JPS6324699B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is a medical body fluid evacuation device, particularly a device for discharging fluid and air from a body cavity such as the chest, measuring the amount of body fluid discharged, and collecting the fluid. The present invention relates to a body fluid evacuation device.

[Prior art]

In general, devices for spontaneous drainage or suction drainage after thoracotomy include the one-bottle method with only a fluid collection part, the two-bottle method with a combination of fluid collection part and water seal part, and the two-bottle method with a combination of fluid collection part, water seal part, and A three-bottle method in which a pressure regulating section is combined is conventionally known. However, all of these were primarily intended only for drainage and liquid collection. Furthermore, the commonly used two-bottle method is mainly applied to the natural drainage method.

The body fluid drainage device of the present invention has two features from the form of the device.
Although it belongs to the bottle method and is mainly used for natural drainage, it differs from conventional methods in terms of device configuration, function, and operation. In other words, by having a mechanism that precisely measures the amount of body fluid drained every unit time after thoracotomy, it becomes easier to judge whether or not to restart the chest and the degree of recovery, etc., and enables more detailed postoperative management. This is a novel body fluid evacuation device, the basic structure of which has already been disclosed in Japanese Patent Application No. 197652/1983. However, this device is mainly used for the natural drainage method and does not have a function to maintain a constant negative pressure inside the container, so its applications are limited.

[Purpose of the invention]

Furthermore, the present invention has a structure in which the liquid collection part itself has elasticity and flexibility and has a pumping action in conjunction with breathing movement, so that the liquid can be drained under a constant negative pressure. To provide a body fluid draining device which is suitable for draining fluid after total removal of one lung due to lung cancer, empyema, etc., which can reduce the burden on respiratory movements, effectively perform post-operative healing and drainage. The purpose is to

[Structure of the invention]

That is, the present invention comprises a hard hollow container and a soft bag-like container made of plastic, and the hollow container has a body fluid collection part having a body fluid inlet at the upper part, and an opening/closing mechanism at the upper end of the liquid collection part. The pressure control part has a suction port for connection to a suction device at the upper part, and a built-in thin tube opened to the atmosphere at the upper part,
Sealed water is put inside it, and the lower part of the liquid collecting part is tapered and has a scale for measuring the amount of liquid drained, and the upper part of the liquid collecting part has a flat shape. It has a pumpable structure in which the side wall is depressed by slight negative pressure and restored by its own elasticity, and it communicates with the soft bag-like container that stores body fluid after measurement through an opening/closing mechanism. The present invention relates to a medical body fluid evacuation device characterized by the following.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A medical body fluid evacuation device according to an embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a schematic diagram of an apparatus that is an embodiment of the present invention. The hard hollow plastic container 1 is
It consists of a liquid collection section 2 and a pressure control section 3, and the liquid collection section 2 has a body fluid inlet 4 at its upper part, to which a body fluid introduction tube 5 is connected. It is in gas communication with the pressure control section 3 via an opening/closing mechanism 6 near the upper end. The liquid collection part 2 has a structure that is tapered at the lower part and marked with a scale so that relatively small amounts of body fluid can be accurately measured. Although the capacity of the liquid collecting section 2 is not particularly specified, it is preferably 350 c.c. or less from the viewpoint of accurately measuring the amount of body fluid discharged after surgery. Also, as can be seen from Figures 1 and 2,
The upper part of the liquid collecting part 2 has a flat shape, and its side wall dents due to slight negative pressure in conjunction with breathing movement, and then returns to its original position with its own elastic force, creating a pumping action by the return movement. It consists of the following structure, container wall thickness, and material. By having such a function, the inventors found that in clinical cases such as drainage after total pneumonectomy, (a) the capacity of the fluid collector is relatively small, and if it is kept at about 300 c.c., the respiratory movement can be reduced. The weight itself is low, reducing the burden on the thoracic cavity.

(b) The pumping action of the fluid collector in conjunction with respiratory movements allows fluid to be drained under a constant negative pressure, allowing for smooth drainage of body fluids without increasing the burden of respiratory movements. Due to the effect of
There have been cases where the amount of body fluid drained from the wound decreases quickly, there is little residual fluid, and the postoperative recovery is quick.

Next, the pressure control section 3 has a built-in thin tube 8 which is opened to the atmosphere at the upper part, and sealing water is introduced into the inside to form a water sealing chamber 7. It has a communication port 9 that communicates with the air flow via an opening/closing mechanism 6, and a suction port 11 for connecting with a suction pump 10. Sterile water is poured into the water-sealing chamber 7 to a certain height and maintained at a certain negative pressure h. As an example of use, first open the opening/closing mechanism 6 under this constant negative pressure suction to maintain the system from the fluid collector 2 to the body cavity under a constant negative pressure, and then close the opening/closing mechanism 6 to maintain the system under a constant negative pressure. Natural drainage is performed as a closed system under pressure. Furthermore, after a certain period of time has elapsed, by opening the opening/closing mechanism 6, if the system pressure is higher than the set pressure, the excess pressure will be sucked out, and if the negative pressure has become stronger, air will be pumped in. It functions to balance the pressure within the thoracic cavity.

The liquid collection section 2 and the pressure control section 3 may be an integrated container and separated internally, or may be separate containers and connected by a connecting pipe or the like. Furthermore, there is no problem in using the liquid collecting section 2 by connecting it to another pressure regulating suction device.

Further, the lower part of the liquid collecting part 2 communicates with the upper part of the bag-like container 12 via an opening/closing mechanism 13, and the liquid collecting part 2
After measuring the amount of body fluid discharged per hour, the opening/closing mechanism 13 is opened to allow the body fluid to fall into the bag-like container 12 and stored therein. There is no problem even if the bag-shaped container 12 has a discharge mechanism 14 for discharging the stored body fluid. Further, the arrangement of the liquid collection part 2 and the bag-like container 12 does not necessarily have to be vertically in series as in the example shown in the drawings, but may be in parallel. In addition, the bag-like container 12
Although it is not necessarily bag-like and may be bottle-like, it is appropriate to use a bag-like shape as shown in the drawings from the viewpoints of structure, ease of handling, overall size, etc.

〔Effect of the invention〕

As described above, the body fluid drainage device of the present invention has a structure that can accurately measure a relatively small amount of body fluid discharged per hour, and enables more detailed treatment in terms of postoperative management and operation. In addition, since the volume of the fluid collecting part is relatively small and it communicates directly with the body cavity, the overall volume does not increase unnecessarily, the burden of respiratory movements is small, the mediastinum is stable, and healing is quick.
The pumping action in conjunction with the breathing of the fluid collection part allows fluid to be drained under a constant negative pressure, resulting in smooth drainage and little residual fluid, which can contribute to early recovery after surgery. The present invention provides a simple and novel body fluid evacuation device.

[Brief explanation of drawings]

The figure shows an embodiment of a medical body fluid evacuation device according to the present invention. Fig. 1 is a schematic diagram of the device used clinically, and Fig. 2 is a schematic diagram of the liquid collection part and the side of the bag-like container. indicates a time when the liquid collection part returns to its original state due to elastic force and discharge of body fluid is promoted. In the figure, 1 is a plastic container, 2 is a liquid collection part,
3 is a pressure control unit, 4 is a body fluid inlet, 5 is a body fluid introduction tube, 6 is an opening/closing mechanism, 7 is a water seal chamber, 8 is a thin tube,
9 is a communication port, 10 is a pump, 11 is a suction port, 12
is a bag-like container, 13 is an opening/closing mechanism, 14 is a discharge mechanism...
...is...

Claims (1)

[Claims] 1 Consists of a hard hollow container and a soft bag-like container made of plastic, the hollow container has a body fluid collection part with a body fluid inlet at the top, and a gas flow through an opening/closing mechanism at the upper end of the liquid collection part. The pressure control unit has a suction port at the top for connection to a suction device, and a thin tube opened to the atmosphere at the top, with a sealed inside. A water stop is installed, and the lower part of the liquid collecting part is tapered and has a scale for measuring the amount of liquid drained.The upper part of the liquid collecting part has a flat shape, and its side wall is It has a pumpable structure that dents under slight negative pressure and restores itself with its own elasticity, and is characterized by being in communication with a soft bag-like container that stores body fluid after measurement through an opening/closing mechanism. , a medical body fluid drainage device for use in chest drainage.