Surgery TRIZ Cases

Ester-containing chain extenders help biaxially oriented polyurethane films retain tensile strength while degrading rapidly in vivo.

Independent valve timing reverses the projectile before the stop, varying impact velocity and frequency without changing pneumatic pressure.

A segmented multilayer substrate supports flexible physiological sensing while improving long-term attachment and structural robustness.

A passive multilayer skin device uses a 2.0–5.0 dielectric insulating layer to modulate ion channels without power or active substances.

Skin-facing antimicrobial layers on the housing and plug assembly help block microorganism incursion, biofilm formation, and measurement errors during extended wear.

Limited operability in endoscope auxiliary tools is addressed with linear and rotational controls that improve access to recessed treatment sites.

Multiple laser chips on one substrate provide different excitation wavelengths, replacing mechanical filter switching for reliable multi-dye endoscopy.

Rasp teeth let the hip stem carve the femoral canal during implantation, preserving proximal bone stock and reducing broach instrumentation.

A deformable tray with aligned reservoirs helps microneedles penetrate skin while increasing payload capacity for drug delivery.

Encoded LED colors communicate battery, connection, and scanning states more clearly, reducing cognitive load during ultrasound procedures.

Motion sensing and touch input switch coarse or fine bending control, helping operators inspect internal structures more precisely.

Direct room-temperature air intake and separate fan airflow cool an endoscope processor’s light source more efficiently.

A shared spectroscopic element disperses both optical paths into white-light and fluorescence bands for compact three-dimensional endoscopy.

Spaced occlusion elements and sequential sealing keep adjacent sheaths from obscuring imaging during closure of multiple vascular penetrations.

Yielding sections set a predetermined peak torque in a surgical wrench, improving repeatability without complex clutch mechanisms.

A parabolic applicator head and matching nib dispense ink along incision edges to preserve specimen orientation during downstream imaging.

A spectrometer compares test-object and reference spectra to detect incorrect component combinations before imaging and prevent distorted representations.

Nanoporous hydrophilic biomaterials combine catheter strength, lubricity, and sustained release without chemical crosslinkers or radiation.

A disposable surgical torque wrench uses weakened shaft sections that yield at a predetermined torque for consistent attachment and detachment.

Benzalkonium chloride coating helps polymeric mesh prevent bacterial colonization during hernia repair while supporting fibroblast growth.

Variable capacitance tracks intracardiac pressure while switchable circuits support wireless power and passive resonant sensing after electronics failure.

Cycling an indwelling glucose sensor between two potentials stabilizes current response, reduces run-in time, and limits baseline drift.

Calcified vessel occlusions can resist conventional guidewires; ultrasonic vibration at the active tip enables faster crossing and device passage.

Alternating reflectance and fluorescence capture lets shared memory and image processors avoid duplicate hardware and circuit-scale growth.

Vacuum suction draws bone fragments into a perforated filter, separating liquid while a plunger enables sterile, efficient graft discharge.

A coupling element synchronizes two scissor lifts to prevent articular plate deformation during stable tibial gap adjustment.

Separate forward and reverse valve phases tune projectile strikes on the applicator while improving control of treatment cycle efficiency.

Cuff inflation can harm the body; this case combines PPG and force signals with class-based neural estimation for real-time readings.

Repeated sterilization cycles challenge transducer seals; a welded casing around the piezoelectric stack helps preserve reliability and signal integrity.

Looped wire sets create large clot-entry openings while woven wire regions keep the intraluminal device supported during retrieval.

A 630–1064 nm light source, controlled irradiance, and conductive cooling support scalp phototherapy while limiting optical and thermal tissue damage.

Radial emitters and optical fibers provide targeted light delivery for β-cell photobiomodulation and more precise implantation.

An integrated LED, image sensor, and dongle replace external light and bulky processing equipment for portable, consistent imaging.

Laparoscope lens contamination can interrupt surgery; a trigger-operated spray and blade wipe maintain clear vision without removal.

An adjustable clamp stabilizes the endoscope, limits axial and rotational movement, and reduces physician fatigue.

A rotatable connector and translatable coupler separate handle orientation from shaft deflection, reducing wrist discomfort during multi-plane steering.

Axially arranged sensor substrates and a perpendicular power module simplify capsule assembly while reducing size for easier swallowing.

Laser chips on one substrate excite different fluorescent dyes, while a light combiner merges laser and visible light into one endoscope beam.

Continuous test strips and optical color sensing flag CAUTI indicators in catheter urine before culture results are available.

A reversible slit lets a secondary endoscopic channel retrieve oversized specimens without removing the endoscope, reducing trauma and procedure time.

Small-diameter plano-convex and biconcave lenses complicate processing and assembly; spherical segments simplify manufacturing while preserving optical performance.

Temperature compensation corrects phosphorescence lifetime readings to produce quantitative tissue oxygenation maps.

Unique visual and electronic IDs distinguish multiple implanted markers across X-ray, MRI, CT, and ultrasound for precise surgical ROI localization.

Elastic retention keeps the foreskin retracted so topical medication stays in contact with affected mucosal membranes during treatment.

Sequential endoscope images are screened for lesions while elapsed time from image capture guides precise re-capture.

Sensors track camera and scope orientation while a controller rotates image data to keep surgical tools aligned in view.

A double-convex handle guides a femoral rasp around the abdomen and pelvis, reducing femur rotation, trauma, contamination risk, and operating time.

Alternating 340 nm laser and white-light illumination reveals fluorescence patterns to distinguish malignant tissue below 5 mm.

A sliding contact and resistive layer convert implant movement into electrical resistance for accurate, continuous, non-invasive length sensing.

An inclined side wall in the lid recess helps drain droplets from the back surface and makes wiping easier after medical-instrument treatment.