Diagnostic Probe and Kit for Tonometric Examination of Respiratory Insufficiency and Regional Perfusion Failure of the Body

• US 20080058666A1
• Filed: 11/04/2004
• Published: 03/06/2008
• Est. Priority Date: 11/04/2003
• Status: Active Grant

• Current Assignee: Domokos Boda, Szegedi Tudomanyegyetem (Magyar Allam)
• Original Assignee: Szegedi Tudomanyegyetem (Magyar Allam)
• Inventors: Boda, Domokos
• Granted Patent: US 7,981,033 B2
• Time in Patent Office: Days
• US Class Current: 600/532
• CPC Class Codes: A61B 5/00 Measuring for diagnostic purposes radiation diagnosis A61B6/00; diagnosis by ultrasonic, sonic or infrasonic waves A61B8/00; Identification of persons
• CPC Class Codes: A61B 5/08 Detecting, measuring or recording devices for evaluating the respiratory organs A61B5/0205 takes precedence
• CPC Class Codes: A61B 5/14542 for measuring blood gases A61B5/14551 takes precedence
• CPC Class Codes: A61B 5/42 Detecting, measuring or recording for evaluating the gastrointestinal, the endocrine or the exocrine systems A61B1/00, A61B5/4857, A61B5/486, A61B5/4866, A61B5/4869 take precedence

Abstract

The invention relates to a tonometric device (20) for examination of respiratory insufficiency and regional tissue perfusion failure in patients, comprising a distal end (22), a section (24) to be introduced into the body, and a fixing part (3). The section (24) to be introduced comprises a first tube (1) to which an additional tubing (4) is connected. A second tube (2) is arranged substantially parallel with the first tube (1). At least the section (24) of the first tube (1) is made of a material permeable for gases, especially for carbon'"'"' dioxide, but substantially impermeable for body fluids, preferably of silicone rubber. The device does not comprise any balloon, it can be introduced into the patient stomach without preliminary preparation, and is useful for examination of premature babies.

Claims

1-10. -10. (canceled)

11. A tonometric device (20) for examination of respiratory insufficiency and regional tissue perfusion failure in patients comprising a distal end (22) for introducing into the gastrointestinal tract of the body of a patient, a section (24) to be introduced into the body, and a section (3) for fixing the position of the device to the patient, wherein the section to be introduced (24) comprises a first tube (1) to which an additional tubing (4) is connected, characterized in that it comprises a second tube (2) arranged substantially parallel with and fixed to the first tube (1), wherein the distal end (22) of the second tube (2) is in communicating connection with the first tube (1), and the first tube (1) and the second tube (2) are made of a material readily permeable for gases, especially for carbon dioxide but substantially impermeable for body fluids and other substances, preferably of silicone rubber, and an additional tubing (5) is connected to the second tube (2).

12. A device as claimed in claim 11, wherein the diameter of the first and second tubes (1, 2) is substantially constant between the distal end (22) and the fixing section (3).

13. A device as claimed in claim 11, wherein the additional tubings (4, 5) are provided with connecting means (6, 7).

14. A device as claimed in claim 13, wherein the connecting means (6, 7) are constructed for connecting them to the connecting stub of a medical syringe.

15. A device as claimed in claim 11, wherein the outer diameter of the tubes (1, 2) ranges from 1 to 4 mm and the wall thickness ranges from 0.3 to 1.0 mm.

16. A device as claimed in claim 15, wherein the outer diameter of the first tube (1) ranges from 2 to 4 mm and its wall thickness from 0.5 to 1.0 mm, and the outer diameter of the second tube (2) ranges from 1.0 to 1.5 mm and its wall thickness from 0.3 to 0.5 mm.

17. A device as claimed in claim 11, wherein the second tube (2) is built together with the first tube (1), or the second tube (2) is formed as a second passage (2′

) in the wall surrounding the passage (1′

) of the first tube (1).

18. A device as claimed in claim 11, wherein the additional tubings (4, 5) are connected to each other and form a closed system with the tubes (1, 2), wherein the closed system is filled up with an indicator-containing liquid suitable for detecting carbon-dioxide concentration.