Abstract: A drive system for a pump includes a housing and a fluid displacer and a reciprocator configured to mechanically displace the fluid displacer through respective suction strokes. The housing and fluid displacer define an internal pressure chamber configured to be filled with a working fluid having a charge pressure. The internal pressure chamber is configured such that the working fluid exerts the charge pressure on the fluid displacer during both the suction stroke and a pressure stroke of the fluid displacer.

Abstract: The pressure-relieving finger-manipulated strip is a mechanical structure. The pressure-relieving finger-manipulated strip is configured for use with a patient. The pressure-relieving finger-manipulated strip is a relaxation inducing device. The pressure-relieving finger-manipulated strip is rubbed by the patient to induce relaxation. The pressure-relieving finger-manipulated strip comprises a sheeting structure and a grommet. The grommet mounts on the sheeting structure. The pressure-relieving finger-manipulated strip forms the structure that generates that induced the relaxation response for the patient. The grommet forms an anchor point that allows the pressure-relieving finger-manipulated strip to clip to an externally provided structure.