George Oliver Doherty
Physician at Riv Rd, Missoula, MT
License number
Colorado 11816
Issued Date
Feb 1, 1951
Renew Date
Dec 31, 1978
Expiration Date
Dec 31, 1978
Type
Physician
Address
Address
2301 River Rd, Missoula, MT 59801
Professional information
Outside-The-Needle Catheter Device With Needle Housing
US Patent:
4160450, Jul 10, 1979
Filed:
Jul 15, 1977
Appl. No.:
5/815806
Inventors:
George O. Doherty - Missoula MT
International Classification:
A61M 500
US Classification:
1282144
Abstract:
A catheter device, comprising a venipuncture needle or stylet whose shank extends through the bore of a catheter or cannula and has a sharpened tip projecting slightly therebeyond in an extended position of the needle to provide an outside-the-needle catheter unit for venipuncture and for insertion of the catheter in a vein in largely conventional manner, and a housing adapted to define an elongate liquid flow chamber. Such housing is connected, liquid-tight, at one end to the catheter and is adapted to protectively house the sharpened tip of the needle following venipuncture. The housing itself is liquid-tight, except for an opening at its other end through which extends tubing for the supply of a venoclysis liquid. The other end of the needle may be provided with a hub formed as a stopper for fitting tightly in a seat formed in the housing immediately in advance of the opening, or may be provided with a hub that is attached to the supply tubing at the opening. In the latter instance, the housing is collapsible and attached, liquid-tight, to the supply tubing so the catheter can be advanced into the vein relative to the needle.