Detachable medical navigation needle knife

Abstract

The utility model relates to a detachable medical navigation needle knife, and belongs to the technical field of medical instruments, in particular to the technical field of surgical needle knives. According to the medical handheld device, the ejection piece is arranged on the needle knife handle of the needle knife module and matched with the sensor of the sensor module, so that the medical handheld device can measure pressure in real time after the needle knife is in contact with the needle knife and is stressed, the medical handheld device can be used only by pinching the needle knife shell with fingers, and the acupuncture pressure change of the needle knife can be felt in the operation process; the control accuracy of the acupuncture depth is improved, the hand space is optimized, and the burden during an operation is reduced; due to the fact that the gap is reserved between the ejection piece and the contact end of the pull pressure sensor in the natural state of the elastic piece, the situation that detection data are wrong due to the fact that the needle knife is affected by the environment in the natural state is avoided, detachable convenient arrangement is achieved through clamping connection of the sensor shell and the needle knife shell, and the needle knife is convenient to use. And the position can be fixed through the locking push key.

Description

TECHNICAL FIELD

[0001] The utility model relates to a detachable medical navigation needle knife belongs to medical instrument technical field, especially surgical needle knife technical field. BACKGROUND

[0002] Medical needle knife is a kind of medical instrument for minimally invasive surgery, mainly used for cutting and separating soft tissue. Its design usually includes an elongated needle and a controllable blade, which can be operated under local anesthesia, reducing the pain and recovery time of patients, and is commonly used in soft tissue injury, tumor resection and other surgical procedures. The tip of the commonly used medical needle knife is provided with a narrow blade, which can play the functions of needling and cutting during the operation.

[0003] However, the existing medical needle knife mainly relies on the medical experience and observation of doctors to judge the accuracy of needle knife positioning, needling pressure and needling depth during treatment, which is not conducive to accurate judgment and adjustment of the operation process, which brings limitations to some high-technology surgical procedures, and lacks a judgment and measurement method.

[0004] In order to improve the accuracy and depth of needling, the prior art discloses a kind of intervertebral disc protrusion heat ablation needle knife as shown in CN209751213U, which guides the positioning of needle knife by some auxiliary mechanisms, but this device has a certain volume and mass, which greatly occupies the hand burden of operator during operation and is difficult to hold in hand for flexible change of multiple angles. In fact, it is not practical in actual operation, and it is also difficult to clean and disinfect, which brings more limitations and is inconvenient to use.

[0005] In addition, there is also a kind of small needle knife insertion auxiliary positioner as shown in CN116211405A, which connects the needle knife with a sensor, but the sensor cannot be used at any time, and the needle knife may start the sensor and provide detection data in the exposed natural state. Not only will the accuracy of detection be affected by the environment, but also there will be energy consumption. The limited interface setting of the handle seat also makes it impossible to connect other devices, such as adding image capture identification markers and navigation module auxiliary devices. UTILITY MODEL CONTENTS

[0006] To solve the above problems, the utility model provides a detachable medical navigation needle knife, comprising:

[0007] The sensor module comprises a sensor shell and a tensile and compressive force sensor arranged in the sensor shell, and one side of the tensile and compressive force sensor has a contact end.

[0008] The needle knife module comprises a needle knife shell and a needle knife handle arranged inside the needle knife shell, one end of the needle knife handle is connected with the needle knife shell through an elastic element, the other end of the needle knife handle is connected with a needle knife, the needle knife can pass through one end of the needle knife shell far away from the sensor module, and the needle knife handle is provided with an ejection element penetrating into the inside of the sensor shell.

[0009] In the natural state of the elastic element, a gap is left between the ejection element and the contact end of the tension and pressure sensor, when the needle knife is forced to displace towards the sensor module, the ejection element touches the contact end of the tension and pressure sensor to start the tension and pressure sensor.

[0010] Further, clamping grooves are arranged on both sides of the sensor shell, and clamping elements capable of fitting the clamping grooves are arranged on both sides of the needle knife shell, the clamping elements can be fixedly connected with the sensor shell and the needle knife shell after being pushed into the clamping grooves.

[0011] Further, the clamping grooves are provided with locking push keys, the locking push keys can lock the positions of the clamping elements pushed into the clamping grooves.

[0012] Further, the needle knife shell is provided with recessed streamlined side edge structures on both sides.

[0013] Further, the tension and pressure sensor is fixedly connected with the sensor shell through a first metal sheet and a first fastener fixed to the first metal sheet, and a gap is left between the outer surface of the tension and pressure sensor in any direction and the inner wall of the sensor shell.

[0014] Further, the needle knife handle is connected with a second metal sheet through an elastic element, and the second metal sheet is fixed to the needle knife shell through second fasteners on both sides.

[0015] Further, an end cover is arranged on the side of the sensor shell far away from the needle knife shell, and the end cover is provided with a wire passing hole and a wire protection ring.

[0016] Further, the end cover is provided with a strip-shaped groove for mounting a motion capture ball base rigid body.

[0017] Further, a detachable protective sleeve is arranged outside the needle knife.

[0018] Further, indication mark symbols are arranged on the surface of the needle knife shell.

[0019] The beneficial effects of the utility model are as follows:

[0020] The utility model discloses a medical handheld device which is capable of measuring pressure in time after the needle-knife contact force by setting the ejector of the needle-knife module and the sensor of the sensor module, and the device can be used by pinching the needle-knife shell with fingers, so that the user can feel the change of the needle-knife puncture pressure during the operation, the control accuracy of the puncture depth is improved, the hand space is optimized, and the burden during the operation is reduced; since there is a gap between the contact end of the ejector and the tension and compression sensor in the natural state of the elastic member, the detection data is not affected by the environment in the natural state of the needle-knife, the convenient detachable setting is realized by the clamping of the sensor shell and the needle-knife shell, and the position is fixed by the locking push key; in addition, the end cover and the wire hole are reserved at the rear end of the sensor shell, and other auxiliary navigation and detection equipment can be connected conveniently. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is an external connection schematic diagram of the overall structure in an embodiment of the utility model;

[0022] Figure 2 It is an internal connection schematic diagram of the overall structure in an embodiment of the utility model;

[0023] Figure 3 It is a structure schematic diagram of the sensor module in an embodiment of the utility model;

[0024] Figure 4 It is a structure schematic diagram of the needle-knife module in an embodiment of the utility model;

[0025] In the drawing: 1, sensor module; 2, needle-knife module; 3, needle-knife part;

[0026] 11, tension and compression sensor; 12, end cover; 13, first metal sheet; 14, first fastener; 15, clamping groove; 16, locking push key; 111, contact end;

[0027] 21, needle-knife handle; 22, second fastener; 23, clamping member; 24, second metal sheet; 25, elastic member; 26, ejector;

[0028] 31, needle-knife; 32, protective sleeve. DETAILED DESCRIPTION

[0029] The technical scheme of the utility model will be described clearly and completely in combination with the drawings, and obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0030] In the description of the utility model, it is necessary to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or positional relationship is based on the orientation or positional relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element indicated must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0031] In the description of the utility model, it is necessary to explain, unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood broadly, for example, it can be fixed connection, can also be detachable connection, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through intermediate medium, can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0032] Example 1

[0033] As Figures 1-4 The utility model provides a detachable medical navigation needle knife, including:

[0034] Sensor module 1, including sensor shell and the tensile pressure sensor 11 that sets up in sensor shell interior, one side of the tensile pressure sensor 11 has contact end 111, the both sides of sensor shell are provided with clamping groove 15, the tensile pressure sensor 11 is fixedly connected sensor shell through first metal sheet 13 and the first fastener 14 fixed in first metal sheet 13, the outer surface of the tensile pressure sensor 111 in any direction is all left with the gap between sensor shell inner wall, and it is convenient for the heat dissipation of tensile pressure sensor 111, the tensile pressure sensor can also be replaced by other sensors;

[0035] The needle knife module 2 comprises a needle knife shell and a needle knife handle 21 arranged inside the needle knife shell, one end of the needle knife handle 21 is connected to the needle knife shell through an elastic element 25, the other end is connected to a needle knife 31, the needle knife 31 can pass through one end of the needle knife shell away from the sensor module 1, the needle knife handle 21 is provided with an ejection element 26 penetrating into the inside of the sensor shell, both sides of the needle knife shell are provided with concave streamlined side structures, which are convenient for an operator to hold, and a clamping element 23 which can be fitted into a clamping groove 15, after the clamping element 23 is pushed into the clamping groove 15, the sensor shell and the needle knife shell can be fixedly connected, the needle knife handle 21 is connected to a second metal sheet 24 through the elastic element 25, the second metal sheet 24 is fixed to the needle knife shell through second fasteners 22 on both sides, so as to facilitate the conduction of the elastic element 25.

[0036] In the natural state of the elastic element 25, a gap is left between the ejection element 26 and the contact end 111 of the tension and compression sensor 11.

[0037] Further, the clamping groove 15 is provided with a locking push key 16, which can lock the position of the clamping element 23 pushed into the clamping groove 15.

[0038] Further, one side of the sensor shell away from the needle knife shell is provided with an end cover 12, the end cover 12 is provided with a wire passing hole and a wire protection ring, the wire passing hole can pass through a communication cable and be connected to a computer, and the wire protection ring can provide protection for the wire. The end cover 12 is also provided with a strip-shaped groove for mounting a motion capture ball base rigid body, which is convenient for connecting and installing the motion capture ball.

[0039] When the medical navigation needle knife is not used, a detachable protective sleeve 32 can be sleeved outside the needle knife 31 to prevent the needle knife 31 from being damaged, corroded or contaminated.

[0040] Preferably, the surface of the needle knife shell can also be provided with an indication mark symbol, such as a word or an arrow, to indicate the operation direction.

[0041] Working principle of the utility model:

[0042] Firstly, the sensor module 1 and the needle knife module 2 are assembled, and the protective sleeve 32 is removed at the same time.

[0043] Secondly, when the operation is carried out, the fingers pinch the two sides of the needle-knife shell, and the tip of the needle-knife 31 is directed towards the operation position; then, the needle-knife 31 contacts the tissue of the operation position, at this time, the needle-knife 31 generates displacement in the direction of the sensor module 1, overcomes the action of the elastic member 25 and drives the ejector 26 to touch the contact end 111 of the tension-compression force sensor 11, so that the tension-compression force sensor 11 starts to connect and collect data, the data is the force change of the needle-knife 31, the pressure value collected by the tension-compression force sensor 11 is transmitted to the computer through the communication cable, then analyzed and processed through the software, a curve reflecting the force value change in the operation process is formed, which plays a guiding and warning role for the operation doctor;

[0044] Finally, when the operation is stopped, the pressure applied by the hand is removed, the needle-knife 31 is automatically reset under the action of the elastic member 25, and the ejector 26 is also separated from the contact end 111 to disconnect the connection of the tension-compression force sensor 11. Next time the operation is carried out, another needle-knife module can be replaced for continuous use.

[0045] Although the utility model has disclosed as above with preferable embodiments, it is not used to limit the utility model, anyone familiar with this technology can make various changes and modifications without departing from the spirit and scope of the utility model, therefore the protection scope of the utility model should be limited by the claims.

Claims

1. A detachable medical navigation needle knife, characterized in that, include: A sensor module includes a sensor housing and a tension / compression sensor disposed inside the sensor housing, wherein one side of the tension / compression sensor has a contact end; The needle knife module includes a needle knife housing and a needle knife handle disposed inside the needle knife housing. One end of the needle knife handle is connected to the needle knife housing via an elastic element, and the other end is connected to the needle knife. The needle knife can pass through the end of the needle knife housing away from the sensor module. The needle knife handle is provided with an ejector that penetrates into the sensor housing. In the natural state of the elastic element, there is a gap between the ejector and the contact end of the tension / compression sensor; when the needle knife is subjected to force and generates displacement in the direction of the sensor module, the ejector will touch the contact end of the tension / compression sensor to activate the tension / compression sensor.

2. The detachable medical navigation needle knife according to claim 1, characterized in that, The sensor housing has snap-fit ​​grooves on both sides, while the needle knife housing has snap-fit ​​members on both sides that can fit the snap-fit ​​grooves. After the snap-fit ​​members are pushed into the snap-fit ​​grooves, they can fix the sensor housing and the needle knife housing together.

3. The detachable medical navigation needle knife according to claim 2, characterized in that, The snap-fit ​​slot is equipped with a locking push key, which can lock the position of the snap-fit ​​piece pushed into the snap-fit ​​slot.

4. The detachable medical navigation needle knife according to claim 3, characterized in that, The needle knife housing has concave streamlined side structures on both sides.

5. The detachable medical navigation needle knife according to claim 1, characterized in that, The tension / compression sensor is fixedly connected to the sensor housing via a first metal sheet and a first fastener fixed to the first metal sheet. A gap is left between the outer surface of the tension / compression sensor at any position and the inner wall of the sensor housing.

6. The detachable medical navigation needle knife according to claim 1, characterized in that, The needle knife handle is connected to a second metal plate via an elastic element, and the second metal plate is fixed to the needle knife housing by second fasteners on both sides.

7. The detachable medical navigation needle knife according to claim 1, characterized in that, The sensor housing has an end cap on the side away from the needle knife housing, and the end cap has a through hole and a protective coil.

8. The detachable medical navigation needle knife according to claim 7, characterized in that, The end cap is provided with a strip groove for installing the rigid body of the motion capture ball base.

9. The detachable medical navigation needle knife according to claim 1, characterized in that, The needle knife is covered with a removable protective sleeve.

10. The detachable medical navigation needle knife according to claim 1, characterized in that, The surface of the needle knife housing is provided with indicator markings.

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