Infusion set for a fluid pump

• US 9,173,996 B2
• Filed: 09/21/2006
• Issued: 11/03/2015
• Est. Priority Date: 05/18/2001
• Status: Active Grant

• Current Assignee: Deka Products Limited Partnership
• Original Assignee: Deka Products Limited Partnership
• Inventors: Gray, Larry B., Hamilton, Jared, Lanigan, Richard, Tracey, Brian
• Primary Examiner(s): Desanto, Matthew F
• Application Number:
  US11/533,882
• Publication Number:
  US 20070049870A1
• Time in Patent Office: 3,330 Days
• Field of Search: 604 65- 67, 604/131, 604151-155, 604/183, 604533-535
• US Class Current: 1/1
• CPC Class Codes: A61M 2005/14573 with a replaceable reservoir for quick connection/disconnection with a driving system
• CPC Class Codes: A61M 2005/1581 Right-angle needle-type devices
• CPC Class Codes: A61M 2005/1585 Needle inserters
• CPC Class Codes: A61M 2005/1587 suitable for being connected to an infusion line after insertion into a patient
• CPC Class Codes: A61M 25/0612 Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders
• CPC Class Codes: A61M 39/1011 Locking means for securing connection; Additional tamper safeties A61M39/16 takes precedence
• CPC Class Codes: A61M 39/14 for connecting tubes having sealed ends needle sets A61M5/162; having valves closing automatically on disconnection of line A61M39/26
• CPC Class Codes: A61M 5/14 Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
• CPC Class Codes: A61M 5/142 Pressure infusion, e.g. using pumps
• CPC Class Codes: A61M 5/1452 pressurised by means of pistons
• CPC Class Codes: A61M 5/1456 with a replaceable reservoir comprising a piston rod to be moved into the reservoir, e.g. the piston rod is part of the removable reservoir
• CPC Class Codes: A61M 5/158 Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body

Abstract

A medical device for delivery of a fluid to a patient from a line terminating in a tubing needle. The medical device includes a cannula assembly for coupling the fluid into a cannula that is inserted into the patient. The cannula assembly has a first locking element disposed in a fixed position with respect to the cannula. Coupling the line to the cannula assembly is an infusion flap. The infusion flap includes a second locking element for engaging the first locking element of the cannula assembly and a lift tab for disconnecting the infusion flap from the cannula assembly. Coupling of the first and second locking elements requires initial mating of the infusion flap and cannula assembly followed by locking through rotation of the infusion flap with respect to the cannula assembly.

Claims

1. A medical device comprising:

a pump housing including a barrel therein, the barrel having a longitudinal axis and a locking tab in the pump housing; and

a hub for retaining a replaceable reservoir in the barrel in the pump housing, the hub comprising;

a first end including a first end face disposed transverse to a hub axis, the first end face including a port disposed along the hub axis, the port having tubing affixed thereto for passage of fluid from the reservoir, the first end face having formed therein a grip to facilitate rotation of the hub about the hub axis;

a second end including a first male element having an external engagement feature for engaging with a corresponding female element having an internal engagement feature on the reservoir to lock the hub to the reservoir and a second male element for engaging with a corresponding element of the pump housing to retain the reservoir in the barrel when (a) the hub is placed in the pump housing so that the hub axis corresponds with the barrel axis and (b) the hub is rotated; and

a controller including a mechanical protrusion that is a flange and is adapted to dislodge the locking tab on the barrel in the pump housing to transition a fluid delivery device within the pump housing from a reservoir load position to an operate position upon a rotation of the hub about the hub axis.

2. A hub according to claim 1 wherein the grip is a cam.

3. The hub according to claim 1, additionally comprising a female luer connection disposed within the first male element for engaging a corresponding male luer connection of the reservoir.

4. The hub according to claim 1, wherein the controller allows the barrel to rotate to bring rod threads of a plunger rod disposed within the barrel into and out of mechanical engagement with a drive screw of the fluid delivery device.

5. A medical device comprising:

a pump housing including a barrel therein, the barrel having a longitudinal axis and a locking tab in the pump housing; and

a hub for retaining a replaceable reservoir in the barrel in the pump housing, the hub comprising;

a first end including a first end face disposed transverse to a hub axis, the first end face including a port disposed along the hub axis, the port adapted to have tubing attached thereto for passage of fluid from the reservoir, the first end face having formed therein a grip to facilitate rotation of the hub about the hub axis;

a second end including a first male element having an external engagement feature for engaging with a corresponding female element having an internal engagement feature on the reservoir to lock the hub to the reservoir and a second male element for engaging with a corresponding element of the pump housing to retain the reservoir in the barrel when (a) the hub is placed in the pump housing so that the hub axis corresponds with the barrel axis and (b) the hub is rotated; and

a controller including a mechanical protrusion that is a flange and is adapted to dislodge the locking tab on the barrel in the pump housing to transition a fluid delivery device within the pump housing from a reservoir load position to an operate position upon a rotation of the hub about the hub axis.

6. The hub according to claim 5, wherein the port is adapted to have the tubing removably attached thereto.

7. The hub according to claim 6, wherein the port includes a luer connection for attaching the tubing thereto.

8. The hub according to claim 5, wherein the grip is a cam.

9. The hub according to claim 5, additionally comprising a female luer connection disposed within the first male element for engaging a corresponding male luer connection of the reservoir.

10. The hub according to claim 5, wherein the controller allows the barrel to rotate to bring rod threads of a plunger rod disposed within the barrel into and out of mechanical engagement with a drive screw of the fluid delivery device.