JP2016193065A5

JP2016193065A5 -

Info

Publication number: JP2016193065A5
Application number: JP2015074491A
Authority: JP
Filing date: 2015-03-31
Publication date: 2017-11-30
Anticipated expiration: 2035-03-31

Claims

A base part;
A first arm mechanism and a second arm mechanism provided in the base portion and configured to be relatively movable;
A first holding member provided in the first arm mechanism and detachably holding a first position of the body to be ligated;
A second holding member provided in the second arm mechanism and detachably holding the first position of the body to be ligated;
A third holding member provided in the first arm mechanism and detachably holding a second position of the body to be ligated;
A fourth holding member provided in the second arm mechanism and detachably holding a second position of the body to be ligated;
Loop forming means for supporting the second position of the body to be ligated and forming a loop of the body to be ligated at which two positions between the first position and the second position of the body to be ligated intersect by rotation. When,
The loop forming means in a state in which the first arm mechanism and the second arm mechanism are separated from each other and the first position and the second position of the body to be ligated are held by the first holding member and the fourth holding member. A first loop forming operation for forming a loop of the body to be ligated, an arm approaching operation for causing the first arm mechanism and the second arm mechanism to approach each other, and a first position and a second position of the body to be ligated. A first switching operation for switching from a state held by the first holding member and the fourth holding member to a state held by the second holding member and the third holding member; and a first position and a second position of the body to be ligated. The first position is moved to the loop by sequentially executing a first arm separation operation for separating the first arm mechanism and the second arm mechanism from each other while being held by the second holding member and the third holding member. Wherein by umbrella to form a knot to be ligated body, and an operation portion provided on the base portion, a knot forming device, which comprises.

The loop forming means is provided in the first arm mechanism and the second arm mechanism,
The operation unit is
The loop forming means in a state where the first arm mechanism and the second arm mechanism are separated from each other and the first position and the second position of the body to be ligated are held by the second holding member and the third holding member. A second loop forming operation for forming a loop of the body to be ligated, an arm approaching operation for bringing the first arm mechanism and the second arm mechanism closer to each other, and a first position and a second position of the body to be ligated. A second switching operation for switching from a state held by the second holding member and the third holding member to a state held by the first holding member and the fourth holding member; and a first position and a second position of the body to be ligated. The loop is moved to the first position by sequentially executing a second arm separation operation for separating the first arm mechanism and the second arm mechanism from each other while being held by the first holding member and the fourth holding member. Knot forming apparatus according to claim 1, characterized in that to degrees pass.

The knot allows the first position of the body to be ligated to pass through the loop relatively from a position farther than the first position of two positions intersecting the loop to a position closer to the first position. Is formed by
The operation unit is configured to form the knot a plurality of times, and at any knot of the plurality of knots, the loop forming unit is configured to pass the previously formed loop and the first position. The knot forming apparatus according to claim 1 or 2, wherein a loop wound around the trajectory in a reverse direction is formed.

The knot allows the first position of the body to be ligated to pass through the loop relatively from a position farther than the first position of two positions intersecting the loop to a position closer to the first position. Is formed by
The operation unit forms the knot a plurality of times, and at any knot of the plurality of knots, the loop formation means passes the first position with the previously formed loop. The knot forming apparatus according to claim 1 or 2, wherein loops wound around the predetermined locus in the same direction are formed.

The knot forming device according to any one of claims 1 to 4, wherein the loop forming unit forms the loop once.

The knot forming device according to claim 5 , wherein the loop forming means forms the loop twice.

The loop forming means forms the loop twice around a virtual axis that is an axis that intersects the projection plane of the loop in the first loop formation, and around the virtual axis in the second loop formation. The knot forming apparatus according to claim 3 or 4, wherein the loop is formed once.

The loop forming means includes a loop forming portion having a radius larger than a distance from the rotation center to the first holding member, and a body to be ligated having a radius smaller than a distance from the rotation center to the second holding member. Having a passage part,
The first position passes through a region surrounded by a body to be ligated in which a loop is formed around the rotation center of the loop forming means and the body to be ligated, and the first holding member and the second holding member. The knot forming device according to claim 1, wherein the knot forming device is passed between

The loop forming means includes a loop forming portion having a radius larger than a distance from the rotation center to the second holding member, and a position farther from the second arm mechanism along the rotation axis than the loop forming portion. A loop holding part having a larger radius than the loop forming part,
Knot forming apparatus according to claim 1 to 7 the side close to the along the rotation axis than the loop forming portion second arm mechanism, characterized in that it has a radius of less than the loop forming portion.

The loop forming means supports the second position of the body to be ligated so as to be slidable along the longitudinal direction of the body to be ligated,
The knot forming device according to claim 1, wherein the operation unit pulls a pulling position located farther from the first position than the second position of the body to be ligated to tighten the knot.

The knot forming device according to claim 1, wherein the loop forming means is capable of moving along the second arm mechanism in a direction in which the distance from the second holding member approaches.

The knot forming device according to claim 1, wherein the loop forming unit can be deformed along a direction in which a distance from the second arm mechanism approaches.

The loop forming means includes a first support portion that is separated from the second position of the body to be ligated to the first position side, and a second support that is separated from the second position of the body to be ligated to the tension position side. The second position of the body to be ligated is supported by the part,
The operation portion pulls the tension position when the second support portion is closer to the base portion along the first arm mechanism or the second arm mechanism than the first support shaft, thereby pulling the tension position. The knot forming device according to claim 10, wherein the knot forming device is tightened.

The knot forming device according to claim 10, wherein the pulling position of the body to be ligated is provided at a position at which the operator can pull the operation member directly.