Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical energy applicator
Patent
1993-01-05
1994-04-05
Kamm, William E.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical energy applicator
A61N 105
Patent
active
053001087
ABSTRACT:
An active fixation lead assembly including a dual-pitch screw mechanism and a free spinning mechanism, which provides an improved capability for firmly engaging a lead tip upon heart tissue while avoiding damage to the tissue due to overtorquing of the lead. The dual-pitch screw mechanism employs an extendable coupling screw, firmly attached to a helical fixation coil. The thread pitch of the extendable coupling screw is greater than the thread pitch of the helical fixation coil so that the coil portion will move through tissue faster per revolution than the coupling screw, thereby embracing the tissue more tightly against the lead and improving the electrical connection between the tissue and the electrode. Generally, the free spinning mechanism allows the fixation coil to rotate freely after the fixation coil has been fully extended. More particularly, the free spinning mechanism facilitates the use of a low level of torque to cause engagement of the coil with heart tissue so that a physician operator can feel the engagement of the heart tissue with the lead despite the large distance between the lead tip and a stylet knob.
REFERENCES:
patent: 4106512 (1978-08-01), Bisping
patent: 4217913 (1980-08-01), Dutcher
patent: 4570642 (1986-02-01), Kane et al.
patent: 5076285 (1991-12-01), Hess et al.
patent: 5129404 (1992-07-01), Spehr et al.
patent: 5228455 (1993-07-01), Barcel
Doumenis Demetrios I.
Rebell Allan K.
Getzow Scott M.
Kamm William E.
Telectronics Pacing Systems Inc.
LandOfFree
Active fixation lead with a dual-pitch, free spinning compound s does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Active fixation lead with a dual-pitch, free spinning compound s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Active fixation lead with a dual-pitch, free spinning compound s will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-508556