Surgical Needles TRIZ Cases

A beveled front-end loader facilitates prosthetic occluder retrieval through a tapered distal end.

Pneumatic blow-off removes excess silicone before curing to prevent wicking and ensure uniform thickness at the distal tip.

A portable dermatoscope integrates visualization, biopsy, and wound closure functions within a single handheld device.

Segmented lever and push rod mechanisms improve needle manipulation precision while reducing spinal structure damage risks.

Expandable catheter injects ablative fluid around vessel ostia using segmented tubes.

Disposable tissue visualization device integrates illumination and sensors to reduce trauma during minimally invasive procedures.

An amplitude modulated electrosurgical unit varies high and low power mode durations to control RF energy delivery.

Segmented tubular members with biasing springs constrain retraction distance to increase tissue sample quantity and reduce blood contamination.

A quality assurance system monitors electromagnetic sensor positions to assess tracking accuracy during brachytherapy procedures.

A biopsy probe embeds insulated wire electrodes in recessed channels to measure tissue impedance at the distal end.

Offset electrode positioning and segmented nozzle coupling improve smoke capture effectiveness while managing device complexity.

Segmentation and preliminary action resolve the trade-off between swallowability and reliable expansion capability for gastrointestinal cell sampling.

An ultrasound imaging system generates 3D images by stitching probe data with optical fiber and accelerometer sensors, eliminating tedious manual reorientation.

A catheter securement device uses a retainer nose to deflect the external tube toward the skin insertion site for stable positioning.

Probe integrates sensors and treatment tool to locate abnormal tissue dimensions, enabling immediate intervention without displacing measurement elements.

A specialized expanding dilation device creates a stable tissue cavity for precise resection, managing post-coring bleeding via hemostatic agents.

An optical trocar sensor detects instrument movement without mechanical contact, eliminating backlash and friction errors for precise depth measurement.

Segmented multielectrode arrays apply sequential energy to create conformal ablation volumes, resolving the trade-off between lesion size and precision.

A flexible member connects the anvil and cartridge of a surgical stapler, maintaining alignment under compression forces that deform rigid long-thin designs.

A processor detects needle position and calculates trajectory for real-time ablation planning.

A signal processing unit reconstructs output signals from fast-moving electromagnetic sensors using heuristic models.

An adjustable biopsy needle uses an interchangeable insert member to modify the exposed stylet notch length for flexible tissue sampling.

A tubular tissue collection system with a helically wound coil and pull wire mechanism resolves insufficient sample quantities in biliary cancer detection.