US6682534B2 — Endplate preparation instrument and associated me…

Claim 1

Independent Claim 100 words

A surgical bone preparation instrument, comprising: a sleeve member having a proximal end, a distal end, and an inner lumen formed therein, the sleeve member having at least one distractor member protruding distally from the distal end and adapted to be disposed between adjacent bone structures; and an elongate member at least partially rotatably disposed within the sleeve member, the elongate member having a proximal end and a distal end with first and second blade members disposed on a portion of the distal end, each of the first and second blade members having a longitudinally oriented cutting surface formed thereon.

Claim 2

Dependent Claim 100 words

A surgical bone preparation instrument, comprising: a sleeve member having a proximal end, a distal end, and an inner lumen formed therein, the sleeve member having at least one distractor member protruding distally from the distal end and adapted to be disposed between adjacent bone structures; and an elongate member at least partially rotatably disposed within the sleeve member, the elongate member having a proximal end and a distal end with first and second blade members disposed on a portion of the distal end, each of the first and second blade members having a longitudinally oriented cutting surface formed thereon.

Claim 3

Dependent Claim 51 words

The surgical bone preparation instrument of claim 1 , wherein the first and second blade members each have a distal end and a proximal end with the cutting surface extending therebetween, the distal end of the second blade member being disposed proximal of the distal end of the first blade member.

Claim 4

Dependent Claim 30 words

The surgical bone preparation instrument of claim 2 , wherein the proximal end of the first blade member is disposed distal of the distal end of the second blade member.

Claim 5

Dependent Claim 68 words

The surgical bone preparation instrument of claim 1 , wherein the first and second blade members each have a distal end and a proximal end with the cutting surface extending therebetween, each cutting surface having first and second opposed leading edges adapted to remove a portion of a surface of a bone structure upon rotation of the elongate member in a first direction and a second, opposite direction.

Claim 6

Dependent Claim 40 words

The surgical bone preparation instrument of claim 2 , wherein the first and second blade members of the elongate member extend beyond the distal end of the sleeve member and are disposed adjacent to the at least one distractor member.

Claim 7

Dependent Claim 21 words

The surgical bone preparation instrument of claim 1 , wherein the proximal end of the elongate member includes a gripping element.

Claim 8

Dependent Claim 17 words

The surgical bone preparation instrument of claim 6 , wherein the gripping element is a knurled surface.

Claim 9

Dependent Claim 32 words

The surgical bone preparation instrument of claim 1 , wherein the distal end of the sleeve member includes a stop member adapted to limit penetration of the instrument between adjacent bone structures.

Claim 10

Dependent Claim 39 words

The surgical bone preparation instrument of claim 8 , wherein the stop member comprises a flange member that is oriented substantially perpendicular to a longitudinal axis of the instrument, the flange member extending radially outward from the sleeve member.

Claim 11

Dependent Claim 51 words

The surgical bone preparation instrument of claim 9 , wherein the at least one distractor member comprises first and second opposed members that extend distally from the stop member, the opposed members being adapted to be disposed between adjacent bone structures for separating the adjacent bone structures by a predetermined distance.

Claim 12

Dependent Claim 36 words

The surgical bone preparation instrument of claim 10 , wherein the first and second opposed members each include a tapered distal end to facilitate insertion of the first and second opposed members between adjacent bone structures.

Claim 13

Dependent Claim 65 words

The surgical bone preparation instrument of claim 1 , further comprising a cutting template having a circumferential slot formed in the sleeve member and extending over a portion of a circumference of the sleeve member, and an engaging element extending from the elongate member and into the circumferential slot in the sleeve member, the cutting template being effective to limit rotation of the elongate member.

Claim 14

Dependent Claim 36 words

The surgical bone preparation instrument of claim 12 , wherein the slot defines a cutting path extending over a range of between about 80° and 120° around a portion of the circumference of the sleeve member.

Claim 15

Dependent Claim 30 words

The surgical bone preparation instrument of claim 13 , wherein the cutting path extends over a range of about 90° around a portion of the circumference of the sleeve member.

Claim 16

Dependent Claim 55 words

The surgical bone preparation instrument of claim 1 , wherein the cutting surface of each of the first and second blade members is angularly oriented such that a proximal portion of the cutting surface is disposed a greater distance from a longitudinal axis of the elongate member than a distal portion of the cutting surface.

Claim 17

Dependent Claim 33 words

The surgical bone preparation instrument of claim 1 , wherein the cutting surface of each of the first and second blade members is oriented parallel to a longitudinal axis of the elongate member.

Claim 18

Dependent Claim 107 words

A surgical bone preparation instrument, comprising: a housing component having a proximal end and a distal end with a bore extending between the proximal and distal ends; a distractor protruding distally from the distal end of the housing component and adapted to be disposed between adjacent bone structures; and a rotatable cutting member, a portion of which is disposed within the bore of the housing component, the rotatable cutting member having a proximal handle portion and a distal cutting portion with at least one cutting element disposed thereon, the cutting element being adapted to remove only substantially diagonally opposed regions of bone from the adjacent bone structures.

Claim 19

Dependent Claim 107 words

A surgical bone preparation instrument, comprising: a housing component having a proximal end and a distal end with a bore extending between the proximal and distal ends; a distractor protruding distally from the distal end of the housing component and adapted to be disposed between adjacent bone structures; and a rotatable cutting member, a portion of which is disposed within the bore of the housing component, the rotatable cutting member having a proximal handle portion and a distal cutting portion with at least one cutting element disposed thereon, the cutting element being adapted to remove only substantially diagonally opposed regions of bone from the adjacent bone structures.

Claim 20

Dependent Claim 29 words

The surgical bone preparation instrument of claim 17 , wherein a portion of the rotatable cutting member is removably and replaceably disposed within the bore of the housing component.

Claim 21

Dependent Claim 54 words

The surgical bone preparation instrument of claim 17 , wherein the rotatable cutting member has a body portion with proximal and distal ends and a longitudinal axis extending therebetween, and wherein the at least one cutting element comprises first and second blade members extending radially outward from the distal end of the body portion.

Claim 22

Dependent Claim 43 words

The surgical bone preparation instrument of claim 19 , wherein the first and second blade members are adapted to remove a portion of the adjacent bone structures upon rotation of the elongate member in a first direction and in a second, opposite direction.

Claim 23

Dependent Claim 26 words

The surgical bone preparation instrument of claim 19 , wherein the first blade member is opposed to and offset with respect to the second blade member.

Claim 24

Dependent Claim 51 words

The surgical bone preparation instrument of claim 21 , wherein the first and second blade members each include at least one cutting surface angularly oriented such that a proximal portion of the cutting surface is disposed a greater distance from the longitudinal axis than a distal portion of the cutting surface.

Claim 25

Dependent Claim 47 words

The surgical bone preparation instrument of claim 22 , wherein the at least one cutting surface of the first and second blade members are disposed radially outward from the body portion of the rotatable cutting member at a distance of between about 1 mm and 5 mm.

Claim 26

Dependent Claim 42 words

The surgical bone preparation instrument of claim 23 , wherein the at least one cutting surface of the first and second blade members are disposed radially outward from the body portion of the rotatable cutting member at a distance of 2 mm.

Claim 27

Dependent Claim 43 words

The surgical bone preparation instrument of claim 17 , wherein the distractor comprises first and second opposed members each having a proximal end and a distal end, the proximal end being mated to the housing component and the distal end being substantially bullet-shaped.

Claim 28

Dependent Claim 32 words

The surgical bone preparation instrument of claim 17 , wherein the distal end of the housing includes a shoulder for preventing the housing from penetrating a space between the adjacent bone structures.

Claim 29

Dependent Claim 16 words

The surgical bone preparation instrument of claim 26 , wherein the adjacent bone structures are vertebrae.

Claim 30

Dependent Claim 33 words

The surgical bone preparation instrument of claim 17 , wherein the housing component is substantially cylindrical and includes a rotation limiting element defining a cutting path for the at least one cutting element.

Claim 31

Dependent Claim 33 words

The surgical bone preparation instrument of claim 28 , wherein the rotation limiting element comprises a circumferential slot formed in the housing and extending over a portion of a circumference of the housing.

Claim 32

Dependent Claim 42 words

The surgical bone preparation instrument of claim 29 , wherein the rotatable cutting member includes a pin member disposed on the rotatable cutting member and extending radially therefrom, the pin member adapted to be disposed within the circumferential slot in the housing.

Claim 33

Dependent Claim 52 words

The surgical bone preparation instrument of claim 17 , wherein the cutting element includes at least one cutting surface angularly oriented such that a proximal portion of the cutting surface is disposed a greater distance from a longitudinal axis of the rotatable cutting element than a distal portion of the cutting surface.

Claim 34

Dependent Claim 30 words

The surgical bone preparation instrument of claim 17 , wherein the cutting element includes at least one cutting surface oriented parallel to a longitudinal axis of the rotatable cutting element.

Claim 35

Independent Claim 151 words

A method for preparing the surface of adjacent vertebral bodies, comprising: providing a surgical bone preparation instrument having a sleeve member with a proximal end, a distal end, and an inner lumen formed therein, a distractor member extending distally from the distal end of the sleeve member and adapted to be disposed between adjacent bone structures, and a rotatable cutting member, a portion of which is disposed within the inner lumen of the sleeve member, the rotatable cutting element having a proximal handle portion and a distal cutting portion with opposed first and second cutting elements disposed thereon, each of the first and second cutting elements having a longitudinally oriented cutting surface formed thereon, inserting the distractor member of the surgical bone preparation instrument between adjacent vertebral bodies; and rotating the rotatable cutting member over a predetermined cutting path to remove a portion of the surface of the adjacent vertebral bodies.

Claim 36

Independent Claim 151 words

A method for preparing the surface of adjacent vertebral bodies, comprising: providing a surgical bone preparation instrument having a sleeve member with a proximal end, a distal end, and an inner lumen formed therein, a distractor member extending distally from the distal end of the sleeve member and adapted to be disposed between adjacent bone structures, and a rotatable cutting member, a portion of which is disposed within the inner lumen of the sleeve member, the rotatable cutting element having a proximal handle portion and a distal cutting portion with opposed first and second cutting elements disposed thereon, each of the first and second cutting elements having a longitudinally oriented cutting surface formed thereon, inserting the distractor member of the surgical bone preparation instrument between adjacent vertebral bodies; and rotating the rotatable cutting member over a predetermined cutting path to remove a portion of the surface of the adjacent vertebral bodies.

Claim 37

Dependent Claim 14 words

The method of claim 33 , wherein the rotatable cutting member is rotated manually.

Claim 38

Dependent Claim 32 words

The method of claim 33 , wherein the rotatable cutting member is rotated between about 80° and 120° in a first direction, and between about 80° and 120° in second, opposite direction.

Claim 39

Dependent Claim 26 words

The method of claim 33 , wherein the rotatable cutting member is rotated about 90° in a first direction, and about 90° in second, opposite direction.

Claim 40

Dependent Claim 49 words

The method of claim 33 , wherein the first cutting element is adapted to remove a portion of a first vertebral endplate, and the second cutting element is adapted to remove a portion of a second vertebral endplate, the first and second vertebral endplates being adjacent to each other.

Claim 41

Dependent Claim 36 words

The method of claim 37 , wherein the removed portion of the first vertebral endplate is formed in the anterior region, and the removed portion of the second vertebral endplate is formed in the posterior region.

Claim 42

Dependent Claim 46 words

The method of claim 38 , wherein the removed portion of the first vertebral endplate is formed in the first lateral half of the anterior region and the removed portion of the second vertebral endplate is formed in the second lateral half of the posterior region.

Claim 43

Dependent Claim 29 words

The method of claim 37 , wherein each of the first and second cutting elements is adapted to remove between about 10% and 50% of the bone structure surface.

Claim 44

Dependent Claim 26 words

The method of claim 40 , wherein each of the first and second cutting elements is adapted to remove about 25% of the bone structure surface.

Claim 45

Dependent Claim 98 words

A surgical bone preparation instrument, comprising: a sleeve member having a proximal end, a distal end, and an inner lumen formed therein, the sleeve member having at least one distractor member protruding distally from the distal end and adapted to be disposed between adjacent bone structures; and an elongate member at least partially rotatably disposed within the sleeve member, the elongate member having a proximal end and a distal end with a cutting means formed on a portion thereof, the cutting means being effective to remove only substantially diagonally opposed regions of bone from the adjacent bone structures.

Claim 46

Dependent Claim 98 words

A surgical bone preparation instrument, comprising: a sleeve member having a proximal end, a distal end, and an inner lumen formed therein, the sleeve member having at least one distractor member protruding distally from the distal end and adapted to be disposed between adjacent bone structures; and an elongate member at least partially rotatably disposed within the sleeve member, the elongate member having a proximal end and a distal end with a cutting means formed on a portion thereof, the cutting means being effective to remove only substantially diagonally opposed regions of bone from the adjacent bone structures.

Claim 47

Dependent Claim 21 words

The surgical bone preparation instrument of claim 42 , wherein the cutting means includes at least one longitudinally extending cutting surface.

Claim 48

Dependent Claim 32 words

The surgical bone preparation instrument of claim 42 , wherein the distal end of the sleeve member includes a stop member adapted to limit penetration of the instrument between adjacent bone structures.

Claim 49

Dependent Claim 51 words

The surgical bone preparation instrument of claim 44 , wherein the at least one distractor member comprises first and second opposed members that extend distally from the stop member, the opposed members being adapted to be disposed between adjacent bone structures for separating the adjacent bone structures by a predetermined distance.

Claim 50

Dependent Claim 65 words

The surgical bone preparation instrument of claim 42 , further comprising a cutting template having a circumferential slot formed in the sleeve member and extending over a portion of a circumference of the sleeve member, and an engaging element extending from the elongate member and into the circumferential slot in the sleeve member, the cutting template being effective to limit rotation of the elongate member.

Claim 51

Dependent Claim 36 words

The surgical bone preparation instrument of claim 46 , wherein the slot defines a cutting path extending over a range of between about 80° and 120° around a portion of the circumference of the sleeve member.

Claim 52

Dependent Claim 30 words

The surgical bone preparation instrument of claim 47 , wherein the cutting path extends over a range of about 90° around a portion of the circumference of the sleeve member.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	2007-01-26	2007-07-28	2008-01-27	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2011-01-26	2011-07-28	2012-01-27	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2015-01-26	2015-07-28	2016-01-27	$7700.00	Window Closed / Lapsed

Endplate preparation instrument and associated method

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