Development of Abdominal Vacuum Extractor Characterized by Portability and Constant Negative Pressure Which Applying to Battlefield / 中国医疗器械杂志

There are some problems such as difficulty of pressure control, inconvenience of use and carry, congested easily and dredged hardly in clinical application of vacuum extractor in common use. For solving the above problems, researchers have designed a new portable and pressure stabilized abdominal drainage system which was composed of integral double spherical aspirator and separated double cannula. The new apparatus has achieved good effects in drainage which is suitable for not only rescuing of abdominal trauma and war wound, but also abdominal surgery that manifested as sucking safe and effective, using easily and convenient, that was verified by testing.

Assisted delivery of high floating fetal head: a comparison of vacuum-assisted delivery with manual extraction.

Background: It is a well-established obstetric practice to use a vacuum device to assist in delivery of the fetal head at cesarean delivery. As a vacuum sauce, the hospital piped-vacuum supply is often used. However, no study has compared the safety and efficacy of vacuum-assisted delivery with the traditional manual extraction. Objective: Compare the safety and efficacy of delivery of the high floating fetal head using a soft cup vacuum extractor with the traditional manual extraction. Methods: This randomized study included 90 cases of caesarean sections with vacuum-assisted delivery using the soft cup vacuum extractor (V group) and 90 cases of caesarean sections with manual extraction of the head (M group). The hospital piped-vacuum supply was used to develop the required vacuum. Operative and postoperative maternal and neonatal data of importance were analyzed using Student t-test for continuous variables and Chi Square test for categorical variables. Results: The U-D interval (the time of entry into the uterus until the full delivery of the fetal head) was significantly prolonged (p<0.001) in M group (86.3±53.9 and 65.3±31.2 seconds, respectively). Mean blood loss in the V group was higher (576.7±182.9 mL and 504.4±204.9 mL, respectively). However, this difference was not statistically significant (p=0.306). There was no difference in the Apgar scores and resuscitation in the newborns of the two groups. Infants did not show evidence of any scalp remarks. Conclusion: The extraction of the fetal head at caesarean section with vacuum extractor was a non-traumatic and rapid method that did not need the prolonged fundal compression and thus avoid unwanted consequences.