Medical instrument

Patent metadata

Field	Value
Publication number	US-2017246431-A1
Application number	US-201715595268-A
Country	US
Kind code	A1
Filing date	May 15, 2017
Priority date	Dec 25, 2014
Publication date	Aug 31, 2017
Grant date	—

Abstract

A medical instrument, which is capable of holding a wire, includes: a sheath which has a center axis in a longitudinal direction from a distal end toward a proximal end thereof and includes in a distal end surface of the distal end a first contact area capable of being in contact with the wire and a second contact area coming in contact with the wire and provided on a proximal end side beyond the distal end with respect to the first contact area; and a holding portion which is advanceable and retractable in a lumen of the sheath and is retracted into the lumen of the sheath so that the wire is pressed to the first contact area and the second contact area and the holding portion holds the wire.

First claim

What is claimed is:

1 . A medical instrument which is capable of holding a wire, comprising:
a sheath which has a center axis in a longitudinal direction from a distal end thereof toward a proximal end thereof and includes in a distal end surface of the distal end a first contact area capable of being in contact with the wire and a second contact area coming in contact with the wire and provided on a proximal end side beyond the distal end with respect to the first contact area; and a holding portion which is advanceable and retractable in a lumen of the sheath and is retracted into the lumen of the sheath so that the wire is pressed to the first and second contact areas and the holding portion holds the wire, wherein an inclined surface which is inclined with respect to the center axis is formed at the distal end of the sheath, and at least one of the first contact area and the second contact area is provided at the inclined surface.

2 . The medical instrument according to claim 1 , wherein the holding portion is capable of holding the wire on a straight line connecting the first contact area and the second contact area when the sheath is seen from a center axis direction thereof.

3 . The medical instrument according to claim 1 , wherein the holding portion is a two-legged forceps having one pair of grasping portions of which distal ends are disposed to be spaced apart from each other.

4 . The medical instrument according to claim 1 , wherein the holding portion is a hook portion in which a distal end portion of the holding portion is capable of being hooked with and holding the wire.

5 . A medical instrument which is capable of holding a wire, comprising:
a sheath which has a center axis in a longitudinal direction from a distal end thereof toward a proximal end thereof and includes in a distal end surface of the distal end a first contact area capable of being in contact with the wire and a second contact area coming in contact with the wire and provided on a proximal end side beyond the distal end with respect to the first contact area; and a holding portion which is advanceable and retractable in a lumen of the sheath and is retracted into the lumen of the sheath so that the wire is pressed to the first contact area and the second contact area and the holding portion holds the wire, wherein a cut-out portion which is cut out along the center axis is formed in the distal end of the sheath, and at least one of the first contact area and the second contact area is provided at a bottom surface of the cut-out portion.

6 . The medical instrument according to claim 5 , wherein
the first contact area is provided at the distal end surface of the sheath, and the second contact area is provided at the bottom surface of the cut-out portion.

7 . The medical instrument according to claim 5 , wherein the holding portion has an annular portion having a slit portion in which the wire is capable of being inserted, and a plate-shaped portion which extends in a direction of the center axis and is connected to the annular portion.

8 . A medical instrument which is capable of holding a wire, comprising:
a sheath which has a center axis in a longitudinal direction from a distal end thereof toward a proximal end thereof and includes in a distal end surface of the distal end a first contact area capable of being in contact with the wire and a second contact area coming in contact with the wire and provided on a proximal end side beyond the distal end with respect to the first contact area; a holding portion which is advanceable and retractable in a lumen of the sheath and is retracted into the lumen of the sheath so that the wire is pressed to the first contact area and the second contact area and the holding portion holds the wire; and a lumen which is formed along the lumen of the sheath and is different from the lumen of the sheath.

Assignees

• Olympus Corp

Inventors

• Yokota Takuo
• Sato Masatoshi
• Matsunaga Rei

Classifications

• A61B2017/00349

  Needle-like instruments having hook or barb-like gripping means, e.g. for grasping suture or tissue (A61B17/06066 takes precedence) · CPC title

• A61M25/09041 Primary

  Mechanisms for insertion of guide wires · CPC title

• A61M25/0172

  Exchanging a guidewire while keeping the catheter in place · CPC title

• A61B17/28

  Surgical forceps (biopsy forceps A61B10/06; {for holding suture needles or materials A61B17/0483; for removing or smashing calculi A61B17/221; surgical scissors A61B17/3201;} obstetrical forceps A61B17/44) · CPC title

• A61B17/29

  Forceps for use in minimally invasive surgery · CPC title