US4903691A
Expired / Lapsed
US
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Set of surgical instruments for joining bone fragments
Assignee: Individual
•
Filing: 1987-01-21
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Granted: 1990-02-27
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Expires: 2007-01-21
Abstract
Abstract This invention concerns a set of surgical instruments for joining bone fragments (osteosynthesis) by screw fastening, especially in the case of cranial, facial, vertebral or hand fractures, comprising several plates of different shapes and curvatures and with holes and/or several screws and/or a screwdriver 8 and/or a bending instrument and/or a depth gauge and/or a drill and/or a cutting instrument. Special designs of said plates, screws and also said screwdriver 8 are given, whereby the latter comprises a blade 10, coaxially and movably a collet 11 with, at the lower end, radial, spring-supported jaws 15 and on said collet 11 an axially slidable retaining sleeve 12, which in its lowermost position presses said jaws 15 inwards.
Inventors
- 👤 Thomas Heinl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:04
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/80; A61B17/8085; A61B17/88; A61B2017/00681; A61B2017/0069
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
122 words
An assembly for joining bone fragments by osteosynthesis for cranial, facial, vertebral nor hand fractures, comprising: a plurality of plates of various shapes and curvatures, each plate of said plurality of plates having one or more holes therein; a plurality of screws for joining two or more bone fragments to one another with plates of said plurality of plates with each screw of said plurality of screws having a head with an equator which is formed as a cylindrical sleeve, said plurality of screws to communicate with the holes of said plurality of plates; and screwdriver means, having a blade and a handle, for joining bone fragments to one another with said plurality of plates by means of said plurality of screws.
Claim 2
Dependent Claim
122 words
An assembly for joining bone fragments by osteosynthesis for cranial, facial, vertebral nor hand fractures, comprising: a plurality of plates of various shapes and curvatures, each plate of said plurality of plates having one or more holes therein; a plurality of screws for joining two or more bone fragments to one another with plates of said plurality of plates with each screw of said plurality of screws having a head with an equator which is formed as a cylindrical sleeve, said plurality of screws to communicate with the holes of said plurality of plates; and screwdriver means, having a blade and a handle, for joining bone fragments to one another with said plurality of plates by means of said plurality of screws.
Claim 3
Dependent Claim
18 words
The assembly according to claim 1, wherein at least one plate of said plurality of plates is L-shape.
Claim 4
Dependent Claim
18 words
The assembly according to claim 1, wherein at least one plate of said plurality of plates is T-shape.
Claim 5
Dependent Claim
18 words
The assembly according to claim 1, wherein at least one plate of said plurality of plates is double-T-shape.
Claim 6
Dependent Claim
18 words
The assembly according to claim 1, wherein at least one plate of said plurality of plates is Y-shape.
Claim 7
Dependent Claim
18 words
The assembly according to claim 1, wherein at least one plate of said plurality of plates is double-Y-shape.
Claim 8
Dependent Claim
18 words
The assembly according to claim 1, wherein at least one plate of said plurality of plates is S-shape.
Claim 9
Dependent Claim
18 words
The assembly according to claim 1, wherein at least one plate of said plurality of plates is H-shape.
Claim 10
Dependent Claim
20 words
The assembly according to claim 1, wherein at least one plate of said plurality of plates is an arcuate shape.
Claim 11
Dependent Claim
39 words
The assembly according to claim 1, wherein at least one plate of said plurality of plates includes a combination of two or more of the shapes of L-shape, T-shape, double-T shape, Y-shape, double-Y-shape, S-shape, H-shape and an arcuate shape.
Claim 12
Dependent Claim
24 words
The assembly according to claim 1, wherein at least one plate of said plurality of plates includes at least one end which is singly-branched.
Claim 13
Dependent Claim
24 words
The assembly according to claim 1, wherein at least one plate of said plurality of plates includes at least one end which is multiply-branched.
Claim 14
Dependent Claim
49 words
The assembly according to claim 1, wherein at least one plate of said plurality of plates includes a screw ring which surrounds a screw of said plurality of screws, said screw ring having a greater strength or rigidity than other portions of said plates of said plurality of plates.
Claim 15
Dependent Claim
31 words
The assembly according to claim 1, wherein at least one plate of said plurality of plates is contoured, with an exterior contour and an interior contour, said exterior contour being toothed.
Claim 16
Dependent Claim
22 words
The assembly according to claim 1, wherein at least one plate of said plurality of plates has an edge which is rounded.
Claim 17
Dependent Claim
19 words
The assembly according to claim 1, wherein at least one plate of said plurality of plates has graduation markings.
Claim 18
Dependent Claim
40 words
The assembly according to claim 1, wherein at least one screw of said plurality of screws is a slot-head screw having an axial hole, the depth of which hole being greater than or equal to the depth of the slot.
Claim 19
Dependent Claim
31 words
The assembly to claim 1, wherein at least one screw of said plurality of screws is a slot-head screw having a diameter which is greater than the width of the slot.
Claim 20
Dependent Claim
17 words
The assembly according to claim 1, wherein said plurality of plates is made of a tissue-compatible material.
Claim 21
Dependent Claim
54 words
The assembly according to claim 19, wherein said plurality of plates is made of a member selected from the group consisting of titanium, niobium, tantalum, gold, V2A-grade of steel, V4A-grade of steel, an alloy of V2A-grade of steel, an alloy of V4A-grade of steel, a ceramic material, sapphire, carbon fibers and a combination thereof.
Claim 22
Dependent Claim
17 words
The assembly according to claim 19, wherein said plurality of plates is made of a resorbable material.
Claim 23
Dependent Claim
12 words
The assembly according to claim 21, wherein said resorbable material is polydioxanone.
Claim 24
Dependent Claim
26 words
The assembly according to claim 1, further comprising a pin pointing in an axial direction, said pin being centrally-formed on said blade of said screwdriver means.
Claim 25
Dependent Claim
63 words
The assembly according to claim 1, further comprising a collet, having at a lower end, radially-movable, spring-supported jaws, said collet being disposed coaxially and slidably against the force of a spring or magnet on said blade of said screwdriver means, and an axially slidable retaining sleeve, being disposed and spring-supported on said collet, which, in a lower-most position, presses said clamping jaws inwardly.
Claim 26
Dependent Claim
34 words
The assembly according to claim 24, wherein said collet is maximally-slidable over said blade so that said clamping jaws are capable of gripping a screw head, said retaining sleeve being unslidable beyond said collet.
Claim 27
Dependent Claim
30 words
The assembly according to claim 24, wherein a handle of said screwdriver means is formed as having two parts, the two parts being movable with respect to one another radially.
Claim 28
Dependent Claim
30 words
The assembly according to claim 24, wherein a handle of said screwdriver means is formed as having two parts, the two parts being movable with respect to one another axially.
Claim 29
Dependent Claim
14 words
The assembly according to claim 27, wherein the two parts interlock under axial pressure.
Claim 30
Dependent Claim
20 words
The assembly according to claim 24, wherein a right/left ratchet mechanism is accommodated in a handle of said screwdriver means.
Claim 31
Dependent Claim
20 words
The assembly according to claim 24, wherein an adjustable torque limiter is accommodated in a handle of said screwdriver means.
Claim 32
Dependent Claim
23 words
The assembly according to claim 1, wherein the head of at least one screw of said plurality of screws includes a self-tapping bit.
Claim 33
Dependent Claim
18 words
The assembly according to claim 1, wherein the blade of said screwdriver means is recessed at its end.
Claim 34
Dependent Claim
18 words
The assembly according to claim 1, wherein the blade of said screwdriver means is extended at its end.
Claim 35
Dependent Claim
23 words
The assembly according to claim 1, wherein said plurality of screws have a central slot which is recessed at, at least, one end.
Claim 36
Dependent Claim
23 words
The assembly according to claim 1, wherein said plurality of screws have a central slot which is extended at, at least, one end.
Claim 37
Dependent Claim
23 words
The assembly according to claim 1, wherein said plurality of screws having different screw pitches which are applied to a single screw shank.
Claim 38
Dependent Claim
26 words
The assembly according to claim 14, wherein the teeth of said exterior contour are positioned in a plane which is defined by said plurality of plates.
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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) | 1993-02-26 | 1993-08-28 | 1994-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-26 | 1997-08-28 | 1998-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-26 | 2001-08-28 | 2002-02-27 | $7700.00 | Window Closed / Lapsed |