CN103893902B - Fluid exchange conduit - Google Patents
Fluid exchange conduit Download PDFInfo
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- CN103893902B CN103893902B CN201210577431.5A CN201210577431A CN103893902B CN 103893902 B CN103893902 B CN 103893902B CN 201210577431 A CN201210577431 A CN 201210577431A CN 103893902 B CN103893902 B CN 103893902B
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Abstract
The invention discloses a kind of fluid exchange conduit.A kind of fluid exchange conduit of disclosure of the invention, including catheter tube, electrode, electrode cable and intrusion 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 making electrode contact with lesion tissue, and intrusion pipe is arranged on catheter tube inner chamber, and the infusion liquid that intrusion pipe flows out flows through lesion tissue surface by described opening；Described conduit also includes return pipe, return pipe will flow through the liquid of lesion tissue and extract out, it is achieved reduce electrode and the effect of lesion tissue temperature, and do not form a scab, not to be easily formed thrombosis, depth of ablation deeper, and effectively avoid the generation of complication, reach more preferable therapeutic purposes.
Description
Technical field
The present invention relates to a kind of electrophysiologicalcatheter catheter, particularly to a kind of fluid exchange conduit.
Background technology
Have and melt the cure mechanism of the electrode with cutting function and be mainly heat effect.The rf wave of electrode is substantially the electromagnetic wave in particular range.Medical radio-frequency uses the frequency of 200KHz to 750KHz mostly at present.(scope) radio-frequency therapeutic equipment operating frequency is 400 to 460KHz.When the radio-frequency current of electrode flows through tissue, because the Rapid Variable Design of electromagnetic field makes intracellular positive and negative ion rapid movement, then between them and they frictions with intracellular other molecule, ion etc. make diseased region heat up, cause lesion tissue bland necrosis, thus reach the purpose for the treatment of.
There is the electrode of filling type in the prior art, by irrigating saline fluid to lesion tissue surface, on the one hand maintain relatively low organizational interface's temperature；On the other hand increase heat-conduction effect, make to produce at lesion tissue position tissue injury bigger, deeper.But, too much spraying normal saline can increase kidney burden, causes the generation of complication.
Therefore, need fluid exchange conduit, utilize this conduit, normal saline can be sprayed to lesion tissue position, while maintaining relatively low lesion tissue spot temperature, increase heat-conduction effect, simultaneously, this conduit can be while reaching deeper depth of ablation, solve again normal saline leftover problem, it is to avoid complications, reach more preferable therapeutic purposes.
Summary of the invention
It is an object of the invention to overcome the above-mentioned deficiency in the presence of prior art, it is provided that a kind of fluid exchange conduit, this fluid exchange conduit has reached deeper depth of ablation, has improve curative effect, it is to avoid the generation of complication.
In order to realize foregoing invention purpose, the invention provides techniques below scheme:
A kind of fluid exchange conduit, including 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 making electrode contact with lesion tissue, and intrusion pipe is arranged in conduit, and the infusion liquid that intrusion pipe flows out flows through lesion tissue surface by described opening；Described conduit also includes return pipe, and the infusion liquid flowing through lesion tissue surface is taken away by return pipe.
The above-mentioned technical characteristic of fluid exchange conduit makes electrode can touch lesion tissue, and electrode can be reduced and be ablated to lesion tissue surface temperature to lesion tissue surface sprinkling infusion liquid, having reached deeper depth of ablation, improve curative effect, it is to avoid the generation of complication.
Infusion liquid is poured in lesion tissue surface by intrusion pipe, although the electrode therapeutic effect to lesion tissue can be improved, but, infusion liquid enters blood in a large number, can increase the burden of kidney, increases the probability that complication produces.So, the infusion liquid on lesion tissue surface is extracted out by return pipe, can avoid the generation of above-mentioned situation, preferably guarantee 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 infusion liquid is taken on the water inlet end of described return pipe lesion tissue surface outside electrode away.
The infusion liquid of cooling lesion tissue is taken away by return pipe, far and away, return pipe water inlet end is arranged near lesion tissue, can preferably complete above-mentioned technical problem, so, return pipe being arranged 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, reduce the temperature on lesion tissue surface.
Described conduit also includes temperature sensor, temperature sensor be arranged in catheter tube and and contact electrode, temperature sensor is connected with temperature sensor lead.
Connect between described opening.
Owing to being provided with at least one opening on catheter tube, connect between opening, then return pipe can take infusion liquid away to each opening, it will the infusion liquid on the outer lesion tissue surface of each opening is taken away, alleviates the burden of kidney, prevent 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 the gap of ft connection or through hole.
Having gap or through hole between single electrode and catheter tube, this gap or through hole are conduit cavity and the extraneous gap connected or through hole, then infusion liquid can flow through lesion tissue surface from this gap or through hole.
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 at electrode, and the infusion liquid that water outlet port flows out flows through lesion tissue via described connected entrance and by described opening.
Catheter tube can make various geometric figure, such as: the various geometries such as linear, shaped form, annular, spiral type.
Compared with prior art, beneficial effects of the present invention:
While ensureing depth of ablation, the infusion liquid on lesion tissue surface is taken away, alleviates the burden of kidney, it is to avoid the generation of complication.
Accompanying drawing explanation
Fig. 1 is the cut-away view that the present invention adsorbs conduit embodiments.
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 is the end view that the present invention irrigates that an embodiment of perfusion absorption implemented by absorption conduit in end.
Fig. 9 and Figure 10 is the end view that the present invention irrigates that another embodiment of perfusion absorption implemented by absorption conduit in end.
Figure 11 is the sectional view of catheter interior structure.
Detailed description of the invention
Below in conjunction with test example and detailed description of the invention, the present invention is described in further detail.But this should not being interpreted as, the scope of the above-mentioned theme of the present invention is only limitted to below example, and all technology realized based on present invention belong to the scope of the present invention.
Embodiments of the invention, as it is shown in figure 1, a kind of fluid exchange conduit, including catheter tube 1, electrode 2, electrode cable 3, intrusion pipe 4 and return pipe 11.Catheter tube 1 is internal the traction fiber 12 controlling guiding-tube bend, 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 making electrode 2 contact with lesion tissue, and intrusion pipe 4 is arranged in catheter tube 1, and the infusion liquid that intrusion pipe 4 flows out flows through lesion tissue surface by described opening；The above-mentioned technical characteristic of fluid exchange conduit makes electrode 2 can touch lesion tissue surface, and can reduce electrode 2 to lesion tissue surface sprinkling infusion liquid and be ablated to lesion tissue surface temperature, it is to avoid produce thrombosis or incrustation.The conduit of the present embodiment also includes that the infusion liquid flowing through lesion tissue is taken away by return pipe 11, return pipe 11.
Infusion liquid is sprayed onto lesion tissue surface by intrusion pipe 4, although the electrode therapeutic effect to lesion tissue can be improved, but, infusion liquid enters blood in a large number, can increase the burden of kidney, increases the probability that complication produces.So, the infusion liquid on lesion tissue surface is extracted out by return pipe, can avoid the generation of above-mentioned situation, preferably guarantee 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 infusion liquid is taken on the water inlet end of described return pipe lesion tissue surface outside electrode away.
The infusion liquid of cooling lesion tissue is taken away by return pipe 11, far and away, return pipe 11 water inlet end is arranged near lesion tissue, can preferably complete above-mentioned technical problem, so, return pipe 11 being arranged on catheter tube to contact with lesion tissue be a good solution, the water inlet end of return pipe 11 directly contacts with lesion tissue, take infusion liquid away by water inlet end, reduce the temperature on lesion tissue surface.
Described conduit also includes temperature sensor, temperature sensor be arranged in catheter tube and with the position of contact electrode, temperature sensor is connected with temperature sensor lead.
Preferably, connect between described opening.
Owing to being provided with at least one opening on catheter tube, connect between opening, then return pipe 11 can take infusion liquid away to each opening, it will the infusion liquid on the outer lesion tissue surface of each opening is taken away, alleviates the burden of kidney, prevent the generation of complication.
Embodiment 2, as shown in figs. 2 and 11, described electrode 2 is wire-winding electrode, described catheter tube 1 has opening, described opening makes electrode 2 contact with outside, the connectivity part of described intrusion pipe and outside is the gap between wire-winding electrode, and infusion liquid can spray out from described gap, and the infusion liquid flowing through lesion tissue is taken away by return pipe 11 via opening.
Embodiment 3, as shown in Figure 3, described electrode 2 is annular electrode, described catheter tube 1 has opening 7, described opening 7 makes electrode 2 contact with outside, described connectivity part is the gap between electrode and conduit outer wall or through hole, and infusion liquid can spray out from described gap or through hole, and the infusion liquid flowing through lesion tissue is taken away by return pipe 11 at gap or the through hole via the other end.
In the present embodiment, described conduit also includes that adsorption sleeve, adsorption sleeve suit are arranged on body 2 and have another opening 8 matched with opening 7.
Embodiment 4, as shown in Figure 4, described electrode 2 is printed circuit electrode, and described catheter tube 1 has opening, and described opening makes electrode 2 contact with outside, infusion liquid can have ejection at opening 7, return pipe is had to extract out via the gap between electrode again, or as it is shown in figure 5, described connectivity part is the through hole 9 on printed circuit, infusion liquid can spray out from described through hole 9, and the infusion liquid flowing through lesion tissue is taken away by return pipe 11 through opening.In the present embodiment, described conduit can also include adsorption sleeve, and adsorption sleeve suit is arranged on body has another opening 8 matched with opening.
Embodiment 5, as shown in Figure 6, described electrode 2 is annular electrode, described catheter tube 1 has opening, and described opening makes electrode contact with outside, and described connected entrance is groove 10, infusion liquid can spray out from described groove 10, and the infusion liquid flowing through lesion tissue is taken away by return pipe.
Described electrode is single electrode, and described connectivity part is gap or through hole, and described gap or through hole are conduit cavity and the gap of ft connection or through hole.
Unipolar gap or through hole, this gap or through hole are conduit cavity and the extraneous gap connected or through hole, then infusion liquid can be sprayed onto lesion tissue surface from this gap or through hole.
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 at electrode, and the infusion liquid that water outlet port sprays flows through lesion tissue surface via described connected entrance and by described opening and another opening.
Catheter tube can make various geometric figure, 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, including conduit, end of conduit is provided with electrode tip and opening, and opening is outside electrode tip is exposed to, the connectivity part on intrusion pipe connection electrode tip, this connectivity part can be the gap between through hole, electrode retaining collar, helix gap on electrode, groove on electrode etc., as shown in figures 8 to 15 but be not limited to the concrete form of shown situation.Infusion liquid is sprayed by connectivity part, body open extracted out by water pipe.
Embodiments of the invention, as shown in Figure 9 and Figure 10, including conduit, end of conduit is provided with electrode tip and opening, and opening is outside electrode tip is exposed to, the water inlet port on return pipe connection electrode tip, this water inlet port can be the gap between through hole, electrode retaining collar, helix gap on electrode, groove on electrode etc., as shown in figures 8 to 15 but be not limited to the concrete form of shown situation.Intrusion pipe is positioned at body, and infusion liquid is sprayed by opening part, is extracting out by return pipe through water inlet port.
One embodiment of the present of invention distal end of catheter can be spiral helicine, may be used for orifices of pulmonary veins and melt use, wire-winding electrode being distributed above the catheter tube 1 of far-end, the gap on wire-winding electrode connects with its internal intrusion pipe, return pipe, it is achieved spray and adsorb the function of infusion liquid.
All features disclosed in this specification, in addition to mutually exclusive feature and/or step, all can combine by any way.
Any feature disclosed in this specification (including any accessory claim, summary and accompanying drawing), unless specifically stated otherwise, all can be by other equivalences or there is the alternative features of similar purpose replaced.I.e., unless specifically stated otherwise, an example during each feature is a series of equivalence or similar characteristics.
The invention is not limited in aforesaid detailed description of the invention.The present invention expands to any new feature disclosed in this manual or any new combination, and the arbitrary new method that discloses or the step of process or any new combination.
Claims (7)
1. a fluid exchange conduit, including 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 connection intrusion pipe and the opening of lesion tissue, intrusion pipe is arranged in conduit, and the infusion liquid that intrusion pipe flows out flows through lesion tissue surface by described opening；
It is characterized in that, described conduit also includes return pipe, and the liquid flowing through lesion tissue is taken away by return pipe, 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 takes infusion liquid away from lesion tissue surface.
2. conduit as claimed in claim 1, it is characterised in that described conduit also includes temperature sensor, temperature sensor be arranged on catheter tube inner chamber and with the position contacted inside electrode, temperature sensor is connected with temperature sensor lead.
3. conduit as claimed in claim 1, it is characterised in that described opening is several, and connects between opening.
4. conduit as claimed in claim 1, it is characterised in that described electrode is single electrode, and described opening is the gap on electrode or through hole.
5. conduit as claimed in claim 1, it is characterised in that described electrode is flexible circuit electrode, and described opening is groove or through hole.
6. conduit as claimed in claim 1, it is characterised in that described opening is arranged at electrode.
Conduit the most according to claim 1, it is characterised in that: the geometric figure of catheter tube be following in the combination of one or more: 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 CN103893902A (en) | 2014-07-02 |
| CN103893902B true CN103893902B (en) | 2016-12-28 |
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| 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 (7)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7077842B1 (en) * | 2001-08-03 | 2006-07-18 | Cosman Jr Eric R | Over-the-wire high frequency electrode |
-
2012
- 2012-12-27 CN CN201210577431.5A patent/CN103893902B/en active Active
Patent Citations (7)
| 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 |
| 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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| CN103893902A (en) | 2014-07-02 |
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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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