CN113558748A - Balloon ablation catheter and ablation system adopting same - Google Patents

Balloon ablation catheter and ablation system adopting same Download PDF

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Publication number
CN113558748A
CN113558748A CN202110874754.XA CN202110874754A CN113558748A CN 113558748 A CN113558748 A CN 113558748A CN 202110874754 A CN202110874754 A CN 202110874754A CN 113558748 A CN113558748 A CN 113558748A
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CN
China
Prior art keywords
balloon
heating
flexible pipe
pipe body
heater
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.)
Pending
Application number
CN202110874754.XA
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Chinese (zh)
Inventor
李晓光
孙号
丁莉
鲁祥松
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Canyon Medical Inc
Beijing Hospital
Original Assignee
Canyon Medical Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Canyon Medical Inc filed Critical Canyon Medical Inc
Priority to CN202110874754.XA priority Critical patent/CN113558748A/en
Publication of CN113558748A publication Critical patent/CN113558748A/en
Pending legal-status Critical Current

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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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/36—Image-producing devices or illumination devices not otherwise provided for
    • A61B90/37—Surgical systems with images on a monitor during operation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • A61M25/1018—Balloon inflating or inflation-control devices
    • 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
    • A61B2018/00023—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids closed, i.e. without wound contact by the fluid
    • 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
    • A61B2018/00053—Mechanical features of the instrument of device
    • A61B2018/00273—Anchoring means for temporary attachment of a device to tissue
    • A61B2018/00279—Anchoring means for temporary attachment of a device to tissue deployable
    • A61B2018/00285—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
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00696—Controlled or regulated parameters
    • A61B2018/00714—Temperature
    • 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
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00773—Sensed parameters
    • A61B2018/00791—Temperature
    • 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
    • A61B2018/044—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating the surgical action being effected by a circulating hot fluid
    • A61B2018/046—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating the surgical action being effected by a circulating hot fluid in liquid form
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/36—Image-producing devices or illumination devices not otherwise provided for
    • A61B90/37—Surgical systems with images on a monitor during operation
    • A61B2090/378—Surgical systems with images on a monitor during operation using ultrasound

Abstract

The invention relates to a balloon ablation catheter and an ablation system adopting the catheter, wherein the catheter comprises a flexible pipe body, a balloon and a heater, a heating pipeline is arranged in the flexible pipe body, the balloon is sleeved at the front end of the flexible pipe body, and the heating pipeline is communicated with the balloon; the heater is arranged in the heating pipeline of the flexible pipe body; the balloon generates elastic deformation through the pressure of the heating medium conveyed by the heating pipeline, and the radiation range is controlled according to the elastic deformation of the balloon; the system conveys a heating medium into the balloon through a heating pipeline, so that the balloon is elastically deformed; the heater is used for heating the heating medium so that the temperature of the heating medium in the balloon reaches a preset value. The medical balloon in-situ inactivation system heats liquid in the balloon, the heat of the medical balloon is used for in-situ inactivation of the tumor, the elastic deformation of the balloon can be determined according to the size of the tumor in the cavity, the workload of a doctor is reduced, and the safety of an operation is improved.

Description

Balloon ablation catheter and ablation system adopting same
Technical Field
The invention relates to a balloon ablation catheter and an ablation system using the same, and belongs to the technical field of medical instruments and application.
Background
The microwave ablation technology mainly utilizes a microwave therapeutic instrument, uses a microwave ablation needle to directly puncture a tumor part, generates a microwave field to enable polar molecules in tissues to generate high-speed motion, generates heat through mutual friction, rapidly heats up in the tumor, and leads cancer cell protein to denature and solidify to cause irreversible necrosis when the temperature is raised to about 50-60 ℃, thereby achieving the purposes of killing tumor cells and treating cancer for a patient. Therefore, the existing microwave ablation needle and the radio frequency electrode all adopt high temperature to inactivate tumors so as to ensure that the specific temperature is reached during tumor ablation, but during operation, the radiation ranges of the microwave ablation needle and the radio frequency electrode are often determined in advance. When the ablation needle or the radio-frequency electrode is developed, a lot of verification is needed, the radiation range is determined, and then the operation can be performed, so that a lot of manpower, material resources and financial resources are needed in the process of developing the ablation needle and the radio-frequency electrode, and a doctor needs to determine the radiation range of microwave ablation needles of different models before the operation so as to perform corresponding microwave ablation treatment, so that a lot of work is added to the doctor invisibly.
Chinese patent publication No. CN110575251A discloses a balloon-type flexible microwave ablation catheter, which utilizes a flexible tube and a flexible microwave radiation unit disposed at the distal end of the flexible tube to ablate tumors in the lumen, and actually utilizes microwave radiation to inactivate tumors in situ, so that the microwave radiation range of the flexible microwave radiation unit is determined before the operation, and the technical problem of determining the radiation range before the operation is not solved, thereby increasing the workload of doctors and the unsafety of the operation.
Disclosure of Invention
In order to solve the technical problems, the invention provides a flexible balloon ablation catheter which can reduce the workload of doctors and ensure the safety of ablation operation and an ablation system adopting the catheter.
In order to solve the technical problems, the invention provides a balloon ablation catheter as one aspect of the invention, which comprises a flexible pipe body, a balloon and a heater, wherein a heating pipeline is arranged in the flexible pipe body, the balloon is sleeved at the front end of the flexible pipe body, and the heating pipeline is communicated with the balloon; the heater is arranged in the heating pipeline of the flexible pipe body; the balloon generates elastic deformation through the pressure of the heating medium conveyed by the heating pipeline, and the radiation range is controlled according to the elastic deformation of the balloon.
As another aspect of the invention, a balloon ablation system is also provided, which comprises the balloon ablation catheter, a main control unit and a liquid delivery unit; the liquid conveying unit is used for conveying a heating medium into the balloon through a heating pipeline so as to enable the balloon to generate elastic deformation; the heater is used for heating the heating medium so that the temperature of the heating medium in the balloon reaches a preset value; the main control unit is used for controlling and executing a preset lesion ablation program.
The invention has the following beneficial effects: the heating medium in the saccule is heated by the heater, and the tumor in-situ inactivation is carried out by utilizing the heat of the saccule, so that the defect that the radiation range needs to be determined before an operation when the tumor in-situ inactivation is carried out by utilizing microwave radiation in the prior art is overcome. The invention can determine the elastic deformation of the balloon according to the size of the tumor in the cavity, and the elastic deformation of the balloon is the radiation range, so that the radiation range does not need to be determined before the operation, thereby greatly reducing the workload of doctors and improving the safety of the operation.
Drawings
The invention will be further explained with reference to the drawings.
Fig. 1 is a schematic structural view of a balloon ablation catheter.
Fig. 2 is a schematic view of direction a-a in fig. 1.
Fig. 3 is a schematic view of the direction B-B in fig. 1.
Fig. 4 is a schematic view of fig. 1 from direction C-C.
Reference numerals: 1. a balloon; 2. a heater; 3. a flexible pipe body; 4. a cooling liquid inlet channel; 4-1, cooling liquid outlet channels; 4-2, cooling liquid inlet and outlet exchange channels; 5. a guide wire; 6. a temperature measuring channel; 6-1, a temperature acquisition sensor; 7. heating the pipeline; 7-1, liquid inlet; 8. and a developing ring.
Detailed Description
Example one
The embodiment relates to a balloon ablation catheter, which comprises a flexible pipe body 3, a balloon 1 and a heater 2, wherein the flexible pipe body 3 can be bent at will and can be restored to the original shape, and the flexible pipe body 3 can pass through a human organ channel such as a blood vessel and a trachea in a human body. The flexible pipe body 3 is usually provided with a guide wire 5 therein to play a role of guiding and keeping the shape, which is the prior art and is not described in detail. A heating pipeline 7 is arranged in the flexible pipe 3, the balloon 1 is sleeved at the front end of the flexible pipe body 3, the heating pipeline 7 is communicated with the balloon 1 through a liquid inlet 7-1, and the heater 2 is arranged in the heating pipeline 7 of the flexible pipe body 3; the balloon 1 is elastically deformed by the pressure of the heating medium conveyed by the heating pipeline 7, and the radiation range is controlled according to the elastic deformation of the balloon 1. The heater 2 can adopt resistance wire heating, microwave heating, infrared heating or heat exchange mode, and this is prior art, and no longer repeated.
In this embodiment, as shown in fig. 1, the balloon 1 is disposed at the front end of the flexible pipe body 3, the flexible pipe body 3 penetrates through the balloon 1 and extends forward for a distance, the extending distance is preferably 1-5 cm, the balloon 1 conveys a heating medium through a heating pipeline 7 and enters the balloon 1 from a liquid inlet 7-1, and the balloon 1 is elastically deformed by liquid pressure. In order to make the temperature of the heating medium in the balloon 1 uniform, the heater 2 is preferably located at the right center of the balloon 1, so that the temperature of the water in the heating balloon 1 reaches a preset value. The heating medium in this embodiment is preferably water, although other liquids may be used as conditions warrant.
In order to prevent the catheter from scalding normal tissues due to high temperature in an operation, a circulating cooling pipeline is further arranged in the flexible pipe body to cool the catheter. The circulating cooling pipeline is shown in figures 1-4 and comprises a cooling liquid inlet channel 4, a cooling liquid outlet channel 4-1 and a cooling liquid inlet and outlet exchange channel 4-2. The cooling medium in this embodiment is preferably water, although other liquids may be used as the conditions warrant.
The embodiment can be further modified as follows: 1) the balloon 1 can be made of a compliant balloon, such as latex and silica gel, aiming at the focus with irregular shape; for stenosis, a non-compliant balloon may be selected, for example, PA, Pebax, PET, etc. To prevent rupture of the balloon 1 during thermal ablation, a multi-layer design, preferably two layers, may be used.
2) The temperature acquisition sensor is arranged in the saccule, so that the temperature of the heating medium in the saccule can be monitored, and the ablation temperature during operation can be monitored. Still be equipped with temperature measurement passageway 6 in the flexible body 3, supply the transmission line to pass through in the temperature measurement passageway 6 to be connected with temperature acquisition sensor, gather the temperature of heating medium in the sacculus 1, carry out real time monitoring to it.
3) The developing ring 8 is further arranged in the balloon 1, and the developing ring 8 can be developed under X-rays, so that the position of the balloon 1 can be indicated, and the medical imaging equipment can accurately reach a specified position under development.
Example two
The embodiment relates to a balloon ablation system, which adopts the balloon ablation system of the balloon ablation catheter in the embodiment I and further comprises a main control unit and a liquid conveying unit. The liquid conveying unit is used for conveying a heating medium into the balloon through the heating pipeline, so that the balloon is elastically deformed and is tightly attached to a focus, and the focus is ablated by using the heated balloon. The heater is used for heating the heating medium so that the temperature of the heating medium in the balloon reaches a preset value; the main control unit is used for controlling and executing a preset lesion ablation program. Lesion ablation procedures are prior art and reference may be made to relevant literature.
The embodiment can be further modified as follows: 1) the temperature acquisition sensor connected with the main control unit is arranged in the balloon, and the main control unit is used for monitoring the temperature data acquired by the temperature acquisition sensor in real time and controlling the energy output of the heater according to the temperature data so as to control the temperature of the heating medium in the balloon. When in implementation, a temperature measuring channel for a data line to pass through is arranged in the flexible pipe body, the data line is connected with a temperature acquisition sensor arranged in the saccule, and the temperature of a heating medium in the saccule 1 is acquired, so that the temperature in the saccule is monitored in real time.
On the basis, the main control unit can control the heater to adopt a constant power output mode, or control the heater to adopt a constant temperature control mode according to the feedback of the temperature acquisition sensor. Generally, in the initial stage of ablation, a constant power output mode is adopted, and when the temperature reaches a preset value, a constant temperature control mode is adopted for heat preservation, so that the condition that the normal tissues of a human body are scalded due to overhigh temperature is prevented.
2) In order to prevent the catheter from scalding normal tissues due to high temperature during operation, a circulating cooling pipeline is further arranged in the flexible pipe body, and the liquid conveying unit is further used for conveying a cooling medium to the circulating cooling pipeline to cool the flexible pipe body, so that the normal cavity is prevented from being scalded when thermal ablation is performed
3) The liquid delivery unit further includes a pressure sensor for detecting a hydraulic pressure of the heating line.
With water as the heating medium and the cooling medium, the method of use of the present embodiment can be referred to as follows:
the saccule is sent to the focus position by using the guide wire 5 under ultrasonic development, then the guide wire 5 is drawn out, and the heater 2 is placed in the flexible pipe body 3 under ultrasonic development, and is preferably positioned at the right center of the saccule 1.
Water is conveyed into the sacculus 1 through the heating pipeline 7 by a liquid conveying unit (such as a syringe and the like), and the water filling is stopped when the sacculus 1 meets the requirement of elastic deformation.
And starting the liquid conveying unit to enable cooling water to flow into the cooling liquid inlet channel 4, pass through the cooling liquid outlet exchange channel 4-2 and flow out of the cooling liquid outlet channel 4-1 to cool the flexible pipe body 3.
The main control unit controls the heater to output energy to heat the temperature of water in the balloon 1, receives temperature data acquired by the temperature acquisition sensor 6-1, and controls the heater to output energy intermittently so that the water is kept in a set threshold range (namely a preset value);
and (3) pumping water in the saccule out of the liquid filling channel 7 by using a syringe, reducing the volume of the saccule 1 to control the saccule 1 to retract quickly, and pumping the flexible pipe body 3 out of the cavity of the patient after the saccule 1 retracts.
The present invention is not limited to the specific technical solutions described in the above embodiments, and other embodiments may be made in the present invention in addition to the above embodiments. It will be understood by those skilled in the art that various changes, substitutions of equivalents, and alterations can be made without departing from the spirit and scope of the invention.

Claims (10)

1. A balloon ablation catheter characterized by: the heating device comprises a flexible pipe body, a balloon and a heater, wherein a heating pipeline is arranged in the flexible pipe body, the balloon is sleeved at the front end of the flexible pipe body, and the heating pipeline is communicated with the balloon;
the heater is arranged in the heating pipeline of the flexible pipe body;
the balloon generates elastic deformation through the pressure of the heating medium conveyed by the heating pipeline, and the radiation range is controlled according to the elastic deformation of the balloon.
2. The balloon ablation catheter of claim 1, wherein: and a circulating cooling pipeline is also arranged in the flexible pipe body.
3. The balloon ablation catheter of claim 1, wherein: a temperature acquisition sensor is arranged in the saccule.
4. The balloon ablation catheter of claim 1, wherein: and a developing ring capable of developing under X-ray is also arranged in the balloon.
5. The balloon ablation catheter according to any one of claims 1-4 wherein: the balloon is a compliant balloon or a non-compliant balloon.
6. A balloon ablation system employing the balloon ablation catheter of claim 1, wherein: the device also comprises a main control unit and a liquid conveying unit; the liquid conveying unit is used for conveying a heating medium into the balloon through a heating pipeline so as to enable the balloon to generate elastic deformation; the heater is used for heating the heating medium so that the temperature of the heating medium in the balloon reaches a preset value; the main control unit is used for controlling and executing a preset lesion ablation program.
7. The balloon ablation system of claim 6, wherein: the temperature acquisition sensor connected with the main control unit is arranged in the balloon, and the main control unit is used for monitoring the temperature data acquired by the temperature acquisition sensor in real time and controlling the energy output of the heater according to the temperature data so as to control the temperature of the heating medium in the balloon.
8. The balloon ablation system of claim 6, wherein: and the liquid conveying unit is also used for conveying a cooling medium to the circulating cooling pipeline to cool the flexible pipe body.
9. The balloon ablation system of claim 7, wherein: the main control unit can control the heater to adopt a constant power output mode, or control the heater to adopt a constant temperature control mode according to the feedback of the temperature acquisition sensor.
10. The balloon ablation system of claim 6, wherein: the liquid delivery unit further includes a pressure sensor for detecting a hydraulic pressure of the heating line.
CN202110874754.XA 2021-07-30 2021-07-30 Balloon ablation catheter and ablation system adopting same Pending CN113558748A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110874754.XA CN113558748A (en) 2021-07-30 2021-07-30 Balloon ablation catheter and ablation system adopting same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110874754.XA CN113558748A (en) 2021-07-30 2021-07-30 Balloon ablation catheter and ablation system adopting same

Publications (1)

Publication Number Publication Date
CN113558748A true CN113558748A (en) 2021-10-29

Family

ID=78169661

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110874754.XA Pending CN113558748A (en) 2021-07-30 2021-07-30 Balloon ablation catheter and ablation system adopting same

Country Status (1)

Country Link
CN (1) CN113558748A (en)

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Effective date of registration: 20230403

Address after: Building 03, accelerator phase II, No. 11, Yaogu Avenue, Jiangbei new district, Nanjing, Jiangsu Province

Applicant after: CANYON MEDICAL Inc.

Applicant after: BEIJING Hospital

Address before: Building 03, accelerator phase II, No. 11, Yaogu Avenue, Jiangbei new district, Nanjing, Jiangsu Province

Applicant before: CANYON MEDICAL Inc.