CN213364470U

CN213364470U - Bone fracture plate bending test tool

Info

Publication number: CN213364470U
Application number: CN202022176720.7U
Authority: CN
Inventors: 解凤宝; 史春宝; 沈彪; 郝孟娟
Original assignee: Beijing Chunlizhengda Medical Instruments Co Ltd
Current assignee: Beijing Chunlizhengda Medical Instruments Co Ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-06-04
Anticipated expiration: 2030-09-28

Abstract

The utility model relates to a coaptation board bending test frock relates to medical instrument's experimental frock, and it is including relative loading part and the supporting component who sets up, loading part with the supporting component is respectively including the crossbeam slide rail, two the crossbeam slide rail is parallel to each other and the interval sets up, two the respective sliding connection of the opposite flank of crossbeam slide rail has two supporting seats, four the draw-in groove has been seted up respectively to the one end of keeping away from the crossbeam slide rail of supporting seat, be provided with the roller in the draw-in groove respectively, four the roller is perpendicular with the extending direction of crossbeam slide rail, and the both ends of four rollers can be dismantled through the elastic component respectively and connect on the supporting seat that corresponds, the taut roller of elastic component restricts the roller in the draw-in groove, forms the working gap of centre gripping coaptation board between two rollers of. The accuracy of the bending test detection data of the bone fracture plate can be improved.

Description

Bone fracture plate bending test tool

Technical Field

The application relates to a test tool for medical instruments, in particular to a bending test tool for a bone fracture plate.

Background

The bone fracture plate is made of biomedical materials designed in a bionic mode according to the shape of human bones, when the bones in a human body are fractured, the bone fracture plate can be connected to the fractured part through an operation, the bone fracture plate plays a role of a bridge, the fractured part is reconnected and healed by applying external force, and the fractured part is taken out through a secondary operation after healing. The mechanical strength and fatigue performance of the bone fracture plate directly influence the operation effect and the health of the patient, and the quality of the bone fracture plate can be determined only by correct and effective inspection.

The existing bone plate bending test detection device has the defect of inaccurate detection data in the test process, and the performance of a product is difficult to accurately and effectively evaluate.

SUMMERY OF THE UTILITY MODEL

In order to improve the accuracy of bone plate bending test detection data, the application provides a bone plate bending test frock.

The application provides a bone plate bending test frock adopts following technical scheme:

the utility model provides a coaptation board bending test frock, includes relative loading part and the supporting component who sets up, loading part with the supporting component is respectively including the crossbeam slide rail, two the crossbeam slide rail is parallel to each other and the interval sets up, two the relative side of crossbeam slide rail sliding connection has two supporting seats separately, four the draw-in groove has been seted up respectively to the one end of keeping away from the crossbeam slide rail of supporting seat, be provided with the roller in the draw-in groove respectively, four the roller is perpendicular with the extending direction of crossbeam slide rail, and the both ends of four rollers can be dismantled through the elastic component respectively and connect on the supporting seat that corresponds, the taut roller of elastic component restricts the roller in the draw-in groove, forms the working gap of centre gripping coaptation board between two rollers of loading part and.

By adopting the technical scheme, when the bone fracture plate is subjected to a bending test, the bone fracture plate is clamped in a working gap between the four roll shafts, the loading part is used for applying pressure to the bone fracture plate, the supporting part can be used for supporting the bone fracture plate, and then the mechanical strength and the fatigue performance of the bone fracture plate are detected through the deformation degree of the bone fracture plate; before detection, the four supporting seats are required to move along the cross beam sliding rails respectively, the positions of the four roller shafts are adjusted, the distance between the two roller shafts of the loading component is smaller than the distance between the two roller shafts of the supporting component, the force application points of the two roller shafts with the narrower distance to the bone fracture plate are located between the force application points of the two roller shafts with the wider distance to the bone fracture plate, then pressure is applied to the bone fracture plate through the loading component, the supporting component supports the bone fracture plate, the four roller shafts with the dispersed positions apply force to the bone fracture plate, the stress of the bone fracture plate is dispersed, the bone fracture plate is prevented from being damaged due to stress concentration, and therefore the accuracy of bending test detection; the elastic part can be dismantled the roller with the supporting seat and be connected, can conveniently adapt to the roller of different models in the change, and the elastic part is exerted the pulling force to the roller, with the roller restriction in the draw-in groove, can restrict the position of roller to make the stable butt joint bone plate application of force of roller.

Optionally, four the supporting seat includes installation department and slider respectively, two the spout has been seted up respectively to the opposite flank of crossbeam slide rail, in the spout that the slider installation of supporting seat corresponds, the installation department can be dismantled with the slider through connecting screw and be connected, the roller is connected on the installation department, the elastic component both ends can be dismantled with installation department and roller respectively and be connected.

By adopting the technical scheme, the mounting part of the supporting seat is connected with the sliding block through the connecting screw, so that the mounting and dismounting can be facilitated.

Optionally, one side of the mounting portion, which faces the cross beam slide rail, is provided with a boss, the boss slides in the slide groove in a matched mode, and the connecting screw penetrates out of the boss and then extends into the slide groove to be connected with the slide block.

Through adopting above-mentioned technical scheme, boss and spout cooperation can lead the removal of installation department.

Optionally, the sliding groove of the cross beam sliding rail is a T-shaped sliding groove, and the sliding block is a T-shaped sliding block matched with the T-shaped sliding groove.

Through adopting above-mentioned technical scheme, can prevent that T type slider from coming off from T type spout.

Optionally, chamfers are respectively machined at two ends of one side, facing the bottom of the T-shaped sliding groove, of the T-shaped sliding block.

Through adopting above-mentioned technical scheme, two chamfers can reduce the area of contact of T type slider and T type spout inner wall to the frictional force that produces during the slip is little, slides easily.

Optionally, the elastic member is a tension spring.

Optionally, every the roller both ends are thread fit respectively and have first set screw, every second set screw is installed respectively to the both sides that are on a parallel with crossbeam slide rail extending direction of supporting seat, the both ends of elastic component have the coupling hook respectively, and the coupling hook at both ends articulates respectively in the pole portion of first set screw and the pole portion of second set screw.

Through adopting above-mentioned technical scheme, when needs detect the coaptation board of different models, dismantle first set screw and second set screw, the roller that changes the adaptation different models coaptation board that can be convenient.

Optionally, the clamping groove is arranged in a V-shaped structure.

Through adopting above-mentioned technical scheme, the draw-in groove of V-arrangement structure has the inner wall of two slopes, and two inner walls support the roller, and stability is high, and two inner wall slopes can adapt to the roller of different diameters.

Optionally, the side of the cross beam slide rail is provided with distance scales.

Through adopting above-mentioned technical scheme, the displacement of supporting seat can refer to the distance scale to improve supporting seat shift position's accuracy, make the measured data more accurate.

Optionally, a mounting groove for mounting the pressure bar is formed in one side, away from the sliding groove, of the cross beam sliding rail of the loading part, and mounting holes for mounting bolts are coaxially formed in two opposite sides of the mounting groove.

Through adopting above-mentioned technical scheme, the depression bar is inserted and is established in the mounting groove to through the bolt and the crossbeam slide rail fixed connection of wearing to establish in the mounting hole, the force application device is connected to the depression bar, gives the coaptation board in the working gap with pressure through loading component transmission.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the four roller shafts with dispersed positions apply force to the bone plates, so that the stress of the bone plates is dispersed, and the bone plates are prevented from being damaged due to stress concentration, thereby improving the accuracy of detection data;

2. the mounting part of the supporting seat is connected with the sliding block through a connecting screw, so that the mounting and dismounting are convenient;

two slope inner walls of the draw-in groove of V-arrangement structure support the roller, and stability is high to can adapt to the roller of different diameters.

Drawings

FIG. 1 is a schematic overall structure diagram of a bone plate bending test fixture in one embodiment.

Fig. 2 is an exploded view of a loading unit in one embodiment.

FIG. 3 is an exploded view of the support base, roller shaft and tension spring in one embodiment.

FIG. 4 is a side view of a mounting portion and roller shaft in one embodiment.

Fig. 5 is a schematic overall structure diagram of a bone plate bending test tool in another embodiment.

Description of reference numerals: 1. a loading member; 2. a support member; 3. a cross beam slide rail; 31. distance scales; 32. a T-shaped chute; 33. mounting grooves; 34. mounting holes; 4. a supporting seat; 41. an installation part; 411. a countersunk hole; 412. a boss; 413. a card slot; 42. a T-shaped slider; 421. chamfering; 43. a connecting screw; 5. a roll shaft; 61. a tension spring; 611. a connecting hook; 62. a bungee cord; 7. a first set screw; 8. a second set screw; 9. a bone plate; 10. a pressure lever.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

The embodiment of the application discloses bone plate bending test tool. Referring to fig. 1, bone plate bending test frock is including relative loading component 1 and the supporting component 2 that sets up, loading component 1 and supporting component 2 include crossbeam slide rail 3 respectively, two supporting seats 4 and two roller 5, two crossbeam slide rails 3 are parallel to each other and the interval sets up, two liang of sliding connection of four supporting seats 4 are in the relative both sides of two crossbeam slide rails 3, four roller 5 are demountable installation respectively and are kept away from crossbeam slide rail 3 one end at four supporting seats 4, and four roller 5 all are perpendicular with crossbeam slide rail 3, form the work clearance that the centre gripping bone plate detected 9 between two roller 5 on two roller 5 of loading component 1 and the supporting component 2. The beam slide rail 3, the supporting seat 4 and the roll shaft 5 are all made of hard metal materials.

The four supporting seats 4 are respectively moved along the beam slide rails 3, so that the distance between the two rollers 5 of the loading part 1 is narrower than the distance between the two rollers 5 of the supporting part 2, and the point of application of the two rollers 5 of the loading part 1 to the bone fracture plate 9 is positioned between the points of application of the two rollers 5 of the supporting part 2. When carrying out bending test, place the coaptation board 9 that will wait to detect in the working gap between four roller 5, then exert pressure to loading component 1, loading component 1's roller 5 gives coaptation board 9 with pressure transmission, two roller 5 of supporting component 2 can support coaptation board 9, four roller 5 of position dispersion are respectively to coaptation board 9 application of force, make the stress comparison dispersion of coaptation board 9, avoid coaptation board 9 to damage because of stress concentration, thereby improve bending test data's accuracy.

Referring to fig. 1, the opposite two sides of two crossbeam slide rails 3 have been seted up the spout respectively, and the open setting in spout both ends, supporting seat 4 slide along the spout, are provided with apart from scale 31 along the extending direction of spout on the side of crossbeam slide rail 3, and supporting seat 4 can follow and reference apart from scale 31 accurate removal. Since the distance between the two supporting seats 4 of the loading part 1 is narrower than the distance between the two supporting seats 4 of the supporting part 2, the cross beam slide rail 3 of the supporting part 2 can be made longer than the cross beam slide rail 3 of the loading part 1.

Referring to fig. 2 and 3, the four supporting seats 4 respectively include an installation portion 41 and a sliding block, the sliding block is slidably installed in the sliding chute, a threaded hole is processed on one side of the sliding block facing the installation portion 41, a counter bore 411 perpendicular to the cross beam sliding rail 3 is formed in the installation portion 41, the counter bore 411 is a through hole and is provided with a connecting screw 43, and the connecting screw 43 penetrates through the sliding chute and is in threaded fit with the threaded hole in the sliding block, so that the installation and the disassembly are convenient. One side of the mounting part 41 facing the cross beam slide rail 3 is attached to the cross beam slide rail 3, and is provided with a long strip-shaped boss 412, the boss 412 is matched and slides in the sliding groove, so that the mounting part 41 can stably move in the sliding groove, and the connecting screw 43 penetrates out of the boss 412 and then is in threaded fit with the sliding block.

Referring to fig. 3, the chute may be processed as a T-shaped chute 32, and the slider may be processed as a T-shaped slider that cooperates with the T-shaped chute 32. In order to facilitate the sliding of the T-shaped slider 42, chamfers 421 may be respectively formed at both ends of the T-shaped slider 42 facing the bottom of the T-shaped chute 32 to reduce the contact area between the T-shaped slider 42 and the inner wall of the T-shaped chute 32, thereby reducing the friction force generated during the sliding.

Referring to fig. 2 and 3, the supporting seats 4 are processed through metal squares, to two supporting seats 4 installed on the same beam slide rail 3, the vertex angles of the supporting seats on one side of the back of each other, which are far away from the beam slide rail 3, are processed to form obtuse-angle grooves, so that the tip ends of the supporting seats 4, which are far away from the beam slide rail 3, form trapezoidal structures, the top of the tip ends are provided with clamping grooves 413, the roller shafts 5 are installed in the clamping grooves 413, the two ends of the roller shafts 5 are respectively connected to the supporting seats 4 through elastic pieces, and the elastic pieces limit the roller shafts.

Referring to fig. 3 and 4, the locking groove 413 is provided in a V-shaped structure having two inclined inner walls capable of supporting the roller 5, and when the roller 5 having different diameters is replaced to fit different types of bone plates 9, the two inner walls of the locking groove 413 can also fit different diameters of the roller 5.

Referring to fig. 3, the end faces of the two ends of each roller shaft 5 are respectively provided with a threaded hole and are in threaded connection with first fixing screws 7, and the two side faces of each supporting seat 4, which are parallel to the extending direction of the cross beam sliding rail 3, are also respectively provided with a threaded hole and are in threaded connection with second fixing screws 8. The first fixing screw 7 and the second fixing screw 8 are used for installing the elastic part, and the elastic part can be detached by detaching the first fixing screw 7 and the second fixing screw 8, so that the roller shafts 5 which are suitable for bone fracture plates 9 of different models can be replaced conveniently.

Referring to fig. 2, in one embodiment, the elastic member may be a tension spring 61, the tension spring 61 has connection hooks 611 at both ends thereof, and the connection hooks 611 at both ends thereof are respectively hooked on the rod portion of the first fixing screw 7 and the rod portion of the second fixing screw 8, and tightening the first fixing screw 7 and the second fixing screw 8 can clamp the connection hooks 611. The connecting hooks 611 at both ends of the tension spring 61 may be replaced by hanging rings as long as the first fixing screw 7 and the second fixing screw 8 can be hooked.

Referring to fig. 5, in another embodiment, the elastic member may be a ring-shaped elastic cord 62, and the elastic cord 62 is hung on the shaft portion of the first fixing screw 7 and the shaft portion of the second fixing screw 8, so that the elastic member can be conveniently mounted and dismounted.

Referring to fig. 1 and 2, a pressing rod 10 is mounted on a force applying device for applying pressure to the loading member 1, and a through hole is formed in the pressing rod 10. The beam slide rail 3 of the loading component 1 is provided with a mounting groove 33 which can be matched and spliced with the pressure lever 10 at one side deviating from the slide groove, and mounting holes 34 which are coaxial with the through holes on the pressure lever 10 are arranged at two opposite sides of the mounting groove 33. During testing, the cross beam slide rail 3 is perpendicular to the pressure lever 10 of the pressure device, the pressure lever 10 is matched and spliced with the mounting groove 33, bolts penetrate through the mounting hole 34 and the through hole of the pressure lever 10, and the pressure lever 10 is fixedly connected with the cross beam slide rail 3.

The implementation principle of the bone plate bending test tool in the embodiment of the application is as follows: the bone fracture plate 9 is placed in a working gap between the loading part 1 and the supporting part 2, the four roller shafts 5 can dispersedly apply force to the bone fracture plate 9, the bone fracture plate 9 is prevented from being damaged due to stress concentration, and therefore the accuracy of detection data is improved; the four roll shafts 5 are hung on the supporting seat 4 through elastic pieces, so that the installation and the disassembly are convenient, and the roll shafts 5 which are suitable for bone fracture plates 9 of different models can be conveniently replaced.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a coaptation board bending test frock which characterized in that: including relative loading part (1) and the supporting component (2) that sets up, loading part (1) with supporting component (2) are respectively including crossbeam slide rail (3), two crossbeam slide rail (3) are parallel to each other and the interval sets up, two the relative side of crossbeam slide rail (3) sliding connection separately has two supporting seats (4), four draw-in groove (413) have been seted up respectively to the one end of keeping away from crossbeam slide rail (3) of supporting seat (4), be provided with roller (5) in draw-in groove (413) respectively, four roller (5) are perpendicular with the extending direction of crossbeam slide rail (3), and can dismantle through the elastic component respectively at the both ends of four roller (5) and connect on corresponding supporting seat (4), the taut roller of elastic component (5) restricts roller (5) in draw-in groove (413), forms centre gripping coaptation board between two roller (5) of loading part (1) and two roller (5) of supporting roll part (2) and coaptation board (9) The working gap of (a).

2. A bone plate bending test tool according to claim 1, characterized in that: four supporting seat (4) are including installation department (41) and slider, two the spout has been seted up respectively to the opposite flank of crossbeam slide rail (3), in the spout that the slider installation of supporting seat (4) corresponds, installation department (41) can be dismantled with the slider through connecting screw (43) and be connected, roller (5) are connected on installation department (41), the elastic component both ends can be dismantled with installation department (41) and roller (5) respectively and be connected.

3. A bone plate bending test tool according to claim 2, characterized in that: the installation department (41) be provided with boss (412) towards crossbeam slide rail (3) one side, boss (412) cooperation is slided in the spout, connecting screw (43) are worn out then are stretched into the spout and are connected with the slider from boss (412).

4. The bone plate bending test tool according to claim 2 or 3, characterized in that: the sliding groove of the cross beam sliding rail (3) is a T-shaped sliding groove (32), and the sliding block is a T-shaped sliding block (42) matched with the T-shaped sliding groove (32).

5. A bone plate bending test tool according to claim 4, characterized in that: and chamfers (421) are respectively processed at two ends of one side of the T-shaped sliding block (42) facing the bottom of the T-shaped sliding groove (32).

6. A bone plate bending test tool according to claim 1, characterized in that: the elastic piece is a tension spring (61).

7. A bone plate bending test tool according to claim 1, characterized in that: every roller (5) both ends are screw-thread fit respectively has first set screw (7), every second set screw (8) are installed respectively to the both sides that are on a parallel with crossbeam slide rail (3) extending direction of supporting seat (4), the both ends of elastic component have coupling hook (611) respectively, and coupling hook (611) at both ends articulate respectively in the pole portion of first set screw (7) and the pole portion of second set screw (8).

8. A bone plate bending test tool according to claim 1, characterized in that: the clamping groove (413) is of a V-shaped structure.

9. A bone plate bending test tool according to claim 1, characterized in that: the side of the beam slide rail (3) is provided with distance scales (31).

10. A bone plate bending test tool according to claim 1, characterized in that: a mounting groove (33) used for mounting the pressure lever (10) is formed in one side, away from the sliding groove, of the cross beam sliding rail (3) of the loading part (1), and mounting holes (34) for mounting bolts are coaxially formed in two opposite sides of the mounting groove (33).