Surgical Navigation Systems TRIZ Cases

An adjustable positioning block with an inertial sensor calculates bone alteration parameters, reducing reliance on bulky external tracking systems.

A dual field-of-view surgical imaging system uses a controller to switch between coupled and uncoupled optical assemblies for simultaneous stereoscopic and wide-field views.

A robotic arm controller saves and recalls specific positions for surgical payloads.

A vapor delivery needle injects condensable steam into prostate tissue to shrink the transition zone and improve urine flow.

Pre-cut flexible electrode patches reduce setup time by allowing quick adaptation to patient morphology and integration with navigation devices.

Implanted permanent magnets enable rapid, accurate localization of internal structures without radiation or extensive imaging.

A position detection system adjusts its calculating frequency to maintain measurement accuracy.

Tracking frames and navigation engines calculate leg length, offset, and anterior-posterior changes without establishing a femoral coordinate system.

Merges electromagnetic and electropotential tracking to resolve positioning reliability issues caused by RF interference.

Virtual 3D bone models overlay fluoroscopic images, resolving malalignment risks while minimizing radiation exposure during closed reduction.

A catheter features spatially variable X-ray absorption strength along its longitudinal direction to enable precise tool localization in medical imaging.

Graphical feedback from distal force sensors replaces lost tactile sensation during catheter navigation, reducing tissue damage.

A passive end effector constrains a surgical saw blade to arcuate paths within a cutting plane via a rotational disk mechanism.

Electromagnetic and inertial trackers detect catheter pose to synchronize imaging with cardiac cycles, reducing radiation exposure.

An overlapping LBJ coil marker eliminates orientation-dependent signal variation, enabling accurate tissue localization through narrow gauge needles.

Electronic sensors measure component orientation and display real-time feedback to prevent loosening from misalignment.

Sensors compare measured and expected data to detect endoscope buckling, preventing uncontrollable energy release during minimally invasive procedures.

Selective rendering removes obstructing instruments and non-critical anatomy from the virtual camera view, resolving visual clutter in narrow passageways.

Segmenting the conductive tube along its length enables wireless communication without increasing handle volume.

Segmenting the shaft and adding rotational degrees of freedom resolves alignment conflicts between articulation capability and device complexity.

A basket catheter uses transmitting and receiving coils to detect eddy currents in a conductive plate for deformation sensing.

Segmented outer sleeve isolates electromagnetic position sensor from shape wire deformation, reducing mechanical stress and preventing damage.

Stereoscopic head-mounted displays register virtual drill plans to patient anatomy, eliminating custom surgical guides and reducing procedural complexity.

Rotating a sphere magnet creates time-varying fields that enable millimeter-scale position tracking independent of lighting conditions.

Replacing thermal-sensitive force sensors, an accelerometer on the electrode detects tissue contact via acceleration analysis to eliminate false positives.

Multi-electrode catheters map electrical circuit cores to guide ablation, reducing complications from generalized strategies.

A system determines bendable instrument shape by measuring control element movement amounts and applying kinematic relationships.

Integrated sensors detect drill and patient head angles to correct spatial deviations, reducing surgical time and improving abutment precision.

Piezoelectric actuation drives ultrasonic oscillations to reduce insertion forces and prevent tissue damage.

A navigable surgical instrument system integrates universal styluses and dynamic reference bases for precise 3D tracking during orthopedic procedures.

Flexible circuits connect controllers to actuators in handheld surgical robots.

A control circuit detects articulation state transitions by monitoring distinct magnetic field intensity changes from dual Hall sensors on the clutch assembly.

Modifying the marker array geometry prevents localization camera tracking, avoiding large robotic movements that could harm patients or surgeons.

Dynamic backpressure regulation maintains consistent fluid flow during cardiac ablation, preventing tissue damage and blood clot formation.

A cannula assembly directs a steerable guide wire to emit radiation for internal cavity imaging.

Anchoring a light conductor on the working instrument enables optical position detection, reducing thermal stress and contamination risks.

Integrated illumination guides instrument insertion into body cavities while seals prevent fluid ingress to maintain sterility.

Merging magnetic field detection results with image signals reduces endoscope size and cost by eliminating separate output systems.

A surgical microscope system dynamically adjusts its numerical aperture to match the depth of the surgical site.

An autonomous endoscopic system navigates a protective sheath using magnetic sensors and driving records to optimize movement paths.

Integrating optical sensors into ultrasound probes replaces bulky mechanical trackers, reducing system complexity while maintaining high navigation accuracy.

Color-coded tool illumination tracks spatial position to minimize healthy bone removal during minimally invasive surgery.

Pre-calculated guide lines align scout and stereographic images, resolving measurement precision trade-offs during breast biopsy procedures.

Synchronized pulsed excitation light isolates fluorescent probe signals from ambient operating room illumination, enabling precise cancer tissue visualization.

A catheter system detects phrenic nerve stimulation via impedance changes during pacing currents.

A universal controller manages multiple manipulators through dynamic configuration, reducing system complexity while maintaining control reliability.

Replacing fixed cameras with a portable 3D tracking sensor resolves the trade-off between registration accuracy and system portability in surgical navigation.

A flexible display system overlays in-scale reference images on patient anatomy to visualize catheter placement directly on the body surface.

Composite MRI-visible fiducial markers attach to bone to maintain stable reference frames, preventing brain shift errors during multi-modality imaging.

Intraoperative planning adjustment system acquires dynamic spacing force line data across continuous flexion-extension angles to guide prosthesis positioning.