Excision Instruments TRIZ Cases

An integrated aortic punch combines a cutting blade with a circular tool to create precise holes in blood vessel walls during surgery.

A surgical adapter couples rotary handle assemblies to linear loading units via a drive assembly with opposing thread sets.

Straight edge openings on the distal cap allow adjacent tissue sections to be removed continuously without leaving residual gaps between circular cuts.

Herringbone staple arrays enable radial expansion of anastomoses, reducing stricture risk and improving peristalsis.

A surgical instrument drive housing integrates jaw manipulation and knife deployment within a single shaft assembly.

Parallel jaw closure minimizes tissue milk out and ensures uniform energy distribution for complete sealing and cutting.

A vascular drilling device uses rotating loops to mechanically fracture chronic total occlusions.

Segmenting the procedure into two contained bags prevents cancerous tissue seeding during morcellation while enabling safe instrument access.

Real-time optical coherence tomography imaging identifies the external elastic lamina to guide cutting depth and prevent vessel wall trauma.

Segmented arcuate cutting members with recessed clearance portions remove plaque while preventing interference between adjacent blades in tortuous vessels.

Independent wire segments enable complete tissue constriction while reducing pressure on the sheath to prevent damage.

Offsetting the shaft axis inside the hollow body suppresses filter rotation, maintaining thrombus capture efficiency and reducing pulmonary embolism risk.

Lateral blade deployment overcomes elastic recoil in hard calcifications, enabling precise scoring independent of vessel diameter.

Radially extending a cutting element from a hollow member removes disc nucleus tissue while minimizing annular defects.

A flexible recanalization device with a coiled distal end tube secures and removes thrombi from vasculature.

A manual thrombectomy device drives simultaneous aspiration and fragmentation to remove clots.

Twisted loop snare devices capture vascular objects securely while minimizing tissue damage during retrieval through tight spaces.

Segmented bayonet and magnetic attachment mechanisms enable quick cutter decoupling for thorough cleaning while maintaining stable surgical coupling.

Shapeable distal tip bends into curved configurations to access occlusions in tortuous vessel segments.

Eccentric drive geometry expands the working diameter during rotation, removing stenotic material without blocking blood flow.

A lever and piston mechanism guides implantable plates into soft tissue with precise alignment.

Segmented cutting wire edges stabilize tissue contact, preventing slipping and uncontrolled cutting during ingrown PEG bumper removal.

Rotatable elongated cutters pivot on angled axes to adjust the cutting diameter, eliminating multiple tool changes and reducing surgery time.

Metal protrusions on a fingertip-mounted device scrape and crosshatch tissue, enabling access to tunneled wounds that rigid curettes cannot reach.

A steerable atherectomy catheter uses a rotating cutter assembly to remove occlusive materials from blood vessels.

Segmented cutting elements on a surgical tool base module create radial clearance areas that dissipate heat and reduce material waste during precise machining.

Hinged arms transition the device to a rivet-like shape, while apertures deliver adhesive through the middle ring to reinforce the gastrointestinal anastomosis.

Segmented high-frequency electrodes allow independent power adjustment to resolve the contradiction between secure tissue sealing and minimizing thermal damage.

A rotating tissue cutter creates a helical channel for debris evacuation.

An echogenic curette reflects ultrasound waves to enable real-time visualization of the instrument during suction dilation and curettage procedures.

Magnetic coupling transmits torque from a reusable drive motor to a disposable atherectomy burr, eliminating mechanical wear and simplifying sterilization.

A polypectomy device uses a movable inner tubular body to create variable openings for vacuum suction of uterine tissue.

A mechanical dermabrasion apparatus generates discrete skin damage zones using rotating abrading elements.

A detachable nosecone distal section enables rapid tissue collection and cleaning in atherectomy catheters.

An inverting sheath folds over a retriever to contain a thrombus, preventing fragmentation and endothelial damage during removal.

Flexible mesh support prevents blood vessel damage and device breakage by allowing cut plaque debris to pass through gaps during atherectomy.

Segmenting the reusable drive from the disposable catheter via a magnetic intermediary maintains sterility while allowing precise control of the deflected tip.

A tissue-removing catheter uses a jogged portion to apply urge force against the body lumen wall.

Perpendicular deployment of the snare loop minimizes perforation risk and procedure time during foreign body extraction.

A stepped staple cartridge creates varying gaps between the anvil and tissue to deploy different sized fasteners across the surgical site.

A catheter assembly uses a supported loop wire to bypass vascular occlusions with precise size control.

Segmenting the guidewire into the catheter eliminates internal obstructions, increasing basket accommodation capacity for efficient tissue removal.

A catheter with a rotating distal tip and OCT sensor navigates vascular occlusions.

A surgical stapling instrument uses stepped tissue contacting surfaces to create a variable pressure gradient across the staple cartridge.

An articulated medical puncturing device pivots a tool carrier via a stop-limited joint to access deep joint defects without excessive trauma.

Inner tubular member protects guidewire from abrasion while rotating treatment member shears debris to prevent aspiration choking.

A catheter assembly uses a fluid-driven mechanical cutting element to lacerate bioprosthetic transcatheter valve leaflets.

Buckling struts orient grafts to host vessels, eliminating cardiopulmonary bypass risks during beating heart procedures.

Integrated tubular sheath separates rotating cutter from guidewire to prevent coating abrasion while longitudinal lumen enables continuous debris aspiration.