Surgery TRIZ Cases

Base-mounted shape memory alloy actuation bends a flexible endoscope shaft up to 180° while keeping the insertion portion slim and easier to sterilize.

Detected bending patterns at the distal cord end trigger visualisation functions without hand removal, preserving scope position and avoiding added buttons.

A dual-enclosure nuclear implant cures in situ to match disc elasticity, absorb load spikes, and reduce subsidence, migration, and expulsion.

Heating and pressing a thermoplastic pin welds the actuation cable to the pivoting part, improving attachment reliability and assembly speed.

A compliant rib retractor blade bends to match rib shape, spreading force over a larger area to reduce tissue injury, nerve damage, and fractures.

Coaxial plastic shafts and conical form-locking keys cut endoscope steering weight and cost while preserving precise torque transfer and haptic feedback.

Coaxial sliding contacts and a two-conductor serial link carry power, control, and image data through a rotating endoscope joint while saving space.

A peptide-linked quenched coating reveals specific microbes by releasing the quencher, enabling rapid surface detection with fewer false results.

Adjusting dual-poloxamer concentration by rheometer keeps peak viscosity at 36-38°C, balancing easy injection with stable lesion lift.

An inner shaft web guides the optical unit into the tip bore and separates access articles to prevent jamming during insertion.

A rotating plunger ball between the push button and chuck arms cuts friction and heat, enabling compact, reliable dental drill changes.

Blasting with alundum and glass beads reorients resin fibrils and crushes voids, helping reusable medical devices resist solvent cracks.

A meniscus lens and freeform lens expand endoscope coverage to capture forward and side views at once, reducing repositioning during procedures.

Supporting the transducer and blade at vibration nodes preserves resonance amplitude and stability in a compact ultrasonic tissue treatment tool.

A PEEK-coated nitinol drill shaft enables flexible intramedullary reamers to be reprocessed reliably while containing splinter risk and waste.

A lubricious disposable sheath secures to the colonoscope, lowers bowel friction, reduces looping, and helps shorten procedure time.

A 3D model and marker-based overlay align ultrasound with the surgical field to improve internal structure visibility during endoscopic surgery.

A supported distal housing cushions MEMS sensors from insertion and use forces, preserving measurement accuracy in medical assemblies.

Intersecting nozzle ports follow the curved convex lens surface to clean edge and center areas more thoroughly for clearer endoscope imaging.

A protrusion-recess blade joint strengthens a compact ultrasonic treatment unit and boosts distal vibration amplitude without a horn.

Independently switchable light elements and automatic mode matching simplify multispectral and fluorescence imaging while avoiding path-length errors.

A ceramic implanted tube with integrated lens enables repeated neural monitoring with less tissue damage, fewer allergic reactions, and steadier signals.

A conversion structure creates transverse vibrations while a damping section suppresses harmful longitudinal motion at the machining side.

A nitinol medullary drill shaft with full-length PEEK coating enables sterile replacement, preserves flexibility, and blocks fragment penetration.

A spring-driven puncture mechanism deflates a toroidal reservoir to sample GI fluid and deliver liquid with lower energy use and less capsule space.

A rotatable distal head uses sensors and cable compensation to preserve endoscope articulation while improving camera positioning.

By tracking gaze across task-specific image regions, this case improves ASD assessment accuracy without relying on simple whole-screen viewing alone.

Adjustable optical elements shift front and side endoscope views to reduce blind spots and overlap, improving continuous tissue imaging.

A stepped pipe sleeve and O-ring seal the endoscope channel tube without bonding, preventing leaks and disconnection despite tolerances.

Partition walls in the endoscope handle isolate the PCB from moving steering wires, preventing damage and avoiding labor-intensive encapsulation.

Angled, recessed actuator surfaces let multiple fingers control the endoscope elevator, reducing thumb strain and improving tip handling.

A distal abutting portion keeps inner and outer tube clearance stable, improving cutting and hemostasis consistency on thicker tissue.

A sliding inner-outer cylinder attachment retracts for clear endoscope viewing and extends only when procedural access is needed.

A non-contact infrared thermopile measures test card temperature to correct tear osmolarity readings during rapid environmental changes.

A tapered sensor head with slanted surfaces and cable alignment helps inspection cameras avoid snagging during insertion and removal.

Accelerometer- and gyroscope-guided coupler rotation keeps endoscopic images aligned while enabling precise fluid control during orientation changes.

A sliding carriage lets the transducer advance and retract independently, improving engagement with calcified occlusions while limiting sub-intimal migration.

Negative-pressure suction and an elastic lens mount stabilize living tissue against pulse and respiration motion for clearer high-resolution imaging.

An external light source placed through an expandable instrument preserves ureteroscope channel space while improving treatment-site visibility.

Segmented movable chuck pieces and tapered fitting maintain dental tool grip under vibration, reducing wear, loosening, and dropout.

Interlocked non-circular sculpting loops shape femoral implant cavities more precisely while lowering bone stress and fracture risk.

Inner and outer shutter zones balance light, image quality, and depth of field while helping 3D imaging maintain a constant horizon.

Tile-based comparison of white-light and fluorescence frames helps identify cancerous tissue extent and confirm healthy resection margins.

A shape-memory urine collector conforms to male or female anatomy, reducing leaks and discomfort while enabling vacuum fluid removal.

Orientation sensors and image rotation keep surgical views aligned with gravity as the scope turns, simplifying coordinated multi-view imaging.

A porous low-melting-point resin microneedle maintains skin-penetration strength while improving fluid absorption and drug delivery without residue.

A windowed coupler cover shields part of the endoscope control ring to prevent accidental imaging changes while preserving intentional adjustment.

A plug-driven pivoting endplate creates post-expansion access for bone growth materials while restoring spinal spacing and alignment.

A tube-wall cutter and one-way locking cap release buffer automatically, prevent reopening, and make home specimen transport safer.

An elastic connector keeps the endoscope filter parallel to the cover glass, cutting ghosting without costly anti-reflection coatings.

A disposable catheter endoscope uses motorized rotation to capture panoramic bladder images without complex manipulation.

An in-line fluid flow control assembly prevents siphoning and leakage by automatically closing when pressure drops after connector disconnection.

Merges ferrule and mounting functions into one integrated substrate to reduce rigid length while maintaining reliable optical signal transmission.

Nested arm members on an elongate support adjust the working channel size, reducing tissue trauma and recovery time during minimally invasive surgery.

Segmented elastic wires maintain a large proximal diameter, enabling calculus capture in dilated areas where prior baskets fail.

Segmented housings allow sensor replacement for repeated measurements, solving the trade-off between device simplicity and adaptability.

A centering mount aligns the endoscope exit pupil with an optical scanning device for precise inspection.

Electrical arcs create subsonic pressure waves within a fluid-filled balloon, disrupting calcified lesions without damaging vessel walls.

Co-precipitating tobramycin into hydroxyapatite seed layers creates uniform therapeutic agent distribution within the coating structure.

A removable coupling device connects medical article channels externally before insertion into a processing unit.

Moving the control key to the connection part eliminates false triggers caused by handle manipulation, improving operational reliability.

Thiolated alginate gel creates a temporary absorption barrier via disulfide bonds, reducing nutrient intake and body weight without invasive surgery.

A disposable air-water valve assembly uses a tripartite stem to control fluid flow in endoscopes.

Radiation cross-links hyaluronic acid and polyethylene glycol, eliminating toxic chemical agents while maintaining structural stability.

Twisting strut intermediate regions expand surface area engagement to resolve vessel wall trauma and capture device complexity trade-offs.

A processing system assigns visual indicators to imaging data sets to highlight critical parameters.

A tubed manifold holds a detachable working channel tube within a structural groove, preventing internal surface scratches from instrument insertion.

Segmented sterile modules capture light transmission data via unique identifiers, resolving complexity constraints in medical device testing.

A vaginal speculum uses a ratchet and pawl mechanism to hold upper and lower bills in position.

External cooling devices dissipate heat via a dedicated surface, preventing tissue damage and sterilization issues.

Overlapping D-cut optical elements resolve the trade-off between stereoscopic effect strength and outer diameter constraints.

Segmentation separates a disposable protective sheath from the reusable endoscope body, resolving the trade-off between infection safety and medical cost.

A detachable coupling part mounts rotatably on an endoscopic shank to isolate working insert rotation from the stationary hollow tube.

Absorbent disc and hollow dome assembly wets telescope lenses via capillary action, enabling in-situ cleaning without removing the instrument from the trocar.

Sliding collar actuation directs basket struts inward to encase obstructive material, extending aorto-venous graft life.

A treatment support apparatus generates fluorescence distribution images of a drug administered to a cancer patient using an excitation light source and detector.

Internal sensor fusion resolves interference from strong external magnetic fields, enabling precise real-time localization of the capsule within the body.

Narrow-bore tube with inverted swab placement reduces liquid volume and contamination risk during PCR setup.