INSTRUMENT FOR THE WITHDRAWAL OF BODY FLUIDS

• US 3,645,253 A
• Filed: 11/04/1969
• Issued: 02/29/1972
• Est. Priority Date: 11/12/1968
• Status: Expired due to Term

• Current Assignee: Bastiaan Cornelis Goverde, Bernardus Louwerens, Rijkent Hendrik Drost
• Original Assignee: Bastiaan Cornelis Goverde, Bernardus Louwerens, Rijkent Hendrik Drost
• Inventors: Goverde, Bastiaan Cornelis, Drost, Rijkent Hendrik, Louwerens, Bernardus
• Primary Examiner(s): Chamblee, Hugh R.
• Application Number:
  US04/873,903
• Time in Patent Office: 847 Days
• Field of Search: 128/2,276,216,217,218,2F,2G 73/425.6
• US Class Current: 600/578
• CPC Class Codes: A61B 5/15003 for venous or arterial blood
• CPC Class Codes: A61B 5/150236 Pistons, i.e. cylindrical bodies that sit inside the syringe barrel, typically with an air tight seal, and slide in the barrel to create a vacuum or to expel blood
• CPC Class Codes: A61B 5/150244 Rods for actuating or driving the piston, i.e. the cylindrical body that sits inside the syringe barrel, typically with an air tight seal, and slides in the barrel to create a vacuum or to expel blood
• CPC Class Codes: A61B 5/150251 Collection chamber divided into at least two compartments, e.g. for division of samples injection syringes having more than one chamber A61M5/19; syringes for injection of two or more media A61M5/2448, A61M5/284; sample preparation for further analysis A61B5/150755
• CPC Class Codes: A61B 5/150351 Caps, stoppers or lids for sealing or closing a blood collection vessel or container, e.g. a test-tube or syringe barrel caps for bottles or containers in general B65D41/00
• CPC Class Codes: A61B 5/150389 Hollow piercing elements, e.g. canulas, needles, for piercing the skin
• CPC Class Codes: A61B 5/150496 Details of construction of hub, i.e. element used to attach the double-ended needle to a piercing device or sampling device
• CPC Class Codes: A61B 5/150595 by snap-lock (i.e. based on axial displacement)
• CPC Class Codes: A61B 5/150717 manually removed
• CPC Class Codes: A61B 5/150755 Blood sample preparation for further analysis, e.g. by separating blood components or by mixing
• CPC Class Codes: A61B 5/153 Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
• CPC Class Codes: B01L 3/50825 Closing or opening means, corks, bungs closures for containers B65D; means for removing stoppers B67B7/02

Abstract

An improved syringe for the withdrawal of body fluids, especially adapted for transport and storage as well as for the centrifugation of the fluid samples, preferably blood samples, comprises a tube having a hermetically end, the closure of which, being a stopper or cap, is entirely or partly made of resilient material, through which a needle, preferably of stainless steel, extends, which ends in or is tightly pressured against a piston mounted in the tube. Said piston is preferably provided with a concave at the side where the needle ends. Thus a hermetically sealed compartment is obtained through which the needle extends. Said Compartment is suitable for aseptic storage of auxiliaries such as anticoagulants and/or antiseptics.

Claims

1. An instrument for the withdrawal of body fluids comprising a tube having an open end and a hermetically closed opposite end, the interior of said tube being at substantially atmospheric pressure, a closure member at the closed end of the tube providing said hermetic seal which is at least partly made of resilient material through which material a hollow needle extends which terminates in and is sealed by a piston slidably mounted in the interior of said tube provide a hermetically sealed compartment between said closure member and said piston, said compartment being penetrated by said needle, said piston being provided with means for moving the piston away from the closed end of the tube.

2. The instrument of claim 1, in which said closure has a concave communicating with the interior of the tube.

3. The instrument of claim 1, in which said piston possesses a concave portion at the side where the needle terminates in the piston.

4. The instrument of claim 1, in which said piston is fitted with means for fastening a piston rod.

5. The instrument of claim 1, in which the open end of said tube is closed with a cap fitted in the middle with a film which can easily be penetrated by a piston rod.

6. The instrument of claim 1 which includes a piston rod attached to said piston.

7. The instrument of claim 1 in which said needle is provided with a guard to prevent further penetration into said tube.