Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1995-01-11
1996-04-16
Kamm, William E.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
128705, A61N 136
Patent
active
055077838
ABSTRACT:
A pacemaker mediated tachycardia (PMT) is detected and suppressed in an implantable pacemaker operating in the VDD or VDDR modality. Such suppression is effectuated by extending the post ventricular atrial refractory period (PVARP) of the pacemaker to an extended PVARP that prevents retrograde P-waves from being tracked, thereby suppressing the PMT. The extended PVARP includes a retrograde window portion, following an absolute refractory portion. P-waves that occur during the retrograde window portion of the extended PVARP are deemed to be retrograde P-waves. The extended PVARP is returned to its original value whenever: (1) a P-wave is sensed following the extended PVARP, which P-wave is deemed to be a sinus P-wave, or (2) whenever a sufficient number of cardiac cycles elapse without the occurrence of a retrograde P-wave.
REFERENCES:
patent: 4485818 (1984-12-01), Leckrone et al.
patent: 4539991 (1985-09-01), Boute et al.
patent: 4552154 (1985-11-01), Hartlaub
patent: 4554920 (1985-11-01), Baker et al.
patent: 4554921 (1985-11-01), Boute et al.
patent: 4569350 (1986-02-01), Mumford et al.
patent: 4624260 (1986-11-01), Baker et al.
patent: 4625730 (1986-12-01), Fountain et al.
patent: 4686989 (1987-08-01), Smyth et al.
patent: 4712555 (1987-12-01), Thornander et al.
patent: 4712556 (1987-12-01), Baker
patent: 4788980 (1988-12-01), Mann et al.
patent: 4809697 (1989-03-01), Causey, III et al.
patent: 4815469 (1989-03-01), Cohen et al.
patent: 4847617 (1989-07-01), Silvian
patent: 4856523 (1989-08-01), Sholder et al.
patent: 4860749 (1989-08-01), Lehmann
patent: 4940052 (1990-07-01), Mann et al.
patent: 4944298 (1990-07-01), Sholder
patent: 5074308 (1991-12-01), Sholder et al.
patent: 5085215 (1992-02-01), Nappholz et al.
patent: 5097832 (1992-03-01), Buchanan
patent: 5103822 (1992-04-01), Duncan
patent: 5144949 (1992-09-01), Olson
patent: 5156147 (1992-10-01), Warren et al.
patent: 5188105 (1993-02-01), Keimel
patent: 5205283 (1993-04-01), Olson
patent: 5228438 (1993-07-01), Buchanan
patent: 5312450 (1994-05-01), Markwitz
Jastrzab Jeffrey R.
Kamm William E.
Pacesetter Inc.
Romano Malcolm J.
LandOfFree
Pacemaker mediated tachycardia response for VDD and VDDR modalit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pacemaker mediated tachycardia response for VDD and VDDR modalit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pacemaker mediated tachycardia response for VDD and VDDR modalit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-321955