Patent ID: 11877938
Assignee: THE UNITED STATES GOVERNMENT AS REPRESENTED BY THE DEPARTMENT OF VETERANS AFFAIRS
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 8:
9. A pump system comprising:
a mechanical pump;
the mechanical pump being connected and providing vacuum for use in engagement between a prosthetic device and a residual limb, wherein the vacuum provided is from 15 mmHg to 25 mmHg;
the mechanical pump further comprising:
an upper compression member coupled to a lower compression member;
a diaphragm disposed between the upper and lower compression members, wherein the diaphragm and the lower compression member cooperate to define a void space therebetween; and
coupling elements that engage and couple together the upper and lower compression members, wherein the lower compression member comprises a first one-way valve and a second one-way valve,
wherein the upper and lower compression members and the diaphragm are configured so that relative movement of the upper and lower compression members toward each other compresses the diaphragm to evacuate air from the void space between the diaphragm and the second compression member.