A single cavity variable diameter oocyte harvester

Abstract

The invention discloses a single-chamber variable-diameter oocyte collector, which comprises sequentially connected puncture needles, handles, catheter sleeves, suction catheters and silica gel plugs. The protective sheath, the puncture needle includes a needle tube and a needle point connected to it, and an ultrasound imaging enhancement band group is arranged on the outer wall of the needle tube; the needle tube adopts a needle tube with a thinner front section and a thicker rear section; the ultrasound imaging enhancement belt group includes several ultrasound imaging enhancement belts , a number of ultrasonic development enhancement bands are distributed on the outer wall of the needle tube at equal intervals along the axial direction of the needle tube; each of the ultrasonic development enhancement bands is composed of a linear groove set along the axial direction of the needle tube constitute. The single-chamber variable-diameter oocyte collector of the present invention makes the ultrasonic imaging of the puncture needle present alternate light and dark scales, making it easy for the operator to directly observe the needle insertion depth in real time on the display screen of the ultrasonic imaging system during the operation, making the operation more convenient. precise.

Description

technical field [0001] The invention relates to a single-cavity variable-diameter oocyte collector, which is used for human assisted reproductive technology (ART) ultrasound imaging-guided oocyte retrieval, and belongs to the field of medical devices. Background technique [0002] In the medical field, guided by ultrasound images, puncture is used to puncture the target site to collect body fluids, tissues, cells or introduce medicinal liquid. During the operation, the doctor places the ultrasound probe on the site to be punctured or on the body surface of the site to be punctured, and inserts the needle from the side of the probe. On the display screen of the imaging system, the tissue structure, needle and needle tip can be seen, so as to accurately grasp the puncture needle to reach the target position. In the actual operation process, since the outer wall of the puncture needle is smooth, it produces mirror reflection to the incident sound wave, and the smaller the angl...

AI Technical Summary

Problems solved by technology

Although, in a puncture needle disclosed in patent 200610066108.6, a sharper ultrasonic imaging can be obtained up to the tip end of the puncture needle. Concave machining of the needle periphery will result in less clear ultrasound visualization up to the end of the needle tip, reducing the effectiveness of this method

[0013] In addition, during the egg retrieval operation, especially when the puncture is in progress, the operator often needs to move his sight from the display screen to the puncture needle, and confirm the depth of the needle by observing the puncture needle on his hand, which is very inconvenient for the doctor to operate. It also affects the accuracy of the operation

It is well known that the effective length of the puncture needle used in the egg retrieval operation is relatively long, about 30cm to 35cm. Even if the ultrasound imaging of the needle head of the puncture needle in the existing technical solution is clearly identifiable, it is difficult to develop the other parts of the puncture needle without special treatment. Doctors cannot directly observe the depth of needle insertion on the display screen in real time, which also reduces the accuracy of surgical operations

Images