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, said shank being provided with a bore for the conveyance of cooling fluid to said cutting edge, said blade body being provided with an elongate through-slot communicating at one end with said bore, said through-slot being provided with at least one web section bridging opposite sides of said through-slot so as to subdivide same into segments communicating with one another over said web section.
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Accused Products
Abstract
At 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 at an axially extending bore for the conveyance of cooling fluid to the cutting edge, while the blade body is provided with at 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.
426 Citations
22 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, said shank being provided with a bore for the conveyance of cooling fluid to said cutting edge, said blade body being provided with an elongate through-slot communicating at one end with said bore, said through-slot being provided with at least one web section bridging opposite sides of said through-slot so as to subdivide same into segments communicating with one another over said web section.
- 15. 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 having a cutting edge, said shank being provided with a passageway or bore for the conveyance of cooling fluid to said cutting edge, said blade body being provided with an 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 channel including a plurality of through-slot sections traversing said blade body and communicating with one another over at least one web section defining a groove or recess for conduction of fluid from one of said through-slot sections to another thereof.
- 20. An ultrasonic surgical blade comprising a planar 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 having a cutting edge and a pair of opposing major surfaces bounded in part by said cutting edge, said shank being provided with a passageway or bore for the conveyance of cooling fluid to said cutting edge, said blade body being provided with a fluid distribution guide surface communicating with said passageway or bore for distributing fluid from said passageway or bore towards said cutting edge over at least one of said major surfaces, said guide surface being a conical or tapered cylindrical section spaced from said cutting edge by a portion of said one of said major surfaces.
Specification