Surgical Saw Blade with Thermal Core for Lower Cutting Heat
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Solution Overview
Problem
Existing surgical saw blades lack the ability to maintain precision and efficiency during surgical procedures due to high blade temperatures, which can lead to reduced visibility and potential tissue damage.
Innovation Solution
A surgical saw blade design featuring a thermally conductive core made of copper or aluminum, combined with a passive or active heat sink, to enhance heat dissipation and maintain lower blade temperatures, thereby improving precision and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional steel blades are used for cutting, then the blade structure is simple and easy to manufacture, but the blade temperature increases significantly leading to reduced visibility and potential tissue damage
Solution Approach 1:
The blade incorporates a hybrid construction combining steel cutting edges with a thermally conductive core material (such as copper or aluminum). This composite structure allows the cutting edges to maintain their sharpness and durability while the core material efficiently conducts heat away from the cutting zone, reducing blade temperature by up to 55% compared to conventional steel blades.
Solution Approach 2:
The blade is divided into distinct functional segments: steel cutting edges for cutting performance and a thermally conductive core for heat dissipation. This segmentation allows each component to be optimized for its specific function while working together to solve the temperature problem without requiring complete redesign of the entire blade structure.
2Productivity
If high cutting speeds are used to improve surgical efficiency, then productivity increases, but blade temperature rises causing reduced precision and potential tissue damage
Solution Approach 1:
The patent converts the harmful heat generated during high-speed cutting into a beneficial thermal management opportunity. The thermally conductive core material captures and channels the heat away from the cutting edges, transforming the waste heat that would otherwise cause tissue damage into an可控 thermal flow that can be managed through the blade's thermal pathways.
3Temperature
If cooling irrigation is used to reduce blade temperature, then blade temperature decreases improving precision, but surgical visibility is reduced and the system becomes more complex
Solution Approach 1:
The blade structure itself provides the cooling function through its thermally conductive core, eliminating the need for external cooling systems. The blade's internal thermal pathways passively conduct heat away from the cutting zone without requiring irrigation fluids, thereby maintaining clear surgical visibility while achieving effective temperature control.
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 design allows for reduced blade temperatures by up to 55% compared to conventional steel blades, enabling cutting without cooling irrigation and maintaining optimal surgical conditions.
Implementation Method 1
The core has at least two opposed longitudinally extending first core surfaces extending across a width of the core. The second material has a second thermal conductivity at least twice the first thermal conductivity.
Implementation Method 2
The blade mount includes a heat sink. The design allows for reduced blade temperatures by up to 55% compared to conventional steel blades.
Data Source
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AI summary
A surgical saw blade (24, 24', 24") comprises a distal portion (38) including a cutting edge (42, 42') with a plurality of teeth (44, 44') substantially entirely formed of a first material having a first thermal conductivity, a proximal portion (34, 34', 34") including a blade hub (30, 30'), and a body portion (46, 46', 46") disposed between and connecting the distal portion (38) and the proximal portion (34, 34', 34"). The body portion (46, 46', 46") includes a thermal transit core (56, 56') formed of a second material having a second thermal conductivity at least twice the first thermal conductivity and the core (56, 56') having at least two opposed longitudinally extending first core surfaces (57, 57A', 57B', 57") extending across a width of the core (56, 56'), and a pair of opposed vertical flanking members (60) made from a stiffer material than the second material of the thermal transit core (56, 56'), the vertical flanking members (60) extending longitudinally from the proximal portion (34) across the body portion (46, 46', 46") to the distal portion (38).