CN118032538A - Scoliosis external test device - Google Patents
Scoliosis external test device Download PDFInfo
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- CN118032538A CN118032538A CN202410424186.7A CN202410424186A CN118032538A CN 118032538 A CN118032538 A CN 118032538A CN 202410424186 A CN202410424186 A CN 202410424186A CN 118032538 A CN118032538 A CN 118032538A
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- 206010039722 scoliosis Diseases 0.000 title claims abstract description 57
- 238000012360 testing method Methods 0.000 title claims abstract description 49
- 238000000338 in vitro Methods 0.000 claims abstract description 26
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 230000000399 orthopedic effect Effects 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 5
- 239000002861 polymer material Substances 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims 1
- 238000005452 bending Methods 0.000 abstract description 8
- 238000011084 recovery Methods 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 210000000748 cardiovascular system Anatomy 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 210000000653 nervous system Anatomy 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004202 respiratory function Effects 0.000 description 1
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Abstract
The application provides an external test device for scoliosis, which comprises: a base; the fixed seat is fixedly arranged on the base, and the movable seat is movably arranged on the base and is spaced from the fixed seat; the vertebral body component comprises a plurality of vertebral body prostheses and at least two elastic pieces, wherein the plurality of vertebral body prostheses are arranged between the fixed seat and the movable seat at intervals, the elastic pieces are all arranged on the plurality of vertebral body prostheses in a penetrating mode, the first ends of the elastic pieces are all arranged on the movable seat, and the second ends of the elastic pieces are all arranged on the fixed seat. According to the technical scheme provided by the application, the problems that in the related art, by arranging the vertebral body prosthesis assembly, the human body is simulated to perform bending movement observation, but the stress limit of the scoliosis of the spine when the spine is stressed cannot be obtained, the mechanical test cannot be performed on the vertebral body in vitro, and the recovery of the scoliosis cannot be evaluated are solved.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to an external test device for scoliosis.
Background
Scoliosis is an abnormal form of the spine, usually manifested as a curvature of the spine and to one side. This condition may occur at any age, but is most commonly found in adolescent stages. Scoliosis affects not only the appearance of a patient, but also its respiratory function, cardiovascular system, lungs and normal functioning of the nervous system. Therefore, the composition has important significance for preventing and treating scoliosis.
In the related art, the vertebral body prosthesis is arranged to correspond to the size of a real human vertebral body, so that the vertebral body prosthesis assembly is flexible and free and has high simulation degree, and further, the movement of the vertebral body can be conveniently observed.
However, by arranging the vertebral body prosthesis assembly in the related art, the human body is simulated to observe the bending movement, but the stress limit of the scoliosis of the spine when the spine is stressed cannot be obtained, the vertebral body cannot be simulated through a mechanical test in vitro, and therefore the recovery of the scoliosis cannot be evaluated.
Disclosure of Invention
The invention provides an external test device for scoliosis, which aims to solve the problems that in the related art, by arranging a vertebral body prosthesis assembly, a human body is simulated to observe bending movement, but the stress limit of scoliosis when the spine is stressed cannot be obtained, and the mechanical test on the vertebral body cannot be simulated in vitro, so that the recovery of the scoliosis cannot be evaluated.
The invention provides an external test device for scoliosis, which comprises: a base; the fixed seat is fixedly arranged on the base, and the movable seat is movably arranged on the base and is spaced from the fixed seat; the vertebral body component comprises a plurality of vertebral body prostheses and at least two elastic pieces, wherein the plurality of vertebral body prostheses are arranged between the fixed seat and the movable seat at intervals, the elastic pieces are all arranged on the plurality of vertebral body prostheses in a penetrating mode, the first ends of the elastic pieces are all arranged on the movable seat, and the second ends of the elastic pieces are all arranged on the fixed seat.
Further, the movable seat and the fixed seat are internally provided with clamping structures for fixing the elastic piece.
Further, the clamping structure comprises a first fastening chuck, a second fastening chuck and a tensioning spring, wherein the first fastening chuck and the second fastening chuck are movably arranged, a first end of the tensioning spring is connected with the first fastening chuck, a second end of the tensioning spring is connected with the second fastening chuck, an elastic piece is located between the first fastening chuck and the second fastening chuck, and the first fastening chuck and the second fastening chuck are in a fastening state for clamping the elastic piece and a separation state for releasing the elastic piece.
Further, still be provided with carousel and cam handle between first fastening chuck and the second fastening chuck, the lateral wall of carousel has the bellying, and the bellying of carousel is supported the top cooperation with first fastening chuck and second fastening chuck respectively, and cam handle is connected with the carousel drive to make carousel pass through bellying drive first fastening chuck and second fastening chuck and switch between fastening state and separation state.
Further, all be provided with the sleeve in removal seat and the fixing base, the sleeve is worn to locate by the elastic component, and the telescopic one side of orientation of first fastening chuck and second fastening chuck all is provided with the arc, and telescopic lateral wall is provided with the through-hole, and the through-hole is worn to locate by the arc and can with the elastic component looks butt.
Further, the moving seat and the fixing seat are respectively provided with a first guide lug and a second guide lug corresponding to the first fastening chuck and the second fastening chuck, the first guide lugs and the second guide lugs extend along the moving direction of the first fastening chuck and the second fastening chuck, the first fastening chuck is provided with a first guide groove, the first guide lugs extend into the first guide groove, the second fastening chuck is provided with a second guide groove, and the second guide lugs extend into the second guide groove.
Further, the cone assembly further comprises a plurality of locking pieces, the plurality of locking pieces and the plurality of cone prostheses are arranged in one-to-one correspondence, and the locking pieces penetrate through the cone prostheses and are abutted against the elastic pieces.
Further, the locking piece comprises a fastening screw, a first threaded hole is formed in the vertebral body prosthesis, the axis of the first threaded hole is perpendicular to the axis of the elastic piece, and the fastening screw penetrates through the first threaded hole and is abutted to the elastic piece.
Further, the top of the vertebral body prosthesis is provided with a first inclined plane and a second inclined plane, an obtuse angle exists between the first inclined plane and the second inclined plane, second threaded holes are formed in the first inclined plane and the second inclined plane, the vertebral body assembly further comprises a vertebral pedicle screw bolt, the vertebral pedicle screw bolt stretches into the second threaded holes, and the top of the vertebral pedicle screw bolt is provided with a matching part connected with an orthopedic tool.
Further, the pedicle screw bolt is made of a high polymer material; and/or the included angle between the first inclined surface and the second inclined surface is set between 120 DEG and 150 deg.
Further, the elastic piece is of a cylindrical structure made of rubber materials; and/or, be provided with on the base and dodge groove and guiding axle, dodge the groove and extend along the length direction of base, remove the seat and movably set up in dodging the inslot, remove the seat and be provided with linear bearing, the guiding axle wears to locate to remove the seat and cooperate with linear bearing.
By applying the technical scheme of the invention, the scoliosis external test device comprises a base, a fixed seat, a movable seat and a vertebral body component, wherein the fixed seat is fixedly arranged on the base, the movable seat is movably arranged on the base, a space is reserved between the fixed seat and the movable seat, the vertebral body component is arranged between the fixed seat and the movable seat, first ends of at least two elastic pieces are arranged on the movable seat, second ends of at least two elastic pieces are arranged on the fixed seat, the elastic pieces penetrate through a plurality of vertebral body prostheses, the plurality of vertebral body prostheses are arranged between the fixed seat and the movable seat at intervals, so that when the movable seat is stressed and moved, the movable seat can be continuously moved under the condition that the first ends and the second ends of the elastic pieces are respectively fixed by the movable seat, the elastic pieces can be elastically deformed, the plurality of vertebral body prostheses of the vertebral body component can be deformed along with the elastic deformation of the elastic pieces, the elastic deformation of the elastic pieces can be simulated under the action of the movable seat, the stress of the vertebral body prostheses can be simulated, and the external test device can be stressed and tested by the external test device of the scoliosis external test device to the scoliosis external test device conveniently.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 shows a schematic structural diagram of an in vitro test device for scoliosis provided according to an embodiment of the present invention;
FIG. 2 shows a schematic structural view of a clamping structure provided according to an embodiment of the present invention;
FIG. 3 shows a schematic view of another view of a clamping structure provided in accordance with an embodiment of the present invention;
FIG. 4 illustrates a schematic view of a structure of a vertebral body prosthesis provided in accordance with an embodiment of the present invention;
FIG. 5 shows a schematic diagram of a scoliosis in vitro test device provided according to an embodiment of the invention;
FIG. 6 illustrates a schematic diagram of the vertebral body assembly stress of a scoliosis in vitro test device provided according to an embodiment of the present invention.
Wherein the above figures include the following reference numerals:
10. A base; 11. an avoidance groove; 12. a guide shaft;
20. a fixing seat;
30. a movable seat; 31. a sleeve; 32. an arc-shaped plate; 33. a linear bearing;
40. a vertebral body assembly; 41. a vertebral body prosthesis; 42. an elastic member; 43. a locking member; 44. pedicle screw bolts;
50. a clamping structure; 51. a first fastening chuck; 52. a second fastening chuck; 53. tensioning the spring; 54. a turntable; 541. a boss; 55. a cam handle.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 6, an embodiment of the present invention provides an in vitro test device for scoliosis, which includes a base 10, a fixed seat 20, a movable seat 30 and a vertebral body assembly 40, wherein the fixed seat 20 is fixedly disposed on the base 10, the movable seat 30 is movably disposed on the base 10 and has a space with the fixed seat 20, the vertebral body assembly 40 includes a plurality of vertebral body prostheses 41 and at least two elastic members 42, the plurality of vertebral body prostheses 41 are disposed between the fixed seat 20 and the movable seat 30 at a space, the elastic members 42 are respectively disposed on the plurality of vertebral body prostheses 41, first ends of the elastic members 42 are respectively disposed on the movable seat 30, and second ends of the elastic members 42 are respectively disposed on the fixed seat 20.
The application of the scoliosis in-vitro test device provided by the embodiment, this scoliosis in-vitro test device includes base 10, fixing base 20, remove seat 30 and centrum subassembly 40, fixing base 20 is fixed to be set up on base 10, remove seat 30 movably and set up on base 10, and have the interval between fixing base 20 and the removal seat 30, set up the centrum subassembly 40 between fixing base 20 and remove seat 30, the first end of at least two elastic components 42 all sets up on removing seat 30, the second end of at least two elastic components 42 all sets up on fixing base 20, wear the elastic components 42 to locate a plurality of centrum prostheses 41, and with a plurality of centrum prostheses 41 interval setting between fixing base 20 and removal seat 30, so can be when removing seat 30 atress removal, under the condition that first end and second end of removing seat 30 and fixing seat 20 respectively fixed elastic components 42, remove seat 30 continue to remove, and make elastic components 40's a plurality of centrum prostheses 41 can carry out elastic deformation along with elastic components 42, and make the elastic components 42 a plurality of prosthesis can carry out the experimental device of the scoliosis under the effect of the prosthetic is carried out the experimental device of the scoliosis in vitro test device of the scoliosis, and the effect of the scoliosis can be further simulated at the scoliosis is carried out at the side of the human body is convenient for the scoliosis in the scoliosis is stressed to the human body is bent.
In this embodiment, the vertebral body assembly 40 includes two elastic members 42, the two elastic members 42 are disposed through the plurality of vertebral body prostheses 41, and further constitute the vertebral body assembly 40, the first end of the elastic member 42 of the vertebral body assembly 40 is connected with the fixed seat 20, the second end of the elastic member 42 of the vertebral body assembly 40 is connected with the movable seat 30, the movable seat 30 moves on the base 10, the movable seat 30 moves towards the direction of the fixed seat 20, and further the elastic member 42 is subjected to bending deformation, the elastic members 42 are disposed through the plurality of vertebral body prostheses 41, and further the plurality of vertebral body prostheses 41 move along with the bending deformation of the elastic members 42, and under the condition of high stress, the elastic members 42 are relatively swinging between the adjacent two vertebral body prostheses 41, so that the scoliosis in vitro test device can simulate the cause of human spine bending through the vertebral body assembly 40, and further can obtain the stress through the loading of the movable seat 30, the scoliosis can also carry out the scoliosis test according to the various causes of the scoliosis of the vertebral body assembly 40, and the scoliosis in vitro test can also be performed to test the scoliosis in vitro function.
As shown in fig. 2 and 3, the movable and fixed seats 30 and 20 are provided therein with a clamping structure 50 for fixing the elastic member 42. By adopting the structure, the clamping structures 50 are arranged in the movable seat 30 and the fixed seat 20, and then the clamping structures 50 can be utilized to clamp and fix the first end and the second end of the elastic piece 42, so that the elastic piece 42 is ensured to be fixed when the movable seat 30 moves relative to the base 10, the elastic piece 42 is prevented from moving relative to the movable seat 30 and the fixed seat 20, and the practicability of the scoliosis in-vitro test device is improved.
As shown in fig. 2 and 3, the clamping structure 50 includes a first clamping chuck 51, a second clamping chuck 52, and a tension spring 53, the first and second clamping chucks 51 and 52 being movably disposed, a first end of the tension spring 53 being connected to the first clamping chuck 51, a second end of the tension spring 53 being connected to the second clamping chuck 52, the elastic member 42 being located between the first and second clamping chucks 51 and 52, the first and second clamping chucks 51 and 52 having a clamped state clamping the elastic member 42 and a separated state releasing the elastic member 42. With the above structure, the first fastening chuck 51 and the second fastening chuck 52 are movably disposed, the first end of the tension spring 53 is connected with the first fastening chuck 51, the second end of the tension spring 53 is connected with the second fastening chuck 52, and the elastic member 42 is inserted between the first fastening chuck 51 and the second fastening chuck 52, and since the tension spring 53 is always in a contracted state, the first fastening chuck 51 and the second fastening chuck 52 can be tensioned under the action of the tension spring 53, and the elastic member 42 is disposed between the first fastening chuck 51 and the second fastening chuck 52, so that the elastic member 42 is conveniently clamped. Under the action of the tensioning spring 53, the first fastening chuck 51 and the second fastening chuck 52 are in a fastening state for clamping the elastic piece 42 and a separating state for releasing the elastic piece 42, when the elastic piece 42 needs to be clamped, the tensioning spring 53 is stretched first, so that the first fastening chuck 51 and the second fastening chuck 52 are far away from each other and are in the separating state, the elastic piece 42 can be stretched in or detached, after the elastic piece 42 stretches in, the tensioning spring 53 contracts and tightens, so that the first fastening chuck 51 and the second fastening chuck 52 are close to each other and are abutted against the elastic piece 42 and are in the fastening state, and further clamping and fixing of the elastic piece 42 are guaranteed.
As shown in fig. 2 and 3, a turntable 54 and a cam handle 55 are further disposed between the first fastening chuck 51 and the second fastening chuck 52, the outer side wall of the turntable 54 has a protrusion 541, the protrusion 541 of the turntable 54 is in abutting fit with the first fastening chuck 51 and the second fastening chuck 52, respectively, and the cam handle 55 is in driving connection with the turntable 54 so that the turntable 54 drives the first fastening chuck 51 and the second fastening chuck 52 to switch between a fastened state and a separated state through the protrusion 541. With the above structure, by providing the turntable 54 and the cam handle 55 between the first fastening chuck 51 and the second fastening chuck 52, the turntable 54 is driven to rotate by controlling the cam handle 55, the turntable 54 drives the boss 541 to rotate, so that the turntable 54 has a separated state of separating the first fastening chuck 51 and the second fastening chuck 52 under the action of the boss 541, and then the turntable 54 continues to rotate, so that the first fastening chuck 51 and the second fastening chuck 52 are in a fastening state of being close to each other under the action of the tensioning spring 53, and the cam handle 55 is conveniently controlled to clamp or disassemble the elastic member 42.
As shown in fig. 2, the rotating disc 54 is provided with the protruding portions 541, when the rotating disc 54 rotates, the protruding portions 541 are matched with the first fastening chuck 51 and the second fastening chuck 52, that is, two protruding portions 541 are symmetrically provided on the rotating disc 54, when the first fastening chuck 51 and the second fastening chuck 52 need to be separated, the rotating disc 54 rotates so that one protruding portion 541 abuts against the first fastening chuck 51, the other protruding portion 541 abuts against the second fastening chuck 52, and the first fastening chuck 51 and the second fastening chuck 52 can be further separated from each other against the tension of the tension spring 53, so that the elastic member 42 is conveniently arranged between the first fastening chuck 51 and the second fastening chuck 52. When the first fastening chuck 51 and the second fastening chuck 52 need to be close to each other, the turntable 54 is continuously rotated so that the two protruding portions 541 are far away from the first fastening chuck 51 and the second fastening chuck 52, and thus the first fastening chuck 51 and the second fastening chuck 52 can be close to each other under the action of the tension force of the tension spring 53, and further the elastic member 42 can be clamped and fixed.
As shown in fig. 2 and 3, the movable seat 30 and the fixed seat 20 are both provided with a sleeve 31, the elastic member 42 is inserted into the sleeve 31, one sides of the first fastening chuck 51 and the second fastening chuck 52, which face the sleeve 31, are both provided with an arc plate 32, the side wall of the sleeve 31 is provided with a through hole, and the arc plate 32 is inserted into the through hole and can be abutted against the elastic member 42. By adopting the above structure, the elastic piece 42 is conveniently positioned by arranging the sleeve 31, and in order to ensure the clamping of the elastic piece 42, the side wall of the sleeve 31 is provided with the through hole, one side of the first fastening chuck 51 and the second fastening chuck 52, which faces the sleeve 31, is provided with the arc plate 32, when the first fastening chuck 51 and the second fastening chuck 52 are close to each other, the arc plate 32 can extend into the through hole, and then the arc plate 32 is abutted with the elastic piece 42, and the positioning and clamping functions can be realized by utilizing the through hole.
In this embodiment, the moving seat 30 and the fixed seat 20 are respectively provided with a first guiding bump and a second guiding bump corresponding to the first fastening chuck 51 and the second fastening chuck 52, the first guiding bump and the second guiding bump extend along the moving direction of the first fastening chuck 51 and the second fastening chuck 52, the first fastening chuck 51 is provided with a first guiding groove, the first guiding bump extends into the first guiding groove, the second fastening chuck 52 is provided with a second guiding groove, and the second guiding bump extends into the second guiding groove. With the above structure, the first guide projection is inserted into the first guide groove, and the second guide projection is inserted into the second guide groove, so that the first and second chucks 51 and 52 can be easily slid.
As shown in fig. 1, the vertebral body assembly 40 further includes a plurality of locking members 43, where the plurality of locking members 43 and the plurality of vertebral body prostheses 41 are disposed in a one-to-one correspondence, and the locking members 43 penetrate through the vertebral body prostheses 41 and abut against the elastic members 42. By adopting the structure, the locking piece 43 is arranged on each vertebral body prosthesis 41, so that the locking piece 43 penetrates through the vertebral body prosthesis 41 and abuts against the elastic piece 42, and the vertebral body prosthesis 41 is prevented from moving relatively on the elastic piece 42.
As shown in fig. 4, the locking member 43 includes a fastening screw, and the vertebral body prosthesis 41 is provided with a first threaded hole, the axis of which is perpendicular to the axis of the elastic member 42, and the fastening screw is disposed through the first threaded hole and abuts against the elastic member 42. With the above structure, the fastening screw is conveniently inserted into the first threaded hole and abutted against the elastic member 42.
In the present application, after the curved washer is placed in the first threaded hole, the fastening screw is screwed into the first threaded hole and abuts against the elastic member 42, so that the vertebral prosthesis 41 can be conveniently fixed on the elastic member 42, and the problem that the elastic member 42 is damaged due to stress can be avoided.
As shown in fig. 1 and 4, the top of the vertebral body prosthesis 41 has a first inclined plane and a second inclined plane, an obtuse angle exists between the first inclined plane and the second inclined plane, second threaded holes are formed in the first inclined plane and the second inclined plane, the vertebral body assembly 40 further comprises a pedicle screw 44, the pedicle screw 44 extends into the second threaded hole, and the top of the pedicle screw 44 has a matching portion connected with an orthopedic tool. By adopting the structure, the first inclined plane and the second inclined plane are arranged to be obtuse angles, so that the angle of the human spine can be conveniently simulated, the pedicle screw bolt 44 can be conveniently stretched into the second threaded hole, and the matching part of the pedicle screw bolt 44 can be conveniently connected with an orthopedic tool.
It should be noted that, the vertebral body prosthesis 41 is made of light metal or nonmetal (such as aluminum alloy and POM) materials to simulate the general shape of a human body vertebral body.
In this embodiment, the pedicle screw 44 is made of a polymer material. The pedicle screw bolts 44 are made of high polymer materials, so that human bone can be better simulated, and the structural reliability of the pedicle screw bolts 44 is ensured.
In this embodiment, the pedicle screw 44 is a pedicle bone simulating block made of polyurethane, a bottom hole is formed in the center of the pedicle screw 44 for driving a pedicle screw, blind holes around the pedicle screw 44 are used for being combined with a tool to facilitate rotation, and the pedicle screw 44 is further facilitated to be screwed into a second threaded hole, so that the pedicle screw 44 is more convenient to be used for an orthopedic test by using an orthopedic tool later.
In this embodiment, the angle between the first inclined surface and the second inclined surface is set between 120 ° and 150 °. By setting the angle between the first inclined plane and the second inclined plane within the above range, the human spine can be better simulated, and the pedicle screw 44 can be conveniently inserted into the vertebral prosthesis 41.
It should be noted that the included angle between the first inclined surface and the second inclined surface may be set to any other value between 120 °, 130 °, 140 °, 150 °, and 120 ° to 150 °.
In this embodiment, the elastic member 42 is a cylindrical structure made of rubber. By adopting the structure, the elastic piece 42 is made of rubber materials, the vertebral body prosthesis 41 can be better connected, further the simulation is better performed, in a scoliosis test, the elastic piece 42 can be stressed and compressed along with the movement of the movable seat 30, and a plurality of vertebral body prostheses 41 are driven to move when the elastic piece 42 is deformed.
It should be noted that, the elastic member 42 is made of rubber materials, so that the elastic member 42 can simulate the elastic structure of the whole spine segment, and further better simulate the reason that the scoliosis occurs when the spine of the human body is stressed.
As shown in fig. 1, a base 10 is provided with an avoidance groove 11 and a guide shaft 12, the avoidance groove 11 extends along the length direction of the base 10, a movable seat 30 is movably arranged in the avoidance groove 11, a linear bearing 33 is arranged on the movable seat 30, and the guide shaft 12 is arranged on the movable seat 30 in a penetrating manner and is matched with the linear bearing 33. Through setting up dodge the groove 11 and can play the effect of dodging to remove seat 30, guide shaft 12 wears to locate and remove seat 30 to be provided with linear bearing 33 on removing seat 30, linear bearing 33 carries out sliding fit with guide shaft 12, is convenient for remove seat 30 and removes.
It should be noted that, a constant load (which may be added by a mechanical testing machine or a mass load may be applied by a pulley block) is applied to one end of the movable seat 30, so as to implement a compressive displacement of the movable seat 30, and after a scoliosis is simulated, the orthopedic tool may be mounted on a test platform, so as to continuously test the orthopedic performance of the orthopedic tool.
Under the compression load or displacement action of the movable seat 30, each vertebral body prosthesis 41 is gradually compressed, and the inner side and the outer side are unequal after the elastic piece 42 is bent, so that the vertebral body prosthesis 41 is not only unstably bent to one side in the middle area, but also rotates in a certain plane, namely, two adjacent vertebral body prostheses 41 can swing relatively, the lateral bending deformation and evolution form of the human spine can be effectively simulated, and the practicability and the structural reliability of the lateral bending external test device of the spine are improved.
Specifically, on the scoliosis external test device of the present embodiment, the orthopedic performance of the orthopedic tool in the case of simulating the lateral curvature of the spine can be realized, the curved vertebral body component 40 is gradually straightened through the orthopedic operation of a doctor or an engineer, the load can be maintained unchanged or the load is changed through the test machine in the straightening process, and finally the external test performance of the scoliosis orthopedic product is obtained. The pedicle screw 44 simulating the pedicle may be replaced in a scoliosis in vitro test device. Likewise, the elastic member 42 may be made of materials with different elasticity according to experimental needs (e.g., simulating patients of different ages). Finally, the standardized in-vitro test device for scoliosis correction is realized.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. The utility model provides a scoliosis external test device which characterized in that, the external test device of scoliosis includes:
A base (10);
The fixed seat (20) is fixedly arranged on the base (10), and the movable seat (30) is movably arranged on the base (10) and is spaced from the fixed seat (20);
The vertebral body assembly (40) comprises a plurality of vertebral body prostheses (41) and at least two elastic pieces (42), wherein the vertebral body prostheses (41) are arranged between the fixed seat (20) and the movable seat (30) at intervals, the elastic pieces (42) are arranged on the vertebral body prostheses (41) in a penetrating mode, first ends of the elastic pieces (42) are arranged on the movable seat (30), and second ends of the elastic pieces (42) are arranged on the fixed seat (20).
2. The scoliosis in vitro test device according to claim 1, wherein clamping structures (50) are arranged in the movable seat (30) and the fixed seat (20) for fixing the elastic element (42).
3. The scoliosis in vitro test device according to claim 2, wherein the clamping structure (50) comprises a first fastening chuck (51), a second fastening chuck (52) and a tightening spring (53), the first fastening chuck (51) and the second fastening chuck (52) being movably arranged, a first end of the tightening spring (53) being connected to the first fastening chuck (51), a second end of the tightening spring (53) being connected to the second fastening chuck (52), the elastic member (42) being located between the first fastening chuck (51) and the second fastening chuck (52), the first fastening chuck (51) and the second fastening chuck (52) having a fastened state clamping the elastic member (42) and a detached state releasing the elastic member (42).
4. A scoliosis in vitro test device according to claim 3, characterized in that a turntable (54) and a cam handle (55) are further arranged between the first fastening chuck (51) and the second fastening chuck (52), the outer side wall of the turntable (54) is provided with a protruding portion (541), the protruding portion (541) of the turntable (54) is respectively in abutting fit with the first fastening chuck (51) and the second fastening chuck (52), and the cam handle (55) is in driving connection with the turntable (54) so that the turntable (54) drives the first fastening chuck (51) and the second fastening chuck (52) to switch between a fastening state and a separation state through the protruding portion (541).
5. The scoliosis in-vitro test device according to claim 3, wherein the movable seat (30) and the fixed seat (20) are both internally provided with a sleeve (31), the elastic piece (42) is arranged in the sleeve (31) in a penetrating manner, one sides of the first fastening chuck (51) and the second fastening chuck (52) which face the sleeve (31) are both provided with an arc plate (32), the side wall of the sleeve (31) is provided with a through hole, and the arc plate (32) is arranged in the through hole in a penetrating manner and can be abutted with the elastic piece (42).
6. The scoliosis in-vitro test device according to claim 3, wherein the moving seat (30) and the fixed seat (20) are respectively provided with a first guide projection and a second guide projection corresponding to the first fastening chuck (51) and the second fastening chuck (52), the first guide projection and the second guide projection extend along the moving direction of the first fastening chuck (51) and the second fastening chuck (52), the first fastening chuck (51) is provided with a first guide groove, the first guide projection extends into the first guide groove, the second fastening chuck (52) is provided with a second guide groove, and the second guide projection extends into the second guide groove.
7. The scoliosis in vitro test device according to any one of claims 1 to 6, wherein the vertebral body assembly (40) further comprises a plurality of locking members (43), a plurality of locking members (43) and a plurality of vertebral body prostheses (41) are arranged in a one-to-one correspondence, and the locking members (43) penetrate through the vertebral body prostheses (41) and abut against the elastic members (42).
8. The scoliosis in-vitro test device according to claim 7, wherein the locking member (43) comprises a fastening screw, a first threaded hole is formed in the vertebral body prosthesis (41), the axis of the first threaded hole is perpendicular to the axis of the elastic member (42), and the fastening screw penetrates through the first threaded hole and abuts against the elastic member (42).
9. The scoliosis in vitro test device according to any one of claims 1 to 6, wherein the top of the vertebral body prosthesis (41) has a first slope and a second slope, an obtuse angle exists between the first slope and the second slope, a second threaded hole is provided on each of the first slope and the second slope, the vertebral body assembly (40) further comprises a pedicle screw (44), the pedicle screw (44) extends into the second threaded hole, and the top of the pedicle screw (44) has a mating portion connected with an orthopedic tool.
10. The scoliosis in vitro test device according to claim 9, wherein,
The pedicle screw bolt (44) is made of a high polymer material; and/or the number of the groups of groups,
An included angle between the first inclined surface and the second inclined surface is set between 120 degrees and 150 degrees.
11. The scoliosis in vitro test device according to any one of the claims 1 to 6, wherein,
The elastic piece (42) is of a cylindrical structure made of rubber materials; and/or the number of the groups of groups,
The novel anti-collision device is characterized in that an avoidance groove (11) and a guide shaft (12) are arranged on the base (10), the avoidance groove (11) extends along the length direction of the base (10), the movable seat (30) is movably arranged in the avoidance groove (11), a linear bearing (33) is arranged on the movable seat (30), and the guide shaft (12) penetrates through the movable seat (30) and is matched with the linear bearing (33).
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| CN202410424186.7A CN118032538A (en) | 2024-04-09 | 2024-04-09 | Scoliosis external test device |
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