CN111419180B

CN111419180B - Mechanical pain measuring instrument

Info

Publication number: CN111419180B
Application number: CN202010218547.4A
Authority: CN
Inventors: 周鸿锁; 张艳洁; 董默; 赵祥坤; 周志尊
Original assignee: Mudanjiang Medical University
Current assignee: Mudanjiang Medical University
Priority date: 2020-03-25
Filing date: 2020-03-25
Publication date: 2023-05-23
Anticipated expiration: 2040-03-25
Also published as: CN111419180A

Abstract

The invention discloses a mechanical pain measuring instrument, which comprises a shell, wherein the inner wall of the upper part of the shell is provided with threads, the inner wall of the shell, which is provided with threads, is provided with a check ring, a push rod penetrating through the bottom of the shell is movably arranged in the shell, the surface of the push rod between the top end of the outer part of the shell and a piston plate closest to the push rod is provided with scales, the top end of the push rod in the shell is fixedly provided with a needle mounting plate, the needle mounting plate is provided with a needle rod penetrating through the check ring, the push rod between the needle mounting plate and the bottom end of the shell is provided with three non-adjacent piston plates, wherein the inner wall of the shell, which is closest to the needle mounting plate, is fixedly provided with a damping plate, and a communication hole is arranged on the damping plate, and a first spring is arranged between the piston plate closest to the bottom of the shell and the bottom of the shell.

Description

Mechanical pain measuring instrument

Technical Field

The invention relates to the technical field of pain measuring devices, and in particular belongs to a mechanical pain measuring instrument.

Background

Pain is a sensation of injury or paresthesia in an animal matrix, and the degree of pain is generally not intuitively obtained and is currently measured mainly by pain testing devices.

The existing measuring devices are mainly divided into mechanical and electronic measuring devices. The electronic pain measuring instrument is convenient to use and quick to measure, but because the measuring result is influenced by the humidity and the temperature of the measuring environment, the measuring data is inaccurate, and the electronic pain measuring instrument has higher price and is easy to damage during use. The mechanical pain measuring instrument has the advantages of convenient carrying and good durability, but the needle body needs to be manually pushed in the pain measuring process, and the measuring error is larger due to the unstable stress difference in the process of the movement of the needle body caused by the manual pushing of the needle body; chinese invention patent, patent No.: CN201510656872.8 discloses a portable mechanical pain sensitive measuring device, which uses a spring as a stress member, and applies pressure to a measured animal by the elasticity of the spring, but because the elasticity of the spring is related to the compressed length of the spring, the deformation is recovered to be instant action, the difference of the externally applied elasticity at each stage is large, and the problem of unstable stress in the process of needle movement still exists.

Disclosure of Invention

The invention aims to provide a mechanical pain measuring instrument, which can enable a needle body to slowly move and reduce the problem of unstable stress in the process of movement of the needle body.

In order to solve the problems, the technical scheme adopted by the invention is as follows:

the utility model provides a mechanical pain measuring instrument, includes the shell, the shell be open-top's drum, the upper portion inner wall of shell be equipped with the screw thread, the retaining ring is installed to the shell inner wall that is equipped with screw thread department, the shell in movable mounting have the push rod that passes the shell bottom, the push rod be located the outside top of shell to rather than being equipped with the scale on the push rod surface between the nearest piston board, the push rod top fixed mounting that is located the shell has the probe mounting panel, the probe mounting panel on install the needle bar that passes the retaining ring, the push rod between probe mounting panel and the shell bottom on install three non-adjacent piston board, wherein on the shell inner wall between two piston boards that are closest to the probe mounting panel, the damping board on be equipped with the intercommunicating pore, install first spring between piston board and the shell bottom that are closest to the shell bottom.

Further, the bottom of shell install the button shell, the button shell in install button and second spring, the button include contact, fixture block and button body, the button body be "mouthful" font, the contact set up on the outer terminal surface of the button body, the fixture block set up on the interior terminal surface of the button body of the opposite one side of contact, the second spring install on the outer terminal surface of the button body of fixture block department, the scale on be equipped with the fixed slot of a plurality of insertable fixture block.

Further, an adjusting groove is formed in the retainer ring.

Further, the length of the needle bar is smaller than the height of the threads on the inner wall of the shell.

Further, rubber rings are arranged on the end surfaces of the piston plate and the probe mounting plate, which are in contact with the inner wall of the shell.

Further, damping medium is filled between the damping plates and the piston plates at the two sides of the damping plates, and the sum of the distances between the damping plates and the piston plates at the two sides of the damping plates is not less than twice of the height of threads on the inner wall of the shell.

Compared with the prior art, the invention has the following implementation effects: the invention provides power for the upward movement of the push rod through the first spring in the shell, and the damping plate and the damping medium are arranged in the shell, so that the instantaneous impact force generated by the first spring to the push rod is counteracted, the push rod can slowly move upwards under the flow of the damping medium at the two sides of the damping plate, meanwhile, the power generated by the spring at each stage when the push rod moves is stable, the measurement result of the pain measuring instrument is stable, and the error is reduced; in addition, the button shell arranged on the shell is used for controlling the movement of the push rod, so that the test result is conveniently read, the accuracy of the test result reading is improved, and the pain measuring instrument is more convenient to use.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a schematic structural view of the present invention.

Fig. 3 is an enlarged view at a in fig. 2.

Fig. 4 is a front view of the damping plate.

Fig. 5 is a front view of the retainer ring.

Fig. 6 is a schematic structural view of a push rod with a piston plate mounted thereto.

Fig. 7 is a schematic structural view of the button.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements to be referred to must have a specific direction to construct and operate in a specific direction, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Example 1

As shown in fig. 1 to 5, the mechanical pain measuring instrument comprises a housing 1, wherein the housing 1 is a cylinder with an opening at the top, a thread 12 is arranged on the inner wall of the upper part of the housing 1, a retainer ring 8 is arranged on the inner wall of the housing 1 provided with the thread 12, an adjusting groove 81 is arranged on the retainer ring 8, the retainer ring 8 can be rotated by inserting a tool into the adjusting groove 81, and the position of the retainer ring 8 on the inner wall of the housing 1 is adjusted. The movable mounting has the push rod 4 that passes the bottom of shell 1 in the shell 1, be located the outside push rod 4 top fixed mounting of shell 1 and have handle 41, pulling push rod 4 when convenient operation, and be located the inside push rod 4 top fixed mounting of shell 1 and have the needle mounting panel 7, install the needle bar 9 that passes retaining ring 8 on the needle mounting panel 7, the length of needle bar 9 is less than the height of screw thread 12 on the shell 1 inner wall, install three non-adjacent piston board 5 on the push rod 4 between needle mounting panel 7 and the shell 1 bottom, wherein push rod 4 is located the outside top of shell 1 to the push rod 4 surface between the piston board 5 that is closest rather than being equipped with scale 42, can confirm the distance that needle bar 9 moved through scale 42.

The damping device comprises a shell 1, a piston plate 5, a damping plate 6, a communication hole 61, damping medium 13, a piston plate 5, a damping medium 13 and a push rod 4, wherein the piston plate 5 is closest to the bottom of the shell 1, a first spring 10 is arranged between the piston plate 5 and the bottom of the shell 1 and is used for providing upward moving power for the push rod 4, the damping plate 6 is fixedly arranged on the inner wall of the shell 1 between the two piston plates 5 closest to the probe mounting plate 7, the communication hole 61 is arranged on the damping plate 6, the damping medium 13 is filled between the damping plate 6 and the piston plates 5 at the two sides of the damping plate 6, liquid water or oil can be used as the damping medium 13, and air can also be used as the damping medium 13.

The sum of the distances between the damping plate 6 and the piston plates 5 on the two sides of the damping plate is equal to twice the height of the threads 12 on the inner wall of the shell 1, the needle bar 9 is not blocked from extending out of the top of the shell 1, and rubber rings 51 are arranged on the end surfaces of the piston plates 5 and the probe mounting plates 7, which are in contact with the inner wall of the shell 1, so as to prevent leakage of the damping medium 13.

Example 2

As shown in fig. 1-7, on the basis of embodiment 1, the bottom of the casing 1 is further screwed with a button shell 2, a button 3 and a second spring 11 are installed in the button shell 2, the button 3 comprises a contact 31, a clamping block 33 and a button body 32, the button body 32 is shaped like a Chinese character 'kou', the contact 31 is arranged on the outer end face of the button body 32, the clamping block 33 is arranged on the inner end face of the button body 32 on the opposite side of the contact 31, the second spring 11 is installed on the outer end face of the button body 32 at the position of the clamping block 33, the second spring 11 pushes part of the contact 31 of the button 3 out of the button shell 2, a plurality of fixing grooves 40 capable of being inserted into the clamping block 33 are arranged on a scale 42, and after the clamping block 33 is inserted into the fixing grooves 40, the push rod 4 can be clamped, so that the push rod 4 stops moving.

When the pain measuring instrument is used, firstly, a tool is used for adjusting the retainer ring 8 to a proper position, the needle bar 9 extends out of the top of the shell 1, then the contact 31 is pressed, the clamping block 33 is moved out of the fixed groove 40, then the handle 41 of the push rod 4 is held to pull the push rod 4 downwards to a proper position, the contact 31 is loosened, the clamping block 33 is inserted into the fixed groove 40, and the scale value X at the moment is recorded by taking the surface of the button shell 2 as a reference; then the needle bar 9 of the device is aligned with the sole of the white mouse, the position of the pain measuring instrument is kept still, the contact 31 is pressed, the clamping block 33 is moved out of the fixed groove 40, the first spring 10 pushes the push rod 4, the needle bar 9 slowly moves towards the sole of the white mouse under the obstruction of the damping plate 6 and the damping medium 13, at the moment when the white mouse lifts the foot suddenly, the contact 31 is loosened, the clamping block 33 is inserted into the fixed groove 40, the pain measuring instrument is taken out, the scale value Y at the moment is recorded, the difference value between X and Y is calculated to obtain the pain threshold, the handle 41 is pulled by the spring tension meter, and the tension value when the Y position of the push rod 4 is positioned on the surface of the button shell 2 is measured, so that the pain threshold is obtained.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a mechanical pain measuring instrument, includes the shell, the shell be open-top's drum, its characterized in that: the upper inner wall of the shell is provided with threads, the inner wall of the shell provided with the threads is provided with a retainer ring, a push rod penetrating through the bottom of the shell is movably arranged in the shell, scales are arranged on the surface of the push rod between the top end of the outer part of the shell and a piston plate closest to the push rod, a needle mounting plate is fixedly arranged at the top end of the push rod in the shell, a needle rod penetrating through the retainer ring is arranged on the needle mounting plate, three non-adjacent piston plates are arranged on the push rod between the needle mounting plate and the bottom end of the shell, a damping plate is fixedly arranged on the inner wall of the shell between the two piston plates closest to the needle mounting plate, a communication hole is arranged on the damping plate, and a first spring is arranged between the piston plate closest to the bottom of the shell and the bottom of the shell;

the button shell is installed to the bottom of shell, the button shell in install button and second spring, the button include contact, fixture block and button body, the button body be "mouthful" font, the contact set up on the outer terminal surface of the button body, the fixture block set up on the interior terminal surface of the button body of the opposite one side of contact, the second spring install on the outer terminal surface of the button body of fixture block department, the scale on be equipped with the fixed slot of a plurality of insertable fixture block.

2. A mechanical pain measurement instrument according to claim 1, wherein: the check ring is provided with an adjusting groove.

3. A mechanical pain measurement instrument according to claim 1, wherein: the length of the needle bar is smaller than the height of the threads on the inner wall of the shell.

4. A mechanical pain measurement instrument according to claim 1, wherein: and rubber rings are arranged on the end surfaces of the piston plate and the probe mounting plate, which are in contact with the inner wall of the shell.

5. A mechanical pain measurement instrument according to claim 1, wherein: damping medium is filled between the damping plates and the piston plates at two sides of the damping plates, and the sum of the distances between the damping plates and the piston plates at two sides of the damping plates is not less than twice of the height of threads on the inner wall of the shell.