Adjustable Aortic Punch Telescoping Mechanism
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Solution Overview
Problem
Current aortic punches are available in various sizes to accommodate different surgeon preferences, leading to the need for hospitals to stock multiple devices, and there is a desire for a device that can be adjusted to meet varying hand sizes and surgical needs.
Innovation Solution
An aortic punch with a telescoping mechanism that allows the user to adjust the overall length and the distance between the anvil and the shear, enabling a single device to be used for different surgical requirements, featuring a manual actuator assembly with threaded components that allow for precise control and adjustment without changing the relative positions of the anvil and shear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple fixed-size aortic punches are stocked to accommodate different surgeon preferences, then surgeon preference and comfort are improved, but device inventory complexity and storage requirements increase
Solution Approach 1:
The aortic punch incorporates a telescoping body mechanism that allows the shaft length to be dynamically adjusted between extended and retracted positions. This dynamic adjustment capability enables a single device to adapt to different surgeon hand sizes and preferences, replacing the need for multiple fixed-size devices in inventory.
Solution Approach 2:
The adjustable-length aortic punch serves multiple functions by accommodating different surgeon preferences with a single device. The telescoping mechanism allows the same punch to be used by surgeons with varying hand sizes, making the device universal rather than requiring specialized sizes for different users.
2Adaptability or versatility
If a telescoping mechanism is added to allow length adjustment, then adaptability to different surgeons is improved, but device structural complexity increases
Solution Approach 1:
The telescoping body consists of nested tubular segments that slide within each other to adjust the overall length. The inner tube is housed within the outer tube, creating a compact nested structure that provides length adjustment capability while maintaining a relatively simple and space-efficient mechanism.
Solution Approach 2:
The body of the aortic punch is divided into separate telescoping segments or tubes that can move independently relative to each other. This segmentation allows for length adjustment while keeping each individual segment structurally simple, avoiding the need for a completely complex redesign of the entire body.
3Manufacturing precision
If the distance between anvil and shear is adjustable, then surgical precision for different procedures is improved, but mechanism complexity increases
Solution Approach 1:
The distance between the anvil and shear is made dynamically adjustable through the telescoping mechanism. By extending or retracting the telescoping body, the relative position of the anvil and shear changes, allowing optimization of the cutting geometry for different surgical procedures and tissue types.
Solution Approach 2:
The adjustment capability is extracted as a separate functional element (the telescoping body) that can be independently controlled from the cutting action. This allows the distance adjustment to be handled by a dedicated mechanism rather than requiring complex integration into the cutting mechanism itself.
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
The adjustable aortic punch allows for a single device to be used across different surgeon preferences, reducing the need for multiple devices and enhancing surgical efficiency by maintaining consistent hole creation quality across varying user preferences.
Implementation Method 1
featuring a manual actuator assembly with threaded components that allow for precise control and adjustment
Data Source
AI summary
Disclosed is an aortic punch comprising a first body member having a proximal end and a distal end, a second body member disposed at least partially within said first body member, a manual actuator, a piston having an anvil disposed at a distal end thereof, and a shear, said shear being integral with said second body member. The first body member and second body member are axially movable relative to one another between a fully extended position and a fully retracted position and within a range of intermediate positions while maintaining the piston and shear in position relative to each other in the axial direction, and separately the shear is axially movable via manual actuation relative to said anvil between an insertion position and a shearing position and a range of intermediate positions.