Cryoablation system with multiple safety detection and prevention device

A safety detection and multiple technology, applied in the direction of cooling surgical instruments, parts of surgical instruments, medical science, etc., can solve the problems of affecting performance, increasing the outer diameter of catheters, and lagging detection response

Pending Publication Date: 2020-03-17
CRYOFOCUS MEDTECH (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fluid leakage detected by this method Inevitably, fluid (typically patient blood) will enter the catheter, thereby affecting the health of the patient
In addition, since the photoelectric sensor needs to set the transmitter and receiver in the catheter, it will inevitably increase the outer diameter of the catheter, and then there is a problem that it cannot adapt to some blood vessels
Third, the sensor needs power supply lines and signal lines, and at least four wires need to be installed in the catheter. Adding four wires in the narrow space of the catheter is likely to affect its performance
[0004] For the second safety risk, the existing detection system generally judges whether the gas circuit of the conduit is blocked by detecting the intake pressure or flow rate. However, the detection by this method has the defect of detection reaction lag. The risk of overpressure will occur in the balloon of the refrigeration unit within two seconds, and the gas circuit is generally blocked for 2-3 seconds or even longer before it can be effectively detected and the gas source is turned off, posing obvious safety hazards

Method used

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  • Cryoablation system with multiple safety detection and prevention device
  • Cryoablation system with multiple safety detection and prevention device
  • Cryoablation system with multiple safety detection and prevention device

Examples

Experimental program
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Effect test

Embodiment 1

[0058] Such as Figure 1 to Figure 8 As shown, a cryoablation system with multiple safety detection and prevention devices is composed of a cryoablation device 1 and a cryoablation catheter 2. The cryoablation device includes a human-computer interaction module 11, a control module 12, and an air circuit module 13. The human-computer interaction module 11 is electrically connected to the control module 12, and the control module 12 is electrically connected to the gas circuit module 13. The cryoablation catheter 2 includes a catheter elongated shaft 23, and the catheter is elongated. The catheter handle 22 arranged at the proximal end of the shaft 23, the freezing unit 24 arranged at the far end of the catheter elongated shaft 23, the air inlet pipe 25 and the air return pipe 26 arranged in the catheter elongated shaft 23, the inlet pipe The air pipe 25 and the air return pipe 26 are in fluid communication with the inner cavity of the refrigeration unit 24, and a liquid blocki...

Embodiment 2

[0083] The difference between this embodiment and the first embodiment is that a guide wire lumen 27, a thermocouple 3 and a safety device 4 are arranged in the cryoablation catheter 2. Such as figure 1 and figure 2 As shown, a cryoablation system with multiple safety detection and prevention devices is composed of a cryoablation device 1 and a cryoablation catheter 2. The cryoablation device includes a human-computer interaction module 11, a control module 12, and an air circuit module 13. The human-computer interaction module 11 is electrically connected to the control module 12, and the control module 12 is electrically connected to the gas circuit module 13. The cryoablation catheter 2 includes a catheter elongated shaft 23, and the catheter is elongated. The catheter handle 22 arranged at the proximal end of the shaft 23, the freezing unit 24 arranged at the distal end of the catheter elongated shaft 23, the air inlet tube 25, the air return tube 26 and the guide wire l...

Embodiment 3

[0092] The difference between this embodiment and the second embodiment lies in that the structure of the safety device 4 is different. Such as Figure 11 and Figure 12 As shown, the safety device 4 is the openings 43 and 44 respectively arranged on the distal parts of the positive lead 31 and the negative lead 32, and the openings 43 and 44 are arranged in the liquid blocking mechanism 28 The openings 43 and 44 expose the conductive metal wires in the positive lead 31 and the negative lead 32, and the exposed conductive metal wires in the positive lead 31 and the negative lead 32 are not directly touch.

[0093] In one embodiment, the cryoablation device is provided with a catheter connection end 5, one end of the catheter connection end 5 is fixedly connected to the gas circuit module 13, and the other end of the catheter connection end 5 is connected through a flexible connection. The tube 21 is connected to the catheter handle 22, the air inlet pipe 25, the air return ...

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Abstract

The invention relates to a cryoablation system with a multiple safety detection and prevention device. The system consists of cryoablation equipment and a cryoablation catheter, the cryoablation equipment comprises a human-computer interaction module, a control module and a gas circuit module, the man-machine interaction module is electrically connected with the control module; the control moduleis electrically connected with the gas circuit module; the gas circuit module is connected with the cryoablation catheter; the cryoablation catheter comprises a catheter slender shaft, wherein a catheter handle is arranged at the near end of the catheter slender shaft, a freezing unit is arranged at the far end of the catheter slender shaft, and an air inlet pipe and an air return pipe are arranged in a cavity of the catheter slender shaft. The air inlet pipe and the air return pipe are in fluid communication with an inner cavity of the freezing unit, a liquid plugging mechanism is arranged inthe far end of the catheter slender shaft, and the liquid plugging mechanism is provided with a hydrophobic micropore structure.

Description

technical field [0001] The application belongs to the field of minimally invasive interventional therapy, and specifically relates to a cryoablation system with multiple safety detection and prevention devices. Background technique [0002] Cryoablation is a new technology for the treatment of cardiac arrhythmias. The principle is to take away the tissue heat through the heat absorption and evaporation of the liquid refrigerant, lower the temperature of the target ablation site, and destroy the abnormal cells and tissues, so as to achieve the purpose of treatment. The catheters used in cryoablation need to go inside the human body and go deep into the lesion. Any cryoablation system has certain safety risks, how to effectively detect and prevent related risks is the main problem to be solved in this field. For the cryoablation process, there are two main safety risks: first, the catheter is damaged, causing human blood to enter the catheter and causing partial blood loss i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/02
CPCA61B18/02A61B2018/00351A61B2018/00773A61B2018/00791A61B2018/0212
Inventor 赵奎文刁月鹏陈熙黄勇
Owner CRYOFOCUS MEDTECH (SHANGHAI) CO LTD
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