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hypodermic needle insertion mechanism

A skin and needle support technology, used in hypodermic injection devices, needles, trocars, etc., to solve problems such as limiting injection depth

Active Publication Date: 2017-01-11
PHARMASENS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However attractive the concept of needle insertion into the skin is, it has disadvantages if applied to the insertion of non-centrally located needles or to the use of multiple needles at different sites
In addition, the mechanism of using a stretched bottom of the device in the form of a cone with a central opening severely limits the depth of injection relative to the diameter of the device

Method used

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Examples

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Embodiment Construction

[0052] Fig. 1 shows a skin insertion mechanism for vertically inserting some non-centrally positioned needles according to an embodiment of the present invention. Figure 1A Showing the skin insertion mechanism in the standby position, Figure 1B Shows a sliding bolt mechanism as a release element, Figure 1C The skin insertion mechanism in operation mode after inserting the needle into the skin is shown.

[0053] Figure 1A It is a cross-sectional view showing the needle 1 fixedly positioned and held vertically by the needle support 2. The skin attachment plate 3 is coated with an adhesive layer 4, and has a hole 5 opposite to the tip of the needle. The human skin 6 is attached to the skin attachment plate 3 through the adhesive layer 4. In this embodiment, the retracting mechanism is constituted by a spring-type mechanism that includes a retractable guide rail with an inner tube 7 fixed to the skin attachment plate, and a trip dog at the other end. 8. The inner tube 7 can sli...

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PUM

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Abstract

A subcutaneous access device comprising a skin attachment plate (3) coated with an adhesive layer (4). The skin-attachment plate (3) is movably coupled to a needle support with fixed-position needles via retraction mechanisms (7, 8, 9). In the standby position, the skin attachment plate is spaced apart from the needle support (2) and covers the needles in fixed position. Subcutaneous insertion of the needle is achieved by attaching the skin attachment plate (3) with an adhesive layer to the skin and releasing the retraction mechanism, thereby triggering the pulling of the attached skin against the tip of the needle at high speed.

Description

Technical field [0001] The invention relates to a device for subcutaneous access. Background technique [0002] The application field of this type of hypodermic needle insertion mechanism is to inject physiologically acting fluid into an individual, such as a patient, to extract intercellular fluid for diagnostic purposes and / or to transmit a measurable signal to the individual by means of a hypodermic probe. For such applications, it is usually necessary to manually insert a needle into the skin, or apply a hypodermic needle insertion mechanism to inject a needle movably connected to a functional element or device into the skin, or after the needle has been embedded in the skin Need to connect manually. [0003] Pluggable devices with this function attached to the skin are specifically introduced in diabetes care such as insulin infusion and continuous glucose monitoring. The needle is usually inserted into the skin manually or through a separate skin insertion device. In recen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M5/158A61M5/142A61B5/145
CPCA61M5/14248A61M5/158A61B5/14503A61B5/1495A61B17/3403A61B2017/00951A61M5/1452A61M2005/1585
Inventor P·哈德瓦芮H·奇尔基
Owner PHARMASENS