Reduction forcepsTechnical field
The present invention relates to medical instruments field, particularly a kind of reduction forceps.
Background technology
After fracture, generally need to adopt bone holding forceps that knochenbruch is resetted, and be fixed by steel plate, screw etc.Conventional reduction forceps, main two hinged forming of tong arm by X-type, front end is as clamp, rear end is as handle, after fracture, two sections of knochenbruch that disconnect, due to pullling under traction at muscle, there will be and be overlapping, in the time that knochenbruch is resetted, need to use at least two reduction forceps to clamp respectively two sections of knochenbruch, and by medical worker, two sections of end bones are pulled open to reset position and with steel plate and fixed, the shift position size of two sections of knochenbruch need to be leaned on manual adjustment, knochenbruch is difficult to justify align, even sometimes, after knochenbruch resets, take away bone holding forceps and carry out steel plate when fixing, knochenbruch recovers original dislocation state, brought the inconvenience of work to doctor, also increased patient's misery simultaneously.
Therefore,, for overcoming the above problems, need one can clamp respectively two sections of knochenbruch and knochenbruch is drawn to reset position knochenbruch position is effectively locked, the reduction forceps of avoiding knochenbruch again to misplace.
Summary of the invention
In view of this, the object of the invention is to overcome defect of the prior art, provide a kind of knochenbruch can traction to reset position and to knochenbruch position to carry out the effectively reduction forceps of locking.Reduction forceps of the present invention, comprise at least two splenial bone pincers and the connecting rod that is connected adjacent two splenial bones pincers, longitudinal guiding mechanism that connecting rod comprises gonnecting rod body, adjusting lever and gonnecting rod body is longitudinally moved with respect to adjusting lever along it, longitudinally guiding mechanism comprises along gonnecting rod body and is longitudinally fixedly arranged on the tooth bar on gonnecting rod body, the lock-nut that is rotationally connected with adjusting lever and coordinates the gear of transmission and longitudinally move with respect to adjusting lever along it for locking gonnecting rod body with described tooth bar;
Further, described connecting rod also comprises makes the transverse adjusting mechanism of adjusting lever along gonnecting rod body transverse shifting, transverse adjusting mechanism comprises the screw that is connected with the rotatable single-degree-of-freedom of gear and the screwed hole along adjusting lever horizontally set, and screw and screwed hole are in mating connection and can carry out worm drive;
Further, described gear face is provided with interior hexagonal boss, and described screw is socket head screw;
Further, described splenial bone pincers comprise the caliper I and the caliper II that are hinged, caliper I and caliper II include the tong arm and the clamping part that are mutually permanently connected, clamping part is provided with the through hole that is communicated with its inner side and outside, in through hole, being provided with grip block and grip block governor motion and grip block can slide axially along through hole, grip block governor motion comprises screw rod, fixing head, Compress Spring and screws nut, and fixing head is fixed on and on clamping part and by through hole, covers and fixing head is provided with via hole; Screw rod one end is fixedly connected with grip block along grip block glide direction, the screw rod other end through the via hole on fixing head with screw nut and be connected by threaded engagement, Compress Spring is located in through hole also bullet and is peaked between fixing head and grip block;
Further, described grip block is the curved surface that can seamlessly transit with the clamping face of clamping part towards the surface of clamping part inner side;
Further, in described caliper I, be fixed with ratchet, ratchet is coaxial with the hinge of caliper I, and caliper II is provided with the ratchet matching with described ratchet;
Further, on described tong arm, be fixed with attachment screw, tong arm is detachably fixedly connected on described clamping part by attachment screw;
Further, described gonnecting rod body comprises rack bar and connecting rod, and described connecting rod one end is fixedly connected with splenial bone pincers, and the connecting rod other end is articulated with rack bar by spherical linkage;
Further, described grip block is provided with positive stop lug boss, and through hole is shoulder hole;
Further, be arranged with vice body support on described connecting rod, vice body support is used for being fixedly connected with splenial bone pincers.
The invention has the beneficial effects as follows: reduction forceps of the present invention, comprise at least two splenial bone pincers, can clamp respectively two sections of knochenbruch, because knochenbruch can occur staggered under the pullling of muscle, medical worker can first unclamp locking locknut, rotate by driven wheel, and then make rack-and-pinion coordinate transmission, thereby make gonnecting rod body longitudinally move and drive two splenial bone pincers longitudinally to relatively move along connecting rod with respect to adjusting lever along it, final traction two knochenbruch relatively move, when knochenbruch is drawn to reset position, thereby screw the relative position of lock-nut locking knochenbruch, reduction forceps of the present invention, only need the rotation of adjusting gear can make knochenbruch longitudinally relatively move along connecting rod, thereby knochenbruch is resetted, without adopting manual adjustment fixation of bone fragments position, after knochenbruch resets, thereby the relative position of connecting rod lockable two splenial bone pincers makes the locking of knochenbruch relative position, avoid performing the operation in subsequent operation, knochenbruch recovers dislocation, thereby alleviate medical worker's working strength, alleviate patient's misery.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of connecting rod of the present invention;
Fig. 3 is the top view of Fig. 2;
Fig. 4 is the structural representation of caliper I;
Fig. 5 is A place enlarged drawing in Fig. 3;
Fig. 6 is B place enlarged drawing in Fig. 4;
Fig. 7 is the structural representation of gear of the present invention.
Detailed description of the invention
Fig. 1 is structural representation of the present invention; Fig. 2 is the structural representation of connecting rod of the present invention; Fig. 3 is the top view of Fig. 2; Fig. 4 is the structural representation of caliper I; Fig. 5 is A place enlarged drawing in Fig. 3; Fig. 6 is B place enlarged drawing in Fig. 4; Fig. 7 is the structural representation of gear 8 of the present invention.As shown in the figure, reduction forceps in the present embodiment, comprise at least two splenial bone pincers 4 and the connecting rod that is connected adjacent two splenial bones pincers 4, as shown in Figure 3, connecting rod comprises gonnecting rod body 7, adjusting lever 6 and longitudinal guiding mechanism that gonnecting rod body 7 is longitudinally moved with respect to adjusting lever 6 along it, longitudinally guiding mechanism comprises along gonnecting rod body 7 and is longitudinally fixedly arranged on the tooth bar on gonnecting rod body 7, the lock-nut 23 that is rotationally connected with adjusting lever 6 and coordinates the gear 8 of transmission and longitudinally move with respect to adjusting lever 6 along it for locking gonnecting rod body 7 with described tooth bar, in the present embodiment, gonnecting rod body 7 is provided with rach slot, tooth bar is fixed at rach slot bottom, rach slot two sides have mobile chute 14, on adjusting lever 6, be fixedly connected with screw 10, screw 10 is rotationally connected with gear 8 through mobile chute 14, as shown in Figure 5, on screw 10, be positioned at gonnecting rod body 7 both sides and be fixedly connected with respectively lock-nut 23 and stop nut 22 by screw thread, after knochenbruch has resetted, thereby can screw lock-nut 23 makes screw 10 and the fixing lock link body 7 of gonnecting rod body 7 and adjusting lever 6 (described is herein longitudinally the length direction of connecting rod along its longitudinal relatively moving, be laterally the direction perpendicular to connecting rod).
In the present embodiment, described connecting rod also comprises makes the transverse adjusting mechanism of adjusting lever 6 along gonnecting rod body 7 transverse shiftings, as shown in Figure 3, transverse adjusting mechanism comprises the screw 10 that is connected with the rotatable single-degree-of-freedom of gear 8 and along being laterally located at the screwed hole in adjusting lever 6, screw 10 and screwed hole are in mating connection and can carry out worm drive, because knochenbruch is in reseting procedure, conventionally after needing first knochenbruch to be along the longitudinal movement, along knochenbruch transverse shifting, knochenbruch is docked again, medical worker's releasable lock stops nut 23, lock-nut 23 and stop nut 22 can together be rotated with screw 10, certainly, herein for ensureing that stop nut 22 can together rotate with screw 10, stop nut 22 can be welded on screw, then rotary screw 10, adjusting lever 6 is axially relatively moved along screw 10, be fixedly connected with respectively lock-nut 23 and stop nut 22 and be positioned at gonnecting rod body 7 both sides on screw 10, therefore screw 10 is relative with gonnecting rod body 7 fixing vertically, in the time that screw 10 and adjusting lever 6 axially relatively move along it, and then can drive adjusting lever 6 laterally to move along it with respect to gonnecting rod body 7.
In the present embodiment, described gear 8 end faces are provided with interior hexagonal boss 13, described screw 10 is socket head screw, interior hexagonal boss 13 is coaxially fixed on gear 8 one end faces and stretches out from the mobile chute 14 of gonnecting rod body 7, interior hexagonal boss 13 all can coordinate transmission with the drill bit of medical electric drill with soket head cap screw, can realize and utilize electric drill driven wheel 8 or hex head screw rotation to make knochenbruch realize reset, and then greatly alleviate medical worker's labor intensity.
In the present embodiment, described splenial bone pincers 4 comprise the caliper I and the caliper II that are hinged, as shown in Figure 4, caliper I and caliper II include the tong arm 5 and the clamping part 1 that are mutually permanently connected, clamping part 1 is provided with and is communicated with its inner side (" inner side " herein refers to the side that clamping part 1 directly contacts with knochenbruch with the through hole in outside, a side is " outside " in the other direction), as shown in Figure 6, in through hole, being provided with grip block 2 and grip block governor motion and grip block 2 can slide axially along through hole, grip block governor motion comprises screw rod 18, fixing head 16, Compress Spring 19 and screw nut 17, fixing head 16 is fixed on clamping part 1 outside and through hole covering and fixing head 16 is provided with to via hole, screw rod 18 one end are fixedly connected with grip block 2 along grip block 2 glide directions, screw rod 18 other ends through the via hole on fixing head 16 with screw nut 17 and be connected also and can carry out worm drive by threaded engagement, Compress Spring 19 is located in through hole and bullet peaks between fixing head 16 and grip block 2 as grip block 2 provides elastic force to clamping part inner slide, screws nut 17 can make grip block 2 slide in through hole by rotation.In the time that medical worker need to reset to knochenbruch, grip block 2 can be adjusted to concordant with the clamping face 3 of caliper clamping part 1 (" clamping face 3 " the as herein described curved surface for directly contacting with knochenbruch on clamping part 1) and make reduction forceps clamp knochenbruch time, increase the contact area of clamping face 3 and knochenbruch, avoid reduction forceps slippage from knochenbruch, reduce the damage of reduction forceps to knochenbruch simultaneously, after reset completes, grip block 2 can be regulated and slip in through hole, abdicate space and be convenient to medical worker steel plate is inserted in jaw knochenbruch is fixed.
In the present embodiment, described grip block 2 is the curved surface seamlessly transitting with the clamping face 3 of clamping part 1 towards the surface of clamping part 1 inner side, be beneficial to make grip block 2 to form a complete smooth surface towards the surface of clamping part 1 inner side and clamping face 3, make reduction forceps more reliable to the clamping of knochenbruch, can avoid the damage of reduction forceps to knochenbruch simultaneously.
In the present embodiment, in described caliper I, be fixed with ratchet, ratchet is coaxial with the hinge of caliper I, caliper II is provided with the ratchet matching with described ratchet, (ratchet and ratchet are not shown in the drawings), ratchet and ratchet make caliper I and caliper II along clamping direction one-directional rotation, medical worker clamps splenial bone pincers 4 after knochenbruch, can hold tong arm 5, splenial bone pincers 4 inverse-stopping functions due to click, to can not get loose, and when splenial bone being clamped to 4 while taking off, can pull ratchet it is got loose.
In the present embodiment, on described tong arm 5, be fixed with attachment screw 20, tong arm 5 is detachably fixedly connected on clamping part 1 by attachment screw 20, after knochenbruch is resetted, generally need to knochenbruch be fixed with steel plate, now, medical worker can pull down the tong arm 5 on splenial bone pincers 4, avoid interfering with tong arm 5, disturb carrying out smoothly of operation.
In the present embodiment, described gonnecting rod body 7 comprises rack bar 15 and connecting rod 12, described connecting rod 12 one end are fixedly connected with splenial bone pincers 4, connecting rod 12 other ends are articulated with rack bar 15 by spherical linkage 9, because knochenbruch is in reseting procedure, 4 needs of two splenial bone pincers carry out relatively rotating of trace, and spherical linkage 9 can ensure that two splenial bone pincers 4 carry out flexibly, relatively rotate accurately, ensures to perform the operation to carry out smoothly.
In the present embodiment, described grip block 2 is provided with positive stop lug boss, through hole is shoulder hole, positive stop lug boss can peak on shoulder hole aperture inner face, carry out spacing to the slip of grip block 2, while ensureing grip block 2 to clamping part 1 inner slide to extreme position, grip block 2 can seamlessly transit towards the surface of inner side and the clamping face 3 of clamping part 1.
In the present embodiment, on described connecting rod 12, be arranged with vice body support 11, vice body support 11, for being fixedly connected with splenial bone pincers 4, has also been threaded connection mounting nuts 21 on connecting rod 12, by removing and installing nut 21, and dismounting connecting rod from splenial bone pincers 4 easily.
Finally explanation is, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.