Surgical Needles TRIZ Cases

A hollow implant needle with a tapered tip uses slant surfaces to split skin tissue during insertion.

An integrated medical dressing anchors catheter hubs via a polypropylene reinforcing structure that spreads pulling forces to prevent dislodgement.

A surgical probe uses a reduction gear to move an electrode inside its body, enabling precise distal tip control.

An isolation member with an ejection hole directs liquid away from the rotational drive unit.

A teleoperated arm uses hydraulic transmission to position needles inside an MRI bore.

A surgical cutting instrument integrates distal suction apertures into its tubular blades to enable vacuum aspiration through an internal bore.

A medical needle with a metallic glass material layer maintains sharpness after repetitive piercing operations.

A wound treatment system alternates negative pressure and hyperbaric oxygen therapy using hospital wall vacuum and oxygen lines.

Tunneling tools create substernal pathways for leads, reducing defibrillation energy and improving patient comfort.

A cooling system maintains tissue viability and integrity by preventing thermal damage during resection.

A tissue collection system uses a rotating fenestrated member to control fluid communication between chambers.

A movable arm engages a lateral opening to prevent premature expulsion while avoiding direct pressure that could damage the implant during placement.

Inner guides eliminate complex retaining systems, reducing assembly time while a single loading stud simplifies operation.

A marker delivery device uses a ramped tip to deploy biodegradable markers through a biopsy needle cannula.

A rotating tissue sample holder aligns chambers with a cutter lumen and permits instrument insertion through a manifold passage.

A stylet positions the needle tip away from the inner sheath surface, resolving sticking issues during endoscope navigation.

Separate localization transducers detect instruments outside the scan plane, resolving visibility gaps without introducing imaging artifacts.

A biopsy needle features a tapered bore and cutting teeth to retain bone specimens during extraction.

A customized guidance template fits over a patient's body to guide surgical devices with high accuracy.

An integrated electroporation probe uses a moveable sleeve to open perforations for fluid injection, reducing insertion sites and patient discomfort.

A trocar system integrates imaging means and a signal transmission device for independent operation.

High-intensity focused ultrasound elevates submucosal tissue via acoustic radiation pressure, eliminating needle trauma and fluid escape during resection.

Segmented bone marrow harvesting needles flex to reach curved regions while reducing cortical wall puncture risks.

Real-time imaging aligns 3D prostate models to guide targeted ablation, reducing healthy tissue damage and treatment time.

Small-gauge hollow needles extract core tissue samples to reduce healing time and scarring while maintaining sample integrity.

A swallowable capsule expands internal mechanisms to deploy collection brushes for tissue sampling.

An autonomous system uses infrared and ultrasound imaging to locate veins, reducing unsuccessful attempts and dependence on skilled technicians.

An endorectal coil uses a deployable spreader to flatten prostate tissue and position conductive elements for magnetic resonance imaging.

A pumping-syringe device with a valve section controls vacuum pressure to draw and expel biological samples without disconnecting from the medical device.

A polymer needle with electrodes detects tissue location via electrical signals.

Irreversible electroporation destroys tumor cells via microsecond electrical pulses, eliminating collateral damage from thermal injury or mechanical trauma.

An insulated drug injection needle uses an exposed metal distal end as an electrode to measure electric potential.

A tissue collection basket filters specimens from body fluids using a porous bottom surface, separating solids while preventing clogging on the separator shelf.

Flexible bladder buffers insufflation gas flow to stabilize surgical tunnel pressure and eliminate distracting pulsations during endoscopic vessel harvesting.

A slotted needle handle mechanism delivers fiducials serially through a single puncture site.

A cannulated fastener uses a directional aperture to draw bone marrow aspirate through its threaded end.

A transcatheter delivery tip deploys barbed arms to seal the septal wall perforation after valve implantation.

Segmented resilient lobes displace catches radially to secure enteral connectors, reducing stoma irritation from high connection forces.

An automated alignment system adjusts an elongated tool's angular orientation using Euclidean vector data extracted from X-ray images.

An expandable mesh cell collection device deploys radially to gather surface cells from body lumens.

A biopsy instrument uses a ring clamp assembly with a movable blade or energy emitter to sever connecting ducts.

Distinct material regions in a segmented cell collection device adapt to varying lumen diameters, resolving accuracy issues from uniform sizing.

A preoperative probe couples a fiber optic sensing head to an ablation tool for simultaneous tumor detection and excision.

Rotating abrasive loops abrade tissue surfaces to dislodge cells, while integrated collector loops capture fragments for reliable sampling without pain.

A core needle biopsy device uses a dedicated piercer and cutter assembly to collect multiple tissue samples in one insertion.

A single-insertion biopsy device collects multiple tissue samples using a shuttle mechanism that transports specimens without needle removal.

A deployment tool with a track, retainer, and slider guides an elongate lead into the substernal space to reduce vascular access complications.