Specific embodiment
Exemplary embodiments of the present invention are introduced referring now to the drawings, however, the present invention can use many different shapesFormula is implemented, and is not limited to the embodiment described herein, and to provide these embodiments be at large and fully discloseThe present invention, and the scope of the present invention is sufficiently conveyed to person of ordinary skill in the field.Show for what is be illustrated in the accompanying drawingsTerm in example property embodiment is not limitation of the invention.In the accompanying drawings, identical cells/elements use identical attachedIcon note.
Unless otherwise indicated, term (including scientific and technical terminology) used herein has person of ordinary skill in the fieldIt is common to understand meaning.Further it will be understood that with the term that usually used dictionary limits, should be understood as and itsThe context of related fields has consistent meaning, and is not construed as Utopian or too formal meaning.
Fig. 1 is the functional schematic according to the plasma therapeutic apparatus 100 of the preferred embodiment for the present invention.Plasma therapeutic apparatus100 can be used in cutting, ablation and the solidification and hemostasis of duodenofiberscope.In addition, plasma therapeutic apparatus 100 can also be enoughCutting, ablation, solidification and the hemostasis of soft tissue in the surgical operations such as joint, backbone, skin, ear nose larynx.The application it is equal fromSub- therapeutic equipment 100 is to belong to brought into temporary contact within 24 hours, according to time of contact classification, according to contact human body property using the timeClassification belongs to external access instrument (with tissue/bone/dentine) and belongs to active doctor according to the classification of medical instrument structure featureTreat instrument.Attachment bipolar operation electrode (incision knife) head of plasma therapeutic apparatus 100 belongs to disposable sterilized product.
Plasma therapeutic apparatus 100 uses bipolar scheme, and its working frequency is 110kHz.Plasma therapeutic apparatus 100 is logicalCross cutting, ablation, solidification and hemostasis of the plasma technology realization to soft tissue in the operation such as ear nose larynx.When work, plasma is controlledInstrument 100 is treated by physiological saline as conduction liquid, forms a thin layer when activating between emission electrode and loop electrode.When it is equal fromWhen sub- therapeutic equipment 100 gives enough energy (voltage), physiological saline translates into the gas being made of charged particle of energizingBody layer (plasmasphere).That is, plasma therapeutic apparatus 100 using energy excitation conducting medium (for example, physiological saline) generate etc. fromDaughter, and tissue element key is interrupted by the energy of plasma.The energy of plasma is by protein and otherDirect Pyrolysis is at O2, CO2, N2Equal gases, so that the vaporization completed to tissue is cut.When the work knife to plasma therapeutic apparatus 100For head when giving low-voltage, electric field requires lower than the thresholding for generating plasmasphere and generates tissue resistance heat, thus by tissue intoRow ablation solidification and hemostasis.
As shown in Figure 1, the functional architecture of plasma therapeutic apparatus 100 includes: primary control program, alarm unit, interface listMember, output control unit, bipolar operation electrode (incision knife) interface, bipolar operation electrode (incision knife), floor push, foot control connectMouth, dropping liquid control valve and dropping liquid control valve interface.Wherein, primary control program, alarm unit, boundary element, output control, are bipolarProcedures electrode interface, foot control interface and dropping liquid control valve interface belong to the software section of plasma therapeutic apparatus 100.Plasma is controlledThe function introduction for treating the section components of instrument 100 is as shown in table 1,
The function introduction of 1 section components of table
Preferably, floor push can control the operating mode of plasma therapeutic apparatus 100.The work of plasma therapeutic apparatus 100Operation mode is divided into cut mode and coagulation mode.The waterproofing grade of floor push is waterproofing grade standard IPX8, and rides and openClose is that electric pedal switchs.
Preferably, the yellow pedal of floor push corresponds to cut mode, and the gear range of cut mode is 1 to 9Shelves.That is, plasma therapeutic apparatus 100 enters cut mode when trampling the yellow pedal of floor push.The gear tune of cut modeSection mode are as follows: (or manually adjusted on host panel yellow in the state of being adjusted to cut mode by dark buttons on floor pushColor button) it is adjusted.Cutting gear can choose any one shelves in from 1 to 9 grade.Wherein, gear is higher, and output voltage is got overGreatly.In cut mode, 1 to 9 grade of output voltage is as shown in table 2:
Output gear in 2 cut mode of table
Preferably, the blue pedal of floor push corresponds to coagulation mode, and the gear range of coagulation mode is 1 to 5Shelves.That is, plasma therapeutic apparatus 100 enters coagulation mode when trampling the blue pedal of floor push.The gear tune of coagulation modeSection mode are as follows: (cut mode and coagulation mode can be switched by mode key) by blue pedal in the state of being adjusted to coagulation modeUpper dark buttons (or manually adjusting host panel blue buttons up and down) are adjusted.When foot-operated dark buttons, blood coagulation gear canTo select any one shelves in from 1 to 5 grade, middle gear more high output voltage is bigger.When needing to carry out blood coagulation in clinical useWhen, it depresses blue pedal and carries out blood coagulation.In coagulation mode, 1 to 5 grade of output voltage is as shown in table 3:
Output gear in 3 coagulation mode of table
Preferably, foot control interface is used to receive the control instruction of floor push, and the control instruction is transmitted to masterControl program.Wherein, control instruction be binary group<mode, power>.Mode includes: cut mode and coagulation mode.In blanking punchIn formula, power includes 9 gears, and in coagulation mode, and power includes 5 gears.
Preferably, primary control program carries out parsing to the control instruction and when the control instruction indicates first modeFirst mode instruction is generated, is calculated according to present impedance and the control instruction for the output power under first mode, by theIt is single that one mode instruction and first voltage associated with the output power under first mode instruction are sent to output controlMember.Wherein, initial present impedance is zero, i.e., when the booting of plasma therapeutic apparatus 100 is operated, the present impedance of default isZero.The primary control program carries out parsing to the control instruction and generates second when the control instruction indicates second modeMode instruction calculates for the output power under second mode according to present impedance and the control instruction, second mode is referred toIt enables and second voltage associated with the output power under second mode instruction is sent to output control unit.Wherein instituteStating present impedance includes high impedance, middle impedance and Low ESR (0 impedance is Low ESR).Preferably, according to present impedance and describedIf it is high impedance and the control instruction that control instruction calculating, which includes: present impedance for the output power under first mode,It indicates the 2nd grade under first mode, then sets the 4th grade for the output power under first mode；If present impedance is middle resistanceThe 2nd grade under the anti-and described control instruction instruction first mode, then the 3rd grade is set by the output power under first mode；It, will be under first mode and if present impedance is Low ESR and the control instruction indicates the 2nd grade under first modeOutput power be set as the 2nd grade.Preferably, it is calculated according to present impedance and the control instruction under second modeIf it is that high impedance and the control instruction indicate the 2nd grade under second mode that output power, which includes: present impedance, by theOutput power under two modes is set as the 4th grade；If present impedance is middle impedance and the control instruction indicates the second mouldThe 2nd grade under formula, then the 3rd grade is set by the output power under second mode；And if present impedance be Low ESR andThe 2nd grade under the control instruction instruction second mode, then the 2nd grade is set by the output power under second mode.Preferably,When the output power being calculated is more than the highest gear in first mode or second mode, using highest gear as realityOutput power.
Preferably, output control unit is used to receive first mode instruction and first voltage instruction from the primary control program,And first mode instruction and first voltage instruction are transmitted to bipolar operation electrode interface, and from bipolar operation electrodeThe present impedance of interface target contact jaw and the present impedance is sent to the primary control program.And the outputControl unit from the primary control program receive second mode instruction and second voltage instruction, and by the second mode instruction andSecond voltage instruction is transmitted to bipolar operation electrode interface.
Preferably, bipolar operation electrode interface is used to receive the power indication of primary control program and sends out the power indicationBipolar operation electrode is given, and the real-time impedance of bipolar operation electrode is measured and is passed through the real-time impedance defeatedControl unit passes to primary control program out.
Preferably, bipolar operation electrode from the bipolar operation electrode interface first mode in response to instructing and firstVoltage instruction, into first mode: passing through emission electrode of the conducting medium at the target contact jaw of the bipolar operation electrodeCircuit activation is carried out between loop electrode to form thin layer, applies first voltage between emission electrode and loop electrode, makeIt obtains the conducting medium to reach the first temperature and be converted into plasmasphere, to utilize electric energy excitation conducting medium generation etc.Gas ions, and cutting is vaporized to objective body based on the RF energy of plasma.In response to electric from the bipolar surgerySecond instruction of pole interface and second voltage instruction, the bipolar operation electrode enter second mode: applying second voltageThe target contact jaw of the bipolar operation electrode is remained second temperature, so that objective body is carried out ablation solidification.
Preferably, alarm unit is used for when receiving alarm signal, passes through auditory tone cues, text prompt and/or instructionLamp, which is shown, alarms.Alarm signal wherein is sent to primary control program after the bipolar operation electrode detects operation troubles,Alarm signal is sent to the alarm unit by the primary control program.
Preferably, boundary element, the operating status for low-temperature plasma incision knife surgery systems described in real-time display.
Preferably, dropping liquid control valve is instructed for the conducting medium input based on the primary control program to bipolar operation electrodeThe conducting medium is inputted, wherein the current surplus of conducting medium described in the bipolar operation electrode real-time measurement and will be describedCurrent surplus is sent to primary control program, the primary control program be based on the current surplus determine whether to generate the conducting medium it is defeatedEnter instruction and conducting medium input instruction is sent to dropping liquid control after the conducting medium input instructs determining to generateValve processed.Preferably, dropping liquid control valve interface is for realizing the two-way communication between dropping liquid control valve and primary control program.
Preferably, the emission electrode at bipolar operation electrode tip catheter, plasmasphere, loop electrode and target contactEnd forming circuit.In cut mode, the operating temperature of bipolar operation electrode is 35 to 40 DEG C, and the work of conventional electrosurgical knifeTemperature is 350 to 700 DEG C.The thermal break-through distance of bipolar operation electrode than the thermal break-through of conventional electrosurgical knife apart from small, wherein cuttingIt cuts the thermal break-through distance that the thermal break-through distance in mode is less than or equal in 150 microns and coagulation mode and is less than or equal to 200Micron, and the thermal break-through of conventional electrosurgical knife distance is greater than 9000 microns.
100 working principle of plasma therapeutic apparatus is effect of plasma radiofrequency ablation at low temperature.Energy is generated using bipolar cutter head, will be given birth toReason salt water is converted into plasma thin layer, dissociates the molecular link that cell component is constituted in target tissue, causes tissue coagulation downright bad,Form the effect of ablation or cutting.Due to working at relatively low temperature, electric knife is cut to week than the high frequency that tradition usesThe thermal damage of side texture is minimized degree.Target volume can be made to reduce in 35 DEG C or so operating temperatures, it is micro- in target tissueVessel closure cuts off lesion.Its low temperature and tissue volume reduction Ablation characteristic, more common Single-pole electric knife is with more shortening post-operative recoveryTime mitigates the advantages of postoperative pain and reduction expenses of surgical treatment.Wherein, plasma therapeutic apparatus and common high frequency cut electric knifeTemperature it is more as shown in table 4:
Table 4
Cutter head ambient temperature (is detailed in isolated experiment research tissue thermal damage to report plasma therapeutic apparatus lower than 70 DEG C at workAccuse), operating temperature is lower compared with traditional common high frequency cutting electric knife (100~150 DEG C of high temperature), although low temperature etc.The treatment temperature counterpart tissue of ion knife still falls within high temperature, after histocyte is influenced by this temperature, equally will appear electric knife and cutsIt cuts and histone is caused to be denaturalized, especially after certain time, can also cause thermal damage to tissue.And histiocytic denaturationNecrosis is the process gradually developed, therefore after the operation of some patientss row low-temperature plasma, the swelling of art area, postoperative pain etc. are anti-Electric knife response light should be cut unlike high frequency.Compared with damage thermal damage's depth of plasma therapeutic apparatus and common high frequency cutting electric knife asShown in the following table 5:
Table 5
| Thermal damage's depth when cutting | Thermal damage's depth when blood coagulation |
| Plasma therapeutic apparatus | 150 microns of average value | 200 microns of average value |
| High frequency cuts electric knife | 1.23±0.24mm | 1.37±0.26mm |
Since each operating time has differences so plasma therapeutic apparatus is in isolated experiment research tissue thermal damage reportIn selected maximum operating time, cut by the plasma therapeutic apparatus and the high frequency of normal use that compare visible maximum operating timeElectric knife heat waste depth.Therefore the heat waste depth of the plasma therapeutic apparatus of normal use should cut electric knife heat waste depth lower than high frequency.
Fig. 2 is the major part schematic diagram according to the plasma therapeutic apparatus 200 of the preferred embodiment for the present invention.Such as Fig. 2 instituteShow, the major part of plasma therapeutic apparatus 200 includes: bipolar operation electrode interface 201, dropping liquid control valve interface 202, tramples outClose interface 203, display screen 204, mainboard 205, loudspeaker 206, front panel 207, trouble lamp 208, lower die 209, upper mold 210,Power module 211, dropping liquid control valve 212 and fan 213.
Preferably, trample switch interface 203 is used to receive the instruction of floor push, floor push and can control etc. fromThe operating mode of sub- therapeutic equipment 200.The operating mode of plasma therapeutic apparatus 200 is divided into cut mode and coagulation mode.It is foot-operated to openThe waterproofing grade of pass is waterproofing grade standard IPX8, and floor push is electric pedal switch.
Preferably, the yellow pedal of floor push corresponds to cut mode, and the gear range of cut mode is 1 to 9Shelves.That is, plasma therapeutic apparatus 200 enters cut mode when trampling the yellow pedal of floor push.The gear tune of cut modeSection mode are as follows: (or manually adjusted on host panel yellow in the state of being adjusted to cut mode by dark buttons on floor pushColor button) it is adjusted.Cutting gear can choose any one shelves in from 1 to 9 grade.Wherein, gear is higher, and output voltage is got overGreatly.
Preferably, the blue pedal of floor push corresponds to coagulation mode, and the gear range of coagulation mode is 1 to 5Shelves.That is, plasma therapeutic apparatus 200 enters coagulation mode when trampling the blue pedal of floor push.The gear tune of coagulation modeSection mode are as follows: (cut mode and coagulation mode can be switched by mode key) by blue pedal in the state of being adjusted to coagulation modeUpper dark buttons (or manually adjusting host panel blue buttons up and down) are adjusted.When foot-operated dark buttons, blood coagulation gear canTo select any one shelves in from 1 to 5 grade, middle gear more high output voltage is bigger.When needing to carry out blood coagulation in clinical useWhen, it depresses blue pedal and carries out blood coagulation.
Preferably, trample switch interface 203 is used to receive the control instruction of floor push, and the control instruction is turnedIssue primary control program.Wherein, control instruction be binary group<mode, power>.Mode includes: cut mode and coagulation mode.?In cut mode, power includes 9 gears, and in coagulation mode, and power includes 5 gears.
Preferably, mainboard 205 stores primary control program in the firmware for accommodating firmware.Wherein, primary control program is to describedControl instruction carries out parsing and generates first mode instruction when the control instruction indicates first mode, according to present impedanceCalculate with the control instruction for the output power under first mode, by first mode instruct and under the first modeOutput power associated first voltage instruction be sent to output control unit.Wherein, initial present impedance is zero, that is, is existedWhen the booting of plasma therapeutic apparatus 200 is operated, the present impedance of default is zero.The primary control program to the control instruction intoRow parsing and the generation second mode instruction when the control instruction indicates second mode, according to present impedance and the controlInstruction is calculated for the output power under second mode, by second mode instruct and with the output power under the second modeAssociated second voltage instruction is sent to output control unit.Wherein the present impedance includes high impedance, middle impedance and lowImpedance (0 impedance is Low ESR).Preferably, it is calculated according to present impedance and the control instruction for the output under first modeIf power includes: present impedance for high impedance and the control instruction indicates the 2nd grade under first mode, by the first mouldOutput power under formula is set as the 4th grade；If present impedance is middle impedance and the control instruction indicates under first modeThe 2nd grade, then set the 3rd grade for the output power under first mode；And if present impedance is Low ESR and describedControl instruction indicates the 2nd grade under first mode, then sets the 2nd grade for the output power under first mode.Preferably, according toIf present impedance and the control instruction calculate for the output power under second mode include: present impedance be high impedance simultaneouslyAnd the 2nd grade under the control instruction instruction second mode, then the 4th grade is set by the output power under second mode；IfPresent impedance is middle impedance and the control instruction indicates the 2nd grade under second mode, then by the output work under second modeRate is set as the 3rd grade；And if present impedance is Low ESR and the control instruction indicates the 2nd grade under second mode,Then the 2nd grade is set by the output power under second mode.Preferably, when the output power being calculated is more than first modeOr when highest gear in second mode, using highest gear as real output.
Preferably, output control unit (being not shown in Fig. 2) be used for from the primary control program receive first mode instruction andFirst voltage instruction, and first mode instruction and first voltage instruction are transmitted to bipolar operation electrode interface 201, withAnd the present impedance of target contact jaw is received from bipolar operation electrode interface 201 and the present impedance is sent to the masterControl program.And the output control unit receives second mode instruction and second voltage instruction from the primary control program, andSecond mode instruction and second voltage instruction are transmitted to bipolar operation electrode interface 201.
Preferably, bipolar operation electrode interface 201 is used to receive the power indication of primary control program and refers to the powerShow and be sent to bipolar operation electrode, and the real-time impedance of bipolar operation electrode is measured and leads to the real-time impedanceIt crosses output control unit and passes to primary control program.
Preferably, bipolar operation electrode (not shown) is in response to receiving the from the bipolar operation electrode interface 201One mode instruction and first voltage instruction, connect into first mode: the target by conducting medium in the bipolar operation electrodeCircuit activation is carried out between emission electrode and loop electrode at contravention to form thin layer, between emission electrode and loop electrodeApply first voltage, so that the conducting medium reaches the first temperature and is converted into plasmasphere, to swash using electric energyIt sends out conducting medium and generates plasma, and cutting is vaporized to objective body based on the RF energy of plasma.In response toFrom the bipolar operation electrode interface 201 received second instruction and second voltage instruction, the bipolar operation electrode enters theTwo modes: apply second voltage the target contact jaw of the bipolar operation electrode is remained second temperature, thus by targetBody carries out ablation solidification.
Preferably, trouble lamp 208 is used for when receiving alarm signal, is shown and is alarmed by indicator light.ItsIn after the bipolar operation electrode detects operation troubles to primary control program send alarm signal, the primary control program will alarmSignal is sent to the trouble lamp 208.Loudspeaker 206 are used for when receiving alarm signal, are alarmed by sound.ItsIn after the bipolar operation electrode detects operation troubles to primary control program send alarm signal, the primary control program will alarmSignal is sent to the loudspeaker 206.
Preferably, operating status of the display screen 204 for low-temperature plasma incision knife surgery systems described in real-time display.
Preferably, dropping liquid control valve 212 is instructed for the conducting medium input based on the primary control program to bipolar surgeryElectrode inputs the conducting medium, wherein the current surplus of conducting medium described in the bipolar operation electrode real-time measurement and generalThe current surplus is sent to primary control program, and the primary control program is based on the current surplus and determines whether to generate conductive JieMatter input, which instructs and the conducting medium is inputted instruction after determining the generation conducting medium input instruction, is sent to dropHydraulic control valve 212.Preferably, dropping liquid control valve interface 202 is for realizing two-way between dropping liquid control valve 212 and primary control programCommunication.
Preferably, the application uses double mode liquid outlet: 1, titration mode, i.e., a drop as the mode of infusionThe supply of one drop；And 2, continuous supply model, i.e., the mode of liquid flow without interruption.Bipolar operation electrode interface (incision knifeInterface) it is connect by patch with the bipolar electrode socket connector (incision knife connector) of Fig. 5 as described below, dropping liquid control valve connectsMouth is connected by the fluid-through chamber of connecting tube and Fig. 5.Floor push mouth is connect by connecting line with external foot pedal, for controllingThe supply and disconnection of energy and dropping liquid.When foot pedal is stepped on, energy and dropping liquid supply；When foot pedal unclamps, energy and dropLiquid disconnects.
Preferably, the emission electrode at bipolar operation electrode tip catheter, plasmasphere, loop electrode and target contactEnd forming circuit.In cut mode, the operating temperature of bipolar operation electrode is 35 to 40 DEG C, and the work of conventional electrosurgical knifeTemperature is 350 to 700 DEG C.The thermal break-through distance of bipolar operation electrode than the thermal break-through of conventional electrosurgical knife apart from small, wherein cuttingIt cuts the thermal break-through distance that the thermal break-through distance in mode is less than or equal in 150 microns and coagulation mode and is less than or equal to 200Micron, and the thermal break-through of conventional electrosurgical knife distance is greater than 9000 microns.
Preferably, upper mold 210 and lower die 209 protect mainboard by way of combination.Fan 213 is used to radiate, andPower module 211 is used to provide electric power for plasma therapeutic apparatus 200.Front panel 207 is for displaying data and operating control.
Fig. 3 is the structural schematic diagram according to the low-temperature plasma incision knife surgery systems 300 of the preferred embodiment for the present invention.Low-temperature plasma incision knife surgery systems 300 can be used in cutting, ablation and the solidification and hemostasis of duodenofiberscope.In addition,Low-temperature plasma incision knife surgery systems 300 can also be used to soft tissue in the surgical operations such as joint, backbone, skin, ear nose larynxCutting, ablation, solidification and hemostasis.The low-temperature plasma incision knife surgery systems 300 of the application using the time be 24 hours withIt is interior, belong to brought into temporary contact according to time of contact classification, belong to according to contact human body qualitative classification external access instrument (with tissue/Bone/dentine) and according to medical instrument structure feature classification belong to active medical instrument.
Low-temperature plasma incision knife surgery systems 300 use bipolar scheme, and its working frequency is 110kHz.Low temperature etc.Ion incision knife surgery systems 300 realize cutting, ablation, the solidification to soft tissue in the operation such as ear nose larynx by plasma technologyWith hemostasis.When work, low-temperature plasma incision knife surgery systems 300, as conduction liquid, activate emission electrode by physiological salineA thin layer is formed when between loop electrode.When low-temperature plasma incision knife surgery systems 300 give enough energy (electricityPressure) when, physiological saline translates into the gas blanket being made of charged particle of energizing (plasmasphere).That is, low-temperature plasmaIncision knife surgery systems 300 using energy excitation conducting medium (for example, physiological saline) generate plasma, and by etc. fromThe energy of daughter interrupts tissue element key.The energy of plasma is by protein and other Direct Pyrolysis at O2, CO2, N2Equal gases, so that the vaporization completed to tissue is cut.When the work cutter head to plasma therapeutic apparatus 100 gives low-voltage, electricityField requires lower than the thresholding for generating plasmasphere and generates tissue resistance heat, so that tissue be carried out to melt solidification and hemostasis.
As shown in figure 3, low-temperature plasma incision knife surgery systems 300 include: input unit 301, control unit 302, connectMouth unit 303, plasma cell 304, alarm unit 305, dropping liquid input unit 306 and display unit 307.Preferably, defeatedEntering unit 301 is, for example, floor push, and floor push can control 300 Working mould of low-temperature plasma incision knife surgery systemsFormula.The operating mode of low-temperature plasma incision knife surgery systems 300 is divided into cut mode and coagulation mode.The waterproof of floor pushGrade is waterproofing grade standard IPX8, and floor push is electric pedal switch.
Preferably, the yellow pedal of floor push corresponds to cut mode, and the gear range of cut mode is 1 to 9Shelves.That is, low-temperature plasma incision knife surgery systems 300 enter cut mode when trampling the yellow pedal of floor push.CuttingThe gear regulative mode of mode are as follows: (or manually adjusted in the state of being adjusted to cut mode by dark buttons on floor pushYellow button on host panel) it is adjusted.Cutting gear can choose any one shelves in from 1 to 9 grade.Wherein, gear is got overHeight, output voltage are bigger.
Preferably, the blue pedal of floor push corresponds to coagulation mode, and the gear range of coagulation mode is 1 to 5Shelves.That is, low-temperature plasma incision knife surgery systems 300 enter coagulation mode when trampling the blue pedal of floor push.Blood coagulationThe gear regulative mode of mode are as follows: (cut mode and blood coagulation mould can be switched by mode key in the state of being adjusted to coagulation modeFormula) it is adjusted by dark buttons on blue pedal (or manually adjusting host panel blue buttons up and down).Foot-operated dark buttonsWhen, blood coagulation gear can choose any one shelves in from 1 to 5 grade, and middle gear more high output voltage is bigger.When in clinical useWhen needing to carry out blood coagulation, depresses blue pedal and carry out blood coagulation.
Preferably, foot control interface is used to receive the control instruction of floor push, and the control instruction is transmitted to masterControl program.Wherein, control instruction be binary group<mode, power>.Mode includes: cut mode and coagulation mode.In blanking punchIn formula, power includes 9 gears, and in coagulation mode, and power includes 5 gears.
Preferably, control unit 302 parse and when the control instruction indicates the first mould to the control instructionFirst mode instruction is generated when formula, is calculated according to present impedance and the control instruction for the output power under first mode,First mode instruction and first voltage associated with the output power under first mode instruction are sent to interface listMember 303.Wherein, initial present impedance is zero, i.e., when the booting of low-temperature plasma incision knife surgery systems 300 is operated,The present impedance of default is zero.Described control unit 302 parse and when the control instruction refers to the control instructionSecond mode instruction is generated when showing second mode, is calculated according to present impedance and the control instruction for defeated under second modeSecond mode instruction and second voltage associated with the output power under second mode instruction are sent to by power outInterface unit 303.Wherein the present impedance includes high impedance, middle impedance and Low ESR (0 impedance is Low ESR).Preferably,If including: present impedance for the output power under first mode according to present impedance and control instruction calculating is high resistantThe 2nd grade under the anti-and described control instruction instruction first mode, then the 4th grade is set by the output power under first mode；If present impedance is middle impedance and the control instruction indicates the 2nd grade under first mode, will be defeated under first modePower setting is the 3rd grade out；And if present impedance is Low ESR and the control instruction indicates the 2nd under first modeShelves, then set the 2nd grade for the output power under first mode.Preferably, it is calculated according to present impedance and the control instructionIf including: present impedance for the output power under second mode is high impedance and control instruction instruction second modeUnder the 2nd grade, then set the 4th grade for the output power under second mode；If present impedance is middle impedance and the controlThe 2nd grade under system instruction instruction second mode, then the 3rd grade is set by the output power under second mode；And it is if currentImpedance is Low ESR and the control instruction indicates the 2nd grade under second mode, then sets the output power under second modeIt is set to the 2nd grade.Preferably, when the output power being calculated is more than the highest gear in first mode or second mode,Using highest gear as real output.
Preferably, interface unit 303 is used to receive first mode instruction from described control unit 302 and first voltage refers toShow, and first mode instruction and first voltage instruction are transmitted to plasma cell 304, and from plasma cell304 receive the present impedance of target contact jaws and the present impedance are sent to described control unit 302.And it described connectsMouthful unit 303 receives second mode instruction and second voltage instruction from described control unit 302, and by the second modeInstruction and second voltage instruction are transmitted to plasma cell 304.
Preferably, interface unit 303 is used for the power indication of reception control unit 302 and sends the power indicationTo plasma cell 304, and the real-time impedance of plasma cell 304 is measured and by the real-time impedance by connecingMouth unit 303 passes to control unit 302.
Preferably, plasma cell 304 is in response to receiving first mode instruction and the first electricity from the plasma cell 304Pressure instruction, into first mode: by emission electrode of the conducting medium at the target contact jaw of the plasma cell 304 andCircuit activation is carried out between loop electrode to form thin layer, applies first voltage between emission electrode and loop electrode, so thatThe conducting medium reaches the first temperature and is converted into plasmasphere, thus using electric energy excitation conducting medium generate etc. fromDaughter, and cutting is vaporized to objective body based on the RF energy of plasma.In response to from the plasma cell 304Received second instruction and second voltage instruction, the plasma cell 304 enter second mode: applying second voltage with by instituteThe target contact jaw for stating plasma cell 304 remains second temperature, so that objective body is carried out ablation solidification.
Preferably, alarm unit 305 is used for when receiving alarm signal, by auditory tone cues, text prompt and/or is referred toShow that lamp is shown to alarm.It wherein sends and alarms to control unit 302 after the plasma cell 304 detects operation troublesAlarm signal is sent to the alarm unit 305 by signal, described control unit 302.
Preferably, dropping liquid input unit 306 for the conducting medium input instruction based on described control unit 302 to it is equal fromSubelement 304 inputs the conducting medium, wherein the current surplus of conducting medium described in 304 real-time measurement of the plasma cellAnd the current surplus is sent to control unit 302, described control unit 302 is based on the current surplus and determines whether to give birth toInstruction is inputted at the conducting medium and inputs the conducting medium after the conducting medium inputs instruction determining to generateInstruction is sent to dropping liquid input unit 306.
Preferably, emission electrode, plasmasphere, loop electrode and the target at 304 tip catheter of plasma cell connectContravention forming circuit.In cut mode, the operating temperature of plasma cell 304 is 35 to 40 DEG C, and conventional electrosurgical knifeOperating temperature is 350 to 700 DEG C.The thermal break-through distance of plasma cell 304 than the thermal break-through of conventional electrosurgical knife apart from small,The thermal break-through distance that thermal break-through distance in middle cut mode is less than or equal in 150 microns and coagulation mode is less than or equal to200 microns, and the thermal break-through of conventional electrosurgical knife distance is greater than 9000 microns.
Preferably, display unit 307, the operation shape for low-temperature plasma incision knife surgery systems described in real-time displayState.300 working principle of low-temperature plasma incision knife surgery systems is effect of plasma radiofrequency ablation at low temperature.Energy is generated using bipolar cutter headPhysiological saline is converted into plasma thin layer by amount, is dissociated the molecular link for constituting cell component in target tissue, is caused tissue coagulationProperty necrosis, formed ablation or cutting effect.It is more electric than the high frequency cutting that tradition uses due to working at relatively low temperatureKnife is minimized degree to the thermal damage of perienchyma.Target volume can be made to reduce in 35 DEG C or so operating temperatures, target tissueIn capilary closing, cut off lesion.Its low temperature and tissue volume reduction Ablation characteristic, more common Single-pole electric knife have more desmopyknosisAfterwards the advantages of recovery time, mitigation postoperative pain and reduction expenses of surgical treatment.Low-temperature plasma incision knife surgery systems 300 existLower than 70 DEG C of cutter head ambient temperature (are detailed in isolated experiment research tissue thermal damage report) when work, and it is traditional commonHigh frequency cutting electric knife (100~150 DEG C of high temperature) is lower compared to operating temperature, although the treatment temperature of low temperature-controlled plasma radio-frequency ablation is oppositePeople's tissue still falls within high temperature, after histocyte is influenced by this temperature, equally will appear electric knife cutting and histone is caused to be denaturalized, especiallyAfter it is certain time, can also thermal damage be caused to tissue.And histiocytic degeneration necrosis is one and gradually developsProcess, therefore after the operation of some patientss row low-temperature plasma, the reaction such as the swelling of art area, postoperative pain is anti-unlike high frequency cutting electric knifeIt should be light.Since each operating time has differences so plasma therapeutic apparatus selects in isolated experiment research tissue thermal damage reportWith maximum operating time, electric knife is cut by the plasma therapeutic apparatus of the visible maximum operating time of comparison and the high frequency of normal useHeat waste depth.Therefore the heat waste depth of the plasma therapeutic apparatus of normal use should cut electric knife heat waste depth lower than high frequency.
Fig. 4 is the flow chart according to the low-temperature plasma incision knife operation method 400 of the preferred embodiment for the present invention.Such as figureShown in 4, method 400 is since step 401 place.In step 401, the control instruction of user's input is received.
In step 402, parsing and the generation when the control instruction indicates first mode are carried out to the control instructionFirst mode instruction, calculates according to present impedance and the control instruction for the output power under first mode.
In step 403, first voltage instruction associated with the output power under the first mode is determined.
In step 404, first mode instruction and first voltage instruction are transmitted to plasma apparatus, and from describedThe present impedance of plasma apparatus reception target contact jaw.
In step 405, indicated in response to receiving first mode instruction and first voltage, promote the plasma apparatus intoEnter first mode: by conducting medium between the emission electrode and loop electrode of the target contact jaw of the plasma cell intoRow Circuit activation applies first voltage to form thin layer between emission electrode and loop electrode, so that the conducting medium reachesTo the first temperature and it is converted into plasmasphere, to generate plasma using electric energy excitation conducting medium, and is based onThe RF energy of plasma is vaporized cutting to objective body；
The wherein emission electrode, plasmasphere, loop electrode and target contact jaw forming circuit.
It further include carrying out parsing to the control instruction and generating second when the control instruction indicates second modeMode instruction is calculated according to present impedance and the control instruction for the output power under second mode, and determining and instituteState the associated second voltage instruction of output power under second mode.Second mode instruction and second voltage instruction are turnedIssue plasma apparatus.In response to from the second instruction and second voltage instruction is received, the plasma apparatus enters the second mouldApply second voltage the target contact jaw of the plasma apparatus is remained second temperature, so that objective body be carried out likes:Ablation solidification.
It further include being shown and being reported by auditory tone cues, text prompt and/or indicator light when receiving alarm signalIt is alert；Alarm signal is wherein generated after detecting operation troubles.
Wherein user generates the control instruction by being operable to foot-operated input equipment, wherein the control refers toEnabling is binary group<mode, power>.
It further include that the conducting medium is inputted to the plasma apparatus based on conducting medium input instruction, wherein described etc.The current surplus of conducting medium described in ion device real-time measurement and based on the current surplus determine whether generate described in leadDielectric input instruction.The operating status of plasma apparatus described in 400 real-time display of method.
Fig. 5 is the structural schematic diagram according to the low-temperature plasma incision knife surgical apparatus of the preferred embodiment for the present invention.Such asShown in Fig. 5, low-temperature plasma incision knife surgical apparatus includes: emission electrode (cutting silk) 501, loop electrode (circle set) 502, pipeSheath 503, guidewire lumen interface 504, injecting cavity interface 505, rod cap 506, cushion block 507, sliding block (band socket aperture) 508, socket Pin509 and pull rod 510.Preferably, emission electrode (cutting silk) 501 and loop electrode (circle set) 502 are imported by identical conduitAnd galvanic circle is formed in objective body.Emission electrode (cutting silk) 501, receives the high frequency via socket Pin 509 and occursFirst input voltage caused by device applies first between emission electrode (cutting silk) 501 and loop electrode (circle set) 502Voltage, so that the conducting medium reaches the first temperature and the conducting medium is promoted to be converted into plasmasphere, thus sharpPlasma is generated with electric energy excitation conducting medium, and the RF energy based on plasma is vaporized objective body and cutsIt cuts.In the initial state, emission electrode 501 and loop electrode 502 be depend on substantially it is linear, before facilitating pipe sheath 503End enters human body.After reaching designated position, sliding block 508 is moved backward, and pulls emission electrode 501, is made emission electrode 501 and is returnedPath electrode 502 forms tortuous bow shape.Insulating layer (being not shown in Fig. 5) coats emission electrode (cutting silk) 501 conducting wires, and describedInsulating layer has been used to insulate and heat-insulated effect.Pipe sheath, for providing external sheath function.Injecting cavity interface 505 is based on liquidInput instruction inputs the liquid to liquid input unit, wherein liquid described in the liquid input unit real-time measurement is currentSurplus and the current surplus is sent to control unit, described control unit is based on the current surplus and determines whether to generateThe liquid input, which instructs and the liquid is inputted instruction after determining the generation liquid input instruction, is sent to dropping liquidInput unit.Injecting cavity interface 505 is the annular chamber outside loop electrode conducting wire.
Guidewire lumen interface 504 by seal wire along the guidewire lumen for inputting and being inserted to the low-temperature plasma incision knife handThe head end of art equipment, to promote emission electrode 501 and loop electrode 502 to be placed at the objective body.Pull rod 510 is for making to graspAuthor is by providing support force pull rod 510.Socket Pin 509 is connect by high frequency connecting line with radio-frequency generator, is used forReceive the first input voltage caused by the radio-frequency generator.Socket Pin 509 is received caused by the radio-frequency generatorSecond input voltage and second input voltage is transferred to emission electrode, emission electrode 501 and loop electrode 502 itBetween apply second voltage so that objective body remains second temperature, so that objective body be promoted to carry out ablation solidification.Liquid inputUnit (is not shown) in Fig. 5, in response to liquid input signal, to objective body at input liquid in emission electrode and circuitThe thin layer of conducting medium is formed between electrode.Liquid input unit carries out liquid input by one of following mode: titrationMode and continuous liquid supply mode.
Wherein, the material of emission electrode (cut silk) 501 be stainless steel 304, loop electrode (circle set) 502 material be notRust steel 304, pipe sheath 503 material be polytetrafluoroethylene PTFE, guidewire lumen interface 504 material be acrylonitrile-butadiene-benzene secondAlkene copolymer ABS, injecting cavity interface 505 material be ABS, rod cap 506 material be ABS, cushion block 507 material be ABS,The material of sliding block (with socket aperture) be ABS, socket Pin material be the material of stainless steel 304 and pull rod 510 be ABS.
As shown in figure 5, the length of loop electrode 502 can be any reasonable numerical value, such as 4 to 5 millimeters.Wherein, it returnsIt can be and appoint at a distance from the one end and the junction of emission electrode 501 and pipe sheath 503 at 503 top of close pipe sheath of path electrode 502It anticipates reasonable numerical value, such as 2 to 3 millimeters.Wherein, the close low temperature of loop electrode is arranged in water outlet (or referred to as infusion port)Between the side of the uncoated insulating layer of the side and emission electrode on the top of plasma incision knife surgical apparatus, i.e. water outlet quiltIt is arranged in the range of shown in Fig. 52 to 3 millimeters.
In the initial state, emission electrode 501 and loop electrode 502 be depend on substantially it is linear, to facilitate pipe sheath 503Front end enter human body.After reaching designated position, sliding block 508 is moved backward, and is pulled emission electrode 501, is made emission electrode 501Tortuous bow shape is formed with loop electrode 502.Sliding block 508 is at socket aperture, and socket Pin 509 is arranged in socket aperture.
Fig. 6-8 is the partial enlargement according to the low-temperature plasma incision knife surgical apparatus of the preferred embodiment for the present invention or cutsFace schematic diagram.Fig. 6 shows the partial enlargement diagram of bipolar electrode socket connector (incision knife connector) 600, including: it returnsPath electrode conducting wire 601 and emission electrode conducting wire (cutting silk conducting wire) 602.Low-temperature plasma incision knife surgical apparatus can be used in tenCutting, ablation and the solidification and hemostasis of two duodenum 12 nipples.In addition, low-temperature plasma incision knife surgical apparatus can also be used to closeCutting, ablation, solidification and the hemostasis of soft tissue in the surgical operations such as section, backbone, skin, ear nose larynx.Low temperature of the application etc. fromSub- incision knife surgical apparatus is to belong to brought into temporary contact, according to contact people within 24 hours, according to time of contact classification using the timeVolume property classification belongs to external access instrument (with tissue/bone/dentine) and belongs to according to the classification of medical instrument structure featureActive medical instrument.The attachment bipolar operation electrode of low-temperature plasma incision knife surgical apparatus belongs to disposable sterilized product.
Low-temperature plasma incision knife surgical apparatus uses bipolar scheme, and its working frequency is 110kHz.Plasma is controlledTreat cutting, ablation, solidification and hemostasis of the instrument 100 by plasma technology realization to soft tissue in the operation such as ear nose larynx.When work,Low-temperature plasma incision knife surgical apparatus, as conduction liquid, activates shape when between emission electrode and loop electrode by physiological salineAt a thin layer.When plasma therapeutic apparatus gives enough energy (voltage), physiological saline translates into one by band of energizingThe molecular gas blanket of electrochondria (plasmasphere).That is, low-temperature plasma incision knife surgical apparatus utilizes energy excitation conducting medium(for example, physiological saline) generates plasma, and interrupts tissue element key by the energy of plasma.The energy of plasmaAmount is by protein and other Direct Pyrolysis at O2, CO2, N2Equal gases, so that the vaporization completed to tissue is cut.When rightWhen the work cutter head of low-temperature plasma incision knife surgical apparatus gives low-voltage, electric field is lower than the thresholding requirement for generating plasmasphereAnd tissue resistance heat is generated, so that tissue is carried out ablation solidification and hemostasis.
Fig. 7 shows the schematic cross-section along B-B, including: loop electrode conducting wire 701, emission electrode conducting wire (are cutSilk conducting wire) 702, guidewire lumen 703, fluid-through chamber 704 and emission electrode chamber 705.In more detail, Fig. 7 shows loop electrode and leadsThe sectional view 706 of line 701, including insulating layer 707 and wire 708.Loop electrode conducting wire needs insulating layer, acts as insulationWith heat-insulated effect, emission electrode conducting wire (cutting silk conducting wire) can be not provided with insulating layer.
In addition, those skilled in the art is as needed, emission electrode chamber 705 can also be regard as fluid-through chamber, emittedWhen electrode cavity 705 is as fluid-through chamber, insulating layer need to be arranged in emission electrode conducting wire (cutting silk conducting wire).
Fig. 8 shows the schematic cross-section along C-C, (cuts including loop electrode conducting wire 801 and emission electrode conducting wireSilk conducting wire) 802.
Fig. 9 is the side view of the incision knife (low-temperature plasma incision knife) of seal assembly according to the present invention.In the present inventionIncision knife can be used in the cutting of duodenofiberscope, ablation and solidification and hemostasis.In addition, the incision knife can also be used to closeCutting, ablation, solidification and the hemostasis of soft tissue in the surgical operations such as section, backbone, skin, ear nose larynx.The incision knife uses the timeIt is to belong to brought into temporary contact within 24 hours, according to time of contact classification, belong to external access device according to contact human body qualitative classificationTool (with tissue/bone/dentine) and according to medical instrument structure feature classification belong to active medical instrument.Incision knife is using doublePole scheme, and its working frequency is 105kHz.Optionally, the working frequency of the incision knife can be in the range of 100-110.Incision knife realizes cutting, ablation, solidification and the hemostasis to soft tissue in the operation such as ear nose larynx by plasma technology.When work,Incision knife, as conduction liquid, forms a thin layer by physiological saline when activating between emission electrode and loop electrode.Work as incisionWhen knife gives enough energy (voltage), physiological saline translate into the gas blanket being made of charged particle of energizing (wait fromSublayer).That is, incision knife generates plasma using energy excitation conducting medium (for example, physiological saline), and rely on plasmaThe energy of body interrupts tissue element key.The energy of plasma is by protein and other Direct Pyrolysis at O2, CO2, N2DengGas, so that the vaporization completed to tissue is cut.When the work cutter head to incision knife gives low-voltage, electric field is lower than generation etc.The thresholding of sheath requires and generates tissue resistance heat, so that tissue is carried out ablation solidification and hemostasis.
The operation part of incision knife includes that handle 1, pull rod 2, socket Pin 3, sliding block 4, cushion block 5, front bar 6 (are also referred to as drawnPole cap), pipe sheath 7, injecting cavity interface 8, push rod 9 (the first push rod) and push rod 10 (the second push rod) etc..Pull rod 2 is by operator's handleIt holds to facilitate and operates the incision knife.Pipe sheath 7 is the elongated tubular longitudinally extended from front bar 16, pipe sheath 7 to be inserted into objective body (human bodyLesion).
As shown in Figure 10, fluid-through chamber 18 is arranged in pipe sheath 7, which leads to from the chamber being formed in front bar 6The top of pipe sheath 7.Fluid-through chamber 18 surrounds emission electrode conducting wire 16 (referring to Figure 12).Liquid (for example, conducting medium, ejected wash water etc.)Fluid-through chamber 18 is entered by the chamber in front bar 6 via the fluid entry port 8a in injecting cavity interface 8.
Pipe sheath 7 is for providing external sheath function.Injecting cavity interface 8 is inputted based on the liquid from controller (not shown)Instruction input liquid (such as conducting medium), wherein the current surplus of the liquid is by real-time measurement and the current surplus quiltIt is transmitted to controller, controller determines whether to generate the liquid input instruction and generate determining based on the current surplusAfter the liquid input instruction control liquid from the fluid entry port 8a in injecting cavity interface 8 via the chamber in front bar 6 toFluid-through chamber 18 and finally to the input of objective body.
In addition, as shown in figure 9, the operation part of incision knife further includes that 21 He of emission electrode on the top of pipe sheath 7 is arranged inLoop electrode 22.Emission electrode 21 is formed as cutting silk.
Emission electrode 21 (cutting silk) and loop electrode 22 (circle set) pass through pipe sheath 7 and are imported into objective body and in objective bodyForm galvanic circle.Emission electrode 21 is via the socket Pin 3 being connect by high frequency connecting line with radio-frequency generator (not shown)The first input voltage caused by the radio-frequency generator is received, to apply first between emission electrode 21 and loop electrode 22Voltage, so that the conducting medium reaches the first temperature and the conducting medium is promoted to be converted into plasmasphere, thus sharpPlasma is generated with electric energy excitation conducting medium, and the RF energy based on plasma is vaporized objective body and cutsIt cuts.
In the initial state, emission electrode 21 and loop electrode 22 be depend on substantially it is linear, before facilitating pipe sheath 7End enters human body, as shown by the broken line in fig. 9.After reaching designated position, sliding block 4 is moved backward, via emission electrode conducting wire16 pull emission electrode 21, so that emission electrode 21 and loop electrode 22 is formed tortuous bow shape, as shown by the solid line in FIG 9.
As shown in figure 9, incision knife includes guidewire lumen, for seal wire to be inputted to along guidewire lumen and is inserted to the top of pipe sheath 7,To promote emission electrode 21 and loop electrode 22 to be placed at objective body.Pass through seal wire, emission electrode 21 and loop electrode as a result,22 can swimmingly reach at objective body.
Seal wire for being inputted along the guidewire lumen and being inserted to the head end of incision knife by guidewire lumen interface 23, to promote to emitElectrode 21 and loop electrode 22 are placed at the objective body.Pull rod 2 is for making operator by providing support pull rod 2Power.Socket Pin 3 is connect by high frequency connecting line with radio-frequency generator, for receiving first caused by the radio-frequency generatorInput voltage.Socket Pin 3 receives the second input voltage caused by the radio-frequency generator and inputs electricity for described secondPressure is transferred to emission electrode 21, applies second voltage between emission electrode 21 and loop electrode 22, so that objective body is keptFor second temperature, so that objective body be promoted to carry out ablation solidification.
For example, the range of first temperature is 35 DEG C -40 DEG C, the range of the second temperature is 40 DEG C -70 DEG C.It is describedThe range of first voltage is 100Vrms to 300Vrms, and the range of the second voltage is 60Vrms to 80Vrms.
The length L1 of loop electrode 22 can be any reasonable numerical value, such as 4 to 5 millimeters.Wherein, loop electrode 22The one end at close 7 top of pipe sheath can be any reasonable numerical value, such as 2 to 3 millimeters with the top end face distance L2 of pipe sheath 7.Wherein, the top of pipe sheath 7 is arranged in water outlet (or referred to as infusion port, not shown), enters from the liquid in injecting cavity interface 8The liquid that port 8a enters enters objective body from water outlet.
Wherein, for example, the material of emission electrode 21 is stainless steel 304, the material of loop electrode 22 is stainless steel 304, pipeThe material of sheath 7 is polytetrafluoroethylene PTFE, and the material of injecting cavity interface 8 is acrylonitrile-butadiene-styrene copolymer ABS,The material of front bar 6 is ABS, and the material of cushion block 5 is ABS, and the material of sliding block 4 is ABS, and the material of socket Pin 3 is stainless steel304 and the material of handle 1 be ABS.
In addition, as shown in figure 12, illustrating emission electrode conducting wire (cutting silk conducting wire) 16, loop electrode conducting wire 17, logical liquidChamber 18, loop electrode chamber 19 and guidewire lumen B.In more detail, the enlarged view in Figure 12 shows emission electrode conducting wire 16Sectional view, including insulating layer 16a and wire 16b.Emission electrode conducting wire 16 needs insulating layer, act as insulation and it is heat-insulatedEffect, loop electrode conducting wire 17 can be not provided with insulating layer.
Incidentally, loop electrode chamber 19 and fluid-through chamber 18 are formed in pipe sheath 7 in parallel to each other and through pipe sheaths 7.Push rod 9 and push rod 10 are inserted into fluid-through chamber 18 and loop electrode chamber 19 respectively, and emission electrode 21 and loop electrode 22 are distinguished(do not schemed by being connected to radio-frequency generator through the emission electrode conducting wire 16 and loop electrode conducting wire 17 of push rod 9 and push rod 10Show).
As shown in figure 11, a part of loop electrode conducting wire 17 being located in the second push rod 10 is formed as spiral-shaped.It shouldThe diameter of a part of 17a is slightly smaller than the diameter of the second push rod 10.
Utilize above-mentioned construction, when the second push rod 10 is pushed, spiral-shaped a part of 17a of loop electrode conducting wire 17Allow the mutual sliding between loop electrode conducting wire 17 and the second push rod 10, and passes through spiral-shaped a part of 17a and theThe loop current between loop electrode conducting wire 17 and the second push rod 10 is connected in contact between the inner surface of two push rods 10.ThisOutside, it is contacted due to loop electrode conducting wire 17 with the inner surface of the second push rod 10, loop electrode conducting wire 17 is in second push rodIt will not be moved radially in 10.Further, since a part of 17a is located in the second push rod 10, therefore even if the second push rod 10 is pushed awayIt is dynamic, it also can guarantee that a part of 17a is always positioned in pipe sheath 7 (PTFE tube), without being pushed out.
The present invention is described by reference to a small amount of embodiment.However, it is known in those skilled in the art, asDefined by subsidiary Patent right requirement, in addition to the present invention other embodiments disclosed above equally fall in it is of the inventionIn range.
Normally, all terms used in the claims are all solved according to them in the common meaning of technical fieldIt releases, unless in addition clearly being defined wherein.All references " one/described/be somebody's turn to do [device, component etc.] " are all opened groundAt least one example being construed in described device, component etc., unless otherwise expressly specified.Any method disclosed hereinStep need not all be run with disclosed accurate sequence, unless explicitly stated otherwise.