News Column

Patent Issued for Drug Delivery Device

August 27, 2014



By a News Reporter-Staff News Editor at Journal of Engineering -- A patent by the inventor Tang, James (Taipei, TW), filed on August 2, 2010, was published online on August 12, 2014, according to news reporting originating from Alexandria, Virginia, by VerticalNews correspondents.

Patent number 8800551 is assigned to Gold Nanotech Inc. (TW).

The following quote was obtained by the news editors from the background information supplied by the inventors: "(1) Field of the Invention

"The invention relates to a quantitatively controlled drug delivery device having a drug-can that can be assembled and replaced so that the continuous or single-time minor quantitative injection of the used drug can be selected.

"(2) Description of the Prior Art

"There are many devices for the cosmetic and medical needleless injection and microscopic treatment, and the frequently seen injector almost has a gun-shaped body having a chamber for loading the drug or other substances. The chamber is connected to a high-pressure gas. According to the high-pressure principle, the injector is pressed on the skin of the patient. When a trigger is pushed, the drug liquid is rapidly injected from a muzzle in an atomized manner.

"This injector has the convenience in use and the utility, and is thus accepted by the masses. However, its structure design still has some drawbacks to be improved.

"First, the power source of the injector for injecting the liquid in the atomized manner depends on the pressure of the high-pressure gas. When the external gas pressure is coupled to the injector, the adjustment has to be made manually. If the set pressure is not uniform, the spraying effect is not good. When no external gas pressure is coupled to the injector, the stability of the gas pressure control depends on the human's hand control. So, the spraying effect is not good because the applied force is not uniform.

"Second, the injector usually cannot be disassembled, and the user cannot disassemble it to perform the cleaning and maintaining works. Especially, the simple failure elimination cannot be achieved by the user.

"Third, the drug cannot be conveniently filled, or the drug bottle cannot be conveniently installed and replaced in some injectors, and the process is time-consuming and labor-consuming. In addition, when the drug is injected, the residual drug liquid is often left in the bottle, so that the injection amount of the drug is not precise, and the effect is naturally affected.

"Fourth, the typical injector only can input the drug according to a single method set by the manufacturer, so that the flexibility and convenience in use are naturally limited.

"The factors mentioned hereinabove have proved that the existing needleless injector still has to be improved.

"In view of the associated problems induced by the design defects of the conventional drug delivery device, the present inventor has paid attention to the research and development according to the experience and the technology in manufacturing the associated products for many years, and thus developed this novel, convenient and utility drug delivery device to benefit the industry and the masses."

In addition to the background information obtained for this patent, VerticalNews journalists also obtained the inventor's summary information for this patent: "A main object of the invention is to provide a drug delivery device having the continuous quantitative injection and capable of controlling the minor liquid drug and replacing the drug-can.

"Another object of the invention is to provide an assembling type drug delivery device so that the damaged or dirty members may be disassembled, cleaned or replaced.

"Still another object of the invention is to provide a drug delivery device for enabling selection of the type of the injection drug-can. The embedded drug-can connecting seat is used in conjunction with the replaceable drug-can container inside the drug delivery device, and the external drug-can container is used in conjunction with the external drug-can connecting seat outside the drug delivery device. Furthermore, an ultrasonic oscillation device may be attached to the external drug-can container so that the finer spraying effect can be obtained, and the agile, convenient and diversified effects may be obtained.

"The invention achieves the above-identified objects by providing a drug delivery device, which has an assembled structure and includes the units of: a housing that may be opened and closed to form an opening; an adjustment seat capable of adjusting a range distance; a drug delivery pressuring tube for pressuring and atomizing the drug; and a drug-can connecting seat for enabling selection of the type of the injected drug-can, wherein the damaged or dirty units may be disassembled and cleaned or replaced. The drug delivery device has one end formed with a fixed connection seat coupled to mainstream and substream gas pressures provided by a control source. The substream gas pressure provides the quantitative gas delivery function, while the mainstream gas pressure provides the function of pressuring and jetting the drug to inject in an atomized manner.

"The working principle will be described in the following. The control source with the external supplied inert gas utilizes a proportional valve as a controller for the quantitative drug output to supply the substream gas pressure coupled to the depressuring gas communication tube in the drug delivery device through one conduit, and to supply the mainstream gas pressure coupled to the drug delivery pressuring tube in the drug delivery device via the other conduit. The drug delivery pressuring tube may be optionally assembled to an embedded drug-can connecting seat and coupled to the drug-can container in conjunction with the depressuring gas communication tube structure to obtain the continuous, stable and minor gas delivery function to push the drug liquid quantitatively. Alternatively, the externally inputted drug may be adopted, wherein an external drug-can container directly injects the drug into the external drug-can connecting seat, and the drug is inputted to the drug delivery pressuring tube for pressuring, jetting and injecting the drug in an atomized manner. Furthermore, the drug-can containers may further be provided with ultrasonic oscillation devices so that the outputted drug has the finer atomizing effect.

"Further aspects, objects, and desirable features of the invention will be better understood from the detailed description and drawings that follow in which various embodiments of the disclosed invention are illustrated by way of examples."

URL and more information on this patent, see: Tang, James. Drug Delivery Device. U.S. Patent Number 8800551, filed August 2, 2010, and published online on August 12, 2014. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=8800551.PN.&OS=PN/8800551RS=PN/8800551

Keywords for this news article include: Gold Nanotech Inc.

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Source: Journal of Engineering


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