Jaw for a surgical tubular shaft instrument

A jaw assembly for a surgical tubular shaft instrument, the jaw assembly comprising:

• a supporting component,
• a first arm including a first active area, and
• a second arm having a second active area,
• each of the first arm and/or the second arm having one link element, the first arm and the second arm being held by the supporting component in an axial direction,
• the jaw assembly further comprising a cam carrier element which is axially movable relative to the supporting component and carries at least two cams,
• said one link element designed to be in contact with the at least two cams when there is a relative axial movement between the supporting component and the cam carrier element, said cams being provided on the cam carrier element, said one link element designed to slide off the at least two cams to effect an opening or closing of the jaw assembly by a movement of the first arm and the second arm directed toward each other or away from each other, wherein the first arm and/or the second arm has/have at least one projection which engages in an area of the supporting component and in this way restricts or prevents an axial movement of the first arm and/or the second arm relative to the supporting component.

A jaw assembly for a surgical tubular shaft instrument, the jaw assembly comprising:

• a supporting component,
• a first arm including a first active area, and
• a second arm having a second active area,
• each of the first arm and/or the second arm having one link element, the first arm and the second arm being held by the supporting component in an axial direction,
• the jaw assembly further comprising a cam carrier element which is axially movable relative to the supporting component and carries at least two cams,
• said one link element designed to be in contact with the at least two cams when there is a relative axial movement between the supporting component and the cam carrier element, said cams being provided on the cam carrier element, said one link element designed to slide off the at least two cams to effect an opening or closing of the jaw assembly by a movement of the first arm and the second arm directed toward each other or away from each other,
• wherein said one link element is planar and the cam carrier element is planar, and said one link element is adjacent to a flat side of the cam carrier element so that a sandwich-type structure is formed,
• wherein the cam carrier element and said one link element form at least one area in which a link path and the pertaining cam of the cam carrier element form an undercut so that said one link element is prevented from lifting off the cam carrier element, and
• wherein at least one area of an undercut is provided over an entire range of movement of said one link element to the cam carrier element from a completely opened position to a completely closed position of the jaw assembly.

A jaw assembly for a surgical tubular shaft instrument, the jaw assembly comprising:

• a supporting component,
• a first arm including a first active area, and
• a second arm having a second active area,
• each of the first arm and/or the second arm having one link element, the first arm and the second arm being held by the supporting component in an axial direction,
• the jaw assembly further comprising a cam carrier element which is axially movable relative to the supporting component and carries at least two cams,
• said one link element designed to be in contact with the at least two cams when there is a relative axial movement between the supporting component and the cam carrier element, said cams being provided on the cam carrier element, said one link element designed to slide off the at least two cams to effect an opening or closing of the jaw assembly by a movement of the first arm and the second arm directed toward each other or away from each other,
• wherein said one link element is planar and the cam carrier element is planar, and said one link element is adjacent to a flat side of the cam carrier element so that a sandwich-type structure is formed, and
• wherein at least three link paths are configured on said one link element of the first arm and/or the second arm, wherein at any given time during an opening and closing operation of the jaw assembly, at least two of the at least three link paths each are adjacent to one.

A jaw assembly for a surgical tubular shaft instrument, the jaw assembly comprising:

• a supporting component,
• a first arm including a first active area, and
• a second arm having a second active area,
• each of the first arm and/or the second arm having one link element, the first arm and the second arm being held by the supporting component in an axial direction,
• the jaw assembly further comprising a cam carrier element which is axially movable relative to the supporting component and carries at least two cams,
• said one link element designed to be in contact with the at least two cams when there is a relative axial movement between the supporting component and the cam carrier element, said cams being provided on the cam carrier element, said one link element designed to slide off the at least two cams to effect an opening or closing of the jaw assembly by a movement of the first arm and the second arm directed toward each other or away from each other,
• wherein the first active area of the first arm and the second active area of the second arm exhibit a kinematics curve symmetrical to a central axis of the jaw assembly.

A jaw assembly for a surgical tubular shaft instrument, the jaw assembly comprising:

• a supporting component,
• a first arm including a first active area, and
• a second arm having a second active area,
• each of the first arm and/or the second arm having one link element, the first arm and the second arm being held by the supporting component in an axial direction,
• the jaw assembly further comprising a cam carrier element which is axially movable relative to the supporting component and carries at least two cams,
• said one link element designed to be in contact with the at least two cams when there is a relative axial movement between the supporting component and the cam carrier element, said cams being provided on the cam carrier element, said one link element designed to slide off the at least two cams to effect an opening or closing of the jaw assembly by a movement of the first arm and the second arm directed toward each other or away from each other,
• wherein the surgical tubular shaft instrument is a pair of scissors, a needle holder, a clamp or any other surgical instrument in which two arms are movable toward each other and/or past each other.