James D Han

US Patent:

7022098, Apr 4, 2006

Filed:

Apr 10, 2002

Appl. No.:

10/120703

Inventors:

Ramesh Wariar - Tampa FL, US
James Han - Palm Harbor FL, US
George Lamberson - New Port Richey FL, US
Thomas P. Hartranft - Clearwater FL, US
Thore Falkvall - Helsingborg, SE

Assignee:

Baxter International Inc. - Deerfield IL
Baxter Healthcare Corporation - Wallisellen

International Classification:

A61M 37/00
B01D 11/00

US Classification:

604 608, 604 501, 210646

Abstract:

Apparatuses, devices, systems and methods for detecting access disconnection are provided. The present invention includes electrical contacts in fluid and electrical communication with a fluid passing between a patient and a medical system during therapy. In this regard, the present invention can use a direct-contact measurement to detect access disconnection, such as dislodgment of an access device from the patient through which fluid can flow during therapy including, for example, medication delivery, dialysis therapy and the like.

US Patent:

7052480, May 30, 2006

Filed:

Apr 10, 2002

Appl. No.:

10/120684

Inventors:

James Han - Palm Harbor FL, US
Thomas P. Hartranft - Clearwater FL, US
Thomas D. Kelly - Tampa FL, US
Angel Lasso - Tampa FL, US

Assignee:

Baxter International Inc. - Deerfield IL
Baxter Healthcare S.A. - Wallisellen

International Classification:

A61M 37/00
B01D 11/00
C02F 1/00
A61B 5/00

US Classification:

604 401, 601 501, 210646, 210746, 210739, 600371, 439909

Abstract:

Apparatuses, devices, systems and methods for detecting access disconnection during medical therapy are provided. The present invention includes an electric circuit coupled to, for example, a blood circuit used during dialysis therapy. The electric circuit can inject an electrical signal into the blood circuit such that changes in an electrical value in response to access disconnection, such as needle drop-out or catheter drop-out, can be effectively detected.

US Patent:

7138088, Nov 21, 2006

Filed:

Apr 10, 2002

Appl. No.:

10/121006

Inventors:

Ramesh Wariar - Tampa FL, US
James Han - Palm Harbor FL, US
George Lamberson - New Port Richey FL, US
Thomas P. Hartranft - Clearwater FL, US
Thore Falkvall - Helsingborg, SE

Assignee:

Baxter International Inc. - Deerfield IL

International Classification:

A61M 1/14
A61M 37/00
C02F 1/44
C02F 1/00

US Classification:

422 44, 604 401, 604 501, 604 504, 604 606, 210645, 210646, 210739, 210746

Abstract:

Apparatuses, devices, systems and methods for detecting access disconnection are provided. The present invention includes electrical contacts in fluid and electrical communication with a fluid passing between a patient and a medical system during therapy. In this regard, the present invention can use a direct-contact measurement to detect access disconnection, such as dislodgment of an access device from the patient through which fluid can flow during therapy including, for example, medication delivery, dialysis therapy and the like.

US Patent:

7682328, Mar 23, 2010

Filed:

Jan 16, 2006

Appl. No.:

11/331609

Inventors:

James Han - Palm Harbor FL, US
Thomas P. Hartranft - Clearwater FL, US
Thomas D. Kelly - Tampa FL, US
Angel Lasso - Tampa FL, US

Assignee:

Baxter International Inc. - Deerfield IL

International Classification:

A61M 37/00
C02F 1/44

US Classification:

604 504, 604 609, 604 611, 604606, 210645, 210746

Abstract:

An extracorporeal blood system includes: (i) an extracorporeal blood machine; an extracorporeal blood circuit coupled operably to the machine, the extracorporeal blood circuit including first and second blood lines, the blood lines configured to be in blood flow communication with a patient; (ii) an electrical loop including first and second electrodes placed in contact with blood flowing through the extracorporeal blood circuit; (iii) a device configured to inject an electrical signal into the blood circuit via the loop; and (iv) a third electrode placed in contact with blood flowing through the extracorporeal blood circuit, the third electrode configured to enable a change in an electrical value to be measured so that an access disconnection of the extracorporeal blood circuit from the patient can be measured.

US Patent:

7959594, Jun 14, 2011

Filed:

Jan 25, 2006

Appl. No.:

11/338988

Inventors:

Ramesh Wariar - Tampa FL, US
James Han - Palm Harbor FL, US
George Lamberson - New Port Richey FL, US
Thomas P. Hartranft - Clearwater FL, US
Thore Falkvall - Helsingborg, SE

Assignee:

Baxter International Inc. - Deerfield IL
Baxter Healthcare S. A. - Glattpark (Opfikon)

International Classification:

A61M 37/00
C02F 1/44

US Classification:

604 616, 604 401, 604 501, 210646, 210746

Abstract:

Apparatuses, devices, systems and methods for detecting access disconnection are provided. In one embodiment, a medical fluid system includes (i) a medical fluid machine and (ii) a device operable with the medical fluid machine, the device configured to provide electrical contact with a medical fluid, the device including (a) a tube used during dialysis therapy through which the medical fluid can flow, and (b) a conductive element configured to self-sealingly pierce the tube, the conductive element having a first portion exposed to the medical fluid and a second portion external to the tube.

US Patent:

8137300, Mar 20, 2012

Filed:

Mar 19, 2010

Appl. No.:

12/727993

Inventors:

James Han - Palm Harbor FL, US
Thomas P. Hartranft - Clearwater FL, US
Thomas D. Kelly - Tampa FL, US
Angel Lasso - Tampa FL, US

Assignee:

Baxter International Inc. - Deerfield IL
Baxter Healthcare S.A. - Glattpark (Opfikon)

International Classification:

A61M 37/00
C02F 1/44

US Classification:

604 609, 604 504, 604 611, 210645, 210746

Abstract:

An extracorporeal blood system includes: an extracorporeal blood machine including an extracorporeal blood circuit; an access device enabling the extracorporeal blood circuit to be connected to a patient; first and second tube connecting members for connecting respectively to first and second tubes of the extracorporeal circuit; first and second electrodes held, at least in part, by the first and second tube connecting members so as to contact blood flowing through the extracorporeal blood circuit, the first and second electrodes enabling an electrical signal to be injected into the extracorporeal blood circuit; first and second contact members contacting the first and second electrodes respectively; and electronics coupled operably to the first and second contact members for applying the electrical signal, the signal used to monitor the access device.

US Patent:

8529490, Sep 10, 2013

Filed:

Jun 9, 2011

Appl. No.:

13/157010

Inventors:

Ramesh Wariar - Tampa FL, US
James Han - Palm Harbor FL, US
George Lamberson - New Port Richey FL, US
Thomas P. Hartranft - Clearwater FL, US
Thore Falkvall - Helsingborg, SE

Assignee:

Baxter International Inc. - Deerfield IL
Baxter Healthcare S.A. - Glattpark (Opfikon)

International Classification:

A61M 37/00
C02F 1/44

US Classification:

604 616, 604 401, 604 501, 210646, 210746

Abstract:

An access disconnection method for a machine employing a blood circuit, the blood circuit having a machine segment and a patient access segment, the method comprising: injecting an electrical signal into the blood circuit between the machine segment and the patient access segment; attempting to cause the electrical signal to flow through only the patient access segment and to bypass the machine segment; and measuring the signal in the patient access segment and determining that an access disconnection event has occurred upon a threshold change in the measured signal.

US Patent:

20120215151, Aug 23, 2012

Filed:

Mar 5, 2012

Appl. No.:

13/412249

Inventors:

James Han - Palm Harbor FL, US
Thomas P. Hartranft - Clearwater FL, US
Thomas D. Kelly - Tampa FL, US
Angel Lasso - Tampa FL, US

Assignee:

BAXTER HEALTHCARE S.A. - Glattpark (Opfikon)
BAXTER INTERNATIONAL INC. - Deerfield IL

International Classification:

A61M 1/14

US Classification:

604 611, 604 616

Abstract:

An extracorporeal blood machine includes a blood circuit; an access device enabling the blood circuit to be connected to a patient; first and second coupling devices for connecting to first and second tubes of the circuit; first and second electrodes held by the first and second coupling devices to contact blood flowing through the blood circuit, the electrodes enabling an electrical signal to be injected into the circuit; first and second contact members contacting the first and second electrodes, wherein at least one of the coupling devices includes a stem portion enabling at least one of the first and second contact members to contact at least one of the first and second electrodes, respectively, on an outer portion of the at least one electrode without disturbing blood flowing through the coupling device; and electronics coupled operably to the first and second contact members for applying the electrical signal.