Abstract:
A surgical screw driver for inserting bone screws in bone tunnels in ligament reconstruction has, in a preferred embodiment, a rotatable operating shaft disposed at an angle to a drive shaft. A mechanism is on the drive shaft for retaining a bone screw. Methods of arthroscopic cruciate ligament reconstruction include the steps of introducing a surgical screw driver through a portal that is offset from the longitudinal axis of a bone tunnel and driving a bone screw mounted on the driver in the bone tunnel to fixate a bone block in the bone tunnel.
Abstract:
An apparatus for repairing in vivo torn cartilaginous or other bodily tissue, particularly torn meniscus tissue during arthroscopic surgery, employs a repair tack of biodegradable material chosen to have a degradation time in excess of the required healing time for the tissue. The repair tack has a shaft portion with a longitudinal bore and a grip portion adapted for releasable engagement by a hollow applicator. In one embodiment the grip portion of the tack is a cross bar, at the proximal end of the shaft, which fits into an open-sided slot at the forward end of the applicator.
Abstract:
This invention is an ossicular replacement prosthesis made of porous polymeric material with a metal core of the type that includes a head portion for fitting against the tympanic membrane and a shaft for bridging the middle ear to provide conduction of sound to the middle ear.
Abstract:
A cannulated bioabsorbable tack has annular ribs configured to enhance fixation to invivo tissue and is particularly effective for attaching soft tissue to bone, such as ligaments or muscles. Apparatus including a trocar wire, an inserter and an impactor facilitates arthroscopic surgical procedures for inserting the tack invivo to attach or join the tissue.
Abstract:
A cannulated bioabsorbable tack has annular ribs configured to enhance fixation to tissue, such as bone, and is particularly effective for attaching soft tissue to bone, such as ligaments or muscles in the shoulder. Apparatus and method for display the tack facilitate arthroscopic surgical procedures for attaching or joining tissue.
Abstract:
A cannulated bioabsorbable tack has annular ribs configured to enhance fixation to tissue, such as bone, and is particularly effective for attaching soft tissue to bone, such as ligaments or muscles in the shoulder. Apparatus and method for deploying the tack facilitate arthroscopic surgical procedures for attaching or joining tissue.
Abstract:
An apparatus for repairing in vivo torn cartilaginous or other bodily tissue, particularly torn meniscus tissue during arthroscopic surgery, employs a repair tack of biodegradable material chosen to have a degradation time in excess of the required healing time for the tissue. The repair tack has a shaft portion with a longitudinal bore and a grip portion adapted for releasable engagement by a hollow applicator. In one embodiment the grip portion of the tack is a cross bar, at the proximal end of the shaft, which fits into an open-sided slot at the forward end of the applicator.
Abstract:
A method for repairing in vivo torn cartilaginous or other bodily tissue, particularly torn meniscus tissue during arthroscopic surgery, employs a repair tack of biodegradable material chosen to have a degradation time in excess of the required healing time for the tissue. The repair tack has a shaft portion with a longitudinal bore and a grip portion adapted for releasable engagement by a hollow applicator. In one embodiment the grip portion of the tack is a cross bar, at the proximal end of the shaft, which fits into an open-sided slot at the forward end of the applicator. A needle passes through the hollow applicator and tack bore to project from the distal end of the tack shaft. With the tack supported in the slot and the needle passing through the stem, the needle and tack can be inserted into the joint cavity through a portal in the skin or through an insertion cannula. The sharpened needle point is placed in contact with the torn tissue and force is applied to the holder and the needle to cause the needle and the tack to penetrate the tissue to a desired depth. The point of the needle is then withdrawn into the axial opening of the applicator and the cross bar is displaced from the slot, thereby leaving the tack firmly secured in the tissue.
Abstract:
An apparatus is disclosed for introducing a liquid within a material. The apparatus comprises a body member having an internal cavity for receiving a battery. An end member is secured to the body member for supporting a needle guide extending through the end member for slidably receiving a needle. A reciprocal coupling means interconnects the motor and the needle for reciprocating the needle relative to the end member upon rotation of the motor. A reservoir is in fluid communication with the needle for retaining the liquid therein and for enabling the liquid to flow along the needle. The reciprocating needle creates a plurality of perforations in the material enabling the liquid to flow along the needle to enter the perforations. The apparatus is suitable for introducing a liquid pigment into a skin tissue such as introducing a permanent eyeliner into an eyelid.