Surgery TRIZ Cases

A high speed drill uses a one-stage power train to transfer torque directly from the motor shaft to the burr shank.

Image processing apparatus determines detection signal count for interpolation to generate raster scan pixel data.

A medical shaft antenna monitors electrical characteristics to predict electromagnetic interference effects on generated signals.

A spiral tubular guide accommodates endoscope extension and contraction while preventing kinks and excessive friction during instrument insertion.

An asymmetric engagement member constrains a vein filter cartridge to one mounting orientation, preventing incorrect placement risks like vessel perforation.

Non-aldehyde fixatives crosslink animal tissue substrates, eliminating residual toxicity while maintaining flexibility and biocompatibility.

An array of independently addressable sensor pixels targets preferential skin pathways, reducing dilution factor variability and eliminating calibration needs.

An adjustable annuloplasty ring sizer uses tension wires to collapse and expand its size range through a single handle mechanism.

A magnesium alloy with optimized Nd, Zn, Ca, and Zr content provides uniform degradation and high mechanical strength.

A cartilage morcellator uses a zigzag knife and transparent lower body to cut tissue into small pieces.

Polyvinyl alcohol coating on microneedles solves rapid dissolution of carriers, enabling sustained release of low molecular weight drugs.

An expandable intervertebral prosthesis adjusts height in situ to maintain optimal distraction between vertebral bodies.

Processor measures actual transmission cable and actuator resistance values to calculate accurate driving voltage, compensating for signal loss in long cables.

Disposable cleaning adapters eliminate repeated sterilization cycles and cross-contamination risks while preventing valve misuse through integrated safety tags.

Segmented small diameter tools eliminate joint distension requirements, reducing recovery time and complications in knee and hip surgeries.

A scanning endoscope corrects drive signals using stored correlation coefficients to stabilize dielectric actuator displacement.

Spiral blade enclosures in a disposable femur head cutter resolve infection risks and dimensional deformation from resharpening.

A slotted wire tissue marker anchors securely in body tissue while reducing fatigue at the slit base through localized unbent stress relief zones.

Automates intraluminal pressure control via feedback loops, eliminating frequent manual operator intervention.

Clip chemistry grafts photoactive aryl-azide compounds onto polymeric substrates, preventing leaching and biofilm formation on medical devices.

A defining member with grooves controls adhesive spreading in a light guide fixing unit, preventing overflow that causes assembly failures in endoscopes.

Segmented hub design uses dedicated seals to prevent priming solutions from reaching signal line interfaces, ensuring connection reliability during cleaning.

A direct visualization catheter uses an articulating camera inside a transparent balloon to displace blood and provide clear axial views of heart tissues.

An articulated tongue depressor blade in a surgical mouth gag resolves trade-offs between insertion width and full tongue base exposure.

A biostable polyurethane composition uses a polysiloxane soft segment to enhance mechanical rigidity and oxidative stability.

A cardiac mapping system visualizes electrical activity levels within selected spectral slices on a heart map.

Multi-power EPR spectroscopy separates mechanically induced signals from radiation-induced spectra in intact fingernails to enable rapid mass casualty triage.

A color filter array with increased cyan filters improves resolution in green and blue wavelength bands.

Circumferentially rotated portions with varying wall thickness alter the cross-sectional profile of medical devices.

Intelligent carrier merges RFID tracking with temperature monitoring to maintain product integrity without manual intervention.

An integrated endoscope merges imaging and tool channels through a single port, eliminating cord clutter and reducing infection risks from reusable devices.

A hydrogel microneedle patch uses an acrylic resin dispersion to enclose a polyvinyl alcohol gel, creating a three-dimensional framework for mechanical strength.

A rotary dial and transmission mechanism enable single-handed bending control for endoscope introducing apparatuses.

A segmented clot retrieval shaft navigates tortuous vessels by combining a flexible distal section with a robust proximal section for pushability.

An endoscopic accessory device uses inflatable balloons to form a sealed compartment around the instrument for targeted fluid delivery.

An elastic plate spring on the neck trial secures fixation to the stem broach while enabling manual removal without extra instruments.

An injectable unclad microfiber scaffold restores annular strength through in situ crosslinking, avoiding invasive surgical suturing.

Segmented washing openings and another dimension positioning resolve insufficient aperture cleaning by directing fluid impact against adherent matter.

Dual distal end covers use elastic and rigid materials to maintain nozzle shape during fluid ejection.

An annular elastic sealing member presses against brazed solder joints to prevent dirt accumulation and enable effective sterilization.

Optimized axis spacing and angle of view resolve contradictions between three-dimensional effect and eye fatigue.

A sample collection detector integrates a sampling chamber and communicating device to enable quantitative delivery of biological specimens.

Engineered hydrogel nerve grafts feature continuous microchannels that guide axonal growth across defects.

Asymmetric grip section with concave finger placement guides connector orientation, preventing light guide collision and damage during insertion.

Alternating joint rings guide traction wires to suppress twisting in the bending portion, simplifying manufacturing and reducing costs.

Segmented light guides and angled reflecting surfaces distribute illumination evenly across forward and sideward fields of view.

Absorbent article integrates chemical reagents into the bottom sheet to detect medical conditions through visible color changes upon urine contact.

Antioxidant polymer coatings on iron implants prevent insoluble hydroxide formation, accelerating metabolic absorption and reducing biological risks.