US4793335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bone implant for fixing artificial tendons or ligaments with application and extraction means
Assignee: Sulzer AG
•
Filing: 1987-01-20
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Granted: 1988-12-27
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Expires: 2007-01-20
Abstract
Abstract The agraffe is composed of a deformable metal plate having two projections, each of which is provided with a threaded eyelet. In addition, anchored pins are threaded into the respective eyelets and can be selected from a set of pins having different lengths. The deformable plate is arched between the projections and has a plurality of tacks fixably secured in place to increase adhesion of a ligament or tendon to a bone. The instrument for implanting or extracting the agraffe includes a pair of angular sector-shaped grooves of T-shaped cross-sections which are sized to engage with and under the heads of the pins in order to form a connection between the instrument and agraffe.
Inventors
- 👤 Otto Frey
- 👤 Rudolf Koch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:35
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/064; A61B17/0642; A61B2017/0641; A61B2017/0647; Y; Y10; Y10S; Y10S606/00; Y10S606/916
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
88 words
A bone implant for fixing artificial ligaments and tendons to a bone, said implant comprising; a permanently deformable metal plate defining a connecting bridge element and a pair of projections extending from opposite sides of said bridge element; a pair of spike-like anchor pins, each said pin extending from a respective projection; and means between each said projection and each said pin for detachably securing each said pin to a respective projection for selective removal therefrom to adapt to a bone thickness for fixation of an artificial ligament.
Claim 2
Dependent Claim
88 words
A bone implant for fixing artificial ligaments and tendons to a bone, said implant comprising; a permanently deformable metal plate defining a connecting bridge element and a pair of projections extending from opposite sides of said bridge element; a pair of spike-like anchor pins, each said pin extending from a respective projection; and means between each said projection and each said pin for detachably securing each said pin to a respective projection for selective removal therefrom to adapt to a bone thickness for fixation of an artificial ligament.
Claim 3
Dependent Claim
27 words
A bone implant as set forth in claim 1 wherein said means includes a threaded eyelet in a respective projection and a thread on a respective pin.
Claim 4
Dependent Claim
23 words
A bone implant as set forth in claim 1 further comprising a plurality of tacks secured to and extending from said bridge element.
Claim 5
Dependent Claim
88 words
In combination, at least one bone implant having a permanently deformable metal plate and a pair of spike-like anchor pins secured to and extending from said plate, each pin having a head projecting from said plate in knob-like manner; and a driving and extracting instrument having a shank with an enlarged end and a pair of annular sector-shaped grooves of T-shaped cross-section in said end, each said groove being sized to slidably receive a head of a respective pin therein to connect said instrument to said bone implant.
Claim 6
Dependent Claim
88 words
In combination, at least one bone implant having a permanently deformable metal plate and a pair of spike-like anchor pins secured to and extending from said plate, each pin having a head projecting from said plate in knob-like manner; and a driving and extracting instrument having a shank with an enlarged end and a pair of annular sector-shaped grooves of T-shaped cross-section in said end, each said groove being sized to slidably receive a head of a respective pin therein to connect said instrument to said bone implant.
Claim 7
Dependent Claim
35 words
The combination as set forth in claim 4 wherein each groove of said instrument has a circumferentially inclined base for wedging against a head of respective pin to fixedly connect said instrument to said agraffe.
Claim 8
Dependent Claim
17 words
The combination a set forth in claim 5 wherein each pin is threadably mounted in said plate.
Claim 9
Dependent Claim
38 words
The combination as set forth in claim 6 which further comprises at least one tack secured to and extending from said plate between said pins and of a length of at least one-third the length of said pins.
Claim 10
Dependent Claim
24 words
The combination as set forth in claim 4 comprising a plurality of pins of different lengths for detachable mounting in pairs in said plate.
Claim 11
Dependent Claim
79 words
A surgical agraffe for fixing artificial ligaments and tendons to a bone, said agraffe comprising a permanently deformable metal plate defining a connecting bridge element and a pair of projections extending from opposite sides of said bridge element, each projection including a threaded eyelet; and a pair of spike-like anchor pins, each said pin being threaded into and extending from an eyelet of a respective projection and including a head projecting from said respective projection in a knob-like manner.
Claim 12
Dependent Claim
79 words
A surgical agraffe for fixing artificial ligaments and tendons to a bone, said agraffe comprising a permanently deformable metal plate defining a connecting bridge element and a pair of projections extending from opposite sides of said bridge element, each projection including a threaded eyelet; and a pair of spike-like anchor pins, each said pin being threaded into and extending from an eyelet of a respective projection and including a head projecting from said respective projection in a knob-like manner.
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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) | 1991-12-27 | 1992-06-27 | 1992-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-27 | 1996-06-27 | 1996-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-27 | 2000-06-27 | 2000-12-27 | $7700.00 | Window Closed / Lapsed |