RU198317U1 - DEVICE FOR COLLECTING WATERFAN WATERS - Google Patents

Abstract

The utility model relates to medical technology, namely to disposable medical instruments for collecting biological material of amniotic fluid from the amniotic cavity during a cesarean section for microbiological, molecular biological research and genetic research. a polymeric elastic material and a piston, characterized in that the cylindrical body with a volume of 15 ml has an external thread in the distal part for connection with a hollow transparent adapter, the proximal section of which has an internal thread; on the distal part of the adapter, narrowed in the form of a cylindrical spout, a cannula of larger diameter, bent at an angle of 135 °, is put on; the blunt distal end of the cannula has a lateral opening; the distal part of the cannula is equipped with a transparent guide, which exceeds it in diameter and is bent at an angle of 135 °, with a valve above the location of the blunt end of the cannula and a pointed distal end.

Description

The utility model relates to medical equipment, namely to disposable medical instruments for collecting biological material of amniotic fluid from the amniotic cavity during cesarean section for microbiological, molecular biological research and genetic studies.

A device for producing amniotic fluid, containing a tube with a stylet, characterized in that, in order to reduce tissue trauma, the device is made in the form of a curved body with a side hole at the distal end, and inside the body there is a guide tube rigidly fixed around the perimeter of the hole, and the working part of the tube with a stylet is installed perpendicular to the body [1]. The disadvantage of this device is the presence of the stylet inside the collection tube, the need for its removal after a puncture, the high likelihood of contamination by others and the absence of a vacuum container for collecting analysis.

A device for sampling from the uterine cavity in gynecology, containing a cylindrical body, a piston and a cannula, in the distal part having a sterile gelatin tube [2]. The disadvantages of the device is the absence of a piercing surface, because it is not intended for piercing biological tissues, an unprotected cannula opening, which increases the likelihood of contamination of the material by the surrounding cells, the small diameter of the tube along which the material is taken and the small volume of the collector. This model is taken as a prototype.

The technical result of the utility model is the safe intake of amniotic fluid, including during a caesarean section. This technical result is achieved in that a 15 ml cylindrical body has an external thread in the distal part for connection with a hollow transparent adapter, the proximal part of which has an internal thread; on the distal section of the adapter, narrowed in the form of a cylindrical nose, wearing a cannula of a larger diameter, curved at an angle of 135 °; the blunt distal end of the cannula has a lateral opening; the distal part of the cannula is wearing a transparent conductor that is larger than it in diameter and bent at an angle of 135 °, having a valve above the blunt end of the cannula and a pointed distal end.

Threaded connections, the difference in the diameter of the parts of the device ensures their tight reliable connection. The capacity of a cylindrical body of 15 ml is optimal for collecting amniotic fluid for research. The bend at 135 ° of the conductor and cannula allows you to safely and conveniently start the device for the preceding part of the fetus. The pointed end of the conductor helps to easily pierce the fetal bladder, and the blunt end of the cannula prevents trauma to the anatomical formations of the fetus and uterus. The lateral location of the cannula opening prevents its obstruction with biological tissues and the contamination of the test material. All this in general contributes to the unhindered collection of amniotic fluid.

Comparison of the proposed device with others known in the field of medicine, shows its compliance with the criteria of a utility model.

A device for collecting amniotic fluid containing a cylindrical hollow body made of a polymer elastic material and a piston, characterized in that the 15 ml cylindrical body has an external thread in the distal part for connection with a hollow transparent adapter, the proximal part of which has an internal thread; on the distal section of the adapter, narrowed in the form of a cylindrical nose, wearing a cannula of a larger diameter, curved at an angle of 135 °; the blunt distal end of the cannula has a lateral opening; the distal part of the cannula is wearing a transparent conductor that is larger than it in diameter and bent at an angle of 135 °, having a valve above the blunt end of the cannula and a pointed distal end.

The utility model is illustrated by graphic material. The figure 1 shows a diagram of a device. The device for collecting amniotic fluid contains a cylindrical hollow body 1 made of polymer elastic material and a piston 2. The distal part of the body 1 has an external thread 3 for connection with a hollow transparent adapter 4, the proximal part of which has an internal thread 5. The distal part of the adapter 4 is narrowed in the form a cylindrical nose 6, on which a cannula 7 of a larger diameter is dressed, curved at an angle of 8 to 135 °. The blunt end 9 of the cannula 7 has a lateral hole 10. The transparent conductor 11, which is larger in diameter and bent at an angle of 135 °, is fitted to the distal part of the cannula 7, having a valve 12 above the location of the blunt end 9 of the cannula 7 and the pointed distal end 13.

The device is used as follows. Through the threaded connection, the cylindrical body 1 and the adapter 4 are connected. A transparent conductor 11 is put on the cannula 7 so that the blunt end 9 of the cannula 7 is located below the valve 12. The cannula 7 is put on the narrowed nose 6 of the adapter 4. The piston 2 is pulled, creating in the cylindrical body 1 and cannula 7 vacuum. During a caesarean section, after dissection of the myometrium, the fetal bladder is pierced with the pointed end 13 of conductor 11. A conductor 11 with a cannula 7 is inserted behind the precursor of the fetus, which is facilitated by their bending at an angle of 135 °. After installation in the pocket of the amniotic cavity, the conductor 11 is displaced by hand along the cannula 7 proximally so that its valve 12 opens and the blunt end 9 of the cannula with the side opening 10 is above it. Through the lateral opening 10 of the cannula 7, amniotic fluid begins to flow into the cylindrical body 1. After filling the cylindrical body 1, the cannula 7 is disconnected from the nose 6 of the adapter 4. Remove the cylindrical body 1 with amniotic fluid, and then the cannula 7 with the conductor 11.

The use of a device for collecting amniotic fluid is illustrated by a clinical example. Patient E., 38 years old, second pregnancy, the first ended in 2008 with urgent surgical delivery by cesarean section due to acute intrauterine asphyxiation of the fetus. At 39 weeks, the patient was admitted to the birth ward with a diagnosis of Pregnancy 39 weeks. Scar on the uterus after cesarean section. Premature discharge of amniotic fluid, for which delivery by cesarean section is indicated, for analysis, there was a need to collect amniotic fluid, for which our device was used. Intraoperatively, there were no problems with the intake of amniotic fluid, the puncture of the fetal bladder was performed without injuries and complications, the amniotic fluid was taken for examination.

A device for collecting amniotic fluid can be recommended for the collection of amniotic fluid for performing microbiological and molecular genetic studies in an obstetric hospital.

Sources of information

1. Patent SU 1066584 A device for producing amniotic fluid. IPC A61B 17/34. Priority 1982.03.31.

2. Patent RU 62523 dated October 13, 2006 U1 “Paypel” IPC A61M 1/00 (2006.01).

Claims (1)

A device for collecting amniotic fluid containing a cylindrical hollow body made of a polymer elastic material and a piston, characterized in that the 15 ml cylindrical body has an external thread in the distal part for connection with a hollow transparent adapter, the proximal part of which has an internal thread; on the distal section of the adapter, narrowed in the form of a cylindrical nose, wearing a cannula of a larger diameter, curved at an angle of 135 °; the blunt distal end of the cannula has a lateral opening; the distal part of the cannula is wearing a transparent conductor that is larger than it in diameter and bent at an angle of 135 °, having a valve above the blunt end of the cannula and a pointed distal end.

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