Single slider double barrel syringe and method to use same for medical diagnostics, therapeutic use, and placement confirmation and joint space injection

A syringe, comprising:

• a first barrel having an interior surface that forms a first barrel lumen which receives bodily fluid;
• a first plunger having a head, the head of the first plunger slideably received in the first barrel lumen for movement therein, the head of the first plunger in sealing engagement with the interior surface of the first barrel;
• a second barrel having an interior surface that forms a second barrel lumen which holds an injectable fluid;
• a second plunger having a head, the head of the second plunger slideably received in the second barrel lumen for movement therein, the head of the second plunger in sealing engagement with the interior surface of the second barrel;
• a hub having an orifice through which bodily fluid is drawn into the first barrel lumen and the injectable fluid is expelled from the second barrel lumen;
• a slider having an exterior surface which translates between a first position and a second position in a direction which is perpendicular to a flow path of the bodily fluid drawn into the hub, the exterior surface of the slider exposed to the bodily fluid when the bodily fluid is drawn into the hub and the exterior surface of the slider exposed to the injectable fluid when the injectable fluid is expelled from the hub, the slider in the first position opens a fluidly communicative path between the orifice of the hub and the first barrel lumen and closes a fluidly communicative path between the orifice of the hub and the second barrel lumen, and the slider in the second position opens a fluidly communicative path between the orifice of the hub and the second barrel lumen and closes the fluidly communicative path between the orifice of the hub and the first barrel lumen;
• and
• a test indicator responsive to at least one characteristic of the bodily fluid, the test indicator positioned to be exposed to any bodily fluid drawn into the first barrel lumen and visible from an exterior of the first barrel.

A method for administering intra-articular injections via a syringe which includes a first barrel having a first barrel lumen, a second barrel having a second barrel lumen, a common hub, a needle coupled to the common hub, a slider moveable between first and second positions which fluidly communicatively couples the common hub with the first and the second barrel lumens, and at least one test indicator disposed in a test indicator housing coupled to the first barrel, the method comprising:

• in response to a lateral translation of a slider to the first position, opening a first fluidly communicative path between an orifice and an interior of the first barrel and closing a second fluidly communicative path between the orifice and an interior of the second barrel;
• receiving bodily fluid into the first barrel lumen via the needle when the slider is in the first position;
• exposing the test indicator to the bodily fluid;
• producing a defined visual indication by the test indicator;
• in response to a lateral translation of a slider to the second position, opening the second fluidly communicative path between the orifice and the interior of the second barrel and closing the first fluidly communicative path between the orifice and the interior of the first barrel;
• and
• expelling a fluid from the second barrel via the orifice and the needle.

A syringe, comprising:

• a first barrel having an interior surface that forms a first barrel lumen;
• a first plunger having a head, the head of the first plunger slideably received in the first barrel lumen for movement therein, the head of the first plunger in sealing engagement with the interior surface of the first barrel;
• a second barrel having an interior surface that forms a second barrel lumen;
• a second plunger having a head, the head of the second plunger slideably received in the second barrel lumen for movement therein, the head of the second plunger in sealing engagement with the interior surface of the second barrel;
• a hub having an orifice, the hub which provides a first fluidly communicative path between the orifice of the hub and the first barrel lumen and a second fluidly communicative path between the orifice of the hub and the second barrel lumen, at least a portion of the first and the second fluidly communicative paths which extend parallel to one another;
• and
• a slider slideably received via the hub and translatable along an axis that is perpendicular to at least the portions of the first and the second fluidly communicative paths which extend parallel to one another, between a first configuration and a second configuration, the slider in the first configuration opens the first fluidly communicative path between the orifice of the hub and the first barrel lumen and closes the second fluidly communicative path between the orifice of the hub and the second barrel lumen, and the slider in the second configuration opens the second fluidly communicative path between the orifice of the hub and the second barrel lumen and closes the first fluidly communicative path between the orifice of the hub and the first barrel lumen.

A syringe, comprising:

• a first barrel having an interior surface that forms a first barrel lumen which receives bodily fluid;
• a first plunger having a head, the head of the first plunger slideably received in the first barrel lumen for movement therein, the head of the first plunger in sealing engagement with the interior surface of the first barrel;
• a second barrel having an interior surface that forms a second barrel lumen which holds an injectable fluid;
• a second plunger having a head, the head of the second plunger slideably received in the second barrel lumen for movement therein, the head of the second plunger in sealing engagement with the interior surface of the second barrel;
• a hub having an orifice through which bodily fluid is drawn into the first barrel lumen and the injectable fluid is expelled from the second barrel lumen;
• and
• a slider having an exterior surface which translates between a first position and a second position in a direction which is perpendicular to a flow path of the bodily fluid drawn into the hub, the exterior surface of the slider exposed to the bodily fluid when the bodily fluid is drawn into the hub and the exterior surface of the slider exposed to the injectable fluid when the injectable fluid is expelled from the hub, the slider in the first position opens a fluidly communicative path between the orifice of the hub and the first barrel lumen and closes a fluidly communicative path between the orifice of the hub and the second barrel lumen, and the slider in the second position opens a fluidly communicative path between the orifice of the hub and the second barrel lumen and closes the fluidly communicative path between the orifice of the hub and the first barrel lumen.