Biomechanical clamp capable of refrigerating

Abstract

The utility model discloses a biomechanical clamp capable of refrigerating. The biomechanical clamp comprises an upper clamp and a lower clamp which are arranged up and down, the clamping mechanism comprises a fixed clamping plate and a movable clamping plate, and the inner side faces of the fixed clamping plate and the movable clamping plate are arranged to be wave-shaped meshing faces. Two guide heat conduction rods are arranged between the fixed clamping plate and the movable clamping plate; the adjusting mechanism is arranged on the side, away from the fixed clamping plate, of the movable clamping plate and used for adjusting the distance between the movable clamping plate and the fixed clamping plate. The refrigerating mechanism comprises a refrigerant groove which is fixedly formed in the side, away from the movable clamping plate, of the fixed clamping plate and used for containing a refrigerant, and an opening of the refrigerant groove is formed upwards; one end of the guide heat conduction rod fixedly penetrates through the fixed clamping plate and extends into the refrigerant groove; the fixing mechanism is arranged on the top face of the fixing clamping plate and used for being fixedly connected with a tensile machine. According to the biomechanical clamp capable of refrigerating, the whole clamp is simple in structure, the operation process is simple and convenient, the production cost is low, and the tendon clamping and pulling effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of biomechanical clamps, in particular to a refrigerated biomechanical clamp. Background Art

[0002] The refrigerated biomechanical fixture (hereinafter referred to as the fixture) involved in the present application is a tool for fixing connective tissue in biomechanical tests of connective tissue (including tendons, ligaments, placentas, etc.); wherein the fixture is used to clamp the two ends of the tendon and then pull it;

[0003] There are three problems in using room temperature clamps for biomechanical experiments. First, the tissue contains a lot of water, which makes it slippery, so the tendon can easily slip out of the clamp; second, the clamping force of the clamp is too large, which can easily damage the tissue, making it impossible to obtain accurate data; third, clamping the ends of the tendon with a large clamping force will cause deformation of both ends of the tendon, causing changes in length; the existing clamps currently use a method of cooling the clamp jaws and freezing the tendon to achieve good freezing and stretching effects, which to a certain extent solves the above three problems; however, when the existing clamps cool the jaws, they need to make major modifications to the inside of the clamp or add new and complex electrical refrigeration equipment, which brings about problems such as difficulty in clamp manufacturing, cumbersome operation and increased cost. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a refrigerated biomechanical clamp.

[0005] The utility model provides a refrigerated biomechanical fixture, comprising an upper fixture and a lower fixture arranged up and down; the upper fixture and the lower fixture both comprise a clamping mechanism, an adjusting mechanism, a refrigeration mechanism and a fixing mechanism; wherein,

[0006] The clamping mechanism comprises a fixed clamping plate and a movable clamping plate arranged in parallel with each other, the inner side surfaces of the fixed clamping plate and the movable clamping plate are arranged as wavy occlusal surfaces with each other; two guide heat-conducting rods are symmetrically arranged between the fixed clamping plate and the movable clamping plate, and the guide heat-conducting rods are made of a material with good heat-conducting effect;

[0007] The adjustment mechanism is arranged on a side of the movable clamping plate away from the fixed clamping plate, and is used to adjust the distance between the movable clamping plate and the fixed clamping plate;

[0008] The refrigeration mechanism comprises a refrigerant tank fixedly arranged on a side of the fixed clamping plate away from the movable clamping plate for containing refrigerant, and the opening of the refrigerant tank is arranged upward; one end of the guide heat-conducting rod is fixedly arranged to pass through the fixed clamping plate and extend into the interior of the refrigerant tank;

[0009] The fixing mechanism is arranged on the top surface of the fixing clamp plate and is used for connecting and fixing with the tensile machine.

[0010] Preferably, a heat conducting plate is further provided inside the refrigerant groove of the lower clamp, and the heat conducting plate is arranged in a Z shape along the height direction of the corresponding refrigerant groove; the top of the heat conducting plate is fixedly connected to one end of the corresponding guide heat conducting rod located inside the refrigerant groove, and the bottom of the heat conducting plate extends into the lower part of the corresponding refrigerant groove for conducting heat.

[0011] Preferably, the heat-conducting guide rod is arranged in a direction perpendicular to the fixed clamping plate; the movable clamping plate is slidably sleeved on the heat-conducting guide rod; and a spring is arranged on the heat-conducting guide rod so as to abut against the fixed clamping plate and the movable clamping plate.

[0012] Preferably, the adjustment mechanism includes a support plate fixedly arranged on the top end of the guide heat-conducting rod, and a stud is threaded through the support plate; the stud is located at the end of the support plate away from the movable splint and a wrench is fixedly arranged, and the end of the stud away from the wrench is fixedly connected to the corresponding movable splint, so as to adjust the position of the corresponding movable splint on the guide heat-conducting rod.

[0013] Preferably, the fixing mechanism comprises a connecting shaft fixedly arranged on the top surface of the fixing splint for connecting with the tensile machine.

[0014] Preferably, a tank cover is provided on the top surface of the refrigerant tank.

[0015] Preferably, the longitudinal cross-section of the wavy occlusal surface is wavy.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The refrigerated biomechanical clamp of the utility model injects refrigerant into the refrigerant tank through the provided refrigeration mechanism, conducts heat through the guide heat-conducting rod, reduces the temperature of the movable splint and the fixed splint, and then realizes the cooling and freezing of the tendon clamped between the movable splint and the fixed splint. By turning the wrench, the distance between the movable splint and the fixed splint is adjusted to clamp the tendon. The whole clamp has a simple structure, a simple and convenient operation process, a low production cost, a good cooling effect, and a good tendon clamping and pulling effect.

[0018] In addition, by providing a wavy occlusal surface between the movable splint and the fixed splint, the clamping and fixing effect on both ends of the tendon can be improved, and the damage to the tendon caused by the serrated splint in the traditional clamp can be avoided.

[0019] It should be understood that the contents described in the summary of the utility model are not intended to limit the key or important features of the embodiments of the utility model, nor are they intended to limit the scope of the utility model.

[0020] Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0022] Figure 1 A schematic structural diagram of a refrigerated biomechanical fixture provided by an embodiment of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the upper fixture after enlargement;

[0024] Numbers in the figure: 1. Upper clamp; 2. Lower clamp; 3. Fixed splint; 4. Movable splint; 5. Wave-shaped engaging surface; 6. Guide heat-conducting rod; 7. Spring; 8. Refrigerant tank; 9. Heat-conducting sheet; 10. Support plate; 11. Stud; 12. Wrench; 13. Connecting shaft. DETAILED DESCRIPTION

[0025] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings.

[0026] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] Early tendon clamps were room temperature clamps, suitable for connective tissues with smaller diameters and / or strengths. The earliest clamps used flat clamps, which were very easy to slip out of the flat clamp. Later, people tried serrated clamps and high friction surface clamps. Both of these methods either introduced new problems or did not improve the slippage of the specimen. Later, people studied and made frozen clamps to solve the problems of poor tendon clamping and damage after clamping.

[0028] Among them, some freezing type clamps use liquid carbon dioxide under high pressure to gasify and absorb heat in a specially designed square groove behind the clamp to cool the clamp jaws and freeze the tendon. Liquid carbon dioxide is transmitted from the high pressure bottle to the square groove through a specially designed pipeline, and the converted gas is discharged from the designed exhaust hole. This method achieves good freezing and stretching effects, and solves the problems of poor tendon clamping effect and damage after clamping.

[0029] Some refrigeration-type clamps also use thermocouples and other cooling methods to cool the jaws, and they all achieve ideal cooling effects;

[0030] The additional electric refrigeration equipment greatly increases the extra cost. The use of the freezing clamp in the above manner requires major modifications to the inside of the clamp or the addition of new and complex equipment, which brings about problems such as difficulty in clamp manufacturing, cumbersome operation and increased costs.

[0031] Therefore, the present application proposes a refrigerated biomechanical clamp, which can directly transform the traditional clamp by adding a refrigerant tank and a heat conductive plate to the traditional clamp to give the clamp a freezing function; on the other hand, the splint surface is improved, and the wavy occlusal surface can better clamp and fix the tendon; and the operation process of the entire device is simple and convenient, the structure is simple, and the production cost is low.

[0032] Please refer to Figures 1-2 The embodiment of the utility model provides a refrigerated biomechanical clamp, comprising an upper clamp 1 and a lower clamp 2 arranged in an upper and lower manner; the upper clamp 1 and the lower clamp 2 clamp and fix the two ends of the tendon respectively;

[0033] The upper clamp 1 and the lower clamp 2 both include a clamping mechanism, an adjusting mechanism, a cooling mechanism and a fixing mechanism; wherein,

[0034] The clamping mechanism comprises a fixed clamping plate 3 and a movable clamping plate 4 which are arranged in parallel with each other. The inner side surfaces of the fixed clamping plate 3 and the movable clamping plate 4 are mutually arranged as wave-shaped occlusal surfaces 5, and the longitudinal section of the wave-shaped occlusal surface 5 is wave-shaped; two guide heat-conducting rods 6 are symmetrically arranged between the fixed clamping plate 3 and the movable clamping plate 4, and the guide heat-conducting rods 6 are made of a material with good heat-conducting effect;

[0035] Among them, the guide heat-conducting rod 6 is arranged in a direction perpendicular to the fixed splint 3; the movable splint 4 is slidably mounted on the guide heat-conducting rod 6; a spring 7 is arranged on the guide heat-conducting rod 6 between the fixed splint 3 and the movable splint 4, and the setting of the spring 7 cooperates with the adjustment component to facilitate the adjustment of the distance between the movable splint 4 and the fixed splint 3, so as to be suitable for clamping and fixing different tendons.

[0036] The refrigeration mechanism includes a refrigerant tank 8 fixedly arranged on the side of the fixed clamping plate 3 away from the movable clamping plate 4 for containing refrigerant, and the opening of the refrigerant tank 8 is arranged upward; one end of the guide heat-conducting rod 6 is fixedly arranged to pass through the fixed clamping plate 3 and extend into the interior of the refrigerant tank 8;

[0037] In a preferred embodiment, a tank cover is provided on the top surface of the refrigerant tank 8 .

[0038] The refrigerant tank 8 and the corresponding fixing clamp plate 3 may be integrally formed, or may be split and fixed together by a fixed connection.

[0039] In a preferred embodiment, a heat conductive sheet 9 is further provided inside the refrigerant groove 8 of the lower clamp 2, and the heat conductive sheet 9 is made of a material with a heat conductive effect; the heat conductive sheet 9 is arranged in a Z shape along the height direction of the corresponding refrigerant groove 8; the top of the heat conductive sheet 9 is fixedly connected to one end of the corresponding guide heat conductive rod 6 located inside the refrigerant groove 8, and the bottom of the heat conductive sheet 9 extends into the lower part of the corresponding refrigerant groove 8 for conducting heat.

[0040] Since the upper fixture 1 and the lower fixture 2 are arranged in an upper and lower distribution on the tensile machine, the guide heat-conducting rod 6 of the upper fixture 1 is located at the lower part of the corresponding movable clamp 4 and the fixed clamp 3, which also results in that one end of the guide heat-conducting rod 6 that penetrates into the refrigerant tank 8 of the upper fixture 1 is located at the lower part of the refrigerant tank 8, and the guide heat-conducting rod 6 can be in full contact with the refrigerant in the refrigerant tank 8 for a long time, and the cooling effect on the movable clamp 4 and the fixed clamp 3 in the upper fixture 1 is good;

[0041] The guide heat-conducting rod 6 of the lower clamp 2 is located at the upper part of the corresponding movable splint 4 and the fixed splint 3, which means that the end of the guide heat-conducting rod 6 that penetrates into the refrigerant groove 8 of the lower clamp 2 is located at the upper part of its refrigerant groove 8, which leads to a short contact time between the guide heat-conducting rod 6 and the refrigerant in the refrigerant groove 8, thereby reducing the cooling effect on the movable splint 4 and the fixed splint 3 in the lower clamp 2. Therefore, a heat-conducting plate 9 is added to the refrigerant groove 8 of the lower clamp 2, and the top of the heat-conducting plate 9 is connected to the end of the guide heat-conducting rod 6 in the lower clamp 2 that penetrates into the refrigerant groove 8, and the bottom of the heat-conducting plate 9 is located at the lower part of the refrigerant groove 8 and is in contact with the refrigerant for a sufficient long time. Through the setting of the heat-conducting plate 9, the heat of the movable splint 4, the fixed splint 3 and the guide heat-conducting rod 6 in the lower clamp 2 is transferred to the refrigerant in the refrigerant groove 8 of the lower clamp 2, thereby realizing continuous heat conduction.

[0042] An adjustment mechanism is provided on a side of the movable splint 4 away from the fixed splint 3, and is used to adjust the distance between the movable splint 4 and the fixed splint 3;

[0043] In a preferred embodiment, the adjustment mechanism includes a support plate 10 fixedly arranged at the top end of the guide heat conducting rod 6, and a stud 11 is threaded through the support plate 10; the stud 11 is located at the end of the support plate 10 away from the movable splint 4 and is fixedly provided with a wrench 12 for assisting the rotation of the stud 11, and the end of the stud 11 away from the wrench 12 is fixedly connected to the corresponding movable splint 4 for adjusting the position of the corresponding movable splint 4 on the guide heat conducting rod 6.

[0044] The fixing mechanism is arranged on the top surface of the fixing clamp plate 3 and is used for connecting and fixing with the tensile machine.

[0045] In a preferred embodiment, the fixing mechanism includes a connecting shaft 13 fixedly disposed on the top surface of the fixing clamp plate 3 for connecting with the tensile machine.

[0046] The working principle of this utility model:

[0047] Implementation Method 1

[0048] Immerse the upper clamp 1 and the lower clamp 2 in liquid nitrogen, take them out after the liquid nitrogen stops boiling, connect the upper clamp 1 and the lower clamp 2 to the tensile machine through two connecting shafts 13, pour the liquid nitrogen into the refrigerant tank 8, rotate the wrenches 12 of the upper clamp 1 and the lower clamp 2, and adjust the distance between the respective movable clamps 4 and the fixed clamps 3 to a suitable position (depending on the thickness of the sample); put the part of the sample to be clamped between the movable clamp 4 and the fixed clamp 3 of the upper clamp 1, rotate the wrench 12 of the upper clamp 1, and clamp the sample; adjust the lower clamp 2 so that the other end of the sample to be clamped is between the movable clamp 4 and the fixed clamp 3 of the lower clamp 2, rotate the wrench 12 in the lower clamp 2, and clamp the sample.

[0049] Implementation Method 2

[0050] Through two connecting shafts 13, the upper clamp 1 and the lower clamp 2 are connected to the tensile machine respectively, and liquid nitrogen is poured into the refrigerant tank 8. The distance between the movable clamp 4 and the fixed clamp 3 in the upper clamp 1 and the lower clamp 2 is adjusted, and the temperature sensor is clamped between the movable clamp 4 and the fixed clamp 3; after the temperature between the clamps reaches the target temperature, the temperature sensor is removed. Rotate the wrench 12 of the upper clamp 1 and the lower clamp 2, adjust the distance between the movable clamp 4 and the fixed clamp 3 to a suitable position, put the part of the sample to be clamped between the movable clamp 4 and the fixed clamp 3 of the upper clamp 1, rotate the wrench 12 in the upper clamp 1, and clamp the sample; adjust the lower clamp 2 so that the other end of the sample to be clamped is between the movable clamp 4 and the fixed clamp 3 of the lower clamp 2, and rotate the wrench 12 in the lower clamp 2 to clamp the sample.

[0051] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0052] In the description of this specification, the description of the terms "one embodiment", "some embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0053] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A refrigerated biomechanical fixture, characterized in that: It includes an upper clamp and a lower clamp arranged up and down; the upper clamp and the lower clamp both include a clamping mechanism, an adjusting mechanism, a cooling mechanism and a fixing mechanism; wherein, The clamping mechanism comprises a fixed clamping plate and a movable clamping plate arranged in parallel with each other, the inner side surfaces of the fixed clamping plate and the movable clamping plate are arranged as wavy occlusal surfaces with each other; two guide heat-conducting rods are symmetrically arranged between the fixed clamping plate and the movable clamping plate, and the guide heat-conducting rods are made of a material with good heat-conducting effect; The adjustment mechanism is arranged on a side of the movable clamping plate away from the fixed clamping plate, and is used to adjust the distance between the movable clamping plate and the fixed clamping plate; The refrigeration mechanism comprises a refrigerant tank fixedly arranged on a side of the fixed clamping plate away from the movable clamping plate for containing refrigerant, and the opening of the refrigerant tank is arranged upward; one end of the guide heat-conducting rod is fixedly arranged to pass through the fixed clamping plate and extend into the interior of the refrigerant tank; The fixing mechanism is arranged on the top surface of the fixing clamp plate and is used for connecting and fixing with the tensile machine.

2. The refrigerated biomechanical fixture according to claim 1, characterized in that: A heat conducting plate is also provided inside the refrigerant groove of the lower clamp, and the heat conducting plate is arranged in a Z shape along the height direction of the corresponding refrigerant groove; the top of the heat conducting plate is fixedly connected to one end of the corresponding guide heat conducting rod located inside the refrigerant groove, and the bottom of the heat conducting plate extends into the lower part of the corresponding refrigerant groove for conducting heat.

3. The refrigerated biomechanical fixture according to claim 1, characterized in that: The heat-conducting guide rod is arranged in a direction perpendicular to the fixed clamping plate; the movable clamping plate is slidably sleeved on the heat-conducting guide rod; and a spring is arranged on the heat-conducting guide rod in contact between the fixed clamping plate and the movable clamping plate.

4. The refrigerated biomechanical fixture according to claim 1, characterized in that: The adjustment mechanism includes a support plate fixedly arranged on the top end of the guide heat-conducting rod, and a stud is threaded through the support plate; the stud is located at the end of the support plate away from the movable clamping plate and a wrench is fixedly arranged, and the end of the stud away from the wrench is fixedly connected to the corresponding movable clamping plate for adjusting the position of the corresponding movable clamping plate on the guide heat-conducting rod.

5. The refrigerated biomechanical fixture according to claim 1, characterized in that: The fixing mechanism comprises a connecting shaft fixedly arranged on the top surface of the fixing clamp plate and used for connecting with the tensile machine.

6. The refrigerated biomechanical fixture according to claim 1, characterized in that: A tank cover is arranged on the top surface of the refrigerant tank.

7. The refrigerated biomechanical fixture according to claim 1, characterized in that: The longitudinal section of the wavy occlusal surface is wavy.

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