CN103211650A - Capacitive type operation electrode circuit pad - Google Patents
Capacitive type operation electrode circuit pad Download PDFInfo
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- CN103211650A CN103211650A CN2013101705166A CN201310170516A CN103211650A CN 103211650 A CN103211650 A CN 103211650A CN 2013101705166 A CN2013101705166 A CN 2013101705166A CN 201310170516 A CN201310170516 A CN 201310170516A CN 103211650 A CN103211650 A CN 103211650A
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- capacitor
- negative plate
- detecting pattern
- plate
- capacitance plate
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Abstract
The invention discloses a capacitive type operation electrode circuit pad. The capacitive type operation electrode circuit pad disclosed by the invention is manufactured by taking polymer gel as an insulating medium and pouring the polymer gel on two surfaces of conductive fabric of a capacitance plate. In order to solve the condition that the capacitance plate and the insulating medium are in drum stratification, a plurality of rectangular array circular holes are machined in the capacitance plate as required in the capacitive type operation electrode circuit pad disclosed by the invention; the poured polymer gel is used for integrally connecting the gel on two surfaces of the capacitance plate via the circular holes in the capacitance plate; and the capacitance plate is fixed among gel layers, so that the insulating medium on two surfaces of the capacitance plate are not separated from the capacitance plate. A high-frequency electric knife has two circuit negative plate detecting modes; and in order to enable the capacitive type operation electrode circuit pad disclosed by the invention to be suitable for the two detecting modes, a group of RC (Resistor Capacitor) circuits are added between two circuit lead wires in the capacitive type operation electrode circuit pad disclosed by the invention, so that an effect after pasting one-time bipolar negative plate on a human body is imitated, the circuit pad can pass the detection of the bipolar circuit detecting mode of the electric knife and the normal use of the operation electrode circuit pad is guaranteed.
Description
Technical field
The invention belongs to field of medical, specifically relate to a kind of capacitor type procedures electrode return pads.
Background technology
At present, known high frequency surgery electric knife is when undergoing surgery operation to patient, be by the scalpel that has lead, high frequency electric with high frequency generator generation in the high frequency electric knife, form a high frequency electric loop via patient body and the negative plate that is fixed on the patient body, to be used for cutting and the solidified structure of undergoing surgery.In most application, high frequency electric passes patient by active wires and electrode (scalpel), again by being fixed on the high frequency generator that negative plate on the patient body and lead thereof return high frequency electric knife.Usually patient body fixedly negative plate adopt sticking application mode, and need the nearer position that is fit to of chosen distance operative site, to guarantee that also negative plate and patient skin will have relative big contact area simultaneously, so that the passage of Low ESR and low current density to be provided.But in practical operation, many reasons such as that the restriction of selecting owing to the fixed position contact with negative plate is not firm, generation hollow cause contact area to reduce, make the contact site electric current density increase and produce hyperpyrexia, therefore, the time have patient skin to be burnt malpractice take place.When burn patients was performed the operation, the selection of fixing processing of negative plate and fixed position is a more scabrous problem especially in addition.According to above existing problems, contactless Capacitance Coupled principle has appearred adopting, high frequency electric knife radio frequency that high frequency generator produces (RF) power is carried out power conduction, form the high frequency electric path, with operation that patient is undergone surgery, can improve effectively the generation of patient's electric injury malpractice and the difficulty that the fixed position is selected
With reference to the patent No. 200480034536 (U.S. Megadyne Medical Products, Inc.), and the patent No. 200720173812.1 (procedures electrode return pads) summary of the invention, be the negative plate product that utilizes the Capacitance Coupled principle to make, and in operation is used, certain effect arranged.But in use still there is certain problem in actual product, and Shi Erhui produces the certain electric injury infringement and the variation of electrotomy duty to patient, its reason is that the material as dielectric is that capacitor plate is encapsulated in the middle of the two-layer dielectric, because of the area of capacitor plate and dielectric suitable, therefore dielectric is divided into two fully, have only the edge to be combined as a whole, and this product all needs with very softish material, pressure in use can appear constantly rubbing, situation such as folding, can cause dielectric and capacitor plate to produce from drum, lamination, therefore cause the instability of capacitance, both caused the variation of whole high frequency electric path resistance.
Should know those skilled in the art: to electrotomy, electric knife with the active electrode (electric knife head) at contact patients point place must be very little, to produce the surgical effect to cut with the high current density of coagulating tissue, transmit with the refurn electrode (negative plate) of active electrode (electric knife head) same current with the effective area at patient's connectivity points place should be enough big, thereby the density that flows to the electrosurgical electric current of refurn electrode (negative plate) from patient is limited to level of security, if the density of electrosurgical electric current at the refurn electrode place than higher, then the temperature of patient skin tissue will raise in this zone, can cause unnecessary electric injury.And in noncontact negative plate product, impedance in the loop mainly is the capacitive reactance decision by electric capacity, therefore owing to capacitor plate and the isolating reason of dielectric, can cause capacitance to reduce, i.e. capacitive reactance is increased, and causes high frequency electric path total impedance to increase, the performance that then can produce electric knife cutting and coagulating tissue descends, so that can't operate as normal, detect the function that electric current changes even high frequency electric knife has, but still can greatly influence surgical effect.
Summary of the invention
The technical solution used in the present invention is: capacitor type procedures electrode return pads uses high-molecular gel as dielectric, make watering gel-filled mode as the metallic conduction cloth two sides of capacitor plate, for solving capacitor plate and dielectric from drum layering situation, the present invention adopts and add number row rectangular array circular hole on request on capacitor plate, the high-molecular gel of cast then connects as one by the gel of the circular hole on the capacitor plate with the capacitor plate two sides, capacitor plate is fixed between the gel layer, and can guarantees effectively that the dielectric on capacitor plate two sides can not separate with capacitor plate.
For guaranteeing the high frequency electric knife operate as normal, must guarantee that capacitor plate and human body have certain induction area (the both electric capacity of human body and pole plate formation), therefore capacitor plate also needs enough large tracts of land, so that human body in various operation positions, can satisfy the low impedance path that the high frequency surgery electric current returns the electrosurgical high frequency generator.The area of general procedures electrode return pads product capacitor plate is
44cm*114cm＝5016cm
2
By known electricity general knowledge, capacitance C computing formula is:
ε in the formula
r-insulant relative dielectric constant (high-molecular gel dielectric constant)
ε
O-dielectric constant of air
S-capacitor plate area
D-capacitor pole distance between plates is from (gel layer thickness between human body and the capacitor plate)
Other parameter there is not change among the present invention, because of on capacitor plate, being added with circular hole, have only the pole plate area to reduce, so as long as the variation (being the variation of capacitance) of before relatively improving and improvement back pole plate area, can verify whether the procedures electrode return pads after the improvement is influential to serviceability, present embodiment capacitor plate circular hole quantity is 9, and the aperture is that the area of Φ 1.2cm circular hole subduction is
3.14*0.6
2*9＝10.17cm
2
Pole plate real area after the improvement is
5016cm
2-10.17cm
2＝5005.83cm
2
Area change percentage ratio is
5005.83/5016＝0.997972％
Area reduce less than 0.01% that is capacitance reduce can ignore fully less than 0.01%, to not influence of bulk loop impedance, but this improvement has solved the separation problem of capacitor plate and dielectric really, has guaranteed the job stability of procedures electrode return pads and high frequency surgery electric knife.
Further improve: high frequency electric knife all has loop negative plate measuring ability, and high frequency electric knife has two kinds of loop negative plate detecting patterns usually, i.e. single loop negative plate detecting pattern and double loop negative plate detecting pattern.By original procedures electrode return pads circuit structure, only be applicable to the single loop negative plate detecting pattern of high frequency electric knife, when high frequency electric knife was in double loop negative plate detecting pattern, the double loop detecting pattern of electric knife the loop can occur and report to the police, this moment, the output of electric knife inactivity can't be worked.
For head it off the technical solution used in the present invention is: the capacitor plate lead-out wire is designed to be applicable to respectively the single loop negative plate detecting pattern of high frequency electric knife and two leads of double loop negative plate detecting pattern, on two leads, all add connecting pin, the lead centre that is applicable to double loop negative plate detecting pattern has therein added one group of RC circuit, be about to be connected between the return wire after resistance and the electric capacity parallel connection, and adopt Plastic Package that the RC circuit is injection-moulded on the lead.The numerical value of resistance and electric capacity derives from bipolar negative plate is attached to the resistance behind the human body and the mensuration of capacitance.Imitate effect after disposable bipolar negative pole plate sticks on human body with this.The capacitor plate lead-out wire is adapted as the gang socket that to dock with two lead connecting pins respectively, the lead that can be suitable for by changing-over as required, make return pads guarantee the normal use of procedures electrode return pads by the single loop detecting pattern of electric knife and the detection of double loop detecting pattern.
Advantage and beneficial effect that the present invention has are: solved the separation problem of capacitor plate and dielectric really, guaranteed the job stability of procedures electrode return pads and high frequency surgery electric knife.By improvement, can make capacitor type procedures electrode return pads be applicable to single loop negative plate detecting pattern and double loop negative plate detecting pattern simultaneously to circuit structure.
Description of drawings
Fig. 1 is a sketch map before improving;
Among the figure: 1. dielectric 2. capacitor plates, 3. capacitor plates and dielectric separation case
Fig. 2 improves the back sketch map;
Among the figure: 4. connect as one by capacitor plate circular hole two sides dielectric
Fig. 3 capacitor type procedures electrode return pads schematic perspective view
Among the figure: 5. capacitor plate circular hole 6. capacitor plate lead-out wires 7. capacitor plate lead-out wire sockets
The single, double loop of Fig. 4 connecting line uses sketch map
Among the figure: 8. single loop connecting line plug 9. double loop connecting line plug 10.RC Resistor-Capacitor Unit packaging body 11. high frequency electric knife connecting pins
Fig. 5 RC Resistor-Capacitor Unit circuit diagram
The specific embodiment
The present invention relates to a kind of capacitor type procedures electrode return pads, by solve capacitor plate separate with dielectric the variation of generation capacitance, adopted in capacitor plate punching mode, make dielectric the two sides be connected as one and to guarantee reliably that dielectric no longer separates with capacitor plate by punching, the specific embodiment is the one side cast high-molecular gel at capacitor plate, when needing thickness, arrival pours into a mould high-molecular gel at the capacitor plate another side again, therefore high-molecular gel is still in thick liquid nano the time, therefore being about to the two sides molten by the capacitor plate punching is one, can be to dash 3 rounds in the present embodiment according to actual needs at capacitor plate length direction upper punch 4-5 round.
Another improves embodiment increases by a multi-tap with the capacitor plate lead-out wire, return wire changes two into, increase the RC Resistor-Capacitor Unit on a lead therein, and appearance is injected into one with Plastic Package and lead, detect effect in order to the simulated dual loop electrode, make capacitor type procedures electrode return pads can be common to the single loop negative plate detecting pattern and the double loop negative plate detecting pattern of high frequency electric knife.Concrete using method is when the high frequency surgery electric knife is single loop negative plate detecting pattern, use the single loop connecting line, single loop connecting line plug 8 is inserted in the capacitor plate lead-out wire socket 7, and high frequency electric knife connecting pin 11 directly is connected and can normally uses with the high frequency electric knife socket.When the high frequency surgery electric knife is double loop negative plate detecting pattern, then use the double loop connecting line, double loop connecting line plug 9 is inserted in the capacitor plate lead-out wire socket 7 and can normally use.
More than two kinds of embodiment of invention are had been described in detail, but described content only is preferred embodiment of the present invention, can not be considered to be used to limit practical range of the present invention.All equalizations of doing according to the present patent application scope change and improve etc., all should still belong within the patent covering scope of the present invention.
Claims (5)
1. capacitor type procedures electrode return pads, by the high-molecular gel layer as dielectric, metallic conduction cloth is as capacitor plate, and the capacitor plate lead-out wire is designed to be applicable to respectively the single loop negative plate detecting pattern of high frequency electric knife and two leads of double loop negative plate detecting pattern, it is characterized in that: on capacitor plate, prevent capacitor plate and the isolating circular hole of dielectric towards there being number to arrange by rectangular array.
2. a kind of capacitor type procedures electrode return pads according to claim 1, it is characterized in that: described capacitor plate lead-out wire has installed gang socket additional at exit.
3. a kind of capacitor type procedures electrode return pads according to claim 1, it is characterized in that: the described single loop negative plate detecting pattern of high frequency electric knife and two leads of double loop negative plate detecting pattern of being applicable to respectively, all add connecting pin, can be connected with capacitor plate by of the gang socket of capacitor plate lead-out wire respectively at exit.
4. a kind of capacitor type procedures electrode return pads according to claim 3, it is characterized in that: the described single loop negative plate detecting pattern of high frequency electric knife and two leads of double loop negative plate detecting pattern of being applicable to respectively are applicable in the lead of double loop negative plate detecting pattern to be in series with the RC resistance-capacitance circuit therein.
5. a kind of capacitor type procedures electrode return pads according to claim 3 is characterized in that: being applicable to placed in-line RC resistance-capacitance circuit in the lead of double loop negative plate detecting pattern, is to adopt Plastic Package and injection moulding to be fixed on the return wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310170516.6A CN103211650B (en) | 2013-05-10 | 2013-05-10 | Capacitive type operation electrode circuit pad |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310170516.6A CN103211650B (en) | 2013-05-10 | 2013-05-10 | Capacitive type operation electrode circuit pad |
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| CN103211650A true CN103211650A (en) | 2013-07-24 |
| CN103211650B CN103211650B (en) | 2015-03-11 |
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| CN201310170516.6A Active CN103211650B (en) | 2013-05-10 | 2013-05-10 | Capacitive type operation electrode circuit pad |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106420046A (en) * | 2016-09-30 | 2017-02-22 | 北京迈迪顶峰医疗科技有限公司 | Integral electrode |
| CN107456275A (en) * | 2017-08-25 | 2017-12-12 | 奥克兰高分子医用材料(天津)有限公司 | Novel operation electrode loop pad and preparation method thereof |
| CN107669336A (en) * | 2017-09-30 | 2018-02-09 | 奥克兰高分子医用材料(天津)有限公司 | Children and the universal operation electrode loop pad of adult |
| CN113786236A (en) * | 2021-09-16 | 2021-12-14 | 奥克兰高分子医用材料(天津)有限公司 | Liquid leakage prevention high-frequency negative pole loop pad |
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| CA1105565A (en) * | 1978-09-12 | 1981-07-21 | Kaufman (John G.) Hospital Products Ltd. | Electrosurgical electrode |
| FR2516782A1 (en) * | 1981-11-20 | 1983-05-27 | Alm | Electric surgical scalpel with HF current source - has active and return electrodes, generator and capacitive impedance monitor |
| CN1450921A (en) * | 2001-01-31 | 2003-10-22 | 玛格戴恩医疗产品公司 | Pressure sore pad having self-limiting electrosurgical return electrode properties and optional heating/cooling capabilities |
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| CN2624845Y (en) * | 2003-06-10 | 2004-07-14 | 李平 | Negative electrode pad for electrosurgical operation |
| US20090234352A1 (en) * | 2008-03-17 | 2009-09-17 | Tyco Healthcare Group Lp | Variable Capacitive Electrode Pad |
| US20100331835A1 (en) * | 2009-04-27 | 2010-12-30 | Bovie Medical Corporation | Return electrode detection and monitoring system and method thereof |
| CN202665689U (en) * | 2012-03-16 | 2013-01-16 | 扬州市第一人民医院 | Endotherm knife output transverter |
| CN203263529U (en) * | 2013-05-10 | 2013-11-06 | 赵光华 | Capacitive type operation electrode loop pad |
-
2013
- 2013-05-10 CN CN201310170516.6A patent/CN103211650B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1105565A (en) * | 1978-09-12 | 1981-07-21 | Kaufman (John G.) Hospital Products Ltd. | Electrosurgical electrode |
| FR2516782A1 (en) * | 1981-11-20 | 1983-05-27 | Alm | Electric surgical scalpel with HF current source - has active and return electrodes, generator and capacitive impedance monitor |
| CN1452475A (en) * | 2000-05-12 | 2003-10-29 | 玛格戴恩医疗产品公司 | Self-limiting electrosurgical refurn electrode |
| CN1450921A (en) * | 2001-01-31 | 2003-10-22 | 玛格戴恩医疗产品公司 | Pressure sore pad having self-limiting electrosurgical return electrode properties and optional heating/cooling capabilities |
| CN2624845Y (en) * | 2003-06-10 | 2004-07-14 | 李平 | Negative electrode pad for electrosurgical operation |
| US20090234352A1 (en) * | 2008-03-17 | 2009-09-17 | Tyco Healthcare Group Lp | Variable Capacitive Electrode Pad |
| US20100331835A1 (en) * | 2009-04-27 | 2010-12-30 | Bovie Medical Corporation | Return electrode detection and monitoring system and method thereof |
| CN202665689U (en) * | 2012-03-16 | 2013-01-16 | 扬州市第一人民医院 | Endotherm knife output transverter |
| CN203263529U (en) * | 2013-05-10 | 2013-11-06 | 赵光华 | Capacitive type operation electrode loop pad |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106420046A (en) * | 2016-09-30 | 2017-02-22 | 北京迈迪顶峰医疗科技有限公司 | Integral electrode |
| WO2018058836A1 (en) * | 2016-09-30 | 2018-04-05 | 北京迈迪顶峰医疗科技有限公司 | Integrated electrode |
| CN107456275A (en) * | 2017-08-25 | 2017-12-12 | 奥克兰高分子医用材料(天津)有限公司 | Novel operation electrode loop pad and preparation method thereof |
| CN107669336A (en) * | 2017-09-30 | 2018-02-09 | 奥克兰高分子医用材料(天津)有限公司 | Children and the universal operation electrode loop pad of adult |
| CN113786236A (en) * | 2021-09-16 | 2021-12-14 | 奥克兰高分子医用材料(天津)有限公司 | Liquid leakage prevention high-frequency negative pole loop pad |
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|---|---|
| CN103211650B (en) | 2015-03-11 |
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