Tonometer

Details Tonometer Tonometer

1996-05-23

1998-11-17

Lacyk, John P.

Surgery

Diagnostic testing

Testing aqueous humor pressure or related condition

600404, 600405, A61B 316

Patent

active

058368736

ABSTRACT:
A tonometer, for determining intraocular pressure, has a body, which can be a transparent, substantially tubular body. A plunger is located within the body and a coil spring acts between the body and the plunger. A marker member is frictionally retained within the body and is displaced relative to an external scale on the body. In use, the tonometer is brought up against the eyelid of a closed eye and the body displaced relative to the head of the plunger, until the pressure is sufficient to create a pressure phosphene. The device is then removed and the displacement of the marker member, indicative of the applied pressure is read. This reading corresponds to the intraocular pressure. The device may include a return member for returning the marker member to a zero or rest position.

REFERENCES:
patent: 1637421 (1927-08-01), Lipschutz
patent: 1661718 (1928-03-01), Davis
patent: 2656715 (1953-10-01), Tolman
patent: 2882891 (1959-04-01), Husted
patent: 3992926 (1976-11-01), Berryhill
patent: 4505278 (1985-03-01), Alban
patent: 5176139 (1993-01-01), Fedorov et al.
patent: 5197473 (1993-03-01), Fedorov et al.

Affiliated with

Also associated with

Rating

Tonometer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tonometer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tonometer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-879034