METHOD FOR DRUG DELIVERY TO ANIMALS

• US 20080255500A1
• Filed: 06/20/2008
• Published: 10/16/2008
• Est. Priority Date: 07/03/2002
• Status: Active Grant

• Current Assignee: Bioanalytical Systems, Inc.
• Original Assignee: Bioanalytical Systems, Inc.
• Inventors: Kissinger, Candice B., Hampsch, James M., Bougher, Joseph A.
• Granted Patent: US 8,622,964 B2
• Time in Patent Office: Days
• US Class Current: 604/28
• CPC Class Codes: A61B 5/14 Devices for taking samples of blood hypodermic syringes A61M5/00; Measuring characteristics of blood in vivo, e.g. gas concentration within the blood, pH-value of blood measuring of blood pressure A61B5/02; non-radiation detecting or locating of foreign bodies in blood A61B5/06
• CPC Class Codes: A61B 5/1427 Multiple blood sampling, e.g. at periodic or pre-established intervals
• CPC Class Codes: A61B 5/15003 for venous or arterial blood
• CPC Class Codes: A61B 5/150221 Valves
• CPC Class Codes: A61B 5/150236 Pistons, i.e. cylindrical bodies that sit inside the syringe barrel, typically with an air tight seal, and slide in the barrel to create a vacuum or to expel blood
• CPC Class Codes: A61B 5/150244 Rods for actuating or driving the piston, i.e. the cylindrical body that sits inside the syringe barrel, typically with an air tight seal, and slides in the barrel to create a vacuum or to expel blood
• CPC Class Codes: A61B 5/150854 long distance, e.g. between patient's home and doctor's office
• CPC Class Codes: A61B 5/150862 intermediate range, e.g. within room or building
• CPC Class Codes: A61B 5/15087 short range, e.g. between console and disposable using implanted devices A61B5/150877
• CPC Class Codes: A61B 5/150992 Blood sampling from a fluid line external to a patient, such as a catheter line, combined with an infusion line; blood sampling from indwelling needle sets, e.g. sealable ports, luer couplings, valves tubing connectors and couplings A61M39/00
• CPC Class Codes: A61B 5/153 Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
• CPC Class Codes: A61B 5/155 Devices specially adapted for continuous or multiple sampling, e.g. at predetermined intervals devices loaded with multiple lancets simultaneously A61B5/15146
• CPC Class Codes: A61M 2205/11 with means for preventing cross-contamination when used for multiple patients
• CPC Class Codes: A61M 2250/00 Specially adapted for animals
• CPC Class Codes: A61M 5/1408 in parallel, e.g. manifolds, sequencing valves access sites A61M39/02; tube connectors A61M39/10
• CPC Class Codes: A61M 5/1456 with a replaceable reservoir comprising a piston rod to be moved into the reservoir, e.g. the piston rod is part of the removable reservoir
• CPC Class Codes: A61M 5/16827 controlling delivery of multiple fluids, e.g. sequencing, mixing or via separate flow-paths infusion of multiple fluids without using a controller A61M5/1407
• CPC Class Codes: Y02A 90/10 Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation

Abstract

A method for delivering a fluid to an animal with a drug delivery device without causing contamination to the drug delivery device. The drug delivery device used by the method may comprise a fluid subsystem with a switching device, disposable syringes, fluid reservoirs, disposable tubing, and a catheter. In one embodiment, the method allows a user to deliver multiple drugs to an animal without contaminating the valves that control the flow of fluid.

Claims

1. A method for delivering a fluid to an animal, the method comprising the steps of:

a. providing at least one catheter

b. inserting the catheter into the animal, so that a fluid can be withdrawn from the animal;

c. connecting the at least one catheter by at least one disposable tube to at least one drug delivery device having

1. at least one syringe containing a fluid; and

2. at least one valve that has a first position and a second position, wherein the second position receives one of the at least one disposable tubes therethrough; and

d. injecting the fluid into the animal by opening the second position of the at least one valve and pushing the at least one syringe so that the fluid will flow through the at least one disposable tube, through the catheter and into the animal.

2. The method of claim 1, wherein the drug delivery device further comprises at least one syringe pump, wherein each of the at least one syringe pumps is associated with one of the at least one syringes, such that each of the at least one syringe pumps operates each of the at least one syringes independently of each other.

3. The method of claim 2, wherein the drug delivery device further comprises at least one fluid reservoir containing at least one fluid, wherein each of the at least one fluid reservoirs is connected to one of the at least one syringes by at least one syringe inlet, the at least one syringe inlet being received by the first position of the at least one valve.

4. The method of claim 3, further comprising the step of filling the at least one syringe with the fluid from the reservoir by opening the first position of the at least one valve and pulling the at least one syringe.

5. The method of claim 4, wherein the drug delivery device further comprises a controller that is operably connected to the at least one syringe pump and that is operably connected to the at least one valve, such that the controller automatically controls the movement of the at least one syringe pump and controls the movement of the first and second positions of the at least one valve.

6. The method of claim 5, wherein the at least one reservoir comprises one reservoir filled with a first fluid.

7. The method of claim 6, wherein the at least one syringe comprises:

a. a first syringe connected to the at least one reservoir by a syringe inlet,

b. a second syringe that is filled with a second fluid and that is connected to the first syringe by a first syringe outlet and a second syringe outlet, and

c. a third syringe that is filled with a third fluid and that is connected to the second syringe by the second syringe outlet and a connecting tube, and that is connected to the catheter with a third syringe outlet and a system outlet.

8. The method of claim 7, wherein the at least one syringe pump comprises a first syringe pump operably connected to the first syringe, a second syringe pump operably connected to the second syringe and a third syringe pump operably connected to the third syringe.

9. The method of claim 8, wherein the at least one valve comprises a first valve containing the syringe inlet in its first position and the first syringe outlet in its second position, a second valve containing the second syringe outlet in its second position, and a third valve that contains the third syringe outlet in its second position.

10. The method of claim 9, further comprising the steps of:

a. opening the second position of the second valve and the second position of the third valve; and

b. injecting the second and third fluids into the animal through the catheter by pushing the second syringe and the third syringe.

11. The method of claim 5, wherein the at least one reservoir comprises a first reservoir filled with a first fluid and a second reservoir filled with a second fluid.

12. The method of claim 11, wherein the at least one syringe comprises:

a. a first syringe connected to the first reservoir by a first syringe inlet,

b. a second syringe that is connected to the second reservoir by a second syringe inlet and connected to the first syringe by a first syringe outlet and a second syringe outlet, and

c. a third syringe that is filled with a third fluid and that is connected to the second syringe by the second syringe outlet and a connecting tube, and that is connected to the catheter with a third syringe outlet and a system outlet.

13. The method of claim 12, wherein at least one valve comprises a first valve containing the syringe inlet in its first position and the first syringe outlet in its second position, a second valve containing the second syringe inlet in its first position and the second syringe outlet in its second position, and a third valve that contains the third syringe outlet in its second position.

14. The method of claim 13, further comprising the steps of:

a. opening the first position of the second valve;

b. pulling the second syringe, so that the second syringe fills with the second fluid;

c. opening the second position of the second valve and the second position of the third valve; and

d. injecting the second and third fluids into the animal through the catheter by pushing the second syringe and the third syringe.

15. The method of claim 5, wherein the at least one fluid reservoir comprises a first reservoir filled with a first fluid, a second reservoir filled with a second fluid, and a third reservoir filled with a third fluid.

16. The method of claim 15, wherein the at least one syringe comprises:

a. a first syringe connected to the first reservoir by a first syringe inlet,

b. a second syringe that is connected to the second reservoir by a second syringe inlet and to the first syringe by a first syringe outlet and a second syringe outlet, and

c. a third syringe that is connected to the third reservoir by a third syringe inlet, to the second syringe by the second syringe outlet and a connecting tube, and that is connected to the catheter with a third syringe outlet and a system outlet.

17. The method of claim 16, wherein the at least one catheter comprises one catheter connected to the system outlet by a catheter outlet, such that the first, second or third fluid may pass from the system outlet through the catheter outlet and the catheter into the animal.

18. The method of claim 17, wherein the at least one valve comprises a first valve with its first position containing the first syringe inlet and its second position containing the first syringe outlet, a second valve with its first position containing the second syringe inlet and its second position containing the second syringe outlet, a third valve with its first position containing the third syringe inlet and its second position containing the third syringe outlet and a fourth valve with its first position containing the catheter outlet, such that each valve can control the passage of fluid through each of the syringe inlets, each of the syringe outlets and the catheter outlet.

19. The method of claim 18, wherein the drug delivery device further comprises a waste outlet that is connected to the system outlet, the waste outlet being contained by the second position of the fourth valve, so that when the first position of the fourth valve is open, the second position of the fourth valve is closed and fluid is allowed to pass between the system outlet and the catheter outlet, and when the second position of the fourth valve is open, the first position of the fourth valve is closed and fluid is allowed to pass between the system outlet and the waste outlet.

20. The method of claim 19, wherein the first fluid comprises a saline solution, the second fluid comprises a first drug, and the third fluid comprises a second drug, so that the first syringe can be filled with the saline solution in order to flush the catheter, so that the second syringe can be filled with a first drug in order to inject the drug into the animal, and so that the third syringe can be filled with the second drug in order to inject the drug into the animal.

21. The method of claim 20, further comprising the steps of:

a. opening the first position of each of the first, second and fourth valves and opening the second position of the third valve;

b. causing the first and third syringe pumps to pull the first and third syringes, respectively, so that a body fluid of the animal appears in the catheter outlet and the first catheter fills with saline;

c. opening the second position of the first valve and opening the first position of the third valve; and

d. causing the first syringe pump to push the first syringe, so that the saline flushes the catheter outlet and the catheter.

22. The method of claim 21, further comprising the steps of:

a. opening the first position of the first valve;

b. causing the first syringe pump to pull the first syringe and causing the second syringe pump to pull the second syringe, so that the first syringe fills with saline and the second syringe fills with the first drug;

c. opening the second position of the second valve and causing the second syringe pump to push the second syringe, so that the first drug is injected into the animal through the catheter outlet and catheter; and

d. opening the second position of the first valve, opening the first position of the second valve, and causing the first syringe pump to push the first syringe, so that the catheter outlet and catheter are flushed with saline.

23. A method for collecting fluids from an animal, the method comprising the steps of:

a. providing a waste outlet and a catheter;

b. inserting the catheter into the animal, so that a fluid can be withdrawn from the animal;

c. connecting the catheter to at least one drug delivery device having

1. a first syringe and a second syringe, wherein the second syringe is connected to the first syringe by a first syringe outlet and a second syringe outlet and the second syringe is connected to the catheter and the waste outlet by the second syringe outlet, a source outlet and a catheter outlet;

2. at least one fluid reservoir with a fluid, wherein the at least one fluid reservoir is connected to at least one of the two syringes by at least one syringe inlet; and

3. a first valve that has a first position that contains the at least one syringe inlet and a second position that contains the first syringe outlet, a second valve that has a first position that may contain at least one syringe inlet and a second position that contains the second syringe outlet, and a third valve that has a first position that contains the catheter outlet and a second position that contains the waste outlet;

d. withdrawing a fluid sample from the animal into the second syringe by opening the second position of the second valve, opening the first position of the third valve and pulling the second syringe, so that the fluid sample will pass through the catheter into the drug delivery device and into the second syringe; and

e. collecting the fluid sample by opening the second position of the third valve and pushing the second syringe, so that the fluid sample will pass out of the drug delivery device through the waste outlet.