Adjustable nerve crush forceps with pressure sensing function

Abstract

The utility model discloses a pair of adjustable nerve bruise forceps with pressure sensing function, which comprises a first forceps body, a second forceps body and a bruise clip, one end of the forceps body far away from a user is provided with a buckle, the buckle is connected with the bruise clip, and the first forceps body and the second forceps body drive the bruise clip to close after applying external force so as to bruise nerves. The bruise clamp is provided with various types of adaptive buckles, the bruise width of the nerve bruise clamp is adjusted to adapt to different experiment requirements and requirements of experiment objects, a pressure sensor is arranged at the position, close to the buckles, of the clamp body, the pressure sensor sends a sensing signal to a controller, an operator can control own force through a display screen of the sensor, and the operation is convenient. And the nerve injury degree is kept consistent. The dependence of the crushing degree on an operator is reduced, the operation fatigue is relieved, and a more accurate, scientific and efficient medical instrument is provided for animal experiment modeling of nerve crushing injuries.

Description

Technical Field

[0001] The utility model relates to nerve crush equipment, in particular to an adjustable nerve crush forceps with a pressure sensing function. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] Nerve compression forceps are special surgical tools that cause nerve compression. They are used as medical devices to prepare animal models of nerve compression injuries in animal experiments. They are equipped with small compression clamps of different widths, which can cause nerve compression of different widths to meet different experimental subjects and various experimental needs. The compression forceps are equipped with a micro pressure sensor on the contact surface with the compression clamp. The operator can adjust and control the clamping pressure and time through the sensor display.

[0004] In the process of preparing animal models of nerve crush injury, many researchers currently use "hemostat" or "needle holder" to directly perform nerve crush injury. There is no unified and standardized crushing tool. The clamping pressure in the model preparation process cannot be accurately quantified and controlled in real time. The cross-section of surgical tools such as "hemostat" and "needle holder" contains tooth marks, which can easily cause uneven damage to the nerve mold during nerve crush injury, which is not conducive to the evaluation of the efficacy results in the later stage of animal experiments. The width of nerve tissue crush injury also needs to be measured and marked with a ruler before the experiment can be carried out, and the required width cannot be quickly crushed. The clamping time needs to be recorded using a timer, and manual control contains reaction delays, and the pressure acting on the nerve is not accurate enough. In addition, since there is no standardized and unified nerve crushing tool, the pressure and degree of nerve injury cannot be accurately quantified, so the degree of nerve injury caused by different operators is difficult to maintain consistency, which greatly affects the repeatability of preparing animal models of nerve crush injury in animal experiments. There is an urgent need for standardized and unified surgical tools with controllable clamping pressure and time. Summary of the invention

[0005] In order to standardize the preparation of animal models of nerve crush injuries, the utility model provides an adjustable nerve crush forceps with a pressure sensing function.

[0006] An adjustable nerve crush forceps with pressure sensing function comprises a first forceps body, a second forceps body and a crushing clamp. A buckle is provided at one end of the forceps body away from the user, and the buckle is connected to the crushing clamp. The first forceps body and the second forceps body drive the crushing clamp to close the crushed nerve after external force is applied.

[0007] Furthermore, the compression clamp includes a first compression piece and a second compression piece, the first compression piece and the second compression piece are connected by a bearing, and the compression piece can rotate around the bearing as a rotation axis. This design allows the compression piece to rotate freely within a certain range, so that it can adapt to nerve tissues of different angles and curves, so as to apply pressure more accurately during the experiment.

[0008] The second technical problem solved by the utility model is to adapt to various experimental needs:

[0009] Furthermore, the compression clamp has a variety of models of adapter buckles, including models with compression piece widths of 1mm, 2mm, 3mm, 5mm, 8mm, and 10mm. The operator can select compression clamps of different widths as needed to adapt to different experimental requirements. It is suitable for the preparation of nerve compression injury models of different experimental animals such as mice, rats, rabbits, beagles, and macaques. Small compression forceps of appropriate width can also be selected for the preparation of nerve compression models according to different experimental requirements. Providing compression clamps with a variety of models of adapter buckles enhances the versatility and customization capabilities of the experiment.

[0010] The contact surface with the nerve is smooth. When compressing the nerve, the fibers in the nerve are broken, while the surrounding nerve supporting tissues, such as the layers of nerve membranes, remain continuous, meeting the requirements of different experimenters for the width of the compression injury. The connection axis between the compression plate and the buckle is provided with a medical rubber elastic coating, which facilitates the installation of the compression clamp and ensures the fixation of the compression clamp and the clamp body.

[0011] The third technical problem solved by the utility model is to accurately control the pressure:

[0012] Furthermore, the clamp body is provided with a pressure sensor near the buckle, and the pressure sensor sends a sensing signal to the controller. This design can monitor the pressure applied to the nerve in real time. The HZC-MH2 model micro sensor of the Chengying brand can be used, and the size parameters are as follows: Figure 5 As shown, there are also compatible pressure displays from the same brand.

[0013] Furthermore, the controller includes a screen and buttons, and the buttons include a refresh button, a power button, and a timing button. The screen can display timing information and pressure data in real time, so that the operator can quickly understand the experimental status and improve the efficiency of experimental monitoring. Through the function buttons (such as refresh, power, timing), the operator can control the start, stop and reset of the controller.

[0014] Furthermore, the pliers body is connected with stepped jaws, and the jaws are matched step by step. The user increases the applied force step by step to reach the ideal pressure and stabilize the control.

[0015] Furthermore, the caliper body is provided with a pin hole, and the first caliper body and the second caliper body are connected via a pin shaft.

[0016] Furthermore, a finger ring is provided at one end of the pliers body close to the user, and the finger ring is an elliptical ring, which is ergonomic and can better cooperate with the operator's movements.

[0017] Furthermore, the clamp body and the crush clamp are made of medical stainless steel, such as 316 stainless steel, which can be sterilized by high-pressure steam.

[0018] Furthermore, the opening angle of the crush clamp ranges from 0 to 180 degrees, meeting conventional experimental requirements.

[0019] The utility model installs a micro sensor at the clamping part, and the operator can control his strength through the display screen of the sensor to keep the degree of nerve injury consistent. The compression forceps have replaceable small compression clamps of different widths to meet the needs of different experiments and experimental subjects, making the experimental operation more convenient. It reduces the dependence of the injury degree on the operator and reduces operator fatigue, providing a more accurate, scientific and efficient medical device for animal experimental modeling of nerve compression injuries. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, and the above and / or other advantages of the present invention will become more clear.

[0021] Figure 1 It is a schematic diagram of the structure of the utility model.

[0022] Figure 2 This is an exploded view of the components of the utility model.

[0023] Figure 3 This is a schematic diagram of the use of the utility model.

[0024] Figure 4 This is a schematic diagram of the controller of the utility model.

[0025] Figure 5 Dimensional drawings of available pressure sensors. DETAILED DESCRIPTION

[0026] In the attached drawings of the utility model: 1-first clamp body; 2-second clamp body; 3-buckle; 3a-first buckle; 3b-second buckle; 4-pressure sensor; 4a-first pressure sensor; 4b-second pressure sensor; 5-finger ring; 5a-first finger ring; 5b-second finger ring; 6-stepped claw; 6a-first claw; 6b-second claw; 7-pin shaft; 8-compression clamp; 8a-first compression plate; 8b-second compression plate; 9-controller; 91-screen; 92-refresh button; 93-power button; 94-timing button; 10-bearing.

[0027] like Figure 1 As shown, an adjustable nerve crush forceps with pressure sensing function includes a first forceps body 1, a second forceps body 2 and a crushing clamp 8. The end of the forceps body away from the user is provided with a buckle 3, and the buckle 3 is connected to the crushing clamp 8. The first forceps body 1 and the second forceps body 2 drive the crushing clamp 8 to close the crushed nerve after applying external force.

[0028] like Figure 2 As shown, the front end of the first pliers body 1 is connected to a buckle 3a for connecting to the first compression piece 8a of the compression clamp 8, a first pressure sensor 4a is provided on the outer side of the front end of the first pliers body 1, a first finger ring 5a is connected to the rear end of the first pliers body 1, and a first claw 6a is provided on the inner side of the rear end of the first pliers body 1; the front end of the second pliers body 2 is connected to a buckle 3b for connecting to the second compression piece 8b of the compression clamp 8, a second pressure sensor 4b is provided on the outer side of the front end of the second pliers body 2, a second finger ring 5b is connected to the rear end of the second pliers body 2, and a second claw 6b is provided on the inner side of the rear end of the second pliers body 2.

[0029] The compression clamp 8 includes a first compression piece 8a and a second compression piece 8b, wherein the first compression piece 8a and the second compression piece 8b are connected via a bearing 10, and the compression piece can rotate around the bearing 10 as a rotation axis.

[0030] The compression clamp 8 has a variety of models of adapter buckles 3, including models with compression piece widths of 1mm, 2mm, 3mm, 5mm, 8mm, and 10mm. The operator can select compression clamps of different widths as needed to adapt to different experimental requirements, and is suitable for the preparation of nerve compression injury models of different experimental animals such as mice, rats, rabbits, beagles, and macaques. Small compression clamps of appropriate width can also be selected to prepare nerve compression models according to different experimental requirements.

[0031] The caliper body is provided with a pressure sensor 4 near the buckle 3, and the pressure sensor 4 sends a sensing signal to the controller 9. The pressure range of the micro pressure sensor is 0-800N.

[0032] like Figure 4 As shown, the controller 9 includes a screen 91 and buttons, and the buttons include a refresh button 92, a power button 93, and a timing button 94. In the controller 9, the screen 91 and the buttons are designed to provide an intuitive and effective interaction between the user and the device.

[0033] Screen 91 is used to display real-time data of the compression experiment, including the real-time applied pressure, duration and average pressure, etc.; refresh button 92 is used to update the information displayed on the screen to ensure that the data seen by the user is the latest. When conducting a nerve compression experiment, the operator may need to view the data of the pressure sensor and the timing information multiple times. The refresh button can be used to quickly obtain the latest measurement results; power button 93 is used to control the power of controller 9; timing button 94 is used to start or stop timing.

[0034] There is a timing panel on the display screen of the pressure sensor. When the force applied by the operator is constant, the real-time system will automatically count the time, making it convenient for the operator to keep the compression time consistent and making the operation easier.

[0035] The pliers body is connected with stepped clamping claws 6, and the clamping teeth are matched step by step.

[0036] The caliper body is provided with a pin hole, and the first caliper body 1 and the second caliper body 2 are connected by a pin shaft 7.

[0037] A finger ring 5 is provided at one end of the pliers body close to the user, and the finger ring 5 is an elliptical ring.

[0038] The clamp body and the crushing clamp 8 are made of medical stainless steel.

[0039] The opening angle range of the crushing clamp 8 is 0-180°.

[0040] The specific steps are as follows:

[0041] Step 1: Preparation before operation. First, the operator checks that the compression clamp, clamp body, pressure sensor and controller are not damaged to ensure the smooth progress of the experiment. According to the experimental requirements and the characteristics of the target nerve, select a compression clamp of appropriate width. After disinfecting the equipment with disinfectant, align and fix the selected compression clamp with the clamp body. Test whether the nerve compression clamp can work properly.

[0042] Step 2: Make a crush injury model. Figure 3 As shown, after locating the target nerve, the operator slowly applies gripping force to the first clamp body and the second clamp body, thereby driving the compression clamp to close and compress the target nerve. The stepped buckle closes step by step and gradually increases the pressure until a predetermined pressure is reached. The applied pressure is monitored by a pressure sensor, and the controller is started to control the precise time of compression. After reaching the predetermined compression time, the compression clamp is slowly released to stop the compression of the nerve, and the controller is turned off.

[0043] Step 3: Post-operation processing. Observe whether the crushed nerve model is successfully constructed, collect relevant data during the crushing experiment, including parameters such as pressure value, crushing time, and animal response, etc., prepare for subsequent experiments, remove the crushing clamp from the crushing clamp, clean and disinfect the used crushing clamp and clamp body for the next experiment.

[0044] The present invention provides an idea and method for an adjustable nerve crush forceps with pressure sensing function. There are many methods and ways to implement the technical solution. The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. An adjustable nerve crush forceps with pressure sensing function, characterized in that: The invention comprises a clamp body and a compression clamp (8), wherein the clamp body comprises a first clamp body (1) and a second clamp body (2), a buckle (3) is provided at one end of the clamp body away from the user, the buckle (3) is connected to the compression clamp (8), and the first clamp body (1) and the second clamp body (2) drive the compression clamp (8) to close and thereby compress the nerve after an external force is applied; The caliper body is provided with a pressure sensor (4) near the buckle (3), and the pressure sensor (4) sends a pressure sensing signal to a controller (9).

2. The adjustable nerve crush forceps with pressure sensing function according to claim 1, characterized in that: The compression clamp (8) comprises a compression piece and a bearing (10), wherein the compression piece comprises a first compression piece (8a) and a second compression piece (8b), wherein the first compression piece (8a) and the second compression piece (8b) are connected via the bearing (10), and the compression piece can rotate around the bearing (10) as a rotation axis.

3. The adjustable nerve crush forceps with pressure sensing function according to claim 2, characterized in that: The width of the compression piece is one of 1mm, 2mm, 3mm, 5mm, 8mm or 10mm.

4. The adjustable nerve crush forceps with pressure sensing function according to claim 3, characterized in that: The controller (9) comprises a screen (91) and buttons, wherein the buttons comprise a refresh button (92), a power button (93) and a timing button (94).

5. The adjustable nerve crush forceps with pressure sensing function according to claim 1, characterized in that: The pliers body is connected with a stepped clamping jaw (6), and the clamping teeth of the stepped clamping jaw (6) are matched step by step.

6. The adjustable nerve crush forceps with pressure sensing function according to claim 1, characterized in that: A pin hole is provided on the surface of the caliper body, and the first caliper body (1) and the second caliper body (2) are connected via a pin shaft (7).

7. The adjustable nerve crush forceps with pressure sensing function according to claim 1, characterized in that: A finger ring (5) is provided at one end of the pliers body close to the user, and the finger ring (5) is an elliptical ring.

8. The adjustable nerve crush forceps with pressure sensing function according to claim 1, characterized in that: The clamp body and the crushing clamp (8) are made of medical stainless steel.

9. The adjustable nerve crush forceps with pressure sensing function according to claim 1, characterized in that: The opening angle range of the crushing clamp (8) is 0-180°.

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