Instrument for cutting tissues in surgery
First Claim
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1. A surgical instrument for cutting tissue comprising:
- (a) motor means;
(b) a cutting tool comprising of flexible arcuate blade extending along a longitudinal direction, wherein a portion of said blade is exposed along a portion of said longitudinal direction;
(c) means for coupling said motor means to said cutting tool wherein said motor means and said coupling means comprise means for reciprocating said blade in said longitudinal direction(d) a sheath surrounding said cutting tool;
(e) two rods for linking the coupling means and the cutting tool;
wherein said sheath has an aperture therein to expose said portion of said blade, wherein guiding of the blade is assured by the sheath.
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Abstract
The instrument comprises a motor, a means for coupling to the motor, two rods producing a link between the coupling means and the cutting tool. It also comprises a cutting tool and a sheath surrounding the cutting tool; an aperture is situated in the sheath to allow the cutting tool to be made level. The cutting tool is a guided flexible blade curved at the end, and this blade is driven by a backward and forward movement. The instrument can be used for cutting bony or cartilagineous tissues, or for cutting softer tissues, according to the shape of the sheath.
145 Citations
17 Claims
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1. A surgical instrument for cutting tissue comprising:
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(a) motor means; (b) a cutting tool comprising of flexible arcuate blade extending along a longitudinal direction, wherein a portion of said blade is exposed along a portion of said longitudinal direction; (c) means for coupling said motor means to said cutting tool wherein said motor means and said coupling means comprise means for reciprocating said blade in said longitudinal direction (d) a sheath surrounding said cutting tool; (e) two rods for linking the coupling means and the cutting tool; wherein said sheath has an aperture therein to expose said portion of said blade, wherein guiding of the blade is assured by the sheath. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 14, 17)
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2. An instrument for cutting tissues in surgery comprising:
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(a) a motor means; (b) a cutting tool comprising an arcuate blade having first and second ends; (c) means for pulling said first and in a first longitudinal direction; and (d) means for pushing said second end in said first longitudinal direction, wherein said motor means comprises means for actuating said pulling and pushing means, said means for pulling further comprising means for pushing said first and in a second longitudinal direction opposite from said first longitudinal direction, wherein said pushing means comprises means for pulling said second end in said second longitudinal direction; (e) a sheath surrounding the cutting tool, wherein said pushing and pulling means each comprise a rod linking the motor means and the cutting tool, wherein said sheath has an aperture therein to expose a portion of said blade. - View Dependent Claims (11, 12, 13, 15, 16)
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Specification