A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
73/129
A61B 5/00 (2006.01) A61B 5/03 (2006.01)
Patent
CA 1114199
TISSUE PRESSURE MEASURING DEVICE ABSTRACT OF THE DISCLOSURE A tissue pressure measuring device comprising, a hollow needle and a conduit communicating with the needle at a distal end thereof, with the conduit having a lumen and including a transparent portion having a reference marking. The device has a syringe having a plunger, an outer wall defining a chamber, a barrel received in the chamber and defining a cavity to slidably receive the plunger in sealing engagement with an inner surface of the barrel and permit movement of the plunger between inner and outer positions of the plunger relative to the barrel. The chamber and cavity have a combined volume substantially greater than the volume of the cavity, and the plunger has reference indicia disposed along the plunger to determine the position of the plunger relative to a reference position on the syringe. The device has a valve assembly communicating with the conduit lumen and syringe chamber, with the valve assembly selectively establishing communication between the lumen and chamber, and establishing communication between the chamber and the atmos- phere while closing the lumen from the chamber.
343161
Layton Terry N.
Fetherstonhaugh & Co.
Kendall Company (the)
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