Insertion device

• US 10,413,183 B2
• Filed: 11/21/2016
• Issued: 09/17/2019
• Est. Priority Date: 04/08/2016
• Status: Active Grant

• Current Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Inventors: Antonio, David C., Larson, Eric Allan, Ruelas, Jose J.
• Primary Examiner(s): Agahi, Puya
• Application Number:
  US15/357,952
• Publication Number:
  US 20170290533A1
• Time in Patent Office: 1,030 Days
• CPC Class Codes: A61B 2560/0214 of power generation or supply
• CPC Class Codes: A61B 2560/045 with a separable interface unit, e.g. for communication
• CPC Class Codes: A61B 2560/063 Devices specially adapted for delivering implantable medical measuring apparatus
• CPC Class Codes: A61B 2562/04 Arrangements of multiple sensors of the same type
• CPC Class Codes: A61B 2562/16 Details of sensor housings or probes; Details of structural supports for sensors A61B2560/0462 takes precedence
• CPC Class Codes: A61B 2562/227 Sensors with electrical connectors
• CPC Class Codes: A61B 5/0002 Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network A61B5/07 takes precedence; transmission systems for measured values G08C; transmission H04B; transmission of digital information H04L; wireless communication networks H04W
• CPC Class Codes: A61B 5/0022 Monitoring a patient using a global network, e.g. telephone networks, internet
• CPC Class Codes: A61B 5/145 Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissuemeasuring of blood pressure or blood flow A61B5/02; non-radiation detecting or locating of foreign bodies in blood A61B5/06
• 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: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/1473 invasive, e.g. introduced into the body by a catheter A61B5/1482 takes precedence
• CPC Class Codes: A61B 5/1486 using enzyme electrodes, e.g. with immobilised oxidase
• CPC Class Codes: A61B 5/14865 invasive, e.g. introduced into the body by a catheter or needle or using implanted sensors
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150236 Pistons, i.e. cylindrical bodies that sit inside the syringe barrel, typically with an air tight seal, and slide in the barrel to create a vacuum or to expel blood
• CPC Class Codes: A61B 5/150633 Protective sleeves which are axially extensible, e.g. sleeves connected to, or integrated in, the piercing or driving device; pivotable protective sleeves
• CPC Class Codes: A61B 5/150732 Needle holders, for instance for holding the needle by the hub, used for example with double-ended needle and pre-evacuated tube,
• CPC Class Codes: A61B 5/150969 Low-profile devices which resemble patches or plasters, e.g. also allowing collection of blood samples for testing
• CPC Class Codes: A61B 5/6832 using adhesives A61B5/259 takes precedence
• CPC Class Codes: A61B 5/6833 : Adhesive patches
• CPC Class Codes: A61M 2005/1585 : Needle inserters
• CPC Class Codes: A61M 2005/1586 : Holding accessories for holding infusion needles on the body holding devices for catheters A61M25/02
• CPC Class Codes: A61M 2005/1726 : the body parameters being measured at, or proximate to, the infusion site
• CPC Class Codes: A61M 2205/3569 : sublocal, e.g. between console and disposable
• 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

Embodiments relate to an insertion device that includes: a plunger coupled with a lock collar. The insertion device houses contents including: a striker including self-locking striker snap arm(s) where the striker is kept from firing by a striker spring captured between the plunger and the striker when the insertion device is in a cocked position; a sensor assembly; and a needle carrier that holds a piercing member, the needle carrier captured between the striker and a needle carrier spring where a self-releasing snap(s) keeps the needle carrier cocked, where the plunger prevents the self-releasing snap(s) from repositioning and releasing the needle carrier. The striker fires the needle carrier such that the self-locking striker snap arm(s) are positioned to allow the striker to snap down. The needle carrier is then retracted when the user releases the plunger and the piercing member is encapsulated within the insertion device.

Claims

1. An insertion device comprising:

a plunger coupled with a lock collar, wherein the insertion device houses contents comprising at least one component including;

a striker comprising at least one self-locking striker snap arm configured to keep the insertion device in a cocked position while not in use such that the striker is kept from firing by a striker spring captured between the plunger and the striker when the insertion device is in the cocked position;

a sensor assembly comprising a sensor disposed on a bottom surface of the sensor assembly, wherein a mounting base having a first side attaches to the bottom surface of the sensor assembly, and a second side of the mounting base is exposed; and

a needle carrier adapted to hold a piercing member, the needle carrier captured between the striker and a needle carrier spring wherein at least one self-releasing snap keeps the needle carrier cocked, wherein the plunger prevents the self-releasing snap(s) from repositioning and releasing the needle carrier;

wherein when the insertion device is fired in response to a user depressing at least a portion of the plunger, the striker fires the needle carrier holding the piercing member such that the self-locking striker snap arm(s) are positioned to enter a groove to allow the striker to snap down,

wherein after the insertion device is fired, the needle carrier is retracted in response to the user releasing the plunger such that the piercing member is encapsulated within the housing of the insertion device.

2. The insertion device of claim 1, wherein the insertion device is single use and disposable.

3. The insertion device of claim 1, further comprising a lid that completely covers a bottom surface of the lock collar to protect the contents within the insertion device.

4. The insertion device of claim 1, wherein the insertion device is unlocked by the user using two unlocking directional forces including performing a rotation motion while applying a downward force on the plunger to prevent the lock collar from accidentally unlocking.

5. The insertion device of claim 1, wherein the sensor assembly is fastened to a user'"'"'s skin via the mounting base and the sensor is introduced into a body of the user upon firing of the needle carrier and the piercing member of the insertion device.

6. The insertion device of claim 1 wherein the sensor is introduced into a body of the user upon the user pushing on the plunger using a minimum pushing force for a certain minimum travel or distance.

7. The insertion device of claim 1, wherein the sensor assembly is automatically left behind on an insertion site upon the user pulling away the insertion device away from the insertion site after the insertion device is fired.

8. The insertion device of claim 1, wherein after the insertion device is used to insert the sensor extension into a body of a user, a transmitter assembly is connected to the sensor assembly at one or more areas as a single unit in response to a rotating motion by the user.