US3729006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable surgical retractors
Assignee: Individual
•
Filing: 1971-05-27
•
Granted: 1973-04-24
•
Expires: 1991-05-27
Abstract
Abstract A hand-held surgical retractor fabricated of resilient plastic material, the retractor being light-weight, glare-free and functionally superior to existing metallic instruments. The retractor includes a non-skid blade whose inner surface is slightly concave, the blade having an array of circular apertures therein whereby when the blade is pressed against tissue, the tissue bellies into the blade to provide a contact therebetween which resists displacement even when low pulling forces are exerted on the retractor.
Inventors
- 👤 J Wilder
- 👤 M Kanbar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:12
CPC Classifications
A; A61; A61L; A61L31/00; A61L31/04; A61L31/06; A61B; A61B17/00; A61B17/02; A61L31/048
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
145 words
A light-weight, glare-free, hand-held surgical retractor adapted securely to engage a bone-free tissue surface without injury thereto, said retractor comprising the following components: a blade, a handle, and a shank interconnecting the handle to the blade, all of the components being formed integrally of a resilient, high-strength, opaque polymeric plastic material having a non-reflective surface to prevent glare from light impinging thereon, the blade having a generally rectangular shape, said shank being attached to the blade adjacent the center of one the long edges thereof and extending at approximately a right angle from the general plane of the blade, said rectangular blade being slightly concave with respect to tissue engageable thereby, and having an array of apertures formed therein, whereby when the blade is manually pulled against the bone-free tissue surface, the tissue bellies into the blade to form a contact therebetween which resists displacement.
Claim 2
Dependent Claim
145 words
A light-weight, glare-free, hand-held surgical retractor adapted securely to engage a bone-free tissue surface without injury thereto, said retractor comprising the following components: a blade, a handle, and a shank interconnecting the handle to the blade, all of the components being formed integrally of a resilient, high-strength, opaque polymeric plastic material having a non-reflective surface to prevent glare from light impinging thereon, the blade having a generally rectangular shape, said shank being attached to the blade adjacent the center of one the long edges thereof and extending at approximately a right angle from the general plane of the blade, said rectangular blade being slightly concave with respect to tissue engageable thereby, and having an array of apertures formed therein, whereby when the blade is manually pulled against the bone-free tissue surface, the tissue bellies into the blade to form a contact therebetween which resists displacement.
Claim 3
Dependent Claim
28 words
A retractor as set forth in claim 1, wherein said shank is formed along its sides with raised reinforcing ribs which merge into the edges of the blade.
Claim 4
Dependent Claim
70 words
A retractor as set forth in claim 2, wherein said handle is in the form of a pistol grip which extends at an angle of about 30* with respect to said shank on the same side thereof as the blade, whereby when the handle is held by the fingers of a hand to pLace the blade in the vertical plane, the shank lies in a horizontal plane above the hand.
Claim 5
Dependent Claim
29 words
A retractor as set forth in claim 1, wherein the walls of said apertures are tapered to flare from the to the surface of the blade opposite the shank.
Claim 6
Dependent Claim
24 words
A retractor as set forth in claim 1, wherein said shank is provided with a pair of lateral ears to serve as thumb rests.
Claim 7
Dependent Claim
28 words
A retractor as set forth in claim 1, wherein said handle has a flat triangular configuration and is provided with an elongated opening parallel to the base thereof.
References Cited (Backward Citations)
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US1550403A
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US2547273A
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US2685880A
Cited
US2749172A
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US2863444A
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US3364919A
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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) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |