Blood analyzer

• US 5,577,499 A
• Filed: 10/03/1994
• Issued: 11/26/1996
• Est. Priority Date: 10/03/1994
• Status: Expired due to Fees

• Current Assignee: Leonides Y. Teves
• Original Assignee: Leonides Y. Teves
• Inventors: Teves, Leonides Y.
• Primary Examiner(s): Sykes, Angela D.
• Assistant Examiner(s): WINAKUR, ERIC FRANK
• Application Number:
  US08/317,074
• Time in Patent Office: 785 Days
• Field of Search: 128/632, 128/634, 128/635, 128/637, 128/765, 128/760, 128/766, 204/403, 204/415, 436/63, 436/68, 73/19.1, 73/53.01
• US Class Current: 600/368
• CPC Class Codes: A61B 5/14542 for measuring blood gases A61B5/14551 takes precedence
• CPC Class Codes: A61B 5/1468 using chemical or electrochemical methods, e.g. by polarographic means A61B5/1486 takes precedence
• CPC Class Codes: A61B 5/15003 for venous or arterial blood
• CPC Class Codes: A61B 5/150992 Blood sampling from a fluid line external to a patient, such as a catheter line, combined with an infusion line; blood sampling from indwelling needle sets, e.g. sealable ports, luer couplings, valves tubing connectors and couplings A61M39/00

Abstract

A blood analyzer includes a display means that visually informs operating room personnel of the instantaneous condition of a patient'"'"'s blood. Arterial or central venous tubing connects the analyzer to a blood vessel, either arterial, venous, or both, of the patient. In a first embodiment, a plurality of sensor means are positioned within a primary chamber of the analyzer. In a second embodiment, a secondary chamber in valved fluid communication with the primary chamber enables introduction of blood thereinto and a port is provided for entry of a syringe needle so that reactants may be introduced into the secondary chamber so that an additional test may be performed. In a third embodiment, the primary chamber is in valved fluid communication with a conventional pressure transducer.

Claims

1. A device for analyzing blood, comprising:

a chamber of hollow construction;

said chamber adapted to hold a predetermined quantity of a patient'"'"'s blood;

a first sensor means disposed within said chamber;

said first sensor means having a first end immersed within blood in said chamber when said predetermined quantity of said patient'"'"'s blood is within said chamber;

a display means exterior to said chamber;

means electrically connecting an unimmersed second end of said first sensor means and said display means so that a signal generated by said first sensor means is delivered to said display means;

a tubing means having a leading end adapted for fluid communication with a patient'"'"'s blood vessel and a trailing end in fluid communication with said chamber;

an open-closed valve means disposed in said tubing means for selectively controlling entry of blood into said chamber;

said trailing end of said tubing means being in fluid communication with said chamber through an opening formed in a bottom wall of said chamber, said chamber filling with blood when said open-closed valve means is in an open configuration, said blood flowing into said chamber under an impulse provided by said patient'"'"'s blood pressure;

said display means displaying a numerical value representing a parameter of said patient'"'"'s blood as measured by said first sensor means;

whereby an operating team need not await results of laboratory blood tests during a surgical operation.

2. A device for analyzing blood, comprising:

a chamber of hollow construction;

said chamber adapted to hold a predetermined quantity of a patient'"'"'s blood;

a plurality of sensor means disposed within said chamber;

each sensor means of said plurality of sensor means having a first end immersed within blood in said chamber when said predetermined quantity of said patient'"'"'s blood is within said chamber;

a display means exterior to said chamber;

means electrically connecting an unimmersed second end of each sensor means of said plurality of sensor means and said display means so that signals generated by each sensor means of said plurality of sensor means is delivered to said display means;

a tubing means having a leading end adapted for fluid communication with a patient'"'"'s blood vessel and a trailing end in fluid communication with said chamber;

an open-closed valve means disposed in said tubing means for selectively controlling entry of blood into said chamber;

said trailing end of said tubing means being in fluid communication with said chamber through an opening formed in a bottom wall of said chamber, said chamber filling with blood when said open-closed valve means is in an open configuration, said blood flowing into said chamber under an impulse provided by said patient'"'"'s blood pressure;

said display means displaying a plurality of numerical values representing a plurality of parameters of said patient'"'"'s blood as measured by said plurality of sensor means;

whereby an operating team need not await results of laboratory blood tests during a surgical operation.

3. The device of claim 2, wherein said plurality of sensor means includes a sodium sensor.

4. The device of claim 2, wherein said plurality of sensor means includes a potassium sensor.

5. The device of claim 2, wherein said plurality of sensor means includes a carbon dioxide sensor.

6. The device of claim 2, wherein said plurality of sensor means includes an oxygen sensor.

7. The device of claim 2, wherein said plurality of sensor means includes a pH sensor.

8. The device of claim 2, wherein said plurality of sensor means includes a blood sugar sensor.