CN112370221B

CN112370221B - Lumbar vertebra centrum examination mould tool system

Info

Publication number: CN112370221B
Application number: CN202011158587.0A
Authority: CN
Inventors: 江伟; 魏崇斌; 黄仁宏
Original assignee: Tianyan Medical Equipment Co ltd
Current assignee: Tianyan Medical Equipment Co ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2022-09-30
Anticipated expiration: 2040-10-26
Also published as: CN112370221A

Abstract

The invention discloses a lumbar vertebra centrum test mould tool system, which comprises a test mould body, clamping pincers and a universal screwdriver, wherein the test mould body comprises a test mould body and an adjusting plate, a through hole is formed in the test mould body, a lifting column is arranged at one end of the adjusting plate, the lifting column extends into the through hole, an opening is formed in the lifting column, and a lifting structure and a self-locking structure are arranged in the opening; the height of the lifting column can be adjusted by matching the extending structure with the universal screwdriver, so that the height of the test die body can be adjusted, the test die body does not need to be taken down from an operation position in the height adjusting process, and a proper prosthesis specification can be found without replacing the test die bodies with different specifications for many times; the self-locking structure can lock the position of the lifting column at any time in the process of adjusting the height of the extending structure, the lifting column cannot fall back due to the pressure of lumbar vertebrae, and meanwhile, once the height of the test die body is determined, the self-locking structure can cancel the locking function, so that the lifting column naturally falls back.

Description

Lumbar vertebra centrum examination mould tool system

Technical Field

The invention relates to the technical field of lumbar vertebral body replacement, in particular to a lumbar vertebral body test tool system.

Background

The lumbar vertebra vertebral body replacement operation is used for treating lumbar vertebra damage and pathological changes, the operation can recover the stability and the moving function of the damaged lumbar vertebra section, the degeneration of the adjacent sections caused by the fusion of the lumbar vertebra vertebral body prosthesis can be avoided to be accelerated in theory, and the development is relatively perfect. In the lumbar vertebrae joint replacement operation, at first need be the lumbar vertebrae excision of pathological change, install the lumbar vertebrae prosthesis in excision position, and the high specification of lumbar vertebrae prosthesis needs to use the lumbar vertebrae examination mould fixed before the installation of lumbar vertebrae prosthesis, and the concrete way is that the lumbar vertebrae examination mould of using the instrument with different specifications is placed in pathological change department to confirm suitable prosthesis specification, but among the prior art, there is certain defect:

firstly, the existing clamping tool clamps the lumbar vertebra test model by using a three-hole positioning method, the clamping angle is fixed, and a doctor can only adapt to the angle, so that the lumbar vertebra test model is difficult to place;

secondly, the existing lumbar vertebra trial model has a plurality of specifications, and needs to be replaced for a plurality of times in the operation to determine the proper specification, so that the operation time is increased, the pain of a patient is increased in the replacement process, and the use is inconvenient;

the invention discloses a lumbar vertebra centrum test tool system which is used for solving the problems.

Disclosure of Invention

The invention aims to provide a lumbar vertebra model trial tool system to solve the problems in the background technology.

In order to solve the technical problems, the invention provides the following technical scheme: the lumbar vertebra centrum test mould tool system comprises a test mould body, clamping pincers and a universal screwdriver, wherein the outline shape of the test mould body is consistent with that of a lumbar prosthesis, the clamping pincers are used for clamping the test mould body at a position to be measured in a lumbar prosthesis replacement operation to select the lumbar prosthesis with a proper specification, the clamping pincers are different from the traditional clamping of a fixed hole, the clamping position of the clamping pincers can be conveniently clamped along with a doctor, the operation of the doctor in the operation is facilitated, the universal screwdriver acts on the test mould body after the test mould body is placed at the operation position, the height of the test mould body can be adjusted, the height of the prosthesis required by the operation is further determined, the test mould body comprises a test mould body and an adjusting plate, a through hole is formed in the test mould body, one end of the adjusting plate is provided with a lifting column, the lifting column and the adjusting plate are integrally formed, the lifting column extends into the through hole, the utility model discloses a mould, including rising post, uncovered, be provided with in the rising post and stretch high structure and from locking structure, stretch the height that the adjustable rising post of the universal screwdriver of high structure cooperation, and then adjust the height of examination mould body, the in-process examination mould body of height-adjusting need not to take off from the operation position, need not to change the examination mould body of different specifications many times and can find suitable false body specification, has saved the operation step, self-locking structure can lock the position that rises the post at any time stretching the in-process of height-adjusting of structure, can not lead to rising the post to fall back because of the pressure of lumbar vertebrae, in case the high certainty of examination mould body simultaneously, and locking function can be cancelled to self-locking structure, lets rise the post and fall back naturally, makes things convenient for the examination mould body to take off from the operation position.

Preferably, the structure of stretching up includes rack face, gear post, interior hexagonal cap, be provided with the rack face on the inside wall of lift post, rack face one side is provided with the gear post, gear post and the meshing of rack face, the gear post both ends all are provided with interior hexagonal cap, gear post both ends and interior hexagonal cap fixed connection, interior hexagonal cap is located the lateral wall of examination die body, interior hexagonal cap is rotatable for examination die body, when rotating interior hexagonal cap, can drive the gear post and rotate, under the effect of gear post and rack face, can drive the motion of taking place to keep away from each other between lift post and the examination die body, and then keep away from between regulating plate and the examination die body, the height of examination die body is adjusted promptly.

Preferably, the self-locking structure comprises a transmission rod, a blocking tooth, a torsion spring and a torsion bar, wherein the transmission rod is arranged on one side of a rack face, the transmission rod is sleeved with the blocking tooth, the blocking tooth is fixedly connected with the transmission rod, the blocking tooth is meshed with the rack face, the blocking tooth can block the movement of the rack face in one direction but not block the movement of the rack face in the opposite direction, the torsion spring is arranged in the middle of the blocking tooth, the torsion spring is sleeved on the transmission rod, one end of the torsion spring abuts against the blocking tooth, the other end of the torsion spring abuts against the inner wall of the lifting column, the torsion spring gives a pressing force to the blocking tooth to assist the blocking tooth in locking the rack face, the transmission rod penetrates through the opening and penetrates out of the test mold body, the torsion bars are arranged at two ends of the transmission rod outside the test mold body, the torsion bar and the transmission rod are fixedly connected, when the locking force of the self-locking structure needs to be released, the torsion bar is manually twisted to drive the transmission rod to rotate, and then the blocking teeth are driven to rotate, so that the meshing action of the blocking teeth and the rack surface disappears, and the lifting column falls back.

Preferably, two observation holes are formed in the side face of the test model body, scales are arranged at positions corresponding to the lifting columns and the observation holes, and in the lifting process of the lifting columns, different scales are displayed at the observation holes, so that doctors can conveniently judge the specification of the test model body.

Preferably, the through hole extends to the upper end and the lower end of the test mold body, so that the upper end and the lower end of the test mold body are communicated with the outside, the open end extends to one end of the lifting column, one end of the lifting column is communicated with the outside, the test mold body is free of dead angles, and cleaning and disinfection are facilitated.

Preferably, the clamping pliers comprise a main handle, an auxiliary handle, a main clamping jaw, an auxiliary clamping jaw and a locking device, the main handle is fixedly connected with the main clamping jaw, an included angle between the main handle and the main clamping jaw is an obtuse angle, the auxiliary handle is hinged with the auxiliary clamping jaw, the included angle between the auxiliary handle and the auxiliary clamping jaw is an acute angle, the main handle is rotatably connected with the auxiliary handle, the locking device is arranged between the main handle and the auxiliary handle, the included angle is formed between the main handle and the auxiliary handle, the main handle and the auxiliary handle are forced when being held by hands, the main handle and the auxiliary handle are driven to clamp the test mould body, the main clamping jaw and the auxiliary clamping jaw are parallel, when the test mould body is required to be held by the clamping pliers, the main handle and the auxiliary handle are held by hands, the main handle and the auxiliary handle are forced, the included angle between the main handle and the auxiliary handle is reduced, and the main handle and the main clamping jaw are fixed, the auxiliary handle and the auxiliary clamping jaw are hinged, so that the auxiliary handle drives the auxiliary clamping jaw to move horizontally along the main clamping jaw, the distance between the tips of the main clamping jaw and the auxiliary clamping jaw is reduced, and the force for clamping the test die body is generated.

Preferably, the locking device comprises a first elastic arm, a second elastic arm, a fixed pile, a rack and a tooth protrusion, wherein the first elastic arm is arranged on one side of the main handle close to the auxiliary handle, the second elastic arm is arranged on one side of the auxiliary handle close to the main handle, the middle part of the first elastic arm is fixedly connected with the main handle, the middle part of the second elastic arm is fixedly connected with the auxiliary handle, one end of the first elastic arm is fixedly connected with one end of the second elastic arm, the first elastic arm and the second elastic arm give a force for mutually keeping away from the main handle and the auxiliary handle, the other end of the first elastic arm is provided with the fixed pile, one end of the fixed pile is fixed on the main handle, the other end of the fixed pile is provided with the rack, the fixed pile is hinged with the rack, one end of the first elastic arm close to the fixed pile supports against the rack, the tooth protrusion is arranged at the position corresponding to the auxiliary handle and the rack, and the tooth protrusion is meshed with the tooth on the rack, after the test mold body is clamped, the tooth protrusions are meshed with the teeth on the rack, the clamping force is locked, and meanwhile, the elastic force of the first elastic arm and the elastic force of the second elastic arm are matched with the locking force, so that the clamping of the clamping pliers is very stable.

Preferably, the one end that the assistance clamping jaw is close to main clamping jaw is provided with two spouts, the one end that main clamping jaw is close to the assistance clamping jaw is provided with the slider, it is protruding to be provided with the fender on the spout, be provided with the anticreep backstop on the slider, keep off protruding and anticreep backstop and be used for preventing that the slider from dropping from the spout, when the assistance clamping jaw is translational motion for main clamping jaw, the slider slides in the spout, and the guide is assisted the clamping jaw and can only be removed along the direction parallel with main clamping jaw.

Preferably, the one end that the main handle was kept away from to the main clamping jaw is crooked, the one end that the auxiliary handle was kept away from to the auxiliary clamping jaw is crooked, the crooked direction of main clamping jaw and auxiliary clamping jaw is the same, crooked main clamping jaw and auxiliary clamping jaw make the direction of centre gripping examination mould body unanimous with the direction that the staff controlled main handle and auxiliary handle, accord with the use habit of staff, the crooked position of main clamping jaw and auxiliary clamping jaw is provided with tooth and No. two teeth respectively, tooth and No. two teeth set up in opposite directions, tooth and No. two teeth are used for further pressing from both sides tight examination mould body.

Preferably, universal screwdriver includes hexagonal, universal joint, handle, universal joint one end and hexagonal fixed connection, the universal joint other end and handle fixed connection, the lateral wall of examination die body is worn out to interior hexagonal cap, it is the open-ended that interior hexagonal cap is located the outside one end of examination die body, in the hexagonal can stretch into interior hexagonal cap, when the high needs of examination die body are adjusted, the staff is difficult to adjust in narrow and small operation space, uses universal screwdriver can accomplish this regulation, makes things convenient for the doctor to use, and the universal joint makes the hexagonal can be along with the angle self-adaptation of interior hexagonal cap for the altitude mixture control of examination die body is convenient, feasible.

Compared with the prior art, the invention has the following beneficial effects:

1. the height of the lifting column can be adjusted by the aid of the extending structure matched with the universal screwdriver, so that the height of the test die body can be adjusted, the test die body does not need to be taken down from an operation position in the height adjusting process, the test die body with different specifications does not need to be replaced for multiple times, and the proper specification of the prosthesis can be found, so that operation steps are saved;

2. the self-locking structure can lock the position of the lifting column at any time in the process of adjusting the height of the extending structure, the lifting column cannot fall back due to the pressure of lumbar vertebrae, and once the height of the test mold body is determined, the self-locking structure can cancel the locking function, so that the lifting column falls back naturally, and the test mold body can be conveniently taken down from an operation position;

3. the clamping pincers can clamp the test mould body at a position to be measured, are different from the traditional three-hole positioning clamping, can clamp the test mould body in the clamping direction along with the convenience of a doctor, are convenient for the doctor to operate in an operation, and are provided with the locking devices, so that the clamping position can be locked after the clamping is finished, and the test mould body is prevented from loosening or falling off in the clamping process;

4. according to the invention, when the height of the test mould body needs to be adjusted, a human hand is difficult to adjust in a narrow operation space, the adjustment can be completed by using the universal screwdriver in cooperation with the inner hexagonal cap in the extending structure, so that the use by a doctor is facilitated, and the hexagonal shape can be self-adapted along with the angle of the inner hexagonal cap by using the universal joint, so that the height adjustment of the test mould body is convenient and feasible.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

figure 1 is a perspective view of the lumbar vertebral trial tool system of the present invention;

FIG. 2 is a perspective view of the trial body of the present invention;

FIG. 3 is a perspective view of a test mold body of the present invention;

FIG. 4 is a perspective view of an adjustment plate of the present invention;

FIG. 5 is a perspective view of the elevated structure of the present invention;

FIG. 6 is a perspective view of the self-locking mechanism of the present invention;

FIG. 7 is a perspective view of a holding clamp of the present invention;

FIG. 8 is an exploded view of the present invention gripping tongs;

FIG. 9 is a perspective view of the universal driver of the present invention.

In the figure: 1. testing the mould body; 2. a holding clamp; 3. a universal screwdriver; 4. testing a mold body; 5. an adjusting plate; 6. a through hole; 7. raising the column; 8. opening the mouth; 9. a raised structure; 10. a self-locking structure; 11. a rack surface; 12. a gear post; 13. an inner hexagonal cap; 14. a transmission rod; 15. blocking teeth; 16. a torsion spring; 17. a torsion bar; 18. an observation hole; 19. calibration; 20. a handle; 21. an auxiliary handle; 22. a main jaw; 23. auxiliary clamping jaws; 24. a locking device; 25. a first bullet arm; 26. a second elastic arm; 27. fixing the pile; 28. a rack; 29. the teeth are convex; 30. a chute; 31. a slider; 32. blocking protrusions; 33. an anti-drop stop; 34. a first tooth; 35. a second tooth; 36. hexagonal shape; 37. a universal joint; 38. a handle.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment is as follows: the invention provides a technical scheme, as shown in figures 1-4, a lumbar vertebra centrum test tool system comprises a test die body 1, a clamp 2 and a universal screwdriver 3, wherein the outline shape of the test die body 1 is consistent with that of a lumbar prosthesis, the clamp is used for measuring the lumbar clearance in the replacement operation of the lumbar prosthesis so as to select the lumbar prosthesis with proper specification, the clamp 2 is used for clamping the test die body 1 at the position to be measured, the clamp is different from the traditional clamp of a fixed hole, the clamping position can be conveniently clamped by a doctor, the operation of the doctor in the operation is convenient, after the test die body 1 is placed at the operation position, the universal screwdriver 3 acts on the test die body 1, the height of the test die body 1 can be adjusted, and the height of the prosthesis required by the operation is further determined, the test die body 1 comprises a test die body 4 and an adjusting plate 5, a through hole 6 is arranged in the test die body 4, one end of the adjusting plate 5 is provided with a lifting column 7, the elevating column 7 and the adjusting plate 5 are integrally formed, the elevating column 7 extends into the through hole 6, an opening 8 is arranged in the elevating column 7, an extending structure 9 and a self-locking structure 10 are arranged in the opening 8, the extending structure 9 is matched with the universal screwdriver 3 to adjust the height of the elevating column 7 and further adjust the height of the test mould body 1, in the process of adjusting the height, the test die body 1 does not need to be taken down from the operation position, the test die body 1 with different specifications does not need to be replaced for a plurality of times, the specification of the proper prosthesis can be found, the operation steps are saved, the self-locking structure 10 can be used for adjusting the height in the process of extending the height structure 9, the position of the lifting column 7 can be locked at any time, the lifting column 7 can not fall back due to the pressure of the lumbar, meanwhile, once the height of the test mold body 1 is determined, the self-locking structure 10 can cancel the locking function, so that the lifting column 7 falls back naturally, and the test mold body 1 can be conveniently taken down from the operation position.

As shown in fig. 4 to 5, the elevating structure 9 includes a rack face 11, a gear post 12, an inner hexagonal cap 13, a rack face 11 is provided on the inner wall of the elevating post 7, a gear post 12 is provided on one side of the rack face 11, the gear post 12 is engaged with the rack face 11, inner hexagonal caps 13 are provided at both ends of the gear post 12, both ends of the gear post 12 are fixedly connected with the inner hexagonal caps 13, the inner hexagonal cap 13 is located on the side wall of the test mold body 4, the inner hexagonal cap 13 is rotatable relative to the test mold body 4, when the inner hexagonal cap 13 is rotated, the gear post 12 can be driven to rotate, under the action of the gear post 12 and the rack face 11, the elevating post 7 and the test mold body 4 can be driven to move away from each other, so as to keep away from the adjusting plate 5 and the test mold body 4, that is the height of the test mold body 1 is adjusted.

Referring to fig. 4 and 6, the self-locking structure 10 includes a transmission rod 14, a blocking tooth 15, a torsion spring 16, and a torsion bar 17, the transmission rod 14 is disposed on one side of a rack face 11, the transmission rod 14 is sleeved with the blocking tooth 15, the blocking tooth 15 is fixedly connected with the transmission rod 14, the blocking tooth 15 is engaged with the rack face 11, the blocking tooth 15 can block the movement of the rack face 11 in one direction, but does not block the movement of the rack face 11 in the opposite direction, the torsion spring 16 is disposed in the middle of the blocking tooth 15, the torsion spring 16 is sleeved on the transmission rod 14, one end of the torsion spring 16 abuts against the blocking tooth 15, the other end of the torsion spring abuts against the inner wall of the raising column 7, the torsion spring 16 provides a pressing force to the blocking tooth 15, the rack face 11 is locked by the auxiliary blocking tooth 15, the transmission rod 14 penetrates through the opening 8 and penetrates out of the test mold body 4, the torsion bar 17 is disposed at both ends of the transmission rod 14 outside the test mold body 4, the torsion bar 17 is fixedly connected with the torsion bar 14, and when the locking force of the self-locking structure 10 needs to be released, the torsion bar 17 is manually twisted to drive the transmission rod 14 to rotate, and further drive the blocking teeth 15 to rotate, so that the meshing action of the blocking teeth 15 and the rack face 11 disappears, and the lifting column 7 falls back.

As shown in fig. 3-4, two observation holes 18 are formed in the side surface of the test mold body 4, scales 19 are arranged at positions corresponding to the lifting columns 7 and the observation holes 18, and in the lifting process of the lifting columns 7, different scales 19 are displayed at the observation holes 18, so that a doctor can conveniently judge the specification of the test mold body 1.

As shown in fig. 3-4, the through holes 6 extend to the upper end and the lower end of the test mold body 4, so that the upper end and the lower end of the test mold body 4 are communicated with the outside, one end of the opening 8 extends to one end of the lifting column 7, one end of the lifting column 7 is communicated with the outside, the test mold body 1 is free of dead angles, and cleaning and disinfection are facilitated.

As shown in fig. 7, the holding clamp 2 comprises a main handle 20, an auxiliary handle 21, a main jaw 22, an auxiliary jaw 23 and a locking device 24, the main handle 20 is fixedly connected with the main jaw 22, an included angle between the main handle 20 and the main jaw 22 is an obtuse angle, the auxiliary handle 21 is hinged with the auxiliary jaw 23, an included angle between the auxiliary handle 21 and the auxiliary jaw 23 is an acute angle, the main handle 20 is rotatably connected with the auxiliary handle 21, the locking device 24 is arranged between the main handle 20 and the auxiliary handle 21, an included angle is formed between the main handle 20 and the auxiliary handle 21, the main handle 20 and the auxiliary handle 21 are forced when being held by a human hand, so that the main jaw 22 and the auxiliary jaw 23 are driven to clamp the test mold body 1, the main jaw 22 is parallel to the auxiliary jaw 23, when the test mold body 1 needs to be held by the holding clamp 2, the main handle 20 and the auxiliary handle 21 are held by the human hand, the included angle between the main handle 20 and the auxiliary handle 21 is reduced, the main handle 20 and the main clamping jaw 22 are fixed, the auxiliary handle 21 and the auxiliary clamping jaw 23 are hinged, so that the auxiliary handle 21 drives the auxiliary clamping jaw 23 to translate along the main clamping jaw 22, the distance between the tips of the main clamping jaw 22 and the tips of the auxiliary clamping jaw 23 is reduced, and the force for clamping the test die body 1 is generated.

As shown in fig. 8, the locking device 24 comprises a first elastic arm 25, a second elastic arm 26, a fixing pile 27, a rack 28 and a tooth projection 29, wherein the first elastic arm 25 is arranged on one side of the main handle 20 close to the auxiliary handle 21, the second elastic arm 26 is arranged on one side of the auxiliary handle 21 close to the main handle 20, the middle part of the first elastic arm 25 is fixedly connected with the main handle 20, the middle part of the second elastic arm 26 is fixedly connected with the auxiliary handle 21, one end of the first elastic arm 25 is fixedly connected with one end of the second elastic arm 26, the first elastic arm 25 and the second elastic arm 26 give a force to the main handle 20 and the auxiliary handle 21 to separate from each other, the other end of the first elastic arm 25 is provided with the fixing pile 27, one end of the fixing pile 27 is fixed on the main handle 20, the other end of the fixing pile 28 is provided with the rack 28, the fixing pile 27 is hinged with the rack 28, one end of the first elastic arm 25 close to the rack 28 is pressed against the rack 28, the tooth projection 29 is arranged at a position corresponding to the auxiliary handle 21 and the rack 28, teeth on the rack are meshed with the tooth projection 29, after the test die body 1 is clamped, the tooth protrusions 29 are meshed with teeth on the rack 28, the clamping force is locked, and meanwhile, the elastic force of the first elastic arm 25 and the second elastic arm 26 is matched with the locking force, so that the clamping of the clamping pliers 2 is very stable.

As shown in fig. 8, two sliding grooves 30 are provided at one end of the auxiliary clamping jaw 23 close to the main clamping jaw 22, a sliding block 31 is provided at one end of the main clamping jaw 22 close to the auxiliary clamping jaw 23, a blocking protrusion 32 is provided on the sliding groove 30, an anti-falling stopper 33 is provided on the sliding block 31, the blocking protrusion 32 and the anti-falling stopper 33 are used for preventing the sliding block 31 from falling off from the sliding groove 30, and when the auxiliary clamping jaw 23 makes a translational motion relative to the main clamping jaw 22, the sliding block 31 slides in the sliding groove 30 to guide the auxiliary clamping jaw 23 to move only in a direction parallel to the main clamping jaw 22.

As shown in fig. 8, one end of the main clamping jaw 22, which is far away from the main handle 20, is bent, one end of the auxiliary clamping jaw 23, which is far away from the auxiliary handle 21, is bent, the bending directions of the main clamping jaw 22 and the auxiliary clamping jaw 23 are the same, the bent main clamping jaw 22 and the bent auxiliary clamping jaw 23 enable the direction of clamping the test mold body 1 to be consistent with the direction of a human hand holding the main handle 20 and the auxiliary handle 21, and the bent parts of the main clamping jaw 22 and the auxiliary clamping jaw 23 are respectively provided with a first tooth 34 and a second tooth 35, the first tooth 34 and the second tooth 35 are oppositely arranged, and the first tooth 34 and the second tooth 35 are used for further clamping the test mold body 1.

As shown in fig. 1, 5, 9, universal screwdriver 3 includes hexagonal 36, universal joint 37, handle 38, universal joint 37 one end and hexagonal 36 fixed connection, the universal joint 37 other end and handle 38 fixed connection, universal joint 37 has certain rotary damping, and the lateral wall of examination die body 4 is worn out to interior hexagonal cap 13, and the one end that interior hexagonal cap 13 is located examination die body 4 outside is open-ended, and hexagonal 36 can stretch into interior hexagonal cap 13, and when the high needs of examination die body 1 were adjusted, the staff was difficult to adjust in narrow and small operation space, used universal screwdriver 3 can accomplish this regulation, made things convenient for the doctor to use, and universal joint 37 makes hexagonal 36 can be along with interior hexagonal cap 13's angle self-adaptation for the altitude mixture control of examination die body 1 is convenient, feasible.

The working principle of the invention is as follows: when the device is used, firstly, the clamping pincers 2 are used for clamping the test mould body 1, the test mould body 1 is placed at a position to be measured of the lumbar vertebra, then the universal screwdriver 3 is used for matching with the extending structure 9 in the test mould body 1 to adjust the height of the test mould body 1, a doctor determines the height of the prosthesis required by an operation through the scales 19 displayed at the observation hole 18, after the height of the test mould body 1 is determined, the locking function of the self-locking structure 10 is cancelled, the height of the test mould body 1 is restored, and the test mould body 1 is taken down from the operation position;

the clamping principle of the clamping pincers 2 is as follows: when the test die body 1 needs to be clamped by the clamping tongs 2, the main handle 20 and the auxiliary handle 21 are held by hands, force is applied to the main handle 20 and the auxiliary handle 21, the included angle between the main handle 20 and the auxiliary handle 21 is reduced, the main handle 20 and the main clamping jaw 22 are fixed, the auxiliary handle 21 and the auxiliary clamping jaw 23 are hinged, the auxiliary handle 21 drives the auxiliary clamping jaw 23 to move, the sliding block 31 is driven to slide in the sliding groove 30, the sliding block 31 and the sliding groove 30 guide the auxiliary clamping jaw 23 to move only along the direction parallel to the main clamping jaw 22, the distance between the tips of the main clamping jaw 22 and the tip of the auxiliary clamping jaw 23 is reduced, force for clamping the test die body 1 is generated, after the test die body 1 is clamped, the tooth protrusions 29 are meshed with the teeth on the rack 28, the clamping force is locked, and meanwhile, the elastic force of the first elastic arm 25 and the second elastic arm 26 is matched with the locking force, so that the clamping tongs 2 are clamped very firmly;

the principle that the universal screwdriver 3 is matched with the extending structure 9 to adjust the height of the test die body 1 is as follows: when the height of the test mold body 1 needs to be adjusted, the handle 38 is held by hand, the hexagon 36 is placed in the inner hexagonal cap 13, the handle 38 is rotated, the hexagon 36 drives the inner hexagonal cap 13 to rotate, the gear column 12 is further driven to rotate, under the action of the gear column 12 and the rack surface 11, the lifting column 7 and the test mold body 4 can be driven to move away from each other, the adjusting plate 5 and the test mold body 4 are further moved away from each other, and therefore the height of the test mold body 1 is adjusted;

the principle of the locking structure 10 is: the torsion spring 16 provides a pressing force for the blocking tooth 15, the blocking tooth 15 is matched with the meshing of the rack face 11, the rack face 11 can only move along one direction, the other direction is locked, when the locking force of the self-locking structure 10 needs to be released, the torsion bar 17 is manually screwed, the transmission rod 14 is driven to rotate, the blocking tooth 15 is driven to rotate, the meshing effect of the blocking tooth 15 and the rack face 11 disappears, the lifting column 7 falls back, and the test mold body 1 is taken down from the operation position.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Lumbar vertebrae centrum examination mould tool system, its characterized in that: the universal screwdriver comprises a test die body (1), clamping pincers (2) and a universal screwdriver (3), wherein the test die body (1) comprises a test die body (4) and an adjusting plate (5), a through hole (6) is formed in the test die body (4), a lifting column (7) is arranged at one end of the adjusting plate (5), the lifting column (7) extends into the through hole (6), an opening (8) is formed in the lifting column (7), and a lifting structure (9) and a self-locking structure (10) are arranged in the opening (8);

the lifting structure (9) comprises a rack surface (11), a gear column (12) and an inner hexagonal cap (13), the rack surface (11) is arranged on the inner wall surface of the lifting column (7), the gear column (12) is arranged on one side of the rack surface (11), the inner hexagonal caps (13) are arranged at two ends of the gear column (12), and the inner hexagonal caps (13) are positioned on the side wall of the mold testing body (4);

the self-locking structure (10) comprises a transmission rod (14), a blocking tooth (15), a torsion spring (16) and a torsion bar (17), wherein the transmission rod (14) is arranged on one side of a rack face (11), the blocking tooth (15) is sleeved on the transmission rod (14), the torsion spring (16) is arranged in the middle of the blocking tooth (15), the torsion spring (16) is sleeved on the transmission rod (14), one end of the torsion spring (16) abuts against the blocking tooth (15), the other end of the torsion spring abuts against the inner wall of the lifting column (7), the transmission rod (14) penetrates through an opening (8) and penetrates out of the test mold body (4), and the torsion bar (17) is arranged at two ends of the transmission rod (14) which are positioned outside the test mold body (4).

2. The lumbar vertebral body trial tool system of claim 1, wherein: two observation holes (18) are formed in the side face of the mold body (4), and scales (19) are arranged at the positions, corresponding to the observation holes (18), of the lifting column (7).

3. The lumbar vertebral trial mold tool system of claim 1, wherein: the through hole (6) extends to the upper end and the lower end of the test mold body (4), so that the upper end and the lower end of the test mold body (4) are communicated with the outside, one end of the opening (8) extends to one end of the lifting column (7), and one end of the lifting column (7) is communicated with the outside.

4. The lumbar vertebral trial mold tool system of claim 1, wherein: centre gripping pincers (2) include main handle (20), assist handle (21), main clamping jaw (22), assist clamping jaw (23), locking device (24), main handle (20) and main clamping jaw (22) fixed connection, assist handle (21) and assist clamping jaw (23) articulated, main handle (20) and assist handle (21) rotate to be connected, be provided with locking device (24) between main handle (20) and the assistance handle (21), it is parallel between main clamping jaw (22) and the assistance clamping jaw (23).

5. The lumbar vertebral trial mold tool system of claim 4, wherein: the locking device (24) comprises a first elastic arm (25), a second elastic arm (26), a fixed pile (27), a rack (28) and a tooth protrusion (29), wherein the first elastic arm (25) is arranged on one side, close to the auxiliary handle (21), of the main handle (20), the second elastic arm (26) is arranged on one side, close to the main handle (20), of the auxiliary handle (21), the middle of the first elastic arm (25) is fixedly connected with the main handle (20), the middle of the second elastic arm (26) is fixedly connected with the auxiliary handle (21), one end of the first elastic arm (25) is fixedly connected with one end of the second elastic arm (26), the fixed pile (27) is arranged at the other end of the first elastic arm (25), one end, close to the fixed pile (27), of the fixed pile (27) is fixed on the main handle (20), the other end of the fixed pile (27) is provided with the rack (28), the fixed pile (27) is hinged with the rack (28), one end of the first elastic arm (25) is abutted to the rack (28), the auxiliary handle (21) and the rack (28) are provided with teeth protrusions (29) at corresponding positions.

6. The lumbar vertebral trial mold tool system of claim 4, wherein: the auxiliary clamping jaw is characterized in that two sliding grooves (30) are formed in one end, close to the main clamping jaw (22), of the auxiliary clamping jaw (23), a sliding block (31) is arranged at one end, close to the auxiliary clamping jaw (23), of the main clamping jaw (22), a blocking protrusion (32) is arranged on the sliding groove (30), and an anti-falling blocking piece (33) is arranged on the sliding block (31).

7. The lumbar vertebral trial mold tool system of claim 4, wherein: the one end that main clamping jaw (22) kept away from main handle (20) is crooked, the one end that assists handle (21) is kept away from in assistance clamping jaw (23) is crooked, the crooked direction of main clamping jaw (22) and assistance clamping jaw (23) is the same, the crooked position of main clamping jaw (22) and assistance clamping jaw (23) is provided with tooth (34) and No. two tooth (35) respectively, tooth (34) and No. two tooth (35) set up in opposite directions.

8. The lumbar vertebral trial mold tool system of claim 1, wherein: universal screwdriver (3) are including hexagonal (36), universal joint (37), handle (38), universal joint (37) one end and hexagonal (36) fixed connection, universal joint (37) other end and handle (38) fixed connection, the lateral wall of examination die body (4) is worn out to interior hexagonal cap (13), the one end that interior hexagonal cap (13) are located examination die body (4) outside is open-ended, hexagonal (36) can stretch into in hexagonal cap (13).