US5123403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction nerve root retractor
Assignee: Individual
•
Filing: 1991-07-10
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Granted: 1992-06-23
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Expires: 2011-07-10
Abstract
Abstract There is disclosed according to the invention a suction retractor for retraction of a nerve root during surgery, comprising a suction tube having an interior and exterior diameter, and a suction end and a base end, a retractor member having a tubular portion slidably positioned over the suction tube, said tubular portion having an interior diameter slightly larger than the exterior diameter of the suction tube such that the tubular portion is axially and rotatably slidable on the suction tube by manual pressure and yet sufficiently tight that it frictionally engages the suction tube and does not move except by said manual pressure, the retractor member having a spatula portion extending from said tubular portion axially toward and radially away from the suction end of the suction tube, the spatula portion adapted to permit the retraction of a nerve root during surgery.
Inventors
- 👤 Michael H. Lavyne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:50
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/84; Y; Y10; Y10S; Y10S604/00; Y10S604/902
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
174 words
A suction retractor adapted for retraction of a nerve root during surgery, comprising a suction tube having an interior and exterior diameter, and a suction end and a base end, a retractor member having a tubular portion slidably positioned over said suction tube, said tubular portion having a base end toward the base end of the suction tube and a remote end remote from the base end of the suction tube, and having an interior diameter slightly larger than the exterior diameter of the suction tube such that said tubular portion is axially and rotatably slidable on said suction tube by manual pressure and yet sufficiently tight that it frictionally engages said suction tube and does not move except by said manual pressure, said retractor member having a spatula portion extending from the remote end of said tubular portion axially away from the base end of the tubular portion and radially away from the suction end of the suction tube, said spatula portion adapted to permit the retraction of a nerve root during surgery.
Claim 2
Dependent Claim
174 words
A suction retractor adapted for retraction of a nerve root during surgery, comprising a suction tube having an interior and exterior diameter, and a suction end and a base end, a retractor member having a tubular portion slidably positioned over said suction tube, said tubular portion having a base end toward the base end of the suction tube and a remote end remote from the base end of the suction tube, and having an interior diameter slightly larger than the exterior diameter of the suction tube such that said tubular portion is axially and rotatably slidable on said suction tube by manual pressure and yet sufficiently tight that it frictionally engages said suction tube and does not move except by said manual pressure, said retractor member having a spatula portion extending from the remote end of said tubular portion axially away from the base end of the tubular portion and radially away from the suction end of the suction tube, said spatula portion adapted to permit the retraction of a nerve root during surgery.
Claim 3
Dependent Claim
79 words
A suction retractor according to claim 1, wherein said retractor member is comprised of a unitary metal tube with at least half of the metal tube's circumference cut away along a portion of the metal tube's length at an end of the metal tube toward the suction end of the suction tube, and wherein the remaining metal tube's circumference along said portion of said metal tube's length is at least partially flattened and shaped to form said spatula portion.
Claim 4
Dependent Claim
19 words
A suction retractor according to claim 2, wherein said spatula portion is curved radially away from the suction tube.
Claim 5
Dependent Claim
16 words
A suction retractor according to claim 2, wherein the spatula portion is approximately one centimeter long.
Claim 6
Dependent Claim
43 words
A suction retractor according to claim 2, wherein said retractor member includes a slot cut into said tubular portion, said slot adapted to be crimped or opened so as to adjust the force with which the tubular portion frictionally engages the suction tube.
Claim 7
Dependent Claim
19 words
A suction retractor according to claim 1, wherein said spatula portion is curved radially away from the suction tube.
Claim 8
Dependent Claim
16 words
A suction retractor according t claim 1, wherein the spatula portion is approximately one centimeter long.
Claim 9
Dependent Claim
30 words
A suction retractor according to claim 1, wherein the suction tube is substantially straight at the suction end, and has a bend between the suction end and the base end.
Claim 10
Dependent Claim
32 words
A suction retractor according to claim 8, wherein the angle of said bend is between about 25° and 50° relative to a longitudinal axis of the base end of the suction tube.
Claim 11
Dependent Claim
16 words
A suction retractor according to claim 8, wherein the angle of said bend is about 40°.
Claim 12
Dependent Claim
43 words
A suction retractor according to claim 1, wherein said retractor member includes a slot cut into said tubular portion, said slot adapted to be crimped or opened so as to adjust the force with which the tubular portion frictionally engages the suction tube.
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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) | 1995-06-23 | 1995-12-23 | 1996-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-23 | 1999-12-23 | 2000-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-23 | 2003-12-23 | 2004-06-23 | $7700.00 | Window Closed / Lapsed |