CN103892902B - Perfusion absorption conduit - Google Patents
Perfusion absorption conduit Download PDFInfo
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- CN103892902B CN103892902B CN201210577239.6A CN201210577239A CN103892902B CN 103892902 B CN103892902 B CN 103892902B CN 201210577239 A CN201210577239 A CN 201210577239A CN 103892902 B CN103892902 B CN 103892902B
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Abstract
The invention discloses a kind of perfusion absorption conduit.A kind of perfusion absorption conduit of the present invention, including catheter tube, electrode, electrode cable, intrusion pipe and return pipe, electrode is arranged on catheter tube, electrode is connected with electrode cable, catheter tube has the position of electrode and is provided with the water outlet port of the intrusion pipe making electrode contact with lesion tissue, intrusion pipe is arranged in catheter tube, and the water side of intrusion pipe is sprayed infusion liquid and flowed through lesion tissue surface by the water outlet port of described intrusion pipe；Described conduit also includes fluid return pipe, and return pipe has infusion liquid suction port (return pipe water inlet port), and return pipe port inside suction fluid makes the water outlet port of intrusion pipe form negative pressure.The negative pressure that the water outlet port of intrusion pipe is formed makes the electrode area of conduit closely adsorb at tissue site so that the effect that reclines is more preferable, thus improves therapeutic effect.
Description
Technical field
The present invention relates to a kind of electrophysiologicalcatheter catheter, particularly to one perfusion absorption conduit.
Background technology
Electrophysiologicalcatheter catheter body is generally made up of pliable and tough biocompatible materials, such as plastics, including polyethylene, polyester or polyamide.Electrophysiologicalcatheter catheter generally reaches the treatment function to lesion tissue by the heat effect of electrode, owing to the physiological structure of human body is complicated, need the electrode being arranged on catheter tube can touch the lesion tissue position needing treatment exactly, and closely can fit with lesion tissue position so as to utilize the heat effect of electrode to treat fully.
In the prior art, although the electrode being arranged on catheter tube can arrive the lesion tissue position needing treatment, but, owing to being difficult to the problem that reclines solving lesion tissue position with electrode, cause ablation the most thorough；The perfusion normal saline that conventional perfusion conduit is too much, increases the weight of kidney burden.
Summary of the invention
It is an object of the invention to overcome the deficiency in the presence of prior art, it is provided that a kind of perfusion absorption conduit.Recline untight technical problem for the electrode on catheter tube in prior art and lesion tissue, it is provided that a kind of technical scheme so that catheter tube electrode is closely fitted with lesion tissue, and beneficially electrode utilizes heat effect to treat lesion tissue.
In order to realize foregoing invention purpose, the invention provides techniques below scheme:
A kind of perfusion absorption conduit, including catheter tube, electrode, electrode cable, intrusion pipe, electrode is arranged on catheter tube, electrode is connected with electrode cable, there is on body the connectivity part making catheter interior with ft connection, infusion liquid flows through electrode and lesion tissue surface through intrusion pipe and connectivity part, it is characterized in that, described perfusion absorption conduit also includes return pipe, the water inlet port of described return pipe and body ft connection, infusion liquid is extracted out through water inlet port, and return pipe withdrawn fluid speed inputs fluid velocity more than intrusion pipe.The infusion liquid that intrusion pipe sprays flows through electrode and lesion tissue surface by the water outlet port of described intrusion pipe, and taken away by return pipe water inlet port, reduce electrode and the temperature on lesion tissue surface, enhance the effect of ablation, the burden of kidney is alleviated again owing to having taken perfusion liquid away, and owing to withdrawn fluid speed can also make conduit adsorb organizationally more than intrusion pipe input fluid velocity, preferably melt.
Preferably, described conduit also includes that adsorption sleeve, adsorption sleeve suit are arranged on body, and intrusion pipe is positioned at catheter interior, and the water inlet port of return pipe is positioned at inside adsorption sleeve, and return pipe withdrawn fluid speed inputs fluid velocity more than intrusion pipe.The infusion liquid that intrusion pipe sprays flows through electrode and lesion tissue by the water outlet port of described intrusion pipe；Return pipe water inlet port is for taking the fluid between electrode and lesion tissue away, take speed away more than intrusion pipe spray rate, and relative to forming negative pressure between body electrode and lesion tissue, making catheter electrode be adsorbed onto tissue surface, the effect that reclines is more preferable, and fluid reduces the temperature of electrode and tissue surface, make depth of ablation deeper, electric isolution is more thorough, has reached more preferable therapeutic effect, simultaneously because taken perfusion liquid away to alleviate again the burden of kidney.
Electrode has so that connectivity part with ft connection in body, and these parts can be the groove offered on electrode, it is also possible to is the hole arranged on electrode, it is also possible to be the gap between single electrode and body, in described connectivity part enables to body and ft connection.
Specifically, above-mentioned mode of communicating is fluid communication.
Above-mentioned intrusion pipe can be arranged in catheter tube, the infusion liquid that intrusion pipe sprays flows through electrode and lesion tissue surface by the water outlet port of described intrusion pipe, intrusion pipe is for carrying infusion liquid, and the effect of infusion liquid is the temperature reducing tissue surface when electrode ablation.
After above-mentioned catheter tube extend into lesion tissue, play the electrode being provided on catheter tube of ablation effect, and generally under situation, lesion tissue is poor with the adhibition of electrode, if electrode produces heat effect, then the lesion tissue to electrode contact can not reach the effect of ablation or melt the most thorough.Adsorption sleeve in the preferred embodiment of the present invention can effectively solve this problem, return pipe in conduit of the present invention takes fluid away from electrode and tissue surface, taking fluid away can cause the pressure in body less than the pressure outside body, owing to creating pressure differential, then electrode is adsorbed organizationally, so, when electrode produces heat effect, lesion tissue just can be ablated to well, improves therapeutic effect.
Preferably, adsorption sleeve suit is arranged on body and has the return pipe water inlet port that the water outlet port with intrusion pipe matches.Owing to fluid extraction speed produces pressure differential higher than input speed, adsorption sleeve is as a sucker suction organizationally so that electrode can well recline with tissue；Meanwhile, adsorption sleeve prevents the blood beyond adsorbed lesion tissue to be inhaled into catheter tube.
Preferably, 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.
Can connect between the water outlet port of described intrusion pipe with return pipe water inlet port.
Owing to the water outlet port of at least one intrusion pipe may be provided with on catheter tube, connect between the water outlet port of intrusion pipe with return pipe water inlet port, then return pipe can take fluid away to each opening, it will makes to form pressure differential inside and outside each opening so that electrode adsorption is to tissue.
Preferably, described electrode is wire-winding electrode, and described catheter tube has the water outlet port of intrusion pipe, and the water outlet port of described intrusion pipe makes electrode contact with tissue, and described connectivity part is the gap between wire-winding electrode;Or intrusion pipe connects with wire-winding electrode inside, conduit is the through hole on wire-winding electrode with outside connectivity part.
Preferably, described electrode is single electrode, and described connectivity part is the gap between single electrode and catheter tube or through hole, and described gap or through hole are the interior gap connected with lesion tissue of conduit or through hole.
Gap or through hole is had between single electrode and catheter tube, this gap or through hole are the interior gap connected with lesion tissue of conduit or through hole, then infusion liquid can flow through electrode and lesion tissue surface from this gap or through hole, and return pipe also can be from this gap or through hole suction fluid so that form pressure differential between lesion tissue and outside.
Described electrode is flexible circuit electrode, and described connectivity part is through hole or groove, described through hole or groove connecting tube inner chamber.
The water outlet port of described intrusion pipe is arranged near electrode, and the infusion liquid that water outlet port sprays flows through electrode and lesion tissue surface via described connectivity part and by the water outlet port of described intrusion pipe, and takes away from return pipe water inlet port.Both the effect of perfusion therapy had been reached, simultaneously because taken perfusion liquid away to alleviate again the burden of kidney.
Described return pipe is drinking-water pipe, described return pipe be arranged on catheter tube can with the electrode of contact tissue near, the water inlet port of described return pipe inwardly draws water from electrode and lesion tissue surface.
Described catheter tube can make various geometric figure, such as: the various geometries such as linear, shaped form, annular, spiral type.
Compared with prior art, the beneficial effect of invention and preferred embodiments thereof:
1, the infusion liquid that the water outlet port of intrusion pipe sprays flows through electrode and lesion tissue surface via described connectivity part and by the water outlet port of described intrusion pipe, reduce electrode and the temperature on lesion tissue surface, enhance the effect of ablation, return pipe is taken the fluid between electrode and lesion tissue away and is alleviated kidney burden, and make electrode adsorption in tissue surface, strengthen ablation effect.
2, in the embodiment using adsorption sleeve, return pipe takes the fluid between electrode and lesion tissue away, take speed away more than intrusion pipe spray rate, and relative to forming negative pressure between body electrode and lesion tissue, make conduit and electrode adsorption to tissue surface, prevent the blood beyond adsorbed lesion tissue to be inhaled into catheter tube, enhance the effect of ablation, simultaneously because taken perfusion liquid away to alleviate kidney burden.
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 is the structure chart of another embodiment of the present invention.
Fig. 8 and Fig. 9 is the end view that the present invention irrigates that an embodiment of perfusion absorption implemented by absorption conduit in end.
Figure 10 and Figure 11 is the end view that the present invention irrigates that another embodiment of perfusion absorption implemented by absorption conduit in end.
Figure 12 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.
The specific embodiment of the present invention, as shown in figs. 1 and 12, a kind of perfusion absorption conduit, including catheter tube 1, electrode 2, electrode cable 3, intrusion pipe 11 and return pipe 4.Catheter tube 1 is internal the traction fiber 12 controlling guiding-tube bend, for keeping the braided steel wire 13 of catheter shape, return pipe 4 is between adsorption sleeve and body 1, and electrode 2 is arranged on catheter tube 1, electrode 2 contacts with lesion tissue, and electrode cable 3 is connected with electrode 2.There is the water outlet port of intrusion pipe 11 catheter tube 1 position neighbouring with lesion tissue, and intrusion pipe 11 is arranged in catheter tube, and the infusion liquid that intrusion pipe 11 sprays flows through electrode and lesion tissue surface by the water outlet port of described intrusion pipe 11；
After catheter tube extend into lesion tissue, the electrode being arranged on catheter tube contacts with lesion tissue surface, electrode cable is connected with electrode, due on body, the position being provided with electrode is provided with the water outlet port of intrusion pipe 11, and in the water outlet port position of intrusion pipe 11, electrode contacts with lesion tissue, therefore, electrode generation heat effect can melt lesion tissue；Electrode has so that connectivity part with ft connection in body, and this connectivity part can be the groove offered on electrode, it is also possible to be the through hole arranged on electrode, it is also possible to be the gap between single electrode and body, in described parts enable to body and ft connection.Simultaneously, intrusion pipe 11 is arranged in catheter tube, the infusion liquid that intrusion pipe 11 sprays flows through electrode and lesion tissue surface by the water outlet port of described intrusion pipe 11, connectivity part, intrusion pipe 11 is for carrying infusion liquid, and the effect of infusion liquid is to reduce electrode and the temperature on lesion tissue surface when electrode ablation.
As it is shown in figure 1, described conduit also includes return pipe 4, lesion tissue surface takes fluid away due to return pipe 4, and withdrawn fluid speed inputs fluid velocity more than intrusion pipe, causes tube cavity to form negative pressure.
After catheter tube 1 extend into lesion tissue, play the electrode being provided on catheter tube 1 of ablation effect, and generally under situation, lesion tissue is poor with the adhibition of electrode, if electrode produces heat effect, then the lesion tissue to electrode contact can not reach the effect of ablation or melt the most thorough.
The conduit of the present invention includes return pipe 4, return pipe 4 takes fluid away from electrode and tissue surface, taking fluid away can cause the pressure in body less than the pressure outside body, owing to creating pressure differential, then electrode is adsorbed organizationally, so, when electrode produces heat effect, lesion tissue just can be ablated to well, improves therapeutic effect.
One preferred version of the present invention, described conduit also includes adsorption sleeve, and adsorption sleeve suit is arranged on body 1 and has the return pipe 4 that the water outlet port with intrusion pipe 11 matches and intakes port.Conduit includes that adsorption sleeve, adsorption sleeve are sleeved on body 1 and have the return pipe 4 that the water outlet port with intrusion pipe 11 matches and intake port, and owing to producing pressure differential, adsorption sleeve is as a sucker suction organizationally so that electrode can well recline with organizing；Meanwhile, adsorption sleeve prevents the blood beyond adsorbed lesion tissue to be inhaled into catheter tube 1.
Preferably, described conduit also includes that temperature sensor 5, temperature sensor 5 are arranged on the position that catheter tube 1 is interior and contacts with electrode 2, and temperature sensor 5 is connected with temperature sensor lead 6.
Connect between water outlet port and the water inlet port of return pipe 4 of described intrusion pipe 11.
Owing to the water outlet port of at least one intrusion pipe 11 may be provided with on catheter tube 1, connect between the water outlet port of intrusion pipe 11, then return pipe 4 can take fluid away to each opening, it will make to form pressure differential inside and outside each opening so that electrode 2 is adsorbed onto tissue.
Embodiment 2, as shown in Fig. 2 and Figure 12, described electrode 2 is wire-winding electrode, having the water outlet port of intrusion pipe 11 between described catheter tube 1 and adsorption sleeve, the water outlet port of described intrusion pipe 11 makes electrode 2 contact with tissue, and described connectivity part is the gap between wire-winding electrode, infusion liquid can spray out from described gap, the return pipe 4 being positioned at body 1 can also take fluid away from described gap so that form negative pressure between catheter tube 1 inside and outside, catheter electrode 2 is adsorbed onto tissue.This embodiment is similar to embodiment 1 structure, and simply infusion liquid input and outgoing position are contrary.
Embodiment 3, as shown in Figure 3, described electrode 2 is wire-winding electrode, between described catheter tube 1 and its outside adsorption sleeve, there is the water outlet port of intrusion pipe 11 and the water inlet port of return pipe 4, infusion liquid is sprayed at the position that electrode 2 contacts with tissue by the water outlet port of described intrusion pipe 11, described connectivity part is the gap between wire-winding electrode and conduit outer wall, infusion liquid can spray out from described gap, return pipe 4 can also take fluid away from described gap so that forms negative pressure between catheter tube 1 inside and outside.
Embodiment 4, as shown in Figure 4, described electrode 2 is printed circuit electrode, described catheter tube 1 has the water outlet port 7 of intrusion pipe 11, the water outlet port 7 of described intrusion pipe 11 makes electrode 2 contact with tissue, and described connectivity part is the gap on printed circuit between electrode, and infusion liquid can spray out from described water outlet port 7, return pipe 4 inwardly takes fluid away from described gap so that form negative pressure between catheter tube inside and outside.
In the present embodiment, described conduit can also include adsorption sleeve, as it is shown in figure 5, adsorption sleeve suit is arranged on body outer surface and has the return pipe water inlet port 8 that the water outlet port with intrusion pipe matches.Its electrode part can also arrange through hole 9 as shown in Figure 6 on electrode, extracts infusion liquid out for return pipe 4.
Embodiment 5, as shown in Figure 7, described electrode 2 is annular electrode, described catheter tube 1 has the water outlet port of intrusion pipe, the water outlet port of described intrusion pipe makes electrode contact with outside, and described connectivity part is groove 10, and infusion liquid can infiltrate from described groove 10, return pipe 4 can also inwardly take fluid away from described groove 10 so that forms negative pressure between catheter tube inside and outside.
Described return pipe is drinking-water pipe, described return pipe be arranged on catheter tube can with the electrode of contact tissue near, the water inlet port of described return pipe inwardly draws water from electrode and lesion tissue surface.
Described 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 8 and Figure 9, including conduit, adsorption sleeve outside body, end of conduit is provided with electrode tip, 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 the figure but be not limited to the concrete form of shown situation.Infusion liquid is sprayed by connectivity part, the return pipe formed between body and adsorption sleeve extracting out, forming negative pressure, end of conduit adsorbed at sufferer tissue.
Embodiments of the invention, as shown in Figure 10 and Figure 11, including conduit, adsorption sleeve outside body, end of conduit is provided with electrode tip, 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 the figure but be not limited to the concrete form of shown situation.Intrusion pipe is between body and adsorption sleeve, and infusion liquid is sprayed by opening part, is being extracted out by return pipe through water inlet port, is forming negative pressure, end of conduit adsorbed at sufferer tissue.
One embodiment of the present of invention, distal end of catheter is spiral helicine, may be used for orifices of pulmonary veins and melt use, wire-winding electrode is distributed above the catheter tube 1 of far-end, the gap of wire-winding electrode connects with its internal intrusion pipe, return pipe, realize spraying and the function of absorption infusion liquid, and form negative pressure by this partial adsorbates organizationally.
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.
Claims (10)
1. a perfusion absorption conduit, including catheter tube, electrode, electrode cable, intrusion pipe, electrode is arranged on catheter tube, electrode is connected with electrode cable, there is on body the connectivity part making catheter interior with ft connection, infusion liquid flows through electrode and lesion tissue surface through intrusion pipe and connectivity part, it is characterized in that, described perfusion absorption conduit also includes return pipe, the water inlet port of described return pipe and body ft connection, infusion liquid is extracted out through water inlet port, and return pipe withdrawn fluid speed inputs fluid velocity more than intrusion pipe.
2. conduit as claimed in claim 1, it is characterised in that described conduit also includes that adsorption sleeve, adsorption sleeve suit are arranged on body, and intrusion pipe is positioned at catheter interior, and the water inlet port of return pipe is positioned at inside adsorption sleeve.
3. conduit as claimed in claim 1, it is characterised in that described conduit also includes that adsorption sleeve, adsorption sleeve suit are arranged on body, and return pipe is positioned at catheter interior, intrusion pipe and connectivity part thereof and is positioned at inside adsorption sleeve.
4. conduit as claimed in claim 2, it is characterised in that return pipe is between adsorption sleeve and body.
5. the conduit as described in claim 1 or 2 or 3, it is characterised in that described conduit also includes temperature sensor, and temperature sensor is arranged on catheter tube inner chamber and the position with contact electrode, and temperature sensor is connected with temperature sensor lead.
6. conduit as claimed in claim 5, it is characterised in that described electrode is single electrode, and described connectivity part is the gap on single electrode or through hole.
7. conduit as claimed in claim 5, it is characterised in that described electrode is wire-winding electrode, and described connectivity part is the gap between the helix of wire-winding electrode or the through hole on electrode.
8. conduit as claimed in claim 5, it is characterised in that described electrode is flexible circuit electrode.
9. conduit as claimed in claim 1, it is characterised in that the water outlet port of described intrusion pipe and connectivity part are arranged near electrode.
Conduit the most according to claim 1, it is characterised in that: the geometry of catheter tube is the one or more combination in following shape: linear, shaped form, annular, spiral type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210577239.6A CN103892902B (en) | 2012-12-27 | 2012-12-27 | Perfusion absorption conduit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210577239.6A CN103892902B (en) | 2012-12-27 | 2012-12-27 | Perfusion absorption conduit |
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| Publication Number | Publication Date |
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| CN103892902A CN103892902A (en) | 2014-07-02 |
| CN103892902B true CN103892902B (en) | 2016-10-26 |
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| CN201210577239.6A Active CN103892902B (en) | 2012-12-27 | 2012-12-27 | Perfusion absorption conduit |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109419551A (en) * | 2017-09-04 | 2019-03-05 | 四川锦江电子科技有限公司 | A kind of device for casting for RF ablation |
| CN110811821A (en) * | 2018-08-14 | 2020-02-21 | 复旦大学附属中山医院 | Ablation catheter |
Citations (3)
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|---|---|---|---|---|
| WO2005089663A1 (en) * | 2004-03-05 | 2005-09-29 | Medelec-Minimeca S.A. | Saline-enhanced catheter for radiofrequency tumor ablation |
| CN101077317A (en) * | 2006-05-26 | 2007-11-28 | 张星星 | Medical apparatus for resecting hysteromyoma |
| CN201591623U (en) * | 2010-01-19 | 2010-09-29 | 陈爱华 | Radio frequency ablation catheter for curing atrial fibrillation |
Family Cites Families (5)
| 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 |
| US6994706B2 (en) * | 2001-08-13 | 2006-02-07 | Minnesota Medical Physics, Llc | Apparatus and method for treatment of benign prostatic hyperplasia |
| US9833217B2 (en) * | 2008-12-31 | 2017-12-05 | St. Jude Medical, Atrial Fibrillation Division, Inc. | Methods and apparatus for utilizing impeller-based rotationally-scanning catheters |
| US20110257641A1 (en) * | 2010-04-14 | 2011-10-20 | Roger Hastings | Phototherapy for renal denervation |
| US8715280B2 (en) * | 2010-08-04 | 2014-05-06 | St. Jude Medical, Atrial Fibrillation Division, Inc. | Magnetically guided catheters |
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2012
- 2012-12-27 CN CN201210577239.6A patent/CN103892902B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005089663A1 (en) * | 2004-03-05 | 2005-09-29 | Medelec-Minimeca S.A. | Saline-enhanced catheter for radiofrequency tumor ablation |
| CN101077317A (en) * | 2006-05-26 | 2007-11-28 | 张星星 | Medical apparatus for resecting hysteromyoma |
| CN201591623U (en) * | 2010-01-19 | 2010-09-29 | 陈爱华 | Radio frequency ablation catheter for curing atrial fibrillation |
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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. |