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 medical device, comprising:
a clip having first and second clip legs;
a control member extending from a proximal actuator to the clip, the control member being operable to control movement of the first and second clip legs away from one another into a tissue-receiving configuration; and
a linkage operably associated with the control member and configured to move radially outward to dislodge the clip from the control member.
2. The medical device of claim 1 , wherein a distal end of the control member includes an enlargement received in a corresponding opening formed in the linkage member.
3. The medical device of claim 2 , wherein radial expansion of the linkage enlarges dimensions of the opening to release the enlargement therefrom.
4. The medical device of claim 1 , wherein the control member is adapted to disengage from the linkage upon application of a predetermined proximal tensile force thereto.
5. The medical device of claim 1 , further comprising a sleeve having a channel extending therethrough to house a proximal portion of the clip therein.
6. The medical device of claim 4 , wherein the sleeve includes an expanded section lockingly engaging the radially expanded linkage member therein.
7. The medical device of claim 1 , wherein the control member is reversibly operable to move the clip between a closed configuration and the open, tissue-receiving configuration.
8. The medical device of claim 1 , wherein the linkage includes first and second linkage arms.
9. The medical device of claim 1 , wherein distal ends of the first and second clip legs are curved radially inward.
10. The medical device of claim 1 , wherein the clip is biased to the open, tissue-receiving configuration.
11. A device for causing hemostasis, comprising:
a clip having first and second clip legs;
a control member extending from a proximal actuator to the clip, the control member being operable to control movement of the first and second clip legs away from one another into a tissue-receiving configuration;
an outer sleeve having a channel extending therethrough to house a proximal portion of the clip therein; and
a linkage operably associated with the control member and configured to expand radially outward to dislodge the clip from the control member and lockingly engage the outer sleeve.
12. The device of claim 11 , wherein the sleeve includes an expanded section lockingly engaging the radially expanded linkage member therein.
13. The device of claim 11 , wherein a distal end of the control member includes an enlargement received in a corresponding opening formed in the linkage member.
14. The device of claim 13 , wherein radial expansion of the linkage enlarges dimensions of the opening to release the enlargement therefrom.
15. The device of claim 11 , wherein the control member is adapted to disengage from the linkage upon application of a predetermined proximal tensile force thereto.
16. The device of claim 11 , wherein the control member is reversibly operable to move the clip between a closed configuration and the open, tissue-receiving configuration.
17. The device of claim 11 , wherein the linkage includes first and second linkage arms.
18. The device of claim 11 , wherein distal ends of the first and second clip legs are curved radially inward.
19. The device of claim 11 , wherein the clip is biased to the open, tissue-receiving configuration.
20. A method for causing hemostasis, comprising:
inserting a clip to a target position in a living body adjacent target tissue to be clipped, the clip having first and second clip arms and being coupled to a control member via a linkage;
moving the control member distally to cause a corresponding distal movement of the clip, the movement causing the first and second clip arms to move radially outward away from one another to an open, tissue-receiving configuration;
drawing the control member proximally to cause a corresponding proximal movement of the clip, the movement causing the first and second clip arms to move radially inward toward one another to a closed, tissue-gripping configuration; and
applying a proximal tensile force of at least a predetermined threshold to cause a radial expansion of the linkage member and separate the linkage member from the control member.