CN215134315U - Blood-water separation negative pressure suction device - Google Patents

Abstract

The utility model discloses a blood-water separation negative pressure suction device; comprises a catheter, a liquid discharge pipe, a hydrops collector, a negative pressure suction pipe and a negative pressure suction device; the effusion collector is provided with a plasma collecting cavity and a water collecting cavity; the bottom of the plasma collecting cavity is provided with a liquid guide port connected to the water collecting cavity; a plasma separation membrane for separating plasma and enabling water to pass is arranged at the liquid guide port; the liquid discharge pipe is connected between the liquid guide pipe and the plasma collecting cavity; the negative pressure suction tube is connected between the water collecting cavity and the negative pressure suction device. Use this application to patient's body operation wound internal blood when carrying out the negative pressure suction, can realize plasma and separation of water for medical personnel can audio-visually confirm patient's body operation wound position bleeding volume according to the blood plasma volume, and then confirm whether give patient's blood transfusion and confirm the blood transfusion volume of giving patient's blood transfusion when needing giving patient's blood transfusion for the operation in-process according to the bleeding volume, relevant operation is directly perceived, feasible, make operation safe and reliable, and then, this application practicality is strong.

Description

Blood-water separation negative pressure suction device

Technical Field

The utility model relates to a medical nursing materials technical field, specifically say, relate to a blood-water separation negative pressure suction device.

Background

In the operating rooms of various hospitals, when the body of a patient is operated, flushing water (physiological saline) is needed to flush the surgical wound of the body of the patient so as to flush the blood stain of the surgical wound of the body of the patient completely, and the generated blood is drained out, and then main surgical operation can be performed.

Conventionally, a negative pressure aspirator is directly used to suck blood generated in a surgical wound of a patient under negative pressure without separating blood from washing water, and medical staff estimates the amount of bleeding of the surgical wound of the patient through the amount of the blood drained, and then estimates whether or not to transfuse blood to the patient during the surgery and the amount of blood transfused to the patient when blood needs to be transfused to the patient according to the degree of the bleeding.

Although the method is widely used, certain defects and shortcomings still exist;

particularly, on one hand, the medical staff estimates the amount of bleeding of the operation wound of the body of the patient through the drainage amount of the blood which is led out, the problem of inaccurate estimation exists, when the estimation is wrong, the amount of bleeding of the patient is more and the patient cannot be timely perceived, shock and even death are easily caused in the operation process of the patient, on the other hand, when the estimation of the amount of bleeding is not accurate, the amount of blood transfusion for the patient is not controlled well, the effect of maintaining the normal vital signs of the patient cannot be achieved due to too little amount of blood transfusion, and the blood is wasted due to too much amount of blood transfusion.

Accordingly, the present inventors have devised the present application based on the above description to solve the related art problems.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is to overcome the defects of the prior art and provide a blood-water separation negative pressure suction device.

The utility model provides a technical scheme that prior art problem adopted is: a blood-water separation negative pressure suction device comprises a liquid guide pipe, a liquid discharge pipe, a liquid accumulation collector, a negative pressure suction pipe and a negative pressure suction device, wherein the liquid guide pipe is suitable for extending into an operation wound of a patient body;

the effusion collector is provided with a plasma collecting cavity at the upper part and a water collecting cavity at the lower part; the bottom of the plasma collecting cavity is provided with a liquid guide port communicated to the water collecting cavity; a plasma separation membrane for obstructing plasma and enabling water to pass through is arranged at the liquid guide port;

the liquid discharge pipe is connected between the liquid guide pipe and the plasma collecting cavity; the negative pressure suction tube is connected between the water collection cavity and the negative pressure suction device.

The above technical solution is further described as follows:

preferably, the plasma collecting cavity is arranged at the left upper part of the effusion collector, so that the right upper part and the lower part of the plasma collecting cavity can be the water collecting cavity;

the liquid discharge pipe is connected between the rear end of the liquid guide pipe and the top of the plasma collection cavity; the negative pressure suction pipe is connected between the top of the water collection cavity and the air inlet end of the negative pressure suction device.

Preferably, the effusion collector is made of transparent plastic materials; a first indication scale used for indicating the plasma collection amount in the plasma collection cavity is vertically arranged at the position, opposite to the plasma collection cavity, of the left upper part of the front end surface of the effusion collector; the right side of the front end face of the accumulated liquid collector is right opposite to a second indication scale used for indicating the water collection amount in the water collection cavity is vertically arranged at the position of the water collection cavity.

Preferably, the upper part of the left side surface of the effusion collector is provided with a first drainage tube communicated to the bottom in the plasma collecting cavity; a first switch valve is arranged on the first liquid discharge pipe; a second liquid discharge pipe communicated to the bottom in the water collection cavity is arranged at the lower part of the right side surface of the accumulated liquid collector; and a second switch valve is arranged on the second liquid discharge pipe.

Preferably, an air suction flow control valve for controlling the air suction speed is mounted on the negative pressure suction pipe.

Preferably, the device also comprises a washing water guide pipe used for guiding washing water into the surgical wound of the patient body;

the catheter comprises a catheter head and a grip connected to the rear end of the catheter head; a first liquid guide cavity and a second liquid guide cavity are arranged in the liquid guide head along the length direction of the liquid guide head in parallel; a plurality of first liquid passing holes communicated to the first liquid guide cavity are formed in the outer wall of the liquid guide head close to the front end of the liquid guide head; a plurality of second liquid passing holes communicated to the second liquid guide cavity are formed in the outer wall of the liquid guide head close to the front end of the liquid guide head; a first connecting head communicated to the first liquid guide cavity is arranged on the outer wall of the liquid guide head and close to the rear end of the liquid guide head; a second connector communicated to the second liquid guide cavity is further arranged on the outer wall of the liquid guide head close to the rear end of the liquid guide head;

the liquid outlet end of the flushing water guide pipe is connected to the first connector; and the liquid inlet end of the liquid discharge pipe is connected to the second connector.

Preferably, the front end of the liquid guide head is closed and is formed with a smooth protruding part protruding forwards; the surface of the smooth protruding part is adhered with a plurality of villi used for wiping the internal tissues of the operation wound of the body of the patient in an electrostatic flocking way.

Preferably, the washing water guide pipe is formed into a Y-shaped structure and comprises a first branch pipe, a second branch pipe and a third branch pipe which are communicated with each other; the tail end of the first branch pipe is connected with a first plug needle which is suitable for being inserted into a physiological saline bottle or a physiological saline bag; the end of the second branch pipe is connected with a second plug needle which is suitable for being inserted into a physiological saline bottle or a physiological saline bag; the tail end of the third branch pipe is connected to the second connector.

Preferably, the device also comprises a first flow limiting clamp, a second flow limiting clamp and a liquid flow regulator for regulating the flow of the physiological saline;

the first current limiting clamp is clamped outside the first branch pipe; the second current limiting clamp is clamped outside the second branch pipe; the liquid flow regulator is fixedly sleeved outside the third branch pipe.

Preferably, a first, a second and a third contamination prevention sleeve are also included;

the first anti-pollution sleeve is fixedly sleeved outside the first plug needle in a pluggable manner; the second anti-pollution sleeve is fixedly sleeved outside the second plug needle in a pluggable manner; the third pollution prevention sleeve is fixedly sleeved outside the liquid guide head in a pluggable mode.

The utility model has the advantages that:

firstly, the blood-water separation negative pressure suction device provided by the utility model improves the traditional negative pressure suction device when in specific implementation, so that the effusion collector is provided with a plasma collecting cavity at the upper part and a water collecting cavity at the lower part; and the bottom of the plasma collecting cavity is communicated with the liquid guide port of the water collecting cavity to form a plasma separation membrane for separating plasma and enabling water to pass through, so that when the negative pressure suction is carried out on blood water in the wound of the operation of the patient by using the blood plasma collecting cavity, the separation of the plasma and the water can be realized, medical staff can determine the blood output of the wound of the operation of the patient according to the blood plasma more visually, and further determine whether the blood is transfused for the patient in the operation process or not according to the corresponding blood output and determine the blood output for the patient when the blood is transfused for the patient, the related operation is more visual and clear and more practical, the operation of the patient is safe, and shock and even death can not be caused due to the fact that the blood output is not well controlled, and further, the blood plasma collecting cavity is reliable to use, high in practicability and is suitable for popularization.

Drawings

FIG. 1 is a schematic view of the whole plane structure of the blood-water separation negative pressure suction device of the present invention;

FIG. 2 is an exploded view of the blood-water separation negative pressure suction device of the present invention;

FIG. 3 is a schematic view of the overall plan structure of the catheter according to the embodiment of the present invention;

figure 4 is an enlarged partial view of the catheter tip of figure 3;

fig. 5 is a schematic view of an overall structure of the first current limiting clip according to the embodiment of the present invention;

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Reference numerals:

a blood-water separation negative pressure suction device 1000;

a catheter 10;

a liquid guide head 101; a first drainage lumen 1011; second drainage lumen 1012; a grip 102; a first liquid-passing hole 1013; a second liquid passage hole 1014; a first connector 1015; a second connector 1016; a rounded protrusion 1017; fluff 1018;

a drain pipe 20;

a liquid accumulation collector 30;

a plasma collection chamber 301; a drainage port 3011; a water collection chamber 302; a plasma separation membrane 303; a first indication scale 304; a second indication scale 305; a first drain pipe 306; a first on-off valve 307; a second drain pipe 308; a second switching valve 309; a handle 310;

a negative pressure suction tube 40;

a negative pressure aspirator 50;

an intake flow control valve 60;

a washing water guide pipe 70;

a first branch pipe 701; a first plug pin 7011; a second branch pipe 702; a second plug pin 7021; a third branch line 703;

a first current limiting clip 80;

a pressing portion 801; a U-shaped clamping portion 802; a chucking groove 8021; a conduit via 8022; a clamping portion 803; a first grip portion 8031; a second grip portion 8032;

a second pinch clamp 90;

a liquid flow regulator 100;

a first anti-contamination sleeve 110;

a second anti-contamination sleeve 120;

a third contamination prevention sleeve 130;

Detailed Description

The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, so as to clearly and intuitively understand the inventive substance of the present invention.

As shown in connection with fig. 1-5;

the utility model provides a blood-water separation negative pressure suction device 1000, which comprises a catheter 10 suitable for extending into a wound of a patient body operation, a liquid discharge pipe 20, a liquid accumulation collector 30 for collecting blood water in the wound of the patient body operation, a negative pressure suction pipe 40 and a negative pressure suction device 50;

wherein the effusion collector 30 has a plasma collection chamber 301 in the upper part and a water collection chamber 302 in the lower part; the bottom of the plasma collecting cavity 301 is provided with a liquid guide port 3011 communicated to the water collecting cavity 302; a plasma separation membrane 303 for blocking plasma and allowing water to pass is installed at the liquid guide port 3011;

the drainage tube 20 is connected between the catheter 10 and the plasma collection chamber 301; the negative pressure suction tube 40 is connected between the water collection chamber 302 and the negative pressure suction apparatus 50.

As described above, it is clear that the present invention is mainly used as the blood-water separation negative pressure suction apparatus 1000 in practical implementation.

The application improves the traditional negative pressure suction apparatus, so that the effusion collector 30 is provided with a plasma collecting cavity 301 at the upper part and a water collecting cavity 302 at the lower part, and a plasma separating membrane 303 which is used for separating plasma and enabling water to pass through is arranged at a liquid guide port 3011 which leads the bottom of the plasma collecting cavity 301 to be communicated with the water collecting cavity 302, thus when the application is used for carrying out negative pressure suction on blood in an operation wound of a patient body, the separation of the plasma and the water can be realized, medical staff can more intuitively determine the blood output of the operation wound part of the patient body according to the blood volume, further determine whether blood is transfused for the patient in the operation process and the blood transfusion volume for the patient when the blood is transfused for the patient according to the corresponding blood output, the related operation is more intuitive and clear, the operation is more practical, the operation of the patient is safe, and shock caused by the fact that the blood output is not controlled well, and even die.

Furthermore, the application is reliable in use, high in practicability and suitable for popularization.

Preferably, in this embodiment, the plasma collection cavity 301 is disposed at the upper left portion of the effusion collector 30, so that the upper right portion and the lower portion of the plasma collection cavity 301 can be the water collection cavity 302;

based on this, the drainage tube 20 is connected between the back end of the catheter 10 and the inner top of the plasma collection cavity 301; the negative pressure suction tube 40 is connected between the top of the water collection cavity 302 and the air inlet end of the negative pressure suction device 50.

From the above, it can be understood that the blood plasma collecting chamber 301 of the present application is designed to be small in size because the surgical wound of the patient does not typically produce much blood; the volume of flush water used is typically large, and therefore, the water collection chamber 302 described herein is designed to be relatively large to enable collection of a relatively large volume of flush water.

Further, in the present application, the effusion collector 30 is made of a transparent plastic material; a first indicating scale 304 for indicating the plasma collection amount in the plasma collection cavity 301 is vertically arranged at the position, opposite to the plasma collection cavity 301, of the left upper part of the front end surface of the effusion collector 30; the right side of the front end face of the effusion collector 30 is opposite to the position of the water collection cavity 302, and a second indication scale 305 for indicating the water collection amount in the water collection cavity 302 is vertically arranged.

Therefore, the effusion collector 30 is made of transparent plastic material, so that medical staff can observe the plasma amount collected in the plasma collecting cavity 301 and the water amount collected in the water collecting cavity 302 conveniently through the effusion collector. The medical staff can accurately determine the finally collected plasma volume in the plasma collection cavity 301 by contrasting the first indication scale 304; the medical staff can accurately determine the finally collected water amount in the water collection cavity 302 by contrasting the second indication scale 305, so that the application has better effect.

Further, in this embodiment, the upper portion of the left side surface of the effusion collector 30 is provided with a first drainage tube 306 communicated to the bottom inside the plasma collection cavity 301; a first switch valve 307 is arranged on the first liquid discharge pipe 306; a second liquid discharge pipe 308 communicated to the bottom in the water collection cavity 302 is arranged at the lower part of the right side surface of the accumulated liquid collector 30; a second switching valve 309 is provided on the second drain pipe 308.

Thus, when the first switch valve 307 is subsequently opened, the plasma in the plasma collection chamber 301 is discharged, and when the second switch valve 309 is subsequently opened, the water in the water collection chamber 302 is discharged.

Further, in the present embodiment, an intake flow control valve 60 for controlling the suction speed of the negative pressure is attached to the negative pressure suction tube 40.

Therefore, when more flushing water is drained into the surgical wound of the patient body, the air suction flow control valve 60 can be adjusted to increase the negative pressure suction force, and then the speed of leading blood out of the surgical wound of the patient body is increased, and when less flushing water is drained into the surgical wound of the patient body, the air suction flow control valve 60 can be adjusted to decrease the negative pressure suction force, and then the speed of leading the blood out of the surgical wound of the patient body is decreased, so that the application is flexible to use.

Furthermore, in the present embodiment, the present application further comprises a rinsing water guide tube 70 for guiding rinsing water into the surgical wound of the patient's body;

wherein, the catheter 10 comprises a liquid guide head 101 and a handle 102 connected with the rear end of the liquid guide head 101; a first liquid guide cavity 1011 and a second liquid guide cavity 1012 are arranged in the liquid guide head 101 along the length direction in parallel; a plurality of first liquid passing holes 1013 communicated with the first liquid guide cavity 1011 are formed in the outer wall of the liquid guide head 101 near the front end thereof; a plurality of second liquid passing holes 1014 communicated to the second liquid guide cavity 1012 are formed in the outer wall of the liquid guide head 101 close to the front end of the liquid guide head; a first connecting head 1015 communicated with the first liquid guide cavity 1011 is arranged on the outer wall of the liquid guide head 101 close to the rear end thereof; a second connector 1016 communicated to the second liquid guide cavity 1012 is further arranged on the outer wall of the liquid guide head 101 close to the rear end of the liquid guide head;

based on this, the outlet end of the flushing water draft tube 70 is connected to the first connecting joint 1015; the liquid inlet end of the liquid discharge pipe 20 is connected to the second connector 1016.

Thus, it is clear that:

on the one hand, medical personnel handheld handle 102, can be convenient with the drainage head 101 inserts patient's health operation wound in to it interior drainage sparge water and will wash the back blood flow through the drainage head 101 flows out, makes this application catheter 10 is integrative dual-purpose, and the function is more comprehensive.

On the other hand, the catheter 10 is integrated for two purposes, so that a drainage head for draining flushing water into an operation wound of a patient body is omitted, and the use cost of the medical drainage system is lower.

In the present embodiment, the front end of the liquid guide head 101 is closed and is formed with a smooth protrusion 1017 protruding forward; the smooth protrusion 1017 is adhered with a plurality of piles 1018 for wiping the internal tissue of the surgical wound on the patient's body by electrostatic flocking.

Therefore, when the medical instrument is used, the user can hold the handle 102 by hand and lightly stir the medical instrument so as to wipe off blood stains, tissue residues and the like adhered to the outside of the operation wound tissue of the body of the patient through the villus 1018, and then subsequent outward negative pressure suction is facilitated, so that the use effect of the medical instrument can be effectively improved.

Moreover, the plurality of the fine hairs 1018 are adhered to the surface of the smooth protruding portion 1017 in an electrostatic flocking manner, so that the fine hairs 1018 are not easy to fall off and are not easy to remain in the surgical wound of the patient body, the application reliability is good, and meanwhile, the softness of the plurality of the fine hairs 1018 is good, so that the patient feels comfortable when blood stain, tissue residue and the like outside the surgical wound tissue of the patient body are wiped through the fine hairs 1018.

Further, the use effect of the present application can be further improved.

It should be added that, in the present technical solution, the flushing water flow guide pipe 70 is formed into a Y-shaped structure, and includes a first branch pipe 701, a second branch pipe 702, and a third branch pipe 703 that are communicated with each other;

wherein, the end of the first branch pipe 701 is connected with a first plug needle 7011 which is suitable for being inserted into a physiological saline bottle or a physiological saline bag; the end of the second branch pipe 702 is connected with a second plug needle 7021 which is suitable for being inserted into a physiological saline bottle or a physiological saline bag; the end of the third branch 703 is connected to the second connector 1016.

In addition, in the present technical solution, the present application further includes a first restriction clip 80, a second restriction clip 90, and a liquid flow regulator 100 for regulating the flow of the physiological saline;

wherein the first flow restricting clip 80 is clamped outside the first branch pipe 701; the second pinch clamp 90 is clamped out of the second manifold 702; the liquid flow regulator 100 is fixedly sleeved outside the third branch pipe 703.

Thus, it can be understood that:

on one hand, when it is required to wash the surgical wound site of the patient's body with a bottle or a bag of physiological saline, the first plug needle 7011 is inserted into the bottle or the bag of physiological saline only, or the second plug needle 7021 is inserted into the bottle or the bag of physiological saline only to take in the bottle or the bag of physiological saline;

on the other hand, when two bottles or two bags of saline are required, the first plastic pin 7011 may be inserted into the saline bottle or the saline bag, and the second plastic pin may be inserted into the saline bottle or the saline bag, so as to take up two bottles or two bags of saline simultaneously or sequentially.

And, when a plurality of bottles or bags of saline are required, the first plug needle 7011 may be inserted into a first saline bottle or a first saline bag, and the second plug needle 7021 may be inserted into a second saline bottle or a second saline bag, and then the second branch pipe 702 may be clamped by the second current limiting clamp 90, the first saline bottle or the first saline bag may be supplied with the first bottle of saline or the first bag of saline first, the second current limiting clamp 90 may be opened when the first saline bottle or the first saline bag is about to be used up, the second saline bottle or the second bag of saline may be supplied with the second bottle of saline or the second bag, and the first branch pipe 701 may be clamped by the first current limiting clamp 80 when the first saline bottle or the first saline bag is about to be used up, the first saline bottle or the first saline bag is taken down, then the third saline bottle or the third saline bag is inserted into the first plug pin 7011, and then when the saline in the second saline bottle or the second saline bag is about to run out, the first current limiting clamp 80 is opened, so that the third saline bottle or the third saline bag is supplied with the third saline bottle or the third saline bag, and the operation is repeated in such a circulating way, namely, the application can continuously supply multiple bottles or multiple bags of saline, so that the application can be used uninterruptedly, and the using effect can reach the best.

Meanwhile, by adjusting the fluid flow regulator 100, the flow rate of the physiological saline into the surgical wound of the patient body can be controlled, so that the irrigation rate can be controlled.

It is further to be added that, in particular implementation, the present application also includes first 110 and second 120 and third 130 contamination sleeves;

wherein the first anti-contamination sleeve 110 is fixed outside the first plug needle 7011 in a pluggable manner; the second anti-pollution sleeve 120 is fixedly sleeved outside the second plug needle 7021 in a pluggable manner; the third contamination prevention sleeve 130 is fixedly sleeved outside the liquid guide head 101 in a pluggable manner.

Therefore, before use, the first contamination prevention sleeve 110 is fixedly sleeved on the outside of the first plug needle 7011, the second contamination prevention sleeve 120 is fixedly sleeved on the outside of the second plug needle 7021, and the third contamination prevention sleeve 130 is fixedly sleeved on the outside of the liquid guide head 101, so that the first plug needle 7011, the second plug needle 7021, and the liquid guide head 101 are all good in contamination prevention, and meanwhile, the first contamination prevention sleeve 110 and the second contamination prevention sleeve 120 can be flexibly used in the use process so as to be capable of fixedly sleeved on the first plug needle 7011 or the second plug needle 7021 singly.

Furthermore, the application is flexible in use and has excellent use effect.

Still further, in the present embodiment, the first current limiting clamp 80 includes a pressing portion 801 horizontally disposed for operation, a U-shaped clamping portion 802 for clamping the pressing portion 801, and a clamping portion 803 for clamping/releasing the first branch pipe 701;

the rear end of the pressing part 801 is connected with the rear upper end of the U-shaped clamping part 802 to form a whole, and the front upper end of the U-shaped clamping part 802 is provided with a clamping groove 8021 for clamping the front end of the pressing part 801; the front middle part and the rear middle part of the U-shaped clamping part 802 are respectively provided with a pipeline through hole 8022 suitable for the first branch pipe 701 to pass through; the clamping portion 803 comprises a first clamping portion 8031 and a second clamping portion 8032, the first clamping portion 8031 is fixed on the lower bottom surface of the pressing portion 801, and the second clamping portion 8032 is fixed in the middle of the upper end surface of the U-shaped clamping portion 802 and is opposite to the first clamping portion 8031; the first branch pipe 701 passing through the two pipeline through holes 8022 is clamped between the first clamping part 8031 and the second clamping part 8032;

when the front end of the pressing portion 801 is pressed to be clamped into the clamping groove 8021, the front end of the pressing portion 801 and the U-shaped clamping portion 802 are fixed to form an annular structure, and the first branch pipe 701 is clamped by the first clamping portion 8031 and the second clamping portion 8032;

when the front end of the pressing portion 801 is pushed up to be separated from the locking groove 8021, the front end of the pressing portion 801 is separated from the U-shaped locking portion 802, and the first branch pipe 701 is released by the first clamping portion 8031 and the second clamping portion 8032.

Therefore, in the present application, the first limiting clamp 80 fixed to the outside of the first branch pipe 701 can freely clamp the first branch pipe 701 to limit the flow direction of the saline, and can freely release the first branch pipe 701 to drive the saline to flow therethrough, the first limiting clamp 80 only has a clamping state and a release state, and the first limiting clamp has a simple structure, is convenient to operate, has strong controllability and strong operability, and is suitable for use.

In addition, the structure of the second clip 90 in this embodiment is identical to that of the first clip 80, and will not be described herein.

Other embodiments, etc., will not be described herein.

To sum up, the utility model has the advantages that the whole structure is simple, easy to implement, easy to operate, the practicality is strong, and the specificity is strong, and low in manufacturing cost all need not increase too many cost in the improvement of structure and technique, makes the utility model discloses must have fine market spreading value, the utility model discloses can very welcome, can effectively popularize.

The above only is the preferred embodiment of the present invention, not limiting the patent protection scope of the present invention, all the changes of the equivalent structure or equivalent flow made by the contents of the specification and the drawings of the present invention or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims (10)

1. The utility model provides a blood-water separation negative pressure suction device which characterized in that: comprises a catheter suitable for extending into a surgical wound of a patient body, a liquid discharge pipe, a liquid accumulation collector used for collecting blood in the surgical wound of the patient body, a negative pressure suction pipe and a negative pressure suction device;

the effusion collector is provided with a plasma collecting cavity at the upper part and a water collecting cavity at the lower part; the bottom of the plasma collecting cavity is provided with a liquid guide port communicated to the water collecting cavity; a plasma separation membrane for obstructing plasma and enabling water to pass through is arranged at the liquid guide port;

the liquid discharge pipe is connected between the liquid guide pipe and the plasma collecting cavity; the negative pressure suction tube is connected between the water collection cavity and the negative pressure suction device.

2. The blood-water separation negative pressure suction device according to claim 1, characterized in that: the plasma collecting cavity is arranged at the upper left part of the effusion collector, so that the upper right part and the lower part of the plasma collecting cavity can be the water collecting cavity;

the liquid discharge pipe is connected between the rear end of the liquid guide pipe and the top of the plasma collection cavity; the negative pressure suction pipe is connected between the top of the water collection cavity and the air inlet end of the negative pressure suction device.

3. The blood-water separation negative pressure suction device according to claim 2, characterized in that: the accumulated liquid collector is made of transparent plastic materials; a first indication scale used for indicating the plasma collection amount in the plasma collection cavity is vertically arranged at the position, opposite to the plasma collection cavity, of the left upper part of the front end surface of the effusion collector; the right side of the front end face of the accumulated liquid collector is right opposite to a second indication scale used for indicating the water collection amount in the water collection cavity is vertically arranged at the position of the water collection cavity.

4. The blood-water separation negative pressure suction device according to claim 3, characterized in that: the upper part of the left side surface of the effusion collector is provided with a first drainage pipe communicated to the bottom in the plasma collecting cavity; a first switch valve is arranged on the first liquid discharge pipe; a second liquid discharge pipe communicated to the bottom in the water collection cavity is arranged at the lower part of the right side surface of the accumulated liquid collector; and a second switch valve is arranged on the second liquid discharge pipe.

5. The blood-water separation negative pressure suction device according to claim 4, characterized in that: and the negative pressure suction pipe is provided with an air suction flow control valve for controlling the negative pressure suction speed.

6. The blood-water separation negative pressure suction device according to any one of claims 1 to 5, characterized in that: the device also comprises a washing water guide pipe used for guiding washing water into the surgical wound of the patient body;

the catheter comprises a catheter head and a grip connected to the rear end of the catheter head; a first liquid guide cavity and a second liquid guide cavity are arranged in the liquid guide head along the length direction of the liquid guide head in parallel; a plurality of first liquid passing holes communicated to the first liquid guide cavity are formed in the outer wall of the liquid guide head close to the front end of the liquid guide head; a plurality of second liquid passing holes communicated to the second liquid guide cavity are formed in the outer wall of the liquid guide head close to the front end of the liquid guide head; a first connecting head communicated to the first liquid guide cavity is arranged on the outer wall of the liquid guide head and close to the rear end of the liquid guide head; a second connector communicated to the second liquid guide cavity is further arranged on the outer wall of the liquid guide head close to the rear end of the liquid guide head;

the liquid outlet end of the flushing water guide pipe is connected to the first connector; and the liquid inlet end of the liquid discharge pipe is connected to the second connector.

7. The blood-water separation negative pressure suction device according to claim 6, characterized in that: the front end of the liquid guide head is closed and is provided with a smooth protruding part protruding forwards; the surface of the smooth protruding part is adhered with a plurality of villi used for wiping the internal tissues of the operation wound of the body of the patient in an electrostatic flocking way.

8. The blood-water separation negative pressure suction device according to claim 7, characterized in that: the washing water flow guide pipe is formed into a Y-shaped structure and comprises a first branch pipe, a second branch pipe and a third branch pipe which are communicated with each other; the tail end of the first branch pipe is connected with a first plug needle which is suitable for being inserted into a physiological saline bottle or a physiological saline bag; the end of the second branch pipe is connected with a second plug needle which is suitable for being inserted into a physiological saline bottle or a physiological saline bag; the tail end of the third branch pipe is connected to the second connector.

9. The blood-water separation negative pressure suction device according to claim 8, characterized in that: the device also comprises a first flow limiting clamp, a second flow limiting clamp and a liquid flow regulator for regulating the flow of the physiological saline;

the first current limiting clamp is clamped outside the first branch pipe; the second current limiting clamp is clamped outside the second branch pipe; the liquid flow regulator is fixedly sleeved outside the third branch pipe.

10. The blood-water separation negative pressure suction device according to claim 8, characterized in that: the anti-pollution device also comprises a first anti-pollution sleeve, a second anti-pollution sleeve and a third anti-pollution sleeve;

the first anti-pollution sleeve is fixedly sleeved outside the first plug needle in a pluggable manner; the second anti-pollution sleeve is fixedly sleeved outside the second plug needle in a pluggable manner; the third pollution prevention sleeve is fixedly sleeved outside the liquid guide head in a pluggable mode.

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