Infusion device

• US 9,486,575 B2
• Filed: 07/15/2014
• Issued: 11/08/2016
• 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.
• Primary Examiner(s): STIGELL, THEODORE J
• Application Number:
  US14/332,185
• Publication Number:
  US 20150045745A1
• Time in Patent Office: 847 Days
• Field of Search: 604/164.01, 604/174, 604/180, 604/244
• US Class Current: 1/1
• 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 medication delivery channel, the body having an engagement surface with a circular outer border;

an adhesive laminate member mounted to the engagement surface of the body, the adhesive laminate member having an adhesive layer, a release liner, and a circular outer border that is larger than the circular outer border of the engagement surface of the body;

a cannula having a portion extending from the body, the cannula having a first external perimeter that is greater than a second external perimeter of the cannula that is parallel to and below the first external perimeter, the cannula also having a cannula passageway defined by a cannula passageway wall, the cannula passageway wall including a first portion that cannot be in direct contact with medication delivered to a patient when the infusion device is used; and

a septum positioned within the medication delivery channel, the septum having a septum top surface that is exposed to open space, the septum also having a septum bottom surface that is exposed to open space, the septum bottom surface having a bottom-most portion that is flat and parallel to the engagement surface;

the infusion device being configured so that a portion of the infusion device will be above a patient'"'"'s skin when the infusion device is used.

2. The infusion device of claim 1, where the body has a top, and the septum top surface is positioned below the top of the body.

3. The infusion device of claim 1, where the septum has a first perimeter that is greater than a second perimeter of the septum that is parallel to and closer to the adhesive layer than is the first perimeter.

4. The infusion device of claim 1, where the body has an inlet port, the cannula has a cannula top, and the septum top surface is positioned closer to the inlet port than to the cannula top.

5. The infusion device of claim 1, further comprising an insertion needle extending through the septum and the cannula passageway.

6. An infusion device comprising:

a body having a medication delivery channel, a top, and a single inlet port that provides the body'"'"'s only access for delivering medication to the medication delivery channel, the body having an engagement surface with a circular outer border;

an adhesive laminate member mounted to the engagement surface of the body, the adhesive laminate member having an adhesive layer, a release liner, and a circular outer border that is larger than the circular outer border of the engagement surface of the body;

a cannula having a portion extending from the body; and

a septum for the medication delivery channel, the septum having a septum top surface positioned below the top of the body, the septum also having a septum bottom surface, the septum bottom surface having a bottom-most portion that is flat and parallel to the engagement surface;

the infusion device being configured such that any injection needle that penetrates the septum and exits the septum bottom surface will exit the septum bottom surface into;

(a) open space within the medication delivery channel, or (b) a tapered wall.

7. The infusion device of claim 6, where the septum has a first perimeter that is greater than a second perimeter of the septum that is parallel to and closer to the adhesive layer than is the first perimeter.

8. The infusion device of claim 6, where the cannula has a cannula top and the septum top surface is positioned closer to the single inlet port than to the cannula top.

9. The infusion device of claim 6, where the cannula has a cannula passageway and the infusion device further comprises an insertion needle extending through the septum and the cannula passageway.

10. An infusion device comprising:

a body having a medication delivery channel and an engagement surface having a circular outermost perimeter;

an adhesive laminate member mounted to the engagement surface of the body, the adhesive laminate member having an adhesive layer, a release liner, and a circular outer border that is larger than the circular outermost perimeter of the body;

a cannula having a portion extending from the body, the cannula being positioned such that any portion of the cannula that will be above a patient'"'"'s skin when the infusion device is used will be positioned within the outermost perimeter of the body;

a septum for the medication delivery channel, the septum having a septum top surface positioned below the top of the body, the septum also having a septum bottom surface that is exposed to open space, the septum bottom surface having a bottom-most portion that is flat and parallel to the engagement surface; and

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

11. The infusion device of claim 10, where the body has a top, and the septum top surface is positioned below the top of the body.

12. The infusion device of claim 10, where the septum has a first perimeter that is greater than a second perimeter of the septum that is parallel to and closer to the adhesive layer than is the first perimeter.

13. The infusion device of claim 10, where the body has an inlet port, the cannula has a cannula top, and the septum top surface is positioned closer to the inlet port than to the cannula top.