A finger-splinting sheath device is provided for use as a self-treatment aid in assisting a bowel in a patient suffering from complications of pelvic organ prolapse, namely rectocele. The finger-splinting sheath device generally includes a monolithic molded body including a flange-element, and a sheath-element having a proximal end and a distal end, wherein the sheath-element is coupled to the flange-element at the proximal end and is closed at the distal end. The sheath-element generally includes an elliptical cross-section configured to receive two-fingers therein, wherein the sheath-element functions to splint the two fingers during use. A method for using the device includes inserting the device with two fingers within the sheath-element into the vagina and applying pressure to the vaginal walls to assist a bowel movement.
