US 12,336,795 B2
Device for venous-pressure sensing
Gianni Plicchi, Bologna (IT)
Assigned to TRE ESSE Progettazione Biomedica S.r.l., Bologna (IT)
Appl. No. 17/421,260
Filed by TRE ESSE Progettazione Biomedica S.r.l., Bologna (IT)
PCT Filed May 28, 2020, PCT No. PCT/IB2020/055060
§ 371(c)(1), (2) Date Jul. 7, 2021,
PCT Pub. No. WO2020/260981, PCT Pub. Date Dec. 30, 2020.
Claims priority of application No. 102019000010248 (IT), filed on Jun. 27, 2019.
Prior Publication US 2022/0022764 A1, Jan. 27, 2022
Int. Cl. A61B 5/0225 (2006.01); A61B 5/00 (2006.01); A61B 5/021 (2006.01); A61B 5/0535 (2021.01)
CPC A61B 5/02255 (2013.01) [A61B 5/02141 (2013.01); A61B 5/0535 (2013.01); A61B 5/6824 (2013.01); A61B 2562/0247 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A device for measuring venous pressure, comprising:
an occlusive element configured to be applied onto a proximal portion of a human limb to apply an occlusion pressure thereto,
a dilation sensing element configured to be applied onto a distal portion of the human limb to sense an extent of dilation thereof,
a control circuit coupled to the occlusive element and the dilation sensing element, the control circuit configured to:
i) control the occlusive element to apply at least one sub-diastolic occlusion pressure and maintain said at least one sub-diastolic occlusion pressure (POC) for an occlusion interval,
ii) obtain from the dilation sensing element a sensing signal,
iii) perform a check of said sensing signal for a certain variation of the dilation of said distal portion of the human limb resulting from said at least one sub-diastolic occlusion pressure being removed after said occlusion interval,
iv) as a result of said check indicating said certain variation of the dilation of said distal portion of the human limb resulting from said at least one sub-diastolic occlusion pressure being removed after said occlusion interval, issue a signal indicating that a venous pressure in said human limb is lower than said at least one sub-diastolic occlusion pressure applied, and
v) as a result of said check failing to indicate said certain variation of the dilation of said distal portion of the human limb resulting from said at least one sub-diastolic occlusion pressure being removed after said occlusion interval, repeat at least i) to iii) by controlling the occlusive element to apply another sub-diastolic occlusion pressure that is higher than a prior sub-diastolic occlusion pressure.