Anastomosing instrument

• US 20040249392A1
• Filed: 06/03/2004
• Published: 12/09/2004
• Est. Priority Date: 06/06/2003
• Status: Active Grant

• Current Assignee: Olympus Corporation
• Original Assignee: Olympus Corporation
• Inventors: Mikkaichi, Takayasu, Suzuki, Keita
• Granted Patent: US 7,534,248 B2
• Time in Patent Office: Days
• US Class Current: 606/142
• CPC Class Codes: A61B 17/0469 Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery
• CPC Class Codes: A61B 17/0487 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 Class Codes: A61B 17/11 for performing anastomosis; Buttons for anastomosis
• CPC Class Codes: A61B 2017/00367 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 Class Codes: A61B 2017/0404 Buttons
• CPC Class Codes: A61B 2017/0417 T-fasteners
• CPC Class Codes: A61B 2017/0454 the anchor being crimped or clamped on the suture
• CPC Class Codes: A61B 2017/0488 Instruments for applying suture clamps, clips or locks
• CPC Class Codes: A61B 2017/0496 for tensioning sutures
• CPC Class Codes: A61B 2017/06052 Needle-suture combinations in which a suture is extending inside a hollow tubular needle, e.g. over the entire length of the needle

Abstract

The present invention aims to provide an anastomosing instrument that can anastomose biological tissue with surety.

This anastomosing instrument has an inserted portion, which is inserted into a body cavity and is provided with a puncture needle, and a hand-operated portion, which the surgeon operates from outside the body. This anastomosing instrument is designed as follows. Namely, an anchoring member for anchoring in biological tissue and a locking member for fastening on a suture material are housed inside the puncture needle. A first pushing member, for pushing the locking member out from the puncture needle ahead of the anchoring member, and a second pushing member, for pushing the anchoring member out from the puncture needle are passed through from the hand-operated portion.

Claims

1. An anastomosing instrument in which an anchoring member, that is attached to one end of a suture material and is for anchoring in a biological tissue, and a locking member, through which the other end of said suture material is inserted and that comes into contact with the anastomosed biological tissue to function to prevent pull-out of the suture, are housed inside a puncture needle, wherein, once said puncture needle has passed through the biological tissues, said suture material is passed through the biological tissues as said anchoring member and said locking member are pushed out in accordance with operations from a hand held portion, thereby anastomosing said biological tissues;

said anastomosing instrument wherein

said locking member is disposed in the internal cavity of said puncture needle so that the surface of said locking member that is in contact with said biological tissue will be parallel to the axial direction of said puncture needle; and

a first pushing member that pushes out said locking member from said puncture needle and a second pushing member that is housed inside said first pushing member and pushes out said anchoring member from said puncture needle are provided.

2. An anastomosing instrument according to claim 1, wherein said locking member and said anchoring member are disposed in this order from the end of said puncture needle, lying along the longitudinal direction of said puncture needle.

3. An anastomosing instrument according to claim 1, wherein said locking member has two bent pieces that are inclined with respect to its base so as be opposite one another, said bent pieces being designed such that said suture material that was passed between the ends thereof is fastened when a force is applied so as to close the space between the opposing said ends, and the fastening of said suture material is released when a force is applied so as to widen the space between the opposing said ends.

4. An anastomosing instrument according to claim 1, wherein a flow introducing portion (25) on the hand-held side for supplying flow to the puncture needle is provided, and gas is discharged from the end of said puncture needle.