Automatic ankle brachial pressure index system
First Claim
1. An ABPI and/or TBPI measuring device including:
- a. at least two inflatable cuffs, wherein;
(1) at least one of the cuffs is to be wrapped around an upper limb,(2) at least one of the cuffs is to be wrapped around a lower limb,(3) each of the cuffs has an inflatable proximal limb chamber and an inflatable distal limb chamber spaced therefrom;
b. a pressure sensor providing measurements of the pressures in the proximal and distal limb chambers;
c. a fluid source connected to the chambers of the cuffs,wherein the device includes a control configured to activate the fluid source to;
(1) simultaneously inflate the distal limb chambers;
(2) while the distal limb chambers are inflated, simultaneously inflate the proximal limb chambers;
(3) subsequently deflate the proximal limb chambers; and
(4) subsequently deflate the distal limb chambers.
1 Assignment
0 Petitions
Accused Products
Abstract
An ABPI measurement system includes a cuff for each ankle and a cuff for each arm of a patient. Each cuff has first and second chambers. The four cuffs are applied to each limb (or finger or toe), each chamber is inflated simultaneously to a pressure until a Pneumo Arterial Plethysmography (PAPG) signal related to the arterial flow in the limb is detected at the chambers. The second chambers are then simultaneously inflated until the PAPG signals are extinguished in each limb, the inflation of the second chambers continuing for 10 mmHg to 20 mmHg above the extinguishing pressure. The second chambers are then deflated and the pressure in the second chamber at which the PAPG signal returns in the first chamber is recorded for each limb and this value of the pressure is used to calculate the ABPI. The ABPI is displayed or sent to a remote site.
26 Citations
20 Claims
-
1. An ABPI and/or TBPI measuring device including:
-
a. at least two inflatable cuffs, wherein; (1) at least one of the cuffs is to be wrapped around an upper limb, (2) at least one of the cuffs is to be wrapped around a lower limb, (3) each of the cuffs has an inflatable proximal limb chamber and an inflatable distal limb chamber spaced therefrom; b. a pressure sensor providing measurements of the pressures in the proximal and distal limb chambers; c. a fluid source connected to the chambers of the cuffs, wherein the device includes a control configured to activate the fluid source to; (1) simultaneously inflate the distal limb chambers; (2) while the distal limb chambers are inflated, simultaneously inflate the proximal limb chambers; (3) subsequently deflate the proximal limb chambers; and (4) subsequently deflate the distal limb chambers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. An ABPI and/or TBPI measuring device including:
-
a. an upper limb cuff configured to be wrapped around an upper limb, wherein the upper limb cuff has an inflatable proximal limb chamber and an inflatable distal limb chamber spaced therefrom; b. a lower limb cuff configured to be wrapped around a lower limb, wherein the lower limb cuff has an inflatable proximal limb chamber and an inflatable distal limb chamber spaced therefrom; c. a control configured to; (1) inflate the distal limb chamber of each cuff to obtain a Pneumo Arterial Plethysmography (PAPG) signal; (2) while each cuff'"'"'s distal limb chamber is inflated, inflate the cuff'"'"'s proximal limb chamber until the PAPG signal disappears; (3) deflate the proximal limb chamber of each cuff; (4) measure the pressure in each cuff'"'"'s proximal limb chamber at which the PAPG signal reappears in the cuff. - View Dependent Claims (14, 15, 16, 17, 18, 19)
-
-
20. An ABPI and/or TBPI measuring device including:
-
a. an upper limb cuff configured to be wrapped around an upper limb, wherein the upper limb cuff has an inflatable proximal limb chamber and an inflatable distal limb chamber spaced therefrom; b. a lower limb cuff configured to be wrapped around a lower limb, wherein the lower limb cuff has an inflatable proximal limb chamber and an inflatable distal limb chamber spaced therefrom; c. a control configured to; (1) simultaneously inflate the distal limb chambers until the pressures measured therein provide Pneumo Arterial Plethysmography (PAPG) signals; (2) while the distal limb chambers are inflated, simultaneously inflate the proximal limb chambers until the PAPG signals are no longer detected; (3) subsequently deflate the proximal limb chambers until PAPG signals are again detected in the distal limb chambers; (4) subsequently deflate the distal limb chambers.
-
Specification