Patent US6081336A successfully refreshed from Google Patents.
US6081336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microscope calibrator
Assignee: Mako Surgical Corp
•
Filing: 1997-09-26
•
Granted: 2000-06-27
•
Expires: 2017-09-26
Abstract
Abstract A microscope calibrator includes a housing supporting a series of focusing targets each situated at a predetermined distance from one another. Attributes of the microscope are determined by focusing the microscope on one ore more of the focusing targetrs and determining a location of the microscope with respect to the focusing targets focused upon. The position of the focusing targets are determinable by virtue of a local reference frame target attached to the microscope calibrator or by using a tracked probe to communicate the location of each point focused upon by the microscope on each of the focusing targets.
Inventors
- 👤 Dale A. Messner
- 👤 Ruhul Quddus
- 👤 John D. Schellenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:43
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/0004; G02B21/0012; A; A61; A61B; A61B34/00; A61B34/20; A61B17/00; A61B2017/00681; A61B2017/00725; A61B2034/2046; A61B2034/2055; A61B2034/2068; A61B90/00; A61B90/20
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
79 words
An apparatus comprising: a first focusing target; a second focusing target disposed in a spaced relationship to the first focusing target; a support adapted to hold the focusing target within the field of view of a surgical microscope, wherein the support includes a member defining an aperture having a longitudinal axis and the first focusing target and second focusing target are situated along the longitudinal axis; and means for communicating the location of the focusing target to a processor.
Claim 2
Independent Claim
79 words
An apparatus comprising: a first focusing target; a second focusing target disposed in a spaced relationship to the first focusing target; a support adapted to hold the focusing target within the field of view of a surgical microscope, wherein the support includes a member defining an aperture having a longitudinal axis and the first focusing target and second focusing target are situated along the longitudinal axis; and means for communicating the location of the focusing target to a processor.
Claim 3
Dependent Claim
22 words
The apparatus of claim 1 further including a third focusing target disposed in spaced relation to the first and second focusing targets.
Claim 4
Dependent Claim
30 words
The apparatus of claim 1 wherein the member is supported for pivotable movement about a pivot axis and the pivot axis is perpendicular to the longitudinal axis of the member.
Claim 5
Dependent Claim
16 words
The apparatus of claim 3 wherein the first focusing target is situated on the pivot axis.
Claim 6
Independent Claim
62 words
A method of calibrating a surgical microscope, the method comprising the steps of: focusing the surgical microscope on a focusing target; communicating the location of the focusing target to a processor; communicating the location of the surgical microscope to the processor; and determining at least one attribute of the surgical microscope using the communicated locations of the focusing target and surgical microscope.
Claim 7
Independent Claim
62 words
A method of calibrating a surgical microscope, the method comprising the steps of: focusing the surgical microscope on a focusing target; communicating the location of the focusing target to a processor; communicating the location of the surgical microscope to the processor; and determining at least one attribute of the surgical microscope using the communicated locations of the focusing target and surgical microscope.
Claim 8
Dependent Claim
29 words
The method of claim 5 further including the steps of focusing the microscope on a second focusing target and communicating the location of the second target to the processor.
Claim 9
Dependent Claim
31 words
The method of claim 5 further including the step of storing data in a memory correlating the location of the focusing target to a position indicator associated with the focusing target.
Claim 10
Dependent Claim
33 words
The method of claim 1 further including the steps of accessing a memory mounted proximate to the focusing target, the memory containing the stored data and providing the stored data to the processor.
Claim 11
Dependent Claim
33 words
The method of claim 7 wherein the step of communicating further includes the step of establishing a localized reference system for sensing the location of the position indicator associated with the focusing target.
References Cited (Backward Citations)
US4055376A
Cited
US4609814A
Cited
US4722056A
Cited
US4836667A
Cited
US4836778A
Cited
JPH01102306A
Cited
US4968147A
Cited
US5622170A
Cited
US5383454A
Cited
US5383454B1
Cited
US5662111A
Cited
US5513005A
Cited
US5517990A
Cited
US5309913A
Cited
US5305091A
Cited
WO1996007144A1
Cited
WO1996011624A2
Cited
US5694212A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-06-27 | 2003-12-27 | 2004-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-06-27 | 2007-12-27 | 2008-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-06-27 | 2011-12-27 | 2012-06-27 | $7700.00 | Window Closed / Lapsed |