Collision preventive device for medical equipment
US4969170A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1989 |
| Grant date | Nov 6, 1990 |
| Priority date | — |
| Expiry date | Sep 26, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/102
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A collision preventive device for medical equipment (such as readiotherapy equipment) having moving parts to which accessaries are disengageably attached includes a contact detection circuit in which the normally closed contact detector switches disposed on the moving part and on the accessary are all coupled in series, so that an occurrence of contact of the moving part or of the accessary attached thereto can be detected by a relay coupled across a current source in series with the contact detector switches. The detector switch on the moving part and that on the accessary are coupled via a connector of a special structure: the connector half disposed on the moving part to which the accessary is attached includes a pair of terminals and a short circuit plate which is automatically electrically coupled across and disconnected from the two terminals according as the accessary is attached to or detached from the moving part, so as to couple or remove the mating connector half disposed on the accessary to or from the connector half on the moving part. Thus, irrespective of whether the accessary is attached or not, the contact detector switches that are currently utilized in detection …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.