Inserter Device with Horizontal Moving Part

• US 20120184908A1
• Filed: 07/16/2010
• Published: 07/19/2012
• Est. Priority Date: 07/30/2009
• Status: Active Grant

• Current Assignee: Unomedical AS (ConvaTec Group Plc)
• Original Assignee: Unomedical AS (ConvaTec Group Plc)
• Inventors: Gundberg, Tomas
• Granted Patent: US 8,562,567 B2
• Time in Patent Office: Days
• US Class Current: 604/164.01
• CPC Class Codes: A61M 2005/14252 with needle insertion means
• 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 5/1413 Modular systems comprising interconnecting elements
• CPC Class Codes: A61M 5/14248 of the skin patch type
• 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

The invention concerns an insertion device for inserting a medical device or a part of medical device into the subcutaneous or intramuscular area of a patient. Insertion devices (also called inserter or injector) are commonly used in the medical field for inserting medical devices, such as infusion sets, sensors and the like, through the skin of a patient in a more or less automated fashion. The present application relates to an insertion device comprising—a penetrating member (50) comprising an inserter part provided with holding means (52) and transformation means (51), and a subcutaneous part comprising at least one part such as a cannula or a sensor for subcutaneous positioning in a patient,13 a moving part (38) comprising guiding means (39) which guiding means (39) restrict the movement of the transformation means (52) and guide the moving part (38) in a second direction which is normally linear and different from the first direction i.e. the direction of insertion, towards the injection site, and—a stationary housing (30) comprising guiding means (32) which guiding means (32) restrict the movement of the moving part (38), wherein the moving part (38) comprises at least two guiding means (39a, 39b) completely separated from each other which guiding means during full insertion of at least part of the subcutaneous part of the penetrating member (50) each are in engagement with separate parts of the transformation means (51a, 51b) during at least part of the full insertion.

Claims

1. An insertion device comprising

a penetrating member (50) comprising an inserter part provided with holding means (52) and transformation means (51), and a subcutaneous part comprising at least one part such as a cannula or a sensor for subcutaneous positioning in a patient,

a moving part (38) comprising guiding means (39) which guiding means (39) restrict the movement of the transformation means (52) and guide the moving part (38) in a second direction which is normally linear and different from the first direction i.e. the direction of insertion, towards the injection site, and

a stationary housing (30) comprising guiding means (32) which guiding means (32) restrict the movement of the moving part (38),

characterized in that the moving part (38) comprises at least two guiding means (39a, 39b) completely separated from each other which guiding means during full insertion of at least part of the subcutaneous part of the penetrating member (50) each are in engagement with separate parts of the transformation means (51a, 51b) during at least part of the full insertion.

2. An insertion device according to claim 1, wherein the guiding means (39a, 39b) of the moving part (38) comprises at least two tracks formed in the moving part (38).

3. An insertion device according to claim 1 or 2, wherein the at least two tracks formed in the moving part (38) are parallel openings in the moving part (38).

4. An insertion device according to claim 1, 2 or 3, wherein the at least two tracks formed in the moving part (38) have each their separate starting point displaced relative to each other in the direction of insertion and each their separate ending point displaced relative to each other in the direction of insertion.

5. An insertion device according to claim 1 or 2, wherein the transformation means (51a, 51b) comprises at least two protruding parts.

6. An insertion device according to any preceding claim, where the first direction form an angle β

to the surface in which the penetrating member (50) is to be inserted, and where 30°

≦

β

≦

90°

.

7. An insertion device according to any preceding claim, where the direction of the moving part (38) during insertion is essentially parallel to the surface on which it is mounted.

8. An insertion device according to any preceding claim, wherein the insertion device (1) before insertion of the penetrating member (50) is attached to a base part (100) which base part (100) can be fastened to the surface where the penetrating member (50) is to be inserted and the penetrating member (50) is brought in contact with or passes through the base part upon insertion.

9. An insertion device according to any preceding claim, wherein the penetrating member (50) is attached to a body (24) holding a cannula (22) which body (24) comprises retention means (23) securing the body (24) and the cannula (22) at the surface of insertion.

10. An insertion device according to claim 9, wherein said retention means (23) interact with interacting means (102) on the base part (100) upon insertion and retain the body (24) of the penetrating member (50) to the base part (100).

11. An insertion device according to any of the preceding claims, wherein an energy storing member (45) provides the energy required for moving the moving part (38) from a start position to a stop position.

12. An insertion device according to any of the preceding claims, wherein the housing (30) comprises retention means (31) retaining the moving part (38) in a start position, the moving part (38) comprises locking means (28) interacting with the retaining means (31) in the start position and the activation part (11) comprises interaction means (41) interacting with the locking means (28) upon activation.

13. An insertion device according to claim 12, wherein the locking means (28) is released from a locked position through interaction of the interaction means (41) of the activation part (11).

14. An insertion device according to claim 13, wherein the locking means (28) has the form of a hook provided with an inclined surface pointing in the direction opposite to the forward movement of the activation part (11) and the retention means (31) is a part protruding from the housing which can be caught by the hook formed by the locking means (28).

15. An insertion device according to any of the preceding claims, wherein a base part (100) is fastened to the mounting surface and the insertion device (10) comprises means (14, 29, 35, 36) which means provide fastening of the insertion device (10) to the base part (100) before insertion and non-fastening of the insertion device (10) to the base part (100) upon insertion of the cannula (22).