Protective shielding assembly for use in loading a hypodermic syringe with radioactive material

• US 4,092,546 A
• Filed: 06/08/1976
• Issued: 05/30/1978
• Est. Priority Date: 06/16/1975
• Status: Expired due to Term

• Current Assignee: Cintichem, Inc.
• Original Assignee: Union Carbide Corporation (Dow, Inc.)
• Inventors: Larrabee, Edward Whittum
• Primary Examiner(s): Dixon, Harold A.
• Application Number:
  US05/690,831
• Time in Patent Office: 721 Days
• Field of Search: 250/432 R, 250/515, 250/519, 250/432 PD, 250/506, 128/1.1, 128/272, 128/214.2
• US Class Current: 250/515.1
• CPC Class Codes: A61J 1/201 having one piercing end
• CPC Class Codes: A61J 1/2051 having tap means, e.g. tap means activated by sliding
• CPC Class Codes: A61J 1/2055 having gripping means
• CPC Class Codes: A61J 1/2065 having aligning and guiding means
• CPC Class Codes: A61J 1/2096 Combination of a vial and a syringe for transferring or mixing their contents
• CPC Class Codes: A61M 5/1782 Devices aiding filling of syringes in situ combination of a vial and a syringe for transferring or mixing their contents A61J1/2096, filling of medical containers in general B65B3/003
• CPC Class Codes: A61M 5/1785 comprising radioactive shield means syringe shields or holders for storage of radioactive sources G21F5/018
• CPC Class Codes: A61M 5/32 Needles; Details of needles pertaining to their connection with syringe or hub infusion needles A61M5/158; Accessories for bringing the needle into, or holding the needle on, the body A61M5/42, A61M5/46 take precedence; guide needles for catheters A61M25/065; Devices for protection of needles apparatus specially adapted for cleaning or sterilising needles A61M5/001
• CPC Class Codes: G21F 5/018 Syringe shields or holders syringe shielding for applying radioactive material to the body A61M5/1785

Abstract

The disclosure of this application is directed to a protective shielding assembly suitable for use in the loading of a hypodermic syringe with radioactive material. The protective shielding device receives and securely holds, at one end, a vial which contains the material to be loaded and at its opposite end a hypodermic syringe with the needle of the syringe approximately centered with respect to the septum of the vial. Penetration of the septum of the vial is effected by moving the slidable members of the protective shielding assembly toward the vial which in turn moves the hypodermic syringe causing the needle of the hypodermic syringe to rupture the vial septum and enter the vial.

Claims

1. A protective shielding assembly, adapted to protect a user from exposure to radiation emitted by a radioactive material, suitable for use in the loading of a hypodermic syringe with said radioactive material, said assembly adapted at one end to be connected to a first protective shield surrounding a vial having a cap and shoulders and at its opposite end adapted to be connected to a second protective shield, surrounding the barrel of said hypodermic syring at the needle end thereof and fixedly holding said hypodermic syringe, said assembly comprising an outer sleeve connectable to said first protective shield and protecting said cap and shoulders of said vial when connected to said first protective shield, an inner protective sleeve connectable to said second protective shield and connected to said outer sleeve, said inner sleeve being in contact with and slidable with respect to said outer sleeve, said inner and outer slidable sleeves being capable of moving said second protective shield toward said vial causing penetration thereof by said needle of said hypodermic syringe, wherein said inner sleeve and at least the portion of said outer sleeve protecting said cap and shoulders of said vial are made of a material comprising lead alloy containing at least 85 percent lead by weight.

2. A protective shielding assembly as defined in claim 1 further including elastomeric O-ring sealing means concentrically mounted within one end of said outer sleeve for connecting said outer sleeve to said first protective shield.

3. A protective shielding assembly, adapted to protect a user from exposure to radiation emitted by a radioactive material, suitable for use in the loading of a hypodermic syringe with said radioactive material, said assembly adapted at one end to be connected to a first protective shield assembly surrounding a vial having a cap and shoulders and at its opposite end adapted to be connected to a second hypodermic syringe at the needle end thereof and fixedly holding said hypodermic syringe, said assembly comprising as concentrically mounted members, an outer sleeve connectable to said first protective shield and having a protective axial extension overlapping said first protective shield and protecting said cap and shoulders of said vial when connected to said first protective shield, an inner protective sleeve connectable to said second protective shield, said outer sleeve and said inner sleeve in contact with and slidably movable with respect to one another, said inner sleeve on being moved toward the vial effecting movement of said second protective shield toward said vial causing penetration thereof by said needle of said hypodermic syringe, wherein said inner sleeve and at least said protective axial extension of said outer sleeve are made of a material comprising a lead alloy containing at least 85 percent lead by weight.

4. A protective shielding assembly as defined in claim 3 further including elastomeric O-ring sealing means concentrically mounted with one end of said outer sleeve for connecting said protective axial extension of said outer sleeve to said first protective shield.

5. A protective shielding assembly, adapted to protect a user from exposure to radiation emitted by a radioactive material, suitable for use in the loading of a hypodermic syringe with said radioactive material, said assembly adapted at one end to be connected to a first protective shield surrounding a vial having a cap and shoulders and at its opposite end adapted to be connected to a second protective shield, surrounding the barrel of said hypodermic syringe at the needle end thereof and fixedly holding said hypodermic syringe, said assembly comprising an inner protective sleeve having a longitudinal slot therein and mounted within an outer sleeve, said outer sleeve having a pin extending through the wall thereof and riding in the slot of said inner sleeve, said pin limiting the degree of slidable movement of said inner sleeve, said outer sleeve having a protective axial extension overlapping said first protective shield and protecting said cap and shoulders of said vial when said outer sleeve is connected to said first protective shield, said outer sleeve slidably mounted on said inner protective sleeve and connected thereto, said inner and outer slidable sleeves being capable of moving said second protective shield toward said vial causing penetration thereof by the needle of the hypodermic syringe, wherein said inner sleeve and at least said protective axial extension of said outer sleeve are made of a material comprising a lead alloy containing at least 85 percent lead by weight.

6. A protective shielding assembly as defined in claim 5 further including elastomeric O-ring sealing means concentrically mounted within one end of said outer sleeve for connecting said protective axial extension of said outer sleeve to said first protective shield.