Invisible needle

• US 20070093754A1
• Filed: 09/11/2006
• Published: 04/26/2007
• Est. Priority Date: 09/12/2005
• Status: Active Grant

• Current Assignee: Unomedical A/S
• Original Assignee: Unomedical A/S
• Inventors: Mathiasen, Orla, Mogensen, Lasse
• Granted Patent: US 10,369,277 B2
• Time in Patent Office: Days
• US Class Current: 604/164.01
• 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 39/02 Access sites
• CPC Class Codes: A61M 5/158 Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
• CPC Class Codes: A61M 5/326 Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user

Abstract

The invention relates to an inserter for an infusion set for intermittent or continuous administration of a therapeutical substance, such as e.g. insulin. The inserter comprises a needle hub comprising an insertion needle and two spring units assuring automatic insertion and automatic retraction of the insertion needle.

The inserter comprises a housing (1), a carrier body (2) carrying an infusion part (8), a needle hub (3), a first moving unit (4) bringing the carrier body (2) to a forward position and a second moving unit (5) bringing the carrier body (2) to a retracted position. The inserter is characterized in that it has means for activation which should be activated at least once in order to bring the carrier body (2) from a retracted to a forward position, and back from the forward to the retracted position.

Claims

1. An inserter for an infusion set comprising a housing (1), a carrier body (2) carrying an infusion part (8), a needle hub (3), a first moving unit (4) bringing the carrier body (2) to a forward position and a second moving unit (5) bringing the carrier body (2) to a retracted position, characterized in that the first moving unit (4) and the second moving unit (5) are placed at least partly parallel to each other.

2. The inserter of claim 1, wherein the first and the second moving unit (4, 5) both are connected to a distal surface of the carrier body (2).

3. The inserter of claim 1, wherein the first moving unit (4) and the second moving unit (5) are placed inside the housing (1).

4. The inserter of claim 1, wherein

the housing (1) is provided with guiding means (1a, 1b) on the internal surface for guiding the movement of the carrier body (2),

the needle hub (3) comprises an insertion needle (6) for piercing of the skin,

the carrier body (2) has at least one retracted and at least one forward position, and in the retracted position before insertion, the carrier body (2) and the needle hub (3) are locked to each other,

the carrier body (2) is provided with guiding means (2a) corresponding to the guiding means (1a, 1b) of the housing (1),

the first moving unit (4) is biasing the housing (1) and the carrier body (2) and the second moving unit (5) is biasing the carrier body (2) and the needle hub (3).

5. The inserter of claim 1, wherein the carrier body (2) stays in a forward position after insertion of the needle (6).

6. The inserter of claim 1, wherein the infusion part (8) is provided with an adhesive proximal surface.

7. The inserter of claim 1, wherein the infusion part (8) is provided with an adhesive distal surface.

8. The inserter of claim 4, wherein an adhesive pad (7) is releasably fastened to a proximal part of the housing (1).

9. The inserter of claim 8, wherein the adhesive pad (7) covers the proximal opening of the housing (1) through which the infusion part (8) is conveyed.

10. The inserter of claim 8, wherein the first moving unit (4) and the second moving unit (5) each comprises a compression spring.

11. The inserter of claim 4, wherein the carrier body (2) is provided with at least one inclined surface which surface is in contact with a rotating part (3a) of the needle hub (3), which rotating part (3a) can rotate in relation to a main part of the needle hub (3) to which the insertion needle is fastened, and the housing (1) is provided with a member (1a) preventing the rotating part (3a) of the needle hub (3) from rotating when the carrier body (2) is in a retracted position.