BODY FLUID SAMPLER AND METHOD THEREFOR

• US 20090234246A1
• Filed: 11/28/2006
• Published: 09/17/2009
• Est. Priority Date: 11/29/2005
• Status: Abandoned Application

• Current Assignee: TTM Co., Ltd.
• Original Assignee: TTM Co., Ltd.
• Inventors: Usui, Tsutomu
• Application Number:
  US12/094,202
• Publication Number:
  US 20090234246A1
• Time in Patent Office: Days
• US Class Current: 600/583
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150412 Pointed piercing elements, e.g. needles, lancets for piercing the skin blade-like piercing elements A61B5/150442
• CPC Class Codes: A61B 5/150503 Single-ended needles hollow piercing element tip design A61B5/150396, needle sets for catheters A61M25/06, needles for bringing media into the body A61M5/32
• 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 5/1519 comprising driving means, e.g. a spring, for propelling the piercing unit
• CPC Class Codes: A61B 5/15194 fully automatically retracted, i.e. the retraction does not require a deliberate action by the user, e.g. by terminating the contact with the patient's skin
• CPC Class Codes: A61B 5/157 Devices characterised by integrated means for measuring characteristics of blood
• CPC Class Codes: A61B 5/417 the bone marrow

Abstract

To provide a body fluid sampling method and its device capable of sampling a minimum necessary amount of blood without loss while reducing a burden on a subject to the minimum. The skin surface of a sampling site is made water repellent. A skin surface thus made water repellent is pierced. A body fluid held in a droplet shape on the pierced skin surface is then collected.

Claims

1. A body fluid sampling device for sampling a small amount of a body fluid, characterized by comprising:

an engaging surface configured to face a skin surface of a sampling site and to bear a water repellent agent;

a lancet needle for piercing the skin surface which has been made water repellent by engagement with the engaging surface; and

a collecting device for collecting a body fluid held in a droplet shape on the pierced skin surface.

2. A lancet for sampling a small amount of a body fluid, characterized by comprising:

an engaging surface configured to face a skin surface of a sampling site and to bear a water repellent agent; and

a lancet needle for piercing the skin surface which has been made water repellent by engagement with the engaging surface.

3. The body fluid sampling device or the lance according to claim 2,

further comprising a movable section movable together with the lancet needle.

4. The body fluid sampling device or the lancet according to claim 2,

wherein the lancet needle is configured to penetrate through the engaging surface.

5. The body fluid sampling device or the lancet according to claim 4,

wherein the engaging surface is provided with a through hole near a center thereof, and

wherein the lancet needle is configured to penetrate and pierce through the through hole.

6. The body fluid sampling device or the lancet according to claim 2,

wherein the engaging surface has a cotton material, a porous structure or an embossed structure for retaining the water repellent agent therein.

9. The body fluid sampling device, the lancet, the disinfectant alcohol or the cotton material impregnated with the disinfectant alcohol according to claim 2,

wherein the water repellent agent comprises silicone, fluorine or water repellent wax.

10. The body fluid sampling device, the lancet, the disinfectant alcohol or the cotton material impregnated with the disinfectant alcohol according to claim 2,

wherein the water repellent agent comprises a solvent which is alcohol, emulsion liquid or oil.

7. A disinfectant alcohol for disinfecting the skin from which a small amount of a body fluid is sampled, characterized by containing a water repellent agent for making the skin at a body fluid sampling site water repellent.

8. The cotton material impregnated with a disinfectant alcohol for disinfecting the skin from which a small amount of a body fluid is to be sampled, characterized by containing a water repellent agent for making the skin at a body fluid sampling site water repellent.

11. A body fluid sampling method for sampling a small amount of a body fluid, characterized by comprising:

a step of making a skin surface at a sampling site water repellent;

a step of forming a pierced hole, using a lancet needle, at the skin surface which has been made water repellent; and

a step of collecting a body fluid held in a droplet shape on the skin surface formed with the pierced hole.

12. The body fluid sampling method according to claim 11, further comprising:

a step of pushing a movable section movable together with the lancet needle, so that when the movable section is pushed after the skin surface is made water repellent, the lancet needle pierces the skin surface to form the pierced hole.