CN209404937U - A kind of Low-temp. electrothermal melting welding knife - Google Patents

Abstract

Belong to electric heating melting weldering sealing blood vessels and cuts the electrosurgery unit of tissue.The Low-temp. electrothermal melting welding knife being made of the first working end of clamp equipped with electrothermal device, the second working end of corresponding clamp, connecting rod, control handle and power supply, its connecting rod is using inner sleeve and the outer tube composition that mutually axially can be rotated or be moved forward and backward, inner sleeve and outer tube distal end respectively with the first working end of clamp and the second working end of clamp directly weld or brake forming can be not required to that joint and shaft is arranged.Inner sleeve is mutually moved forward and backward with outer tube can make its first working end of clamp mutually carry out parallel clamp movement with the second working end of clamp, it can avoid because of articulated working end clamp Perspective of organization dynamics and disadvantage in uneven thickness, it carries out relatively reliable quick when tissue blood vessel heating melting welding and cutting, structure is simple, it is easy to operate, precisely efficiently.Battery is placed in control handle, is powered using special low dc voltage, it is safe and efficient.

Description

A kind of Low-temp. electrothermal melting welding knife

Technical field

The utility model category electrosurgery unit especially belongs to electric heating melting weldering sealing blood vessels and cuts the operation device of tissue.

Background technique

Cutting and hemostasis are the important steps of surgical operation.The cutting method and hemostatic technique of modern medicine are numerous, but still It is not able to satisfy clinical demand.For example electrosurgical techniques are exactly technically to develop from cryoprobe, it is therefore an objective to improve efficiency, reduce wound Wound.The most common equipment of electrosurgery is high-frequency monopolar electric knife and bipolar coagulation forceps, and high frequency high-density electric current is allowed to contact by electrode Operative site, make tissue generate high-temperature evaporation cutting and thermocoagulation hemostasis.Single-pole electric knife good cutting effect but haemostatic effect is not It is good, and application electric spark (high-frequency high-voltage current discharges between electrode and tissue generates high-temperature plasma arclight) high-temperature evaporation group A large amount of pernicious gases can be generated and cause large range of thermal damage by knitting.The high-tension current of electric knife need by human body and with The negative plate circuit of human contact is easy to cause patient's unexpected injury.Especially body has metal implant or artificial or electronic heart pacemaker Patient disables electric knife.The high-frequency high-voltage current of bipolar coagulation passes through from the tissue between bipolar electrode, and generating high temperature makes tissue Protein coagulation, haemostatic effect is good but cutting effect is bad, needs that Single-pole electric knife or cooler tool knife is cooperated to shear and cuts tissue.Bipolar electric The bad control of solidifying current density, when power tunes up and contact area is smaller, can generate tissue hyperthermia carbonization, burn and with electricity Very viscous company.When power is turned down and contact area is larger, then too small by the current density of tissue, being not achieved keeps histone solidifying Gu due temperature, haemostatic effect are bad.Have many Technology designs both at home and abroad to improve bipolar coagulation, as recently United States Patent (USP) US9861430, US9532829, US9610091, bipolar forceps make the tissue of institute's clamp generate heat using radio-frequency current Vessel closure is solidified, in addition a kind of by mechanical device movement again includes the tubular cutter incised tissue on elongated shaft.It is another United States Patent (USP) US9,833,285 use the first energy sealing blood vessels, the second energy cuts tissue in bipolar forceps.For clamp Two corresponding working electrodes of tissue block can not usually generate uniform fuel factor within the organization, no matter the tissue of institute's clamp is Thin still very thick, with the increase of RF energy density in organizing, temperature is increased, and organizes interior moisture evaporation dehydration, surface becomes It is dry, and additional resistance heating can be inhibited, reduce melting welding effect.It, can wink when improving radio-frequency voltage and meeting tissue impedance's raising Between occur that tissue local is dry and charing, and then may cause that the closing of the blood vessel melting welding in tissue is uneven, and haemostatic effect is bad. And radio-frequency current can also the horizontal proliferation since working electrode is by the tissue of clamp, cause to clamp flanking tissue and biggish heat occur Damage, or by-pass current is generated, serious adverse reaction and complication can be caused.Therefore, the brainstrust in this field still constantly causes Power is in being currently used in melting welding sealing blood vessels and cut the Electrosurgical instrument of tissue and working end is improved.Using laser Technology can solidify sealing blood vessels with side cutting group selvedge, but thermal damage is larger and expensive, to biggish vessel closure compared with fruit It is bad.At present in clinic hysteroscope surgery using it is more be ultrasound knife technology, such as United States Patent (USP) US9872699 and China's application CN200580034395 etc..In ultrasonic tissue heater, using very high frequency (ultrasonic wave) vibrating elements or stick and group It knits and is kept in contact, fast vibration generates heat, leads to the protein coagulating and decomposition in tissue, reaches the mesh of hemostasis and cutting 's.Ultrasound knife technical effect is preferable, but thermal damage is bigger than normal, and equipment consumptive material is expensive, increases medical expense.

United States Patent (USP) US6626901, US6908463, US7211079, US7211080, US7588566, US8016820 are public It opens a series of for closing and connecting or cutting the electric calorifie installation and method of tissue.This device is had proximally and distally by two The opposite working cell composition of working face, wherein at least one working cell surface adds equipped with the resistive conductor for closing and cutting tissue Thermal element, working cell surface also add high-temp.-resisting insulation sleeve.Working cell can be two expansibles of tweezers or pliers Or clamping limb or the jaw portion of closure, for clamp tissue and heat.When tissue is heated above 100 degrees Celsius, jaw or tweezer Tissue between son will be decomposed, thus by " cutting ".When tissue is heated to 50 to 90 degrees Celsius, tissue will be simple Neighbouring tissue is arrived in ground " sealing " or " welding ".The device closes adjacent tissue come melting welding using the combination of heat and pressure, And minimize collateral tissue thermal damage.Chinese utility model patent application CN200920102971 and CN200620047879 with Above-mentioned patented technology is similar.United States Patent (USP) US7011656, US7329255, US7771424, US8100908, PCT Patent Application WO9838935 and Chinese patent application CN200480040297 and CN200680014510, to above for closing and connecting Or the electric calorifie installation of cutting tissue and the patent of method are improved.It is main improvement be the first clamping limb clamping face and Increase a heat-conducting plate, improvement heating distribution between resistance wire.Another improvement is that resistance wire heating element is changed to metallized ceramic Heating element.California, USA Starion Instruments company (now switching to MICROLINE SURGICAL company) produces this Kind heat ligation closing cutter device is commonly called as thermal energy knife in Chinese market trade name electrical heat energy surgery systems.Thermal energy knife is working When no current by tissue, only complete vessel sealing by direct thermal energy conduction and the pressure of cutter head and tissue cut It cuts.Damage small, safety, can be used for it is general it is outer, secrete the open surgery of multiple departments such as outer, gynaecology, chest outer, ear nose larynx, angiocarpy and Endoscope-assistant surgery can be carried out the operation such as cutting, hemostasis, big vessel sealing, be also particularly suitable for tonsil resection and radial artery and big hidden Vein wins art (for heart pass).In this device, resistance wire heating element is two opposition in tweezers or pliers One of working cell surface, the blood vessel of closing or cutting is between the opposite working cell of electrode.When resistance wire electrified regulation, The tissue blood vessel adjacent with resistance wire is heated above 100 degrees Celsius of temperature, and histone structure will decompose, thus This position carries out " cutting " to tissue blood vessel.On the both sides of this " cutting area ", it is Celsius that tissue only can be heated to 50 to 90 Degree.In this lower temperature, histone can be denaturalized, to be welded together.It therefore, will under the action of machinery Two opposite working surfaces gently squeeze, tissue will " melting welding closing " together, thus in the two sides of central " cutting area " Respectively form one " enclosed area ".In the two enclosed areas, the end of blood vessel will be closed, and quite carry out vascular ligation.

When heating on the resistance wire directly contacted with tissue, the watt that the temperature actually heated depends on resistance wire is close Degree.In order to reach higher local temperature, high watt density is needed, it is especially (Celsius more than 100 in " cutting " temperature range Degree).Due to being limited by small and light DC power supply, in order to reach sufficiently high resistance and generate high watt density, especially For the cutting temperature of tissue, need using the lesser resistance wire of diameter.Tissue closing is carried out using minor diameter resistance wire and is cut Cut one the disadvantage is that, the contact area very little between conducting wire and surrounding tissue, the heat from conducting wire is applied to only tissue One pocket is unfavorable for the sealing blood vessels broken ends of fractured bone.Tissue heating surface (area) (HS should be increased, establish biggish " closing in ends of vessels Area " just can ensure that blood vessel keeps closing hemostasis.United States Patent (USP) US8100908 and Chinese patent application CN200480040297 are set The method of increase heat-conducting plate has been set to solve problem above.United States Patent (USP) US7918848, US8961503 and US9636163 are equivalent Sample improves in the technical foundation of the above electric heating melting welding, and designing one kind high efficiency separation and can win radial artery and big hidden Vein (be used for heart pass) can ensure that the smallest surrounding tissue thermal damage again, while safety cut-off blood vessel and can carry out closed Device.The utility model includes an elongated axis, has the first and second relatively moveable elongated jaw portions in its distal end.The The surface in one jaw portion provides first heating element of welding tissue and second heating element of cutting tissue.

The product of patented technology production more than pressing being commercialized, in clinical application still such as electrical heat energy surgery systems It was found that there are many shortcoming and defect.Such as the thermal energy knife of operation on tonsils is made for hals,Nasen und Ohrenheilkunde, in the gun-shaped forceps of lengthening Sample, front end is relatively straight and Zhang Bukai, and clamping tissue is not tight enough, and the lesser position in surgical procedure only front end can contact tissue, efficiency It is low, cut tissue and sealing blood vessels less effective.Especially when pole under tonsillotome is accomplished in operation, tweezers Zhang Bukai encounters out Haemostatic effect is bad when blood.Another kind for laparoscopic surgery pincers it is longer larger, also it is unsuitable do tonsillotome or palate pharynx at Type operation.In addition, existing electrical heat energy surgery systems are powered using external low-tension supply, if voltage is too low, consume on the line Ratio is excessive, underpower when reaching heating element.Resistance heating wire must be very thin if improving voltage, to improve resistance, keeps away It is excessive to exempt from heating power.Resistance heating wire's too detailed rules and regulations will lead to heating surface (area) (HS deficiency, and heat is excessively concentrated, and tissue melting welding effect is not Good, vessel closure is not tight, and resistance heating wire's overheat is easy to damage.Existing electric heating melting welding cutter device further drawback be structure excessively Complexity, especially the two of clamp front end jaw portion need to be arranged the devices such as turning joint, shaft, connecting rod and circuit-line, volume Need to be larger with diameter, it is otherwise easy to damage.Volume is excessive to have an effect on micro- fine surgical procedure.For raising blood vessel melting welding effect The first heating element used and the second heating element need two circuit systems (such as the first system for radio frequency heating sealing blood vessels, Second system is that resistance heating wire cuts tissue), structure is complicated, increases operational motion and difficulty.Existing similar technique product Articulated first working end (arm) and the second working end (arm) structure are mostly used, in addition circuit and heating element, design and produce It is sufficiently complex.And have a certain degree because articulated clamp working end (arm) is opened and closed all shapes, tissue dynamics to institute's clamp and In uneven thickness, when carrying out tissue blood vessel heating melting welding and cutting, effect is affected.The utility model is directed to and deposits above In problem, design and solution below have been carried out.

Utility model content

The main purpose of the utility model is that design it is a kind of in surgical operation can high-efficient simple sealing blood vessels simultaneously Cut the surgical instrument of tissue.The utility model is realized in this way: it is a kind of by be equipped with electrothermal device the first working end of clamp, The Low-temp. electrothermal melting welding knife that corresponding the second working end of clamp, connecting rod, control handle and power supply form, clamp first work Connecting rod between end, the second working end of clamp and control handle using the inner sleeve that mutually axially can rotate or be moved forward and backward and Outer tube composition, inner sleeve distal end is connected with the first working end of clamp of electrothermal device and shape is at a certain angle, outer tube Distal end connects another with corresponding parallel the second working end of clamp with identical angle of inner sleeve.Inner sleeve and outer tube distal end Setting joint and shaft can be not required to respectively with the first working end of clamp and the second working end of clamp is directly welded or brake forming. Inner sleeve and outer tube, which are mutually axially rotated or are moved forward and backward, can make its first working end of clamp and the second working end of clamp phase Mutually carry out clamp movement.Structure is simple, easy to operate, and clamping is close, is hardly damaged, instrument angle is reasonable, gets a clear view, can root It is made to according to Demand Design very fine.

Inner sleeve proximal end connection one can make inner sleeve with respect to the trigger that outer tube is moved forward and backward, and trigger can be there are many design side Formula has with reset spring, also has with turning joint.

Control handle is equipped with the space for accommodating battery and is equipped with the switch to be linked by trigger, battery and inner sleeve distal end Electrothermal device is equipped with electrical connection.The first working end of inner sleeve pipe wrench clamp one side corresponding with the second working end of housing pipe wrench clamp is equipped with electricity The first working end of inner sleeve pipe wrench clamp and the second clamp of outer tube working end when thermal device, inner sleeve and outer tube are mutually moved forward and backward It is closed in parallel folder or opening operation.The electrothermal device of the first working end of inner sleeve pipe wrench clamp is resistive heater, 0.2 to 5 Europe of impedance Nurse, 5 to 25 millimeters of length, is made by tungsten wire or nichrome wire by 0.2 to 0.5 millimeter of diameter.The first working end of inner sleeve pipe wrench clamp The resistive heater of electrothermal device one side corresponding with the second working end of housing pipe wrench clamp is exposed or spray layers high-temperature insulation Material, another side are isolated by high-temperature insulation material with the metal supporting surface of the first working end of clamp, resistive heater one end with The metal supporting surface of the first working end of clamp is electrically connected, and other end welding is cased with the low impedance conduction line of high-temperature insulation material simultaneously It passes through and connects to power supply from inner sleeve.The electrothermal device of the second working end of housing pipe wrench clamp and the first working end of inner sleeve pipe wrench clamp It is corresponding to be covered with high-temperature insulation material casing on one side.Ceramics, silica gel, glass fibre can be selected in the high-temperature insulation material Or polytetrafluoroethylene (PTFE) (Teflon) etc..The first working end of inner sleeve pipe wrench clamp and outer tube the second clamp working end in it is parallel press from both sides close or The design of opening operation can avoid and because there are angles dynamics and uneven thickness occurs for articulated clamp working end clamp tissue Even disadvantage carries out relatively reliable quick when tissue blood vessel heating melting welding and cutting.

The second working end of housing pipe wrench clamp can be set as suction tube nozzle, connect with suction tube, and inner sleeve pipe wrench clamp first works End can add water dropping openings, and inner sleeve proximal end connects the pipeline that drips.Increase drips and visual area can be made cleaner with suction device, absorbs Smog reduces temperature, reduces thermal damage.

The space that control handle accommodates battery can place rechargeable battery or high-energy battery, and 1 to 5 volt of voltage is adjustable, be equipped with Show battery capacity device, and equipped with can external low-voltage dc power supply power interface.It controls handle and is equipped with display low temperature The display screen of electric heating melting welding knife working end temperature, display screen and the first working end of inner sleeve distal jaw or outer tube distal end second The temperature sensor connection being arranged in clamp working end, temperature sensor use thermocouple device.It controls handle and is equipped with control Low-temp. electrothermal melting welding knife working end is continuously powered or the circuit control device of intermittently power-on, and is equipped with the acousto-optic of different working condition Prompt.The scheme that battery is accommodated using control handle, shortens power supply line, voltage is settable lower, the diameter of resistive heater Settable larger, Temperature Distribution is reasonable and is hardly damaged.

First working end of clamp, the second working end of corresponding clamp, connecting rod, control handle be all made of medical grade without Malicious heat-resisting material manufacture, may be designed as repeated disinfection use or disposable.First working end of clamp, corresponding pincers It presss from both sides and uses the device of adjustable rotation angle between the second working end, connecting rod and control handle, and be furnished with and facilitate adjusting work Hold the turntable or gear of angle.

The utility model embodiment also using a kind of unique regulation power and changes the first working end of clamp electrothermal device electricity Hinder the structural approach of heating wire heated perimeter: the first working end of clamp electrothermal device resistive heater is designed as long resistive heater The first working end of clamp, front end alignment, respectively by relatively higher or relatively low direct current are placed side by side with two kinds of short resistive heater Power voltage supply is controlled by power selector switch.Power selector switch is set as three gears, and interposition is to close gear or neutral gear position, to Upper is high-power gear, connects longer resistive heater in the electrothermal device of the first working end of clamp by higher DC voltage； Downwards it is small-power gear, resistance heating shorter in the electrothermal device of the first working end of clamp is connected by relatively low DC voltage Silk.High-power gear separates sealing blood vessels and cutting tissue with being suitble to quick-speed large-scale, and small-power gear is suitble to accurate small range Ground separates sealing blood vessels and cutting tissue.

A circuit discharge cock is set on control handle, and when closing hooks trigger action and linked switch, no power, at this time low temperature electric Thermofussion welding knife can be used as common clamp separation instrument and use, and avoids unexpected thermal damage and guarantees safety operation.

External low-voltage dc power supply, 2 to 12 volt of supply voltage can be used in the power supply, and electric current 1 to 5 is pacified.External low-pressure direct Another embodiment in galvanic electricity source is constituted using rechargeable battery pack, such as nickel-cadmium cell, nickel-metal hydride battery or lithium battery etc., in succession At circuit in parallel or series, by the different voltage output of selection switch-mode regulation.Another embodiment of power supply can be used medical low It presses isolating transformer to export low-voltage dc power supply, is equipped with control circuit and floor push, follow current output or interval may be selected Electric current output, intermittently power-on vessel closure effect is preferable, and continuous energization tissue cutting effect is preferable.Cutting and blood coagulation working condition By different acousto-optic hints and display.The Low-temp. electrothermal melting welding knife circuit design of the utility model is special low-voltage dc circuit, far Lower than the safe voltage of national regulation, and when use, simultaneously no current is by tissue, so the position of instrument and human contact It is all not necessary to especially be dielectrically separated from, as long as short circuit does not occur would not also occur unexpected thermal damage.It is outer relative to other types of electricity Section's equipment is more safe and simple, practical.

Detailed description of the invention

Fig. 1 is the structural schematic diagram that an embodiment of the present invention is in open state.

Fig. 2 is structural schematic diagram of an embodiment of the present invention in folder closed state.

Fig. 3 is the length resistive heater enlarged diagram of the first working end of the utility model clamp.

Specific embodiment

Below with reference to attached drawing, specific embodiment of the present utility model is described in further detail.

Refering to fig. 1, a kind of by being equipped with the first working end of clamp 2 of electrothermal device 1, corresponding clamp shown in Fig. 2 and Fig. 3 The Low-temp. electrothermal melting welding knife that second working end 3, connecting rod 7, control handle 12 and power supply form, it is characterised in that: clamp first Connecting rod 7 between working end 2, the second working end of clamp 3 and control handle 12 uses and mutually axially can rotate or be moved forward and backward Inner sleeve 5 and outer tube 6 form, 5 distal end of inner sleeve be connected with the first working end of clamp 2 of electrothermal device 1 and formed one Fixed angle, outer tube 6 distally connect another with corresponding parallel the second working end of clamp 3 with identical angle of inner sleeve 5. 5 proximal end of inner sleeve connection one can make inner sleeve 5 with respect to the trigger 9 that outer tube 6 is moved forward and backward, trigger 9 can there are many design method, Have with reset spring 10, also has with turning joint.Handle 12 is controlled to be equipped with the space for accommodating battery 13 and be equipped with by pulling The switch 11 that machine 9 links, battery 13 are equipped with the electrothermal device 1 of 5 distal end of inner sleeve and are electrically connected.The work of 5 clamp first of inner sleeve 2 one sides corresponding with 6 clamp the second working end 3 of outer tube are held to be equipped with electrothermal device 1, inner sleeve 5 and the mutually front and back of outer tube 6 are moved 5 the first working end of clamp 2 of inner sleeve and 6 second clamp working end 3 of outer tube are closed or opening operation in parallel press from both sides when dynamic.Inner sleeve The electrothermal device 1 of 5 the first working ends of clamp 2 be resistive heater, 0.2 to 5 ohm of impedance, 0.2 to 0.5 millimeter of diameter, length 5 To 25 millimeters, made by tungsten wire or nichrome wire.The resistive heater of 5 the first working end of clamp of inner sleeve, 2 electrothermal device 1 with 6 the second working end of clamp of outer tube, 3 corresponding one sides are exposed or spray layers high-temperature insulation material, another side are exhausted by high temperature resistant Edge material is isolated with the metal supporting surface of the first working end of clamp 2, the metal of resistive heater one end and the first working end of clamp 2 Supporting surface electrical connection, other end welding is cased with the low impedance conduction line 8 of heat proof material and passes through from inner sleeve 5 to be connected with power supply It connects.6 the second working end of clamp 3 of outer tube is corresponding with the electrothermal device 1 of the first working end of inner sleeve pipe wrench clamp 2 be covered on one side it is resistance to High temperature insulating material casing 4.

6 the second working end of clamp 3 of outer tube can be set as suction tube nozzle, connect with suction tube, 5 the first work of clamp of inner sleeve Water dropping openings can be added by making end 2, and 5 proximal end of inner sleeve connects the pipeline that drips.The high-temperature insulation material is ceramics, silica gel, glass Fiber or polytetrafluoroethylene (PTFE) (Teflon) etc..

The space that control handle 12 accommodates battery 13 can place rechargeable battery or high-energy battery, and 1 to 5 volt of voltage is adjustable, Equipped with display battery capacity device, and equipped with can external low-voltage dc power supply power interface 16.Control handle 12 is equipped with Show the display screen 18 of Low-temp. electrothermal melting welding knife working end temperature, display screen 18 and 5 the first working end of distal jaw 2 of inner sleeve or The temperature sensor 17 being arranged in the second clamp working end 3 of 6 distal end of outer tube connects, and temperature sensor 17 uses thermocouple device Part.Control handle 12 is continuously powered equipped with control Low-temp. electrothermal melting welding knife working end or the circuit control device of intermittently power-on 14, and it is equipped with the acousto-optic hint sound of different working condition.

First working end of clamp 2, the second working end of corresponding clamp 3, connecting rod 7, control handle 12 are all made of doctor It is manufactured with the nontoxic heat-resisting material of grade, may be designed as repeated disinfection use or disposable.It is the first working end of clamp, corresponding The device of adjustable rotation angle is used between the second working end of clamp, connecting rod and control handle, and is furnished with and facilitates adjusting work Make the turntable or gear of end angle.

2 electrothermal device of the first working end of clamp, 1 resistive heater is designed as long resistive heater 1-2 and short resistive heater Two kinds of 1-1 are placed side by side the first working end of clamp 2, front end alignment, respectively by relatively higher or relatively low DC-voltage supply, by Power selector switch 19 controls.Power selector switch 19 is set as three gears, and it is upwards big function that interposition, which is to close gear or neutral gear position, Rate gear connects longer resistive heater 1-2 in 2 electrothermal device 1 of the first working end of clamp；It is downwards small-power gear, connects Shorter resistive heater 1-1 in logical 2 electrothermal device 1 of the first working end of clamp.A circuit discharge cock is set on control handle 12 15, trigger action 9 is hooked when closing and linked switch 11, no power, the knife of Low-temp. electrothermal melting welding at this time can be used as common clamp separator Tool uses.

External low-voltage dc power supply, 2 to 12 volt of supply voltage can be used in the power supply, and electric current 1 to 5 is pacified.External low-pressure direct Another embodiment in galvanic electricity source is constituted using rechargeable battery pack, such as nickel-cadmium cell, nickel-metal hydride battery or lithium battery etc., in succession At circuit in parallel or series, different voltage outputs is adjusted by selection switch 19.Another embodiment of power supply can be used medical Low pressure isolating transformer export low-voltage dc power supply, be equipped with control circuit and floor push, may be selected follow current output or Electric current of having a rest output.

The Low-temp. electrothermal melting welding knife that has disinfected first is taken out when use, and (for example disposable packaging is then opened sterile Packing box takes out Low-temp. electrothermal melting welding knife), the container cover plate that control handle accommodates battery is opened, battery is illustratively installed (usually For two No. 2 rechargeable batteries).Low-temp. electrothermal melting welding knife is tested, a wet yarn block is taken to be placed in clamp the first working end 2 and the second work Make between end 3, opens the discharge cock 15 on control handle 12, hook 9 linked switch 11 of trigger action, at this time visible the first work of clamp Make end 2 and the second working end 3 to clamp wet gauze and heat and there is water vapour to blow out.Try not it is unloaded hook trigger action 9, otherwise easily make Electrothermal device 1 crosses cause thermal damage.

By taking tonsil resection or uvula palate pharynx urethroptasty as an example, local anaesthesia or general anesthesia, patient's left hand can be used Vessel forceps clamp uvula tip or palatine arches are held, the right hand holds Low-temp. electrothermal melting welding knife control handle for its first working end of clamp 2 With the second working end 3 clamp the mucous membrane or tissue to be cut, about 10 millimeters of length or so.Tight trigger is hooked, linked switch is started, it can The mucous membrane or other soft tissues for seeing clamp the first working end 2 and the clamping of the second working end 3 heat and have water vapour to blow out, lasting to press from both sides There is small range and whiten and separate to two sides in the mucous membrane or other soft tissues of visible clamping in tight about 3 seconds.Cut surface two sides are in more Linear white coagulation band, mostly without bleeding, the surface of a wound is clean, and anatomical layer understands.Continue by operation requirement cutting tissue and closes Blood vessel, until operation is completed.For the Low-temp. electrothermal melting welding knife equipped with attraction or function of dripping, corresponding suction pipe should be first connected With the pipeline that drips.External power supply should first be connected and make wet cloth clamp procedure by needing to use external power supply instead person.To equipped with working end Temperature display and there is power work state acoustic-optic indicator person, it should be noted that it shows whether numerical value and information meet operation and require.

The form of implementation of the utility model can have multiplicity, and connecting rod is changeable, and working end can be coarse to fine, and be suitable for ear nose Throat Head and neck tumour, general surgery, vascular surgery, first cream surgery, department of plastic surgery and a variety of hysteroscope surgical operations.

In conclusion the utility model can also have other various embodiments, without departing substantially from the spirit of the present invention and in fact In the case where matter, those skilled in the art work as can make various corresponding changes and modifications according to the utility model, but These corresponding changes and modifications all should belong to the protection scope of the utility model the attached claims.

Claims (16)

1. a kind of the first working end of clamp by being equipped with electrothermal device, the second working end of corresponding clamp, connecting rod, control handle And a kind of Low-temp. electrothermal melting welding knife of power supply composition, it is characterised in that: the first working end of clamp, the second working end of clamp and control Using inner sleeve and the outer tube composition that mutually axially can be rotated or be moved forward and backward, inner sleeve distal end connects connecting rod between handle Be equipped with the first working end of clamp of electrothermal device and shape is at a certain angle, outer tube distal end connect it is another corresponding with inner sleeve Parallel the second working end of clamp with identical angle；Inner sleeve proximal end connection one can be such that inner sleeve moves with respect to before and after outer tube Dynamic trigger；Control handle is equipped with the space for accommodating battery and is equipped with the switch to be linked by trigger, battery and inner sleeve distal end Electrothermal device be equipped with electrical connection.

2. a kind of Low-temp. electrothermal melting welding knife according to claim 1, it is characterised in that: first working end of inner sleeve pipe wrench clamp One side corresponding with the second working end of housing pipe wrench clamp is equipped with electrothermal device, inner sleeve when inner sleeve and outer tube are mutually moved forward and backward The first working end of pipe wrench clamp is closed with outer tube the second clamp working end in parallel folder or opening operation.

3. a kind of Low-temp. electrothermal melting welding knife according to claim 1, it is characterised in that: first working end of inner sleeve pipe wrench clamp Electrothermal device be resistive heater, 0.2 to 5 ohm of impedance, 0.2 to 0.5 millimeter of diameter, 5 to 25 millimeters of length, by tungsten wire or Nichrome wire production.

4. a kind of Low-temp. electrothermal melting welding knife according to claim 3, it is characterised in that: first working end of inner sleeve pipe wrench clamp The resistive heater of electrothermal device one side corresponding with the second working end of housing pipe wrench clamp is exposed or spray layers high-temperature insulation Material, another side are isolated by high-temperature insulation material with the metal supporting surface of the first working end of clamp, resistive heater one end with The metal supporting surface of the first working end of clamp 2 is electrically connected, and other end welding is cased with the low impedance conduction line of heat proof material and by interior It passes through and connects to power supply in casing.

5. a kind of Low-temp. electrothermal melting welding knife according to claim 1, it is characterised in that: second working end of housing pipe wrench clamp It is corresponding with the electrothermal device of the first working end of inner sleeve pipe wrench clamp to be covered with high-temperature insulation material on one side.

6. by a kind of Low-temp. electrothermal melting welding knife described in claim 1 or 5, it is characterised in that: second work of housing pipe wrench clamp Suction tube nozzle can be set as by making end, be connect with suction tube, and the first working end of inner sleeve pipe wrench clamp can add water dropping openings.

7. pressing a kind of Low-temp. electrothermal melting welding knife described in claim 4 or 5, it is characterised in that: the high-temperature insulation material is Ceramics, silica gel, glass fibre or polytetrafluoroethylene (PTFE).

8. a kind of Low-temp. electrothermal melting welding knife according to claim 1, it is characterised in that: the control handle accommodates the sky of battery Between can place rechargeable battery or high-energy battery, 1 to 5 volt of voltage is adjustable, the device equipped with display battery capacity, and equipped with can be outer Connect the power interface of low-voltage dc power supply.

9. a kind of Low-temp. electrothermal melting welding knife according to claim 1, it is characterised in that: the clamp working end, connecting rod, control Handle processed is all made of the nontoxic heat-resisting material manufacture of medical grade, repeats disinfection use or disposable.

10. by a kind of Low-temp. electrothermal melting welding knife described in claim 1 or 3, it is characterised in that: the first working end of clamp electricity Thermal device resistive heater is designed as long and short two kind and is placed side by side the first working end of clamp, front end alignment, respectively by relatively higher Or relatively low DC-voltage supply, it is controlled by power selector switch.

11. a kind of Low-temp. electrothermal melting welding knife as described in claim 10, it is characterised in that: the power selector switch is set as three Gear, interposition are to close gear or neutral gear position, are upwards high-power gear, are connected longer in the electrothermal device of the first working end of clamp Resistive heater；Downwards it is small-power gear, connects resistive heater shorter in the electrothermal device of the first working end of clamp.

12. by a kind of Low-temp. electrothermal melting welding knife described in claim 1 or 8, it is characterised in that: set an electricity on the control handle Road discharge cock, when closing, hook trigger action, no power, and Low-temp. electrothermal melting welding knife can be used as common clamp separation instrument and use.

13. by a kind of Low-temp. electrothermal melting welding knife described in claim 1 or 8, it is characterised in that: the power supply can be used external low DC power supply, 2 to 12 volt of supply voltage are pressed, electric current 1 to 5 is pacified.

14. a kind of Low-temp. electrothermal melting welding knife according to claim 13, it is characterised in that: the external low-voltage dc power supply is adopted It is constituted with rechargeable battery pack, such as nickel-cadmium cell, nickel-metal hydride battery or lithium battery etc., in succession at circuit in parallel or series, By the different voltage output of selection switch-mode regulation.

15. a kind of Low-temp. electrothermal melting welding knife according to claim 13, it is characterised in that: the power supply using low voltage medical every Low-voltage dc power supply is exported from transformer, is equipped with control circuit and floor push, follow current output or intermittent current may be selected Output.

16. a kind of Low-temp. electrothermal melting welding knife as described in claim 1 or 2, it is characterised in that: first working end of clamp, The device of adjustable rotation angle is used between corresponding the second working end of clamp, connecting rod and control handle, and equipped with convenient Adjust the turntable or gear of working end angle.