Working device for drilling, cutting and screwdriver instruments used for medical purposes
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 9, 2003
Issued Date -
N/A
app pub date -
Jan 7, 2000
filing date -
May 8, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention concerns an electric drive device for medical applications, especially for driving drills, cutting instruments and screw drivers. Such endo-instruments have predetermined working rotation areas and comprise maximally permissible torque load limits according to the materials thereof. The drive device is equipped with a stepping motor in order to avoid exceeding the torque load limits. The stepping motor disconnects when the maximum torque limit of the stepping motor is fixed below the torque load limit of the instrument. In order to precisely set the torque load limit, a calibration is carried out within the limits of a no-load operation during which the efficiency of the driving shaft up to the instrument is detected, and with it, the value of the current is determined for a zero torque.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully