Apparatus and method for minimally invasive surgery using rotational cutting tool
First Claim
Patent Images
1. A surgical instrument comprising:
- a tube having a distal end and a proximal end and defining a lumen therethrough, said distal end including a cutting edge extending longitudinally therefrom;
a shaft within said lumen of said tube, said shaft having a distal end and a proximal end, said distal end of said shaft including a blade, one of said shaft and said tube being rotatable with respect to the other such that said blade cooperates with said cutting edge to cur body tissue between said cutting edge and said blade; and
a handle coupled to a proximal end of said tube and having an opening therethrough in communication with said lumen of said tube,wherein said lumen of said tube has a dimension suitable to accommodate, in addition to the shaft, an auxiliary instrument inserted through the opening in the handle.
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Abstract
An apparatus and method for minimally invasive surgery using a cutting tool with rotational cutting edges. The surgical instrument includes a tube having a distal end and a cutting edge at the distal end. A handle is attached to the proximal end of the tube. Within the tube is a shaft having a longitudinally extending blade at its distal end that is adjacent to the distal end of the tube. The blade is revolvable about the longitudinal axis of the instrument to provide rotational cutting action. One or both of the blade and the cutting edge on the tube can be electrically energized to provide for electrocauterization of the body tissue being cut.
450 Citations
28 Claims
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1. A surgical instrument comprising:
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a tube having a distal end and a proximal end and defining a lumen therethrough, said distal end including a cutting edge extending longitudinally therefrom; a shaft within said lumen of said tube, said shaft having a distal end and a proximal end, said distal end of said shaft including a blade, one of said shaft and said tube being rotatable with respect to the other such that said blade cooperates with said cutting edge to cur body tissue between said cutting edge and said blade; and a handle coupled to a proximal end of said tube and having an opening therethrough in communication with said lumen of said tube, wherein said lumen of said tube has a dimension suitable to accommodate, in addition to the shaft, an auxiliary instrument inserted through the opening in the handle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A surgical instrument comprising:
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a handle comprising a longitudinal dimension defining a lumen therethrough; a tube extending from and coupled to said handle, said tube having a distal end and a cutting edge extending longitudinally at said distal end, said tube having a proximal end associated with said handle; and a tubular shaft defining a lumen coaxial with said tube, said shaft rotatably disposed within said tube, said shaft having a proximal end adjacent said handle and a distal end adjacent said distal end of said tube, said shaft having a cutting edge at its distal end, wherein one of said cutting edge on said shaft and said cutting edge on said tube is adapted to be electrically energized, wherein said cutting edge on said shaft and said cutting edge on said tube are positioned relative to one another to cooperate to cut body tissue through a rotation of said tubular shaft, and wherein said lumen of said handle is aligned with said lumen of said tubular shaft such that an auxiliary instrument may be inserted at a proximal end of said handle and through said lumen of said handle and said lumen of said tubular shaft. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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25. A surgical instrument comprising:
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a handle comprising a longitudinal dimension defining a lumen; a tube having a distal end and an outer blade extending from said distal end, said tube having a proximal end associated with said handle; and a shaft disposed within said tube, said shaft having a distal end adjacent said distal end of said tube, said shaft having an inner blade extending from said distal end, said shaft having a proximal end extending into said handle, wherein said inner blade and said outer blade are adapted to be electrically energized and positioned to cooperate to cut body tissue through a rotation of one of said tube and said shaft;
wherein said tube has a first longitudinal axis and said shaft has a second longitudinal axis displace from said first longitudinal axis. - View Dependent Claims (26)
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27. A method for cutting body tissue, the method comprising:
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inserting a surgical instrument comprising a tube having a distal end, a proximal end, a longitudinal axis between said distal and proximal ends, and a cutting edge at said distal end of said tube, said instrument further including a shaft having a distal end, a proximal end, and a blade at said distal end of said shaft, said shaft being rotatably disposed within said tube such that said cutting edge and said blade are rotatably engageable; inserting an auxiliary instrument through the surgical instrument; aligning the body tissue to be cut between said cutting edge and said blade; and rotating at least one of said tube and said shaft about said longitudinal axis such that said cutting edge and said blade engage to cut the body tissue. - View Dependent Claims (28)
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Specification