Fluid measurement device

In a blood collection and measurement device which comprises a balance bar having a first end and a second end, a pivotal mounting means adjacent its midsection, and with a means for attaching a blood collection container to said first end and a counterweight means operatively attached to said second end and having opposed flexible tube constricting means positioned on said balance bar and on a mount to which said balance bar is pivotally connected, the improvement comprising a hollow channel contained within said balance bar along the length thereof and containing mobile weight means which travel within said channel along a path traversing said pivotal mounting means to thereby accentuate the rotation speed of said balance bar as said first end and second end rotate about said pivotal mount.

A device for the collection and measurement of blood for use in conjunction with a blood container and flexible tubing leading thereto and providing for automatic shut off at a predetermined quantity of collected blood comprising a cylindrical hollow balance bar, having a first closed end and a second closed end, said balance bar extending through a balance bar mounting member which is pivotally attached to an assembly comprising a first rotatably adjustable clamping means, and a second fixed clamping means comprising a means for rotatable attachment for said first rotatably adjustable clamping means, and further comprising a cylindrical adjustable counter weight threadably attached to the first end of said balance bar, spherical weights disposed within said hollow balance bar, a means for attaching a hanging blood container affixed to said second end of the balance bar, opposing constricting means comprising two pegs for holding flexible tubing in place affixed perpendicularly to the balance bar pivoting face of said first rotatably adjustable clamping means and a triangular extension of said balance bar mounting means which upon rotation of said balance bar intersects the point at which the flexible tubing is held by said pegs, and a bubble vial level means affixed to said balance bar mounting means.

In a fluid dispensing and measurement device which comprises a balance bar having a first end and a second end, a pivotal mounting means adjacent its midsection, and with a means for attaching a fluid dispensing container to said first end and a counterweight means operatively attached to said second end, the improvement comprising a hollow channel contained within said balance bar along the length thereof and containing mobile weight means which travel within said channel along a path traversing said pivotal mounting means to thereby accentuate the rotation speed of said balance bar as said first end and second end rotate about said pivotal mount.