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US 8,801,666 B2Granted
Device for reducing pressure variations in an aspiration branch, and surgical system
AssigneeCarl Zeiss Meditec AG
InventorsChristoph Kuebler, Martin Kraus, Michael Eichler, Tobias Maier
Life of this patent
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Abstract
The invention relates to a device for reducing pressure variations in a fluid flowing in an aspiration branch of a surgical system, which pressure variations are generated by a pump that delivers in a non-continuous manner in the active operating state, with a diffuser arrangement which is arranged, in the aspiration branch, upstream of the pump in the direction of flow of the fluid. The invention also relates to a surgical system, in particular an ophthalmic microsurgical system for lens surgery.
Claims17
A device, comprising:
- a diffuser arrangement configured to be arranged in an aspiration branch of a surgical system so that the diffuser arrangement reduces pressure variations of a fluid flowing in the aspiration branch,
- wherein:
- the pressure variations are generated by a pump delivering the fluid into the aspiration branch in a discontinuous fashion;
- the device is upstream of the pump in a flow direction of the fluid in the aspiration branch;
- the diffuser arrangement comprises at least two diffusers;
- the diffuser arrangement has a ratio between its maximum internal dimension and its minimum internal dimension;
- the ratio is greater than or equal to 2;
- and
- when the diffuser arrangement is connected to the aspiration branch, the at least two diffusers are arranged in parallel along the flow direction.
6 more elements
A device, comprising:
- a diffuser arrangement configured to be arranged in an aspiration branch of a surgical system so that the diffuser arrangement reduces pressure variations of a fluid flowing in the aspiration branch,
- wherein:
- the pressure variations are generated by a pump delivering the fluid into the aspiration branch in a discontinuous fashion;
- the device is upstream of the pump in a flow direction of the fluid in the aspiration branch;
- the diffuser arrangement comprises at least two diffusers;
- the diffuser arrangement has a ratio between its maximum internal dimension and its minimum internal dimension;
- the ratio is greater than or equal to 2;
- and
- when the diffuser arrangement is connected to the aspiration branch, the at least two diffusers are arranged in series along the flow direction.
6 more elements
A device, comprising:
- a diffuser arrangement configured to be arranged in an aspiration branch of a surgical system so that the diffuser arrangement reduces pressure variations of a fluid flowing in the aspiration branch,
- wherein:
- the pressure variations are generated by a pump delivering the fluid into the aspiration branch in a discontinuous fashion;
- the device is upstream of the pump in a flow direction of the fluid in the aspiration branch;
- the diffuser arrangement comprises at least two diffusers;
- the diffuser arrangement has a ratio between its maximum internal dimension and its minimum internal dimension;
- the ratio is greater than or equal to 2;
- the at least two diffusers comprise first and second diffusers;
- when the diffuser arrangement is connected to the aspiration branch, the first diffuser is upstream of the second diffuser in the flow direction;
- the second diffuser has a wall defining a first opening and a second opening;
- the second opening of the second diffuser is separated from the first opening of the second diffuser by the wall;
- and
- when the diffuser arrangement is connected to the aspiration branch, the first opening of the second diffuser is upstream of the second opening of the second diffuser in the flow direction;
- and
- the first opening of the first diffuser is smaller than the first opening of the second diffuser.
12 more elements
A device, comprising:
- a diffuser arrangement configured to be arranged in an aspiration branch of a surgical system so that the diffuser arrangement reduces pressure variations of a fluid flowing in the aspiration branch,
- wherein:
- the pressure variations are generated by a pump delivering the fluid into the aspiration branch in a discontinuous fashion;
- the device is upstream of the pump in a flow direction of the fluid in the aspiration branch;
- the diffuser arrangement comprises at least two diffusers;
- the diffuser arrangement has a ratio between its maximum internal dimension and its minimum internal dimension;
- the ratio is greater than or equal to 2;
- the at least two diffusers comprise first and second diffusers;
- when the diffuser arrangement is connected to the aspiration branch, the first diffuser is upstream of the second diffuser in the flow direction;
- the second diffuser has a wall defining a first opening and a second opening;
- the second opening of the second diffuser is separated from the first opening of the second diffuser by the wall;
- and
- when the diffuser arrangement is connected to the aspiration branch, the first opening of the second diffuser is upstream of the second opening of the second diffuser in the flow direction;
- and
- the first opening of the first diffuser is larger than the second opening of the second diffuser.
12 more elements
Dependencies are inferred from the claim text.