Chemical liquid injection system
First Claim
1. A chemical liquid injection system at least comprising:
- a liquid syringe including a cylindrical cylinder member and a piston member slidably inserted into the cylinder member from the back thereof the cylinder member including an annular cylinder flange formed on an outer circumference of a trailing end; and
a chemical liquid injector for injecting the liquid into a patient by relatively moving the cylinder member and the piston member of the liquid syringe, wherein the liquid syringe has an RFID chip put on a predetermined position of the cylinder member for wirelessly transmitting recorded data, the chemical liquid injector includes a cylinder holding mechanism for holding the cylinder member, a piston driving mechanism for at least pressing the piston member into the held cylinder member, an RFID reader for wirelessly receiving the recorded data from the RFID chip, and a computer unit configured to allow operation of the piston driving mechanism only when the recorded data is wirelessly received, wherein the RFID reader continuously detects the RFID chip during injection, and if said detection is interrupted, injection operation by the piston driving mechanism is stopped, and the RFID chip can communicate with the RFID reader when the cylinder holding mechanism holds the cylinder member in a particular direction of rotation about the center, and the RFID chip cannot communicate with the RFID reader when the cylinder member is at a position after rotation to a predetermined angle from the particular direction.
1 Assignment
0 Petitions
Accused Products
Abstract
A medical liquid injection system capable of automatically preventing a piston drive mechanism from being driven when a cylinder holding mechanism does not hold a medical liquid syringe properly. When a cylinder member (210) is being held, in a specific direction of rotation about the axis of the mechanism, by a cylinder holding mechanism (120), an RFID chip (230) and an RFID reader (131) become communicable, making the piston drive mechanism operable. On the other hand, when the cylinder member (210) has been rotated by a specified angle from a specific direction, the RFID chip (230) and the RFID reader (131) become incommunicable, not making the piston drive mechanism operable. As a consequence, the piston drive mechanism is not driven when the cylinder holding mechanism (120) is not holding the medical liquid syringe properly.
-
Citations
20 Claims
-
1. A chemical liquid injection system at least comprising:
- a liquid syringe including a cylindrical cylinder member and a piston member slidably inserted into the cylinder member from the back thereof the cylinder member including an annular cylinder flange formed on an outer circumference of a trailing end; and
a chemical liquid injector for injecting the liquid into a patient by relatively moving the cylinder member and the piston member of the liquid syringe, wherein the liquid syringe has an RFID chip put on a predetermined position of the cylinder member for wirelessly transmitting recorded data, the chemical liquid injector includes a cylinder holding mechanism for holding the cylinder member, a piston driving mechanism for at least pressing the piston member into the held cylinder member, an RFID reader for wirelessly receiving the recorded data from the RFID chip, and a computer unit configured to allow operation of the piston driving mechanism only when the recorded data is wirelessly received, wherein the RFID reader continuously detects the RFID chip during injection, and if said detection is interrupted, injection operation by the piston driving mechanism is stopped, and the RFID chip can communicate with the RFID reader when the cylinder holding mechanism holds the cylinder member in a particular direction of rotation about the center, and the RFID chip cannot communicate with the RFID reader when the cylinder member is at a position after rotation to a predetermined angle from the particular direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
- a liquid syringe including a cylindrical cylinder member and a piston member slidably inserted into the cylinder member from the back thereof the cylinder member including an annular cylinder flange formed on an outer circumference of a trailing end; and
-
15. A chemical liquid injector used in a chemical liquid injection system, said chemical liquid injector adapted to inject the liquid into a patient by moving a cylinder member relative to a piston member of a liquid syringe, said injector comprising:
- a cylinder holding mechanism for holding the cylinder member;
a piston driving mechanism for at least pressing the piston member into the held cylinder member;
an RFID reader for wirelessly receiving the recorded data from an RFID chip mounted on the liquid syringe at a predetermined position of the cylinder member for wirelessly transmitting recorded data; and
a computer unit configured to allow operation of the piston driving mechanism only when the recorded data is wirelessly received, wherein the RFID reader continuously detects the RFID chip during injection and if said detection is interrupted, injection operation by the piston driving mechanism is stopped, and the RFID chip can communicate with the RFID reader when the cylinder holding mechanism holds the cylinder member in the particular direction, and the RFID chip cannot communicate with the RFID reader when the cylinder member is at a position after rotation to a predetermined angle from the particular direction.
- a cylinder holding mechanism for holding the cylinder member;
-
16. A liquid syringe of used in a chemical liquid injection system, comprising:
- a cylindrical cylinder member and a piston member slidably inserted into the cylinder member from the back thereof;
the cylinder member including an annular cylinder flange formed on an outer circumference of a trailing end;
an RFID chip for wirelessly receiving recorded data put on the cylinder member at a predetermined position, and an RFID reader, wherein the RFID reader continuously detects the RFID chip during injection, and if said detection is interrupted, injection operation by the piston driving mechanism is stopped, the RFID chip can communicate with the RFID reader when the cylinder holding mechanism holds the cylinder member in the particular direction, and the RFID chip cannot communicate with the RFID reader when the cylinder member is at a position after rotation to a predetermined angle from the particular direction.
- a cylindrical cylinder member and a piston member slidably inserted into the cylinder member from the back thereof;
-
17. A chemical liquid injection system comprising:
-
a cylindrical cylinder member and a piston member slidably inserted into the cylinder member; an RFID chip fixedly disposed with respect to the cylinder member; a cylinder holding mechanism for holding the cylinder member at a predetermined position of the cylinder member; a piston driving mechanism for pressing the piston member into the cylinder member when being held by the cylinder holding mechanism for injecting a liquid into a subject; and an RFID reader fixedly disposed with respect to the cylinder holding mechanism, wherein the RFID reader can wirelessly communicate with the RFID chip when the cylinder holding mechanism holds the cylinder member at the predetermined position and cannot communicate with the RFID chip when the cylinder holding mechanism does not hold the cylinder member at a position of the cylinder member away from the predetermined position, and the RFID reader continuously detects the RFID chip during injection, and if said detection is interrupted, injection operation by the piston driving mechanism is stopped. - View Dependent Claims (18, 19, 20)
-
Specification