Medical needle having a visibly marked tip

• US 6,716,192 B1
• Filed: 09/30/1997
• Issued: 04/06/2004
• Est. Priority Date: 09/30/1997
• Status: Expired due to Fees

• Current Assignee: Charles F. Schroeder
• Original Assignee: Charles F. Schroeder
• Inventors: Orosz, Steven J. Jr.
• Primary Examiner(s): Sykes, Angela D.
• Assistant Examiner(s): BIANCO, PATRICIA
• Application Number:
  US08/940,601
• Time in Patent Office: 2,380 Days
• Field of Search: 604/115-117, 604/187-189, 604/181, 604/239, 604/264, 604/272, 604/118, 600/573, 600/576, 600/413, 600/414, 600/424, 600/462, 600/429, 128/917, 128/919, 606/130
• US Class Current: 604/117
• CPC Class Codes: A61B 5/15003 for venous or arterial blood
• CPC Class Codes: A61B 5/150389 Hollow piercing elements, e.g. canulas, needles, for piercing the skin
• 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 5/150824 by visual feedback
• CPC Class Codes: A61B 5/1535 comprising means for indicating vein or arterial entry A61B5/1545 takes precedence
• CPC Class Codes: A61M 2205/583 by visual feedback
• CPC Class Codes: A61M 5/46 having means for controlling depth of insertion

Abstract

A medical needle for withdrawal of blood from a patient or for insertion in medicinal containers in which the end of a needle extending from the body of a syringe is provided with one or more marks at its end region to indicate the depth of penetration of the needle below the skin surface of a patient in a given site so that the depth of penetration can be indicated as well as the degree of withdrawal of the needle in such instances as when the needle is required to be partially pulled out maneuvered below the skin to seek an artery for withdrawal of blood. In addition, the end of the needle is provided with coloring and a marking such that it is more visible than the bare stainless steel needles of conventional type thereby assisting in prevention of accidental needle sticks in either the technician or the patient.

Claims

1. A medical needle of the type usually combined with a syringe for withdrawal of blood from a patient comprising a longitudinal needle body extending to a sharp tipped insertion end,

said sharp end having a distinctly risible marking to facilitate accuracy of use and with minimum possibility of accidental sticks in the user add proximate persons, said marking being a color mark at said end different from the color of said body,

said color mark being an iridescent color.

2. A medical needle of the type usually combined with a syringe for withdrawal of blood from a patient comprising a longitudinal needle body extending to a sharp tipped insertion end,

said sharp end having a distinctly visible marking to facilitate accuracy of use and with minimum possibility of accidental sticks in the user and proximate persons,

said mark being formed of fluorescent matter.

3. A medical needle of the type usually combined with a syringe for withdrawal of blood from a patient comprising a longitudinal needle body extending to a sharp tipped insertion end,

said sharp end having a distinctly visible marking to facilitate accuracy of use and with minimum possibility of accidental sticks in the user and proximate persons,

said mark being formed of phosphorescent matter.

4. In a process of withdrawing blood from a patient with a syringe and needle assembly the method of inserting said needle into the patient comprising

inserting the tip of the needle into the skin of the patient in the vicinity of an artery and directing it to said artery,

providing a color mark surrounding the tip of said needle to facilitate accurate directioning of said needle toward said artery in the insertion site and inserting said needle into said artery.

5. In the process set forth in claim 4 wherein in the event the artery is missed pulling the needle partially out of the patient until said mark at the tip is partially visible,

maneuvering said needle tip inserted into the skin carefully below the surface of the skin in said insertion site and

redirecting said needle tip for said insertion into said artery.