Medical systems and methods
First Claim
Patent Images
1. A fibroid treatment system, comprising:
- a controller;
an inflow pump operated by the controller and configured to provide fluid inflow through a flow path to a patient'"'"'s uterine cavity;
an outflow pump operated by the controller and configured to provide fluid outflow through a flow path to the uterine cavity; and
a motor driven resecting device operated by the controller, the device comprising an elongate introducer having (i) a tissue extraction channel therein with a diameter of no less than 2.4 mm and (ii) an outside diameter of no more than 3.8 mm such that the device is adapted to remove fibroid tissue at a rate of at least 2 gm/min;
wherein the controller is configured to actuate the inflow and outflow pumps in response to signals of fluid pressure in the uterine cavity to maintain a target pressure therein;
wherein said signal of fluid pressure in the site is provided by a pressure sensor coupled to a static fluid column communicating with the uterine cavity;
wherein the pressure sensor includes two independent sensing elements that both interface with the static fluid column; and
wherein the controller is configured to compare pressure signals from the two independent sensing elements of the pressure sensor and to provide a warning signal and/or turn off one or more of the inflow pump and the outflow pump if the pressure signals from the two independent sensing elements are not within a preselected range from one another.
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Accused Products
Abstract
A fluid management system for use in a tissue resection procedure includes a controller. An inflow pump is operated by the controller and configured to provide fluid inflow through a flow path to a site in patient'"'"'s body. An outflow pump is operated by the controller and configured to provide fluid outflow through a flow path from the site in patient'"'"'s body. A motor driven resecting device may be provided for resecting tissue at the site. The controller is configured to actuate an inflow pump and an outflow pump in response to various signals and various algorithms are provided to provide malfunction warnings and assure safe operation.
298 Citations
24 Claims
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1. A fibroid treatment system, comprising:
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a controller; an inflow pump operated by the controller and configured to provide fluid inflow through a flow path to a patient'"'"'s uterine cavity; an outflow pump operated by the controller and configured to provide fluid outflow through a flow path to the uterine cavity; and a motor driven resecting device operated by the controller, the device comprising an elongate introducer having (i) a tissue extraction channel therein with a diameter of no less than 2.4 mm and (ii) an outside diameter of no more than 3.8 mm such that the device is adapted to remove fibroid tissue at a rate of at least 2 gm/min; wherein the controller is configured to actuate the inflow and outflow pumps in response to signals of fluid pressure in the uterine cavity to maintain a target pressure therein; wherein said signal of fluid pressure in the site is provided by a pressure sensor coupled to a static fluid column communicating with the uterine cavity; wherein the pressure sensor includes two independent sensing elements that both interface with the static fluid column; and wherein the controller is configured to compare pressure signals from the two independent sensing elements of the pressure sensor and to provide a warning signal and/or turn off one or more of the inflow pump and the outflow pump if the pressure signals from the two independent sensing elements are not within a preselected range from one another. - View Dependent Claims (2, 3)
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4. A fluid management system, comprising:
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a controller; a first pump operated by the controller and configured to provide fluid inflow to a site in patient'"'"'s body; a second pump operated by the controller and configured to provide fluid outflow from the site in patient'"'"'s body; wherein the controller is configured to provide at least one operating parameter selected from a group consisting of a first pump speed, a second pump speed, and a targeted pressure in the site rate; and wherein the controller is configured to provide a fluid loss warning if the first pump speed exceeds a predetermined level for a pre-selected time interval. - View Dependent Claims (5, 6, 7, 8, 9, 10)
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11. A fluid management system, comprising:
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a controller; an inflow pump operated by the controller and adapted to provide a fluid inflow through a flow path to a site in a patient'"'"'s body; and an outflow pump operated by the controller and adapted to provide a fluid outflow through a flow path from the site in the patient'"'"'s body; wherein the controller is configured to provide at least one operating parameter selected from a group consisting of a first pump speed, a second pump speed, and a targeted pressure in the site; and wherein the controller is configured to provide a blocked flow warning if a calculated power for driving the inflow pump exceeds a predetermined level for a pre-selected time interval. - View Dependent Claims (12, 13)
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14. A fluid management system, comprising:
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a controller; a first pump operated by the controller and configured to provide fluid inflow to a site in patient'"'"'s body; a second pump operated by the controller and configured to provide fluid outflow from the site in patient'"'"'s body; wherein the controller is configured to provide at least one operating parameter selected from a group consisting of a first pump speed, a second pump speed, and a targeted pressure in the site; and wherein the controller is configured to provide a blocked flow warning if an input voltage to the first pump is below a predetermined threshold voltage for a pre-selected time interval during which the second pump is operating. - View Dependent Claims (15, 16, 17)
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18. A fluid management system, comprising:
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a controller; an inflow pump operated by the controller and configured to provide fluid inflow through a flow path to a site in patient'"'"'s body; an outflow pump operated by the controller and configured to provide fluid outflow through a flow path from the site in patient'"'"'s body; wherein the controller is configured to maintain at least one operating parameter selected from a group consisting of a first pump speed, a fluid inflow rate, a second pump speed, and a fluid outflow rate; and wherein the controller is further configured to provide a blocked flow warning if a measured current to the outflow pump exceeds a predetermined threshold current for a pre-selected time interval.
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19. A fluid management system for use in a tissue resection procedure, comprising:
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a controller; an inflow pump operated by the controller and configured to provide fluid inflow through a flow path to a site in patient'"'"'s body; an outflow pump operated by the controller and configured to provide fluid outflow through a flow path from the site in patient'"'"'s body; and a motor driven resecting device for resecting tissue at the site; wherein the controller is configured to actuate an inflow pump and an outflow pump in response to signals of actual pressure at the site in the patient'"'"'s body to provide respective fluid inflow and fluid outflow to maintain a target pressure at the site; and wherein the controller is configured to de-activate the motor driven resecting device upon sensing that the actual pressure in the site falls below a predetermined threshold pressure level. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification