EP0684016A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Optical trocar
Assignee: United States Surgical Corp
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Filing: 1995-05-26
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Granted: —
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Expires: 2015-05-26
Abstract
Abstract A blade actuating assembly 36 is provided which permits selective reciprocal movement of a tissue cutting blade 34 positioned at a distal end of an optical trocar assembly 10 from a non-deployed position to a deployed position and back to a non-deployed position. The trocar assembly has an optical obturator 12 which includes a sleeve having a longitudinal bore 24 between a proximal end and a distal end. The longitudinal bore of the sleeve is configured to receive at least a portion of an endoscope 16 or like image transferring system. An objective optical member 28, such as an optical window is positioned at the distal end of the sleeve and is provided to permit optical images to pass into the longitudinal bore of the sleeve and to permit illumination light to pass to the surgical site.
Inventors
- 👤 Carl T. Urban
- 👤 Marc J. Theroux
- 👤 Maria E. Lopez-Isa
- 👤 Jo Ann Bryan
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 12:31
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/34; A61B17/3417; A61B17/3494; A61B17/3496; A61B90/00; A61B90/30; A61B2090/306; A61B90/36; A61B90/361
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
96 words
Apparatus for penetrating body tissue comprising: a cannula having a longitudinal bore; an obturator removably positioned in said bore of said cannula, said obturator having an objective optical member positioned thereon; a cutting blade movably positioned at a distal end of said obturator; and an actuating mechanism operatively connected to said cutting blade; wherein said actuating mechanism is movable between first and second positions, such that movement of said actuating mechanism from said first position to said second position moves said blade from a retracted position to an extended position and back to said retracted position.
Claim 2
Dependent Claim
36 words
The apparatus according to claim 1, wherein said actuating mechanism includes a trigger operatively connected to a blade advancing mechanism which are configured to selectively reciprocate said blade between said retracted position and said extended position.
Claim 3
Dependent Claim
41 words
The apparatus according to claim 1 or 2further comprising an image transmitting member positioned within said obturator and adjacent said objective optical member for transmitting images passed through said objective optical member to a proximal end of said obturator for viewing.
Claim 4
Independent Claim
26 words
The apparatus according to any of the preceding claims, wherein said image transmitting member comprises an endoscope removably positioned within a longitudinal bore in said obturator.
Claim 5
Independent Claim
19 words
The apparatus according to any of the preceding claims, wherein said objective optical member includes a dome-shaped outer surface.
Claim 6
Dependent Claim
26 words
The apparatus according to claim 5, wherein said cutting blade is arcuate in shape to conform to said dome-shaped outer surface of said objective optical member.
Claim 7
Independent Claim
157 words
The apparatus according to any of the preceding claims, wherein said actuating mechanism comprises: at least one blade pusher member having proximal and distal end portions, and being longitudinally movable; a blade drive mechanism connected to said proximal end portion of said at least one blade pusher member and configured to alternately move the blade between deployed and non-deployed positions; a blade drive latch configured to facilitate movement of said blade drive mechanism to an armed position and to releasably maintain said blade drive mechanism in said armed position; and a trigger operatively connected to said blade drive latch and movable relative to said blade drive mechanism such that movement of said trigger a first predetermined distance causes said blade drive latch to move said blade drive mechanism to said armed position, and movement of said trigger a second predetermined distance releases said blade drive latch from said blade drive mechanism to actuate said blade drive mechanism.
Claim 8
Independent Claim
65 words
The apparatus according to any of the preceding claims, wherein said actuating mechanism provides two step operation for deploying said blade, wherein in a first step, actuation of said trigger causes said blade advancing mechanism to move to an armed position, and in a second step said blade advancing mechanism is released from said armed position upon movement of said trigger to said actuating position.
Claim 9
Dependent Claim
71 words
An obturator for facilitating insertion into body tissue under direct observation, which comprises: a sleeve having a proximal end, a distal end and a longitudinal bore; a dome-shaped objective optical member positioned at said distal end of said sleeve for collecting optical images for conveyance into said longitudinal bore; and a blade mounted in a recess in said objective optical member and movable between a deployed position and a non-deployed position.
Claim 10
Dependent Claim
15 words
The obturator according to claim 9, wherein said objective optical member is an optical window.
Claim 11
Dependent Claim
15 words
The obturator according to claim 10, wherein said objective optical member is an optical lens.
Claim 12
Dependent Claim
30 words
The obturator according to claim 9, 10 or 11, further comprising an actuating mechanism operatively connected to said blade for selectively reciprocating said blade between said deployed and non-deployed positions.
Claim 13
Dependent Claim
49 words
The obturator according to any one of claims 9 to 12, further comprising an image transferring member positioned at least partially within said longitudinal bore of said sleeve and adjacent said objective optical member for transmitting images conveyed into said longitudinal bore to said proximal end of said sleeve.
Claim 14
Dependent Claim
20 words
The obturator according to claim 13, wherein said image transferring member comprises an endoscope removably positioned within said longitudinal bore.
References Cited (Backward Citations)
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