Source: http://www.google.com/patents/US7011684?dq=7493558
Timestamp: 2017-05-25 23:09:01
Document Index: 605206131

Matched Legal Cases: ['Application No. 60', 'Application No. 60', 'art 13', 'art 11', 'art 93', 'art 91']

Patent US7011684 - Intervertebral disk prosthesis - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsAn intervertebral disk prosthesis includes a first part, and the first part has a top, a bottom having an opening, an outer surface, an inner surface and a socket extending into an interior of the first part from the opening and defined by the inner surface. The outer surface proximate the top contacts...http://www.google.com/patents/US7011684?utm_source=gb-gplus-sharePatent US7011684 - Intervertebral disk prosthesisAdvanced Patent SearchTry the new Google Patents, with machine-classified Google Scholar results, and Japanese and South Korean patents.Publication numberUS7011684 B2Publication typeGrantApplication numberUS 10/345,634Publication dateMar 14, 2006Filing dateJan 16, 2003Priority dateJan 17, 2002Fee statusPaidAlso published asDE60335519D1, EP1471855A2, EP1471855A4, EP1471855B1, US7740658, US20030135278, US20050043798, US20060155378, WO2003061364A2, WO2003061364A3Publication number10345634, 345634, US 7011684 B2, US 7011684B2, US-B2-7011684, US7011684 B2, US7011684B2InventorsWalter W. EckmanOriginal AssigneeConcept Matrix, LlcExport CitationBiBTeX, EndNote, RefManPatent Citations (42), Non-Patent Citations (7), Referenced by (106), Classifications (37), Legal Events (7) External Links: USPTO, USPTO Assignment, EspacenetIntervertebral disk prosthesis
18. The intervertebral disk prosthesis of claim 1, wherein the freedom of movement is limited to between about 2–15 degrees tilt in any direction.
This application claims the benefit of U.S. Provisional Application No. 60/369,667 filed Apr. 2, 2002 entitled “DISK PROSTHESIS” and U.S. Provisional Application No. 60/349,743 filed Jan. 17, 2002 entitled “DISK PROSTHESIS,” the entire contents of which are incorporated by reference herein.
The length of the disk prosthesis as measured from the distal end 10 a to the proximal end 10 b is approximately 10–30 mm, depending on the particular intervertebral space 121 in which the disk prosthesis 10 is to be inserted. For example, the intervertebral space between lumbar vertebra LIII and lumbar vertebra LIV for an average male would accommodate a disk prosthesis 10 of a length between approximately 25–30 mm. But, the length of the disk prosthesis 10 could vary from the aforementioned range without departing from the spirit of the invention.
The width of the disk prosthesis 10 as measured between the first sidewall 10 e and the second sidewall 10 f of the disk prosthesis 10 will vary from approximately 10 mm to 25 mm depending upon the particular intervertebral space 121 in which the disk prosthesis 10 is to be inserted. For example, the intervertebral space between vertebra LIII and vertebra LIV in an average male would accommodate a disk prosthesis 10 having a width of approximately 15–20 mm. But, the width of the disk prosthesis 10 could vary from the aforementioned range without departing from the spirit of the invention.
The height of the disk prosthesis 10 as measured between the upper wall 10 d and the lower wall 10 c of the disk prosthesis 10 will vary from approximately 5 mm to 25 mm depending upon the particular intervertebral space 121 in which the disk prosthesis 10 is to be inserted. For example, the intervertebral space between vertebra LIII and vertebra LIV in an average male would accommodate a disk prosthesis 10 having a height of approximately 8–16 mm. But, the height of the disk prosthesis 10 could vary from the aforementioned range without departing from the spirit of the invention.
FIG. 5 shows a side sectional view of the disk prosthesis 10 as viewed from lines 5—5 of FIG. 4. FIG. 5 more clearly shows the cooperative interaction between the cap 13 and the base 11. As mentioned above, a portion 11 e of the outer surface 11 a of the base 11 proximate the top 11 d of the base 11 cooperatively engages the inner surface 13 b of the cap 13 thereby allowing at least two-degrees of freedom of movement. Motion allowed includes rotation (roll) and tilting or angulation (pitch) in any direction, but not motion in the plane from front to back or side to side (i.e., parallel to the disk space). The inner surface 13 b and the portion 11 e of the outer surface 11 a that contacts the inner surface 13 b are generally concealed.
FIG. 8 shows a side view of the lumbar region 122 of a portion of a human spine 120. In particular, the disk prosthesis 10 in accordance with the first preferred embodiment of the present invention is shown installed between lumbar vertebra LIII and lumbar vertebra LIV. In this particular installation, the second sidewall 10 f of the disk prosthesis 10 is placed on the anterior side of the LIII–LIV intervertebral space, the first sidewall 10 e of the disk prosthesis 10 is placed closest to the posterior side of the LIII–LIV intervertebral space, the upper wall 10 d of the disk prosthesis 10 is adjacent to vertebra LIII, and the lower wall 10 c of the disk prosthesis 10 is adjacent to vertebra LIV. In this example, the surgeon would have inserted the distal end 10 a of the disk prosthesis 10 into the gap between the LIII–LIV vertebrae as depicted in FIG. 9 by a directional arrow D. It is just as likely and possible for the surgeon to place the distal end 10 a of the disk prosthesis 10 through the space between the LIII–LIV vertebrae in the direction of a directional arrow C (FIG. 9) or from any other direction.
FIG. 6A shows a side sectional view of a second preferred embodiment of a disk prosthesis 60 in accordance with the present invention. The disk prosthesis 60 has a distal end 60 a, a proximal end 60 b, a lower wall 60 c, an upper wall 60 d, a first sidewall 60 e (FIGS. 7A–7C), and a second sidewall (not shown). The disk prosthesis includes a first part or a cap 63. The cap 63 includes a top 63 d, a bottom 63 c having an opening 63 f, an outer surface 63 a, an inner surface 63 b and a socket 63 e extending into an interior of the cap 63 from the opening and defined by the inner surface 63 b. The outer surface 63 a proximate the top 63 d contacts a concave portion 100 b of a first vertebra 100. The disk prosthesis 60 further includes a second part or a base 61 including a top 61 d, a bottom 61 c, and an outer surface 61 a. The outer surface 61 a proximate the bottom 61 c contacts a concave portion 100 a of a second vertebra 100, and the outer surface 61 a of the base 61 proximate the top 61 d of the base 61 cooperatively engages the inner surface 63 b of the cap 63 thereby allowing at least two-degrees of freedom of movement.
FIGS. 11A–11B show a fifth preferred embodiment of a disk prosthesis in accordance with the present invention. The disk prosthesis 90 has a distal end 90 a, a proximal end 90 b, a lower wall 90 c, an upper wall 90 d, a first sidewall (not shown), and a second sidewall (not shown). The disk prosthesis includes a first part or a cap 93. The cap 93 includes a top 93 d, a bottom 93 c having an opening 93 f, an outer surface 93 a, an inner surface 93 b and a socket 93 e extending into an interior of the cap 93 from the opening and defined by the inner surface 93 b. The outer surface 93 a proximate the top 93 d contacts a concave portion 100 b of a first vertebra 100. The disk prosthesis 90 further includes a second part or a base 91 including a top 91 d, a bottom 91 c, and an outer surface 91 a. The outer surface 91 a proximate the bottom 91 c contacts a concave portion 100 a of a second vertebra 100, and the outer surface 91 a of the base 91 proximate the top 91 d of the base 91 cooperatively engages the inner surface 93 b of the cap 93 thereby allowing at least two-degrees of freedom of movement. The cap 93 is preferably slightly smaller than the base 91 in both length and width in order to allow freedom movement even when bone growth reaches near the edges of the cap 93 and/or base 91. Alternatively, the base 91 may be slightly smaller than the cap 93 for similar reasons without departing from the present invention.
FIGS. 12A–12B show a sixth preferred embodiment of a disk prosthesis 190 in accordance with the present invention. The disk prosthesis 190 has a distal end 190 a, a proximal end 190 b, a lower wall 190 c, an upper wall 190 d, a first sidewall 190 e, and a second sidewall 190 f. The disk prosthesis includes a first part or a cap 193. The cap 193 includes a top 193 d, a bottom 193 c having an opening 193 f, an outer surface 193 a, an inner surface (not shown) and a socket (not shown) extending into an interior of the cap 193 from the opening and defined by the inner surface. The outer surface 193 a proximate the top 193 d contacts a concave portion 100 b of a first vertebra 100. The disk prosthesis 190 further includes a second part or a base 191 including a top 191 d, a bottom 191 c, and an outer surface 191 a. The outer surface 191 a proximate the bottom 191 c contacts a concave portion 100 a of a second vertebra 100, and the outer surface 191 a of the base 191 proximate the top 191 d of the base 191 cooperatively engages the inner surface (not shown) of the cap 193 thereby allowing at least two-degrees of freedom of movement. Further, the disk prosthesis 190 includes at least one upper arch 150 and at least one lower arch 152, but preferably the disk prosthesis 190 includes three upper arches 150 and three lower arches 152 similar to the disk prosthesis 90. The arches 150, 152 are generally disposed symmetrically along and about a centerline of the longer axis of the disk prosthesis 190 and are secured to the body of the disk prosthesis 190. The top of the cap 193 has a recess and the bottom of the base 191 has a recess, the recesses include a platform 193 h and 191 h, respectively. The platforms 191 h, 193 h are preferably are texturized and/or coated with a material to promote bone growth.
FIGS. 13A–13B show a seventh preferred embodiment of a disk prosthesis 290 in accordance with the present invention. The disk prosthesis 290 has a distal end 290 a, a proximal end 290 b, a lower wall 290 c, an upper wall 290 d, a first sidewall 290 e, and a second sidewall 290 f. The disk prosthesis includes a first part or a cap 293. The cap 293 includes a top 293 d, a bottom 293 c having an opening 293 f, an outer surface 293 a, an inner surface (not shown) and a socket (not shown) extending into an interior of the cap 293 from the opening and defined by the inner surface. The outer surface 293 a proximate the top 293 d contacts a concave portion 100 b of a first vertebra 100. The disk prosthesis 290 further includes a second part or a base 291 including a top 291 d, a bottom 291 c, and an outer surface 291 a. The outer surface 291 a proximate the bottom 291 c contacts a concave portion 100 a of a second vertebra 100, and the outer surface 291 a of the base 291 proximate the top 291 d of the base 291 cooperatively engages the inner surface (not shown) of the cap 293 thereby allowing at least two-degrees of freedom of movement. Further, the disk prosthesis 290 includes at least one upper arch 150 and at least one lower arch 152, but preferably the disk prosthesis 290 includes three upper arches 150 and three lower arches 152 similar to the disk prosthesis 90. The arches 150, 152 are generally disposed symmetrically along and about a centerline of the longer axis of the disk prosthesis 290 and are secured to the body of the disk prosthesis 290. The top of the cap 293 and the bottom of the base 291 are preferably flatly shaped. The flat surfaces preferably are texturized and/or coated with a material to promote bone growth.
FIGS. 14A–14B show an eighth preferred embodiment of a disk prosthesis 390 in accordance with the present invention. The disk prosthesis 390 has a distal end 390 a, a proximal end 390 b, a lower wall 390 c, an upper wall 390 d, a first sidewall 390 e, and a second sidewall 390 f. The disk prosthesis includes a first part or a cap 393. The cap 393 includes a top 393 d, a bottom 393 c, an outer surface 393 a, an inner surface (not shown) and a socket (not shown) extending into an interior of the cap 393 from the opening and defined by the inner surface 393 b. The outer surface 393 a proximate the top 393 d contacts a concave portion 100 b of a first vertebra 100. The disk prosthesis 390 further includes a second part or a base 391 including a top 391 d, a bottom 391 c, and an outer surface 391 a. The outer surface 391 a proximate the bottom 391 c contacts a concave portion 100 a of a second vertebra 100, and the outer surface 391 a of the base 391 proximate the top 391 d of the base 391 cooperatively engages the inner surface (not shown) of the cap 393 thereby allowing at least two-degrees of freedom of movement. Further, the disk prosthesis 390 includes at least one row of sharpened cones 153 on the top of the cap 393 and at least one row of sharpened cones 153 on the bottom of the base 391, but preferably the disk prosthesis 390 includes three rows of sharpened cones 153 on the top of the cap 393 and three rows of sharpened cones 153 on the bottom of the base 391. The rows of sharpened cones 153 are generally disposed symmetrically along and about a centerline of the longer axis of the disk prosthesis 390 and are secured to the body of the disk prosthesis 390. The top of the cap 393 and the bottom of the base 391 are preferably convexly shaped to more readily find the contours of the concave portions 100 a, 100 b of adjacent vertebrae 100. Preferably, the surface of the disk prosthesis 390 proximate the rows of sharpened cones 153 is texturized and/or coated with a material to promote bone growth such as hydroxyapatite.
FIGS. 15A–15B show a fourth insertion tool 220 for a disk prosthesis 10 (60, 70, or 80) having lower and upper openings 16 a, 16 b (66 a, 66 b, 76 a, 76 b, 86 a, 86 b), respectively. The insertion tool 220 has a first finger 224 configured to cooperatively engage the lower opening 16 a and a second finger 222 configured to cooperatively engage the upper opening 16 b. The fingers 222, 224 have outer surfaces which are shaped to match the contoured shape of the disk prosthesis 10 to allow a smooth insertion of the disk prosthesis 10. The combination of the insertion tool 220 and the disk prosthesis 10 when the first and second fingers 222, 224 are engaged with the ingrowth openings 16 a, 16 b, forms a combined structure having generally rounded exposed surfaces. The fingers 222, 224 also prevent foreign matter and debris from getting caught in the openings 16 a, 16 b during insertion. Because the fingers 222, 224 grasp the disk prosthesis 10 in a specific orientation defined by the upper and lower openings 16 a, 16 b, the insertion tool 220 provides the surgeon with means to orient the disk prosthesis 10 correctly during insertion.
The insertion tool 220 further includes a driving member 226 that is configured to engage the body of the disk prosthesis 10. The driving member 226 is configured to be impacted such that during insertion a surgeon may tap or hammer the driving member 226 to push the disk prosthesis 10 through a small opening. Preferably, the first and second fingers 222, 224 are retractable relative to the driving member 226. Thus, after the disk prosthesis 10 is inserted to a desired position, the first and second fingers 222, 224 are retracted while the driving member 226 holds the disk prosthesis 10 in place. Optionally, the disk prosthesis 10 may have grooves 166 (shown in phantom in FIG. 15B) extending from the upper and lower openings 16 a, 16 b to facilitate the removal of the retractable fingers 222, 224. Optionally, the insertion tool 220 includes third and fourth fingers 228 (shown in phantom in FIGS. 15A–15B) configured to retractably move along the space between the upper part 13 and the lower part 11 of the body of the disk prosthesis 10.
FIGS. 16A–16B is a side elevational view of a fifth insertion tool 230 for a disk prosthesis 90 (190, 290 or 390) having upper and lower openings 96 a, 96 b and upper and lower arches 150, 152. For example, the upper finger 232 has first and second prongs 232 a, 232 b for straddling the upper arches 150 as best seen in FIG. 16B. The insertion tool 230 is similar to the insertion tool 220, but each of the retractable fingers 232, 234 is forked to accommodate the arches 150, 152. Preferably, the arches 150, 152 and the rows of cones 153 are just below the outer surface of the fingers 232, 234, so that the arches 150, 152 do not injure adjacent tissue during insertion. Optionally, the insertion tool 230 includes third and fourth fingers 238 (shown in phantom in FIGS. 16A–16B) configured to retractably move between the space between the upper part 93 and the lower part 91 of the body of the disk prosthesis 90. Furthermore, it would be obvious to one skilled in the art to utilize multiple prongs in each of the retractable fingers 232, 234 in order to accommodate multiple arches 150, 152 (such as on disk prostheses 190 and 290) and multiple rows of sharpened cones 153 (such as on disk prosthesis 390).
Preferably, the intervertebral disk prostheses 10, 60, 70, 90, 190, 290 and 390 have a freedom of movement that is limited to between about 2–15 degrees tilt in any direction. The annular ligament of a human being is built for physiologic limiting thereby stopping over rotation. The facets in the lumbar region also limit rotation and tilt.
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A61F2002/30242, A61F2310/00029, A61F2002/30784, A61F2/4611, A61F2310/00023, A61F2310/00017, A61F2230/0076, A61F2230/0004, A61F2002/30797, A61F2230/0071, A61F2002/30685, A61F2/4425, A61F2002/30462, A61F2002/4627, A61F2002/3049, A61F2220/0033, A61F2002/30649, A61F2220/0025, A61F2310/00796, A61F2310/00179, A61F2002/30807, A61F2002/4623, A61F2/30907, A61F2220/0075, A61F2002/30331, A61F2002/4629European ClassificationA61F2/46B7, A61F2/44D2Legal EventsDateCodeEventDescriptionFeb 13, 2003ASAssignmentOwner name: CONCEPT MATRIX, LLC, FLORIDAFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ECKMAN, WALTER W.;REEL/FRAME:013756/0929Effective date: 20030122Aug 12, 2008CCCertificate of correctionSep 14, 2009FPAYFee paymentYear of fee payment: 4Mar 14, 2013FPAYFee paymentYear of fee payment: 8Jul 6, 2015ASAssignmentOwner name: AMENDIA, INC., GEORGIAFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CONCEPT MATRIX, LLC;REEL/FRAME:035995/0228Effective date: 20150610May 2, 2016ASAssignmentOwner name: ANTARES CAPITAL LP, AS AGENT, ILLINOISFree format text: SECURITY INTEREST;ASSIGNOR:AMENDIA, INC.;REEL/FRAME:038587/0753Effective date: 20160429May 4, 2016ASAssignmentOwner name: CORTLAND CAPITAL MARKET SERVICES LLC, AS AGENT, ILFree format text: SECURITY INTEREST;ASSIGNOR:AMENDIA, INC.;REEL/FRAME:038606/0520Effective date: 20160429RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services