Insertion Device for Infusion Sets

• US 20070016129A1
• Filed: 06/29/2006
• Published: 01/18/2007
• Est. Priority Date: 12/30/2003
• Status: Active Grant

• Current Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Original Assignee: Roche Diagnostics International AG (Roche Holding AG)
• Inventors: Scheurer, Simon, Roethlisberger, Mark, Liniger, Jurg
• Granted Patent: US 8,979,800 B2
• Time in Patent Office: Days
• US Class Current: 604/93.10
• CPC Class Codes: A61M 2005/1581 Right-angle needle-type devices
• CPC Class Codes: A61M 2005/1585 Needle inserters
• 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

An insertion device for infusion sets, comprising a housing for enclosing an infusion set, a drive device for displacing the infusion set for insertion, wherein a portion of the drive device moves in an insertion direction, the movement being substantially friction-free relative to the housing.

Claims

1. An insertion device for infusion sets, said insertion device comprising a housing for enclosing an infusion set and a drive device for displacing the infusion set for insertion, wherein a portion of the drive device moves in an insertion direction, the movement being substantially friction-free relative to the housing.

2. An insertion device for piercing devices such as infusion sets, said device comprising a housing for enclosing a piercing device to be placed in the insertion device and a drive device for moving the piercing device in an insertion direction, wherein the drive device is configured such that the movement in the insertion direction takes place free of slide friction relative to the housing.

3. The insertion device as claimed in claim 2, wherein the drive device comprises a drive mechanism connected to the housing, at least one elastic means, and a drive endpiece designed to move an infusion set in an insertion direction, the drive endpiece being able to be pretensioned relative to the housing by the elastic means in such a way that the drive endpiece is moved in the insertion direction when the pretensioning is released.

4. The insertion device as claimed in claim 3, wherein the drive device comprises a lever mechanism via which the drive endpiece is moved relative to the housing.

5. The insertion device as claimed in claim 4, wherein the lever mechanism comprises portions that move in the insertion direction and is configured such that said portions are either spaced apart from the housing or do not execute any sliding movement relative to the housing.

6. The insertion device as claimed in claim 4, wherein the lever mechanism comprises leg levers connected in a rotatable manner via rotary connection members, at least some of the rotary connection members being movable in the insertion direction.

7. The insertion device as claimed in claim 6, wherein at least two first oppositely turning rotary connection members are movable in the insertion direction, and their drive movement is synchronized by the coupled rotational movement of two second positionally fixed rotary connection members, one of the first rotary connection members in each case being connected to one of the second rotary connection members via a leg lever.

8. The insertion device as claimed in claim 2, wherein the drive device comprises a drive endpiece to move an infusion set in the insertion direction, and elastic means which can be compressed counter to the insertion direction to pretension the elastic means and which expands in the insertion direction when the tension is released, the drive endpiece being on an end of the elastic means on which the infusion set is intended to emerge from the housing, and the elastic means being connected at an opposite end to the housing.

9. The insertion device as claimed in claim 8, wherein the elastic means is designed such that when the tension is released there is no expansion movement deviating from the insertion direction.

10. The insertion device as claimed in claim 8, wherein the expansion of the elastic means does not bring the elastic means into contact with the housing.

11. The insertion device as claimed in claim 4, wherein the lever mechanism is articulated on the housing at least laterally from the insertion direction to guide the drive endpiece in the insertion direction.

12. The insertion device as claimed in claim 11, wherein the lever mechanism comprises a lemniscate guide which guides the drive member in the insertion direction.

13. The insertion device as claimed in claim 11, wherein the lever mechanism is articulated on the housing in at least at one position and the drive endpiece rotates about said position via at least one leg lever without making contact with the housing.

14. The insertion device as claimed in claim 2, the drive device comprising elastic means connecting the housing and a drive endpiece, said elastic means elastically expanded when the drive endpiece is moved counter to the insertion direction.

15. The insertion device as claimed in claim 14, wherein the elastic means comprises several expandable bands arranged substantially symmetrically around the drive endpiece to maintain the drive endpiece on an intended path of movement in the insertion direction, the drive endpiece remaining at a distance from the housing on the path of movement.

16. The insertion device as claimed in claim 15, wherein the drive endpiece is designed for application of an infusion set.

17. The insertion device as claimed in claim 16, wherein the housing comprises an infusion set holder for application of an infusion set, the holder designed and arranged such that the drive endpiece, when moved in the insertion direction, strikes an applied infusion set out of the holder, and the drive device is designed such that, in the pretensioned state, there is no contact between applied infusion set and drive endpiece.

18. The insertion device as claimed in claim 2, comprising at least one rotary connection member on a side wall of the housing, at least one leg lever connected at a first end to the at least one rotary connection member, an elastic member for pretensioning the leg lever against the side wall, a second end of the leg lever remote from the first end for receiving an infusion set or striking an infusion set out of a holding fixture, the leg lever pivoted via at least one rotary connection member when the tension of the elastic means is removed by a release mechanism.