Hysterosalpingography (HSG) is a procedure that is difficult to perform and can cause laceration and trauma to the external orifice of the uterus (i.e., “external OS”) or the cervix. Also, there is leakage of contrast during procedure. There are different types of disposable cannulas available for this procedure. Most of the cannulas require the use of forceps for holding the cervix which cause pain and mild bleeding.
Several devices of various configurations have been developed to perform HSG. Many of these devices have variable stiffness and use an inflated balloon like catheters. Some of catheters are difficult to insert due to flexibility of catheter. The inflated balloon occupies the endometrial cavity and may obscure diagnostic information in this area.
A vacuum uterine cannula is difficult to use and may fail to provide a leak–proof seal. A cannula made of rigid metal can cause injury to endometrial cavity. A reusable cannula is difficult to clean for re-sterilization and can transmit diseases like AIDS and hepatitis etc.
As such, a device that performs HSG with ease and creates no trauma for the patient even in the hands of inexperienced radiologists, gynecologists, or technologists would provide many advantages. Furthermore, a cannula with which it is easy to perform HSG, and which is provided for a single use and does not require holding the cervix with forceps would provide advantages such as minimizing pain and preventing bleeding. An additional advantage would be available if the cannula can provide a tight seal with the cervix to avoid reflux of contrast.
Therefore, a single use cannula has developed that is configured to perform multiple procedures and performs HSG with ease and creates no trauma for the patient.