US6325827B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intervertebral implant
Assignee: BlackSheep Tech Inc
•
Filing: 1999-04-09
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Granted: 2001-12-04
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Expires: 2019-04-09
Abstract
Abstract An intervertebral implant has an elongated body that is narrower on each end than in the middle thereof. The body includes interconnected, parallel walls that include barbs positioned along the outer edges thereof. The barbs are typically inclined rearwardly thereby allowing easy insertion, yet preventing retropulsion or migration of the implant from the vertebral interspace. A distraction tool includes a distal end having a cross section that has two diagonally opposed rounded corners and two diagonally opposed square corners. An intervertebral implant instrumentation kit for surgically inserting an intervertebral implant into the interspace between adjacent vertebrae includes a distraction tool and the intervertebral implant.
Inventors
- 👤 Paul S. Lin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:52
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61F2/4455; A61B; A61B17/00; A61B17/02; A61B17/025; A61B2017/0256; A61F2/3094; A61F2/30965; A61F2/442; A61F2/46; A61F2/4601; A61F2/28; A61F2002/2817; A61F2002/2835; A61F2002/30001; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30125; A61F2002/30138; A61F2002/30143; A61F2002/30154; A61F2002/30156; A61F2002/30199; A61F2002/30224; A61F2002/30316; A61F2002/30329; A61F2002/30331; A61F2002/30354; A61F2002/30355; A61F2002/30362; A61F2002/30364; A61F2002/30367; A61F2002/30383; A61F2002/30476; A61F2002/30507; A61F2002/30535; A61F2002/30593; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30774; A61F2002/30777; A61F2002/30784; A61F2002/30785; A61F2002/30789; A61F2002/30904; A61F2002/448; A61F2002/449; A61F2220/00; A61F2220/0025; A61F2220/0033; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0008; A61F2230/0017; A61F2230/0021; A61F2230/0023; A61F2230/0063; A61F2230/0069; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00017; A61F2310/00023
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
90 words
An intervertebral implant comprising: a. an elongated body having interconnected parallel side walls spaced apart; b. said walls each having two ends and a middle, and having upper and lower surfaces; c. said walls being shorter on each end than in the middle thereof; said upper and lower surfaces being provided with multiple barbs; and d. said barbs defined by front faces having a rearward tapered angle and connected substantially vertical rear faces; and e. a bone material inserted between said walls, said bone material provided within a bag member.
Claim 2
Dependent Claim
90 words
An intervertebral implant comprising: a. an elongated body having interconnected parallel side walls spaced apart; b. said walls each having two ends and a middle, and having upper and lower surfaces; c. said walls being shorter on each end than in the middle thereof; said upper and lower surfaces being provided with multiple barbs; and d. said barbs defined by front faces having a rearward tapered angle and connected substantially vertical rear faces; and e. a bone material inserted between said walls, said bone material provided within a bag member.
Claim 3
Dependent Claim
92 words
An intervertebral implant comprising: a. an elongated body having interconnected parallel side walls spaced apart; b. said walls each having two ends and a middle, and having upper and lower surfaces; c. said walls being shorter on each end than in the middle thereof; said upper and lower surfaces being provided with multiple barbs; d. said barbs defined by front faces having a rearward tapered angle and connected rear faces; and e. wherein said rear faces of said barbs are angled rearwardly relative to a direction of insertion of said intervertebral implant.
Claim 4
Dependent Claim
92 words
An intervertebral implant comprising: a. an elongated body having interconnected parallel side walls spaced apart; b. said walls each having two ends and a middle, and having upper and lower surfaces; c. said walls being shorter on each end than in the middle thereof; said upper and lower surfaces being provided with multiple barbs; d. said barbs defined by front faces having a rearward tapered angle and connected rear faces; and e. wherein said rear faces of said barbs are angled rearwardly relative to a direction of insertion of said intervertebral implant.
Claim 5
Dependent Claim
13 words
The intervertebral implant of claim 2 , wherein said walls include openings therein.
Claim 6
Dependent Claim
17 words
The intervertebral implant of claim 2 , wherein said body comprises titanium, titanium alloy or stainless steel.
Claim 7
Dependent Claim
12 words
The intervertebral implant of claim 4 , wherein said body comprises titanium.
Claim 8
Dependent Claim
16 words
The intervertebral implant of claim 2 , wherein a bone material is inserted between said walls.
Claim 9
Dependent Claim
17 words
The intervertebral implant of claim 6 , wherein said bone material is provided within a bag member.
Claim 10
Dependent Claim
17 words
The intervertebral implant of claim 7 , wherein said bag member is constructed of a polymer material.
Claim 11
Dependent Claim
17 words
The intervertebral implant of claim 7 , wherein said bone material is comprised of a morphogenic protein.
Claim 12
Dependent Claim
104 words
An intervertebral implant system comprising: a. first and second elongated bodies each being narrower on each end than in the middle thereof; b. said bodies each having interconnected parallel walls; c. said parallel walls being shorter on each end than in the middle thereof, and having upper and lower surfaces, said surfaces being provided with multiple barbs; d. said barbs defined by front faces having a rearward tapered angle and connected rear; e. said rear faces of said barbs are angled rearwardly relative to the direction of insertion of said implant; and f. an interconnecter for connecting said first body to said second body.
Claim 13
Dependent Claim
104 words
An intervertebral implant system comprising: a. first and second elongated bodies each being narrower on each end than in the middle thereof; b. said bodies each having interconnected parallel walls; c. said parallel walls being shorter on each end than in the middle thereof, and having upper and lower surfaces, said surfaces being provided with multiple barbs; d. said barbs defined by front faces having a rearward tapered angle and connected rear; e. said rear faces of said barbs are angled rearwardly relative to the direction of insertion of said implant; and f. an interconnecter for connecting said first body to said second body.
Claim 14
Dependent Claim
68 words
The intervertebral implant of claim 10 , wherein said interconnecter comprises: a. an elongated member having a channel along a portion of each end thereof; b. a slot positioned along an outer end of each of said bodies; said slot being sized to receive said elongated member therein; and c. a connecting device for securely attaching said elongated member to said outer end of each of said bodies.
Claim 15
Dependent Claim
29 words
The intervertebral implant of claim 11 , wherein said connecting device is selected from the group consisting of: a rivet member, a press-fit pin and a threaded screw member.
Claim 16
Dependent Claim
52 words
The intervertebral implant of claim 10 , wherein said first body and said second body each include openings therein and said interconnecter comprises an elongated member having an exterior shape; said elongated member being slidably and adjustably positioned within said openings that substantially correspond to the exterior shape of said elongate member.
Claim 17
Dependent Claim
21 words
The intervertebral implant of claim 13 , wherein said elongate member is adjustably secured to said body with a securing member.
Claim 18
Dependent Claim
16 words
The intervertebral implant of claim 14 , wherein said securing member comprises a threaded screw member.
Claim 19
Dependent Claim
94 words
An implant for locating intermediate joint structures comprising: a. an elongated body having interconnected parallel side walls spaced apart; b. said walls each having two ends and a middle, and having upper and lower surfaces; c. said walls being shorter on each end than in the middle thereof; said upper and lower surfaces being provided with multiple barbs: and d. said barbs defined by front faces having a rearwardly tapered angle and connected substantially vertical rear faces; and e. a bone material inserted between said walls, said bone material provided within a bag member.
Claim 20
Dependent Claim
94 words
An implant for locating intermediate joint structures comprising: a. an elongated body having interconnected parallel side walls spaced apart; b. said walls each having two ends and a middle, and having upper and lower surfaces; c. said walls being shorter on each end than in the middle thereof; said upper and lower surfaces being provided with multiple barbs: and d. said barbs defined by front faces having a rearwardly tapered angle and connected substantially vertical rear faces; and e. a bone material inserted between said walls, said bone material provided within a bag member.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-12-03 | 2005-06-04 | 2005-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-12-03 | 2009-06-04 | 2009-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-12-03 | 2013-06-04 | 2013-12-04 | $7700.00 | Window Closed / Lapsed |