Surgical Cannula Stabilization via Ball-and-Socket Locking Mechanism
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Solution Overview
Problem
Conventional kyphoplasty procedures face challenges in stabilizing the cannula during the delivery of inflatable bone tamps or bone void fillers, often requiring additional assistance due to lack of soft tissue or bony anatomy to maintain proper trajectory, leading to difficulties in accurately positioning the cannula for effective treatment of bone defects.
Innovation Solution
A surgical system featuring a device with a ball and socket configuration, including a pivoting member with grooves and a locking element, allows for the cannula to be fixed at a selected trajectory, enabling stable positioning without the need for additional assistance, using a cap to engage the collet and secure the cannula in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cannula is held manually by a physician or assistant, then the cannula can be positioned at the desired trajectory, but additional assistance is required and the cannula may become unstable during delivery
Solution Approach 1:
The device enables self-stabilization of the cannula through its own structure. The ball and socket mechanism with locking element allows the cannula to maintain its trajectory independently without requiring manual holding by additional personnel. The system serves itself by incorporating the stabilization function into the delivery device rather than relying on external assistance.
2Measurement precision
If the cannula is held manually to maintain trajectory, then positioning can be achieved, but the procedure requires extra hands and reduces efficiency
Solution Approach 1:
The delivery device incorporates self-stabilization functionality through the ball and socket mechanism with locking element, allowing the cannula to maintain its trajectory independently. This eliminates the need for additional personnel to hold the cannula, thereby improving procedural efficiency while maintaining accurate positioning.
3Reliability
If the cannula is held manually without adequate soft tissue or bony anatomy, then positioning is attempted, but the cannula becomes difficult to stabilize
Solution Approach 1:
The device provides self-stabilization through its mechanical ball and socket structure with locking element, which maintains cannula trajectory independently of surrounding anatomical structures. This overcomes the challenge of stabilizing the cannula in areas with little soft tissue or bony anatomy by relying on the device's own structural mechanisms rather than anatomical landmarks.
Data Source
AI summary
A device includes a first member extending along an axis and including an inner surface defining a cavity. The inner surface defines a locking element extending into the cavity. First and second openings extend the first member and are in communication with the cavity. A pivoting member is movably disposed in the cavity and includes an inner surface defining a passageway. An outer surface of the pivoting member includes grooves configured to engage the locking element. A second member is disposed within the passageway. The pivoting member is movable between a first orientation such that the locking element is spaced apart from the grooves and the pivoting member is rotatable to a selected trajectory relative to the axis and a second orientation such that the locking element engages one of the grooves and the second member is fixed in the selected trajectory.