System and method for monitoring fluid deficit
A fluid management and medical device system may include a fluid management system and a medical device having one or more sensors proximate the distal end of the elongate shaft of the medical device. The controller of the fluid management system may be configured to calculate a fluid deficit when the distal end of the elongate shaft is disposed within a patient and configured to automatically pause fluid deficit calculation when the distal end of the elongate shaft is removed from the patient. In some instances the controller is configured to calculate the fluid deficit using rotational speed of the inflow pump in combination with a difference between a change in weight of a fluid supply source supplying fluid to the fluid management system and a change in weight of a collection container collecting fluid from the fluid management system.
1. An automated fluid management system, comprising:
a medical device comprising:
an elongate shaft configured to access a treatment site within a patient;
one or more sensors proximate a distal end of the elongate shaft; and
a handle coupled to a proximal end of the elongate shaft; and
a fluid management system comprising:
a first fluid supply source in fluid communication with the elongate shaft;
a second fluid supply source;
a collection container in fluid communication with the elongate shaft;
an inflow pump configured to pump fluid from the first fluid supply source to the treatment site; and
a controller configured to set a total fluid deficit to zero after priming the fluid management system;
wherein the controller is configured to automatically begin calculating a first fluid deficit associated with the first fluid supply source when the distal end of the elongate shaft is disposed within the patient;
wherein the controller is configured to retain the first fluid deficit when the first fluid supply source is replaced with the second fluid supply source in fluid communication with the elongate shaft, and the controller is configured to thereafter calculate the total fluid deficit by adding the first fluid deficit and a second fluid deficit associated with the second fluid supply source when the distal end of the elongate shaft is disposed within the patient.
2. The automated fluid management system of claim 1 , wherein the controller is configured to notify a user when the total fluid deficit reaches a preset fluid deficit limit.
3. The automated fluid management system of claim 2 , wherein the controller is configured to stop the inflow pump when the total fluid deficit reaches a preset fluid deficit limit.
4. The automated fluid management system of claim 1 , wherein the controller is configured to automatically pause fluid deficit calculation when the distal end of the elongate shaft is removed from the patient.
5. The automated fluid management system of claim 4 , wherein the controller is configured to automatically resume fluid deficit calculation when the distal end of the elongate shaft is reinserted into the patient.
6. The automated fluid management system of claim 5 , wherein the controller is configured to automatically resume fluid deficit calculation when signals from the one or more sensors indicate the distal end of the elongate shaft is reinserted into the patient.
7. The automated fluid management system of claim 1 , wherein the controller is configured to notify a user when a total amount of fluid infused reaches a preset fluid infusion limit.
8. The automated fluid management system of claim 1 , wherein the controller is configured to monitor an amount of fluid in the first fluid supply source through weight to compare an initial amount of fluid in the first fluid supply source to a current amount of fluid remaining the first fluid supply source.
9. The automated fluid management system of claim 1 , wherein the controller is configured to monitor an amount of fluid in the collection container through weight.
10. The automated fluid management system of claim 1 , wherein the controller is configured to continue calculating the total fluid deficit uninterrupted when the collection container is emptied or replaced.
11. The automated fluid management system of claim 1 , wherein the one or more sensors includes a pressure sensor.
12. The automated fluid management system of claim 11 , wherein the controller is configured to use pulsatile pressures to determine if the medical device is in use within the patient.
13. A fluid management and medical device system, comprising:
a medical device comprising:
an elongate shaft configured to access a treatment site within a patient;
one or more sensors proximate a distal end of the elongate shaft; and
a handle coupled to a proximal end of the elongate shaft; and
a fluid management system comprising:
a fluid supply source operatively coupled to a supply load cell and in fluid communication with the elongate shaft;
a collection container operatively coupled to a collection load cell and in fluid communication with a collection drape;
an inflow pump configured to pump fluid from the fluid supply source to the treatment site; and
a controller configured to control the inflow pump to maintain a desired fluid pressure at the treatment site or a desired fluid flow rate based on a set of system operating parameters;
wherein the controller is in electronic communication with the supply load cell and the collection load cell;
wherein the controller is configured to automatically begin calculating a first fluid deficit associated with the first fluid supply source when the distal end of the elongate shaft is disposed within the patient;
wherein the controller is configured to retain the first fluid deficit when the first fluid supply source is replaced with a second fluid supply source in fluid communication with the elongate shaft, and the controller is configured to thereafter calculate the total fluid deficit by adding the first fluid deficit and a second fluid deficit associated with the second fluid supply source when the distal end of the elongate shaft is disposed within the patient.
14. The fluid management and medical device system of claim 13 , wherein the controller is configured to notify a user when the total fluid deficit reaches a preset fluid deficit limit.
15. The fluid management and medical device system of claim 14 , wherein the controller is configured to stop the inflow pump when the total fluid deficit reaches a preset fluid deficit limit.
16. The fluid management and medical device system of claim 13 , wherein the controller is configured to automatically pause fluid deficit calculation when the distal end of the elongate shaft is removed from the patient.
17. The fluid management and medical device system of claim 16 , wherein the controller is configured to automatically resume fluid deficit calculation when the distal end of the elongate shaft is reinserted into the patient.
18. The fluid management and medical device system of claim 17 , wherein the controller is configured to automatically resume fluid deficit calculation when signals from the one or more sensors indicate the distal end of the elongate shaft is reinserted into the patient.
19. The fluid management and medical device system of claim 13 , wherein the controller is configured to notify a user when a total amount of fluid infused reaches a preset fluid infusion limit.
20. The fluid management and medical device system of claim 13 , wherein the controller is configured to monitor an amount of fluid in the first fluid supply source with the supply load cell to compare an initial amount of fluid in the first fluid supply source to a current amount of fluid remaining the first fluid supply source.