CN114424970B - Myocardial ablation assembly - Google Patents
Myocardial ablation assembly Download PDFInfo
- Publication number
- CN114424970B CN114424970B CN202210066449.2A CN202210066449A CN114424970B CN 114424970 B CN114424970 B CN 114424970B CN 202210066449 A CN202210066449 A CN 202210066449A CN 114424970 B CN114424970 B CN 114424970B
- Authority
- CN
- China
- Prior art keywords
- puncture
- catheter
- myocardial
- probe
- balloon
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000002679 ablation Methods 0.000 title claims abstract description 52
- 230000002107 myocardial effect Effects 0.000 title claims abstract description 50
- 239000000523 sample Substances 0.000 claims abstract description 63
- 210000004165 myocardium Anatomy 0.000 claims abstract description 36
- 239000002184 metal Substances 0.000 claims abstract description 18
- 230000000694 effects Effects 0.000 claims abstract description 6
- 238000005553 drilling Methods 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000005452 bending Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims description 3
- 230000001632 homeopathic effect Effects 0.000 claims 1
- 239000000155 melt Substances 0.000 claims 1
- 238000007674 radiofrequency ablation Methods 0.000 abstract description 3
- 210000000596 ventricular septum Anatomy 0.000 description 5
- 230000035515 penetration Effects 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 206010003119 arrhythmia Diseases 0.000 description 2
- 230000006793 arrhythmia Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000003211 malignant effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000002861 ventricular Effects 0.000 description 2
- 210000000709 aorta Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 238000002695 general anesthesia Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 206010020871 hypertrophic cardiomyopathy Diseases 0.000 description 1
- 230000001969 hypertrophic effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 208000010125 myocardial infarction Diseases 0.000 description 1
- 208000003663 ventricular fibrillation Diseases 0.000 description 1
Classifications
-
- 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
- A61B18/1477—Needle-like probes
-
- 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
- A61B2018/00005—Cooling or heating of the probe or tissue immediately surrounding the probe
- A61B2018/00011—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids
-
- 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
- A61B2018/00392—Transmyocardial revascularisation
-
- 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
- A61B2018/00577—Ablation
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Veterinary Medicine (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Public Health (AREA)
- Cardiology (AREA)
- Surgical Instruments (AREA)
Abstract
The present invention provides a myocardial ablation assembly comprising: the puncture probe comprises a balloon with a hollowed surface and composed of a plurality of mutually interwoven metal wires, wherein the balloon is in a football shape, two tips of the balloon are a front end and a rear end, the balloon is positioned at the front side of a puncture catheter, the front end of the balloon is used for extending into a myocardial gap, and is used for drilling myocardium around the balloon to form a myocardial hole, the rotating mechanism is arranged in an inner cavity of the puncture catheter and is close to the front end and is used for driving the puncture probe to rotate, so that the puncture probe drills the myocardium, the front end of a connecting pipe is fixedly connected with a first electrode patch, an electrode wire of the first electrode patch passes through the connecting pipe and is electrically connected with an external power supply, and after the myocardial hole is drilled by the puncture probe, the first electrode patch which is not shielded by the metal wires of the puncture probe is used for ablating myocardium in the myocardial hole, so that the problem that the ablation range is difficult to control and the curative effect is limited in the existing radio frequency ablation is solved.
Description
Technical Field
The invention belongs to the field of medical instruments, and particularly relates to a myocardial ablation assembly.
Background
The traditional hypertrophic cardiomyopathy classical treatment method is general anesthesia open chest operation or minimally invasive treatment, the minimally invasive treatment is that a microcatheter is placed on a large ventricular septum arterial branch, then absolute alcohol is injected to artificially manufacture ventricular septum myocardial infarction, left ventricular outflow tract obstruction caused by contacting with hypertrophic ventricular septum is problematic in that the minimally invasive method cannot be performed without proper ventricular septum arterial, the operation risk is high, and malignant arrhythmia such as three-degree ventricular conduction block, ventricular fibrillation and the like easily occurs. The improved radiofrequency energy ablation is matched with minimally invasive treatment, the radiofrequency expansion catheter acts on the left ventricular septum surface to perform radiofrequency ablation, the ablation range is difficult to control, the curative effect is limited, and malignant arrhythmia is easy to occur.
Disclosure of Invention
The invention aims to provide a myocardial ablation assembly, which aims to solve the technical problems that the existing radio frequency ablation is difficult to control in ablation range and limited in curative effect.
In order to solve the technical problems, the invention adopts the following technical scheme: a myocardial ablation assembly, comprising: a puncture catheter, the front end of which is used for entering the myocardial gap,
the puncture probe consists of a balloon with hollowed surface and composed of a plurality of mutually interwoven metal wires, wherein the balloon is football-shaped, the two tips of the balloon are a front end and a rear end, the balloon is positioned at the front side of the puncture catheter, the front end of the balloon is used for extending into a myocardial gap and drilling myocardial holes around the myocardial gap,
the rotating mechanism is arranged in the inner cavity of the puncture catheter and close to the front end and is used for driving the puncture probe to rotate so as to drill the cardiac muscle by the puncture probe,
the connecting pipe is positioned in the puncture catheter and is coaxially arranged with the puncture catheter, the front end of the connecting pipe penetrates through the front end of the puncture catheter and stretches into the cavity of the puncture probe and is fixedly connected with the inner wall of the front end of the puncture probe, the front end of the connecting pipe is fixedly connected with a first electrode patch, an electrode wire of the first electrode patch penetrates through the connecting pipe and is electrically connected with an external power supply, the first electrode patch which is not shielded by a metal wire of the puncture probe is used for ablating cardiac muscle in the cardiac muscle hole after the puncture probe drills out the cardiac muscle hole, and the metal wire is heated by the first electrode patch shielded by the metal wire of the puncture probe by utilizing heat of the first electrode patch so as to ablate the cardiac muscle.
Further, the expansion catheter is positioned outside the puncture catheter and is coaxially arranged with the puncture catheter, the expansion catheter can move inwards along the puncture catheter to move towards the myocardium, one end close to the puncture probe is the front end, one end far away from the puncture probe is the rear end, the front end of the expansion catheter is fixedly connected with a second electrode patch, an electrode wire of the second electrode patch is electrically connected with an external power supply through an inner cavity of the expansion catheter, and the second electrode patch is used for ablating around an ablation part of the puncture probe after the expansion catheter stretches into the myocardium.
Further, the front end of puncture pipe has seted up circular shape first rotatory groove from the tip along its trend, circular shape second rotatory groove has been seted up along the direction of perpendicular its trend to the front end of puncture pipe, first rotatory groove is linked together with the second rotatory groove, rotary mechanism includes: the rotating part is composed of a circular plate, a support column and a support plate which are integrally connected in sequence from front to back, the circular plate is covered at the front end of the puncture catheter, the support column is of a hollow columnar structure, the support column and the circular plate are coaxially arranged, the support plate is annular, the inner ring of the support plate is connected with the rear end of the support column, the support plate is positioned in the second rotating groove, the support column is positioned in the first rotating groove, the front side of the circular plate is fixedly connected with the puncture probe,
further, the conveying ring is positioned in the puncture catheter and is spirally arranged on the outer wall of the connecting pipe, the front end of the conveying ring is fixedly connected with the rear side of the circular plate, the rear end of the conveying ring is electrically connected with an external torque motor, the torque motor is used for driving the conveying ring to rotate, and then driving the rotating piece to rotate, so that the rotating piece drives the puncture probe to rotate, and then the myocardium is drilled.
Further, a water inlet pipe is arranged on the pipe wall of the connecting pipe and close to the front end of the connecting pipe along the trend of the connecting pipe, an annular pipe is arranged on the pipe wall of the connecting pipe and close to the front end of the connecting pipe and around the periphery of the pipe wall of the connecting pipe, one end of the annular pipe is communicated with the water inlet pipe, the other end of the annular pipe is open towards cardiac muscle, and cooling water enters the annular pipe through the water inlet pipe and enters between cardiac muscle in a homeotropic manner, so that cardiac muscle after ablation of the puncture probe is cooled.
Further, the screw thread separation blade is arranged in the annular pipe along the trend of the pipeline, and the screw thread separation blade is used for increasing the resistance of water flow, so that the flow speed is reduced, and the cooling effect is improved.
Further, a plurality of through holes are formed in the pipe wall of the puncture catheter at a position close to the rear end of the pipe wall and around the pipe wall, and the myocardial ablation assembly further comprises: the pulling rope is used for pulling the puncture catheter to generate bending, adjusting the bending angle of the puncture catheter, and adjusting the entering angle of the puncture catheter into the cardiac muscle.
The beneficial effects of the invention are as follows: the coaxial arrangement of the puncture catheter and the expansion catheter meets two conditions of one-point or multi-point ablation area in myocardial ablation operation; the rotatable puncture probe is utilized to realize the rapid entry of the ablation electrode; the hollow elliptical balloon and the connecting pipe are matched with each other to realize the selectable change of the diameter of the access passage, so that the expanded catheter can quickly reach the ablation position.
Drawings
FIG. 1 is a schematic illustration of the use of a myocardial ablation assembly in accordance with the present invention;
FIG. 2 is a schematic diagram of the overall structure of a myocardial ablation assembly in accordance with the present invention;
FIG. 3 is a schematic view of the internal structure of a penetration probe of a myocardial ablation assembly in accordance with the present invention;
FIG. 4 is a schematic illustration of the structure of a penetration probe in a myocardial ablation assembly in accordance with the present invention;
FIG. 5 is a schematic view of a connecting tube in a myocardial ablation assembly in accordance with the present invention;
fig. 6 is a schematic diagram of the structure of a puncture catheter wall in a myocardial ablation assembly in accordance with the present invention.
Wherein, 1, myocardial gap; 2. a puncture catheter; 3. enlarging the catheter; 4. a penetration probe; 5. a connecting pipe; 6. a conveying ring; 401. a spring; 7. a water inlet pipe; 8. an annular tube; 9. a thread baffle; 10. a metal induction wire; 11. a first electrode patch; 12. a second electrode patch; 13. a rotation mechanism; 1301. a support column; 1302. a circular plate; 1303. a support plate; 14. a rope body; 15. a thermal insulation gasket.
Detailed Description
The invention will be described in detail below with reference to the drawings and the detailed description.
The present invention provides a myocardial ablation assembly, as shown in fig. 1-4, comprising: a myocardial ablation assembly, comprising: a puncture catheter 2, a puncture probe 4, a rotating mechanism 13, a connecting pipe 5 and an expanding catheter 3;
the front end of the puncture catheter 2 can enter the myocardial gap 1, the puncture probe 4 is positioned at the front side of the puncture catheter 2, a balloon with hollowed surface is formed by a plurality of mutually interwoven metal wires, the balloon is football-shaped, two tips are the front end and the rear end, the front end is used for extending into the myocardial gap 1, and the myocardium around the balloon is drilled to form myocardial holes;
the rotating mechanism 13 is arranged in the inner cavity of the puncture catheter 2 and near the front end and is used for driving the puncture probe 4 to rotate, so that the puncture probe 4 drills the cardiac muscle;
the connecting pipe 5 is positioned in the puncture catheter 2 and is coaxially arranged with the puncture catheter 2, the front end of the connecting pipe passes through the front end of the puncture catheter 2 and stretches into the inner cavity of the puncture probe 4 and is fixedly connected with the front end inner wall of the puncture probe 4, the front end of the connecting pipe is fixedly connected with the first electrode patch 11, an electrode wire of the first electrode patch 11 passes through the connecting pipe 5 and is electrically connected with an external power supply, the first electrode patch 11 which is not shielded by a metal wire of the puncture probe 4 is used for ablating cardiac muscle in the cardiac muscle hole after the puncture probe 4 drills out the cardiac muscle hole, and the first electrode patch 11 shielded by the metal wire of the puncture probe 4 heats the metal wire by utilizing heat of the first electrode patch to ablate the cardiac muscle.
A heat insulation gasket 15 is paved on the metal wire of the puncture probe 4 along the boundary point between the non-shielding position and the shielding position of the first electrode patch 11; the electrode patch is prevented from being thermally conducted to the shielding part of the metal wire of the puncture probe 4 after being heated, so that the ablation range is uncontrollable.
The coaxial arrangement of the puncture catheter 2 and the expansion catheter 3 meets the two conditions of one-point or multi-point ablation area in myocardial ablation operation; the rotatable puncture probe 4 is utilized to realize the rapid access of the ablation electrode; the mutual cooperation of the hollow elliptical balloon and the connecting tube 5 realizes the optional change of the diameter of the access passage, so that the expanded catheter 3 can quickly reach the ablation position.
The expanding catheter 3 is positioned outside the puncture catheter 2 and is coaxially arranged with the puncture catheter 2, the expanding catheter 3 can move inwards along the puncture catheter 2, one end close to the puncture probe 4 is the front end, one end far away from the puncture probe 4 is the rear end, the front end of the expanding catheter 3 is fixedly connected with the second electrode patch 12, the electrode wire of the second electrode patch 12 is electrically connected with an external power supply through the inner cavity of the expanding catheter 3, and the second electrode patch 12 is used for ablating around the ablation part of the puncture probe 4 after the expanding catheter 3 stretches into the cardiac muscle.
The coaxial arrangement of the puncture catheter 2 and the expansion catheter 3 meets the two conditions of one-point or multi-point ablation area in myocardial ablation operation; the rotatable puncture probe 4 is utilized to realize the rapid access of the ablation electrode; the mutual cooperation of the hollow elliptical balloon and the connecting tube 5 realizes the optional change of the diameter of the access passage, so that the expanded catheter 3 can quickly reach the ablation position.
As shown in fig. 3, a rotating mechanism 13 of the present invention is provided with a circular first rotating groove along the direction of the tip of a puncture catheter 2, a circular second rotating groove along the direction perpendicular to the direction of the tip of the puncture catheter 2, the first rotating groove is communicated with the second rotating groove, and the rotating mechanism 13 comprises: the rotating piece comprises a circular plate 1302, a support column 1301 and a support plate 1303 which are connected integrally in sequence from front to back, the circular plate 1302 covers the front end of the puncture catheter 2, the support column 1301 is of a hollow columnar structure, the support column 1301 and the circular plate 1302 are coaxially arranged, the support plate 1303 is annular, the inner ring of the support plate 1303 is connected with the rear end of the support column 1301, the support plate 1303 is located in a second rotating groove, the support column 1301 is located in a first rotating groove, and the front side of the circular plate 1302 is fixedly connected with the puncture probe 4.
The conveying ring 6 is positioned in the puncture catheter 2 and is spirally arranged on the outer wall of the connecting pipe 5, the front end of the conveying ring is fixedly connected with the rear side of the circular plate 1302, the rear end of the conveying ring is electrically connected with an external torque motor, the torque motor is used for driving the conveying ring 6 to rotate, and then driving the rotating piece to rotate, so that the rotating piece drives the puncture probe 4 to rotate, and then the myocardium is drilled.
The invention also comprises, as shown in fig. 5, a water inlet pipe 7 is arranged on the pipe wall of the connecting pipe 5 near the front end along the trend of the pipe wall, a ring pipe 8 is arranged on the pipe wall of the connecting pipe 5 near the front end around the pipe wall, one end of the ring pipe 8 is communicated with the water inlet pipe 7, the other end of the ring pipe 8 is opened towards the cardiac muscle, the ring pipe 8 is used for cooling water to enter the inside of the ring pipe through the water inlet pipe 7 and enter the cardiac muscle in a proper way, and the cardiac muscle after the puncture probe 4 is ablated is cooled.
The screw thread baffle 9 is arranged in the annular pipe 8 along the trend of the pipeline, and the screw thread baffle 9 is used for increasing the resistance of water flow, so that the flow speed is reduced, and the cooling effect is improved.
The invention also includes, as shown in fig. 6, a plurality of through holes are formed on the wall of the puncture catheter 2 near the rear end thereof and around the wall of the catheter, and the myocardial ablation assembly further includes: the pulling rope, one end of which stretches into the rear end inner cavity of the puncture catheter 2 from the outside, and the other end of which passes through the through hole, extends towards the front end of the puncture catheter 2 along the outer wall of the puncture catheter 2 and is fixedly connected with the outer wall surface of the front end of the puncture catheter 2, is used for pulling the puncture catheter 2 to generate bending and adjusting the bending angle of the puncture catheter 2 so as to adjust the entering angle of the puncture catheter 2 into the cardiac muscle.
The invention also comprises that graduation marks are uniformly arranged on the outer surface of the puncture catheter 2; the graduation marks can help the doctor to see clearly the inter-myocardial access depth of the puncture catheter 2 under the image condition.
The invention also comprises, as shown in fig. 5, a metal induction wire 10, the front end of which is close to the motor patch, is also arranged in the connecting pipe 5, which can help doctors judge the heating temperature of the electrode patch and determine the ablation temperature.
The invention is applicable to two situations of one or multiple points of the ablation area in the myocardial ablation operation; if the ablation area is a point, a puncture catheter 2 is placed along the aorta to the surface of the myocardial, after the puncture probe 4 at the front end of the puncture catheter 2 reaches the surface of the myocardial, a rotating assembly is started, so that the puncture probe 4 drills under the myocardial, after the puncture probe reaches a proper position, the rotating assembly is closed, an external power supply connected with an electrode wire in a connecting pipe 5 is started, and the electrode patch on the connecting pipe 5 is used for performing ablation at the myocardial point;
if the ablation area is multiple points, after the puncture probe 4 at the front end of the puncture catheter 2 reaches the myocardial surface, the connecting pipe 5 is dragged to the rear end of the puncture catheter 2, so that the maximum cross-sectional area of the puncture probe 4 is larger than or equal to the multiple point ablation area; thereby allowing the dilation catheter 3 to quickly reach an ablation site along the puncture catheter 2.
Claims (5)
1. A myocardial ablation assembly comprising:
a puncture catheter (2) with a front end for accessing the myocardial gap (1),
a puncture probe (4) which is a balloon with hollowed surface and composed of a plurality of mutually interwoven metal wires, wherein the two tips of the balloon are a front end and a rear end, the balloon is positioned at the front side of the puncture catheter (2), the front end of the balloon is used for extending into a myocardial gap (1) and drilling the myocardium around the balloon to form myocardial holes,
the rotating mechanism (13) is arranged in the inner cavity of the puncture catheter (2) and is close to the front end and used for driving the puncture probe (4) to rotate so that the puncture probe (4) drills the cardiac muscle,
the connecting pipe (5) is positioned in the puncture catheter (2) and is coaxially arranged with the puncture catheter (2), the front end of the connecting pipe penetrates through the front end of the puncture catheter (2) to extend into the inner cavity of the puncture probe (4) and is fixedly connected with the inner wall of the front end of the puncture probe (4), the front end of the connecting pipe is fixedly connected with the first electrode patch (11), an electrode wire of the first electrode patch (11) penetrates through the connecting pipe (5) to be electrically connected with an external power supply, the first electrode patch (11) which is not shielded by a metal wire of the puncture probe (4) is used for ablating cardiac muscle in the cardiac muscle hole after the puncture probe (4) drills out the cardiac muscle hole, and the first electrode patch (11) shielded by the metal wire of the puncture probe (4) heats the metal wire by using heat of the first electrode patch to ablate the cardiac muscle;
the front end of the puncture catheter (2) is provided with a circular first rotary groove along the trend direction from the end part, the front end of the puncture catheter (2) is provided with a circular second rotary groove along the direction vertical to the trend direction, the first rotary groove is communicated with the second rotary groove,
the rotation mechanism (13) includes:
the rotary part comprises a circular plate (1302), a support column (1301) and a support plate (1303) which are connected in sequence from front to back, wherein the circular plate (1302) is covered at the front end of a puncture catheter (2), the support column (1301) is of a hollow columnar structure, the support column (1301) and the circular plate (1302) are coaxially arranged, the support plate (1303) is annular, the inner ring of the support plate is connected with the rear end of the support column (1301), the support plate (1303) is positioned in a second rotary groove, the support column (1301) is positioned in a first rotary groove, the front side of the circular plate (1302) is fixedly connected with a puncture probe (4),
the conveying ring (6) is positioned in the puncture catheter (2) and is spirally arranged on the outer wall of the connecting pipe (5), the front end of the conveying ring is fixedly connected with the rear side of the circular plate (1302), the rear end of the conveying ring is electrically connected with an external torque motor, the torque motor is used for driving the conveying ring (6) to rotate, and then driving the rotating piece to rotate, so that the rotating piece drives the puncture probe (4) to rotate, and then the myocardium is drilled.
2. The myocardial ablation assembly of claim 1, further comprising:
the expanding catheter (3) is positioned outside the puncture catheter (2) and is coaxially arranged with the puncture catheter (2), the expanding catheter (3) can move inwards along the puncture catheter (2), one end which is close to the puncture probe (4) is the front end, one end which is far away from the puncture probe (4) is the rear end, the front end of the expanding catheter (3) is fixedly connected with the second electrode patch (12), an electrode wire of the second electrode patch (12) is electrically connected with an external power supply through an inner cavity of the expanding catheter (3), and the second electrode patch (12) is used for ablating around an ablation part of the puncture probe (4) after the expanding catheter (3) stretches into cardiac muscle.
3. A myocardial ablation assembly in accordance with claim 1 wherein,
the utility model discloses a puncture probe (4) ablation myocardial, including connecting pipe (5) and annular probe, on the pipe wall of connecting pipe (5), the position that is close to its front end has seted up inlet tube (7) along its trend on the pipe wall of connecting pipe (5), the position that is close to its front end has seted up annular pipe (8) around its pipe wall a week, the one end and the inlet tube (7) intercommunication of annular pipe (8), the other end of annular pipe (8) is opened towards the myocardial, annular pipe (8) are used for cooling water to get into in through inlet tube (7) to the homeopathic entering myocardial is cooled down to the myocardial after the puncture probe (4) melts.
4. A myocardial ablation assembly according to claim 3, characterized in that a thread baffle (9) is arranged in the annular tube (8) along the direction of the pipeline, and the thread baffle (9) is used for increasing the resistance of water flow, so that the flow speed is reduced, and the cooling effect is increased.
5. A myocardial ablation assembly according to any one of claims 1-3, wherein a plurality of through holes are provided in the wall of the puncture catheter (2) near its rear end, around the circumference of the wall, the myocardial ablation assembly further comprising: the pulling rope, one end of the pulling rope stretches into the rear end inner cavity of the puncture catheter (2) from the outside, the other end of the pulling rope penetrates through the through hole and extends to the front end of the puncture catheter (2) along the outer wall of the puncture catheter (2) and is fixedly connected with the front end outer wall surface of the puncture catheter (2), the pulling rope is used for pulling the puncture catheter (2) to bend, the bending angle of the puncture catheter (2) is adjusted, and therefore the entering angle of the puncture catheter (2) into cardiac muscle is adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210066449.2A CN114424970B (en) | 2022-01-20 | 2022-01-20 | Myocardial ablation assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210066449.2A CN114424970B (en) | 2022-01-20 | 2022-01-20 | Myocardial ablation assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114424970A CN114424970A (en) | 2022-05-03 |
| CN114424970B true CN114424970B (en) | 2024-02-02 |
Family
ID=81313930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210066449.2A Active CN114424970B (en) | 2022-01-20 | 2022-01-20 | Myocardial ablation assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114424970B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0542166A (en) * | 1991-08-20 | 1993-02-23 | Inter Noba Kk | Electrode catherter for high-frequency abrasion |
| CN109833089A (en) * | 2017-11-28 | 2019-06-04 | 杭州诺诚医疗器械有限公司 | Suitable for treating the ablation needle assemblies and ablation system of hypertrophic cardiomyopathy |
| CN209091618U (en) * | 2018-07-25 | 2019-07-12 | 南京市第一医院 | A kind of ambipolar radio frequency ablation probe |
| CN112890949A (en) * | 2021-03-22 | 2021-06-04 | 杭州睿笛生物科技有限公司 | Thick myocardium ablation system |
| CN214017804U (en) * | 2020-11-30 | 2021-08-24 | 华中科技大学同济医学院附属同济医院 | Multi-target radio frequency ablation catheter for hypertrophic cardiomyopathy |
-
2022
- 2022-01-20 CN CN202210066449.2A patent/CN114424970B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0542166A (en) * | 1991-08-20 | 1993-02-23 | Inter Noba Kk | Electrode catherter for high-frequency abrasion |
| CN109833089A (en) * | 2017-11-28 | 2019-06-04 | 杭州诺诚医疗器械有限公司 | Suitable for treating the ablation needle assemblies and ablation system of hypertrophic cardiomyopathy |
| CN209091618U (en) * | 2018-07-25 | 2019-07-12 | 南京市第一医院 | A kind of ambipolar radio frequency ablation probe |
| CN214017804U (en) * | 2020-11-30 | 2021-08-24 | 华中科技大学同济医学院附属同济医院 | Multi-target radio frequency ablation catheter for hypertrophic cardiomyopathy |
| CN112890949A (en) * | 2021-03-22 | 2021-06-04 | 杭州睿笛生物科技有限公司 | Thick myocardium ablation system |
Non-Patent Citations (1)
| Title |
|---|
| 射频消融离体心肌及热场分布的实验研究;刘佳;李薇;黄通毅;黄晓文;姚凤娟;刘东红;谢晓燕;庄博文;;中山大学学报(医学版)(05);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114424970A (en) | 2022-05-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102125460B (en) | Renal artery radio frequency ablation catheter as well as manufacturing method and application method thereof | |
| EP3355821B1 (en) | Electromagnetic tissue ablation device | |
| PT1611860E (en) | Intraosseous nerve denervation device | |
| CN206167034U (en) | Many needle points extension radiofrequency ablation electrode needle | |
| CN102949237A (en) | Probe heating device based on liquid metal | |
| CN1652728A (en) | An ablation catheter | |
| CN105943159A (en) | Adjustable water-injection ablation electrode needle | |
| CN100594008C (en) | Microwave ablation water knife | |
| CN114424970B (en) | Myocardial ablation assembly | |
| CN104958094B (en) | A kind of stereotaxis minimal invasion punctures intracranial lesion treatment system | |
| WO2022228428A1 (en) | Cooling sleeve and optical fiber catheter having same | |
| CN106037930B (en) | A kind of soft bar needle of microwave ablation | |
| CN202044343U (en) | Radio frequency ablation catheter for renal artery | |
| CN204744403U (en) | Big liver cancer microwave ablation needle | |
| CN116327350B (en) | Ablation needle assembly and ablation system | |
| CN217853277U (en) | Bipolar adjustable radiofrequency ablation electrode and radiofrequency ablation device | |
| CN206499525U (en) | A kind of water-cooled cooling type microwave melt needle | |
| CN205795797U (en) | A kind of shank expansion adjusting system of adjustable water filling ablating electrode pin | |
| CN204708984U (en) | A kind of high-intensity microwave ablation needle | |
| CN215130022U (en) | Microwave ablation needle suitable for interventional ablation treatment of large liver cancer | |
| CN211131352U (en) | Cryoablation needle with adjustable target area | |
| CN114052894A (en) | Multi-electrode radio frequency ablation needle | |
| CN109717944A (en) | A kind of freeze melting device and its application method | |
| CN107115146A (en) | With the tumour Microwave Coagulation Therapy aciculiform antenna for taking out fluid-filling structure | |
| CN114305673B (en) | Microwave ablation catheter and device for portal vein cancer embolism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |