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Method and kit for synchronously cultivating bacterium group

A simultaneous culture and kit technology, applied in the field of medicine, can solve the problems of large sampling volume, ignoring the variation of clinical pathogenic bacteria, and long period of bacterial culture report

Active Publication Date: 2010-10-13
上海康元科技发展股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 1. Large sampling volume: Taking blood samples as an example, 5-10 ml of blood is required for each culture. If four types of bacterial culture are performed at the same time, 20-40 ml of blood is required. Many patients are unwilling to accept it, especially newborns. Bacterial culture for infectious diseases;
[0008] 2. The bacterial culture report takes a long time, and the results can only be produced within 7 days; the drug sensitivity report takes 72 hours;
[0009] 3. The positive detection rate is low, and the positive detection rate of aerobic fungi culture is less than 13%;
[0010] 4. Neglecting that the mixed infection of clinical pathogenic bacteria is an important objective phenomenon of clinical pathogenic bacteria, and ignoring the actual state of continuous mutation of clinical pathogenic bacteria
[0011] 5. First cultivate aerobic bacteria, if there is no growth, then cultivate anaerobic bacteria, if there is no growth, then cultivate other bacteria, delaying the treatment time

Method used

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  • Method and kit for synchronously cultivating bacterium group
  • Method and kit for synchronously cultivating bacterium group
  • Method and kit for synchronously cultivating bacterium group

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Embodiment 1: Preparation of the kit of the present invention (abbreviated as A1NBC kit)

[0072] ①.A (aerobic fungus aerobe group, A) culture and proliferation fluid-1000 ml of fresh beef broth, add 10-15 grams of peptone, 3.5-5 grams of sodium chloride, heat to dissolve, adjust the pH to 7.2-7.8, filter until clarified, separate Put it into a clean, fixable, and sealed reagent bottle, sterilize it under pressure at 118-121°C for 20-30 minutes, and monitor it for later use.

[0073] ②.An (anaerobic fungus anaerobe group, An) culture and proliferation fluid-fresh beef broth 1000ml plus peptone 10-17g, yeast extract 1.5-3g, glucose 5-7g, soluble starch 1-2g, 3.5-5 grams of sodium chloride, 2-3 grams of sodium acetate, and 0.5-1 grams of cysteine ​​hydrochloride are heated and dissolved, and the pH is adjusted to 7.2-7.6, and packed into clean, fixed and sealed reagent bottles, 100-112 Sterilize at ℃ for 20-30 minutes, monitor and set aside.

[0074] ③.B (bacteria L-for...

Embodiment 2

[0077] Embodiment 2: Carry out bacterial culture and drug susceptibility test of clinical sample with the method of the present invention

[0078] 1. Inject the blood sample into the A. / An. / B. / C. bottles prepared in Example 1 respectively with 2 drops in aseptic procedures, and mix immediately; cover the puncture holes of each bottle with sterile cotton balls, Fix it, put it in a 35°C incubator and incubate for 6-8 hours, and observe the result.

[0079] 2. If there is turbidity, take the turbid A / or An / or B / or C3 drop bacteria solution with aseptic procedures, and immediately transfer them to the corresponding A / An / B / C. Drug susceptibility test medium, press Antibacterial drugs should be pasted in different categories. For example, in category A, amikacin, gentamicin, penicillin, ampicillin, tobramycin, cefazolin, cefoperazone, ceftriaxone, erythromycin, and chlorine should be selected. Antimicrobial drugs such as Amycin, vancomycin, co-trimoxazole, ciprofloxacin, imine disp...

Embodiment 3

[0106] Embodiment 3: The method of the present invention carries out the bacterial culture and the drug susceptibility test of the clinical sample of unnamed fever case

[0107] Unnamed fever case: Male, 1 year and 7 months, with a fever of 38-40°C, which was not relieved by systemic treatment, transferred to a children's hospital, and underwent blood routine bacterial culture, and Pseudomonas aeruginosa was cultured, which was tested for drug sensitivity , Sensitive to Pioneer No. 5, 31 days of clinical intravenous infusion, no relief, body temperature still fluctuating between 38-39 ℃.

[0108] Use the method and kit of the present invention to carry out blood culture, collect 0.5 ml of jugular vein blood, inject 2 drops of each A.An.B.C. into aseptic procedures and mix immediately, place in a 35°C incubator for 6-8 hours, and observe A.An.B.C. .An.B. The three bottles were all turbid. The results showed that the patient with unknown fever should be mixed with multiple bacte...

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Abstract

The invention relates to the field of medicaments, in particular to a method for synchronously cultivating a bacterium group and a kit for synchronously cultivating the bacterium group. The kit of the invention comprises aerobe group cultivation proliferation solution, anaerobe group cultivation proliferation solution, bacteria L-form group cultivation proliferation solution and cell bacterium group cultivation proliferation solution. The method and the kit of the invention have the advantages of necessary sample amount for cultivating bacteria of only 1 to 2 percent of an ordinary using amount, positive detection rate of over 95 percent, capacity of judging a result within 6 to 8 hours of bacterium cultivation, obtainment of pathogenic bacterium group medicament sensitive data within 24 hours, accordance with the basic rule of evidence-based diagnosis of evidence-based medicament and wide clinical application prospect.

Description

technical field [0001] The invention relates to the technical field of medicine, in particular to a method for synchronous culture of bacterial groups, explanation of direct drug susceptibility test results, definition of technical standards and a kit. Background technique [0002] Clinical bacterial culture is a commonly used clinical bacterial pathogenic (cause) inspection method in hospitals, that is, to provide the nutrients and environment necessary for bacterial growth by artificial means, so that the clinical pathogenic bacteria in the human body can reproduce in a special medium , and then according to the biological characteristics of the colony's shape, growth characteristics, special needs for nutrition and changes in indicators to judge the bacterial category, identify the bacterial species, and guide clinical medication, which has high application value. [0003] In recent years, due to the widespread use of antibiotics, drug-resistant strains have gradually eme...

Claims

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Application Information

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IPC IPC(8): C12Q1/08C12Q1/18
Inventor 袁鸿慈
Owner 上海康元科技发展股份有限公司
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