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Multi-point monitoring catheter for temp. of urethra for ablation of prostate

A multi-point monitoring and prostate technology, applied in the field of medical devices, can solve the problems of less temperature monitoring sites, inaccurate temperature measurement, and inability to better reflect the temperature of the prostate urethra, etc., to achieve safe and effective treatment, reduce power, The effect of avoiding urethral hyperthermia injury

Inactive Publication Date: 2007-07-18
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are: the temperature sensor is located under the radio frequency electrode and cannot directly contact the urethral lining, so the temperature measurement is inaccurate; secondly, there are too few temperature monitoring sites, which cannot better reflect the temperature of the entire prostatic urethra

Method used

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  • Multi-point monitoring catheter for temp. of urethra for ablation of prostate

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Embodiment Construction

[0012] The embodiments of the present invention are described in detail below: the present embodiment is implemented under the premise of the technical solution of the present invention, and detailed implementation and specific operation process are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0013] The temperature sensor used in this embodiment is a T-type copper-constantan thermocouple with good linearity that is commonly used in the world. Copper and constantan with an outer diameter of 0.1 mm are selected as materials, and the surfaces are coated with insulating varnish to insulate each other. The copper and constantan ends are made into a hot node with a smooth surface by arc welding, with a diameter of 1 mm, a temperature measurement range of -100-200 ° C, and a response time of 1 s. Calibrate the fabricated temperature sensor for later use.

[0014] As shown in FIGS. 1 and 2 , this embodiment in...

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Abstract

A multi-point urethra temp monitoring catheter for the thermal fusion therapy of prostatic diseases is composed of a dual-cavity or three-cavity catheter, the temp sensors with head end on the surface and tail end led out from the cavity of catheter, and the thermoelectric compensating line with one end connected to the tail end of said temp sensors.

Description

technical field [0001] The invention relates to a device in the technical field of medical devices, in particular to a catheter for multi-point monitoring of urethral temperature for prostate ablation. Background technique [0002] With the prolongation of human life expectancy and continuous improvement of diagnostic techniques, the incidence of prostate cancer is on the rise. In the early days, people used transurethral radiofrequency ablation to treat prostate cancer, but because prostate cancer mostly occurs in the peripheral area, the therapeutic effect of transurethral radiofrequency ablation is not ideal. In 1997, Djavan first reported transperineal ablation of prostate cancer under the guidance of rectal ultrasound, which increased the range of radiofrequency ablation of the prostate. In recent years, the use of radiofrequency ablation in the treatment of prostate cancer has developed into a promising new approach for the treatment of solid tumors. However, due to ...

Claims

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Application Information

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IPC IPC(8): A61B5/01A61B18/12A61B19/00G01K7/00A61M25/00
Inventor 胡兵黄瑛罗昌渠
Owner SHANGHAI JIAO TONG UNIV
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