Simple blood sampling device

• US 5,320,607 A
• Filed: 01/11/1993
• Issued: 06/14/1994
• Est. Priority Date: 02/13/1992
• Status: Expired due to Fees

• Current Assignee: Kabushiki Kaisya Advance
• Original Assignee: Kabushiki Kaisya Advance
• Inventors: Ishibashi, Hiromu
• Primary Examiner(s): Hafer, Robert A.
• Assistant Examiner(s): RIMELL, SAMUEL G
• Application Number:
  US08/003,054
• Time in Patent Office: 519 Days
• Field of Search: 604/22, 604/36, 604/48, 604/51, 604/73, 604/76, 604/115, 604/118, 604/181
• US Class Current: 604/115
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150145 by negative pressure, e.g. suction, vacuum
• CPC Class Codes: A61B 5/150427 Specific tip design, e.g. for improved penetration characteristics
• CPC Class Codes: A61B 5/15113 Manually triggered, i.e. the triggering requires a deliberate action by the user such as pressing a drive button
• CPC Class Codes: A61B 5/15142 Devices intended for single use, i.e. disposable

Abstract

A simple blood sampling device composed of a vacuum chamber, a skin suction portion and a piercing and cutting means.

Claims

1. A skin-adhesive blood sampling device comprising:

a sealed vacuum chamber in a state of preexisting reduced pressure;

a support member for the sealed vacuum chamber, said support member defining a suction portion adjacent the sealed vacuum chamber, said suction portion, in cooperation with said sealed vacuum chamber, exposing an area of skin of a patient to a reduced pressure state when the device is actuated;

means arranged within the suction portion for slightly rupturing a portion of the area of skin of the patient exposed to the reduced pressure state; and

said support member having adhesive means for securely fixing the device to a surface of the body of the patient so as to maintain the reduced pressure state during suction and collection of blood through the slightly ruptured portion of the area of skin of the patient.

2. The device as claimed in claim 1 wherein the support member further comprises a stopper material arranged around an outer periphery of the suction portion so as to cause friction with skin thereunder.

3. The device as claimed in claim 1 wherein the rupturing means is disposed along an inner periphery of the suction portion so as to painlessly cut epidermis sliding thereto.

4. The device as claimed in claim 2 wherein the rupturing means is disposed along an inner periphery of the suction portion so as to painlessly cut epidermis sliding thereto.

5. The device as claimed in claim 1 wherein the rupturing means is a cutting means.

6. The device as claimed in claim 1 wherein the rupturing means is a piercing means.