CN-224220282-U - Skeletal muscle injury experimental device

CN224220282UCN 224220282 UCN224220282 UCN 224220282UCN-224220282-U

Abstract

A skeletal muscle injury experimental device relates to the technical field of medical experimental equipment and comprises an experimental table, a support, a sleeve, a sliding rod, a balancing weight, an experimental part and a locking part, wherein the support is fixedly connected to the experimental table, the sleeve is connected to the support, the two ends of the sliding rod are detachably connected with the balancing weight and the experimental part, the sleeve is provided with a sleeve cavity, the sliding rod is slidably connected with the sleeve, at least part of the sliding rod is located in the sleeve cavity, the balancing weight is located outside the sleeve cavity, the locking part is respectively connected with the sleeve and the sliding rod, the sliding rod can be locked at a preset height of the sleeve by the locking part, and the sliding rod can be unlocked when the locking part is opened, so that the sliding rod moves along the sleeve cavity under the action of gravity and drives the experimental part to be in downward abutting joint or approach to the experimental table. The utility model provides a skeletal muscle injury experimental device, which aims to solve the technical problems of complex operation, poor experimental repeatability and poor stability of experimental results in the prior art.

Inventors

SHEN JUNMIN
YIN PENGBIN
ZHANG LICHENG
CAO FUMING
ZHANG QINXIANG
SUN XINYU
YANG LIMING
Chang Feifan
CHEN JUNYU
CHEN MING
LI YI

Assignees

中国人民解放军总医院第四医学中心

Dates

Publication Date: 20260512
Application Date: 20250206

Claims (10)

1. The skeletal muscle injury experimental device is characterized by comprising an experimental table, a bracket, a sleeve, a sliding rod, a balancing weight, an experimental piece and a locking piece; The device comprises a support, a sleeve, a sliding rod, a balancing weight, a test piece and a test piece, wherein the support is fixedly connected to the test table, the sleeve is connected to the support, the sleeve is positioned above the test table, and the bottom of the sleeve can be arranged at intervals with the test table; The sleeve is provided with a sleeve cavity, the sleeve cavity extends along the axial direction of the sleeve and is provided with openings at two ends, the sliding rod is connected with the sleeve in a sliding way, and at least part of the sliding rod is positioned in the sleeve cavity; The locking piece is respectively connected with the sleeve and the sliding rod, the locking piece can enable the sliding rod to be locked at the preset height of the sleeve, and the locking piece can unlock the sliding rod when being opened, so that the sliding rod moves along the sleeve cavity under the action of gravity and drives the experimental piece to downwards abut against or be close to the experimental bench.
2. The skeletal muscle injury experiment device of claim 1, wherein the sleeve is provided with a plurality of locking holes along an axial direction of the sleeve, each locking hole penetrating the sleeve; Along the axial direction of the sliding rod, the sliding rod is provided with one or more matching holes, and each matching hole penetrates through the sliding rod; The locking piece passes through the locking hole and the matching hole so as to lock the sliding rod at the preset height of the sleeve.
3. The skeletal muscle injury assay device of claim 2, wherein the spacing between each adjacent two of the plurality of locking holes is equal; The space between every two adjacent matching holes in the plurality of matching holes is equal; the distance between two adjacent locking holes is equal to the distance between two adjacent matching holes; The slide bar is also provided with a plurality of scale mark grooves configured to be flush with the top end of the sleeve when the locking hole is coaxial with the mating hole.
4. The skeletal muscle injury test device of claim 3, wherein the number of said locking holes is 10, the aperture of said locking holes is 0.5cm, and the distance between two adjacent locking holes is 1cm.
5. The skeletal muscle injury test device of claim 1, wherein the sleeve has a length of 15cm-25cm, a dimension between the bottom of the sleeve and the test table of 8cm-13cm, an outer diameter of the sleeve of 1.8cm-2.5cm, and an inner diameter of the sleeve of 0.8cm-1.8cm; The length of the sliding rod is 30cm-50cm, the outer diameter of the sliding rod is 0.8cm-1.8cm, the bottom of the sliding rod is provided with a second threaded hole matched with the experimental piece, and the diameter of the second threaded hole is 0.3cm-1cm; The sliding rod is made of stainless steel, and the mass of the sliding rod is 200g-300g; the bottom of the experimental part is in a cambered surface shape or a hemispherical shape.
6. The skeletal muscle injury test device of claim 5, wherein the sleeve has a length of 20cm, a dimension between the bottom of the sleeve and the test bench of 10cm, an outer diameter of the sleeve of 2cm, and an inner diameter of the sleeve of 1.5cm; The length of the sliding rod is 40cm, the outer diameter of the sliding rod is 1cm, the diameter of the second threaded hole is 0.5cm, and the mass of the sliding rod is 240g; the bottom of the experimental part is hemispherical with the diameter of 1 cm.
7. The skeletal muscle injury test device of claim 1, wherein the sliding rod is threadably connected to the weight and the sliding rod is threadably connected to the test piece.
8. The skeletal muscle injury experimental device of claim 1, wherein a bottom of the balancing weight is provided with a balancing weight threaded hole in threaded connection with the sliding rod, and a top of the balancing weight is provided with a balancing weight threaded column capable of being matched with the balancing weight threaded hole; Or the bottom of balancing weight be provided with the counter weight screw thread post of slide bar spiro union, the top of balancing weight be provided with can with counter weight screw thread post complex counter weight screw hole.
9. The skeletal muscle injury test device of claim 1, wherein the weight comprises one or more of 500g, 750g, 1000g, 1250g, 1500g, 1750g, and 2000 g; the number of the experimental pieces is multiple, and the bottom shapes of different experimental pieces are different.
10. The skeletal muscle injury test device of claim 1, wherein the test bench is a metal plate structure; The table top of the experiment table is provided with a fixing structure, and the fixing structure comprises a binding belt; The bottom of the experiment table is connected with an anti-skid structure; The sleeve is fixedly connected to the support and the position of the sleeve on the support is adjustable.

Description

Skeletal muscle injury experimental device Technical Field The utility model relates to the technical field of medical experimental equipment, in particular to a skeletal muscle injury experimental device. Background Skeletal muscle injury is one of the most common types of injury in various sports. Among all athletic wounds, muscle damage accounts for a significant proportion, especially blunt contusions and traction injuries, with an incidence of over about ninety percent. Blunt contusions are caused by the direct action of blunt forces on muscle tissue, most commonly seen in high intensity counterexercise, quadriceps and gastrocnemius muscles are the most affected sites. Skeletal muscle blunt contusions can be followed by a series of pathological processes such as myofiber rupture, hematoma formation, and inflammatory cell infiltration. These reactions can lead to muscle microcirculation disturbance and may further cause fibrosis, significantly affecting the structure and function of the muscle. Although the muscles have a certain self-repairing ability, complete recovery is often difficult to achieve, and long-term may impair exercise functions or even shorten exercise careers. In order to better study the pathological mechanism and repair conditions of skeletal muscle injury, researchers have generally used animal models to simulate clinical injury situations. The current modeling means are mainly blunt contusions, such as using heavy free fall to hit target muscles or transmitting impact force through wedges. However, the conventional method has various problems of complicated operation, poor experimental repeatability, and poor stability of experimental results. For example, the height of the weight is difficult to maintain in perfect agreement, friction may exist between the wedge and the target muscle, and these problems all affect the accuracy of the model and the stability of the experimental results. Disclosure of utility model The utility model aims to provide a skeletal muscle injury experimental device, which solves the technical problems of complex operation, poor experimental repeatability and poor stability of experimental results in the prior art to a certain extent. In order to achieve the above object, the present utility model provides the following technical solutions: a skeletal muscle injury experimental device comprises an experimental table, a bracket, a sleeve, a sliding rod, a balancing weight, an experimental piece and a locking piece; The device comprises a support, a sleeve, a sliding rod, a balancing weight, a test piece and a test piece, wherein the support is fixedly connected to the test table, the sleeve is connected to the support, the sleeve is positioned above the test table, and the bottom of the sleeve can be arranged at intervals with the test table; The sleeve is provided with a sleeve cavity, the sleeve cavity extends along the axial direction of the sleeve and is provided with openings at two ends, the sliding rod is connected with the sleeve in a sliding way, and at least part of the sliding rod is positioned in the sleeve cavity; The locking piece is respectively connected with the sleeve and the sliding rod, the locking piece can enable the sliding rod to be locked at the preset height of the sleeve, and the locking piece can unlock the sliding rod when being opened, so that the sliding rod moves along the sleeve cavity under the action of gravity and drives the experimental piece to downwards abut against or be close to the experimental bench. In any of the above-mentioned aspects, optionally, the sleeve is provided with a plurality of locking holes along an axial direction of the sleeve, each of the locking holes penetrating through the sleeve; Along the axial direction of the sliding rod, the sliding rod is provided with one or more matching holes, and each matching hole penetrates through the sliding rod; The locking piece passes through the locking hole and the matching hole so as to lock the sliding rod at the preset height of the sleeve. In any of the above solutions, optionally, in the plurality of locking holes, a space between every two adjacent locking holes is equal; The space between every two adjacent matching holes in the plurality of matching holes is equal; the distance between two adjacent locking holes is equal to the distance between two adjacent matching holes; The slide bar is also provided with a plurality of scale mark grooves configured to be flush with the top end of the sleeve when the locking hole is coaxial with the mating hole. In any of the above technical solutions, optionally, the number of the locking holes is 10, the aperture of the locking holes is 0.5cm, and the interval between two adjacent locking holes is 1cm. In any of the above technical solutions, optionally, the length of the sleeve is 15cm-25cm, the dimension between the bottom of the sleeve and the laboratory bench is 8cm-13cm, the outer diameter of the sleeve is