Single-hand operation fine needle sampling device

Abstract

The utility model belongs to the technical field of medical instruments, and discloses a single-hand operation fine needle sampling device which comprises a shell, a turning cover is arranged at the bottom of the shell, a rotating device is detachably installed in the turning cover, a negative pressure device and a sampling mechanism are installed on the shell, and the front end of the negative pressure device is fixedly connected with the tail end of the sampling mechanism. The front end of the rotating device is connected with the tail end of the sampling mechanism, an operating device is arranged on the shell and comprises a single-hand moving mechanism and a clamping groove rod, the single-hand moving mechanism is connected with the clamping groove rod, the clamping groove rod is fixedly connected with the negative pressure device, and the single-hand moving mechanism is used for driving the clamping groove rod to move with one hand and driving the rotating device to rotate. Therefore, the sampling mechanism is rotated for sampling, and the negative pressure device is driven for tissue suction. Motor driving and piston rod moving actions can be carried out simultaneously, operation can be carried out with one hand, sampling operation can be completed without assistance of other people, and operation is convenient and fast. The bottom of the housing is provided with a flip cover, and the rotating device can be detached for reuse, thereby reducing the use cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and in particular relates to a single-hand-operated fine needle sampling device. Background Art

[0002] Compared with coarse needle biopsy, fine needle aspiration biopsy has the characteristics of small incision, few complications and high safety, and its application is becoming more and more extensive.

[0003] Currently, most fine needle biopsies on the market are performed using the following methods: 1. Pulling and sampling after fine needle puncture; 2. Connecting a fine needle to a syringe to draw negative pressure; However, due to the different texture characteristics of the target tissues, some are soft, some are hard, and some are rich in blood, there are certain problems when using the above two methods alone for sampling. The first method takes out a small amount of sample, and generally requires multiple punctures to obtain a satisfactory sample. Especially for some harder tissues, the satisfaction of the sample obtained in a single time is not good; the second method increases the sampling volume compared to the first method, but because the puncture generally requires one hand to hold the probe and the other hand to hold the puncture needle, it is impossible for a single person to complete the syringe to draw negative pressure at this time, and multiple people are required to cooperate in the operation, which increases the labor cost and complexity of the operation. Utility Model Content

[0004] The utility model aims to provide a single-handedly operated fine needle sampling device to solve the above-mentioned technical problems.

[0005] In order to solve the above technical problems, the specific technical solution of the one-handed fine needle sampling device of the present invention is as follows:

[0006] A one-handed fine needle sampling device comprises a shell, a flip cover at the bottom of the shell, a rotating device detachably installed in the flip cover, a negative pressure device and a sampling mechanism installed on the shell, the front end of the negative pressure device and the end of the sampling mechanism are fixedly connected, the front end of the rotating device is connected to the end of the sampling mechanism, and an operating device is provided on the shell, the operating device comprises a one-handed moving mechanism and a slot rod, the one-handed moving mechanism is connected to the slot rod, and the slot rod is fixedly connected to the negative pressure device, the one-handed moving mechanism is used to drive the slot rod to move with one hand, and at the same time drive the rotating device to rotate, thereby rotating the sampling mechanism for sampling and driving the negative pressure device for tissue aspiration.

[0007] Furthermore, the negative pressure device includes a negative pressure cylinder and a piston rod, the negative pressure cylinder has scale lines, the negative pressure cylinder is fixed on the outer shell, the front end of the negative pressure cylinder is fixed to the rear end of the rotating device and is connected to the sampling mechanism, the piston rod moves in the negative pressure cylinder to generate negative pressure, and the slot rod is fixedly connected to the piston rod.

[0008] Furthermore, the flip cover is provided with a flip switch, and the flip cover is opened by the flip switch.

[0009] Furthermore, the sampling mechanism includes a sampling needle, a driven wheel with a joint and a fixed seat. The fixed seat is fixedly installed in the outer shell. One end of the driven wheel with a joint is sleeved on the fixed seat and sealed with a sealing ring, and the other end is coaxially fixedly connected to the sampling needle through a joint. The driven wheel with a joint can rotate freely in the outer shell under the drive of the rotating device.

[0010] Furthermore, the rotating device includes a shell, a driving wheel, a battery, a driving motor, a control module and a switch. The driving motor is fixedly connected in the shell, the output end of the driving motor is fixedly connected to the driving wheel, the driving wheel is engaged with the driven wheel with a joint, the driving motor is electrically connected to the control module, and the start and stop are controlled by the control module. The driving motor rotates to realize the rotation of the sampling mechanism. The switch is installed at the rear of the shell and is electrically connected to the control module. The battery is installed in the shell to power the rotating device.

[0011] Furthermore, the one-hand moving mechanism includes a handle rack and a transmission gear. The handle rack is arranged in the outer shell, and a slide groove is provided on the outer side of the outer shell. The handle of the handle rack extends out of the slide groove of the outer shell, and the handle rack is engaged with one side of the transmission gear. The slot rod has a rack, and the other side of the transmission gear is engaged with the rack on the slot rod.

[0012] Furthermore, the front of the pull handle rack is aligned with the switch. When the pull handle of the pull handle rack is pushed to the top of the slide slot, the pull handle rack presses the switch, stimulating the rotating device to drive the sampling mechanism to rotate.

[0013] This utility model provides a single-handed fine needle sampling device with the following advantages: It simultaneously drives the motor and moves the piston rod, allowing for single-handed operation without the need for assistance, making the sampling procedure convenient. Furthermore, the bottom of the housing features a flip cover, allowing the rotating mechanism to be disassembled and reused, reducing operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of a one-handed fine needle sampling device of the present invention;

[0015] Figure 2 This is a schematic diagram of the structure of the flip cover and rotating device of the utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the one-handed fine needle sampling device of the present invention;

[0017] Figure 4 This is a schematic structural diagram of the rotating device of the present utility model;

[0018] Figure 5This is a schematic diagram of the internal structure of the rotating device of the present utility model;

[0019] Figure 6 This is a schematic diagram of the structure of the one-hand moving mechanism of the utility model;

[0020] Figure 7 This is a schematic diagram of the switch structure touched by the one-hand moving mechanism of the utility model;

[0021] Explanation of the marks in the figure: 1. Housing; 11. Flip cover; 111. Flip cover switch; 2. Negative pressure device; 21. Negative pressure cylinder; 22. Piston rod; 3. Sampling mechanism; 31. Sampling needle; 31. Driven pulley with connector; 43. Fixed seat; 4. Rotating device; 41. Housing; 42. Driving pulley; 43. Battery; 44. Driving motor; 45. Control module; 46. Switch; 5. Operating device; 51. One-hand moving mechanism; 513. Handle rack; 514. Transmission gear; 52. Slot rod. DETAILED DESCRIPTION

[0022] In order to better understand the purpose, structure and function of the present invention, the following is a further detailed description of the one-handed fine needle sampling device of the present invention in conjunction with the accompanying drawings.

[0023] like Figure 1 Figure 2 As shown, the present invention provides a single-handed fine needle sampling device comprising a housing 1, which houses a rotating device 4. A negative pressure device 2 and a sampling mechanism 3 are mounted on the housing 1. The front end of the negative pressure device 2 is fixedly connected to the end of the sampling mechanism 3. The front end of the rotating device 4 is connected to the end of the sampling mechanism 3 and is used to drive the sampling mechanism 3 to rotate. An operating device 5 is also mounted on the housing 1 to drive the negative pressure device 2 and the rotating device 4.

[0024] The negative pressure device 2 includes a negative pressure cylinder 21 and a piston rod 22. The negative pressure cylinder 21 has scale lines. The negative pressure cylinder 21 is fixed on the shell 1. The front end of the negative pressure cylinder 21 is fixed to the rear end of the rotating device 4 and is connected to the sampling mechanism 3. The piston rod 22 moves in the negative pressure cylinder 21 to generate negative pressure.

[0025] like Figure 2 As shown, the bottom of the housing 1 has a flip cover 11, and the flip cover 11 has a flip cover switch 111. The flip cover 11 is opened by the flip cover switch 111, and the rotating device 4 is detachably installed in the flip cover 11. The rotating device 4 can be disassembled and reused.

[0026] like Figure 3As shown, the sampling mechanism 3 includes a sampling needle 31, a driven wheel 32 with a joint and a fixed base 33. The fixed base 33 is fixedly installed in the housing 1. One end of the driven wheel 32 with a joint is sleeved on the fixed base 33 and sealed with a sealing ring to ensure the airtightness of the sampling channel; the other end is coaxially fixedly connected to the sampling needle 31 through a joint. The driven wheel 32 with a joint can rotate freely in the housing 1 under the drive of the rotating device 4.

[0027] like Figure 4 、 Figure 5 As shown, the rotating device 4 includes a housing 41, a driving wheel 42, a battery 43, a drive motor 44, a control module 45, and a switch 46. The drive motor 44 is fixedly connected to the housing 41. The output end of the drive motor 44 is fixedly connected to the driving wheel 42, and the driving wheel 42 is engaged with the driven wheel 32 with a joint. The drive motor 44 is electrically connected to the control module 45, and the control module 45 controls the start and stop. The rotation of the drive motor 44 causes the sampling mechanism 3 to rotate. The switch 46 is installed at the rear of the housing 41 and is electrically connected to the control module 45. The battery 43 is installed in the housing 41 and provides power to the rotating device 4.

[0028] like Figure 2 As shown, the operating device 5 includes a one-hand moving mechanism 51 and a slot rod 52. The one-hand moving mechanism 51 is connected to the slot rod 52, and the slot rod 52 is fixedly connected to the piston rod 22 of the negative pressure device 2. The one-hand moving mechanism 51 is used to drive the slot rod 52 to move with one hand and drive the rotating device 4 to rotate at the same time, thereby rotating the sampling mechanism 3 for sampling and pulling the piston rod 22 for tissue suction.

[0029] like Figure 6 Figure 7 As shown, the one-handed movement mechanism 51 includes a handle rack 513 and a transmission gear 514. The handle rack 513 is disposed within the housing 1, which has a slot on its exterior. The handle of the handle rack 513 extends out of the slot in the housing 1 and meshes with one side of the transmission gear 514. The slot rod 52 has a rack, and the transmission gear 514 meshes with the rack on the slot rod 52 on its other side. Pushing the handle of the handle rack 513 forward pushes the slot rod 52 in the opposite direction, thereby advancing the piston rod 22. Movement of the piston rod 22 also drives the gear transmission mechanism. The front of the handle rack 513 is aligned with the switch 46. When the handle of the handle rack 513 reaches the top of the slot, it presses the switch 46, activating the rotating device 4 and causing the sampling mechanism 3 to rotate. Releasing the handle stops the sampling mechanism 3 from rotating.

[0030] During use, the sampling mechanism 3 is inserted into the target position, the one-hand movable mechanism 51 is pushed to the maximum limit, the switch 47 is pressed, and the rotating device 4 rotates to start sampling. After sufficient sample is collected, the one-hand movable mechanism 51 is released to release the negative pressure, the sampling mechanism 3 is pulled out, and the piston rod 22 is pushed to push the sample out.

[0031] It is understood that the present invention is described by way of certain embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the guidance of the present invention, these features and embodiments may be modified to suit specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A single-handed fine needle sampling device, comprising a housing (1), a flip cover (11) at the bottom of the housing (1), a rotating device (4) detachably mounted in the flip cover (11), a negative pressure device (2) and a sampling mechanism (3) mounted on the housing (1), a front end of the negative pressure device (2) and a rear end of the sampling mechanism (3) fixedly connected, a front end of the rotating device (4) and a rear end of the sampling mechanism (3), an operating device (5) on the housing (1), characterized in that: The operating device (5) comprises a single-handed moving mechanism (51) and a slot rod (52), wherein the single-handed moving mechanism (51) is connected to the slot rod (52), and the slot rod (52) is fixedly connected to the negative pressure device (2). The single-handed moving mechanism (51) is used to drive the slot rod (52) to move with one hand, and simultaneously drive the rotating device (4) to rotate, thereby rotating the sampling mechanism (3) to perform sampling and driving the negative pressure device (2) to perform tissue suction.

2. The one-handed fine needle sampling device according to claim 1, characterized in that: The negative pressure device (2) comprises a negative pressure cylinder (21) and a piston rod (22). The negative pressure cylinder (21) has scale lines. The negative pressure cylinder (21) is fixed to the housing (1). The front end of the negative pressure cylinder (21) is fixed to the rear end of the rotating device (4) and is connected to the sampling mechanism (3). The piston rod (22) moves in the negative pressure cylinder (21) to generate negative pressure. The slot rod (52) is fixedly connected to the piston rod (22).

3. The one-handed fine needle sampling device according to claim 1, characterized in that: The flip cover (11) is provided with a flip cover switch (46), and the flip cover (11) is opened by the flip cover switch (46).

4. The one-handed fine needle sampling device according to claim 1, characterized in that: The sampling mechanism (3) comprises a sampling needle (31), a driven wheel with a joint (32) and a fixed seat (33). The fixed seat (33) is fixedly mounted in the housing (1). One end of the driven wheel with a joint (32) is sleeved on the fixed seat (33) and sealed with a sealing ring. The other end is coaxially fixedly connected to the sampling needle (31) through a joint. The driven wheel with a joint (32) can rotate freely in the housing (1) under the drive of the rotating device (4).

5. The one-handed fine needle sampling device according to claim 4, characterized in that: The rotating device (4) comprises a housing (41), a driving wheel (42), a battery (43), a driving motor (44), a control module (45) and a switch (46). The driving motor (44) is fixedly connected in the housing (41). The output end of the driving motor (44) is fixedly connected to the driving wheel (42). The driving wheel (42) is engaged with the driven wheel (32) with a joint. The driving motor (44) is electrically connected to the control module (45). The start and stop of the driving motor (44) are controlled by the control module (45). The driving motor (44) rotates to realize the rotation of the sampling mechanism (3). The switch (46) is installed at the rear of the housing (41) and is electrically connected to the control module (45). The battery (43) is installed in the housing (41) to supply power to the rotating device (4).

6. The one-handed fine needle sampling device according to claim 5, characterized in that: The one-hand moving mechanism (51) comprises a handle rack (513) and a transmission gear (514); the handle rack (513) is arranged in the housing (1); the outer side of the housing (1) has a slide groove; the handle of the handle rack (513) extends out of the slide groove of the housing (1); the handle rack (513) is meshed with one side of the transmission gear (514); the slot rod (52) has a rack; the other side of the transmission gear (514) is meshed with the rack on the slot rod (52).

7. The one-handed fine needle sampling device according to claim 6, characterized in that: The front of the pull handle rack (513) is aligned with the switch (46). When the pull handle of the pull handle rack (513) is pushed to the top of the slide slot, the pull handle rack (513) presses the switch (46), activating the rotating device (4) to drive the sampling mechanism (3) to rotate.

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