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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 caused by the slow insertion or exit speed of the blood collection needle during the use of the blood collection pen material.

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
Comparison scheme
Effect test

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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Abstract

The invention relates to a rapid-retraction mechanism for a lancing device. The rapid-retraction mechanism comprises an auxiliary motivating component, a needle base fixing component, a needle base, amotivating component, a motivating spring and a resetting spring. The resetting spring is arranged in the auxiliary motivating component; the needle base fixing component penetrates into the auxiliary motivating component; a motivating platform is arranged on the auxiliary motivating component; the needle base fixing component comprises a needle base connecting section, a return stroke leading section and a return stroke guiding section; the needle base is installed on the needle base connecting section; a return stroke leading arm is arranged on the return stroke leading section, and the return stroke guiding section is inserted into the motivating component; the motivating component comprises a motivating component body and a motivating rod; the return stroke guiding section is insertedinto a return stroke leading hole in the motivating component body; a motivating elastic arm and a motivating component supporting table are arranged on the motivating component body; the motivatingrod is sleeved with the motivating spring. The rapid-retraction mechanism has the advantages that retaining time of a blood-taking needle in skin is shortened, and pains are relieved for a patient; the rapid-retraction mechanism further has the advantages of being simple in structure, reasonable in design, convenient to assemble and others.

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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