EXPANDABLE ROTATING DEVICE AND METHOD FOR TISSUE ASPIRATION
First Claim
1. A device for removing material from a body, comprising:
- a drive shaft comprising a proximal section, a distal section and a longitudinal shaft axis therebetween;
a motor coupled to the proximal section of the drive shaft; and
at least one tissue disrupting member comprising a proximal section and a distal section and having a collapsed configuration and a deployed configuration;
wherein the proximal section of the tissue disrupting member is coupled to the distal section of the drive shaft at a proximal coupling zone, and wherein the collapsed configuration of the tissue disrupting member exerts greater bending stress on the proximal end of the tissue disrupting member than the deployed configuration.
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Accused Products
Abstract
An apparatus and method for removing tissue and/or other material from a patient includes a shaft and a tissue disrupting mechanism operatively coupled to the shaft. The shaft may be coupled to a handpiece or a robotic or remote-controlled system. The mechanism may comprise a rotatable or other movable element having a distal portion with fixed or adjustable radial dimensions. The mechanism may have one or more tissue cutting, chopping, grinding, emulsifying or disrupting features with an adjustable outer diameter for removing substantial tissues. The apparatus may be configured to urge or draw substantial material into the device upon rotation or other movement of the shaft and/or tissue, and may optionally be coupled to sources of suction or aspiration. A radiofrequency or other energy source is optionally included for tissue ablation or other tissue remodeling effects, and/or to enhance coagulation.
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Citations
39 Claims
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1. A device for removing material from a body, comprising:
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a drive shaft comprising a proximal section, a distal section and a longitudinal shaft axis therebetween; a motor coupled to the proximal section of the drive shaft; and at least one tissue disrupting member comprising a proximal section and a distal section and having a collapsed configuration and a deployed configuration; wherein the proximal section of the tissue disrupting member is coupled to the distal section of the drive shaft at a proximal coupling zone, and wherein the collapsed configuration of the tissue disrupting member exerts greater bending stress on the proximal end of the tissue disrupting member than the deployed configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method of removing tissue, comprising:
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providing a tissue disrupting device comprising a drive shaft and a plurality of tissue disrupting members coupled to the drive shaft at a coupling zone; exerting a greater stress on the plurality of non-linear tissue disrupting members at a distal stress zone that is distal to the coupling zone and a lesser stress at a proximal stress zone located between the coupling zone and the distal stress zone to restrain the tissue disrupting device; inserting the restrained tissue disrupting device into a body; positioning the restrained tissue disrupting device about a target area in the body; reducing the greater stress at the distal stress zone of the plurality of non-linear tissue disrupting members; and actuating the plurality of tissue disrupting members to disrupt tissue at the target area. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37)
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38. A method of manufacturing a disrupting device, comprising:
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providing a tubular body comprising a proximal end, a distal end, and a midsection therebetween; creating a plurality of struts with disrupting edges in the midsection of the tubular body by forming a plurality of slots between the proximal and distal ends of the tubular body; shaping the midsection of the tubular body in a radially outward direction without straining the tubular body by more than 8%; heat annealing the tubular body to reduce the strain; reshaping the heat annealed midsection in a radially outward direction without straining the tubular body by more than 8%; and heat annealing the reshaped tubular body to reduce the strain. - View Dependent Claims (39)
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Specification