Disclosed is a four-jawed combinational scissor-grasper surgical tool for use in laparoscopy, Cutting and grasping functionalities are respectively enabled via movement of a pair of such specially contoured jaw members sliding against or splaying apart from the other pair. Also disclosed are means for achieving selectable interlocking of jaw members and mechanical linkage for their actuation by human user.

A robotic surgical instrument comprising a shaft and end effector element connected by an articulation. The articulation comprises a first joint driveable by a first pair of driving elements. The first joint permits the end effector element to rotate about a first axis transverse to a longitudinal axis of the shaft, the rotation of the end effector element about the first axis bounded by an extreme rotation angle relative to the longitudinal axis. A second joint is driveable by a second pair of driving elements. A pulley arrangement constrains the second pair of driving elements, and comprises a first set of pulleys rotatable about the first axis, and a second set of pulleys located relative to the first set of pulleys such that at the extreme rotation angle the second pair of driving elements is retained in contact with both the first and second sets of pulleys.

A clip device includes a restraining tube having an insertion passage with a first arm part and a second arm part facing each other and disposed within the insertion passage and configured to protrude from the restraining tube. The clip device further includes an operation wire configured to move the first arm part. A first stopper is engaged to the first arm part and a second stopper is engaged to the second arm part. The first stopper is disposed in a region closer to a distal end of the restraining tube than the second stopper. The first stopper is configured to, in response to the operation wire moving from the distal end of the restraining tube to a proximal end of the restraining tube, move relative to the second stopper, contact the second stopper, and move in contact with the second stopper.

A surgical instrument includes a housing supporting first and second actuators thereon, and an elongated shaft extending distally from the housing. First and second drive members extend through the elongated shaft to operatively couple respective actuators to respective jaw members such that independent manipulation of one of the actuators may induce pivotal movement of an individual jaw member. A locking member is operatively associated with the first and second drive members, and is selectively movable between locked and unlocked positions. When the locking member is in the locked position, the first and second drive members are coupled to one another and move concurrently to drive the jaw members in a bilateral manner. When the locking member is in the unlocked position, the drive members are decoupled from one another and move independently to permit operation of the instrument in a unilateral manner.

A medical instrument comprises a housing and an elongated sheath configured to be attached to the housing. The elongated sheath includes opposed distal end and proximal end along a longitudinal axis. An end effector is configured to be attached to the distal end of the elongated sheath. The end effector includes a pair of grasps. A direction changer is used to change a direction of the end effector with respect to the distal end of the elongated sheath. A first drive shaft movable in the elongated sheath in ganged relation for opening and closing movement of the pair of grasps. A second drive shaft movable in the elongated sheath in ganged relation for angular movement of the end effector by the direction changer with respect to the elongated sheath. An operating member is configured to actuate the second drive shaft between a bent positions and a neutral position.

The invention relates to a surgical device for minimally invasive surgery. The surgical device comprises a shaft (10) extending along a longitudinal axis to a distal end thereof, and a surgical module (3) mounted to the distal end of the shaft and provided with a movable surgical element. The shaft includes a tube (7) that is rotatable relative to the shaft (10) and a further tube (5). The shaft further includes at least one slider (15A,B) connected to the surgical module and operatively driven by the rotatable tube via a rotary to linear linkage such that a rotation of the rotatable tube around the longitudinal axis induces a movement of the slider along the longitudinal axis thereby inducing a movement of the movable surgical element. The further tube is coaxial with the rotatable tube and rotationally stationary relative to the shaft. Further, the at least one slider is rotationally locked relative to the stationary tube.

This invention is directed to a medical device having a longitudinal axis, and including a handle and a catheter. The handle can include a body having a proximal end and a distal end, an actuator moveably coupled to the body, and a handle control member coupled to the actuator, wherein the actuator can be configured to move relative to the body to move the handle control member. The catheter can include a shaft having a proximal end and a distal end, wherein the proximal end of the shaft and the distal end of the body can be configured for releasable coupling. The catheter can also include a steering section located along the shaft and a catheter control member coupled to the steering section, wherein the catheter control member can be configured to move relative to the shaft to move the steering section relative to the longitudinal axis. The medical device can also include a securing member configured to move relative to at least one of the handle and the catheter to releasably couple the handle control member to the catheter control member.

A drive unit according to an embodiment may include: a first gear that rotates about a first axis; a second gear that rotates about a second axis extending in a direction perpendicular to the first axis; and a third gear that rotates about a third axis extending in a direction perpendicular to the first axis. Elongated elements in a shaft to operate a distal end part attached to the shaft include: a rigid first elongated element meshing with the second gear; and a rigid second elongated element meshing with the third gear. The second and third gears mesh with the first gear. The distal end part is operated in such a manner that as the first gear rotates, the first elongated element moves in a longitudinal direction of the shaft while the second elongated element moves in a direction opposite to the direction in which the first elongated element moves.

An instrument, a medical-endoscopic instrument or technoscope, includes a shank (2) and an instrument head (10), which is arranged at a distal shank end of the shank (2) and is bendable relative thereto via a joint. The instrument head (10) includes a tool with two jaw parts (20, 22) which are pivotable relative to one another and are coupled in each case to two pull cables (70, 72, 76), for the control of the jaw parts (20, 22). These pull cables (70, 72, 76), in the region of the joint, are guided around two deflecting rollers (78, 80, 82, 84, 86, 88, 90, 92). Deflecting roller pairs are arranged on both sides of a middle axis (A) of the instrument. Deflecting rollers (82, 84, 90, 92) of a first deflecting roller pair have a smaller diameter than deflecting rollers (78, 80, 86, 88) of a second deflecting roller pair.

A medical device includes a link, a first tool member, a second tool member and a third tool member, which each have a proximal end portion movably coupled to the link and a distal end portion. The distal end portion of the first tool member can engage a first object and be associated with a first medical function, the distal end portion of the second tool member can engage a second object and be associated with a second medical function, and the distal end portion of the third tool member can engage the first object or the second object and be associated with the first and/or second medical function. Each of the first, second and third tool members can move relative to the link independent of movement of the each of the other tool members.