Rapid-retraction mechanism for lancing device

The technology of retracting mechanism and lancing pen, which is applied in the field of medical devices, can solve the problems of the lancet needle insertion speed or the slow needle withdrawal speed, etc., and achieves the effects of simple structure, improved needle return speed, and reduced pain sensation.

Pending Publication Date: 2018-04-24
TIANJIN HUAHONG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the blood collection pens on the market will bring pain to patients when they are used. This pain is cau...

Method used

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  • Rapid-retraction mechanism for lancing device
  • Rapid-retraction mechanism for lancing device
  • Rapid-retraction mechanism for lancing device

Examples

Experimental program
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Embodiment Construction

[0023] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0024] see Figure 1 to Figure 3 , a rapid retraction mechanism for a blood collection pen, comprising an auxiliary excitation member 1 fixed in the housing of the blood collection pen, a needle holder fixing member 2, a needle holder 3 with a blood collection needle, an excitation member 4, an excitation spring 5 and a return spring 6, The auxiliary excitation member 1 includes an auxiliary excitation part body 1-1, and an axial through hole is arranged in the auxiliary excitation part body, one end of the axial through hole is the needle seat assembly end 1-2, and the other end is a needle seat fixing end. Component assembly end 1-3, the first return spring limit shoulder 1-4 is provided in the auxiliary excitation member, and the return sp...

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PUM

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Abstract

The invention relates to a rapid retraction mechanism of a blood collection pen, which includes an auxiliary excitation member, a needle holder fixing member, a needle holder, an excitation member, an excitation spring and a return spring, and a return spring is arranged in the auxiliary excitation member; the needle holder firmware member is worn on the Inside the auxiliary excitation component; an excitation platform is provided on the auxiliary excitation part; the needle holder fixing member includes a needle holder connection section, a return guide section and a return guide section; a needle holder is installed on the needle holder connection section; a return guide arm is provided on the return guide section , the return guide section is inserted in the excitation member; the excitation element includes the excitation element body and the excitation rod; the return guide section is inserted in the return guide hole of the excitation element body; the excitation elastic arm and the excitation element supporting platform are arranged on the excitation element body ; Set the excitation spring on the excitation rod. Advantages: the time for the lancet to stay in the skin is reduced, and the patient's pain is reduced; the invention also has the advantages of simple structure, reasonable design, and convenient assembly.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to a quick retraction mechanism of a blood collection pen. Background technique [0002] The blood collection pen is a manual ejection auxiliary blood collection device used in conjunction with a disposable sterile blood collection needle to collect peripheral blood samples from the human body. It uses the blood collection needle to puncture the patient's finger or ear for blood collection. At present, the blood collection pens on the market will bring pain to patients when they are used. This pain is caused by the slow insertion or withdrawal speed of the blood collection needle during the use of the blood collection pen material. When the needle insertion speed is significantly lower than the transmission speed of the human body's pain sensation to the brain, the peripheral nerves of the human body will successfully complete the whole process of a reflex arc transmitted to...

Claims

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Application Information

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IPC IPC(8): A61B5/151
CPCA61B5/150022A61B5/151
Inventor 张立波
Owner TIANJIN HUAHONG TECH
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