CA2544303A1 - Device and method for insertion of a cannula of an infusion device - Google Patents

Device and method for insertion of a cannula of an infusion device Download PDF

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Publication number
CA2544303A1
CA2544303A1 CA002544303A CA2544303A CA2544303A1 CA 2544303 A1 CA2544303 A1 CA 2544303A1 CA 002544303 A CA002544303 A CA 002544303A CA 2544303 A CA2544303 A CA 2544303A CA 2544303 A1 CA2544303 A1 CA 2544303A1
Authority
CA
Canada
Prior art keywords
needle
hub
housing
skin
patient
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002544303A
Other languages
French (fr)
Other versions
CA2544303C (en
Inventor
Mark Henry Faust
James Marrs
Steve Cote
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Smiths Medical ASD Inc
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2544303A1 publication Critical patent/CA2544303A1/en
Application granted granted Critical
Publication of CA2544303C publication Critical patent/CA2544303C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
    • A61B5/14503—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue invasive, e.g. introduced into the body by a catheter or needle or using implanted sensors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
    • A61B5/14532—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue for measuring glucose, e.g. by tissue impedance measurement
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
    • A61M2005/1581—Right-angle needle-type devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
    • A61M2005/1583—Needle extractors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
    • A61M2005/1585—Needle inserters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3287—Accessories for bringing the needle into the body; Automatic needle insertion

Abstract

A device for inserting a cannula of a subcutaneous infusion device into a subcutaneous layer of skin of a patient. For example, some devices automatically retract a needle used to introduce the cannula of a subcutaneous infusion device into the subcutaneous layer of skin of a patient. The device can include a housing with an internal cavity, as well as a needle coupled to the housing. The needle can be coupled to a cannula of a subcutaneous infusion device. A member can move the needle. Upon full introduction of the needle and associated cannula of the subcutaneous infusion device into a subcutaneous layer of skin of a patient, the member is automatically actuated to move the needle into the internal cavity of the housing into the retracted state while leaving the cannula of the subcutaneous infusion device in the subcutaneous layer of skin of the patient.

Claims (25)

1. A device for automatically retracting a needle used to introduce a cannula of a subcutaneous infusion device into a subcutaneous layer of skin of a patient, the device comprising:
a housing defining an internal cavity;
a needle hub coupled to the housing and including a needle, the needle being coupled to a cannula of a subcutaneous infusion device;
a spring configured to move the needle into a retracted state; and a trigger member including projections;
wherein, upon full introduction of the needle and associated cannula of the subcutaneous infusion device into a subcutaneous layer of skin of a patient, the projections release the needle hub, and the spring automatically moves the needle into the internal cavity of the housing into the retracted state while leaving the cannula of the subcutaneous infusion device in the subcutaneous layer of skin of the patient.
2. The device of claim 1, further comprising a second spring configured to introduce the needle and associated cannula of the subcutaneous infusion device into the subcutaneous layer of skin of the patient.
3. The device of claim 1, wherein the housing includes a first portion coupled to the needle, and a second portion that is slideably received in the first portion, wherein the first portion slides relative to the second portion to introduce the needle into the subcutaneous layer of skin of the patient.
4. The device of claim 1, further comprising means for covering the needle prior to introduction of the needle into the subcutaneous layer of skin of the patient.
5. The device of claim 1, further comprising a sleeve coupled to the housing to cover the needle prior to introduction of the needle into the subcutaneous layer of skin of the patient.
6. The device of claim 1, wherein the device is configured to allow the subcutaneous infusion device to be preloaded into the device.
7. The device of claim 1, further comprising a cap that is coupled to the housing of the device.
8. The device of claim 7, wherein the cap includes a tamper-evident seal.
9. A device for inserting a subcutaneous infusion device into skin of a patient, comprising:
a housing;
a hub coupled to the housing and defining an interior passage;
a needle hub including a needle, the needle hub being positioned in the interior passage of the hub so that the needle hub is held in a fixed position relative to the hub and the housing;
a sleeve; and a spring engaging the needle hub;
wherein the housing, hub, and needle hub are movable relative to the sleeve to introduce the needle of the needle hub and associated cannula of an infusion device into a subcutaneous layer of skin, and wherein, upon the needle and associated infusion device being fully inserted into the subcutaneous layer of skin, the needle hub is slideable relative to the hub, and the needle hub including the needle are moveable by the spring through the passage of the hub to a retracted state, leaving the infusion device positioned on the skin of the patient.
10. The device of claim 9, further comprising a cap configured to be coupled to the housing.
11. The device of claim 10, wherein the cap includes a tamper-evident band, wherein the tamper-evident band remains coupled to the housing when the cap is removed from the housing.
12. The device of claim 9, further comprising another spring engaging the needle hub, the spring being positioned to automatically introduce the needle of the needle hub and associated cannula of the infusion device into the subcutaneous layer of the skin of the patient.
13. The device of claim 9, wherein the device is configured to allow the subcutaneous infusion device to be preloaded into the device.
14. A device for inserting a subcutaneous infusion device into skin of a patient, comprising:
a housing including a closed upper end, defining an open lower end, and a threaded portion positioned adjacent the open lower end;
a cylinder hub including first and second ends, the cylinder hub defining an interior passage and two opposing slots extending from a mid-portion of the hub to the first end, and the cylinder hub defining opposing apertures adjacent the second end of the cylinder hub, wherein the first end of the cylinder hub is coupled to the upper end of the housing;
a needle hub including a main body with first and second ends, and a needle coupled to the main body, the main body including opposing wings formed at the first end and opposing barbs at the second end, wherein the needle hub is positioned in the interior passage of the cylinder hub such that the opposing wings extend through the opposing slots of the cylinder hub, and the opposing barbs of the needle hub extend through the opposing apertures of the cylinder hub and engage the cylinder hub so that the needle hub is held in a fixed position relative to the cylinder hub and the housing;
a sleeve including first and second ends and defining an interior passage, the sleeve including opposing projections extending inwardly into the interior passage of the sleeve at a mid-portion of the sleeve, and a cylindrical shoulder formed in the interior passage at the mid-portion of the sleeve, wherein the second end of the cylinder hub extends through the passage of the sleeve, and a portion of the sleeve including the first end is received within the housing;
a spring with first and second ends, wherein the spring surrounds the cylinder hub and extends within the passage of the sleeve, and wherein the first end of the spring is seated on the shoulder of the sleeve, and the second end of the spring engages the opposing wings of the needle hub extending through the opposing slots of the cylinder hub; and a cap including a closed first end, defining an open second end, and a threaded portion positioned adjacent the open second end, wherein the threaded portion of the cap is threaded onto the threaded portion of the housing to seal the device;
wherein, upon removal of the cap from the housing, the second end of the sleeve is positioned relative to skin of a patient, and the housing, cylinder hub, and needle hub are moved relative to the sleeve in a direction towards the skin of the patient so that the needle of the needle hub and associated cannula of an infusion device are introduced into a subcutaneous layer of the skin, and wherein, upon the needle and associated infusion device being fully inserted into the skin and the cylinder hub being moved relative to the sleeve, the opposing projections of sleeve contact and force the barbs of the needle hub inwardly until the barbs disengage from the opposing apertures of the cylinder hub, and wherein upon disengagement of the barbs from the cylinder hub, the needle hub including the needle are moved by the spring through the passage of the cylinder hub to the first end of the cylinder hub adjacent the closed upper end of the housing, leaving the infusion device positioned on the skin of the patient.
15. A device for inserting a subcutaneous infusion device into skin of a patient, comprising:
a housing;
a needle coupled to the housing for receiving a cannula of a subcutaneous infusion device; and a cap coupled to the housing;
wherein the needle is inserted through the cannula of the subcutaneous infusion device and is introduced into the skin of the patient to insert the cannula into the skin; and wherein the cap is coupled to the housing prior to use to create a sterile environment.
16. The device of claim 15, wherein the cap is coupled to the housing after use to protect against exposure to the needle.
17. A method for retracting a needle of a device used to introduce a cannula of a subcutaneous infusion device into a subcutaneous layer of skin of a patient, the method comprising:
removing a cap from the device;
introducing a cannula of a subcutaneous infusion device into a subcutaneous layer of skin of a patient using a needle of a device; and upon the full insertion of the cannula by the device and the device reaching a trigger state, automatically retracting the needle while leaving the infusion device positioned on the skin of the patient.
18. The method of claim 17, further comprising reapplying the cap after introduction of the cannula.
19. The method of claim 17, further comprising preloading the infusion device in the device prior to application of the cap.
20. The method of claim 17, wherein the step of introducing the cannula further comprises providing a member in the device to automatically introduce the cannula of the subcutaneous infusion device into the subcutaneous layer of skin of the patient using the needle.
21. The method of claim 17, further comprising preloading the subcutaneous infusion device into the device.
22. A method for inserting a subcutaneous infusion device into skin of a patient, comprising:
providing a housing and a needle coupled to the housing for receiving a cannula of a subcutaneous infusion device positioning the cannula of the subcutaneous infusion device on the needle;
and coupling a cap to the housing to create a sterile environment.
23. The method of claim 22, further comprising:
uncoupling the cap from the housing; and introducing the needle and associated cannula into the skin of the patient.
24. The method of claim 23, further comprising recoupling the cap to the housing after the cannula has been inserted into the skin of the patient.
25. The method of claim 22, further comprising:
providing a tamper-evident band coupled to the cap by tabs;
coupling the tamper-evident band to the housing; and uncoupling the cap from the housing so that the tabs are broken and the tamper-evident band remains coupled to the housing.
CA2544303A 2003-11-10 2004-09-15 Device and method for insertion of a cannula of an infusion device Active CA2544303C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/705,725 2003-11-10
US10/705,725 US7699807B2 (en) 2003-11-10 2003-11-10 Device and method for insertion of a cannula of an infusion device
PCT/US2004/030344 WO2005046781A1 (en) 2003-11-10 2004-09-15 Device and method for insertion of a cannula of an infusion device

Publications (2)

Publication Number Publication Date
CA2544303A1 true CA2544303A1 (en) 2005-05-26
CA2544303C CA2544303C (en) 2013-06-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA2544303A Active CA2544303C (en) 2003-11-10 2004-09-15 Device and method for insertion of a cannula of an infusion device

Country Status (6)

Country Link
US (1) US7699807B2 (en)
EP (3) EP2380620A3 (en)
JP (1) JP4685024B2 (en)
CN (1) CN100506310C (en)
CA (1) CA2544303C (en)
WO (1) WO2005046781A1 (en)

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US7699807B2 (en) 2010-04-20

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