JPWO2019206537A5 - - Google Patents

Claims (10)

An instrument for placement in an opening of the body, including an incision or a naturally occurring opening of the body .
Retractors, including sleeves with insertion and traction configurations,
A guard device having an insertion configuration and a deployment configuration, wherein the guard device can be moved from the insertion configuration to the deployment configuration by the retractor when the retractor moves to the traction configuration. When,
Equipped with
At least a portion of the guard device is disposed between the outer and inner surfaces of the sleeve, the guard device comprises a plurality of petals, and adjacent petals of the plurality of petals overlap in the insertion configuration. An instrument in which the amount of overlap of the adjacent petals decreases as the retractor moves from the insertion configuration to the traction configuration . 1 The equipment described in. 2. The device of claim 2, wherein the guard device is axially movable with respect to the distal retractor member and / or the proximal retractor member in motion towards the deployment configuration. The retractor
Distal member,
A proximal member , wherein the sleeve extends at least between the distal member and the proximal member.
A guide member for the proximal portion of the sleeve,
A first sleeve portion extending distally from the proximal member to the distal member, and a second sleeve portion extending proximally from the distal member to the guide member.
The device according to claim 1 , further comprising. The device according to claim 4 , wherein the guard device is located between the first sleeve portion and the second sleeve portion, and includes a mounting ring. The device of claim 5 , wherein the mounting ring is movable upwards when the sleeve is pulled upwards. Each petal of the plurality of petals has a proximal end and a distal end, and the distal end of each of the plurality of petals allows the retractor to move from the insertion configuration to the traction configuration. The device according to claim 1, which is configured to move outward in the radial direction from the longitudinal axis of the retractor. A claim that each petal of the plurality of petals comprises a proximal neck, which is configured to provide a flexion region to facilitate radial movement of the petal. The device according to 1. The device according to claim 8, wherein the guard device further includes a guard ring, and a proximal portion of the plurality of petals is connected to the guard ring. 9. The device of claim 9, wherein the guard ring is movable relative to the sleeve.