CN103893902A - Liquid exchange catheter - Google Patents
Liquid exchange catheter Download PDFInfo
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- CN103893902A CN103893902A CN201210577431.5A CN201210577431A CN103893902A CN 103893902 A CN103893902 A CN 103893902A CN 201210577431 A CN201210577431 A CN 201210577431A CN 103893902 A CN103893902 A CN 103893902A
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Abstract
The invention discloses a liquid exchange catheter which comprises a catheter body, an electrode, an electrode wire and an infusion tube. The electrode is arranged on the catheter body, the electrode is connected with the electrode wire, the electrode is provided with a communication opening, an opening which enables the electrode to make contact with focus tissue is arranged on a position, where the electrode is located, of the catheter body, the infusion tube is arranged in an inner cavity of the catheter body, and perfusion fluid flowing out of the infusion tube flows through the surface of the focus tissue through the opening. The catheter further comprises a water return pipe which draws out fluid flowing through the focus tissue to achieve the effect of lowering the temperature of the electrode and the temperature of the focus tissue, no incrustation exists, blood clots can not be easily formed, the ablation depth is larger, complications can be effectively avoided, and the purpose of better treatment is achieved.
Description
Technical field
The present invention relates to a kind of electrophysiologicalcatheter catheter, particularly a kind of fluid exchange conduit.
Background technology
There is the treatment mechanism melting with the electrode of cutting function and be mainly heat effect.The rf wave of electrode is the electromagnetic wave in particular range in essence.Medical radio-frequency adopts the frequency of 200KHz to 750KHz mostly at present.(scope) radio-frequency therapeutic equipment operating frequency is 400 to 460KHz.In the time that the radio-frequency current of electrode is flowed through tissue, because the quick variation of electromagnetic field makes intracellular positive and negative ion rapid movement, so between them and the friction of they and intracellular other molecule, ion etc. diseased region is heated up, cause lesion tissue bland necrosis, thereby reach the object for the treatment of.
There is in the prior art the electrode of filling type, by lesion tissue surface perfusion saline fluid, maintain on the one hand lower organizational interface's temperature; Increase on the other hand heat-conduction effect, make to produce more greatly at lesion tissue position, darker tissue injury.But too much spraying normal saline can increase kidney burden, causes the generation of complication.
Therefore, need fluid exchange conduit, utilize this conduit, can spray normal saline to lesion tissue position, in maintaining lower lesion tissue position temperature, increase heat-conduction effect, simultaneously, this conduit can be in reaching darker depth of ablation, solve again normal saline leftover problem, avoided complications, reached better therapeutic purposes.
Summary of the invention
The object of the invention is to overcome existing above-mentioned deficiency in prior art, a kind of fluid exchange conduit is provided, this fluid exchange conduit has reached darker depth of ablation, has improved curative effect, has avoided the generation of complication.
In order to realize foregoing invention object, the invention provides following technical scheme:
A kind of fluid exchange conduit, comprise catheter tube, electrode, electrode cable, intrusion pipe and return pipe, electrode is arranged on catheter tube, electrode is connected with electrode cable, electrode has connected entrance, the position on catheter tube with electrode is provided with the opening that electrode is contacted with lesion tissue, and intrusion pipe is arranged in conduit, and the infusion liquid that intrusion pipe flows out is by the described opening lesion tissue surface of flowing through; Described conduit also comprises return pipe, and return pipe is taken the infusion liquid on the lesion tissue surface of flowing through away.
The above-mentioned technical characterictic of fluid exchange conduit makes electrode can touch lesion tissue, and can be to lesion tissue surface sprinkling infusion liquid, reduce electrode and melted lesion tissue surface temperature, reach darker depth of ablation, improve curative effect, avoided the generation of complication.
Infusion liquid is poured in lesion tissue surface by intrusion pipe, although can improve the therapeutic effect of electrode pair lesion tissue, and, infusion liquid enters blood in a large number, can increase the burden of kidney, has increased the probability that complication produces.So return pipe is extracted the infusion liquid on lesion tissue surface out, can avoid the generation of above-mentioned situation, better guarantees therapeutic effect.
The inner chamber of body is made up of a chamber or more than one chamber.
Described return pipe is arranged in catheter tube, can contact with lesion tissue, and the water inlet end of described return pipe is taken infusion liquid away from lesion tissue surface outside electrode.
Return pipe is taken the infusion liquid of cooling lesion tissue away, far and away, return pipe water inlet end is arranged near lesion tissue, can better complete above-mentioned technical problem, so, return pipe is arranged on on catheter tube, to contact with lesion tissue be a good solution, the water inlet end of return pipe directly contacts with lesion tissue, take infusion liquid away by water inlet end, reduced the temperature on lesion tissue surface.
Described conduit also comprises temperature sensor, and temperature sensor is arranged in catheter tube and contacts with electrode, and temperature sensor is connected with temperature sensor lead.
Between described opening, be communicated with.
Owing to being provided with at least one opening on catheter tube, between opening, be communicated with, return pipe can be taken infusion liquid away to each opening, will make the infusion liquid on the outer lesion tissue of each opening surface take away, alleviates the burden of kidney, prevents the generation of complication.
Described electrode is single electrode, and described connected entrance is gap or through hole, and described gap or through hole are conduit cavity and outside gap or the through hole being communicated with.
Between single electrode and catheter tube, have gap or through hole, this gap or through hole are conduit cavity and extraneous gap or the through hole being communicated with, and infusion liquid can be from this gap or the through hole lesion tissue surface of flowing through.
Described electrode is flexible circuit electrode, and described connected entrance is groove or through hole.
The water outlet port of described intrusion pipe is arranged on electrode place, and the infusion liquid that water outlet port flows out is via described connected entrance and by the described opening lesion tissue of flowing through.
Catheter tube can be made various geometric figures, such as: the various geometries such as linear, shaped form, annular, spiral type.
compared with prior art, beneficial effect of the present invention:
In guaranteeing depth of ablation, the infusion liquid on lesion tissue surface is taken away, alleviate the burden of kidney, avoid the generation of complication.
Accompanying drawing explanation
Fig. 1 is the cut-away view that conduit embodiment is adsorbed in the present invention.
Fig. 2 is the structure chart of the embodiment of the present invention 2.
Fig. 3 is the structure chart of the embodiment of the present invention 3.
Fig. 4 is the structure chart of the embodiment of the present invention 4.
Fig. 5 is the structure chart of further embodiment of this invention.
Fig. 6 is the structure chart of yet another embodiment of the invention.
Fig. 7 and Fig. 8 are that the present invention pours into the end view of absorption conduit at an embodiment of end enforcement perfusion absorption.
Fig. 9 and Figure 10 are that the present invention pours into the end view of absorption conduit at another embodiment of end enforcement perfusion absorption.
Figure 11 is the cutaway view of catheter interior structure.
The specific embodiment
Below in conjunction with test example and the specific embodiment, the present invention is described in further detail.But this should be interpreted as to the scope of the above-mentioned theme of the present invention only limits to following embodiment, all technology realizing based on content of the present invention all belong to scope of the present invention.
Embodiments of the invention, as shown in Figure 1, a kind of fluid exchange conduit, comprises catheter tube 1, electrode 2, electrode cable 3, intrusion pipe 4 and return pipe 11.There is the traction fiber 12 of controlling guiding-tube bend catheter tube 1 inside, for keeping the braided steel wire 13 of catheter shape, electrode 2 is arranged on catheter tube 1, electrode 2 is connected with electrode cable 3, electrode 2 has connectivity part, the position on catheter tube 1 with electrode 2 is provided with the opening that electrode 2 is contacted with lesion tissue, and intrusion pipe 4 is arranged in catheter tube 1, and the infusion liquid that intrusion pipe 4 flows out is by the described opening lesion tissue surface of flowing through; The above-mentioned technical characterictic of fluid exchange conduit makes electrode 2 can touch lesion tissue surface, and can be to lesion tissue surface sprinkling infusion liquid, reduces electrode 2 and is melted lesion tissue surface temperature, avoids producing thrombosis or incrustation.The conduit of the present embodiment also comprises return pipe 11, and return pipe 11 is taken the infusion liquid of the lesion tissue of flowing through away.
Infusion liquid is sprayed onto lesion tissue surface by intrusion pipe 4, although can improve the therapeutic effect of electrode pair lesion tissue, and, infusion liquid enters blood in a large number, can increase the burden of kidney, has increased the probability that complication produces.So return pipe is extracted the infusion liquid on lesion tissue surface out, can avoid the generation of above-mentioned situation, better guarantees therapeutic effect.
Preferably, the inner chamber of body is made up of a chamber or more than one chamber.
Described return pipe 11 is arranged in catheter tube, and its water inlet end can contact with lesion tissue, and the water inlet end of described return pipe is taken infusion liquid away from lesion tissue surface outside electrode.
Described conduit also comprises temperature sensor, and temperature sensor is arranged in catheter tube and the position contacting with electrode, and temperature sensor is connected with temperature sensor lead.
Preferably, between described opening, be communicated with.
Owing to being provided with at least one opening on catheter tube, between opening, be communicated with, return pipe 11 can be taken infusion liquid away to each opening, will make the infusion liquid on the outer lesion tissue of each opening surface take away, alleviates the burden of kidney, prevents the generation of complication.
In the present embodiment, described conduit also comprises adsorption sleeve, and adsorption sleeve suit is arranged on body 2 and has another opening 8 matching with opening 7.
Described electrode is single electrode, and described connectivity part is gap or through hole, and described gap or through hole are conduit cavity and outside gap or the through hole being communicated with.
Unipolar gap or through hole, this gap or through hole are conduit cavity and extraneous gap or the through hole being communicated with, infusion liquid can be from this gap or through hole be sprayed onto lesion tissue surface.
Described electrode is flexible circuit electrode, and described connectivity part is groove or through hole.
The water outlet port of described intrusion pipe is arranged on electrode place, and the infusion liquid that water outlet port sprays is via described connected entrance and by described opening and another opening lesion tissue surface of flowing through.
Catheter tube can be made various geometric figures, such as: the various geometries such as linear, shaped form, annular, spiral type.
Embodiments of the invention, as shown in Figure 7 and Figure 8, comprise conduit, end of conduit is provided with electrode tip and opening, and opening is outside electrode tip is exposed to, and intrusion pipe is communicated with the connectivity part on electrode tip, this connectivity part can be the gap between through hole, electrode retaining collar, helix gap on electrode, groove on electrode etc., the concrete form of situation as shown in Fig. 8-15 but shown in being not limited to.Infusion liquid is sprayed by connectivity part, is being extracted out by water pipe by body opening part.
Embodiments of the invention, as shown in Figure 9 and Figure 10, comprise conduit, end of conduit is provided with electrode tip and opening, and opening is outside electrode tip is exposed to, and return pipe is communicated with the water inlet port on electrode tip, this water inlet port can be the gap between through hole, electrode retaining collar, helix gap on electrode, groove on electrode etc., the concrete form of situation as shown in Fig. 8-15 but shown in being not limited to.Intrusion pipe is positioned at body, and infusion liquid is sprayed by opening part, is being extracted out by return pipe through water inlet port.
One embodiment of the present of invention distal end of catheter can be spiral helicine, can melt use for orifices of pulmonary veins, the catheter tube 1 of far-end is distributed with wire-winding electrode above, and intrusion pipe, the return pipe inner with it of the gap on wire-winding electrode is communicated with, and realizes the function of spraying and adsorbing infusion liquid.
Disclosed all features in this description, except mutually exclusive feature and/or step, all can combine by any way.
Disclosed arbitrary feature in this description (comprising any accessory claim, summary and accompanying drawing), unless narration especially all can be replaced by other equivalences or the alternative features with similar object.,, unless narration especially, each feature is an example in a series of equivalences or similar characteristics.
The present invention is not limited to the aforesaid specific embodiment.The present invention expands to any new feature or any new combination disclosing in this manual, and the arbitrary new method disclosing or step or any new combination of process.
Claims (8)
1. a fluid exchange conduit, comprise catheter tube, electrode, electrode cable, intrusion pipe and return pipe, electrode is arranged on catheter tube, electrode is connected with electrode cable, the position on catheter tube with electrode is provided with the opening that is communicated with intrusion pipe and lesion tissue, intrusion pipe is arranged in conduit, and the infusion liquid that intrusion pipe flows out is by the described opening lesion tissue surface of flowing through;
It is characterized in that, described conduit also comprises return pipe, and return pipe is taken the liquid of the lesion tissue of flowing through away.
2. conduit as claimed in claim 1, is characterized in that, described return pipe is arranged in catheter tube, and return pipe water inlet end is positioned at the position that can contact with lesion tissue, and the water inlet end of described return pipe is taken infusion liquid away from lesion tissue surface.
3. conduit as claimed in claim 1, is characterized in that, described conduit also comprises temperature sensor, the position that temperature sensor is arranged on catheter tube inner chamber and contacts with electrode inner side, and temperature sensor is connected with temperature sensor lead.
4. conduit as claimed in claim 1, is characterized in that, described opening is several, and is communicated with between opening.
5. conduit as claimed in claim 1, is characterized in that, described electrode is single electrode, and described opening is gap or the through hole on electrode.
6. conduit as claimed in claim 1, is characterized in that, described electrode is flexible circuit electrode, and described connected entrance is groove or through hole.
7. conduit as claimed in claim 1, is characterized in that, described opening is arranged on electrode place.
8. conduit according to claim 1, is characterized in that: the geometric figure of catheter tube is one or more the combination in following: linear, shaped form, annular, spiral type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210577431.5A CN103893902B (en) | 2012-12-27 | 2012-12-27 | Fluid exchange conduit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210577431.5A CN103893902B (en) | 2012-12-27 | 2012-12-27 | Fluid exchange conduit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103893902A true CN103893902A (en) | 2014-07-02 |
| CN103893902B CN103893902B (en) | 2016-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210577431.5A Active CN103893902B (en) | 2012-12-27 | 2012-12-27 | Fluid exchange conduit |
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| CN (1) | CN103893902B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5913854A (en) * | 1997-02-04 | 1999-06-22 | Medtronic, Inc. | Fluid cooled ablation catheter and method for making |
| US6171275B1 (en) * | 1998-12-03 | 2001-01-09 | Cordis Webster, Inc. | Irrigated split tip electrode catheter |
| US20060178666A1 (en) * | 2001-08-03 | 2006-08-10 | Cosman Eric R | Over-the-wire high frequency electrode |
| CN102119009A (en) * | 2008-07-15 | 2011-07-06 | 凯斯费特股份有限公司 | Catheter and method for improved ablation |
| CN102429725A (en) * | 2011-12-14 | 2012-05-02 | 四川锦江电子科技有限公司 | Electrophysiological electrode capable of spraying liquid |
| CN102631240A (en) * | 2012-04-13 | 2012-08-15 | 上海微创电生理医疗科技有限公司 | Cold brine infusion type radiofrequency ablation catheter |
| CN102688090A (en) * | 2012-04-29 | 2012-09-26 | 殷跃辉 | Bidirectionally controllable saline-perfusion renal artery radiofrequency ablation catheter |
| CN102772251A (en) * | 2012-06-28 | 2012-11-14 | 王兴林 | Ablation adsorption electrode |
-
2012
- 2012-12-27 CN CN201210577431.5A patent/CN103893902B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5913854A (en) * | 1997-02-04 | 1999-06-22 | Medtronic, Inc. | Fluid cooled ablation catheter and method for making |
| US6171275B1 (en) * | 1998-12-03 | 2001-01-09 | Cordis Webster, Inc. | Irrigated split tip electrode catheter |
| US20060178666A1 (en) * | 2001-08-03 | 2006-08-10 | Cosman Eric R | Over-the-wire high frequency electrode |
| CN102119009A (en) * | 2008-07-15 | 2011-07-06 | 凯斯费特股份有限公司 | Catheter and method for improved ablation |
| CN102429725A (en) * | 2011-12-14 | 2012-05-02 | 四川锦江电子科技有限公司 | Electrophysiological electrode capable of spraying liquid |
| CN102631240A (en) * | 2012-04-13 | 2012-08-15 | 上海微创电生理医疗科技有限公司 | Cold brine infusion type radiofrequency ablation catheter |
| CN102688090A (en) * | 2012-04-29 | 2012-09-26 | 殷跃辉 | Bidirectionally controllable saline-perfusion renal artery radiofrequency ablation catheter |
| CN102772251A (en) * | 2012-06-28 | 2012-11-14 | 王兴林 | Ablation adsorption electrode |
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| Publication number | Publication date |
|---|---|
| CN103893902B (en) | 2016-12-28 |
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Address after: No. 5, Wuke East 3rd Road, Wuhou District, Chengdu, Sichuan 610000 Patentee after: Sichuan Jinjiang Electronic Medical Device Technology Co.,Ltd. Address before: No. 5, Wuke East 3rd Road, Wuhou District, Chengdu, Sichuan 610000 Patentee before: SICHUAN JINJIANG ELECTRONIC SCIENCE AND TECHNOLOGY Co.,Ltd. |
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