IP Library › Granted Patent US 12661101
Granted Patent B2
US 12661101 · App. 18/283,351 · Granted Jun 23, 2026

Retractor and holder

Inventor: Shigeyuki Ozaki (Tokyo, JP)
A61B17/0218A61B2017/00473A61B2017/00783A61B2017/0414A61B2017/0464A61B2017/22082
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Quick Facts
Patent No.
US 12661101
App. No.
18/283,351
Granted
Jun 23, 2026
Kind
B2
Abstract

A retractor includes plural holes penetrating from a front surface to a back surface of the retractor. The retractor is inserted into an aorta. When one end side of a thread that penetrates from the front surface to the back surface through one of the holes and penetrates from an inside to an outside of the aorta, and the other end side of the thread that penetrates from the front surface to the back surface through a hole of the plural holes different from the hole through which the one end side penetrates and penetrates from the inside to the outside of the aorta are pulled, the aorta is widened in a radial direction.

Claims (21)

1 . A retractor that is a plate-shaped member, the retractor comprising:

a plurality of holes penetrating from a front surface to a back surface,

wherein:

the retractor is configured to be inserted into an aorta,

when one end side of a thread that penetrates from the front surface to the back surface through one of the plurality of holes and is configured to penetrates from an inside to an outside of the aorta, and the other end side of the thread that penetrates from the front surface to the back surface through a hole of the plurality of holes different from the hole through which the one end side penetrates and is configured to penetrates from the inside to the outside of the aorta are pulled, the aorta is widened in a radial direction,

the plate-shaped member has a portion configured to be warped in a direction opposite to a recessed direction toward one end in a longitudinal direction, and

the plurality of holes includes a plurality of first holes that penetrates from the front surface to the back surface and through which the thread passes, and a second hole whose diameter is larger than a diameter of each of the plurality of first holes, is circular or oval in shape, and is configured to receive a cannula for injecting a myocardial protective liquid.

2 . The retractor according to claim 1 ,

wherein the retractor is used for aortic valvuloplasty, and is configured to be inserted into a region in the aorta including a valsalva sinus.

3 . The retractor according to claim 1 ,

wherein a center portion in a lateral direction of the retractor is curved so as to be recessed.

4 . The retractor according to claim 1 , further comprising:

a passage formed inside to suck blood;

a hole for taking the blood into the passage; and

a connecting portion for connecting a tube configured to be connected to the passage, protruding from a side surface of the plate-shaped member, and sucking the blood in the passage.

5 . The retractor according to claim 1 , further comprising:

a third hole through which the thread passes for pulling the retractor from an outside a chest wall.

6 . The retractor according to claim 1 ,

wherein one end portion of the retractor in a longitudinal direction has a hook shape.

7 . The retractor according to claim 1 , further comprising:

a grip portion.