Blood withdrawal patch

A patch for facilitating installation of a catheter in a patient with a needle and for confining body fluid from the needle wound comprising

• an absorbent pad having a first surface to be placed against the skin of a patient around an intended puncture site 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 the selected puncture site whereby a selected body part can be located through the membrane and cover and a needle can be passed through said membrane and the patient's skin into the body part for catheter installation and whereby, after installation, the needle is extracted, the membrane wipes the needle and forms a seal with the catheter and a cavity with the pad and the patient's skin to contain body fluid from the puncture site.

A fluid injection or withdrawal product comprising

• an envelope with a sterile interior;
• a first patch in said envelope comprising
• an absorbent pad having a first surface to be placed against the skin of a patient around an intended penetration site and a central opening;
• a transparent, elastomeric, self-sealing membrane through which an injection or withdrawal 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;
• and
• a seal in said envelope, said seal comprising an opaque pad having an adhesive surface for covering said membrane after extraction of the needle therefrom.