Internally pressurized medical devices

摘要

There are provided pressurized surgical instruments for use in pressurized surgical environments. The pressurized surgical instruments include pressurizing systems for maintaining a neutral or positive pressure flow within the surgical instrument during use. The pressurizing systems include a primary sensor for detecting the pressure of the surgical environment and a pressurizing mechanism for balancing the pressure of the surgical instrument with the surgical environment. The pressurizing mechanism includes a controller to receive and compare the signal sent from the primary sensor to the ambient or internal instrument pressure and a pressure delivery system to provide positive pressure to the interior of the surgical instrument in response to a signal received from the controller. The sources of pressure for the pressure delivery systems may be external or self contained within the surgical instrument.

主权项

1. A pressurized surgical instrument comprising:
a surgical instrument having a body portion and an elongate tubular member extending from the body portion, the elongate tubular member defining an interior; a primary sensor positioned within the surgical instrument for detecting a pressure in a working environment, the working environment surrounding the elongate tubular member; and a pressurization mechanism positioned within the body portion of the surgical instrument, the pressurization mechanism including a controller connected to the primary sensor and a pressure delivery system connected to the controller, the pressure delivery system being in fluid communication with an interior of the surgical instrument and configured to provide an insufflation fluid in response to a pressure detected by the primary sensor and to maintain a desired pressure within the interior of the elongate tubular member.