Patent EP0466413A2 successfully refreshed from Google Patents.
EP0466413A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Synchronous telemetry system for an implantable medical device
Assignee: Cook Vascular Inc
•
Filing: 1991-07-05
•
Granted: —
•
Expires: 2011-07-05
Abstract
Abstract A synchronous telemetry system and method for multiplexed telemetry of analog and digital information from a pacemaker or other implantable medical device. Telemetry sync pulses are generated at a 1 kHz rate, and pulse-position modulation is employed for generating an analog data pulse and a digital data pulse relative to the same sync pulse and displaced therefrom by different intervals respectively corresponding to the instantaneous value of an analog input signal and the instantaneous state of a digital input signal. In addition to multiplexing of analog and digital information in a composite bit, multiplexing is provided for dual-channel analog operation.
Inventors
- 👤 Donald A. Henry
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 18:22
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/36; A61N1/372; A61N1/37211; A61N1/37252; A61N1/3727; H; H04; H04L; H04L25/00; H04L25/38; H04L25/40; H04L25/49; H04L25/4902; Y; Y10; Y10S; Y10S128/00; Y10S128/903
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
87 words
A synchronous telemetry system for a pacemaker which generates pacing pulses for control of cardiac rate, comprising: means for generating a plurality of telemetry sync pulses between consecutive pacing pulses; an analog signal input; pulse-position modulation means for generating an analog data pulse displaced from a first one of said sync pulses by a time interval corresponding to the instantaneous value of an analog signal at said analog signal input; and means for transmitting said first sync pulse and said analog data pulse to an external device.
Claim 2
Dependent Claim
36 words
The synchronous telemetry system of claim 1 wherein said pulse-position modulation means includes means for generating said analog data pulse within a predetermined time window following said first sync pulse by a predetermined minimum time interval.
Claim 3
Dependent Claim
82 words
The synchronous telemetry system of claim 2, further comprising a digital signal input, wherein said pulse-position modulation means further includes means for generating a digital data pulse within said predetermined minimum time interval and displaced from said first sync pulse by a discrete interval corresponding to the instantaneous state of a digital signal at said digital signal inpunt; and wherein said transmitting means includes means for transmitting said digital data pulse along with said first sync pulse and said analog data pulse.
Claim 4
Dependent Claim
43 words
The synchronous telemetry system of claim 3 wherein said pulse-position modulation means further includes a voltage controlled variable one-shot having a trigger input connected to said sync pulse generating means and having a pulse interval control input connected to said analog signal input.
Claim 5
Dependent Claim
43 words
The synchronous telemetry system of claim 2, further comprising means for multiplexing analog data pulses within said predetermined time window, and means for indicating the source of an analog data pulse within said time window with an identification pulse outside said time window.
Claim 6
Dependent Claim
73 words
A synchronous telemetry method for a pacemaker which generates pacing pulses for control of cardiac rate, comprising the steps: generating a plurality of telemetry sync pulses between consecutive pacing pulses; generating an analog data pulse displaced from a first one of said sync pulses by a time interval corresponding to the instantaneous value of an analog input signal; and transmitting said first sync pulse and said analog data pulse to an external device.
Claim 7
Dependent Claim
30 words
The synchronous telemetry method of claim 6 wherein said analog data pulse is generated within a predetermined time window following said first sync pulse by a predetermined minimum time interval.
Claim 8
Dependent Claim
62 words
The synchronous telemetry method of claim 7, further comprising the step of generating a digital data pulse within said predetermined minimum time interval and displaced from said first sync pulse by a discrete interval corresponding to the instantaneous state of a digital input signal, wherein said digital data pulse is transmitted along with said first sync pulse and said analog data pulse.
Claim 9
Dependent Claim
38 words
The synchronous telemetry method of claim 8 wherein said step of generating an analog data pulse includes controlling the pulse width of a variable one-shot with said analog input signal and triggering said one-shot with said sync pulse.
Claim 10
Dependent Claim
42 words
The synchronous telemetry method of claim 7, further comprising the steps of multiplexing analog data pulses within said predetermined time window, and indicating the source of an analog data pulse within said time window with an identification pulse outside said time window.
Claim 11
Dependent Claim
128 words
A synchronous telemetry system for multiplexed telemetry of analog and digital information from an implantable medical device, comprising: means for generating a plurality of telemetry sync pulses; an analog signal input; a digital signal input; pulse position modulation means for generating an analog data pulse and a digital data pulse relative to the same sync pulse, said pulse-position modulation means including means for displacing said analog data pulse and said digital data pulse from said same sync pulse by different time intervals respectively corresponding to the instantaneous value of an analog signal at said analog signal input and the instantaneous state of a digital signal at said digital signal input; and means for transmitting said sync pulses and said analog and digital data pulses to an external device.
Claim 12
Dependent Claim
36 words
The synchronous telemetry system of claim 11 wherein said pulse-position modulation means includes means for generating said analog data pulse within a predetermined time window following said same sync pulse by a predetermined minimum time interval.
Claim 13
Dependent Claim
26 words
The synchronous telemetry system of claim 12, wherein said pulse-position modulation means includes means for generating said digital data pulse within said predetermined minimurn time interval.
Claim 14
Dependent Claim
70 words
The synchronous telemetry system of claim 13, further comprising multiplexer means for multiplexing signals from a plurality of analog channels coupled to said analog signal input, said multiplexer means including means for generating an analog data pulse within said predetermined time window for a signal from a selected one of said analog channels, and means for indicating the corresponding analog channel with a channel identification pulse outside said time window.
Claim 15
Dependent Claim
104 words
A synchronous telemetry method for multiplexed telemetry of analog and digital information from an implantable medical device, comprising the steps: generating a plurality of telemetry sync pulses; generating an analog data pulse and a digital data pulse relative to the same sync pulse, said data pulse generating step including displacing said analog data pulse and said digital data pulse from said same sync pulse by different intervals respectively corresponding to the instantaneous value of an analog input signal an d the instantaneous state of a digital input signal; and transmitting said sync pulses and said analog and digital data pulses to an external device.
Claim 16
Dependent Claim
30 words
The synchronous telemetry method of claim 15 wherein said analog data pulse is generated within a predetermined time window following said same sync pulse by a predetermined minimum time interval.
Claim 17
Dependent Claim
20 words
The synchronous telemetry method of claim 16, wherein said digital data pulse is qenerated within said predetermined minimum time interval.
Claim 18
Dependent Claim
65 words
The synchronous telemetry method of claim 17, further comprising the steps: multiplexing signals from a plurality of analog channels coupled to said analog signal input, said multiplexer step including generating an analog data pulse within said predetermined time window for a signal from a selected one of said analog channels; and indicating the corresponding analog channel with a channel identification pulse outside said time window.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.