CN113662790B - Lumbar vertebra posterior surgery distraction device convenient to installation location - Google Patents

Abstract

The utility model provides a lumbar vertebrae way of escape operation distraction device convenient to installation location, including the operation table, the top of operation table has the arc pole that two levels were placed, every arc pole is installed on the operation table through a set of regulation locking means, the first guide rail of bottom surface installation of arc pole, the lower part of first guide rail has the first slider that has the locking function, first slider lower extreme installation retractor, there are two sets of location distraction devices between two arc poles, the location distraction device can remove the distance of adjusting between two arc poles along arc pole length direction. The invention adopts a mode of matching the retractor with the vertebral segments of the patient to slowly strut the two adjacent vertebral segments, thereby achieving the effect of stretching the vertebral segments, and simultaneously, through the matching of the two groups of positioning stretching devices and the adjusting locking devices, the two vertebral segments are stretched and fixed in the whole operation process, thereby not only ensuring the stability of stretching the vertebral segments, but also being capable of stretching more accurately without manual fixation.

Description

Lumbar vertebra posterior surgery distraction device convenient to installation location

Technical Field

The invention belongs to the field of lumbar vertebra operation equipment, and particularly relates to a lumbar vertebra posterior operation distraction device convenient to install and position.

Background

Along with present living standard's improvement, lumbar vertebrae disease becomes a more common disease at present, and lumbar vertebrae way of escape interbody fusion cage fuses the art, it fuses the operation to be orthopedic backbone, need adopt lumbar vertebrae way of escape retractor to strut adjacent two lumbar vertebrae sections during the operation, just can operate, but most medical personnel's manual work struts the operation among the prior art, not only stability is not high, and strut the range and do not hold well, the operation difficulty, present lumbar vertebrae bending deformation's the condition is more simultaneously, the lumbar vertebrae way of escape distraction device that can be directed against the section skew has seldom, consequently, make the degree of difficulty that the lumbar vertebrae way of escape struts the operation bigger, whole operation process traditional chinese medical science protects personnel's work load bigger.

Disclosure of Invention

The invention provides a lumbar vertebra posterior surgery distraction device convenient to install and position, which is used for solving the defects in the prior art.

The invention is realized by the following technical scheme:

the utility model provides a lumbar vertebrae way of escape operation distraction device convenient to installation location, including the operation table, the top of operation table is equipped with the relative arc pole of concave surface that two levels were placed, every arc pole is installed on the operation table through a set of regulation locking means respectively, adjust the height that locking means can adjust the arc pole, and can make the arc pole carry out fore-and-aft direction's removal along the operation table and can lock the arc pole simultaneously, the equal fixed mounting in bottom surface of arc pole is along its length direction's first guide rail, the lower part of first guide rail all is equipped with the first slider that has the locking function with it sliding fit, the equal fixed mounting retractor of first slider lower extreme, be equipped with two sets of location distraction device between two arc poles, two sets of location device are located two arc pole middle part both sides respectively, the location distraction device can remove the distance of adjusting between two arc poles along arc pole length direction, and can lock and make the distance between two arc poles keep unchangeable.

The lumbar vertebra posterior surgery distraction device convenient to install and position comprises a second guide rail, a second slide block, a spherical groove, a sphere, a first through groove, a second through groove, a first through hole, a second through hole, a rack, a gear, a hollow flexible shaft, a third through hole, a connecting pipe, a piston, a thin flexible shaft, a second cavity, a locking structure, an air bag, a fourth through hole, a fifth through hole and a first telescopic rod, wherein the concave surface of the arc-shaped rod is fixedly provided with the second guide rail along the length direction, the outer side of the second guide rail is provided with the second slide block in sliding fit with the second guide rail, the outer side of the second slide block is provided with the spherical groove, the spherical groove is internally provided with the sphere in rolling fit with the spherical groove, the inner part of the arc-shaped rod is provided with the rectangular first cavity along the length direction, and one side of the concave surface and one side of the convex surface of the arc-shaped rod is provided with the first through groove along the length direction, the second guide rails are respectively provided with second through grooves communicated with the corresponding first through grooves, the second sliding blocks are respectively provided with first through holes communicated with the corresponding second through grooves, the spheres are respectively provided with second through holes penetrating through the spheres and communicated with the corresponding first through holes, racks along the length direction of the first through holes are fixedly arranged on the inner bottom surfaces of the first cavities, gears corresponding to the second sliding blocks one by one are arranged in the first cavities, hollow flexible shafts are fixedly arranged among the spheres and sequentially penetrate through the corresponding first through holes, the second through grooves and the first through grooves, third through holes coaxial with the gears are fixedly arranged in the middle parts of the gears, connecting pipes are fixedly arranged on one sides of the spheres far away from the second sliding blocks, one ends of the connecting pipes far away from the spheres are sealed, pistons in sealed contact and matched with the connecting pipes are arranged in the connecting pipes, second springs are fixedly arranged between the pistons and the inner side walls of the corresponding connecting pipes, and thin flexible shafts are arranged in the hollow flexible shafts, the one end of thin flexible axle runs through the second through-hole and inserts the one end of even intraductal fixed connection piston, the other end of thin flexible axle all runs through corresponding third through-hole in proper order, first groove back fixed mounting locking structure that passes through, the locking structure can carry out the locking with the gear, the both sides of even pipe are equipped with the second cavity respectively, all be equipped with the fourth through-hole between second cavity and the even pipe, the fourth through-hole is located the piston all the time and keeps away from spheroidal one side, the both sides of even pipe are fixed mounting several respectively along its length direction's gasbag, through fifth through-hole intercommunication between the gasbag of second cavity and corresponding side, but the first telescopic link of rotation installation locking between the two even pipes that every group location adjusting device corresponds.

As above a lumbar vertebrae way of escape operation distraction device convenient to installation location, the equal fixed mounting sleeve in periphery of second slider, annular groove is all seted up to telescopic periphery, all rotate the suit sleeve pipe in the annular groove, the sheathed tube both ends respectively with the arc recess correspond between the side installation torsional spring, fixed mounting connects the rope between two sleeves that same arc pole corresponds, connect the rope and twine several circles in two sleeve pipe peripheries respectively, connect the pointer of the middle part fixed mounting L type of rope, first slider is electronic slider, the equal fixed mounting box body in the relative one side of two first sliders, the equal opening in the relative one side of two boxes, the equal fixed mounting distance sensor in one side that is close to the connecting rod in the box body, the lower extreme of pointer all inserts the box body that corresponds inside and be arranged in between two distance sensor, distance sensor equallys divide and do not is connected with the power, distance sensor equallys divide and do not be connected with control terminal.

As above a lumbar vertebrae way of escape operation distraction device convenient to installation location, the locking structure include the locking piece, the blind hole, the inserted bar, first spring, the bar recess, the equal fixed mounting locking piece of the other end of thin flexible axle, the locking piece is close to one side of arc pole and sets up the blind hole that the several is annular evenly distributed, the blind hole all is located the periphery of the thin flexible axle that corresponds, all be equipped with coaxial inserted bar with it in the blind hole, the first spring of fixed mounting between the inner wall of inserted bar and the blind hole that corresponds, two bar recesses along its length direction are seted up to convex surface one side of arc pole, the bar recess is located the upper and lower both sides in the first groove that passes through that corresponds respectively, the inserted bar can insert in the bar recess and peg graft cooperation with it.

As above a lumbar vertebrae way of escape operation distraction device convenient to installation location, regulation locking means include second telescopic link, third guide rail, third slider, the bottom surface both sides of arc pole respectively fixed mounting expansion end up have the second telescopic link of locking function, the top surface left and right sides of operation table is fixed mounting third guide rail respectively, the upper portion of third guide rail all is equipped with the third slider of two ability locks, the top surface of third slider respectively with the bottom surface fixed connection of second telescopic link.

The invention has the advantages that: the invention is suitable for lumbar surgery; when the medical staff is in an initial state, the two arc-shaped rods are both positioned at one end of the operating bed, after the patient lies on the operating bed, the two arc-shaped rods are adjusted to move to two adjacent vertebral joint positions which are required to be expanded by the patient through adjusting the locking devices, then the lower parts of the retractors corresponding to the two arc-shaped rods are in contact fit with the upper parts of the corresponding vertebral joints through adjusting the locking devices, the first sliding block is locked, the two groups of positioning and expanding devices are respectively positioned at two sides of the middle parts of the two arc-shaped rods, at the moment, the two groups of positioning and expanding devices are respectively positioned at two sides of the lumbar vertebral joints of the patient, the two groups of positioning and expanding devices are simultaneously operated, the distance between the two groups of positioning and expanding devices is gradually increased, the distance between the two arc-shaped rods is slowly increased through adjusting the distance between the two arc-shaped rods, so that the two retractors drive the corresponding two adjacent vertebral joints to be expanded, the positioning and expanding devices are firstly locked, the two arc-shaped rods are locked and fixed through adjusting the locking devices, and then, the medical staff can perform an operation between the two groups of positioning and expanding devices; the invention has reasonable design, skillfully adopts a mode of matching the retractor with vertebral segments of a patient, slowly struts two adjacent vertebral segments by a mode of simultaneously moving two groups of positioning and strutting devices respectively positioned at two sides of the lumbar vertebral segments to two sides of an arc-shaped rod through a mode of moving the retractor along with the arc-shaped rod, thereby achieving the effect of expanding the vertebral segments, and simultaneously adopts two groups of positioning and strutting devices to ensure that the vertebral segments needing to be expanded are positioned between the two groups of positioning and strutting devices, so that the space between the two groups of positioning and strutting devices provides basic positioning and operating space for subsequent operations, thereby being beneficial to the subsequent operations.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on the drawings without inventive labor.

FIG. 1 is a schematic structural view of the present invention; FIG. 2 is an enlarged view of a portion of FIG. 1I; FIG. 3 is an enlarged view of the view from FIG. 1A; FIG. 4 is an enlarged view of the cross-sectional view of FIG. 1 taken along line B-B; fig. 5 is an enlarged view of the view from fig. 1C.

Detailed Description

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

The utility model provides a lumbar vertebrae way of escape operation distraction device convenient to installation location, as shown in the figure, including operation table 1, operation table 1's top is equipped with the relative arc pole 2 of concave surface that two levels were placed, every arc pole 2 is installed on operation table 1 through a set of regulation locking means respectively, adjust locking means can adjust the height of arc pole 2, and can make arc pole 2 carry out the fore-and-aft direction's removal along operation table 1 and can lock arc pole 2 simultaneously, the equal fixed mounting in bottom surface of arc pole 2 is along its length direction's first guide rail 4, the lower part of first guide rail 4 all is equipped with the first slider 5 that leads out that has the locking function with it sliding fit, the equal fixed mounting ware 6 of first slider 5 lower extreme, be equipped with two sets of location distraction devices between two arc poles 2, two sets of location distraction devices are located two arc pole 2 middle part both sides respectively, the location distraction device can move along arc pole 2 length direction and adjust the distance between two arc poles 2, and can make the distance between two arc poles 2 keep unchangeable. The invention is suitable for lumbar surgery; when the medical staff is in an initial state, the two arc-shaped rods 2 are both positioned at one end of the operating bed 1, after the patient lies on the operating bed 1, the two arc-shaped rods 2 are adjusted to move to two adjacent vertebral joint positions which need to be expanded by the patient through adjusting the locking devices, then the lower parts of the retractors 6 corresponding to the two arc-shaped rods 2 are in contact fit with the upper parts of the corresponding vertebral joints through adjusting the locking devices, the first sliding blocks 5 are locked, the two groups of positioning and expanding devices are respectively positioned at two sides of the middle parts of the two arc-shaped rods 2, at the moment, the two groups of positioning and expanding devices are respectively positioned at two sides of the lumbar vertebral joints of the patient, the two groups of positioning and expanding devices are simultaneously operated, the distance between the two groups of positioning and expanding devices is gradually increased, the distance between the two arc-shaped rods 2 is adjusted to slowly increase the distance between the two arc-shaped rods 2, so that the two retractors 6 drive the two corresponding adjacent vertebral joints to expand, after the expansion of the vertebral joints is completed, the positioning and expanding devices are firstly locked, the two arc-shaped rods 2 are locked and fixed through the adjusting locking devices, and then the medical staff can perform an operation between the two groups of the positioning and expanding devices; the invention has reasonable design, skillfully adopts a mode of matching the retractor 6 with vertebral segments of a patient, slowly struts two adjacent vertebral segments by a mode of simultaneously moving two groups of positioning and expanding devices respectively positioned at two sides of the lumbar vertebral segments to two sides of the arc-shaped rod 2 so as to move the retractor 6 along with the arc-shaped rod 2, thereby achieving the effect of expanding the vertebral segments, and simultaneously adopts two groups of positioning and expanding devices so that the vertebral segments needing to be expanded are positioned between the two groups of positioning and expanding devices, thereby providing basic positioning and operating space for subsequent operations, being beneficial to subsequent operations, simultaneously expanding and fixing the two vertebral segments in the whole operation process by matching the two groups of positioning and expanding devices with the adjusting and locking devices, not only ensuring the stability of expanding the vertebral segments, but also being capable of expanding more accurately, being free of manual fixation and having better effect.

Specifically, as shown in fig. 2, the positioning and spreading device described in this embodiment includes a second guide rail 7, a second slider 8, a spherical groove 9, a sphere 10, a first through-groove 11, a second through-groove 12, a first through-hole 13, a second through-hole 14, a rack 15, a gear 16, a hollow flexible shaft 17, a third through-hole 18, a connecting tube 19, a piston 20, a thin flexible shaft 21, a second cavity 22, a locking structure, an air bag 24, a fourth through-hole 23, a fifth through-hole 25, and a first telescopic rod 26, wherein the concave surface of the arc-shaped rod 2 is fixedly installed with the second guide rail 7 along the length direction thereof, the outer side of the second guide rail 7 is provided with the second slider 8 in sliding fit therewith, the outer side of the second slider 8 is provided with the spherical groove 9, the spherical groove 9 is internally provided with the sphere 10 in rolling fit therewith, the arc-shaped rod 2 is internally provided with the rectangular first cavity 3 along the length direction thereof, the concave surface and the convex surface of the arc-shaped rod 2 are provided with the first through-groove 11 along the length direction thereof, the hollow through-groove 11, the second through-hole 14 is provided with the second slider 12, the hollow slider 13, the second through-hole 14, the second slider 13 is provided with the hollow through-hole 13, the second slider 13, the hollow through-hole 13, the hollow slider 13 is provided with the hollow through-hole 13, the second slider 13 is provided with the hollow through-hole, the hollow slider 13, the hollow slider 13 is provided with the hollow slider 13, all be equipped with in the connecting tube 19 with it sealing contact complex piston 20, fixed mounting second spring 42 between the inside wall of piston 20 and the connecting tube 19 that corresponds, all be equipped with thin flexible axle 21 in the cavity flexible axle 17, the one end of thin flexible axle 21 runs through second through-hole 14 and inserts the one end of connecting tube 19 internal fixation piston 20, the other end of thin flexible axle 21 all runs through corresponding third through-hole 18 in proper order, first through groove 11 back fixed mounting locking structure, locking structure can lock gear 16, the both sides of connecting tube 19 are equipped with second cavity 22 respectively, all be equipped with fourth through-hole 23 between second cavity 22 and the connecting tube 19, fourth through-hole 23 is located the one side that spheroid 10 was kept away from to piston 20 all the time, the both sides of connecting tube 19 are fixed mounting several respectively along its length direction's gasbag 24, communicate through fifth through hole 25 between second cavity 22 and the gasbag 24 of the side that corresponds, the first telescopic link 26 that can lock is installed in the rotation between the two connecting tube 19 that every group location adjusting device corresponds. In an initial state, the two positioning and spreading devices are symmetrically distributed along the left and right of the operating table 1, all the air bags 24 are in an inflated state, the locking structures respectively lock the corresponding gears 16, and the two arc-shaped rods 2 are fixed through the positioning and spreading devices; firstly, the first sliding block 5 is adjusted to move along the first guide rail 4 on the corresponding side, so that the corresponding retractors 6 are respectively positioned at the lumbar vertebral segments to be operated, then the locking device is adjusted to enable the arc-shaped rods 2 to move downwards, after the lower ends of the retractors 6 are matched with the upper parts of the corresponding vertebral segments, when two vertebral segments are required to be unfolded, medical personnel simultaneously operate from two sides of the operating bed 1 respectively to release the locking of the first telescopic rod 26, firstly, the air bags 24 are simultaneously pressed, the air in the air bags 24 sequentially passes through the corresponding fifth through holes 25, the second cavities 22 and the fourth through holes 23 to enter the connecting pipe 19, the air is flushed into the connecting pipe 19, so that the piston 20 in the connecting pipe 19 moves towards one side of the corresponding sphere 10, meanwhile, the second spring 42 is stretched, so that the thin flexible shaft 21 moves towards one side of the arc-shaped rods 2, because the thin flexible shaft 21 sequentially penetrates through the corresponding third through hole 18 and the first through groove 11 and then is fixedly provided with the locking structure, the locking structure is separated from the convex surface side of the corresponding arc-shaped rod 2, the locking structure releases the locking of the gear 16, the connecting pipe 19 is rotated towards one side far away from the middle part of the operating table 1 at the same time, because the connecting pipe 19 is fixedly connected with the corresponding sphere 10, the sphere 10 is in rolling connection with the corresponding spherical groove 9, the rotation of the connecting pipe 19 enables the sphere 10 to rotate along with the connecting pipe, the sphere 10 is connected with the corresponding gear 16 through the hollow flexible shaft 17, the rotation of the connecting pipe 19 drives the corresponding gear 16 to rotate along with the connecting pipe, the gear 16 moves along the corresponding rack 15, the second slide block 8 moves along the corresponding second guide rail 7, the transverse distance between the two groups of positioning and opening devices is larger, because the two second guide rails 7 are fixedly arranged on the concave surface sides of the two arc-shaped rods 2, the distance between the two retractors 6 is slowly increased, therefore, two adjacent vertebral segments of the lumbar vertebra are slowly unfolded through the retractor 6, when the two vertebral segments are unfolded to the distance required by the operation, medical workers simultaneously relieve the extrusion on the air bags 24 of the two groups of positioning unfolding devices, under the action of the second spring 42, the piston 20 moves towards one side of the first telescopic rod 26 along the corresponding connecting pipe 19, so that air in the connecting pipe 19 is pushed into the corresponding air bag 24, the locking structure is in contact with the outer side of the corresponding arc-shaped rod 2 and locks the corresponding gear 16, then the first telescopic rod 26 is locked, the two arc-shaped rods 2 are fixed through adjusting the locking device, at the moment, the two groups of unfolding positioning devices are respectively positioned at two sides of the lumbar vertebra segment required to be operated, and the medical workers can perform the operation between the two groups of positioning unfolding devices; make the second slider 8 that corresponds along second guide rail 7 removal through the mode of following the rotatory connecting tube 19 in operation table 1 both sides simultaneously, thereby make the distance between two retractors 6 increase along with the removal of second slider 8 gradually, thereby strut two adjacent vertebra sections, the rethread adjusts locking means and locks two arc poles 2 simultaneously, locking structure carries out the locking to gear 16, thereby it is fixed to carry out the locking with two vertebra sections after will strutting, and two sets of location distraction device are located lumbar vertebrae vertebra section both sides respectively, space between two sets of location distraction device can make things convenient for medical personnel to carry out subsequent operation.

Specifically, as shown in fig. 1, in this embodiment, the sleeve 27 is fixedly installed at the periphery of the second slider 8, the annular groove 28 is formed at the periphery of the sleeve 27, the sleeving sleeves 29 are rotatably installed in the annular groove 28, torsion springs are installed between the two ends of each sleeve 29 and the corresponding side of the corresponding arc groove 28, the connection rope 30 is fixedly installed between the two sleeves 29 corresponding to the same arc rod 2, the connection rope 30 is wound around the peripheries of the two sleeves 29 for several turns, the pointer 31 is fixedly installed at the middle of the connection rope 30 in an L shape, the first slider 5 is an electric slider, the box 32 is fixedly installed at the opposite side of the two first sliders 5, the opposite side of the two box 32 is open, the distance sensor 33 is fixedly installed at one side of the box 32 close to the connecting rod 19, the lower end of the pointer 31 is inserted into the corresponding box 32 and is located between the two distance sensors 33, the distance sensors 33 are connected to a power supply, and the distance sensors 33 are connected to a control terminal. In an initial state, the torsion springs at the two ends of the sleeve 29 are both in a tightened state, the connecting rope 30 is always in a tightened state, and the distances between the lower end of the pointer 31 and the distance sensors 33 on the two sides of the pointer are equal; when the lumbar of a patient undergoing an operation is bent, namely, the two adjacent vertebral segments are dislocated and not on the same straight line, before the operation, medical personnel respectively adjust one second sliding block 8 of two groups of positioning and expanding devices, and the two second sliding blocks 8 are respectively positioned on one sides of different arc-shaped rods 2, so that the second sliding blocks 8 corresponding to the two groups of positioning and expanding devices are not on the same horizontal line, meanwhile, the horizontal part of a connecting rope 30 is lengthened due to the movement of the second sliding block 8, the horizontal part of a pointer 31 is parallel to the vertebral segments below, the pointer 31 is close to a distance sensor 33 on one side due to the movement of the pointer 31, when the distance between the lower end of the pointer 31 and the distance sensor 33 on the other side is farther, the distance sensor 33 on the other side feeds information back to a terminal, and the terminal controls the first sliding block 5 to move along the corresponding second guide rail 4, the lower end of the pointer 31 is positioned between the two distance sensors 33, then the two arc-shaped rods 2 are lowered by adjusting the locking devices, so that the two retractors 6 respectively correspond to and contact with two adjacent vertebral segments, then medical personnel respectively hold and press the air bags 24 at two sides of the operating bed 1 at the same time, and then simultaneously rotate the connecting tube 19, so that the second sliding blocks 8 move along the corresponding second guide rails 7 in the direction far away from the middle of the operating bed 1, the distance between the two second sliding blocks 8 positioned at the same side is increased, so that the connecting ropes 30 are respectively released around the corresponding sleeves 29, namely the length of the connecting ropes 30 positioned horizontally is also increased, at the moment, the second sliding blocks 8 of the two spreading positioning devices are respectively parallel to the horizontal parts of the pointer 31 at the corresponding sides, and the retractors 6 can slowly spread the corresponding vertebral segments along the direction of the two adjacent vertebral segments; adopt the cooperation of connecting rope 30, pointer 31 and distance sensing 33, electronic first slider 5, thereby not only can make two sets of location distraction devices strut going on that is favorable to follow-up operation along the direction of two adjacent vertebra festival offsets through the skew instruction of pointer 31 as the vertebra festival of below, adopt distance sensor 33 and electronic first slider 5's cooperation simultaneously, can be more accurate fix a position the vertebra festival of below, ensure the accuracy of operation.

Further, as shown in fig. 4, the locking structure described in this embodiment includes locking block 34, blind hole 35, inserted bar 36, first spring 37, bar groove 38, the equal fixed mounting locking block 34 of the other end of flexible thin axle 21, the several blind hole 35 that is annular evenly distributed is seted up to one side that locking block 34 is close to curved pole 2, blind hole 35 all is located the periphery of the flexible thin axle 21 that corresponds, all be equipped with the inserted bar 36 coaxial with it in the blind hole 35, fixed mounting first spring 37 between the inner wall of inserted bar 36 and the blind hole 35 that corresponds, two bar grooves 38 along its length direction are seted up to convex surface one side of curved pole 2, bar grooves 38 are located the upper and lower both sides of the first through groove 11 that corresponds respectively, inserted bar 36 can insert in bar groove 38 and with it the cooperation of pegging graft. In the initial state, the locking block 34 is in contact fit with one side of the convex surface of the arc-shaped rod 2 on the corresponding side, and at the moment, two insertion rods 36 opposite to the strip-shaped grooves 38 are inserted into the corresponding strip-shaped grooves 38 under the action of the first springs 37, so that the gear 16 is locked; when using, because medical personnel hold pressure gasbag 24, make thin flexible axle 21 and the piston 20 that corresponds all move to the convex surface one side of arc pole 2, make corresponding locking piece 34 all separate with arc pole 2, inserted bar 36 all separates from bar recess 38, and the distance between 36 outer ends of inserted bar and the locking piece 34 is less than the distance that thin flexible axle 21 removed, thereby relieve the locking to gear 16, thereby can make second slider 8 remove, when needs carry out the locking with gear 16, gasbag 24 resumes the gas filled state, thin flexible axle 21 and the piston 20 that corresponds move to first telescopic link 26 one side, thereby pulling locking piece 34 is close to arc pole 2 convex surfaces, thereby make locking piece 34 resume initial condition, carry out the locking with gear 16.

Furthermore, as shown in fig. 5, the adjusting and locking device described in this embodiment includes a second telescopic rod 38, a third guide rail 39 and a third slider 40, the two sides of the bottom surface of the arc-shaped rod 2 are respectively fixedly installed with the second telescopic rod 38 with a locking function, the movable end of the second telescopic rod faces upwards, the left and right sides of the top surface of the operating bed 1 are respectively fixedly installed with the third guide rail 39, the upper portion of the third guide rail 39 is provided with two third sliders 40 capable of being locked, and the top surfaces of the third sliders 40 are respectively fixedly connected with the bottom surface of the second telescopic rod 38. When using, the locking can be removed along the third guide rail 39 that corresponds to third slider 40, medical personnel remove two arc poles 2 with first to the position of two sections adjacent vertebra sections that need perform the operation, then through adjusting second telescopic link 38, make retractor 6 respectively with the vertebra section upper portion contact cooperation that corresponds the side, then carry out the locking with second telescopic link 38, prop two sections vertebra sections when two sets of location strutting device struts the back, locking is all carried out with third slider 40, accomplished promptly and strutted fixed operation with two adjacent vertebra sections.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (3)

1. The utility model provides a lumbar vertebrae way of escape operation distraction device convenient to installation location which characterized in that: the multifunctional surgical bed comprises a surgical bed (1), two arc-shaped rods (2) which are horizontally placed and have opposite concave surfaces are arranged above the surgical bed (1), each arc-shaped rod (2) is arranged on the surgical bed (1) through a group of adjusting and locking devices respectively, the adjusting and locking devices can adjust the height of each arc-shaped rod (2), the arc-shaped rods (2) can be locked while moving in the front-back direction along the surgical bed (1), first guide rails (4) in the length direction of the arc-shaped rods (2) are fixedly arranged on the bottom surfaces of the arc-shaped rods (2), first sliding blocks (5) which are in sliding fit with the first guide rails (4) and have a locking function are arranged on the lower portions of the first guide rails (4), retractors (6) are fixedly arranged on the lower ends of the first sliding blocks (5), two groups of positioning and spreading devices are arranged between the two arc-shaped rods (2), the two groups of positioning spreading devices are respectively arranged on two sides of the middle portions of the two arc-shaped rods (2), the positioning spreading devices can move in the length direction of the arc-shaped rods (2) to adjust the distance between the two arc-shaped rods (2), and can be locked; the positioning and spreading device comprises a second guide rail (7), a second sliding block (8), a spherical groove (9), a sphere (10), a first through groove (11), a second through groove (12), a first through hole (13), a second through hole (14), a rack (15), a gear (16), a hollow flexible shaft (17), a third through hole (18), a connecting pipe (19), a piston (20), a thin flexible shaft (21), a second cavity (22), a locking structure, an air bag (24), a fourth through hole (23), a fifth through hole (25) and a first telescopic rod (26), wherein the concave surface of the arc rod (2) is fixedly provided with the second guide rail (7) along the length direction thereof, the outer side of the second guide rail (7) is provided with the second sliding block (8) in sliding fit with the second guide rail, the outer side of the second sliding block (8) is provided with the spherical groove (9), the spherical groove (9) is internally provided with the sphere (10) in rolling fit with the arc rod, the first cavity (3) along the length direction of the arc rod is provided with the rectangular guide rail (2), the convex surface of the second through groove (11) is provided with the second through groove (12), the convex surface of the arc rod (11) is provided with the second through groove (12), spheroid (10) all is seted up and is run through its spherical second through-hole (14), second through-hole (14) communicate with each other with corresponding first through-hole (13) respectively, equal fixed mounting of bottom surface is along rack (15) of its length direction in first cavity (3), all be equipped with gear (16) with second slider (8) one-to-one in first cavity (3), fixed mounting cavity flexible axle (17) between spheroid (10) and corresponding gear (16), cavity flexible axle (17) runs through corresponding first through-hole (13) in proper order, groove (12) are passed through to the second, first groove (11) pass through, equal fixed mounting in the middle part of gear (16) and coaxial third through-hole (18) with it, equal fixed mounting connecting tube (19) in one side that second slider (8) was kept away from to spheroid (10), the one end that spheroid (10) was kept away from to connecting tube (19) all seals, all be equipped with sealed contact complex piston (20) of cavity in connecting tube (19), the piston (20) and the corresponding connecting tube (19) fixed mounting connecting tube (19) between the inside wall fixed mounting second spring (21) one end, the thin connecting tube (21) that the other end all runs through the thin flexible axle (21) and the other end of the second through the thin flexible axle (18) and the thin connection of the thin flexible axle (21) that the piston (21) all corresponds in the second through, the piston (18) and the other end, the thin connection of the thin flexible axle (21) is equipped with the thin flexible axle (18) is connected in proper order, the thin flexible axle (18), the thin connection of the piston (18), the thin connection of the thin flexible axle (18) is connected, the rear of the first through groove (11) is fixedly provided with a locking structure, the locking structure can lock the gear (16), two sides of the connecting pipe (19) are respectively provided with a second cavity (22), a fourth through hole (23) is formed between the second cavity (22) and the connecting pipe (19), the fourth through hole (23) is always positioned on one side, far away from the sphere (10), of the piston (20), two sides of the connecting pipe (19) are respectively and fixedly provided with a plurality of air bags (24) along the length direction of the connecting pipe, the second cavity (22) is communicated with the air bags (24) on the corresponding side through a fifth through hole (25), and a lockable first telescopic rod (26) is rotatably arranged between the two connecting pipes (19) corresponding to each group of positioning and adjusting devices; the equal fixed mounting sleeve (27) in periphery of second slider (8), annular groove (28) are all seted up to the periphery of sleeve (27), all rotate suit sleeve pipe (29) in annular groove (28), the both ends of sleeve pipe (29) respectively with install the torsional spring between the side that corresponds of arc recess (28), fixed mounting connects rope (30) between two sleeve pipes (29) that same arc pole (2) correspond, connect rope (30) winding respectively at two sleeve pipes (29) periphery several circles, connect pointer (31) of the middle part fixed mounting L type of rope (30), first slider (5) are electronic slider, the equal fixed mounting box body (32) in two relative one sides of first slider (5), the equal opening in one side that two box body (32) are relative, the equal fixed mounting distance sensor (33) in one side that is close to connecting pipe (19) in box body (32), the lower extreme of pointer (31) all inserts corresponding box body (32) inside and is located between two distance sensor (33), distance sensor (33) are equallyd divide equally to be connected with the power respectively, distance sensor (33) divide equally to be connected with control respectively.

2. The lumbar posterior surgery distraction device of claim 1, wherein said distraction device comprises: locking structure include locking piece (34), blind hole (35), inserted bar (36), first spring (37), bar groove (38), the equal fixed mounting locking piece (34) of the other end of thin soft axle (21), one side that locking piece (34) are close to arc pole (2) is seted up the several and is annular evenly distributed's blind hole (35), blind hole (35) all are located the periphery of the thin soft axle (21) that corresponds, all be equipped with coaxial inserted bar (36) with it in blind hole (35), first spring of fixed mounting (37) between the inner wall of inserted bar (36) and the blind hole (35) that corresponds, two bar groove (38) along its length direction are seted up to convex surface one side of arc pole (2), bar groove (38) are located the upper and lower both sides of the first groove (11) that pass through that corresponds respectively, inserted bar (36) can insert in bar groove (38) and peg graft cooperation with it.

3. The lumbar posterior surgery distraction device of claim 1, wherein said distraction device comprises: adjust locking means include second telescopic link, third guide rail (39), third slider (40), the bottom surface both sides of arc pole (2) are the second telescopic link that fixed mounting expansion end has the locking function up respectively, the top surface left and right sides of operation table (1) is fixed mounting third guide rail (39) respectively, the upper portion of third guide rail (39) all is equipped with three slider (40) of two ability locks, the top surface of third slider (40) respectively with the bottom surface fixed connection of second telescopic link.

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