Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1992-10-13
1997-10-21
Gorski, Joseph M.
Metal working
Method of mechanical manufacture
Assembling or joining
29450, B23P 1102
Patent
active
056782969
ABSTRACT:
A hollow lumen cable is formed by helically winding inner and outer coils with the helices of each coil being in an abutting relationship and the outer coil inner diameter being less than the outer, peripheral, diameter of the inner coil. Preferably, each coil is multifilar. After the coils are wound, an unwinding force is applied to the outer coils and the inner coils is inserted into the outer coils to have its winding inclined opposite to that of the outer coil; and thence, the outer coils is allowed to contract to form an interference fit with the inner coil. The cable may be incorporated as part of various medical systems e.g., implantable pumps or other rotatable medical apparatus. The cable is bendable about the tight radii, has a high torque transfer, a small outer diameter, and a hollow lumen through which fluid, wires or medical devices may pass.
REFERENCES:
patent: 1228439 (1917-06-01), Hotchkiss
patent: 2955592 (1960-10-01), MacLean
patent: 5373619 (1994-12-01), Fleischhacker et al.
Fleischhacker Mark G.
Fleischhacker, Jr. Joseph F.
Hanson Donald W.
Hargreaves Thomas E.
Frenchick Grady J.
Gorski Joseph M.
Lake Region Manufacturing, Inc.
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