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US 5,047,030 AGranted
Suction drainage-bone screw
OwnerKlaus Draenertinventor
Life of this patent
Estimating the term…
Abstract
The invention relates to a bone screw (10) which can be anchored in the bone in a firm and vacuum-tight manner, and to the use of the same in arthroplastic surgery and as a drug delivery system. The interior of the bone screw (10) has a continuous longitudinal bore (15) through which the medullary canal can be evacuated during the application of bone cement. The use of the bone screw renders it possible to fill the spongiosa honeycombs with bone cement without endangering the life of the patient.
Claims10
A bone screw to be firmly anchored in bone in an essentially vacuum-tight manner, the bone screw comprising:
- a threaded portion at a front end of the bone screw, the threaded portion having a core diameter;
- a tubular member connected to the threaded portion, the tubular member having a diameter greater than the core diameter of the threaded portion;
- a sleeve portion provided at a rear end of the tubular member opposite the threaded portion, the sleeve portion adapted to be engaged by a handle;
- a connection piece for a connecting a vacuum line to the tubular member, the connection piece being provided at the rear end of the tubular member adjacent the sleeve portion;
- and
- a longitudinal bore through the length of the bone screw.
3 more elements
Dependencies are inferred from the claim text.