Ambulatory infusion system including a step switching mechanism for valve control

An infusion system, portable technology, applied in the field of connecting the drug delivery unit and the drive unit, which can solve the problems of complex, large-scale and expensive

Active Publication Date: 2016-07-13
F HOFFMANN LA ROCHE & CO AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While several designs for such dosing units are known in the art, they are rather complex, most of them expensive and / or critical for large scale

Method used

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  • Ambulatory infusion system including a step switching mechanism for valve control
  • Ambulatory infusion system including a step switching mechanism for valve control
  • Ambulatory infusion system including a step switching mechanism for valve control

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Embodiment Construction

[0037] figure 1 The dosing unit 100 and the driving unit 200, and the liquid medicine reservoir 300 are shown. It should be noted that only those structural and functional units that appear to be particularly relevant in the present disclosure are shown. There are usually other units such as electronic control units, power supplies, user interfaces, etc.

[0038] The dosing unit 100 includes a metering pump unit 110, including a dosing cartridge having a hole and a piston (elements not individually numbered) as described in the overview. In the proximal front wall of the drug delivery cartridge, the hole is arranged to be coupled to the fluid port of the pump port 127a. The dosing unit also includes a valve unit that can alternately be in a filling state 120b or a discharge state 120a. During operation, the valve unit repeatedly switches between these states. The reservoir 300 is fluidly coupled to the valve unit via the filling port 127b of the valve unit. The patient 900 is...

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PUM

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Abstract

The present disclosure is directed towards a dosing unit (100) for an ambulatory infusion system, including: a metering pump unit (110), the pump unit including a dosing cylinder (112) and a piston (111), the piston (111) being arranged in sealing sliding engagement inside the dosing cylinder (112); a valve unit (120), the valve unit (120) having a filling port (127b), the filling port being designed for fluidic coupling with a liquid drug reservoir (300), a draining port (127c), the draining port (127c) being designed for fluidic coupling with an infusion site interface (890), and a shut-off body (126), the shut-off body (126) being movable between a filling position where it fluidic couples the filling port (127b) with the dosing cylinder (112) and an alternative draining position where it fluidic couples the dosing cylinder (112) with the draining port (127c); a valve driver coupler (125), the valve driver coupler (125) being coupled to or integral with the shut-off body and being the output element of a step switching mechanism. The disclosure is further directed towards a drive unit that may be used in combination with a disclosed dosing unit, an ambulatory infusion system and a method for coupling a dosing unit and a drive unit.

Description

Technical field [0001] The present disclosure belongs to the field of drug delivery units for portable infusion systems. The present disclosure also belongs to the field of driving units for use in combination with drug delivery units and the field of portable infusion systems for infusing liquid medicine into the patient's body over an extended period of time. In addition, the present disclosure belongs to the field of methods for coupling a drug delivery unit and a driving unit. Background technique [0002] Portable infusion devices are well known in the art, for example in the treatment of diabetes by continuous subcutaneous insulin infusion (CSII) and in the treatment of pain or cancer, and are available from many suppliers, such as Roche Diagnostics in Germany (RocheDiagnosticsGmbH, Germany) or Medtronic MiniMedInc., CA, USA. [0003] Based on classic and widely accepted designs, these portable infusion devices or systems are usually of the syringe-driver type. Many disadv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/14A61M5/142A61M5/168
CPCA61M5/1413A61M5/14216A61M5/16809A61M5/142A61M5/168A61M2005/14573A61M39/22A61M2039/226
Inventor H.里斯特
Owner F HOFFMANN LA ROCHE & CO AG
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