Medical Device Handle Rotating Collar Actuation
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Solution Overview
Problem
Current cardiovascular treatments are often invasive, causing significant discomfort, pain, and lengthy recovery times for patients, with a need for less invasive alternatives that can efficiently deliver and deploy medical devices like replacement heart valves.
Innovation Solution
A medical device handle with a rotatable collar and control knob system that allows for percutaneous delivery and deployment of medical implants, featuring an elongated handle housing, axial translation mechanism, and a release ring to actuate the implant between delivery, deployed, and released configurations, facilitating less invasive procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional cardiovascular treatments are used, then medical devices can be delivered and deployed, but patient discomfort, pain, and recovery time significantly increase
Solution Approach 1:
The patent replaces traditional open-chest surgical access with a percutaneous mechanical delivery system. The implant is delivered through a catheter-based approach using a handle assembly with rotatable collar and control knobs that mechanically actuate the implant from delivery to deployed configuration through rotational and axial movements, eliminating the need for sternotomy or thoracotomy and thereby reducing patient discomfort and pain
Solution Approach 2:
The patent introduces a handle assembly as an intermediary device between the operator and the implant. This intermediary mechanism includes a rotatable collar, control knobs, and axial translation mechanisms that translate operator inputs into precise implant actuation forces and movements, enabling complex implant deployment through simple external manipulations while maintaining percutaneous access
2Duration of action of stationary object
If traditional cardiovascular treatments are used, then medical devices can be deployed, but recovery time significantly increases
Solution Approach 1:
The percutaneous delivery system replaces invasive surgical mechanical access with a minimally invasive catheter-based mechanical delivery approach. The handle assembly mechanically actuates the implant through rotational and axial movements that translate through the catheter to deploy the implant in situ, avoiding large incisions and muscle cutting that would extend recovery time
3Ease of operation
If a rotatable collar and control knob system is used, then precise actuation of the implant is achieved, but the handle structure becomes more complex
Solution Approach 1:
The patent merges multiple control functions into an integrated handle assembly where the rotatable collar and control knobs are combined with axial translation mechanisms and slot systems. The collar rotates to drive axial movement of the implant, while control knobs provide additional actuation control, with all components merged into a single cohesive unit that operates through coordinated rotational and axial motions
Solution Approach 2:
The patent converts rotational motion in the handle assembly into axial linear motion for implant actuation. The rotatable collar rotates about a longitudinal axis, and this rotational movement is translated through slot mechanisms and engagement features into axial translation of the implant along the catheter, adding a dimensional transformation capability that enables precise control
4Object-affected harmful factors
If percutaneous delivery is used, then patient discomfort is reduced, but the delivery mechanism requires more precise control
Solution Approach 1:
The handle assembly incorporates feedback through tactile engagement features including the rotatable collar with circumferential slots, control knobs with defined rotational stops, and axial translation mechanisms with engagement points. These features provide tactile feedback to the operator during actuation, allowing precise control of implant deployment through touch and feel while maintaining percutaneous access
Data Source
AI summary
A medical device handle for percutaneous delivery of a medical device implant may include an elongated handle housing having a proximal end, a distal end, and a longitudinal axis extending from the proximal end to the distal end; a rotatable collar disposed about the proximal end of the handle housing; and a rotatable control knob disposed about a proximal portion of the rotatable collar. The rotatable collar may include a first internally-facing longitudinal slot extending less than a full length of the rotatable collar and terminating proximally at a distally-facing wall of an internally-facing circumferentially-oriented slot. The rotatable control knob may be configured to actuate the medical device implant between a delivery configuration, a deployed configuration, and a released configuration.