Novel operation on joint low-temperature plasma bipolar procedures electrodeTechnical field
The present invention relates to Electrosurgical instrument fields, more particularly to a kind of novel operation on joint low-temperature plasmaBipolar operation electrode.
Background technique
Once large-scale use electric knife, electric knife mainly pass through electric current and flow through electrode, people the electrosurgery of early stageWhen body tissue, the high temperature heat that impedance itself generates has the function that tissue treatment.
Present plasma technology has the characteristics of low temperature, just extensive using the Electrosurgical instrument of plasma technologyUsing in joint, ear nose larynx, backbone and beauty treatment.These plasma surgical instruments generate high frequency height using modern electronic technologyThe repetition pulse of pressure, will form in physiological saline, between electrode light-emitting plasma electric discharge, these plasmas include ion,Neutral molecule and atomic radicals.Under strong incentive action, achieve the purpose that tissue cutting, ablation, blood coagulation.
Usually physiological saline used in operation is the sodium chloride solution that concentration is 0.9%, and osmotic pressure is close with blood of human bodySeemingly, the content of sodium is also close with blood plasma.In plasma surgical operation, physiological saline is in addition to maintaining tissue electrolyte balance, clearlyIt bathes a wound, the medium also formed as a kind of plasma exists, and the state of physiological saline plays in plasma surgical operationVital effect.
There is provided it is a kind of can detect automatically during surgery concentration of physiological saline, missing whether bipolar operation electrode become veryIt is necessary.
Summary of the invention
In view of the drawbacks described above of the prior art, physiology salt can be detected automatically during surgery the object of the present invention is to provide a kind ofBipolar operation electrode whether water concentration, missing.
The purpose of the present invention is achieved through the following technical solutions:
A kind of operation on joint low-temperature plasma bipolar procedures electrode, including procedures electrode bar, procedures electrode handle, procedures electrodeCable；Wherein procedures electrode bar includes electrode work pole piece, ceramic head, electrode loop pole bend pipe, electrode loop pole steel pipe, TeflonImperial insulation tube, capacitance type sensor, work polar conductor and coaxial cable；Capacitance type sensor include Teflon capacitance probe withCopper sheet；Procedures electrode handle one end is connect with procedures electrode bar, the other end and procedures electrode cable connection；Procedures electrode cable withThe connection of radio-frequency generator host；Procedures electrode tip is set to one end of procedures electrode bar, and capacitance type sensor is installed on operationProcedures electrode tip rear portion on electrode stem, circuit pole insulating layer are installed on procedures electrode bar；Capacitance type sensor is for automaticDetect the concentration of physiological saline.
Further, procedures electrode tip includes electrode work pole piece, ceramic head and electrode loop pole bend pipe；Circuit poleInsulating layer includes Teflon insulation tube；Electrode work pole piece is installed on ceramic head, and it is extremely curved to be then mounted as a whole on electrode loopGuan Shang, the work polar conductor in procedures electrode cable pass through ceramic head, are welded on electrode work pole piece, work polar conductor and electricityThe weld of pole work pole piece is using Teflon insulation pipe insulation.
Further, electrode loop polar conductor is arranged in procedures electrode handle, and is welded on the steel pipe of electrode loop pole.
Further, coax cable center conductor is removed into 2mm, external shielding layer removes 4mm, while center conductor being welded inOn copper sheet, the copper sheet welded is mounted on Teflon capacitance probe, Teflon capacitance probe and copper sheet constitute capacitance sensingThen the capacitance sensor assembled is installed on the steel pipe of electrode loop pole by device, work polar conductor is popped one's head in across TeflonCenter, and by the electrode loop pole bend pipe assembled on the steel pipe of electrode loop pole.
Further, the detection of physiological saline state is the principle based on capacitance detecting, plasma operation pulse interval,Radio-frequency generator generates the square-wave signal of 16KHz, passes through 50 Ω characteristic impedance transmission line couplings in operation cable to the handThe capacitance sensor installed on art electrode stem, when the procedures electrode is placed in physiological saline, or when being placed in air, high frequencyGenerator is detected and is judged to capacitance, and is compared with known data value, to obtain current procedure electrode instituteLocate the state of position physiological saline.
Compared with the existing technology, the features of the present invention and progress are as follows:
Operation on joint of the invention is connected to radio-frequency generator by special connector with low-temperature plasma bipolar procedures electrode, highFrequency generator host exports the high-frequency and high-voltage repetition pulse of 100KHz-1MHz, radio-frequency current working electrode and loop electrode itBetween generate the electric field of high-frequency alternately variation, have the function that tissue gasification, cutting, ablation, shrinkage, hemostasis, reparation.The detection of physiological saline state is the principle based on capacitance detecting, when the procedures electrode is placed in physiological saline (0.9% chlorineChange sodium solution) when, or when being placed in air, radio-frequency generator is detected and is judged to capacitance, and with known data valueIt is compared, to obtain the state of current procedure electrode present position physiological saline.Operation on joint low temperature of the invention etc.Whether resin bipolar procedures electrode realizes during surgery detection concentration of physiological saline automatically and missing, guarantee the safety of operation.
Detailed description of the invention
Fig. 1: the structural front view of novel operation on joint low-temperature plasma bipolar procedures electrode of the invention；
Fig. 2: the structure left view of novel operation on joint low-temperature plasma bipolar procedures electrode of the invention；
Fig. 3: procedures electrode tip partial enlargement diagram of the invention；
Fig. 4: the capacitance sensor sectional view being installed on electrode stem of the invention；
Fig. 5: the sectional view of procedures electrode handle of the invention；
Fig. 6: radio-frequency generator capacitance detecting functional block diagram of the invention.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
As shown in Figs. 1-5, a kind of novel operation on joint low-temperature plasma bipolar procedures electrode, including procedures electrode bar1, procedures electrode handle 2, procedures electrode cable 3；Wherein procedures electrode bar 1 includes electrode work pole piece 4, ceramic head 5, and electrode returnsRoad pole bend pipe 6, electrode loop pole steel pipe 7, Teflon insulation tube 8, Teflon capacitance probe 9, copper sheet 10, work polar conductor 11 withAnd coaxial cable 12.2 one end of procedures electrode handle is connect with procedures electrode bar 1, and the other end is connect with procedures electrode cable 3；HandArt electrode cable 3 is connect with radio-frequency generator host；Procedures electrode tip is set to one end of procedures electrode bar 1, and condenser type passesSensor is installed on procedures electrode tip rear portion on procedures electrode bar 1, and circuit pole insulating layer is installed on procedures electrode bar 1.
Procedures electrode tip includes electrode work pole piece 4, ceramic head 5 and electrode loop pole bend pipe 6；Capacitive sensingDevice includes Teflon capacitance probe 9 and copper sheet 10；Circuit pole insulating layer includes Teflon insulation tube 8；Electrode work pole piece 4 is installedIn on ceramic head 5, being then mounted as a whole on electrode loop pole bend pipe 6, the work polar conductor 11 in procedures electrode cable 3 is passed throughCeramic head 5 is welded on electrode work pole piece 4, and work polar conductor 11 and the weld of electrode work pole piece 4 are exhausted using TeflonEdge pipe 8 insulate, and guarantees the insulation effect of procedures electrode.
Electrode loop polar conductor is arranged in procedures electrode handle 2, and is welded on electrode loop pole steel pipe 7.
12 center conductor of coaxial cable is removed into 2mm, external shielding layer removes 4mm, while center conductor is welded in copper sheetOn 10, the copper sheet 10 welded is mounted on Teflon capacitance probe 9, Teflon capacitance probe 9 and copper sheet 10 constitute capacitorThen the capacitance sensor assembled is installed on electrode loop pole steel pipe 7 by sensor, work polar conductor 11 is passed through Teflon9 centers of dragon probe, and by the electrode loop pole bend pipe 6 assembled on electrode loop pole steel pipe 7.
The procedures electrode is connected to radio-frequency generator by special connector, and radio-frequency generator host exports 100KHz-The high-frequency and high-voltage repetition pulse of 1MHz, radio-frequency current generates a high-frequency between working electrode and loop electrode alternately to be changedElectric field, due to welding tip power line height concentrate, density it is big, alternately variation electric field make physiological saline and tissueIn blood, sodium chloride (NaCl) molecule dielectric in mucous membrane and soft tissue be excited into plasmoid, then by plasmaIn the particle of high velocity ionization crush the strand of organic molecule in tissue, separate molecule with molecule, molecule withMolecule is reassembled into the low-molecular-weight gas such as H2, O2, reaches the work to tissue gasification, cutting, ablation, shrinkage, hemostasis, reparationWith.
The detection of physiological saline state is the principle based on capacitance detecting, and in the pulse interval of plasma operation, height takes place frequentlyRaw device generates the square-wave signal of 16KHz, passes through 50 Ω characteristic impedance transmission line couplings in operation cable to the procedures electrodeThe capacitance sensor installed on bar 1 when the procedures electrode is placed in physiological saline (0.9% sodium chloride solution), or is placed inWhen in air, radio-frequency generator is detected and is judged to capacitance, and is compared with known data value, is worked as to obtainThe state of preceding procedures electrode present position physiological saline.
But those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate thisInvention, and be not used as limitation of the invention, as long as in spirit of the invention, to embodiment described aboveVariation, modification will all fall within the scope of claims of the present invention.