Surgical Needles TRIZ Cases

An implant system secures to bone via threads and extends a needle into an anatomical cavity for cerebrospinal fluid drainage.

A jointed biopsy needle uses a curved guide sleeve and flexible force transmission element to actuate the cutting plunger.

A guide instrument system controls insertion depth and trajectory for surgical access devices.

A needle assembly uses pliable tissue receivers to pierce the parietal pleura without extending past the outer shaft distal end.

Segmented guide extension catheters stabilize positioning during cardiac interventions by nesting within the main guide catheter.

A puncture guiding unit aligns an optical target device using planning data to position medical instruments relative to a patient's skin surface.

A needle locating device aligns reference indicators with anatomical structures to guide precise insertion.

Actuable struts and cutting blades on a catheter tip create enlarged tissue openings, enabling reliable sealing of anatomical spaces without lumen stricture.

A half cannula biopsy needle uses a semi-cylindrical inner member to capture tissue cores within a dedicated chamber.

A stabilized sleeve assembly anchors within a vessel passage to guide a blade for precise occlusion penetration.

Expandable positioning elements center the catheter to deliver uniform steam ablation despite patient movement.

A medical extraction device anchors a pacemaker lead internally while applying vibrations to facilitate removal.

A viscoelastic polymer film with controlled mechanical properties secures medical articles to patient skin.

A rotating head drives an elastic holding element along a central axis to insert the infusion set.

A puncture apparatus uses vacuum insertion members to draw tissue into contact for minimally invasive sling implantation.

Nested connectors secure catheters within elongate members, resolving profile trade-offs during hemodialysis insertion.

Passive diaphragm system creates positive pressure via tubular pin deformation to eliminate manual piston strain.

Segmented dilators expand collapsed tissue to restore tract patency without surgical intervention.

A notched biopsy needle with a proximal cutting edge collects larger intact cell samples, resolving the trade-off between invasiveness and sample integrity.

An inner tube advances within an outer cannula to collapse a leg, retaining tissue samples without mechanical damage that compromises sample quality.

A foldable implant transforms into radial loops to distribute spinal forces.

A skin treatment apparatus uses real-time temperature feedback to dynamically adjust applicator speed and energy delivery for safe personal use.

A tissue removal device with dual incision knives enables cutting at various angles without replacing the tool.

Rotating tissue sample holder indexes bulk and pathology chambers for secure storage.

A rectal swab collects cell samples for mast cell examination to identify precancerous lesions.

Expandable anchors secure microdevices for therapy but hinder removal; dynamic collapse enables extraction via a retrieval sheath.

A radionuclide method positions decay chain nuclei within tumors to deliver alpha particles.

Segmenting electrodes and using automatic impedance matching resolves uneven current distribution while protecting the epidermis.

A biopsy needle with a curved inner stylet collects larger tissue samples in fewer insertions.

A loading device guides catheter tethers through a leadless pacemaker attachment feature using a funneling structure and retention mechanism.

Micro-CT and spectroscopy identify tissue types within biopsy samples, resolving the trade-off between diagnostic accuracy and tissue integrity.

A guide device with a shape sensing component determines instrument position and orientation on the subject surface.

A protocol-driven ultrasound system acquires and selects cardiac images based on predefined sequences.

A side-firing laser device integrated into a liposuction cannula emits energy to lyse fat cells, reducing bleeding risks from mechanical cutting.

Stepped antenna geometry with dielectric filling improves impedance matching, reducing power attenuation for flexible venous treatment.

An integrated reduced pressure dressing combines an internal pump and absorbent layer to deliver therapy directly at the wound site.

A photoacoustic measurement apparatus uses a sub-light source to detect failures in the light guide member and absorption unit.

Segmented reservoirs in a biopsy container isolate tissue samples, preventing mixing and enabling precise identification during diagnostic workflows.

Steerable biopsy needle uses embedded optical fibers to detect shape and position during medical procedures.

Segmented lumens allow needle insertion to clear blockages without device removal, maintaining suction stability and reducing brain trauma.

Real-time trajectory updating resolves the contradiction between insertion accuracy and adaptability in automated medical instrument steering.

Segmented cannulas drain left atrial volume directly to the aorta, bypassing ECMO complexity.

A liquid stylet apparatus uses a transparent tube and indicator to provide real-time visual feedback during medical procedures.

A single incision approach routes S-ICD leads through intercostal gaps to position electrodes and the pulse generator subcutaneously.

A microwave energy delivery device uses integrated coolant channels to manage thermal loads during tissue ablation procedures.

A flared truncated cone tube design ensures continuous gas ejection during surgical dissection procedures.

Contoured ultrasonic sonotrodes improve cortical bone cutting while reducing heat injury risks.

A radially expandable loudspeaker-shaped stent with a reefing thread system enables precise tissue resection through small incisions.