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US 5,667,519 AGranted
Knife for laparoscopic surgery
AssigneeRamsey Instruments Partnership, LLP
InventorDon E. Ramsey
Life of this patent
Estimating the term…
Abstract
This incision knife is used to enlarge the incision made in a laparoscopic cholecystectomy. This enlargement allows the passage of an intact gallbladder through the incision, thereby reducing the probability of gallbladder rupture. The incision knife makes a controlled cut and has a ward which protects the gall bladder from injury by the blade.
Claims6
An incision knife for enlarging an incision into which a cannula has been inserted comprising:
- a handle,
- a rectangular wing having a first and a second long edges and a first and a second short edge,
- said wing attached at said first short edge to said handle,
- a blade,
- said blade attached to said wing at said second short edge,
- a guide for orienting said knife along a cannula with said guide in contact with at least a portion of the outer surface of said cannula,
- said guide attached to said first long edge of said wing along a tangent to said guide, and
- said guide having a ward which extends beyond said blade to protect an internal organ from said blade.
5 more elements
Dependencies are inferred from the claim text.