EP0455282B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Surgical retractor in particular for cholecystectomy
Assignee: Individual
•
Filing: 1991-03-29
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Granted: 1994-12-28
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Expires: 2011-03-29
Abstract
Abstract The retractor (1) is of the autostatic type and comprises a retractor polygonal frame (2) associated with a plurality of dilators (4) which when inserted deeply into the patient's body maintain the edges of the incision open and the viscera of the effective operation area suitably withdrawn. The sides (5) of the the frame (2) are hingedly connected to each other and two opposite hinges have their axes converging to a point located at the side of the frame (2) opposite to the dilators (4), so that the latter are spreaded out at their free ends to a greater degree that at the ends fastened to the frame (2).
Inventors
- 👤 Giuseppe Amato
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 21:56
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/02; A61B17/0293; A61B90/00; A61B90/30; A61B2090/306; A61B90/39; A61B2090/3937; A61B2090/3941
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
155 words
A surgical retractor (1) particularly for cholecystectomy, comprising: - a retractor frame (2) formed by a series of sides (5) connected to each other by hinges (6, 6A) to form an articulated polygonal frame; - means for locking said retractor frame (2) in an autostatic position operating on a pair of opposite hinges (6A); - a plurality of dilators (4) secured to the sides (5) of the retractor frame (2), said dilators (4) being of substantially thin plate form and extending along an axis which cuts the retractor frame (2), characterised in that the axes (16A) of a pair of opposite hinges (6A) converge at a point situated opposite to the dilators (4) relative to the retractor frame (2), and in that at said hinges (6A) with converging axes the hinged sides (5) are prolonged to form a pair of arms (11) approachable to each other to widen and hence open the retractor frame (2).
Claim 2
Dependent Claim
22 words
A surgical retractor as claimed in claim 1, characterised in that the converging axes (16A) form an angle between 50° and 60°.
Claim 3
Dependent Claim
34 words
A surgical retractor as claimed in claim 1, characterised in that the means for locking said retractor frame (2) in an autostatic position are arranged at said opposite hinges (6A) having the converging axes.
Claim 4
Dependent Claim
55 words
A surgical retractor as claimed in claim 1 or 3, characterised in that said locking means comprise two cams (7) manually operable by respective levers (10) and acting via respective pins (8A) of the hinges (6A) on respective pairs of toothed jaws (9) rigid with two mutually hinged sides (5) of the retractor frame (2).
Claim 5
Dependent Claim
32 words
A surgical retractor as claimed in claim 1, characterised in that the number of dilators (4) is at least one less than the number of sides (5) of the retractor frame (2).
Claim 6
Dependent Claim
28 words
A surgical retractor as claimed in claim 1 or 5, characterised in that the dilators (4) are removably secured to the sides (5) of the retractor frame (2).
Claim 7
Dependent Claim
34 words
A surgical retractor as claimed in one of claims 1, 5 or 6, characterised in that the dilators (4) have a substantially arcuate cross-section with its concavity facing the interior of the retractor (1).
Claim 8
Dependent Claim
34 words
A surgical retractor as claimed in one of claims 1, 5, 6 or 7, characterised in that the dilators (4) are constructed of a material capable of emitting light when traversed by light rays.
Claim 9
Dependent Claim
28 words
A surgical retractor as claimed in one of claims 1, 5, 6, 7 or 8, characterised in that supplementary dilators (14) are hingedly supported by said dilators (4).
Claim 10
Dependent Claim
52 words
A surgical retractor as claimed in claim 9, characterised in that the supplementary dilators (14) are of triangular shape and are hinged at a vertex so that when the hinged dilators (4, 14) are superposed one edge of the supplementary dilators (14) is parallel to one edge of the supporting dilators (4).
References Cited (Backward Citations)
No citation records indexed.
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