Patent US6767355B2 successfully refreshed from Google Patents.
US6767355B2
Expired / Lapsed
US
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Tracheostomy dilator
Assignee: Willy Ruesch GmbH
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Filing: 2001-10-31
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Granted: 2004-07-27
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Expires: 2021-10-31
Abstract
Abstract A tracheostomy dilator comprises a rod which is penetrated by an inner lumen. Both ends of the inner lumen are open, at the end facing the patient and at the end of the tracheostomy dilator facing away from the patient. The end facing the patient is provided with a thread. The tracheostomy dilator is used as screw dilator and can widen the tissue in one single dilation process such that a further tracheostomy cannula can be inserted into the trachea.
Inventors
- 👤 Giulio Frova
- 👤 Michael Quintel
- 👤 Werner Mailänder
- 👤 Heiko Kaczorowski
- 👤 Gisbert Ranzinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:37
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/04; A61M16/0465; A61M16/0472; A61M16/0402; A61M16/0429; A61M16/0488
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
88 words
A tracheostomy dilator comprising a rod having a first cutting end facing the patient and a second gripping end facing away from the patient, an inner lumen which is open at both ends of the rod and extends from the first end to the second end of the rod, a threaded section at said first end, the threaded section of the rod tapering towards a free end of the rod and being a cutting thread; said threaded section being coated with a hydrophilic layer and/or a sliding gel.
Claim 2
Dependent Claim
88 words
A tracheostomy dilator comprising a rod having a first cutting end facing the patient and a second gripping end facing away from the patient, an inner lumen which is open at both ends of the rod and extends from the first end to the second end of the rod, a threaded section at said first end, the threaded section of the rod tapering towards a free end of the rod and being a cutting thread; said threaded section being coated with a hydrophilic layer and/or a sliding gel.
Claim 3
Dependent Claim
17 words
The tracheostomy dilator according to claim 1 , wherein the thread has different pitches across its length.
Claim 4
Dependent Claim
20 words
The tracheostomy dilator according to claim 1 , wherein the free end of the rod facing the patient is chamfered.
Claim 5
Dependent Claim
25 words
The tracheostomy dilator according to claim 1 , wherein the diameter of the inner lumen corresponds substantially to the outer diameter of a guiding wire.
Claim 6
Dependent Claim
33 words
The tracheostomy dilator according to claim 1 wherein said thread on said tapered portion comprises a first thread, said tracheostomy dilator further including a second thread on said rod above said first thread.
Claim 7
Dependent Claim
22 words
The tracheostomy dilator according to claim 5 wherein said second thread has an outer surface which shows little friction when contacting tissue.
Claim 8
Dependent Claim
21 words
The tracheostomy dilator according to claim 1 , wherein a tracheostomy cannula is disposed on the outer surface of the rod.
Claim 9
Dependent Claim
84 words
A tracheostomy dilator comprising a rod having a first end facing the patient and a second end facing away from the patient, an inner lumen which is open at both ends of the rod and extends from the first end to the second end of the rod, a threaded section at said first end, the threaded section of the rod tapering towards a free end of the rod; wherein the rod comprises two shell segments which are capable of being separated from each other.
Claim 10
Dependent Claim
84 words
A tracheostomy dilator comprising a rod having a first end facing the patient and a second end facing away from the patient, an inner lumen which is open at both ends of the rod and extends from the first end to the second end of the rod, a threaded section at said first end, the threaded section of the rod tapering towards a free end of the rod; wherein the rod comprises two shell segments which are capable of being separated from each other.
Claim 11
Dependent Claim
159 words
A tracheostomy dilator comprising a rod having a first end which faces a patient and a second gripping end which faces away from the patient, an inner lumen which is open at the ends of said rod and extends from the first end to the second gripping end of the rod, a first thread at the first end of the rod, the section of the rod which is provided with the first thread tapering towards a free end of the rod, and a second thread on said rod positioned below said second, gripping end and adjacent said first thread; said first thread being a cutting thread adapted to cut into a patient and said second thread being a positioning thread adapted to maintain the position of said dilator relative to a patient upon insertion of the dilator into a patient; at least one of said first and second threads being coated with a hydrophilic layer and/or a sliding gel.
Claim 12
Dependent Claim
159 words
A tracheostomy dilator comprising a rod having a first end which faces a patient and a second gripping end which faces away from the patient, an inner lumen which is open at the ends of said rod and extends from the first end to the second gripping end of the rod, a first thread at the first end of the rod, the section of the rod which is provided with the first thread tapering towards a free end of the rod, and a second thread on said rod positioned below said second, gripping end and adjacent said first thread; said first thread being a cutting thread adapted to cut into a patient and said second thread being a positioning thread adapted to maintain the position of said dilator relative to a patient upon insertion of the dilator into a patient; at least one of said first and second threads being coated with a hydrophilic layer and/or a sliding gel.
Claim 13
Dependent Claim
19 words
The tracheostomy dilator of claim 9 wherein said rod is produced from a boil proof plastic material or metal.
Claim 14
Dependent Claim
15 words
The tracheostomy dilator of claim 9 wherein said second thread connects to said first thread.
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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) | 2007-07-27 | 2008-01-26 | 2008-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-07-27 | 2012-01-26 | 2012-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-07-27 | 2016-01-26 | 2016-07-27 | $7700.00 | Window Closed / Lapsed |