Excision Instruments TRIZ Cases

An oval-shaped surgical stapling tool assembly pivots to align with anatomical constraints.

An undulating clot retrieval device engages occlusive material via wave-like geometry, reducing compressive force and preventing displacement during removal.

Segmented struts with radial gaps cut calcified plaque in body lumens, preventing device entanglement and tissue damage.

A rotating ultrasonic blade extends within a hollow sheath to cut tissue precisely.

A retractable surgical device dissects hypertrophied ligamentum flavum, reducing muscle damage and spinal instability associated with open laminectomy.

Dual reciprocating looped blades replace spinning mechanisms to improve cutting efficiency while reducing injury risk to nearby organs.

Segmentation prevents shaft unwinding and fluid loss during reverse rotation, maintaining irrigation integrity at high speeds.

A segmented ultrasonic surgical instrument uses a rail guide to slide the distal end effector along the sleeve for precise tissue manipulation.

A powered shaving instrument with a cutting tip and window removes intervertebral disc material.

Fluid flow through vent holes creates negative pressure to capture material fragments, preventing embolization during atherectomy procedures.

A flexible guide tube rotary cutter removes intervertebral disc tissue via vacuum suction, preventing annulus trauma during nucleus extraction.

An elastically flexible electrosurgical cutting loop extends alongside an extraction bag to enclose resected tissue directly upon detachment.

Stabilizer assembly with distal struts sandwiches tissue to fracture calcifications, increasing valve cross-sectional area and reducing paravalvular leak risk.

A polypectomy snare with a non-circular cross-section minimizes buckling and bending to maintain structural stability during lesion retraction.

A thrombectomy catheter lumen expands to match local blood vessel dimensions, acting as a scoop to collect thrombus during displacement.

Expandable aspiration catheter removes large clots via vacuum pressure while minimizing vascular damage.

A helical coupling sheath converts torque to axial force for advancing a constriction crossing tip through vascular structures.

Dual-layer device applies high radial force at engagement zone and low force at vessel interface to prevent wall damage while consolidating clot.

An inclined cutting edge reduces high severing forces and prevents tissue damage by applying point-source pressure during surgical procedures.

A microelectronic controlled magnetic cleaning system uses micron-scale fine lines and a high-precision micro-motor to manipulate obstructions.

A triple-tubular tissue resection device uses rotating and reciprocating inner blades to cut biological material.

A medical device shaft rotates to orient a cutting portion for precise lesion removal.

A monolithic thrombectomy device integrates a guidewire-like delivery portion and an expandable treatment section from single biocompatible tubing.

An intra-cardiac myocardial resection device features a protective sleeve and annular blade for precise tissue removal.

A flexible first jaw and compression elements reduce firing force in surgical instruments.

An oscillating morcellator blade cuts tissue using high-frequency vibration to minimize mechanical wear on the cutting edge.

A solenoid-driven reciprocating tip delivers focused impacts to fracture calcified plaque within intravascular catheters.

A probe generates ultrasonic vibrations to excise cartilage tissue via friction heating.

Segmentation and extraction principles enable removable motor components that resolve the contradiction between structural integrity and ease of sterilization.

A medical device drive shaft uses composite coils to balance expansion and contraction forces during rotation.

A motorized catheter deploys a rotary scoring element to slice calcified lesions, enabling optimal dilation and enhanced drug delivery.

Coupling member accommodating portion prevents unintended engagement while tapered surfaces facilitate precise clip insertion.

A telescoping atherectomy device uses a flexible sheath and helical cutter to extract plaque from arterial walls.

Thermal actuation replaces bulky mechanical linkages in the snare device, enabling precise polyp removal while preserving tissue integrity for biopsy.

Proximal collection chamber reduces distal length for short landing zones while raised elements transport debris via fluid flow.

An expandable macerating catheter isolates mobile thrombi using proximal and distal occlusion while rotating to fragment debris for safe aspiration.

A medical device uses a lock pin to set the outer tubular member window orientation while an alignment knob rotates the inner tubular member.

Angled eyelet curette removes plaque while minimizing injury risk.

A hand-held shaft puller uses a specific distal channel to engage and withdraw thrombectomy system components, reducing kinking risks during clot removal.

Segmented impactor struts expand to deliver controlled force, fracturing valve calcifications while conforming to curved leaflet geometry.

Segmented inner tube cuts thrombi into small pieces to prevent clogging in narrow catheters, enabling efficient removal without thrombolytic agents.

Differential seal friction in a medical device hub unit balances torque transmission and sealing performance for effective plaque removal.