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• 15 United States
• 10 France
• 8 Japan
• 7 China
• 5 Korea
• 2 Other

Patent Owner(s)

Patent Owner	Address
SEASPINE ORTHOPEDICS CORPORATION	5770 ARMADA DRIVE CARLSBAD CA 92008

International Classification(s)

• A61B:DIAGNOSIS; SURGERY; IDENTIFICATION

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Gundanna, Mukund	College Station, US	5	320
# of filed Patents : 5 Total Citations : 320
Lab, Eric A	Wadsworth, US	15	580
# of filed Patents : 15 Total Citations : 580

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Patent Citation Ranking

• 86 Citation Count
• A61B Class

• 88.37 % this patent is cited more than
• 12 Age

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge after expiration - Late payment is unavoidable	$700.00	$350.00	$175.00
Surcharge after expiration - Late payment is unintentional	$1,640.00	$820.00	$410.00

Full Text

US Patent No: 8388659

Spondylolisthesis screw and instrument for implantation

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Abstract

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A screw for use in spinal surgery provided with a screw shaft and a screw head and at least one extension tab extending proximally from the screw head, the extension tab being defined relative to the screw head by a stress concentration feature. At a proximal end of the extension tab, the extension tab may be narrower in a circumferential direction than the extension tab at a distal portion thereof. A particular shape of stress concentration may be provided.

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Description

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Claims

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