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Injection device

An injection device and syringe technology, applied in the field of medical equipment, can solve problems such as shortage, excessive injection volume of liquid medicine, and affecting the health of patients, and achieve the effect of precise control of injection volume and rapid liquid absorption

Pending Publication Date: 2020-08-14
CANYON MEDICAL INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor control of the push-pull speed of the plunger rod, the injection volume of the medicinal solution cannot be accurately controlled, and the injection volume of the medicinal solution often occurs too much or insufficient, which affects the health of the patient.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0052] Please refer to figure 1 , the embodiment of the present invention provides an injection device 10 for injecting medicinal liquid to a patient. It can realize rapid liquid absorption when extracting the liquid medicine, and can also accurately control the injection volume when injecting the liquid medicine, which is convenient and practical.

[0053] The injection device 10 includes a syringe 100 and an injection needle 200 . The syringe 100 is detachably connected to the injection needle 200 so as to facilitate installation and replacement of the injection needle 200 . The syringe 100 is used to store the medicinal solution, and the injection needle 200 is used to pierce the patient's skin. The syringe 100 can inject the medicinal solution stored therein into the patient's body through the injection needle 200 to realize the function of medicinal solution injection.

[0054] Please refer to figure 2 and image 3 , the syringe 100 includes an outer sleeve 110 , a p...

no. 2 example

[0076] Please refer to Figure 9 , Figure 10 and Figure 11 , the embodiment of the present invention provides an injection device 10. Compared with the first embodiment, the difference of this embodiment is that the structure of the elastic mechanism 130 is different.

[0077] In this embodiment, the elastic mechanism 130 no longer includes the screw 132 and the elastic member 133 , but includes a support frame 141 , a compression spring 142 , a first connecting member 143 and a second connecting member 144 . The support frame 141 is fixedly connected to one end of the outer sleeve 110 , that is, the support frame 141 is fixedly connected to the port 112 . The first connecting piece 143 and the second connecting piece 144 are detachably connected, and both are arranged in the supporting frame 141. The supporting frame 141 can limit the first connecting piece 143 and the second connecting piece 144, so as to prevent the first connecting piece from 143 and the second connec...

no. 3 example

[0086] Please refer to Figure 12 The embodiment of the present invention provides an injection device 10. Compared with the first embodiment, the difference of this embodiment is that the structure of the injection needle 200 is different.

[0087] In this embodiment, the injection needle 200 no longer includes the inner core 240 , the fixing seat 250 , the spring 260 and the sealing ring 270 , but only includes the Luer connector 210 , the needle 220 and the outer needle tube 230 . The outer needle tube 230 is detachably connected to the outer sleeve 110 through the Luer connector 210 for easy installation and replacement. The needle 220 is fixedly connected to the end of the outer needle tube 230 away from the Luer connector 210, the needle 220 is provided with an opening 221, and the opening 221 communicates with the outer needle tube 230. The needle tube 230 and the opening 221 on the needle 220 output into the patient's body.

[0088] It should be noted that there are ...

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Abstract

The invention discloses an injection device, and relates to the technical field of medical instruments. The injection device includes an injector; a pressing and loosening mechanism is installed on anouter sleeve; a plunger rod passes through the pressing and loosening mechanism, and extends into the outer sleeve; the plunger rod can move relative to the outer sleeve so as to inward draw or outward inject a liquid medicine; the pressing and loosening mechanism is provided internal threads; a circumferential surface of the plunger rod is provided with external threads; the pressing and loosening mechanism can be pressed outside the plunger rod so as to make the internal threads engaged with the external threads; and the pressing and loosening mechanism can also loosen the plunger rod so asto make the internal threads separated from the external threads. Compared with the prior art, due to the fact that the pressing and loosening mechanism installed on the outer sleeve and the plungerrod in screw-thread fit with the pressing and loosening mechanism are employed, the injection device provided by the invention can rapidly draw the liquid medicine when drawing the liquid medicine, and can accurately control the injection dose when the liquid medicine is injected, and is convenient and practical.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an injection device. Background technique [0002] At present, when a patient is injected with a medicinal solution clinically, the injection volume of the medicinal solution is controlled by manually pushing the plunger rod by a medical staff. However, due to poor control of the push-pull speed of the plunger rod, the injection volume of the medicinal solution cannot be accurately controlled, and the injection volume of the medicinal solution often occurs too much or insufficient, which affects the health of the patient. [0003] In view of this, it is particularly important to design and manufacture an injection device that can accurately control the injection volume, especially in the production of medical devices. Contents of the invention [0004] The purpose of the present invention is to provide an injection device, which can quickly absorb liquid when extractin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/178A61M5/31A61M5/315A61M5/46A61M5/32A61J1/22
CPCA61J1/2003A61J1/201A61J1/2051A61J1/22A61M5/178A61M5/31A61M5/3129A61M5/31501A61M5/31513A61M5/3286A61M5/46A61M2005/3126A61M2005/31508A61M2005/3152
Inventor 饶建华王永刚江荣华隆龙
Owner CANYON MEDICAL INC
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