Trocar assembly
First Claim
1. A trocar assembly comprising a shank having a distal end and a proximal end and a planar piercing blade having two opposed, substantially flat faces, two opposed side edges, and a cutting contour between said opposed side edges, said piercing blade, separate but integrally attached to said distal end of said shank, said cutting edge having a profile to enable it to freely cut through skin and underlying tissue, said shank having a first region of constant cross section and having a second region that tapers inwardly from the first region to said opposed flat faces of said piercing blade.
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Accused Products
Abstract
A trocar assembly is disclosed which includes a shank having a distal end and a proximal end, and a planar piercing blade having two substantially flat faces and a cutting contour, where the piercing blade is integrally attached to the distal end of the shank. The shank tapers inwardly towards said opposed flat faces of said piercing blade. A trocar tip protector may be disclosed that is housed within the shank and adapted to actuate between a retracted and an extended position where an actuator mechanism causes the tip protector to move to the extended position covering the blade when the tip of the trocar member has entered the patient'"'"'s body cavity. A tip. protector indicator is also disclosed that provides a visual indication of whether the tip protector is in the retracted or extended position.
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Citations
18 Claims
- 1. A trocar assembly comprising a shank having a distal end and a proximal end and a planar piercing blade having two opposed, substantially flat faces, two opposed side edges, and a cutting contour between said opposed side edges, said piercing blade, separate but integrally attached to said distal end of said shank, said cutting edge having a profile to enable it to freely cut through skin and underlying tissue, said shank having a first region of constant cross section and having a second region that tapers inwardly from the first region to said opposed flat faces of said piercing blade.
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7. A trocar assembly for guarding against accidental puncture wounds of a patient or medical personnel, said trocar assembly comprising:
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(a) a shank having a distal end and a proximal end;
(b) a planar piercing blade having two substantially flat faces and a cutting contour at and end thereof, said piercing blade separate but integrally attached to said distal end of said shank, said shank having a first region of constant cross section and having a second region that tapers inwardly from the first region to said opposed flat faces of said piercing blade;
(c) a trocar tip protector housed within the shank and adapted to actuate between a retracted and an extended position; and
(d) an actuator mechanism to cause the tip protector to move to the extended position when the tip of the trocar member has entered the patient'"'"'s body cavity to guard against accidental punctures. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A trocar assembly for guarding against accidental puncture wounds of a patient or medical personnel, said trocar assembly comprising:
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(a) a shank having a distal end and a proximal end;
(b) a piercing blade integrally attached to said distal end of said shank;
(c) a trocar tip protector housed within the shank and adapted to actuate between a retracted and an extended position, the tip protector having a plurality of protective sheath members;
(d) an actuator mechanism to cause the tip protector to move to the extended position when the tip of the trocar member has entered the patient'"'"'s body cavity to guard against accidental punctures; and
(e) a flange visible through a trocar cap as a tip protector indicator, said indicator providing a visual indication of whether the tip protector is in the retracted or extended position. - View Dependent Claims (16, 17, 18)
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Specification