Ultrasonic surgical instrument

• US 3,896,811 A
• Filed: 08/30/1973
• Issued: 07/29/1975
• Est. Priority Date: 08/31/1972
• Status: Expired due to Term

• Current Assignee: Karl Storz
• Original Assignee: Karl Storz
• Inventors: Storz, Karl
• Primary Examiner(s): Pace, Channing L.
• Application Number:
  US05/393,198
• Time in Patent Office: 698 Days
• Field of Search: 128/24A,328
• US Class Current: 606/128
• CPC Class Codes: A61B 17/22012 in direct contact with, or very close to, the obstruction or concrement for removing obstructions in blood vessels by laser A61B18/245
• CPC Class Codes: A61B 2017/320084 Irrigation sleeves

Abstract

An ultrasonic surgical instrument comprising a probe and a transducer wherein at least the probe and the point of connection between the probe and the transducer are enveloped by a jacket which is spaced so as to provide an air gap substantially surrounding the probe and the transducer.

Claims

1. An ultrasonic surgical instrument adapted to be mounted within an endoscope for inserting within an internal body organ, comprising an elongated probe, a transducer for inducing oscillation therein, means for connecting said transducer to one end of said probe, and a unitary jacket surrounding said probe and said transducer, said jacket being in cross section larger than said probe and transducer and having a pair of axially spaced radially inwardly directed bearing means for supporting said jacket on said transducer and on the probe at the end opposite said transducer spaced uniformly from said probe and said transducer to provide a radial air gap enveloping said probe and transducer.

2. The instrument according to claim 1, wherein said bearing means provide point contact with said probe.

3. The instrument according to claim 1, wherein said bearing means provide line contact with said probe.

4. The instrument according to claim 1, wherein said jacket extends to fully envelope said transducer.