Negative pressure generating device and automatic negative pressure wound therapy device having pressure changing function using the same
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United States of America Patent
Stats
-
Nov 30, 2021
Grant Date -
Sep 12, 2019
app pub date -
Nov 8, 2017
filing date -
Nov 8, 2016
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention relates to a negative pressure generating device and an automatic negative pressure wound therapy device having a pressure changing function using the same. The present invention includes a static load elastic unit which provides an elastic force having a predetermined magnitude; a rotating unit which is connected to the static load elastic unit to rotate by the static load elastic unit; and a negative pressure cylinder which is connected to the rotating unit and interworks with the rotation of the rotating unit to generate a negative pressure therein. According to the present invention, a constant negative pressure may be consistently generated by a mechanical structure so that a manufacturing cost is significantly reduced as compared with an electrical structure and the size may be reduced.
First Claim
Other Claims data not available
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International Classification(s)
- 2017 Application Filing Year
- F04B Class
- 1234 Applications Filed
- 897 Patents Issued To-Date
- 72.70 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- F04B Class
- 0 % this patent is cited more than
- 4 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
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