US 2018/0008320 A1 · CERVICAL SPINOUS PROCESS STAPLE

Abstract

Thoracic/lumbar and cervical spinous process staples which staple/fuse adjacent spinous processes are disclosed. Thoracic/lumbar transverse process staples which staple/fuse adjacent transverse processes are also disclosed. Each embodiment has upper and lower claws connected by a ratchet spring mechanism, along with a multiplicity of bone fastener prongs attached to the upper and lower claws. Two sets of prongs on each staple claw are spaced by a distance approximately equal to the distance separating adjacent spinous or transverse processes so as to facilitate stapling/fusion of two adjacent processes. Also disclosed are staple prongs with multiple perforations which enable incorporation of bone fusion material thereby facilitating stapling/fusion of spinal elements.

Claims27

Dependent claims

(canceled)

A spinous process fixation device comprising:

a first elongate clamping structure extending from a first end to a second end and having a first spinous process engagement surface between the first end and the second end with a first set of bone fastener prongs extending from the first spinous process engagement surface proximate the first end and a second set of bone fastener prongs extending from the first spinous process engagement surface proximate the second end, wherein the first set of bone fastener prongs is separated from the second set of bone fastener prongs by a first portion of the first spinous process engagement surface that does not include bone fastener prongs;
a second elongate clamping structure extending from a third end to a fourth end and having a second spinous process engagement surface between the third end and the fourth end with a third set of bone fastener prongs extending from the second spinous process engagement surface proximate the third end and a fourth set of bone fastener prongs extending from the second spinous process engagement surface proximate the fourth end, wherein the third set of bone fastener prongs is separated from the fourth set of bone fastener prongs by a second portion of the second spinous process engagement surface that does not include bone fastener prongs;
and
a ratcheting mechanism connecting the first elongate clamping structure to the second elongate clamping structure, wherein the ratcheting mechanism comprises a rod extending at least partially through a first hole defined in the first elongate clamping structure and a second hole defined in the second elongate clamping structure, wherein the spinous process fixation device is configured to ratchet and fix a first spinous process with respect to a second spinous process with the first spinous process positioned between the first and second spinous process engagement surfaces so as to be engaged by the first and third sets of bone fastener prongs and with the second spinous process positioned between the first and second spinous process engagement surfaces so as to be engaged by the second and fourth sets of bone fastener prongs.

1 more element

A spinous process fixation device comprising:

a first elongate clamping structure extending from a first end to a second end and having a first spinous process engagement surface between the first end and the second end with a first set of bone fastener prongs extending from the first spinous process engagement surface proximate the first end and a second set of bone fastener prongs extending from the first spinous process engagement surface proximate the second end, wherein the first set of bone fastener prongs is separated from the second set of bone fastener prongs by a first portion of the first spinous process engagement surface that does not include bone fastener prongs;
a second elongate clamping structure extending from a third end to a fourth end and having a second spinous process engagement surface between the third end and the fourth end with a third set of bone fastener prongs extending from the second spinous process engagement surface proximate the third end and a fourth set of bone fastener prongs extending from the second spinous process engagement surface proximate the fourth end, wherein the third set of bone fastener prongs is separated from the fourth set of bone fastener prongs by a second portion of the second spinous process engagement surface that does not include bone fastener prongs;
at least one spacer configured to occupy and maintain inter-spinous space in between first and second spinous processes, wherein the spacer is configured to attach to at least one of the first and second elongate clamping structures at a location without prongs, wherein the spacer has a proximal portion and two protrusions extending distally away from the proximal portion and wherein the spacer defines a hole in the proximal portion of the spacer for connecting the spacer to at least one of the first and second elongate clamping structures;
and
a ratcheting mechanism connecting the first elongate clamping structure to the second elongate clamping structure, wherein the ratcheting mechanism comprises a rod extending at least partially through a first hole defined in the first elongate clamping structure and a second hole defined in the second elongate clamping structure such that the first elongate clamping structure can at least partially rotate with respect to the second elongate clamping structure, wherein the spinous process fixation device is configured to ratchet and fix the first spinous process with respect to the second spinous process with the first spinous process positioned between the first and second spinous process engagement surfaces so as to be engaged by the first and third sets of bone fastener prongs and with the second spinous process positioned between the first and second spinous process engagement surfaces so as to be engaged by the second and fourth sets of bone fastener prongs.

2 more elements

A spinous process fixation device comprising:

a first elongate clamping structure extending from a first end to a second end and having a first spinous process engagement surface between the first end and the second end with a first set of bone fastener prongs extending from the first spinous process engagement surface proximate the first end and a second set of bone fastener prongs extending from the first spinous process engagement surface proximate the second end, wherein the first set of bone fastener prongs is separated from the second set of bone fastener prongs by a first portion of the first spinous process engagement surface that does not include bone fastener prongs;
a second elongate clamping structure extending from a third end to a fourth end and having a second spinous process engagement surface between the third end and the fourth end with a third set of bone fastener prongs extending from the second spinous process engagement surface proximate the third end and a fourth set of bone fastener prongs extending from the second spinous process engagement surface proximate the fourth end, wherein the third set of bone fastener prongs is separated from the fourth set of bone fastener prongs by a second portion of the second spinous process engagement surface that does not include bone fastener prongs;
and
a ratcheting mechanism connecting the first elongate clamping structure to the second elongate clamping structure, wherein the ratcheting mechanism comprises a rod extending at least partially through a first hole defined in the first elongate clamping structure and a second hole defined in the second elongate clamping structure, wherein the ratcheting mechanism further comprises a pawl pivotably mounted via a pivot pin and engageable with a plurality of teeth of the ratchet mechanism to allow for rotation to ratchet in a first direction and to inhibit rotation in an opposite direction, wherein tightening of the ratchet mechanism is configured to move the first elongate clamping surface toward the second elongate clamping surface to fix a first spinous process with respect to a second spinous process with the first spinous process positioned between the first and second spinous process engagement surfaces so as to be engaged by the first and third sets of bone fastener prongs and with the second spinous process positioned between the first and second spinous process engagement surfaces so as to be engaged by the second and fourth sets of bone fastener prongs.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

15/693,594Filed 1 Sep 2017

Priority

12 Apr 2005

Published

11 Jan 2018

Term ends

Not estimatedThe source records don’t support an estimate.

Classification26 codes

A61B 17/7047
Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant: clamps comprising opposed elements which grasp one…
A61B 17/0642
Surgical staples, i.e. penetrating the tissue: for bones, e.g. for osteosynthesis or connecting tendon to bone
A61B 17/0643
Surgical staples, i.e. penetrating the tissue: with separate closing member, e.g. for interlocking with staple
A61B 17/068
Surgical instruments, devices or methods: surgical staplers , e.g. containing multiple staples or clamps

Family

Application60/670,231Us provisional application · filed 12 Apr 2005

Application11/208,644Continuation in part · filed 23 Aug 2005

Application11/536,815Continuation in part · filed 29 Sep 2006

Application11/842,855Continuation in part · filed 21 Aug 2007

Application12/054,335Continuation in part · filed 24 Mar 2008

Application12/471,345Continuation in part · filed 22 May 2009

Application12/471,340Continuation in part · filed 22 May 2009

Application13/101,135Continuation · filed 4 May 2011

Application14/337,210Continuation · filed 21 Jul 2014

Application15/693,594Continuation

Application13/101,135Continuation in part