US2362957A - Surgical bone clamp - Google Patents

Description

NOV. 14, 1944. 5 HACKETT SURGICAL BONE CLAMP Filed Sept. 27, 1941 INVENTOR.

BY ATTORN.

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Patented Nov. 14, 1944 SURGICAL BONE CLAMP George S. Hackett, Canton, Ohio, assignor to Harry Herschel Leiter, Warsaw, Ind. Application September 27,1941,SerialNo. 412,593

' 3 Claims. (01. 12s--s4s) This invention relates to improvements ina surgical bone clamp for use in reduction of a bone fracture and during application of a cine-- ture by whichto maintain fixation of bone fragments for a more An. object of the invention is to afford an adjustableinstrument fortemporarily holding in place, after reduction thereof, the fragments of a'fractured bone, having rneans to facilitate envcirclement of the bone with a cincture at the.

point of the reduced fracture.

or less protracted period. of

at its rear end aneinternally threaded lug Upon the shank is removabl-y positioned a slidable block. 5 provided with a guide lug 6 that projects into the slot 2 in theshank, and 'apeg .Another object ofthe invention is to provide v in a clamp for'reduced bone fractures, opposing jaws between which is secured the bone fragments-during application of a cincture thereto,

one off'which jaws is adjustably movable toward and from the other jaw, and which also is supported so, that it automaticallydropsout of the way to. permit unobstructed removal of the instrument from engagement wit h the bone out through the incision in the surrounding flesh after the cincture has been applied.

And a further object of the invention isto provide a cincture' for use in conjunction with a bone-clamp so formed that, while the clamp/is in operative position and the cincture'is being applied, encirclement. of the bone by the cincture wire is readily accomplished without departure .of the wire from the intended course.

7 Other objects, and advantages of the invention appear in the following description. k

An illustrative embodiment of the invention is shown inthe accompanying drawing, in which: a Fig. 1 is a side ,elevational view ofv an instrument in which thefinvention is-incorporated,

parts thereof being broken away;

. Fig. 2 isa top plan viewof the instrument projected from, Fig. 1; I

Fig. 3'is a cross-sectional viewshowing afront end portion of the instrument, the section being onthe line 33 of Fig. 2; v

Fig. iris anothencross-sectional view of the instrument showing the movable jaw, the section being on the line 44 of Fig. 2;

Fig. 5 is a side elevational view of a cincture used with the instrument, shown in its initial form with a portion in section; and

Fig. 6 is an elevational view of the cincture as it appears after being clinched, portions thereof being broken away.

The illustrative embodiment of the invention consists of a base member I having in its shank or medial portion an elongated slot 2, at its forward end an upturned bifurcated hook 3, and

1 projects from the block loosely through said slot, and is. provided at its lower end ,witha crosshead 8 wherefore to secure to. secureflthe block inoperative position on the shanksothat longitudinal movement ofv the bIockjQ hQjthe shank, whilethe lug is inthe slot, is permitted.

A threaded operating rod {9" extends through 1 the lug 4 andis provided atits. forwardend with agrooved nib 10 that projects into a cavity il made. in the rear end ofthe block, and a lockscrew l2 disposed in saidlolock extends into the groove of the nib wherefore tosecure the operating rod and block together while permitting free turning movement of; the rod. Upon rotation of the rod the block is adjustably moved on the shank.

In theforward end of the block Sis secured a jaw l 3 having.limitedfore and aft pivotal movement relative ,theretoand disposed OPPO- sitely with respect 'to'the'h'ook 3, the jaw-being arranged so as to stand erect in operativposition when the instrumentois applied,.-and' drop down upon the shank out of the way to permit removal of'the instrument from the situs without encroachment of the jaw upon tissues'jabout 30- the incision. When thefjaw I3 is inlerect position, theforward endof the block'i and, the

- front-of the jaw present a continuousflbone-contacting face. ,g

A feature of the invention is the preferred formof the hook 3 which has 'upward curvature. and is fork-shaped. The concave faces of its tines have made therein transverse serrations l4 to enhance its gripping properties. An .arcuate web I5 is disposed between the tines and extends across the space therebetween toform I an upwardly inclined deflector. In this manner the back of the hook is closedby the web and the opposite face of the hook Ihas, an arc'uate cavity l6 between its tines open at its'upper "end.

There are also divergent channels ll, made in the upper face of the hook at its juncture with the shank which extend from the sides thereof leading into the cavity I6.

For use in conjunction with the bone clamp there is provided a cincture which is applied around the bone while the fragments thereof are temporarily held in place by the bone clamp and which remains in place for a protracted period following removal of the clamp. A preferred form of a suitable cincture is shown in Figs. 5 and 6.

at the place of fracture, the bone fragments are then reduced as in the usual practice and the instrument is inserted through the incision and th hook is moved into position back of the bone, after which, by manipulating the operating rod 8, the block with its pivoted jaw are progressed along the shank toward the hook and consequently the bone fragments become clamped by the adjacent end of the block and said jaw against the hook. While the fragments are thus firmly held in position the blunt end of the tie wire is introduced through one of the channels I! between the jaw and the overlying bone into the cavity 16 and thrust against the arcuate web by which the wire is caused to curve upwardly during its passage and encircles the bone. The beaded end of the wire is then severed, the remaining end portion of the wire is inserted through the tube 20, and the projecting end of the wire is grasped by use of any suitable instrument (not shown) with which traction is applied to the wire while counter-traction is made against the outer end of the tube. Thus, the wire is formed into a loop 2| that encircles and is drawn tight around the bones While the wire is thus held taut it is backturned over the outer end of the tube against the exterior wall thereof as indicated at 22 to prevent slackin of the wire loop. A suitable protective shield, such -as a length of rubber tubing (not shown) is placed over the outer end of the tube and the backturned or clinched. end 22 of the wire to oted jaw are moved backwardly, whereupon the jaw drops out of the way automatically onto the shank thereby permitting greater freedom of movement of the instrument as it is withdrawn from engagement with the bone, which is advantageous, as is thereby obviated interference of the pivoted jaw with the exposed flesh and obstruction by the surrounding wall of the cast.

When convalescence has progressed sufficiently to permit removal of the cincture, .the bent end 22 of the wire is severed, counter-traction is applied to the tube 20 while concurrently counter pressure is made against the bone, the operation being carried out with the use of any suitable instruments (not shown) as arev appropriate for operations of that character.

To facilitate sterilization, the instrument is constructed so as to permit dismemberment and reassemblage of its parts readily. For instance: By first removing the lock-screw the operating rod is disconnected from the block upon unscrewing the rod out of the lug in which it is threaded, whereupon by raising the rear-end of the block sufficiently to clear the guide lug from the slot in the shank the block is free to be turned laterally upon the axis of the peg to a position at right angles to the shank to permit withdrawal of the cross-head through the guide slot. Thus, the several parts may be subjected advantageously to sterlization separately.

Variations from the particular construction above disclosed may be resorted to by the exercise of skill in the art, without departure from the spirit or scope of the invention, and the following claims are intended to be inclusive of such variations.

What I claimis:

1. In a surgical bone clamp, a base member having at one end an upwardly curved bifurcated hook provided with an upturned arcuate cavity and at its other end a threaded lug, an arcuate web'disposed between the tines of said hook providing a deflector, said hook having channels at its juncture with said member in the upper face thereof, a block longitudinally movable on said prevent interference with gauze or other supermember provided with a pivoted jaw opposed to the hook and having limited pivotal movement thereon toward and from said hook'the forward surfaces of said block and jaw affording a continuous bone-contacting face, and an operating threaded rod extending through said lug connected with said block for actuating the block.

2. In a surgical bon clamp, a base member having at one end a threaded lug and at its other end an upwardly curved hook provided with a deflector cavity and having in its upper face at its juncture with said member an open channel for the passage therethrough of a cincture wire into said cavity, a block longitudinally movable on said member toward and from said hook and provided with a pivoted upstanding jaw opposing said hook, the forward surfaces of said block and jaw presenting a continuous bone-contacting face and a threaded operating rod extending through said lug and engaging said block for actuating the block.

3. A surgical bone clamp consisting of a base having at one end an upturned hook and a threaded lug at its other end, a movable member on said base provided with an abrupt forward end and a pivoted upstanding jaw that affords together with the said abrupt end a continuous bone-contacting face opposed to said hook, and a threaded operating rod in said lug connected with said member for adjusting same on said base.

GEORGE S. HACKETT.

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