Tissue ligating device

Patent metadata

Field	Value
Publication number	US-10478176-B2
Application number	US-201515314382-A
Country	US
Kind code	B2
Filing date	May 27, 2015
Priority date	May 27, 2014
Publication date	Nov 19, 2019
Grant date	Nov 19, 2019

Abstract

A tissue ligating device comprises a first fixation part to which a base end part of a suture thread is fixed and a second fixation part configured to allow insertion of the suture thread therethrough and allow to be crimped so as to newly fix a part of the suture thread, and thereby to define a loop starting from the base end part, in a state after ligation of tissue is performed. The second fixation part includes a back side wall part, a front side wall part, and a curved wall part turning back from the back side wall part to the front side wall part. An end part of the front side wall part far from the curved wall part is inclined or curved towards a front side.

First claim

The invention claimed is:

1. A tissue ligating device used for ligating tissue, comprising:
a first fixation part configured to allow a base end part of a suture thread to be fixed thereto; and
a second fixation part configured to allow insertion of the suture thread therethrough and allow to be crimped so as to newly fix a part of the suture thread, and thereby to define a loop starting from the base end part, in a state after ligation of tissue is performed,
wherein:
the second fixation part includes a back side wall part, a front side wall part, and a curved wall part turning back from the back side wall part to the front side wall part,
the back side wall part is longer than the front side wall part, and
a first part of the back side wall part farther from the curved wall part than an end part of the front side wall part far from the curved wall part has a rising surface that extends straightly towards the front side wall part and an inclined surface continuing to the rising surface and inclined or curved away from the rising surface, the inclined surface being farther away from the curved wall part than the rising surface.

2. The tissue ligating device according to claim 1 , wherein:
a second part of the back side wall part closer to the curved wall part than the rising surface extends straightly in a plan view, and
the inclined surface of the back side wall part is inclined with respect to the second part of the back side wall part by an angle in a range of 10 to 80 degrees.

3. The tissue ligating device according to claim 1 , wherein:
back side wall part includes a curved surface, such that it has an arc-like cross section,
a second part of the back side wall part closer to the curved wall part than the rising surface extends straightly in a plan view, and
a curvature radius of the arc-like cross section of the curved surface of the back side wall part is in a range of 0.05 to 2.0 mm.

4. The tissue ligating device according to claim 1 , further comprising a third fixation part configured to allow insertion of the suture thread therethrough and allow to be crimped so as to newly fix a part of the suture thread, and thereby to define a loop starting from the base end part, in a state after ligation of tissue is performed,
wherein:
the third fixation part includes a symmetrical front side wall part that is symmetrical to the front side wall part of the second fixation part with respect to the back side wall part of the second fixation part and a symmetrical curved wall part turning back from the back side wall part to the symmetrical front side wall part,
the back side wall part is longer than the symmetrical front side wall part, and
a part of the back side wall part farther from the symmetrical curved wall part than an end part of the symmetrical front side wall part far from the symmetrical curved wall part has a surface inclined or curved towards a back side.

5. The tissue ligating device according to claim 1 , wherein the first fixation part is configured to allow a part of the suture thread to be fixed thereto as the base end part through insertion of the suture thread and crimping in a state before ligation of tissue is performed.

6. The tissue ligating device according to claim 1 , further comprising a suture thread attached to the first fixation part.

7. The tissue ligating device according to claim 6 , wherein one end of the suture thread is provided with a suture needle.

8. The tissue ligating device according to claim 1 , wherein:
a second part of the back side wall part closer to the curved wall part than the rising surface extends straightly in a first direction, in a plan view, and
the rising surface extends from an end of the second part in a second direction which is substantially perpendicular to the first direction, in the plan view.

9. A tissue ligating device comprising:
a first fixation part having a space configured to allow insertion of a suture thread therethrough and configured to be crimped so as to fix a base part of the suture thread;
a second fixation part having a space configured to allow insertion of the suture thread therethrough and configured to be crimped so as to fix another part of the suture thread; and
a third fixation part having a space configured to allow insertion of the suture thread therethrough and configured to be crimped so as to fix yet another part of the suture thread;
wherein:
the first fixation part comprises a first part of a back side wall part, the back side wall part extending along a central axis extending in a first direction;
the second fixation part comprises a second part of the back side wall part,
a front side wall part, and a curved wall part turning back from the back side wall part to the front side wall part;
the third fixation part comprises the second part of the back side wall part,
a front side wall part, and a curved wall part turning back from the back side wall part to the front side wall part;
the second part of the back side wall part has a smaller width than the first part of the back side wall part measured in a second direction perpendicular to the first direction;
the first part of the back side wall part has a first surface extending in the second direction, and the second part of the back side wall part is connected to the first surface to define rising surfaces rising from side surfaces of the second part of the back side wall part; and
the first part of the back side wall part has side surfaces continuing to the rising surfaces, wherein the side surfaces of the first part of the back side wall part incline or curve away from the central axis of the back side wall part as the side surfaces of the first part of the back side wall part extend away from the rising surfaces.

10. The tissue ligating device according to claim 9 , wherein said tissue ligating device is symmetric with respect to the central axis of the back side wall part.

Assignees

• Univ Tokyo

Inventors

• Ono Minoru
• Sakuma Ichiro

Classifications

• A61B17/0487 Primary

  Suture clamps, clips or locks, e.g. for replacing suture knots; Instruments for applying or removing suture clamps, clips or locks (suture anchors A61B17/0401; wound clamps or clips A61B17/08; ligaturing clamps or clips A61B17/122) · CPC title

• A61B2017/0417

  T-fasteners · CPC title

• A61B2017/0414

  having a suture-receiving opening, e.g. lateral opening · CPC title

• A61B17/0483

  Hand-held instruments for holding sutures (A61B17/0469 takes precedence; other holders for needles or sutures A61B17/06061; surgical forceps A61B17/28; surgical pincettes A61B17/30) · CPC title

• A61B17/0482

  Needle or suture guides (guides for drills, pins or wire A61B17/17; guides for puncturing needles A61B17/3403) · CPC title