Systems and methods for hemoclip deployment

Patent metadata

Field	Value
Publication number	US-12490991-B2
Application number	US-202117922710-A
Country	US
Kind code	B2
Filing date	May 6, 2021
Priority date	May 8, 2020
Publication date	Dec 9, 2025
Grant date	Dec 9, 2025

Abstract

Disclosed are systems and methods for safely and effectively deploying a hemoclip onto a patient's desired target using a hemoclip system. For instance, disclosed is an catheter that includes a lumen for a hemoclip to pass through. Additionally, disclosed are hemoclips that are configured to be in a compressed position until the hemoclip is deployed out of a catheter where it opens. Then, the hemoclip may be clipped onto the target to encapsulate the desired target within the patient. Once the hemoclip is clamped onto the target, the catheter can move onto the next target for successive deployment and utilization of the hemoclips without manual reload.

First claim

The invention claimed is:

1 . A closing ring for a hemoclip, the closing ring comprising:
a body comprising a flat portion, at least one catheter interface and at least one jaw locking interface, wherein the flat portion including an advancement stop tab is configured to allow the body to move past a retention tab on a catheter while the advancement stop tab is configured to contact the catheter and stop movement of the body beyond the retention tab; wherein the at least one catheter interface is configured to engage with the catheter housing the closing ring; and wherein the at least one jaw locking interface is configured to engage with at least one jaw of two or more jaws of the hemoclip.

2 . The closing ring of claim 1 , further comprising:
one or more tissue guards at a distal end, the one or more tissue guards having a central opening to allow an actuation wire to pass through; and/or a common interface on the body, the common interface configured to engage with the catheter or any of the two or more jaws of the hemoclip.

3 . The closing ring of claim 2 , wherein one or more of the at least one catheter interface, the at least one jaw locking interface, and the common interface are openings on the body; and/or wherein the one or more of the at least one catheter interface, the at least one jaw interface, and the common interface are openings having a geometric shape.

4 . The closing ring of claim 1 , wherein the body is hollow and configured to fit over a hub supporting the two or more jaws of the hemoclip and within the catheter; and/or wherein the closing ring is configured to be advanced over the two or more jaws to hold the two or more jaws closed.

5 . A hemoclip system, the system comprising:
a hemoclip comprising a first and second jaw; a hub configured to connect to the hemoclip; a closing ring configured to fit over the hub; a catheter comprising a tunnel configured to fit the hemoclip; and a handle connected to the catheter, wherein the handle comprises a trigger connected to a gear system, the gear system is connected to a shell, and the shell is connected to the catheter.

6 . The system of claim 5 , further comprising an actuation wire routed through a channel in the hub.

7 . The system of claim 6 , wherein the hub comprises flexible tabs that are configured to releasably attached to a catch attached to the wire.

8 . The system of claim 5 , wherein:
each of the first and second jaw comprise a locking tab; and/or the first and second jaw are attached to a joint; and/or the closing ring is configured to be advanced over the first and second jaws to hold the first and second jaws closed.

9 . The system of claim 8 , wherein the closing ring comprises at least one jaw locking interface configured to engage with the locking tab; and/or wherein the hub is configured to connect to the hemoclip at the joint.

10 . The system of claim 5 , further comprising:
an endoscope comprising the catheter.

11 . The system of claim 5 , wherein the catheter comprises one or more retention tabs configured to engage with one or more catheter interfaces of the closing ring.

12 . The system of claim 5 , wherein the handle further comprises:
a thumbwheel; a main body; and an actuation wire control connected to a latch.

13 . The system of claim 5 , wherein the trigger is configured to advance the shell to advance the catheter when partially depressed.

14 . The system of claim 5 , wherein the catheter comprises a staggered laser cut pattern; and/or wherein the catheter comprises an outer sheath, a torque tube and an actuation wire.

15 . A method of deploying a hemoclip, the method comprising:
inserting a hemoclip attached to a hub with a closing ring attached to the hub inside a catheter; advancing a wire connected to the hub to advance the hemoclip to an end of the catheter; rotating the catheter to engage the catheter with the closing ring; advancing the closing ring engaged with the catheter to lock a pair of jaws of the hemoclip; rotating the catheter to disengage the catheter from the closing ring; and retracting the wire to disconnect the hub from the wire.

16 . The method of claim 15 , wherein:
engaging the catheter with the closing ring comprises rotating the catheter so that a retention tab protrudes through an interface window of the closing ring; and/or advancing the wire to the hub to advance the hemoclip to the end of the catheter comprises advancing the wire until an advancement stop on the closing ring contacts the retention tab on the catheter; and/or retracting the wire to disconnect the hub from the wire comprises pulling a catch connected to the wire out of one or more flexible tabs of the hub.

17 . The method of claim 15 , wherein the closing ring comprises a locking window; and wherein advancing the closing ring to lock a pair of jaws of the hemoclip comprises engaging a locking tab on at least one of the pair of jaws with the locking window.

18 . The method of claim 15 , further comprising, prior to locking the pair of jaws disengaging the catheter from the closing ring and retracting the hemoclip along with the closing ring.

Assignees

• Cedars Sinai Medical Center

Inventors

• Goldenberg David
• Schieber Andy
• Souza Marcus
• Digiore Andrew
• Evans Ryan

Classifications

• A61B2017/12004

  for haemostasis, for prevention of bleeding · CPC title

• A61B2017/00477

  Coupling (A61B2017/0046 takes precedence) · CPC title

• A61B2017/00367

  Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like · CPC title

• A61B2017/00292

  mounted on or guided by flexible, e.g. catheter-like, means · CPC title

• A61B2090/034

  abutting on parts of the device itself · CPC title