JP2021074270A - Medical biological fluid switching cock, intubation tube using the same, phlegm and saliva suction device, and biological fluid suction device - Google Patents

Abstract

To provide an inexpensive system and an inexpensive method capable of easily and safely (hygienically) switching all of a case where saliva is sucked together with phlegm, a case where mainly phlegm is sucked, and a case where mainly saliva is sucked by one system in sucking biological fluid such as phlegm in the trachea of a patient using an artificial respirator.SOLUTION: A medical biological fluid switching cock switches a flow state of different kinds of biological fluid from two input terminals to one output terminal. There are three switching patterns: a first pattern creates a state in which a small amount of biological fluid flows from both of the two input terminals to the output terminal; a second pattern creates a state in which the biological fluid mainly flows from one of the two input terminals to the output terminal; and a third pattern creates a state in which the biological fluid flows from the other of the two input terminals to the output terminal. A switching lever is provided for switching the switching patterns.SELECTED DRAWING: Figure 13

Description

The present invention is a medical biofluid switching cock that switches the flow state when sucking different kinds of biofluids, and a biofluid suction device using the intubation tube (tracheal tube) that sucks the intratracheal biofluids of a respiratory disorder patient in particular. It relates to a sputum saliva suction device using the incision tube), a sputum saliva suction device using the incision tube, and a method of sucking sputum and saliva.

As a method of sucking biological fluid such as sputum in the trachea of a patient using a respirator, a method of manual suction has been conventionally known. However, the general manual suction method puts a heavy burden on the caregiver, and there are reports of medical accidents due to individual differences in the skills of the caregiver (a man in his 70s who misplaced the tan suction device died, Mainichi Shimbun 2018 June 19, 2014).
There is a continuous suction system that can automatically and continuously suck for manual suction. For example, Patent Document 1 and Patent Document 2 are known. These techniques reduce the burden of the manual suction method by detecting the timing of sputum suction with a sensor or the like and intermittently automatically sucking sputum at a predetermined timing.
In addition to sputum, saliva suction is also an important treatment for patients using a respirator, which is a heavy burden as well as sputum. Saliva aspiration is treated on average three times a day separately from sputum aspiration, especially as oral care and prevention of the onset of ventilator-related pneumonia.

An intubation tube that is inserted into the patient's trachea is used for sputum and saliva aspiration. FIG. 14 is a commonly used intubation tube, which is inserted from the patient's mouth to the airway as shown in the figure, and has a sputum suction line from a small diameter near the tip of the intubation tube and the upper part of the cuff (the inflatable tube is inflated and fixed to the airway). It is equipped with a saliva suction line from a small diameter in the vicinity. The sputum suction line and the saliva suction line are connected to a suction device (including a suction pump) and sucked at the time of sputum suction or saliva suction by a connecting terminal from the patient's mouth to the outside. On the patient side of the intubation tube body, a Y-shaped Y piece connects the ventilator to the exhalation and inspiration lines.
When sucking saliva and sputum, each suction line is replaced with a negative pressure source, but there is a risk of infection with biological fluids during the replacement work, and there is work with disposable gloves to prevent this.

JP-A-2007-117273 Japanese Unexamined Patent Publication No. 09-108354

The above-mentioned method of continuously sucking sputum has some problems. That is, the patent document is a dedicated system as a medical device, the suction line as an infrastructure in the hospital cannot be used, and it is expensive because it is a dedicated product.
In addition, sputum aspiration varies depending on the patient's condition, and it may not be possible to deal with it by aspiration treatment at regular intervals. That is, although the time for performing oral care (saliva suction) is determined by the patient, there are cases where the timing of oral care and the sputum suction operation must be in the same time zone. Usually, in such a case, in order to give priority to life support, sputum aspiration is often performed first, and oral care is often performed after the treatment is completed. Since all of them are complicated operations, there is a problem that they cannot be performed at the same time by the conventional method.
In addition, as described above, when sputum or saliva is sucked into the intubation tube, there is a risk of infection due to contact with biological fluid during the work of connecting each line to the suction line.
Therefore, the case of sucking saliva at the same time as sputum, the case of mainly sucking sputum, and the case of mainly sucking saliva can be easily and safely (sanitarily) switched with one system, and it is inexpensive. A system and a method were required.

In order to solve such a problem, the present invention has a case where sputum suction line and saliva suction line of an intubation tube are input ends and sputum and saliva are automatically continuously sucked, and mainly sputum or saliva is sucked. We have found a switching cock that can switch between the case and the case, and have reached the present invention. It was also found that this switching cock can be applied to the sputum suction line of the intubation tube, the input end other than the saliva suction line, that is, the suction of other different kinds of biological fluids.
That is, the medical biofluid switching cock according to claim 1 is a medical biofluid switching cock that switches the flow state of different kinds of biofluids from two input ends to one output end, and there are three switching patterns. The first pattern is a state in which a small amount flows from both of the two input ends to the output end, and the second pattern is a state in which a small amount flows mainly from one end of the two input ends to the output end. The pattern 3 is characterized in that it mainly flows from the other end of the two input ends to the output end, and is provided with a switching lever for switching between the switching patterns.

Further, in the medical biofluid switching cock according to claim 2, the biofluid is continuously sucked from the two input ends to the one output end, and of the two input ends in the second pattern. The flow rate at one end is larger than the flow rate at one end in the first pattern, and the flow rate at the other end of the two input ends in the second pattern is the flow rate at the other end in the first pattern. The flow rate at the other end of the two input ends in the third pattern is equal to or zero than the flow rate at the end, and is larger than the flow rate at the other end in the first pattern. The flow rate of one end of the two input ends in the third pattern is equal to or zero with the flow rate of the one end in the first pattern.

Further, the medical biofluid switching cock according to claim 3 is a medical biofluid switching cock that switches the flow state of different kinds of biofluids from two input ends to two output ends, and there are three switching patterns. The first pattern is in a state of flowing from both of the two input ends to the output end, and the second pattern is in a state of flowing mainly from one end of the two input ends to the output end. The pattern is characterized in that it mainly flows from the other end of the two input ends to the output end, and includes a switching lever for switching between the switching patterns.

The medical biofluid switching cock according to claim 4 is characterized in that the first output end of the two output ends intermittently outputs and the second output end continuously outputs.
Further, the medical biofluid switching cock according to claim 5 is a wide and narrow gap formed by the shape of the notch provided by the switching lever at the opening of the flow path from the input end to the output end. It is characterized by adjusting the flow rate or the flow path.
Further, in the medical biofluid switching cock according to claim 6, one end of the two input ends is a biological fluid mainly composed of sputum from the patient's body, and the other end is mainly composed of saliva from the patient's body. It is characterized by being a biofluid.

Further, in the medical biofluid switching cock according to claim 7, the second pattern is for when a large amount of sputum is clogged, and the third pattern is for sucking saliva in oral care. It is characterized by the pattern of.
The intubation tube according to claim 8 is characterized in that one end of the two input ends of the medical biofluid switching cock is connected to the sputum suction line and the other end is connected to the saliva suction line.
The sputum saliva suction device according to claim 9 is provided with an intubation tube, and the output end of the medical biofluid switching cock is connected to a negative pressure source.

The biofluid suction device according to claim 10 is characterized by using a medical biofluid switching cock.
Further, in the method for sucking sputum and saliva having three patterns of suction patterns using the medical biofluid switching cock according to claim 11, the first pattern is a pattern for sucking sputum and saliva, and the second pattern. Is a pattern in which sputum is mainly continuously sucked, and a third pattern is a pattern in which saliva is mainly continuously sucked, usually sucked in the first pattern, and the second pattern is sucked at a predetermined timing. Alternatively, it is characterized in that it switches to the third pattern, and after switching, after each suction pattern is completed, it returns to the first pattern by switching and repeats the switching.

According to the medical biofluid switching cock of the present invention, for example, sputum and saliva of a patient using an artificial respirator can be automatically and continuously sucked, and at the same time, sputum is mainly sucked by the same system (for example). , When a large amount of sputum is clogged in the trachea), or mainly by operating the switching cock according to saliva suction (for example, when saliva suction is required for oral care of the patient), sputum accumulated in the patient's body Alternatively, saliva can be sucked.
In the automatic continuous suction, for example, the sputum suction timing can be performed when the sputum is generated by detecting the exhaled breath with a flow sensor, and the sputum can be sucked at the timing when the sputum reaches the tip of the intubation tube. However, it does not have to be limited to this method.

Further, according to the intubation tube of the present invention, one end of the two input ends of the medical biofluid switching cock of the present invention is connected to the sputum suction line of the intubation tube, and the other end is connected to the saliva suction line of the infusion tube. When continuous continuous suction of sputum and saliva is possible with one intubation tube (first pan), mainly sputum suction (second pattern), or mainly saliva suction (third) If a pattern) is required, it can be switched as needed.
Furthermore, since the conventional individual line replacement work does not occur, there is no risk of infection during the work.

Further, according to the sputum saliva suction device of the present invention, by connecting the output end of the intubation tube of the present invention to a negative pressure source installed in the hospital, the above three patterns of suction can be performed only by using standard hospital equipment. It will be possible. Therefore, an expensive dedicated sputum saliva suction device is not required, which is advantageous in terms of operating cost. In addition, the human cost is also shortened in working time and improved in work safety as compared with the conventional method.
Further, according to the method for sucking sputum and saliva of the present invention, the above-mentioned three patterns of suction can be easily, safely, continuously and continuously performed by the intubation tube using the medical biofluid switching cock of the present invention. Allows suction of sputum and saliva.

An overall perspective view (a) of the medical biological fluid switching cock of the present invention and a view (b) with the switching lever removed. An overall perspective view (a) of another medical biological fluid switching cock of the present invention and a view (b) with the switching lever removed. The figure for demonstrating the 1st pattern of the 1-output switching cock. The figure for demonstrating the 2nd pattern of the 1-output switching cock. The figure for demonstrating the 3rd pattern of the 1-output switching cock. The figure for demonstrating the 1st pattern of 2 output switching cocks. The figure for demonstrating the 2nd pattern of the 2 output switching cock. The figure for demonstrating the 3rd pattern of the 2 output switching cock. The figure which connected the medical body fluid switching cock of this invention to an intubation tube. FIG. 9 is a diagram using a patient. A sputum saliva suction device using the medical biofluid switching cock of the present invention. The figure which uses the medical biofluid switching cock of the present invention for aspiration of a thoracic cavity leak fluid and an abdominal cavity leak fluid. The flow chart at the time of using the medical body fluid switching cock of this invention. Diagram of a conventional intubation tube.

The different types of biofluids that can be handled by the medical biofluid switching cock of the present invention are not particularly limited, but sputum and saliva will be mainly described below.
The medical biofluid switching cock of the present invention will be described with reference to the drawings. The input terminal of the medical biofluid switching cock has two inputs, one end and the other end, but the output end has one output of only one end, a first output end, and a second output end. May be output.

1) In the case of a 1-output switching cock The medical biofluid switching cock 10 in the case of 1 output is shown in FIGS. 1 (a) and 1 (b). FIG. 1A is an overall perspective view showing an input end 1, an input end 2, an output end 3, and a switching lever 4. FIG. 1B is a diagram showing a state in which the switching lever 4 is removed. The switching lever 4 has a notch portion 5. In the switching cock body, the notch 5 is inserted into the opening 6, and the flow state of the biological fluid from the input end to the output end is the shape of the notch and the gap (gap) of the flow path is wide in the opening. / Narrow (flow path resistance) can be changed. That is, the flow rate of the biological fluid can be controlled by operating the switching lever 4.

The material of the switching cock is resin, and any material that is easy to process may be used, but it is a material suitable as a material for medical instruments. For example, ABS resin is suitable. Manufacture is, but is not limited to, injection molded.
In the case of one output, for example, the input end 1 and the input end 2 are connected to the sputum suction line and the saliva suction line of the intubation tube, and the output end 3 is continuously sucked by the pressure from the negative pressure source to suck the suctioned material. It is connected to a storage box or the like for storing. The saliva suction line may be referred to as a cuff upper suction line from the suction point of the intubation tube. The connection state is shown in FIG. 9 (described later).

As the negative pressure source, for example, a negative pressure infrastructure from an indoor wall provided in the hospital can be used. In the negative pressure infrastructure, the pressure defined by the standard is stable and continuously provides negative pressure. Therefore, the use of negative pressure infrastructure does not require new equipment or dedicated equipment, which is advantageous in terms of cost.
The medical biofluid switching cock has three patterns of flow from the input end to the output end as switching patterns. By changing the position of the switching lever 4 in FIG. 1B, the three switching patterns can be freely changed. Each pattern will be described below. The switching of the switching lever will be described by manual operation by a caregiver or the like, but it does not exclude automatic switching after the switching timing is automatically sensed by a timer or a sensor.

(First pattern)
In the first pattern, the sputum suction line and saliva suction line from the intubation tube are connected to the input end, and sputum and saliva are sucked to the output end. The switching lever 4 at this time is in a flat and horizontal position. FIG. 3 shows the shape of the notch 5 in the opening 6 inside the switching cock. As shown in FIG. 9, a sputum suction line 8 is connected to the input end 1, a saliva suction line 9 is connected to the input end 2, and the output end 3 is connected to a negative pressure source, for example, a vacuum pump. , Saliva storage box, various sensors, etc. are connected.
Then, as shown in FIG. 3, the notch portion 5 has a slight gap with respect to the flow path from both the input end 1 and the input end 2 to the output end 3. In the first pattern, the slight gap in the notch 5 has an important meaning. That is, a small amount of sputum and saliva are slowly and continuously sucked from the output end to the storage box from the sputum suction line connected to the input end 1 and the saliva suction line connected to the input end 2, respectively. It will be.

In the first pattern, sputum and saliva, which are different types of biological fluids, can be gradually sucked at the same time by the notch shape of the switching cock of 2 inputs and 1 output. Sputum and saliva are naturally accumulated in the patient's body little by little over time, and both of these accumulated contents can be continuously and constantly aspirated and removed. Usually, maintaining the first pattern facilitates the monitoring work of sputum and saliva suction.
By gradually sucking sputum in a small amount in the first pattern and the third pattern, the same effect as the manual intermittent suction of the method is obtained. As a result, it is possible to relieve the labor of the sputum suction work by the caregiver or the like.

(Second pattern)
In the second pattern, the sputum suction line 8 and the saliva suction line 9 from the intubation tube are connected to the input end 1 and the input end 2 as in the first pattern. The state of the switching cock at this time is shown in FIG. The position of the switching lever is rotating as shown in FIG. As a result, the shape of the notch portion changes as shown in FIG.
The gap between the gaps in the flow path on the input end 1 side is wide, and the gap between the gaps in the flow path on the input end 2 side remains narrow. As a result, sputum from the sputum suction line connected to the input end 1 mainly flows, and saliva from the saliva suction line connected to the input end 2 does not flow relatively as compared with sputum. At this time, the flow rate of saliva may be the same as that of the first pattern, or may not flow. Both are possible depending on the shape of the notch portion 5. In any case, it is important that the gap on the input end 1 side is relatively wide. Therefore, when it is mainly necessary to suck sputum, if the switching lever is set to the second pattern, sputum is continuously and automatically sucked during the setting.

(Third pattern)
In the third pattern, as in the first pattern, the sputum suction line 8 and the saliva suction line 9 from the intubation tube are connected to the input end 1 and the input end 2. The state of the switching cock at this time is shown in FIG. The position of the switching lever is rotating as shown in FIG. As a result, the shape of the notch portion changes as shown in FIG.
The gap in the gap of the flow path on the input end 1 side is narrow, and the gap in the gap of the flow path on the input end 2 side is wide. As a result, saliva from the saliva suction line connected to the input terminal 2 mainly flows, and sputum from the sputum suction line connected to the input terminal 1 does not flow relatively as compared with saliva. At this time, the flow rate of sputum may be the same as that of the first pattern, or may not flow. Both are possible depending on the shape of the notch portion 5. In any case, it is important that the gap on the input end 2 side is relatively wide. Therefore, when saliva suction is mainly required, if the switching lever is set to the third pattern, saliva is continuously and automatically sucked during the setting.
The solid line arrows in the switching cocks of FIGS. 3 to 5 indicate the flow paths of sputum and saliva, and when there are two solid line arrows, it indicates that the flow rate is relatively large. It can be seen that both sputum and saliva are constantly aspirated at the same time in both patterns. As a result, sputum, saliva suction work, and normal monitoring work of caregivers and the like become extremely easy.

2) In the case of a two-output switching cock Next, an overall perspective view of the medical biofluid switching cock 10a in the case of two output ends is shown in FIGS. 2 (a) and 2 (b). Similar to FIG. 1, it has an input end 1, an input end 2, an output end 3a, an output end 3b, a switching lever 4, a notch portion 5, and an opening 6. The switching lever 4 has a notch portion 5. In the switching cock body, the notch 5 is inserted into the opening 6, and the flow state of the biological fluid from the input end to the output end is in the shape of a notch in the opening, and the gap (gap) of the flow path is wide / It is possible to change the narrowness. That is, the flow rate and flow path of the biological fluid can be controlled by operating the switching lever 4.

Similarly, for example, the input end of the two outputs is connected to the sputum suction line and the saliva suction line of the intubation tube, and the output end is connected to a storage box or the like for accommodating the suctioned material by the pressure from the negative pressure source.
In the case of 2 outputs, the output mode is different from that of 1 output. In the case of 1 output, the output end 3 is continuously sucked, but in the case of 2 outputs, the output end 3a (first output end) outputs intermittently, and the output end 3b (second output end) is output. ) Is output continuously.

The output end 3a sucks sputum from a sputum suction line connected to the input end 1, but there is an intermittent means for intermittent suction between the output end 3a and the storage box (not shown). Is provided. The intermittent means has a means for blocking / releasing the flow of the sputum suction line and a timing means, shuts off the flow of the sputum suction line at a predetermined time or an interval, and releases the flow after a predetermined time. Can be done. During the intermittent period, the patient does not inhale large amounts of air. This makes it possible to ensure the patient's breathing.

The output end 3b is continuous suction instead of intermittent suction. The output end 3b is directly and continuously sucked saliva into the storage box by a saliva suction line connected to the input end 2. The tip of the saliva suction line is connected to the small diameter of the upper part of the cuff of the intubation tube (see FIG. 14) and does not affect the patient's breathing, so that continuous suction is possible instead of intermittent suction.
In the case of two outputs, since there are both intermittent suction and continuous suction modes, it is preferable to use a dedicated suction device provided with intermittent means.
And, as in the case of one output, there are three switching patterns. Each pattern will be described below.

(First pattern)
In the first pattern, the position of the switching lever is a flat position as shown in FIG. 6, and the flow path on the input end 1 side is wide and the flow path on the input end 2 side is narrow in the gap due to the shape of the notch. .. Although the flow path on the input end 2 side is narrow, it does not flow and a small amount of flow is sucked. The flow path from the input end 1 flows to the output end 3a, and the output end 3a is intermittently sucked. In the intermittent suction, the intermittent suction is performed by the above-mentioned intermittent means, but since the flow path resistance due to the gap portion is small, the intermittent suction can be smoothly performed. The flow path from the input end 2 flows to the output end 3b, and the output end 3b is continuously sucked.
Normally, the first pattern is maintained.

(Second pattern)
In the second pattern, the position of the switching lever is rotating as shown in FIG. As for the shape of the notched portion, as shown in FIG. 7, a wide gap portion is formed in the flow path from the input end 1 side up to the output end 3b. A narrow gap is formed in the flow path from the input end 2 side.
As a result, when the sputum suction line 8 is connected to the input end 1 and the saliva suction line 9 is connected to the input end 2, the output end 3a is intermittently sucked and the output end 3b is continuous suction. Due to the shape of the notch, sputum flows through a wide flow path in the gap, and is not sucked intermittently at the output end 3a, but is continuously sucked at the output end 3b. A small amount of saliva from the input end 2 is sucked from the output end 3b.
As described above, in the second pattern, normally (first pattern), sputum suction is intermittent suction, but when a large amount of sputum is accumulated in the body, intermittent suction is changed to continuous suction. A large amount of sputum can be sucked by changing the flow path according to the shape.

(Third pattern)
In the third pattern, the position of the switching lever is rotating as shown in FIG. As for the shape of the notch portion, as shown in FIG. 8, a wide gap portion is formed in the flow path from the input end 1 side up to the output end 3a. A wide gap is formed up to the output end 3b in the flow path from the input end 2 side.
Sputum removal from the input end 1 is intermittently sucked, and saliva removal from the input end 2 is sucked in a large amount by continuous suction from the output end 3b because the gap is wide and there is no resistance.
As described above, in the medical biofluid switching cock of the present invention, the flow path resistance due to the gap portion of the notch portion is changed by operating the switching lever, and in the first pattern, sputum suction is intermittently sucked by the intermittent means. On the other hand, a small amount of saliva is also sucked. In the second pattern, sputum aspiration is mainly continuously aspirated, while a small amount of saliva is also aspirated. In the third pattern, saliva suction is mainly continuously sucked, while sputum suction is intermittently sucked by intermittent means.

That is, sputum aspiration can be maintained intermittently in the first pattern and the third pattern, and can be continuously aspirated in the second pattern when stored. Therefore, since intermittent suction can be maintained at all times, the patient's breathing can be ensured. Saliva suction can be continuously sucked in small amounts in the first pattern and the second pattern to prevent storage in the body, and when stored, a large amount can be sucked in the third pattern. Therefore, normal monitoring and suction work of saliva suction becomes easy.
The solid line arrow in the switching cock of FIGS. 6 to 8 indicates continuous suction, the broken line arrow indicates intermittent suction, indicates the flow path of sputum and saliva, and when there are two arrows, it indicates that the flow rate is relatively large. .. In any pattern, it can be seen that sputum and saliva are constantly aspirated at the same time.

Further, the flow path resistance of the gap portion of the notch portion can be adjusted according to the situation of the patient to be used. For example, for a patient who has a larger amount of sputum aspiration than usual, the switching lever may be changed to a switching lever having a wide gap in the second pattern. As shown in FIGS. 1 (b) and 2 (b), a large number of switching levers prepared can be selected and changed according to the situation of each patient.
As described above, by carrying out the first, second, and third patterns with one switching cock, sputum suction and saliva suction can be easily and efficiently performed.

Hereinafter, an example using the above-mentioned medical biofluid switching cock will be shown.
(First Example)
Here, an example in which the medical biofluid switching cock of the present invention is connected to the intubation tube will be described. A diagram of the connected state is shown in FIG. The sputum suction line (intubation tube tip suction line) 8 and saliva suction line (cuff upper suction line) 9 attached to the intubation tube 7 are connected to the input ends 1 and 2 of the switching cock 10.
Further, a figure actually used for the patient is shown in FIG. The Y piece 11 is connected to the ventilator, but is omitted. Here, the output of the switching cock is one, but basically, it is the same even if there are two outputs.

By connecting the sputum suction line from the intubation tube and the saliva suction lie to the medical biofluid switching cock of the present invention as shown in FIG. 10, the switching lever is operated according to the timing when sputum suction or saliva suction is required. The suction work is completed just by doing. Therefore, it is not necessary to replace the sputum suction line and the saliva suction line with the suction line as in the conventional case, and the risk of infection is eliminated. In addition, since the labor of pre-treatment and post-treatment of the suction work, which has been performed separately from the conventional sputum suction work and saliva suction work, can be done only once, the suction work as a whole can be greatly shortened and freed from complications.
Although the connection of the switching cock to the intubation tube has been described here, the same effect can be applied to the tracheostomy tube or the tracheal tube. Therefore, the interpretation of the intubation tube includes a tracheostomy tube and a tracheal tube.

FIG. 13 shows the work procedure of sputum removal (suction) and saliva removal (suction) using one medical biofluid switching cock for the intubation tube. The switching cock used here may be either a 2-output switching cock or a 1-output switching cock. After setting at the start (S0), a small amount of sputum and saliva are sucked in the first pattern (S10). Normally, the step of S10 is continued, but when a predetermined timing (S11) comes, the switching lever is operated. The predetermined timing is when sputum removal is required (S20) and when saliva removal is required (S30). For example, the detection of the sputum removal timing is performed by a pressure sensor provided in the suction line or a time set in advance. It doesn't matter if the timer is set, but it is the timing when sputum is accumulated to the extent that sputum needs to be removed, and the timing of saliva removal is the timing when oral care is performed about 3 times / day, but saliva is accumulated. It is the timing of doing.

At the time of sputum removal timing (S20), by switching the switching lever to the second pattern (S21), as described above, the shape of the notch of the switching cock makes it easier for the flow path of the sputum suction line to flow, and sputum removal. Is possible. The sputum removal time may be detected by the above-mentioned sensor or timer, or may be visually checked by the operator. After the sputum removal is completed (S22), the switching lever is switched to the first pattern (S23), and the suction returns to the first pattern (S10).
The timing of saliva removal (S30) also returns from S31, S32, S33 to S10 in the same manner as sputum removal. The end of removal of sputum and saliva ends with withdrawal from respiratory management of artificial respiration (S12).
In this way, one switching cock and one system enable continuous removal of sputum and saliva. Infection prevention, short-time operation, and simplification of work are possible compared to the conventional method.

(Second Example)
FIG. 11 shows an example of using the sputum saliva suction device using the intubation tube of the first embodiment. The intubation tube is inserted into the patient's body, and FIG. 11 shows an overall view of the system to which the Y piece 11 of FIG. 10 and the output line 12 are connected. The output line 12 at the output end of the switching cock 10 is connected to the biological fluid absorbing device 13 of the system. The biological fluid absorbing device 13 has a built-in storage container (storage box) for storing sputum and saliva, a vacuum pump as a negative pressure source, a sensor, and the like. However, the negative pressure source may be connected to the vacuum port of the infrastructure equipment in the hospital. The Y piece 11 is connected to the respirator 14 to control exhalation and inspiration.
The sputum saliva suction device is characterized in that even highly viscous sputum can be sucked and removed, and the effect of the method can be easily achieved.

(Third Example)
In addition to the intubation tube, the switching cock of the present invention has an example shown in FIG. FIG. 12 is a diagram used for aspiration of different kinds of biological fluids such as thoracic leak from the upper diaphragm and peritoneal leak from the lower diaphragm. The thoracic leak fluid suction line 15 and the abdominal cavity leak fluid suction line 16 are connected to the switching cock 10. Here, the medical body fluid switching cock has 2 inputs and 1 output, but 2 inputs and 2 outputs may be used.
Although not shown, the output line from the output end of the switching cock 10 is connected to the biological fluid absorbing device as in FIG. 11, and constitutes a biological fluid suction device as a system. Further, the related device such as the respirator of FIG. 11 differs depending on the type of the biological fluid to be sucked.

Exactly as in the case of the intubation tube described above, there are suction modes of the first pattern, the second pattern, and the third pattern by operating the switching lever. In the first pattern, a small amount of the thoracic cavity leak and the abdominal cavity leak are sucked, in the second pattern, the thoracic leak, which is the first biological fluid, is mainly sucked, and in the third pattern, the second. It is possible to mainly inhale the peritoneal leakage fluid, which is the biological fluid of. Mainly, suction means that the amount of suction is relatively large. The output end of the switching cock is connected to the output line, which is directly connected to, for example, a negative pressure source installed in the hospital and continuously sucked.

As described above, by using the switching cock of the present invention, it is possible to easily carry out suction and removal of different kinds of biological fluids from two sites of the same patient at the same time. As described above, the same effect can be obtained as a medical biofluid switching cock for biofluids other than sputum and saliva by the intubation tube.
The medical biofluid switching cock of the present invention falls under class I as a medical device.

1, 2 Input end 3, 3a, 3b Output end 4 Switching lever 5 Notch 6 Opening 7 Intubation tube 8 Sputum suction line 9 Saliva suction line (cuff upper suction line)
10, 10a Switching cock 11 Y piece 12 Switching cock output line 13 Biofluid absorption device 14 Ventilator 15 Thoracic cavity leak fluid suction line 16 Peritoneal leak fluid absorption line

In order to solve such a problem, the present invention has a case where sputum suction line and saliva suction line of an intubation tube are used as input ends to automatically and continuously suck sputum and saliva, and mainly sucks sputum or saliva. We have found a switching cock that can switch between the case and the case, and have reached the present invention. It was also found that this switching cock can be applied to the sputum suction line of the intubation tube, the input end other than the saliva suction line, that is, the suction of other different kinds of biological fluids.
That is, the medical biofluid switching cock according to claim 1 is a medical biofluid switching cock that switches the flow state of different kinds of biofluids from two input ends to one output end, and there are three switching patterns. The first pattern is a state in which a small amount flows from both of the two input ends to the output end, and the second pattern is a state in which a small amount flows mainly from one end of the two input ends to the output end. The pattern 3 is in a state where it mainly flows from the other end of the two input ends to the output end, and is provided with a switching lever for switching the switching patterns, and the biofluid is one of the two input ends. It is continuously sucked to the output end, and the flow rate of the one end of the two input ends in the second pattern is larger than the flow rate of the one end in the first pattern, and the second pattern The flow rate of the other end of the two input ends in the first pattern is equal to or zero with the flow rate of the other end in the first pattern, and the flow rate of the two input ends in the third pattern is said. The flow rate at the other end is larger than the flow rate at the other end in the first pattern, and the flow rate at one end of the two input ends in the third pattern is the flow rate at one end in the first pattern. It is characterized in that it is equal to or zero with the flow rate of.

The medical biofluid switching cock according to claim 2 is a medical biofluid switching cock that switches the flow state of different kinds of biofluids from two input ends to two output ends, and there are three switching patterns. The first pattern is in a state of flowing from both of the two input ends to the output end, and the second pattern is in a state of flowing mainly from one end of the two input ends to the output end. The pattern mainly flows from the other end of the two input ends to the output end, and includes a switching lever for switching the switching pattern, and the switching is performed at the opening of the flow path from the input end to the output end. It is characterized in that the flow rate or flow path of the biological fluid is adjusted by the width of the gap formed by the shape of the notch provided by the lever.

The medical biofluid switching cock according to claim 3 is characterized in that the first output end of the two output ends intermittently outputs and the second output end continuously outputs .

Further, in the medical biofluid switching cock according to claim 4, one end of the two input ends is mainly sputum from the patient's body, and the other end is mainly saliva from the patient's body. It is characterized by being a biological fluid.
Further, in the medical biofluid switching cock according to claim 5, the second pattern is a pattern for when a large amount of sputum is clogged, and the third pattern is for sucking saliva in oral care. It is characterized by the pattern of.

The intubation tube according to claim 6 is characterized in that one end of the two input ends of the medical biofluid switching cock is connected to the sputum suction line and the other end is connected to the saliva suction line .
The sputum saliva suction device according to claim 7 is provided with an intubation tube, and the output end of the medical biofluid switching cock is connected to a negative pressure source.

The biological fluid suction device according to claim 8, characterized by using the medical biological fluid switching cock.

Further, according to the sputum saliva suction device of the present invention, by connecting the output end of the intubation tube of the present invention to a negative pressure source installed in the hospital, the above three patterns of suction can be performed only by using standard hospital equipment. It will be possible. Therefore, an expensive dedicated sputum saliva suction device is not required, which is advantageous in terms of operating cost. As compared to the human cost of the conventional methods, reduction of working time, that Do and improve work safety.

Claims (11)

A medical biofluid switching cock that switches the flow state of different types of biofluids from two input ends to one output end. There are three switching patterns, and the first pattern is either of the two input ends. A small amount of water flows from one end to the output end, the second pattern mainly flows from one end of the two input ends to the output end, and the third pattern is the other end of the two input ends. A medical biofluid switching cock characterized in that it is provided with a switching lever that mainly flows from the output terminal to the output end and switches between these switching patterns. The medical biofluid switching cock according to claim 1, wherein the biofluid is continuously sucked from the two input ends to the one output end, and of the two input ends in the second pattern. The flow rate at one end is larger than the flow rate at one end in the first pattern, and the flow rate at the other end of the two input ends in the second pattern is the flow rate at the other end in the first pattern. The flow rate of the other end of the two input ends in the third pattern is equal to or zero than the flow rate of the end, and is larger than the flow rate of the other end in the first pattern. A medical biofluid switching cock characterized in that the flow rate of one end of the two input ends in the third pattern is equal to or zero with the flow rate of the one end in the first pattern. A medical biofluid switching cock that switches the flow state of different types of biofluids from two input ends to two output ends. There are three switching patterns, and the first pattern is either of the two input ends. The second pattern flows mainly from one end of the two input ends to the output end, and the third pattern flows from the other end of the two input ends. A medical biofluid switching cock characterized by having a switching lever that mainly flows to the output end and switches between those switching patterns. The medical biofluid switching cock according to claim 3, wherein the first output end of the two output ends intermittently outputs and the second output end continuously outputs. Biofluid switching cock. The shape of the notch portion of the medical biofluid switching cock according to any one of claims 1 to 4, wherein the switching lever is provided at the opening of the flow path from the input end to the output end. A medical biofluid switching cock characterized in that the flow rate or flow path of the biofluid is adjusted by the width of the gap generated by the above. The medical biofluid switching cock according to any one of claims 1 to 5, wherein one end of the two input ends is a biological fluid mainly composed of sputum from the patient's body, and the other end is. , A medical biofluid switching cock characterized in that it is a biofluid mainly composed of saliva from the patient's body. The medical biofluid switching cock according to claim 6, wherein the second pattern is for when a large amount of sputum is clogged, and the third pattern is for sucking saliva in oral care. A medical biofluid switching cock characterized by the pattern of. An intubation tube according to claim 7, wherein one end of the two input ends of the medical biofluid switching cock is connected to a sputum suction line, and the other end is connected to a saliva suction line. A sputum saliva suction device comprising the intubation tube according to claim 8, wherein the output end of the medical biofluid switching cock is connected to a negative pressure source. A biofluid suction device according to any one of claims 1 to 5, wherein the medical biofluid switching cock is used. The method for sucking sputum and saliva using the medical biofluid switching cock according to claim 6, wherein the first pattern is a pattern for sucking sputum and saliva, and the second pattern is mainly continuous sputum. The suction pattern, the third pattern is a pattern in which saliva is mainly continuously sucked, and is usually sucked by the first pattern, and is transferred to the second pattern or the third pattern at a predetermined timing. A method for sucking sputum and saliva, which comprises switching, switching, and after each suction pattern is completed, returning to the first pattern by switching, and repeating the switching.

Images