Devices and methods for applying a hemostatic clip assembly

A hemostatic clip assembly, the assembly comprising:

• a distal clip housing defining a longitudinal axis;
• a jaw assembly having a pair of cooperating jaw members fixed to the distal clip housing by a first pin, the first pin oriented orthogonally relative to the longitudinal axis, wherein each jaw member includes a proximal body portion and a distal end effector, wherein the proximal body portion of each jaw member includes a respective cam slot and a rear opening connected to the cam slot and defining at least one proximal cantilever jaw arm;
• a jaw adapter yoke operatively connected to the jaw members, wherein the jaw adapter yoke is configured and adapted to translate axially along the longitudinal axis and rotate about the longitudinal axis, wherein at least one of the jaw members is configured and adapted to rotate about the first pin and to rotate about the longitudinal axis;
• and
• a second pin connecting between the jaw members and the jaw adapter yoke, wherein each jaw member includes a proximal body portion and a distal end effector, wherein the portion of each jaw member includes a pivot aperture configured and adapted to receive the first pin, and a respective cam slot configured and adapted to receive the second pin.

A hemostatic clip assembly, the assembly comprising:

• a distal clip housing defining a longitudinal axis;
• a jaw assembly having a pair of cooperating jaw members fixed to the distal clip housing by a first pin, the first pin oriented orthogonally relative to the longitudinal axis, wherein each jaw member includes a proximal body portion and a distal end effector, wherein the proximal body portion of each jaw member includes a respective cam slot and a rear opening connected to the cam slot and defining at least one proximal cantilever jaw arm;
• and
• a jaw adapter yoke operatively connected to the jaw members, wherein the jaw adapter yoke is configured and adapted to translate axially along the longitudinal axis and rotate about the longitudinal axis, wherein at least one of the jaw members is configured and adapted to rotate about the first pin and to rotate about the longitudinal axis,
• wherein the jaw adapter yoke includes a proximal receiving portion configured and adapted to receive therewithin a distal portion of a spring release of a proximal delivery catheter to transmit axial and rotational force to the jaw adapter yoke, wherein a portion of the spring release between a terminal distal end of the spring release and the outwardly extending flange portion has a constant diameter.

A device for applying a hemostatic clip assembly, the device comprising:

• a proximal delivery catheter including a proximal handle assembly and an elongated catheter body extending distally from the proximal handle assembly, the elongated catheter body defining a longitudinal axis;
• and
• a distal clip assembly removably connected to a distal end of the elongated catheter body, the distal clip assembly including a distal clip housing, a jaw assembly having a pair of cooperating jaw members fixed to the distal clip housing by a first pin, the first pin oriented orthogonally relative to the longitudinal axis, and a jaw adapter yoke operatively connected to the jaw members, wherein the proximal delivery catheter is configured and adapted to transmit linear motion along the longitudinal axis and torsion about the longitudinal axis to at least a portion of the distal clip assembly, wherein at least one of the jaw members is configured and adapted to rotate about the first pin and to rotate about the longitudinal axis, wherein each jaw member includes a proximal body portion and a distal end effector, wherein the proximal body portion of each jaw member includes a respective cam slot and a rear opening connected to the cam slot and defining at least one proximal cantilever jaw arm, and wherein the jaw adapter yoke includes a proximal receiving portion and the proximal delivery catheter includes a spring release having a distal portion configured and adapted to be received within the proximal receiving portion of the jaw adapter yoke to transmit axial and rotational force to the jaw adapter yoke, wherein a portion of the spring release between a terminal distal end of the spring release and the outwardly extending flange portion has a constant diameter.

A device for applying a hemostatic clip assembly, the device comprising:

• a proximal delivery catheter including a proximal handle assembly and an elongated catheter body extending distally from the proximal handle assembly, the elongated catheter body defining a longitudinal axis;
• and
• a distal clip assembly removably connected to a distal end of the elongated catheter body, the distal clip assembly including a distal clip housing, a jaw assembly having a pair of cooperating jaw members fixed to the distal clip housing by a first pin, the first pin oriented orthogonally relative to the longitudinal axis, and a jaw adapter yoke operatively connected to the jaw members, wherein the proximal delivery catheter is configured and adapted to transmit linear motion along the longitudinal axis and torsion about the longitudinal axis to at least a portion of the distal clip assembly, wherein at least one of the jaw members is configured and adapted to rotate about the first pin and to rotate about the longitudinal axis, wherein each jaw member includes a proximal body portion and a distal end effector, wherein the proximal body portion of each jaw member includes a respective cam slot and a rear opening connected to the cam slot and defining at least one proximal cantilever jaw arm, wherein the proximal delivery catheter includes a spring tube between a proximal end of the distal clip assembly and a distal end of the catheter body, wherein the spring tube includes at least one cantilever arm removably coupled to the distal clip housing, wherein the at least one cantilever arm includes an inwardly extending flange that removably engages with a circumferential slot defined about a periphery of a proximal end of the distal clip housing, and wherein the proximal delivery catheter includes a spring release positioned at least partially within the spring tube, wherein the spring tube includes an inward projection, wherein the spring release includes an outwardly extending flange portion configured and adapted to interact with the inward projection of the spring tube to selectively deflect the at least one cantilever arm of the spring tube and release the inwardly extending flange of the at least one cantilever arm from the circumferential slot of the distal clip housing.