Retroperfusion control apparatus, system and method
US4865581A · kind A · utility
146Cited by
10References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 29, 1987 |
| Grant date | Sep 12, 1989 |
| Priority date | — |
| Expiry date | May 29, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2230/04
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Retroperfusion control apparatus for supplying arterial blood of a patient to the venous side of the patient's heart including a pump having an inlet and an outlet and a piston movable through a pump stroke for moving a liquid from the inlet to the outlet of the pump. A stepper motor is provided which drives the piston. Electronic circuitry is provided for driving the stepper motor and senses the presence of an R wave in a patient to operate the stepper motor in response to the sensed R wave.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.