Granted Patent
B2
US 12,471,963 · App. 17/564,615 · Granted Nov 18, 2025
Apparatus and method for limiting a range of angular positions of a screw
Inventors:
Eric A. Lab (Wadsworth, OH); Joel P. Bales (Garrettsville, OH); Simon Gerhard Sjovold (North Canton, OH); Keun-Young Anthony Kim (Irvine, CA)
Assignee:
SeaSpine Orthopedics Corporation
View Patent ↗
Loading inventors, assignments & file history…
Abstract
A spinal screw assembly is provided. The assembly may be provided with a screw and a movable head in which angulation of the screw relative to the movable head is constrained so that angulation within limits is allowed in one plane but lesser or no angulation is allowed in another plane. Methods to assemble the disclosed apparatus are also disclosed.
Claims (13)
1 . A spinal screw apparatus, comprising:
a screw comprising a shaft and a screw head fixedly attached with said shaft, wherein said screw head further comprises a portion of a sphere;
a movable head having a concave interior larger than said screw head, and movable with respect to said screw head; and
a collet further comprising a longitudinal axis, and being interposed between said screw head and said concave interior of said movable head, wherein said collet bears frictionally against said screw head and said movable head;
wherein said collet comprises a first end and a second end, said second end being opposed to said first end and distal of said first end, said first end generally in the shape of a ring, said first end defining a first end plane, said ring defining a circle located in said first end plane;
wherein said collet has first slots penetrating through said first end and second slots penetrating through said second end; and
wherein each of said first slots define a gap at said first end of said collet, said gaps when viewed from above the collet each define a secant line for said circle in said first end plane that does not intersect a center point of said circle in said first end plane.
2 . The apparatus of claim 1 wherein a number of said first slots is an odd number.
3 . The apparatus of claim 1 wherein a number of said first slots is different from a number of said second slots.
4 . The apparatus of claim 1 , wherein a number of said first slots is greater than a number of said second slots.
5 . The apparatus of claim 1 , wherein a number of said second slots is greater than a number of said first slots.
6 . The apparatus of claim 1 , wherein a number of said second slots is at least double a number of said first slots.
7 . The apparatus of claim 1 , wherein said first end of said collect includes a lip having a thickness in a radial direction, and each gap defined by said first slots extend through said lip.
Assignments (10)
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Dec 20, 2024
From: THEKEN SPINE, LLC
To: SEASPINE ORTHOPEDICS CORPORATION
Reel/Frame 069746/0620 →
RELEASE OF SECURITY INTEREST
Recorded Nov 12, 2024
From: BLUE TORCH FINANCE LLC
To: ISOTIS ORTHOBIOLOGICS, INC.; ORTHOFIX US, LLC; SEASPINE, INC.; SEASPINE ORTHOPEDICS CORPORATION; SPINAL KINETICS LLC; THEKEN SPINE, LLC
Reel/Frame 069358/0110 →
SECURITY INTEREST
Recorded Nov 8, 2024
From: ORTHOFIX MEDICAL INC.; ORTHOFIX US LLC; SPINAL KINETICS LLC; SEASPINE ORTHOPEDICS CORPORATION; SEASPINE, INC.; ISOTIS ORTHOBIOLOGICS, INC.; THEKEN SPINE, LLC
To: OXFORD FINANCE LLC, AS AGENT
Reel/Frame 069332/0761 →
RELEASE OF SECURITY INTEREST
Recorded Nov 7, 2024
From: JPMORGAN CHASE BANK, N.A.
To: SEASPINE ORTHOPEDICS CORPORATION; SEASPINE, INC.; ISOTIS ORTHOBIOLOGICS, INC.; THEKEN SPINE, LLC
Reel/Frame 069323/0561 →
SECURITY INTEREST
Recorded Jan 10, 2024
From: THEKEN SPINE, LLC
To: BLUE TORCH FINANCE LLC, AS COLLATERAL AGENT
Reel/Frame 066257/0388 →
SECURITY INTEREST
Recorded Feb 21, 2023
From: SEASPINE ORTHOPEDICS CORPORATION; SEASPINE, INC.; ISOTIS ORTHOBIOLOGICS, INC.; THEKEN SPINE, LLC
To: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE ASSISTANT
Reel/Frame 062819/0650 →
RELEASE OF SECURITY INTEREST
Recorded Jan 9, 2023
From: WELLS FARGO BANK, NATIONAL ASSOCIATION
To: SEASPINE HOLDINGS CORPORATION; SEASPINE ORTHOPEDICS CORPORATION; SEASPINE, INC.; ISOTIS, INC.; SEASPINE SALES LLC; ISOTIS ORTHOBIOLOGICS, INC.; THEKEN SPINE, LLC; SEASPINE ORTHOPEDICS INTERMEDIATECO, INC.; 7D SURGICAL USA INC.
Reel/Frame 062336/0593 →
SECOND AMENDMENT TO PATENT SECURITY AGREEMENT
Recorded Jul 18, 2022
From: SEASPINE HOLDINGS CORPORATION; SEASPINE ORTHOPEDICS CORPORATION; SEASPINE, INC.; ISOTIS, INC.; SEASPINE SALES LLC; ISOTIS ORTHOBIOLOGICS, INC.; THEKEN SPINE, LLC; SEASPINE ORTHOPEDICS INTERMEDIATECO, INC.; 7D SURGICAL USA INC.
To: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS AGENT
Reel/Frame 060715/0395 →
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Feb 9, 2022
From: LAB, ERIC A.; BALES, JOEL P.; SJOVOLD, SIMON GERHARD; KIM, KEUN-YOUNG ANTHONY
To: THEKEN SPINE, LLC
Reel/Frame 058938/0340 →
ASSIGNEE CHANGE OF ADDRESS
Recorded Feb 9, 2022
From: THEKEN SPINE, LLC
To: THEKEN SPINE, LLC
Reel/Frame 058980/0581 →
Continuity (6)
Division
15449460
· Mar 3, 2017
Division
14797702
· Jul 13, 2015
Continuation
13180332
· Jul 11, 2011
Provisional Application
61362993
· Jul 9, 2010
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