Disposable saline water cartridge module for radiopharmaceuticals dispensing and injection system

• US 20050203330A1
• Filed: 01/28/2005
• Published: 09/15/2005
• Est. Priority Date: 02/06/2004
• Status: Abandoned Application

• Current Assignee: Chi-Dau Shih
• Original Assignee: Chi-Dau Shih
• Inventors: Muto, Akio, Hu, Chi-Min
• Application Number:
  US11/044,196
• Publication Number:
  US 20050203330A1
• Time in Patent Office: Days
• US Class Current: 600/1
• CPC Class Codes: A61M 2205/12 with interchangeable cassettes forming partially or totally the fluid circuit
• CPC Class Codes: A61M 5/007 for contrast media
• CPC Class Codes: G21F 5/015 for storing radioactive sources, e.g. source carriers for irradiation units; Radioisotope containers
• CPC Class Codes: G21F 5/06 Details of, or accessories to, the containers
• CPC Class Codes: G21G 1/0005 Isotope delivery systems use of radioisotopes as tracers G21H5/02

Abstract

A saline water cartridge for radiopharmaceuticals injection includes a casing in which a primary passage extends from an outlet of a saline water reservoir to a radiopharmaceuticals inlet port of the cartridge and a secondary passage extends from an opening defined in the primary passage to a radiopharmaceuticals outlet port where a patient injection device is connected to supply the radiopharmaceuticals to the patient. A first one-way membrane valve is arranged in the opening of the primary passage to allow the radiopharmaceuticals injected into the primary passage from a radiopharmaceuticals carrying syringe to flow to the outlet port, while preventing reverse flow. A second one-way membrane valve is arranged in the outlet of the saline water reservoir to allow saline water to replenish into the primary passage while preventing reverse flow.

Claims

1. A saline water cartridge for radiopharmaceuticals injection, comprising:

a casing defining an interior space forming saline water reservoir in which a predetermined amount of saline water is contained, the casing forming an inlet port and an outlet port sealed by needle penetrateable members, the inlet port adapted to receive a needle of a radiopharmaceuticals-carrying syringe that penetrates through the penetrateable member of the inlet port, the outlet port adapted to receive a needle of a patient injection device that penetrates through the penetrateable member of the outlet port, the reservoir forming an outlet;

primary and secondary passages arranged inside the casing, the primary passage extending from the reservoir outlet, through which the saline water is replenished into the primary passage, to the inlet port of the casing, which allows injection of the radiopharmaceuticals contained in the syringe into the primary passage, the primary passage forming an opening communicating the secondary passage that connects to the outlet port of the casing;

a first one-way membrane vale arranged in the opening of the primary passage to allow the saline water inside the primary passage with which the radiopharmaceuticals injected into the primary passage is mixed to flow into the secondary passage while preventing reverse flow of the mixture of the saline water and the radiopharmaceuticals;

a second one-way membrane valve arranged in the outlet of the saline water reservoir to allow the saline water to flow from the reservoir into the primary passage, while preventing reverse flow of the saline water;

wherein the radiopharmaceuticals contained in the syringe, after being injected into the primary passage through the inlet port of the casing, is prevented from flowing into the saline water reservoir by the second membrane valve and is only allowed to flow to the outlet port through the first membrane valve.

2. The saline water cartridge as claimed in claim 1, wherein the first membrane valve is open when the medicine liquid is injected from the radiopharmaceuticals-carrying syringe into the primary passage of the cartridge, while the second membrane valve is closed.

3. The saline water cartridge as claimed in claim 1, wherein when the saline water is replenished into the primary passage, the first membrane valve is closed, while the second membrane valve is open.

4. The saline water cartridge as claimed in claim 1, wherein the saline water reservoir defines a further opening for filling the predetermined amount of saline water into the reservoir, the further opening being closed by a penetrateable film.

5. The saline water cartridge as claimed in claim 4 further comprising an air filter penetrating through the film that closes the further opening of the saline water reservoir.

6. The saline water cartridge as claimed in claim 4, wherein the predetermined amount of saline water is filled into the saline water reservoir before the further opening is closed by the film.

7. The saline water cartridge as claimed in claim 4, wherein the predetermined amount of saline water is filled into the saline water reservoir by an additional device penetrating through the film after the further opening is closed by the film.