Clip applying mechanism and clip applying apparatus thereof

A clip apply apparatus, comprising a clip applying mechanism and a handle assembly, wherein the clip applying mechanism comprising:

• a tube body, comprising a head end and a tail end opposite to each other;
• a main shaft, the main shaft being arranged proximal to the tail end and at least portion of the main shaft being arranged in the tube body;
• a clip-cartridge assembly, the clip-cartridge assembly being configured to penetrate through the tube body and comprising:
• a clip cartridge arranged in the tube body and an end effector configured to penetrate out of the head end;
• the clip cartridge being configured to be filled with a clip;
• a clip-pushing assembly, at least portion of the clip-pushing assembly being arranged in the tube body, and the clip-pushing assembly being configured to be pushed by the main shaft toward the head end to convey the clip in the clip cartridge into the end effector;
• and
• a firing assembly, at least portion of the firing assembly being located in the tube body, and the firing assembly being configured to be pushed by the main shaft toward the head end to close the end effector, so that the clip in the end effector is fired;
• wherein the clip applying mechanism further comprises:
• a main-shaft connecting member, connected with the main shaft;
• a firing connecting member, connected with the firing assembly;
• an engagement mechanism, arranged between the main-shaft connecting member and the firing connecting member;
• wherein the engagement mechanism, the firing connecting member, the main-shaft connecting member and the firing assembly are configured such that:
• in a case where the clip is fired, the main-shaft connecting member drives the firing connecting member to move in a direction facing away from the head end through the engagement mechanism, and the firing connecting member drives the firing assembly to move in a same direction, so that the end effector is partially opened,
• wherein a first engagement member comprises a pin;
• a second engagement member comprises a slot, the slot comprises a release position and a lock position, the pin is configured to be capable of moving between the release position and the lock position;
• the slot and the pin are configured such that:
• in a case where the engagement mechanism is in a lock state, the pin is in the lock position;
• in a case where the engagement mechanism is in a release state, the pin is in the release position and is capable of moving out of the slot;
• in a case where the engagement mechanism is in a separate state, the pin is located outside the slot.

A clip applying mechanism of a clip applying apparatus, comprising:

• a tube body, comprising a head end and a tail end opposite to each other;
• a main shaft, the main shaft being arranged proximal to the tail end and at least portion of the main shaft being arranged in the tube body;
• a clip-cartridge assembly, the clip-cartridge assembly being configured to penetrate through the tube body and comprising:
• a clip cartridge arranged in the tube body and an end effector configured to penetrate out of the head end;
• the clip cartridge being configured to be filled with a clip;
• a clip-pushing assembly, at least portion of the clip-pushing assembly being arranged in the tube body, and the clip-pushing assembly being configured to be pushed by the main shaft toward the head end to convey the clip in the clip cartridge into the end effector;
• and
• a firing assembly, at least portion of the firing assembly being located in the tube body, and the firing assembly being configured to be pushed by the main shaft toward the head end to close the end effector, so that the clip in the end effector is fired;
• wherein the clip applying mechanism further comprises:
• a main-shaft connecting member, connected with the main shaft;
• a firing connecting member, connected with the firing assembly;
• an engagement mechanism, arranged between the main-shaft connecting member and the firing connecting member;
• wherein the engagement mechanism, the firing connecting member, the main-shaft connecting member and the firing assembly are configured such that:
• in a case where the clip is fired, the main-shaft connecting member drives the firing connecting member to move in a direction facing away from the head end through the engagement mechanism, and the firing connecting member drives the firing assembly to move in a same direction, so that the end effector is partially opened,
• wherein the clip applying mechanism further comprises:
• a housing, the firing connecting member being located in the housing;
• a circumferential engagement mechanism, arranged between the firing connecting member and the housing, the firing connecting member and the housing being configured to be engaged with each other in a circumferential direction of the main shaft through the circumferential engagement mechanism, and the firing connecting member and the housing being capable of achieving relative movement in an axial direction of the main shaft,
• wherein the housing comprises:
• a first housing portion and a second housing portion arranged in an axial direction of the tube body, wherein the first housing portion is proximal to the head end, the second housing portion is distal to the head end and is connected with the first housing portion;
• the first housing portion is configured to be capable of rotating in a circumferential direction of the main shaft relative to the second housing portion;
• the circumferential engagement mechanism comprises:
• a tab arranged on the second housing portion and a slot arranged on the firing connecting member;
• the tab and the slot are configured to be engaged with each other.