Medical wristband with invisible information and preparation method thereof

Abstract

The present invention relates to a medical wristband with invisible information and a method for manufacturing the same. The conventional developed dyes or inks in the prior art can store information which, however, is visible. In the present invention, polystyrene (PS) microspheres are prepared by micro-emulsification: PS particles are dissolved in a toluene solution and a fluorescent dye is added to obtain a fluorescent solution; an SDS solution is added in and mixed with the fluorescent solution to obtain a system to be ultrasonically emulsified; and the system is ultrasonically emulsified and the toluene is completely volatilized. The ink can be used directly as an invisible ink. The information is written, as two-dimensional codes and by the ink, on a piece of non-fluorescent paper, and plastic-packaged onto a wristband of a patient. Information about a patient can be successfully scanned in the ease of UV on.

Claims

1. A preparation method for an invisible ink, comprising steps of: S1: preparing PS microspheres by micro-emulsification: dissolving PS particles in a toluene solution to obtain a PS-toluene solution having a content of the PS of 1% by mass fraction, and adding a single fluorescent dye anthracene to obtain a PS-toluene@anthracene fluorescent solution having a content of the dye of 0.1% by mass fraction; S2: adding an aqueous solution of SDS in the solution obtained in S1 and mixing, to obtain a system to be ultrasonically emulsified; and S3: ultrasonically emulsifying the solution obtained in S2 and completely volatilizing the toluene.

2. The preparation method according to claim 1, wherein the PS particles have a size of 100±20 nm.

3. The preparation method according to claim 1, wherein, in S2, 2 mL of the solution obtained in S1 and 14 mL of the aqueous solution of SDS having a concentration of 5 mg/mL are provided and pre-stirred, after adding magnetons therein, on a magnetically-driven rotating mechanism for 1 h at 300 r/min, to obtain the system to be ultrasonically emulsified.

4. The preparation method according to claim 1, wherein, in S3, the solution obtained in S2 is ultrasonically emulsified on an ultrasonic cell crusher at power 10%, with five cycles within 1 min (2 s/2 s), and then stirred on the magnetically-driven rotating mechanism for 24-48 h at 300 r/min, until the toluene is completely volatilized.

5. The preparation method according to claim 1, wherein, in S1, both fluorescent dyes, i.e., coumarin6 and anthracene, are added to obtain a PS-toluene@coumarin6@anthracene fluorescent solution having a content of the dyes of 0.1% by mass fraction.

6. The preparation method according to claim 5, wherein, a ratio of coumarin6 to anthracene by mass is 45%:55%, 40%:60%, 35%:65%, 30%:70%, 25%:75%, 20%:80%, 15%:85%, 10%:90%, 5%:95%, 1%:99%.

7. An invisible ink usable in medical instruments, wherein the invisible ink is obtained by the preparation method according to claim 1.

8. A medical wristband with invisible information, wherein the information is written on a piece of non-fluorescent paper by the invisible ink according to claim 7, the written paper is colorless under natural light, and the ink can be used directly as an invisible ink.

9. The medical wristband with invisible information according to claim 8, wherein the information is written by the invisible ink as two-dimensional codes; the information is invisible in the case of UV off and the information is visible in the case of UV on; and information about a patient can be identified by scanning by an intelligent device.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a schematic flowchart of a process of preparing the invisible ink according to the present invention; and

(2) FIG. 2A-2C is a schematic view of displaying information about a patient in the medical wristband with invisible information according to the present invention, wherein FIG. 2A is a schematic view of two-dimensional codes in the medical wristband with invisible information under natural light, FIG. 2B is a schematic view of two-dimensional codes in the medical wristband with identified information in the case of UV on, and FIG. 2C is a schematic view of identifying the information about the patient in the wristband by scanning the two-dimensional codes.

DETAILED DESCRIPTION OF THE PRESENT INVENTION

(3) The present invention will be further described below in detail with reference to the accompanying drawings and by embodiments. The implementations of the present invention are, however, not limited thereto.

Embodiment 1

(4) Invisible Ink Containing a Single Dye and a Preparation Method Thereof

(5) Referring to FIG. 1, which is a flowchart of a process of preparing the invisible ink, the process of preparing the invisible ink comprises following steps.

(6) S1: PS microspheres are prepared by micro-emulsification. PS particles are dissolved in a toluene solution to obtain a PS-toluene solution having a content of the PS of 1% by mass fraction, and a single fluorescent dye anthracene is added to obtain a PS-toluene@anthracene fluorescent solution having a content of the dye of 0.1% by mass fraction.

(7) S2: 2 mL 1 wt % PS-toluene@coumarin6 solution and 14 mL of the SDS solution having a concentration of 5 mg/mL are provided and stirred, after adding magnetons therein, on a magnetically driven rotating mechanism for 1 h at 300 r/min, to obtain a system to be ultrasonically emulsified.

(8) S3: The solution obtained in S2 is ultrasonically emulsified on an ultrasonic cell crusher at power 10%, with five cycles within 1 min (2 s/2 s), and then stirred on the magnetically-driven rotating mechanism for 24-48 h at 300 r/min, until the toluene is completely volatilized.

Embodiment 2

(9) Invisible Ink Containing Two Dyes and a Preparation Method Thereof

(10) S1: PS microspheres are prepared by micro-emulsification. PS particles are dissolved in a toluene solution to obtain a PS-toluene solution having a content of the PS of 1% by mass fraction, and both fluorescent dyes, i.e., coumarin6 and anthracene (a ratio of coumarin6 to anthracene by mass is 1%:99%), are added to obtain a PS-toulene@coumarin6@anthracene fluorescent solution having a content of the dyes of 0.1% by mass fraction.

(11) S2: 2 mL of 1 wt % PS-toluene@anthracene solution and 14 mL of the SDS solution having a concentration of 5 mg/mL are provided and stirred, after adding magnetons therein, on a magnetically-driven rotating mechanism for 1 h at 300 r/min, to obtain a system to be ultrasonically emulsified.

(12) S3: The solution obtained in S2 is ultrasonically emulsified on an ultrasonic cell crusher at power 10%, with five cycles within 1 min (2 s/2 s) and then stirred on the magnetically-driven rotating mechanism for 24-48 h at 300 r/min, until the toluene is completely volatilized.

Embodiment 3

(13) A Medical Wristband with Invisible Information

(14) The information is written, as two-dimensional codes, on a piece of non-fluorescent paper by the invisible fluorescent ink prepared in embodiments 1 and 2. The written paper is colorless under natural light. The information is invisible in the case of UV off and the information is visible in the case of UV on. Information about a patient can be identified by scanning by an intelligent device. The medical wristband with invisible information and the displayed information are shown in FIG. 2A-2C.

(15) The PS fluorescent particles are centrifugally extracted and mixed with glycerol to obtain a high-viscosity mixture ink by which coating or printing can be realized by a patterned stamp. In the case of UV on, at 365 nm, the information can be identified and read by scanning by conventional scanning software, for example, by the scanning function in a mobile phone.

(16) The embodiments are merely preferred implementations of the present invention, and the implementations of the present invention are not limited thereto. Any other alternations, modifications, replacements, combinations and simplifications made without departing from the spirit essence and principle of the present invention shall be regarded as equivalent substitutions and shall fall into the protection scope of the present invention.