CN201469401U - Spiral renal-artery-around renal sympathetic nerve radio-frequency ablation electrode catheter - Google Patents
Spiral renal-artery-around renal sympathetic nerve radio-frequency ablation electrode catheter Download PDFInfo
- Publication number
- CN201469401U CN201469401U CN2009201729846U CN200920172984U CN201469401U CN 201469401 U CN201469401 U CN 201469401U CN 2009201729846 U CN2009201729846 U CN 2009201729846U CN 200920172984 U CN200920172984 U CN 200920172984U CN 201469401 U CN201469401 U CN 201469401U
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- electrode
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- renal artery
- sympathetic nerve
- frequency ablation
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Abstract
The utility model discloses a spiral renal-artery-around renal sympathetic nerve radio-frequency ablation electrode catheter, which belongs to the field of the medical appliance, and comprises a bushing, an operation handle which is connected with the end of the bushing and a head-end electrode which is arranged on the front end of the bushing, wherein the end of the head-end electrode is connected with a transmission conducting wire and is arranged inside the bushing to be electrically connected with the operation handle, the head-end electrode is of a spiral structure which is formed by shaping a single electrode, the head-end electrode is preferably of a spiral structure with two helicoids which is formed by joining three sections of arcs, the diameter of each helicoid is 0.5 to 1.0 cm, the distance between the two helicoids is 0.33 cm, and the height of the head-end electrode is 1.0 cm. The catheter is arranged inside the renal artery and can be closely attached against the wall of the renal artery to form a non-annular closed-ring continuous contact with the wall of the artery, so not only all renal sympathetic nerves can be separated around the renal artery, but also the excessive damage of the renal artery can be prevented. The electrode catheter can be applied to the operation apparatus of the radio-frequency ablation blocking of the renal sympathetic nerve in the hypertension interventional therapy.
Description
Technical field
This utility model belongs to medical instruments field, is specifically related to a kind of ablating electrode conduit that is used for the hypertension interventional therapy.
Prior art
Hypertension is a commonly encountered diseases and frequently-occurring disease, and its sickness rate is up to 30-40% among the crowd that grows up.Though it is a lot of to treat the medicine of hypertension at present, still have some people can not reach the target blood pressure.A plurality of tests and clinical effectiveness show that blocking-up kidney sympathetic nerve can reach the hypertensive purpose of treatment, but up to the present, does not still have the method and apparatus of sophisticated blocking-up kidney sympathetic fiber.The method of excision domination kidney sympathetic ganglion is used in early stage research, though can reach the purpose of blood pressure lowering, damage is big, and complication is many.Recently, the radio-frequency (RF) ablation renal artery goes orthosympathetic method to obtain preliminary clinical effectiveness to reach kidney.But this method adopts single-point repeatedly to melt around renal artery, can not determine and blocks the orthosympathetic result of kidney fully, and need repeatedly provide radio frequency, and what conduit was operated has relatively high expectations.The at present sophisticated orthosympathetic apparatus of blocking-up kidney that melts is not seen play-by-play as yet.
The utility model content
The purpose of this utility model is to provide a kind of can melt the sympathetic innervation of blocking-up kidney by helical form ring renal artery, can reach once and melt, block the electrode catheter of kidney sympathetic fiber fully, called after helical form ring renal artery kidney sympathetic nerve radio-frequency ablation electrode.
Electrode catheter of the present utility model comprises a sleeve pipe, an operating grip that is connected with the sleeve pipe tail end, and the head end electrode that is positioned at the sleeve pipe front end.Characteristics are, to be that single electrode is moulding form described head end electrode, the helicoidal structure of forming by three 180 ° arcuate structure, the length of each arcuate structure is that diameter is 180 ° of arc length of 0.5-1.0cm, arcuate structure span (highly) is 0.33cm, and the longitudinal length of spiral electrode is 1.0cm.The helicoidal structure tail end that arcuate structure is formed connects conductive leads, and lead is located in the sleeve pipe, links to each other with the radio-frequency (RF) ablation instrument through end interfaces.Sleeve pipe is that flexible material is made, and bending＞90 ° can be regulated in itself and helicoidal structure junction.
Adopt above technical scheme, this utility model helical form ring renal artery kidney sympathetic nerve radio-frequency ablation electrode conduit can be in tremulous pulse be positioned over renal artery, can be posted by on the renal artery wall closely, blood vessel wall is formed the Continuous Contact of a non-annularity closed-loop, when providing radio-frequency (RF) ablation, can isolate the kidney sympathetic fiber of vertically arranging along renal artery.Both reached one week of ring renal artery, the purpose of isolating all kidney sympathetic innervations does not cause arteriorenal annular lesions again, has avoided arteriorenal excessive destruction.
Description of drawings
Fig. 1 is this utility model radio-frequency ablation electrode conduit overall structure figure.
Fig. 2 shows the cross-section structure and the size of head end electrode in this utility model radio-frequency ablation electrode conduit.The specific embodiment
Helical form ring renal artery sympathetic nerve radio-frequency ablation electrode of the present utility model shown in Fig. 1,2, comprises the operating grip 3 that a sleeve pipe 2, is connected with sleeve pipe 2 tail ends, and the head end electrode 1 that is positioned at sleeve pipe 2 front ends.Head end electrode 1 is shape in the shape of a spiral, forms by single electrode is moulding, conspires to create the helicoidal structure with two bung flanges by three sections camber lines; Every section camber line is preferably 180 ° arcuate structure, is equivalent to one and half bung flanges, and each arcuate structure span (highly) is 0.33cm.Sleeve pipe 2 is made by flexible material, and it is connected with helical form head end electrode 1 natural torsion, angle of bend adjustable extent＞90 °.Head end electrode 1 helicoidal structure tail end connects a conductive leads (omitting among the figure), and lead is located in the sleeve pipe 2, passes sleeve pipe 2 and is electrically connected with the operating grip 3 of sleeve pipe 2 tail ends, and link to each other with a radio-frequency (RF) ablation instrument by the interface on the operating grip 3.
Fig. 2 shows head end electrode 1 structure and the size that this utility model is optimized, wherein each bung flange diameter (consistent with the arc length diameter of 180 ° of arcuate structures) is 0.5-1.0cm, the spacing of two bung flanges is 0.33cm (the every section height that is equivalent to three sections camber lines), and the height of whole helical form head end electrode 1 is 1.0cm (longitudinal length that is equivalent to the head end electrode).
When this utility model uses, femoral artery at first punctures, under X-ray contrast machine perspective, through the special capable renal arteriography of renal artery guiding catheter,, select this utility model conduit of different-diameter (0.5-1.0cm) for use then according to the radiography result, through the renal artery guiding catheter, the head end spiral electrode is sent in the conduit, under X-ray contrast machine perspective, spiral electrode is sent into renal artery fully.The electrode tail end links to each other with the radio-frequency (RF) ablation instrument by conductive leads, by the radio-frequency (RF) ablation instrument, provides radio-frequency current, melts renal artery dominating neural fiber, reaches the orthosympathetic purpose of blocking-up kidney.
Claims (10)
1. helical form ring renal artery sympathetic nerve radio-frequency ablation electrode conduit, comprise a sleeve pipe, an operating grip that is connected with the sleeve pipe tail end, and the head end electrode that is positioned at the sleeve pipe front end, head end electrode tail end connects a conductive leads, is located in the sleeve pipe to be electrically connected with operating grip; It is characterized in that: described head end electrode is by the moulding helicoidal structure that forms of single electrode.
2. according to the described helical form ring of claim 1 renal artery sympathetic nerve radio-frequency ablation electrode conduit, it is characterized in that: the helicoidal structure of described head end electrode has two bung flanges.
3. according to the described helical form ring of claim 2 renal artery sympathetic nerve radio-frequency ablation electrode conduit, it is characterized in that: the bung flange of described head end electrode is composed in series by three 180 ° arcuate structure.
4. according to claim 1 or 2 or 3 described helical form ring renal artery sympathetic nerve radio-frequency ablation electrode conduits, it is characterized in that: described sleeve pipe is made by flexible material, and it is connected with helical form head end electrode natural torsion, angle of bend＞90 °.
5. according to the described helical form ring of claim 4 renal artery sympathetic nerve radio-frequency ablation electrode conduit, it is characterized in that: each bung flange diameter of described helicoidal structure is 0.5-1.0cm.
6. according to the described helical form ring of claim 4 renal artery sympathetic nerve radio-frequency ablation electrode conduit, it is characterized in that: the bung flange spacing of described helicoidal structure is 0.33cm.
7. according to the described helical form ring of claim 5 renal artery sympathetic nerve radio-frequency ablation electrode conduit, it is characterized in that: the bung flange spacing of described helicoidal structure is 0.33cm.
8. according to claim 1 or 2 or 3 described helical form ring renal artery sympathetic nerve radio-frequency ablation electrode conduits, it is characterized in that: the length of described whole helical form head end electrode is 1.0cm.
9. according to the described helical form ring of claim 4 renal artery sympathetic nerve radio-frequency ablation electrode conduit, it is characterized in that: the length of described whole helical form head end electrode is 1.0cm.
10. according to claim 5 or 6 or 7 described helical form ring renal artery sympathetic nerve radio-frequency ablation electrode conduits, it is characterized in that: the length of described whole helical form head end electrode is 1.0cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201729846U CN201469401U (en) | 2009-08-21 | 2009-08-21 | Spiral renal-artery-around renal sympathetic nerve radio-frequency ablation electrode catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201729846U CN201469401U (en) | 2009-08-21 | 2009-08-21 | Spiral renal-artery-around renal sympathetic nerve radio-frequency ablation electrode catheter |
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| CN201469401U true CN201469401U (en) | 2010-05-19 |
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| CN2009201729846U Expired - Fee Related CN201469401U (en) | 2009-08-21 | 2009-08-21 | Spiral renal-artery-around renal sympathetic nerve radio-frequency ablation electrode catheter |
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| CN102940525A (en) * | 2012-10-17 | 2013-02-27 | 上海安通医疗科技有限公司 | Multi-pole helicoidal radiofrequency ablation conduit |
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2009
- 2009-08-21 CN CN2009201729846U patent/CN201469401U/en not_active Expired - Fee Related
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