Penetrating tip for trocar assembly
First Claim
1. A laparoscopic instrument comprising:
- a) a trocar assembly including an elongated sleeve having an open distal end, b) an elongated shaft movably disposed within said sleeve and including a penetrating tip secured to one end thereof, c) said penetrating tip including an apex and a base and an exterior surface extending there between, d) said exterior surface having a cross section comprising a substantially elliptical configuration extending along at least a portion of said penetrating tip between said base and said apex, and e) said cross sectional configuration of said exterior surface being oriented generally perpendicular to a central longitudinal axis of said elongated shaft.
5 Assignments
0 Petitions
Accused Products
Abstract
A tissue penetrating instrument of the type used in the medical field and which may or may not be embodied in the form of an obturator associated with a trocar assembly, wherein the instrument includes an elongated shaft having a penetrating tip mounted on one end thereof. The penetrating tip includes a base secured to the one end of the shaft and a distal extremity spaced longitudinally outward from the base and formed into an apex which may be defined by a point or other configuration specifically structured to facilitate penetration or puncturing of bodily tissue. The apex may be substantially aligned with a linear extension of the central longitudinal axis of the shaft or alternatively, may be spaced laterally outward or off-set from the central longitudinal axis of the shaft. The penetrating tip further includes an exterior surface extending continuously between the apex and the base and configured to facilitate puncturing of the tissue and an enlargement of an access opening formed in the tissue, in a manner which facilitates separation of the tissue and minimizes cutting, severing or otherwise damaging the contiguous bodily tissue surrounding the access opening.
106 Citations
2 Claims
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1. A laparoscopic instrument comprising:
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a) a trocar assembly including an elongated sleeve having an open distal end, b) an elongated shaft movably disposed within said sleeve and including a penetrating tip secured to one end thereof, c) said penetrating tip including an apex and a base and an exterior surface extending there between, d) said exterior surface having a cross section comprising a substantially elliptical configuration extending along at least a portion of said penetrating tip between said base and said apex, and e) said cross sectional configuration of said exterior surface being oriented generally perpendicular to a central longitudinal axis of said elongated shaft.
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2. An instrument structured for use in laparoscopic surgery, said instrument comprising:
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a) a trocar assembly including an elongated sleeve having an open distal end and an elongated shaft disposable within said sleeve, b) a penetrating tip secured to a distal end of said shaft and disposable in a predetermined operative position relative to said sleeve, c) said penetrating tip comprising a base and a apex and an exterior surface extending therebetween, d) said operative position comprising a portion of said penetrating tip disposed in substantially closing relation to said open distal end, and e) said exterior surface having a cross section comprising a substantially elliptical configuration extending along at least a portion of said penetrating tip between said base and said apex.
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Specification