Surgery TRIZ Cases

Overlapping a flexible substrate and cables on the image pickup unit substrate reduces endoscope insertion diameter while maintaining electrical connectivity.

Disposable foam swabs on tapered rods clean minute channels without scratching instruments or leaving fibers.

Periodic heating of a shape memory alloy actuator moves an endoscope lens to reduce stress and prevent lattice defects during long-term operation.

A digital body weight scale records user audio and transmits health data to social networks for interactive engagement.

An optical unit uses an inclined magnet voice coil motor to drive lens movement along the optical axis within a compact endoscope assembly.

A linear member transfer apparatus uses a compression spring to constrain brush expansion and stabilize the coming-out force.

Integrating multi-band light sources and sensors into a single pen housing eliminates disposable components while maintaining high spatial resolution.

A modular fluid flow controller adjusts cross-sectional area via a foot pedal mechanism to manage irrigation rates during surgical procedures.

An expandable brachytherapy applicator uses an actuator to bow catheters into a curved plane for radiation source placement.

Segmented rigid and flexible members enable programmable drug release, resolving the trade-off between ease of insertion and dosage adjustability.

Segmented shaft design achieves uniform bend radius while maintaining torsional rigidity to protect internal fiber optics.

Maleimide and thiol crosslinking groups create stable alginic acid derivatives that resolve insufficient gel stability after crosslinking.

Segmented prosthetic spinal discs navigate around the spinal cord during posterior implantation, reducing bulk and injury risk.

Rack and pinion actuation translates blades to expand the aperture beyond incision size, reducing healing time.

Inverting the endoscope distal tip pulls body lumen side walls into the optical field, resolving access limitations in complex anatomical folds.

Dual bending portions use circumferentially separated traction members to align directional movement.

A transparent lens cover with an integrated light-blocking member absorbs internally reflected light within the endoscope optical path.

Reusable specimen holder uses a spiral groove plug to control steam penetration and vacuum evacuation for consistent sterilization challenges.

Layered excipients with distinct melting points enable sequential drug release to interrupt inflammatory cascades and prevent restenosis.

Coil magnets reverse impactor motion via a bouncer magnet to minimize kinetic energy loss during reversal.

A flexible endoscope utilizes empty spaces between internal tubes and wires to route irrigation fluid.

A battery housing door mechanism prevents inadvertent opening during surgical tool operation, maintaining sterility and ensuring continuous power supply.

A single connector merges electrical and illumination signals into one cable, reducing setup time and space requirements.

A compact eye chart device uses a lateral display and dual mirrors to redirect light through a convex lens system.

Segmenting the endoscope cap into a detachable cover and pedestal resolves cleaning complexity while maintaining elevator reliability.

A rod secures a piezoelectric stack between a horn and end mass, maintaining consistent pre-compression for reliable ultrasonic energy transmission.

A titanium matrix composite disperses magnesium filaments to lower the material stiffness.

A resilient cellular material retains histologic tissue samples during chemical processing and embedding procedures.

Movable slider covers the extraction tip to minimize accidental injury risk while maintaining portability for daily carry.

A guided injection needle system positions a discharge opening at a constant distance below the skin surface for precise reagent deposition.

Magnesium, zinc, or iron alloys form temporary support structures covered by autologous tissue to eliminate long-term thrombosis risks.

A self-propelled catheter uses serially arranged inflatable chambers to grip passageway walls and crawl forward through curved lumens.

A curved ultrasonic end effector with a constricted portion and stress concentration zone moderates cross-sectional area variation.

A surgical drill attachment integrates a manual ratchet drive between motor and tool couplings.

A homomorphic deconvolution operation estimates the system transfer function from backscattered ultrasound data to characterize vascular plaque tissue.

Registration markers provide translation and rotation data for automatic image alignment, resolving correlation challenges in medical diagnostics.

A medical endoscope relocates the treatment tool pipe line to a proximal housing adjacent to the distal tip.

Non-circular flute geometry reduces chatter and thermal necrosis by distributing cutting forces evenly across the bur head.

A connector mechanism with open-close members and a locking member attaches long members to an endoscope.

A medical camera handpiece uses a rotatable sleeve to switch optical modes.

Integrates power supply and control circuit within the handpiece to eliminate external cords while maintaining optimal performance across varying loads.

An irreversible wrist strap prevents premature patch removal to ensure adequate contact time for biologically active substance absorption.

Segmented struts expand distal to cerebral clots, distributing disengagement force to prevent vessel wall damage.

Multi-directional transmitters emit identifying signals across multiple x-y plane directions to ensure reliable detection of implantable medical devices.

Independent arm movements adjust intervertebral device height and angle, resolving correspondence loss between trial sizing and final implantation.

Implants displace connective tissues to alter joint force vectors, reducing surgical morbidity compared to invasive bone cutting.

Implanted atrial septal device uses directional valves to lower left atrial pressure while mesh structures block thrombi passage.

Higher-order resonance excitation increases optical fiber vibration amplitude without enlarging the scanning part or generating excessive heat.

An isolation chamber protects the high-velocity liquid-gas jet spray from atmospheric turbulence, maintaining kinetic energy for deeper skin cavitation.