SU1301410A1 - Apparatus for collecting blood from operation wound for reinfusion - Google Patents

Abstract

This invention relates to a medical technique. The purpose of the invention is to prevent the freezing of free blood concentration of hemoglobin. The container 1 for the solution is connected by a tube 2 containing a screw clamp 3 with a metal tube 4. At the working end of the tube 4 a nozzle 5 is fixed, made in the form of a bucket. A replaceable tube 6 is fixed along the tube 4 for aspiration, with a gap between the middle part of the bottom of the bucket and the end of the tube. The tube 6 is provided with a spring clip 7 having a handle 8 and a spring 9 with a stopper 10. The tube 6 is connected to a container 11 for preservative and blood. The negative pressure in the vessel is created by the source 12 of vacuum. 1 ill., 1 tab. / (L co about 4

Description

The invention relates to medicine, namely to transfusiology.

The purpose of the invention is to prevent an increase in the concentration of free hemoglobin of collected blood by preventing air leaks.

The drawing shows a device for collecting blood from the surgical wound for reinfusion.

The solution tank 1 is connected by a polyvinyl chloride tube 2 from a single use system for blood transfusion, containing a screw clamp 3, with a metal tube 4 for supplying the solution. At the working end of the last fixed metal, coated with anti-fomosilane tip 5, made in the form of a bucket. A PVC replacement tube 6 is fixed along the tube 4 for aspiration, with a gap between the middle part of the bottom of the bucket and the end of the tube, which is predominantly half the internal diameter of the tube 6 for aspiration. The latter is provided with a spring clamp 7 having a handle 8 and a spring 9 with a stop 10. The suction tube 6 is connected to a container 11 for a preservative and blood, in which a negative pressure is created by the source 12 of vacuum.

The collection of blood from the surgical wound for reinfusion is carried out as follows.

After processing the operative field and limiting it with sterile laundry, the operating nurse transfers the working part of the device to the surgeon's assistant, and the continuing communications to the personnel for final installation of the device: connecting the solution tank 1, the preservative tank 11 and blood, and the vacuum source 12.

After completion of the transaction. The cavity, from which blood is to be collected for reinfusion, is washed two or three times with warm isotonic sodium chloride solution. During the operation, the wound is periodically irrigated with a small amount (20-30 ml) of the diluting solution from tank 1: isotonic sodium chloride solution, reopolyglucine, etc., with the addition of heparin in a dose of 500 units. on 1 l.

Prior to the collection of blood, a constant discharge is created in the tank 11 for the preservative and blood. At the same time, the lumen of the tube b is opened for aspiration 1/3 by moving the handle 8 of the clamp 7 by the stop 10 of the spring 9, and by moving the screw of the clamp 3 the volumetric flow rate of the solution through the tube 4 from the tank 1 is set, ensuring that the tip 5 is continuously filled aspiration - I working mode.

During blood collection, the tip-bucket 5 is immersed in a wound filled with blood. Clearance tube b for aspiration completely

open, pressing the handle 8 of the clip 7 to its body. The position of the clamp 3 and the volumetric velocity of the solution through the tube 4 do not change - II operating mode.

In operation mode II, blood collection is continued until the total volume of blood in the wound is able to fill the scab. It is then switched to operating mode I, completing the collection of blood by washing the tube b for aspiration with a dilution solution. As a result, the blood collected in the container 11 has a dilution of about 1: 1.

The collection of blood from the surgical wound for reinfusion by the device was carried out with brushing operations. In two cases, a complete blood collection was carried out once, four times: in two steps. At the same time, 200-7500 ml of autologous blood was collected and reinfused.

The table shows data on the percentage increase in the concentration of free hemoQ globin in the blood collected for reinfusion compared with the blood that has been poured into the surgical wound, when performing blood collection using the known and using the proposed device. The values of free hemoglobin concentration at calculation 5 to eliminate the effect of blood dilution resulted in a single hematocrit value.

From the presented data it is clear that when collecting blood using a known device, the concentration of free hemoglobin

0 in blood collected for reinfusion four times lower than in blood that was poured into the surgical wound (, 05).

35

The increase in the concentration of free hemoglobin,%

Known device

The proposed device

five

0

+ 512 +320 +473 +330 +498 +450 +430.5 (320-512)

+ 10

-five

+ 7

+4

-2

+ 12

+4.3 (-5 + 12)

55

The concentration of free hemoglobin in the blood collected by the proposed device did not differ from that of

in the blood that was poured into the surgical wound, its changes were within the fluctuations of the error of the accuracy of the determination method, which indicated that there was no trauma to the erythrocytes of aspirated blood under conditions of their leakage.

Example. Ill L. Diagnosis: alveococcosis of the liver. Surgery: resection with a piece of the right lobe of the liver. During the operation, from the surgical wound using the proposed device, it was collected in four doses, and then reinfused with 750 ml of auto-blood. The concentration of free hemoglobin in the blood that has poured into the surgical wound, 0.76 g / l, in the collected and reinfused blood, diluted twice during the collection, 0.395 g / l. After the hematocrit is brought to a single value, the increase in free hemoglobin concentration is 4%, i.e. the concentration of free hemoglobin was practically unchanged, which indicated that there was no trauma to the red blood cells.

Thus, the implementation of the collection of blood from the surgical wound with the help of the proposed device, which excludes air leakage into the aspiration tube, allows blood to be drained into the wound.

without traumatic damage to it and get a full autohemo transfusion medium for the patient. The presence of autologous blood reduces the consumption of donor blood, which is beneficial not only economically, but also clinically, since the risk of transmission of infections and the development of homologous blood syndrome during operations with massive and supermassive blood loss is reduced.

Claims (1)

Invention Formula A device for collecting blood from the surgical wound for reinfusion, containing a container for the solution, a tube with a clamp for feeding the solution, a tube with a clamp for aspiration, capacity for preservative and blood and a source of vacuum, characterized in that, in order to prevent an increase in the concentration of free hemoglobin of collected blood by preventing air leaks, it is provided with a tip made in the form of a bucket and fixed on the working end of the solution supply tube, aspiration is fixed above the middle part of the bucket with a gap between the end of the tube and the bottom of the bucket equal to half the internal diameter of the tube for aspiration.