Patent US4340052B1 successfully refreshed from Google Patents.
US5221264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reduction port for laparoscopic trocar sleeve and related method
Assignee: Individual
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Filing: 1992-03-10
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Granted: 1993-06-22
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Expires: 2012-03-10
Abstract
Abstract A reduction port for a trocar sleeve comprises a plate having an aperture of a predetermined diameter, a pair of doors slidably mounted to the plate for reducing the size of the aperture, and a securing component fastened to the plate for removably attaching the plate to a proximal end of a laparoscopic trocar sleeve. Each plate is provided with a semicircular aperture having a diameter equal to the reduced diameter of the aperture.
Inventors
- 👤 Peter J. Wilk
- 👤 Naomi L. Nakao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:25
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/34; A61B17/3462
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
115 words
A reduction port for a trocar sleeve, comprising: a plate; first means on said plate for defining a first aperture of a first diameter; second means on said plate for defining a second aperture of a second diameter smaller than said first diameter such that said first aperture and said second aperture are alternately utilizable, said second means including a pair of door elements movably mounted to said plate for displacement in a plane parallel to said plate to at least partially cover said first aperture to reduce the size thereof to form said second aperture; and means fastened to said plate for attaching said plate to a proximal end of a laparoscopic trocar sleeve.
Claim 2
Dependent Claim
115 words
A reduction port for a trocar sleeve, comprising: a plate; first means on said plate for defining a first aperture of a first diameter; second means on said plate for defining a second aperture of a second diameter smaller than said first diameter such that said first aperture and said second aperture are alternately utilizable, said second means including a pair of door elements movably mounted to said plate for displacement in a plane parallel to said plate to at least partially cover said first aperture to reduce the size thereof to form said second aperture; and means fastened to said plate for attaching said plate to a proximal end of a laparoscopic trocar sleeve.
Claim 3
Dependent Claim
26 words
The port defined in claim 1 wherein each of said door elements is provided with a semicircular cutout having a diameter equal to said second diameter.
Claim 4
Dependent Claim
31 words
The port defined in claim 1 wherein said means for attaching includes a resilient element extending beyond an edge of said plate to engage a surface of the laparoscopic trocar sleeve.
Claim 5
Dependent Claim
72 words
A reduction port for a trocar sleeve, comprising: a plate having an aperture of a predetermined size; reducing means including a pair of auxiliary door elements movably mounted to said plate for displacement in a plane parallel to said plate for partially overlapping with said aperture to reduce the size of said aperture; and means fastened to said plate for attaching said plate to a proximal end of a laparoscopic trocar sleeve.
Claim 6
Dependent Claim
72 words
A reduction port for a trocar sleeve, comprising: a plate having an aperture of a predetermined size; reducing means including a pair of auxiliary door elements movably mounted to said plate for displacement in a plane parallel to said plate for partially overlapping with said aperture to reduce the size of said aperture; and means fastened to said plate for attaching said plate to a proximal end of a laparoscopic trocar sleeve.
Claim 7
Dependent Claim
25 words
The port defined in claim 4 wherein said reducing means reduces the size of said aperture from a predetermined diameter to a smaller predetermined diameter.
Claim 8
Dependent Claim
27 words
The port defined in claim 4 wherein each of said door elements is provided with a semicircular cutout having a diameter equal to said smaller predetermined diameter.
Claim 9
Dependent Claim
31 words
The port defined in claim 4 wherein said means for attaching includes a resilient element extending beyond an edge of said plate to engage a surface of the laparoscopic trocar sleeve.
Claim 10
Independent Claim
171 words
A method for use in laparoscopic surgery, comprising the steps of: attaching, to a proximal end of a laparoscopic trocar sleeve traversing an abdominal wall of a patient, a port member having an aperture of a first predetermined diameter for reducing an effective inner diameter of said sleeve; inserting through said port member and said sleeve a first elongate shaft of a first laparoscopic instrument, said shaft having a first diameter corresponding to said predetermined diameter; withdrawing said shaft from said sleeve; moving two door elements of said port member relative to one another, while maintaining said port member on said sleeve, each of said door elements being provided with a semicircular cutout having a diameter equal to a second predetermined diameter so that said aperture assumes said second predetermined diameter, thereby changing the effective inner diameter of said sleeve; and inserting through said port member and said sleeve a second elongate shaft of a second laparoscopic instrument, said second shaft having a second diameter corresponding to said second predetermined diameter.
Claim 11
Independent Claim
171 words
A method for use in laparoscopic surgery, comprising the steps of: attaching, to a proximal end of a laparoscopic trocar sleeve traversing an abdominal wall of a patient, a port member having an aperture of a first predetermined diameter for reducing an effective inner diameter of said sleeve; inserting through said port member and said sleeve a first elongate shaft of a first laparoscopic instrument, said shaft having a first diameter corresponding to said predetermined diameter; withdrawing said shaft from said sleeve; moving two door elements of said port member relative to one another, while maintaining said port member on said sleeve, each of said door elements being provided with a semicircular cutout having a diameter equal to a second predetermined diameter so that said aperture assumes said second predetermined diameter, thereby changing the effective inner diameter of said sleeve; and inserting through said port member and said sleeve a second elongate shaft of a second laparoscopic instrument, said second shaft having a second diameter corresponding to said second predetermined diameter.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-06-21 | 1996-12-21 | 1997-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-21 | 2000-12-21 | 2001-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-21 | 2004-12-21 | 2005-06-22 | $7700.00 | Window Closed / Lapsed |