Surgical microscope system

• US 8,270,073 B2
• Filed: 03/21/2008
• Issued: 09/18/2012
• Est. Priority Date: 03/23/2007
• Status: Active Grant

• Current Assignee: Mitaka Kohki Co., Ltd.
• Original Assignee: Mitaka Kohki Co., Ltd.
• Inventors: Nakamura, Katsushige, Doi, Masao, Nakamura, Masakazu
• Primary Examiner(s): FONT, FRANK G
• Application Number:
  US12/052,897
• Publication Number:
  US 20080231948A1
• Time in Patent Office: 1,642 Days
• Field of Search: 359/368, 359/384
• US Class Current: 359/384
• CPC Class Codes: A61B 2090/504 with a counterweight
• CPC Class Codes: A61B 2090/506 using a parallelogram linkage, e.g. panthograph
• CPC Class Codes: A61B 90/20 Surgical microscopes characterised by non-optical aspects
• CPC Class Codes: A61B 90/36 Image-producing devices or illumination devices not otherwise provided for
• CPC Class Codes: A61B 90/37 Surgical systems with images on a monitor during operation
• CPC Class Codes: A61B 90/50 Supports for surgical instruments, e.g. articulated arms

Abstract

A surgical microscope system is disclosed. The surgical microscope is comprised of a stand which is comprised of a movable base and a support capable of free motion with keeping a particular orientation relative to the movable base; a stereoscopic surgical microscope linked with the support, which is comprised of a pair of first optical systems so as to provide a first stereoscopic magnified view; and a stereoscopic display device having a movable link with the stand, which is comprised of a display screen for displaying stereoscopic image taken by the first optical systems and a pair of second optical systems as to show the stereoscopic image as a second stereoscopic magnified view.

Claims

1. A surgical microscope system comprising:

a stand including a movable base and a support capable of free motion with keeping a particular orientation relative to the base;

a stereoscopic surgical microscope linked with the support, the microscope including a pair of first optical systems having a pair of eyepieces in direct optical contact with the microscope so as to provide a first stereoscopic magnified view;

a stereoscopic display device including a display screen configured to display a stereoscopic image taken by the first optical systems and a pair of second optical systems so as to show the stereoscopic image as a second stereoscopic magnified view; and

a subsidiary arm linked with the stand and the stereoscopic display device, the subsidiary arm enabling independent movement of the stereoscopic display device from the stereoscopic surgical microscope.

2. The surgical microscope system of claim 1, further comprising:

a camera optically coupled with the first optical systems and electronically coupled with the display screen so as to project the stereoscopic image onto the display screen.

3. The surgical microscope system of claim 2, wherein the camera includes a pair of imagers respectively optically coupled with the first optical systems to take the stereoscopic image.

4. The surgical microscope system of claim 3, wherein the display screen includes a pair of separate screens respectively electronically coupled with the imagers.

5. The surgical microscope system of claim 1, wherein the subsidiary arm is linked with the support of the stand and the stereoscopic display device.

6. The surgical microscope system of claim 1, wherein the subsidiary arm is linked with the base of the stand and the stereoscopic display device.

7. The surgical microscope system of claim 5, wherein the stand includes;

a parallel linkage including paired parallel first and second standing links and paired parallel upper and lower lying links, an intermediate portion of the first standing link being pivotally supported through a first pivot to a main body of the stand, the upper lying link having a joint shaft to pivotally link with the first standing link and being kept horizontal;

a supporting link extended from the upper lying link;

a tip link pivotally supported to the supporting link via a first tip link pivot at a distal end of the supporting link, the tip link supporting the microscope and the display device;

a crank member pivotally supported by the joint shaft, the crank member having a first crank pivot and a second crank pivot so dimensioned as to have a line formed of the first crank pivot and the joint shaft kept horizontal and have a line formed of the second crank pivot and the joint shaft kept vertical;

a standing sub-link pivoted on a second pivot formed on the main body and on the first crank pivot of the crank member, the standing sub-link having a length so as to have the first pivot, the first crank pivot, the second pivot and the joint shaft to form vertexes of a parallelogram;

a lying sub-link pivoted on the second crank pivot and pivoted on a tip link pivot of the tip link, the lying sub-link having a length so as to have the joint shaft, the first tip link pivot, the second tip link pivot and the second crank pivot to form vertexes of a parallelogram;

a counter weight provided below the parallel linkage mechanism to keep balance with a weight applied in a lowering direction of the parallel linkage mechanism about the first pivot whereby the free motion with keeping the particular orientation of the support relative to the movable base is enabled.

8. The surgical microscope system of claim 1, wherein the subsidiary arm has a plurality of arms pivotally supported.

9. The surgical microscope system of claim 1, wherein the subsidiary arm has a clutch to free and lock a swinging motion of the arms.