Rotatable Spinal Bone Fastener Receiver Angulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current spinal implant systems for treating disorders such as scoliosis and degenerative disc disease often require complex procedures and hardware to achieve proper alignment and stability, which can be invasive and costly, and lack flexibility in angulation and minimally invasive options.
Innovation Solution
A spinal implant system featuring a bone fastener with a movable receiver and anchor configuration, allowing for controlled distraction, lordosis correction, and transverse angulation, utilizing a tool to adjust the receiver's orientation relative to the bone anchor, enabling minimally invasive surgical approaches and flexible angulation without bending the spinal rod.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional spinal implant systems are used to achieve proper alignment and stability, then spinal disorders can be treated, but the procedures become complex and invasive
Solution Approach 1:
The bone fastener is divided into separate components: a receiver that attaches to the spinal rod and a bone anchor that engages the vertebra. These can be implanted separately and assembled in situ, simplifying the overall procedure while maintaining stability and alignment capabilities.
Solution Approach 2:
The receiver is designed to be rotatable relative to the bone anchor, allowing dynamic adjustment of angulation during surgery. This enables proper alignment to be achieved through simple rotation rather than complex pre-bending of rods or invasive procedures.
2Reliability
If traditional spinal implant systems are used to achieve proper alignment, then spinal disorders can be treated, but the procedures become invasive
Solution Approach 1:
The bone anchor and receiver are designed as pre-configured components that can be attached to the spinal rod before insertion or assembled quickly in situ. This preliminary preparation reduces surgical time and invasiveness while ensuring proper alignment is maintained.
Solution Approach 2:
The rotatable receiver allows alignment adjustments to be made after implantation through simple rotation, eliminating the need for invasive pre-bending procedures or complex intraoperative adjustments.
3Reliability
If traditional spinal implant systems are used to achieve stability, then spinal disorders can be treated, but flexibility in angulation is limited
Solution Approach 1:
The receiver is designed with rotational capability relative to the bone anchor, providing dynamic adjustment of angulation in multiple planes. This maintains stability through secure mechanical connection while allowing flexible positioning to match patient-specific anatomical requirements.
Solution Approach 2:
The rotation mechanism adds an angular dimension to the connection between the spinal rod and bone anchor, transforming a fixed-position fastener into one that can be oriented in multiple directions while maintaining structural stability.
4Reliability
If traditional spinal implant systems are used to achieve proper alignment, then spinal disorders can be treated, but costly hardware is required
Solution Approach 1:
Dividing the fastener into separate receiver and bone anchor components allows for simpler, more cost-effective manufacturing of each individual part while maintaining overall alignment capabilities through their modular assembly.
Solution Approach 2:
The rotatable receiver design achieves complex alignment functionality through a simple rotational mechanism rather than requiring expensive pre-bent rods or complex multi-component systems, reducing overall hardware cost while maintaining alignment precision.
Data Source
AI summary
An instrument includes a shaft and a mating element that extends from the shaft. The mating element is configured to engage a mating element of a bone fastener to move a receiver of the bone fastener relative to a bone anchor of the bone fastener. Implants, systems, constructs, instruments and methods are disclosed.