Transsphenoidal pituitary tumor locating device based on ultrasonic blood flow detection guidance

A positioning device and pituitary tumor technology, applied in the field of medical equipment, can solve problems such as difficult reproduction of audio speakers and beyond the range of hearing discrimination of doctors, and achieve the effects of improving accuracy, reducing accidental injuries, and overcoming dependence

Active Publication Date: 2019-10-01
ZHEJIANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The frequency of ultrasound during minimally invasive surgery is very high, sometimes up to 20MHz, and the resulting excessive Doppler frequency shift may make it difficult for the audio speaker to reproduce it, beyond the hearing range of the doctor

Method used

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  • Transsphenoidal pituitary tumor locating device based on ultrasonic blood flow detection guidance
  • Transsphenoidal pituitary tumor locating device based on ultrasonic blood flow detection guidance
  • Transsphenoidal pituitary tumor locating device based on ultrasonic blood flow detection guidance

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Embodiment Construction

[0020] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0021] figure 1 The structural block diagram of the ultrasonic blood flow detection system during transsphenoidal pituitary tumor resection is given, including an ultrasonic Doppler transducer 1 and an ultrasonic host 2, wherein the ultrasonic Doppler transducer 1 is composed of a piezoelectric unit 10 , a transmitting amplifier 11 and a receiving amplifier 12, and the ultrasonic host 2 is composed of a transmitting / receiving circuit module 21, a central processing unit 22 and an image display module 23. The transmitting / receiving circuit module 21 is composed of a frequency oscillator 211 and time delay units 212 and 213 .

[0022] Such as figure 2 As shown, the ultrasonic Doppler transducer piezoelectric unit 10 in this embodiment includes several piezoelectric chip array elements 101 that are regularly distribute...

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Abstract

The invention relates to a transsphenoidal pituitary tumor locating device based on ultrasonic blood flow detection guidance. The device consists of a phased array ultrasonic Doppler transducer and anultrasonic main machine, wherein the ultrasonic main machine comprises a central control processing unit, a transmitting/receiving circuit module and a graphic display module, and the ultrasonic Doppler transducer comprises a piezoelectric unit, a transmitting amplifier and a receiving amplifier. The device adopts a phased array technology for carrying out different time delay processing on signals input and output by an array in the transducer. By calculating and obtaining information such as the tissue distance, the blood vessel depth and the Doppler frequency shift amount at the detectionposition and displaying the information in the form of images, the transducer does not need to be rotated mechanically, the blood vessel detection efficiency is improved, and accidental injuries possibly caused in an operation process are avoided.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a transsphenoidal pituitary tumor positioning device based on ultrasonic blood flow detection and guidance. Background technique [0002] Pituitary tumor is a common neurosurgical benign intracranial tumor, second only to neuroepithelial tumors and meningiomas in intracranial tumors, accounting for about 10% of all intracranial tumors. The treatment of pituitary tumors mainly includes surgery, radiation therapy and drug therapy. Although radiation therapy can achieve certain curative effect, drug therapy is only used as an adjunct to surgery and radiotherapy due to the relatively large side effects of radiation therapy. At present, the treatment of pituitary tumors is still mainly surgery, supplemented by drug therapy and radiation therapy. [0003] With the development of minimally invasive techniques, transsphenoidal resection has become the most commonly used minimally invasiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B8/12A61B8/06A61B8/08A61B8/00A61B90/00
CPCA61B8/06A61B8/085A61B8/12A61B8/4455A61B8/4483A61B8/4488A61B8/488A61B90/37A61B2090/3784
Inventor 郑音飞姚磊闫伟吴德林高申平李超
Owner ZHEJIANG UNIV
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