Apparatus and method for tissue removal
First Claim
1. Tissue removal apparatus comprising:
- a flexible drill shaft;
a cutting tip mounted on said shaft for cutting tissue;
means for transmitting motion to said shaft to move said cutting tip against the tissue to cut tissue fragments from the tissue; and
means for removing the tissue fragments along said shaft by suction to a location outside the body while cutting.
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0 Petitions
Accused Products
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.
511 Citations
35 Claims
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1. Tissue removal apparatus comprising:
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a flexible drill shaft;
a cutting tip mounted on said shaft for cutting tissue;
means for transmitting motion to said shaft to move said cutting tip against the tissue to cut tissue fragments from the tissue; and
means for removing the tissue fragments along said shaft by suction to a location outside the body while cutting. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 20, 21, 22, 23, 24, 27, 28, 29, 30)
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16. Tissue removal apparatus comprising:
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a flexible shaft;
a cutting tip mounted on said shaft for placement within a tissue mass;
means for transmitting rotary or oscillatory motion to said shaft to move said cutting tip against the tissue to cut tissue fragments from the tissue mass;
means for removing the tissue fragments along said shaft by suction to a location outside the body while cutting; and
means for collecting one or more selected components of the removed tissue fragments for implantation of the fragments into the body of the patient from whom they were removed.
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19. Tissue removal apparatus comprising:
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a flexible hollow drill shaft;
a cutting tip mounted on said shaft;
means for transmitting rotary or oscillatory motion to said drill shaft to move said cutting tip within a tissue mass to cut tissue fragments from the tissue mass;
means for removing the tissue fragments along said shaft by suction to a location outside the body while cutting; and
guide means for controlling the location of said cutting tip within the tissue mass.
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25. Tissue removal apparatus comprising:
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a flexible shaft for insertion inside a tissue mass;
a cutting tip mounted on said shaft for cutting the tissue;
means for transmitting motion to said shaft to move said cutting tip against the tissue to cut tissue fragments from the tissue mass;
guide means for controlling the location of said cutting tip within the tissue mass;
means for removing the tissue fragments along said shaft by suction to a location outside the body while cutting; and
means for collecting one or more selected components of the harvested tissue fragments for implantation of the fragments into the body of the patient from whom they were removed.
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26. A method comprising the steps of:
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placing within a tissue mass a flexible shaft having mounted thereon a cutting tip for cutting the tissue mass;
transmitting motion to said shaft to move said cutting tip against the tissue to cut tissue fragments from the tissue mass; and
removing the tissue fragments along the shaft by suction to a location outside the tissue mass while cutting the tissue.
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- 31. A method of grafting human tissue comprising the steps of obtaining a quantity of tissue fragments suitable for grafting, compressing the tissue fragments into a plug suitable for implantation, and securing the compressed tissue fragments in the graft location with a retainer.
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35. Tissue removal apparatus comprising a rotatable flexible drill shaft and a rotary cutting tip attached to said shaft for placement adjacent or within a tissue mass for cutting the tissue, said rotary cutting tip having first and second adjacent cutting edges spaced apart in the direction of rotation including a leading edge for grabbing the tissue to be cut and a trailing edge for cutting the tissue.
Specification