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US-20260123926-A1 - ENDOSCOPIC SUTURE CINCH

US20260123926A1US 20260123926 A1US20260123926 A1US 20260123926A1US-20260123926-A1

Abstract

A method cinches a suture. The method provides a cinch having a suture capturing portion configured to capture a suture, a cinch lock coupled with the suture capturing portion, and a cinch anchor having a lumen. The suture capturing portion is extended out of the lumen to capture the suture. The suture is captured by the suture capturing portion. The suture capturing portion is retracted into the lumen of the cinch anchor. The suture is cinched between the cinch lock and the cinch anchor.

Inventors

  • Azadeh Khanicheh
  • Amos G. Cruz
  • Judy Walish

Assignees

  • EnVision Endoscopy, Inc.

Dates

Publication Date
20260507
Application Date
20260105

Claims (20)

  1. 1 . A method of cinching a suture, the method comprising: providing a cinch lock comprising a suture capturing portion configured to capture a suture, extending the suture capturing portion out of a lumen of a cinch anchor to capture the suture; retracting the suture capturing portion into the lumen of the cinch anchor; and coupling the suture with the cinch anchor using the cinch lock.
  2. 2 . The method as defined by claim 1 , further comprising: deploying the cinch anchor within a patient by pressing the handle to overcome a threshold deployment force.
  3. 3 . The method as defined by claim 1 , further comprising: positioning the cinch anchor into working channel of an endoscope; and extending the suture capturing portion out of the working channel of the endoscope.
  4. 4 . The method as defined by claim 1 , further comprising repeating cinching the suture between a second cinch lock and a second cinch anchor at different locations on the suture.
  5. 5 . The method as defined by claim 1 , wherein the suture capturing portion includes a hook.
  6. 6 . The method as defined by claim 1 , further comprising: stitching the suture in the patient prior to capturing the suture.
  7. 7 . The method as defined by claim 1 , wherein the suture is cinched by an interference fit between the cinch anchor and the cinch lock.
  8. 8 . The method as defined by claim 1 , wherein the cinch lock has a suture opening configured to receive the suture.
  9. 9 . The method as defined by claim 1 , wherein the suture lock has a break notch, the method further comprising pulling the wire to position the suture lock into the suture anchor and overcome a threshold force to break the break notch.
  10. 10 . A cinching system comprising: an endoscope having an insertion tube, the insertion tube having at least one working channel; a cinching device comprising: a handle movably coupled with a flexible drive wire, the handle configured to move the drive wire proximally or distally within the at least one working channel of the endoscope; a cinch lock having a suture capturing portion, the cinch lock coupled with the drive wire, wherein movement of the drive wire in a distal direction causes movement of the cinch lock in a distal direction; a cinch anchor configured to receive the cinch lock and having a lumen through which the drive wire passes; wherein the cinch lock is configured to couple the cinch anchor with the suture when the cinch lock and suture are positioned in the lumen.
  11. 11 . The system of claim 10 , wherein the cinch lock is configured to detach from the flexible drive wire using a breakable joint.
  12. 12 . The system of claim 10 , wherein the suture capturing portion includes a hook.
  13. 13 . The system of claim 10 , wherein the suture capturing portion has an opening for receiving a suture.
  14. 14 . The system of claim 13 , wherein the opening is proximally facing.
  15. 15 . The system of claim 13 , wherein the opening faces radially outwardly relative to a central axis of the cinch lock.
  16. 16 . The system of claim 10 , wherein the suture capturing portion is rotatable.
  17. 17 . The system of claim 10 , wherein the suture capturing portion is connected to the drive wire.
  18. 18 . The system of claim 10 , wherein the suture capturing portion is formed by a portion of the drive wire.
  19. 19 . A cinching device comprising: a cinch anchor configured to fit within a working channel of an endoscope, the cinch anchor having a lumen extending from a proximal end to a distal end; a cinch lock having a suture capturing portion movably positioned in the lumen, the suture capturing portion configured to capture a suture, wherein the cinch lock is configured to couple the cinch anchor and the suture.
  20. 20 . The cinching device of claim 19 , wherein the cinch lock includes a hook.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This patent application is a continuation of United States patent application Ser. No. 17/991,526, which is a continuation-in-part of United States patent application Ser. No. 17/508,989, filed Oct. 23, 2021, entitled “ENDOSCOPIC SUTURE CINCH,” which claims priority to provisional United States patent application No. 63/104,585, filed Oct. 23, 2020, entitled “ENDOSCOPIC SUTURE CINCH AND METHOD OF APPLYING,” the disclosures of which are each incorporated herein, in their entirety, by reference. United States patent application Ser. No. 17/991,526 also claims priority to provisional United States patent application No. 63/399,078, filed Aug. 18, 2022, entitled “ENDOSCOPIC SUTURE CINCH,” the disclosure of which is incorporated herein, in its entirety, by reference. STATEMENT AS TO FEDERALLY SPONSORED RESEARCH This invention was made with government support under Award #1912944 by National Science Fund (NSF) SBIR Phase I. The government has certain rights in the invention. FIELD OF THE INVENTION Illustrative embodiments of the invention generally relate to endoscopic devices and, more particularly, the various embodiments of the invention relate to a suture cinch that is delivered through a working channel of the endoscope. BACKGROUND OF THE INVENTION A suture cinch is an alternative method to tying a knot to secure and anchor the suture for wound closure and tissue approximation. The cinch can be utilized for both interrupted and running stitches. Such cinching devices generally affix the suture by compression between two concentric cylindrical components. Currently available flexible endoscopy cinching devices load the suture into the cinch outside the patient's body. A free end of the suture (which is the end of the suture not attached to a needle) must be loaded into a cinching device outside the endoscope's working channel. Such devices often utilize a suture threader to thread the suture into a cinch, enabling the cinch to advance through a working channel of the endoscope. Endoscopic snares usually are used to remove a polyp, adenoma, or foreign body from inside gastrointestinal tract through working channel of an endoscope. Alternatively, endoscopic hooks are currently used for endoscopic submucosal dissection. SUMMARY OF VARIOUS EMBODIMENTS In accordance with one embodiment of the invention, a method cinches a suture. The method provides a cinch lock comprising a suture capturing portion configured to capture a suture. The suture capturing portion extends out of a lumen of a cinch anchor to capture the suture. The suture capturing portion is retracted into the lumen of the cinch anchor. The suture is captured between the cinch lock and the cinch anchor. A medical professional may deploy the cinch anchor within a patient by pressing the handle to overcome a threshold deployment force. The cinch maybe positioned into a working channel of an endoscope. The suture capturing portion may be extended out of the working channel of an endoscope. In various embodiments, the patient may be stitched with a suture. The suture capturing portion of the cinch lock may be used to capture the suture. In some embodiments, the suture capturing portion may include a hook. The cinch lock may then be retracted into the anchor housing. The medical professional may manipulate a handle to control the cinch lock and the capturing of the suture. In various embodiments, the suture is cinched by an interference fit between the cinch anchor and the cinch lock. In accordance with another embodiment, a cinching system includes an endoscope having an insertion tube. The insertion tube has at least one working channel. A cinching device includes a handle movably coupled with a flexible drive wire. The handle is configured to move the drive wire proximally or distally within a working channel of an endoscope. The cinching device includes a cinch lock having a suture capturing portion. The cinch lock is coupled with a distal end of the drive wire. The distal end of the drive wire may be flexible. The distal end of the wire may be pre-formed to a particular shape (e.g. curved, bent). These advantageously allow the hook to capture the suture easily. Movement of the drive wire in a distal direction causes movement of the cinch lock in a distal direction. A cinch anchor is configured to receive the cinch lock and has a lumen through which the drive wire passes. An inner diameter of the lumen is configured to provide an interference fit with the cinch lock and suture when the cinch lock enters the lumen. In accordance with yet another embodiment, a cinching device includes a delivery housing configured to fit within a working channel of an endoscope. A cinch anchor is coupled with the delivery housing. The cinch anchor has a lumen extending from a proximal end to a distal end. A cinch lock has a suture capturing portion movably positioned in the lumen. The suture capturing portion is configured to captur