Patent ID: 11957878
Assignee: BATTELLE MEMORIAL INSTITUTE
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 11:
12. The method of claim 2 wherein potential compression energy in the combination torsion and compression spring decreases approximately linearly as a function of plunger motion; or
wherein, during a second half of the injection (either by time or by plunger motion) a percentage of potential torsion energy in the combination torsion and compression spring decreases at a rate faster than a percentage of potential linear energy; or
wherein, after an initial phase, the driving force increases rapidly by at least 10 N; or
wherein, after the initial phase, the driving force at least doubles or at least triples:
over a distance of 5 mm, or 2 mm, or less: or
between 0.1 to 3 mm of plunger motions: or
a time of 1 s or less or between 20 ms and 1 s; or
between 30 ms and 500 ms;

or any combination of these.