CN217488818U - Double-cavity chemical ablation balloon catheter and chemical ablation combined product - Google Patents

Abstract

The utility model discloses a two-chamber chemistry melts sacculus pipe and two-chamber chemistry melts combination product. This two-chamber chemical ablation sacculus pipe includes pipe body and sacculus, the distal end of pipe body is the double-cavity structure, the pipe body has wire chamber and sufficient chamber, the distal end of pipe body has the seal wire export, fill export and sufficient export, the wire chamber is used for guiding the seal wire, the seal wire export, fill export and wire chamber intercommunication, sufficient export and sufficient chamber intercommunication, the wire chamber is used for guiding the seal wire, the export of filling of the distal end of wire chamber is used for filling absolute ethyl alcohol, contrast medium or liquid medicine, near-end to distal end direction along the pipe body, sufficient export, fill export and seal wire export and distribute in proper order, the radial dimension of pipe body reduces by near-end to distal end direction in succession, the sacculus is connected in the pipe body and communicates with each other with sufficient export. The double-cavity chemical ablation balloon catheter is convenient to use, saves time and labor and improves the operation efficiency.

Description

Double-cavity chemical ablation balloon catheter and chemical ablation combined product

Technical Field

The utility model relates to the field of medical equipment, especially relate to a two-chamber chemistry melts sacculus pipe and two-chamber chemistry melts combination product.

Background

Atrial fibrillation is the most common tachyarrhythmia in the clinic. Epidemiological investigation shows that the number of patients with atrial fibrillation in China exceeds 800 million, the incidence rate is continuously improved along with the age, and the incidence rate of atrial fibrillation of people over 65 years old reaches 9%. The probability of cerebral apoplexy, heart failure and cardiovascular death of patients with atrial fibrillation is obviously increased, and the disability and death rate is extremely high, thus seriously threatening the physical health of people. Currently, radio frequency ablation becomes a first-line treatment method for partial paroxysmal atrial fibrillation patients, but persistent atrial fibrillation is the biggest difficulty in the field of atrial fibrillation ablation due to high recurrence rate and high ablation difficulty, and the reason is that radio frequency energy cannot sufficiently and thoroughly intervene epicardial structures such as Marshall veins and the like to a great extent.

Marshall vein is left major vein degeneration residual vestige in embryonic period, it is not merely the epicardial passageway of connecting coronary sinus and left atrium, contains conduction fasciculus, autonomic nerve fibre etc. simultaneously, plays important role in the triggering and maintaining of atrial arrhythmia, such as atrial fibrillation, atrial flutter etc.. Because it is located epicardium and surrounded by structures such as fat pad, the catheter ablation difficulty through the endocardium approach is extremely high.

The traditional Marshall vein ablation is a way of thoracotomy or pericardial cavity puncture, but the two methods have large trauma and high complication risk. The waterless alcoholic chemical ablation of the Marshall vein through the catheter is a great technical innovation in the field of atrial fibrillation ablation, combines the techniques and technologies of electrophysiology and coronary artery, can avoid the risk of surgical operation or pericardial puncture, can damage all atrial muscles of the Marshall vein and branch dominant regions thereof, and has a far better effect than the Marshall vein ablated through the surgical operation or pericardial puncture.

The multi-center random contrast research VENUS research aiming at Marshall vein absolute ethyl alcohol chemical ablation for treating persistent atrial fibrillation proves that Marshall vein absolute ethyl alcohol chemical ablation can improve the ablation effect of the persistent atrial fibrillation, can obviously reduce recurrence of the atrial fibrillation/atrial velocity, and reduces the recurrence of the atrial fibrillation and the possibility of re-ablation. Through the technology, the event-free survival rate of the continuous atrial fibrillation, the left atrial flutter and the recurrent atrial fibrillation ablation is expected to be improved by 15% on the current basis, an innovative technology is provided for the conditions that the atrial fibrillation cannot be achieved and cannot be completely ablated through a catheter, and the ablation efficiency is greatly improved. Marshall vein alcohol ablation treatment atrial fibrillation is safe relatively, and patient's tolerance is better, along with the skilled of technique, effectively avoids the not thorough or cardiac perforation that melts and excessively arouses of pipe ablation, reduces the operation complication that the pipe melts, has become the hot problem in atrial fibrillation treatment field in recent years.

The importance of Marshall venous absolute alcohol chemical ablation is more and more emphasized, and more doctors begin to try to apply the operation mode to treat atrial fibrillation. However, the current instruments for Marshall vein absolute ethyl alcohol chemical ablation have certain limitations, and doctors creatively develop catheters and balloon instruments for coronary artery into Marshall vein absolute ethyl alcohol chemical ablation. Because the coronary vein and Marshall vein have a tortuous path and an angle, the pipe diameter is very small, much time is spent in finding the Marshall vein and establishing a channel in the operation process, the existing OTW balloon needs to be withdrawn from a guide wire for alcohol perfusion, and the contrast confirmation is carried out after the guide wire is inserted into a guide wire exchange catheter, so that the repeated operation is time-consuming and labor-consuming. And the operation is combined with pulmonary vein isolation and improvement of a left atrial mechanism, Marshall vein absolute ethyl alcohol chemical ablation is only a small part of the whole atrial fibrillation treatment operation, and if the part of the operation can be efficiently completed, the operation is greatly beneficial to patients and doctors.

The importance of Marshall venous absolute alcohol chemical ablation is more and more emphasized, and more doctors begin to try to apply the operation mode to treat atrial fibrillation. However, the existing instruments for Marshall venous anhydrous ethanol chemical ablation have certain limitations, and doctors creatively expand the catheter and balloon instruments for coronary artery to be used for Marshall venous anhydrous ethanol chemical ablation. Because the coronary vein and Marshall vein have tortuous path, narrow drilling angle and small pipe diameter, the Marshall vein and Marshall vein need much time to find out the Marshall vein and establish the channel in the operation process, the prior coaxial catheter (OTW) balloon must withdraw from the guide wire to carry out alcohol perfusion, and the operation is repeated after inserting the guide wire to exchange the catheter for radiography confirmation, which wastes time and labor.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide a double-lumen chemical ablation balloon catheter aiming at the problems of inconvenient use, time and labor waste and low efficiency of the existing Marshall vein absolute ethyl alcohol chemical ablation instrument.

The utility model provides a two-chamber chemical ablation sacculus pipe, includes pipe body and sacculus, the distal end of pipe body is two-chamber structure, the pipe body has wire chamber and sufficient chamber, the distal end of pipe body has the seal wire export, fills export and sufficient export, the wire chamber is used for guiding the seal wire, the seal wire export, fills the export with wire chamber intercommunication, sufficient export with sufficient chamber intercommunication, wire chamber is used for guiding the seal wire, the distal end of wire chamber fills the export and is used for filling absolute ethyl alcohol, contrast medium or liquid medicine, along the near-end to the distal end direction of pipe body, fill the export and the seal wire export distributes in proper order, the radial dimension of pipe body reduces by near-end to distal end direction in succession, the sacculus connect in the pipe body and with sufficient export communicates with each other, the balloon is in a first inflated state when the balloon is not inflated and in a second inflated state when the balloon is inflated.

In some embodiments, the distal end of the catheter body sequentially forms a first segment, a second segment and a third segment from the proximal end to the distal end, the radial dimensions of the third segment, the second segment and the first segment are continuously reduced, the guide wire outlet is located at the first segment, the perfusion outlet is located at the second segment, the filling outlet is located at the third segment, and the balloon is at least partially connected to the third segment.

In some of these embodiments, the first section is curved toward the outside of the catheter body;

and/or the first stage is provided with a first developing slot position for installing a developing material, and the first developing slot position can realize the full-stage development of the first stage; and/or the port part of the first section bit has elasticity.

In some of these embodiments, the first segment has a radial maximum dimension of no greater than 1 mm;

and/or the outside of the catheter body is coated with an outer layer reinforcing pipe.

In some embodiments, the distal end of the balloon and the shaft of the balloon are located at the second position, the proximal end of the balloon is located at the third position, and the diameter of the shaft of the balloon is smaller than that of the third position under negative pressure.

In some embodiments, the double-lumen chemical ablation balloon catheter further comprises a visualization ring, wherein the visualization ring is sleeved at the second section position and is positioned inside the balloon.

In some of these embodiments, the balloon has an inflated radial dimension of 1mm to 3 mm;

and/or the axial length of the balloon is 2-5 mm;

and/or, the seal wire chamber is located fill with sufficient intracavity, the seal wire chamber with it is coaxial structure to fill with sufficient chamber, perhaps the seal wire chamber with it is integral type double-lumen tube structure to fill with sufficient chamber.

In some embodiments, the double-lumen chemical ablation balloon catheter further comprises a Y-shaped hemostatic valve disposed at a proximal position of the catheter body, the Y-shaped hemostatic valve being in communication with the guidewire lumen;

be provided with on the boughs of Y type hemostasis valve with be provided with on the seal wire joint of seal wire chamber intercommunication, the collateral branch with the filling of seal wire chamber intercommunication connects, have on the pipe body with the filling joint of filling the chamber intercommunication, Y type hemostasis valve can open and shut in order to realize the seal wire connects can seal or open, works as when Y type hemostasis valve is opened, Y type hemostasis valve can supply the seal wire business turn over, works as when Y type hemostasis valve is closed, can pass through filling the joint to the sacculus is filled pressure or pressure release, and passes through fill and connect and fill absolute ethyl alcohol, contrast agent or liquid medicine.

Another object of the present invention is to provide a dual chamber chemical ablation assembly.

A double-cavity chemical ablation combined product comprises a bending sheath tube, a guide wire and the double-cavity chemical ablation balloon catheter; transfer curved sheath pipe and be used for placing at coronary sinus mouth and pass through the seal wire guide the sacculus pipe is ablated to two-chamber chemistry gets into the coronary sinus, and is right the guide wire chamber radiography of the sacculus pipe is ablated to two-chamber chemistry is in order to confirm Marshall vein position, the sacculus of the sacculus pipe is ablated to two-chamber chemistry is used for shutoff Marshall vein mouth under the second is full state, the guide wire chamber of the sacculus pipe is ablated to Marshall vein internal injection anhydrous alcohol realization and is ablated to the two-chamber chemistry.

The double-cavity chemical ablation balloon catheter is convenient to use, saves time and labor and improves the operation efficiency. The utility model discloses a two-chamber chemical ablation sacculus pipe, along the near-end to the distal end direction of pipe body, be full of export, pour into export and seal wire export in proper order and distribute in proper order so that the radial dimension of pipe body reduces by near-end to distal end direction in succession, so, the distal end of pipe body easily gets into the Marshall vein about the internal diameter 1mm, has improved the convenience of operation. The utility model discloses a two-chamber chemical ablation sacculus pipe has set up the double lumen pipe, realizes the sharing of seal wire chamber and filling chamber, and the seal wire chamber both can be used for guiding the seal wire, also can fill anhydrous alcohol, contrast medium or liquid medicine. The balloon has a first filling state when the balloon is not filled and a second filling state when the balloon is filled, the Marshall venous orifice can be blocked through the second filling state, the balloon can be pressurized and decompressed through the filling cavity under the condition of retaining the guide wire, and meanwhile, the balloon is subjected to alcohol perfusion or radiography through the perfusion cavity, so that the aim of frequently exchanging the guide wire and the catheter body is fulfilled, the catheter body is realized, and the operations of radiography, blood vessel superselection, blocking and ablation are completed under the condition of retaining the guide wire; in addition, ablation can be repeated due to insufficient ablation, the guide wire and the catheter body do not need to be exchanged in the whole process, operation is convenient, operation time is greatly shortened, and subsequent operation can be performed after ablation is completed quickly.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the application, and that other drawings can be derived from these drawings by a person skilled in the art without inventive effort.

For a more complete understanding of the present application and its advantages, reference is now made to the following descriptions taken in conjunction with the accompanying drawings. Wherein like reference numerals refer to like parts in the following description.

Fig. 1 is a schematic view of a dual lumen chemical ablation balloon catheter in accordance with an embodiment of the present invention;

fig. 2 is a schematic view of a radial cross section of a catheter body of a double lumen chemical ablation balloon catheter in accordance with an embodiment of the present invention;

fig. 3 is a schematic view of a radial cross section of a catheter body of a double-lumen chemical ablation balloon catheter according to another embodiment of the present invention;

fig. 4 is a schematic view of a dual lumen chemical ablation balloon catheter according to another embodiment of the present invention in use.

Description of the reference numerals

10. A dual lumen chemical ablation balloon catheter; 110. a catheter body; 111. a guidewire lumen; 112. filling the cavity; 1141. A first segment bit; 1142. a second segment bit; 1143. a third segment; 1144. an outer layer reinforcement tube; 120. a balloon; 130. a developing ring; 141. a guidewire junction; 142. filling a connector; 143. filling the joint; 144. a Y-shaped hemostatic valve;

20. bending the sheath;

30. a guide wire;

40. the coronary sinus; 41. the coronary sinus ostium;

50. marshall vein.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

It should be noted that in the following description, "proximal" generally refers to the end closer to the physician during normal operation, and correspondingly, "distal" generally refers to the end farther from the physician during normal operation. It is also noted that the radial dimension represents a dimension perpendicular to the axial direction of the catheter body, for example, when the structure of the catheter body is cylindrical, the radial dimension represents the outer diameter.

The embodiment of the application provides a double-cavity chemical ablation balloon catheter 10 to solve the problems that the instrument is inconvenient to use, wastes time and energy and is low in efficiency in the existing Marshall vein 50 anhydrous ethanol chemical ablation operation. The following description will be made with reference to the accompanying drawings.

Fig. 1 shows an exemplary double-lumen chemical ablation balloon catheter 10 provided in an embodiment of the present application, and fig. 1 is a schematic structural view of the double-lumen chemical ablation balloon catheter 10 provided in an embodiment of the present application. The dual-lumen chemical ablation balloon catheter 10 of the present application can be used for Marshall vein 50 intra-ablation.

In order to more clearly illustrate the structure of the double-lumen chemical ablation balloon catheter 10, the double-lumen chemical ablation balloon catheter 10 will be described with reference to the accompanying drawings.

For example, referring to fig. 1, a double-lumen chemical ablation balloon catheter 10 includes a catheter body 110 and a balloon 120.

The distal end of the catheter body 110 has a double lumen structure, and specifically, the catheter body 110 has a guidewire lumen 111 and an inflation lumen 112. The distal end of the catheter body 110 is provided with a guide wire outlet, a perfusion outlet and a filling outlet, the guide wire cavity 111 is used for guiding the guide wire 30, the guide wire outlet and the perfusion outlet are communicated with the guide wire cavity 111, the filling outlet is communicated with the filling cavity 112, the guide wire cavity 111 is used for guiding the guide wire, and the perfusion outlet at the distal end of the guide wire cavity 111 is used for perfusing absolute ethyl alcohol, a contrast agent or a liquid medicine. Along the near-end to distal end direction of catheter body 110, full export, the export of filling and the guidewire export in proper order distribute in proper order so that catheter body 110's radial dimension reduces from near-end to distal end direction in succession, because the internal diameter of Marshall vein 50 is about 1mm, consequently above-mentioned gradient sets up can guarantee that catheter body 110's distal end smoothly gets into Marshall vein 50. Balloon 120 is connected to catheter body 110 and communicates with the inflation outlet. Balloon 120 has a first inflated state when it is not inflated and a second inflated state when it is inflated, and the second inflated state of balloon 120 when it is inflated can effect occlusion of the Marshall vein ostium.

In some of these embodiments, referring to fig. 2, the guidewire lumen 111 is located within the filling lumen 112, and the guidewire lumen 111 is in a coaxial configuration with the filling lumen 112; alternatively, referring to FIG. 3, the guidewire lumen 111 and the inflation lumen 112 are in the form of an integral dual lumen tube. In other embodiments, the location and specific configuration of the guidewire lumen 111 and the inflation lumen 112 on the catheter body 110 are not limiting, for example, as shown in FIG. 2, the guidewire lumen 111 is generally configured with a circular cross-section.

In some embodiments, referring to fig. 1, the distal end of the catheter body 110 sequentially forms a first section 1141, a second section 1142, and a third section 1143 from the proximal end to the distal end. The radial dimensions of the third segment bit 1143, the second segment bit 1142, and the first segment bit 1141 are continuously reduced. The guidewire exit is located at the first segment position 1141. The irrigation outlet is located at the second stage 1142. The filling outlet is located at the third segment 1143. Balloon 120 is at least partially attached to third segment 1143. The exterior of the catheter body 110 is covered with an outer stiffening tube 1144.

In some embodiments, referring to FIG. 1, the first section 1141 is curved toward the outside of the catheter body. The first section 1141 is bent and inclined at a certain angle with the axial direction of the catheter body 110, so that the guide wire outlet of the first section 1141 always points to one side of the catheter wall in the coronary vein, and the catheter body 110 is rotated at the moment, so that the first section 1141 rotates in the circumferential direction in the vein, and can be quickly and conveniently found and enter any branch vein such as the Marshall vein 50.

In some embodiments, referring to fig. 1, the first stage 1141 has a first developing slot for mounting a developing material. The first developing slot is provided with a developing material, and the first developing slot can realize the full-section development of the first section 1141. The port of the first segment 1141 is flexible, which facilitates real-time determination of the specific position of the first segment 1141. The developing material can be gold, platinum or platinum alloy, and the developing material is used for improving the positioning accuracy in the operation. Preferably, the first stage 1141 is designed for full stage visualization, the port portion of the first stage 1141 is made of a softer material so that it does not damage tissue during use, and the curved portion of the first stage 1141 is made of a harder material to achieve retention of its shape. Under the X-ray, the curved shape and orientation of the first section 1141 can be seen, which is convenient for the operator to operate and use.

In some of these embodiments, the radial maximum dimension of the first segment 1141 is no greater than 1 mm. When first section position 1141 cylindric structure, the external diameter of first section position 1141 is not more than 1mm, so set up, be convenient for first section position 1141 get into the Marshall vein 50 about the internal diameter is 1mm fast.

In some of these embodiments, second staging location 1142 has a second developer slot that mounts developer material. The distal end of the balloon 120 and the shaft of the balloon 120 are located at the second section 1142, and the proximal end of the balloon 120 is located at the third section 1143, and preferably, the proximal end of the balloon 120 abuts against the third section 1143. The diameter of the shaft of the balloon 120 is smaller than the diameter of the third section 1143 under negative pressure, so that the proximal end of the balloon 120 just covers the inflation opening.

In some embodiments, referring to fig. 1, the double lumen chemical ablation balloon catheter 10 further comprises a visualization ring 130. The developing ring 130 is sleeved at the second section 1142 and located inside the balloon 120. The two ends of the visualization ring 130 within the balloon 120 are used to indicate the specific location of the balloon 120 in the vessel. The material of the developing ring 130 may be gold, platinum or platinum alloy, etc., and the developing ring 130 is used to improve the accuracy of the positioning during the operation.

In some of these embodiments, the balloon 120 has a radial dimension of 1mm to 3mm after inflation; the inflation of the balloon 120 to the desired diameter can be controlled according to the actual vessel size. And/or the axial length of the balloon 120 is 2-5 mm. The first section 1141 can enter a very thin blood vessel such as a Marshall vein 50 to drive the balloon 120 at the second section 1142 to enter, the third section 1143 does not enter the Marshall vein, and the balloon 120 seals the orifice of the Marshall vein. The portion of the catheter body 110 after the third position 1143 (near the proximal direction) need not enter the Marshall vein 50. It should be noted that the size of the balloon 120 is designed to be able to close the mouth of the blood vessel, so that the inside of the Marshall vein 50 is sufficiently ablated, the size of the balloon 120 should not be too large, and when the size of the balloon 120 is too large, the normal blood flow at other parts of the coronary vein is obstructed. In this embodiment, the radial maximum dimension of the balloon 120 is 1 mm-3 mm, the axial length of the balloon 120 is 2-5 mm, the Marshall vein opening can be blocked, and the normal blood flow of other parts of the coronary vein cannot be blocked, and the balloon 120 with the above dimensions is small in size, and can be conveyed, charged and decompressed more smoothly, and the time can be saved.

In some of these embodiments, the balloon 120 is a semi-compliant balloon 120.

In some of these embodiments, the dual lumen chemical ablation balloon catheter 10 further comprises a Y-hemostasis valve 144, the Y-hemostasis valve 144 disposed at a proximal location of the catheter body 110, the Y-hemostasis valve 114 in communication with the guidewire lumen 111.

In some embodiments, referring to fig. 1, the proximal end of the catheter body 110 has a guidewire port 141, a perfusion port 142, and a filling port 143. Specifically, a main branch of the Y-shaped hemostatic valve 114 is provided with a guide wire connector 141 communicated with the guide wire cavity 111, a lateral branch is provided with a perfusion connector 142 communicated with the guide wire cavity 111, the catheter body 110 is provided with a filling connector 143 communicated with the filling cavity 112, the Y-shaped hemostatic valve 144 can be opened and closed, the guide wire connector 141 can be sealed or opened, when the Y-shaped hemostatic valve 144 is opened, the Y-shaped hemostatic valve 144 can be used for the guide wire 30 to enter and exit, when the Y-shaped hemostatic valve 144 is closed, the balloon 120 can be pressurized or depressurized through the filling connector 143, and absolute ethyl alcohol, a contrast agent or a liquid medicine can be perfused through the perfusion connector 142. It should be noted that the main branch of the Y-shaped hemostatic valve 114 refers to the horizontal part of the structure of the Y-shaped hemostatic valve 144 in fig. 1, and the side branch of the Y-shaped hemostatic valve 114 refers to the inclined upward extending part of the structure of the Y-shaped hemostatic valve 144 in fig. 1.

Another object of the present invention is to provide a dual chamber chemical ablation assembly.

Referring to fig. 4, a double-lumen chemical ablation combination product includes a bending sheath 20, a guide wire 30 and the double-lumen chemical ablation balloon catheter 10. The bending sheath 20 is used to place at the coronary ostium 41 and guide the dual lumen chemical ablation balloon catheter 10 over the guidewire 30 into the coronary sinus 40. The perfusion exit port in the side wall of the leading end of the guidewire lumen 111 of the dual lumen chemical ablation balloon catheter 10 was visualized to confirm the Marshall vein 50 location. The balloon 120 of the dual lumen chemical ablation balloon catheter 10 is used to occlude Marshall vein ostia in the second, inflated state. The perfusion outlet of the side wall of the front end of the guide wire cavity 111 of the double-cavity chemical ablation balloon catheter 10 is used for injecting anhydrous alcohol into the Marshall vein 50 to achieve ablation.

It is still another object of the present invention to provide a chemical ablation method.

A chemical ablation method using the dual-cavity chemical ablation combination product comprises the following steps:

referring to fig. 4, fig. 4 is a schematic view of a double-lumen chemical ablation balloon catheter according to another embodiment of the present invention in a use state, the bending-adjustable sheath 20 is placed at the coronary sinus ostium 41, the control guide wire 30 enters the bending-adjustable sheath 20, and the guide wire cavity 111 of the double-lumen chemical ablation balloon catheter 10 is controlled to cooperate with the guide wire 30, so that the double-lumen chemical ablation balloon catheter 10 enters the coronary sinus 40 from the bending-adjustable sheath 20 along the guide wire 30.

The Marshall vein position is confirmed through imaging of a perfusion outlet on the side wall of the front end of the guide wire cavity 111 of the double-cavity chemical ablation balloon catheter 10, the Marshall vein opening is confirmed, the Marshall vein opening is pointed and falls into the Marshall vein opening through twisting by means of bending of the first section 1141 of the double-cavity chemical ablation balloon catheter, and then the Marshall vein 50 enters along the Marshall vein opening through the angle of the front end of the double-cavity chemical ablation balloon catheter 10 and the guide wire 30.

And controlling the balloon 120 of the double-cavity chemical ablation balloon catheter 10 to be in a second filling state to seal the Marshall vein opening, and injecting anhydrous alcohol into the Marshall vein 50 through the guide wire cavity 111 of the double-cavity chemical ablation balloon catheter 10 to realize ablation.

To sum up, the double-cavity chemical ablation balloon catheter 10 is convenient to use, saves time and labor and improves operation efficiency. The utility model discloses a two-chamber chemical ablation sacculus pipe 10, along the near-end to the distal end direction of pipe body 110, be full of export, pour into export and seal wire export and distribute in proper order so that the radial dimension of pipe body 110 reduces by near-end to distal end direction in succession, so, in the distal end of pipe body 110 easily got into the Marshall vein 50 about 1mm of internal diameter, improved the convenience of operation. The utility model discloses a two-chamber chemical ablation sacculus pipe 10 has set up the double lumen pipe, realizes guide wire chamber 111 and fills the sharing in chamber, and guide wire chamber 111 both can be used for guiding seal wire 30, also can fill anhydrous alcohol, contrast medium or liquid medicine. The balloon 120 has a first filling state when the balloon is not filled and a second filling state when the balloon is filled, the Marshall venous orifice can be blocked through the second filling state, the balloon 120 can be pressurized and decompressed through the filling cavity 112 under the condition that the guide wire 30 is reserved, and meanwhile, the balloon 120 is subjected to alcohol infusion or radiography through the guide wire cavity 111, so that the aim of not frequently exchanging the guide wire 30 and the catheter body 110 is fulfilled, one catheter body 110 is realized, and operations of radiography, blood vessel selection, blockage and ablation are completed under the condition that the guide wire 30 is reserved; in addition, ablation can be repeated due to insufficient ablation, the guide wire 30 and the catheter body 110 do not need to be exchanged in the whole process, the operation is convenient, the operation time is greatly shortened, and subsequent operation can be performed after the ablation is quickly completed.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. The utility model provides a two-chamber chemical ablation sacculus pipe, its characterized in that, includes pipe body and sacculus, the distal end of pipe body is two-chamber structure, the pipe body has wire chamber and sufficient chamber, the distal end of pipe body has the wire outlet, fills export and sufficient export, the wire outlet, fill export with wire chamber intercommunication, sufficient export with sufficient chamber intercommunication, wire chamber is used for guiding the seal wire, the distal end of wire chamber fills the export and is used for filling absolute ethyl alcohol, contrast medium or liquid medicine, along the near-end to distal end direction of pipe body, fill the export and the wire outlet distributes in proper order, the radial dimension of pipe body is reduced by near-end to distal end direction in succession, the sacculus connect in the pipe body and with sufficient export communicates with each other, the balloon is in a first inflated state when the balloon is not inflated and in a second inflated state when the balloon is inflated.

2. The catheter of claim 1, wherein the distal end of the catheter body sequentially forms a first section, a second section and a third section from the proximal end to the distal end, the radial dimensions of the third section, the second section and the first section are continuously reduced, the guide wire outlet is located at the first section, the perfusion outlet is located at the second section, the filling outlet is located at the third section, and the balloon is at least partially connected to the third section.

3. The dual lumen chemical ablation balloon catheter of claim 2, wherein the first section is curved toward the outside of the catheter body;

and/or the first section is provided with a first developing slot position for installing a developing material, and the first developing slot position can realize the full-section development of the first section; and/or the port part of the first segment has elasticity.

4. The double-lumen chemical ablation balloon catheter according to any of claims 2 to 3, wherein the first section has a radial maximum dimension of no more than 1 mm;

and/or the outside of the catheter body is coated with an outer layer reinforcing pipe.

5. The double-lumen chemical ablation balloon catheter according to any one of claims 2 to 3, wherein the distal end of the balloon and the shaft of the balloon are located at the second section, the proximal end of the balloon is located at the third section, and the diameter of the shaft of the balloon is smaller than that of the third section under negative pressure.

6. The double-lumen chemical ablation balloon catheter according to claim 5, further comprising a visualization ring sleeved at the second section and located inside the balloon.

7. The double-lumen chemical ablation balloon catheter according to any one of claims 1 to 3 and 6, wherein the balloon has an inflated radial dimension of 1mm to 3 mm;

and/or the axial length of the balloon is 2-5 mm.

8. The double-lumen chemical ablation balloon catheter according to any one of claims 1 to 3 or 6, wherein the guide wire lumen is located in the filling lumen, and the guide wire lumen and the filling lumen are in a coaxial structure, or the guide wire lumen and the filling lumen are in an integrated double-lumen tube structure.

9. The double-cavity chemical ablation balloon catheter according to any one of claims 1 to 3 and 6, further comprising a Y-shaped hemostatic valve, wherein the Y-shaped hemostatic valve is arranged at the proximal end of the catheter body and is communicated with the guide wire cavity;

be provided with on the boughs of Y type hemostasis valve with be provided with on the seal wire joint of seal wire chamber intercommunication, the collateral branch with the filling of seal wire chamber intercommunication connects, have on the pipe body with the filling joint of filling the chamber intercommunication, Y type hemostasis valve can open and shut in order to realize the seal wire connects can seal or open, works as when Y type hemostasis valve is opened, Y type hemostasis valve can supply the seal wire business turn over, works as when Y type hemostasis valve is closed, can pass through filling the joint to the sacculus is filled pressure or pressure release, and passes through fill and connect and fill absolute ethyl alcohol, contrast agent or liquid medicine.

10. A double-cavity chemical ablation combined product, which is characterized by comprising a bending sheath tube, a guide wire and the double-cavity chemical ablation balloon catheter of any one of claims 1 to 9; transfer curved sheath pipe and be used for placing at coronary sinus mouth and pass through the seal wire guide the sacculus pipe is ablated to two-chamber chemistry gets into the coronary sinus, and is right the guide wire chamber radiography of the sacculus pipe is ablated to two-chamber chemistry is in order to confirm Marshall vein position, the sacculus of the sacculus pipe is ablated to two-chamber chemistry is used for shutoff Marshall vein mouth under the second is full state, the guide wire chamber of the sacculus pipe is ablated to Marshall vein internal injection anhydrous alcohol realization and is ablated to the two-chamber chemistry.

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