Letitia Geer was born in 1852 in New York. She invented and patented a one-hand operated syringe in 1899 that forms the basis for modern medical syringes. Her patent described a syringe with a cylinder to hold medication, a piston to push it in and out, and a handle within reach of fingers to allow one-handed operation.
2. letita geer
Letitia Mumford Geer born in 1852 in new york,was an inventor who patented
the one-hand operated syringe that is the basis for most modern medical
syringes.The patent was granted in 1899.
3. The Syringe
He filed a patent application describing a medical syringe, patent that le was granted in 1899.The
patent publication number ' US622848A ' describes a medical syringe which includes a cylinder, a
piston, a handle and a filter.The cylinder is adapted to be filled with the drug and the piston is
adapted to be operated in and out of the cylinder. The handle is in the reach of the fingers of the
hand in extreme positions, thus allowing a hand to hold and operate the syringe.