Method and device for monitoring the access to the...

Details Method and device for monitoring the access to the... Method and device for monitoring the access to the...

2005-08-23

2005-08-23

Sykes, Angela D. (Department: 3762)

Surgery

Blood drawn and replaced or treated and returned to body

Constituent removed from blood and remainder returned to body

C604S006090, C604S006100, C604S006110, C210S645000, C210S646000

Reexamination Certificate

active

06932786

ABSTRACT:
A device for monitoring the access to the cardiovascular system of a patient undergoing an extracorporeal treatment of blood in a machine (1) comprising a treatment device (4) and an extracorporeal circuit (2), comprises: a voltage generator (16) for generating a potential difference between a part of the machine (1) and a first point (B) of a venous branch (8) of the extracorporeal circuit (2), connecting the patient to the treatment device (4); a detector (17) for detecting the value (dV) of a quantity that correlates with the electric current along at least one section (10a; 10b; 10c) of the venous branch (10) between the first point (B) and a venous needle (13) fitted at the end of the venous branch (8) and inserted in the vascular system of the patient (P); calculating means (15) for comparing the detected value (dV) with a reference range (I).

REFERENCES:
patent: 3867688 (1975-02-01), Koski
patent: 4661093 (1987-04-01), Beck et al.
patent: 5510717 (1996-04-01), Buffaloe et al.
patent: 5644240 (1997-07-01), Brugger
patent: 5685240 (1997-11-01), Briggs et al.
patent: 6663585 (2003-12-01), Ender
patent: 2067572 (1971-08-01), None
patent: WO 9912588 (1999-03-01), None
patent: WO 9924145 (1999-05-01), None

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