Cannulas TRIZ Cases

Interengaged stitches enable progressive inversion of the tubular member, minimizing friction during retrieval in confined spaces.

Spring-biased visualization stylet extends past the needle tip to prevent organ injury during blind tissue penetration.

A needle pierces the duodenal wall to create a direct tunnel into the bile duct for treatment device insertion.

Flexible fins in surgical cannulas compress tissue to maintain fluid retention and improve instrument access, preventing leakage during manipulation.

A puncture device uses a protective sleeve to isolate the base and a sheath tube with thread structures for secure fixation.

A percutaneous access device uses a hingedly connected distal portion to align bores for instrument insertion.

Expandable member seals cervical os to contain vapor, which condenses on endometrial tissue for controlled thermal ablation without uncontrolled heat damage.

A surgical tool holder stabilizes a cannula at a fixed angle using a locking mechanism to prevent transverse translation.

Segmented disposable imaging modules eliminate cross-contamination risks while maintaining high precision in field diagnostics.

A localization device uses a slidable control rod to deploy a marker through a cannula for precise breast lesion marking.

A neurosurgical tissue cutting device uses a reciprocating inner cannula within an outer cannula to sever tissue samples.

A hydraulic implantation device pushes a metabolite sensor from a cannula into tissue using controlled pressure.

A surgical device employs a biasing valve system to open flush ports for moisture removal while maintaining seals during storage.

Barrier ridges and a cleaning obturator prevent fluid fouling on viewing scope lenses, eliminating frequent lens cleaning and reducing surgical procedure time.

Adjustable mold retains viscous filler in non-horizontal positions, eliminating patient repositioning.

A surgical instrument uses a spring to apply constant compression force to hemorrhoidal tissue for minimally invasive treatment.

Expandable leaflet engaging members fix autologous tissue to prevent venous reflux re-adherence.

Segmenting the motorized tool from the disposable pump unit reduces manufacturing costs while maintaining high flow rates and ergonomic handling.

An integrated cannula locking mechanism reduces manufacturing costs and minimizes surgical movement through component merging.

A puncture needle uses a stopper member to define a sample containing section within an outer tube.

A surgical cannula uses proximal and distal flanges to compress expandable members for fluid transfer between them.

Flow restrictor maintains inflation pressure in the bladder, eliminating need for specialized instrumentation during sinus dilation.

A catheter assembly uses an offset curved needle to extend from the distal end at a divergent angle relative to the lumen axis.

A puncture needle system integrates an optical lens to visualize placement during minimally invasive procedures.

A processor retrieves stored focus distance values to maintain camera focus when a medical instrument leaves the field of view.

Segmented single-piece conical valve with ribs and convolutes seals varying instrument diameters while reducing manufacturing complexity.

Segmenting the tip into a disposable stylet and reusable shaft resolves wear while internal cooling vents steam to enlarge heat lesions.

A deformable light instrument engages the inner wall of a retractor channel to deliver illumination.