Infusion device

• US 7,704,228 B2
• Filed: 09/18/2006
• Issued: 04/27/2010
• 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.
• Primary Examiner(s): Lucchesi; Nicholas D
• Assistant Examiner(s): Stigell; Theodore J
• Application Number:
  US11/532,845
• Publication Number:
  US 20070049876A1
• Time in Patent Office: 1,317 Days
• Field of Search: 604/93.01, 604/174, 604/180, 604/244
• US Class Current: 604/93.01
• 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 bottom, and an outer perimeter;

an adhesive laminate member attached to the bottom;

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

the cannula having a cannula passageway defined by a cannula passageway wall, the cannula passageway having a greatest cannula passageway width, the cannula passageway wall having an inwardly-tapered portion that will be above the patient'"'"'s skin when the infusion device is mounted on the patient and the adhesive laminate member is in contact with the patient'"'"'s skin;

a self-sealing septum positioned within the body passageway, the self-sealing septum having a septum top surface that includes a septum top surface portion that is 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 cannula passageway width; and

an inner surface that directly borders open space within the body passageway that is downstream of the septum and upstream of the inwardly-tapered cannula passageway wall portion, the inner surface defining a first inner surface perimeter positioned in a first plane that is perpendicular to an axis centered in the body passageway, the inner surface also defining a second inner surface perimeter positioned in a second plane that is parallel to and downstream of the first plane, the first inner surface perimeter defining a first cross-sectional area, the second inner surface perimeter defining a second cross-sectional area, the first cross-sectional area being greater than the second cross-sectional area.

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

3. The infusion device of claim 1, in which the body includes a top, 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 bottommost portion of the septum and the bottom 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.