US5885292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Minimally invasive spinal surgical methods and instruments
Assignee: SDGI Holdings Inc
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Filing: 1997-09-29
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Granted: 1999-03-23
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Expires: 2017-09-29
Abstract
Abstract Minimally invasive spinal surgical techniques and tools are provided. The methods include separating the iliocostalis lumborum muscle from the anterior leaf of the thoracolumbar fascia to create a channel from the patient's skin to the intertransverse interval. In one embodiment, the method also includes delivering graft material through the channel to the intertransverse interval. A device according to one aspect of the present invention includes a retraction portion having a flattened plate configured to atraumatically retract tissue to create a working space within an endosurgical site and a curved shaft attached to the retraction portion. The shaft includes a bend having a radius of preferably 160 degrees. A gripping portion is attached to the shaft and is configured for manually gripping and manipulating the device.
Inventors
- 👤 Peter A. Moskovitz
- 👤 Scott Boden
- 👤 William F. McKay
- 👤 Joseph Moctezuma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:22
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/46; A61F2/4603; A61F2/4611; A61B; A61B17/00; A61B17/02; A61B17/0206; A61B17/025; A61B17/16; A61B17/1604; A61B17/1606; A61B17/1608; A61B17/1637; A61F2/44; A61F2/4455; A61F2/4601; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1442; A61B17/00234; A61B2017/00238; A61B2017/00261; A61B2017/0042; A61B2017/0256; A61B17/32; A61B2017/320044; A61F2/28; A61F2002/2835; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/30062; A61F2002/30108; A61F2002/3011; A61F2002/30138; A61F2002/30153; A61F2002/30199; A61F2002/30261; A61F2002/4635; A61F2/4644; A61F2002/4649; A61F2210/00; A61F2210/0004; A61F2230/00; A61F2230/0002; A61F2230/0017; A61F2230/0019; A61F2230/0063; A61F2230/0082; A61F2310/00; A61F2310/00005; A61F2310/00179; A61F2310/00293; Y; Y10; Y10S; Y10S606/00; Y10S606/907
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
54 words
A minimally invasive method for approaching the intertransverse interval of a lumbar motion segment of a patient, comprising: separating the iliocostalis lumborum muscle from the anterior leaf of the thoracolumbar fascia to create a channel from the patient's skin to the intertransverse interval, the channel having a diameter of less than about 4.0 cm.
Claim 2
Dependent Claim
54 words
A minimally invasive method for approaching the intertransverse interval of a lumbar motion segment of a patient, comprising: separating the iliocostalis lumborum muscle from the anterior leaf of the thoracolumbar fascia to create a channel from the patient's skin to the intertransverse interval, the channel having a diameter of less than about 4.0 cm.
Claim 3
Dependent Claim
17 words
The method of claim 1 further comprising delivering graft material through the channel to the intertransverse interval.
Claim 4
Dependent Claim
27 words
The method of claim 2 wherein the graft material is autograft, allograft, xenograft, a synthetic bone graft substitute, or a bone morphogenetic protein in a suitable carrier.
Claim 5
Dependent Claim
17 words
The method of claim 2 wherein the bone morphogenetic protein is a recombinant human bone morphogenetic protein.
Claim 6
Dependent Claim
10 words
The method of claim 4 wherein the carrier includes collagen.
Claim 7
Dependent Claim
14 words
The methods of claim 4 wherein the carrier is a biphasic calcium phosphate ceramic.
Claim 8
Dependent Claim
15 words
The method of claim 1 wherein the channel has a diameter of about 2.5 cm.
Claim 9
Dependent Claim
57 words
A minimally invasive method for approaching the intertransverse interval of a motion segment of a patient, comprising: developing the areolar plane between the iliocostalis lumborum muscle from the anterior leaf of the thoracolumbar fascia to create a channel from the patient's skin to the intertransverse interval, the channel having a diameter of less than about 4.0 cm.
Claim 10
Dependent Claim
57 words
A minimally invasive method for approaching the intertransverse interval of a motion segment of a patient, comprising: developing the areolar plane between the iliocostalis lumborum muscle from the anterior leaf of the thoracolumbar fascia to create a channel from the patient's skin to the intertransverse interval, the channel having a diameter of less than about 4.0 cm.
Claim 11
Dependent Claim
13 words
The method of claim 8, wherein the channel is developed by digital dissection.
Claim 12
Dependent Claim
31 words
The method of claim 8, further comprising: dissecting the longissimus thoracis muscle from its attachments to the thoracolumbar fascia, the transverse processes and the intertransverse membrane to expose the transverse processes.
Claim 13
Dependent Claim
20 words
The method of claim 10 further comprising inserting a device into the channel and retracting the iliocostalis and longissimus muscles.
Claim 14
Dependent Claim
15 words
The method of claim 10 further comprising inserting a cannula into the channel for visualization.
Claim 15
Dependent Claim
14 words
The method of claim 10, further comprising establishing an accessory portal intersecting the channel.
Claim 16
Dependent Claim
17 words
The method of claim 8 further comprising delivering graft material through the channel to the intertransverse interval.
References Cited (Backward Citations)
US3964480A
Cited
US4545374A
Cited
US4573448A
Cited
US5772661A
Cited
US5445639A
Cited
US5201729A
Cited
US5374269A
Cited
US5334194A
Cited
US5158543A
Cited
US5195541A
Cited
US5395317A
Cited
US5330331A
Cited
US5242444A
Cited
US5357983A
Cited
US5171279A
Cited
US5624446A
Cited
US5489307A
Cited
US5439464A
Cited
US5782832A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-03-22 | 2002-09-21 | 2003-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-03-22 | 2006-09-21 | 2007-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-03-22 | 2010-09-21 | 2011-03-23 | $7700.00 | Window Closed / Lapsed |