Surgery TRIZ Cases

A molybdenum-rhenium alloy with optional carbon nanotubes improves fatigue life, strength, and biostability in medical implants without added bulk.

A Ni-free Au-Cu-Al alloy balances superelasticity, biocompatibility, and low magnetic susceptibility to reduce MRI artifacts in medical devices.

Separate axial and radial rake surfaces help a surgical bur stay stable in drilling, cut bone efficiently from the side, and protect nearby soft tissue.

Angled pillar slopes let a hose coupling release with one hand while preserving sealing and resisting shifting under cleaning pressure.

Modified drill point and axial relief geometry lets a surgical bur cut bone stably while gliding over the dura mater without tearing.

Centrifugal tabs lock the surgical tool during rotation, enabling linear insertion and removal without manual collet turning.

A heat-free press-fit joins the endoscope head and optic tube, avoiding brittle joints and improving flexural stability.

Heating and stretching serially deposited PTFE fiber mats improves alignment, porosity, tissue ingrowth, and fluid resistance.

Phase-changing shape-memory members let flexible instruments switch between easy bending and high stiffness without complex wire-compression mechanisms.

A rotating locking ring and sliding securing block create a rigid universal orthopaedic instrument connection that is easy to assemble and clean.

Spring-biased latches and actuators let a portable medical monitor lock securely in default or inverted positions for flexible clinical use.

A deformable heat-transmitting medium speeds heating and cooling of a shape-memory actuator for faster flexible-to-rigid switching.

A ball bearing inner ring reinforces the drive sleeve end region, enabling high torque transfer to dental tools with less shank damage.

Biasing members and tangs let one drive shaft securely engage and axially fix tools of different diameters without extra attachments.

Graphite-containing vanes replace liquid lubricant metering in a pneumatic drill motor, reducing friction and wear while simplifying maintenance.

Vacuum threshold sensing verifies marker band seating, while air bursts reorient misfed bands for faster, precise medical device assembly.

Counter-helical flutes collect bone swarf during drilling and return it on retraction, supporting autograft formation in minimal access surgery.

A flexible multi-cap bridges catheter and syringe size mismatch with a rib-and-groove seal to prevent leakage and contamination.

A Mg-Ca-Zn alloy balances ductility and degradation rate to hold soft tissue during healing, then safely resorb with low gas generation.

Multiple sliding bearing surfaces absorb axial load in an offset speculum hinge, improving stability, low-friction rotation, and compactness.

Tube length and radius are tuned to balance sterilant flow across endoscope lumens, improving low-pressure channel sterilization.

Micro- and nanostructures etched into a device’s base material create durable liquid-repellent medical surfaces without coating detachment or contamination.