CN115590604A - Catheter assembly for non-implanted atrial shunt, radio frequency assembly, and shunt - Google Patents

Catheter assembly for non-implanted atrial shunt, radio frequency assembly, and shunt Download PDF

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Publication number
CN115590604A
CN115590604A CN202110781933.9A CN202110781933A CN115590604A CN 115590604 A CN115590604 A CN 115590604A CN 202110781933 A CN202110781933 A CN 202110781933A CN 115590604 A CN115590604 A CN 115590604A
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radio frequency
electrode
ablation
shunt device
electrode plate
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王磊
丁毅寿
张昱昕
蒲忠杰
张喜博
李向义
贺涛
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Shanghai Shape Memory Alloy Material Co Ltd
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Shanghai Shape Memory Alloy Material Co Ltd
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00053—Mechanical features of the instrument of device
    • A61B2018/00214—Expandable means emitting energy, e.g. by elements carried thereon
    • A61B2018/0022—Balloons
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
    • A61B2018/00345—Vascular system
    • A61B2018/00351—Heart
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
    • A61B2018/00595—Cauterization
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B2018/1467—Probes or electrodes therefor using more than two electrodes on a single probe

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Abstract

The invention relates to the technical field of medical equipment, in particular to a catheter assembly, a radio frequency assembly and a shunt device of a non-implanted atrial shunt device. A catheter assembly for a non-implantable atrial shunt device, comprising: an outer sheath; the middle pipe is arranged in the outer sheath pipe and forms a radio frequency pipeline with the outer sheath pipe and the middle pipe in an enclosing mode; the electrode lead is arranged in the radio frequency pipeline, and one end of the electrode lead is wound on the electrode plate along the circumferential direction of the middle pipe to form a surrounding type connecting end and is communicated with the electrode plate; the other end of the electrode lead is communicated with a radio frequency ablation instrument. The electrode lead is connected with the electrode plate in a surrounding connection mode, so that the process implementation difficulty is effectively reduced without welding, a larger space is not occupied, the electrode lead and the electrode plate can have a larger connection surface, the connection reliability of the electrode lead and the electrode plate is ensured, and the conductive effect is enhanced.

Description

Catheter assembly for non-implanted atrial shunt, radio frequency assembly and shunt
Technical Field
The invention relates to the technical field of medical equipment, in particular to a catheter assembly, a radio frequency assembly and a shunt device of a non-implanted atrial shunt device.
Background
Heart failure is a common potentially fatal disease for humans, and despite the best efforts of hospitals to treat it, it is often difficult to control the cure clinically. In particular, "preserved ejection fraction heart failure (HFpEF)" has a significant increase in the prevalence of this disease over the years, but its treatment remains a challenge to the clinician.
The existing treatment mode is to puncture at the interatrial septum of the heart, artificially create a hole, drain the blood pressure of the left atrium to the right atrium, and achieve the purpose of reducing the high pressure of the left atrium, thereby effectively improving the 'ejection fraction retention heart failure'.
During atrial septal puncture procedures, non-implanted atrial shunt devices are required. The electrode tabs and electrode leads of existing non-implantable atrial shunt devices are typically secured together by welding or adhesive bonding. However, in order to secure the connection strength by welding the electrode tabs and the electrode leads, the welding points occupy a large radial space of the catheter assembly. Complex processing is required to reduce the volume of the connection site of the electrode pads and electrode leads, which can undesirably increase the manufacturing costs of catheter assemblies for non-implanted atrial shunt devices.
Disclosure of Invention
The invention aims to solve the technical problem that the prior catheter component for the non-implanted atrial shunt device can not ensure high connection reliability of an electrode plate and an electrode lead, and simultaneously has the advantages of economy and small occupied space of the connection position of the electrode plate and the electrode lead. To solve the above problems, the present invention provides a catheter assembly for a non-implanted atrial shunt device, comprising:
an outer sheath tube;
the middle pipe is arranged in the outer sheath pipe and forms a radio frequency pipeline with the outer sheath pipe and the middle pipe in an enclosing mode; an electrode plate for tissue ablation is inserted into the radio frequency pipeline;
the electrode lead is arranged in the radio frequency pipeline, and one end of the electrode lead is wound on the electrode sheet along the circumferential direction of the middle pipe to form a surrounding type connecting end and is communicated with the electrode sheet; the other end of the electrode lead is communicated with a radio frequency ablation instrument.
Optionally, a conductive glue is filled between the outer sheath tube and the middle tube;
the conductive glue is filled on the surface of the electrode plate extending into the outer sheath tube, and the conductive glue is in full contact with the electrode plate and the electrode lead respectively.
Optionally, at the end of the encircling connection, the electrode wire is coiled around the middle tube for at least three times.
Optionally, the catheter assembly of the non-implanted atrial shunt device further comprises:
an inner tube disposed within the middle tube; the inner cavity of the inner tube is a guide wire pipeline for a guide wire to pass through, and the inner tube and the middle tube form a pressure pipeline for filling media into the limiting balloon in a surrounding mode.
A radio frequency assembly of a non-implanted atrial shunt device, comprising:
a catheter assembly; and the number of the first and second groups,
the limiting balloon has an ablation working state expanded after the medium is flushed in and a normal state in which the medium is not filled in the limiting balloon; in the ablation working state, the limiting balloon is used for limiting the position of the radio-frequency assembly;
the electrode plate is distributed in the circumferential direction of the limiting saccule, extends into the radio frequency pipeline and is communicated with the electrode lead, and the electrode plate is in contact with the surface of the atrial septal puncture hole to form atrial septal pore-forming.
Optionally, the electrode plate is fixed on the surface of the limiting balloon in a flexible circuit printing mode.
Optionally, the electrode plates are multiple and are uniformly distributed in the circumferential direction of the limiting balloon.
Optionally, the electrode sheet includes: the radio frequency pipe comprises a working section which is in contact with the surface of the atrial septal puncture hole to form an atrial septal pore-forming hole, an insulating section which faces the radio frequency pipe and extends, and an extending section which penetrates into the radio frequency pipe.
Optionally, the stop balloon comprises: the ablation catheter comprises a limiting part which is abutted against the atrial septum in the ablation working state and is of an elliptic spherical structure, an ablation part of a straight cylindrical structure, and a connecting section for connecting the ablation part and a catheter component; in the ablation working state, the diameter of the limiting part is larger than that of the ablation part;
the working section is arranged on the ablation part, and the insulating section is arranged on the connecting section.
A shunt device for a non-implanted atrial shunt, comprising:
a catheter assembly; and (c) a second step of,
the radio frequency ablation instrument is connected with the electrode plate and used for releasing radio frequency energy to the electrode plate;
and the pressure pump is used for filling or discharging media into or out of the limiting saccule.
The technical scheme of the invention has the following advantages:
1. the invention provides a catheter assembly for a non-implanted atrial shunt device, comprising: an outer sheath tube; the middle pipe is arranged in the outer sheath pipe and surrounds the outer sheath pipe and the middle pipe to form a radio frequency pipeline; an electrode slice for tissue ablation is inserted into the radio frequency pipeline; the electrode lead is arranged in the radio frequency pipeline, and one end of the electrode lead is wound on the electrode plate along the circumferential direction of the middle pipe to form a surrounding type connecting end and is communicated with the electrode plate; the other end of the electrode lead is communicated with a radio frequency ablation instrument.
In the invention, the electrode lead is connected with the electrode slice in a surrounding connection mode without welding, thereby effectively reducing the process implementation difficulty. Meanwhile, the thickness of the welding spot which is effectively removed by adopting winding connection instead of welding effectively reduces the thickness of the connecting surface of the electrode lead and the electrode plate, thereby effectively reducing the space occupation of the connecting position of the electrode lead and the electrode plate. In addition, the winding connection mode can also enable the electrode lead and the electrode plate to have larger connection surfaces, ensure the connection reliability of the electrode lead and the electrode plate and enhance the conductive effect.
2. According to the catheter assembly of the non-implanted atrial shunt device, provided by the invention, the conducting glue is filled between the outer sheath tube and the middle tube; the conductive glue is filled on the surface of the electrode plate extending into the outer sheath tube, and the conductive glue is in full contact with the electrode plate and the electrode lead respectively.
In the invention, the electrode lead and the electrode plate can be effectively and fully connected by filling the conductive glue between the outer sheath tube and the middle tube and fastening the electrode lead and the electrode plate together through the conductive glue, thereby enhancing the conductive effect.
3. The invention provides a radio frequency assembly of a non-implanted atrial shunt device, comprising: a catheter assembly; the limiting balloon has an ablation working state expanded after the medium is flushed in and a normal state that the medium is not filled in the limiting balloon; in the ablation working state, the limiting balloon is used for limiting the position of the radio frequency assembly; the electrode plates are distributed in the circumferential direction of the limiting saccule, extend into the radio frequency pipeline and are communicated with the electrode lead, and the electrode plates are in contact with the surface of the atrial septal puncture hole to form atrial septal pore-forming.
In the present invention, the method of operating a non-implanted atrial shunt device by medical personnel is altered by the provision of a stop balloon. In the operation process, a medical worker drives the limiting saccule to extend into the left atrium, so that the limiting saccule is fed into one side of the left atrium for a certain distance, and the extending distance exceeds the contact position of the electrode plate and the atrial septal puncture hole. Then, the medical worker fills the medium into the limiting balloon to make the limiting balloon in an expansion state. After the limiting saccule is in an expansion state, the medical worker pulls the limiting saccule backwards, the limiting saccule is in contact with the outer contour edge of the atrial septal puncture hole at the moment, the limbs of the medical worker can feel resistance, the limiting saccule reaches a limiting position at the moment, and the working section of the electrode plate is in contact with the surface of the atrial septal puncture hole. In this state, the electrode sheet comes into contact with the surface of the atrial septal puncture, and the electrode sheet reaches a predetermined position. Through an independent spacing sacculus, both can realize letting medical staff confirm whether the joint of spacing sacculus targets in place through feeling, guarantee that spacing sacculus is accurate to be blocked on the interatrial tissue, and then make electrode piece and interatrial puncture hole's surface position accurate relative contact, can guarantee effectively that the electrode piece accurately melts interatrial puncture hole surface, can not cause the damage to other positions yet.
4. According to the radio frequency assembly of the non-implanted atrium shunt device, the electrode plate is fixed on the surface of the limiting saccule in a flexible circuit printing mode.
According to the invention, the electrode plate and other conductive materials are printed on the surface of the limiting saccule by using a flexible circuit printing technology, the thickness and flexibility of the electrode plate of the limiting saccule formed by the process method can be greatly improved, so that the contraction size of the catheter can be smaller, the diameter size of the catheter can be further reduced, and the surgical wound can be reduced. Meanwhile, the flexible circuit printing can also draw abundant and various electrode shapes, so that the flexible circuit printing can be better matched with operation requirements.
5. According to the radio frequency assembly of the non-implanted atrial shunt device, the electrode plates are multiple and are uniformly distributed in the circumferential direction of the limiting saccule.
According to the invention, the electrode plate of the radio frequency assembly is set to be split, so that when the radio frequency reaming is carried out after the atrial septal assembly is punctured, atrial septal tissues around the puncture hole are damaged in different regions, and when the atrial septal assembly is damaged while the limiting saccule is pressurized and expanded, the puncture hole can extend along the circumferential direction of the hole, the tearing of the puncture hole along the radial direction can be effectively weakened, the forming quality of the puncture hole is improved, and the later recovery of a patient is facilitated. In addition, because annular pole piece cover among the prior art establishes outside spacing sacculus, spacing sacculus when pressurizing and when arranging to press the shrink, spacing sacculus's volume change speed is very fast, because the hardness of pole piece is far above the sacculus, leads to the pole piece when following sacculus shrink and expansion, because the too big crack that can lead to appearing on the pole piece of stress, leads to the pole piece to the inhomogeneous problem of melting of interatrial tissue. In the invention, by arranging the electrode plates into a plurality of pieces, the stress applied to the electrode plates during the supporting or shrinking of the limiting saccule can be greatly reduced, and the possibility of damage of the electrode plates is reduced, so that the service life of the electrode plates is prolonged.
6. The invention provides a radio frequency component of a non-implanted atrium shunt device, which comprises: the device comprises a working section which is in contact with the surface of the atrial septal puncture hole to form an atrial septal pore-forming hole, an insulating section which extends towards the radio frequency pipeline, and an extending section which penetrates into the radio frequency pipeline.
By dividing the electrode plate into the working section, the insulating section and the extending section, the working section which is only contacted with the atrial septal puncture hole can be effectively ensured to be in an electrified state, and other positions of the electrode plate can not be conductive.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a perspective view of a radio frequency assembly for a non-implanted atrial shunt device according to the present invention;
FIG. 2 is an enlarged schematic view of the internal structure of a catheter assembly for a non-implanted atrial shunt provided in accordance with the present invention;
FIG. 3 is a schematic view of the relative positions of the inner tubing, the middle tubing and the outer sheath provided by the present invention;
FIG. 4 is a schematic view of a non-implanted atrial shunt device in accordance with the present invention in use.
Description of reference numerals:
1-sheath canal; 2-middle pipe; 3-electrode slice; 4-electrode lead; 5-radio frequency ablation instrument; 6-conductive glue; 7-inner tube; 8-a limiting balloon; 9-a limiting part; 10-an ablation section; 11-a connecting segment; 12-a working section; 13-an insulating section; 14-an extension; 15-a catheter assembly; 16-pressure pump.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
A catheter assembly for a non-implantable atrial shunt according to this embodiment, as shown in fig. 1 and 2, includes:
an outer sheath tube 1;
the middle pipe 2 is arranged in the outer sheath pipe 1 and surrounds the outer sheath pipe 1 and the middle pipe 2 to form a radio frequency pipeline; an electrode plate 3 for tissue ablation is inserted into the radio frequency pipeline;
the electrode lead 4 is arranged in the radio frequency pipeline, and one end of the electrode lead 4 is wound on the electrode slice 3 along the circumferential direction of the middle pipe 2 to form a surrounding type connecting end and is communicated with the electrode slice 3; the other end of the electrode lead 4 is communicated with a radio frequency ablation instrument 5. The thickness of the welding spot which is effectively removed by adopting winding connection instead of welding effectively reduces the thickness of the connecting surface of the electrode lead 4 and the electrode plate 3, thereby effectively reducing the space occupation of the connecting position of the electrode lead 4 and the electrode plate 3. In addition, the winding connection mode can also enable the electrode lead 4 and the electrode plate 3 to have larger connection surfaces, ensure the connection reliability of the electrode lead 4 and the electrode plate 3 and enhance the conductive effect. In addition, in this embodiment, a conductive glue 6 is further filled between the outer sheath tube 1 and the middle tube 2; the conductive glue 6 is filled on the surface of the electrode plate 3 extending into the sheath tube 1, and the conductive glue 6 is fully contacted with the electrode plate 3 and the electrode lead 4 respectively. The electrode lead 4 and the electrode plate 3 can be effectively and fully connected by filling the conductive glue 6 between the outer sheath tube 1 and the middle tube 2 and fastening the electrode lead 4 and the electrode plate 3 together through the conductive glue 6, so that the conductive effect is enhanced;
an inner tube 7 disposed within the middle tube 2; the inner cavity of the inner tube 7 is a guide wire pipeline for a guide wire to pass through, and the inner tube 7 and the middle tube 2 enclose a pressure pipeline for filling media into the limiting saccule 8.
Certainly, in this embodiment, there is no specific limitation on whether the conductive glue 6 is filled between the sheath tube 1 and the middle tube 2, and in other embodiments, the electrode lead 4 and the electrode plate 3 may be connected by a clamping structure. The clamping structure is that a groove is arranged on the surface of the electrode plate 3, and the electrode lead 4 is embedded in the groove.
Example 2
A radio frequency assembly of a non-implantable atrial shunt device, as shown in fig. 1-3, comprising:
a catheter assembly; and (c) a second step of,
the limiting balloon 8 has an ablation working state that the limiting balloon 8 is expanded after being flushed with a medium and a normal state that the limiting balloon 8 is not filled with the medium; in the ablation working state, the limiting balloon 8 is used for limiting the position of the radio frequency assembly; in this embodiment, the stop balloon 8 comprises: the limiting part 9 which is in an oval sphere structure and is abutted against the atrial septum in the ablation working state, the ablation part 10 which is in a straight cylinder structure, and the connecting section 11 for connecting the ablation part 10 and the catheter component 15; in the ablation working state, the diameter of the limiting part 9 is larger than that of the ablation part 10; the working section 12 is arranged on the ablation part 10, and the insulating section 13 is arranged on the connecting section 11;
and the electrode plates 3 are distributed in the circumferential direction of the limiting saccule 8, extend into the radio frequency pipeline and are communicated with the electrode lead 4, and the electrode plates 3 are in contact with the surface of the atrial septal puncture hole to form atrial septal pore-forming. The electrode sheet 3 includes: a working section 12 which contacts the surface of the atrial septal puncture to form an atrial septal puncture, an insulating section 13 which extends towards the radio frequency conduit, and an extension section 14 which penetrates into the radio frequency conduit. In this embodiment, the electrode plate 3 is fixed on the surface of the limiting balloon 8 by a flexible circuit printing method. The thickness and the flexibility of the electrode plate 3 of the limiting saccule 8 formed by the process method can be greatly improved, so that the contraction size of the catheter can be smaller, the diameter size of the catheter is further reduced, and the operation wound is reduced. Meanwhile, the flexible circuit printing can also draw abundant and various electrode shapes, so that the flexible circuit printing can be better matched with the operation requirements; in addition, the electrode plates 3 are a plurality of and are uniformly distributed in the circumferential direction of the limiting balloon 8. Set up radio frequency assembly's electrode slice 3 to split type to when carrying out the radio frequency reaming after puncturing room interval subassembly, carry out regional damage of dividing to the room interval tissue around the puncture, when damaging room interval subassembly when spacing sacculus 8 pressurizes the expansion, the puncture can be followed the circumference extension in hole, can effectively weaken the puncture along radial tearing, improve the shaping quality of puncture, be favorable to patient's later stage to resume. Moreover, by arranging the electrode plates 3 into a plurality of pieces, the possibility of damage to the electrode plates 3 can be reduced even if stress is applied when the limiting saccule 8 is propped up or contracted, and therefore the service life of the electrode plates 3 is prolonged.
Example 3
A shunt device for a non-implantable atrial shunt, as shown in fig. 4, comprising:
a catheter assembly;
the radio frequency ablation instrument 5 is connected with the electrode plate 3 and used for releasing radio frequency energy to the electrode plate 3;
and the pressure pump 16 is used for filling or discharging media into or out of the limiting balloon 8.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications derived therefrom are intended to be within the scope of the invention.

Claims (10)

1. A catheter assembly for a non-implantable atrial shunt device, comprising:
an outer sheath (1);
the middle pipe (2) is arranged in the outer sheath pipe (1) and surrounds the outer sheath pipe (1) and the middle pipe (2) to form a radio frequency pipeline; an electrode slice (3) for tissue ablation is inserted into the radio frequency pipeline;
the electrode lead (4) is arranged in the radio frequency pipeline, and one end of the electrode lead (4) is wound on the electrode plate (3) along the circumferential direction of the middle pipe (2) to form a surrounding type connecting end and is communicated with the electrode plate (3); the other end of the electrode lead (4) is communicated with a radio frequency ablation instrument (5).
2. A catheter assembly of a non-implanted atrial shunt device according to claim 1, wherein a conductive glue (6) is filled between the outer sheath (1) and the middle tube (2);
the conductive glue (6) is filled on the surface of the electrode plate (3) extending into the sheath tube (1), and the conductive glue (6) is fully contacted with the electrode plate (3) and the electrode lead (4) respectively.
3. A catheter assembly of a non-implantable atrial shunt device according to claim 1, wherein said electrode wire (4) is wrapped around said middle tube (2) at least three times in said circumferential connection end position.
4. The catheter assembly of a non-implantable atrial shunt device of claim 1, further comprising:
an inner tube (7) disposed within the middle tube (2); the inner cavity of the inner tube (7) is a guide wire pipeline for a guide wire to pass through, and the inner tube (7) and the middle tube (2) enclose a pressure pipeline for filling media into the limiting balloon (8).
5. A radio frequency assembly of a non-implanted atrial shunt device, comprising:
the catheter assembly of any one of claims 1-4; and (c) a second step of,
the limiting balloon (8) has an ablation working state of being expanded after being flushed with a medium and a normal state of not being filled with the medium in the limiting balloon (8); in the ablation working state, the limiting balloon (8) is used for limiting the position of a radio frequency assembly;
electrode slice (3), electrode slice (3) distribute in the circumferencial direction of spacing sacculus (8), and stretch into in the radio frequency pipeline and with electrode wire (4) are linked together, electrode slice (3) and the surface contact of room interval puncture hole are in order to form the room interval pore-creating.
6. The radio-frequency assembly of a non-implanted atrial shunt device according to claim 5, wherein the electrode pads (3) are fixed on the surface of the stop balloon (8) by means of flexible circuit printing.
7. The radio-frequency assembly of a non-implanted atrial shunt device according to claim 5, wherein the electrode pads (3) are multiple and evenly distributed in the circumferential direction of the stop balloon (8).
8. The radio frequency assembly of a non-implanted atrial shunt device according to claim 5, wherein said electrode sheet (3) comprises: a working section (12) in contact with the surface of the atrial septal puncture to form an atrial septal puncture, an insulating section (13) extending towards the radio frequency conduit, and an extension section (14) penetrating into the radio frequency conduit.
9. The radio frequency assembly of a non-implanted atrial shunt device according to claim 8, wherein said stop balloon (8) comprises: the ablation catheter comprises a limiting part (9) which is in an elliptic sphere structure and is abutted against the atrial septum in the ablation working state, an ablation part (10) which is in a straight cylinder structure, and a connecting section (11) which is used for connecting the ablation part (10) and a catheter component (15); in the ablation working state, the diameter of the limiting part (9) is larger than that of the ablation part (10);
the working section (12) is arranged on the ablation part (10), and the insulating section (13) is arranged on the connecting section (11).
10. A shunt device for a non-implantable atrial shunt device, comprising:
the catheter assembly of any one of claims 5-9; and the number of the first and second groups,
the radiofrequency ablation instrument (5) is connected with the electrode plate (3) and is used for releasing radiofrequency energy to the electrode plate (3);
and the pressure pump (16) is used for filling or discharging media into or out of the limiting saccule (8).
CN202110781933.9A 2021-07-09 2021-07-09 Catheter assembly for non-implanted atrial shunt, radio frequency assembly, and shunt Pending CN115590604A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110781933.9A CN115590604A (en) 2021-07-09 2021-07-09 Catheter assembly for non-implanted atrial shunt, radio frequency assembly, and shunt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110781933.9A CN115590604A (en) 2021-07-09 2021-07-09 Catheter assembly for non-implanted atrial shunt, radio frequency assembly, and shunt

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CN115590604A true CN115590604A (en) 2023-01-13

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