Neurosonic aspirator
First Claim
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1. Apparatus for removing an exposed layer of soft tissue such as neurological-type tissue, said apparatus comprising:
- a tool tip having a longitudinal axis extending from one end of said tool tip; and
a connecting member extending from said tool tip for connecting said tool tip to ultrasonic means such that said ultrasonic means ultrasonically vibrates said tool tip flexurally and said one end of said tool tip substantially entirely transversely to said longitudinal axis of said tool tip, whereby said transversely vibrating end of said tool tip can be swept back and forth across said exposed layer of soft tissue in a plane generally parallel to said transverse vibration of said tool tip end to comminute and thereby remove said exposed layer of soft tissue.
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Abstract
Apparatus for use in surgically removing tumorous neurological tissue comprises a handpiece in which a tool tip vibrating transversely to its long axis in the ultrasonic range, is mounted an irrigation fluid outlet for introducing fluid adjacent the tool tip to flush the operative site, and a fluid inlet adjacent the tool tip for withdrawing a fluid mixture from the site.
172 Citations
12 Claims
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1. Apparatus for removing an exposed layer of soft tissue such as neurological-type tissue, said apparatus comprising:
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a tool tip having a longitudinal axis extending from one end of said tool tip; and a connecting member extending from said tool tip for connecting said tool tip to ultrasonic means such that said ultrasonic means ultrasonically vibrates said tool tip flexurally and said one end of said tool tip substantially entirely transversely to said longitudinal axis of said tool tip, whereby said transversely vibrating end of said tool tip can be swept back and forth across said exposed layer of soft tissue in a plane generally parallel to said transverse vibration of said tool tip end to comminute and thereby remove said exposed layer of soft tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. Apparatus for removing an exposed layer of soft tissue such as neurological-type tissue, said apparatus comprising:
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a hollow tool tip having a longitudinal axis extending from one end of said tool tip; irrigation and aspiration means for independently irrigating a site on said exposed layer of soft tissue when operatively swept by said end of said tool tip and aspirating said site to withdraw fluid and comminuted tissue mixed therewith whereby better vision of said site is obtained, one of said irrigation and aspiration means comprising said hollow tool tip; and a connecting member having a longitudinal axis extending at an angle from said longitudinal axis of said tool tip for connecting said tool tip to ultrasonic means for ultrasonically vibrating said tool tip flexurally and at least said one end of said tool tip substantially entirely transversely to said longitudinal axis of said tool tip for comminuting said exposed layer of soft tissue when swept by said end of said tool tip. - View Dependent Claims (10)
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11. For use in apparatus for removing an exposed layer of tissue such as neurological-type tissue and having ultrasonic means for producing ultrasonic vibrations, a tool comprising:
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a tool tip having a longitudinal axis extending from one end of said tool tip; and connecting member means having a longitudinal axis extending from said tool tip for connecting said tool tip to said ultrasonic means such that said ultrasonic means vibrates said connecting member means along said longitudinal axis thereof, said connecting member means cooperating with said tool tip for converting said longitudinal vibrations of said connecting member means into flexural vibrations of said tool tip and, at said end of said tool tip, vibrations substantially entirely transverse to said longitudinal axis of said tool tip, whereby said transversely vibrating end of said tool tip can be swept across said exposed layer of soft tissue in a plane generally parallel to said transverse vibration of said tool tip to comminute and thereby remove said exposed layer. - View Dependent Claims (12)
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Specification