Surgery TRIZ Cases

A rigid proximal shaft, flexible tip, and irrigant baffle enable continuous viewing around obstructions while cleaning the image sensor.

A hollow body, pin, and wafer barrier secure bowel retraction for minimally invasive stoma reversal and shorter hospitalization.

A cam-and-follower shaft lets endoscope valves hold on or off positions, reducing fatigue during prolonged procedures.

Rigid specula can cause discomfort and limited visualization; liquid-filled balloon layers provide circumferential retraction for clearer exams.

Separate filters and sensors enable simultaneous visible and fluorescence imaging, avoiding sequential exposure-setting compromises.

A three-mode illumination protocol alternates ramping, steady, and dark phases to limit pain, photobleaching, and oxygen depletion.

A separate marker holder keeps metal out of the lens path, preserving optical clarity and enabling detection of broken eyewear.

This case replaces grinding and blasting on surgical instruments to reduce notches, residual stress, material transfer, and reflection.

Standardized camera modules and separate lighting assemblies reduce tooling, supply-chain complexity, and inventory across endoscope types.

A fixed camera module and offset working channel simplify endoscope production while supporting different tip sizes and tool movement.

A reusable endoscope body pairs with disposable sheaths and jackets to reduce contamination risks while avoiding astigmatism and reflection.

A fixed-dimension camera module supports varied endoscope sizes while separate lighting modules preserve configuration flexibility.

Learn how asymmetric, density-varied occluder arms adapt to inadequate ASD rims and reduce dislodgement risk during transcatheter closure.

A degradable membrane exposes self-sealing micro-chambers for saliva sampling, supporting DLMO assessment outside clinical settings.

This case uses pressure or electrical control to collapse catheter lumens for insertion and expand them for tool delivery.

Scene analysis maps lighting elements to image regions, adjusting LED or fiber output for clearer endoscopic capture.

A hydrogel support sheet dissolves faster than its pouch, enabling drug release and avoiding a later spacer removal operation.

This case uses a 0.1–3 μm homogeneous grain structure to inhibit microorganisms while supporting selected eukaryotic cells.

Arch, check, and burst valves combine with capillary flow for wearable sweat sampling and electrochemical biomolecule measurement.

Ankle and foot force sensors quantify abduction-adduction gap forces, helping standardize knee implant sizing and soft-tissue tension.

Dual massage mechanisms improve penile stimulation and sperm release efficiency.

An integrated reamer uses adjustable arc-shaped burrs to cover multiple diameters, remove cuttings, and limit tissue damage.

A standardized camera module and transition piece simplify endoscope tip assembly across sizes, reducing tooling and supply-chain costs.

A moving positive lens group enables autofocus, depth of field, and compact endoscope optics.

Different fiber numerical apertures improve coupling despite misalignment, while a disposable tube supports sterile reuse.

Water-band SWIR imaging differentiates CSF from blood and mucus, supporting real-time visualization without invasive contrast agents.

A porous body and cavity create a direct suction path that supports delivery through narrow lumens, reduces clogging, and sustains drainage.

Electromagnetic transmitters continuously locate the patient and ECG electrodes, improving MCG signal quality in unshielded scans.

One surgical connection member mates with Hudson, AO, and Trinkle connectors.

Multispectral endoscopy separates RGB bands to reveal lesions beneath bile pigment.

A ratchet rack separates wire connection from tensioning, enabling precise, automation-ready endoscope assembly.

A processing device uses magnetic patterns and field detection to guide endoscope movement toward stored target positions.

A handle-integrated spacer replaces loose parts, simplifying assembly while enabling precise axial positioning in a working shank.

An open, adaptable frame stabilizes syringe components for remote testing and clear X-ray capture without tooling interference.

A curved movement path synchronizes traction wires, removing pulley blocks to reduce friction, wear, components, and assembly complexity.

This case addresses graft strength and biocompatibility using a chitosan helical stent, nanofiber membrane, guide fibers, and hBMSC-ECM.

MCG-ECG electrodes track motion and location to correct cardiac signal artifacts.

A fixed rotatable irrigation assembly maintains uterine pressure, clear visibility, and secure connections during hysteroscope instrument exchange.

A flexible support and adjustable locator improve vascular aperture sealing across irregular tissue surfaces while reducing fluid loss.

This case shows how self-expanding wires and a conformable sealing member close defects while managing pressure differentials.

This endoscopic instrument nests electrical, mechanical, and optical lines inside a fluid channel for compact access and control.

A rotating filter turret uses combined detection targets and photo-interrupter feedback to position illumination filters accurately.

The existing pulse generation circuit polarizes transducers during frame non-diagnosis periods, maintaining reception sensitivity.

A nested lens-frame and holder structure limits displacement and bonding stress while maintaining optical performance under external loads.

This case uses a guide wall, O-ring, and partition wall to prevent channel tube disconnection while preserving airtightness.

This case uses modular, wedged-face coupler rings to join donor and receiving vessels in a secure three-way anastomotic junction.

A locally compressed treatment-channel wall sits beside the image unit, reducing distal diameter while limiting deformation during bending.

A view optimizing assembly uses clearing gas to defog and deflect debris without removing the laparoscope during surgery.

A head-mounted display exchanges medical-device data wirelessly to provide real-time guidance, troubleshooting, and inventory tracking.

Eccentric clutch feeding enables remote instrument control with disposable parts.