DRUG ACCEPTABILITY INDICATOR

• US 20100106097A1
• Filed: 09/29/2009
• Published: 04/29/2010
• Est. Priority Date: 10/29/2008
• Status: Abandoned Application

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Elmouelhi, Ahmed
• Application Number:
  US12/568,974
• Publication Number:
  US 20100106097A1
• Time in Patent Office: Days
• US Class Current: 604/189
• CPC Class Codes: A61M 2205/3324 PH measuring means
• CPC Class Codes: A61M 2205/583 by visual feedback
• CPC Class Codes: A61M 2205/584 having a color code
• CPC Class Codes: A61M 2205/702 automatically during use
• CPC Class Codes: A61M 2209/045 for filling, e.g. for filling reservoirs
• CPC Class Codes: A61M 5/14276 specially adapted for implantation
• CPC Class Codes: A61M 5/3129 Syringe barrels A61M5/3205 and A61M5/50 take precedence

Abstract

The invention relates generally to an indicator for a syringe. More particularly, the present invention relates to a method and apparatus for testing the compatibility of a fluid before injecting the fluid into a medical device. An indicator may be attached to an interior of the reservoir body wherein the indicator strip contacts the fluid medication loaded into the reservoir body and visually indicates the presence of a selected parameter. The indicator may be an indicator strip infused with an chemical indicator that changes color when in contact with a selected target material.

Claims

1. A syringe for delivery of a fluid medication comprising

a reservoir body;

a plunger operably attached to a proximal end of the reservoir body, the plunger including a plunger head on the distal end of the plunger;

an outlet located on a distal end of the reservoir body;

an indicator fixedly attached to an interior of the reservoir body wherein the indicator contacts the fluid medication loaded into the reservoir body and visually indicates the presence of a selected parameter.

2. The syringe of claim 1 wherein the indicator is fixedly attached to the distal end of the reservoir body.

3. The syringe of claim 1 wherein the indicator is a litmus paper.

4. The syringe of claim 1 wherein the indicator is a sulfite detection paper.

5. The syringe of claim 1 wherein the selected parameter is pH.

6. An apparatus for delivering a fluid, the apparatus comprising:

a housing;

an inlet in the housing for receiving the fluid;

an outlet in the housing for discharging the fluid;

a piston channel within the housing through which the fluid flows from the inlet to the outlet;

an actuator positioned within the housing and moveable between a first position and a second position, the actuator defining a piston chamber for storing fluid received through the inlet when the actuator is in the retracted position, the actuator driving the fluid stored in the piston chamber toward the outlet when the actuator transitions from the retracted position to the forward position and;

an indicator fixedly attached to the piston channel for indicating a parameter of the fluid.

7. The syringe of claim 6 wherein the indicator is fixedly attached to the distal end of the reservoir body.

8. The syringe of claim 6 wherein the indicator is a litmus paper.

9. The syringe of claim 6 wherein the indicator is a sulfite detection paper.

10. The syringe of claim 6 wherein the selected parameter is pH.

11. A device for delivery of a fluid medication comprising

a reservoir body;

a plunger operably attached to a proximal end of the reservoir body, the plunger including a plunger head on the distal end of the plunger;

an outlet located on a distal end of the reservoir body;

a chamber fluidly connected to the reservoir body wherein placement of a fluid in the reservoir body results in some amount of the fluid entering the chamber;

an indicator fixedly attached to an interior of the chamber wherein the indicator contacts the fluid medication loaded into the reservoir body and visually indicates the presence of a selected parameter.