CN203341811U - Cold saline perfusion ablation catheter system - Google Patents
Cold saline perfusion ablation catheter system Download PDFInfo
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- CN203341811U CN203341811U CN 201320384563 CN201320384563U CN203341811U CN 203341811 U CN203341811 U CN 203341811U CN 201320384563 CN201320384563 CN 201320384563 CN 201320384563 U CN201320384563 U CN 201320384563U CN 203341811 U CN203341811 U CN 203341811U
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Abstract
The utility model provides a cold saline perfusion ablation catheter system which comprises a cold saline perfusion ablation catheter, a radio frequency device and a perfusion pump, wherein the radio frequency device is coupled with the cold saline perfusion ablation catheter and provides radio frequency energy and the perfusion pump is connected to the catheter to convey cold saline. The cold saline perfusion ablation catheter system is characterized in that the perfusion pump comprises a temperature setting module, or the radio frequency device comprises the temperature setting module and is coupled with the perfusion pump in a communicated mode, and set temperature is transmitted to the perfusion pump in a communication coupling mode. The perfusion pump comprises a refrigeration component carrying out refrigeration on the cold saline according to the set temperature. The perfusion pump can cool the normal saline to proper low temperature, the low-temperature saline is perfused when the saline ablates, an ablation electrode can be scoured more effectively, the surface temperature of the electrode can be better lowered, enough ablation energy is applied, and ablation depth can be provided more effectively. According to the cold saline perfusion ablation catheter system, various models of cold saline perfusion melting catheters sold in the market can be used directly, only the radio frequency device and the perfusion pump are modified, and manufacturing cost and production difficulty of the system are reduced.
Description
Technical field
This utility model relates to a kind of cold brine perfusion ablation catheter system, more specifically, relate to a kind of mainly by for carry out radio-frequency (RF) ablation in body vessels and carry out cold brine perfusion conduit, provide the radiofrequency generator of radio-frequency pulse energy, the charge pump that transmits cool brine to be coupled the cold brine perfusion ablation catheter system formed.
Background technology
Radio frequency ablation catheter is a kind of electrophysiologicalcatheter catheter commonly used, usually is used at present treat the diseases such as arrhythmia, heart failure, Paroxysmal Atrial Fibrillation, such as carrying out that the renal artery denervation melt, the pulmonary artery denervation melts for the disease for different etc.This Therapeutic Method has been avoided patient's the hardship of opening breast, again can radical curing of disease, also can not cause any severe complication, and therefore at home and abroad be widely applied clinically.
But, there is a major defect in this traditional radio frequency ablation catheter, in order to reach darker depth of ablation, can use higher ablation energy clinically, tend to like this cause target spot position tissue local overheated and cause incrustation, thereby affected effectiveness and the safety of operation.
In order to reach darker depth of ablation, can be in radio-frequency (RF) ablation, spray cool brine around radio-frequency ablation electrode, can make so the higher power of ablation catheter utilization reach darker depth of ablation, cool brine has again the heat of taking away radio-frequency ablation electrode simultaneously, keep ablating electrode on every side in suitable temperature, reduce electrode surface incrustation and thrombosed risk, improve safety and the effectiveness of operation.
But, prior art utilizes " cool brine " (also referred to as the conventional normal saline) under 20-25 ℃ of room temperatures to carry out perfusion of saline usually, from existing clinical effectiveness, though promoted surgical effect with respect to traditional mode that melts, but take away the finite energy of ablating electrode by heat exchange in view of the cool brine of this temperature, cause promoting effect limited.
Granted publication number discloses a kind of porous ablating electrode conduit for the Chinese utility model patent of CN201356648Y, wherein on tip electrode, there is a plurality of salt water hole, the salt water hole axially is uniformly distributed along electrode, the salt water hole is divided into one and drains into three rows' arrangements, between each row, can align and arrange or Heterogeneous Permutation.This patent has partly improved the cooling-down effect of tip electrode, but use perfusion fluid, is conventional normal saline infusion liquid, and achieved cooling-down effect is still limited.
The Chinese patent application that publication number is CN102631240A discloses a kind of ablation catheter of multi-path salt aquaporin, and wherein the passage of perfusion of saline liquid has many, and certain saline channel jam wherein, can not affect the normal operation of other salt aquaporins.This technology has certain economy, but its use liquid is conventional normal saline infusion liquid, and the electrode drop temp effect is limited.
Granted publication number discloses a kind of rf ablation therapeutic instrument that can automatically control perfusion of saline for the Chinese utility model patent of CN201453373U, comprise radiofrequency ablation therapy device, cold brine perfusion pump, foot switch, back pole plate and cold brine perfusion ablation catheter, wherein, the cold brine perfusion pump is connected with the radiofrequency ablation therapy device by cable.Although this patent discloses can be by user straightforward manipulation charge pump 1 to adjust the manual mode of perfusion parameters, and controlled the automated manner of the cool brine flow of charge pump 1 via control chip wherein according to preset parameter by radiofrequency ablation therapy device 3.But using perfusion fluid in this patent is conventional normal saline, the perfusion parameters that can regulate only limits to the cool brine flow and does not mention the cool brine temperature.
But patent CN102688090A discloses a kind of perfusion of saline formula radio frequency ablation catheter for renal artery of two-way hole, and wherein conduit has the function of two-way adjustable bending, its salt mouth of a river perforate is at the sidewall of conduit, and its use liquid is conventional normal saline infusion liquid.
Patent CN102813552A discloses a kind of fixing means of ablating electrode of perfusion of saline type electrophysiology ablation conduit, and wherein fill orifice is processed from the electrode distal end water spray equably, and its use liquid is conventional normal saline infusion liquid.
From above, can see; the general cool brine used under room temperature in prior art; and do not recognize the temperature of according to the requirement of the pathological changes situation of concrete target spot tissue and depth of ablation, regulating cool brine; therefore; often can occur in while melting because the cooling-down effect deficiency of cold brine perfusion causes for fear of excess Temperature the ablation energy deficiency applied; sufficient depth of ablation can't be provided, thus the therapeutic effect that impact is melted.
Therefore, need a kind of cold brine perfusion ablation catheter system, this system comprises the cold brine perfusion ablation catheter, be coupled to this conduit provides the radiofrequency generator of radio-frequency pulse energy, be connected to this conduit transmits the charge pump of cool brine with at least one in flow, integrated flow and the flow-sequential set, it is characterized in that: described charge pump comprises refrigeration part, for the temperature according to setting, cool brine is freezed.In this system, charge pump has the Automatic-cooling function, the normal saline refrigeration that tradition can be used is to suitable low temperature, adopt the cool brine of low temperature to be poured into when melting, can more effectively to ablating electrode, be washed away, reduce better the temperature of electrode surface, can apply enough ablation energies, thereby depth of ablation more effectively is provided.
The utility model content
This utility model provides a kind of cold brine perfusion ablation catheter system, comprise the cold brine perfusion ablation catheter, be coupled to this conduit the radiofrequency generator of radio-frequency pulse energy is provided, be connected to the charge pump that this conduit transmits cool brine, it is characterized in that: described charge pump comprises the Temperature Setting module; Perhaps, described radiofrequency generator comprises described Temperature Setting module, and communication be coupled to described charge pump, the temperature set is coupled and is transferred to described charge pump via described communication; And described charge pump comprises the refrigeration part according to the temperature refrigeration of setting to cool brine.
Described cold brine perfusion ablation catheter can directly adopt the ablation catheter with cold brine perfusion function of existing various models, there is the salt aquaporin in these conduits, passage as the circulation of low temperature cold saline, be evenly distributed with a plurality of salt water hole on ablating electrode, low temperature cold saline can be sprayed in each salt water hole.Native system can be achieved as follows useful technique effect: adopt the cool brine of low temperature to be poured into when melting, can more effectively to ablating electrode, be washed away, reduce better the temperature of electrode surface, can apply enough ablation energies, thereby depth of ablation more effectively is provided; Can look treatment and need to set according to experience the suitable cryogenic temperature of cool brine, thereby, when guaranteeing cooling and washing away and enough depth of ablation are provided, also can save the required energy expenditure of refrigeration; In addition, the cold brine perfusion ablation catheter in this system can directly adopt the cold brine perfusion ablation catheter of the various models of selling on the market, and needing improved is radiofrequency generator and charge pump, has reduced manufacturing cost and the production difficulty of whole system.
The temperature of described cool brine can be-20-20 ℃.Preferably, the temperature of cold brine perfusion liquid is-10-10 ℃.For heart radio frequency ablation and renal artery ablation applications, preferably, the temperature of cold brine perfusion liquid is 0-8 ℃.
Preferably, described charge pump also comprises the setting module of at least one parameter in flow, flow-sequential and integrated flow; Perhaps described radiofrequency generator comprises the setting module of at least one parameter in described flow, flow-sequential and integrated flow, and at least one parameter set is coupled and is transferred to described charge pump via described communication.
The doctor can select above any setting means as required, for example, in the situation that surgical staff abundance and these personnel are familiar with the operation of charge pump, perhaps in the situation that communicating by letter between radiofrequency generator and charge pump is coupled fault, can be responsible for directly setting above parameter (at least one parameter in comprising temperature and flow, flow-sequential and integrated flow) on charge pump according to doctor's indication by personnel, make the doctor can concentrate one's energy to carry out conduit and insert, on radiofrequency generator, ablation parameter be set and execution is melted; If, and skilled staff relative deficiency or radiofrequency generator and the distant doctor of causing of charge pump can't take into account in both situations of setting, above parameter can be set on radiofrequency generator, these parameters are coupled and are transferred to charge pump for it via described communication.Preferably, described communication is coupled by wired or wireless mode and realizes, wired mode comprises that cable connects, and wireless mode is selected from any in being coupled of bluetooth, radio frequency, infrared communication.
Preferably, described charge pump also comprises feed pathway joint and liquid outlet channel joint, and wherein said feed pathway is connected to the infusion liquid source, and the cool brine after the refrigeration part refrigeration is transferred in described cold brine perfusion ablation catheter through described liquid outlet channel.Preferably, in described charge pump, be provided with filter, with the ice cube in the cool brine after the filtering refrigeration, so can guarantee that the cool brine be transferred to conduit from charge pump is liquid.
Preferably, the cool brine after the refrigeration part refrigeration is transferred in described cold brine perfusion ablation catheter through female Luer and saline connector.
Preferably, be provided with the cool brine passage in described cold brine perfusion ablation catheter, but but and comprised handle, the main paragraph curved segment sequentially connected by nearside to distally and be arranged on the ablating electrode on described curved segment, have the salt water hole on described ablating electrode, the cool brine after refrigeration is transported to described salt water hole and is sprayed onto the target spot position from it via described cool brine passage.Preferably, the near-end of described handle is provided with the buttock line socket, and described buttock line socket is wired to described radiofrequency generator with the received RF pulse energy.
According to the type of target spot tissue with melt scheme, can select different cold brine perfusion ablation catheters, but these conduits can correspondingly adopt ablating electrode and the difform curved segment of different structure.Preferably, described ablating electrode comprises tip electrode and ring electrode, and open on described tip electrode in described salt water hole.Preferably, but the distal part of described curved segment is annular ring, and described ablating electrode is the ring electrode be evenly distributed on annular ring.Preferably, but at least distal part of described curved segment is spiral section, and described ablating electrode is the ring electrode be evenly distributed on the helical circumferential of this spiral section.
The accompanying drawing explanation
In order more clearly to describe the technical solution of the utility model, below in conjunction with accompanying drawing, briefly introduce.Obviously, these accompanying drawings are only some specific embodiment that the application puts down in writing.Include but not limited to following these accompanying drawings according to of the present utility model.Hereinafter, the side that the side that the cold brine perfusion ablation catheter be take away from the operator namely approaches the target spot tissue is distally, and a side of take near the operator is namely nearside away from a side of target spot tissue.
Fig. 1 illustrates the schematic diagram according to the cold brine perfusion ablation catheter system of an embodiment of this utility model;
Fig. 2 illustrates according to a kind of cold brine perfusion ablation catheter that can be applied to cold brine perfusion ablation catheter system of the present utility model;
Fig. 3 illustrates according to the another kind of cold brine perfusion ablation catheter that can be applied to cold brine perfusion ablation catheter system of the present utility model;
Fig. 4 illustrates according to another cold brine perfusion ablation catheter that can be applied to cold brine perfusion ablation catheter system of the present utility model;
Fig. 5 illustrates the schematic diagram according to the radiofrequency generator of an embodiment of this utility model; And
Fig. 6 illustrates the schematic diagram according to the cold brine perfusion pump of an embodiment of this utility model.
The explanation of Reference numeral
1, radiofrequency generator
101, impedance display
102, impedance setting
103, time showing
104, the time is set
105, temperature shows
106, Temperature Setting
107, power shows
108, power setting
109, the radiofrequency generator on and off switch
1010, conduit line jack
1011, external electrode line jack
1012, foot-operated line jack
1013, electric discharge starts
1014, electric discharge finishes
1015, power mode
1016, temperature control mode
1017, linkage pattern
1018, radiofrequency generator interlock joint
1019, linkage pattern cool brine parameter setting module
1020, linkage pattern cool brine temperature shows
1021, linkage pattern cool brine Temperature Setting
1022, linkage pattern cool brine flow indication
1023, linkage pattern cool brine flow set
2, the cold brine perfusion ablation catheter
201, but curved segment
202, tip electrode
203, the salt water hole
204, main paragraph
205, the handle function key
206, handle
207, the buttock line socket
208, female Luer
209, the saline connector
2010, ring electrode
211, annular ring
212, ring electrode
213, the salt water hole
214, main paragraph
215, the handle function key
216, handle
217, the buttock line socket
218, female Luer
219, the saline connector
2110, but curved segment
221, spiral section
222, ring electrode
223, the salt water hole
224, main paragraph
225, the handle function key
226, handle
227, the buttock line socket
228, female Luer
229, the saline connector
3, charge pump
301, temperature shows
302, Temperature Setting
303, the refrigeration control switch
304, flow indication
305, flow set
306, integrated flow
307, integrated flow is set
308, the charge pump on and off switch
309, the liquid outlet channel joint
3010, the feed pathway joint
3011, charge pump interlock joint
3012, the Temperature Setting module
3013, parameter setting module
4, adnexa
401, external electrode
402, the external electrode connecting line
403, the conduit connecting line
404, foot-operated connecting line
405, foot-operated
406, the saline connection tube
407, the saline connection tube
408, the infusion liquid source
409, train line
The specific embodiment
In order further to understand this utility model, below in conjunction with embodiment, preferred version of the present utility model is described.These descriptions just illustrate feature and advantage of the present utility model, and unrestricted protection domain of the present utility model.
Fig. 1 illustrates the schematic diagram according to the cold brine perfusion ablation catheter system of an embodiment of this utility model, as shown in Figure 1, this system comprises: cold brine perfusion ablation catheter 2, be coupled to this conduit the radiofrequency generator 1 of radio-frequency pulse energy is provided, be connected to the charge pump 3 that this conduit 2 transmits cool brine with the flow set and/or integrated flow, wherein, described charge pump 3 comprises refrigeration part, for the temperature according to setting, cool brine is freezed, the example of this refrigeration part provides in part described in conjunction with Figure 6.
Native system can be achieved as follows useful technique effect: adopt the cool brine of low temperature to be poured into when melting, can more effectively to ablating electrode, be washed away, reduce better the temperature of electrode surface, can apply enough ablation energies, thereby depth of ablation more effectively is provided; Can look treatment and need to set according to experience the suitable cryogenic temperature of cool brine, thereby, when guaranteeing cooling and washing away and enough depth of ablation are provided, also can save the required energy expenditure of refrigeration; In addition, cold brine perfusion ablation catheter in this system can directly adopt the cold brine perfusion ablation catheter (as illustrated in Fig. 2-4) of the various models of selling on the market, needing improved is radiofrequency generator and charge pump, has reduced manufacturing cost and the production difficulty of whole system.
Described temperature and flow and/or integrated flow can directly be set on described charge pump 3; Also described radiofrequency generator 1 communication can be coupled to described charge pump 3, described temperature and flow and/or integrated flow be set on described radiofrequency generator 1, and be coupled and be transferred to described charge pump 3 via described communication.The doctor can select above any setting means as required, for example, in the situation that surgical staff abundance and these personnel are familiar with the operation of charge pump 3, perhaps in the situation that communicating by letter between radiofrequency generator 1 and charge pump 3 is coupled fault, can be responsible for coming directly to set above parameter on charge pump according to doctor's indication by personnel, make the doctor can concentrate one's energy to carry out conduit and insert, on radiofrequency generator, ablation parameter be set and execution is melted; And if skilled staff relative deficiency or radiofrequency generator 1 and the distant doctor of causing of charge pump 3 can't take into account in both situations of setting, above parameter can be set by the doctor on radiofrequency generator 1, and these parameters are coupled and are transferred to charge pump 3 for it via described communication.
Although hereinafter with the train line 409 of cable form, realized that described communication is coupled (as shown in Figure 1), this is only the illustration implementation that communication is coupled.Particularly, described communication is coupled and can realizes by wired or wireless mode, and wired mode comprises such as the cable of train line 409 and connecting, and wireless mode is selected from any in being coupled of bluetooth, radio frequency, infrared communication.Adopt wireless mode, the line in can the minimizing system, thus improve the flexibility ratio of system architecture the comfort level of raising system operation.Described system can also comprise adnexa 4, connector in adnexa 4, for example train line 409, for realizing conduit 2, radiofrequency generator 1 and charge pump 3 being coupled and/or being connected each other, adnexa 4 also comprises the external electrode 401, foot-operated 405 and corresponding connector of radiofrequency generator 1 common needs, also comprises that charge pump 3 obtains the infusion liquid source 408 of the cold brine perfusion liquid of room temperature from it.
Above-mentioned radiofrequency generator 1 can have multiple way of realization, provides an example of radiofrequency generator 1 below in conjunction with Fig. 1 and Fig. 5.
For example, described radiofrequency generator 1 comprises: switch module, mode selection module, parameter setting module.Wherein said switch module comprises on and off switch 109, electric discharge beginning 1013 and electric discharge and finishes 1014.Wherein said parameter setting module comprises: impedance setting 102 is set 104 with impedance display 101, time and is shown 107 with temperature demonstration 105, power setting 108 with power with time showing 103, Temperature Setting 106, and linkage pattern cold brine perfusion setting module 1019, described cold brine perfusion setting module 1019 comprises linkage pattern cool brine Temperature Setting 1021 and temperature demonstration 1020, cool brine flow set 1023 and flow indication 1022.Preferably, described mode selection module comprises power mode 1015, temperature control mode 1016 and linkage pattern 1017.
Referring to Fig. 1 and Fig. 5, described radiofrequency generator 1 is by the conduit line jack 1010 on wire connecting line 403 connection radiofrequency generators 1 and the buttock line socket 207 on cold brine perfusion ablation catheter 2, for cold brine perfusion ablation catheter 2 provides the radio-frequency pulse energy; Connect the external electrode line jack 1011 and external electrode 401 on radiofrequency generator 1 by external electrode connecting line 402; Connect the foot-operated line jack 1012 and foot-operated 405 on radiofrequency generator 1 by foot-operated connecting line 404.By the higher limit of " △ " key assignments impedance in impedance setting 102, by the lower limit of its " ▽ " key assignments impedance, when carrying out impedance setting, resistance value is presented on impedance display 101, the scope of impedance is at 50-1000 Ω, and preferably, the scope of impedance is at 100-500 Ω.Set the time that " △ " key in 104 and 1 electric discharge of " ▽ " key assignments radiofrequency generator are melted by the time, the scope that melts the time is regulated arbitrarily in the scope of 1-999 seconds, melt setting-up time shows in time showing 103, according to target spot position concrete in practical application and required depth of ablation, determine and melt the time accordingly.By " △ " key in Temperature Setting 106 and " ▽ " key assignments protection temperature, the protection temperature set shows in temperature shows 105.Carry out the ablation power setting by " △ " key in power setting 108 and " ▽ " key, the power set is presented at power and shows in 107.The on and off switch 109 of radiofrequency generator is controlled the power supply of whole radiofrequency generator 1.Radiofrequency generator 1 in the present embodiment has three kinds of mode of operations, is respectively power mode 1015, temperature control mode 1016 and linkage pattern 1017.Preferably, described power mode 1015 provides constant pulse power for radiofrequency generator 1, can in needs constant output radio-frequency power situation, use; Preferably, described temperature control mode 1016 provides for the taking into account of power and temperature for radiofrequency generator 1, can aspect power and temperature two, to discharge process, protected.Temperature control mode 1016 is for to be used one of maximum pattern clinically, is also the discharge mode of the radiofrequency generator 1 recommended of this utility model.Preferably, described linkage pattern 1017 is charge pump 3 and radiofrequency generator 1 linkage work, under linkage pattern, the radiofrequency generator of radiofrequency generator 1 interlock joint 1018 need be communicated by letter and is coupled with the charge pump interlock joint 3011 of charge pump 3, as example, in Fig. 1 and Fig. 6, by train line 409, couple together.Preferably, linkage pattern 1017 times, the parameter that can be charge pump 3 setting cool brines by linkage pattern cool brine parameter setting module 1019, and be coupled via described communication the parameter will set and be transferred to charge pump 3.Described parameter can comprise temperature and the flow parameter that utilizes 3 pairs of cool brine refrigeration of charge pump, and preferably can also comprise the time sequence parameter of carrying cool brine, hereinafter take the temperature of setting refrigeration and flow describes as example, but should be appreciated that, preferably, in the whole operation process of carrying out radio-frequency ablation procedure, during guiding and inserting conduit 2 and make its step in place, need to be than the cold brine perfusion of low discharge, the flow that 2-10 is set to charge pump 3 to provide larger second in advance before radio-frequency (RF) ablation starts is to continue carrying out larger flow perfusion in ablation procedure, and finish 2-10 in radio-frequency (RF) ablation and cut off the conveying of cool brine after second, in order to provide in whole operation process more comprehensively and suitable cold brine perfusion, the described parameter of cool brine also can comprise flow-time sequence parameter, the startup in each stage that this flow-time sequence parameter comprises the cool brine conveying and the flow in termination time and each stage.
Temperature and the flow of setting refrigeration of take is example, in radiofrequency generator 1, the temperature of the cool brine by " △ " key in linkage pattern cool brine Temperature Setting 1021 and the required perfusion of " ▽ " key assignments, the temperature of described cool brine can be-20-20 ℃, preferably, the temperature of cold brine perfusion liquid is-10-10 ℃; For heart radio frequency ablation and renal artery ablation applications, preferably, the temperature of cold brine perfusion liquid is 0-8 ℃.Preferably, in cold brine perfusion ablation catheter system, with the material that contact of cool brine after refrigeration, all adopt the material of tolerance low temperature to prepare, these materials can be selected from any in the block copolymer, polyethylene, polypropylene, rustless steel, platinumiridio, gold, silver, Nitinol of polyurethane, polyethers, polyamide.
The charge pump 3 of cool brine can adopt multiple implementation, and Fig. 1 and Fig. 6 show an example of charge pump 3.For example, charge pump 3 can comprise: refrigeration part (not shown in FIG.), flow regulating part (not shown in FIG.) and the related accessories of Temperature Setting module 3012, flow set module 3013, control module (not shown in FIG.), inside.Described control module is coupled to Temperature Setting module 3012 and flow set module 3013, to receive the temperature of expression setting and the data signal of flow from it respectively; Also be coupled to described refrigeration part and flow regulating part, to be used for respectively the control signal of refrigeration and Flow-rate adjustment to its transmission.
Described flow regulating part is for regulating the flow of normal saline, and the stability of flow that can keep normal saline is on the flow set.As example, described flow regulating part can realize by control valve, and described control valve receives from the control signal for Flow-rate adjustment of control module output, removes to change fluid flow by power operation accordingly.Control valve generally is comprised of actuator and valve, and described valve can adopt pneumatic operated valve, electrodynamic valve, hydraulic operated valve, electromagnetic valve etc.Described refrigeration part can adopt multiple different structure.As example, described refrigeration part comprises five parts, is respectively compressor, condenser, expansion valve (i.e. " choke valve "), vaporizer and connecting pipe.Liquid refrigerant, be preferably fluorine Lyons, absorb the heat of normal saline in vaporizer after, be vaporized into the steam of low-temp low-pressure, described fluorine Lyons is compressed into eductor condenser after the steam of High Temperature High Pressure, in condenser to the cooling water heat release, be condensed into highly pressurised liquid, become fluorine Lyons of low-pressure low-temperature through the choke valve throttling, again enter vaporizer heat absorption vaporization, reach the purpose of circularly cooling.Like this, fluorine Lyons completes a kind of refrigeration cycle through pervaporation, compression, condensation, four basic processes of throttling in refrigeration system.Normal saline is after the refrigeration system refrigeration, reach the temperature of setting, particularly, from control module to refrigeration part, transmission is for the control signal of refrigeration, the control signal of described refrigeration can form the power of various piece of refrigeration part and flow etc. by adjusting, and normal saline is realized to required refrigeration.Normal saline after may freezing in practice departs from the situation of design temperature a little.Preferably, in the stream of the normal saline after refrigeration, be provided with: temperature sensor, for the temperature of Real-Time Monitoring normal saline; And the thermoregulation module, during for the temperature in monitoring and design temperature generation deviation, adjust the temperature to design temperature.Described related accessories comprises: charge pump on and off switch 308, liquid outlet channel joint 309, feed pathway joint 3010, wherein said feed pathway joint 3010 for example, is connected to infusion liquid source 408 via feed pathway (the saline connection tube 407) and receives the room temperature cool brine without refrigeration from it, and the cool brine after the refrigeration part refrigeration for example, is transferred in described cold brine perfusion ablation catheter 2 through described liquid outlet channel joint 3010 and the liquid outlet channel (the saline connection tube 406) be attached thereto.
Described Temperature Setting module 3012 comprises: refrigeration control switch 303, Temperature Setting 302, temperature show 301, described refrigeration part can be freezed to cool brine according to the cryogenic temperature of setting on Temperature Setting 302, and temperature shows 301 temperature that demonstration sets by Temperature Setting 302.Described flow set module 3013 comprises: flow set 305, flow indication 304, optional integrated flow setting 307 and optional integrated flow show 306, and flow indication 304 shows the flow set by flow set 305.Described flow regulating part is regulated the flow of the cool brine after transmission is freezed according to the flow of setting on flow set 305.
Preferably, charge pump 3 comprise the effusion meter (not shown) measure the transmission cool brine real-time traffic, and comprise with the crew-served flow totalizer (not shown) of effusion meter and calculate integrated flow, when it reaches the integrated flow of setting in integrated flow setting 307, can remind the transmission that stops manually or automatically cool brine, this termination can realize in several ways, and for example the powered-down switch 308, or turn-offs liquid outlet channel joint 309 etc.
Preferably, charge pump 3 contains filter (in figure indicate) can filter out charge pump 3 saline ice cube wherein, thereby guarantees that the cool brine after refrigeration is liquid, and can be in the infusion liquid passage circulate.
Illustrated in Fig. 6 the cryogenic temperature of cool brine and flow and/or integrated flow are set, this is as just example.As being for 1017 times above the explanation of the parameter of the cool brine set of charge pump 3 on radiofrequency generator 1 to linkage pattern, in order to provide in whole operation process more comprehensively and suitable cold brine perfusion, the described parameter of the cool brine of directly setting on charge pump 3 also can comprise flow-time sequence parameter, the startup in each stage that this flow-time sequence parameter comprises the cool brine conveying and the flow in termination time and each stage.If also need to set the flow-time sequence parameter of cool brine, the radiofrequency generator 1 of above describing and the formation of charge pump 3 need be adjusted accordingly.For example, in charge pump 3, flow set module 3013 is modified to flow-sequential setting module, and control module receives from it data signal that means flow-sequential; The co-current flow amount is regulated the control signal that the parts transmission is regulated for flow-sequential, and in addition, flow regulating part makes the normal saline after refrigeration have the flow-timing distribution set.In addition, the flow relevant parameter of the cool brine set can be according to the demand of radio-frequency (RF) ablation, select at least one in flow, integrated flow and flow-sequential, can be adjusted accordingly the radiofrequency generator 1 of above description and the formation of charge pump 3 according to selection result.
Can adopt polytype according to the cold brine perfusion ablation catheter 2 in cold brine perfusion ablation catheter system of the present utility model.
As depicted in figs. 1 and 2, can be applicable to be provided with the cool brine passage in a kind of cold brine perfusion ablation catheter 2 of this system, but but and comprised handle 206, main paragraph 204 curved segments 201 that sequentially connect by nearside to distally and be arranged on the ablating electrode on described curved segment 201.Preferably, as shown in Figure 2, described ablating electrode comprises tip electrode 202 and ring electrode 2010, have salt water hole 203 on described tip electrode 202, the quantity in described salt water hole 203 is 7-80, and diameter is 0.02-0.5mm, preferably, 60 salt water holes 203 are arranged on tip electrode 202, and the diameter in described salt water hole is 0.08mm.Preferably, the conduit 2 that only is provided with tip electrode 202 in Fig. 1 is applicable to not need to extract the situation of the signal of telecommunication in human body, is typically applied in renal artery denervation radio-frequency (RF) ablation.Preferably, conduit shown in Fig. 2 is applicable to need to extract the situation of the signal of telecommunication in human body, be typically applied in radio-frequency (RF) ablation in heart, specifically apply including but not limited to ARR radio-frequency (RF) ablation in ARR radio-frequency (RF) ablation, ventricle in atrium and pulmonary artery radio-frequency (RF) ablation and pulmonary vein radio-frequency (RF) ablation.Wherein, preferably, salt water hole 203 is divided into 8 rows and distributes, and every salt discharge water hole 203 has 7, the top of tip electrode 202 have in 4 salt water hole 203(figure indicate).Room temperature cool brine in infusion liquid source 408 is after saline connection tube 407, send into charge pump 3, the cryogenic temperature that charge pump 3 is set on Temperature Setting module 3012 via refrigeration part basis wherein, by room temperature cool brine refrigeration, it is the cool brine of zero degree, and, according to flow and/or integrated flow and/or the flow-time sequence parameter set on charge pump 3 or radiofrequency generator 1, the cool brine after refrigeration is transported in cold brine perfusion ablation catheter 2.Cool brine after refrigeration passes through (can arrange also and can not be arranged in cold brine perfusion ablation catheter 2) female Luer 208 and saline connector 209 successively, handle 206 in cold brine perfusion ablation catheter 2, but the cool brine passage in main paragraph 204 and curved segment 201 (not indicating in figure) arrives tip electrode 202, then the salt water hole 203 from tip electrode 202 is sprayed onto the target spot position of appointment in human body equably, when radio-frequency (RF) ablation, can effectively take away the heat on tip electrode 202, under the premise that security is guaranteed, cool brine after refrigeration can be better than the normal saline of room temperature greatly for the cooling-down effect of tip electrode.Make when electric discharge is melted, the temperature that melts the target spot position can be not too high, temperature can be remained on to 27 ℃ of left and right, and this temperature greatly reduces the application risk of radio-frequency (RF) ablation and improves patient's comfort level lower than 37 ℃ of the normal body temperatures of human body.When 27 ℃ of temperature, the surface of tip electrode 202 can not form incrustation, can greatly reduce tip electrode 202 surfaces and form the thrombosis risk.Remain under 27 ℃ of prerequisites melting the target spot temperature, the increased power 10%-50% that cold brine perfusion ablation catheter system described in the utility model can be used than traditional perfusion of saline ablation catheter, thus can guarantee sufficient depth of ablation and then guarantee the therapeutic effect of ablative surgery.
Fig. 3 shows another kind of cold brine perfusion ablation catheter 2, with conduit difference shown in Fig. 1 and Fig. 2, mainly be, but the distal part of the curved segment 2110 of this conduit is annular ring 211, and described ablating electrode is ring electrode 212, be evenly distributed on annular ring 211, have salt water hole 213 on ring electrode 212.Preferably, the quantity in described salt water hole is 12, is divided into 2 rows and distributes, two row's malposition of electrode arranged distribution.Shown in the diameter in salt water hole 213 be 0.2mm.But described curved segment 2110 can realize that control is curved by the handle function key 215 on handle 216.The near-end of handle 216 is provided with: buttock line socket 217, for by wire 403(as shown in Figure 1) be connected to radiofrequency generator 1 with the received RF pulse energy; And female Luer 218 and saline connector 219, for connecting charge pump 3, cool brine after refrigeration is delivered on ring electrode 212 through the cool brine passage in cold brine perfusion ablation catheter 2 (not indicating in figure), then from salt water hole 213, is sprayed onto equably the target spot tissue.
Fig. 4 shows another cold brine perfusion ablation catheter 2, with conduit difference shown in Fig. 1 and Fig. 2, be, but at least distal part of described curved segment is spiral section 221, described ablating electrode is the ring electrode 222 be evenly distributed on the helical circumferential of spiral section 221, on described ring electrode 222, has salt water hole 223.Preferably, the quantity in the salt water hole 223 on described ring electrode 222 is 40, is divided into 4 rows and distributes, and every row is evenly distributed with 10 salt water holes, and adjacent two salt discharge water holes 223 are dislocation arrangement.Preferably, the diameter in each salt water hole 223 is 0.1mm.Utilize the cool brine after charge pump 3 freezes, but the salt aquaporin (not indicating in figure) passed through successively in female Luer 228, saline connector 229, handle 226, main paragraph 224 and curved segment is delivered on ring electrode 222, then from salt water hole 223, is sprayed at equably the target spot tissue.When this system melts, the target spot temperature can be reduced to 35 ℃ of left and right, is in close proximity to 37 ℃ of body temperatures, greatly reduces ring electrode 222 surface incrustation risks, improves success rate of operation.
As shown in Figure 1, Figure 2, Figure 3, Figure 4, cold brine perfusion ablation catheter 2 all adopts same connected mode in system.The applicable cold brine perfusion ablation catheter of cold brine perfusion ablation catheter system described in the utility model is including but not limited to the conduit described in the present embodiment.The electrophysiologicalcatheter catheter of other similar application is applicable equally.
This utility model is not limited to the particular content described in the specific embodiment.This utility model provides a kind of cold brine perfusion ablation catheter system, can be applied to electrophysiologicalcatheter catheter, preferably, be applicable to heart cold brine perfusion type radio frequency ablation catheter, renal artery cold brine perfusion type radio frequency ablation catheter, pulmonary artery cold brine perfusion type radio frequency ablation catheter, pulmonary vein cold brine perfusion type radio frequency ablation catheter.Equally, cold brine perfusion ablation catheter system described in the utility model also is applicable to the disease treatment in body vessels, tissue, such as cervical cancer cold brine perfusion type radio frequency ablation catheter etc.
The explanation of above embodiment is just for helping to understand core concept of the present utility model.Should be understood that; for the ordinary skill in the art; under the prerequisite that does not break away from this utility model principle, can also carry out some improvement and modification to this utility model, but these improvement and modify also fall in the scope that this utility model claim asks for protection.
Claims (11)
1. a cold brine perfusion ablation catheter system, comprise the cold brine perfusion ablation catheter, be coupled to this conduit the radiofrequency generator of radio-frequency pulse energy is provided, be connected to the charge pump that this conduit transmits cool brine, it is characterized in that:
Described charge pump comprises the Temperature Setting module; Perhaps, described radiofrequency generator comprises described Temperature Setting module, and communication be coupled to described charge pump, the temperature set is coupled and is transferred to described charge pump via described communication; And
Described charge pump comprises the refrigeration part according to the temperature refrigeration of setting to cool brine.
2. cold brine perfusion ablation catheter system according to claim 1, is characterized in that, described charge pump also comprises the setting module of at least one parameter in flow, flow-sequential and integrated flow; Perhaps described radiofrequency generator comprises the setting module of at least one parameter in described flow, flow-sequential and integrated flow, and at least one parameter set is coupled and is transferred to described charge pump via described communication.
3. cold brine perfusion ablation catheter system according to claim 1, it is characterized in that, described charge pump also comprises feed pathway joint and liquid outlet channel joint, wherein said feed pathway is connected to the infusion liquid source, and the cool brine after the refrigeration part refrigeration is transferred in described cold brine perfusion ablation catheter through described liquid outlet channel.
4. cold brine perfusion ablation catheter system according to claim 1, is characterized in that, in described charge pump, is provided with filter, with the ice cube in the cool brine after the filtering refrigeration.
5. cold brine perfusion ablation catheter system according to claim 1, is characterized in that, the cool brine after the refrigeration part refrigeration is transferred in described cold brine perfusion ablation catheter through female Luer and saline connector.
6. cold brine perfusion ablation catheter system according to claim 1, it is characterized in that, described communication is coupled by wired or wireless mode and realizes, wired mode comprises that cable connects, and wireless mode is selected from any in being coupled of bluetooth, radio frequency, infrared communication.
7. cold brine perfusion ablation catheter system according to claim 1, it is characterized in that, be provided with the cool brine passage in described cold brine perfusion ablation catheter, but but and comprised handle, the main paragraph curved segment sequentially connected by nearside to distally and be arranged on the ablating electrode on described curved segment, have the salt water hole on described ablating electrode, the cool brine after refrigeration is transported to described salt water hole and is sprayed onto the target spot position from it via described cool brine passage.
8. cold brine perfusion ablation catheter system according to claim 7, is characterized in that, described ablating electrode comprises tip electrode and ring electrode, and open on described tip electrode in described salt water hole.
9. cold brine perfusion ablation catheter system according to claim 7, is characterized in that, but the distal part of described curved segment is annular ring, and described ablating electrode is the ring electrode be evenly distributed on annular ring.
10. cold brine perfusion ablation catheter system according to claim 7, is characterized in that, but at least distal part of described curved segment is spiral section, and described ablating electrode is the ring electrode be evenly distributed on the helical circumferential of this spiral section.
11. cold brine perfusion ablation catheter system according to claim 7, is characterized in that, the quantity in described salt water hole is 7-80, and the diameter in described salt water hole is 0.02-0.5mm.
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| CN 201320384563 CN203341811U (en) | 2013-06-28 | 2013-06-28 | Cold saline perfusion ablation catheter system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104068871A (en) * | 2014-07-25 | 2014-10-01 | 宁波迈达医疗仪器有限公司 | Water perfusion type intra-cavity power detector with automatic constant-pressure control function |
| CN104873265A (en) * | 2015-06-02 | 2015-09-02 | 北京迈迪顶峰医疗科技有限公司 | Freezing ablation system |
| CN110897712A (en) * | 2019-12-28 | 2020-03-24 | 苏州海普特斯医疗科技有限公司 | Cold saline perfusion radio frequency ablation forceps with controllable clamping force |
| US10842560B2 (en) | 2017-09-08 | 2020-11-24 | Zidan Medical Inc. | Devices and methods for treating lung tumors |
| CN112791262A (en) * | 2020-12-31 | 2021-05-14 | 杭州堃博生物科技有限公司 | Radio frequency operation data regulation and control method and device and injection pump |
| CN114288009A (en) * | 2021-12-31 | 2022-04-08 | 上海阿法钛医疗器械有限公司 | Cold saline water pulse electric field radio frequency ablation catheter |
| CN114343833A (en) * | 2021-11-29 | 2022-04-15 | 苏州艾科脉医疗技术有限公司 | Ablation catheter |
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2013
- 2013-06-28 CN CN 201320384563 patent/CN203341811U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104068871A (en) * | 2014-07-25 | 2014-10-01 | 宁波迈达医疗仪器有限公司 | Water perfusion type intra-cavity power detector with automatic constant-pressure control function |
| CN104068871B (en) * | 2014-07-25 | 2017-04-19 | 宁波迈达医疗仪器有限公司 | Water perfusion type intra-cavity power detector with automatic constant-pressure control function |
| CN104873265A (en) * | 2015-06-02 | 2015-09-02 | 北京迈迪顶峰医疗科技有限公司 | Freezing ablation system |
| US10842560B2 (en) | 2017-09-08 | 2020-11-24 | Zidan Medical Inc. | Devices and methods for treating lung tumors |
| US11925409B2 (en) | 2017-09-08 | 2024-03-12 | Zidan Medical Inc. | Devices and methods for treating lung tumors |
| CN110897712A (en) * | 2019-12-28 | 2020-03-24 | 苏州海普特斯医疗科技有限公司 | Cold saline perfusion radio frequency ablation forceps with controllable clamping force |
| CN112791262A (en) * | 2020-12-31 | 2021-05-14 | 杭州堃博生物科技有限公司 | Radio frequency operation data regulation and control method and device and injection pump |
| CN114343833A (en) * | 2021-11-29 | 2022-04-15 | 苏州艾科脉医疗技术有限公司 | Ablation catheter |
| CN114288009A (en) * | 2021-12-31 | 2022-04-08 | 上海阿法钛医疗器械有限公司 | Cold saline water pulse electric field radio frequency ablation catheter |
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