Infusion device

• US 8,262,627 B2
• Filed: 09/18/2006
• Issued: 09/11/2012
• 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): STIGELL, THEODORE J
• Application Number:
  US11/532,836
• Publication Number:
  US 20070093757A1
• Time in Patent Office: 2,185 Days
• Field of Search: 604/93.01, 604/174, 604/180, 604/244, 604/246
• US Class Current: 604/244
• 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 single inlet port that provides the body'"'"'s only access for delivering medication to the body passageway, a top, a bottom, and an accessible surface that generally gets broader from the top to the bottom;

an adhesive laminate member coupled to the bottom of the body;

a polymer cannula having a portion extending from the body, including a portion that will be beneath a patient'"'"'s skin surface when the infusion device is used, the cannula also having a portion closer to the top of the body than is the adhesive laminate member; and

a septum positioned within the body passageway but not in contact with the cannula, the septum having a top, a bottom, and an outer surface that includes an inwardly-tapered portion;

the septum also having a cross-section positioned parallel to an axis that is that is parallel to and centered in a portion of the body passageway, the septum cross-section having (a) a first dimension that is parallel to the axis and (b) a second dimension that is perpendicular to the axis and greater than the first dimension;

the body passageway having an inwardly-tapered portion that is closer to the cannula than is the top of the septum;

the infusion device being configured such that the portion of the cannula that will be beneath the patient'"'"'s skin surface when the infusion device is used will extend a fixed length beneath the skin surface during normal use of the infusion device.

2. The infusion device of claim 1, in which the infusion device includes (a) a first greatest distance parallel to the axis between the top of the septum and the top of the body and (b) a second greatest distance between the bottom of the septum and the bottom of the body, the second greatest distance being greater than the first greatest distance.

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