CN203303130U

CN203303130U - Operation reset platform

Info

Publication number: CN203303130U
Application number: CN2013202802281U
Authority: CN
Inventors: 严飞
Original assignee: Suzhou And Science & Technology Development Co Ltd
Current assignee: Suzhou And Science & Technology Development Co Ltd
Priority date: 2013-05-22
Filing date: 2013-05-22
Publication date: 2013-11-27
Anticipated expiration: 2023-05-22

Abstract

The utility model discloses an operation reset platform which is used for carrying out transverse and radial reset traction on a broken bone. The operation reset platform comprises an object-placing platform and a base, the object-placing platform is connected to the upper portion of the base through four first supporting rods, the four first supporting rods and the object-placing platform are connected through meshed surface screw pairs, the four supporting rods and the base are connected through meshed surface screw pairs, the two sides of the front end of the base are respectively provided with one second supporting rod, the two second supporting rods are connected with supporting rods with holes respectively, a pull rod is connected with the upper ends of the two supporting rods with the holes, a traction mechanism is arranged between the two supporting rods with the holes, and an up-and-down reset mechanism is arranged on the base below the object-placing platform; by means of the structure, the operation reset platform can carry out transverse and radial traction resetting on the broken bone, is convenient to operate and high in working efficiency, and can greatly reduce the trauma area of a patient when an external fixing support is used; in addition, when the operation reset platform is used in cooperation with X rays, radiation to an operator by the X rays can be greatly reduced.

Description

The operative reduction platform

Technical field

This utility model relates to the orthopedic medical device field, relate in particular to a kind of for the breaking part skeleton to extremity do laterally and radially reset the traction the operative reduction platform.

Background technology

In the operation of orthopaedics class, when sufferer breaking part skeleton is carried out to operative treatment, need to carry out laterally and radially resetting traction to the breaking part skeleton, current operative reduction platform comprises object disposing platform and base, object disposing platform is connected on base by four support bars, four support bars and object disposing platform, between base, usually adopt the type of attachment of meshing screw pair, structure such as Fig. 1 of meshing the secondary type of attachment of screw, Fig. 2, shown in Figure 3, comprise bolt 1, on bolt 1, be set with successively without screw thread lock-teeth block 2, spring 3, threaded lock-teeth block 4 screws the outer end at bolt 1, spring 3 is positioned at without screw thread lock-teeth block 2 and threaded lock-teeth block 4 both adjacent grooves, the elastic force of spring 3 makes without screw thread lock-teeth block 2 and the separative trend of threaded lock-teeth block 4 both tools, on without screw thread lock-teeth block 2 and threaded lock-teeth block 4 both contacted end faces, be respectively arranged with the intermeshing groove of energy, during use, threaded lock-teeth block 4 can be fixed in connector, without screw thread lock-teeth block 2, be fixed in connected piece, screw bolt 1, threaded lock-teeth block 4 and the meshing face without screw thread lock-teeth block 2 are tightly meshed together, now, connector can not rotate relative to fixing mutually with connected piece, unclamp bolt 1, the active force of spring 3 makes threaded lock-teeth block 4 and separates without meshing of screw thread lock-teeth block 2, and now, connector and connected piece can relatively rotate, mutually noninterfere, object disposing platform is for the injured limbs of patient, the operative reduction platform of said structure itself does not have the function of the traction that laterally and radially resets, when operation, the limbs that the patient is injured are placed on object disposing platform, at first need the people to pull the breaking part skeleton to do radial motion, under the effect of artificial radially pull strength, the doctor selects to adopt exterior fixation bracket or internal fixation plate to fix the breaking part skeleton according to conditions of patients, in whole operation, artificial radially pull strength need to maintain the position after pulling always, until operation finishes.

The employing exterior fixation bracket fixedly method of breaking part skeleton is: under the effect of artificial radially pull strength, in bone fracture dislocation place, implant according to actual needs the fine steel needle of some, with the folder pin piece on exterior fixation bracket, pin fine steel needle, the prelum two ends are against on corresponding folder pin piece, by prelum, drive the breaking part skeleton and do radial motion, when bone fracture when neat, tighten the folder pin piece on exterior fixation bracket, make its locking motionless, make exterior fixation bracket by skeletal fixation the position before fracture.

The method that adopts internal fixation plate to fix the breaking part skeleton is: under the effect of artificial radially pull strength, with scalpel, cut the outside skin histology of breaking part skeleton, the size of otch is consistent with internal fixation plate length, on the breaking part skeleton, implant according to actual needs the Kirschner wire of some, Kirschner wire runs through skeleton, by by multiple resetting tool, drawing Kirschner wire, bone fracture is faced together, then internal fixation plate is close on the breaking part skeleton, use hold-down screw that internal fixation plate is fixed on skeleton, guarantee that it is not loosening.

The operative reduction platform of said structure, in operation process, need the people to pull skeleton to carry out radial motion, and need to maintain the position after pulling always, until operation finishes, labor intensive so not only, and, because always there is unstability in manually-operated, brought inconvenience and unsafe factor for doctor's operation technique, in addition, in operation process, need to be combined with X ray and observe trailed skeleton, the operator can be subject to certain radiation effect; When adopting exterior fixation bracket fixedly during the breaking part skeleton, by the effect of prelum, only realize that skeleton radially resets, when the skeleton transversion malposition is serious, only passes through exterior fixation bracket and by force skeleton alignd and fix, sometimes can't produce a desired effect; When the bone fracture place condition of the injury is lighter, while adopting the exterior fixation bracket fix bone, because the otch of body surface is larger, tend to cause the breaking part skeleton to grow and healed, and operative incision is also in the growth healing; When adopting internal fixation plate to fix the breaking part skeleton, need to adopt multiple aid, could, by the alignment of breaking part skeleton, bring many inconvenience, trivial operations to the doctor.

The utility model content

The technical problem of the required solution of this utility model is: provide a kind of traction of carrying out laterally and radially resetting, simple to operate, reliable operative reduction platform resets.

For addressing the above problem, the technical solution adopted in the utility model is: described operative reduction platform, comprise object disposing platform and base, object disposing platform is connected to the base top by four the first support bars, four the first support bars and object disposing platform, between base, adopt the type of attachment of meshing screw pair, both sides away from the base front end of object disposing platform respectively are equipped with second support bar, two the second support bars are connected with support bar with holes respectively, pull bar is connected with the upper end of two support bars with holes, pull bar, two support bars with holes and two the second support bars form a support frame, the second support bar and base, and with support bar with holes between be connected the type of attachment that adopts respectively meshing screw pair, between two support bars with holes, haulage gear is installed, on the base of object disposing platform below, upper and lower resetting-mechanism is installed, the structure of haulage gear is: on main body, offer through hole and lower tapped through hole on first, and on first, through hole is mutually vertical with lower tapped through hole, on the top of main body, offer the screwed hole communicated with upper through hole, in screwed hole, be provided with the fixedly bolt of use, half-round bar passes through hole on first, bolt can be locked in half-round bar in main body, two ends at half-round bar are connected with respectively a sheath by pin and pin hole, two sheaths are connected in half-round bar between two support bars with holes by the type of attachment of meshing screw pair respectively, screw rod and lower tapped through hole form screw pair, screw rod is installed with the drag hook bumping post near the end of object disposing platform, screw rod is connected with the first drag hook by the drag hook bumping post, and the first drag hook can circumferentially rotate relative to the drag hook bumping post, the afterbody of screw rod passes through contiguous block, the handle bumping post is connected with first handle, the structure of upper and lower resetting-mechanism is: slide block is movably arranged on base, the mobile jib lower end that resets is provided with slide block, in the slide block outside, offer tapped through hole, in tapped through hole, be provided with can be by slider locking the 5th bolt on base, crossbar end and the first fixed block surround on the mobile jib that resets and the 6th bolt crossbar end and the first fixed block are fixedly connected on the mobile jib that resets, Wicresoft's positor is connected on the cross bar slide block, and the cross bar slide block is movably arranged on cross bar and the cross bar slide block can move axially along cross bar.

Further, aforesaid operative reduction platform, wherein, the structure of Wicresoft's positor is: comprise the fixed block be arranged on the cross bar slide block, in fixed block, laterally offer the upper through hole and the lower through-hole that are parallel to each other, the fixed block top offers the first screwed hole, the first screwed hole communicates with upper through hole, fixedly the first bolt of use is housed in the first screwed hole, the bar handle of drag hook passes through hole and stretches out, the cross sectional shape of the bar handle of drag hook is the semicircle step shape, the first bolt can be locked mutually with the upper plane of the semicircle step bars handle of drag hook, thereby drag hook is fixed in fixed block, handle is fixed on the tail end of drag hook bar handle, adjusting screw(rod) passes lower through-hole and stretches out, and is positioned on the outer adjusting screw(rod) of fixed block and is rotary with respectively left nut and right nut, and left and right nut can be axially fixed in adjusting screw(rod) in fixed block, and parietal bone backshank end is connected with the adjusting screw(rod) end by adapter sleeve.

Further, aforesaid operative reduction platform, wherein, be provided with anti-skidding groove on the end face of the parietal bone needle section in Wicresoft's positor.

Further, aforesaid operative reduction platform, wherein, handle end offers the semicircle stepped hole matched with the bar handle of drag hook, semicircle stepped hole upper end offers the second screwed hole, and the second screwed hole communicates with the semicircle stepped hole, and handle is installed on the bar handle tail end of drag hook by the semicircle stepped hole, fixedly the second bolt of use is housed in the second screwed hole, and the second bolt can be fixedly connected on handle on the bar handle of drag hook.

Further, aforesaid operative reduction platform, wherein, between drag hook and parietal bone pin, be provided with bow type block, drag hook is positioned at the bow type block upper groove, the parietal bone pin is positioned at the bow type block low groove, at the upper groove top, be provided with the 3rd screwed hole, in the low groove bottom, be provided with the 4th screwed hole, in the 3rd screwed hole, be provided with the 3rd bolt that fixing drag hook is used, in the 4th screwed hole, be provided with the 4th bolt that fixing parietal bone pin is used, the 3rd bolt and the 4th bolt are fixed on the upper of bow type block by drag hook and parietal bone pin respectively, in low groove, make drag hook and the parietal bone pin phenomenon that mutually can not be shifted.

The beneficial effects of the utility model are: on the operative reduction platform, be provided with upper and lower resetting-mechanism and haulage gear, can carry out laterally and radially resetting traction to the breaking part skeleton, for the doctor operation condition of providing convenience, more convenient to operate, shorten operating time, improved work efficiency; In addition, adopt the traction that laterally resets of Wicresoft's positor, when selecting to use exterior fixation bracket to fix the breaking part skeleton, need on the skin histology of the outside of injured limb, cut a little openning, greatly reduce patient's wound area, also greatly reduced patient's misery.

The accompanying drawing explanation

Fig. 1 is the structural representation of meshing screw pair described in background technology.

Fig. 2 is without the structural representation of screw thread lock-teeth block in Fig. 1.

Fig. 3 is the structural representation of threaded lock-teeth block in Fig. 1.

Fig. 4 is the overall structure schematic diagram that operative reduction platform described in the utility model launches.

Fig. 5 is the folding structural representation of operative reduction platform in Fig. 4.

Fig. 6 is the structural representation of haulage gear in Fig. 4.

Fig. 7 is the structural representation of the partial cutaway of F part in Fig. 5.

Fig. 8 is the structural representation of E-E section in Fig. 1.

Fig. 9 is the structural representation of upper and lower resetting-mechanism in Fig. 4.

Figure 10 is the overall structure schematic diagram of Wicresoft's positor.

Figure 11 is the structural representation shown in the C direction in Fig. 9.

Figure 12 is the structural representation of A-A section in Figure 10.

Figure 13 is parietal bone needle section structural representation.

Figure 14 is the structural representation of handle.

Figure 15 is the structural representation of B-B section in Figure 13.

The specific embodiment

Below in conjunction with accompanying drawing and preferred embodiment, technical scheme described in the utility model is described in further detail.

As Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, shown in Figure 9, operative reduction platform described in the utility model, comprise object disposing platform 5 and base 7, object disposing platform 5 is connected to the top of base 7 by four the first support bars 6, four first support bars 6 and object disposing platform 5, between base 7, adopt the type of attachment of meshing screw pair, be convenient to adjust and lock the position of object disposing platform 5, both sides away from base 7 front ends of object disposing platform 5 respectively are equipped with second support bar 8, two the second support bars 8 are connected with support bar 9 with holes respectively, pull bar 10 is connected with the upper end of two support bars 9 with holes, pull bar 10, two support bars 9 with holes and two the second support bars 8 form a support frame, the second support bar 8 and base 7, and with support bar 9 with holes between be connected the type of attachment that adopts respectively meshing screw pair, on two support bars 9 with holes, haulage gear is installed, on the base 7 of object disposing platform 5 belows, upper and lower resetting-mechanism is installed, the structure of haulage gear is: on main body 11, offer through hole and lower tapped through hole on first, and on first, through hole is mutually vertical with lower tapped through hole, on main body 11 tops, offer two screwed holes that are parallel to each other, and two screwed holes communicate with through hole on first respectively, the fixedly bolt 18 of use is housed in screwed hole, half-round bar 12 passes through hole on first, bolt 18 can be locked in half-round bar 12 in main body 11, in actual use, can unclamp bolt 18, main body 11 is moved axially and finely tunes along half-round bar 12, the two ends of half-round bar 12 are connected with respectively a sheath 13 by pin 21 and pin hole, two sheaths 13 are connected in half-round bar 12 between two support bars 9 with holes by the type of attachment of meshing screw pair respectively, screw rod 14 forms screw pair with lower tapped through hole, screw rod 14 is installed with drag hook bumping post 19 near the end of object disposing platform 5, screw rod 14 is connected with the first drag hook 20 by drag hook bumping post 19, and the first drag hook 20 can circumferentially rotate relative to drag hook bumping post 19, the afterbody of screw rod 14 is by contiguous block 15, handle bumping post 16 is connected with first handle 17, the structure of upper and lower resetting-mechanism is: slide block 27 is movably arranged on the left side of base 7, in actual use, can as required slide block 27 be movably arranged on to the right side of base 7, mobile jib 24 lower ends that reset are provided with slide block 27, in slide block 27 outsides, offer tapped through hole, in tapped through hole, be provided with and slide block 27 can be locked to the 5th bolt 28 on base 7, one end of cross bar 23 and the first fixed block 25 surround on the mobile jib that resets, the 6th bolt 29 is fixedly connected on cross bar 23 ends and the first fixed block 25 on the mobile jib 24 that resets, Wicresoft's positor 26 is fixedly connected on cross bar slide block 22, cross bar slide block 22 is movably arranged on cross bar 23, and cross bar slide block 22 can move axially along cross bar 23.

As Figure 10, Figure 11, Figure 12, Figure 13, Figure 14, the structure of Wicresoft's positor 26 shown in Figure 15 is: comprise the fixed block 103 be fixed on cross bar slide block 22, at interior upper through hole and the lower through-hole be parallel to each other that laterally offer of fixed block 103, fixed block 103 tops offer two the first screwed holes, two the first screwed holes communicate with upper through hole respectively, fixedly the first bolt 104 of use is housed respectively in two the first screwed holes, the bar handle of drag hook 101 passes through hole and stretches out, the cross sectional shape of the bar handle of drag hook 101 is the semicircle step shape, the first bolt 104 can be locked mutually with the upper plane of the semicircle step bars handle of drag hook 101, thereby drag hook 101 is fixed in fixed block 103, handle 111 ends offer the semicircle stepped hole 122 matched with the bar handle of drag hook 101, semicircle stepped hole 122 upper ends offer the second screwed hole 121, the second screwed hole 121 communicates with semicircle stepped hole 122, handle 111 is installed on the bar handle tail end of drag hook 101 by semicircle stepped hole 122, in actual use, can in the second screwed hole 121, the second bolt be set, so that drag hook 101 and handle 111 are mutually permanently connected.Adjusting screw(rod) 106 passes lower through-hole and stretches out, be positioned on the outer adjusting screw(rod) 106 of fixed block 103 and be rotary with respectively left nut 51 and right nut 52, left nut 51 and right nut 52 are axially fixed in adjusting screw(rod) 106 in fixed block 103, parietal bone pin 109 tail ends are connected with adjusting screw(rod) 106 left ends by adapter sleeve 107, on the head end of parietal bone pin 109, be provided with anti-skidding groove, can prevent between parietal bone pin 109 heads and breaking part skeleton, skidding in operation process, avoid the breaking part skeleton is caused to secondary injury, between drag hook 101 and parietal bone pin 109, also be provided with bow type block 102, drag hook 101 is positioned at the upper groove of bow type block 102, parietal bone pin 109 is positioned at the low groove of bow type block 102, at the upper groove top, be provided with the 3rd screwed hole, in the low groove bottom, be provided with the 4th screwed hole, in the 3rd screwed hole at upper groove top, be provided with fixedly the 3rd bolt 181 of use, in the 4th screwed hole of low groove bottom, be provided with fixedly the 4th bolt 108 of use, the 3rd bolt 181 and the 4th bolt 108 are fixed on the upper of bow type block 102 by drag hook 101 and parietal bone pin 109 respectively, in low groove, drag hook 101 and parietal bone pin 109 are parallel to each other and the mutual alignment phenomenon that can not be shifted.

During operation, by object disposing platform 5, base 7, meshing screw pair between four the first support bars 6, object disposing platform 5 swings are locked to required height, in practical operation, when patient's upper arm or thigh place bone fracture, injured limb is placed on the object disposing platform 5 of folding operative reduction platform, be illustrated in figure 5 the folding overall structure schematic diagram of operative reduction platform, when patient's underarm or shank place bone fracture, injured limb is placed on the object disposing platform 5 of operative reduction platform of expansion, be illustrated in figure 5 the structural representation that the operative reduction platform launches, then in the appropriate location at bone fracture position, implant Kirschner wire, make Kirschner wire run through the skeleton both sides, equally, by regulating two second support bars 8 and base 7, and and two support bars 9 with holes between meshing screw pair, in case of necessity also can be by regulating meshing screw pair between sheath 13 and support bar with holes 9, adjust and lock the position of haulage gear, the first drag hook 20 in haulage gear is positioned on same level with Kirschner wire, shake first handle 17, screw rod 14 drives the first drag hook 20 and moves radially, make the first drag hook 20 move to the position at Kirschner wire place and catch on Kirschner wire, oppositely shake first handle 17, the first drag hook 20 catches on Kirschner wire and oppositely radially moves, drive the breaking part skeleton and do radial displacement to suitable position, on the outside skin histology at patient's bone fracture place, cut a little openning, the size of little openning can guarantee that drag hook 101 stretches into and get final product, take off Wicresoft's positor 26, unclamp the first bolt 104, the 3rd bolt 181 and the 4th bolt 108, drag hook 101, from the interior taking-up of fixed block 103, is extend into drag hook 101 to inside and hooks skeleton from osculum cut, then rotate left nut 51 and right nut 52, make left nut 51 and right nut 52 away from fixed block 103, now adjusting screw(rod) 106 can move axially in the lower through-hole of fixed block 103, then again the bar handle of drag hook 101 is penetrated in the upper through hole of fixed block 103, mobile drag hook 101 and make drag hook 101 be positioned at desired location after screw the first bolt 104, drag hook 101 is fixed in fixed block 103, bow type block 102 is contained between drag hook 101 and parietal bone pin 109 again, make drag hook 101 be positioned at the upper groove of bow type block 102, parietal bone pin 109 is positioned at the low groove of bow type block 102, regulate the position of bow type block 102, screw the 3rd bolt 181, the 4th bolt 108 of outwarding winding, guarantee that parietal bone pin 109 can move in the low groove of bow type block 102, in order to avoid the breaking part skeleton is caused to certain damage, then unclamp the 5th bolt 28, the slide block 27 on movable base 7, make upper and lower resetting-mechanism move to desired location, tightens the 5th bolt 28, and now, upper and lower resetting-mechanism is fixed on desired location, unclamp the 6th bolt 29, cross bar 23 ends and the first fixed block 25 integral body are moved axially to desired height along the mobile jib 24 that resets, tighten the 6th bolt 29, make cross bar 23 be fixed on required height, follow mobile cross bar slide block 22 to desired position, then the fixed block 103 on Wicresoft's positor 26 is fixedly connected on cross bar slide block 22, rotate left nut 51 and right nut 52, make left nut 51 and right nut 52 near fixed block 103, adjusting screw(rod) 106 is fastened in the lower through-hole of fixed block 103, guarantee that parietal bone pin 109 is close on the skeleton hooked by drag hook 101 not loosening, now, the 4th bolt 108 on bow type block 102 is screwed, make parietal bone pin 109 fixing in the low groove of bow type block 102, not loosening, can adopt according to actual needs with that exterior fixation bracket or internal fixation plate to fix the breaking part skeleton.In practical operation, when the breaking part skeleton is carried out laterally and radially resetting traction, need to be combined with X ray and observe the breaking part skeleton, when using X ray, the operator opens X ray, traction laterally and radially is fixed on behind a certain position to the range of exposures of leaving X ray, in use procedure, has greatly reduced the health radiation of X ray to the operator.

The operative reduction platform of said structure, on the operative reduction platform, be provided with upper and lower resetting-mechanism and haulage gear, can carry out laterally and radially resetting traction to the breaking part skeleton, for the condition of providing convenience in doctor's operation, more convenient to operate, save operating time, further improved operation efficiency; In addition, adopt Wicresoft's positor 26 traction that laterally resets, when selecting to use exterior fixation bracket to fix the breaking part skeleton, need on the skin histology of the outside of injured limb, cut a little openning, greatly reduce wound area, also greatly reduced patient's misery.

Claims

1. operative reduction platform, comprise object disposing platform and base, object disposing platform is connected to the base top by four the first support bars, four the first support bars and object disposing platform, between base, adopt the type of attachment of meshing screw pair, it is characterized in that: the both sides away from the base front end of object disposing platform respectively are equipped with second support bar, two the second support bars are connected with support bar with holes respectively, pull bar is connected with the upper end of two support bars with holes, pull bar, two support bars with holes and two the second support bars form a support frame, the second support bar and base, and with support bar with holes between be connected the type of attachment that adopts respectively meshing screw pair, between two support bars with holes, haulage gear is installed, on the base of object disposing platform below, upper and lower resetting-mechanism is installed, the structure of haulage gear is: on main body, offer through hole and lower tapped through hole on first, and on first, through hole is mutually vertical with lower tapped through hole, on the top of main body, offer the screwed hole communicated with upper through hole, in screwed hole, be provided with the fixedly bolt of use, half-round bar passes through hole on first, bolt can be locked in half-round bar in main body, two ends at half-round bar are connected with respectively a sheath by pin and pin hole, two sheaths are connected in half-round bar between two support bars with holes by the type of attachment of meshing screw pair respectively, screw rod and lower tapped through hole form screw pair, screw rod is installed with the drag hook bumping post near the end of object disposing platform, screw rod is connected with the first drag hook by the drag hook bumping post, and the first drag hook can circumferentially rotate relative to the drag hook bumping post, the afterbody of screw rod passes through contiguous block, the handle bumping post is connected with first handle, the structure of upper and lower resetting-mechanism is: slide block is movably arranged on base, the mobile jib lower end that resets is provided with slide block, in the slide block outside, offer tapped through hole, in tapped through hole, be provided with can be by slider locking the 5th bolt on base, crossbar end and the first fixed block surround on the mobile jib that resets and the 6th bolt crossbar end and the first fixed block are fixedly connected on the mobile jib that resets, Wicresoft's positor is connected on the cross bar slide block, and the cross bar slide block is movably arranged on cross bar and the cross bar slide block can move axially along cross bar.

2. according to operative reduction platform claimed in claim 1, it is characterized in that: the structure of Wicresoft's positor is: comprise the fixed block be arranged on the cross bar slide block, in fixed block, laterally offer the upper through hole and the lower through-hole that are parallel to each other, the fixed block top offers the first screwed hole, the first screwed hole communicates with upper through hole, fixedly the first bolt of use is housed in the first screwed hole, the bar handle of drag hook passes through hole and stretches out, the cross sectional shape of the bar handle of drag hook is the semicircle step shape, the first bolt can be locked mutually with the upper plane of the semicircle step bars handle of drag hook, thereby drag hook is fixed in fixed block, handle is fixed on the tail end of drag hook bar handle, adjusting screw(rod) passes lower through-hole and stretches out, and is positioned on the outer adjusting screw(rod) of fixed block and is rotary with respectively left nut and right nut, and left and right nut can be axially fixed in adjusting screw(rod) in fixed block, and parietal bone backshank end is connected with the adjusting screw(rod) end by adapter sleeve.

3. according to operative reduction platform claimed in claim 2, it is characterized in that: on the end face of parietal bone needle section, be provided with anti-skidding groove.

4. according to the described operative reduction platform of claim 2 or 3, it is characterized in that: handle end offers the semicircle stepped hole matched with the bar handle of drag hook, semicircle stepped hole upper end offers the second screwed hole, the second screwed hole communicates with the semicircle stepped hole, handle is installed on the bar handle tail end of drag hook by the semicircle stepped hole, fixedly the second bolt of use is housed in the second screwed hole, and the second bolt can be fixedly connected on handle on the bar handle of drag hook.

5. according to the described operative reduction platform of claim 2 or 3, it is characterized in that: be provided with bow type block between drag hook and parietal bone pin, drag hook is positioned at the bow type block upper groove, the parietal bone pin is positioned at the bow type block low groove, at the upper groove top, be provided with the 3rd screwed hole, in the low groove bottom, be provided with the 4th screwed hole, in the 3rd screwed hole, be provided with the 3rd bolt that fixing drag hook is used, in the 4th screwed hole, be provided with the 4th bolt that fixing parietal bone pin is used, the 3rd bolt and the 4th bolt are fixed on the upper of bow type block by drag hook and parietal bone pin respectively, in low groove, make drag hook and the parietal bone pin phenomenon that mutually can not be shifted.