Cutting blade for vessel sealer with knife return

An electrosurgical forceps, comprising:

• a pair of jaw members movable from a first position in spaced relation relative to one another to at least one subsequent position wherein the jaw members cooperate to grasp tissue in a gap therebetween;
• each of the jaw members including an electrically conductive sealing plate adapted to connect to an energy source and configured to communicate energy through tissue held therebetween;
• and
• at least one of the jaw members having a blade channel defined therein configured to house a cutting mechanism therein, the cutting mechanism including:
• a blade having a series of camming slots defined along a length thereof, the blade including at least one blade spring operably associated therewith configured to bias the blade to a recessed position within the blade channel;
• and
• a blade cam disposed in general vertical registration with the blade, the blade cam including a series of camming surfaces configured to operably engage the corresponding series of camming slots of the blade, the blade cam including a proximal end operably coupled to an actuation rod configured to move the blade cam upon proximal movement thereof;
• wherein, actuation of the actuation rod moves the camming surfaces of the blade cam into engagement against the camming slots forcing the blade into the gap between the jaw members in a vertical direction away from the actuation rod and engaging the at least one blade spring against an underside of the electrically conductive sealing plate of the at least one jaw member to cut tissue disposed between the jaw members and wherein, upon release of the actuation rod, the bias of the at least one blade spring returns the blade to the recessed position within the blade channel.

A forceps, comprising:

• a pair of jaw members movable from a first position in spaced relation relative to one another to at least one subsequent position wherein the jaw members cooperate to grasp tissue in a gap therebetween;
• at least one of the jaw members having a blade channel defined therein configured to house a cutting mechanism therein, the cutting mechanism including:
• a blade having a series of camming slots defined along a length thereof, the blade including at least one pair of blade springs disposed on either side thereof that are each configured to engage the underside of the tissue engaging surface of the at least one jaw member upon actuation of the actuation rod to bias the blade to a recessed position within the blade channel;
• and
• a blade cam disposed in general vertical registration with the blade, the blade cam including a series of camming surfaces configured to operably engage the corresponding series of camming slots of the blade, the blade cam including a proximal end operably coupled to an actuation rod configured to move the blade cam upon proximal movement thereof;
• wherein, actuation of the actuation rod moves the camming surfaces of the blade cam into engagement against the camming slots forcing the blade into the gap between the jaw members in a vertical direction away from the actuation rod and against the bias of the at least one pair of blade springs to cut tissue therebetween.