Surgical irrigation and aspiration system with dampening device
AssigneeThe Cooper Companies, Inc.
InventorRickey P. Davis
Life of this patent
Estimating the term…
Abstract
A surgical irrigation and aspiration system for aspirating fluid from a surgical site, such as the eye, including a surgical tool having irrigation and aspiration functions, and an irrigation fluid supply for providing irrigation fluid to the surgical tool. A peristaltic pump pumps aspiration fluid from the surgical site generally through and away from the surgical tool and through an aspiration flow line to a collection container. A dampening mechanism in the aspiration flow line before the pump dampens the oscillations of the aspiration fluid flow, caused by the inherent operation of the peristaltic pump, in the aspiration flow line, and thereby at the surgical site.
Claims35
A surgical irrigation and aspiration system for aspirating fluid from a surgical site comprising:
- a surgical tool having irrigation and aspiration functions,
- an irrigation fluid means for providing irrigation fluid to said surgical tool,
- a peristaltic pumping means for pumping aspiration fluid from the surgical site generally through and away from said surgical tool,
- an aspiration fluid flow conduit providing a fluid connection between said surgical tool and said peristaltic pumping means for aspiration fluid,
- a dampening means for dampening the oscillations of the aspiration fluid flow at the surgical site caused at least in part by said peristaltic pumping means, in said aspiration fluid flow conduit,
- pressure equalization means for equalizing the pressure in said aspiration fluid flow conduit when said tool becomes occluded, wherein said equalization means is a liquid venting means, and
- said dampening means comprising a fluid connector in fluid communication with said aspiration fluid flow conduit, a fluid chamber fillable with fluid and communicatable through said fluid connector with said aspiration fluid flow conduit so as to increase fluidic capacitance of the system, and a flexible diaphragm extending across at least part of a side of said fluid chamber, said flexible diaphragm by its flexure movement caused by the fluid in said fluid chamber absorbing at least a portion of the fluctuations in pressure of the fluid in said fluid chamber and thereby, through said fluid connector, dampening the fluid flow oscillations in said aspiration fluid flow conduit and at the surgical site, said dampening means to prevent oscillating turbulence in the eye and prevent the iris from flutter and the posterior capsule from bouncing during aspiration.
For a surgical irrigation and aspiration system for aspirating fluid from a surgical site including a surgical tool having irrigation and aspiration functions, an irrigation fluid means for providing irrigation fluid to the surgical tool, a peristaltic pumping means for pumping aspiration fluid from the surgical site generally through and away from the surgical tool, and an aspiration fluid flow conduit providing a fluid connection between the surgical tool and the peristaltic pumping means, a dampening device for dampening the oscillations of the aspiration fluid flow, caused at least in part by the peristaltic pumping means, in the aspiration fluid flow conduit, comprising:
- a fluid connector positionable so as to be in fluid communication with the aspiration fluid flow conduit,
- a fluid chamber fillable with fluid and communicatable through said fluid connector with the aspiration fluid flow conduit so as to increase fluidic capacitance of the system,
- a flexible diaphragm extending across at least part of a side of said fluid chamber, and
- said flexible diaphragm by its flexure movement caused by the fluid in said fluid chamber absorbing at least a portion the fluctuations in pressure of the fluid in said fluid chamber and thereby, through said fluid connector, dampening the fluid flow oscillations in the aspiration fluid flow conduit and at the surgical site, said dampening means to prevent oscillating turbulence in the eye and prevent the iris from flutter and the posterior capsule from bouncing during aspiration.
A surgical irrigation and aspiration system for aspirating fluid from a surgical site comprising:
- a surgical tool having irrigation and aspiration functions,
- an irrigation fluid means for providing irrigation fluid to said surgical tool,
- a peristaltic pumping means for pumping aspiration fluid from the surgical site generally through and away from said surgical tool,
- an aspiration fluid flow conduit providing a fluid connection between said surgical tool and said peristaltic pumping means for aspiration fluid,
- a dampening means for dampening the oscillation of the aspiration fluid flow, caused at least in part by said peristaltic pumping means, in said aspiration fluid flow conduit,
- said dampening means comprising a fluid connector in fluid communication with said aspiration fluid flow conduit, a fluid chamber fillable with fluid and communicatable through said fluid connector with said aspiration fluid flow conduit, and a flexible diaphragm extending across at least part of a side of said fluid chamber, said flexible diaphragm by its flexure movement caused by the fluid in said fluid chamber absorbing at least a portion the fluctuations in pressure of the fluid in said fluid chamber and thereby, through said fluid connector, dampening the fluid flow oscillations in said aspiration fluid flow conduit, and said dampening means to prevent oscillating turbulence in the eye and prevent the iris from flutter and the posterior capsule from bouncing during aspiration.
A surgical irrigation and aspiration system for aspirating fluid from a surgical site comprising:
- a surgical tool having irrigation and aspiration functions,
- an irrigation fluid means for providing irrigation fluid to said surgical tool,
- a peristaltic pumping means for pumping aspiration fluid from the surgical site generally through and away from said surgical tool,
- an aspiration fluid flow conduit providing a fluid connection between said surgical tool and said peristaltic pumping means for aspiration fluid,
- a dampening means for dampening the oscillations of the aspiration fluid flow caused at least in part by said peristaltic pumping means, in said aspiration fluid flow conduit, and
- said dampening means comprising a fluid connector in fluid communication with said aspiration fluid flow conduit, a fluid chamber fillable with fluid and communicatable through said fluid connector with said aspiration fluid flow conduit, and a flexible diaphragm extending across at least part of a side of said fluid chamber, said flexible diaphragm by its flexure movement caused by the fluid in said fluid chamber absorbing at least a portion the fluctuations in pressure of the fluid in said fluid chamber and thereby, through said fluid connector, dampening the fluid to prevent oscillating turbulence in the eye and prevent the iris from flutter and the posterior capsule from bouncing during aspiration, and
- said fluid chamber is configured as a cone with its tip connected to said fluid connector and said flexible diaphragm covers its larger end opposite said tip.
For a surgical irrigation and aspiration system for aspirating fluid from a surgical site including a surgical tool having irrigation and aspiration functions, an irrigation fluid means for providing irrigation fluid to the surgical tool, a peristaltic pumping means for pumping aspiration fluid from the surgical site generally through and away from the surgical tool, and an aspiration fluid flow conduit providing a fluid connection between the surgical tool and the peristaltic pumping means, a dampening device for dampening the oscillations of the aspiration fluid flow, caused at least in part by the peristaltic pumping means, in the aspiration fluid flow conduit, comprising:
- a fluid connector positionable so as to be in fluid communication with the aspiration fluid flow conduit,
- a fluid chamber fillable with fluid and communicatable through said fluid connector with the aspiration fluid flow conduit,
- a flexible diaphragm extending across at least part of a side of said fluid chamber, and
- said flexible diaphragm by its flexure movement caused by the fluid in said fluid chamber absorbing at least a portion the fluctuations in pressure of the fluid in said fluid chamber and thereby, through said fluid connector, dampening the fluid flow oscillations in the aspiration fluid flow conduit, and
- said device to prevent oscillating turbulence in the eye and prevent the iris from flutter and the posterior capsule from bouncing during aspiration at the surgical site by at least about ninety percent.
Dependencies are inferred from the claim text.