Medical devices and pumps therefor
First Claim
1. A system for delivering microwave energy to ablate tissue, comprising:
- an applicator comprising an elongate shaft having a proximal end and a distal end, the elongate shaft comprising an external tubular wall, a transmission line and a flow dividing member, the transmission line and flow dividing member extending substantially the entire length of the external tubular wall, a first side of a transmission line outer wall and a first side of a flow dividing member outer wall contacting each other, a second side of the transmission line outer wall and a second side of the flow dividing member outer wall contacting an internal surface of the external tubular wall at two-spatially separated locations, defining a first cooling channel and a second cooling channel, the applicator further comprising a microwave antenna at a distal end of the applicator;
a handle connected to the proximal end of the elongate shaft, the handle comprising a manifold, the manifold comprising a distal chamber and a proximal chamber, the first cooling channel being in fluid communication with the distal chamber of the manifold and the second cooling chamber being in fluid communication with the proximal chamber of the manifold;
a pump for pumping cooling fluid through the first cooling channel, the pump comprising a pump body, a pump head, and a first elongate flow duct extending between the pump and the first cooling channel;
a microwave generator to generate a microwave signal, the signal to be transmitted to the microwave antenna of the applicator; and
a power cable extending from the pump head to the applicator to power the microwave antenna.
9 Assignments
0 Petitions
Accused Products
Abstract
A microwave applicator device comprising a probe (11) for ablating the body of a human or animal, a cooling passage sage (20, 21) extending through the probe (11) and arranged to carry a cooling fluid, a pump (71) for pumping the fluid through the probe (11), and an elongate flexible duct (104) extending between the pump (71) and one end of the cooling passage (20, 21), the pump comprising a pump body (73) including a motor (120) and a pump head (72) detachably mounted to the pump body (73), the pump head (72) comprising a first port (86) connected to a proximal end of the elongate flow duct (104), a second port (85) and fluid propulsion means (84, 92) for creating a flow of fluid between the ports (85, 86) and along the elongate flow duct 104 upon energization of the motor (120), the pump head (72) being arranged to sealingly contain the fluid. The pump head (72), the elongate flexible duct (104) and the probe (11) form a replaceable assembly that can be detached from the pump body (73) and discarded following use.
109 Citations
18 Claims
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1. A system for delivering microwave energy to ablate tissue, comprising:
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an applicator comprising an elongate shaft having a proximal end and a distal end, the elongate shaft comprising an external tubular wall, a transmission line and a flow dividing member, the transmission line and flow dividing member extending substantially the entire length of the external tubular wall, a first side of a transmission line outer wall and a first side of a flow dividing member outer wall contacting each other, a second side of the transmission line outer wall and a second side of the flow dividing member outer wall contacting an internal surface of the external tubular wall at two-spatially separated locations, defining a first cooling channel and a second cooling channel, the applicator further comprising a microwave antenna at a distal end of the applicator; a handle connected to the proximal end of the elongate shaft, the handle comprising a manifold, the manifold comprising a distal chamber and a proximal chamber, the first cooling channel being in fluid communication with the distal chamber of the manifold and the second cooling chamber being in fluid communication with the proximal chamber of the manifold; a pump for pumping cooling fluid through the first cooling channel, the pump comprising a pump body, a pump head, and a first elongate flow duct extending between the pump and the first cooling channel; a microwave generator to generate a microwave signal, the signal to be transmitted to the microwave antenna of the applicator; and a power cable extending from the pump head to the applicator to power the microwave antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for delivering microwave energy to ablate tissue, comprising:
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an applicator comprising an elongate shaft having a proximal end and a distal end, the elongate shaft comprising an external tubular wall, a transmission line and a flow dividing member, the transmission line and flow dividing member extending substantially the entire length of the external tubular wall, the transmission line and flow dividing member defining a first cooling channel and a second cooling channel, the applicator further comprising a microwave antenna at a distal end of the applicator; a handle connected to the proximal end of the elongate shaft, the handle comprising a manifold, the manifold comprising a distal chamber and a proximal chamber, the first cooling channel being in fluid communication with the distal chamber of the manifold and the second cooling chamber being in fluid communication with the proximal chamber of the manifold; a pump for pumping cooling fluid through the first cooling channel, the pump comprising a pump body, a pump head, and a first elongate flow duct extending between the pump and the first cooling channel; a microwave generator to generate a microwave signal, the signal to be transmitted to the microwave antenna of the applicator; and a power cable extending from the pump head to the applicator to power the microwave antenna. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification