Radioactive gas dispensing device
阅读：445发布：2020-12-22
专利汇可以提供Radioactive gas dispensing device专利检索，专利查询，专利分析的服务。并且A device and method for dispensing a pre-measured amount of gas, such as a radioactive gas, contained in a sealed vial having a pierceable septum. A plurality of such vials are stored in an end-to-end relationship in a shielded tubular storage means. The dispensing device includes a dispenser portion having a pair of needles respectively connected to a gas dispensing adapter and displacement fluid intake adapter. One of the sealed vials is removed from the storage means and retained in a holder which is then inserted into the dispenser portion so that the septum of the vial is in a position opposite the ends of the needles. The vial is moved within the holder toward the needles so that the septum is pierced by the latter. Means are provided for injecting a displacement fluid, which in a particular embodiment may be air, into the vial through the fluid intake adapter and the needle connected thereto, thereby forcing the radioactive gas out from the vial through the other needle to the gas dispensing adapter for use in an appropriate instrument which, for example, may be a breathing apparatus, such as an oral syringe or a spirometer.，下面是Radioactive gas dispensing device专利的具体信息内容。
1. A device for dispensing a pre-measured amount of a stored radioactive gas contained in a sealed vial having a pierceable septum, said device comprising dispenser means having a gas dispensing adapter for dispensing said gas from said device and a displacement gas intake adapter; first needle means mounted in said dispenser means and connected to said displacement gas intake adapter; second needle means mounted in said dispenser means and connected to said gas dispensing adapter; displacement gas injection means, including a source of displacement gas, connected to said displacement gas intake adapter; gas dispensing means connected to said gas dispensing adapter means for holding said sealed vial, said vial holding means being adapted to be releasably connected to said dispenser means so that the pierceable septum of said vial is positioned therein opposite said first and second needle means; means for relatively moving said vial and said first and second needle means within said dispenser means so that said vial comes into contact with said first and second needle means to pierce said septum, said first and second needle means thereupon extending into the gas filled interior of said vial to provide communication between the interior of said vial and said gas dispensing adapter through said second needle means and between the interior of said vial and said source of displacement gas through said first needle means; whereby, displacement gas may be injected into said vial from said displacement gas injection means and upon injection of said displacement gas, a pre-measured amount of said stored radioactive gas is dispensed from the vial and device through said gas dispensing adapter and said gas dispensing means one way valve means for preventing substantial flow of said premeasured amount of radioactive gas from said vial to said source of displacement gas but permitting flow of said displacement gas to said vial from said displacement gas source.
2. A device in accordance with claim 1 wherein said displacement fluid is air.
3. A device for dispensing a pre-measured amount of gas contained in a sealed vial having a pierceable septum, said device comprising dispenser means having a gas dispensing adapter and a displacement fluid intake adapter; piercing means mounted in said dispenser means; displacement fluid injection means connected to said fluid adapter; means for holding said sealed vial, said vIal holding means being adapted to be releasably connected to said dispenser means so that the pierceable septum of said vial is positioned therein opposite said piercing means; means for relatively moving said vial and said piercing means within said dispenser means so that said vial comes into contact with said piercing means to pierce said septum, said piercing means thereupon extending into the gas filled interior of said vial whereby, upon injection of said displacement fluid, a pre-measured amount of said gas is dispensed at said gas dispensing adapter said displacement fluid being air, said displacement fluid injection means being a collapsible air containing means comprising a flexible bulb and said dispenser means further including rigid means adjacent said flexible bulb, whereby said bulb may be collapsed against the surface of said rigid means.
4. A device in accordance with claim 3 wherein said rigid means extends from said dispenser means and is shaped so as to provide a hand-gripping configuration whereby said flexible bulb can be collapsed by squeezing said flexible bulb against said rigid means.
5. A device in accordance with claim 1 wherein said gas is radioactive and said vial holding means includes means for shielding said vial to attenuate the escape of radioactive energy from said gas through said holding means.
6. A device in accordance with claim 5 wherein said shielding means comprises a lead liner enclosing at least a portion of said vial in said vial holding means.
7. A device in accordance with claim 1 wherein said moving means comprises a plunger having means at one end thereof for contacting said vial within said holder means and means at the other end thereof adapted to be moved externally of said vial holding means.
8. A device in accordance with claim 7 wherein said plunger is mounted in an insert at one end of said vial holding means.
9. A device in accordance with claim 7 wherein said gas is radioactive and said vial contacting means includes a shielding member substantially covering the end of said vial with which it comes into contact for attenuating the escape of radioactive energy from said gas at said end of said vial.
10. A device in accordance with claim 1 wherein said dispenser means includes an insert, said gas dispensing adapter, said displacement fluid intake adapter and said first and second needles means being mounted in said insert.
11. A device in accordance with claim 10 wherein said insert is removable from said dispenser means.
12. A device in accordance with claim 10 and further including means for guiding the movement of said vial within said dispenser means.
13. A device in accordance with claim 12 wherein said guiding means comprises a recess in said insert, said first and second needles extending into said recess and said recess having a configuration substantially conforming to the configuration of said vial whereby said vial moves within said recess and its septum moves toward and into contact with said first and second needles therein.
14. A method for loading and dispensing a pre-measured amount of radioactive gas contained in a sealed vial having a pierceable septum comprising the steps of removing said vial from a radioactive shielded storage tube in which a plurality of said vials are stored in end-to-end relation so that said pierceable septum is held in an exposed position; inserting said removed vial into a gas dispensing device; said removing and inserting steps comprising holding an open end of said tube over and in alignment with an open end of a vial holding device forming part of said gas dispensing device and sliding said vial adjacent said open end of said tube from said tube into said vial holding device piercing said exposed septum at two locations when said vial has been inserted in said vial holding device feeding from a source thereof a displacement gas into said vial through one of said pierced locations to force said rAdioactive gas out from said vial through the other of said locations to a dispensing means of said gas dispensing device and from said dispensing means out of said dispensing device without permitting substantial escape of said radioactive gas from said vial to said source.
15. A method for loading and dispensing a pre-measured amount of a radioactive gas contained in a sealed vial having a pierceable septum comprising the steps of removing said vial from an elongated radioactive shielded storage tube containing a plurality of said vials in end-to-end relation so that siad pierceable septum is held in an exposed position; inserting said removed vial into a gas dispensing device; piercing said exposed septum at two locations when said vial has been inserted in said gas dispensing device; feeding a displacement fluid into said vial through one of said pierced locations to force said gas out from said vial through the other of said locations to a dispensing means of said dispensing device; said tube having an opening at one end with a removable cover, said removing and inserting steps including removing said cover from said storage tube to expose said opening; holding said opening of said storage tube so that it is contiguously aligned with the opening of a radioactive shielded vial holder of said gas dispensing device and sliding said vial adjacent said open end of said tube from the storage tube into said vial holder; inserting said vial holder loaded with said vial into the open end of a radioactive shielded chamber of a dispenser portion of said gas dispensing device; and slidably forcing said vial in said holder to a position in which said septum is pierced at said two locations by two pierceable needles mounted on said dispenser portion and extending into the other end of said chamber, whereby said vial is loaded into said gas dispensing device and the radioactive gas therein is dispensed with a minimal exposure to radioactive energy from said radioactive gas.
16. A method in accordance with claim 15 wherein said displacement fluid is air and said feeding step includes collapsing an air containing means to provide a supply of said air; and feeding said air to said vial through an intake means of said gas dispensing device.
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