Spinal Implant Insertion Instrument with Rotating Jaw Mechanism
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Solution Overview
Problem
Current methods for inserting spinal implants require multiple instruments, which can complicate the surgical procedure and increase the risk of error or inefficiency.
Innovation Solution
A single surgical instrument with an elongate hollow shank and a gripping head featuring a movable jaw operated by a rotatable drive shaft, allowing for both gripping and releasing of the implant using a control knob that transitions between locked and unlocked positions to facilitate precise implant placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple instruments are used for inserting spinal implants, then the implant can be delivered to the final location, but the surgical procedure becomes complicated and efficiency decreases
Solution Approach 1:
The patent combines multiple functions (holding, delivering, and securing spinal implants) into a single integrated instrument. The holder includes a body with a holding chamber, a plunger mechanism for pushing the implant, and a locking mechanism with a key instrument, all integrated into one device that performs tasks previously requiring separate instruments.
Solution Approach 2:
The holder is designed as a multi-functional instrument that can hold the implant, deliver it to the target location, and secure it in place. The same device serves as both the delivery system and the securing mechanism, eliminating the need for specialized separate instruments for each function.
2Reliability
If multiple instruments are used for inserting spinal implants, then the implant delivery function is achieved, but the risk of error increases
Solution Approach 1:
By integrating the holding chamber, plunger mechanism, and locking system into one instrument, the patent reduces the number of instrument transitions and handoffs during surgery, thereby minimizing opportunities for errors. The integrated design ensures that the same device that holds the implant is also responsible for its precise delivery and secure placement.
3Device complexity
If a single instrument is used for inserting spinal implants, then procedural complexity is reduced, but the instrument must perform multiple functions
Solution Approach 1:
The holder is explicitly designed as a universal instrument that performs multiple functions: the holding chamber secures the implant, the plunger mechanism delivers it to the target site, and the locking mechanism with key instrument secures it in place. This multi-functional design allows one instrument to replace several specialized tools.
Solution Approach 2:
The single instrument is divided into functional segments (holding chamber, plunger, locking mechanism) that work together cooperatively. Each segment performs a specific task, but all are integrated into one device, allowing the instrument to be adaptable to multiple functions while maintaining operational simplicity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient and precise insertion of spinal implants using a single instrument, reducing procedural complexity and improving surgical accuracy by allowing secure grip and controlled release of the implant.
Implementation Method 1
The flexible coupling transmits torque between the first and second end portions. Additionally, the flexible coupling allows relative rotational displacement between the first and second end portions when the movable jaw grips an implant.
Data Source
AI summary
A device for inserting implants comprises an elongate, hollow shank with a gripping head at one end to grip and hold an implant. The gripping head includes a movable jaw operatively connected to a drive shaft such that rotation of the drive shaft causes the movable jaw to move. The drive shaft may include a gear that meshes with integrally formed teeth on the movable jaw. The drive shaft is axially movable between locked and unlocked positions.