Biopsy rotary cutting needle gas circuit control device with anti-falling structure

Abstract

The utility model relates to a biopsy rotary cutting needle gas circuit control device with an anti-drop structure, which comprises a plug board arranged on rotary cutting equipment and a gas circuit control valve arranged in the plug board, the whole plug board is cylindrical, the inside of the plug board is hollow, the gas circuit control valve is inserted into the plug board, and the anti-drop structure is arranged on the plug board. An air outlet connector connected with an upper air path and a lower air path of a biopsy rotary cutting needle is arranged at the bottom of the inserting plate, an air inlet connector connected with a negative pressure system of a rotary cutting system is arranged on the side body of the inserting plate, the air outlet connector and the air inlet connector are controlled to be opened and closed through an air path control valve, and a pressure relief pipeline is further arranged on the opposite side of the air inlet connector. The negative pressure between the two connectors disappears by opening the pressure relief pipeline, and a clamping groove is further formed in the inserting plate and used for being connected with an air path control valve in a clamping mode. The utility model has the advantages of simple structure, practicability, convenience, rapidness, safety, reliability and the like.

Description

Technical Field

[0001] This utility model belongs to the field of biopsy cutting needle technology, specifically relating to a biopsy cutting needle air circuit control device with an anti-detachment structure. Background Technology

[0002] A disposable biopsy cutting needle is a medical device, referred to as a "biopsy cutting needle" in this text, used to obtain tissue samples for pathological examination. The gas path control device controls the upper and lower gas paths to provide appropriate negative pressure when the biopsy cutting needle is in operation, enabling tissue sample cutting and transport. Current gas path control devices primarily rely on pressure applied by an annular rib on the gas path control valve to engage with the insertion plate hole. This poses a risk of the gas path control valve detaching from the insertion plate, and the installation process can cause the gas path control valve to enlarge the insertion plate hole, resulting in the gas path control device failing to meet airtightness requirements.

[0003] Therefore, a biopsy cutting needle air circuit control device with an anti-detachment structure is designed to overcome the above problems. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a simple, practical, convenient, fast, safe and reliable biopsy rotary cutting needle air circuit control device with an anti-detachment structure. The air circuit control valve buckle is inserted into the snap-fit ​​groove along the air circuit control valve mounting groove of the insert plate. When the air circuit control valve is rotated to the initial position, since the buckle is fixed in the snap-fit ​​groove of the insert plate, the air circuit control valve cannot move axially in the snap-fit ​​groove of the insert plate, thus solving the risk of the air circuit control valve detaching from the insert plate during operation.

[0005] This utility model is achieved through the following technical solution: a biopsy cutting needle air circuit control device with an anti-detachment structure, which includes an insert plate installed on the cutting device and an air circuit control valve disposed in the insert plate. The insert plate is cylindrical in shape and hollow inside for inserting the air circuit control valve. The bottom of the insert plate has an air outlet connector connected to the upper and lower air circuits of the biopsy cutting needle, and the side has an air inlet connector connected to the negative pressure system of the cutting system. The air outlet connector and the air inlet connector are controlled to open and close by the air circuit control valve. A pressure relief pipe is also provided on the opposite side of the air inlet connector. When the work is completed, the negative pressure between the two connectors is eliminated by opening the pressure relief pipe. The insert plate also has a snap-fit ​​groove for snapping the air circuit control valve.

[0006] Preferably, the snap-fit ​​groove on the insert plate has a horizontal L-shaped structure, with the shorter side facing vertically upward as a guide insertion side and the other side lying horizontally as a moving area. The snap-fit ​​grooves on the opposite sides are arranged in a mirror image, and the air circuit control valve is provided with snaps arranged opposite to the two sides of the snap-fit ​​groove.

[0007] Preferably, the air circuit control valve is cylindrical in shape and consists of an upper mounting and operating part and a lower semi-sealed air passage part. The upper mounting and operating part has oppositely arranged buckles on both sides for engaging with the snap-fit ​​groove and moving left and right in the horizontal moving area. The lower semi-sealed air passage part has a concave notch as a switch for the air inlet and air outlet. When the notch of the air circuit control valve is rotated to face the air inlet on the side and the air outlet below, it is in the open state. When the air circuit control valve is rotated to open the notch and block the air inlet, it is in the closed state.

[0008] Preferably, the upper operating part of the air circuit control valve is provided with a toothed rotating edge near the top edge, which facilitates manual operation and rotation. After installation, the width of the toothed rotating edge is the same as the width of the insert plate, so that the toothed rotating edge and the insert plate form a whole.

[0009] Preferably, the inner side of the upper operating part of the air circuit control valve is provided with vertical ribs arranged opposite each other. At least one pair of these ribs are arranged opposite each other to enhance the rigidity and facilitate the identification of opening and closing the air circuit passage.

[0010] The beneficial effects of this utility model are as follows:

[0011] 1) This utility model can effectively prevent poor air tightness caused by the disconnection of the air circuit control valve, and improve the product quality of biopsy rotary cutting needle;

[0012] 2) The installation process of this utility model is lightweight and quick, and there is no need for violent installation that would affect the quality of the plug-in board;

[0013] 3) The insert plate and air circuit control valve of this utility model adopt a segmented closed structure, which reduces the requirements for injection molding production of parts. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the insert plate in this utility model.

[0015] Figure 2 This is a schematic diagram of the pneumatic control valve in this utility model.

[0016] Figure 3 This is a partial structural diagram of the air circuit control valve and the slide gate in this utility model. Detailed Implementation

[0017] To enable those skilled in the art to more clearly understand the purpose, technical solution and advantages of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "horizontal", and "vertical" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] The present invention will now be described in detail with reference to the accompanying drawings: Figure 1 As shown, a biopsy cutting needle air circuit control device with an anti-detachment structure includes an insert plate 1 installed on the cutting device and an air circuit control valve 2 disposed within the insert plate 1. The insert plate 1 is cylindrical in shape and hollow inside for inserting the air circuit control valve 2. The bottom of the insert plate 1 has an air outlet connector 3 connected to the upper and lower air circuits of the biopsy cutting needle, and the side has an air inlet connector 4 connected to the negative pressure system of the cutting system. The air outlet connector 3 and the air inlet connector 4 are controlled to open and close by the air circuit control valve 2. A pressure relief pipe 5 is also provided on the opposite side of the air inlet connector 4. When the work is completed, the negative pressure between the two connectors is eliminated by opening the pressure relief pipe 5. The insert plate 1 also has a snap-fit ​​groove 6 for snapping the air circuit control valve 2.

[0020] like Figure 2 As shown, the snap-fit ​​groove 6 on the insert plate 1 has a horizontal L-shaped structure, with the shorter side facing vertically upward as the guide insertion side 7, and the other side lying horizontally as the moving area 8. The snap-fit ​​grooves 6 on both sides are arranged in a mirror image. The air circuit control valve 2 is provided with snaps 9 arranged opposite to the two sides of the snap-fit ​​groove 6.

[0021] The gas control valve 2 is cylindrical in shape and consists of an upper mounting and operating part 10 and a lower semi-sealed gas passage part 11. The upper mounting and operating part 10 has two oppositely arranged latches 9 on its sides for engaging with the latching grooves 6 and moving left and right within the horizontally moving area 8. The lower semi-sealed gas passage part 11 has a concave notch 12, serving as a switch for the air inlet connector 4 and the air outlet connector 3. When the notch 12 of the gas control valve 2 is rotated to face the side air inlet connector 4 and the lower air outlet connector 3, it is in the open state. When the gas control valve 2 is rotated to open the notch 12 and block the air inlet connector 4, it is in the closed state. The upper mounting and operating part 10 of the gas control valve 2 also has a toothed rotating edge 13 near the top edge for easy manual rotation. After installation, the width of the toothed rotating edge 13 is the same as the width of the insert plate 1, forming a single unit with the insert plate 1.

[0022] The upper part of the gas control valve 2 is equipped with vertical ribs 14 arranged opposite to each other on the inner side of the operating part 10. At least one pair of these ribs are arranged opposite to each other to enhance the rigidity and facilitate the identification of opening and closing the gas passage, thereby improving the overall strength and practicality of this utility model.

[0023] The working principle of this utility model is as follows:

[0024] like Figure 3 As shown, to ensure good airtightness after the insert plate and pneumatic control valve are installed, we use an interference fit where the outer dimensions of the pneumatic control valve are slightly larger than the inner wall dimensions of the insert plate hole. The pneumatic control valve is inserted into the insert plate hole by aligning its clip with the slot. Rotating the pneumatic control valve within the slot, when the pneumatic control valve is in the zero position, the long side of the pneumatic control plate aligns with the air inlet connector. At this time, the pneumatic system is closed, and the negative pressure of the rotary cutting system is not connected to the pneumatic circuit of the biopsy rotary cutting needle. When the pneumatic control valve rotates to the working position, the short pneumatic control... The slide is rotated to align with the air inlet connector. The air path control device is connected to the negative pressure air path system of the rotary cutting system. The negative pressure of the rotary cutting system provides working negative pressure to the biopsy rotary cutting needle. The rotary cutting system can maintain the correct air path state when needed according to the working principle of the air path control device described above. Due to the existence of the snap-fit, the air path control valve cannot be axially displaced in the insertion plate hole and can only rotate along the snap-fit ​​groove. This effectively eliminates the possibility of the air path control valve affecting the air tightness of the air path control device during rotation, ensuring that the biopsy rotary cutting needle is in normal working condition.

[0025] The specific embodiments described herein are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A biopsy punch needle air path control device with anti-dropping structure, comprising an insertion plate mounted on a punch device and an air path control valve arranged in the insertion plate, characterized in that The plug plate is in a cylindrical shape as a whole, and is hollow inside for inserting the air path control valve, the bottom of the plug plate is provided with an air outlet joint connected with the air path of the biopsy and rotation cutting needle, the side is provided with an air inlet joint connected with the negative pressure system of the rotation cutting system, the air outlet joint and the air inlet joint are controlled to open and close by the air path control valve, the opposite side of the air inlet joint is also provided with a pressure relief pipeline, when the work is completed, the negative pressure between the two joints disappears by opening the pressure relief pipeline, the plug plate is also provided with a clamping groove for clamping the air path control valve.

2. The biopsy needle with anti-off structure and gas path control device according to claim 1, characterized in that The clamping groove on the plug plate is in a horizontal L-shaped structure, the short side is vertically upward as a guide insertion edge, and the other side is horizontal as a moving area, the clamping grooves on the opposite sides are mirror image arranged, the air path control valve is provided with buckles arranged on the opposite sides of the clamping groove.

3. The biopsy needle with anti-off structure and gas path control device according to claim 2, characterized in that The air path control valve is in a cylindrical shape as a whole, and is composed of an upper mounting and operating part and a lower semi-sealed air passage part, the upper mounting and operating part is provided with buckles arranged on the opposite sides for clamping into the clamping groove and moving left and right in the horizontal moving area, the lower semi-sealed air passage part is provided with a concave notch as an air inlet joint and an air outlet joint, when the notch of the air path control valve is opposite to the air inlet joint and the air outlet joint, it is in an open state, when the notch of the air path control valve is opposite to the air inlet joint, it is in a closed state.

4. The biopsy needle with anti-off structure and gas path control device according to claim 3, characterized in that The edge of the upper mounting and operating part of the air path control valve is also provided with a tooth-shaped rotating edge close to the top, which is convenient for manual operation and rotation, and the width of the tooth-shaped rotating edge is the same as the width of the plug plate after installation, so that the tooth-shaped rotating edge and the plug plate form a whole.

5. The biopsy needle with anti-off structure and gas path control device according to claim 3, characterized in that The inside of the upper mounting and operating part of the air path control valve is also provided with vertically arranged ribs arranged on the opposite sides, and at least one pair of ribs are arranged as a reinforcing hardness and a convenient identification of opening and closing the air path.

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