US3602218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sterile disposable finger pin
Assignee: DW Zimmerman Manufacturing Inc
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Filing: 1969-04-16
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Granted: 1971-08-31
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Expires: 1989-04-16
Abstract
Abstract A finger pin made from Kirschner wire is mounted to a hub and sealed within a plastic container. The hub mates with the tip of a hypodermic syringe or another nonsterile handle so that the pin is easily inserted into the finger with the hub closely adjacent the surface of the skin. The hub prevents the pin from penetrating further into the finger and provides a means for easily removing the pin after the fracture has healed. The tip of the pin is specially shaped to aid the pin in penetrating the finger.
Inventors
- 👤 Daniel C Riordan
- 👤 Arthur D Steffe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:56
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/84; A61B17/846; A61B17/848; A61B90/00; A61B90/03; A61B2090/033; A61B2090/036
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
133 words
A pin for pinning finger fractures and of the type used with a surgical insertion instrument having a connection hub, comprising: a hub member having spaced opposing end faces, a straight solid wire member mounted to an extending from one of said opposing end faces, said wire member including a generally pointed converging tip portion formed by opposing sloping faces and additional opposed angles faces quadrately disposed to said sloping faces to provide penetration into a finger member, said wire member having sufficient rigidity to be inserted into a finger bone to span a fracture without buckling, and said one end face serves to permanently limit the penetration of said wire member into the finger member, and said other end face including means for detachably attaching said hub member to said connection hub.
Claim 2
Dependent Claim
133 words
A pin for pinning finger fractures and of the type used with a surgical insertion instrument having a connection hub, comprising: a hub member having spaced opposing end faces, a straight solid wire member mounted to an extending from one of said opposing end faces, said wire member including a generally pointed converging tip portion formed by opposing sloping faces and additional opposed angles faces quadrately disposed to said sloping faces to provide penetration into a finger member, said wire member having sufficient rigidity to be inserted into a finger bone to span a fracture without buckling, and said one end face serves to permanently limit the penetration of said wire member into the finger member, and said other end face including means for detachably attaching said hub member to said connection hub.
Claim 3
Dependent Claim
93 words
A pin as in claim 1 wherein said sloping faces serve to provide an entrance path into the finger member and said additional opposing angled faces serve to clear finger and bone tissue away from said wire member, said additional opposing angled faces form an included angle of substantially 60* at the tip of said wire member and each face thereof joins with said wire member at an angle of 12*-15* with respect to an imaginary plane normal to the longitudinal axis of said wire member and passing through said opposing sloping faces.
Claim 4
Dependent Claim
28 words
A pin as in claim 2 wherein said opposing sloping faces each form an angle of substantially 6* with respect to the outer surface of said wire member.
Claim 5
Dependent Claim
28 words
A pin as in claim 3 wherein said opposing sloping faces are separated by 0.015 inches to 0.020 inches at the outermost terminal point of said wire member.
Claim 6
Dependent Claim
28 words
A pin as in claim 1 wherein said wire member is a Kirschner-type wire having a circular cross section and a diameter between 0.035 inches and 0.0625 inches.
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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) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |