CN103892903B - A kind of perfusion cannula - Google Patents
A kind of perfusion cannula Download PDFInfo
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- CN103892903B CN103892903B CN201210577267.8A CN201210577267A CN103892903B CN 103892903 B CN103892903 B CN 103892903B CN 201210577267 A CN201210577267 A CN 201210577267A CN 103892903 B CN103892903 B CN 103892903B
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- electrode
- clad
- intrusion pipe
- catheter tube
- perfusion cannula
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Abstract
The invention discloses a kind of perfusion cannula, comprise catheter tube, electrode, electrode cable, intrusion pipe, electrode is arranged on catheter tube, electrode is connected with electrode cable, it is characterized in that, is provided with clad outward at body, this clad is provided with and exposes the opening that electrode is used, in this clad, be provided with intrusion pipe, be provided with the delivery port of intrusion pipe in the clad inner side of electrode position, be provided with the groove around catheter tube at electrode surface. Intrusion pipe of the present invention can be avoided under oppression state, and the perfusion liquid of local location is stopped up the problem that cannot spray completely, can better reduce tissue and electrode surface temperature, reaches better result for the treatment of.
Description
Technical field
The present invention relates to a kind of electrophysiologicalcatheter catheter, particularly a kind of perfusion cannula.
Background technology
Electrophysiologicalcatheter catheter body is made up of pliable and tough biocompatible materials conventionally, and for example plastics comprise polyethylene, polyester or polyamide. Electrophysiologicalcatheter catheter reaches the treatment function to lesion tissue by the fuel factor of electrode conventionally, due to the physiological structure complexity of human body, the electrode that need to be arranged on catheter tube can touch the lesion tissue position that needs treatment exactly, and can closely fit with lesion tissue position to can utilize fully the fuel factor of electrode to treat.
In the prior art, the reperfusion mode that conventional perfusion cannula adopts is difficult for realizing evenly perfusion, in the time that part surface is oppressed, is difficult to cold brine perfusion to oppressed position.
Therefore, need to provide a kind of and make to produce more greatly at lesion tissue position, darker tissue damage, reach better therapeutic purposes method.
Summary of the invention
The object of the invention is to overcome existing deficiency in prior art, a kind of perfusion cannula is provided, can effectively pour into, and structure is simpler than the scheme of prior art, cost is low.
In order to realize foregoing invention object, the invention provides following technical scheme:
A kind of perfusion cannula, comprise catheter tube, electrode, electrode cable, intrusion pipe, electrode is arranged on catheter tube, electrode is connected with electrode cable, it is characterized in that, is provided with clad outward at body, this clad is provided with and exposes the opening that electrode is used, in this clad, be provided with intrusion pipe, be provided with the delivery port of intrusion pipe in the clad inner side of electrode position, be provided with the groove around catheter tube at electrode surface.
Preferably, described electrode is ring electrode, and described groove is the groove on ring electrode surface.
Preferably, described electrode is wire-winding electrode, and described groove is the gap forming between adjacent electrode wires.
Preferably, the position of described delivery port is corresponding with groove.
Preferably, between described electrode and catheter tube, be also provided with temperature sensor.
Preferably, described intrusion pipe is arranged in clad, and the diameter of described intrusion pipe is less than the thickness of clad.
Preferably, 1 or many of described intrusion pipe, 1 intrusion pipe and multiple electrode pair are answered, or intrusion pipe quantity is corresponding with number of poles, and intrusion pipe distributes along hoop in clad.
The perfusion liquid that above-mentioned intrusion pipe sprays between clad and electrode along groove or Clearance Flow, can flow to uniformly by the surface of ablation tissue, when electrode and tissue surface are under impaction state, different by the mode of spraying perfusion liquid in hole from existing employing, perfusion cannula of the present invention can't stop up the outlet of perfusion liquid, perfusion liquid can be left to the oppressed periphery of organizing through groove, continues to reduce tissue temperature. And perfusion cannula of the present invention can utilize existing conduit and electrode structure, without being divided, electrode part carries out Precision Machining, only need be at outside clad and the intrusion pipe of increasing of existing conduit, wherein clad and intrusion pipe can once-formings.
Described catheter tube can be made various geometric figures, such as: the various geometries such as linear, shaped form, annular, spirality.
Compared with prior art, the beneficial effect of invention and preferred embodiments thereof:
1, the perfusion liquid that the delivery port of intrusion pipe flows out, via described groove or gap flow through electrode and lesion tissue surface, has reduced the temperature on electrode and lesion tissue surface, avoids under oppression state, and the perfusion liquid of local location is stopped up the problem that cannot spray completely.
2, can on existing conduit, improve easily, little on the generating process impact of conduit, improved cost is low.
Advance of the present invention is also: by spraying perfusion liquid to tissue surface, maintain on the one hand lower organizational interface's temperature, anti-tampon or incrustation; Increase on the other hand heat-conduction effect, make to produce more greatly at lesion tissue position, darker tissue damage, reach better therapeutic purposes.
Brief description of the drawings
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 1.
Fig. 3 is the structure chart of the embodiment of the present invention 2.
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 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.
Specific embodiments of the invention, as illustrated in fig. 1 and 2, a kind of perfusion cannula, comprises catheter tube 8, electrode 2(wire-winding electrode), electrode cable 7, temperature sensor 3, intrusion pipe 5 and clad 1. There is the traction fiber 6 of controlling guiding-tube bend catheter tube 8 inside, for keeping the braided steel wire 4 of catheter shape. Wherein, electrode 2 is arranged on catheter tube 8, clad 1 jacketed electrode 2 and body 8, and there is opening 10, and in opening 10, exposing partial electrode 2 and contact with lesion tissue, electrode cable 7 is connected with electrode 2. Clad 1 inner side has the delivery port of intrusion pipe 5, delivery port position and electrode 2(wire-winding electrode) on the adjacent electrode wires of spiral winding between gap corresponding, make perfusion liquid can flow to along this gap lesion tissue surface. Temperature sensor 3 is between electrode 2 inner sides and catheter tube 8, and with respect to the temperature sensor generally arranging in adjacent position, the temperature sensor 3 of the present embodiment is the temperature at measurement electrode 2 places accurately. The spacing in gap, taking 0.01 to 4mm as good, so both can ensure that perfusion liquid, along Clearance Flow, can ensure again the power that wire-winding electrode melts in the present embodiment, strengthened ablation effect.
Embodiments of the invention 2, a kind of perfusion cannula, as shown in Figure 3, comprises catheter tube 8, ring electrode 9, electrode cable 7, temperature sensor 3, intrusion pipe 5 and clad 1. There is the traction fiber 6 of controlling guiding-tube bend catheter tube 8 inside, for keeping the braided steel wire 4 of catheter shape. Wherein, electrode 2 is arranged on catheter tube 8, the coated ring electrode 9 of clad 1 and body 8, and there is opening 10, and in opening 10, exposing part ring electrode 9 and contact with lesion tissue, electrode cable 7 is connected with ring electrode 9. Clad 1 inner side has the delivery port of intrusion pipe 5, and delivery port position is corresponding with the annular groove on ring electrode 9, makes perfusion liquid to flow to lesion tissue surface along this groove. In the present embodiment, the spacing of groove is preferably 0.01 to 4mm, so both can ensure that perfusion liquid is along Clearance Flow, can ensure again the power that wire-winding electrode melts, and strengthens ablation effect.
In the above-described embodiments, the diameter of intrusion pipe 5 can preferably be less than the thickness of clad 1, and described intrusion pipe is arranged in clad, can make like this outside of whole conduit level and smooth, is convenient to reduce the resistance when inserting and taking out.
In the above-described embodiments, preferably, described intrusion pipe quantity is corresponding with number of poles, and intrusion pipe is equally spaced along hoop in clad, be convenient to carry respectively perfusion liquid for each ablating electrode, can effectively control the intensity of spray irrigation of each ablation locations place perfusion liquid.
The catheter tube of above-described embodiment can be made various geometric figures, such as: the various geometries such as linear, shaped form, annular, spirality.
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.
Claims (9)
1. a perfusion cannula, comprise catheter tube, electrode, electrode cable, intrusion pipe, electrode is arranged on catheter tube, electrode is connected with electrode cable, it is characterized in that, is provided with clad outward at body, this clad is provided with and exposes the opening that electrode is used, in this clad, be provided with intrusion pipe, be provided with the delivery port of intrusion pipe in the clad inner side of electrode position, be provided with the groove around catheter tube at electrode surface.
2. perfusion cannula as claimed in claim 1, is characterized in that, described electrode is ring electrode, and described groove is the groove on ring electrode surface.
3. perfusion cannula as claimed in claim 1, is characterized in that, described electrode is wire-winding electrode, and described groove is the gap forming between adjacent electrode wires.
4. perfusion cannula as claimed in claim 2 or claim 3, is characterized in that, the position of described delivery port is corresponding with groove or gap.
5. perfusion cannula as claimed in claim 4, is characterized in that, is also provided with temperature sensor between described electrode and catheter tube.
6. perfusion cannula as claimed in claim 2 or claim 3, is characterized in that, described intrusion pipe is 1 or many, and 1 intrusion pipe and multiple electrode pair should.
7. perfusion cannula as claimed in claim 2 or claim 3, is characterized in that, described intrusion pipe quantity is corresponding with number of poles, and intrusion pipe distributes along hoop in clad.
8. conduit according to claim 6, is characterized in that: the geometry of catheter tube is the one or more combination in following shape: linear, shaped form.
9. conduit according to claim 8, is characterized in that: described shaped form comprises annular and spirality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210577267.8A CN103892903B (en) | 2012-12-27 | 2012-12-27 | A kind of perfusion cannula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210577267.8A CN103892903B (en) | 2012-12-27 | 2012-12-27 | A kind of perfusion cannula |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103892903A CN103892903A (en) | 2014-07-02 |
| CN103892903B true CN103892903B (en) | 2016-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210577267.8A Active CN103892903B (en) | 2012-12-27 | 2012-12-27 | A kind of perfusion cannula |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107550559B (en) * | 2016-07-01 | 2021-10-22 | 先健科技(深圳)有限公司 | Ablation catheter |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7819866B2 (en) * | 2003-01-21 | 2010-10-26 | St. Jude Medical, Atrial Fibrillation Division, Inc. | Ablation catheter and electrode |
| JP5853426B2 (en) * | 2011-06-08 | 2016-02-09 | 東レ株式会社 | Ablation catheter with balloon |
| CN202446256U (en) * | 2011-12-14 | 2012-09-26 | 四川锦江电子科技有限公司 | Electrophysiological electrode capable of spraying liquid and electrophysiological catheter |
| CN102688093B (en) * | 2012-06-20 | 2014-08-27 | 深圳市惠泰医疗器械有限公司 | Renal artery cold saline water radio frequency ablation controllable electrode catheter |
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| Publication number | Publication date |
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| CN103892903A (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. |