Ultrasonic cutting blade with cooling
First Claim
1. An ultrasonic surgical blade comprising a blade body and a shank fixed at one end to said blade body and operatively connectable at an opposite end to a source of ultrasonic vibrations, said blade body having a smooth continuous cutting edge including at least one linear section, said shank being provided with a bore extending parallel to a longitudinal axis of the surgical blade for the conveyance of cooling fluid to said blade body, said blade body being provided with an elongate through-slot extending substantially parallel to said axis, said through-slot communicating at one end with said bore, said through-slot extending substantially parallel to said linear section and substantially along an entire length thereof for delivering cooling fluid to said linear section effectively along said entire length.
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Accused Products
Abstract
An ultrasonic surgical blade has a blade body with a smooth continuous cutting edge and a shank connected at one end to the blade body and operatively connectable at an opposite end to a source of ultrasonic vibrations. The shank is provided with an axially extending bore for the conveyance of cooling fluid to the cutting edge, while the blade body is provided with an axially extending through-slot communicating at one end with the bore. The blade body is preferably provided at an end opposite the shank with a recess communicating, with the bore for distributing fluid from the slot towards the cutting edge. The recess preferably has a configuration which parallels at least a portion of the cutting edge. Where the cutting edge is circular and the blade body has a planar surface between the fluid distribution guide surface and the cutting edge, for instance, the recess has a fluid distribution surface inclined with respect to the planar blade surface and extending along a circular arc.
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Citations
20 Claims
- 1. An ultrasonic surgical blade comprising a blade body and a shank fixed at one end to said blade body and operatively connectable at an opposite end to a source of ultrasonic vibrations, said blade body having a smooth continuous cutting edge including at least one linear section, said shank being provided with a bore extending parallel to a longitudinal axis of the surgical blade for the conveyance of cooling fluid to said blade body, said blade body being provided with an elongate through-slot extending substantially parallel to said axis, said through-slot communicating at one end with said bore, said through-slot extending substantially parallel to said linear section and substantially along an entire length thereof for delivering cooling fluid to said linear section effectively along said entire length.
- 11. An ultrasonic surgical blade comprising a blade body and a shank connected at one end to said blade body and operatively connectable at an opposite end to a source of ultrasonic vibrations, said blade body being substantially flatter than said shank, said blade body having a cutting edge, said shank being provided with a passageway or bore for the conveyance of cooling fluid to said blade body, said blade body being provided with exactly one open fluid distribution channel communicating with said passageway or bore for distributing fluid therefrom along at least one lateral surface of said blade body when said blade body is disposed in tissues at a surgical site during a cutting operation, said shank having a longitudinal axis, said passageway or bore extending parallel to said axis, said fluid distribution channel being elongate and having a length dimension and a width dimension, said length dimension being substantially parallel to said axis, said fluid distribution channel being open along the entire length dimension.
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16. An ultrasonic surgical blade comprising a blade body and a shank fixed at one end to said blade body and operatively connectable at an opposite end to a source of ultrasonic vibrations, said blade body having a smooth continuous cutting edge, said shank being provided with a bore extending parallel to a longitudinal axis of the surgical blade for the conveyance of cooling fluid to said blade body, said blade body being provided with an elongate through-slot extending substantially parallel to said axis, said through-slot communicating at one end with said bore, said blade body being provided at an end opposite said shank with an arcuate recess communicating with said bore and extending around said through-slot at an end opposite said bore, for distributing fluid from said through-slot towards said cutting edge.
- 17. An ultrasonic surgical blade comprising a blade body and a shank fixed at one end to said blade body and operatively connectable at an opposite end to a source of ultrasonic vibrations, said blade body having a smooth continuous cutting edge, said shank being provided with exactly one bore extending parallel to a longitudinal axis of the surgical blade for the conveyance of cooling fluid to said blade body, said blade body being provided with exactly one elongate through-slot extending parallel to said longitudinal axis and communicating at one end with said bore for delivering cooling fluid to said cutting edge.
Specification