Patent FR1458061A successfully refreshed from Google Patents.
US4989587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sternal retractor
Assignee: Individual
•
Filing: 1989-04-26
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Granted: 1991-02-05
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Expires: 2009-04-26
Abstract
Abstract A sternal retraction apparatus for cardiac surgery and dissection of the Internal Mammary Artery (IMA) includes a support post fastened to a surgical table rail and an extension arm connected to the support post by an adjustable connection joint for holding the apparatus over the sternum of a patient. A pair of adjustable retraction arms is connected to the support post by means of a pivotal joint which enables the apparatus to separate the sternum as well as elevate the rib cage for sternal exposure. Retractor blades connected directly to the retraction arms extend downwardly through an incision to retract the sternum.
Inventors
- 👤 Daniel K. Farley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:42
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/02; A61B17/0206
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
219 words
A sternal retraction system for spreading and elevating a sternum during surgery to provide access to organs lying under said sternum, comprising: a support means mountable to a conventional surgical table; pivot joint means connected to said support means for providing an axis of rotation in a plane above the plane of the surgical table; alignment bar means secured to said pivot joint means for bidirectionally pivoting about said axis; retraction means including at least two retraction arms slidingly disposed on said alignment bar means for spreading said sternum, said retraction means including crank adjustment means manually crankable for independent positioning of one of said arms relative to the other of said arms, said crank adjustment means moving said one arm along the longitudinal axes of said alignment bar means as the adjustment means is cranked, said retraction means elevating a first side of said sternum upon the pivoting of said alignment bar means in a first rotational direction about said axis while permitting displacement of a said retraction arm by manual cranking of said adjustment means, said retraction means alternately elevating a second side of said sternum upon the pivoting of said alignment bar means in a second rotational direction about said axis while permitting displacement of a said retraction arm by manual cranking of said adjustment means.
Claim 2
Dependent Claim
219 words
A sternal retraction system for spreading and elevating a sternum during surgery to provide access to organs lying under said sternum, comprising: a support means mountable to a conventional surgical table; pivot joint means connected to said support means for providing an axis of rotation in a plane above the plane of the surgical table; alignment bar means secured to said pivot joint means for bidirectionally pivoting about said axis; retraction means including at least two retraction arms slidingly disposed on said alignment bar means for spreading said sternum, said retraction means including crank adjustment means manually crankable for independent positioning of one of said arms relative to the other of said arms, said crank adjustment means moving said one arm along the longitudinal axes of said alignment bar means as the adjustment means is cranked, said retraction means elevating a first side of said sternum upon the pivoting of said alignment bar means in a first rotational direction about said axis while permitting displacement of a said retraction arm by manual cranking of said adjustment means, said retraction means alternately elevating a second side of said sternum upon the pivoting of said alignment bar means in a second rotational direction about said axis while permitting displacement of a said retraction arm by manual cranking of said adjustment means.
Claim 3
Dependent Claim
35 words
A sternal retraction system according to claim 1 wherein said pivot joint means includes: (1) brace block means; and (2) support brace means rotatably mounted to said brace block means for rotation about said axis.
Claim 4
Dependent Claim
30 words
A sternal retraction system according to claim 2 wherein said pivot joint means includes securing means for preventing rotational movement between said support brace means and said brace block means.
Claim 5
Dependent Claim
25 words
A sternal retraction system according to claim 1 wherein said support means includes a rail clamp adjustably fastenable to the rail of a surgical table.
Claim 6
Dependent Claim
27 words
A sternal retraction system according to claim 1 wherein said retraction means includes at least one retractor blade, said blade supported by one of said retraction arms.
Claim 7
Dependent Claim
34 words
A sternal retraction system according to claim 1 wherein said alignment bar means includes a guide bar comprising toothed channel means enabling movement of said retraction means with respect to said alignment bar means.
Claim 8
Dependent Claim
35 words
A sternal retraction system according to claim 1 wherein said adjustment means includes a pair of manually operable cranks cooperating with said alignment bar means for positioning said retraction arms along said alignment bar means.
Claim 9
Dependent Claim
29 words
A sternal retraction system according to claim 3 wherein said securing means includes a first serrated surface formed on said support brace means adjacent to said brace block means.
Claim 10
Dependent Claim
55 words
A sternal retraction system according to claim 8 wherein said securing means further includes a second serrated surface disposed on said brace block means and adjacent to said first serrated surface, said second serrated surface cooperating with said first serrated surface to prevent rotational movement between said support brace means and said brace block means.
Claim 11
Dependent Claim
27 words
A sternal retraction system according to claim 9 wherein said securing means further includes a rotatable knob for controlling contact between said first and second serrated surfaces.
Claim 12
Dependent Claim
49 words
A sternal retractor system according to claim 1 wherein said crank adjustment means includes a pair of manually rotatable cranks each of said cranks cooperating with said alignment bar means for moving a respective one of said arms along said alignment bar means as its respective crank is rotated.
Claim 13
Dependent Claim
29 words
A sternal retraction system according to claim 11 wherein said alignment bar means includes first means for cooperating with said crank adjustment means for controlling movement of said arms.
Claim 14
Dependent Claim
16 words
A sternal retraction system according to claim 12 wherein said first means includes tooth channel means.
Claim 15
Dependent Claim
26 words
A sternal retraction system according to claim 13 wherein said adjustment means includes camming means moveable by said cranks and interacting with said tooth channel means.
References Cited (Backward Citations)
US1963173A
Cited
US2053868A
Cited
US3040739A
Cited
US3168093A
Cited
US3221743A
Cited
US3522799A
Cited
US3572326A
Cited
US3724449A
Cited
US3710783A
Cited
US3965890A
Cited
US4143652A
Cited
US4510926A
Cited
US4254763A
Cited
US4355631A
Cited
US4467791A
Cited
US4424724A
Cited
US4457300A
Cited
US4461284A
Cited
US4617916A
Cited
US4797394A
Cited
US4726356A
Cited
US4702230A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-02-04 | 1994-08-06 | 1995-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-04 | 1998-08-06 | 1999-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-04 | 2002-08-06 | 2003-02-05 | $7700.00 | Window Closed / Lapsed |