Bladeless obturator
First Claim
Patent Images
1. A surgical obturator adapted to penetrate a body wall, comprising:
- an elongate shaft extending along an axis between a proximal end and a distal end;
a bladeless tip disposed at the distal end of the shaft the tip having an outer surface extending distally to a blunt point;
the outer surface having a pair of side sections separated by an intermediate section;
the side sections extending from the blunt point radially outwardly with progressive positions proximally along the axis;
the side sections including a distal portion in proximity to the blunt point, and a proximal portion in proximity to the shaft; and
the distal portion of the side sections being twisted radially with respect to the proximal portion of the side section.
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Accused Products
Abstract
The invention is directed towards a bladeless obturator (18) for wedging through muscle fiber layers (41, 43, 45) to safely cut through to the abdominal cavity (32) in order to apply a cannula (12). The invention comprises a bladeless obturator (18) having a rectangular tip (63) that is twisted radially.
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Citations
24 Claims
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1. A surgical obturator adapted to penetrate a body wall, comprising:
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an elongate shaft extending along an axis between a proximal end and a distal end;
a bladeless tip disposed at the distal end of the shaft the tip having an outer surface extending distally to a blunt point;
the outer surface having a pair of side sections separated by an intermediate section;
the side sections extending from the blunt point radially outwardly with progressive positions proximally along the axis;
the side sections including a distal portion in proximity to the blunt point, and a proximal portion in proximity to the shaft; and
the distal portion of the side sections being twisted radially with respect to the proximal portion of the side section. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A surgical obturator adapted to penetrate a body wall, comprising:
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an elongate shaft extending along an axis between a proximal end and a distal end;
a bladeless tip disposed at the distal end of the shaft, the tip having an outer surface with a distal portion and a proximal portion;
the outer surface of the tip in radial cross section having the general configuration of a geometric shape with a side;
the side of the geometric shape in the portion of the tip rotating in a first direction about the axis in progressive proximal radial cross sections along the axis. - View Dependent Claims (9, 10, 11, 12)
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13. A surgical obturator adapted to penetrate a body wall, comprising:
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an elongate shaft extending along an axis between a proximal end and a distal end;
a bladeless tip having an outer surface including a pair of generally opposed sections;
the outer surface having a generally geometric shape in progressive radial cross sections from a distal cross section to a proximal cross section;
the pair of generally opposed sections of the outer surface appearing as a pair of lines in each of the progressive radial cross sections; and
at least one of the pair of lines becoming increasing arcuate in the progressive radial cross sections. - View Dependent Claims (14, 15, 16, 17)
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18. A surgical obturator adapted to penetrate a body wall, comprising:
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an elongate shaft extending along an axis;
a bladeless tip coupled to the shaft and having an axis extending between a proximal end and a distal end, the tip having an outer surface with a generally conical configuration and a blunt tip;
portions of the outer surface of the tip defining at least one recess extending relative to the axis generally between the proximal end and the distal end of the tip;
- View Dependent Claims (19, 20, 21, 22, 23, 24)
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Specification