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High-precision pen-type injector

A pen-type injector, high-precision technology, applied in the direction of syringes, ampoule syringes, hypodermic injection devices, etc., can solve problems such as difficult control

Pending Publication Date: 2018-04-06
CHANGZHOU DELFU TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For high-precision injections of drugs, such as insulin injections, each patient needs to inject different doses, and glass vials are packed in equal amounts, and ordinary syringes can no longer meet their requirements.
The precision of traditional direct-push injection pens is difficult to control, and a large thrust is required to push the piston rod

Method used

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  • High-precision pen-type injector

Examples

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Embodiment Construction

[0018] The present invention is described in further detail below in conjunction with the embodiment that accompanying drawing provides.

[0019] see Figure 1-6 As shown, a high-precision pen injector includes an injection button 1, a dose adjustment knob 2, a clutch ratchet 3, a clutch spring 4, a spiral sleeve 5, a screw rod 6, a spiral ratchet 7, a fixed ratchet assembly 8, and a main body Shell 9, reset knob 10, return spring 11, drug silo 12 and dose display sleeve 13, said dose display sleeve 13 is fixed in the hole of main body upper shell 9, and the inner hole of dose display sleeve 13 has a second A helical groove 131 , the dose adjustment knob 2 is provided with a second helical groove 21 , and the first helical groove 131 cooperates with the second helical groove 21 . When the dose adjustment knob 2 is rotated, the dose adjustment knob 2 can be rotated up through two helical grooves, and the inner wall of the first inner hole 211 of the dose adjustment knob 2 has ...

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Abstract

The invention relates to a high-precision pen-type injector which comprises an injection button, a dose adjusting knob, an engaging and disengaging ratchet, an engaging and disengaging spring, a spiral sleeve, a screw, a spiral ratchet, a fixed ratchet wheel assembly, a main body upper housing, a reset rotary knob, a reset spring, a cartridge case bin and a dose display sleeve. The screw is in threaded connection with a threaded hole of the spiral ratchet, a matched plane is arranged on the screw, the reset rotary knob is provided with a flat reset rotary knob hole matched with the screw, thereset rotary knob is installed on the screw through the reset rotary knob hole, a second one-way ratchet is arranged on the end face of the reset rotary knob, a first one-way ratchet matched with thesecond one-way ratchet is arranged on the fixed ratchet wheel assembly, one end of the reset spring abuts against the reset rotary knob, the other end of the reset spring abuts against the fixed ratchet wheel assembly, and the cartridge case bin is fixedly connected with the end of the main body upper housing. The high-precision pen-type injector saves effort in injection and is high in injectionprecision.

Description

technical field [0001] The invention relates to a medical injector, in particular to a pen-type high-precision injector. Background technique [0002] Syringes are widely used in the medical field and are used to inject bottled medicinal liquids. For high-precision injections of drugs, such as insulin injections, each patient needs to inject different doses, and glass medicine bottles are packed in equal quantities, and ordinary syringes can no longer meet their requirements. The precision of traditional direct-push injection pens is difficult to control, and a large thrust is required to push the piston rod. Contents of the invention [0003] The object of the present invention is to provide a pen type injector with labor-saving injection and high injection accuracy. [0004] In order to achieve the above purpose, the technical solution of the present invention is: a high-precision pen injector, including an injection button, a dose adjustment knob, a clutch ratchet, a ...

Claims

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Application Information

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IPC IPC(8): A61M5/24A61M5/315
CPCA61M5/24A61M5/31511A61M5/31541A61M5/31565A61M5/31586A61M2005/2403
Inventor 许云初王少峰吴军美
Owner CHANGZHOU DELFU TECH
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