US4621619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractor having means for attachment to patient's skin
Assignee: Plastech Research and Design Ltd
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Filing: 1985-03-07
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Granted: 1986-11-11
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Expires: 2005-03-07
Abstract
Abstract The invention defines a plastics disposable, hand applied medical retractor for retracting flesh at the edges of an incision or aperture in the human or animal body. At one end the retractor has a sharply inturned hook portion on the end of which are short, sharp, triangular teeth for impaling the flesh. The retractor bows upwardly from the hook portion and back down to a pad which has an adhesive undersurface so that it can be pressed directly to the skin so as to anchor thereto to keep the pulled back flesh in the retracted position. The said bowing allows the pulled back flesh to bunch upwardly to prevent such flesh from forcing the teeth out of engagement with the flesh and also provides inherent springiness tension in the retractor when it is applied improving its performance. Instead of the pad having adhesive it may have one part touch and close fastener, the other part being previously applied to the skin by pressure sensitive adhesive.
Inventors
- 👤 David T. Sharpe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:28
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/02; A61B2017/00831; A61B2017/00951; Y; Y10; Y10S; Y10S128/00; Y10S128/15
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
156 words
A retractor for hand application and comprising (a) a rigid body portion adapted to be gripped by the fingers of one hand, (b) a head portion at one end of the body portion and comprising hook means for engaging the edge of an aperture or incision in tissue; (c) a tail portion at the other end of the body portion; and (d) pressure sensitive adhering surface on an underside surface of the tail portion, whereby said rigid body portion can be gripped by the fingers of one hand, the hook means engaged in an aperture or incision, the retractor pulled to open the aperture or incision and the tail portion fixed to a patient by the simple step of pressing the pressure sensitive adhering surface against the skin or other surface complementary to said pressure sensitive adhering surface to thereby anchor the retractor and maintain the edge of the aperture or incision in a retracted position.
Claim 2
Dependent Claim
156 words
A retractor for hand application and comprising (a) a rigid body portion adapted to be gripped by the fingers of one hand, (b) a head portion at one end of the body portion and comprising hook means for engaging the edge of an aperture or incision in tissue; (c) a tail portion at the other end of the body portion; and (d) pressure sensitive adhering surface on an underside surface of the tail portion, whereby said rigid body portion can be gripped by the fingers of one hand, the hook means engaged in an aperture or incision, the retractor pulled to open the aperture or incision and the tail portion fixed to a patient by the simple step of pressing the pressure sensitive adhering surface against the skin or other surface complementary to said pressure sensitive adhering surface to thereby anchor the retractor and maintain the edge of the aperture or incision in a retracted position.
Claim 3
Dependent Claim
26 words
A retractor according to claim 1 wherein the adhering surface of the tail portion comprises a pressure sensitive sterile adhesive covered by a removable release covering.
Claim 4
Dependent Claim
39 words
A retractor according to claim 1 wherein the tail portion comprises a two part touch and close fastener, one part of which is provided with a pressure sensitive sterile adhesive that is adapted to be applied against the skin.
Claim 5
Dependent Claim
17 words
A retractor according to claim 1 wherein the retractor rigid body portion comprises a moulded plastics component.
Claim 6
Dependent Claim
26 words
A retractor according to claim 1 wherein the said tail portion is connected to the body portion of the retractor by means of an integral hinge.
Claim 7
Dependent Claim
70 words
A retractor according to claim 1 wherein the rigid body portion comprises an elongated, bowed portion at one end of which is the hook means and at the other end of which is the said tail portion, the deformation of said bowed portion causing bunching of the retracted tissue without permitting the hook means to come out of engagement with the tissue and also providing spring resistance to the retractor.
Claim 8
Dependent Claim
52 words
A retractor according to claim 6 wherein said bowed portion is in the form of a curved strip and the hook means is a section of the strip turned sharply towards the opposite end of the strip, and the end of said section has short, spaced triangular teeth for impaling the flesh.
Claim 9
Dependent Claim
117 words
A retractor for hand application and comprising (a) a rigid body portion adapted to be gripped by the fingers of one hand, (b) a head portion at one end of the body portion and comprising hook means for engaging the edge of an aperture or incision in tissue, (c) a tail portion at the other end of the body portion, (d) means on the tail portion enabling the retractor to be anchored to the skin, (e) the said rigid body portion being bowed from the head portion to the tail portion thus enabling the tissue engaged by the hook portion to bunch when retracted while limiting the tendency of the bunched tissue to disengage the hook portion.
Claim 10
Dependent Claim
117 words
A retractor for hand application and comprising (a) a rigid body portion adapted to be gripped by the fingers of one hand, (b) a head portion at one end of the body portion and comprising hook means for engaging the edge of an aperture or incision in tissue, (c) a tail portion at the other end of the body portion, (d) means on the tail portion enabling the retractor to be anchored to the skin, (e) the said rigid body portion being bowed from the head portion to the tail portion thus enabling the tissue engaged by the hook portion to bunch when retracted while limiting the tendency of the bunched tissue to disengage the hook portion.
Claim 11
Dependent Claim
52 words
A retractor according to claim 8 wherein said bowed portion is in the form of a curved strip and the hook means is a section of the strip turned sharply towards the opposite end of the strip, and the end of the section has short, spaced triangular teeth for impaling the tissue.
Claim 12
Dependent Claim
14 words
A retractor according to claim 9 wherein the retractor comprises a moulded plastics component.
Claim 13
Dependent Claim
28 words
A retractor according to claim 1 wherein the body portion is provided with projections intermediate the ends of the body portion to which medical sutures may be tied.
Claim 14
Dependent Claim
28 words
A retractor according to claim 8 wherein the body portion is provided with projections intermediate the ends of the body portion to which medical sutures may be tied.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-11-10 | 1990-05-12 | 1990-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-10 | 1994-05-12 | 1994-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-10 | 1998-05-12 | 1998-11-11 | $7700.00 | Window Closed / Lapsed |