Transvaginal ultrasonography is generally done before obtaining an endometrial biopsy as it may help in the gynecologic diagnosis, or even make the taking of a biopsy superfluous if the lining is thin. In female infertility the assessment of the lining can determine, if properly timed, that the patient ovulated, however, the same information can be obtained by a blood test of the progesterone level. ![]() In patients with suspected uterine cancer, the biopsy may discover the presence of cancer cells in the endometrium or cervix.In women with abnormal vaginal bleeding the biopsy may indicate the presence of abnormal lining such as endometrial hyperplasia or cancer. ![]() Women with chronic anovulation such as the polycystic ovary syndrome are at increased risk for endometrial problems and an endometrial biopsy may be useful to assess their lining specifically to rule out endometrial hyperplasia or cancer.There are a number of indications for obtaining an endometrial biopsy from a non-pregnant woman: The tissue subsequently undergoes a histologic evaluation which aids the physician in forming a diagnosis. The endometrial biopsy is a medical procedure that involves taking a tissue sample of the lining of the uterus. Welcome customers from all over the world to visit and consult us.Micrograph showing an endometrial biopsy with simple endometrial hyperplasia, where the gland-to-stroma ratio is preserved but the glands have an irregular shape and/or are dilated. Jiangxi ZhuoRuiHua Medical Instrument Co.,Ltd is a modern enterprise dedicated to the research and development production and sales of endoscopic minimally invasive surgical instruments.īy the end of 2020, a total of 8 products have obtained the CE mark.ZRH med passed ISO13485: 2016 quality management system certification and products are manufactured in class 100,000 clean room. Jiangxi ZhuoRuiHua Medical Instrument Co.,Ltd was established in 2018. In recent years, most biopsy forceps have adopted a rigid four-link structure, which makes the use of biopsy forceps more convenient. Therefore, once the thread of the biopsy forceps is broken, it cannot be repaired with common welding, and a metal barb will be formed. This is the mechanism by which the threaded cavity of the endoscopic biopsy forceps is formed. The molten metal fills the voids left by the removal of the holes and condenses, forming the weld.Īll of the above processes happen so quickly that welding speeds can easily reach several meters per minute. That is the keyhole of the hole and the molten metal around the hole wall move forward with the advancing speed of the guide beam. With the movement of the light beam, the hole is always in a stable flow state. The light beam of the endoscope biopsy forceps continuously enters the hole, and the material outside the hole flows continuously. Liquid flow and wall tension outside the pore walls are in dynamic equilibrium with the continuous vapor pressure inside the pore. The small hole is filled with high-temperature steam generated by the continuous evaporation of the wall material under the irradiation of the beam, the four walls of the small hole are surrounded by molten metal, and the liquid metal is surrounded by solid materials. The equilibrium temperature in the hole of the endoscope biopsy forceps is about 2500☌, and the heat is transferred from the outer wall of the high temperature hole to melt the metal around the hole. The steam-filled hole acts like a black body, absorbing almost all the energy of the incoming beam of the endoscopic biopsy forceps. ![]() The endoscopic biopsy forceps are irradiated with a sufficiently high power density laser to vaporize the material and form pores. The energy conversion mechanism is achieved through a "pinhole" structure. By controlling the laser parameters such as the width, energy, peak power and repetition frequency of the laser pulse, the workpiece is melted to form a specific molten pool. Laser radiation heats the surface to be processed, and the surface heat diffuses to the interior through thermal conduction. The endoscopic biopsy forceps are mainly connected by laser welding, and laser welding can be realized by continuous or pulsed laser beams. Endoscopic biopsy forceps are available in various types, such as round cup shape, tooth cup shape, standard type, side opening type, and tip with needle type.
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