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EP0612506A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Surgical scalpel for making controlled depth and width inscisions

Assignee: Becton Dickinson and Co
•
Filing: 1994-02-09
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Granted: —
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Expires: 2014-02-09
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Abstract

Abstract A surgical scalpel (60) capable of making a controlled depth and width incision for inserting a trocar during endoscopic surgery. The scalpel (60) includes a handle (61) and a shield (62) slidably mounted on the handle between an extended position and a retracted position. When the shield is in the retracted position, a predetermined portion of a blade (80) mounted on the handle extends beyond the distal end (73) of the shield. The portion of blade extending beyond the distal end (73) of the shield is correlated to the position of the shank (63) in the shield so that a controlled depth and width incision can be made using the portion of the blade extending beyond the distal end of the shield. The distal end of the shield, therefore, provides a means for stopping the further insertion of the blade into a cavity wall and causes a predetermined depth and width starter incision to be made.

Inventors

  • 👤 Craig D. Newman

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-23 11:11
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3209; A61B17/3211; A61B17/34

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 55 words
A surgical scalpel comprising: a handle having a distal and proximal end and a boss located at the distal end; and a blade having a head portion with a point, a first and second cutting edge converging to said point, and an opening for receiving said boss when said blade is attached to said handle.
Claim 2
Dependent Claim 18 words
A surgical scalpel according to Claim 1, wherein said head portion has a length of at least 14mm.
Claim 3
Dependent Claim 18 words
A surgical scalpel according to Claim 1, wherein said head portion has a width of at least 7mm.
Claim 4
Dependent Claim 35 words
A surgical scalpel according to Claim 1, wherein said blade includes a foot at the proximal end, and said handle includes a slanted abutment spaced from said boss for receiving said foot of said blade.
Claim 5
Dependent Claim 14 words
A surgical scalpel according to Claim 1, wherein said blade has an arrow-shaped point.
Claim 6
Dependent Claim 69 words
A surgical scalpel comprising: a handle; a shield having a distal end slidably mounted on said handle to slide between an extended position and a retracted position; means for latching said shield on said handle in the retracted position so that said blade extends beyond said distal end of said shield by a predetermined distance; and a blade having a first and second cutting edge attached to said handle.
Claim 7
Dependent Claim 14 words
A surgical scalpel according to Claim 6, wherein said blade has an arrow-shaped head.
Claim 8
Dependent Claim 51 words
A surgical scalpel according to Claim 6, wherein said latching means comprises: an opening on said shield having a pair of indents; and a resilient button on said handle having a pair of shoulders, wherein said shoulders mate with said pair of indents to lock said shield in the retracted position.
Claim 9
Dependent Claim 34 words
A surgical scalpel according to Claim 6, further comprising means for locking said shield on said handle in a fully-extended and locked position so that said blade is surrounded by said shield for disposal.
Claim 10
Dependent Claim 34 words
A surgical scalpel according to Claim 9, wherein said locking means includes a locking abutment on said handle that engages a raised lip on said shield when said shield is in the fully-extended position.

References Cited (Backward Citations)

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