US5112321A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trocar sleeve having manual closure
Assignee: Richard Wolf GmbH
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Filing: 1991-06-07
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Granted: 1992-05-12
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Expires: 2011-06-07
Abstract
Abstract The invention relates to a trocar sleeve for guiding endoscopes and instruments which can be exchanged for a trocar, the tube of the trocar sleeve being connected proximally to a handle part and being closable. The proximal end face of the handle part is covered by a closure part which can be adjusted by hand transversely to the tube axis and has at least one hole with an introduction support connected to it. The or each hole of the closure part can be covered by the tube channel as a result of appropriate rotation of the closure part.
Inventors
- 👤 Siegfried Hiltebrandt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:36
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/34; A61B17/3498; A61B2017/348; A61B2017/3482; A61B2017/349
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
235 words
An apparatus for guiding a medical instrument into a body cavity comprising: a trocar sleeve comprising an elongated tube forming a channel and having an axis and a proximal and distal end; a handle part connected to said proximal end of said sleeve, said handle part comprising a handle part opening in axial alignment with said tube channel and a proximal end face, and a U-shaped projection; a closure part formed as a disc having at lest one closure part opening therein and being movably mounted on said proximal end face of said handle part, said closure part comprising means for introducing said medical instrument through said tube and said channel and being movable transversely to said sleeve axis from a first position wherein said closure part seals said tube channel to a second position wherein said closure part opening is in axial alignment with said tube channel for permitting the insertion of said instrument; and a fastening pin being opposite said U-shaped projection and extending parallel to said sleeve axis through said disc into said handle part for permitting said movement of said disc thereabout, wherein said closure part is retained against said proximal end face of said handle part on one side of said tube channel by means of said fastening pin and is retained against said proximal end face on the opposite side of said tube channel by means of said projection.
Claim 2
Independent Claim
235 words
An apparatus for guiding a medical instrument into a body cavity comprising: a trocar sleeve comprising an elongated tube forming a channel and having an axis and a proximal and distal end; a handle part connected to said proximal end of said sleeve, said handle part comprising a handle part opening in axial alignment with said tube channel and a proximal end face, and a U-shaped projection; a closure part formed as a disc having at lest one closure part opening therein and being movably mounted on said proximal end face of said handle part, said closure part comprising means for introducing said medical instrument through said tube and said channel and being movable transversely to said sleeve axis from a first position wherein said closure part seals said tube channel to a second position wherein said closure part opening is in axial alignment with said tube channel for permitting the insertion of said instrument; and a fastening pin being opposite said U-shaped projection and extending parallel to said sleeve axis through said disc into said handle part for permitting said movement of said disc thereabout, wherein said closure part is retained against said proximal end face of said handle part on one side of said tube channel by means of said fastening pin and is retained against said proximal end face on the opposite side of said tube channel by means of said projection.
Claim 3
Dependent Claim
45 words
The apparatus of claim 1, additionally comprising two stop pins at said closure part extending parallel to said tube channel toward said distal end of said sleeve so as to come to rest against said handle part for limiting said movement of said closure part.
Claim 4
Dependent Claim
17 words
The apparatus of claim 1, additionally comprising a seal between said handle part and said closure part.
Claim 5
Dependent Claim
23 words
The apparatus of claim 3, additionally comprising a circular groove for housing said seal in said handle part around said handle part opening.
Claim 6
Dependent Claim
17 words
The apparatus of claim 1, additionally comprising a peripheral recess in said closure part for finger engagement.
Claim 7
Dependent Claim
19 words
The apparatus of claim 5, wherein said peripheral recess is located between said stop pins and opposite said projection.
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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) | 1995-05-12 | 1995-11-11 | 1996-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-12 | 1999-11-11 | 2000-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-12 | 2003-11-11 | 2004-05-12 | $7700.00 | Window Closed / Lapsed |