What Are Biopsy Forceps?

Biopsy forceps are an indispensable tool for taking pathological specimens for endoscopy. If a biopsy forceps is used to obtain specimens, it will lead to nosocomial infections. The author analyzes the causes of biopsy forceps and the methods of disinfection and sterilization as follows.

Biopsy forceps

This entry lacks an overview map . Supplementing related content makes the entry more complete and can be upgraded quickly. Come on!

Biopsy forceps are an indispensable tool for taking pathological specimens for endoscopy. If you use contaminated biopsy forceps to obtain specimens, it will cause nosocomial infections. The author analyzes the causes of biopsy forceps and the methods of disinfection and sterilization as follows.

Chinese name

Biopsy forceps

Biopsy forceps

Indispensable tools for examining and taking pathological specimens

To get

Specimens are handled using contaminated biopsy forceps

Will cause

Outbreak of nosocomial infection

Endoscopic biopsy forceps disinfection

1.1 Instruments and Equipment Biopsy forceps are produced and supplied by Olympus and Changzhou Jiuhong. Domestic NCX12- automatic cleaning ultrasonic atomizing endoscope disinfection machine. The glass tube is 3 cm in diameter and 100 cm in length due to the immersion biopsy forceps. 2% glutaraldehyde wendilierkang.

1.2 Disinfection methods Disinfection methods include automatic cleaning ultrasonic atomizing endoscope disinfection machine disinfection method (referred to as machine elimination method) and vertical suspension soaking disinfection method. After taking the biopsy, the biopsy forceps were first washed under water flow, and the brushes were cleaned into the sterilizer and the sterilizer was set at the same time as the endoscope. The set time was 5 minutes as required. The latter uses the same method to clean the biopsy forceps, and then immerses the biopsy forceps vertically in a glass organ container of glutaraldehyde. The disinfection time is 10 minutes. Then the same method was used to make up samples of the forceps flap and the lower end of the biopsy forceps to send the forceps culture.

1.3 Statistical method using t test, P <0.05, the difference was statistically significant.

The experimental results show that in the 6 bacterial cultures of the machine elimination method, 3 of them report full plates of bacteria, which are calculated as 2,500 bacteria 1 cm2 in statistical processing, and the other 3 times are 404, 100, and 256 bacteria 1 cm2. ; After vertical suspension soaking and disinfection after 10 bacterial cultures, no bacterial growth was seen. Statistical analysis: t = 7.5, P <0.000 5, the difference is statistically significant.

In recent years, the equipment and personnel for endoscopy and treatment have been constantly popularized, and the hospital infections caused by it have been valued. Therefore, the disinfection and sterilization of endoscopy and its accessories have been paid more and more attention. To prevent cross-infection in the hospital. The "Disinfection Technical Specifications" stipulates that biopsy forceps are endoscopic accessories that directly operate the body's mucosal tissues and need to meet sterilization standards. Scholar Xu devoted himself to the research of disinfection and sterilization of endoscope and biopsy forceps, but found no reason for incomplete disinfection of biopsy forceps, so the disinfection effect was not obvious. The use of disposable biopsy forceps can completely eliminate the possibility of cross infection.

3.1 Analysis of the cause of the biopsy forceps during the endoscopy. In order to facilitate the observation of the expansion of the gastric cavity and intestinal cavity, it is necessary to infuse the cavity with gas and increase the pressure in the cavity. . The structure of the biopsy forceps does not have a flushing hole, and the inner core is not easy to be cleaned and disinfected.

3.2 Reasons for the incomplete disinfection of the disinfection machine The automatic cleaning ultrasonic atomizing endoscope disinfection machine is equipped with an endoscope disinfection system and a biopsy forceps disinfection system. The disinfection procedure is pressure cleaningatomization disinfectionpressure cleaning. The water source and disinfectant solution are discharged immediately after use. The dirt in the sheath of the biopsy forceps cannot be used to drain the fluid out of the strategy. When the sterilizer works, it only cleans and disinfects the surface of the biopsy forceps, but it cannot disinfect the dirt hidden in the sheath, resulting in incomplete disinfection of the biopsy forceps. In the experiment, the biopsy forceps sterilized by the sterilizer were taken out and suspended vertically. After a minute, the mucus drained from the lower forceps flap of the biopsy forceps and a large number of bacteria were cultured, which further confirmed that the biopsy forceps sheath contained dirt. liquid.

3.3 Characteristics of the vertical hanging soaking method The vertical hanging soaking disinfection method is used to immerse the used biopsy forceps in a 2% valeraldehyde solution after preliminary cleaning, and the secretions entering the sheath are drained out by gravity to be disinfected. In addition, the difference in disinfection time should also be one of the reasons for the obvious difference in disinfection results, suggesting the importance of extending the disinfection time to improve the disinfection effect. Through bacterial culture observation, after 2 weeks of use of the disinfectant, the disinfection effect still reached the requirements of sterility. Therefore, the vertical suspension soaking disinfection method is currently recommended for disinfection of biopsy forceps.