Medical treatment tool

• US 20060259043A1
• Filed: 04/06/2006
• Published: 11/16/2006
• Est. Priority Date: 10/08/2003
• Status: Active Grant

• Current Assignee: Olympus Corporation
• Original Assignee: Olympus Corporation
• Inventors: Miyamoto, Satoshi, Onishi, Norio
• Granted Patent: US 8,118,819 B2
• Time in Patent Office: Days
• US Class Current: 606/139
• CPC Class Codes: A61B 17/0469 Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery
• CPC Class Codes: A61B 17/12013 for use in minimally invasive surgery, e.g. endoscopic surgery
• CPC Class Codes: A61B 2017/0417 T-fasteners
• CPC Class Codes: A61B 2017/0477 with pre-tied sutures
• CPC Class Codes: A61B 2017/0496 for tensioning sutures

Abstract

A medical treatment tool comprises: a flexible wire; a first wire holding member which holds the wire; a second wire holding member capable of holding the wire between itself and the first wire holding member; a first sheath which is provided in contact with a proximal side of the second wire holding member; a second sheath which is provided in a back-and-forth movable manner with respect to the first sheath; and a sheath operation portion which operates the second sheath. The first wire holding member and the second sheath have a connection device for connecting them to each other; the first wire holding member and the second wire holding member have a latching device which latches them to each other when holding the wire there between, and a cutting device which cuts the wire; and the second wire holding member has a connection releasing device which releases the connection of the connection device, when latched by the first wire holding member.

Claims

1. A medical treatment tool, comprising:

a flexible wire which performs a predetermined treatment on a biological tissue;

a wire operation portion which operates said wire back-and-forth;

a first wire holding member which is provided in a back-and-forth movable manner with respect to said wire, to hold the wire;

a second wire holding member which is provided on a proximal side of said first wire holding member, in a back-and-forth movable manner in an axial direction, and is capable of holding said wire between itself and the first wire holding member;

a flexible first sheath which is provided in contact with a proximal side of said second wire holding member;

a flexible second sheath which is provided to cover said first sheath, in a back-and-forth movable manner with respect to the first sheath; and

a sheath operation which operates said second sheath back-and-forth;

wherein

said first wire holding member and said second sheath have a connection device which connects them to each other;

said first wire holding member and said second wire holding member have a latching device which latches them to each other when holding said wire there between, and a cutting device which cuts the wire at a proximal side from said holding position; and

said second wire holding member has a connection releasing device which releases the connection of said connection device, when latched by the first wire holding member.

2. A medical treatment tool according to claim 1, wherein said cutting device cuts said wire inside of said first wire holding member.

6. A medical treatment tool according to claim 1, wherein:

said connection device comprises a project which is projected from said second sheath in a distal direction, and has a catch projected toward the inside of the second sheath, on the distal end, and latch hole which is provided in the periphery of said first connection member, and is capable of latching with said catch; and

said connection releasing device is a coupling catch which is engaged into said latch hole in said latched condition, and is capable of pushing out said catch from the latch hole.

7. A medical treatment tool according to claim 6, wherein said latching device comprises said latch hole and said coupling catch.

8. A medical treatment tool according to claim 1, wherein said wire is a ligation wire which ligates a biological tissue.

9. A medical treatment tool according to claim 1, wherein said wire is a suture thread for suturing a biological tissue, and there is provided;

a drop-off preventing member connected to a distal end of said suture thread; and

a suture needle main body which detachably contains said drop-off preventing member, and has a needle portion for piercing a biological tissue, on a distal end.

3. A medical treatment tool, comprising:

a flexible wire which performs a predetermined treatment on a biological tissue;

a wire operation portion which operates said wire back-and-forth;

a first wire holding member which is provided in a back-and-forth movable manner with respect to said wire, to hold the wire;

a second wire holding member which is provided on a proximal side of said first wire holding member, in a back-and-forth movable manner in an axial direction, and which holds said wire between itself and the first wire holding member;

a flexible first sheath which is provided in contact with a proximal side of said second wire holding member;

a flexible second sheath which is provided to cover said first sheath, in a back-and-forth movable manner with respect to the first sheath;

a cutting member which is provided on a distal end of said second sheath, and has a cutting blade which cuts said wire at a proximal side from said holding position, arranged on a distal side from said wire; and

a sheath operation portion which operates said second sheath back-and-forth;

wherein

said first wire holding member and said second sheath have a connection device which connects them to each other;

said first wire holding member and said second wire holding member have a latching device which latches them to each other when holding said wire there between; and

said second wire holding member has a connection releasing device which releases the connection of said connection device, when latched by the first wire holding member.

4. A medical treatment tool according to claim 3, wherein said second wire holding member has a wire storage portion which contains a cut end of said wire after cutting, thereinside.

5. A medical treatment tool according to claim 3, wherein said cutting member is detachably provided on said second sheath.

10. A medical treatment tool according to claim 3, wherein:

said connection device comprises a project which is projected from said second sheath in a distal direction, and has a catch projected toward the inside of the second sheath, on the distal end, and latch hole which is provided in the periphery of said first connection member, and is capable of latching with said catch; and

said connection releasing device is a coupling catch which is engaged into said latch hole in said latched condition, and is capable of pushing out said catch from the latch hole.

11. A medical treatment tool according to claim 3, wherein said wire is a ligation wire which ligates a biological tissue.

12. A medical treatment tool according to claim 3, wherein said wire is a suture thread for suturing a biological tissue, and there is provided;

a drop-off preventing member connected to a distal end of said suture thread; and

a suture needle main body which detachably contains said drop-off preventing member, and has a needle portion for piercing a biological tissue, on a distal end.