FEMUR-SETTING SURGICAL DEVICE

• US 3,554,193 A
• Filed: 07/05/1968
• Issued: 01/12/1971
• Est. Priority Date: 07/05/1968
• Status: Expired due to Term

• Current Assignee: Konstantinou Ilias, Merton F. Wilcox
• Original Assignee: Konstantinou Ilias, Merton F. Wilcox
• Inventors: KONSTANTINOU ILIAS, Wilcox, Merton F.
• Application Number:
  US04/742,713
• Time in Patent Office: 921 Days
• US Class Current: 606/65
• CPC Class Codes: A61B 17/746 the longitudinal elements coupled to a plate opposite the femoral head
• CPC Class Codes: A61B 17/748 with means for adapting the angle between the longitudinal elements and the shaft axis of the femur
• CPC Class Codes: Y10T 403/32147 Plate or side forms bearing surface
• CPC Class Codes: Y10T 403/32704 Stud extends into ball

Abstract

A surgical device for use in the internal fixation of a fracture in the upper region of the femur including an elongated member having a portion extending through the fracture and a head, a bone plate having an upper portion and a shank portion adapted to be secured to the shaft of the femur. The upper portion of the plate has an opening for the reception therein of the head. There is provided a connecting member positionable on the outer side of the upper portion and engageable with the head to maintain the head within the opening while permitting universal angular movement between head and upper portion. Additionally the device includes a selectively operable locking means between the connecting member and upper portion for fixing the head and upper portion to selective angular positions.

Claims

1. A surgical device for use in the internal fixation of a fracture in the upper region of the femur comprising in combination an elongated member having a portion adapted to extend through the fracture and a head portion, a bone plate including an upper portion and an elongated shank portion adapted to be secured to the shaft portion of the femur by attaching members extending into the femur shaft, said upper portion extending outwardly at an angle from the general plane of said shank portion, selectively lockable universal means associated with said upPer portion and head portion attaching said head portion to said upper portion of said plate in selected angular positions, said selectively lockable universal means including an opening extending through said upper portion of said bone plate for the reception thereinto of said head portion of said elongated member, said universal means further including a cap nut positioned adjacent the outwardly facing surface of said upper portion of said plate adjacent said opening, said cap nut including a threaded portion and a flange portion, said flange portion having a dimension greater than the dimension of said opening, said threaded portion of said cap nut being threadedly engaged with said head portion of said elongated member, said universal means further including selectively operable locking means extending between and contacting said flange portion and said upper portion adjacent said opening therein for selectively locking said head portion with respect to said upper portion in selected angular positions.

2. In the surgical device as defined in claim 1 wherein said head portion of said elongated member is rounded, and wherein said opening extending through said upper portion of said bone plate is rounded, the effective diameter of said rounded head portion being greater than the diameter of said bone plate opening.

3. In the surgical device as defined in claim 2 wherein said opening within said upper portion of said bone plate includes a tapered peripheral portion forming an inwardly facing seat for the rounded head portion of said elongated member.

4. In the surgical device as defined in claim 1 wherein said head portion of said elongated member includes an inwardly directed longitudinally extending threaded passageway, said cap-nut threaded portion being defined by an externally threaded and longitudinally extending neck portion connected to said flange portion, said neck portion of said cap nut being threadedly engaged within said passageway of said head portion thereby retaining said head portion within said opening of said upper portion.

5. In the surgical device as defined in claim 1 wherein said head portion of said elongated member includes an outwardly directed longitudinal extension having external threads, said threaded portion of said cap nut being defined by an internally threaded longitudinally extending passageway, said threaded extension of said elongated member being threadedly engaged within said passageway of said cap nut thereby retaining said head portion within said opening of said upper portion.

6. In the surgical device as defined in claim 1 wherein said selectively operable locking means includes a plurality of spaced setscrews threadedly positioned in and through said flange portion of said cap nut, said setscrews being adapted and arranged to engage said upper portion of said bone plate adjacent and spacedly around said opening thereby fixing the angular position of said head portion with respect to said upper portion in selective angular positions.

7. In the surgical device as defined in claim 4 further comprising a plurality of spaced setscrews threadedly positioned in and through said flange portion of said cap nut, said setscrews being adapted and arranged to engage said upper portion of said bone plate adjacent and spacedly around said opening thereby fixing the angular position of said head portion with respect to said upper portion in selective angular positions.

8. In the surgical device as defined in claim 5 further comprising a plurality of spaced setscrews threadedly positioned in and through said flange portion of said cap nut, said setscrews being adapted and arranged to engage said upper portion of said bone plate adjacent and spacedly around said opening thereby fixing the angular position of said head portion with respect to said upper portion in selective angular positions.

9. A surgical device for use in the internal fixation of a fracture in the upper region of the femur comprising in combination aN elongated member having a portion adapted to extend through the fracture and a spherical-shaped head of a predetermined diameter, a bone plate including an upper portion and an elongated shank portion adapted to be secured to the shaft portion of the femur by attaching members extending into the femur shaft, said upper portion extending outwardly at an angle from the general plane of said shank portion, said upper portion having an opening extending therethrough of a dimension less than said predetermined diameter for the reception thereinto of said spherical head, a connecting member positioned adjacent the outwardly facing surface of said upper portion and adjacent said opening and having a dimension greater than the dimension of said opening, said connecting member connected to said spherical head to maintain said head within said opening while permitting universal angular movement between said head and said upper portion, and selectively operable locking means adjustably connected to and carried by said connecting member and engaged outwardly against said upper portion for selectively locking said head with respect to said upper portion in selected angular positions.

10. In the surgical device as defined in claim 9 wherein said selectively operable locking means includes a plurality of spaced set screws threadedly positioned in and through said connecting member, said set screws being individually adjustable and adapted and arranged to engage said upper portion of said bone plate adjacent and spacedly around said opening thereby fixing the angular position of said head with respect to said upper portion in selective angular positions.

11. A surgical device for use in the internal fixation of a fracture in the upper region of the femur comprising in combination an elongated member having a portion adapted to extend through the fracture and a head portion, a bone plate including an upper portion and an elongated shank portion adapted to be secured to the shaft portion of the femur by attaching members extending into the femur shaft, said upper portion extending outwardly at an angle from the general plane of said shank portion, and selectively lockable universal means associated with said upper portion and head portion for attaching said head portion to said upper portion of said plate in selected angular positions, said universal means including a connecting member attached to said head member, said universal means further including a plurality of selectively operable locking members spaced around said head portion and carried by said connecting member, said locking members engaging outwardly against said upper portion for selectively locking said head portion with respect to said upper portion in selected angular positions.