COMPRESSION CONTROL DEVICE AND COMPRESSION CONTROL METHOD

• US 20160135693A1
• Filed: 11/12/2015
• Published: 05/19/2016
• Est. Priority Date: 11/19/2014
• Status: Active Application

• Current Assignee: Nihon Kohden Corporation
• Original Assignee: Nihon Kohden Corporation
• Inventors: Tanaka, Rie
• Application Number:
  US14/939,560
• Publication Number:
  US 20160135693A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 17/1355 Automated control means therefor
• CPC Class Codes: A61B 2017/00199 with a console, e.g. a control panel with a display
• CPC Class Codes: A61B 5/02125 of pulse wave propagation time
• CPC Class Codes: A61B 5/0225 the pressure being controlled by electric signals, e.g. derived from Korotkoff sounds
• CPC Class Codes: A61B 5/02255 the pressure being controlled by plethysmographic signals, e.g. derived from optical sensors

Abstract

A compression control device includes a cuff that is adapted to be wrapped to a first region of a living body, a pressure controller that controls an application pressure to be applied to the first region by the cuff, and a blood pressure obtaining section that obtains a blood pressure value from the living body. The pressure controller controls the application pressure based on the blood pressure value obtained by the blood pressure obtaining section in a state where a prescribed pressure for causing an ischemic state in a part from the first region to a periphery is applied to the first region by the cuff.

Claims

1. A compression control device comprising:

a cuff adapted to be wrapped around a first region of a living body;

a pressure controller configured to control an application pressure to be applied to the first region by the cuff; and

a blood pressure obtaining section configured to obtain a blood pressure value from the living body,

wherein the pressure controller controls the application pressure based on the blood pressure value obtained by the blood pressure obtaining section in a state where a prescribed pressure for causing an ischemic state in a part from the first region to a periphery is applied to the first region by the cuff.

2. The compression control device according to claim 1,

wherein the blood pressure obtaining section includes:

a pulse wave obtaining section attached to a second region of the living body different from the first region and capable of measuring a pulse wave in the second region;

an electrocardiogram obtaining section capable of measuring an electrocardiogram of the living body; and

a calculating section obtaining a pulse wave transit time based on the pulse wave and the electrocardiogram, and calculating an estimated blood pressure value based on the pulse wave transit time, and

the pressure controller controls the application pressure based on the estimated blood pressure value in a state where the prescribed pressure for causing the ischemic state in the part from the first region to the periphery is applied to the first region by the cuff.

3. The compression control device according to claim 1,

wherein the blood pressure obtaining section includes a catheter capable of obtaining an invasive blood pressure value from the living body, and

the pressure controller controls the application pressure based on the invasive blood pressure value in a state where the prescribed pressure for causing the ischemic state in the part from the first region to the periphery is applied to the first region by the cuff.

4. The compression control device according to claim 1, wherein the pressure controller controls the application pressure based on a mean value of blood pressure values obtained by the blood pressure obtaining section during a prescribed time period, in a state where the prescribed pressure for causing the ischemic state in the part from the first region to the periphery is applied to the first region by the cuff.

5. The compression control device according to claim 2, wherein the pressure controller controls the application pressure based on a mean value of blood pressure values obtained by the blood pressure obtaining section during a prescribed time period, in a state where the prescribed pressure for causing the ischemic state in the part from the first region to the periphery is applied to the first region by the cuff.

6. The compression control device according to claim 3, wherein the pressure controller controls the application pressure based on a mean value of blood pressure values obtained by the blood pressure obtaining section during a prescribed time period, in a state where the prescribed pressure for causing the ischemic state in the part from the first region to the periphery is applied to the first region by the cuff.

7. A compression control method for a cuff to be employed in a procedure for causing an ischemic state in a part of a living body, comprising:

setting an initial target value of an application pressure to be applied by the cuff wrapped to a first region of the living body;

causing the ischemic state in a part from the first region to a periphery by controlling the application pressure to be applied by the cuff based on the initial target value; and

controlling the application pressure, in such a manner that a prescribed relationship is retained between the blood pressure value and the application pressure, based on a blood pressure value obtained from the living body while the part is in the ischemic state.

8. The compression control method according to claim 7, wherein the procedure is remote ischemic preconditioning.

9. The compression control method according to claim 7, wherein the procedure is a procedure for reducing an amount of bleeding in a surgical field during a surgery.