Patent US6162170A successfully refreshed from Google Patents.
US6162170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Devices and methods for percutaneous surgery
Assignee: SDGI Holdings Inc
•
Filing: 1999-01-20
•
Granted: 2000-12-19
•
Expires: 2019-01-20
Abstract
Abstract A method for percutaneous surgery on the spine of a patient under direct visualization is performed through a single cannula having a predetermined length. The length is determined by measuring a distance from the lamina of a spinal vertebra to the skin of the patient, determining a first portion of the length to be less than the measured distance, and determining a second portion of the length to be about one fourth (1/4) the length of the first portion. The first portion is the length of the cannula to be introduced into the patient and the second portion extends external to the patient. This length is preferably 5.5 to 7.0 times greater than the transverse dimension of the cannula. Such dimensions for the cannula permits the longitudinal axis of a tool to be angled between 5 degrees and 8 degrees with respect to the longitudinal axis of the cannula.
Inventors
- 👤 Kevin Thomas Foley
- 👤 Maurice Mell Smith
- 👤 John B. Clayton
- 👤 Joseph Moctezuma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:35
CPC Classifications
A; A61; A61M; A61M29/00; A61B; A61B17/00; A61B17/34; A61B17/3417; A61B17/3421; A61B17/16; A61B17/1662; A61B17/1671; A61B17/00234; A61B2017/00238; A61B2017/00261; A61B2017/00292; A61B2017/00296; A61B2017/0046; A61B2017/00469; A61B2017/00477; A61B2017/3445; A61B2017/347; A61B90/00; A61B90/06; A61B2090/062; A61B90/30; A61B2090/306; A61B90/36; A61B90/361; A61B2090/3614; A61B90/37; A61B2090/373; A61B90/50
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
112 words
A method for manufacturing an apparatus for use in percutaneous surgery on the spine of a patient, comprising the steps of: (a) measuring a distance from the lamina of a spinal vertebra to the skin of the patient; (b) determining a first portion of a length of a cannula to be less than the distance measured in step (a), the first portion for introduction into the patient; (c) determining a second portion of the length of the cannula to be about one-fourth (1/4) of the length of the first portion, the second portion external to the patient; and (d) providing the cannula having the length determined according to steps (b) and (c).
Claim 2
Independent Claim
112 words
A method for manufacturing an apparatus for use in percutaneous surgery on the spine of a patient, comprising the steps of: (a) measuring a distance from the lamina of a spinal vertebra to the skin of the patient; (b) determining a first portion of a length of a cannula to be less than the distance measured in step (a), the first portion for introduction into the patient; (c) determining a second portion of the length of the cannula to be about one-fourth (1/4) of the length of the first portion, the second portion external to the patient; and (d) providing the cannula having the length determined according to steps (b) and (c).
Claim 3
Dependent Claim
19 words
The method according to claim 1, wherein the cannula includes a circular cross-section along the length of the cannula.
Claim 4
Dependent Claim
19 words
The method according to claim 1, wherein the length of the second portion is less than about 30 millimeters.
Claim 5
Dependent Claim
59 words
The method according to claim 1, further comprising: (e) providing a tool having an elongated shaft and a longitudinal axis extending therethrough, wherein the cannula provided in step (d) includes a working channel that permits the longitudinal axis of the tool to be angled between 5 degrees and 8 degrees with respect to a longitudinal axis of the cannula.
Claim 6
Dependent Claim
39 words
The method according to claim 1, wherein the cannula has a dimension transverse to its length, and further comprising: (e) determining the length of the cannula to also be between 5.5 to 7.0 times greater than the transverse dimension.
Claim 7
Independent Claim
104 words
A method for performing percutaneous surgery on the spine of a patient, comprising the steps of: (a) measuring a distance from a spinal body to the skin of the patient; (b) determining a first portion of a length of a cannula to be less than the distance measured in step (a), the first portion for introduction into the patient; (c) determining a second portion of the length of the cannula to be about one-fourth (1/4) of the length of the first portion, the second portion external to the patient; and (d) providing the cannula having the length determined according to steps (b) and (c).
Claim 8
Independent Claim
104 words
A method for performing percutaneous surgery on the spine of a patient, comprising the steps of: (a) measuring a distance from a spinal body to the skin of the patient; (b) determining a first portion of a length of a cannula to be less than the distance measured in step (a), the first portion for introduction into the patient; (c) determining a second portion of the length of the cannula to be about one-fourth (1/4) of the length of the first portion, the second portion external to the patient; and (d) providing the cannula having the length determined according to steps (b) and (c).
Claim 9
Dependent Claim
19 words
The method according to claim 6, wherein the cannula includes a circular cross-section along the length of the cannula.
Claim 10
Dependent Claim
19 words
The method according to claim 6, wherein the length of the second portion is less than about 30 millimeters.
Claim 11
Dependent Claim
59 words
The method according to claim 6, further comprising: (e) providing a tool having an elongated shaft and a longitudinal axis extending therethrough, wherein the cannula provided in step (d) includes a working channel permitting the longitudinal axis of the tool shaft to be angled between 5 degrees and 8 degrees with respect to a longitudinal axis of the cannula.
Claim 12
Dependent Claim
38 words
The method according to claim 6, wherein the cannula has a dimension transverse to its length, and further comprising determining the length of the cannula to also be between 5.5 to 7.0 times greater than the transverse dimension.
Claim 13
Dependent Claim
19 words
The method according to claim 6, wherein step (a) includes measuring the distance from the lamina to the skin.
References Cited (Backward Citations)
US2235979A
Cited
DE1566116A1
Cited
US3486505A
Cited
DE2222979A1
Cited
US3941127A
Cited
US3964480A
Cited
US4461281A
Cited
US4368738A
Cited
US4875897A
Cited
US4545374A
Cited
US4498902A
Cited
US4573448A
Cited
US4762120A
Cited
US4700694A
Cited
US4610242A
Cited
US4736738A
Cited
US4678459A
Cited
US4586491A
Cited
US4899729A
Cited
US4638799A
Cited
US4655216A
Cited
US4750475A
Cited
US4674501A
Cited
US4750487A
Cited
US4905082A
Cited
US4807593A
Cited
EP0303824A2
Cited
US5534009A
Cited
US5772661A
Cited
US5004457A
Cited
US4972827A
Cited
DE3936811A1
Cited
US5135525A
Cited
GB2234906A
Cited
US5201729A
Cited
US5125396A
Cited
US5158543A
Cited
US5071410A
Cited
WO1992019146A1
Cited
EP0528562A2
Cited
US5472426A
Cited
US5195541A
Cited
US5395317A
Cited
US5242444A
Cited
US5437637A
Cited
WO1993014801A1
Cited
WO1993015647A1
Cited
US5357983A
Cited
US5171279A
Cited
US5396880A
Cited
US5354302A
Cited
US5667478A
Cited
US5562696A
Cited
US5380291A
Cited
US5376076A
Cited
US5334150A
Cited
US5551947A
Cited
US5735792A
Cited
US5512034A
Cited
FR2701379A1
Cited
US5439464A
Cited
US5643174A
Cited
US5441041A
Cited
US5392766A
Cited
US5957832A
Cited
FR2714285A1
Cited
WO1995022285A1
Cited
US5445142A
Cited
US5667472A
Cited
US5667473A
Cited
US5439449A
Cited
US5569205A
Cited
US5746720A
Cited
US5954635A
Cited
US5830188A
Cited
US5807237A
Cited
US5846182A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-12-19 | 2004-06-19 | 2004-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-12-19 | 2008-06-19 | 2008-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-12-19 | 2012-06-19 | 2012-12-19 | $7700.00 | Window Closed / Lapsed |