Filling device for use in manufacturing of gel filled prostheses

Prosthesis filling apparatus for filling a prosthesis shell with a viscoelastic material comprising:

• a cannula having first and second ports for insertion through a fill port on a prosthesis shell to provide communication with an interior of the prosthesis shell through the first and second ports;
• a source of filling material under pressure, the filling material being isolated from air;
• a low shear pump coupled to the source of filling material;
• a first flexible hose coupled between the low shear pump and the first port on the cannula;
• a vacuum source;
• a second flexible hose coupled between the vacuum pump and the second port on the cannula, portions of the first and second hoses being adjacent the scale, said portions being substantially horizontal;
• a weight measuring scale;
• the cannula being positioned on the scale so that the scale will respond to the change in weight of a prosthesis, the fill port of which is penetrated by the cannula, the first and second flexible hoses being configured to not interfere with the free operation of the scale.