod 34 is fixedly disposed in the housing 31, and the nut 35 is slidably disposed on the limiting rod 34 to prevent the nut 35 from rotating;

[0030] In use, the device is connected via connector 1. After connection, needle 5 is inserted into the treatment area. Once needle 5 reaches the treatment area, the required material is extracted. If the extraction rate of needle 5 needs to be adjusted during treatment, the drive assembly 2 is rotated to rotate gear 32. When gear 32 rotates, lead screw 33 rotates synchronously. The rotation of lead screw 33 causes nut 35 to move relative to housing 31 under the action of limit rod 34. During the movement of nut 35, the extraction opening and closing degree of needle 5 is adjusted via linkage rod 36.

[0031] When necessary, rotating the drive assembly 2 clockwise (or counterclockwise) causes the lead screw 33 to drive the nut upward, thereby increasing the extraction opening and closing degree of the needle tube 5 and improving the rapid extraction of effective components from the treatment area; rotating the drive assembly 2 counterclockwise (or clockwise) causes the lead screw 33 to drive the nut downward, thereby decreasing the extraction opening and closing degree of the needle tube 5 and reducing the extraction rate, improving the fine extraction of effective components from the treatment area, and avoiding over-extraction or extraction of useless components.

[0032] like Figure 3 As shown, the present invention also includes: the drive assembly 2 includes: a knob 21, a connecting ring 22, and a toothed ring 23;

[0033] The knob 21 is rotatably positioned between the connector 1 and the housing 31. One end of the connecting ring 22 is coaxially fixed at one end of the knob 21 near the housing 31. The other end of the connecting ring 22 is coaxially provided with the toothed ring 23, which meshes with the gear 32. Anti-slip protrusions are provided on the surface of the knob 21.

[0034] Rotating the knob 21 causes the connecting ring 22 to rotate. During the rotation of the connecting ring 22, the gear 32 rotates through the gear ring 23, which in turn causes the lead screw 33 to rotate. This causes the nut 35 to slide under the action of the limit rod 34, so as to control and adjust the extraction efficiency of the needle tube 5 according to the treatment extraction requirements.

[0035] like Figure 5 As shown, this utility model also includes: two extraction valve ports 6 are provided through the needle tube 5 near the needle tip, and an opening adjustment component 7 is slidably arranged on the inner surface of the two extraction valve ports 6; the opening adjustment component 7 includes: a connecting rod 71 and an adjusting cylinder 72; one end of the connecting rod 71 is connected to the linkage rod 36, and the other end is connected to the adjusting cylinder 72, and the adjusting cylinder 72 is slidably arranged on the extraction valve ports 6.

[0036] When the linkage rod 36 moves, the connecting rod 71 moves synchronously with it, thereby causing the adjusting cylinder 72 to slide inside the needle tube 5. That is, the opening and closing angle of the extraction valve port 6 is controlled by the sliding of the adjusting cylinder 72, which adjusts the extraction efficiency of the effective ingredients in the treatment area.

[0037] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be primarily defined by the scope of the claims.

Claims

1. An adjustable puncture needle, characterized in that: include: Connector (1), drive assembly (2), adjustment assembly (3), connecting rod (4), needle tube (5); One end of the drive assembly (2) is rotatably mounted on the connector (1), and the other end is rotatably connected to one end of the adjustment assembly (3); when the drive assembly (2) rotates, it provides driving force to the adjustment assembly (3); the needle tube (5) is fixedly mounted on the other end of the adjustment assembly (3), and a connecting rod (4) is provided between the connector (1) and the adjustment assembly (3); The adjustment component (3) includes: a housing (31), a gear (32), a lead screw (33), a nut (35), and a linkage rod (36); One end of the housing (31) is rotatably mounted on the drive assembly (2), and the other end is fixedly mounted on the needle tube (5). The gear (32) is rotatably mounted inside the housing (31). The output shaft of the gear (32) is coaxially fixed to the lead screw (33). A nut (35) is threadedly connected to the lead screw (33), and the nut (35) is fixedly connected to the linkage rod (36).

2. The adjustable puncture needle according to claim 1, characterized in that: The adjustment assembly (3) also includes a limiting rod (34), which is fixedly disposed inside the housing (31), and the nut (35) is slidably disposed on the limiting rod (34) to prevent the nut (35) from rotating.

3. An adjustable puncture needle according to claim 1, characterized in that: The drive assembly (2) includes: a knob (21), a connecting ring (22), and a toothed ring (23); The knob (21) is rotated between the connector (1) and the housing (31). One end of the connecting ring (22) is coaxially fixed at one end of the knob (21) near the housing (31). The other end of the connecting ring (22) is coaxially provided with the gear ring (23), which meshes with the gear (32).

4. An adjustable puncture needle according to claim 1, characterized in that: Two extraction valve ports (6) are provided through the end of the needle tube (5) near the needle tip, and an opening adjustment element (7) is slidably provided on the inner surface of the two extraction valve ports (6).

5. An adjustable puncture needle according to claim 4, characterized in that: The opening adjustment component (7) includes: a connecting rod (71) and an adjusting cylinder (72); One end of the connecting rod (71) is connected to the linkage rod (36), and the other end is connected to the adjusting cylinder (72). The adjusting cylinder (72) is slidably disposed on the extraction valve port (6).

6. An adjustable puncture needle according to claim 3, characterized in that: Anti-slip protrusions are provided on the surface of the knob (21).

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