Search

EP-4740877-A2 - DEVICE FOR UNLATCHING A SURGICAL CLIP

EP4740877A2EP 4740877 A2EP4740877 A2EP 4740877A2EP-4740877-A2

Abstract

The present disclosure is directed a method and device for unlatching a clip. The clip may have first and second leg members, the first leg member having a hook member and the second leg member having a tip member restrained by the hook member in the latched configuration. The method may include receiving the clip between first and second jaw members of a device and engaging the hook member of the first leg member with a wall of the second jaw member. The method may further include pressing on an outer surface of the first leg member with the first jaw member to open the hook member and release the clip from the latched configuration and receiving the tip member in a channel of the second jaw member after being unrestrained by the hook member where the tip member is spaced apart from the hook member.

Inventors

  • BOYERS, Jessica
  • DELGADO, JESSIE

Assignees

  • Teleflex Medical LLC

Dates

Publication Date
20260513
Application Date
20220506

Claims (15)

  1. A device (100) for unlatching a surgical clip (200) from a latched configuration, the surgical clip (200) comprising first and second leg members (202, 204), the first leg member (202) having a hook member (208) and the second leg member (204) having a tip member (210) restrained by the hook member (208) in the latched configuration, the device comprising: a first jaw member (150, 150') configured to press on an outer surface (220) of the first leg member (202) to release the surgical clip (200) from the latched configuration; and a second jaw member (170, 170') configured to engage the hook member (208); wherein the first jaw member (150, 150') includes at least one engagement member (166') configured to secure the surgical clip (200) to the device for extraction after unlatching.
  2. The device of claim 1, wherein the first jaw member (150, 150') has a length that is shorter than a length of the second jaw member (170, 170').
  3. The device of claim 1 or claim 2, wherein the second jaw member (170, 170') further comprises a wall (188, 188') configured to engage the hook member and a channel (182, 182') configured to receive the tip member when unrestrained by the hook member.
  4. The device of claim 3, wherein at least a portion of the channel (182, 182') is open on lateral sides.
  5. The device of any one of claims 3-4, wherein the wall (188, 188') has a groove (180, 180') configured to receive the hook member (208).
  6. The device of claim 5, wherein the groove (180, 180') has a distal slope configured to deflect the hook member (208).
  7. The device of any one of claims 3-6, wherein the channel (182, 182') of the second jaw member (170, 170') has a distal portion (184, 184') that has a distal slope.
  8. The device of any one of claims 3-7, wherein the channel (182, 182') of the second jaw member (170, 170') has a proximal portion (186, 186') that has a proximal slope.
  9. The device of any one of claims 3-8, wherein the channel (182, 182') of the second jaw member (170, 170') has a distal portion (184, 184') with a first width and a proximal portion (186, 186') with a second width, wherein the first width is greater than the second width.
  10. The device of any one of the preceding claims, wherein the first jaw member (150, 150') has a channel (160, 160') configured to receive the outer surface (220) of the first leg member (202).
  11. The device of any one of the preceding claims, wherein the first jaw member (150, 150') includes at least one tooth (164) configured to engage the outer surface (220) of the first leg member (202).
  12. The device of any one of the preceding claims, wherein at least one of the first jaw member (150, 150') and the second jaw member (170, 170') has an aperture (162, 162', 190') to allow visualization of the surgical clip (200).
  13. The device of any one of the preceding claims, wherein the at least one engagement member (166') includes first and second engagement members configured to receive therebetween a portion of the surgical clip (200).
  14. The device of claim 13, wherein each of the first and second engagement members (166') has a first portion (167') extending downwardly from an inner surface (158') of the first jaw member (150, 150') in a cantilever configuration toward the second jaw member (170, 170').
  15. The device of any one of the preceding claims, further including a proximal recess (142') formed between the first jaw member (150, 150') and the second jaw member (170, 170') configured to receive a hinge member (206) of the surgical clip (200).

Description

Priority This patent application claims priority to U.S. Provisional Patent Application No. 63/185,920 filed on May 7, 2021, the entire disclosure of which is expressly incorporated herein. Technical Field The present disclosure relates generally to devices and methods for unlatching and/or extracting a clip, and more particularly to devices and methods for unlatching and/or extracting a surgical clip from tissue. Background Ligation of tissue (e.g., blood vessels, lymph nodes, nerves, cystic ducts, and cardiac tissue) is a common practice for many surgical procedures. This may be performed by closing a vessel with a surgical clip or by suturing the vessel with the surgical thread. The use of surgical thread requires complex manipulations of a needle and surgical thread to form knots required to secure the vessel. Such complex manipulations are time consuming and difficult to perform, particularly in endoscopic surgical procedures characterized by limited space and/or visibility. In contrast, surgical clips can be applied quickly in a temporary or permanent manner. Accordingly, the use of surgical clips in endoscopic and open surgical procedures has grown dramatically. Overview The present inventors recognize that there is a need for improvements to address inefficiencies of current devices for unlatching and/or extracting surgical clips. Current devices are often specifically designed to unlatch certain designs of clips and often do not work with clips having curved leg members and/or clips having a larger radius of curvature. The current unlatching devices also have difficulty in removing or extracting the clip from an implant site of a body without it being compressed back into its closed configuration and relatching onto the tissue. Furthermore, the current unlatching devices need additional instruments to remove or extract the surgical clip. One aspect of the present invention is directed to a device for unlatching a clip from a latched configuration, the clip comprising first and second leg members, the first leg member having a hook member and the second leg member having a tip member restrained by the hook member in the latched configuration. The device may include: a first jaw member configured to press on an outer surface of the first leg member to release the clip from the latched configuration; and a second jaw member having a wall configured to engage the hook member and a channel configured to receive the tip member when unrestrained by the hook member. In some embodiments, the first jaw member has a length that is shorter than a length of the second jaw member. In some embodiments, at least a portion of the channel is open on lateral sides. In some embodiments, the wall has a groove configured to receive the hook member, wherein the groove has a distal slope configured to deflect the hook member. In some embodiments, the first jaw member has a channel configured to receive the outer surface of the first leg member. In some embodiments, the first jaw member includes at least one tooth configured to engage the outer surface of the first leg member. In some embodiments, the channel of the second jaw member has a distal portion that has a distal slope. In some embodiments, the channel of the second jaw member has a proximal portion that has a proximal slope. In some embodiments, the distal portion of the channel of the second jaw member has a first width that is greater than a second width of the proximal portion of the channel of the second jaw member. In some embodiments, at least one of the first jaw member and the second jaw member has an aperture to allow visualization of the surgical clip. In some embodiments, the first jaw member has at least one engagement member configured to secure the clip to the device for extraction after unlatching. In some embodiments, the at least one engagement member include first and second engagement members configured to receive a portion of the clip therebetween. In some embodiments, the first and second engagement member include first and second hook members extending inwardly towards each other. In some embodiments, the device includes a proximal recess formed between the first jaw member and the second jaw member configured to receive a hinge member of the clip. Another aspect of the present invention is directed to the device for unlatching a clip from a latched configuration. The device may include the first jaw member configured to press on the outer surface of the first leg member to release the clip from the latched configuration; and the second jaw member configured to engage the hook member, wherein the first jaw member may include at least one engagement member configured to secure the surgical clip to the device for extraction after unlatching. In some embodiments, the at least one engagement member include first and second engagement members configured to receive a portion of the clip therebetween. In some embodiments, the first and second engag