US RE42754 E1
A blood pressure measuring apparatus includes an inflatable sleeve adapted to be wrapped about a limb of a patient. The sleeve includes an interior and at least one socket provided on an exterior surface of the sleeve, the socket being fluidly connected to the interior of the sleeve. A gage is directly attached to the sleeve socket through attachment of a mating engagement portion. A pneumatic bulb is also attached fluidly to the sleeve through a receiving port which is provided on at least one of the socket and the gage.
1. A blood pressure measuring apparatus comprising:
an inflatable sleeve adapted to be wrapped about a limb of a patient, said sleeve including an interior and at least one socket provided in an exterior surface of said sleeve, said at least one socket including an opening that is fluidly and directly connected to the interior of said inflatable sleeve;
a gage housing having an integral mating end releasably fitted directly into said at least one socket provided on the exterior surface of said sleeve;
a pneumatic means for inflating said sleeve; and
means for attaching said pneumatic means to said sleeve, said attaching means including a receiving means provided on one of said at least one socketand, said mating end of said gage housing and an adapter releasably fitted into said at least one socket.
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10. A blood pressure measuring system, said system comprising:
a unitary flexible sleeve member which is adapted to be wrapped around the limb of a patient, said sleeve member including an exterior surface and an inflatable interior;
a gage housing having a mating end;
a hose adapter; and
at least one socket provided within said exterior surface, said at least one socket including an opening that is fluidly and directly connected to the inflatable interior of said sleeve member, said at least one socket being adapted for interchangeably receiving at least one of said gage housing and said hose adapter, said gage housing and said hose adapter being releasably and directly connected in interchangeable fashion to said at least one socket without intermediate hoses therebetween, and in which each of said gage housing and said hose adapter are mechanically supported solely by said at least one socket when connected to said sleeve member.
11. A system as recited in claim 10, wherein said at least one socket is secured to the exterior surface of said unitary flexible sleeve member.
12. A system as recited in claim 11, wherein said at least one socket is welded to the exterior surface of said unitary flexible sleeve member.
13. A system as recited in claim 10, wherein said sleeve member includes at least a pair of sockets.
14. A system as recited in claim 10, wherein said at least one socket includes a substantially cylindrical body having a cavity, said body being substantially recessed within the interior of said unitary flexible sleeve member and including an upper lip that is substantially coplanar with the exterior surface.
15. A system as recited in claim 10, wherein said at least one socket is adapted to permit said at least one of said gage housing and said hose adapter to be rotatably supported thereupon.
This invention is directed to the field of medical diagnostic instruments, and in particular to a preferred interconnection between a gage housing and an inflatable sleeve of a blood pressure measuring apparatus.
Typical blood pressure measuring instruments include an inflatable sleeve which is wrapped about the limb (i.e., arm or leg) of a patient. A pneumatic bulb is tethered by a hose and is fully interconnected to the sleeve interior. A gage which includes a dial face having a set of indicia is separately interconnected also by means of a hose to the sleeve interior. The gage includes an interior movement mechanism which is responsive to changes in pressure within the sleeve interior. The pressure changes produce circumferential movement of an indicating member attached to the movement mechanism relative to the set of indicia on the dial face of the gage.
Both the gage and the pneumatic bulb are tethered individually to the sleeve which includes corresponding barbs or receiving ports which permit fluid communication with the interior of the sleeve.
More recently, Applicants have devised a blood pressure measuring apparatus, such as described in copending U.S. Ser. No. 09/669,474, the entire contents of which are incorporated by reference in which the gage is directly attached to a port or socket which is integrally provided in the inflatable sleeve. This form of attachment is advantageous because the apparatus is far more compact than previously known devices of this type. Furthermore, the attachment eliminates any need for hoses between the gage and the inflatable sleeve. Moreover, the gage can be rotatably attached to the socket/sleeve permitting both left and right limb attachment and also allowing both a care giver and the patient to easily read the dial face of the gage and perform a blood pressure measurement.
There is still a general need in the field, however, to further simplify the manufacture and design of a blood pressure measuring apparatus.
According to an embodiment of the invention, there is described a blood pressure measuring apparatus comprising an inflatable sleeve having at least one port and a pneumatic bulb tethered to said sleeve through a hose, one end of said hose being attached to said pneumatic bulb and a remaining end of said hose being attached to a port on said sleeve. The measuring apparatus further includes a gage having a dial face with readable indicia and a movement mechanism which is responsive to fluid pressure changes in said sleeve, said gage being directly attached to said at least one socket of said inflatable sleeve, the socket permitting one end of the gage to be directly connected to the sleeve without the use of a hose.
A port is provided to receive the hose end extending from the pneumatic bulb wherein this receiving port can be provided on at least one of the sleeve socket and the gage.
In either instance, and by providing the receiving port on either the socket or the gage which directly mounts to the inflatable sleeve, the design and manufacturability of a blood pressure measuring apparatus is greatly simplified in comparison to previously known apparatus of this type.
According to another embodiment of the invention, there is described a blood pressure measuring apparatus including an inflatable sleeve having at least one port sized for directly receiving a gage wherein the gage includes an engagement portion which is sealingly fitted into said at least one port. The gage further includes a receiving port for receiving fluid input from a pneumatic means, such as a depressible bulb which is attached thereto.
According to yet another embodiment of the invention, there is disclosed a blood pressure measuring apparatus including an inflatable sleeve containing a pair or sockets each sized for receiving the mating end of a gage. A receiving port is provided on at least one of the sockets or the gage to permit attachment of a depressible bulb or other pneumatic means used to inflate the sleeve.
For a further understanding of the invention, reference will be made to the following Detailed Description which is to be read in connection with the accompanying drawings, wherein:
A second prior art blood pressure measuring device 32 is partially shown in
The gage 30 illustrated in
In operation, the interior 40 of the sleeve 38 is inflated by squeezing a depressible bulb 21,
Air entering the sleeve interior 40 is also caused to enter the gage 30 through the socket opening 42 and also through an opening 68 provided at the bottom of the gage. Entering air causes axial upward movement of the movable surface 116 of the diaphragm 114 which is imparted to the end of an axially displaceable shaft member 130 which is vertically supported therein. The shaft member 130 is also caused to rotate as well as translate due to constraints provided by a helically wound ribbon spring 134 made from beryllium copper or other similar spring material. The ribbon spring 134 is supported at one upper end to an intermediate portion of the shaft member 130 and at an opposite end to a fixed portion of the gage 30.
Rotation of the shaft member 130 due to the flexion of the helically wound ribbon spring 134 causes corresponding circumferential movement of an attached indicating member 136 attached to an extending end of the shaft member. The indicating member 136 is disposed in relation to the indicia of the dial face 82. Additional details regarding the herein described movement mechanism described herein are provided in U.S. Pat. Nos. 5,966,829 and 6,120,458, the entire contents of each being herein incorporated by reference, while further details relating to the socket and the direct interconnection of a gage to an inflatable sleeve are provided in previously incorporated U.S. Ser. No. 09/669,474.
Having supplied the preceding background and now referring to
An inflatable sleeve 38 includes an interior 40, the sleeve being made from a pair of sleeve portions 44, which are interconnected together as previously described. A specific type of sleeve which can be used for these purposes is described in previously incorporated U.S. Pat. No. 6,036,718. As previously noted, however, it should be apparent that other bladderless and bladder-type sleeve designs can be utilized.
One of the sleeve portions 44 includes a socket 62 which is attached by welding or other means to a slot, the socket being fluidly interconnected to the interior 40 of the sleeve 38 through an opening 66. The socket 62 extends above the plane of the exterior of a sleeve portion 44 and includes a laterally projecting receiving port 86 which is sized to receive a depending end of a hose 19 of a pneumatic assembly 20,
The pneumatic assembly 20 includes a flexible depressible bulb 21,
The gage housing 30 according to this embodiment includes a movement mechanism (not shown in this Fig.) as described above such that air entering the socket 65 is directed into the sleeve interior 40 through opening 66 and into the interior of the gage 30 through opening 68.
According to a second embodiment as shown in
In operation, the apparatus functions similarly wherein the hose 19 of the pneumatic assembly 20,
Following inflation in either embodiment, the bleed valve 27,
Other embodiments utilizing the inventive concepts described herein are possible. For example and referring to
Providing a pair of sockets 202, 206 on the inflatable sleeve 200 provides significant versatility in the location of a gage 30, 30A which is directly mounted thereupon.
According to yet another alternate variation, a port adapter 210 is illustrated in
While the present invention has been described with reference to the preferred embodiments, it should be readily apparent that modifications and variations are possible without departing from the intended scope of the invention as defined by the claims.