Peristaltic pumps with selective activation of multiple fluid lines and fluid management systems including the same

Abstract

A peristaltic pump includes a first motor shaft, a second motor shaft, a first pump head, a second pump head, and a motor. The first pump head is operably coupled to the first motor shaft such that the first pump head is rotated in response to rotation of the first motor shaft. The second pump head is operably coupled to the second motor shaft such that the second pump head is rotated in response to rotation of the second motor shaft. The motor is configured to rotate the first and second motor shafts. The pump head has a first mode in which the first pump head is rotated and the second pump head is idle and a second mode in which the first pump head is idle and the second pump head is rotated.

1 - 11 . (canceled) 
     
     
         12 . A fluid management system comprising:
 an inflow pump;   an inflow path in fluid communication with the inflow pump and configured to deliver a fluid from the inflow pump into a body cavity;   a first outflow path configured to be in selective fluid communication with the body cavity;   a second outflow path configured to be in selective fluid communication with the body cavity;   a first pump head configured to pump fluid through the first outflow path; and   a second pump head configured to pump fluid through the second outflow path, the first and second pump heads selectively rotatable to maintain a desired pressure within the body cavity.   
     
     
         13 . The fluid management system according to  claim 12 , further comprising an outflow pump including:
 a first motor shaft operably coupled to the first pump head such that the first pump head is rotated in response to rotation of the first motor shaft;   a second motor shaft operably coupled to the second pump head such that the second pump head is rotated in response to rotation of the second motor shaft; and   a motor configured to rotate the first and second motor shafts, wherein the pump has a first mode in which the first pump head is rotated and the second pump head is idle and a second mode in which the first pump head is idle and the second pump head is rotated.   
     
     
         14 . The fluid management system according to  claim 13 , further comprising a controller in communication with the outflow pump, the controller configured to control the mode of the motor. 
     
     
         15 . The fluid management system according to  claim 14 , further comprising a primary outflow path configured to be in direct fluid communication with the body cavity and each of the first and second outflow paths to fluidly connect the first and second outflow paths with the body cavity. 
     
     
         16 . The fluid management system according to  claim 15 , further comprising a first clutch in mechanical communication with the motor and the first pump head, wherein when the first clutch is engaged the first pump head is rotated, and when the first clutch is disengaged, the first pump head is idle. 
     
     
         17 . The fluid management system according to  claim 16 , further comprising a second clutch in mechanical communication with the moor and the second pump head, wherein when the second clutch is engaged the second pump head is rotated, and when the second clutch is disengaged, the second pump head is idle. 
     
     
         18 .- 20 . (canceled) 
     
     
         21 . A fluid management system comprising:
 an inflow pump configured to deliver a fluid into a body cavity;   a primary outflow path in fluid communication with the body cavity and configured to provide a path for fluid to flow out of the body cavity;   a first pump head configured to pump fluid through a first outflow path disposed in selective fluid communication with the primary outflow path;   a second pump head configured to pump fluid through a second outflow path disposed in selective fluid communication with the primary outflow path; and   a valve operably coupled at one end to the primary outflow path and selectively positionable at an opposite end between a first position aligning the primary outflow path with the first output flow path and a second position aligning the primary outflow path with a second output flow path.   
     
     
         22 . The fluid management system according to  claim 21 , wherein the valve includes one or more intermediate positions wherein the primary outflow path is at least partially open to both the first and second outflow paths. 
     
     
         23 . The fluid management system according to  claim 21 , wherein the valve is discrete such that outflow flow is restricted only along the selected path. 
     
     
         24 . The fluid management system according to  claim 21 , wherein the valve is continually adjustable such that outflow flow is gradually reduced from one path and increased to the selected outflow path. 
     
     
         25 . The fluid management system according to  claim 21 , wherein the valve includes tactile feedback corresponding to a related position. 
     
     
         26 . The fluid management system according to  claim 21 , further comprising:
 A pump having first and second motor shafts, the first motor shaft operably coupled to the first pump head such that the first pump head is rotated in response to rotation of the first motor shaft, and the second motor shaft operably coupled to the second pump head such that the second pump head is rotated in response to rotation of the second motor shaft; and   a motor configured to rotate the first and second motor shafts, wherein the motor has a first mode in which the first pump head is rotated and the second pump head is idle, and a second mode in which the first pump head is idle and the second pump head is rotated, wherein the first pump head is on a first side of the motor and the second pump head is on a second, opposite side of the motor.   
     
     
         27 . The fluid management system according to  claim 26 , wherein the first motor shaft is a first portion of a common motor shaft and the second motor shaft is a second portion of the common motor shaft. 
     
     
         28 . The fluid management system according to  claim 26 , further comprising a first clutch having a motor side operably coupled to the first motor shaft, and a drive side operably coupled to the first pump head, the first clutch having an engaged configuration in which the first pump head rotates in response to rotation of the first drive shaft and a disengaged configuration in which the first pump head is decoupled from rotation of the first drive shaft. 
     
     
         29 . The fluid management system according to  claim 28 , wherein the first clutch is in the disengaged configuration when the motor is in the second mode. 
     
     
         30 . The fluid management system according to  claim 28 , further comprising a second clutch having a motor side operably coupled to the second motor shaft and a drive side operably coupled to the second pump head, the second clutch having an engaged configuration in which the second pump head rotates in response to rotation of the second drive shaft and a disengaged configuration in which the second pump head is decoupled from rotation of the second drive shaft. 
     
     
         31 . The fluid management system according to  claim 28 , further comprising a gear box coupled to the first motor shaft and the first clutch, the gear box applying a gear ratio to rotation of the first motor shaft such that rotation of the drive side of the first clutch is different than rotation of the first motor shaft. 
     
     
         32 . The fluid management system according to  claim 26 , wherein the motor has a third mode in which the first pump head and the second pump head are rotated. 
     
     
         33 . The fluid management system according to  claim 32 , wherein in the third mode the first pump head rotates at a different speed than the second pump head. 
     
     
         34 . The fluid management system according to  claim 26 , wherein the first pump head has a first diameter and the second pump head has a second diameter different from the first diameter.