Infusion Devices

• US 20090118674A1
• Filed: 03/04/2008
• Published: 05/07/2009
• Est. Priority Date: 07/02/2002
• Status: Active Grant

• Current Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Inventors: Patton, Catherine C.
• Granted Patent: US 8,366,683 B2
• Time in Patent Office: Days
• US Class Current: 604/167.20
• CPC Class Codes: A61M 2039/027 having a particular valve, seal or septum septum A61M2039/0036
• CPC Class Codes: A61M 2039/0294 having a specific shape matching the shape of a tool to be inserted therein, e.g. for easy introduction, for sealing purposes, guide
• CPC Class Codes: A61M 39/0247 Semi-permanent or permanent transcutaneous or percutaneous access sites to the inside of the body peritoneal dialysis catheters A61M1/285; tracheostomy devices A61M16/0465; measuring pressure within the body A61B5/03; colostomy devices A61F5/445; gastrotomy feeding tubes A61J15/0015; means for fixing a feeding tube outside of the body A61J15/0053
• CPC Class Codes: A61M 39/04 having pierceable self-sealing members
• CPC Class Codes: A61M 5/162 Needle sets, i.e. connections by puncture between reservoir and tube ; Connections between reservoir and tube in jet-action syringes A61M5/30; connectors for tubes having sealed ends and a needle for piercing them A61M39/14

Abstract

The disclosures made herein relate to an infusion device specifically adapted for syringe injections. In one embodiment of the disclosures made herein, an infusion device comprises a body including an accessible surface having a single inlet port therein, an engagement surface having a single outlet port therein, a medication delivery channel extending between the single inlet port and the single outlet port, and an identification feature on the accessible surface of the body adjacent to the single inlet port. The single inlet port of the medication delivery channel is tapered thereby forming a funnel-shaped entry into the medication delivery channel. A cannula is coupled to the body at the single outlet port and is adapted for receiving medication from the single outlet port and transmitting the medication therethrough.

Claims

1. An infusion device comprising:

a body having a body passageway, a top, a bottom surface, an accessible surface that generally gets broader from the top to the bottom surface, and a greatest outer perimeter;

a cannula having a portion extending from the body and being positioned such that any portion of the cannula that is above a patient'"'"'s skin when the infusion device is used is positioned between the patient'"'"'s skin and the body and is within the greatest outer perimeter of the body, the cannula having an inner surface that defines a cannula passageway, the inner surface including (a) a first portion that cannot be in direct contact with medication delivered to a patient when the infusion device is used and (b) a second portion that can be in direct contact with medication delivered to a patient when the infusion device is used;

self-sealing material coupled to the body, the self-sealing material comprising a septum;

an adhesive laminate member attached to the body and not in contact with the self-sealing material; and

an insertion needle extending through the septum and the cannula passageway.

2. The infusion device of claim 1, in which the septum has a top surface and includes an outer wall extending from the top surface that includes an inwardly-tapered portion.

3. The infusion device of claim 1, in which an axis is centered in and runs through the body passageway, the septum includes a top surface and a bottom, and the infusion device includes (a) a first greatest distance parallel to the axis between the septum top surface and the top of the body and (b) a second greatest distance parallel to the axis between the bottom of the septum and the bottom surface of the body, the second greatest distance being greater than the first greatest distance.

4. The infusion device of claim 1, in which the body includes an inlet to the body passageway and an identification feature adjacent to the inlet for identifying the body passageway.

5. An infusion device comprising:

a body having a body passageway, a top, a bottom surface, an accessible surface that generally gets broader from the top to the bottom surface, and a greatest outer perimeter;

a cannula having a portion extending from the body and being positioned such that any portion of the cannula that is above a patient'"'"'s skin when the infusion device is used is positioned between the patient'"'"'s skin and the body and is within the greatest outer perimeter of the body, the cannula having an inner surface that defines a cannula passageway, the inner surface including (a) a first portion that cannot be in direct contact with medication delivered to a patient when the infusion device is used and (b) a second portion that can be in direct contact with medication delivered to a patient when the infusion device is used;

self-sealing material coupled to the body, the self-sealing material comprising a septum, the self-sealing material having an outer perimeter that is smaller than the outer perimeter of the body;

an adhesive laminate member attached to the body; and

an insertion needle extending through the septum and the cannula passageway.

6. The infusion device of claim 5, in which the septum has a top surface and includes an outer wall extending from the top surface that includes an inwardly-tapered portion.

7. The infusion device of claim 5, in which an axis is centered in and runs through the body passageway, the septum includes a top surface and a bottom, and the infusion device includes (a) a first greatest distance parallel to the axis between the septum top surface and the top of the body and (b) a second greatest distance parallel to the axis between the bottom of the septum and the bottom surface of the body, the second greatest distance being greater than the first greatest distance.

8. The infusion device of claim 5, in which the body includes an inlet to the body passageway and an identification feature adjacent to the inlet for identifying the body passageway.

9. An infusion device comprising:

a body having a body passageway, a top, a bottom surface, an accessible surface that generally gets broader from the top to the bottom surface, and a greatest outer perimeter;

a cannula having a portion extending from the body and being positioned such that any portion of the cannula that is above a patient'"'"'s skin when the infusion device is used is positioned between the patient'"'"'s skin and the body and is within the greatest outer perimeter of the body, the cannula having an inner surface that defines a cannula passageway, the inner surface including (a) a first portion that cannot be in direct contact with medication delivered to a patient when the infusion device is used and (b) a second portion that can be in direct contact with medication delivered to a patient when the infusion device is used, the cannula also having a top edge positioned above the bottom surface of the body;

self-sealing material coupled to the body, the self-sealing material comprising a septum; and

an adhesive laminate member attached to the body and not in contact with the self-sealing material.

10. The infusion device of claim 9, in which the septum has a top surface and includes an outer wall extending from the top surface that includes an inwardly-tapered portion.

11. The infusion device of claim 9, in which an axis is centered in and runs through the body passageway, the septum includes a top surface and a bottom, and the infusion device includes (a) a first greatest distance parallel to the axis between the septum top surface and the top of the body and (b) a second greatest distance parallel to the axis between the bottom of the septum and the bottom surface of the body, the second greatest distance being greater than the first greatest distance.

12. The infusion device of claim 9, in which the body includes an inlet to the body passageway and an identification feature adjacent to the inlet for identifying the body passageway.

13. An infusion device comprising:

a body having a body passageway, a top, a bottom surface, an accessible surface that generally gets broader from the top to the bottom surface, and a greatest outer perimeter;

a cannula having a portion extending from the body and being positioned such that any portion of the cannula that is above a patient'"'"'s skin when the infusion device is used is positioned between the patient'"'"'s skin and the body and is within the greatest outer perimeter of the body, the cannula having an inner surface that defines a cannula passageway, the inner surface including (a) a first portion that cannot be in direct contact with medication delivered to a patient when the infusion device is used and (b) a second portion that can be in direct contact with medication delivered to a patient when the infusion device is used, the cannula also having a top edge positioned above the bottom surface of the body;

self-sealing material coupled to the body, the self-sealing material comprising a septum, the self-sealing material having an outer perimeter that is smaller than the outer perimeter of the body; and

an adhesive laminate member attached to the body.

14. The infusion device of claim 13, in which the septum has a top surface and includes an outer wall extending from the top surface that includes an inwardly-tapered portion.

15. The infusion device of claim 13, in which an axis is centered in and runs through the body passageway, the septum includes a top surface and a bottom, and the infusion device includes (a) a first greatest distance parallel to the axis between the septum top surface and the top of the body and (b) a second greatest distance parallel to the axis between the bottom of the septum and the bottom surface of the body, the second greatest distance being greater than the first greatest distance.

16. The infusion device of claim 13, in which the body includes an inlet to the body passageway and an identification feature adjacent to the inlet for identifying the body passageway.

17. An infusion device comprising:

a body having a body passageway and a greatest outer perimeter;

a cannula having a portion extending from the body and being positioned such that any portion of the cannula that is above a patient'"'"'s skin when the infusion device is used is positioned between the patient'"'"'s skin and the body and is within the greatest outer perimeter of the body, the cannula having an inner surface that defines a cannula passageway, the inner surface including (a) a top edge and a first portion that tapers inwardly from the top edge and that cannot be in direct contact with medication delivered to a patient when the infusion device is used and (b) a second portion that can be in direct contact with medication delivered to a patient when the infusion device is used;

self-sealing material coupled to the body, the self-sealing material comprising a septum;

an adhesive laminate member attached to the body and not in contact with the self-sealing material; and

an insertion needle extending through the septum and the cannula passageway.

18. The infusion device of claim 17, in which the septum has a top surface and includes an outer wall extending from the top surface that includes an inwardly-tapered portion.

19. The infusion device of claim 17, in which an axis is centered in and runs through the body passageway, the septum includes a top surface and a bottom, and the infusion device includes (a) a first greatest distance parallel to the axis between the septum top surface and the top of the body and (b) a second greatest distance parallel to the axis between the bottom of the septum and the bottom surface of the body, the second greatest distance being greater than the first greatest distance.

20. The infusion device of claim 17, in which the body includes an inlet to the body passageway and an identification feature adjacent to the inlet for identifying the body passageway.

21. An infusion device comprising:

a body having a body passageway and a greatest outer perimeter;

a cannula having a portion extending from the body and being positioned such that any portion of the cannula that is above a patient'"'"'s skin when the infusion device is used is positioned between the patient'"'"'s skin and the body and is within the greatest outer perimeter of the body, the cannula having an inner surface that defines a cannula passageway, the inner surface including (a) a top edge and a first portion that tapers inwardly from the top edge and that cannot be in direct contact with medication delivered to a patient when the infusion device is used and (b) a second portion that can be in direct contact with medication delivered to a patient when the infusion device is used;

self-sealing material coupled to the body, the self-sealing material comprising a septum, the self-sealing material having an outer perimeter that is smaller than the outer perimeter of the body;

an adhesive laminate member attached to the body; and

an insertion needle extending through the septum and the cannula passageway.

22. The infusion device of claim 21, in which the septum has a top surface and includes an outer wall extending from the top surface that includes an inwardly-tapered portion.

23. The infusion device of claim 21, in which an axis is centered in and runs through the body passageway, the septum includes a top surface and a bottom, and the infusion device includes (a) a first greatest distance parallel to the axis between the septum top surface and the top of the body and (b) a second greatest distance parallel to the axis between the bottom of the septum and the bottom surface of the body, the second greatest distance being greater than the first greatest distance.

24. The infusion device of claim 21, in which the body includes an inlet to the body passageway and an identification feature adjacent to the inlet for identifying the body passageway.

25. An infusion device comprising:

a body having a body passageway, a bottom surface, and a greatest outer perimeter;

a cannula having a portion extending from the body and being positioned such that any portion of the cannula that is above a patient'"'"'s skin when the infusion device is used is positioned between the patient'"'"'s skin and the body and is within the greatest outer perimeter of the body, the cannula having an inner surface that defines a cannula passageway, the inner surface including (a) a top edge positioned above the bottom surface of the body and a first portion that tapers inwardly from the top edge and that cannot be in direct contact with medication delivered to a patient when the infusion device is used and (b) a second portion that can be in direct contact with medication delivered to a patient when the infusion device is used;

self-sealing material coupled to the body, the self-sealing material comprising a septum; and

an adhesive laminate member attached to the body and not in contact with the self-sealing material.

26. The infusion device of claim 25, in which the septum has a top surface and includes an outer wall extending from the top surface that includes an inwardly-tapered portion.

27. The infusion device of claim 25, in which an axis is centered in and runs through the body passageway, the septum includes a top surface and a bottom, and the infusion device includes (a) a first greatest distance parallel to the axis between the septum top surface and the top of the body and (b) a second greatest distance parallel to the axis between the bottom of the septum and the bottom surface of the body, the second greatest distance being greater than the first greatest distance.

28. The infusion device of claim 25, in which the body includes an inlet to the body passageway and an identification feature adjacent to the inlet for identifying the body passageway.

29. An infusion device comprising:

a body having a body passageway, a bottom surface, and a greatest outer perimeter;

a cannula having a portion extending from the body and being positioned such that any portion of the cannula that is above a patient'"'"'s skin when the infusion device is used is positioned between the patient'"'"'s skin and the body and is within the greatest outer perimeter of the body, the cannula having an inner surface that defines a cannula passageway, the inner surface including (a) a top edge positioned above the bottom surface of the body and a first portion that tapers inwardly from the top edge and that cannot be in direct contact with medication delivered to a patient when the infusion device is used and (b) a second portion that can be in direct contact with medication delivered to a patient when the infusion device is used;

self-sealing material coupled to the body, the self-sealing material comprising a septum, the self-sealing material having an outer perimeter that is smaller than the outer perimeter of the body; and

an adhesive laminate member attached to the body.

30. The infusion device of claim 29, in which the septum has a top surface and includes an outer wall extending from the top surface that includes an inwardly-tapered portion.

31. The infusion device of claim 29, in which an axis is centered in and runs through the body passageway, the septum includes a top surface and a bottom, and the infusion device includes (a) a first greatest distance parallel to the axis between the septum top surface and the top of the body and (b) a second greatest distance parallel to the axis between the bottom of the septum and the bottom surface of the body, the second greatest distance being greater than the first greatest distance.

32. The infusion device of claim 29, in which the body includes an inlet to the body passageway and an identification feature adjacent to the inlet for identifying the body passageway.