US4944738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical laser backstop instrument
Assignee: Individual
•
Filing: 1989-03-22
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Granted: 1990-07-31
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Expires: 2009-03-22
Abstract
Abstract A surgical laser backstop instrument comprising a rod, a backstop pivotally mounted to one end of the rod, and a backstop adjustment mechanism mounted to the other end of the rod. The backstop is comprised of a non-reflective material. The backstop adjustment mechanism controls the movement of the backstop. The backstop is a flat section of titanium-coated material and is movable between a position longitudinally aligned with the axis of the rod and a position transverse to the axis of the rod. The backstop adjustment mechanism comprises a body connected to the other end of the rod, a line fastened at one end to the backstop and extending through the rod, and a movement actuator mechanism connected to the other end of the line for controlling the pivotal movement of the backstop. This movement actuator mechanism includes a knob rotatably mounted to the body, a rack assembly placed within the body and connected to the end of the line, and a pinion gear engaging the rack assembly and connected to the knob such that rotational movement of the knob causes movement of the rack assembly.
Inventors
- 👤 Michael A. Rodriguez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:20
CPC Classifications
A; A61; A61B; A61B90/00; A61B90/04; A61B2090/049; A61B2217/00; A61B2217/002; A61B2217/005; A61B2218/00; A61B2218/001; A61B2218/007; A61B2218/008; A61M; A61M2202/00; A61M2202/02
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
52 words
A surgical laser backstop instrument comprising: a rod having a non-reflective surface; a backstop pivotally connected to one end of said rod, said backstop comprised of a non-reflecting material; and backstop adjustment means mounted to the other end of said rod, said backstop adjustment means for controlling the movement of said backstop.
Claim 2
Dependent Claim
52 words
A surgical laser backstop instrument comprising: a rod having a non-reflective surface; a backstop pivotally connected to one end of said rod, said backstop comprised of a non-reflecting material; and backstop adjustment means mounted to the other end of said rod, said backstop adjustment means for controlling the movement of said backstop.
Claim 3
Dependent Claim
13 words
The instrument of claim 1, said surface being a coating of non-reflective material.
Claim 4
Dependent Claim
11 words
The instrument of claim 2, said rod coated with titanium material.
Claim 5
Dependent Claim
15 words
The instrument of claim 2, said rod having a length of greater than twelve inches.
Claim 6
Dependent Claim
17 words
The instrument of claim 2, said rod having a diameter of thirteen/sixty-fourths of an inch or greater.
Claim 7
Dependent Claim
14 words
The instrument of claim 2, said rod having an evacuation bore extending longitudinally therethrough.
Claim 8
Dependent Claim
37 words
The instrument of claim 6, said surgical laser backstop instrument further comprising: smoke evacuation means connected to one end of said evacuation bore opposite said backstop, said smoke evacuation means for drawing smoke through said evacuation bore.
Claim 9
Dependent Claim
27 words
The instrument of claim 1, said backstop comprising a flat section of titanium-coated material having a width equal to or less than the diameter of said rod.
Claim 10
Dependent Claim
40 words
The instrument of claim 8, said backstop movable between a position in which said backstop is align with the longitudinal axis of said rod and a position in which the backstop is transverse to the longitudinal axis of said rod.
Claim 11
Dependent Claim
24 words
The instrument of claim 9, said backstop extending outwardly for a distance greater than seven-tenths of an inch from the end of said rod.
Claim 12
Dependent Claim
62 words
The instrument of claim 1, said backstop adjustment means comprising: a body connected to said other end of said rod; a line fastened at one end to said backstop and extending through said rod; and movement actuator means connected to the other end of said line, said movement actuator means connected to said body for controlling the pivotal movement of said backstop.
Claim 13
Dependent Claim
29 words
The instrument of claim 11, said body comprising a barrel having an aperture extending at least partially therethrough, said barrel fixedly attached to the other end of said rod.
Claim 14
Dependent Claim
37 words
The instrument of claim 11, said line comprising a wire connected at one end to said movement actuator means and at the other end to said backstop, said wire extending through a longitudinal bore in said rod.
Claim 15
Dependent Claim
19 words
The instrument of claim 13, said line comprising a pair of wires extending through parallel bores in said rod.
Claim 16
Dependent Claim
84 words
The instrument of claim 11, said movement actuator means comprising: a knob rotatably mounted to said body, said knob for manually controlling the positioning of said backstop; a rack assembly placed within said body and connected to the other end of said line; and a pinion gear engaging said rack assembly and connected to said knob such that rotational movement of said knob causes a corresponding rotation of said pinion gear, said rack assembly movable relative to the rotational movement of said pinion gear.
Claim 17
Dependent Claim
81 words
The instrument of claim 11, said surgical laser backstop instrument further comprising: smoke evacuation means connected to said body, said smoke evacuation means for drawing smoke from adjacent said backstop, said body having an aperture extending therethrough, said rod having an evacuation bore with an opening adjacent the pivotal connection of said backstop to said rod, said aperture of said body communicating with said evacuation bore, said smoke evacuation means including a vacuum connected external of said surgical laser backstop instrument.
Claim 18
Dependent Claim
60 words
A surgical laser backstop instrument comprising: a rod comprised of an optically non-transmissive material; a backstop pivotally mounted to one end of said rod, said backstop comprised of a laser non-reflective material; and backstop adjustment means mounted at the other end of said rod, said backstop adjustment means for controlling the pivotal movement of said backstop relative to said rod.
Claim 19
Dependent Claim
60 words
A surgical laser backstop instrument comprising: a rod comprised of an optically non-transmissive material; a backstop pivotally mounted to one end of said rod, said backstop comprised of a laser non-reflective material; and backstop adjustment means mounted at the other end of said rod, said backstop adjustment means for controlling the pivotal movement of said backstop relative to said rod.
Claim 20
Dependent Claim
88 words
The instrument of claim 17, said instrument further comprising: smoke evacuation means extending through said rod, said smoke evacuation means for the removal of smoke at an area adjacent said backstop, said smoke evacuation means comprising: a bore extending through the interior of said rod, said bore opening at the end of said rod adjacent said pivotal connection of said backstop with said rod; and a vacuum pump communicating with said bore at the other end of said rod, said vacuum pump for drawing smoke through said bore.
References Cited (Backward Citations)
US1283189A
Cited
US3865113A
Cited
US3982541A
Cited
US4249533A
Cited
US4178920A
Cited
US4313431A
Cited
DE3209444A1
Cited
US4492230A
Cited
EP0070459A2
Cited
US4646734A
Cited
US4638800A
Cited
US4648892A
Cited
US4815461A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-07-30 | 1994-01-29 | 1994-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-30 | 1998-01-29 | 1998-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-30 | 2002-01-29 | 2002-07-31 | $7700.00 | Window Closed / Lapsed |