Extender, and surgical instrument system including the extender
The extender design simplifies assembly by using an outer member, movable inner members, and a reducer mechanism, enhancing the ease and efficiency of surgical screw implantation and spinal rod alignment.
JP2026109401APending Publication Date: 2026-07-01KYOCERA MEDICAL CORP
Patent Information
- Application Number
- JP2024224489
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2026-07-01
AI Technical Summary
Technical Problem
Existing extenders for surgical screws, such as those described in Patent Document 2, require a pair of inner parts and a push-in part, leading to increased complexity in assembly.
Method used
An extender design featuring an outer member, inner members that can move between restraining and releasing positions, and a movable member that engages with the inner members, allowing for radial detachment and assembly simplification, along with a reducer mechanism for spinal rod alignment and fixation.
Benefits of technology
Improves the ease of assembly and functionality of the extender, facilitating efficient implantation of surgical screws and spinal rod alignment during surgeries.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure 2026109401000001_ABST
Abstract
To improve the ease of assembly of the extender. [Solution] The extender 1 comprises an outer member 20, a plurality of inner members 40 located along the inner wall surface of the outer member 20 and movable between a first position that restrains the medical screw 50 to the outer member 20 and a second position that is closer to the outer base end 22 than the first position and where the restraint is released, and a movable member 60 that engages with the outer member 20 so as to be axially movable and engages with the inner base ends 42 of the plurality of inner members 40. Each inner member 40 has an external force receiving surface 42a that allows the inner base end 42 to bend radially when it receives an axial external force acting from the movable member 60 upon engagement with the movable member 60.
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Citation Information
Patent Citations
Systems and methods for spinal fixation
JP2011500267A
Extender, and surgical operation system
JP2023162097A