Surgical Instruments Using Microwaves TRIZ Cases

An unbalanced dipole with a choke, extended dielectric layer, and coolant flow maintains impedance matching as tissue properties change.

A planar microstrip transformer matches a 50Ω feed line to a low-impedance electrosurgical cable, cutting reflections, power loss, and heating.

Magnetic alignment guides pogo pins into proper contact and blocks misaligned electrical connection that could damage the microwave generator or instrument.

Grounded proximal and distal absorbers around a DC block cut microwave radiation interference and protect remote temperature probe accuracy.

Internal ceramic cooling channels remove heat from a microwave ablation radiator to stabilize dielectric behavior and tissue heating.

A triaxial microwave probe shapes bidirectional planar heating in the bone growth plate to improve growth arrest while reducing pain and complications.

A grounded DC block patient isolator uses separated high-loss cavity absorbers to reduce radiation interference and protect sensor accuracy.

Conductive polymer electrodes prevent tissue overheating and maintain ECG signal integrity during ablation procedures.

Linear displacement mechanism adjusts flexible polymer electrode length to control lesion size and type during ablation procedures.

Impedance matching structure connects coaxial cable to half-wavelength antenna, eliminating baluns to reduce unwanted tissue heating.

Segmented LED arrays deliver uniform 635 nm red light to reduce subcutaneous lipid content without causing tissue damage.

A radiating tip supports resonance at multiple microwave frequencies to deliver electromagnetic energy into biological tissue.

An intermediary switching mechanism directs microwave energy to a resistive load, allowing surgeons to terminate power delivery without assistant assistance.

Dynamic frequency sweeping eliminates cable phase effects and VSWR variations, ensuring accurate reflected power monitoring in medical applications.

A cooled microwave denervation catheter circulates fluid in a balloon to manage thermal energy during nerve ablation.

A microwave providing device intermittently radiates microwaves to extend the coagulation range of treatment target tissue.

A microwave ablation probe uses a crimped choke to block back current reflections from the antenna.

Customizable electromagnetic shielding reflectors attach to ablation antenna probes to direct radiation toward target tissue volumes.

Segmented inflow and outflow chambers in the antenna hub prevent fluid leakage between cooling paths, maintaining precise flow control.

A microwave ablation antenna uses a choke assembly to enhance impedance matching and energy transfer efficiency.

A piezoelectric transducer detects coolant fluid flow through the microwave ablation probe path to generate a control signal.

A thermal feedback control system regulates coolant flow to a fluid-cooled antenna assembly using real-time temperature sensors.