US5176129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-retaining refractor
Assignee: Tekdyne Inc
•
Filing: 1991-03-01
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Granted: 1993-01-05
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Expires: 2011-03-01
Abstract
Abstract A disposable self-retaining skin retractor permits access to interior tissues and includes generally longitudinally extending members moveable respecting one another at a position of connection between, having tip portions remote from the connection position and separating from each other upon relative pivotal movement of the members. The retractor further preferably includes means for urging the members pivotally respective one another to separate the tip portions one from another and means for retaining the members at a position at which the tip portions are separated.
Inventors
- 👤 Stephen H. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:56
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/02; A61B17/0206; A61B17/28; A61B17/2812; A61B17/2833; A61B2017/2837
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
83 words
A retractor for holding open skin, comprising: a. a unitary piece including movably connected members having points proximate longitudinal extremities of said members separating from each other upon relative movement of said members and means for retaining said members at a position of maximum point separation when said members are urged towards said position of maximum point separation; and b. resilient elastomeric means for urging said members to move about a position of moveable connection therebetween towards said position of maximum point separation.
Claim 2
Dependent Claim
83 words
A retractor for holding open skin, comprising: a. a unitary piece including movably connected members having points proximate longitudinal extremities of said members separating from each other upon relative movement of said members and means for retaining said members at a position of maximum point separation when said members are urged towards said position of maximum point separation; and b. resilient elastomeric means for urging said members to move about a position of moveable connection therebetween towards said position of maximum point separation.
Claim 3
Dependent Claim
14 words
The retractor of claim 1 wherein said resilient elastomeric means is an endless loop.
Claim 4
Dependent Claim
24 words
The retractor of claim 2 wherein said loop is a rubber band having width contacting said rotatably connected member greater than rubber band thickness.
Claim 5
Dependent Claim
17 words
The retractor of claim 1 wherein said resilient elastomeric means exerts compressive force on said unitary piece.
Claim 6
Dependent Claim
12 words
The retractor of claim 1 wherein said unitary piece is homogeneous plastic.
Claim 7
Dependent Claim
19 words
The retractor of claim 1 wherein said connected members are connected by hinge means defined by a plastic web.
Claim 8
Dependent Claim
43 words
The retractor of claim 1 wherein said members are rotatable relative to one another within a reference plane and wherein said points are of ribbon-like configuration displaced from said reference plane and curved in at least one plane skew to said reference plane.
Claim 9
Dependent Claim
26 words
The retractor of claim 1 wherein said points move in a plane parallel to said reference plane upon relative rotation of said members respecting one another.
Claim 10
Dependent Claim
20 words
The retractor of claim 1 wherein said resilient elastomeric means lies in said reference plane and is of sinuous configuration.
Claim 11
Dependent Claim
90 words
A disposable self-retaining skin retractor permitting access to interior tissue, comprising: a. longitudinally elongated members moveable respecting one another about a position of connection therebetween, having tip portions remote from said connection position separating from each other upon relative rotary movement of said members; and b. means for biasing members respecting one another about said connection position towards a position at which said tip portions are maximally separated; wherein said connection position is a web and said longitudinally elongated members and said web are an integral single piece of plastic.
Claim 12
Dependent Claim
90 words
A disposable self-retaining skin retractor permitting access to interior tissue, comprising: a. longitudinally elongated members moveable respecting one another about a position of connection therebetween, having tip portions remote from said connection position separating from each other upon relative rotary movement of said members; and b. means for biasing members respecting one another about said connection position towards a position at which said tip portions are maximally separated; wherein said connection position is a web and said longitudinally elongated members and said web are an integral single piece of plastic.
References Cited (Backward Citations)
US1170324A
Cited
US1328624A
Cited
US2234715A
Cited
US2651300A
Cited
US2702540A
Cited
US3916907A
Cited
US4034746A
Cited
US4502485A
Cited
US4854300A
Cited
US5030224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-01-05 | 1996-07-06 | 1997-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-01-05 | 2000-07-06 | 2001-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-01-05 | 2004-07-06 | 2005-01-05 | $7700.00 | Window Closed / Lapsed |