Patent US4051844A successfully refreshed from Google Patents.
US4051844A
Expired / Lapsed
US
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Telescoping neurosurgical scalp retractor
Assignee: Medico Developments Inc
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Filing: 1976-05-07
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Granted: 1977-10-04
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Expires: 1996-05-07
Abstract
Abstract A neurosurgical scalp retractor for use in surgical operations within the skull, the retractor comprising an elongated frame, a first connector member at one end of the frame for attachment to the scalp, an extensible member connected to the frame, a releasable lock for fixing the extensible member in a desired position, and a second connector member disposed at a free end of the extensible member for attachment to an operating table drape.
Inventors
- 👤 Robert D. Chiulli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:30
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
108 words
A neurosurgical scalp retractor comprising an elongated frame, a first connector means at one end of said frame, said first connector means having a sharp point for penetrating said scalp, a rigid extensible member comprising a rod slidably disposed in said frame, releasable lock means for fixing said extensible member in a selected position to selectively determine the extent of said retractor, said lock means comprising leaf spring means attached to said frame and adapted to releasably exert a force upon said extensible member to prevent movement of said extensible member relative to said frame, and second connector means disposed at a free end of said extensible member.
Claim 2
Dependent Claim
108 words
A neurosurgical scalp retractor comprising an elongated frame, a first connector means at one end of said frame, said first connector means having a sharp point for penetrating said scalp, a rigid extensible member comprising a rod slidably disposed in said frame, releasable lock means for fixing said extensible member in a selected position to selectively determine the extent of said retractor, said lock means comprising leaf spring means attached to said frame and adapted to releasably exert a force upon said extensible member to prevent movement of said extensible member relative to said frame, and second connector means disposed at a free end of said extensible member.
Claim 3
Dependent Claim
101 words
A neurosurgical scalp retractor comprising an elongated frame, a first connector member disposed at one end of said frame, said first connector member having a sharp point for penetrating said scalp and being pivotally connected to said frame, a sleeve slidably disposed on said frame and movable to a position to lock said first connector member in a desired attitude, a rigid extensible member connected to said frame, releasable lock means for fixing said extensible member in a selected position to selectively determine the extent of said retractor, and second connector means disposed at a free end of said extensible member.
Claim 4
Dependent Claim
101 words
A neurosurgical scalp retractor comprising an elongated frame, a first connector member disposed at one end of said frame, said first connector member having a sharp point for penetrating said scalp and being pivotally connected to said frame, a sleeve slidably disposed on said frame and movable to a position to lock said first connector member in a desired attitude, a rigid extensible member connected to said frame, releasable lock means for fixing said extensible member in a selected position to selectively determine the extent of said retractor, and second connector means disposed at a free end of said extensible member.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-03 | 1981-04-04 | 1981-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-03 | 1985-04-04 | 1985-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-03 | 1989-04-04 | 1989-10-04 | $7700.00 | Window Closed / Lapsed |