US945389A

US945389A - Sphygmomanometer.

Info

Publication number: US945389A
Application number: US46452408A
Authority: US
Inventors: Max Herz
Original assignee: Individual
Current assignee: Individual
Priority date: 1908-11-27
Filing date: 1908-11-27
Publication date: 1910-01-04
Anticipated expiration: 1927-01-04

Description

M. HERZ. SPHYGMOMANOMBTBB.

Arrmouron rmm Nov. 2L 190s.

UNITED sTATEs PATENT oEEIcE.A

MAX HEEz, or VIENNA, AUsTEIA-HIntentar.l

SPHYGMOMANOMETEE.

l'o all whom it 'may concern:

le it known that I, MAX HERZ, a subject ot' the Emperor of Austria-Hungary, and resident of Vienna, Austria-Hungary, have invented a new and useful Improvement in `Sphygmomanonleters, ot' which the followling is a specification.

' manently closed at its outer end.'

ynometer, partly in section, s

A further object is to provide certain improvements in the form, construction and arrangement ot the various parts of the spl1ygmo-1nano1neter Wliich make it more convenient and accurate in use. y

A practical embodimentot my invention is shown lin the Iaccompanying drawings lin which,

Figure 1 is a view of my sphygmo-malowing the globule of mercury in a non-operative position, Fig. 2 is a section taken in the plane of the line A-A of Fig. 1, looking in the direction of the arrows, Fig. 3 is a view, partly in section, the full lines showing the device in position for 'permitting the mercury globule to take its operative position, and the dotted lines ,showing how the manometer is commonly held When in use, the air bag being secured about the wrist of the patient .and the mercury globule being in its operative position, and Fig. 4 is a view, partly in section, of a modified 'form of manometer.

The manometer comprises an enlarged outer portion l, a bulb 2 and an elongated transparent intermediate portion 3. The outer portionV is closed except as it communicates with the intermediate portion. The hole through the intermediate portion 3 flares slightl as at 4, Where that portion joins the bu b 2. The bulb 2 is provided with a. nipple 5 extending Within and Without the same, the part within the bulb being bent back upon itself, as at 6, to prevent the escape of the globule of mercury 7 from the said bulb.

The intermediate portion 3 of the manometer may be graduatedvin any desired manner, for instance, as shown in Figs. l, 3 and .4, the zero mark being located at the oint in the flare 4, which the mercury globu e occu- Specication of Letters latent. Application lei November 27, 1908. Serial No. 464,524.

lual setting.

pies when dropped thereinto, as hereinafter described.

The air ba 8 is composed of any suitable material, an is referably oblong in shape, and is connecte to the outer extension of the nipple 5 by means of a iexible tube 9.

In the preferred form, shown in Figs. l and 3, the intermediate portion of the manometer is straight. In the modiiied form, shown in Fig. 4, the intermediate portion ot' the manometer 1s spiral in shape.

In operation, the manometer is inverted, as shown in Fig. 3, thus causing the mercury globule to take its operative position in the liare 4, a'nd close the intermediate portion, thus imprisoning the air in the intermediate and outer portions. The manometer may then be held in any desired position, as the mercury globule will remain 1n its operative is Wrapped snugly about the same and' pressed against the artery until the pulse disappears; the blood pressure in the artery will compress the air bag and thus'forcc air through the tube 9 and nipple 5 into' the bulb 2 ot' the manometer. This air pressure will drive the mercury globule into the intermediate portion of the manometer, compressing 4the air therein. The pressure of the patients blood may be determined by the scale on the manometer, using the nieri cury globule as an indicator. i

Thus it will be seen that I obtain a sphygmo-manometer which is small and easy to carry; in which no water is used, and in which the cap or petcock commonly used on the outer end of the manometer is done away with. This last point is a great improvement inasmuch as it has been very diilicult in practice to keep the cap or petcock tight. Furthermore, the indicator in my device automatically takes its osition at the zero mark when in use and oes not require man- It is to be understoood that I do not wish to limit myself strictly to .the form and arrangement herein-set forth, as various alterations may be made Without departing from the spirit and scope of my invention.

What I claim 1s:

l. In a device of the character described, a manometer having a globule of mercury in its inner end, and an internal flared portion Patented J an. 4, 1910.

near its inner end for seating the globule bulb at its inner end, a globule of mercury located normally in said bulb, andan inter-- nal flared portion near its inner end;` Jfor seating the globule When the manometer is inverted into position preparatory for use.

3. In a device ofthe character described, a manometer comprising a tube having a closed outer end and a bulb at its inner end, and a globule of mercury located normally in said bulb, a flare being formed at the junction of the tube and the bulb for seating the globule of mercury When the manometer is inverted into position preparatory for use.

4. In a device of the character described, a'manometer having a closed outer end and a bulb at its innerend, a globule of mercurylocated normally in said'bulb, a hollow nipple having an inner extension withinV said bulb for preventing the escape of the globule of mercury, and an air bag connected to said nipple.

5. In a device of the character described, a manometer having a closed outer end and' a bulb at its inner end, a globule of mercury located normally in said bulb, a hollow nip; ple having an inner extension bent back upon itself within said bulb for preventing the escape of the globule of mercury, and an air bag connected to said-nipple.

, In a device of the character described, amanometer having a closedl outer end and a bulb 4at its inner end, a globule of mercury located normally in said bulb, a hollow nipple having an inner extension Within the bulbfor preventing the escape of the globule vof mercury and an outer extension exterior to sald bulb, and an air bag having a iiexible tube attached to said outer extension of the v nipple.

7; In a device of the character described, a manometer having a closed outer-.end Aand a bulb at its inner end, a globule of mercury located normally in said bulb, a hollow nipple `having an inner extension within the bulb for preventing the escape of the globule of mercury and an outer extension exterior to said bulb, and an air bag having a flexible tube removably attached tosaid outer extension of the nipple.

8. In a device of the character described,

a manometer. comprising an enlarged outer' closed end, a bulb and an interposed-tube, anv airbag in open communication with said bulb, and a globule of mercury located normally in said bulb and arranged to close the inner end of said tube when the manometer is inverted into position preparatory for use.

9. In a device of the character described, a manometer having a closed outer end and a bulb at its inner end, an air bag in open communication,Witlnsaid bulb, a globule of mercury located normally in said bulb, said manometer having'a graduated scale thereon, and said globule of mercury being a.r-. ranged to drop to the zelro mark of said scale when the manometer is inverted into position preparatory for use.

In testimony, that I claim the foregoing as my invention, I have signed my name in presence of two witnesses, this tenth day of November, 1908.

MAX vHERZ. Witnesses: ROBERT W. HEINcA-n'rNnu,

AUGUST Focene.