CN115153693A - Spine minimally invasive multifunctional strutting device - Google Patents

Abstract

The invention relates to the field of surgical auxiliary appliances, in particular to a spine minimally invasive multifunctional distraction device which comprises supporting plates, wherein the bottom ends of the two supporting plates are respectively provided with an installation mechanism, the upper ends of the two supporting plates are respectively provided with an inserting plate, the bottom ends of the two inserting plates are respectively inserted into a pair of supporting plates, the outer sides of the two supporting plates are respectively in threaded connection with a second bolt, and the upper ends of the two inserting plates are respectively fixed with a first jacking block and a second jacking block; be equipped with two slides between first kicking block and the second kicking block, be equipped with on the first kicking block lateral wall with the guide slot of two slide looks adaptations, two slide one end all with guide slot sliding connection. The strutting effect is better, and stability is stronger, prevents not hard up phenomenon to appear in doctor's operation process to guarantee to notched effect of strutting, can extrude the second spring strutting the in-process, play certain cushioning effect, prevent that the power from being too strong and cause the strain condition to the incision, can adapt to different incision sizes, adaptability is stronger.

Description

Spine minimally invasive multifunctional strutting device

Technical Field

The invention relates to the field of surgical auxiliary instruments, in particular to a minimally invasive multifunctional spinal column distraction device.

Background

The minimally invasive spine surgery technology is characterized in that large incisions are avoided under certain medical risks, tiny incisions or puncture channels are adopted, special instruments and devices are used, under the monitoring of an image instrument or the guidance of a navigation technology, various miniature manual or electric instruments and equipment are used for reaching lesion positions from normal anatomical structures, the whole operation process is completed under a visual condition, and the purposes of being small in incision, small in tissue trauma, less in bleeding, high in operation accuracy, positive in effect and fast in postoperative function recovery compared with the traditional or standard spine surgery are achieved.

In order to guarantee the visibility when the operation, need strut the incision with the help of strutting the device usually, thereby be convenient for doctor's operation, generally strut the incision through strutting pincers at present, it is less to the notched scope that struts to singly strut the pincers, the doctor's operation of being not convenient for, when the incision is great, still need use a plurality of pincers that strut, stability is relatively poor, in the actual operation process, it shifts and the obscission easily to appear to strut the pincers, the influence is to the notched effect of strutting, and simultaneously, when needing to insert the endoscope to the incision, still need the handheld endoscope pipeline of next door medical personnel, extravagant manpower.

Disclosure of Invention

Aiming at the problems that in the prior art, in order to ensure visibility, an incision is usually required to be opened by means of an opening device, so that the operation of a doctor is convenient, the incision is usually opened by opening forceps, the opening range of a single opening forceps to the incision is small, the operation of the doctor is inconvenient, when the incision is large, a plurality of opening forceps are required, the stability is poor, the opening forceps are easy to deviate and fall off in the actual operation process, the opening effect of the incision is influenced, and meanwhile, when an endoscope is required to be inserted into the incision, a medical worker beside the incision is required to hold an endoscope pipeline, so that manpower is wasted.

The technical scheme adopted by the invention for solving the technical problems is as follows: a spine minimally invasive multifunctional strutting device comprises supporting plates, wherein the bottom ends of the two supporting plates are respectively provided with an installing mechanism, the upper ends of the two supporting plates are respectively provided with an inserting plate, the bottom ends of the two inserting plates are respectively inserted into opposite supporting plates, the outer sides of the two supporting plates are respectively in threaded connection with a second bolt, and the upper ends of the two inserting plates are respectively fixed with a first jacking block and a second jacking block; two sliding plates are arranged between the first ejector block and the second ejector block, guide grooves matched with the two sliding plates are formed in the side wall of the first ejector block, one ends of the two sliding plates are connected with the guide grooves in a sliding mode, through holes matched with the two sliding plates are formed in the second ejector block, the other ends of the two sliding plates penetrate through the second ejector block through the through holes, and an adjusting mechanism is arranged on the outer side of the second ejector block; the two sliding plates are respectively provided with two openings, two connecting blocks are respectively arranged on two sides of the two openings, the two connecting blocks are respectively fixed at the upper ends of the two sliding plates, the upper ends of the two sliding plates are respectively provided with a first transverse plate and a second transverse plate, and the first transverse plate and the second transverse plate are respectively fixedly connected with the corresponding two connecting blocks; the upper end of the first transverse plate is provided with a plurality of positioning grooves, two first sliding blocks are movably sleeved on the first transverse plate, positioning mechanisms are arranged at the upper ends of the two first sliding blocks, the bottom ends of the two positioning mechanisms are inserted into the corresponding positioning grooves, one sides of the two first sliding blocks are fixedly connected with extension cylinders, the second transverse plate is movably sleeved with two second sliding blocks, one sides of the two second sliding blocks are fixedly connected with extension rods, one ends of the two extension rods are inserted into the corresponding extension cylinders, supporting mechanisms are arranged at the upper ends of the two extension cylinders, clamping mechanisms are arranged at the two sides of the bottom end of each supporting mechanism, and the two clamping mechanisms correspond to the two extension cylinders respectively; two first slider bottom and two second slider bottoms all run through corresponding slide, two through corresponding opening first slider bottom and two second slider bottoms all are equipped with the mechanism that struts.

Specifically, adjustment mechanism includes two fixed blocks, screw rod, gum cover and dead lever, two fixed block fixed connection is in the second kicking block outside, two rotate between the fixed block and be connected with the screw rod, screw rod and two slide one end threaded connection, screw rod central point puts the fixed gum cover that has cup jointed, dead lever fixed connection is in the opening, the dead lever cup joints with two slide activities.

Specifically, the supporting mechanism includes two lagging, extension board, two slots, four side pieces, four side grooves and through-hole, the extension board is located between two lagging, two the lagging opposite side all is equipped with the slot, the extension board both ends are inserted respectively and are established in two slots, extension board and two slot looks adaptations, two side pieces of equal fixedly connected with in the extension board both ends outside, two all be equipped with the side groove on the wall of slot both sides, four the side piece respectively with four side groove sliding connection, four the side piece all with correspond side groove looks adaptations, extension board central point puts and is equipped with the through-hole.

The fixture comprises two bottom blocks, two limit blocks, a plurality of connecting rods, a plurality of third springs and two clamping blocks, wherein the bottom blocks are fixedly connected to the bottom end of the sleeve plate and are in close contact with the two sides of the corresponding extending cylinder, the clamping blocks are fixedly connected with a plurality of connecting rods on the opposite sides of the clamping blocks, the connecting rods are movably connected with the two bottom blocks in a sleeved mode, the connecting rods are fixedly connected with the two limit blocks and are far away from one ends of the clamping blocks, the clamping blocks are fixedly connected with the two limit blocks, the clamping blocks are fixedly connected with the corresponding bottom blocks, and the third springs are arranged on the periphery of the connecting rods in a sleeved mode.

Specifically, two installation mechanism all includes first bolt, guide arm, installation piece and concave piece, installation piece fixed connection is in the backup pad bottom, and installation piece one side is equipped with concave piece, be equipped with first bolt between concave piece and the installation piece, first bolt and installation piece threaded connection, first shank of bolt wall end rotates with concave piece to be connected, first bolt bottom is equipped with the guide arm, guide arm one end and concave piece fixed connection, the guide arm cup joints with installation piece activity.

Specifically, two strutting mechanism all includes two vaulting poles, first fagging, second fagging, two telescopic links and two second springs, two the vaulting pole is fixed respectively in two first slider bottoms, two vaulting pole bottom one side is fixed with first fagging and second fagging respectively, second fagging one end is inserted and is established in first fagging, first fagging and second fagging and correspond equal fixedly connected with telescopic link and second spring between the vaulting pole, two the second spring is established respectively the cover and is established at two telescopic links peripherally.

Specifically, two positioning mechanism all includes draws the piece, draws piece, first spring and locating lever, draw the piece to be located first slider upper end, draw a piece bottom vertical fixation to have the locating lever, the locating lever cup joints with first slider activity, the locating lever bottom is inserted and is established in corresponding constant head tank, locating lever and positioning groove looks adaptation, draw the first spring of fixedly connected with between piece and the first slider, first spring housing is established at the locating lever periphery.

Specifically, the direction of rotation of the internal threads of the two sliding plates in threaded connection with the screw rod is opposite.

The invention has the beneficial effects that:

(1) According to the minimally invasive multifunctional distraction device for the spine, the height of the distraction mechanism is adjusted by rotating the two second bolts and vertically sliding the two inserting plates, so that the distraction mechanism corresponds to the incision, the two second bolts are screwed after adjustment is finished, then the two pulling blocks are pulled upwards according to the size of the actual incision, the two pulling blocks drive the two positioning rods to move upwards to separate the two positioning rods from the two positioning grooves, the two first springs are stretched, the two first sliding blocks and the two second sliding blocks can slide, so that the positions of the two supporting rods are adjusted, the four supporting rods respectively correspond to four corners of the incision, the two pulling blocks are loosened after movement is finished, the two positioning rods are inserted into the corresponding positioning grooves through the acting force of the two first springs to position the distraction mechanism, the screw rods are rotated through the rubber sleeve, the two sliding plates with opposite turning directions of internal threads, the two sliding plates move back to back, the first sliding blocks and the second sliding blocks are far away when the two sliding plates move back, the two sliding plates slide in the two extending cylinders, the incision is better in the opposite directions, the distraction effect is better, the strong effect is prevented, the distraction effect is better, the adaptation to the high adaptability of the incision during the incision expanding process, and the incision expanding effect is prevented, so that the expansion effect is stronger.

(2) According to the spine minimally invasive multifunctional distraction device, the distraction mechanism is placed on the two extension cylinders, the two sleeve plates are pulled according to the distance between the two extension cylinders, the extension plates slide in the sleeve plates, the two sleeve plates are placed on the two extension cylinders, the two clamping blocks are in contact with the two sides of the extension cylinders to enable the two clamping blocks to move back and forth, the third spring is extruded, the two clamping blocks clamp the extension cylinders through the acting force of the third spring, the support mechanism is installed, a pipeline of an endoscope is inserted into an incision through the through hole, the extension plates are used for supporting the pipeline, medical workers do not need to hold the pipeline, manpower is saved, and working pressure is reduced.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural view of a minimally invasive spinal multifunctional distraction device according to the present invention;

fig. 2 is a schematic front structural view of a minimally invasive spinal multifunctional distraction device provided by the invention;

FIG. 3 is a schematic structural view of a supporting mechanism of a minimally invasive spinal multifunctional distraction device according to the present invention;

FIG. 4 is a schematic structural view of a clamping mechanism of a minimally invasive spinal multifunctional distraction device according to the present invention;

FIG. 5 is a schematic structural view of a distraction mechanism of a minimally invasive spinal multi-functional distraction device according to the present invention;

fig. 6 is a schematic structural view of a positioning mechanism of a minimally invasive spinal multifunctional distraction device provided by the invention.

In the figure: 1. a first top block; 2. a guide groove; 3. a slide plate; 4. an adjustment mechanism; 41. a fixed block; 42. a screw; 43. a rubber sleeve; 44. a fixing rod; 5. a support mechanism; 51. sheathing the board; 52. an extension plate; 53. a slot; 54. a side block; 55. a side groove; 56. a through hole; 6. a positioning mechanism; 61. pulling the block; 62. a first spring; 63. positioning a rod; 7. a distraction mechanism; 71. a stay bar; 72. a first supporting plate; 73. a second supporting plate; 74. a telescopic rod; 75. a second spring; 8. a clamping mechanism; 81. a bottom block; 82. a limiting block; 83. a connecting rod; 84. a third spring; 85. a clamping block; 9. an installation mechanism; 91. a first bolt; 92. a guide bar; 93. mounting blocks; 94. a concave block; 10. an opening; 11. a first transverse plate; 12. a second slider; 13. a first slider; 14. positioning a groove; 15. an extension cylinder; 16. an extension rod; 17. a second bolt; 18. a support plate; 19. a second top block; 20. a second transverse plate; 21. connecting blocks; 22. a port; 23. and (6) inserting the board.

Detailed Description

The present invention will be further described with reference to the following detailed description so that the technical means, the creation features, the achievement purposes and the effects of the present invention can be easily understood.

As shown in fig. 1-6, the minimally invasive multifunctional distraction device for the spine comprises support plates 18, wherein the bottom ends of the two support plates 18 are respectively provided with an installation mechanism 9, the upper ends of the two support plates 18 are respectively provided with an insertion plate 23, the bottom ends of the two insertion plates 23 are respectively inserted into the opposite support plates 18, the outer sides of the two support plates 18 are respectively in threaded connection with a second bolt 17, and the upper ends of the two insertion plates 23 are respectively fixed with a first ejector block 1 and a second ejector block 19; two sliding plates 3 are arranged between a first ejector block 1 and a second ejector block 19, guide grooves 2 matched with the two sliding plates 3 are formed in the side wall of the first ejector block 1, one ends of the two sliding plates 3 are connected with the guide grooves 2 in a sliding mode, through holes 22 matched with the two sliding plates 3 are formed in the second ejector block 19, the other ends of the two sliding plates 3 penetrate through the second ejector block 19 through the through holes 22, and an adjusting mechanism 4 is arranged on the outer side of the second ejector block 19; the two sliding plates 3 are respectively provided with two openings 10, two connecting blocks 21 are respectively arranged on two sides of each opening 10, the two connecting blocks 21 are respectively fixed at the upper ends of the two sliding plates 3, the upper ends of the two sliding plates 3 are respectively provided with a first transverse plate 11 and a second transverse plate 20, and the first transverse plate 11 and the second transverse plate 20 are respectively fixedly connected with the two corresponding connecting blocks 21; the upper end of a first transverse plate 11 is provided with a plurality of positioning grooves 14, two first sliders 13 are movably sleeved on the first transverse plate 11, the upper ends of the two first sliders 13 are respectively provided with a positioning mechanism 6, the bottom ends of the two positioning mechanisms 6 are respectively inserted into the corresponding positioning grooves 14, one sides of the two first sliders 13 are respectively fixedly connected with an extension cylinder 15, two second transverse plates 20 are movably sleeved with two second sliders 12, one sides of the two second sliders 12 are respectively fixedly connected with extension rods 16, one ends of the two extension rods 16 are respectively inserted into the corresponding extension cylinders 15, the upper ends of the two extension cylinders 15 are provided with supporting mechanisms 5, two sides of the bottom ends of the supporting mechanisms 5 are respectively provided with clamping mechanisms 8, and the two clamping mechanisms 8 are respectively corresponding to the two extension cylinders 15; two first slider 13 bottoms and two second slider 12 bottoms all run through corresponding slide 3 through corresponding opening 10, two first slider 13 bottoms and two second slider 12 bottoms all are equipped with distraction mechanism 7, it is better to strut the effect, stability is stronger, prevent not hard up phenomenon from appearing in doctor operation process, thereby guarantee to the notched effect of strutting, can extrude second spring 75 strutting the in-process, play certain cushioning effect, prevent that the power from being too strong and cause the strain condition to the incision, can adapt to different incision sizes, adaptability is stronger.

Specifically, adjustment mechanism 4 includes two fixed blocks 41, screw rod 42, gum cover 43 and dead lever 44, two fixed block 41 fixed connection are in the 19 outsides of second kicking blocks, it is connected with screw rod 42 to rotate between two fixed blocks 41, screw rod 42 and two 3 one end threaded connection of slide, screw rod 42 central point puts the fixed gum cover 43 that has cup jointed, dead lever 44 fixed connection is in opening 22, dead lever 44 cup joints with two 3 activities of slide, rotate screw rod 42 through gum cover 43, because two 3 internal threads of slide turn to oppositely, therefore screw rod 42 takes two 3 back of the body removals of slide, two make first slider 13 keep away from with second slider 12 during 3 back of the body removals of slide, thereby make corresponding vaulting pole 71 keep away from, play the effect of strutting.

Specifically, the supporting mechanism 5 includes two sleeve plates 51, an extension plate 52, two slots 53, four side blocks 54, four side grooves 55 and a through hole 56, the extension plate 52 is located between the two sleeve plates 51, two opposite sides of the sleeve plates 51 are provided with the slots 53, two ends of the extension plate 52 are respectively inserted into the two slots 53, the extension plate 52 is matched with the two slots 53, two side blocks 54 are fixedly connected to outer sides of two ends of the extension plate 52, the side grooves 55 are arranged on two side walls of the two slots 53, the four side blocks 54 are respectively connected with the four side grooves 55 in a sliding manner, the four side blocks 54 are matched with the corresponding side grooves 55, the through hole 56 is arranged at the center of the extension plate 52, the pipeline of the endoscope is inserted into the notch through the through hole 56, the extension plate 52 is used for supporting the pipeline, the pipeline is not required to be held by hands by medical personnel, manpower is saved, and working pressure is reduced.

Specifically, two fixture 8 all include two bottom blocks 81, two stopper 82, a plurality of connecting rods 83, a plurality of third springs 84 and two grip blocks 85, two equal fixed connection of bottom block 81 are in the lagging 51 bottom, two bottom block 81 opposite sides all are equipped with grip block 85, two grip blocks 85 and corresponding extend a 15 both sides in close contact with, two equal fixedly connected with a plurality of connecting rods 83 of the back side of grip block 85, a plurality of connecting rods 83 cup joint with two bottom block 81 activity respectively, the one end and two stopper 82 fixed connection of grip block 85 are kept away from to a plurality of connecting rods 83, two grip blocks 85 and corresponding equal fixedly connected with a plurality of third springs 84 between the bottom block 81, a plurality of third springs 84 overlap respectively and establish in a plurality of connecting rods 83 periphery, two grip blocks 85 and the 15 both sides contact of extending a section of thick bamboo make two grip blocks 85 move in opposite directions, and extrude third spring 84, two grip blocks 85 carry out the centre gripping to extending a section of thick bamboo 15 through third spring's 84 effort, thereby accomplish the installation to supporting mechanism 5, installation and dismantlement are very convenient, and convenient to use.

Specifically, the two mounting mechanisms 9 each include a first bolt 91, a guide rod 92, a mounting block 93 and a concave block 94, the mounting block 93 is fixedly connected to the bottom end of the support plate 18, the concave block 94 is arranged on one side of the mounting block 93, a first bolt 91 is arranged between the concave block 94 and the mounting block 93, the first bolt 91 is in threaded connection with the mounting block 93, the wall end of the first bolt 91 is rotatably connected with the concave block 94, the guide rod 92 is arranged at the bottom end of the first bolt 91, one end of the guide rod 92 is fixedly connected with the concave block 94, the guide rod 92 is movably sleeved with the mounting block 93, the two first bolts 91 are rotated, the two concave blocks 94 are pushed to move oppositely when the two first bolts 91 rotate, the two concave blocks 94 clamp two sides of the bed body, and therefore the whole device is mounted on the bed body.

Specifically, the two spreading mechanisms 7 each include two supporting rods 71, a first supporting plate 72, a second supporting plate 73, two telescopic rods 74 and two second springs 75, the two supporting rods 71 are fixed to the bottom ends of the two first sliders 13 respectively, one side of the bottom ends of the two supporting rods 71 are fixed to the first supporting plate 72 and the second supporting plate 73 respectively, one end of the second supporting plate 73 is inserted into the first supporting plate 72, the telescopic rods 74 and the second springs 75 are fixedly connected between the first supporting plate 72 and the second supporting plate 73 and corresponding to the supporting rods 71, the two second springs 75 are sleeved on the periphery of the two telescopic rods 74 respectively, the incision is spread by the two first supporting plates 72 and the two second supporting plates 73, the spreading effect is better, the stability is stronger, the loosening phenomenon in the doctor operation process is prevented, the spreading effect on the incision is ensured, the second springs 75 are squeezed in the spreading process, a certain buffering effect is achieved, and the situation that the incision is pulled due to an excessively strong force is prevented.

Specifically, two positioning mechanism 6 all are including drawing piece 61, draw piece 61, first spring 62 and locating lever 63, draw piece 61 to be located first slider 13 upper end, draw piece 61 bottom vertical fixation to have a locating lever 63, locating lever 63 cup joints with first slider 13 activity, locating lever 63 bottom is inserted and is established in corresponding constant head tank 14, locating lever 63 and constant head tank 14 looks adaptation, draw the first spring 62 of fixedly connected with between piece 61 and the first slider 13, first spring 62 cover is established at locating lever 63 peripherally, two locating levers 63 insert corresponding constant head tank 14 through two first spring 62's effort, thereby fix a position distraction mechanism 7, can slide 3 first slider 13 when locating lever 63 separates with constant head tank 14, be convenient for adjust.

Specifically, the two sliding plates 3 are oppositely rotated with the internal threads of the threaded connection of the screw rod 42, and the two sliding plates 3 are moved towards each other through the screw rod 42, so that the distance is adjusted.

When the device is used, the whole device is placed at the upper end of the bed body, the two support plates 18 are positioned at two sides of the bed body, the two first bolts 91 are rotated, the two first bolts 91 push the two concave blocks 94 to move oppositely when rotating, the two concave blocks 94 clamp two sides of the bed body, so that the whole device is installed on the bed body, the two second bolts 17 are rotated according to the actually required height, the two insert plates 23 slide up and down, the height of the opening mechanism 7 is adjusted, the opening mechanism 7 corresponds to the notch, the two second bolts 17 are screwed after the adjustment is finished, then, the two pull blocks 61 are pulled upwards according to the actually required notch size, the two pull blocks 61 drive the two positioning rods 63 to move upwards, the two positioning rods 63 are separated from the two positioning grooves 14, the two first springs 62 are stretched, the two first slide blocks 13 and the two second blocks 12, so as to adjust the positions of the two support rods 71, the four supporting rods 71 respectively correspond to the four corners of the incision, the two pulling blocks 61 are loosened after the movement is finished, the two positioning rods 63 are inserted into the corresponding positioning grooves 14 through the acting forces of the two first springs 62 so as to position the opening mechanism 7, the screw rod 42 is rotated through the rubber sleeve 43, the two sliding plates 3 are driven by the screw rod 42 to move back and forth due to opposite turning directions of internal threads of the two sliding plates 3, the first sliding block 13 and the second sliding block 12 are separated when the two sliding plates 3 move back and forth, the two extending rods 16 slide in the two extending cylinders 15, the incision is opened through the two first supporting plates 72 and the two second supporting plates 73, the opening effect is better, the stability is stronger, the loosening phenomenon in the operation process of a doctor is prevented, the opening effect of the incision is ensured, the second spring 75 can be extruded in the opening process, and a certain buffering effect is achieved, prevent the power degree too strong and cause the strain condition to the incision, can adapt to different incision sizes, adaptability is stronger, when needs insert the endoscope into the incision, will strut mechanism 7 and place on two extension section of thick bamboo 15, interval between two extension section of thick bamboo 15 according to two, stimulate two lagging 51, extension plate 52 slides in lagging 51, place two lagging 51 again on two extension section of thick bamboo 15, two grip blocks 85 make two grip blocks 85 move back to back with the contact of extension section of thick bamboo 15 both sides, and extrude third spring 84, two grip blocks 85 carry out the centre gripping through the effort of third spring 84 to extension section of thick bamboo 15, thereby accomplish the installation to supporting mechanism 5, insert the pipeline of endoscope in the incision through-hole 56, utilize extension plate 52 to support the pipeline, do not need medical personnel to hand the pipeline, manpower is saved, work pressure is lightened.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are intended to be within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (8)

1. A spine minimally invasive multifunctional distraction device comprises a support plate (18), and is characterized in that: the bottom ends of the two supporting plates (18) are respectively provided with an installing mechanism (9), the upper ends of the two supporting plates (18) are respectively provided with an inserting plate (23), the bottom ends of the two inserting plates (23) are respectively inserted into the opposite supporting plates (18), the outer sides of the two supporting plates (18) are respectively in threaded connection with a second bolt (17), and the upper ends of the two inserting plates (23) are respectively fixed with a first ejecting block (1) and a second ejecting block (19); two sliding plates (3) are arranged between the first ejector block (1) and the second ejector block (19), guide grooves (2) matched with the two sliding plates (3) are formed in the side wall of the first ejector block (1), one ends of the two sliding plates (3) are connected with the guide grooves (2) in a sliding mode, through holes (22) matched with the two sliding plates (3) are formed in the second ejector block (19), the other ends of the two sliding plates (3) penetrate through the second ejector block (19) through the through holes (22), and an adjusting mechanism (4) is arranged on the outer side of the second ejector block (19); two openings (10) are formed in each of the two sliding plates (3), two connecting blocks (21) are arranged on two sides of each of the two openings (10), the two connecting blocks (21) are respectively fixed at the upper ends of the two sliding plates (3), a first transverse plate (11) and a second transverse plate (20) are respectively arranged at the upper ends of the two sliding plates (3), and the first transverse plate (11) and the second transverse plate (20) are respectively fixedly connected with the corresponding two connecting blocks (21); the upper end of the first transverse plate (11) is provided with a plurality of positioning grooves (14), the first transverse plate (11) is movably sleeved with two first sliding blocks (13), the upper ends of the two first sliding blocks (13) are respectively provided with a positioning mechanism (6), the bottom ends of the two positioning mechanisms (6) are respectively inserted into the corresponding positioning grooves (14), one sides of the two first sliding blocks (13) are respectively and fixedly connected with an extension cylinder (15), the second transverse plate (20) is movably sleeved with two second sliding blocks (12), one sides of the two second sliding blocks (12) are respectively and fixedly connected with extension rods (16), one ends of the two extension rods (16) are respectively inserted into the corresponding extension cylinders (15), the upper ends of the two extension cylinders (15) are provided with supporting mechanisms (5), the two sides of the bottom end of each supporting mechanism (5) are respectively provided with clamping mechanisms (8), and the two clamping mechanisms (8) are respectively corresponding to the two extension cylinders (15); two first slider (13) bottom and two second slider (12) bottoms all run through corresponding slide (3) through corresponding opening (10), two first slider (13) bottom and two second slider (12) bottoms all are equipped with struts mechanism (7).

2. The minimally invasive multifunctional distraction device of the spine of claim 1, wherein: adjustment mechanism (4) include two fixed block (41), screw rod (42), gum cover (43) and dead lever (44), two fixed block (41) fixed connection is in second kicking block (19) outside, two it is connected with screw rod (42) to rotate between fixed block (41), screw rod (42) and two slide (3) one end threaded connection, screw rod (42) central point puts fixed gum cover (43) of having cup jointed, dead lever (44) fixed connection is in opening (22), dead lever (44) and two slide (3) activity cup joint.

3. The minimally invasive multifunctional distraction device of the spine of claim 1, wherein: supporting mechanism (5) include two lagging (51), extension board (52), two slots (53), four side pieces (54), four side grooves (55) and through-hole (56), extension board (52) are located between two lagging (51), two lagging (51) opposite side all is equipped with slot (53), extension board (52) both ends are inserted respectively and are established in two slots (53), extension board (52) and two slot (53) looks adaptation, two equal fixedly connected with side pieces (54) in the extension board (52) both ends outside all are equipped with side groove (55) on slot (53) both sides wall, four side piece (54) respectively with four side groove (55) sliding connection, four side piece (54) all with correspond side groove (55) looks adaptation, extension board (52) central point puts and is equipped with through-hole (56).

4. The minimally invasive multifunctional distraction device of the spine of claim 1, wherein: two fixture (8) all includes two bottom pieces (81), two stopper (82), a plurality of connecting rod (83), a plurality of third spring (84) and two grip block (85), two equal fixed connection in lagging (51) bottom of bottom piece (81), two bottom piece (81) opposite side all is equipped with grip block (85), two grip block (85) and corresponding extension section of thick bamboo (15) both sides in close contact with, two equal fixedly connected with a plurality of connecting rod (83) in grip block (85) dorsal part, a plurality of connecting rod (83) cup joints with two bottom piece (81) activity respectively, a plurality of the one end and two stopper (82) fixed connection of grip block (85), two are kept away from in connecting rod (83) grip block (85) and correspond between bottom piece (81) a plurality of third spring (84), a plurality of equal fixedly connected with a plurality of third spring (84), a plurality of third spring (84) are established respectively and are established in a plurality of connecting rod (83) periphery.

5. The minimally invasive multifunctional distraction device of the spine of claim 1, wherein: two installation mechanism (9) all includes first bolt (91), guide arm (92), installation piece (93) and concave piece (94), installation piece (93) fixed connection is in backup pad (18) bottom, and installation piece (93) one side is equipped with concave piece (94), be equipped with first bolt (91) between concave piece (94) and installation piece (93), first bolt (91) and installation piece (93) threaded connection, first bolt (91) pole wall end is rotated with concave piece (94) and is connected, first bolt (91) bottom is equipped with guide arm (92), guide arm (92) one end and concave piece (94) fixed connection, guide arm (92) and installation piece (93) activity cup joint.

6. The minimally invasive multifunctional distraction device of the spine of claim 1, wherein: the two opening mechanisms (7) respectively comprise two supporting rods (71), a first supporting plate (72), a second supporting plate (73), two telescopic rods (74) and two second springs (75), the two supporting rods (71) are respectively fixed at the bottom ends of the two first sliding blocks (13), one side of the bottom end of each of the two supporting rods (71) is respectively fixed with the first supporting plate (72) and the second supporting plate (73), one end of the second supporting plate (73) is inserted into the first supporting plate (72), the telescopic rods (74) and the second springs (75) are respectively and fixedly connected between the first supporting plate (72) and the corresponding supporting rods (71) and between the second supporting plate (73) and the corresponding supporting rods (71), and the two second springs (75) are respectively sleeved on the peripheries of the two telescopic rods (74).

7. The minimally invasive multifunctional distraction device of the spine of claim 1, wherein: two positioning mechanism (6) all include and draw piece (61), first spring (62) and locating lever (63), draw piece (61) to be located first slider (13) upper end, draw piece (61) bottom vertical fixation to have locating lever (63), locating lever (63) and first slider (13) activity cup joint, locating lever (63) bottom is inserted and is established in corresponding constant head tank (14), locating lever (63) and constant head tank (14) looks adaptation, draw fixedly connected with first spring (62) between piece (61) and first slider (13), first spring (62) cover is established in locating lever (63) periphery.

8. The minimally invasive multifunctional distraction device of the spine of claim 1, wherein: the two sliding plates (3) are in opposite rotation directions with the internal threads in threaded connection with the screw rod (42).

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