Abstract: A method of making thin-walled permeable tubing using air blown extrusion, and of using the tubing in a device which enables a substantial humidification or drying of patient breathing gases in the breathing lines for patient monitoring or anesthesia results in cost savings and increased efficiency.
Type:
Grant
Filed:
October 16, 2001
Date of Patent:
August 24, 2004
Assignee:
Perma Pure, Inc.
Inventors:
T. Paul Smith, David A. Leighty, Charles E. Dubois, Erik M. Anhorn
Abstract: Honing and polishing instrument especially intended for dental use and being provided with a rotatable shaft. A replaceable honing or polishing unit made of a flexible elastic material can be attached to the free end of the shaft. An undercut indent in the unit embraces a radial sleeve at the free end of the shaft. The shaft also has an end portion extending axially beyond the sleeve which is inserted in a corresponding bore at the bottom of the indent in the unit.