Method of treating a joint using an articular injection system

A method of treating a joint of a patient by selectively delivering at least two different fluids through a single needle penetration to a subcutaneous location within an anatomy of the patient, comprising:

• providing an injection system comprising a fluid delivery module and a handpiece assembly;
• wherein the handpiece assembly comprises a disposable tip, a distal end of said tip comprising a needle;
• wherein the handpiece assembly comprises at least one controller, said at least one controller configured to be operated while a user grasps said handpiece assembly;
• wherein the fluid delivery module comprises a first loading area configured to receive a first container and a second loading area configured to receive a second container;
• wherein the first container comprises a first fluid, and wherein the second container comprises a second fluid;
• wherein the first fluid is configured to be selectively placed in fluid communication with a first reservoir of the fluid delivery module and a first conduit of the handpiece assembly after the first container is secured to the first loading area;
• wherein the second fluid is configured to be selectively placed in fluid communication with a second reservoir of the fluid delivery module and a second conduit of the handpiece assembly after the second container is secured to the second loading area;
• wherein the first and second conduits are routed through an interior of the handpiece assembly, said conduits placing the first and second reservoirs in fluid communication with the disposable tip;
• wherein the first loading area and second loading area are configured to securely receive containers of various sizes and shapes;
• wherein the injection system is configured to receive instructions for delivering the first and second fluids to the needle of the handpiece assembly;
• wherein the fluid delivery module is configured to simultaneously transfer a volume of at least one of the first fluid and the second fluid to said needle through the first and second conduits under a first delivery protocol, and wherein the fluid delivery module is configured to sequentially transfer a volume of at least one of the first fluid and the second fluid to said needle through the first and second conduits under a second delivery protocol;
• wherein said handpiece assembly is configured to be in data communication with the fluid delivery module;
• wherein said handpiece assembly is maneuverable to position the needle within the patient;
• wherein the first and second fluids are combined within the handpiece assembly at a location upstream of the needle under a simultaneous injection mode;
• delivering a volume of the first fluid from the fluid delivery module to the patient through the needle and through the first conduit based at least in part on instructions provided to the at least one controller of the handpiece assembly;
• and
• delivering a volume of the second fluid from the fluid delivery module to the patient through the needle and through the second conduit based at least in part on instructions provided to the at least one controller of the handpiece assembly;
• wherein a first plunger is slidably disposed within the first reservoir, and wherein a second plunger is slidably disposed within the second reservoir;
• wherein, based on the instructions, at least one motor of the fluid delivery module is configured to move at least one of the first plunger and the second plunger within the corresponding reservoir to mechanically transfer at least one of the first fluid and the second fluid through the handpiece assembly and to the patient;
• and
• wherein the at least one motor is configured to move the first plunger independently of the second plunger.