초록 ▼

A percutaneous tissue removal apparatus having a flexible drill shaft, a cutting tip mounted on the shaft a power source for transmitting motion to the shaft to move the cutting tip against tissue and a suction source for removing tissue fragments along the shaft to a location outside the tissue mas

A percutaneous tissue removal apparatus having a flexible drill shaft, a cutting tip mounted on the shaft a power source for transmitting motion to the shaft to move the cutting tip against tissue and a suction source for removing tissue fragments along the shaft to a location outside the tissue mass while cutting. The apparatus may include a container for collecting one or more selected components of the harvested tissue fragments for implantation of the fragments preferably into the body of the patient from whom they were removed. Where the tissue to be cut is bone, a cutting tip is preferably made of a polymeric material which is softer than the cortical portion of the bone, although the cutting tip may be made of a ceramic or a composite material. A second flexible shaft may be provided either within or about the flexible drill shaft.

대표청구항 ▼

An apparatus for removing bone, cartilage, tendon and muscle tissue from a human body comprising: a flexible drill shaft strong enough to transmit forces needed to cut bone, cartilage, tendon and muscle tissue from a human body; a cutting tip suitable for cutting bone, cartilage, tendon and muscle t

An apparatus for removing bone, cartilage, tendon and muscle tissue from a human body comprising: a flexible drill shaft strong enough to transmit forces needed to cut bone, cartilage, tendon and muscle tissue from a human body; a cutting tip suitable for cutting bone, cartilage, tendon and muscle tissue, said cutting tip being mounted on a distal end portion of said flexible drill shaft for movement with said flexible drill shaft; drive means connected in force-transmitting relationship with said flexible drill shaft for transmitting to said flexible drill shaft force sufficient to move said cutting tip to cut bone, cartilage, tendon and muscle tissue fragments therefrom; and suction means connected with said flexible drill shaft for removing the cut tissue fragments along said flexible drill shaft by suction to a location outside the body while cutting bone, cartilage, tendon and muscle tissue with said cutting tip, said suction means including surfaces defining a suction passage co-axial with said flexible drill shaft and in fluid communication with said cutting tip through which tissue fragments are removed; wherein said flexible drill shaft is solid, said apparatus comprises a non-rotating sleeve extending around and along said flexible drill shaft, said non-rotating sleeve and said flexible drill shaft defining said suction passage therebetween, and said drive means causes said flexible drill shaft and said cutting tip to rotate.