Unlock instant, AI-driven research and patent intelligence for your innovation.

Disposable safety blood collection needle, assembly method and use method

A disposable, blood collection needle technology, applied in the field of medical devices, can solve the problems that the needle tip cannot be actively returned to the cavity, the potential energy is limited, and the cost is high, and the assembly method and the use method are simple, the design concept is ingenious, and the production cost is low.

Active Publication Date: 2021-03-23
PROMISEMED HANGZHOU MEDITECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are various structures of lancets on the market, but most of them are complex and costly
Some ejection-type disposable blood collection needles release the elastic potential energy compressed and stored by the compression spring to pierce the needle tip into the skin. , the penetration rate of the skin is small, the patient will feel pain, and the comfort is poor; in addition, after the compression potential energy of the compressed spring is released, it cannot be automatically recompressed, and the needle tip cannot actively retreat into the cavity. In order to solve this problem, usually It is to add a protective cap or manually push the needle tip into the housing to prevent the needle tip that has collected the blood sample from being exposed

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Disposable safety blood collection needle, assembly method and use method
  • Disposable safety blood collection needle, assembly method and use method
  • Disposable safety blood collection needle, assembly method and use method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] like figure 1 , Figure 6-9 As shown, a disposable safety blood collection needle in this embodiment includes a housing, a needle core 10, a needle cover 40 and a spring 50, wherein the housing includes an upper housing 20 and a lower housing 30 that are plugged and fitted with each other. An ejection accommodation chamber is formed between the housing 20 and the lower housing 30 , and an outlet is provided at the front end of the ejection accommodation chamber.

[0037] like figure 2 As shown, the upper casing 20 of this embodiment is provided with an initial stopper 21 and a pressing trigger part 25 at the bottom of the case at the initial fixed position, and the upper case 20 is provided with an ejection stopper 23 at the bottom of the case at the acupuncture limit position. , the upper housing 20 is provided with an oblique limiting portion 22 on both side walls of the holding position after stabbing, and the angle between the oblique limiting portion 22 and the ...

Embodiment 2

[0053] The difference between the second embodiment and the first embodiment lies in the way the spring 50 is fixed. Specific as Figure 10 As shown, a spring card 28 is set in the upper housing 20, and the spring card 28 is provided with a slot 29 for accommodating the passage of the needle bar. The lower housing 30 is provided with a corresponding spring card and the slot, and the upper and lower housings After buckling, the two draw-in slots form a passing cavity, the diameter of which is smaller than the major diameter of the spring 50. When installed, the front end of the spring 50 is located between the spring card and the outlet, thereby fixing one end of the spring. like Figure 11 As shown, the needle bar 11 is provided with a fixed ring groove 18 near the needle seat, and the end of the spring 50 away from the outlet is located in the fixed ring groove, and the major diameter of the spring end is smaller than the fixed ring groove 18 near the needle bar. The outsid...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the technical field of medical equipment, and specifically discloses a disposable safe blood taking needle, and an assembling method and a use method of the disposable safe blood taking needle. When a needle core of the disposable safe blood taking needle is on an initial fixing position, a spring is in a stretched state and is used to store elastic potential energy. After a trigger portion is pressed to trigger the needle core, the needle core moves to an acupuncture limited position, so depth of a needle tip pierced skin is controllable, preventing the needle tip from piercing too deep. After blood is taken, the needle tip automatically enters a housing, preventing the needle tip from exposing and hurting people. The spring in the above structure provides potential energy used for ejection by stretching stored energy, and the spring is compressed to store energy under the action of the ejection potential energy, so as to provide retraction potential energy for the needle tip to automatically retract. Since the spring is sleeved on the needle core, the spring also has a guiding function in ejection and retraction. The spring has multiple functions. The needle is clever in design concept. The disposable safe blood taking needle is simple in structure and low in production cost, and the assembling method and the use method are relatively simple.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a disposable safety blood collection needle, an assembly method and a use method of the disposable safety blood collection needle. Background technique [0002] Disposable blood collection needle is a kind of commonly used medical device, utilizes blood collection needle point to puncture patient's skin to collect blood sample. There are various structures of lancets currently on the market, but most of them have complicated structures and high costs. Some ejection-type disposable blood collection needles release the elastic potential energy compressed and stored by the compression spring to pierce the needle tip into the skin. , the penetration rate of the skin is small, the patient will feel pain, and the comfort is poor; in addition, after the compression potential energy of the compressed spring is released, it cannot be automatically recompressed, and the needle tip...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/151A61B5/15
CPCA61B5/150022A61B5/150175A61B5/150274A61B5/150534A61B5/15113A61B5/15117
Inventor 胡超宇
Owner PROMISEMED HANGZHOU MEDITECH