US6048343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bone screw system
Assignee: Stryker Corp
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Filing: 1999-06-02
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Granted: 2000-04-11
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Expires: 2019-06-02
Abstract
Abstract A bone screw system (100) is provided that includes a cannulated bone screw (110) and an adapter (140) designed to be releasably coupled to the screw (110). The screw (110) has a head (112) with an opening (126) formed therein. A shank portion (114) of screw (110) extends from the head (112) and has a closed end bore (124) formed therein in open communication with the opening (126). The screw (110) has a threaded portion (116) in which a plurality of apertures (122) are formed in a root portion (120) of the thread. The adapter (140) has a distal end (150) adapted for releasable coupling with the head (112) and has a passage (162) extending longitudinally therethrough for open communication with the bore (124) of the screw (110). The adapter (140) further includes a grip portion (154) formed by a plurality of spaced annular ridges (156). The proximal end of adapter (140) has a fitting (142) formed thereon for coupling to a device for dispensing a purchase enhancing composition, through the adapter (140) and bore (124) to the apertures (122).
Inventors
- 👤 John M. Mathis
- 👤 Stephen M. Belkoff
- 👤 Charles J. Phillips
- 👤 Marshall D. Welch, III
- 👤 Steven M. Kmiec
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:23
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/70; A61B17/7097; A61B17/7098; A61B17/84; A61B17/86; A61B17/864; A61B17/88; A61B17/8802; A61B17/8805; A61B17/8816
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
122 words
A bone screw system, comprising: a bone screw having a head adapted to be driven by a tool and a shank portion extending longitudinally from said head, said shank portion having threads formed on at least a portion thereof and a bore extending longitudinally to a closed distal end, said threaded portion having a plurality of apertures formed therein in open communication with said bore, said head having an opening formed therein and in open communication with said bore; and, an adapter releasably lockingly coupled to said head of said screw and sealingly engaged with said bore for injection of a composition therein to pass through said plurality of apertures and thereby aid in fixation of said threads in a patient's bone.
Claim 2
Dependent Claim
122 words
A bone screw system, comprising: a bone screw having a head adapted to be driven by a tool and a shank portion extending longitudinally from said head, said shank portion having threads formed on at least a portion thereof and a bore extending longitudinally to a closed distal end, said threaded portion having a plurality of apertures formed therein in open communication with said bore, said head having an opening formed therein and in open communication with said bore; and, an adapter releasably lockingly coupled to said head of said screw and sealingly engaged with said bore for injection of a composition therein to pass through said plurality of apertures and thereby aid in fixation of said threads in a patient's bone.
Claim 3
Dependent Claim
30 words
The bone screw system as recited in claim 1 where said plurality of apertures are respectively formed in a root portion of said threads and spaced at increments of 120°.
Claim 4
Dependent Claim
26 words
The bone screw system as recited in claim 1 where said adapter includes a pair of opposing locking lugs extending therefrom adjacent a distal end thereof.
Claim 5
Dependent Claim
43 words
The bone screw system as recited in claim 3 where said opening in said head has a pair of recesses formed in opposing interior wall surfaces thereof and extending from a proximal end of said head for respectively receiving said locking lugs therein.
Claim 6
Dependent Claim
56 words
The bone screw system as recited in claim 4 where each of said pair of recesses has a longitudinally directed section for guiding displacement of said locking lugs responsive to insert of said adapter distal end into said opening in said head, and an angularly directed section to provide releasable locking engagement with said locking lugs.
Claim 7
Dependent Claim
27 words
The bone screw system as recited in claim 1 where said opening in said head has a substantially conically shaped interior surface portion adjacent to said bore.
Claim 8
Dependent Claim
40 words
The bone screw system as recited in claim 6 where said adapter has a substantially conically shaped external distal end surface corresponding to said conically shaped internal surface portion of said opening in said head to provide sealing engagement therebetween.
Claim 9
Dependent Claim
30 words
The bone screw system as recited in claim 6 where said adapter includes a pair of opposing locking lugs extending therefrom adjacent said conically shaped external distal end surface thereof.
Claim 10
Dependent Claim
50 words
The bone screw system as recited in claim 8 where said opening in said head has a pair of recesses extending from a proximal end of said opening and formed in opposing interior wall surfaces thereof adjacent said conically shaped internal surface portion for respectively receiving said locking lugs therein.
Claim 11
Dependent Claim
66 words
The bone screw system as recited in claim 9 where each of said pair of recesses has a longitudinally directed section for guiding displacement of said locking lugs responsive to insert of said adapter distal end into said opening in said head, and an angularly directed section to provide releasable locking engagement with said locking lugs and provide said sealing engagement between said conically shaped surfaces.
Claim 12
Dependent Claim
21 words
The bone screw system as recited in claim 10 where said adapter includes a luer-type coupling on a proximal end thereof.
Claim 13
Dependent Claim
24 words
The bone screw system as recited in claim 11 where said adapter includes a grip section disposed intermediate said proximal and distal ends thereof.
Claim 14
Dependent Claim
21 words
The bone screw system as recited in claim 12 where said grip section is formed with a plurality of annular ridges.
Claim 15
Dependent Claim
24 words
The bone screw system as recited in claim 12 where said plurality of annular ridges collectively form a longitudinally directed arcuate outer surface contour.
Claim 16
Dependent Claim
21 words
The bone screw system as recited in claim 1 where said adapter includes a grip section disposed intermediate opposing ends thereof.
Claim 17
Dependent Claim
21 words
The bone screw system as recited in claim 15 where said grip section is formed with a plurality of annular ridges.
Claim 18
Dependent Claim
24 words
The bone screw system as recited in claim 16 where said plurality of annular ridges collectively form a longitudinally directed arcuate outer surface contour.
Claim 19
Dependent Claim
125 words
A bone screw system, comprising: an adapter having a passage formed longitudinally therethrough; a bone screw having a head adapted to be driven by a tool and a shank portion extending longitudinally from said head, said shank portion having threads formed on at least a portion thereof and a bore extending longitudinally to a closed distal end, said threaded portion having a plurality of apertures formed therein in open communication with said bore, said head having an opening formed therein and in open communication with said bore for receiving a distal end of said adapter therein, said adapter passage being disposed in aligned relationship with said bore; and, means for releasably lockingly coupling said distal end of said adapter to said head of said screw.
Claim 20
Dependent Claim
125 words
A bone screw system, comprising: an adapter having a passage formed longitudinally therethrough; a bone screw having a head adapted to be driven by a tool and a shank portion extending longitudinally from said head, said shank portion having threads formed on at least a portion thereof and a bore extending longitudinally to a closed distal end, said threaded portion having a plurality of apertures formed therein in open communication with said bore, said head having an opening formed therein and in open communication with said bore for receiving a distal end of said adapter therein, said adapter passage being disposed in aligned relationship with said bore; and, means for releasably lockingly coupling said distal end of said adapter to said head of said screw.
Claim 21
Dependent Claim
58 words
The bone screw system as recited in claim 18 where said releasable locking means includes a pair of opposing locking lugs extending from an external surface of said adapter adjacent said distal end thereof, and a pair of recesses formed in opposing interior wall surfaces of said opening in said head for respectively receiving said locking lugs therein.
Claim 22
Dependent Claim
21 words
The bone screw system as recited in claim 18 where said adapter includes a grip section disposed intermediate opposing ends thereof.
Claim 23
Dependent Claim
21 words
The bone screw system as recited in claim 18 where said adapter includes a luer-type coupling on a proximal end thereof.
Claim 24
Dependent Claim
58 words
The bone screw system as recited in claim 1 where said opening in said head has a substantially conically shaped interior surface portion adjacent to said bore and said adapter has a substantially conically shaped external distal end surface corresponding to said conically shaped internal surface portion of said opening in said head to provide sealing engagement therebetween.
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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) | 2003-04-11 | 2003-10-11 | 2004-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-04-11 | 2007-10-11 | 2008-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-04-11 | 2011-10-11 | 2012-04-11 | $7700.00 | Window Closed / Lapsed |