Medical Apparatus Having Infusion and Detection Capabilities

• US 20150119660A2
• Filed: 08/28/2012
• Published: 04/30/2015
• Est. Priority Date: 10/11/2011
• Status: Abandoned Application

• Current Assignee: Medizinische Universitaet Graz
• Original Assignee: Medizinische Universitaet Graz
• Inventors: Regittnig, Werner
• Application Number:
  US14/351,183
• Publication Number:
  US 20140288399A1
• Time in Patent Office: Days
• US Class Current: 600/309
• CPC Class Codes: A61B 5/14503 invasive, e.g. introduced into the body by a catheter or needle or using implanted sensors A61B5/1459, A61B5/1464, A61B5/1473, A61B5/1482, A61B5/14865 take precedence
• 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 2005/1588 having means for monitoring, controlling or visual inspection, e.g. for patency check, avoiding extravasation
• CPC Class Codes: A61M 2005/1726 the body parameters being measured at, or proximate to, the infusion site
• 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
• CPC Class Codes: A61M 5/1723 using feedback of body parameters, e.g. blood-sugar, pressure measurement of body parameters A61B5/00

Abstract

A medical apparatus for supplying a medication fluid into an organism and for detecting a substance of the organism is disclosed. The medical apparatus has a casing, cannula, and an insertion needle. The casing has a chamber accommodating the medication fluid and an opening in fluid communication with the chamber. The cannula has a lumen in fluid communication with the chamber. The insertion needle has a receptacle. A portion of the insertion needle is removably arrangeable within the lumen. The receptacle is configured to at least partially receive a sensor system for detecting the substance of the organism. A seal is adapted to annularly sealingly surround a portion of the sensor system when the insertion needle is removed from the opening and the portion of the sensor system is arranged in the opening.

Claims

1. Medical apparatus for supplying a medication fluid into an organism and for detecting a substance of the organism, the medical apparatus comprising:

a casing having a chamber for accommodating the medication fluid and having an opening in fluid communication with the chamber;

a cannula having a lumen being in fluid communication with the chamber;

an insertion needle having a receptacle, wherein at least a portion of the insertion needle is removably arrangeable within the lumen of the cannula;

a sensor system for detecting the substance of the organism, wherein the receptacle of the insertion needle is configured to removably at least partially receive the sensor system; and

a seal, wherein the seal is adapted to annularly sealingly surround the insertion needle, when the insertion needle is arranged in the opening of the sensor system, when the insertion needle is removed from the opening and the portion of the sensor system is arranged in the opening.

2. Medical apparatus according to claim 1, wherein the seal is adapted to seal the chamber from fluid communication via the opening when the insertion needle is arranged in the opening,

wherein the seal is adapted to seal the chamber from fluid communication via the opening when the insertion needle is removed from the opening and a portion of the sensor system is arranged in the opening;

wherein the seal comprises in particular a deformable biocompatible material, further in particular a silicone elastomer.

3. Medical apparatus according to claim 1, wherein the seal surrounds the insertion needle at the opening in an annular manner, when the insertion needle is arranged in the opening and wherein the seal surrounds the portion of the sensor system in an annular manner, when the portion of the sensor system is arranged in the opening.

4. Medical apparatus according to claim 1, wherein the portion of the sensor system arranged in the opening comprises a sensor cable for leading a sensor signal through the opening to an outside of the chamber.

5. Medical apparatus according to claim 1, wherein the cannula is fixed at the casing by an adhesive or by using a bushing.

6. Medical apparatus according to claim 1, wherein the cannula is flexible and comprises an insertion portion protruding from the casing away from the chamber.

7. Medical apparatus according to claim 6, wherein the sensor system comprises a detection portion protruding beyond the insertion portion of the cannula away from the chamber, wherein the detection portion is configured to detect the substance, wherein the insertion portion of the cannula comprises at least one entry port at an outer surface of the insertion portion of the cannula, the entry port allowing entry of the substance into the lumen of the cannula, the insertion portion being perforated, wherein the sensor system comprises a detection portion arranged within the insertion portion of the cannula, wherein the detection portion is configured to detect the substance entered into the lumen of the cannula.

9. Medical apparatus claim 1, wherein an insertion assembly is insertable into the organism, the insertion assembly comprising at least a portion of each of the cannula, the insertion needle and the sensor system, wherein the insertion needle is at least partially arranged within the lumen of the cannula, and the sensor system is partially received in the receptacle of the insertion needle.

10. Medical apparatus according claim 9, wherein in the insertion assembly the insertion needle is located at least partially within the lumen of the cannula such that a tip end portion of the insertion needle protrudes beyond a longitudinal end of the cannula farthest away from the chamber, wherein in particular the insertion assembly is insertable, along a longitudinal direction of the insertion needle, into the organism covered by skin, wherein a skin surface is transverse, in particular including an angle between 20°

and 90°

, in particular perpendicular, to the longitudinal direction of the insertion needle.

12. Medical apparatus according to claim 10, further comprising:

a placement facility having a body and a lever, the lever being removably connectable with the casing, wherein moving the lever enables moving the casing in a direction along the longitudinal axis of the insertion needle relative to a body of the placement facility for inserting the insertion assembly into the organism, wherein an infusion and monitoring assembly is obtained by withdrawing the insertion needle from the insertion assembly, wherein using the infusion and monitoring assembly the medication fluid can be supplied to the organism and the substance can be detected simultaneously.

14. Medical apparatus according to claim 12, wherein the medication fluid guided inside the lumen of the cannula is in contact with a detection portion of the sensor system when the medication fluid is supplied into the organism.

15. Medical apparatus according to claim 1, wherein the cannula has a tubular shape having a cross-sectional inner extent which matches a cross-sectional outer extent of the insertion needle, the insertion needle having one of a C-shape in cross-section or a tubular shape, wherein the casing has a further opening in fluid communication with the chamber.

18. Medical apparatus according to claim 1, wherein the casing has a connector connecting a medication fluid tube for supplying medication fluid to the chamber, wherein the connector is provided at the further opening, wherein the connector is provided at the seal and arranged within the seal, wherein the further opening has fluid communication with the chamber, wherein the connector is provided at the further opening, and wherein the further opening has a cross-sectional size which is larger than a cross-sectional size of the sensor but smaller than a cross-sectional size of the insertion needle.

21. Medical apparatus according to claim 1, further comprising:

an adapter having at least one electrical terminal, wherein the adapter is releasably connectable to the casing and wherein the electrical terminal is electrically contactable to a sensor cable of the sensor system, wherein the adapter comprises a transmitter for transmitting sensor signals received from the sensor system.

23. Medical apparatus according to claim 1, wherein the sensor system comprises a kink at the opening or at a location farther away from the chamber than the opening, wherein the portion of the sensor system runs in particular at least through the seal along the longitudinal axis of the insertion needle.

25. Medical apparatus according to claim 1, wherein the sensor system is at least partially guided within the insertion needle within the cannula through the seal when inserting the insertion assembly into the tissue by moving the insertion needle into the tissue, wherein the insertion needle is hollow forming a needle lumen, wherein the needle lumen serves as the receptacle.

27. Medical apparatus according to claim 25, further comprising:

a pump system connectable to the medication fluid tube in fluid communication with the chamber for supplying the medication fluid into the chamber and from there via the cannula into the organism, wherein the medical apparatus further comprises a controller communicatively and electrically connected to the sensor system and electrically connected to the pump system, wherein the controller is adapted to control the pump system based on a signal received from the sensor system.

29. Medical apparatus according to claim 1, wherein the casing is releasably connectable at a skin of the organism using an adhesive force, wherein the substance comprises glucose and wherein the medication fluid comprises insulin.

8. (canceled)

11. (canceled)

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16. (canceled)

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28. (canceled)

30. (canceled)

31. Method for supplying a medication fluid into an organism and for detecting a substance of the organism, the method comprising:

providing an insertion needle, having a receptacle, in an opening being in fluid communication with a chamber of a casing, the chamber being provided for accommodating the medication fluid, wherein a sensor system is at least partially received in the receptacle;

wherein at least a portion of the insertion needle is removably arranged within a lumen of a cannula, wherein the lumen of the cannula is in fluid communication with the chamber;

annularly sealingly surrounding, by the seal, the insertion needle when the insertion needle is arranged in the opening;

removing the insertion needle from the opening;

annularly sealingly surrounding, by the seal, a portion of the sensor system when the insertion needle is removed from the opening and the portion of the sensor system is arranged in the opening;

detecting the substance of the organism using the sensor system; and

supplying the medication fluid into an organism via the cannula.

32. Method according to claim 31, further comprising:

sealing, using a seal, the chamber from fluid communication via the opening when the insertion needle is arranged in the opening; and

sealing the chamber from fluid communication via the opening when a portion of the sensor system is arranged in the opening.