Positioning device
The alignment sight with a second indicator structure facilitates precise alignment of intramedullary nails by displaying orthogonal inclinations in X-ray images, addressing misalignment issues and reducing treatment time and radiation exposure.
JP7881876B2Active Publication Date: 2026-06-30I T S
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- I T S
- Filing Date
- 2022-10-24
- Publication Date
- 2026-06-30
AI Technical Summary
Technical Problem
Correct positioning of intramedullary nails within the femur and guiding a guidewire to the appropriate depth of the femoral head is challenging due to limited X-ray imaging resolution, leading to prolonged treatment times and potential bone damage from misalignment.
Method used
The alignment sight includes a second indicator structure that displays the orthogonal inclination of the aiming line relative to the target axis in an X-ray image, allowing for easy alignment without requiring physical adjustments based on X-ray images.
Benefits of technology
This solution reduces treatment time and X-ray exposure by enabling quick and accurate alignment of the target axis, minimizing the risk of bone damage during implant procedures.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure 0007881876000001 
Figure 0007881876000002 
Figure 0007881876000003
Abstract
The present invention relates to a positioning device (1) for positioning and / or fixing a bone implant, in particular an intramedullary nail (2), comprising a curved handle (3) having a target guide (4) defining a target axis (Z) for guiding a bone drilling tool (5), the curved handle having a connecting element (6) for removably connecting the bone implant to the curved handle (3), and an alignment sight (7), the alignment sight having a first indicator structure (11) for indicating the trajectory of the target axis (Z) along a target sight (S2) located in a first alignment plane formed by the target axis (Z) and the first indicator structure (11) in a second X-ray image of the alignment sight (7). To provide optimal maneuverability, the alignment sight has a second indicator structure (12) that indicates an orthogonal tilt of the line of sight (S1) from the first alignment plane along the line of sight (S1) that deviates from the target line of sight (S2) in a first X-ray image of the alignment sight (7). The present invention further relates to a method for treating a bone fracture.
Need to check novelty before this filing date? Find Prior Art