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Improved medical device with resiliently retracting safety needle

A technology of medical equipment and equipment, applied in the direction of needles, guide needles, instruments introduced into the body, etc.

Active Publication Date: 2020-05-01
SOL MILLENNIUM SWISS R&D CENT SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Although providing protection for healthy operators using the medical device, these known solutions have disadvantages associated with the fact that the reinsertion of the cannula into the body of the device may be initiated in an undesirable and unexpected manner. entry, and this presents a significant problem any time the cannula is introduced into the patient or any other action is taken inadvertently

Method used

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  • Improved medical device with resiliently retracting safety needle
  • Improved medical device with resiliently retracting safety needle
  • Improved medical device with resiliently retracting safety needle

Examples

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Embodiment Construction

[0050] With reference to the figures referred to, the medical device according to the invention is indicated generally with 1 and comprises a tubular body 2 acting together with wings 3 (wings 3 can be detached from body 2 or integral with the body) and a cannula 4 protrudes from the tubular body 2 (at the first end 2A of the tubular body). When the device is not in use, the cannula 4 is covered by a removable protective element 5 . As will be described, the cannula 4 can be retracted into the body 2 after use.

[0051] In a manner known per se, the cannula 4 is attached to a (distal) flat end portion 7 of a cannula holder 8 (which can move in the body 2 when the cannula is retracted), which The tube holder 8 has a second (proximal) end or end portion 9 integral with a common tube 10 . At one free end 11 of such a pipe 10 there is a connector 13 of the Luer Lock type known per se.

[0052] The body 2 may be one-piece or one-piece in the first form and has a second end 2B, a...

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PUM

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Abstract

A medical device (1) for percutaneous or venous access for the purposes of administering a fluid to a patient or sampling from one, comprising a body (2) from which there emerges a cannula (4) supported at one distal end (7) of a cannula holder (8), a proximal end (9) of said cannula holder (8) being connected to a tube (10) in which said fluid can circulate, said cannula holder (8) being capableof moving within said body (2) of the device (1) under the force of a resilient thrust element (26), an immobilising member (32) of one piece with said body (2) and capable of impeding said movement of the cannula holder (8) and being provided with means (24) for activating such movement associated with the body (2) of the device (1) acting together with counter-means (35) of one piece with said cannula holder (8). Said cannula holder (8) has a part or portion of cross-section which is reduced or different (80) from its said distal end (7) and said proximal end (9), said part or portion (80) of reduced or different cross-section allowing said cannula holder (8) to deform within the body (2) of the device (1) when said activating means are activated and such as to separate said cannula holder from said immobilising member (32) and allowing the cannula holder (8) to move in this body (2) of the device (1) and re-enter and disappear within such body (2) of the cannula (4).

Description

technical field [0001] The invention relates to a medical device according to the preamble of claim 1 . Background technique [0002] A number of medical devices are known for percutaneous or intravenous access to administer fluids to or withdraw fluids from patients. Examples of these medical devices are micro-infusion needles, fistula needles and catheter needles. [0003] This type of medical device comprises a rigid part with a free cut end, usually a metal cannula, attached to a first end of a cannula holder. The cannula holder is inserted into the body of the device and has a second end to which a (plastic) tube is attached, through which fluid administered to or withdrawn from the patient flows. The tubes (and the connectors attached to the tubes) allow bodily fluids to be transported to and from suitable fittings, eg test tubes for sampling under vacuum. [0004] The cannula passes through the patient's skin and fluidly connects other parts of the device (usually ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/06
CPCA61M5/322A61M5/3232A61M25/0631A61M2005/3224A61M2005/3228A61M25/0637
Inventor 达里奥·德左尔特马泰奥·拉加纳
Owner SOL MILLENNIUM SWISS R&D CENT SA