Patent US3740779A successfully refreshed from Google Patents.
US3740779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical device
Assignee: Device Developments Inc
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Filing: 1971-11-26
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Granted: 1973-06-26
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Expires: 1991-11-26
Abstract
Abstract A surgical tool which comprises a surgical scalpel containing on one end thereof a scalpel blade. On the shaft thereof a series of metered markings for the purpose of longitudinal measurement and on the other end of the shaft a device for measuring the circumferential diameter of an orifice or mouth of a tube or duct.
Inventors
- 👤 J Rubricuis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:07
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3209; A61B17/3211; A61B17/3213; A61B5/00; A61B5/103; A61B5/107; A61B5/1076; A61B90/00; A61B90/06; A61B2090/061; A61B2090/067
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
55 words
A surgical tool which comprises a rigid shaft having affixed to one end a cutting blade, said shaft having unit measurement marks extending over the middle segment thereof and tapered and metered tip on the end opposite the cutting blade, said tapered tip adapted to measure the internal diameter of tubular stuctures in the body.
Claim 2
Dependent Claim
55 words
A surgical tool which comprises a rigid shaft having affixed to one end a cutting blade, said shaft having unit measurement marks extending over the middle segment thereof and tapered and metered tip on the end opposite the cutting blade, said tapered tip adapted to measure the internal diameter of tubular stuctures in the body.
Claim 3
Dependent Claim
17 words
A surgical tool as described in claim 1, wherein the shaft unit is constructed of a thermoplastic.
Claim 4
Dependent Claim
23 words
A surgical tool as described in claim 1 wherein the thermoplastic is color coded to the size and shape of the cutting blade.
Claim 5
Dependent Claim
13 words
A surgical tool as described in claim 2 wherein the thermoplastic is polypropylene.
Claim 6
Dependent Claim
19 words
A surgical tool as described in claim 3, wherein the unit measurement marks are printed in a contrasting color.
Claim 7
Dependent Claim
32 words
A surgical tool as described in claim 1, having an articulated side arm which serves as a caliper, said caliper having a pointer element which points to a scale having measurement marks.
Claim 8
Dependent Claim
13 words
A surgical tool as described in claim 6, wherein the plastic is polypropylene.
Claim 9
Dependent Claim
23 words
A surgical tool as described in claim 6 wherein the plastic is color coded to the size and shape of the cutting blade.
Claim 10
Dependent Claim
24 words
A surgical tool as described in claim 8, wherein the unit markings are printed in a color contrasting with the color of the shaft.
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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) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |