Infrared aided method and apparatus for venous examination

Details Infrared aided method and apparatus for venous examination Infrared aided method and apparatus for venous examination

1994-09-29

1996-05-21

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

2503418, 250574, 128664, G01J 350

Patent

active

055192084

ABSTRACT:
A method and apparatus for gaining intravenous access including a source of radiation for irradiating an area of the patient wherein the radiation has a wavelength such that the radiation is absorbed in areas containing veins and reflected in all other areas thereby forming a view which is seen through a screen to be the area where venous structure appears as dark lines thereby enabling a user to position the tip of a hypodermic needle at an appropriate location for drawing blood. In one arrangement, the apparatus is mounted on the head of the user. In another arrangement the device is mounted on a floor stand. In another embodiment, the apparatus is equipped with an image intensifier. In another embodiment, a mirror is provided enabling the user to view the selected area and the image simultaneously.

REFERENCES:
patent: 3514174 (1970-05-01), Gans et al.
patent: 4817622 (1989-04-01), Pennypacker et al.
patent: 4975581 (1990-12-01), Robinson et al.
patent: 5204774 (1993-04-01), Owen et al.
patent: 5233465 (1993-08-01), Wheatley et al.
patent: 5248874 (1993-09-01), Raverdy

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