360-degree flat-surface mechanical stop for lead connector...

Details 360-degree flat-surface mechanical stop for lead connector... 360-degree flat-surface mechanical stop for lead connector...

2006-03-21

2006-03-21

Bockelman, Mark (Department: 3766)

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

C607S036000, C411S393000, C439S814000, C403S362000

Reexamination Certificate

active

07016734

ABSTRACT:
A connector block and associated locking setscrew for an implantable electronic tissue stimulating device are designed to eliminate thread damage to the setscrew which is a cause of the setscrew becoming stuck in the connector block. The threaded bore in the connector that is adapted to receive the setscrew is provided with an undercut at the end of the threaded bore where the undercut provides an annular, 360-degree flat surface that is normal to the longitudinal axis of the setscrew receiving bore. The setscrew employed is designed to have a shoulder machined a predetermined distance below the terminus of the final thread by machining a reduced diameter portion on the distal end of the setscrew. Now, when the setscrew is inserted into its threaded bore, the shoulder on the setscrew and the flat surface on the undercut in the connector block meet, preventing any portion of the screw threads from extending beyond the internal threads formed in the setscrew receiving bore of the connector block.

REFERENCES:
patent: 4764132 (1988-08-01), Stutz, Jr.
patent: 5669790 (1997-09-01), Carson et al.
patent: 5989077 (1999-11-01), Mast et al.
patent: 6112120 (2000-08-01), Correas

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