Title:
GEARED CAM EXPANDABLE INTERBODY IMPLANT AND IMPLANTING METHOD
Document Type and Number:
Japanese Patent JP2021062254
Kind Code:
A
Abstract:
To provide an expandable spinal implant which obviates shortcomings of a related art which lacks a reliable capability for fine adjustment.SOLUTION: A geared cam expandable spinal implant 10 is provided. Rotational motion of a rotating portion 78 is translated into linear motion of a yoke cam, and the motion moves geared cams at a distal end of the implant to mate with and causes them to walk along teeth of corresponding racks. The walking of the gear cam teeth along the rack teeth creates a regular rate of implant expansion, reduces initial excessive expansion force applied to the implant, and provides fine adjustment of the expansion rate and force.SELECTED DRAWING: Figure 1
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Inventors:
JONATHAN M DEWEY
WILLIAM D ARMSTRONG
WILLIAM D ARMSTRONG
Application Number:
JP2021004799A
Publication Date:
April 22, 2021
Filing Date:
January 15, 2021
Export Citation:
Assignee:
WARSAW ORTHOPEDIC INC
International Classes:
A61F2/44; A61B17/70
Domestic Patent References:
| JP6827051B2 | 2021-02-10 |
Attorney, Agent or Firm:
Osamu Yamamoto
Toru Miyamae
Shigeo Takeuchi
Toru Miyamae
Shigeo Takeuchi
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