US3905101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable surgical scalpel
Assignee: Becton Dickinson and Co
•
Filing: 1974-04-19
•
Granted: 1975-09-16
•
Expires: 1994-04-19
Abstract
Abstract A disposable surgical scalpel assembly is disclosed which comprises a frangible handle, a cutting blade and a sheath in a single unitary assembly. The sheath is attached to the handle and movable to blade guarding and blade unguarded positions. When the sheath is in a blade unguarded position, with the blade exposed, the sheath serves as a gripping surface for the handle. The sheath component of the assembly may be releasably locked in either position for safe handling.
Inventors
- 👤 John W Shepherd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:55
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3209; A61B17/3211; A61B17/3213; A61B17/3215; A61B17/3217; A61B2017/32113
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
51 words
A unitary, disposable surgical scalpel which comprises, a frangible handle; a cutting blade attached to said handle; a sheath movably attached to said handle; means for releasably locking said sheath in a first position sheathing said blade; and means for releasably locking said sheath in a second position exposing the blade.
Claim 2
Dependent Claim
51 words
A unitary, disposable surgical scalpel which comprises, a frangible handle; a cutting blade attached to said handle; a sheath movably attached to said handle; means for releasably locking said sheath in a first position sheathing said blade; and means for releasably locking said sheath in a second position exposing the blade.
Claim 3
Dependent Claim
20 words
A scalpel of claim 1 wherein said sheath forms a gripping surface for said handle when said blade is unsheathed.
Claim 4
Dependent Claim
114 words
A disposable surgical scalpel with sheath assembly which comprises: a frangible handle; a cutting blade affixed to one end of said handle; a sheath movably attached to said handle and which when moved to a first position is releasably locked by a depressible lug attached to said handle which engages a lug receiving slot in said sheath, in a blade sheathing position; and which when moved to a second position is releasably locked by a depressible lug attached to said handle which engages a lug receiving slot in said sheath, in a blade exposing position; said sheath forming a gripping surface for holding the scalpel, when the sheath is in a blade exposing position.
Claim 5
Dependent Claim
114 words
A disposable surgical scalpel with sheath assembly which comprises: a frangible handle; a cutting blade affixed to one end of said handle; a sheath movably attached to said handle and which when moved to a first position is releasably locked by a depressible lug attached to said handle which engages a lug receiving slot in said sheath, in a blade sheathing position; and which when moved to a second position is releasably locked by a depressible lug attached to said handle which engages a lug receiving slot in said sheath, in a blade exposing position; said sheath forming a gripping surface for holding the scalpel, when the sheath is in a blade exposing position.
References Cited (Backward Citations)
US2735176A
Cited
US1853672A
Cited
US1888488A
Cited
US2051199A
Cited
US2270655A
Cited
US2611178A
Cited
US2749924A
Cited
US3025598A
Cited
US3448518A
Cited
US3708881A
Cited
US3765089A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |