CN217566267U - Spine distractor for model building experiment of distraction spinal cord injury - Google Patents

Abstract

The utility model discloses a backbone tractive ware for tractive spinal cord injury modeling experiment, belong to medical equipment technical field, including location calliper, movable calliper, hold portion and guide rail spare, movable calliper establishes between location calliper and the hold portion, and with guide rail spare sliding fit, hold the portion and be connected the plate, the actuating lever, horizontal bevel gear, vertical bevel gear, rotate external member and threaded rod, horizontal bevel gear and vertical bevel gear intermeshing, one end of threaded rod runs through and rotates the external member and be connected with it, finally be connected with vertical bevel gear, another section and the movable calliper threaded connection of threaded rod, adopt the power conversion between horizontal bevel gear and the vertical bevel gear, be vertical with horizontal power transmission, be closer to the art person, can not blockked by the backbone of waiting to operate, make things convenient for art person rotatory power generation and operation; the locking operation of the spine to be clamped is met by pushing the switch of the locking piece with a single hand, the operation can be carried out with a single hand, the operation is convenient and fast, and the operation manipulation of an operator is saved.

Description

Spinal column distractor for model building experiment of distraction spinal cord injury

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a backbone tractive ware that is used for tractive nature spinal cord injury to make mould experiment.

Background

The incidence of the scoliosis is high in the population of China, and for the patients needing surgical correction, the most common and effective surgical method is to use the pedicle screw system for orthopedic internal fixation, so that the scoliosis can be effectively corrected, and the scoliosis can be prevented from aggravating. In severe scoliosis orthopedic surgery, spinal cord is stretched by distraction pressurization of the concave side of the spine and excessive longitudinal distraction of the spine, and therefore, distraction spinal cord injury occurs, motor, sensory and autonomic nerve dysfunction is caused, and paraplegia or quadriplegia can occur in severe patients. Because the repeatable and quantitative spinal column distractor is lacked in the spinal cord distraction injury modeling experiment at present, the distraction spinal cord injury modeling of experimental animals has the difficult problems of non-uniformity, poor repeatability of partial spinal column distractors and the like in the research field. Therefore, the spine distractor which can be used for manufacturing the distraction spinal cord injury in the simulation scoliosis orthopaedics is established, and has important significance for further researching the injury and treatment mechanism of the distraction spinal cord injury;

the conventional publication No. CN207755415U discloses a reproducible, gradable and quantitative experimental closed spine distractor, which comprises a fixed clamping arm and a movable clamping jaw, wherein the bottoms of the fixed clamping arm and the movable clamping jaw are respectively provided with two clamping heads for clamping a spine, two guide rods arranged in parallel are arranged between the fixed clamping arm and the movable clamping jaw, the fixed clamping arm is fixedly connected with the two guide rods, the movable clamping jaw is assembled on the two guide rods in a sliding manner, a screw rod transmission mechanism is further arranged between the two guide rods and the movable clamping jaw, the screw rod transmission mechanism comprises a threaded rod and a fixed block, the fixed block is fixedly connected with the two guide rods, the threaded rod penetrates out of the fixed block in a spiral manner and is fixedly connected with the movable clamping jaw, and a scale for measuring the displacement of the movable clamping jaw is fixed between the fixed block and the fixed clamping arm. The utility model discloses utilize lead screw drive mechanism to drive movable clamping jaw and remove, the displacement of activity clamping jaw is directly read out from the accessible scale. The utility model discloses can simulate and lead a tensile spinal cord injury, have can copy, gradable, the advantage that closure nature is good.

However, the above patent has the following two problems: firstly, the adjustment between the movable clamping jaw and the fixed block is longitudinally adjusted by rotating the handle, and the movable clamping jaw can be blocked by a patient to be operated in the operation process, so that the rotation force generation and the operation of an operator are inconvenient; secondly, the adjustment between chuck and the vertical arm is accomplished through the cooperation between bolt and the clamping sleeve, and is not very good in practice to be operated, and it is harder to twist up, has increased operative person's the operation degree of difficulty.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a backbone distractor for model experiment is made in tractive spinal cord injury to solve the technical problem that the aforesaid provided.

The embodiment of the utility model provides an adopt following technical scheme: the utility model provides a backbone tractive ware that is used for tractive spinal cord injury modeling experiment, its characterized in that, includes location calliper, activity calliper, holds portion and guide rail spare, location calliper and the portion of holding are established respectively in the head and the tail both ends of guide rail spare, and activity calliper is established between location calliper and the portion of holding to with guide rail spare sliding fit, the portion of holding is the connecting plate, can be vertical power conversion to the actuating lever of longitudinal power, horizontal bevel gear, vertical bevel gear, rotation external member and threaded rod, it installs roof and the lateral wall at the connecting plate to rotate the external member, horizontal bevel gear and vertical bevel gear intermeshing to set up in the connecting plate piece, the actuating lever is installed at the top of connecting the plate and is connected with rotating the external member, finally is connected with horizontal bevel gear, the one end of threaded rod runs through along the horizontal direction and is connected rather than the rotation external member, finally is connected with vertical bevel gear, another section and activity calliper threaded connection, be fixed with the scale that is used for measuring movable calliper displacement between connecting plate and the location calliper.

Further, the connecting plate is of a long-strip-shaped rectangular structure, the upper half part of the connecting plate is provided with a rectangular through groove, the rectangular through groove penetrates through the side wall of the connecting plate along the width direction of the connecting plate, the notch part of the rectangular through groove is provided with a detachable clamping plate, the top and the side wall of the connecting plate are respectively provided with an upper through hole and a side through hole, the upper through hole and the side through hole penetrate through the top and the side wall of the connecting plate and are communicated with the rectangular through groove, the rotating sleeve part is divided into an upper bearing part and a side bearing part, the upper bearing part is installed in the upper through hole, in an installation state, the driving rod is connected with the upper bearing part, the low end of the driving rod is connected with a transverse bevel gear, the threaded rod is connected with the side bearing part, and one end of the threaded rod is connected with a vertical bevel gear.

Furthermore, the driving rod comprises a hand-holding circular table and a connecting rod, the top end of the connecting rod is fixedly connected with the center of the bottom of the hand-holding circular table, the hand-holding circular table is of a cylindrical structure, a plurality of arc-shaped grooves which are uniformly distributed around the axis direction of the connecting rod are arranged on the outer circumferential wall of the hand-holding circular table, and each arc-shaped groove is provided with a fillet.

Furthermore, the side wall of the connecting plate is provided with a holding plate, one end of the holding plate is connected with the connecting plate through a screw, and the bottom of the holding plate is provided with a holding groove matched with the hand of an operator.

Further, the guide rail part comprises two guide rods and a plurality of locking nuts, through holes for the two guide rods to penetrate through are formed in the positioning calipers, the movable calipers and the connecting plate block, the two guide rods penetrate through the three in sequence, one end of each guide rod is fixedly connected with the positioning calipers, the other end of each guide rod penetrates through the movable calipers, and finally the guide rail part is fixed on the connecting plate block through the locking nuts

Further, location calliper and activity calliper all include fixed arm lock, remove arm lock and locking piece, be equipped with on the fixed arm lock and supply to remove the gliding holding tank of arm lock, the locking piece setting is on removing the arm lock, and along with the removal of removing the arm lock, the locking piece removes together, and the locking piece can be to fixed arm lock and removal arm lock.

Further, the movable clamping arm comprises a movable plate, a movable clamping jaw and a plurality of sliding wheel sets, the movable plate and the movable clamping jaw are integrally formed, all the sliding wheel sets are uniformly divided into two groups and symmetrically distributed at the upper part and the lower part of the movable plate, each sliding wheel set comprises a linkage rod and two sliding wheels, the two sliding wheels are symmetrically distributed at two sides of the movable plate and connected through the linkage rod, the movable plate is provided with a linkage hole for the linkage rod to penetrate through,

further, fixed arm lock runs through piece and fixed clamping jaw including pressing from both sides arm sleeve, guide arm, it is the rectangle structure to press from both sides the arm sleeve, the guide arm runs through the piece and establishes in the holding tank of pressing from both sides the arm sleeve and is located intermediate position department, the guide arm runs through the through-hole that runs through that is equipped with on the piece and corresponds the setting with the through-hole that presss from both sides the arm sleeve, fixed clamping jaw sets up in the bottom that presss from both sides the arm sleeve, be equipped with four symmetries on the cell wall of holding tank respectively and supply all movable sliding trays that the movable pulley holds the removal, every sliding tray all runs through the lateral wall that presss from both sides the arm sleeve, it is equipped with a plurality of locking jacks, all to press from both sides on the lateral wall of arm sleeve that keeps away from the locking piece the locking jack is along the equidistant setting of width direction that presss from the arm sleeve.

Further, the locking piece includes that locking inserted bar, hand grip piece and locking button, the locking inserted bar sets up the one end at activity plate top, and under the lock-out state, the locking inserted bar is located the activity plate and runs through the inside position of piece near the guide arm, the locking inserted bar runs through the activity plate along the width direction of tong arm cover, and corresponds the position setting of locking jack, the other end of locking inserted bar outwards extends, the hand grips the piece setting on the extension section of locking inserted bar, and the locking inserted bar runs through the hand and grips the piece, locking button establishes the tip at the locking inserted bar and presses close to the hand and grips the piece setting, locking button holds between the piece with the hand and leaves fixed distance, fixed distance more than or equal to is locking the distance between the inserted bar other end and the locking jack under the sliding condition.

Furthermore, the inner sides of the fixed clamping jaw and the movable clamping jaw are both arc surfaces, and the inner sides are both provided with anti-slip pads.

Further, the threaded rod rotates a circle, the moving distance of the movable calipers is 0.5 mm, and the precision of the scale is 0.1 mm.

The embodiment of the utility model provides an above-mentioned at least one technical scheme who adopts can reach following beneficial effect:

one of them, mode through drive activity calliper, adopt the power conversion between horizontal bevel gear and the vertical bevel gear, be vertical with horizontal power transmission, compare fore-and-aft rotatory handle in prior art, with the actuating lever on the connection plate vertical direction more be close to the art person, the backbone that can not be treated the operation blocks, make things convenient for the rotatory power of having an effect of art person and operation, and it is more exquisite than the mode of direct rotating threaded rod among the prior art to come transmission power through bevel gear, the operation mode can be more accurate, moreover, the comfort level that whole device used has been improved, and efficient effect.

It is two, it can to remove along the direction removal of perpendicular to guide arm through the one-hand pulling locking piece, remove the position removal of fixed arm lock towards keeping away from that the arm lock just can be slow, the opening of fixed arm lock and removal arm lock position has been realized, after position control finishes, also be the switch through one-hand promotion locking piece, just can be with fixed arm lock, remove arm lock and locking piece three and accomplish the locking, and then satisfied the locking operation of treating the centre gripping backbone, the one-hand can be operated, high convenience and fast, practice thrift operative person's operation gimmick.

Thirdly, after the operation is finished, when the spine needs to be loosened and detached, the operation is very convenient, only an operator needs to extract the locking button and the locking insertion rod in the locking insertion hole by one hand, the locking and loosening are very convenient, and time and labor are saved.

Fourthly, the setting of all arc walls is when making the art person operate again and hold the round platform, the area of contact of art person's hand with holding the round platform has been increased, contact friction has been increased, the stability of operation has further been improved, so hold setting up of round platform and made things convenient for holding of art person on the one hand, the comfort of operating instrument has been improved, on the other hand holds the position removal that the round platform can do up more accurate, more convenient drive activity calliper through rotatory hand, the backbone of centre gripping is treated in final locking that can be accurate.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

fig. 1 is a schematic view of a first-angle three-dimensional structure of the present invention;

fig. 2 is a schematic view of a second angle three-dimensional structure of the present invention;

FIG. 3 is a schematic view of a partial three-dimensional structure of the present invention;

FIG. 4 is a partial enlarged view of FIG. 3;

FIG. 5 is a schematic view of the assembled three-dimensional structure of the present invention;

FIG. 6 is a sectional view of the movable caliper according to the present invention;

fig. 7 is a three-dimensional sectional view of the positioning caliper of the present invention;

fig. 8 is a hair enlarged view at B in fig. 7.

Reference numerals: the positioning caliper comprises a positioning caliper 1, a movable caliper 2, a hand holding portion 3, a connecting plate 31, a rectangular through groove 311, a clamping plate 312, a hand holding plate 313, a holding groove 314, a driving rod 32, a hand holding circular truncated cone 321, a connecting rod 322, an arc-shaped groove 323, a transverse bevel gear 33, a vertical bevel gear 34, a rotating sleeve 35, an upper bearing part 351, a side bearing part 352, a threaded rod 36, a guide rail part 4, a guide rod 41, a locking nut 42, a scale 5, a fixed clamping arm 6, a clamping arm sleeve 61, a guide rod penetrating block 62, a fixed clamping jaw 63, a sliding groove 64, a locking jack 65, a movable clamping arm 7, a movable plate 71, a movable clamping jaw 72, a sliding wheel group 73, a linkage rod 731, a sliding wheel 732, a locking piece 8, a locking inserted rod 81, a hand holding block 82, a locking button 83 and a receiving groove 9.

Detailed Description

To make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solution of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 8, an embodiment of the present invention provides a spinal column distractor for a distraction spinal cord injury modeling experiment, including a positioning caliper 1, a movable caliper 2, a holding portion 3 and a guide rail 4, the positioning caliper 1 and the holding portion 3 are respectively disposed at the head and tail ends of the guide rail 4, the movable caliper 2 is disposed between the positioning caliper 1 and the holding portion 3 and is in sliding fit with the guide rail 4, the holding portion 3 is divided into a connecting plate 31, a driving rod 32, a transverse bevel gear 33, a vertical bevel gear 34, a rotation external member 35 and a threaded rod 36, the rotation external member 35 is mounted on the top wall and the side wall of the connecting plate 31, the transverse bevel gear 33 and the vertical bevel gear 34 are engaged with each other and are disposed in the connecting plate 31, the driving rod 32 is mounted on the top of the connecting plate 31 and is connected with the rotation external member 35, and is finally connected with the transverse bevel gear 33, one end of the threaded rod 36 runs through the rotation external member 35 in the horizontal direction and is connected with the vertical bevel gear 34, the other section of the threaded rod 36 is connected with the movable caliper 2, and a scale 5 for measuring displacement of the movable caliper 5 is fixed between the connecting plate 31 and the positioning caliper 1;

when a spine to be clamped needs to be fixed, according to a clamping size required in advance, the position between the positioning caliper 1 and the movable caliper 2 is preset, then specific digital size is carried out to finish accurate clamping and locking, the specific operation steps are that a driving rod 32 is manually rotated by medical staff to drive a transverse bevel gear 33 to rotate, the transverse bevel gear 33 can transmit vertical power to a vertical bevel gear 34 meshed with the transverse bevel gear 33, the vertical bevel gear 34 is connected with a threaded rod 36 and can drive the threaded rod 36 to rotate, and the threaded rod 36 is in threaded fit with the movable caliper 2, so that the movable caliper 2 can be finally driven to horizontally move on a guide rail piece 4;

through the mode of above-mentioned drive activity calliper 2, adopt the power conversion between horizontal bevel gear 33 and the vertical bevel gear 34, be vertical with horizontal power transmission, compare in prior art fore-and-aft rotatory handle, with connecting the actuating lever 32 on the 31 vertical direction of plate more be close to the art person, can not blockked by the backbone of treating the operation, make things convenient for the rotatory power of having an effect and operation of art person, and it is more exquisite than the mode of direct rotating threaded rod 36 among the prior art to come transmission power through bevel gear, the operation mode can be more accurate, moreover, the comfort level that whole device used has been improved, and efficient effect.

The connecting plate 31 is of a long strip rectangular structure, a rectangular through groove 311 is formed in the upper half portion of the connecting plate 31, the rectangular through groove 311 penetrates through the side wall of the connecting plate 31 in the width direction of the connecting plate 31, detachable clamping plates 312 are arranged at the notch portions of the rectangular through groove 311, an upper through hole and a side through hole are formed in the top and the side wall of the connecting plate 31 respectively, the upper through hole and the side through hole penetrate through the top and the side wall of the connecting plate 31 and are communicated with the rectangular through groove 311, the rotating sleeve 35 is divided into an upper bearing part 351 and a side bearing part 352, the upper bearing part 351 is installed in the upper through hole, in an installation state, the driving rod 32 is connected with the upper bearing part 351, the lower end of the driving rod 32 is connected with the transverse bevel gear 33, the threaded rod 36 is connected with the side bearing part 352, and one end of the threaded rod 36 is connected with the vertical bevel gear 34; move on the guide rail spare 4 as needs constantly drive activity calliper 2, the circumference through actuating lever 32 is rotated and can be constantly by horizontal conversion into vertically with the power source, cooperation through upper bearing part 351 and side bearing part 352 can realize stably, firm with the power transmission, reduce the loss in the power transmission in-process as far as possible, moreover set up two cardboard 312 at rectangle through groove 311 notch, can accomplish the installation of all spare parts in earlier stage, the later stage also can dismantle it if the damage of product part, accomplish the change of spare part, it is convenient that the maintenance provides for the use in later stage.

The drive rod 32 comprises a hand-held circular table 321 and a connecting rod 322, the top end of the connecting rod 322 is fixedly connected with the center of the bottom of the hand-held circular table 321, the hand-held circular table 321 is of a cylindrical structure, the outer circumferential wall of the hand-held circular table 321 is provided with a plurality of arc-shaped grooves 323 which are uniformly distributed around the axis direction of the connecting rod 322, and each arc-shaped groove 323 is provided with a fillet; adopt and hold round platform 321 and connecting rod 322's structural style, in order to let the art person redrive movable caliper 2 remove, it is more convenient, because the size of holding round platform 321 is the several times of connecting rod 322, the hand size of the hand of art person has been satisfied, and for cylindrical structure art person conveniently holds, the art person of being more convenient for sends out power, the setting of all arc walls 323 is when making art person's manipulation hand round platform 321 again, the area of contact of art person's hand and hand round platform 321 has been increased, contact friction has been increased, the stability of operation has further been improved, so the setting of holding round platform 321 has made things convenient for art person's holding on the one hand, the comfort of operating instrument has been improved, on the other hand can do more accurate through rotatory hand round platform 321, more convenient position of drive movable caliper 2 moves, the backbone of centre gripping is treated in final locking that can be accurate.

The side wall of the connecting plate 31 is provided with a holding plate 313, one end of the holding plate 313 is connected with the connecting plate 31 through a screw, the bottom of the holding plate 313 is provided with a holding groove 314 matched with the hand of an operator, the design of the position improves the stability of holding the whole device in the re-operation process of the operator on one hand, and the arrangement of the holding groove 314 on the holding plate 313 improves the comfort of holding of the operator on the other hand; furthermore through the screw with holding board 313 locking on connecting plate 31, use wearing and tearing or the difference of different art person's hand types in later stage, can realize dismantling the change, improve the different application scenarios's of device suitability to and the maintenance use in later stage has been ensured.

The guide rail part 4 comprises two guide rods 41 and a plurality of locking screw caps 42, through holes for the two guide rods 41 to penetrate through are formed in the positioning calipers 1, the movable calipers 2 and the connecting plate block 31, the two guide rods 41 penetrate through the three parts in sequence, one end of each guide rod 41 is fixedly connected with the positioning calipers 1, the other end of each guide rod 41 penetrates through the movable calipers 2, and finally the other end of each guide rod is fixed on the connecting plate block 31 through the locking screw caps 42, the two guide rods 41 play a role in supporting the positioning calipers 1, the movable calipers 2 and the connecting plate block 31, the sliding effect of the movable calipers 2 is met, when the threaded rod 36 continuously transmits power to the movable calipers 2, longitudinal limitation is achieved through the two guide rods 41, the circumferential rotating power transmitted to the movable calipers 2 by the threaded rod 36 can be converted into the longitudinal power of the movable calipers 2, the conversion of the direction of the completed power is achieved, and the transmission of the power is achieved.

The positioning caliper 1 and the movable caliper 2 both comprise a fixed clamping arm 6, a movable clamping arm 7 and a locking piece 8, the fixed clamping arm 6 is provided with a containing groove 9 for the movable clamping arm 7 to slide, the locking piece 8 is arranged on the movable clamping arm 7 and moves along with the movable clamping arm 7, the locking piece 8 moves together, the position between the fixed clamping arm 6 and the movable clamping arm 7 is adjusted according to the different sizes of the spine to be clamped, after the position is adjusted, the fixed clamping arm 6 and the movable clamping arm 7 are locked by the locking piece 8, and through the synchronous movement of the movable clamping arm 7 and the locking piece 8, make things convenient for operation of art person, when the art person need adjust fixed arm lock 6 and remove the position between the arm lock 7, only need to take off through the one hand and pull locking piece 8 along the direction removal of perpendicular to guide arm 41 can, remove arm lock 7 and just can be slow move towards the position of keeping away from fixed arm lock 6, realized opening of fixed arm lock 6 and removal arm lock 7 position, after position control finishes, also be the switch through one hand promotion locking piece 8, just can be with fixed arm lock 6, remove arm lock 7 and 8 three of locking piece and accomplish the locking, and then satisfied the locking operation of treating the centre gripping backbone.

The movable clamping arm 7 comprises a movable plate 71, a movable clamping jaw 72 and a plurality of sliding wheel sets 73, the movable plate 71 and the movable clamping jaw 72 are integrally formed, all the sliding wheel sets 73 are uniformly divided into two groups and symmetrically distributed at the upper part and the lower part of the movable plate 71, each sliding wheel set 73 is divided into a linkage rod 731 and two sliding wheels 732, the two sliding wheels 732 are symmetrically distributed at two sides of the movable plate 71, the two sliding wheels 732 are connected through the linkage rod 731, a linkage hole for the linkage rod 731 to penetrate through is formed in the movable plate 71, when an operator needs to drive the whole movable clamping arm 7 to move, all the sliding wheels 732 on the movable plate 71 can slide in the fixed clamping arm 6 by pulling a locking piece 8 connected with the movable clamping arm 7, and all the sliding wheels 732 are arranged to convert the sliding friction of the movable plate 71 into the rolling friction of the sliding wheels 732, so that the operation is convenient, time-saving and labor-saving.

Fixed arm sleeve 6 includes that clamp arm sleeve 61, guide arm run through piece 62 and fixed clamping jaw 63, clamp arm sleeve 61 is the rectangle structure, the guide arm runs through piece 62 and establishes in clamp arm sleeve 61's holding tank 9 and be located intermediate position department, the guide arm runs through the through-hole that is equipped with on the piece 62 and corresponds the setting with clamp arm sleeve 61's through-hole, when guide arm 41 needs fixed whole fixed arm lock 6, together run through the outer through-hole of clamp arm sleeve 61 and, the guide arm runs through the through-hole on the piece 62, the design of this kind of structure, when removing whole movable clamping arm 7's position, the position of removal clamp arm 7 just can not be restricted to guide arm 41's position, because removal clamp arm 7 runs through piece 62 with the guide arm and is in the structure of mutual contact and alternate segregation, fixed clamping jaw 63 sets up the bottom at clamp arm sleeve 61, be equipped with four symmetries on the cell wall of 9 respectively and supply all pulleys 732 to hold the sliding tray 64 that moves, every sliding tray 64 all runs through clamp arm sleeve 61's lateral wall, be equipped with a plurality of locking jack 65 on the lateral wall of keeping away from locking arm sleeve 61 the locking piece 8 the locking jack 65, all locking jack 65 sets up along the locking clamp arm sleeve 61 the locking clamp arm sleeve's width spare direction the locking piece and the adjustable control can be adjusted and control the convenient regulation and control the locking piece between the convenient state 71, the locking piece 71 that the locking piece is convenient jack 71, the locking jack 71 that the locking piece that the locking jack 71 that the locking piece that adjusts and controls under the locking piece that the locking piece is convenient.

The locking piece 8 comprises a locking inserted bar 81, a hand holding block 82 and a locking button 83, the locking inserted bar 81 is arranged at one end of the top of the movable plate 71, the locking inserted bar 81 is positioned at the position, close to the guide rod, of the movable plate 71 and penetrates through the inner part of the block 62, the locking inserted bar 81 penetrates through the movable plate 71 along the width direction of the clamp arm sleeve 61 and corresponds to the position of the locking insertion hole 65, the other end of the locking inserted bar 81 extends outwards, the hand holding block 82 is arranged on the extending section of the locking inserted bar 81, the locking inserted bar 81 penetrates through the hand holding block 82, the locking button 83 is arranged at the end part of the locking inserted bar 81 and is close to the hand holding block 82, a fixed distance is reserved between the locking button 83 and the hand holding block 82, the fixed distance is larger than or equal to the distance between the other end of the locking inserted bar 81 and the locking insertion hole 65 in the sliding state, when the fixed clamping jaw 63 and the movable clamping jaw 72 need to be adjusted according to different spine widths, the operator pulls the hand holding block 82, because the hand holding block 82, the locking inserted bar 81, the locking button 83, the movable plate 71 and the movable clamping jaw 72 are linked, the operator can drive the hand holding block 82, the locking inserted bar 81, the locking button 83, the movable plate 71 and the movable clamping jaw 72 to move together along the width direction of the clamping arm sleeve 61, when the hand holding block moves to a certain preset position and is the optimal position for clamping the spine, the operator can directly press the locking button 83 at the moment, the other end of the locking inserted bar 81 is inserted into the locking inserted hole 65, the locking operation on the movable plate 71 is completed, compared with the bolt fixing mode in the prior art, the fixing of the movable clamping jaw 72 can be operated by one hand, the operation method is convenient and fast, the operation method of the operator is saved, and when the spine needs to be loosened after the operation is finished, the operation is also very convenient, only the operator needs to pull out the locking button 83 and the locking inserted bar 81 in the locking inserting hole 65 with one hand, the locking and the releasing are very convenient, and the time and the labor are saved.

The inner sides of the fixed clamping jaw 63 and the movable clamping jaw 72 are arc surfaces, and anti-slip pads are arranged on the inner sides of the fixed clamping jaw and the movable clamping jaw, so that the spine can be clamped conveniently, and the stability is improved.

The threaded rod 36 rotates a circle, the distance that the movable caliper 2 moves is 0.5 mm, the precision of the scale 5 is 0.1 mm, the adjustment is more accurate, and the clamping is more convenient to fasten.

The working principle is as follows: when an operator fixes and clamps a spine to be clamped, firstly when the spine to be clamped needs to be fixed, according to the clamping size required in advance, the position between the positioning caliper 1 and the movable caliper 2 is preset, then the precise clamping and locking are completed by specific digital size, the specific operation steps are that the driving rod 32 is manually rotated by medical personnel to drive the transverse bevel gear 33 to rotate, the transverse bevel gear 33 can transmit vertical power to the vertical bevel gear 34 meshed with the transverse bevel gear 33, the threaded rod 36 can be driven to rotate because the vertical bevel gear 34 is connected with the threaded rod 36, and the threaded rod 36 is in threaded fit with the movable caliper 2, so that the movable caliper 2 can be finally driven to horizontally move on the guide rail piece 4, the process is preset according to the preset clamping size, and the fixed clamping of the spine to be clamped in the length direction can be preliminarily fixed after the adjustment is completed, the clamping widths of the positioning calipers 1 and the movable calipers 2 are adjusted according to the transverse width of a spine to be clamped, an operator pulls the hand-held block 82, the locking inserted bar 81, the locking button 83, the movable plate 71, all the sliding wheels 732 and the movable clamping jaws 72 are linked, all the sliding wheels 732 are used for converting the sliding friction of the movable plate 71 into the rolling friction of the sliding wheels 732, the operator can drive the movable plates 71 and the movable clamping jaws 72 to move together along the width direction of the clamping arm sleeve 61, after the movable plates are moved to a certain preset position and are in the optimal position for clamping the spine, the movable plates 71 and the movable clamping jaws 72 need to be locked, at the moment, the operator can directly press the locking button 83 to insert the other end of the locking inserted bar 81 into the locking insertion hole 65 to complete the locking operation of the movable plates 71, accomplish the locking promptly to the backbone on width direction, the rethread setting and after the operation, when need to unload the backbone pine, it is also very convenient to operate, only need the operator singlehanded with locking button 83 and locking inserted bar 81 extract in locking jack 65 can, the locking pine is unloaded all very conveniently, labour saving and time saving.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (10)

1. The utility model provides a backbone tractive ware for tractive spinal cord injury modeling experiment, characterized in that, including location calliper (1), activity calliper (2), hand (3) and guide rail spare (4), location calliper (1) and hand (3) are established respectively at the head and the tail both ends of guide rail spare (4), and activity calliper (2) are established between location calliper (1) and hand (3) to with guide rail spare (4) sliding fit, hand (3) are divided into connecting plate (31), actuating lever (32), horizontal bevel gear (33), vertical bevel gear (34), rotate external member (35) and threaded rod (36), rotate external member (35) and install the roof and the lateral wall that connect plate (31), horizontal bevel gear (33) and vertical bevel gear (34) mesh each other, and set up in connecting plate (31), actuating lever (32) are installed at the top that plate connects plate (31) and are connected with rotation external member (35), finally are connected with horizontal bevel gear (33), one end of threaded rod (36) runs through horizontal direction and rotate external member (35) and be connected with rotation external member (35) between plate (35) and be connected with another activity calliper (2), it is connected with the measurement calliper (2) and the activity calliper (2) and threaded rod (36) are connected, it is connected with the location calliper (2) and the activity calliper (2) is connected with the threaded rod (3) is connected with the horizontal bevel gear (32) and the other, and the measuring of the movable calliper is connected with the movable calliper (3) is connected with the horizontal bevel gear (32) is connected with the fixed in that the fixed, and the movable calliper (31) A scale (5) of displacement.

2. The spinal distractor for modeling experiments on distraction spinal cord injury according to claim 1, it is characterized in that the connecting plate block (31) is of a long strip rectangular structure, the upper half part of the connecting plate block (31) is provided with a rectangular through groove (311), the rectangular through groove (311) penetrates through the side wall of the connecting plate block (31) along the width direction thereof, the notch parts of the rectangular through groove (311) are all provided with detachable clamping plates (312), the top and the side wall of the connecting plate (31) are respectively provided with an upper through hole and a side through hole, the upper through hole and the side through hole are both penetrated through the top and the side wall of the connecting plate block (31), and are communicated with the rectangular through groove (311), the rotating sleeve (35) is divided into an upper bearing part (351) and a side bearing part (352), the upper bearing part (351) is installed in the upper through hole, in the mounting state, the driving rod (32) is connected with the upper bearing (351), the lower end of the driving rod (32) is connected with the transverse bevel gear (33), the threaded rod (36) is connected with the side bearing component (352), one end of the threaded rod (36) is connected with the vertical bevel gear (34), the side wall of the connecting plate (31) is provided with a hand-holding plate (313), one end of the hand-holding plate (313) is connected with the connecting plate (31) through a screw, the bottom of each hand-holding plate (313) is provided with a holding groove (314) which is inosculated with the hand of an operator.

3. The spine distractor for the stretch-type spinal cord injury modeling experiment of claim 2, wherein the driving rod (32) comprises a hand-holding circular table (321) and a connecting rod (322), the top end of the connecting rod (322) is fixedly connected with the center of the bottom of the hand-holding circular table (321), the hand-holding circular table (321) is of a cylindrical structure, the outer circumferential wall of the hand-holding circular table (321) is provided with a plurality of arc-shaped grooves (323) which are uniformly distributed around the axis direction of the connecting rod (322), and each arc-shaped groove (323) is provided with a round corner.

4. The spine distractor for the modeling experiment of the distraction spinal cord injury according to claim 1, wherein the rail member (4) comprises two guide rods (41) and a plurality of locking nuts (42), through holes for the two guide rods (41) to pass through are formed in the positioning caliper (1), the movable caliper (2) and the connecting plate (31), the two guide rods (41) pass through the three guide rods in sequence, one end of each guide rod (41) is fixedly connected with the positioning caliper (1), the other end of each guide rod passes through the movable caliper (2), and finally the guide rods are fixed on the connecting plate (31) through the locking nuts (42).

5. The spinal column distractor for the model building experiment of the distraction spinal cord injury according to claim 1, wherein the positioning caliper (1) and the movable caliper (2) each comprise a fixed clamping arm (6), a movable clamping arm (7) and a locking member (8), the fixed clamping arm (6) is provided with a receiving slot (9) for the movable clamping arm (7) to slide, the locking member (8) is arranged on the movable clamping arm (7), and the locking member (8) moves together with the movable clamping arm (7), and the locking member (8) can lock the fixed clamping arm (6) and the movable clamping arm (7).

6. The spine distractor for the modeling experiment of the distraction spinal cord injury according to claim 5, wherein the movable clamping arms (7) comprise a movable plate (71), a movable clamping jaw (72) and a plurality of sliding wheel sets (73), the movable plate (71) and the movable clamping jaw (72) are integrally formed, all the sliding wheel sets (73) are uniformly divided into two groups and symmetrically distributed at the upper part and the lower part of the movable plate (71), each sliding wheel set (73) is divided into a linkage rod (731) and two sliding wheels (732), the two sliding wheels (732) are symmetrically distributed at two sides of the movable plate (71), the two sliding wheels (732) are connected through the linkage rod (731), and the movable plate (71) is provided with a linkage hole for the linkage rod (731) to penetrate through.

7. The spine distractor for the stretch-type spinal cord injury modeling experiment according to claim 6, wherein the fixed clamping arm (6) comprises an arm clamping sleeve (61), a guide rod penetrating block (62) and a fixed clamping jaw (63), the arm clamping sleeve (61) is of a rectangular structure, the guide rod penetrating block (62) is arranged in a containing groove (9) of the arm clamping sleeve (61) and located at a middle position, a penetrating through hole corresponding to the penetrating hole of the arm clamping sleeve (61) is formed in the guide rod penetrating block (62), the fixed clamping jaw (63) is arranged at the bottom of the arm clamping sleeve (61), four sliding grooves (64) are symmetrically arranged on the groove wall of the containing groove (9) and used for all sliding wheels (732) to contain movement, each sliding groove (64) penetrates through the side wall of the arm clamping sleeve (61), a plurality of locking insertion holes (65) are formed in the side wall of the arm clamping sleeve (61) far away from the locking piece (8), and all the locking insertion holes (65) are arranged at equal intervals along the width direction of the arm clamping sleeve (61).

8. The spinal distractor for distraction spinal cord injury modeling experiments according to claim 7, wherein the locking piece (8) comprises a locking insertion rod (81), a hand-holding block (82) and a locking button (83), the locking insertion rod (81) is disposed at one end of the top of the movable plate (71), in the locking state, the locking insertion rod (81) is located at a position where the movable plate (71) is close to the inside of the guide rod penetrating block (62), the locking insertion rod (81) penetrates the movable plate (71) along the width direction of the arm clamping sleeve (61) and is disposed corresponding to the position of the locking insertion hole (65), the other end of the locking insertion rod (81) extends outward, the hand-holding block (82) is disposed on the extending section of the locking insertion rod (81), the locking insertion rod (81) penetrates the hand-holding block (82), the locking button (83) is disposed at the end of the locking insertion rod (81) and is disposed close to the hand-holding block (82), the distance between the locking button (83) and the hand-holding block (82) is greater than the fixed distance between the other end of the locking insertion rod (81) and the fixed insertion hole (65).

9. The spinal column distractor for the modeling experiment of the distraction spinal cord injury according to claim 8, wherein the inner sides of the fixed clamping jaw (63) and the movable clamping jaw (72) are both arc surfaces, and are provided with anti-skid pads.

10. The spinal distractor for the modeling experiment of the spinal cord injury with distraction according to claim 1, wherein the threaded rod (36) rotates one turn, the movable caliper (2) moves a distance of 0.5 mm, and the precision of the scale (5) is 0.1 mm.

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