Reinforced mechanical hemostasis clip

Patent metadata

Field	Value
Publication number	US-2019105046-A1
Application number	US-201816129330-A
Country	US
Kind code	A1
Filing date	Sep 12, 2018
Priority date	Oct 11, 2017
Publication date	Apr 11, 2019
Grant date	—

Abstract

A device for treating a tissue includes a capsule extending longitudinally from a proximal end to a distal end and including a channel extending therethrough, clip arms, proximal ends of which are slidably received within the channel of the capsule so that the clip arms are movable between an open configuration, in which distal ends of the clip arms extend distally past the distal end of the capsule to be separated from one another, and a closed configuration, in which the clip arms are restrained via an interior surface of the capsule so that distal ends of the clips arms are drawn toward one another, and a reinforcement element coupled to the clip arms, the reinforcement element preventing deflection of the clip arms when engaging a target tissue.

First claim

1 - 15 . (canceled)

16 . A device for treating a tissue, comprising:
a capsule extending longitudinally from a proximal end to a distal end and including a channel extending therethrough; clip arms, proximal ends of which are slidably received within the channel of the capsule so that the clip arms are movable between an open configuration, in which distal ends of the clip arms extend distally past the distal end of the capsule to be separated from one another, and a closed configuration, in which the clip arms are restrained via an interior surface of the capsule so that distal ends of the clips arms are drawn toward one another; and a reinforcement element coupled to the clip arms, the reinforcement element preventing deflection of the clip arms when engaging a target tissue.

17 . The device of claim 16 , wherein the reinforcement element is a suture, first and second end portions of the suture being fixed to an interior surface of each of the clip arms so a length of the suture extends between the clip arms.

18 . The device of claim 17 , wherein each of the clip arms include first and second holes extending therethrough, the first end portion of the suture extending through the first and second holes of a first clip arm and the second end portion of the suture extending through the first and second holes of a second clip arm, first and second ends of the suture each including an increased diameter element having a diameter larger than a diameter of the first and second holes to prevent the suture from being pulled through the first and second holes, wherein the increased diameter elements are positioned at an interior surface of the clip arms.

19 . The device of claim 16 , wherein the clip arms include first and second flanges extending from lateral sides of the clip arms, the first and second winged flanges configured to be folded toward a longitudinal axis of the clip arms to an interior surface thereof to secure ends of the suture to the clip arms.

20 . The device of claim 16 , wherein the reinforcement element includes first and second sutures, the first and second sutures extending from distal ends coupled to first and second clip arms, respectively, to proximal ends coupled to a central member within the capsule channel, wherein the proximal end of the first suture is coupled to a lateral side of the central member closest to the second clip arm and the proximal end of the second suture is coupled to a lateral side of the central member closest to the first clip arm so that the first and second sutures form a crisscross.

21 . The device of claim 20 , wherein proximal portions of the first and second sutures pass through the central member to form the crisscross therein.

22 . The device of claim 17 , further comprising a second suture including first and second ends coupled to a central member within the capsule channel, a medial portion of the second suture wrapping around a medial portion of the first suture.

23 . The device of claim 16 , wherein the reinforcement element comprises first and second support members, the first and second support members extending from distal ends coupled to an outer surface of the first and second clip arms, respectively, to proximal ends coupled to opposing lateral sides of the capsule.

24 . The device of claim 23 , wherein each of the distal ends of the first and second support members is coupled to the clip anus via a pivot joint.

25 . The device of claim 23 , wherein each of the proximal ends of the first and second support member is coupled to the capsule via a sliding joint, the sliding joint allowing the proximal ends of the support members to move proximally and distally along an axis parallel to the central longitudinal axis of the capsule.

26 . The device of claim 25 , wherein the sliding joint also permits rotational movement of the proximal ends of support members.

27 . The device of claim 16 , wherein the reinforcement element includes at least one rib extending longitudinally along an outer surface of a flexing portion of the clip arms.

28 . A clipping device, comprising:
a proximal portion; a distal portion releasably coupled to the proximal portion so that the distal portion is deployable therefrom, the distal portion including: a capsule extending longitudinally from a proximal end to a distal end and including a channel extending therethrough; clip arms extending from proximal ends slidably received within the channel of the capsule so that the clip arms are movable between an open configuration, in which distal ends thereof extend distally past the distal end of the capsule to be separated from one another, and a close configuration, in which the clip arms are restrained via an interior surface of the capsule so that the distal ends thereof are drawn toward one another; and at least one leaf spring extending from a proximal end to a distal end and sized and shaped to fit along an outer surface of a flexing medial portion of a clip arm, the leaf spring producing a counter force on the clip arm as it contacts target tissue to reduce deflection in the clip arm.

29 . The device of claim 28 , wherein one of the proximal and distal ends of the at least one leaf spring is fixed to the outer surface of the clip arm while the other end remains unfixed.

30 . The device of claim 28 , wherein the at least one leaf spring is coupled to the clip arm via interlocking features, the interlocking features configured to interact with mating features on the clip arms.

31 . A method for treating target tissue, comprising:
inserting a distal portion of a clipping device to a target area within a living body, the distal portion including a capsule and clip arms slidably received within the capsule to be movable between an open configuration, in which distal ends of the clip arms are separated from one another, and a closed configuration, in which the distal ends of the clip arms are drawn toward one another, the distal portion including a reinforcement element coupled to the clip arms, the reinforcement element preventing deflection of the clip arms when engaging a target tissue; positioning the clip arms in contact with a target tissue; and clipping a target portion of tissue by positioning the target portion of tissue between the clip arms in the open configuration and drawing the clip arms toward the closed configuration to grip the target portion of tissue.

32 . The method of claim 31 , wherein the reinforcement element is a suture, first and second end portions of the suture being fixed to an interior surface of each of the clip arms so a length of the suture extends between the clip arms.

33 . The method of claim 31 , wherein the reinforcement element comprises at least one leaf spring extending from a proximal end to a distal end and sized and shaped to fit along an outer surface of a flexing medial portion of a clip arm, the leaf spring producing a counter force on the clip arm as it contacts target tissue to reduce deflection in the clip arm

34 . The method of claim 31 , wherein the reinforcement element comprises first and second support members, the first and second support members extending from distal ends coupled to an outer surface of the first and second clip arms, respectively, to proximal ends coupled to opposing lateral sides of the capsule.

35 . The method of claim 31 , wherein the reinforcement element comprises first and second sutures, the first and second sutures extending from distal ends coupled to first and seco

Assignees

• Boston Scient Scimed Inc

Inventors

• Jagelski Matthew R
• Trumbull Greg
• Evers Ryan
• Wilcox Kevin John
• Ashton Caitlyn Bintz
• Larson Heather
• Ryan Shawn
• Hubbard Dennis

Classifications

• A61B2017/0641

  having at least three legs as part of one single body · CPC title

• A61B17/0057

  Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect (sutures A61B17/04; closing rectum or urethra near body surface A61F2/0009) · CPC title

• A61B2017/00668

  the implement being a tack or a staple · CPC title

• A61B17/083 Primary

  Clips, e.g. resilient · CPC title

• A61B17/1227

  Spring clips · CPC title