Surgical instrument for manipulating a bent wire
View Patent ↗What is described is a surgical instrument for manipulating a bent surgical wire. The surgical instrument is particularly suitable for inserting one or both ends of a wire, which is bent in the shape of a U, in apertures provided for that purpose in a bone plate. The instrument possesses two jaws that can be moved relative to one another for the purpose of generating a gripping force, at least one of the jaws having a wire-receiving device which positions a bent wire, which is to be received, in a plane substantially parallel to the direction of gripping force.
1. A surgical system, comprising:
a pre-bent surgical wire having a closed end and two free ends;
a surgical instrument for manipulating said pre-bent wire, the instrument including:
two jaws that are movable relative to one another for generating a gripping force; and
a wire-receiving device provided in at least one of said jaws, the wire-receiving device positioning the closed end of the pre-bent wire in a plane which is substantially parallel to a direction of the gripping force, wherein the wire-receiving device is constructed as a groove or slot, said groove or slot being provided at a free end of the respective jaw and being open in the direction of the free end of the respective jaw, said groove or slot being defined by two side walls which stabilize the location of the closed end of the pre-bent wire, each side wall extending in the plane which is substantially parallel to the direction of the gripping force; wherein both jaws are selectively operable to substantially envelop the closed end of the pre-bent wire;
a bone plate with at least two wire-receiving apertures which are spaced apart from one another to receive the two free ends of the pre-bent wire.
2. The surgical system according to claim 1 , wherein the wire-receiving device is dimensioned to vary the distance between the two free ends of the pre-bent wire by actuation of the instrument when the pre-bent wire has been received.
3. The surgical system according to claim 1 , wherein the instrument is constructed to enable the two free ends of the pre-bent wire, which has been received and has been previously bent in the shape of a U, to extend beyond the free end of the respective jaw.
4. The surgical system according to claim 1 , wherein the wire-receiving device has dimensions which are adapted to the shape of the pre-bent wire to be received.
5. The surgical system according to claim 1 , wherein the wire-receiving device is constructed in both jaws.
6. The surgical system according to claim 1 , wherein the instrument further comprises a wire-bending device.
7. The surgical system according to claim 6 , wherein the wire-bending device includes a bending ram constructed in a region of a first of the two jaws, and a bending die constructed in a region of a second of the two jaws.
8. The surgical system according to claim 6 , wherein the wire-bending device is constructed for bending a wire in the shape of a U.
9. The surgical system according to claim 6 , wherein the wire bending device is designed for achieving a predefined radius of bending.
10. The surgical system according to claim 9 , wherein the wire-receiving device is dimensioned in conformity with the predefined radius of bending.
11. The surgical system according to claim 1 , wherein the instrument further comprises a wire-cutting device.
12. The surgical system according to claim 11 , wherein the wire-cutting device includes a cutting edge provided in a region of a first of the two jaws, and a wire-holding device provided in a region of a second of the two jaws.
13. The surgical system according to claim 12 , wherein the two jaws are capable of swivelling or of translatory movement relative to one another.
14. The surgical system according to claim 1 , wherein the instrument is a pair of forceps.
15. The surgical system according to claim 1 , wherein the distance between the two wire-receiving apertures is selected in conformity with the dimensioning of the wire-receiving device.
16. The surgical system according to claim 15 , wherein the pre-bent wire includes a radius of bending that approximately corresponds to half the distance of the two wire-receiving apertures from one another.