Implant placement device, coupling support, and endoscopic treatment tool

Patent metadata

Field	Value
Publication number	US-9895142-B2
Application number	US-201113115445-A
Country	US
Kind code	B2
Filing date	May 25, 2011
Priority date	Nov 9, 2009
Publication date	Feb 20, 2018
Grant date	Feb 20, 2018

Abstract

An implant placement device includes a sheath; a long-axis member having an opening on a distal end side, movable along an axis, and a lumen communicating with the opening; a stylet movable in the axis and provided within the lumen to be turnable around the axis; an operating part on a proximal end side of the stylet to turn the stylet around the axis; a guide part on the proximal end side of the sheath to guide the operating part in a predetermined direction, thereby moving the sheath in the axis with respect to the stylet and turning a distal end portion of the stylet around the axis; and a coupling portion formed at the distal end of the stylet, detachably coupled with an implant, and moving in the axis and turning around the axis along with the stylet and the implant according to an operation of the operating part.

First claim

The invention claimed is:

1. An ultrasonic endoscope treatment tool provided to be fixed to an ultrasonic endoscope to perform treatment on a body tissue the ultrasonic endoscope treatment tool comprising:
an insertion part including:
a sheath having a longitudinal axis; and
a tubular member having an opening formed on a distal end side thereof, movable along the longitudinal axis, and provided with a lumen communicating with the opening; and

a main body provided at a proximal side of the insertion part, the main body including:
an operating part provided to be coupled to the sheath;
a mounting part which is provided to be coupled to the operating part and to fix the ultrasonic endoscope treatment tool to the ultrasonic endoscope;
a tubular member slider provided to advance and retract the tubular member in an axial direction of the tubular member with respect to the operating part;
a slide stopper provided to move relative to the operating part in the axial direction of the tubular member and capable of being fixed to the operating part; and
a coupling member provided to couple the tubular member slider with the slide stopper when the tubular member slider has come into contact with the slide stopper such that an advancement and a retraction of the tubular member slider with respect to the slide stopper are restricted,

wherein
the tubular member is capable of being introduced to the body tissue by being inserted through the inside of the sheath,
the slide stopper is provided on a distal side of the tubular member slider in an insertion direction of the tubular member, and
both the advancement and the retraction of the tubular member slider with respect to the operating part are restricted when the tubular member slider is coupled to the slide stopper in a state where the slider stopper is fixed to the operating part.

2. The ultrasonic endoscope treatment tool according to claim 1 ,
wherein the insertion part further includes a stylet provided within the lumen, the stylet being movable in the longitudinal axis direction within the lumen and rotatable around the longitudinal axis.

3. The ultrasonic endoscope treatment tool according to claim 2 , wherein
the sheath is rotatable around the axial direction of the tubular member in a state where the tubular member is inserted through the sheath.

4. The according to claim 3 , wherein
the stylet, the tubular member, and the sheath are rotatable integrally around the axis of the tubular member.

5. The ultrasonic endoscope treatment tool according to claim 2 , wherein
the stylet is formed from a material having superelasticity.

6. The ultrasonic endoscope treatment tool according to claim 2 , wherein
the ultrasonic endoscope treatment tool being provided to place an implant within the body tissue,
the implant has a coil-spring shape,
the implant is arranged in the tubular member in a stretched state when introduced to the body tissue,
and the ultrasonic endoscope treatment tool further includes a sheath operating part moving at least the sheath to the distal end side in the insertion direction, and moving at least the sheath to the proximal end side in the insertion direction.

7. The ultrasonic endoscope treatment tool according to claim 6 , wherein
the sheath operating part moves the sheath relative to the stylet in a direction of the longitudinal axis of the sheath when the sheath is moved to the proximal end side in the insertion direction.

8. The ultrasonic endoscope treatment tool according to claim 6 ,
wherein a movement distance by which the sheath is moved to the proximal end side by the sheath operating part is set to be shorter than a length equivalent to one round of the coil of the implant.

9. The ultrasonic endoscope treatment tool according to claim 6 ,
wherein the distance by which the sheath protrudes from the distal end of the insertion part of the ultrasonic endoscope when the sheath is moved to the proximal end side in the insertion direction by the sheath operating part is greater than the size of the external diameter of the coil of the implant.

10. The ultrasonic endoscope treatment tool according to claim 6 ,
wherein the sheath operating part moves the stylet along with the sheath when moving the sheath to the distal end side in the insertion direction.

11. The ultrasonic endoscope treatment tool according to claim 10 ,
wherein the sheath operating part moves the tubular member and the stylet along with the sheath.

12. The ultrasonic endoscope treatment tool according to claim 6 ,
wherein the sheath operating part has a stopper that fixes the axial relative positions of the sheath and the sheath operating part at a predetermined movement distance when the sheath is moved to the distal end side in the insertion direction.

13. The ultrasonic endoscope treatment tool according to claim 6 ,
wherein the sheath operating part has a stopper that fixes the axial and circumferential relative positions of the sheath and the sheath operating part at a predetermined movement distance when the sheath is moved to the proximal end side in the insertion direction.

14. The ultrasonic endoscope treatment tool according to claim 6 , wherein
the stylet is arranged inside the tubular member more proximal than the implant in an insertion direction of the tubular member, and the stylet is capable of being coupled to the implant,
the sheath is rotatable around the axial direction of the tubular member,
the operating part is coupled to the sheath operating part,
the ultrasonic endoscope treatment tool further includes a cam tube arranged coaxially with the central axis of the sheath operating part inside the sheath operating part, and coupled to the sheath such that the advance and retract operation of the sheath operating part in a direction of the central axis interlocks with the sheath, and a tilt cam formed at a portion of an outer wall portion of the cam tube and engaging with the operating part, and
the tilt cam moves in the direction of the central axis of the cam tube relative to the operating part, and rotates the sheath operating part around an axis relative to the operating part.

15. The ultrasonic endoscope treatment tool according to claim 6 ,
wherein when the stylet is seen toward the distal end side from the proximal end side in a delivery direction in which the implant is delivered from the tubular member, the stylet rotates around an axis of the stylet inside the tubular member in a direction opposite to a winding direction of the coiled form of the portion of the implant hooked to the body tissue.

16. The ultrasonic endoscope treatment tool according to claim 6 , a winding direction of the implant is opposed to a delivery direction in which the implant is delivered from the tubular member.

17. The ultrasonic endoscope treatment tool according to claim 6 , wherein
a first coupling portion is formed at a distal end of the stylet, the first coupling portion being capable of moving in the direction of the longitudinal axis and rotating around the longitudinal axis according to an operation of the operating part,
a second coupling portion is formed at a proximal end of the implant such that the second coupling portion is capable of coupling with the first coupling portion of the stylet,
the implant is capable of advancing and retracting integrally with the stylet by coupling the first coupling portion to the second coupling portion, and
the implant and the stylet are automatically separated from each other, when the implant is advanced integrally with the stylet

Assignees

• Sato Masatoshi
• Takahashi Shinji
• Hashimoto Tatsutoshi
• Murakami Kazushi
• Olympus Corp

Inventors

• Sato Masatoshi
• Takahashi Shinji
• Hashimoto Tatsutoshi
• Murakami Kazushi

Classifications

• A61B2017/06052

  Needle-suture combinations in which a suture is extending inside a hollow tubular needle, e.g. over the entire length of the needle · CPC title

• A61B17/00234 Primary

  for minimally invasive surgery (A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence) · CPC title

• A61B1/00133

  Drive units for endoscopic tools inserted through or with the endoscope · CPC title

• A61B17/068

  Surgical staplers {, e.g. containing multiple staples or clamps}({staplers containing only one staple A61B17/10; magazines or containers for staples A61B17/105;} for performing anastomosis A61B17/115; {staplers in general B25C5/00}) · CPC title

• A61B17/0644

  penetrating the tissue, deformable to closed position · CPC title