Protective tool for therapeutic material delivery device, cartridge for therapeutic material delivery device, and a therapeutic material delivery device

• US 6,988,981 B2
• Filed: 12/05/2003
• Issued: 01/24/2006
• Est. Priority Date: 12/15/2000
• Status: Expired due to Fees

• Current Assignee: Kawasumi Laboratories Incorporated (Sumitomo Bakelite Company Limited)
• Original Assignee: Kawasumi Laboratories Incorporated (Sumitomo Bakelite Company Limited)
• Inventors: Hamazaki, Kuniharu
• Primary Examiner(s): Lacyk, John P.
• Application Number:
  US10/727,554
• Publication Number:
  US 20040122351A1
• Time in Patent Office: 781 Days
• Field of Search: 600 1- 8, 250/506.1, 250/515.1, 414/146, 604/57, 604/110, 604/164.09, 604/263, 604/187, 604/192, 604/197, 604/198, 604/271, 604/272, 606/139, 606/213, 206/438
• US Class Current: 600/7
• CPC Class Codes: A61N 2005/101 Magazines or cartridges for seeds
• CPC Class Codes: A61N 2005/1011 Apparatus for permanent insertion of sources
• CPC Class Codes: A61N 5/1007 Arrangements or means for the introduction of sources into the body
• CPC Class Codes: A61N 5/1027 Interstitial radiation therapy

Abstract

A protective tool for a therapeutic material delivery device prevents wrong sticking of the outer needle of the device after use and prevents dissipation of blood adhering to the outer needle and comprises a cover (8′A) and a cap (61) or stopper (65) attached to a forward end of said cover for protecting the forward end of the outer tubular needle (2A), wherein said cover (8′A) is formed of a plurality of tubes (8′A1, 8′A2, 8′A3, . . . ) having different diameters that are formed so as to consecutively decrease from a forward place to the outer needle hub (2B) in a backward place, and said tubes are thereby connected such that the cover (8′A) is extendable in the longitudinal direction, and a cartridge for use with the therapeutic material delivery device permits direct calibration of a radioactive source charged therein and comprises a transparent cartridge body (8, 18, 38) that holds said therapeutic material (10) inside and permits external visual observation of the therapeutic material (10) and a shielding outer tube (9, 19, 39) that is fitted on an outer circumference of the cartridge body, is slidable in the longitudinal direction of said cartridge body and is made of a radioactive ray shielding material, said cartridge body (8, 18, 38) being exposable with said sliding of said shielding outer tube.

Claims

1. A protective tool for a therapeutic material delivery device comprising an outer needle having an outer tubular needle and an outer needle hub supporting the outer tubular needle, the protective tool being configured to be attached to said outer needle for the protection thereof,

the protective tool comprising a cover and a cap or stopper attached to a forward end of said cover for protecting the forward end of the outer tubular needle,

wherein said cover is formed of a plurality of tubes having different diameters that are formed so as to consecutively decrease from a forward place to the outer needle hub in a backward place, and said tubes are thereby connected such that the cover is extendable in the longitudinal direction,

wherein said cap has an inner tube formed inside, said inner tube has, made in a bottom thereof, a hole for inserting and passing said outer tubular needle, and said inner tube has, formed in an outer circumference, a groove portion for inserting a forward end of said outer tubular needle.

2. A protective tool for a therapeutic material delivery device comprising an outer needle having an outer tubular needle and an outer needle hub supporting the outer tubular needle, the protective tool being configured to be attached to said outer needle for the protection thereof,

the protective tool comprising a cover and a cap or stopper attached to a forward end of said cover for protecting the forward end of the outer tubular needle,

wherein said cover is formed of a plurality of tubes having different diameters that are formed so as to consecutively decrease from a forward place to the outer needle hub in a backward place, and said tubes are thereby connected such that the cover is extendable in the longitudinal direction,

wherein said stopper is constituted of a tubular opening/closing portion having a forward end and a connector portion,

said opening/closing portion has slits formed in the longitudinal direction, one in an upper portion and the other in a lower portion, said forward end has an opening portion, and said connector portion has pressing portions formed, one on the right and the other on the left, and has cutout grooves formed, one in an upper place and the other in a lower place.

3. A protective tool for a therapeutic material delivery device comprising an outer needle having an outer tubular needle and an outer needle hub supporting the outer tubular needle, a middle needle having a middle tubular needle and a middle needle hub supporting the middle tubular needle and an inner needle having a solid needle and an inner needle hub supporting the solid needle, the outer needle, the middle needle and the inner needle being to be connected for use, the protective tool being configured to be attached to said outer needle for the protection thereof,

which protective tool comprises a cover and a cap or a stopper that is attached to the forward end of said cover for protecting the forward end of said outer tubular needle,

wherein said cover is formed of a plurality of tubes having different diameters that are formed so as to consecutively decrease from a forward place to the outer needle hub in a backward place, and said tubes are thereby connected such that the cover is extendable in the longitudinal direction,

wherein said cap has an inner tube formed inside, said inner tube has, in a bottom thereof, a hole for inserting and passing said outer tubular needle, and said inner tube has, formed in an outer circumference thereof, a groove portion for inserting the forward end of said outer tubular needle.

4. A protective tool for a therapeutic material delivery device comprising an outer needle having an outer tubular needle and an outer needle hub supporting the outer tubular needle, a middle needle having a middle tubular needle and a middle needle hub supporting the middle tubular needle and an inner needle having a solid needle and an inner needle hub supporting the solid needle, the outer needle, the middle needle and the inner needle being configured to be connected for use, the protective tool being configured to be attached to said outer needle for the protection thereof,

which protective tool comprises a cover and a cap or a stopper that is attached to the forward end of said cover for protecting the forward end of said outer tubular needle,

wherein said cover is formed of a plurality of tubes having different diameters that are formed so as to consecutively decrease from a forward place to the outer needle hub in a backward place, and said tubes are thereby connected such that the cover is extendable in the longitudinal direction,

wherein said stopper is constituted of a tubular opening/closing portion having a forward end and a connector portion,

said opening/closing portion has slits formed in the longitudinal direction, one in an upper portion and the other in a lower portion, said forward end has an opening portion, and said connector portion has pressing portions formed, one on the right and the other on the left, and has cutout grooves formed, one in an upper place and the other in a lower place.