Inventor
MCDONALD RAY S
US22 patents
⚠️ This page may combine multiple inventors who share the name “MCDONALD RAY S”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MEDTRONIC INC
21 patentsUS5171228ADec 15, 1992
Apparatus for medical instrument placement verification
MEDTRONIC INC171 citations99
US5009644AApr 23, 1991
Needle placement verifier
MEDTRONIC INC151 citations99
US5006115AApr 9, 1991
Needle placement sensor
MEDTRONIC INC211 citations99
US4401120AAug 30, 1983
Digital cardiac pacemaker with program acceptance indicator
MEDTRONIC INC66 citations96
US4257423AMar 24, 1981
Medical device
MEDTRONIC INC60 citations96
US4340062AJul 20, 1982
Body stimulator having selectable stimulation energy levels
MEDTRONIC INC84 citations94
US4253466AMar 3, 1981
Temporary and permanent programmable digital cardiac pacemaker
MEDTRONIC INC61 citations94
US5351696AOct 4, 1994
Method and apparatus for intracardiac electrogram morphologic analysis
MEDTRONIC INC72 citations92
US4276883AJul 7, 1981
Battery monitor for digital cardiac pacemaker
MEDTRONIC INC42 citations92
US4273132AJun 16, 1981
Digital cardiac pacemaker with threshold margin check
MEDTRONIC INC50 citations92
US4273133AJun 16, 1981
Programmable digital cardiac pacemaker with means to override effects of reed switch closure
MEDTRONIC INC38 citations92
US4233985ANov 18, 1980
Multi-mode programmable digital cardiac pacemaker
MEDTRONIC INC40 citations90
US4515159AMay 7, 1985
Digital cardiac pacemaker with rate limit means
MEDTRONIC INC22 citations82
US4324252AApr 13, 1982
Memory control circuitry for implantable medical devices
MEDTRONIC INC15 citations74
US4275738AJun 30, 1981
Digital cardiac pacemaker clocking means
MEDTRONIC INC11 citations74
US4267843AMay 19, 1981
Means to inhibit a digital cardiac pacemaker
MEDTRONIC INC13 citations74
US4263915AApr 28, 1981
Digital cardiac pacemaker with hysteresis
MEDTRONIC INC15 citations74
US4241736ADec 30, 1980
Reset means for programmable digital cardiac pacemaker
MEDTRONIC INC9 citations74
US4236522ADec 2, 1980
Asynchronous/demand made programmable digital cardiac pacemaker
MEDTRONIC INC16 citations74
US4230120AOct 28, 1980
Energy compensation means for digital cardiac pacemaker
MEDTRONIC INC12 citations74
US4337777AJul 6, 1982
Rate limited pacer
MEDTRONIC INC2 citations60