EP1248573B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Device for securing spinal rods
Assignee: Howmedica Osteonics Corp
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Filing: 2000-03-29
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Granted: 2006-08-30
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Expires: 2020-03-29
Abstract
No abstract record available.
Inventors
- 👤 Hansen Yuan
- 👤 David Nichols
- 👤 Eric Finley
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 01:36
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/70; A61B17/7001; A61B17/7035; A61B17/7037; A61B17/7032; A61B2017/00831; A61B2017/00858
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
204 words
A device (214, 216) for securing a spinal rod (212) to the spine comprising: - a head portion (222) having a channel (228) adapted to receive a spinal rod (212), - fastener portion (226, 246) depending from the head portion (222). - a locking cap (220) configured for reception by the head portion (222) and adapted to engage an exterior surface of the spinal rod (212) to secure the position of the head portion (222) relative to the spinal rod (212), characterized in that the locking cap (220) is rotatably configured for reception by the head portion (222) and adapted to engage an interior surface (294, 296) of the channel (228) and the exterior surface of the spinal rod (212) upon rotation of the locking cap (220) from an unlocked position to a locked position to secure said position of the head portion (222), the locking cap (220) having a first portion (220a) adapted to engage an interior surface (294, 296) of the head portion (222) and a second portion (220b) adapted to engage said exterior surface of the spinal rod (212), the first portion (220a) of the locking cap (220) being rotatable relative to the second portion (220b) of the locking cap (220).
Claim 2
Dependent Claim
32 words
The device according to claim 1, wherein the second portion (220b) of the locking cap (220) has an elongated recess (299) configured to engage the exterior surface of the spinal rod (212).
Claim 3
Dependent Claim
43 words
The device according to claim 1 or 2, wherein the position of the head portion (222) relative to the spinal rod (212) is secured upon rotation of the first portion of the locking cap relative to the second portion of the locking cap.
Claim 4
Independent Claim
38 words
The device according to one of claims 1 to 3, wherein the head portion has a central axis (y) and the first portion of the locking cap is rotatable about the central axis of the head portion (222).
Claim 5
Independent Claim
76 words
The device according to one of claims 1 to 4, wherein the locking cap (220) is rotatable about a central axis (y) between an unlocked position and a locked position, wherein the fastener portion (226) is movable relative to the head portion (220) when the locking cap (220) is in the unlocked position and the fastener portion 8226) is fixed relative to the head portion (222) when the locking cap (220) is in the locked position.
Claim 6
Independent Claim
46 words
The device according to one of claims 1 to 5, wherein the first portion and the second portion of the locking cap are coupled together by an axial post (298) that facilitates relative rotational movement of the first portion (220a) relative to the second portion (220b).
Claim 7
Independent Claim
68 words
The device according to one of claims 1 to 6, wherein the locking cap has opposed engagement flanges configured to cooperate with an interior surface of the channel and an exterior surface of the spinal rod upon rotation of the locking cap relative to the head portion between an unlocked position and a locked position to secure the position of the head portion relative to the spinal rod.
Claim 8
Independent Claim
21 words
The device according to one of claims 1 to 6, wherein channel (228) is bounded by opposed side walls (230, 232).
Claim 9
Dependent Claim
23 words
The device according to claim 8, wherein each of the opposed side walls (230, 232) has an engagement slot (294, 296) defined therein.
Claim 10
Dependent Claim
48 words
The device according to claim 9, wherein the locking cap (220) has opposed engagement flanges (284, 286) that are configured for reception in the opposed arcuate engagement slots (294, 296) of the head portion (222) upon rotation of the locking cap (220) relative to the head portion (222).
Claim 11
Dependent Claim
13 words
The device according to claim 10, wherein the opposed engagement flanges are discontinuous.
Claim 12
Dependent Claim
13 words
The device according to claim 10, wherein the opposed engagement flanges are arcuate.
Claim 13
Dependent Claim
63 words
The device according to claim 10, wherein the locking cap is configured for rotation between an initial position in which the engagement flanges are not in contact with the engagement slots, an intermediate position in which the engagement flanges are partially in contact with the engagement slots and a locked position in which the engagement flanges are fully engaged with the engagement slots.
Claim 14
Dependent Claim
75 words
The device according to claim 10, wherein the opposed engagement slots are each defined in part by inclined slot surfaces, with the angle of the inclined slot surface of one engagement slot being opposite that of the opposed engagement slot, and wherein the opposed engagement flanges are each defined in part by inclined flange surfaces, with the angle of the inclined flange surface of one engagement flange being opposite that of the opposed engagement flange.
Claim 15
Independent Claim
18 words
The device according to one of claims 1 to 14, wherein the fastener portion comprises a screw (226).
Claim 16
Independent Claim
18 words
The device according to one of claims 1 to 14, wherein the fastener portion comprises a hook (246).
Claim 17
Independent Claim
33 words
The device according to one of claims 1 to 16, wherein the channel (228) defines a vertical axis and a horizontal axis, and the spinal rod (212) is received along the horizontal axis.
References Cited (Backward Citations)
No citation records indexed.
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