In-vivo visualization system

A medical device handle comprising:

• a handle housing;
• a steering mechanism, including:
• a pulley disposed in the handle housing;
• and
• a steering knob coupled to the pulley;
• and
• a lock mechanism, comprising:
• a lock lever;
• a first member coupled to the lock lever, wherein the first member includes a boss portion that is keyed for rotation with a portion of the lock lever, and wherein the first member includes a first flange having a first cam profile extending annularly around a perimeter of the first flange;
• and
• a second member positioned adjacent to the pulley, wherein the second member includes a boss section that is configured for receiving at least a portion of the first member therein, and wherein the second member includes a second flange having a second cam profile extending annularly around a perimeter of the second flange;
• wherein rotation of the lock lever from an unlocked position to a locked position causes rotation of the first member, wherein the rotation of the first member causes the first cam profile to interact with the second cam profile to translate the second member relative to the handle housing, and wherein the translation of the second member relative to the handle housing causes a translation of the pulley relative to the handle housing, thereby restricting rotation of the pulley.

A medical device handle comprising:

• a handle housing;
• a steering mechanism, comprising:
• a pulley disposed in the handle housing;
• a steering knob coupled to the pulley;
• and
• a lock mechanism, comprising:
• a lock lever;
• a first member coupled to the lock lever, wherein the first member includes a boss portion that is keyed for rotation with a portion of the lock lever, and wherein the first member includes a first flange having a first cam profile;
• and
• a second member positioned adjacent to the pulley, wherein the second member includes a boss section that is configured for receiving at least a portion of the first member therein, wherein the second member is restricted from rotating relative to the handle housing, and wherein the second member includes a second flange having a second cam profile;
• wherein rotating the lock lever from an unlocked position to a locked position causes the first member to rotate relative to the handle housing, wherein the rotation of the first member causes the second member to translate due to an interaction between the first cam profile and the second cam profile, and wherein the translation of the second member causes the steering mechanism to engage the second member and a surface of the handle housing, thereby restricting rotation of the pulley.

A medical device handle comprising:

• a handle housing;
• a steering mechanism comprising:
• a first pulley disposed in the handle housing;
• a first steering knob coupled to the first pulley;
• a second pulley disposed in the handle housing;
• a second steering knob coupled to the second pulley;
• and
• a thrust plate disposed between the first pulley and the second pulley, wherein the thrust plate is restricted from rotating relative to the handle housing;
• and
• a lock mechanism, comprising:
• a lock lever;
• a lever member coupled to the lock lever and including a first cam profile, wherein the lever member includes a boss portion that is keyed for rotation with a portion of the lock lever;
• and
• a pulley member positioned adjacent to the first pulley and including a second cam profile, wherein the pulley member includes a boss section that is configured for receiving at least a portion of the lever member therein;
• wherein rotation of the lock lever from an unlocked position to a locked position causes the lever member to rotate such that the first cam profile of the lever member interacts with the second cam profile of the pulley member to translate the pulley member relative to the handle housing, thereby causing a translation of the first pulley and of the second pulley relative to the handle housing, such that the first pulley frictionally engages a first side of the thrust plate, such that the second pulley frictionally engages a second side of the thrust plate, and such that the steering mechanism frictionally engages the pulley member and a surface of the handle housing, thereby restricting rotation of the first pulley and the second pulley.