Apparatus and methods for detecting probe penetration of human i

Details Apparatus and methods for detecting probe penetration of human i Apparatus and methods for detecting probe penetration of human i

1985-10-09

1986-11-18

Pellegrino, Stephen C.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

128748, A61M 500

Patent

active

046233350

ABSTRACT:
A method for detecting probe penetration of human target tissue having predetermined internal pressure includes inserting a hollow probe into the human body towards the internal target tissue and gradually increasing pressure in a closed volume defined by the probe interior and a conduit communicating therewith until a moveable piston slideably resident within the conduit and having a passageway therethrough connecting the portion of the conduit interior communicating with the hollow probe with an orifice in a lateral surface of the moveable piston slideably contacting said conduit interior, moving in response to pressure within the conduit opposing predetermined bias force applied to the moveable piston, reaches a predetermined position, at which the lateral surface orifice of the moveable piston communicates with ambient air via a passageway through the wall of the conduit, corresponding to pressure in the closed volume equaling the predetermined internal pressure.
Apparatus for detecting probe penetration of human target tissue having predetermined internal pressure includes: an elongated hollow probe, a valve having first and second orifices with the first orifice communicating with the hollow probe, a conduit communicating with the second orifice of the valve, a piston movable resident within the conduit in response to conduit pressure, for limiting pressure within the conduit to the predetermined internal pressure and providing visible indication upon pressure within the conduit reaching the predetermined internal pressure and has a hand squeezable bulb communicating with the conduit intermediate the movable piston and the valve, for increasing pressure within the conduit and the probe until the movable piston limits pressure within the conduit to the predetermined pressure.

REFERENCES:
patent: 2866453 (1958-12-01), Jewett
patent: 3062202 (1962-11-01), Ayman et al.
patent: 3183722 (1965-05-01), Unger et al.
patent: 3581733 (1971-06-01), Grandjean
patent: 3610228 (1971-10-01), Temkin
patent: 3720201 (1973-03-01), Ramsey, III
patent: 3730168 (1973-05-01), McWhorter
patent: 3807389 (1974-04-01), Miller et al.
patent: 3863504 (1975-02-01), Borsanyi
patent: 3920002 (1975-11-01), Dye et al.
patent: 3934576 (1976-01-01), Danielsson
patent: 4192319 (1980-03-01), Hargens et al.
patent: 4217911 (1980-08-01), Layton
patent: 4252126 (1981-02-01), Mandl
patent: 4300572 (1981-11-01), Knighton
patent: 4535773 (1985-08-01), Yoon

Affiliated with

Also associated with

Rating

Apparatus and methods for detecting probe penetration of human i does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and methods for detecting probe penetration of human i, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and methods for detecting probe penetration of human i will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1615551