CN203029378U - Balloon electrode renal artery radiofrequency ablation catheter - Google Patents
Balloon electrode renal artery radiofrequency ablation catheter Download PDFInfo
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- CN203029378U CN203029378U CN 201220690829 CN201220690829U CN203029378U CN 203029378 U CN203029378 U CN 203029378U CN 201220690829 CN201220690829 CN 201220690829 CN 201220690829 U CN201220690829 U CN 201220690829U CN 203029378 U CN203029378 U CN 203029378U
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- renal artery
- conduit
- electrode
- utricule
- ablation
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Abstract
The utility model provides a balloon electrode renal artery radiofrequency ablation catheter which comprises a catheter body, multiple electrodes and a balloon body, wherein the balloon body is communicated with one end portion of the catheter body, and the multiple electrodes are arranged on the inner wall of the balloon body. According to the balloon electrode renal artery radiofrequency ablation catheter, after the balloon body is delivered into a blood vessel, the balloon body can expand to be closely attached to the inner wall of the blood vessel, and therefore the electrodes can be closely attached to the blood vessel; the problems that in the prior art, ablation electrodes cannot be fully attached to the blood vessel or are even suspended and the like are solved; and since multipoint ablation characteristics of the multiple electrodes are combined, the efficiency of ablation is enormously improved.
Description
Technical field
This utility model relates to active medical instruments field, relates in particular to a kind of balloon electrode renal artery radio-frequency (RF) ablation conduit.
Background technology
Along with China's life-time dilatation per capita, the senile hypertension prevalence has reached 40%～60%, although effective and safe drug is more and more at present, hypertensive treatment present situation is still relatively poor." Chinese cardiovascular diseases reports 2005 " data of announcing in 2006 show that population of China hypertension awareness, treatment rate and control rate only are respectively 30.6%, 24.7%, 6.1% at present, and the hypertension prevention and control work of prompting China also is in reduced levels.Therefore hypertensive timely and effective treatment is that a whole society needs the common problem of paying close attention to.The hypertension prevalence is in rising trend in the world in recent years. and together increase with the aged tendency of population that increases rapidly.According to U.S.'s prevention, detection, assessment and the treatment hypertension whole nation 2003 the 7th time report of joint committee (JNC7), there is hyperpietic about 1,000,000,000 in the present whole world.
Especially particularly urgent for the treatment of intractable hypertension, intractable hypertension has referred to use the antihypertensive drugs (comprising diuretic) more than three kinds or three kinds also to change life style simultaneously, but blood pressure is still more than or equal to the hypertension of 140/90mmHg.It is the modal cardiovascular diseases of middle-aged and elderly people, also is the important risk factor that causes coronary heart disease, apoplexy, congestive heart failure, renal failure, aortic aneurysm, is the first cause that middle-aged and elderly people causes death, disables.
Studies show that: (renal sympathetic nerve activity RSNA) can cause renal tubules sodium water heavily to absorb increase, cause that feritin discharges and renal vascular resistance changes, thereby make hypertension the kidney sympathetic activity.And by the sympathetic nervus centripetalis of kidney the reflected signal of kidney sensor is conducted to maincenter, regulate blood pressure by the sympathetic nervus centrifugalis of kidney again.As seen RSNA can not only short-term regulate the variation of renal artery antiotasis, also is the hypertensive key factor of long term maintenance.Therefore use renal artery radio-frequency (RF) ablation conduit to carry out that renal artery is orthosympathetic to be melted for obstinate hypertension, be the hypertensive new hope for the treatment of, also be a new method of non-hypertension therapy simultaneously, and show that according to the clinical trial in external early stage this method is safely and effectively, can be widely used, can make the hyperpietic break away from the puzzlement of taking medicine every day.
At present, the existing similar equipment such as " helical form ring renal artery sympathetic nerve radio-frequency ablation electrode conduits (patent No. 200920172984.6) " in this field, its ultimate principle is, ablating electrode at the affixed given shape of end of conduit, though this kind equipment can melt renal artery, but because the diameter equidimension of ablating electrode is fixed, can not regulate, can't guarantee that ablating electrode follows the renal artery blood vessel closely to recline, and can not carry out instant monitoring temperature, can't accurately control and melt temperature, the as easy as rolling off a log not enough or ablation of excess of degree of ablation that makes, and then cause accident such as renal artery vascular puncture.
The utility model content
(1) technical problem that will solve
The purpose of this utility model is can not closely recline in order to solve ablating electrode and blood vessel, can not melt technical problems such as temperature by immediately monitoring.
(2) technical scheme
For solving the problems of the technologies described above, this utility model provides a kind of balloon electrode renal artery radio-frequency (RF) ablation conduit, comprises conduit and electrode, also comprises utricule, and described utricule is communicated in an end of described conduit, and the utricule inwall is provided with a plurality of described electrodes.
Preferably, comprise that also described valve body turns on the described conduit for the valve body that connects the pump housing.
Preferably, described valve body is Y-valve.
Preferably, also comprise a plurality of temperature sensors, described temperature sensor is connected with electrode respectively.
Preferably, also comprise electric connector, described electric connector is installed in the other end of described conduit, and is electrically connected with described electrode and described temperature sensor respectively.
Preferably, described conduit is the multitube chamber.
Preferably, described utricule is the ellipsoid shape.
Preferably, described utricule is provided with some injection orifices.
(3) beneficial effect
The balloon electrode renal artery radio-frequency (RF) ablation conduit that this utility model provides, by in utricule, injecting liquid, it is expanded in blood vessel, and then closely be posted by blood vessel, make ablating electrode and blood vessel in the utricule closely recline, carry out multiple spot in conjunction with set a plurality of electrodes and melt, effectively improve the efficient that melts.
Further, this utility model also is provided with temperature sensor, temperature that can the immediately monitoring ablating electrode, and then accurately temperature is melted in monitoring, further improve the efficient that melts, effectively prevented from melting malpracticees such as vascular puncture not enough or that ablation of excess causes; Utricule of the present utility model is provided with some injection orifices, can inject medicine or normal saline etc. as required in blood vessel, makes this utility model have more practicality; Conduit of the present utility model is set to the multitube chamber, is respectively applied to hold the lead of electrical connection, and as passage of medicine, normal saline etc. etc., and each tube chamber function is different and do not disturb mutually.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the internal structure sketch map of utricule of the present utility model;
Wherein: 1, electrode, 2, conduit, 3, utricule, 4, valve body, 5, temperature sensor, 6, electric connector, 7, injection orifice.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present utility model is described in further detail.Following examples are used for explanation this utility model, but are not used for limiting scope of the present utility model.
As shown in Figure 1, a kind of balloon electrode renal artery radio-frequency (RF) ablation conduit, comprise a plurality of electrodes 1, conduit 2, utricule 3, valve body 4 and electric connector 6, utricule 3 is communicated in an end of conduit 2, electrode 1 is packed on utricule 3 inwalls, and electrode is made by medical stainless steel, NiTi, gold, silver, platinum or the alloy etc. of softness; Electric connector 6 is installed in the other end of conduit 2, and electric connector 6 is electrically connected with electrode 1, and electric connector 6 is used for connecting the radio-frequency (RF) ablation instrument; Valve body 4 is preferably Y-valve, it turns on the conduit 2, be used for connecting the pump housing, in utricule 3, inject medicinal liquid, normal saline etc. by the pump housing, so that utricule 3 expands, the utricule 3 of expansion is close to blood vessel, and then makes the electrode 1 on utricule 3 inwalls be close to blood vessel across utricule 3, avoid in operation process electrode unsettled, influence ablation effect.
The internal structure of utricule 3 as shown in Figure 2, utricule 3 is preferably the ellipsoid shape, this circular shape is convenient to into body, and processing cost is low, be provided with a plurality of electrodes 1 and a plurality of temperature sensor 5 in it, on the inwall that is packed in utricule 3 that a plurality of electrodes 1 are evenly arranged, to reach the effect that multiple spot melts; High-precision critesistor or thermocouple etc. are adopted in temperature sensor 5, a plurality of temperature sensors 5 can be fixedly connected on electrode 1 by modes such as setting-ins, and temperature sensor 5 and electrode 1 be corresponding being connected one by one, so that immediately and monitor the temperature of each electrode accurately respectively, temperature sensor 5 and electrode 1 are electrically connected on electric connector 6 respectively, the radio-frequency (RF) ablation instrument that electric connector 6 connects, equipment such as temperature monitor are according to information such as electrode temperatures, the instant related datas such as voltage of adjusting electrode, with the efficient that raising is melted, prevent from melting deficiency or ablation of excess etc. and cause vascular puncture.
In addition, conduit 2 can adopt the fluorine class, polyurethanes, polyimide or medical macromolecular materials are made, conduit 2 is set to the multitube cavity configuration, this structure not only makes conduit have crooked motility and the accuracy of regulating, make things convenient for user that balloon electrode is accurately delivered to the target location, and fluid passage and lead channels etc. can be separated by and leave, it is taken their own roads, mutually noninterfere, electrode can be quick by the superslide seal wire, arrive the target location stably, improved practicality, in the present embodiment, valve body 4 is communicated with utricule 3 by a tube chamber, and between electrode 1 and the electric connector 6, and the lead between temperature sensor 5 and the electric connector 6 (conductor material is preferably the silver of corrosion resistant, NiTi, the enamel-covered wire of copper or copper alloy), then interts in another tube chamber of conduit 2, can delay lead and be corroded, increase the service life, improve its conduction precision; Utricule 3 is provided with some injection orifices 7, see through to inject medicinal liquid, contrast agent or normal saline etc. in this Kong Kexiang blood vessel, and the amount of liquid that penetrates from injection orifice 7 is less than the amount of liquid that injects in the utricule 3, so utricule 3 still is swelling state.
It should be noted that at last, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to preferred embodiment this utility model is had been described in detail, those skilled in the art are to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (8)
1. balloon electrode renal artery radio-frequency (RF) ablation conduit, comprise conduit (2) and electrode (1), it is characterized in that: also comprise utricule (3), described utricule (3) is communicated in an end of described conduit (2), and utricule (3) inwall is provided with a plurality of described electrodes (1).
2. balloon electrode renal artery radio-frequency (RF) ablation conduit according to claim 1 is characterized in that: comprise that also described valve body (4) turns on the described conduit (2) for the valve body (4) that connects the pump housing.
3. balloon electrode renal artery radio-frequency (RF) ablation conduit according to claim 2, it is characterized in that: described valve body (4) is Y-valve.
4. balloon electrode renal artery radio-frequency (RF) ablation conduit according to claim 1, it is characterized in that: also comprise a plurality of temperature sensors (5), described temperature sensor (5) is connected with electrode (1) respectively.
5. balloon electrode renal artery radio-frequency (RF) ablation conduit according to claim 4, it is characterized in that: also comprise electric connector (6), described electric connector (6) is installed in the other end of described conduit (2), and is electrically connected with described electrode (1) and described temperature sensor (5) respectively.
6. according to the described balloon electrode renal artery of the arbitrary claim of claim 1-5 radio-frequency (RF) ablation conduit, it is characterized in that: described conduit (2) is set to the multitube chamber.
7. according to the described balloon electrode renal artery of the arbitrary claim of claim 1-5 radio-frequency (RF) ablation conduit, it is characterized in that: described utricule (3) is the ellipsoid shape.
8. according to the described utricule electrode of the arbitrary claim of claim 1-5 renal artery radio-frequency (RF) ablation conduit, it is characterized in that: described utricule (3) is provided with some injection orifices (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220690829 CN203029378U (en) | 2012-12-13 | 2012-12-13 | Balloon electrode renal artery radiofrequency ablation catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220690829 CN203029378U (en) | 2012-12-13 | 2012-12-13 | Balloon electrode renal artery radiofrequency ablation catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203029378U true CN203029378U (en) | 2013-07-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220690829 Expired - Lifetime CN203029378U (en) | 2012-12-13 | 2012-12-13 | Balloon electrode renal artery radiofrequency ablation catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203029378U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104689458A (en) * | 2015-02-27 | 2015-06-10 | 李广平 | Intravascular radiofrequency ablating dilation catheter |
-
2012
- 2012-12-13 CN CN 201220690829 patent/CN203029378U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104689458A (en) * | 2015-02-27 | 2015-06-10 | 李广平 | Intravascular radiofrequency ablating dilation catheter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130703 |