Surgical device for performing colpotomy on patient

A colpotomy device, comprising:

• an elongated shaft having a proximal end and a distal end;
• a handle assembly comprising a handle body mechanically coupled to the proximal end of the elongated shaft, and a mechanical deployment actuator having a deployment mechanism slidably disposed on the handle body and a brake that are circumferentially spaced apart from each other and are configured for rotating, in unison, with the handle body about a longitudinal axis of the elongate shaft;
• a cutting head mechanically coupled to the distal end of the elongated shaft, the cutting head configured for being positioned at the distal end of a vaginal cavity of a patient, the cutting head comprising:
• a colpotomy cup;
• and
• a cutting element slidably coupled to the colpotomy cup, such that the cutting element is configured for being distally advanced from a stored position, wherein a distal portion of the cutting element is housed within the colpotomy cup, to a deployed position, wherein the distal portion of the cutting element extends distally from the colpotomy cup;
• and
• a sleeve slidably disposed around the elongated shaft between the colpotomy cup and the handle assembly, wherein a proximal portion of the cutting element is affixed to a distal portion of the sleeve and the deployment mechanism and the brake are mechanically coupled to a proximal portion of the sleeve, such that when the deployment mechanism is slid in the distal direction relative to the handle body, the sleeve slides distally relative to the elongated shaft, thereby distally advancing the cutting element from the stored position to the deployed position, and the brake slides relative to the handle body in the distal direction to releasably lock the cutting element in a position between the stored position and the deployed position.