Device and method for through the scope endoscopic hemostatic clipping
Medical device used to cause hemostasis of blood vessels using a clip arrangement delivered to a target region through an endoscope. Method for using the device to cause hemostasis of a blood vessel through an endoscope. Medical device including a reversibly closeable clip, a locking arrangement, a control wire, a sheath, and a handle with an actuating trigger. Through the endoscope, hemostatic clipping device that is fully reversible and lockable. Hemostatic clip that reversibly targets and clips bleeding ulcers.
1. A clipping device, comprising:
a first clip arm and a second clip arm movable between an open configuration, in which distal ends of the first and second clip aims are separated from one another to receive a target tissue therebetween, and a closed configuration, in which the distal ends of the first and second clip arms are moved toward one another to grip the target tissue therebetween; and
an opening element received between the first and second clip arms, the opening element movable between a first configuration, in which the opening element moves the first and second clip arms to the open configuration, and a second configuration corresponding to the movement of the first and second clip aims in the closed configuration, the opening element including a locking element sized to be received through a hole between the first and second clip arms such that, when the locking element is received within the hole, the first and second clip arms are locked in the closed position.
2. The device of claim 1 , wherein the opening element engages an inner surface of the first and second clip arms.
3. The device of claim 1 , wherein the opening element includes a first link arm and a second link arm movable relative to one another, distal ends of the first and second link arms separated from one another in the first configuration and drawn toward one another in the second configuration.
4. The device of claim 1 , wherein, in the first configuration, the opening element urges the first and second clip arms away from one another toward the open configuration.
5. The device of claim 1 , further comprising a rigid sheath slidably receiving proximal ends of the first and second clip arms.
6. The device of claim 5 , wherein the rigid sheath provides a compressive force to the first and second clip arms in the closed configuration.
7. The device of claim 5 , further comprising a control wire coupled to proximal ends of the clip and longitudinally movable relative to the rigid sheath to move the first and second clip arms between the open and closed configurations.
8. The device of claim 7 , wherein, when a proximal tensile force greater than a predetermined threshold value is applied to the control wire, the clip is one of locked in the closed configuration and separated from the control wire.
9. The device of claim 1 , wherein tips at the distal ends of the first and second clipping arms extend laterally inward toward one another.
10. A medical device, comprising:
a clip including a first clip arm and a second clip arm movable between an open configuration, in which distal ends of the first and second clip arms are separated from one another to receive a target tissue therebetween, and a closed configuration, in which the distal ends of the first and second clip arms are moved toward one another to grip the target tissue therebetween;
an opening element received between the first and second clip arms, the opening element movable between a first configuration, in which the opening element moves the first and second clip arms to the open configuration, and a second configuration corresponding to the movement of the first and second clip arms in the closed configuration, the opening element including a locking element sized to be received through a hole between the first and second clip arms such that, when the locking element is received within the hole, the first and second clip arms are locked in the closed position; and
a rigid sheath slidably receiving a proximal end of the clip.
11. The device of claim 10 , wherein the opening element engages an inner surface of the first and second clip arms.
12. The device of claim 10 , wherein the opening element includes a first link arm and a second link arm movable relative to one another, distal ends of the first and second link arms separated from one another in the first configuration and drawn toward one another in the second configuration.
13. The device of claim 10 , wherein, in the first configuration, the opening element urges the first and second clip arms away from one another toward the open configuration.
14. The device of claim 10 , wherein the rigid sheath provides a compressive force to the first and second clip arms in the closed configuration.
15. The device of claim 10 , further comprising a control wire coupled to proximal ends of the clip and longitudinally movable relative to the rigid sheath to move the first and second clip arms between the open and closed configurations.
16. The device of claim 15 , wherein, when a proximal tensile force greater than a predetermined threshold value is applied to the control wire, the clip is one of locked in the closed configuration and separated from the control wire.
17. A method for treating tissue, comprising:
inserting a clipping device to a target tissue site, the clipping device including a first clip arm and a second clip arm;
moving the clipping device to an open configuration to receive a target tissue between the first and second clip arms, the clipping device moved to the open configuration via an opening element received between the first and second clip arms, the opening element moving distal ends of the first and second clip arms away from one another toward the open configuration;
moving the clipping device toward a closed configuration to grip the target tissue between the first and second clip arms, the clipping device moved toward the closed configuration by moving the opening element from a first configuration, which moves the first and second clip arms away from one another, to a second configuration, and
moving a locking element of the opening element through a hole positioned between the first and second clip arms such that, when the locking element is received within the hole, the first and second clip arms are locked in the second configuration.
18. The method of claim 17 , wherein the clipping device is moved between the open and closed configurations via a control wire coupled to a proximal end of the clipping device.
19. The method of claim 17 , wherein the opening element includes a first link arm and a second link arm movable relative to one another, distal ends of the first and second link arms separated from one another in the first configuration and drawn toward one another in the second configuration.
20. The method of claim 18 , further comprising applying a proximal tensile force greater than a predetermined threshold value to the control wire to separate the control wire from the clipping device.