Incision Instruments TRIZ Cases

A disposable scalpel blade assembly uses a flexible arm and protrusion block to connect securely to a reusable handle.

Segmentation separates the effecting device from the cutting device, reducing instrument exchanges while managing increased device complexity.

A dual-balloon hemostatic device compresses the radial artery to stop bleeding while maintaining wrist flexibility.

A surgical stapling apparatus uses a drum member to convert linear input into rotational output, driving an anvil relative to a staple cartridge.

Electrocautery sealing replaces obstructive nasal packs, resolving the contradiction between effective hemostasis and maintained nasal airflow.

A surgical knife safety handle uses a movable guard to shield the blade during operation.

Asymmetric mounting keys and inserting blocks secure interchangeable tools to prevent incorrect connections during replacement.

A hand tool features a movable head portion that changes orientation between accommodated and projected states.

A surgical clip applier uses a shuttle to actuate an integrated cutting mechanism independently of the handle.

Segmenting the instrument into disposable and reusable shafts resolves cost-effectiveness versus performance consistency in electrosurgical procedures.

Segmented handle parts connected by a flexible hinge allow adjustable blade spacing, eliminating separate molds for different configurations.

A surgical cutting instrument with a mechanically adjustable blade adapts to varying aortic diameters, preventing particle dislodgment into the bloodstream.

A removable cap with a frangible tab protects the blade assembly in dermaplaning devices.

An anti-microbial coating on a surgical knife uses a water-soluble adhesive to release agents into the wound track, reducing endophthalmitis risk.

Co-molding silicone into the handle reduces friction during blade extension, preventing snagging and ensuring smooth operation.

A stoma instrument uses a radially expanding grasping member to hold biological tissue in place during puncture.

A surgical instrument with a cylindrical tube guides a wire to advance a blade along a precise path.

Three-sided blade makes simultaneous longitudinal and transverse cuts through the guide, resolving uneven graft cross sections caused by tendon toughness.

An insulated channel and tab mechanism integrates a scalpel with bipolar forceps, eliminating switching time while preventing therapy current interference.

Conductive foam layers complete circuits when pierced by sharps, enabling automated RFID tracking to resolve manual counting errors.

Permanent magnets replace degrading elastic springs in this lancet drive mechanism, ensuring consistent tissue penetration depth without electrical power.

Clamping tubes with shape-memory components invert and retain plicated tissue for precise endoscopic resection.

A V-shaped incision locator aligns with the femoral axis to guide precise surgical cuts.

A scalpel handle integrates a movable shield and removal wedge to secure the blade holder within the body channel.

A surgical knife with a rotatable round blade enables precise incisions in narrow ear canals.

A single integrated tool merges a myringotomy cutter with a ventilation tube holder to enable rapid, one-step incision and insertion.

A radiofrequency electrode delivers controlled thermal energy to heat and disrupt subcutaneous septa.

An actuator drives reciprocating stylets via ultrasonic transducers to create tunnels through subcutaneous tissue, reducing trauma compared to blunt dissection.

An inner piercing member and outer cutting member counter-rotate to shear pliable tissue walls lacking structural support.

A surgical knife handle incorporates a lateral blade support structure to stabilize the cutting edge.

Ferromagnetic coating on a conductor enables rapid inductive heating, minimizing unintended tissue damage from electrical current.

A guide plate with a peripheral ridge constrains cutting tool movement to ensure uniform tissue flap thickness during surgical preparation.

An angled handle head secures a ceramic blade to prevent contamination and allow multiple sterilization cycles for ophthalmologic surgery.

A device for performing an allergy test uses a compressible supporting material to displace a pricking tool and control penetration depth.

A control circuit measures complex impedance of an ultrasonic transducer to estimate end effector state.

Segmentation and multi-functionality resolve the conflict between secure instrument attachment and surgical site visibility in spinal procedures.

Compliant arm lockout mechanisms prevent partial anvil assembly and enforce clamping pressure before firing.

A surgical cutting apparatus uses dual microwave channels to deliver controlled energy for tissue resection.

A hook-shaped ultrasonic osteotome tool bit with a tooth-like interconnecting piece cuts bone tissue efficiently.

A surgical blade coupler uses a pivot member to lock blades into a housing.

An electric motor in a disposable loading unit automates stapling and cutting, reducing operator fatigue from manual ratcheting.

A control circuit identifies calcified vessels via impedance sensing to adjust ultrasonic blade activation.

Inward package detents engage adaptor recesses to secure the blade tip, preventing contamination and enabling torque-based release.

A safety scalpel uses a sliding blade shield that engages a deadlock channel after use to secure the blade.

A scalpet array with spiral threads rotates to resect redundant skin in a pixelated grid pattern.

Disposable blade attachments paired with an illuminated handle resolve safety and precision contradictions in home dermaplaning.

A cutting ring assembly uses a thin rigid intermediate member to provide a dedicated shearing surface for the annular knife.

A surgical staple cartridge houses a knife member within a distal garage structure to provide lateral clearance for dislodged staples during actuation.