INSERTION DEVICE FOR INSERTION HEADS AND INFUSION SETS

• US 20090216215A1
• Filed: 02/24/2009
• Published: 08/27/2009
• Est. Priority Date: 08/24/2006
• Status: Active Grant

• Current Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Original Assignee: Roche Diagnostics International AG (Roche Holding AG)
• Inventors: Scheurer, Simon, Thalmann, Christian, Wyss, Martin
• Granted Patent: US 8,870,822 B2
• Time in Patent Office: Days
• US Class Current: 604/506
• 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 5/158 Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
• CPC Class Codes: A61M 5/3287 Accessories for bringing the needle into the body; Automatic needle insertion A61M5/20, A61M5/31525 take precedence

Abstract

An insertion device for applying an infusion set to the body of a patient, wherein the device has two actuation members which have to be actuated simultaneously to trigger an insertion movement by which a cannula of the infusion set is introduced into the body and wherein, in some embodiments, one of the actuation members is a securing slide including a contact face to be placed on the body of the patient, the securing slide being actuated by the insertion device being pressed, via the contact face, against the body of the patient.

Claims

1. A insertion device for an insertion head with at least one of an infusion cannula or a puncturing tip for introduction into the body of a patient, the insertion device comprising:

a) at least one contact face for placing on an application site on the body of the patient for application of the insertion head;

b) retention means with which the insertion head that is to be applied is temporarily held on the insertion device;

c) drive means for effecting an insertion movement of the insertion head relative to the contact face from a first position in which the insertion head is held by the retention means such that the infusion cannula or the puncturing tip is set back relative to the contact face to a second position in which the infusion cannula or the puncturing tip protrudes beyond the contact face to permit introduction of the infusion cannula or of the puncturing tip into the body of the patient when the insertion movement is executed with the contact face of the insertion device placed on the body; and

d) at least two actuation members which have to be actuated simultaneously to trigger the insertion movement, wherein a first of the actuation members is actuated by the contact face being pressed against the body of the patient.

2. The insertion device according to claim 1, wherein, when the pressing actuating force ceases, the actuation members automatically go back to an unactuated state.

3. The insertion device according to claim 1, wherein one of the actuation members is one of a slide-shaped or button-shaped element, which comprises the contact face.

4. The insertion device according to claim 3, wherein the other of the actuation members is a button-shaped element which, when a user presses it with a finger tip is actuated transversely to the direction in which the insertion device is pressed onto the body of the patient.

5. The insertion device according to claim 1, wherein the actuation members are actuable with one hand to permit one-handed triggering of the insertion movement.

6. The insertion device according to claim 1, wherein the drive means comprises at least one energy-storing element for providing the drive energy for the insertion movement

7. The insertion device according to claim 6, wherein the at least one energy storing element is selected from a group consisting of a helical spring, leg spring or leaf spring made of metal or rubber.

8. The insertion device according to claim 6, wherein the at least one energy-storing element can be tensioned repeatedly by a user.

9. The insertion device according to claim 8, wherein the drive means comprises a thrust element for transmitting the drive energy to the insertion head and wherein by displacing the thrust element counter to the direction of the insertion movement and subsequently locking it with locking means that can be released by the actuation members the energy-storing element is tensioned.

10. The insertion device according to claim 9, wherein the insertion device comprises a housing, and the thrust element is connected to a grip part which can be grasped by hand and which is movable relative to the housing for tensioning the energy-storing element.

11. The insertion device according to claim 9, wherein the insertion device comprises a housing with two housing parts which can be pushed together and which are coupled to the thrust element such that the latter can be displaced by a pushing-together of the two housing parts to tension the energy-storing element.

12. The insertion device according to claim 11, wherein the at least two actuation members are operatively connected to one another such that, by actuating one actuation member, a blocking of the other actuation member is cancelled.

13. The insertion device according to claim 12, wherein, with the energy-storing element in the tensioned state, the two housing parts can be drawn apart from one another again, and, to form an actuation member, one of the two housing parts is coupled onto a locking means with which another actuation member is blocked, such that this blocking can be cancelled by renewed, partial pushing-together of the two housing parts.

14. The insertion device according to claim 13, wherein the thrust element, the locking means and the housing part, connected or connectable to the latter, are designed in such a way that the coupling between the locking means and the housing part is cancelled again upon execution of the insertion movement by the thrust element.

15. The insertion device according to claim 14, wherein the direction of the insertion movement of the insertion head is perpendicular to a plane formed by the contact face of the insertion device.

16. The insertion device according to claim 14, wherein the direction of the insertion movement of the insertion head is non-perpendicular, in the range of 20°

to 45°

, to a plane containing the contact face of the insertion device.

17. An arrangement comprising an insertion device and an insertion head receivable in said insertion device, the insertion device comprising:

a) at least one contact face for placing the insertion device on an application site on the body of the patient for application of the insertion head;

b) a retainer with which the insertion head that is to be applied is temporarily held on the insertion device;

c) a drive for effecting an insertion movement of the insertion head relative to the contact face from a first position in which the insertion head is held by the retainer such that the infusion cannula or the puncturing tip is set back relative to the contact face to a second position in which the infusion cannula or the puncturing tip protrudes beyond the contact face to permit introduction of the infusion cannula or of the puncturing tip into the body of the patient when the insertion movement is executed with the contact face of the insertion device placed on the body; and

d) at least two actuation members which have to be actuated simultaneously to trigger the insertion movement, wherein a first of the actuation members is designed such that it can be actuated by the contact face being pressed onto the body of the patient.

18. An insertion device for applying an infusion set to the body of a patient, the device comprising two actuation members which have to be actuated simultaneously to trigger an insertion movement of the infusion set, wherein one of the actuation members is a securing slide including a contact face to be placed on the body of the patient, the securing slide being actuated by the insertion device being pressed, via the contact face, against the body of the patient.

19. A method for applying an insertion head to the body of a patient using an insertion device, wherein the insertion head is one of an infusion set, port or sensor arrangement and the insertion device comprises at least one contact face for placing the insertion device on an application site on the body of the patient for application of the insertion head, a retainer with which the insertion head that is to be applied is temporarily held on the insertion device, a drive for effecting an insertion movement of the insertion head relative to the contact face from a first position in which the insertion head is held by the retainer such that the infusion cannula or the puncturing tip is set back relative to the contact face to a second position in which the infusion cannula or the puncturing tip protrudes beyond the contact face to permit introduction of the infusion cannula or of the puncturing tip into the body of the patient when the insertion movement is executed with the contact face of the insertion device placed on the body;

and at least two actuation members which have to be actuated simultaneously to trigger the insertion movement, wherein a first of the actuation members is designed such that it can be actuated by the contact face being pressed onto the body of the patient, the method comprising the following steps;

a) placing an insertion head with an infusion cannula or a puncturing tip into the retainer in the first position;

b) arranging and pressing the insertion device via the contact face onto the desired application site on the body of the patient such that the infusion cannula or the puncturing tip of the insertion head can penetrate into the body during the insertion movement and actuating the first actuation member; and

c) actuating the second and, if present, any further actuation members for triggering the insertion movement.

20. The method according to claim 19, wherein the arranging and pressing of the insertion device and the actuating of the second and, if present, also any further actuation members is done with one hand.

21. The method according to claim 20, wherein the insertion device is pressed onto the desired application site in the direction of the insertion movement.

22. The method according to claim 21, wherein the second and, if present, any further actuation members are each actuated by the user pressing with a finger tip in a direction transverse to the direction in which the insertion device is pressed onto the body of the patient.