US20020183593A1 Expired / Lapsed US ⏱️ 0.0 years remaining

Cannula-based surgical instrument and method

Assignee: Individual

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Filing: 2002-06-17

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Granted: —

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Expires: 2022-06-17

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Abstract

Abstract A retractor and a surgical tool are positioned within a cannula, and a dissection cradle of the retractor is positioned at the distal end of the cannula. The retractor includes a dissection cradle that is resiliently supported along an axis skewed relative to the axis of the cannula. The dissection cradle, in operation, is extended to cradle the target vessel, and the retractor may be fully extended to urge the vessel away from the axis of the cannula to isolate a side branch for exposure to a surgical tool. The retractor includes a hollow support and a spray nozzle disposed in the distal end of the retractor to form an irrigation system and lens washer that can be selectively positioned to direct the spray of irrigation fluid at a remote surgical site or at an endoscopic lens.

Inventors

👤 Albert Chin
👤 John Lunsford
👤 Tenny Chang
👤 Jeffrey Baxter

Bibliographic Details

Application Number —

Jurisdiction US

Data Source google_patents

Last Synchronized 2026-10-23 06:30

CPC Classifications

A; A61; A61B; A61B17/00; A61B17/02; A61B17/0218; A61B1/00; A61B1/00064; A61B1/00071; A61B1/0008; A61B1/00091; A61B1/012; A61B1/015; A61B1/018; A61B1/12; A61B1/126; A61B17/00008

Claims Analysis

Total Claims: 7

Claim 1

Independent Claim 82 words

1 . Surgical apparatus comprising: an elongated cannula having an elongated axis between distal and proximal ends, and including an endoscope lumen extending between the digital as proximal ends for slidably receiving an endoscope therein; an instrument lumen extending between distal and proximal ends of the cannula in substantial diametric orientation therein; and an auxiliary lumen extending between distal and proximal ends of the cannula in substantially orthogonal orientation therein relative to the diametric orientation of the endoscope lumen and instrument lumen.

Claim 2

Dependent Claim 82 words

Claim 3

Dependent Claim 46 words

2 . Surgical apparatus according to claim 1 including a pair of auxiliary lumens extending between distal and proximal ends of the cannula in substantially diametric orientation on opposite side of, and in skewed relation to, the diametric orientation of the endoscope lumen and instrument lumen.

Claim 4

Dependent Claim 44 words

3 . Surgical apparatus according to claim 2 including elongated supports slidably disposed in the pair of auxiliary lumens to selectively extend beyond the distal end of the cannula, and including a vessel cradle mounted to traverse the distal ends of the elongated supports.

Claim 5

Dependent Claim 37 words

4 . Surgical apparatus according to claim 3 in which the vessel cradle includes a substantially U-shaped transverse segment between the elongated supports for positioning about the distal end of an endoscope received in the endoscope lumen.

Claim 6

Dependent Claim 33 words

5 . Surgical apparatus according to claim 3 including a manual control element attached to an elongated support and disposed for manually activated sliding movement thereof near the proximal end of the cannula.

Claim 7

Dependent Claim 42 words

6 . Surgical apparatus according to claim 5 including a resilient elongated support attached to the manual control element for sliding movement thereof near the proximal end of the cannula along a direction skewed relative to the elongated axis of the cannula.

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