Apparatus and method for cleaning a surgically prepared bone surface

Abstract

An apparatus suitable for cleaning a surgically prepared working surface comprises a body portion adapted to supply pressurized fluid (preferably carbon dioxide gas) to the surgically prepared working surface and aspirate surface debris dislodged from the surgically prepared working surface. The apparatus further comprises a head portion adapted to constrain the supplied pressurized fluid to flow substantially along the surgically prepared working surface to dislodge debris there from when the head portion is in contact with the surgically prepared working surface. The dislodged surface debris are aspirated by the body portion.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates generally to surgical instruments, and more particularly to apparatus and method for cleaning a surgically prepared working surface. [0003] 2. Description of the Related Art [0004] In traditional orthopedic surgery, bone is prepared to receive a prosthetic implant by first cutting or sculpting the bone with a manual or powered tool such as a saw, drill, or broach. Next, the exposed bone is usually cleaned with a sterile saline solution for lavage and irrigation. Finally, suction is applied to remove debris. Often, surgical sponges are inserted into a cavity or against the bone surface to absorb excess fluids. [0005] Joint replacements are commonly but not necessarily secured with the aid of “joint cement” or biocompatible adhesives. A typical such cement is a polymethyl methacrylate. The success of such adhesives is thought to depend in part on proper preparation of the bone bed. [0006]...

AI Technical Summary

Problems solved by technology

Joint replacements are commonly but not necessarily secured with the aid of “joint cement” or biocompatible adhesives.

When a bone cement is also used, the use of gas increases the likelihood of strong mechanical interdigitation of the bone cement with the bone.

Simultaneous manipulation and coordination of both gas supply and suction is difficult.

Flow of the gas is not well controlled or confined to the bony surface.

The difficulty of this technique in increased in surgical situations that permit only limited access or interfere with the surgeon's freedom of motion.

The very small incision does not permit full freedom to access the cut bone surfaces from any arbitrary angle.

Conventional gas jet instruments and suction instruments are not well suited to access the planar cuts in the knee without more exposure than that offered in minimally invasive surgical techniques.

Images