Pumpshand

Pumpshand is a term used to describe a hand-operated pumping mechanism intended for human-powered transfer of liquids. The design emphasizes portability and ergonomic operation, often featuring a compact cylindrical pump body connected to a tube network and valves.

In terms of design, Pumpshand variants range from palm-mounted pistons to finger-trigger pumps. Core components typically include a piston or diaphragm, one-way check valves, a sealable inlet and outlet, and a user-actuated trigger or lever. Materials are lightweight plastics or corrosion-resistant metals. Some models integrate into gloves or prosthetic devices to enable pumping without bulk equipment.

Operation: the user actuates the pump by squeezing the piston or pressing a lever, generating flow that draws fluid through the inlet valve and pushes it out through the outlet. Self-priming forms exist; pumps can be configured to provide a steady flow or pulsatile discharge, depending on valve geometry.

History and development: manual hand pumps have a long history in hydrology, agriculture, and medicine. The Pumpshand concept appears in modern designs that prioritize wearable form factors and field usability, with ongoing improvements in sealing, sanitation, and compatibility with microfluidic tubes.

Applications and considerations: used in field irrigation, first-aid kits for fluids administration, beverage dispensing in compact setups, and as a demonstration tool in education and microfluidics. Limitations include required user effort, limited volume per stroke, potential for contamination, and the need for clean handling.

See also: hand pump, syringe, pump, prosthetic hand.