Infusion device

• US 20060264818A1
• Filed: 07/07/2006
• Published: 11/23/2006
• Est. Priority Date: 07/02/2002
• Status: Active Grant

• Current Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Original Assignee: Patton Medical Devices LP
• Inventors: Patton, Catherine C.
• Granted Patent: US 7,524,300 B2
• Time in Patent Office: Days
• US Class Current: 604/93.10
• 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, and a bottom surface;

a cannula having a portion extending from the body, the cannula also having a greatest width and a cannula passageway defined at least in part by a cannula passageway wall, the cannula passageway wall having a cannula passageway wall portion that will be in direct contact with medication delivered through the infusion device and into a living being when the infusion device is used;

a septum that is separate from but coupled to the body, the septum having a septum bottom surface that includes a septum bottom surface portion that is exposed to open space that is (a) upstream of and in fluid communication with the cannula passageway wall portion and (b) within the body passageway, the septum also having a septum top surface that includes a septum top surface portion accessible to an injection needle, the septum top surface portion being defined by a septum top surface portion perimeter having a greatest width that is greater than the greatest width of the cannula; and

an inner surface that directly borders open space within the body passageway that is downstream of the septum and upstream of the cannula passageway wall portion, the inner surface having an inwardly-tapered portion.

2. The infusion device of claim 1, in which at least a portion of the septum is bounded by a portion of the body.

3. The infusion device of claim 2, in which the septum includes an outer wall extending from the septum bottom surface, the outer wall including a inwardly-tapered portion.

4. The infusion device of claim 3, in which the infusion device includes (a) a first distance between the septum top surface and the top of the body and (b) a second distance between the septum bottom surface and the bottom surface of the body, and the second distance is greater than the first distance.

5. The infusion device of claim 1, in which the septum includes an outer wall extending from the septum bottom surface, the outer wall including a inwardly-tapered portion.

6. The infusion device of claim 5, in which the infusion device includes (a) a first distance between the septum top surface and the top of the body and (b) a second distance between the septum bottom surface and the bottom surface of the body, and the second distance is greater than the first distance.

7. The infusion device of claim 1, in which the infusion device includes (a) a first distance between the septum top surface and the top of the body and (b) a second distance between the septum bottom surface and the bottom surface of the body, and the second distance is greater than the first distance.

8. The infusion device of claim 2, in which the infusion device includes (a) a first distance between the septum top surface and the top of the body and (b) a second distance between the septum bottom surface and the bottom surface of the body, and the second distance is greater than the first distance.