Cannula device

• US 20060036214A1
• Filed: 12/23/2004
• Published: 02/16/2006
• Est. Priority Date: 08/10/2004
• Status: Active Grant

• Current Assignee: Unomedical A/S
• Original Assignee: Unomedical A/S
• Inventors: Mogensen, Lasse Wesltoft, Goransson, Magnus Walter
• Granted Patent: US 8,062,250 B2
• Time in Patent Office: Days
• US Class Current: 604/164.10
• 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 5/158 Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body

Abstract

A cannula device for infusion sets is provided. The cannula device includes a housing and at least one membrane mounted to the housing and adapted for receiving a piercing member of a connector. The cannula device further includes a cannula mounted to the housing. The cannula device is adapted to removably attach to a base part of an infusion set. The cannula device can receive the piercing member from a first receiving direction and from a second receiving direction different from the first receiving direction, providing fluid communication between the piercing member and the cannula mounted to the housing.

Claims

1. A cannula device for infusion sets, said cannula device comprising:

a housing;

at least one membrane mounted to said housing and adapted to receive a piercing member of a connector; and

a cannula mounted to said housing;

wherein said cannula device is adapted to removably attach to a base part of an infusion set and wherein said cannula device can receive said piercing member from a first receiving direction, and from a second receiving direction different from said first direction providing fluid communication between said piercing member and said cannula.

2. The cannula device according to claim 1 wherein said housing and said at least one membrane together define at least one cavity.

3. The cannula device according to claim 1 wherein said at least one membrane further comprises a first membrane oriented generally perpendicular to said first receiving direction and a second membrane oriented generally perpendicular to said second receiving direction.

4. The cannula device according to claim 1 wherein said at least one membrane further comprises a single membrane oriented to intersect both said first and second receiving directions.

5. The cannula device according to claim 1 wherein an angle between the first and the second receiving directions is at least 45°

.

6. The cannula device according to claim 5 wherein said angle is at least 60°

.

7. The cannula device of claim 5 wherein said angle is at least 75°

.

8. The cannula device of claim 5 wherein said angle is at least 85°

.

9. The cannula device according to claim 1 wherein the cannula device is adapted to receive the piercing member from a third direction.

10. The cannula device according to claim 9 wherein an angle between said first direction and said third direction is between about 5°

and about 175°

.

11. The cannula device of claim 9 wherein an angle between said first direction and said third direction angle is between about 30°

and about 150°

.

12. The cannula device according to claim 1 wherein said at least one membrane is self-sealing.

13. The cannula device according to claim 12, wherein said at least one membrane is made of silicone.

14. The cannula device according to claim 1 wherein said housing further comprises guiding members for positioning said device on said base part.

15. The cannula device according to claim 1 wherein said housing further comprises locking members for removably locking said device to said base part.

16. The cannula device according to claim 15, wherein said locking members further comprise means for disengaging said locking members.

17. The cannula device according to claim 14, wherein the guiding members guide both the assembling of the cannula device with a base part and coupling to the base part one of a connector and an inserter.

18. The cannula device according to claim 1, wherein said housing defines a plurality of cavities.

19. The cannula device according to claim 1 wherein said cannula device has a generally cylindrical shape.

20. The cannula device according to claim 1, wherein said cannula device comprises a cavity which is closed by said at least one membrane.

21. A cannula device for mounting to a base part of an infusion set, said device comprising:

a housing and at least one membrane adapted to receive a piercing member; and

a cannula mounted to said housing;

wherein said cannula device is adapted to removably attach to said base part and wherein said cannula device can receive said piercing member of a connector from a first receiving direction and from a second receiving direction being different from said first direction providing fluid communication between said piercing member and said cannula.

22. The cannula device according to claim 21 wherein said housing and said at least one membrane together define at least one cavity.

23. The cannula device according to claim 21 wherein said cannula device can be attached to said base part at different levels with respect to said base part.

24. The cannula device according to claim 21 wherein said base part comprises attachment members adapted for removably attaching said cannula device to said base part in more than one direction with respect to said base part.

25. The cannula device according to claim 21 comprises guiding members adapted to engage with guiding members of said cannula device for positioning said cannula device on said base part.

26. The cannula device according to claim 21 further comprising locking members.

27. The cannula device according to claim 26 wherein said locking members removably connect said cannula device to said base part.

28. The cannula device according to claim 21 wherein said locking members removably connect a connector to said base part.

29. The cannula device according to claim 21 wherein said cannula device is selectively rotatable relative to said base part.

30. The cannula device according to claim 29 further comprising hinges for attaching said cannula device to said base part.

31. An infusion set comprising:

a base part;

a cannula device removably connected to said base part, said cannula device comprising a housing having at least one membrane secured thereto and a cannula mounted to said housing;

wherein said cannula device is adapted to receive a piercing member of a connector from a first receiving direction and from a second receiving direction being different from said first direction, providing fluid communication between said piercing member and said cannula.

32. The infusion set of claim 31 further comprising a connector for connecting said base part with a medical device through a conduit, said connector comprising a piercing member being in fluid communication with said conduit.

33. The infusion set according to claim 31 wherein said housing and said at least one membrane together define at least one cavity.

34. The infusion set according to claim 31 wherein said base part further comprises a first set of guiding members and a first set of locking members for removably locking said connector to said base part.

35. The infusion set according to claim 34 wherein said connector comprises a second set of guiding members adapted to fit with said first set of guiding members and a second set of locking members adapted to releasably engage with said first set of locking members.

36. The infusion set according to claim 31 wherein said cannula device is selectively rotatable relative to said base part.

37. A base part comprising a plurality of sets of guiding members adapted to removably engage with an exchangeable cannula device, said device comprising a corresponding plurality of sets of guiding members so that said exchangeable cannula device may be engaged with said base part in more than one orientation, said exchangeable cannula device comprising a housing and at least one membrane together defining at least one cavity adapted for receiving a piercing member of a connector, the cannula device further comprising a cannula mounted in said housing and being in fluid communication with said at least one cavity, said exchangeable cannula device being capable of receiving the piercing member from a first receiving direction and additionally or from at least one second receiving direction different from said first direction providing fluid communication between the piercing member and the at least one cavity.

38. The base part according to claim 37 further comprising positioning members adapted to position said cannula device in a plurality of positions with respect to a bottom position on said base part wherein multiple lengths of exposed cannula may be used with the same cannula device.

39. A cannula device for infusion sets comprising a housing and at least one membrane together defining at least one cavity adapted for receiving a piercing member of a connector, the cannula device further comprising a cannula mounted to said housing and being in fluid communication with said at least one cavity, wherein said device has means for attaching the cannula device to corresponding means of a base part and can receive the piercing member from a first receiving direction and additionally can receive said piercing member from a second receiving direction different from said first direction, providing fluid communication between the piercing member and the at least one cavity.

40. The cannula device of claim 39 wherein said at least one membrane further comprises a first membrane oriented generally perpendicular to said first receiving direction and a second membrane oriented generally perpendicular to said second direction.

41. The cannula device of claim 39 wherein said at least one membrane further comprises a single membrane oriented to intersect both said first and second receiving directions.

42. An infusion set comprising a base part which comprises a cannula device for insertion into a patient, said cannula device comprising a housing and at least one membrane together defining at least one cavity adapted for receiving a piercing member of a connector, the cannula device further comprising a cannula mounted to said housing and being in fluid communication with said at least one cavity, wherein said device has means for attaching the cannula device to corresponding means of a base part and can receive the piercing member from a first receiving direction and additionally can receive said piercing member from a second receiving direction different from said first direction providing fluid communication between the piercing member and the at least one cavity and that said cannula device comprises a membrane for each of the receiving directions;

the angle between the first and the second direction being at least 45°

;

said infusion set further comprising a connector for connecting the base part with a medical device through a conduit, said connector comprises a piercing member being in fluid communication with said tube;

the base part optionally comprises a first set of guiding mean and first set of locking means for locking the connector to the base part;

said connector optionally comprises a second set of guiding means adapted to fit with the first set of guiding means and a second set of locking means adapted engage with the first set of locking means in a releasable manner.

43. An infusion set comprising a base part which comprises a cannula device for insertion into a patient, said cannula device comprising a housing and at least one membrane together defining at least one cavity adapted for receiving a piercing member, the cannula device further comprising a cannula mounted to said housing and being in fluid communication with said at least one cavity, wherein said device has means for attaching the cannula device to corresponding means of a base part and can receive the piercing member from a first receiving direction and additionally can receive said piercing member from a second receiving direction different from said first direction providing fluid communication between the piercing member and the at least one cavity and that said cannula device comprises a membrane for each of the receiving directions;

said infusion set further comprising a connector for connecting the base part with a medical device through a conduit, said connector comprises a piercing member being in fluid communication with said conduit;

the base part optionally comprising a first set of guiding mean and first set of locking means for locking the connector to the base part;

said connector optionally comprises a second set of guiding means adapted to fit with the first set of guiding means and a second set of locking means adapted engage with the first set of locking means in a releasable manner.

44. An infusion set comprising a base part having an exchangeable cannula device for insertion into a patient and a connector for connecting the base part with a medical device through a conduit;

said connector comprising a piercing member being in fluid communication with said tube;

said base part having multiple sets of guiding means so as to allow it to engage with the exchangeable cannula device having matching guiding means in such manner, that the exchangeable cannula device may be engaged in more than one possible orientation of the main axis of the cannula device;

said exchangeable cannula device comprising a housing and at least one membrane together defining at least one cavity adapted for receiving a piercing member, the cannula device further comprising a cannula mounted to said housing and being in fluid communication with said at least one cavity, said exchangeable cannula device being capable of receiving the piercing member from a first receiving direction and additionally can receive said piercing member from at least one second receiving direction different from said first direction providing fluid communication between the piercing member and the at least one cavity, said base part optionally comprising stoppers which allow the cannula device to be locked in multiple heights and/or distances from a bottom position, thus allowing an infusion set with multiple lengths of exposed cannula using the same cannula device;

said base part optionally comprising a further set of guiding mean and first set of locking means for locking the connector to the base part;

said connector optionally comprising a second set of guiding means adapted to fit with the first set of guiding means and a second set of locking means adapted engage with the first set of locking means in a releasable manner;

said matching guiding means of the cannula device guides both the assembling of the cannula devices assembling with a base part and the coupling with a connector and/or an inserter.

45. A cannula device for mounting to a base part of an infusion set, said device comprising:

a housing and at least one membrane adapted to receive a piercing member of a connector; and

a cannula mounted to said housing;

wherein said housing is adapted to be repositionable relative to said base part in more than one orientation with respect to said base part.

46. The cannula device of claim 45 wherein said housing further comprises guiding members for position said device on said base part.

47. The cannula device of claim 46 wherein said housing is repositionable at different levels with respect to said base part for changing the distance said cannula is inserted into the skin of a patient.

48. The cannula device of claim 46 wherein said housing is repositionable within said housing in at least a first direction and a second direction wherein an angle between said first direction and said second direction is at least 45°

.