US5368607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical trocar and spike assembly
Assignee: Covidien LP
•
Filing: 1992-10-06
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Granted: 1994-11-29
•
Expires: 2012-10-06
Abstract
Abstract A surgical trocar instrument is provided which includes a trocar spike designed to prevent coring of the needlepoint of a trocar tube and which is secured to a knob or holding assembly in a manner that the trocar tube resists relative rotational movement and the spike assembly is biased outwardly of the needlenose of the trocar tube, but the bias may be overcome upon insertion of the trocar tube through a cavity wall, with the bias moving the spike assembly outwardly of the trocar tube to prevent coring during additional surgical maneuvers.
Inventors
- 👤 Michael Freitas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:24
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/34; A61B17/3494; A61B17/3496; A61B2017/00477; A61B17/3417; A61B2017/3454; A61B90/00; A61B90/08; A61B2090/0801; A61B2090/08021
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
131 words
A surgical trocar spike for penetration through a body wall and into a body cavity, the spike comprising: a cylindrical housing including an inboard end and an outboard open end, said cylindrical housing defining an elliptical configuration terminating in a sharpened needle point at the outboard end of said cylindrical housing; and coring prevention means received within said cylindrical housing and biased for extension outboard-most of said needle point for urging solid materials away from said needle point and said open end of said cylindrical housing while said cylindrical housing is moved through said body wall; and means for applying a concentric bias between said cylindrical housing and said coring prevention means, wherein said coring prevention means includes a beveled, tissue-penetrating end extending through said open end of said cylindrical housing.
Claim 2
Dependent Claim
131 words
A surgical trocar spike for penetration through a body wall and into a body cavity, the spike comprising: a cylindrical housing including an inboard end and an outboard open end, said cylindrical housing defining an elliptical configuration terminating in a sharpened needle point at the outboard end of said cylindrical housing; and coring prevention means received within said cylindrical housing and biased for extension outboard-most of said needle point for urging solid materials away from said needle point and said open end of said cylindrical housing while said cylindrical housing is moved through said body wall; and means for applying a concentric bias between said cylindrical housing and said coring prevention means, wherein said coring prevention means includes a beveled, tissue-penetrating end extending through said open end of said cylindrical housing.
Claim 3
Dependent Claim
147 words
A surgical trocar spike concentrically insertable through a tubular trocar housing for penetration of the spike and housing through a body wall and into a body cavity, the spike comprising: a cylindrical housing including an inboard end and an outboard open end extendable through said trocar housing, said cylindrical housing defining a sharpened needle point at the outboard-most end of said cylindrical housing; and coring prevention means received within said cylindrical housing and biased for extension outboard of said needle point for urging solid material of said body wall away from said needle point and said open end of said cylindrical housing while said cylindrical housing is moved through said body wall; and means for applying a concentric bias between said cylindrical housing and said coring prevention means, wherein said coring prevention means includes a beveled, tissue-penetrating end extending through said open end of said cylindrical housing.
Claim 4
Dependent Claim
147 words
A surgical trocar spike concentrically insertable through a tubular trocar housing for penetration of the spike and housing through a body wall and into a body cavity, the spike comprising: a cylindrical housing including an inboard end and an outboard open end extendable through said trocar housing, said cylindrical housing defining a sharpened needle point at the outboard-most end of said cylindrical housing; and coring prevention means received within said cylindrical housing and biased for extension outboard of said needle point for urging solid material of said body wall away from said needle point and said open end of said cylindrical housing while said cylindrical housing is moved through said body wall; and means for applying a concentric bias between said cylindrical housing and said coring prevention means, wherein said coring prevention means includes a beveled, tissue-penetrating end extending through said open end of said cylindrical housing.
Claim 5
Dependent Claim
120 words
A surgical trocar spike for penetration through a body wall and into a bodily cavity, the spike comprising: a cylindrical housing including an inboard end and an outboard open end, said cylindrical housing defining a sharpened needle point at the outboard-most end of said cylindrical housing; and coring prevention means received within said cylindrical housing and biased for extension outboard of said needle point for urging solid material interior of said body wall away from said needle point and said open end of said cylindrical housing while said cylindrical housing is moved through said solid material interior of said body wall, wherein said coring prevention means includes a beveled, tissue-penetrating end extending through said open end of said cylindrical housing.
Claim 6
Dependent Claim
120 words
A surgical trocar spike for penetration through a body wall and into a bodily cavity, the spike comprising: a cylindrical housing including an inboard end and an outboard open end, said cylindrical housing defining a sharpened needle point at the outboard-most end of said cylindrical housing; and coring prevention means received within said cylindrical housing and biased for extension outboard of said needle point for urging solid material interior of said body wall away from said needle point and said open end of said cylindrical housing while said cylindrical housing is moved through said solid material interior of said body wall, wherein said coring prevention means includes a beveled, tissue-penetrating end extending through said open end of said cylindrical housing.
Claim 7
Dependent Claim
188 words
A surgical instrument introducible through a trocar, said trocar having an elongate tubular housing having a first open end portion for positioning through a body wall and a second open end portion for introduction and removal of auxiliary surgical devices therethrough while said open end portion is positioned through the body wall, said surgical instrument comprising: a cylindrical housing including an inboard end and an outboard open end extendable through said second opposite open end of said trocar, said cylindrical housing defining an elliptical configuration terminating in a sharp needle point at the outboard-most end of said cylindrical housing; coring prevention means received within said cylindrical housing and biased for extension outboard of said needle point for urging solid material interior of said body wall away from said needle point and said open end of said cylindrical housing while said cylindrical housing is moved through said solid material interior of said body wall; and means for applying a concentric bias between said cylindrical housing and said coring prevention means, wherein said coring prevention means includes a beveled, tissue-penetrating end extending through said open end of said cylindrical housing.
Claim 8
Dependent Claim
188 words
A surgical instrument introducible through a trocar, said trocar having an elongate tubular housing having a first open end portion for positioning through a body wall and a second open end portion for introduction and removal of auxiliary surgical devices therethrough while said open end portion is positioned through the body wall, said surgical instrument comprising: a cylindrical housing including an inboard end and an outboard open end extendable through said second opposite open end of said trocar, said cylindrical housing defining an elliptical configuration terminating in a sharp needle point at the outboard-most end of said cylindrical housing; coring prevention means received within said cylindrical housing and biased for extension outboard of said needle point for urging solid material interior of said body wall away from said needle point and said open end of said cylindrical housing while said cylindrical housing is moved through said solid material interior of said body wall; and means for applying a concentric bias between said cylindrical housing and said coring prevention means, wherein said coring prevention means includes a beveled, tissue-penetrating end extending through said open end of said cylindrical housing.
Claim 9
Dependent Claim
192 words
A surgical instrument comprising: an elongated trocar tubular housing having a first open end portion for positioning through a body wall and a second opposite open end portion for introduction and removal of auxiliary surgical devices therethrough while said first open end portion is positioned through the body wall; and an elongate trocar spike assembly concentrically insertable through said second open end and comprising: a cylindrical housing including an inboard end and an outboard open end extendable through said second opposite open end of said trocar housing, said cylindrical housing defining a sharp needle point at the outboard-most end of said cylindrical housing; coring prevention means received within said cylindrical housing and biased for extension outboard of said needle point for urging solid material interior of said body wall away from said needle point and said open end of said cylindrical housing while said cylindrical housing is moved through said solid material interior of said body wall; and means for applying a concentric bias between said cylindrical housing and said coring prevention means, wherein said coring prevention means includes a beveled, tissue-penetrating end extending though said open end of said cylindrical housing.
Claim 10
Dependent Claim
192 words
A surgical instrument comprising: an elongated trocar tubular housing having a first open end portion for positioning through a body wall and a second opposite open end portion for introduction and removal of auxiliary surgical devices therethrough while said first open end portion is positioned through the body wall; and an elongate trocar spike assembly concentrically insertable through said second open end and comprising: a cylindrical housing including an inboard end and an outboard open end extendable through said second opposite open end of said trocar housing, said cylindrical housing defining a sharp needle point at the outboard-most end of said cylindrical housing; coring prevention means received within said cylindrical housing and biased for extension outboard of said needle point for urging solid material interior of said body wall away from said needle point and said open end of said cylindrical housing while said cylindrical housing is moved through said solid material interior of said body wall; and means for applying a concentric bias between said cylindrical housing and said coring prevention means, wherein said coring prevention means includes a beveled, tissue-penetrating end extending though said open end of said cylindrical housing.
Claim 11
Dependent Claim
177 words
A surgical instrument comprising: an elongated trocar tubular housing having a first open end portion for positioning through a body wall and a second opposite open end portion for introduction and removal of auxiliary surgical devices therethrough while said first open end portion is positioned through the body wall; and an elongate trocar spike assembly concentrically insertable through said second open end and comprising: a cylindrical housing including an inboard end and an outboard open end extendable through said second opposite open end of said trocar housing, said cylindrical housing defining a sharp needle point at the outboard-most end of said cylindrical housing; and coring prevention means received within said cylindrical housing and biased for extension outboard of said needle point for urging solid material interior of said body wall away from said needle point and said open end of said cylindrical housing while said cylindrical housing is moved through said solid material interior of said body wall, wherein said coring prevention means includes a beveled, tissue-penetrating end extending through said open end of said cylindrical housing.
Claim 12
Dependent Claim
177 words
A surgical instrument comprising: an elongated trocar tubular housing having a first open end portion for positioning through a body wall and a second opposite open end portion for introduction and removal of auxiliary surgical devices therethrough while said first open end portion is positioned through the body wall; and an elongate trocar spike assembly concentrically insertable through said second open end and comprising: a cylindrical housing including an inboard end and an outboard open end extendable through said second opposite open end of said trocar housing, said cylindrical housing defining a sharp needle point at the outboard-most end of said cylindrical housing; and coring prevention means received within said cylindrical housing and biased for extension outboard of said needle point for urging solid material interior of said body wall away from said needle point and said open end of said cylindrical housing while said cylindrical housing is moved through said solid material interior of said body wall, wherein said coring prevention means includes a beveled, tissue-penetrating end extending through said open end of said cylindrical housing.
Claim 13
Dependent Claim
162 words
A surgical trocar instrument for penetration through a body wall and into a bodily cavity the instrument comprising: a cylindrical housing including an inboard end and an outboard open end, said cylindrical housing defining an elliptical configuration terminating in a sharp needle point at the outboard-most end of said cylindrical housing; coring prevention means received within said cylindrical housing and biased for extension outboard of said needle point for urging solid material interior of said cavity away from said needle point and said open end of said cylindrical housing while said cylindrical housing is moved through said solid material interior of said cavity; and means for applying a concentric bias between said cylindrical housing and said coring prevention means, wherein said coring prevention means includes a plow-shaped end extending though said open end of said cylindrical housing, said beveled, tissue-penetrating end comprising a plurality of face members terminating in a blunt nose portion and a rib element separating said contoured face members.
Claim 14
Dependent Claim
162 words
A surgical trocar instrument for penetration through a body wall and into a bodily cavity the instrument comprising: a cylindrical housing including an inboard end and an outboard open end, said cylindrical housing defining an elliptical configuration terminating in a sharp needle point at the outboard-most end of said cylindrical housing; coring prevention means received within said cylindrical housing and biased for extension outboard of said needle point for urging solid material interior of said cavity away from said needle point and said open end of said cylindrical housing while said cylindrical housing is moved through said solid material interior of said cavity; and means for applying a concentric bias between said cylindrical housing and said coring prevention means, wherein said coring prevention means includes a plow-shaped end extending though said open end of said cylindrical housing, said beveled, tissue-penetrating end comprising a plurality of face members terminating in a blunt nose portion and a rib element separating said contoured face members.
Claim 15
Dependent Claim
160 words
A surgical trocar spike for penetration through a body wall and into a bodily cavity, the trocar spike comprising: a cylindrical housing including an inboard end and an outboard open end, said cylindrical housing defining a sharp needle point at the outboard-most end of said cylindrical housing; and coring prevention means received within said cylindrical housing and biased for extension outboard of said needle point for urging solid material interior of said body wall away from said needle point and said open end of said cylindrical housing while said cylindrical housing is moved through said solid material interior of said body wall; and means for applying a concentric bias between said cylindrical housing and said coring prevention means, wherein said coring prevention means includes a beveled, tissue-penetrating end extending though said open end of said cylindrical housing, said tissue penetrating end comprising a plurality of face members terminating in a blunt nose portion and converging to define a rib element.
Claim 16
Dependent Claim
160 words
A surgical trocar spike for penetration through a body wall and into a bodily cavity, the trocar spike comprising: a cylindrical housing including an inboard end and an outboard open end, said cylindrical housing defining a sharp needle point at the outboard-most end of said cylindrical housing; and coring prevention means received within said cylindrical housing and biased for extension outboard of said needle point for urging solid material interior of said body wall away from said needle point and said open end of said cylindrical housing while said cylindrical housing is moved through said solid material interior of said body wall; and means for applying a concentric bias between said cylindrical housing and said coring prevention means, wherein said coring prevention means includes a beveled, tissue-penetrating end extending though said open end of said cylindrical housing, said tissue penetrating end comprising a plurality of face members terminating in a blunt nose portion and converging to define a rib element.
Claim 17
Dependent Claim
142 words
A surgical trocar spike for penetration through a body wall and into a body cavity, the spike comprising: a cylindrical housing including an inboard end and an outboard open end extendable through said second opposite open end of said trocar housing, said cylindrical housing defining a sharp needle point at the outboard-most end of said cylindrical housing; and coring prevention means received within said cylindrical housing and biased for extension outboard of said needle point for urging solid material interior of said body wall away from said needle point and said open end of said cylindrical housing while said cylindrical housing is moved through said solid material interior of said body wall wherein said coring prevention means includes a beveled, tissue penetrating end comprising a plurality of face members terminating in a blunt nose portion and converging to define a rib element.
Claim 18
Dependent Claim
142 words
A surgical trocar spike for penetration through a body wall and into a body cavity, the spike comprising: a cylindrical housing including an inboard end and an outboard open end extendable through said second opposite open end of said trocar housing, said cylindrical housing defining a sharp needle point at the outboard-most end of said cylindrical housing; and coring prevention means received within said cylindrical housing and biased for extension outboard of said needle point for urging solid material interior of said body wall away from said needle point and said open end of said cylindrical housing while said cylindrical housing is moved through said solid material interior of said body wall wherein said coring prevention means includes a beveled, tissue penetrating end comprising a plurality of face members terminating in a blunt nose portion and converging to define a rib element.
Claim 19
Dependent Claim
214 words
A surgical instrument introducible through a trocar, said trocar having an elongate tubular housing having a first open end portion for positioning through a body wall and a second opposite open end portion for introduction and removal of auxiliary surgical devices therethrough while said first open end portion is positioned through the body wall, said surgical instrument comprising: a cylindrical housing including an inboard end and an outboard open end extendable through said second opposite open end of said trocar housing, said cylindrical housing defining an elliptical configuration terminating in a sharp needle point at the outboard-most end of said cylindrical housing; coring prevention means received within said cylindrical housing and biased for extension outboard of said needle point for urging solid material interior of said body wall away from said needle point and said open end of said cylindrical housing while said cylindrical housing is moved through said solid material interior of said body wall; and means for applying a concentric bias between said cylindrical housing and said coring prevention means, wherein said coring prevention means includes a beveled, tissue-penetrating end extending though said open end of said cylindrical housing, said beveled, tissue-penetrating end comprising a plurality of face members terminating in a blunt nose portion and converging to define a rib element.
Claim 20
Dependent Claim
214 words
A surgical instrument introducible through a trocar, said trocar having an elongate tubular housing having a first open end portion for positioning through a body wall and a second opposite open end portion for introduction and removal of auxiliary surgical devices therethrough while said first open end portion is positioned through the body wall, said surgical instrument comprising: a cylindrical housing including an inboard end and an outboard open end extendable through said second opposite open end of said trocar housing, said cylindrical housing defining an elliptical configuration terminating in a sharp needle point at the outboard-most end of said cylindrical housing; coring prevention means received within said cylindrical housing and biased for extension outboard of said needle point for urging solid material interior of said body wall away from said needle point and said open end of said cylindrical housing while said cylindrical housing is moved through said solid material interior of said body wall; and means for applying a concentric bias between said cylindrical housing and said coring prevention means, wherein said coring prevention means includes a beveled, tissue-penetrating end extending though said open end of said cylindrical housing, said beveled, tissue-penetrating end comprising a plurality of face members terminating in a blunt nose portion and converging to define a rib element.
Claim 21
Dependent Claim
214 words
A surgical instrument comprising: an elongated trocar tubular housing having a first open end portion for positioning through a body wall and a second opposite open end portion for introduction and removal of auxiliary surgical devices therethrough while said first open end portion is positioned through the body wall; and an elongate trocar spike assembly concentrically insertable thorough said second open end and comprising: a cylindrical housing including an inboard end and an outboard open extendable through said second opposite open end of said trocar housing, said cylindrical housing defining a sharp needle point at the outboard-most end of said cylindrical housing; coring prevention means received within said cylindrical housing and biased for extension outboard of said needle point for urging solid material interior of said body wall away from said needle point and said open end of said cylindrical housing while said cylindrical housing is moved through said solid material interior of said body wall; and means for applying a concentric bias between said cylindrical housing and said coring prevention means, wherein said coring prevention means includes a beveled, tissue-penetrating end extending through said open end of said cylindrical housing, said beveled, tissue-penetrating end comprising a plurality of face members terminating in a blunt nose portion and converging to define a rib element.
Claim 22
Dependent Claim
214 words
A surgical instrument comprising: an elongated trocar tubular housing having a first open end portion for positioning through a body wall and a second opposite open end portion for introduction and removal of auxiliary surgical devices therethrough while said first open end portion is positioned through the body wall; and an elongate trocar spike assembly concentrically insertable thorough said second open end and comprising: a cylindrical housing including an inboard end and an outboard open extendable through said second opposite open end of said trocar housing, said cylindrical housing defining a sharp needle point at the outboard-most end of said cylindrical housing; coring prevention means received within said cylindrical housing and biased for extension outboard of said needle point for urging solid material interior of said body wall away from said needle point and said open end of said cylindrical housing while said cylindrical housing is moved through said solid material interior of said body wall; and means for applying a concentric bias between said cylindrical housing and said coring prevention means, wherein said coring prevention means includes a beveled, tissue-penetrating end extending through said open end of said cylindrical housing, said beveled, tissue-penetrating end comprising a plurality of face members terminating in a blunt nose portion and converging to define a rib element.
Claim 23
Dependent Claim
191 words
A surgical instrument comprising: an elongated trocar tubular housing having a first open end portion for positioning through a body wall and a second opposite open end portion introduction and removal of auxiliary surgical devices therethrough while said first open end portion is positioned through the body wall; an elongate trocar spike assembly concentrically insertable through said second open end and comprising: a cylindrical housing including an inboard end and an outboard open end extendable through said second opposite open end of said trocar housing, said cylindrical housing defining a sharp needle point at the outboard-most end of said cylindrical housing; and coring prevention means received within said cylindrical housing and biased for extension outboard of said needle point for urging solid material interior of said body wall away from said needle point and said open end of said cylindrical housing while said cylindrical housing is moved through said body wall, wherein said coring prevention means includes a beveled, tissue-penetrating end extending through said open end of cylindrical housing, said plow-shaped end comprising a plurality of face members terminating in a blunt nose portion and converging to define a rib element.
Claim 24
Dependent Claim
191 words
A surgical instrument comprising: an elongated trocar tubular housing having a first open end portion for positioning through a body wall and a second opposite open end portion introduction and removal of auxiliary surgical devices therethrough while said first open end portion is positioned through the body wall; an elongate trocar spike assembly concentrically insertable through said second open end and comprising: a cylindrical housing including an inboard end and an outboard open end extendable through said second opposite open end of said trocar housing, said cylindrical housing defining a sharp needle point at the outboard-most end of said cylindrical housing; and coring prevention means received within said cylindrical housing and biased for extension outboard of said needle point for urging solid material interior of said body wall away from said needle point and said open end of said cylindrical housing while said cylindrical housing is moved through said body wall, wherein said coring prevention means includes a beveled, tissue-penetrating end extending through said open end of cylindrical housing, said plow-shaped end comprising a plurality of face members terminating in a blunt nose portion and converging to define a rib element.
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) | 1997-11-28 | 1998-05-30 | 1998-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-11-28 | 2002-05-30 | 2002-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-11-28 | 2006-05-30 | 2006-11-29 | $7700.00 | Window Closed / Lapsed |