An apparatus includes an interface assembly and a shaft assembly. The interface assembly is for use with a robotic system and includes a first drive assembly. The first drive assembly includes a first slot having a distal recess and a transverse recess. The shaft assembly is removably couplable with the interface assembly and includes an end effector and a first coupling feature. The first drive assembly of the interface assembly actuates the end effector of the shaft assembly. The first coupling feature is couplable with the first slot of the first drive assembly to longitudinally fix the shaft assembly relative to the interface assembly.

A lever latching system comprising: a housing; a lever having a latch pin fixedly mounted to the lever, the lever being movably mounted to the housing so that the latch pin moves in an arc; and a latch plate movably mounted to the housing for linear movement with respect to the housing, the latch plate comprising a labyrinth for receiving the latch pin.

A forceps having at least a first jaw with a longitudinal axis is disclosed. The first jaw can include a body portion, a first flange, a second flange and a cam pin. The first flange can define a first cam slot with a longitudinal extent along the longitudinal axis. The second flange can be spaced from the first flange a distance transverse to the longitudinal axis of the first jaw and can have a second cam slot. The cam pin, with a longitudinal axis, can be moveably secured within the first cam slot and the second cam slot. A diameter of the cam pin can be less than a width between a first longitudinal edge that defines a first side of each of the first cam slot and the second cam slot and a second longitudinal edge that defines a second opposing side of each of the first cam slot and the second cam slot so that the cam pin is moveably received by both the first cam slot and the second cam slot. With the first jaw pivoted to at least a first position, the cam pin and first flange can be configured such that the first longitudinal edge is contacted by the cam pin but the second longitudinal edge is spaced from the cam pin. The cam pin and second flange can be configured such that the first longitudinal edge is spaced from the cam pin but the second longitudinal edge is contacted by the cam pin.

A medical instrument includes two jaw members, at least one of which creates conditions of frustrated total internal reflection at a tissue-contacting surface when tissue is grasped between the two jaw members. The first jaw member may include an optical element having a tissue-contacting surface. The medical instrument also includes a light source that provides a light beam for sealing tissue. The light source is positioned so that the light beam is totally internally reflected from an interface between the tissue-contacting surface and air when tissue is not grasped by the jaw members. When tissue is grasped by the jaw members, at least a portion of the light beam is transmitted through that portion of the tissue-contacting surface that is in contact with the tissue. The light source may be movably coupled to a jaw member to scan the light beam and/or to change the incident angle based on optical properties of the tissue.

The present disclosure relates to a surgical electrode assembly comprising: an electrode device comprising electrodes; a manipulating device; an electrode driving device configured to drive the electrodes, the manipulating device comprising an actuation mechanism; an inner tube having an inner tube proximal portion at a proximal end thereof, an inner tube distal portion at a distal end thereof, and an inner tube bending portion therebetween, the inner tube bending portion having a curvature, such that the inner tube distal portion and the inner tube proximal portion are disposed at an angle to each other; an outer tube having an outer tube proximal portion at a proximal end thereof and an outer tube distal portion at a distal end thereof, and an outer tube connecting portion therebetween, wherein the outer tube connecting portion is adapted to the inner tube bending portion, such that when manipulating the manipulating device to cause the inner tube and the outer tube to move relative to each other, the outer tube connecting portion allows the inner tube bending portion of the inner tube and the outer tube to move relative to each other in the longitudinal direction without interfering of the inner tube bending portion of the inner tube with the outer tube proximal portion and the outer tube distal portion of the outer tube. The technical effect lies in that bending tubes are provided which can greatly improve the convenience of the surgical electrode assembly entering a human body channel, and the electrode assembly may not interfere with the instrument used in conjunction therewith.

A surgical instrument comprises first and second jaws movable relative to each other between open and closed positions, a cutting electrode with a cutting surface for tissue dissection and at least one sealing electrode for sealing or coagulating tissue. The cutting electrode includes one or more insulation layers for securing the cutting electrode to one of the jaws and for protecting the jaws from the heat and energy generated at the cutting surface during operation. An actuator mechanism is coupled to the first and second jaws for moving the jaws between the open and closed positions. At least one portion of the actuator mechanism comprises a conductive pathway for electrically coupling the cutting and/or sealing electrode(s) to a source of energy. Thus, the mechanical components of the actuator mechanism include electrically conductive pathways to reduce the number of conductors extending through the device, thereby providing a more compact and maneuverable instrument.

A surgical instrument includes an end effector with opposing jaws that open and close relative to each other. The jaws each include a cam slot for receiving a cam pin. Translation of the pin through the cam slots opens and closes the jaws. The cam slots are shaped such that at least one of the jaws applies a grip force that is substantially proportional to a force applied to the pin to translate the pin through at least a portion of the slots (i.e., the ratio between force input and the resulting force output remains substantially the same as the pin travels through at least one portion of the slots). This design provides a constant mechanical advantage between the force applied to the pin and the force applied by the jaws, thereby allowing a user to more easily regulate the forces applied to tissue held by the jaws.

A medical instrument includes two jaw members, at least one of which creates conditions of frustrated total internal reflection at a tissue-contacting surface when tissue is grasped between the two jaw members. The first jaw member may include an optical element having a tissue-contacting surface. The medical instrument also includes a light source that provides a light beam for sealing tissue. The light source is positioned so that the light beam is totally internally reflected from an interface between the tissue-contacting surface and air when tissue is not grasped by the jaw members. When tissue is grasped by the jaw members, at least a portion of the light beam is transmitted through that portion of the tissue-contacting surface that is in contact with the tissue. The light source may be movably coupled to a jaw member to scan the light beam and/or to change the incident angle based on optical properties of the tissue.

An endoscopic forceps is provided and includes a housing having a shaft that extends therefrom. An end effector assembly is operatively connected to a distal end of the shaft and includes a pair of pivotably coupled first and second jaw members. The jaw members are movable relative to one another. A drive mechanism includes a driving structure. A link assembly includes two or more links that are operably coupled to each other and the drive structure. The two or more links are operably coupled to respective ones of the first and second jaw members.

A medical device can include a working end comprising a jaw mechanism configured to perform a clamping function and a translating cutting mechanism configured to perform a cutting function in response to translating movement of the translating cutting mechanism. The medical device can further include at least two user-actuated input mechanisms, and a computer processor operably coupled to the working end and to the at least two user-actuated control input mechanisms. In an operational state, the computer processor commands a movement of the translating cutting mechanism through a first range of motion in response to a first command received from actuation of a first of the at least two user-actuated control input mechanisms, and commands a movement of the translating cutting mechanism through a second range of motion in response to at least a second command received from actuation of at least a second of the at least two user-actuated control input mechanisms, the second range of motion being different from the first range of motion.