US4174816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sterile surgical cord and tube retractor
Assignee: University of Minnesota System
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Filing: 1973-06-06
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Granted: 1979-11-20
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Expires: 1993-06-06
Abstract
Abstract A sterile surgical cord and tube retractor for use by surgeons while operating to maintain accessories, such as suction tubes and cauterizing forceps, within easy reach of the surgeon without obstructing the surgical field with tubing and cord when not in use. The device comprises a housing adapted to be supported on the usual instrument table positioned adjacent the surgical field, and in turn supports the instrument tray. A plurality of spring tensioned retractors within the housing separately hold lengths of tubing and cord, permitting them to be withdrawn from the housing for use and then retracted back into the housing.
Inventors
- 👤 Leslie C. Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:29
CPC Classifications
B; B65; B65H; B65H75/00; B65H75/02; B65H75/34; B65H75/36; A; A61; A61B; A61B90/00; A61B90/50
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
325 words
A retractor for elongated flexible linear tube and cord elements used in surgical procedures, said retractor comprising: (A) a horizontally disposed housing having vertical end walls and side walls and a removable top tray, (B) a plurality of stacked horizontal parallel vertically spaced apart retractor plates within said housing, (C) a plurality of laterally spaced apart peripherally grooved wheels fixedly mounted on the top side of each of said retractor plates adjacent one end thereof, said wheels being journaled for rotation about vertical axes, (D) a plurality of laterally spaced apart peripherally grooved wheels movably mounted on the top side of each of said retractor plates adjacent the opposite end thereof for reciprocable movement relative to said fixedly mounted wheels, said wheels being journaled for rotation about vertical axes, (E) a plurality of longitudinal slots in each of said retractor plates in number corresponding to said reciprocable wheels, said reciprocable wheels being mounted for movement in said slots, (F) resilient tension means connected to said reciprocable wheels for normally urging said wheels away from said fixedly mounted wheels, (G) a further peripherally grooved wheel fixedly mounted on the top side of each of said retractor plates adjacent one side edge of said plate between the first mentioned fixedly mounted wheels and reciprocable wheels, (H) a first opening in said housing for entry of a linear element to each of said retractor plates, (I) fastening means on each of said retractor plates adjacent said entry opening for securing a linear element to each plate, whereby, when said linear element is threaded in a serpentine path around said reciprocable and fixedly mounted wheels, said fastening means resists pulling tension on the free end of said element sufficient to cause movement of the reciprocable wheels toward the fixedly mounted wheels resulting in shortening of the serpentine path and extension of the element, and (J) a further exit opening in said housing adjacent each said further fixedly mounted wheel.
Claim 2
Dependent Claim
325 words
A retractor for elongated flexible linear tube and cord elements used in surgical procedures, said retractor comprising: (A) a horizontally disposed housing having vertical end walls and side walls and a removable top tray, (B) a plurality of stacked horizontal parallel vertically spaced apart retractor plates within said housing, (C) a plurality of laterally spaced apart peripherally grooved wheels fixedly mounted on the top side of each of said retractor plates adjacent one end thereof, said wheels being journaled for rotation about vertical axes, (D) a plurality of laterally spaced apart peripherally grooved wheels movably mounted on the top side of each of said retractor plates adjacent the opposite end thereof for reciprocable movement relative to said fixedly mounted wheels, said wheels being journaled for rotation about vertical axes, (E) a plurality of longitudinal slots in each of said retractor plates in number corresponding to said reciprocable wheels, said reciprocable wheels being mounted for movement in said slots, (F) resilient tension means connected to said reciprocable wheels for normally urging said wheels away from said fixedly mounted wheels, (G) a further peripherally grooved wheel fixedly mounted on the top side of each of said retractor plates adjacent one side edge of said plate between the first mentioned fixedly mounted wheels and reciprocable wheels, (H) a first opening in said housing for entry of a linear element to each of said retractor plates, (I) fastening means on each of said retractor plates adjacent said entry opening for securing a linear element to each plate, whereby, when said linear element is threaded in a serpentine path around said reciprocable and fixedly mounted wheels, said fastening means resists pulling tension on the free end of said element sufficient to cause movement of the reciprocable wheels toward the fixedly mounted wheels resulting in shortening of the serpentine path and extension of the element, and (J) a further exit opening in said housing adjacent each said further fixedly mounted wheel.
Claim 3
Dependent Claim
71 words
A retractor according to claim 1 further characterized in that braking means are mounted on each of said retractor plates adjacent to each said further fixedly mounted wheel, each said braking means comprising: (A) a braking element engageable with the peripheral groove of said further wheel, and (B) handle means extending to the exterior of said housing for moving said braking element into and out of engagement with said respective wheel.
Claim 4
Dependent Claim
100 words
A retractor according to claim 1 further characterized in that: (A) said reciprocable wheels for each retractor plate are movable together, (B) a pair of parallel horizontal rods are mounted below each retractor plate closely spaced therefrom and parallel thereto, (C) a trolley block is supported on each pair of said rods for slideable movement therealong, (D) each of said reciprocable wheels for each retractor plate is mounted for rotation on a stub shaft extending through one of said parallel slots into said trolley block, and (E) said resilient tension means is connected to said wheels through said trolley block.
Claim 5
Dependent Claim
54 words
A retractor according to claim 1 further characterized in that a separator plate is disposed within said housing between each pair of retractor plates, said separator plate being parallel to the retractor plates and closely spaced from the grooved wheels of the next underlying retractor plate to prevent dislodgment of the linear element therefrom.
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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) | 1982-11-19 | 1983-05-21 | 1983-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-19 | 1987-05-21 | 1987-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-19 | 1991-05-21 | 1991-11-20 | $7700.00 | Window Closed / Lapsed |