CN219461232U

CN219461232U - Stepless-adjusting medical biopsy needle

Info

Publication number: CN219461232U
Application number: CN202320058536.3U
Authority: CN
Inventors: 莫易凡; 李育新; 林雅玲; 姚慧川; 林聪杰
Original assignee: Surgaid Medical (xiamen) Co ltd
Current assignee: Surgaid Medical (xiamen) Co ltd
Priority date: 2023-01-09
Filing date: 2023-01-09
Publication date: 2023-08-04
Anticipated expiration: 2033-01-09

Abstract

The utility model relates to a stepless-adjusting medical biopsy needle, the main body of which is a medical biopsy needle, a displacement motor is arranged in the medical biopsy needle, and the displacement motor drives a displacement gear to rotate, so that an inner knife is driven to rotate to realize rotary cutting; the system also comprises a man-machine interaction module, a micro control unit, a driving circuit and an encoder; the encoder is arranged in the displacement motor and is used for counting the rotating ring of the displacement motor; the man-machine interaction module, the micro-control unit, the driving circuit and the encoder are sequentially connected, so that a command is input through the man-machine interaction module, the rotation number of turns of the motor is controlled, and the rotation number of turns of the displacement motor is fed back to the micro-control unit through the encoder. The beneficial effects of the utility model are as follows: the utility model can steplessly adjust the inner knife, is more flexible to use, and can be adjusted by an operator according to the requirements of pathological tissues.

Description

Stepless-adjusting medical biopsy needle

Technical Field

The utility model relates to the field of medical instruments, in particular to a stepless-adjusting medical biopsy needle.

Background

The medical biopsy needle is widely used in the existing medical neighborhood by clinical operation, is a medical instrument suitable for various organs such as kidney, liver, lung, mammary gland, thyroid gland, prostate gland, pancreas, testis, uterus, ovary, body surface and the like, and can also be used for sampling living tissues such as cone tumors, unidentified tumors and the like, sucking cells and the like.

The existing medical biopsy needles are mostly fixed slotted and have modes of half slotting, quarter slotting and the like. However, the operation of the prior art is not flexible for clinical operators, and the clinical operators cannot randomly adjust the sampling of the pathological tissues, so that the operation risk and the treatment difficulty are increased.

Disclosure of Invention

The utility model aims to provide a medical biopsy needle which allows a clinician to adjust sampling steplessly according to the size of lesion tissue.

The utility model is realized by the following technical scheme: the medical biopsy needle is characterized in that the medical biopsy needle is provided with a displacement motor, and the displacement motor drives a displacement gear to rotate so as to drive an inner knife to rotate to realize rotary cutting;

the system also comprises a man-machine interaction module, a micro control unit, a driving circuit and an encoder; the encoder is arranged in the displacement motor and is used for counting the rotating ring of the displacement motor; the man-machine interaction module, the micro-control unit, the driving circuit and the encoder are sequentially connected, so that a command is input through the man-machine interaction module, the rotation number of turns of the motor is controlled, and the rotation number of turns of the displacement motor is fed back to the micro-control unit through the encoder.

Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model can steplessly adjust the inner knife, is more flexible to use, and can be adjusted by an operator according to the requirements of pathological tissues.

2. The utility model has simple and convenient operation, the length of the inner knife can be adjusted and controlled digitally, and the convenience of operation is improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is a schematic diagram of the circuit connection of the present utility model.

Description of the reference numerals: 1 thread structure, 2 needle handle, 3 hollow needle tube, 4 inner knife, 5 knife slot, 6 screw rod, 7 rotary gear, 8 displacement gear.

Detailed Description

The present utility model will be described in detail with reference to the accompanying drawings, but the protection of the present utility model is not limited to the following:

as shown in fig. 1 and 2, a medical biopsy needle with stepless regulation is provided, the main body of the medical biopsy needle is a medical biopsy needle, a displacement motor is arranged in the medical biopsy needle, and the displacement motor drives a displacement gear to rotate, so that an inner knife is driven to rotate to realize rotary cutting;

the medical biopsy needle is in the prior art, and mainly comprises a hollow needle tube 3, an inner knife 4 and a needle handle 2, wherein the hollow needle tube 3 is annularly arranged outside the inner knife 4, the inner knife 4 can move back and forth in the hollow needle tube 3, a knife slot 5 for accommodating tissues is formed in the hollow needle tube 3, and the hollow needle tube 3 is connected with the needle handle 2;

the needle handle 2 is hollow, and a screw rod 6 and a thread structure 1 on the inner wall of the needle handle 2 are arranged in the needle handle 2; the screw rod 6 is connected with the inner cutter 4 and is used for pushing the inner cutter 4 to move back and forth in the cutter groove 5;

the front end of the screw rod 6 is connected with the inner cutter 4, and the screw rod 6 is coaxially provided with a displacement gear 8 and a rotation gear 7.

The displacement motor is meshed with a displacement gear 8, and a rotary gear 7 is connected with the rotary motor.

Since the medical biopsy needle is an existing structure, specific structural details are not described in detail.

The medical biopsy needle uses the hollow needle tube 3 to guide the inner knife 4 to move back and forth, and protects the movement track of the inner knife from deviating, during self-checking, the inner knife can be at any position of the knife slot, the current position does not make counting record, the knife slot returns to the bottom, and then runs round towards the top, the knife slot is closed, and the self-checking is completed.

The core of the utility model is that: the system also comprises a man-machine interaction module, a micro control unit, a driving circuit and an encoder; the encoder is arranged in the displacement motor and is used for counting the rotating ring of the displacement motor; the man-machine interaction module, the micro-control unit, the driving circuit and the encoder are sequentially connected, so that a command is input through the man-machine interaction module, the rotation number of turns of the motor is controlled, and the rotation number of turns of the displacement motor is fed back to the micro-control unit through the encoder.

The man-machine interaction module is a touch display screen. And the touch display screen is arranged on the handle of the medical biopsy needle.

When the utility model is used, a lesion tissue is found, the size of a parameter M is determined according to the size of the lesion tissue, a sampling button of a display screen is clicked, a required parameter M is set, the parameter M reaches the running distance of an inner knife, the maximum value of the parameter M does not exceed the length X of the knife slot (if the total length of the knife slot is 19mm, the range of the parameter M is generally between 5 and 19mm, and if the lesion tissue is too small, no operation is needed, and other operation modes are needed to be considered for treatment if the lesion tissue is too large). A Micro Control Unit (MCU) receives an input signal of a display screen, transmits the signal to a driving circuit, and controls a displacement motor; because the rotation number of the displacement motor and the M value are in a multiple relation before, the rotation number of the displacement motor can be calculated according to the M value, and the value fed back by the rotation number of the displacement motor is converted into the number of pulses of the encoder and fed back to a Micro Control Unit (MCU) to control the displacement motor to stop moving. M/X is the duty ratio of the knife slot sampling, the pulse from the bottom to the end point is assumed to be N, the duty ratio of the knife slot movement= (N-N multiplied by the duty ratio of the knife slot sampling)/N, the MCU realizes stepless adjustment through calculation, the rotation of the displacement motor can drive the displacement gear to rotate, the rotation of the displacement gear can drive the screw rod to move back and forth, the screw rod can push the inner knife to move back and forth in the knife slot, the pathological tissue can be sampled after the position of the inner knife is adjusted, and the sampling is completed.

While the utility model has been illustrated and described with respect to specific embodiments and alternatives thereof, it will be appreciated that various changes and modifications can be made therein without departing from the spirit of the utility model. It is, therefore, to be understood that the utility model is not to be in any way limited except by the appended claims and their equivalents.

Claims

1. The medical biopsy needle is characterized in that the medical biopsy needle is provided with a displacement motor, and the displacement motor drives a displacement gear to rotate so as to drive an inner knife to rotate to realize rotary cutting;

the method is characterized in that: the system also comprises a man-machine interaction module, a micro control unit, a driving circuit and an encoder; the encoder is arranged in the displacement motor and is used for counting the rotating ring of the displacement motor; the man-machine interaction module, the micro-control unit, the driving circuit and the encoder are sequentially connected, so that a command is input through the man-machine interaction module, the rotation number of turns of the motor is controlled, and the rotation number of turns of the displacement motor is fed back to the micro-control unit through the encoder.

2. A steplessly adjustable medical biopsy needle according to claim 1, wherein: the man-machine interaction module is a touch display screen.

3. A steplessly adjustable medical biopsy needle according to claim 2, wherein: the touch display screen is arranged on the handle of the medical biopsy needle.