Apparatus and method for tissue removal

a tissue and apparatus technology, applied in the field of tissue removal and tissue grafting, can solve the problems that none of these features are available with the current straight line cutting device, and achieve the effects of reducing friction, reducing energy consumption, and reducing friction
US20020029055A1Inactive Publication Date: 2002-03-07BONUTTI SKELETAL INNOVATIONS +2
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
BONUTTI SKELETAL INNOVATIONS
Publication Date
2002-03-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

Percutaneous tissue removal apparatus comprises a flexible drill shaft, a cutting tip mounted on the shaft for placement adjacent a tissue mass for cutting the tissue, means for transmitting motion to the shaft to move the cutting tip against the tissue to cut tissue fragments from the tissue, and means for removing the tissue fragments along the shaft by suction to a location outside the tissue mass while cutting. The apparatus may include means 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. The harvested tissue fragments may be implanted in the donor patient's body.
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Description

[0001] 1. Technical Field

[0002] The present invention relates to the field of tissue removal and tissue grafting. More particularly, t he present invention relates to an apparatus and method for the percutaneous cutting and removal of selected portions of tissue from a patient and the possible harvesting and implantation of the tissue portion in the donor.

[0003] 2. Description of the Prior Art

[0004] There are various known methods and apparatus for the cutting and removal of tissue fragments from a human. Each of these, however, suffers from one or more deficiencies.

[0005] U.S. Pat. No. 4,832,683 shows an instrument for ultrasonic cutting of bones, with irrigation or suction. However, there is no suction while cutting, no removal of the cut bone or tissue, and no flexibility in the instrument.

[0006] U.S. Pat. No. 4,265,231 shows apparatus f or drilling a curved hole having a flexible shaft confined in a rigid tubular sheath, but which shows no removal of cut bone or tissue.

[0007] U....

Claims

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