Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1997-07-08
2000-06-13
Coggins, Wynn Wood
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604174, 604715, 128DIG26, A61M 500
Patent
active
060743646
ABSTRACT:
This invention pertains to blood vessel cannulation devices and methods for sensing the location of a blood vessel. The blood vessel cannulation device preferably comprises a mounting assembly for securing the device to a patient in the vicinity of a blood vessel, a rotating assembly mounted to the mounting assembly, and a guide housing mounted to the rotating assembly. Sensing guides in the guide housing receive one or more sensors which sense the blood vessel. Rotating the rotating assembly, and traversing the guide housing, enable bringing the bottom ends of the sensing guides into alignment with the blood vessel, correspondingly also bringing a cannula guide, in the guide housing, into alignment with the blood vessel. Cannulation, is improved by the alignment of the bottom end of the cannula guide with respective bottom ends of the sensing guides. Some embodiments of the invention may be employed using only the guide housing and a cannula, including placing markings at first and second spaced locations on a blood vessel, aligning first and second sensing guides of the guide housing with the first and second markings, with the guide housing on the blood vessel of the patient, placing a cannula proximate the blood vessel of the patient at a cannula guide in the guide housing, and inserting the cannula into the blood vessel.
REFERENCES:
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patent: 3210816 (1965-10-01), Clemons
patent: 4212297 (1980-07-01), Johnson, Jr. et al.
patent: 4883053 (1989-11-01), Simon
patent: 4898178 (1990-02-01), Wedel
patent: 4955864 (1990-09-01), Hajduch
patent: 5167630 (1992-12-01), Paul
Coggins Wynn Wood
Gring N. Kent
Wilhelm Thomas D.
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