Malleable Surgical Retractor with Integrated OLED Illumination
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Solution Overview
Problem
Surgical retractors with fiber-optic illumination often restrict a surgeon's movement due to cable attachments and fail to provide adequate illumination beneath the retractor, especially in curved or confined surgical areas, leading to glare and reduced visibility from overhead lighting.
Innovation Solution
A malleable surgical retractor with an integrated planar illumination source, such as LEDs or OLEDs, and a flexible design that allows bending to conform to anatomical structures, reducing the need for overhead lighting and minimizing glare by providing focused illumination within tight spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If fiber-optic cables are attached to provide illumination, then illumination is provided, but surgeon's freedom to orient the retractor is impeded
Solution Approach 1:
The patent removes the external fiber-optic cable attachment by integrating the illumination source directly into the retractor body. This extraction of the cable dependency allows the retractor to be freely oriented without cable restrictions while maintaining illumination capability through integrated LEDs or OLEDs.
Solution Approach 2:
The illumination source is merged with the retractor structure itself, creating an integrated unit where the light source, power supply, and retractor function as a unified system. This combination eliminates the need for separate cable attachments and enables unrestricted positioning.
2Illumination intensity
If fiber-optics-based retractors are used, then illumination is provided, but sufficient illumination directly beneath the retractor is not achieved
Solution Approach 1:
The patent transitions from linear fiber-optic illumination to a planar illumination source that emits light in multiple directions simultaneously. This dimensional change enables light to reach areas directly beneath the retractor by emitting downward, forward, and backward, creating comprehensive illumination coverage.
Solution Approach 2:
The planar illumination source provides different illumination characteristics at different locations and angles. By positioning multiple LEDs or OLEDs across the retractor surface, the system delivers targeted illumination to specific areas including directly beneath the retractor, rather than uniform illumination in a single direction.
3Strength
If rigid structures are used, then structural integrity is maintained, but the retractor cannot conform to curvature dictated by anatomical structures
Solution Approach 1:
The patent employs flexible printed circuit boards to carry the illumination components and power supply, allowing the entire retractor assembly to bend and conform to curved anatomical surfaces. This flexibility is achieved through flexible substrates and articulated joint designs that maintain structural integrity while enabling adaptation to various curvatures.
Solution Approach 2:
The retractor incorporates movable and adjustable components that allow dynamic reconfiguration of the structure. The flexible circuit boards and articulated joints enable the retractor to change its shape and orientation in real-time to match the anatomical curvature requirements of different surgical sites.
4Illumination intensity
If overhead lighting is used, then general illumination is provided, but glare and reduced visibility occur in the surgical field
Solution Approach 1:
The patent removes dependency on overhead lighting by providing self-contained illumination through integrated LEDs or OLEDs. This extraction of external lighting requirements eliminates the glare and shadowing problems associated with overhead sources, as the light is generated directly at the surgical site without creating harsh reflections or shadows from surgical instruments and personnel.
Solution Approach 2:
The planar illumination source acts as an intermediary between the power supply and the surgical field, providing controlled, directional lighting that eliminates the harmful effects of overhead lighting. The integrated design ensures light is delivered precisely where needed without creating glare on metallic instruments or casting shadows from surgical team members.
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
Enhances surgical efficiency and comfort by reducing the need for repositioning instruments and ambient lighting, allowing precise illumination in complex anatomical areas while maintaining flexibility and reducing glare from overhead sources.
Implementation Method 1
The planar illumination source may comprise one or more light-emitting diodes (LEDs)
Implementation Method 2
The planar illumination source may comprise one or more light-emitting diodes (LEDs), organic light-emitting diodes (OLEDs)
Implementation Method 3
The light-diffusing layer may comprise phosphorus particles, organic fluorescent dye, titanium dioxide particles, or may comprise any other scattering media
Implementation Method 4
an optical waveguide comprising a scattering material, such as phosphorus particles, titanium dioxide particles, organic fluorescent dye, or other scattering media, which may function to redirect incoming light from the illumination sources towards a surgical field of interest
Data Source
AI summary
Embodiments of claimed subject matter are directed to a malleable and integrally illuminated surgical retractor. In an embodiment, a malleable steel strip, having a thickness approximately in the range of 0.5-1.0 mm, may form a substrate. An elastically deformable layer, such as a polymeric layer, may be secured to the malleable steel strip. One or more meandering conductive lines, spiral conductors, or conductive inks, which may elongate and/or compress during bending of the substrate, may be secured to the TPU layer. The one or more meandering conductive lines, spiral conductors, or conductive inks may operate to couple current from an electronics module to one or more malleable illumination sources comprising, for example, an organic light-emitting diode (OLED).