IT1172645B - Respiratory parameter detection circuit in implantable devices - Google Patents
Respiratory parameter detection circuit in implantable devicesInfo
- Publication number
- IT1172645B IT1172645B IT12624/83A IT1262483A IT1172645B IT 1172645 B IT1172645 B IT 1172645B IT 12624/83 A IT12624/83 A IT 12624/83A IT 1262483 A IT1262483 A IT 1262483A IT 1172645 B IT1172645 B IT 1172645B
- Authority
- IT
- Italy
- Prior art keywords
- impedance
- variations
- time
- respiratory parameter
- detection circuit
- Prior art date
Links
Abstract
The circuit includes a conversion unit which detects the impedance variations of a part of the patient's body depending on respiration and turns them into a corresponding analogue signal with sampling signals lasting about 122 microseconds and repeated at intervals of about 125 ms. A unit (20) extracts from the noisy output signal of the conversion unit a clear and regular signal, e.g. a squared one, from which it is easier to obtain the right variable proportional to the respiratory parameter chosen. The variable is then used to physiologically control an electrostimulation circuit, e.g. for a pacemaker. The extracting unit detects, at the sample rate of the body impedance, the time variations of the voltage corresponding to the impedance measurement taken from time to time, the variations being both positive and negative with regard to the line corresponding to the so called base impedance.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT12624/83A IT1172645B (en) | 1983-09-21 | 1983-09-21 | Respiratory parameter detection circuit in implantable devices |
| US06/651,354 US4576183A (en) | 1983-09-21 | 1984-09-17 | Electronic circuit for monitoring respiratory parameter for controlling operation of implantable medical device |
| EP84111174A EP0135911B1 (en) | 1983-09-21 | 1984-09-19 | Electronic circuit detecting respiratory parameters in implantable devices, such as implantable and physiologic pacemakers |
| DE8484111174T DE3477738D1 (en) | 1983-09-21 | 1984-09-19 | Electronic circuit detecting respiratory parameters in implantable devices, such as implantable and physiologic pacemakers |
| AT84111174T ATE42209T1 (en) | 1983-09-21 | 1984-09-19 | ELECTRICAL CIRCUIT FOR DETERMINING AGING PARAMETERS FOR IMPLANTABLE DEVICES SUCH AS IMPLANTABLE AND PHYSIOLOGICAL PACEMAKER. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT12624/83A IT1172645B (en) | 1983-09-21 | 1983-09-21 | Respiratory parameter detection circuit in implantable devices |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| IT8312624A0 IT8312624A0 (en) | 1983-09-21 |
| IT8312624A1 IT8312624A1 (en) | 1985-03-21 |
| IT1172645B true IT1172645B (en) | 1987-06-18 |
Family
ID=11142306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT12624/83A IT1172645B (en) | 1983-09-21 | 1983-09-21 | Respiratory parameter detection circuit in implantable devices |
Country Status (1)
| Country | Link |
|---|---|
| IT (1) | IT1172645B (en) |
-
1983
- 1983-09-21 IT IT12624/83A patent/IT1172645B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| IT8312624A1 (en) | 1985-03-21 |
| IT8312624A0 (en) | 1983-09-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19960927 |