Internal dry powder delivery system and method thereof
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61M-013/00
B05B-011/06
A61M-011/00
A61M-015/00
A61B-017/00
출원번호
US-0220105
(2014-03-19)
등록번호
US-9629966
(2017-04-25)
발명자
/ 주소
Ji, Xin
출원인 / 주소
Ji, Xin
대리인 / 주소
Chan, Raymond Y.
인용정보
피인용 횟수 :
0인용 특허 :
2
초록▼
An internal dry powder delivery system through a working channel of an endoscopic cannula for directly applying the powder form medication to an internal tissue/organ site, includes an elongated tubular delivery channel and a powder supply device for producing pressurized gas mixing with the dry pow
An internal dry powder delivery system through a working channel of an endoscopic cannula for directly applying the powder form medication to an internal tissue/organ site, includes an elongated tubular delivery channel and a powder supply device for producing pressurized gas mixing with the dry powder for feeding to form a mixture of dry powder and pressurized gas delivering to an internal tissue/organ site through the delivery channel via endoscopic cannula. It ensures a smooth powder release by preventing liquid from accumulation at the tip of the delivery channel and offers physicians a new powder form drug delivery method via endoscope. Also, it offers new minimal invasive application by directly and precisely applying the powder format drug to the internal sites of human gastrointestinal organ via endoscope to achieve hemostasis, anti-inflammation, anti-ulcer and anti-tumor treatment, etc.
대표청구항▼
1. A method of delivering dry powder to an internal operation site of beings, comprising the steps of: (a) extending a distal end of an elongated tubular delivery channel to a position that an emitting opening of said delivery channel is adjacent to said internal operation site;(b) generating a work
1. A method of delivering dry powder to an internal operation site of beings, comprising the steps of: (a) extending a distal end of an elongated tubular delivery channel to a position that an emitting opening of said delivery channel is adjacent to said internal operation site;(b) generating a working gas flow containing pressurized gas to mix with dry powder to deliver a mixture of dry powder and pressurized gas to said delivery channel until a predetermined amount of said mixture of dry powder and pressurized gas sprays out from said emitting opening of said delivery channel for application onto said internal operation site;(c) generating a maintaining gas flow to said delivery channel for preventing gas reflux of said delivery channel so as to prevent reflux of gas and fluid into said delivery channel, wherein said pressurized gas is mixed with said dry powder in a gas powder chamber to deliver said mixture of dry powder and pressurized gas from said gas powder chamber into said delivery channel, wherein an outlet of said gas powder chamber is communicatively linked to said delivery channel; and(d) bypassing said maintaining gas flow to said gas powder chamber, such that said maintaining gas flow does not pass through said gas powder chamber. 2. The method, as recited in claim 1, further comprising the steps of: (e) configuring a working gas flow channel to communicate with an inlet of said gas powder chamber to guide said working gas flow thereinto; and(f) configuring a maintaining gas flow channel to communicate with a connecting channel, which connects and communicates said outlet of said gas powder chamber with said delivery channel, to guide said maintaining gas flow to said delivery channel. 3. The method, as recited in claim 2, wherein said working gas flow channel and said maintaining gas flow channel are connected to a single gas supplying source. 4. The method, as recited in claim 2, wherein the step (c) further comprises the steps of controlling a supply of said working gas flow to said gas powder chamber via a working gas flow switch, and controlling a supply of said maintaining gas flow to said delivery channel via a maintaining gas flow switch. 5. The method, as recited in claim 1, wherein the step (c) further comprises the steps of controlling a supply of said working gas flow to said gas powder chamber via a working gas flow switch, and controlling a supply of said maintaining gas flow to said delivery channel via a maintaining gas flow switch. 6. The method, as recited in claim 5, wherein said working gas flow switch is connected at said working gas flow channel and said maintaining gas flow switch is connected at said maintaining gas flow channel. 7. The method, as recited in claim 1, wherein said maintaining gas flow is generated to reach said internal operation site before said working gas flow is generated to deliver said mixture of dry powder and pressurized gas at said internal operation site. 8. A method of delivering dry powder to an internal operation site of beings, comprising the steps of: (a) extending a distal end of an elongated tubular delivery channel to a position such that an emitting opening of said delivery channel is adjacent to said internal operation site;(b) generating a flow of pressurized gas and dividing said pressurized gas into a working gas flow and a maintaining flow, the working gas flow provided to mix with dry powder in a gas powder chamber to deliver a mixture of dry powder and pressurized gas to said delivery channel until a predetermined amount of said mixture of dry powder and pressurized gas sprays out from said emitting opening of said delivery channel for application onto said internal operation site, wherein said working gas flow and said maintaining gas flow are generated from a single gas supplying source;(c) preventing reflux of gas and fluid into said delivery channel by said maintaining gas flow generated to said delivery channel; and(d) bypassing said maintaining gas flow to said gas powder chamber, such that said maintaining gas flow does not pass through said gas powder chamber. 9. The method, as recited in claim 8, further comprising the steps of: (e) configuring a working gas flow channel to communicate with an inlet of said gas powder chamber to guide said working gas flow thereinto; and(f) configuring a maintaining gas flow channel to communicate with a connecting channel, which connects and communicates said outlet of said gas powder chamber with said delivery channel, to guide said maintaining gas flow to said delivery channel. 10. The method, as recited in claim 9, wherein said working gas flow channel and said maintaining gas flow channel are connected to said single gas supplying source.
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이 특허에 인용된 특허 (2)
Ferdman Ariel G. ; Pinsky Vladimir J., Apparatus and method for applying a particulate hemostatic agent to living tissue.
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