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EP0247880A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
An oscillometric blood pressure monitoring device
Assignee: Baxter International Inc
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Filing: 1987-05-28
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Granted: —
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Expires: 2007-05-28
Abstract
Abstract An assembly for use in oscillometric blood pressure monitoring, comprising: (a) a tube (36) having a free end (34) and a flexible, stretchable bladder (24) which is mounted to and across the free end (34) of the tube (36) and which is pressurizable up to a pressure of at least about 200 Torr so as to expand out in front of the free end (34) of the tube (36) and means (42) for limiting the lateral expansion of the bladder (24) relative to the tube (36) in a way which will allow it to produce pressure pulses when the bladder (24) is placed externally directly against the person adjacent the artery (14) such that the bladder (24) and not the tube (36) engages the person and is thereafter pressurized in the controlled way. (b) means (28) for pressurizing the bladder (24) through the tube (36) in the controlled way; and (c) means (26) for holding the bladder (24) externally against the temporal artery (14) as the bladder (24) is pressurized in the controlled way.
Inventors
- 👤 William Trevor Link
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 14:08
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/68; A61B5/6801; A61B5/6843; A61B5/02; A61B5/021; A61B2562/00; A61B2562/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
175 words
An assembly (22) for use in oscillometric blood pressure monitoring, comprising: (a) a tube (36) having a free end (34) and a flexible, stretchable bladder (Z4) which is mounted to and across the free end (34) of the tube (36) and which is pressurizable up to a pressure of at least about 200 Torr so as to expand out in front of the free end (34) of the tube (36) and means (42) for limiting the lateral expansion of the bladder (24) relative to the tube (36) in a way which will allow it to produce pressure pulses when the bladder (24) is placed externally directly against the person adjacent an artery (14) such that the bladder (24) and not the tube (36) engages the person and is thereafter pressurized in the controlled way. (b) means (28) for pressurizing the bladder (24) through the tube (36) in the controlled way; and (c) means (26) for holding the bladder (24) externally against the temporal artery (14) as the bladder (24) is pressurized in the controlled way.
Claim 2
Dependent Claim
175 words
An assembly (22) for use in oscillometric blood pressure monitoring, comprising: (a) a tube (36) having a free end (34) and a flexible, stretchable bladder (Z4) which is mounted to and across the free end (34) of the tube (36) and which is pressurizable up to a pressure of at least about 200 Torr so as to expand out in front of the free end (34) of the tube (36) and means (42) for limiting the lateral expansion of the bladder (24) relative to the tube (36) in a way which will allow it to produce pressure pulses when the bladder (24) is placed externally directly against the person adjacent an artery (14) such that the bladder (24) and not the tube (36) engages the person and is thereafter pressurized in the controlled way. (b) means (28) for pressurizing the bladder (24) through the tube (36) in the controlled way; and (c) means (26) for holding the bladder (24) externally against the temporal artery (14) as the bladder (24) is pressurized in the controlled way.
Claim 3
Dependent Claim
43 words
An assembly as claimed in claim 1 wherein a flexible membrane (24) serves as the bladder and the expansion limiting means includes netting (42) cooperating with the membrane (24) so as to limit the expansion of the membrane (24) to a predetermined configuration.
Claim 4
Dependent Claim
18 words
An assembly as claimed in claim 2 wherein the netting (42) is integrally formed into the membrane (24).
Claim 5
Dependent Claim
20 words
An assembly as claimed in claim 2 wherein the netting (42) is formed on the outside of the membrane (24).
Claim 6
Dependent Claim
78 words
An assembly as claimed in any one of the preceding claims, which is adapted to measure the pressure in the temporal artery or another artery adjacent the person's skull and wherein the bladder holding means comprises: (a) head band means (50) configured to fit tightly about the head of the person; (b) clamp means (26) configured to fit tightly about the head of the person; (c) a vacuum suction arrangement (62); or (d) an adhesive bonding arrangement (84,86).
Claim 7
Dependent Claim
48 words
An assembly as claimed in claim 5 (d) wherein the bonding arrangement includes a plurality of individual adhesive bonding segments (84) movable with respect to one another to a limited extent so as to conform to a non-planar surface such as the external temporal area of an individual.
Claim 8
Dependent Claim
34 words
An assembly as claimed in any one of the preceding claims wherein the expansion limiting means (42) limits the size of the bladder to an internal volume of at most about two cubic centimeters.
Claim 9
Dependent Claim
28 words
An assembly as claimed in any one of the preceding claims wherein the pressurizing means includes a piezoelectric pump, a source of CO₂ or means for heating gas.
Claim 10
Dependent Claim
18 words
An assembly as claimed in any one of the preceding claims which is connected to a transducer (30).
Claim 11
Dependent Claim
146 words
A bladder unit, comprising a tube (36) having a free end (34) and a flexible, stretchable bladder (24) which is mounted to and across the free end (34) of the tube (36) and which is pressurizable up to a pressure of at least about 200 Torr so as to expand out in front of the free end (34) of the tube (36) and means (42) for limiting the lateral expansion of the bladder (24) relative to the tube (36) in a way which will allow it to produce pressure pulses when the bladder (24) is placed externally directly against the person adjacent an artery (14) such that the bladder (24) and not the tube (36) engages the person and is thereafter pressurized in the controlled way, the bladder unit optionally being as further defined in any one or more of claims 2 to 4 or 7.
References Cited (Backward Citations)
No citation records indexed.
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