Sampling device of suction effusion fluid

• US 5,782,871 A
• Filed: 02/25/1997
• Issued: 07/21/1998
• Est. Priority Date: 02/28/1996
• Status: Expired due to Fees

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Matsumoto, Toru, Fujiwara, Hidetaka
• Primary Examiner(s): Weiss, John G.
• Assistant Examiner(s): Cho, David J.
• Application Number:
  US08/804,687
• Time in Patent Office: 511 Days
• Field of Search: 604/289, 604/311, 604/312, 604/313, 604/315, 604/35, 604/131, 600/575, 600/573, 600/577, 600/578, 600/579
• US Class Current: 604/313
• CPC Class Codes: A61B 10/0045 Devices for taking samples of body liquids devices for taking blood samples A61B5/15
• CPC Class Codes: A61B 2010/008 Interstitial fluid
• CPC Class Codes: A61B 2017/00765 Decreasing the barrier function of skin tissue by radiated energy, e.g. using ultrasound, using laser for skin perforation
• CPC Class Codes: A61M 1/08 Cupping glasses , i.e. for enhancing blood circulation
• CPC Class Codes: A61M 2039/0202 for taking samples

Abstract

A sampling device of the suction effusion fluid that is good in sampling operation efficiency. This device includes a cell with a vacuum suction port and a skin suction port, a slide valve formed in the cell, and fluid reservoirs formed in the valve. The slide valve is movable in a plane approximately parallel to the skin surface. The slide valve opens or closes a communication path communicating the skin suction port with the vacuum suction port. Each of the fluid reservoirs is alternately communicated with the skin suction port and the vacuum suction port through the communication path by sliding movement of the slide valve. Each of the fluid reservoirs stores an effusion fluid acquired from the skin surface by vacuum suction through the skin suction port. When the slide valve is located at a position where one of the fluid reservoirs is communicated with the skin suction port and the vacuum suction port, at least one of the remaining fluid reservoirs is exposed to the outside of the cell. The slide valve preferably has a rod or disk shape.

Claims

1. A sampling device of a suction effusion fluid including:

(a) a cell having a vacuum suction port and a skin suction port;

said vacuum suction port being designed to be connected to a vacuum source on operation;

said skin suction port being designed to be opposite to a skin surface on operation;

(b) a slide valve formed in said cell to be movable in a plane approximately parallel to said skin surface;

said slide valve being used for opening or closing a communication path communicating said skin suction port with said vacuum suction port without releasing the vacuum source of said vacuum suction port to maintain an airtight condition; and

(c) a plurality of fluid reservoirs formed in said slide valve;

each of said fluid reservoirs being alternately communicated with said skin suction port and said vacuum suction port through said communication path by sliding movement of said slide valve;

each of said fluid reservoirs being used for storing an effusion fluid acquired from said skin surface by vacuum suction through said skin suction port;

wherein said fluid reservoirs are formed in said slide valve; and

wherein when said slide valve is located at a position where one of said fluid reservoirs is communicated with said skin suction port and said vacuum suction port, at least one of said remaining fluid reservoirs is exposed to the outside of the cell.

2. A device as claimed in claim 1, wherein said slide valve is translatable along a straight line in said plane.

3. A device as claimed in claim 2, wherein said slide valve has a rod-like shape;

and wherein said straight line is a longitudinal axis of said shape.

4. A device as claimed in claim 1, wherein said slide valve is turnable around an axis in said plane.

5. A device as claimed in claim 4, wherein said slide valve has a disk-like shape;

and wherein said shaft is located at the center of said shape.

6. A device as claimed in claim 1, wherein said slide valve has check valves for preventing said effusion fluid stored in said corresponding fluid reservoirs from back-flowing toward said skin suction port;

and wherein said check valves are located at bottoms of said corresponding fluid reservoirs, respectively.

7. A device as claimed in claim 1, wherein said slide valve has detachable cartridges;

and wherein said fluid reservoirs are formed in said cartridges, respectively, so that said fluid reservoirs are detachable from said slide valve.

8. A device as claimed in claim 1, wherein said slide valve has detachable cartridges;

and wherein said fluid reservoirs are formed in said corresponding cartridges, respectively, so that said fluid reservoirs are detachable from said slide valve;

and wherein each of said cartridges has a check valve for preventing said effusion fluid stored in a corresponding one of said fluid reservoirs from flowing toward said skin suction port;

and wherein said check valves are located at bottoms of said corresponding fluid reservoirs, respectively;

and wherein said check valves are detachable from said slide valve together with said corresponding cartridges, respectively.

9. A device as claimed in claim 1, further comprising a valve for opening and closing said communication path communicating said skin suction port with said vacuum suction port;

said valve is driven to be interlocked with sliding movement of said slide valve.

10. A device as claimed in claim 9, wherein said valve opens said communication path when each of said fluid reservoirs is communicated with said skin suction port and said vacuum suction port;

and wherein said valve closes said communication path when none of said fluid reservoirs is communicated with said skin suction port and said vacuum suction port.

11. A device as claimed in claim 1, further comprising:

a first valve for opening and closing said skin suction port; and

a second valve for opening and closing said vacuum suction port;

wherein said first and second valves are driven to be interlocked with sliding movement of said slide valve.

12. A device as claimed in claim 11, wherein said first and second valves open said communication path when each of said fluid reservoirs is communicated with said skin suction port and said vacuum suction port;

and wherein said first and second valves close said communication path when none of said fluid reservoirs is communicated with said skin suction port and said vacuum suction port.

13. A sampling device of a suction effusion fluid including:

(a) a cell having a vacuum suction port and a skin suction port;

said vacuum suction port being designed to be connected to a vacuum source on operation;

said skin suction port being designed to be opposite to a skin surface on operation;

(b) a plurality fluid reservoir formed in said cell to be communicated with said skin suction port and said vacuum suction port;

said fluid reservoir being used for storing an effusion fluid acquired from said skin surface by vacuum suction through said skin suction port; and

(c) a slide valve formed in said cell to be movable in a plane approximately parallel to said skin surface;

said slide valve being used for opening or closing a path communicating said skin suction port with said vacuum, suction port;

characterizing in that

said slide valve has fluid reservoirs;

each of said fluid reservoirs is alternately communicated with said skin suction port and said vacuum suction port through said path; and

when said slide valve is located at a position where any one of said fluid reservoirs is communicated to said skin suction port and said vacuum suction port, at least one of said remaining fluid reservoirs is exposed to the outside of said cell.