US6077285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torsional ultrasound handpiece
Assignee: Novartis AG
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Filing: 1998-06-29
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Granted: 2000-06-20
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Expires: 2018-06-29
Abstract
Abstract A handpiece having two sets of piezoelectric elements. One set of elements is polarized to produce longitudinal motion. The other set of elements is polarized to produce torsional motion. An appropriate ultrasound driver drives each set of elements at their respective resonant frequencies to produce longitudinal vibration and torsional oscillation.
Inventors
- 👤 Mikhail Boukhny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:06
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0607; B06B1/0611; A; A61; A61F; A61F9/00; A61F9/007; A61F9/00736; A61F9/00745; A61B; A61B17/00; A61B17/32; A61B17/320068; A61B2017/320098
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
69 words
An ultrasound surgical handpiece, comprising: a) a handpiece shell; b) an ultrasound horn held within the shell; c) a pair of ultrasound crystals polarized to produce longitudinal motion held in contact with a pair of ultrasound crystals polarized to produce torsional motion, at least one of the pairs of crystals contacting the ultrasound horn; and d) a cutting tip mounted on the horn opposite the torsional and longitudinal crystals.
Claim 2
Dependent Claim
69 words
An ultrasound surgical handpiece, comprising: a) a handpiece shell; b) an ultrasound horn held within the shell; c) a pair of ultrasound crystals polarized to produce longitudinal motion held in contact with a pair of ultrasound crystals polarized to produce torsional motion, at least one of the pairs of crystals contacting the ultrasound horn; and d) a cutting tip mounted on the horn opposite the torsional and longitudinal crystals.
Claim 3
Dependent Claim
12 words
The handpiece of claim 1, wherein the cutting tip is asymmetrically shaped.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-06-20 | 2003-12-20 | 2004-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-06-20 | 2007-12-20 | 2008-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-06-20 | 2011-12-20 | 2012-06-20 | $7700.00 | Window Closed / Lapsed |