DE1862898U - CONTROL UNIT FOR A DEVICE FOR TAKING BOTH IN BLOOD CONSERVES. - Google Patents

Description

PA 551794 * 20.62

PATENT ADVERTISER R. STORZ BACH -STUTTGART

Telephone 66295 ^, wire address: Patent Attorney Störzbach, Stuttgart

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28 201

Medical Councilor Dr Herbert KOLB ^ Stuttgart-Sillenbuch, Silberwaldstrasse 1 C and Haeberle & Oo., Stuttgart.

/ Device 'for withdrawing blood from stored blood

Up until now it was common practice to take blood to be filled into a bottle that is already under negative pressure. The suction is here by an the water jet pump connected to the blood bottle reinforced. Since the suction depends on the strongly fluctuating water pipe pressure in a hospital, an even suction could not be achieved with the usual devices. Uncommon suction, however has major disadvantages. Too much suction causes red blood cell destruction, while too much suction No economic work permitted.

In addition, the line was shut off afterwards

blood collection and transfer to the hash simply by means of a clamp or clamping device, which is cumbersome and time consuming.

After all, there are often several lines at the same time connected to the pump. If one or the other line is then shut off, the suction increases accordingly in the remaining lines, which is often related to the one already mentioned Destruction of red blood cells leads to it.

According to the hiring, these deficiencies are eliminated by that between the water jet pump and the blood bank an adjustable vacuum regulator is switched on. This vacuum regulator contains a line to Pump j a line to the blood bank with an intermediate pressure gauge, a control valve line and a four-way valve controlling a ventilation hole.

To make operating the device as easy as possible ζ ten, the vacuum regulator is built into a box-like housing with the connection lines on the rear for the water jet pump respectively. for the blood protrude, while on the front next to the pressure gauge scale a lever for adjusting the four-way valve and arranged a handle knob for adjusting the control valve are.

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The drawing illustrates the subject, the! in one embodiment,

Pig. 1 shows a front view of a housing with the vacuum regulator.

Pig. Figure 2 is a plan view of Pig, Figure 1, whereTdei. the housing is open at the top,

Pig «3,4 u» 5 show the different operational tests speed of the four-way valve used in the vacuum regulator.

In a box-like housing 1, a pressure gauge 2 is mounted on a frame 3, which also carries the four-way valve 5 connected to the pressure gauge by a line 7. The serving for connecting the blood bag to the pressure gauge connection line 7 'and which serves to connect the water pump to the Vierweghahn lead 7 ^tf protrude through the rear wall the outside of the housing 1. The control valve 6, designed as a needle valve, protrudes into a third line leading to the four-way cock and is used to set the desired negative pressure on the manometer. At B a ventilation hole controlled by the four-way valve is indicated. The manometerskaia and the handle knob for setting the control valve 6 are arranged on the front of the housing 1, where there is also a parallel to the Pront-

plate "pivotable lever 4 is located, which adjusts the four-way valve 5 ^{via a spindle 4 r.}

Mr the four-way valve 5 are three operating positions z. B. by two lateral end stops and a middle lederrast or similar. set. These operating positions correspond to "suction", "closed" and "open". At ^s 'suction' 3 is shown in FIG. The communicating τοπ the pump via the connection line 7 ^'1' to Vierweghahn 5 and a part prepared from here via the regulator 2 to the blood bag and the other part to the 2-egelventil. 6 readable at the manometer vacuum the withdrawal is set by means of the control valve.

In the "closed" position, according to B ¹ Xg. 4 in valve 5 all lines are switched off. Is the set negative pressure being maintained in the blood reserve _? while the negative pressure is not affected on all other suction and extraction parts that may be connected to the same pump *

In the "open" position is shown in FIG. 5> the line 7.7 ^f leading to the blood bank via the pressure gauge and the line to the control valve 6 are connected through the valve 5 to the ventilation hole B, so that the negative pressure in the

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Blood bank disappears. Also in this lalle other tapping points of the same pump are not affected.

The measuring of the yakuum canned food takes place in the company test Position "closed" according to FIG. 4, the value on the manometer is shown"

The length of the adjustment lever 4 for the four-way cock becomes advantageously dimensioned so that the vacuum regulator optionally placed on the table or screwed to a work table or the wall or hung or otherwise can be accommodated.

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Claims (1)

,. (Device -, characterized in that the vacuum regulator controls a line (7 ' ¹ ) to the pump, a line (7> 7 ^f ) to the blood unit with an interposed manometer (2), a control valve line (6) and a ventilation hole (B) Four-way valve (5) contains. '. "■■ .-- \ · Torrichtung according to claim 1 characterized in that the negative pressure regulator preferably, by means of the Vierweghahn (5) and the verbundene.Manometer with it is installed (2) supporting the frame (3) in a kästchenarti "gen housing (1), to the back of which the connection lines f7 '' respectively. 7 ^r ) protrude for the pump and / or for the blood reserve, while a handle lever (4) for adjusting the four-way valve (5) and a handle knob for adjusting the control valve (6) are arranged on the front next to the pressure gauge scale. -7- ν »ty« device according to claim 1 üfei, - characterized in that that for the adjusting lever (4) of the four-way valve (5) three operating positions, e.g. B. by two lateral Ind stops and a middle spring detent or the like., Set are*