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Blood withdrawal patch

  • US 5,738,641 A
  • Filed: 07/31/1996
  • Issued: 04/14/1998
  • Est. Priority Date: 07/31/1996
  • Status: Expired due to Fees
First Claim
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1. A patch for facilitating injection into or withdrawal of blood from a patient and for confining blood from the needle wound comprisingan absorbent pad having a first surface to be placed against the skin of a patient around an intended penetration site for injection or withdrawal and a central opening;

  • a transparent, elastomeric, self-sealing membrane through which a needle can penetrate; and

    a transparent cover layer having an outer surface and an adhesive surface for holding said membrane in said central opening of said pad and for adhering said patch to skin of a patient, and having a central opening substantially aligned with the central opening of said pad to expose a central portion of the membrane allowing visual identification of a selected penetration site whereby a blood vessel can be located through the membrane and cover and a needle can be passed through said membrane and the patient'"'"'s skin into a vessel for injection or blood withdrawal, and whereby, after injection or withdrawal, the needle is extracted, the membrane wipes the needle and forms a cavity with the pad and the patient'"'"'s skin to contain blood from the penetration site until after hemostasis.

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