Medical system and liquid circulation system
AssigneeTerumo Kabushiki Kaisha
InventorTakashi KITAOKA
Life of this patent
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Abstract
A medical system and a liquid circulation system, which are capable of efficiently delivering the liquid to the treatment area of the brain while suppressing the fluctuations in the intracranial pressure. The medical system includes a control unit that executes control of setting a first period in which the liquid is injected into the body cavity and the liquid is not discharged from the body cavity and a second period in which the liquid is not injected into the body cavity and the liquid is discharged from the body cavity, and alternately repeating the first period and the second period to set an injection amount of the liquid in the first period to be substantially the same as a discharge amount of the liquid in the second period.
Claims20
A medical system configured to inject a liquid into a body cavity in which cerebrospinal fluid of a subject is present and discharge the liquid present in the body cavity from the body cavity, the medical system comprising:
- a control unit configured to execute control of setting:
- a first period in which the liquid is injected into the body cavity and the liquid is not discharged from the body cavity;
- and
- a second period in which the liquid is not injected into the body cavity and the liquid is discharged from the body cavity, and alternately repeating the first period and the second period to set an injection amount of the liquid in the first period to be substantially the same as a discharge amount of the liquid in the second period.
A liquid circulation system configured to circulate a liquid by injecting the liquid into a body cavity in which cerebrospinal fluid is present and discharging the liquid to the outside of the body cavity, the liquid circulation system comprising:
- an injection catheter configured to inject the liquid into the body cavity;
- a discharge catheter configured to discharge the liquid from the body cavity to the outside of the body cavity;
- a liquid delivery line connected to the injection catheter;
- a liquid discharge line connected to the discharge catheter;
- a first liquid delivery unit that is provided on the liquid delivery line and configured to move the liquid;
- a second liquid delivery unit that is provided on the liquid discharge line and configured to move the liquid;
- and
- a single control unit configured to control the first liquid delivery unit and the second liquid delivery unit.
A method for injecting a liquid into a body cavity in which cerebrospinal fluid of a subject is present and discharging the liquid present in the body cavity from the body cavity, the method comprising:
- injecting the liquid during a first period into the body cavity in which the liquid is not discharged from the body cavity;
- discharging the liquid during a second period from the body cavity in which the liquid is not injected into the body cavity;
- and
- alternately repeating the first period and the second period to set an injection amount of the liquid in the first period to be substantially the same as a discharge amount of the liquid in the second period.
Dependencies are inferred from the claim text.