US 2143922 A
Description (OCR text may contain errors)
Patented Jan. 17, 1939 UNITED STATES PATENT OFFICE BONE SURGERY APPLIANCE Application September 16, 1936, Serial No. 101,119
This invention relates to improvements in bone surgery appliances and pertains to the use of wires applied through the flesh and bone of a fractured member of the living body for holding the bone fragments in their proper relative positions after the fracture has been reduced and apposition of the fragments effected.
An object of the invention is to afford skeletal wires provided with integral beads for use in conjunction with adjustable members for applying clamping force to bone fragments of an injured member by which the fragments are firmly held together during convalescence without impairment of circulation through the blood vessels.
Other objects and advantages of the invention are shown in the accompanying: drawing, in which:
Fig. 1 is a fragmentary view of an injured member partially in section showing skeletal wires applied to the bone fragments and members for clamping the fragments together; and
Figs. 2 and 3 are end views respectively of the parts of a tautner of a preferred form used in the device.
An illustrative embodiment of the invention is shown in Fig. 1 in which wires 33 and 34 provided with beads 353i3 respectively, are employed in conjunction with corresponding opposing members 3l38 and tautners 39 and t0. Each of the opposing members 3l--38 consists of a tube having a longitudinal bore made therein through which the corresponding wire closely fits and has longitudinal sliding movement therein. Preferably, one end of each tube has formed thereon a bead di42, and upon their opposite ends a radial flange 4344.
In this instance, the bone fragments 45 and iii of the injured member ll, after the fracture has been reduced in the usual manner, are secured together by inserting the Wires 3334 through both fragments preferably in opposite directions and moving them to such positions that their beads 35-35 bear against opposite sides of the fractured bone. The opposing members 3l38 are then placed upon the forwardly extending ends of the wires and pressed through the flesh until their beaded ends bear against the bone upon the sides thereof opposite the beads on the corresponding wires. The tautners 39 and 40 are then secured upon the outer forward ends of the wires respectively, after which by turning the nuts 48-49 against the flanges t3 l l, traction is applied to the wires and counter-traction to the opposing members, and thereby the bone fragments are held firmly clamped definitely in place between the beads on the wires and opposing members. In this instance complete internal fixation of the bone fragments is established without causing pressure upon blood vessels located about the fracture and consequent interference with blood circulation. Preferably, the protruding ends of the wires are severed and the tautners and exposed ends of the wires are suitably covered by use of plaster of Paris or bandages (not shown) to prevent interference therewith.
In applying the invention the required surgical operations are carried out with the use of local anaesthetics, antiseptics and sterilizing methods as in the usual practice of surgery.
Wires provided with beads may also be used for connecting bone fragments in cases of open surgery for establishing fixation between bone fragments with or without use of the tautners, especially where a group of wires provided with beads are inserted in different directions through adjoining bone fragments and held in place from retraction by any suitable means. The principal objective is to exert sustained pressure of one bone fragment against another dur ing the convalescent period without interference with the circulatory system in the flesh surrounding the region of the fracture.
What I claim is:
A surgical appliance for fixation of fragments of fractured bones, said appliance consisting of a skeletal wire adapted to be projected through said fragments and having a bead fixed thereon adapted to engage directly against one of said fragments, an opposing member constituted of a tube disposed movably upon said wire and provided at its inner end with a bead adapted to engage directly against the other fragment upon that side of the bone opposite the bead on said wire, and adjustable means on said wire for applying relative axial movement to said wire and member thereby to clamp said fragments together between said beads.
EARL E. LONGFELLOW.