Reciprocating rotary arthroscopic surgical instrument
DC CAFCFirst Claim
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1. A surgical instrument, comprising:
- a cutting member including an implement for cutting tissue; and
a drive coupled to the cutting member to simultaneously rotate, translate, and reciprocate the cutting member in response to only a rotational force applied to the drive in a single direction and to cut tissue during simultaneous rotation and translation of the cutting member;
wherein the drive includes a drive member attached to the cutting member, the drive member including a helical groove, and the drive includes a translation piece disposed in the groove such that rotary driving of the drive member results in simultaneous reciprocation of the drive member relative to the translation piece.
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Abstract
A surgical instrument includes a cutting member with an implement for cutting tissue, and a drive coupled to the cutting member to simultaneously rotate and translate the cutting member in response to a force applied to the drive. A method of cutting tissue includes positioning an outer member such that tissue is located within the outer member, engaging the tissue with an inner member, and simultaneously rotating and translating the inner member to cut the tissue. A tangential cutting force is applied to the tissue with the inner member to mechanically cut the tissue. The inner member is mechanically driven to undergo simultaneous rotation and translation.
257 Citations
35 Claims
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1. A surgical instrument, comprising:
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a cutting member including an implement for cutting tissue; and a drive coupled to the cutting member to simultaneously rotate, translate, and reciprocate the cutting member in response to only a rotational force applied to the drive in a single direction and to cut tissue during simultaneous rotation and translation of the cutting member; wherein the drive includes a drive member attached to the cutting member, the drive member including a helical groove, and the drive includes a translation piece disposed in the groove such that rotary driving of the drive member results in simultaneous reciprocation of the drive member relative to the translation piece. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A surgical instrument, comprising:
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an outer tubular member including a cutting window disposed proximate to a tip of the outer tubular member, the cutting window including a saddle-shaped distal end; a cutting member including an implement for cutting tissue, the cutting member being received within the outer tubular member; and a drive coupled to the cutting member to simultaneously rotate, translate, and reciprocate the cutting member in response to only a rotational force applied to the drive. - View Dependent Claims (24)
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25. A surgical instrument, comprising:
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a cutting member including an implement for cutting tissue; and a drive coupled to the cutting member to simultaneously rotate, translate, and reciprocate the cutting member in response to only a rotational force applied to the drive in a single direction and to cut tissue during simultaneous rotation and translation of the cutting member; wherein the drive includes a drive member attached to the cutting member, the drive member including a helical groove, and the drive includes an inner drive hub coupled to the drive member such that the drive member rotates with the inner drive hub while being free to translate relative to the inner drive hub. - View Dependent Claims (26)
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27. A surgical instrument, comprising:
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a cutting member including an implement for cutting tissue; and a drive coupled to the cutting member to simultaneously rotate, translate, and reciprocate the cutting member in response to only a rotational force applied to the drive in a single direction and to cut tissue during simultaneous rotation and translation of the cutting member; wherein the drive includes a drive member attached to the cutting member, the drive member including a helical groove having a left-hand threaded helical channel.
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28. A surgical instrument, comprising:
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a cutting member including an implement for cutting tissue; and a drive coupled to the cutting member to simultaneously rotate, translate, and reciprocate the cutting member in response to only a rotational force applied to the drive in a single direction and to cut tissue during simultaneous rotation and translation of the cutting member; wherein the drive includes a drive member attached to the cutting member, the drive member including a helical groove having two helical channels, a first helical channel being a left-hand threaded helical channel and a second helical channel being a right-hand threaded helical channel. - View Dependent Claims (29, 30, 31)
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32. A surgical instrument, comprising:
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a cutting member including an implement for cutting tissue; a drive coupled to the cutting member to simultaneously rotate, translate, and reciprocate the cutting member in response to only a rotational force applied to the drive in a single direction and to cut tissue during simultaneous rotation and translation of the cutting member; and an outer tubular member, the cutting member being received within the outer tubular member, the outer tubular member including a cutting window disposed proximate to a tip of the outer tubular member. - View Dependent Claims (33, 34, 35)
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Specification