EP0249820A1
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EP
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A cardiac pacer for pacing a human heart
Assignee: Pacesetter AB
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Filing: 1987-06-04
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Granted: —
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Expires: 2007-06-04
Abstract
Abstract A cardiac pacer, which generates pacing pulses at a predetermined basic pacing rate, comprises a plurality of body activity sensor means (7, 8, 9; 10, 11, 12; 13, 14, 15) for sensing body activity dependent on different physiological variables and for respectively generating a corresponding body activity output signal dependent thereon. It further includes means (19) for selecting single activity output signals and/or combinations thereof to determine different exercise stages dependent on different physiological variables. Finally it incorporates means (5) connected to said means (4) for generating pacing pulses and to said means (19) for selecting for varying the predetermined basic pacing rate dependent on the selected body activity output signal or combination of signals.
Inventors
- 👤 David C. Amundson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 06:29
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/36; A61N1/362; A61N1/365; A61N1/36585
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
137 words
A cardiac pacer for pacing a heart, comprising a) means (4) for generating pacing pulses (28) at a predetermined basic pacing rate; b) means (2, 3) for transmitting the pacing pulses to the heart (1) for pacing thereof; c) a plurality of body activity sensor means (7, 8, 9; 10, 11, 12; 13, 14, 15) for sensing body activity dependent on different physiological variables and for respectively generating a corresponding body activity output signal dependent thereon; d) means (19) for selecting single activity output signals and/or combinations thereof to determine different exercise stages dependent on different physiological variables; and e) means (5) connected to said means (4) for generating pacing pulses and to said means (19) for selecting for varying the predetermined basic pacing rate dependent on the selected body activity output signals or combination of signals.
Claim 2
Dependent Claim
137 words
A cardiac pacer for pacing a heart, comprising a) means (4) for generating pacing pulses (28) at a predetermined basic pacing rate; b) means (2, 3) for transmitting the pacing pulses to the heart (1) for pacing thereof; c) a plurality of body activity sensor means (7, 8, 9; 10, 11, 12; 13, 14, 15) for sensing body activity dependent on different physiological variables and for respectively generating a corresponding body activity output signal dependent thereon; d) means (19) for selecting single activity output signals and/or combinations thereof to determine different exercise stages dependent on different physiological variables; and e) means (5) connected to said means (4) for generating pacing pulses and to said means (19) for selecting for varying the predetermined basic pacing rate dependent on the selected body activity output signals or combination of signals.
Claim 3
Dependent Claim
23 words
A cardiac pacer according to claim1, further comprising means (20, 25) for weighting single activity output signals and/or combinations thereof by different coefficients.
Claim 4
Dependent Claim
39 words
A cardiac pacer according to claim 1 or 2, wherein said means for selecting comprise means (20, 21) for successively selecting single activity output signals and/or combinations thereof in predetermined time steps after the start of an exercise cycle.
Claim 5
Dependent Claim
37 words
A cardiac pacer according to one of the preceding claims 1 to 3, wherein said means for selecting comprise means (20, 22) for selecting single activity output signals and/or combinations thereof dependent on predetermined pacing rate values.
Claim 6
Dependent Claim
39 words
A cardiac pacer according to one of the preceding claims 1 to 4, wherein said means for selecting comprise means (20, 23) for selecting single activity output signals and/or combination thereof dependent on activity output signals which fluctuate least.
Claim 7
Dependent Claim
48 words
A cardiac pacer according to one of the preceding claims 1 to 5, wherein said means for selecting comprise means (20, 24) for selecting single activity output signals and/or combination thereof dependent on whether or not a single activity output signal and/or combinations thereof fall(s) below a threshold.
Claim 8
Dependent Claim
12 words
A cardiac pacer according to claim 6, wherein the threshold is programmable.
Claim 9
Dependent Claim
26 words
A cardiac pacer according to one of the preceding claims 1 to 7, wherein at least a first body activity signal determines the start of exercise.
Claim 10
Dependent Claim
27 words
A cardiac pacer according to one of the preceding claims 1 to 8, wherein at least a second body activity output signal determines the duration of exercise.
Claim 11
Dependent Claim
25 words
A cardiac pacer according to one of the preceding claims 1 to 9, wherein said second body activity signal also determines the termination of exercise.
Claim 12
Dependent Claim
31 words
A cardiac pacer according to claim 8, wherein said body activity sensor means comprise an acceleration sensor means (10 to 12) for sensing and generating said first body activity output signal.
Claim 13
Dependent Claim
30 words
A cardiac pacer according to claim 9, wherein said body activity sensor means comprise a respiration sensor means (7 to 9) for sensing and generating said second body activity signal.
References Cited (Backward Citations)
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