CN113082333A

CN113082333A - Hemodialysis machine and endotoxin sampler equipped therewith

Info

Publication number: CN113082333A
Application number: CN202110376866.2A
Authority: CN
Inventors: 陈忠
Original assignee: Shanghai Pharmaceutical Blood Technology Industrial Development Co ltd
Current assignee: Shanghai Pharmaceutical Blood Technology Industrial Development Co ltd
Priority date: 2021-04-08
Filing date: 2021-04-08
Publication date: 2021-07-09

Abstract

The invention discloses a hemodialysis machine and an endotoxin sampler equipped with the same, relates to the technical field of hemodialysis, and aims to solve the problems that the hemodialysis machine in the prior art does not have an endotoxin sampling function, so that dialysate can be polluted no matter how the hemodialysis machine is operated, and the operation is extremely inconvenient. The invention is beneficial to completing the sampling of endotoxin under the condition of not polluting dialysate, has simple operation and solves the problem that the hemodialysis machine does not have the function of sampling endotoxin.

Description

Hemodialysis machine and endotoxin sampler equipped therewith

Technical Field

The invention relates to the technical field of hemodialysis, in particular to a hemodialysis machine and an endotoxin sampler equipped with the hemodialysis machine.

Background

The hemodialysis machine is divided into a blood monitoring alarm system and a dialysate supply system. The blood monitoring and alarming system comprises a blood pump, a heparin pump, arteriovenous pressure monitoring, air monitoring and the like; the dialysate supply system comprises a temperature control system, a liquid preparation system, a degassing system, a conductivity monitoring system, an ultrafiltration monitoring system, a blood leakage monitoring system and the like. The working principle is as follows: the concentrated solution for dialysis and the dialysis water are prepared into qualified dialysate through a dialysate supply system, and solute dispersion, permeation and ultrafiltration are carried out on the qualified dialysate through a hemodialyzer and patient blood led out by a blood monitoring alarm system; the blood of the patient after the action returns to the body of the patient through the blood monitoring alarm system, and the liquid after dialysis is taken as waste liquid and is discharged by the dialysate supply system; the whole dialysis process is completed by continuous circulation.

The traditional hemodialysis machine does not have an endotoxin sampling function, can cause the pollution of dialysate no matter how to operate, and is very inconvenient to operate.

Disclosure of Invention

The invention aims to solve the problems that the hemodialysis machine in the prior art does not have an endotoxin sampling function, causes dialysate pollution no matter how to operate, and is inconvenient to operate.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an endotoxin sampler, includes three-way pipe and needle tubing, three-way pipe upper end and lower extreme all are connected with the coupling through the intercommunication hose, the other side mouth of pipe department of three-way pipe installs the pipe joint, the activity runs through in the needle tubing has presses the handle, presses the handle bottom and is fixed with the piston that is located the needle tubing, the outer periphery integrated processing of needle tubing has the butt joint pipe that extends to the pipe joint intraductal, it is fixed through the ferrule locking to butt joint pipe and pipe joint pipe, the three-way pipe is connected with one side branch pipe of pipe joint and is installed first only liquid valve and second only liquid valve on the butt joint pipe respectively.

Preferably, threads are processed at the liquid outlet pipe of the needle tube, and the bottom of the needle tube is connected with a sealing head through the threads.

Preferably, a sealing sleeve is fixed on the inner circumferential surface of the sleeve pipe and sleeved on the outer circumferential surface of the butt joint pipe.

The utility model provides a hemodialysis machine, includes foretell endotoxin sampler, still includes air-tight valve, cerini dialyser cerini and blood pump, and the output of cerini dialyser cerini is connected with and is used for flowing back to the blood back flow of human body, the air-tight valve is installed on the blood back flow, the output of blood pump is connected with the output of cerini dialyser cerini through the transfer line, the input of blood pump is connected with blood output tube, installs the artery pressure gauge on the blood output tube.

Preferably, the infusion tube is provided with a heparin pump, the infusion tube is further connected with an external physiological saline bag through the infusion tube, and the infusion tube is further provided with an inflow pressure gauge.

Preferably, the dialysate input end of the dialyzer is connected with a dialysate barrel through a dialysate input pipe, the dialysate output end of the dialyzer is connected with a dialysate recovery barrel through a dialysate return pipe, and the endotoxin sampler is mounted on the dialysate return pipe.

Preferably, the blood return pipe is also provided with a vein pressure gauge and an air monitor.

The invention has the beneficial effects that:

the sampling device enters the needle tube through the three-way tube and the butt joint tube, then the first liquid stop valve and the second liquid stop valve are closed, the sealing head is unscrewed, and the pressing handle is pressed downwards, so that the sampling liquid in the needle tube is discharged under the pressing action of the piston, and the sampling of endotoxin is completed.

Drawings

Fig. 1 is a schematic structural diagram of a hemodialysis machine according to the present invention.

FIG. 2 is a schematic diagram of the endotoxin sampler of the present invention.

FIG. 3 is a schematic view of the connection structure of the butt pipe and the tee pipe in the endotoxin sampler of the present invention.

Reference numbers in the figures: 11 arterial pressure gauge, 12 blood return pipe, 13 blood output pipe, 14 air-tight valve, 15 dialyzer, 16 blood pump, 17 heparin pump, 18 transfusion pipe, 19 inflow pressure gauge, 110 dialysate input pipe, 111 dialysate barrel, 112 dialysate recovery barrel, 113 dialysate return pipe, 21 pipe joint, 22 three-way pipe, 23 communicating hose, 24 first liquid stop valve, 25 second liquid stop valve, 26 socket pipe, 27 pipe hoop, 28 pressing handle, 29 piston, 210 needle tube, 211 sealing head, 212 butt joint pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-3, an endotoxin sampler comprises a tee 22 and a needle tube 210, wherein the upper end and the lower end of the tee 22 are both connected with a pipe joint 21 through a communicating hose 23, a socket 26 is installed at the other side pipe orifice of the tee 22, a pressing handle 28 movably penetrates through the needle tube 210, a piston 29 positioned in the needle tube 210 is fixed at the bottom of the pressing handle 28, a butt joint pipe 212 extending to the inner side of the socket 26 is integrally processed on the outer circumferential surface of the needle tube 210, the butt joint pipe 212 and the socket 26 are locked and fixed through a pipe hoop 27, and the tee 22 is connected with a branch pipe at one side of the socket 26 and the butt joint pipe 212 which are respectively provided with a first liquid stop valve 24 and a second liquid stop valve 25.

In an alternative embodiment, the outlet tube of the syringe 210 is threaded, and the bottom of the syringe 210 is threadably connected to a sealing head 211.

In an alternative embodiment, a sealing sleeve is secured to the inner circumferential surface of the sleeve 26 and is sleeved over the outer circumferential surface of the interface tube 212.

A hemodialysis machine comprises the endotoxin sampler, an air-tight valve 14, a dialyzer 15 and a blood pump 16, wherein the output end of the dialyzer 15 is connected with a blood return pipe 12 for returning to a human body, the air-tight valve 14 is arranged on the blood return pipe 12, the output end of the blood pump 16 is connected with the output end of the dialyzer 15 through a transfusion pipe 18, the input end of the blood pump 16 is connected with a blood output pipe 13, and an arterial pressure gauge 11 is arranged on the blood output pipe 13.

In an alternative embodiment, a heparin pump 17 is installed on the infusion tube 18, the infusion tube 18 is connected with an external physiological saline bag through the infusion tube, and an inflow pressure gauge 19 is also installed on the infusion tube 18.

In an alternative embodiment, the dialysate input end of the dialyzer 15 is connected to a dialysate tank 111 through a dialysate input pipe 110, the dialysate output end of the dialyzer 15 is connected to a dialysate recovery tank 112 through a dialysate return pipe 113, and the endotoxin sampler is mounted on the dialysate return pipe 113.

In an alternative embodiment, the blood return tube 12 is also fitted with a venous pressure gauge and an air monitor.

The working principle is as follows: the traditional hemodialysis machine does not have an endotoxin sampling function, can cause the pollution of dialysate no matter how to operate, and is very inconvenient to operate, in the embodiment, a blood return pipe 12 and a blood output pipe 13 are inserted into veins and arteries of a human body, blood in the human body flows into a liquid conveying pipe 18 through the work of a blood pump 16, the blood is prevented from being coagulated into blood clots through a heparin pump 17, meanwhile, the blood flows into a pressure gauge 19 to monitor inflow pressure, dialysate in a dialysate barrel 111 enters a dialyzer 15 to pass through under the action of a dialysate input pipe 110, the dialysate flows back to a dialysate recovery barrel 112 through a dialysate return pipe 113 after hemodialysis, and the dialyzed blood flows back to the human body through the dialyzer 15 and the blood return pipe 12;

after the dialysate return pipe 113 discharges polluted dialysate, waste liquid enters the tee pipe 22 through the communicating hose 23, the first liquid stop valve 24 and the second liquid stop valve 25 are opened, the needle tube 210 is communicated with the tee pipe 22 under the action of the butt pipe 212, the dialysate can enter the needle tube 210 through the tee pipe 22 and the butt pipe 212, then the first liquid stop valve 24 and the second liquid stop valve 25 are closed, the sealing head 211 is unscrewed, the handle 28 is pressed downwards, sampling liquid in the needle tube 210 is discharged under the action of the downward pressing of the piston 29, and accordingly sampling on endotoxin is completed.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. An endotoxin sampler is characterized by comprising a three-way pipe (22) and a needle tube (210), the upper end and the lower end of the three-way pipe (22) are connected with a pipe joint (21) through a communicating hose (23), a pipe orifice at the other side of the three-way pipe (22) is provided with a sleeve pipe (26), a pressing handle (28) is movably penetrated in the needle tube (210), the bottom of the pressing handle (28) is fixed with a piston (29) positioned in the needle tube (210), the outer circumferential surface of the needle tube (210) is integrally processed with a butt joint tube (212) extending to the inner side of the sleeve joint tube (26), the butt joint pipe (212) and the sleeve pipe (26) are locked and fixed through a pipe hoop (27), the three-way pipe (22) is connected with a branch pipe at one side of the sleeve pipe (26) and the butt joint pipe (212) and is respectively provided with a first liquid stop valve (24) and a second liquid stop valve (25).

2. An endotoxin sampler as claimed in claim 1 wherein the liquid outlet tube of the needle tube (210) is threaded and the bottom of the needle tube (210) is connected with a sealing head (211) by the thread.

3. The endotoxin sampler of claim 1, wherein a sealing sleeve is fixed on the inner circumferential surface of the sleeve pipe (26), and the sealing sleeve is sleeved on the outer circumferential surface of the butt joint pipe (212).

4. A hemodialysis machine, comprising the endotoxin sampler of any one of claims 1-3, further comprising an air-trap (14), a dialyzer (15) and a blood pump (16), wherein the output end of the dialyzer (15) is connected with a blood return pipe (12) for returning to a human body, the air-trap (14) is installed on the blood return pipe (12), the output end of the blood pump (16) is connected with the output end of the dialyzer (15) through a liquid conveying pipe (18), the input end of the blood pump (16) is connected with a blood output pipe (13), and an arterial pressure gauge (11) is installed on the blood output pipe (13).

5. A hemodialysis machine according to claim 4, wherein the infusion tube (18) is provided with a heparin pump (17), the infusion tube (18) is further connected with an external physiological saline bag through the infusion tube, and the infusion tube (18) is further provided with an inflow pressure gauge (19).

6. A hemodialysis machine according to claim 4, wherein the dialysate input end of the dialyzer (15) is connected to a dialysate tank (111) through a dialysate input pipe (110), the dialysate output end of the dialyzer (15) is connected to a dialysate recovery tank (112) through a dialysate return pipe (113), and the endotoxin sampler is installed on the dialysate return pipe (113).

7. A hemodialysis machine according to claim 4, wherein the blood return tube (12) is further installed with a venous pressure gauge and an air monitor.