CN106691578B - Electrophysiology catheter - Google Patents
Electrophysiology catheter Download PDFInfo
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- CN106691578B CN106691578B CN201510424551.5A CN201510424551A CN106691578B CN 106691578 B CN106691578 B CN 106691578B CN 201510424551 A CN201510424551 A CN 201510424551A CN 106691578 B CN106691578 B CN 106691578B
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Abstract
The invention provides an electrophysiology catheter which comprises a catheter intervention section, a first adjustable bending section and a second adjustable bending section, wherein one end of the catheter intervention section is connected with the first adjustable bending section and the second adjustable bending section. The electrophysiology catheter can realize simultaneous mapping and stimulation of a plurality of parts in the heart on a single electrophysiology catheter, thereby not only saving the cost economically, but also reducing the operation time and the wound and pain of the patient by one venipuncture for the patient.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an electrophysiology catheter.
Background
At present, the electrophysiology catheter is widely applied to medical practice, and the mapping ablation catheter is one of the electrophysiology catheters and is mainly used for recording electrophysiology signals of all parts in the heart and electrically stimulating the heart so as to achieve the purpose of treating heart diseases. The application method comprises the steps of firstly puncturing femoral vein blood vessels or internal jugular vein blood vessels, conveying the catheter to different positions in the heart along the blood vessel cavity under X-ray fluoroscopy, and carrying out electrophysiological examination or mapping on the heart. In addition, a single mapping catheter and a single ablation catheter may also be used for mapping and ablation, respectively.
At present, in the mapping ablation catheters on the market, one mapping ablation catheter can map and stimulate only one part in the heart. If multiple sites are to be mapped or stimulated simultaneously, multiple mapping ablation catheters must be placed simultaneously. For doctors, the time for placing the mapping ablation catheter and the exposure amount of the X-ray are required to be increased to accurately position and display the position of the mapping ablation catheter, so that the operation time is increased. For the patient, mapping and stimulation to multiple sites inside the heart increases the economic burden and physical and mental trauma of the patient.
Disclosure of Invention
The invention aims to provide an electrophysiology catheter, which aims to solve the problems that when a single electrophysiology catheter only works at one part in a heart and needs to work at a plurality of different parts in the heart at the same time, a plurality of electrophysiology catheters need to be put into the heart at the same time, the operation is complex, and the operation time is increased.
To solve the above technical problem, the present invention provides an electrophysiology catheter, comprising: the section is intervene to the pipe, first adjustable curved section and the adjustable curved section of second, the pipe intervene the one end of section with first adjustable curved section reaches the adjustable curved section of second is connected.
Optionally, in the electrophysiology catheter, the first adjustable bending section and the second adjustable bending section are both provided with head electrodes.
Optionally, the electrophysiology catheter further comprises a magnetic field sensor, and the magnetic field sensor is close to the head electrode.
Optionally, in the electrophysiology catheter, a plurality of electrode sets are disposed on each of the first adjustable bending section and the second adjustable bending section, each of the electrode sets includes a plurality of electrodes, and the electrode sets are discontinuously arranged on the first adjustable bending section and the second adjustable bending section.
Optionally, in the electrophysiology catheter, the plurality of electrodes in each of the electrode sets are arranged at equal intervals.
Optionally, in the electrophysiology catheter, the plurality of electrodes in each of the electrode sets are alternately arranged at two different intervals.
Optionally, the electrophysiology catheter further comprises a handle, a first traction wire and a second traction wire; the handle is connected with the catheter intervention section, and the first traction wire and the second traction wire are arranged in the catheter intervention section; one end of the first traction wire is fixed in the first adjustable bent section, and the other end of the first traction wire is arranged in the handle; one end of the second traction wire is fixed in the second adjustable bending section, and the other end of the second traction wire is arranged in the handle.
Optionally, in the electrophysiology catheter, a control mechanism is disposed on the handle, and the control mechanism is connected to the first traction wire and the second traction wire and is configured to control the first traction wire and the second traction wire to move in the catheter intervention section, so as to change the bending shape of the first adjustable bending section and the second adjustable bending section.
Optionally, in the electrophysiology catheter, the control mechanism includes a first knob and a second knob, the first knob is connected with the first pull wire, and the second knob is connected with the second pull wire.
Optionally, in the electrophysiology catheter, a counter bore is arranged at one end of the catheter intervention section, and the first adjustable bending section and the second adjustable bending section are fixed in the counter bore.
In the electrophysiology catheter provided by the invention, the electrophysiology catheter comprises a catheter intervention section, a first adjustable bending section and a second adjustable bending section, and one end of the catheter intervention section is connected with the first adjustable bending section and the second adjustable bending section. The electrophysiology catheter can realize simultaneous work of a plurality of parts in the heart on a single electrophysiology catheter, thereby not only saving the cost economically, but also reducing the venipuncture for a patient once, greatly shortening the operation time and reducing the wound and pain of the patient. In addition, the magnetic field sensor is arranged on one side of each electrode group, so that the position of the adjustable bending section of the electrophysiological catheter can be accurately displayed, a doctor is well guided to perform electrophysiological surgery, the exposure of a patient under X-rays is reduced, and the success rate and the safety of the surgery are improved.
Drawings
FIG. 1 is a front view of an electrophysiology catheter in accordance with an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view taken along line A-A' of FIG. 1;
FIG. 3 is a schematic cross-sectional view taken at B-B' of FIG. 1;
FIG. 4 is a schematic cross-sectional view at C-C' of FIG. 1;
FIG. 5 is a longitudinal cross-sectional view of FIG. 4;
FIG. 6 is a schematic longitudinal cross-sectional view of the junction of the interventional catheter section and the adjustable bend section.
In the figure, a first adjustable bending section-1; the second adjustable bending section 1'; a catheter access section-2; a counter bore-20; a handle-3; a magnetic field inductor-4; a first traction wire-5; a second traction wire 5'; a single lumen tube-10; a multi-lumen tube-11; an electrode-12; an electrode lead-13; magnetic field induction line-40; knob-30, 30'; a pull wire mount-50; spring ring-51; and compiling a network management-52.
Detailed Description
The electrophysiology catheter proposed by the present invention is further explained in detail with reference to the figures and the specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
Referring to fig. 1, which is a front view of an electrophysiology catheter in an embodiment of the present invention, as shown in fig. 1, the electrophysiology catheter includes: section 2, first adjustable curved section 1 and the adjustable curved section 1 'of second are intervene to the pipe, the pipe intervene section 2 one end with first adjustable curved section 1 reaches adjustable curved section 1' of second is connected. Wherein, the first adjustable bending section 1 and the second adjustable bending section 1' are both provided with electrodes. Preferably, a plurality of electrode sets are arranged on each of the first adjustable bending section 1 and the second adjustable bending section 1'. The number of adjustable bending sections includes, but is not limited to, two, that is, there may be a third adjustable bending section and a fourth adjustable bending section … … nth adjustable bending section in addition to the first adjustable bending section 1 and the second adjustable bending section 1'. The number of the adjustable bending sections is determined according to the number of the parts which are actually mapped and stimulated simultaneously.
Referring to fig. 1 and fig. 6, the electrophysiology catheter in this embodiment further includes a handle 3, a first pull wire 5 and a second pull wire 5', the handle 3 is connected to the catheter intervention section, the first pull wire 5 and the second pull wire 5' are both disposed in the catheter intervention section 2, one end of the first pull wire 5 is fixed in the first adjustable bending section 1, and the other end of the first pull wire 5 is disposed in the handle 3; one end of the second traction wire 5' is fixed in the second adjustable bending section 1', and the other end of the second traction wire 5' is arranged in the handle 3.
In this embodiment, the handle 3 is provided with a first knob 30 and a second knob 30 'for adjusting the bending changes of the first adjustable bending section 1 and the second adjustable bending section 1', respectively, and the first pull wire 5 fixed in the handle 3 is connected with the first knob 30; a second traction wire 5 'fixed in the handle 3 is connected to a second knob 30'. Of course, in other embodiments, other control mechanisms, such as a horizontal moving mechanism, may also be used to control the pull wires to achieve the purpose of changing the bending shape of the adjustable bending section, or two pull wires may also be disposed in one adjustable bending section, and bidirectional bending control may be performed through a rack and pinion or a turbine worm, etc., which is not limited in the present invention.
In this embodiment, when the doctor controls the first knob 30 on the handle 3 with one hand, the first adjustable bending section 1 is bent under the traction of the first traction wire 5 connected with the first knob 30, and similarly, when the doctor controls the second knob 30 'on the handle 3 with one hand, the second adjustable bending section 1' is bent under the traction of the second traction wire 5 'connected with the second knob 30'. Thus, on a single electrophysiology catheter, mapping and stimulation of the coronary sinus and the right atrium can be achieved with the first adjustable curve segment 1, and mapping and stimulation of the right ventricle and the his bundle can be achieved with the second adjustable curve segment 1'.
In order to better understand the internal structures of the first adjustable bending section 1 and the second adjustable bending section 1' at different positions, the first adjustable bending section and the second adjustable bending section are divided into a first section, a second section and a third section which are connected in sequence, and the third section of the first adjustable bending section and the third section of the second adjustable bending section are connected with the catheter intervention section 2. The details of fig. 2 to 5 are specifically explained below.
In this embodiment, the head ends of the first adjustable bending section 1 and the second adjustable bending section 1' are both provided with head electrodes, and the tube body is provided with a ring electrode. Because the internal structures of the first adjustable bending section 1 and the second adjustable bending section 1 'are the same, the subsequent contents are only analyzed by the structure of the first adjustable bending section 1, and the structure of the second adjustable bending section 1' refers to the analysis of the structure of the first adjustable bending section 1. Of course, those skilled in the art will also appreciate that the internal structure of first adjustable bend 1 and second adjustable bend 1' may not be identical.
Referring to fig. 2, a cross-sectional view at a-a 'of fig. 1 is shown, the cross-section a-a' being located in the first section of the first adjustable bending section 1, near the distal tip electrode. Fig. 2 clearly shows the structure of the first adjustable bending section 1 in the first section, that is, the first section of the first adjustable bending section 1 is a single lumen tube 10, a magnetic field sensor 4 and an electrode lead 13 are arranged in the single lumen tube 10, and the electrode lead 13 is connected to a head electrode on the first adjustable bending section 1. The magnetic field sensor 4 is close to the head electrode. A sleeve 6 is arranged outside the magnetic field inductor 4, and the sleeve 6 is made of polyimide material. The cannula 6 is fixed with the magnetic field sensor 4 and the single lumen tube 10, for example by polyurethane glue curing.
Referring to fig. 3, fig. 3 is a schematic cross-sectional view at B-B 'in fig. 1, the cross-section B-B' is located in the second section of the first adjustable bending section 1. Fig. 3 clearly shows the structure of the second section of the first adjustable bending section 1, that is, the second section of the first adjustable bending section 1 is a multi-lumen tube 11, and an electrode lead 13, a magnetic field induction wire 40 and a pull wire fixing member 50 are respectively disposed in two lumens of the multi-lumen tube 11. The traction wire fixing member 50 is separately provided in one cavity, and the electrode lead 13 and the magnetic field induction wire 40 are provided in the same cavity.
One end of the magnetic field induction line 40 is connected with the magnetic field inductor 4, and the other end of the magnetic field induction line 40 is fixed in the handle 3. The pull wire securing member 50 is fixed to the multi-lumen tube 11 for connection of the first pull wire 5, for example by laser welding, crimping, resistance welding or soldering. In contrast to fig. 2, fig. 3 shows a further electrode lead 13 for connecting the ring electrode on the first adjustable bend 1.
Referring to fig. 4 and 5, fig. 4 is a schematic cross-sectional view taken along line C-C 'of fig. 1, the cross-section C-C' being located in the third section of the first adjustable bending section 1. As is clear from fig. 4, the structure in the third section of the first adjustable bending section 1 can be known, that is, the third section of the first adjustable bending section 1 is a multi-lumen tube 11, the third section and the second section are the same multi-lumen tube 11, preferably, the first pull wire 5, the electrode lead 13 and the magnetic field induction wire 40 are respectively arranged in two lumens of the multi-lumen tube 11, the first pull wire 5 is separately arranged in one lumen, and the electrode lead 13 and the magnetic field induction wire 40 are arranged in the same lumen. The magnetic field sensing wire 40 in the third section of the first adjustable bend 1 is an extension of the magnetic field sensing wire 40 in the second section of the first adjustable bend 1. More electrode leads 13 are illustrated in fig. 4 for connecting more ring electrodes than in fig. 3.
In this embodiment, in order to protect the first traction wire 5, a spring ring 51 is arranged outside said first traction wire 5 to reduce contact between the first traction wire 5 and other structures. In practical application of the mapping tube, under traction of the first traction wire 5, the first adjustable bending section 1 undergoes bending change, and in order to facilitate the first traction wire 5 to pull the first adjustable bending section 1 and realize deformation of the first adjustable bending section 1, the surface of the coil 51 is further coated with a coating, and the material of the coating is preferably PTFE (polytetrafluoroethylene) or FEP (fluorinated ethylene propylene copolymer). In addition, referring to fig. 5, in order to protect the spring ring 51, a woven mesh tube 52, preferably a polyimide layer woven mesh tube, is sleeved on the outer side of the spring ring 51.
In the present embodiment, the magnetic field sensor 4 is only disposed near the head electrode, but in other embodiments, the magnetic field sensor may be disposed at both the second end and the third segment to better display the position of the catheter and reduce the exposure under X-ray.
Further, a plurality of electrode sets are continuously or intermittently arranged on the first adjustable bending section 1 and/or the second adjustable bending section 1'. Referring to fig. 1, a structure in which the plurality of electrode sets are discontinuously arranged on the first adjustable bending section 1 and the second adjustable bending section 1' is shown, where the spaced arrangement means that two adjacent electrode sets are discontinuously arranged, and there is a distance of a space, and the distance is preferably 10 to 105 mm. Through the arrangement scheme, the two parts at a certain distance can be mapped or stimulated simultaneously by utilizing one adjustable bending section. The mapping or stimulation locations are different and the distances are different, e.g., the distances may be set larger when mapping or stimulating the high right atrial and right ventricular apices and smaller when mapping or stimulating the his bundle and right ventricular apex. The pipe diameter of the first adjustable bending section 1 and the second adjustable bending section 1' is 2F-6F.
Further, each of the electrode groups includes a plurality of electrodes 12, and the distances between the electrodes 12 may be equal or different, for example, the distance between each electrode and the adjacent electrode is 2mm, 5mm or 10mm, and the distance between each electrode and the adjacent electrode may also be 2mm and 5mm alternately arranged, or 2mm and 8mm alternately arranged.
In order to obtain a potential signal for each electrode 12 in each electrode group, an electrode lead 13 is provided in the first adjustable bending section 1 and the second adjustable bending section 1' of the electrophysiology catheter, as shown in fig. 3 and 4, the electrode lead 13 is connected with the electrodes 12 in the plurality of electrode groups, preferably one electrode 12 per electrode lead 13.
Preferably, the electrode 12 is a ring electrode, the diameter of the ring electrode is 0.5-2.0 mm, and the length of the ring electrode is 0.5-1.2 mm. The edge of the ring electrode is subjected to smooth transition treatment by using ultraviolet glue so as to avoid damage to the blood vessel wall when the ring electrode enters the blood vessel.
Please refer to fig. 6, which is a schematic longitudinal sectional view of the connection between the catheter access section 2 and the adjustable bending section. As shown in FIG. 6, the far end of the catheter intervention section 2 is provided with a counter bore 20, the first adjustable bending section 1 and the second adjustable bending section 1' are fixed in the counter bore 20, wherein the depth of the counter bore 20 is preferably 1.0-2.0 mm, and the diameter of the counter bore 20 is 1.0-5.0 mm.
In the above embodiments, a mapping ablation catheter with an electrode is used as an example, and in other embodiments, the mapping ablation catheter may be a single mapping catheter or an ablation catheter, or may be other electrophysiology catheters without an electrode, such as an electrophysiology catheter with a cryoballoon, which is not limited in this respect.
In summary, in the electrophysiology catheter provided by the present invention, the electrophysiology catheter includes a catheter intervention section, a first adjustable bending section and a second adjustable bending section, and one end of the catheter intervention section is connected to the first adjustable bending section and the second adjustable bending section. The electrophysiology catheter can realize that a single electrophysiology catheter works on a plurality of parts in the heart at the same time, thereby not only saving the cost economically, but also reducing the venipuncture for a patient once, greatly shortening the operation time and reducing the wound and pain of the patient. In addition, the magnetic field sensor is arranged on one side of each electrode group, so that the position of the adjustable bending section of the electrophysiological catheter can be accurately displayed, a doctor is well guided to carry out electrophysiological surgery, the exposure of a patient under X-rays is reduced, and the success rate and the safety of the surgery are improved.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (9)
1. An electrophysiology catheter, comprising: the device comprises a catheter intervention section, a first adjustable bending section, a second adjustable bending section, a handle, a first traction wire and a second traction wire, wherein one end of the catheter intervention section is connected with the first adjustable bending section and the second adjustable bending section; the handle is connected with the catheter intervention section, and the first traction wire and the second traction wire are arranged in the catheter intervention section; one end of the first traction wire is fixed in the first adjustable bending section, the other end of the first traction wire is arranged in the handle, and the first traction wire is used for changing the bending shape of the first adjustable bending section; one end of the second traction wire is fixed in the second adjustable bending section, the other end of the second traction wire is arranged in the handle, and the second traction wire is used for changing the bending shape of the second adjustable bending section; wherein the curvature of the first adjustable curvature section and the curvature of the second adjustable curvature section can be varied separately.
2. The electrophysiology catheter of claim 1, wherein a tip electrode is disposed on each of the first adjustable bend segment and the second adjustable bend segment.
3. The electrophysiology catheter of claim 2, further comprising a magnetic field sensor proximate the tip electrode.
4. The electrophysiology catheter of claim 1, wherein each of the first adjustable bend segment and the second adjustable bend segment has a plurality of electrode sets disposed thereon, each of the electrode sets including a plurality of electrodes, the electrode sets being intermittently arranged on the first adjustable bend segment and the second adjustable bend segment.
5. The electrophysiology catheter of claim 4, wherein the plurality of electrodes in each of the electrode sets are arranged at equal intervals.
6. The electrophysiology catheter of claim 4, wherein the plurality of electrodes in each of the electrode sets are alternately arranged at two different spacings.
7. The electrophysiology catheter of claim 1, wherein a control mechanism is disposed on the handle, the control mechanism coupled to the first pull wire and the second pull wire for controlling the first pull wire and the second pull wire to move within the interventional section of the catheter to change the curvature of the first adjustable curve segment and the second adjustable curve segment.
8. The electrophysiology catheter of claim 7, wherein the control mechanism includes a first knob and a second knob, the first knob being coupled to the first pull wire and the second knob being coupled to the second pull wire.
9. The electrophysiology catheter of any one of claims 1-8, wherein one end of the catheter access section is provided with a counter bore, and the first adjustable bend section and the second adjustable bend section are fixed in the counter bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510424551.5A CN106691578B (en) | 2015-07-17 | 2015-07-17 | Electrophysiology catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510424551.5A CN106691578B (en) | 2015-07-17 | 2015-07-17 | Electrophysiology catheter |
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| CN106691578A CN106691578A (en) | 2017-05-24 |
| CN106691578B true CN106691578B (en) | 2020-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510424551.5A Active CN106691578B (en) | 2015-07-17 | 2015-07-17 | Electrophysiology catheter |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102686178A (en) * | 2010-01-23 | 2012-09-19 | 日本来富恩株式会社 | Electrode catheter |
| CN103800072A (en) * | 2012-11-09 | 2014-05-21 | 上海微创电生理医疗科技有限公司 | Terminal electrode and method for assembling terminal electrode and electrophysiology catheter |
| CN103908342A (en) * | 2013-01-08 | 2014-07-09 | 韦伯斯特生物官能(以色列)有限公司 | Catheter With Multiple Spines Of Different Lengths Arranged In One Or More Distal Assemblies |
| CN204318750U (en) * | 2014-11-27 | 2015-05-13 | 上海微创电生理医疗科技有限公司 | A kind of electrophysiologicalcatheter catheter |
| CN104644162A (en) * | 2013-11-21 | 2015-05-27 | 韦伯斯特生物官能(以色列)有限公司 | Flexible multiple-arm diagnostic catheter |
| CN204951145U (en) * | 2015-07-17 | 2016-01-13 | 上海微创电生理医疗科技有限公司 | Electroproduction reason pipe |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120303019A1 (en) * | 2010-12-25 | 2012-11-29 | Xue Zhao | Kind of cardiac ablation catheter with guide-wire |
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2015
- 2015-07-17 CN CN201510424551.5A patent/CN106691578B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102686178A (en) * | 2010-01-23 | 2012-09-19 | 日本来富恩株式会社 | Electrode catheter |
| CN103800072A (en) * | 2012-11-09 | 2014-05-21 | 上海微创电生理医疗科技有限公司 | Terminal electrode and method for assembling terminal electrode and electrophysiology catheter |
| CN103908342A (en) * | 2013-01-08 | 2014-07-09 | 韦伯斯特生物官能(以色列)有限公司 | Catheter With Multiple Spines Of Different Lengths Arranged In One Or More Distal Assemblies |
| CN104644162A (en) * | 2013-11-21 | 2015-05-27 | 韦伯斯特生物官能(以色列)有限公司 | Flexible multiple-arm diagnostic catheter |
| CN204318750U (en) * | 2014-11-27 | 2015-05-13 | 上海微创电生理医疗科技有限公司 | A kind of electrophysiologicalcatheter catheter |
| CN204951145U (en) * | 2015-07-17 | 2016-01-13 | 上海微创电生理医疗科技有限公司 | Electroproduction reason pipe |
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Address after: 201318 Shanghai city Pudong New Area zhouputown Tianxiong road 588 Lane No. twenty-eighth 1-28 Patentee after: SHANGHAI MICROPORT EP MEDTECH Co.,Ltd. Address before: 201318 Shanghai city Pudong New Area zhouputown Tianxiong road 588 Lane No. twenty-eighth 1-28 Patentee before: SHANGHAI MICROPORT EP MEDTECH Co.,Ltd. |
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