Dialysate sampling device of hemodialysis machine

Abstract

The utility model discloses a dialysate sampling device of a hemodialysis machine, and particularly relates to the field of hemodialysis, the top of a glass tube is in threaded connection with a sealing layer, the middle position inside the sealing layer is filled with a sealant layer, and the sealant layer is composed of sealants with four sides expanding mutually. A two-way needle penetrates into a dialysate storage device, then a protection barrel is pushed upwards, a collection device is driven to move upwards till a needle at the lower end of the two-way needle penetrates into sealant, and meanwhile a spring is compressed; the two-way needle head forms a connecting pipeline between the collecting device and the dialysate storage device, and the interior of the collecting device is in a negative pressure state, so that dialysate in the dialysate storage device flows to the glass tube, and the effect of collecting the dialysate is achieved. Then the thrust on the protective cylinder is removed, the spring rebounds to enable the needle head below the bidirectional needle head to be separated from the interior of the collection device, and then the sealant expands to continue to form sealing, so that the dialysate is prevented from being polluted during collection.

Description

Technical Field

[0001] The utility model relates to the technical field of hemodialysis, in particular to a dialysate sampling device for a hemodialysis machine. Background Art

[0002] Hemodialysis, clinically, means that some waste products in the blood are removed through a semi-permeable membrane. Hemodialysis is one of the safer, easier and more widely used blood purification methods. Dialysate is the basis of all blood purification. When the dialysis fluid does not meet the standard, it may cause very serious harm to the patient. Strict aseptic techniques must be implemented during the sampling process to avoid contamination of the dialysis fluid. The sample must reflect the true condition of the dialysis fluid.

[0003] According to the requirements of the "2012 Standard Purification Operating Procedures", the dialysate needs to be tested for bacteria once a month to ensure dialysis safety.

[0004] When sampling and collecting dialysate, bacteria or other substances often attach to the surface of the collection device, causing the collected dialysate sample to be contaminated, thereby affecting the detection effect of the dialysate. Therefore, those skilled in the art provide a dialysate sampling device for a hemodialysis machine to solve the problems raised in the above background technology. Utility Model Content

[0005] The utility model aims to provide a dialysate sampling device for a hemodialysis machine, which is not easy to contaminate the collected samples.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A dialysate sampling device for a hemodialysis machine comprises a protective tube, a collecting device is installed inside the protective tube, the collecting device comprises a glass tube in a negative pressure state, a sealing layer is threadedly connected to the top of the glass tube, a sealing layer is filled in the middle position inside the sealing layer, and the sealing layer is composed of sealants that expand mutually on four sides.

[0008] As a further solution of the utility model: the sealant layer is made of sterile silicone material to prevent bacteria from entering.

[0009] As a further solution of the utility model: a support layer for positioning the collection device is installed on the inner bottom side of the protection tube.

[0010] As a further solution of the utility model: the sealing layer is made of rubber material.

[0011] As a further solution of the utility model: an annular groove is provided on the top of the protective tube, a group of springs are installed inside the annular groove, a support ring is fixedly connected to the top of the spring, a liquid collection cover is installed on one side of the support ring, and a bidirectional needle is fixedly connected to one side of the liquid collection cover.

[0012] As a further solution of the utility model: a thread groove is provided on the outer side of the support ring, and a thread protrusion is fixedly connected to the inside of the liquid collection cover, and the thread protrusion is matched with the thread groove.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The dialysate sampling device of the hemodialysis machine is configured by inserting the upper part of the bidirectional needle into the dialysate storage device, and then pushing the protective cylinder upward. When the surface of the liquid collection cover contacts the surface of the dialysate storage device, the protective cylinder drives the collection device to move upward and gradually approach the lower end of the bidirectional needle, and the spring is compressed at the same time; until the lower end of the bidirectional needle is inserted into the sealant, the sealant squeezes the needle to seal it, so that the bidirectional needle forms a connecting pipe between the collection device and the dialysate storage device. Since the inside of the collection device is in a negative pressure state, the dialysate inside the dialysate storage device will flow to the glass tube, thereby achieving the effect of dialysate collection. Then the thrust on the protective cylinder is removed, and the spring rebound drives the protective cylinder to move downward, so that the lower needle of the bidirectional needle is separated from the inside of the collection device, and then the sealant expands to continue to form a seal, thereby preventing the dialysate from being contaminated during collection.

[0015] In addition, the dialysate sampling device of the hemodialysis machine has a sealant composed of four parts that are mirror-symmetrical in front, back, left, and right, so that a gap is formed in the middle of the sealant. The gap is used for the needle to enter. In the initial state, the gap is sealed by the expanded sealant, thereby preventing bacteria or microorganisms from entering the collection device. When in use, first connect the needle through the output end of the vacuum device, and then insert the needle into the middle position of the sealant. The sealant squeezes the needle to form a seal, and the collection device is pumped into a negative pressure state. After the needle is pulled out, the sealant expands to seal the gap. This facilitates the sealing of the collection device and the extraction of the negative pressure state. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the overall structure of a dialysate sampling device of a hemodialysis machine;

[0017] Figure 2 It is a three-dimensional schematic diagram of the overall structure section of a dialysate sampling device of a hemodialysis machine;

[0018] Figure 3 It is a schematic diagram of the front view and cross-sectional structure of the overall structure of a dialysate sampling device of a hemodialysis machine;

[0019] Figure 4 It is a schematic diagram of a top-down cross-sectional structure of a protective tube in a dialysate sampling device of a hemodialysis machine;

[0020] In the figure: 10, protective tube; 11, supporting layer; 20, collecting device; 201, glass tube; 202, sealing layer; 203, sealing rubber layer; 30, annular groove; 31, spring; 32, supporting ring; 33, threaded groove; 34, liquid collection cover; 35, threaded protrusion; 36, bidirectional needle. DETAILED DESCRIPTION

[0021] like Figure 2 , 3 As shown, a dialysate sampling device for a hemodialysis machine includes a protective tube 10, the interior of the protective tube 10 is hollow and the top is open, a support layer 11 is fixedly connected to the inner bottom side of the protective tube 10, and a collection device 20 is placed inside the support layer 11.

[0022] Preferably, the support layer 11 is adapted to the shape of the bottom surface of the collection device 20 and is relatively elastic. When the collection device 20 is inserted into the support layer 11, it is convenient to position the collection device 20 inside the protective tube 10 and protect the collection device 20.

[0023] refer to Figure 2 , 3 The collecting device 20 includes a glass tube 201 , a sealing layer 202 is threadedly connected to the top of the glass tube 201 , and a sealing glue layer 203 is filled in the middle of the sealing layer 202 .

[0024] Preferably, the sealing layer 202 is made of rubber material. After the sealing layer 202 is threadedly connected to the glass tube 201, microorganisms or bacteria can be prevented from entering the interior of the glass tube 201. At the same time, the sealing layer 202 can be easily removed and replaced, thereby facilitating the cleaning of the interior of the glass tube 201 for continued use next time.

[0025] Preferably, reference Figure 4 The sealant layer 203 is made of sterile silicone. The sealant layer 203 is composed of sealants that expand mutually on the four sides of the front, back, left and right sides, so that a gap is formed in the middle of the sealant layer 203. The gap is used for the needle to enter. In the initial state, the gap is sealed by the expanded sealant, thereby preventing bacteria or microorganisms from entering the collection device 20. When in use, the needle is first connected through the output end of the vacuum device, and then the needle is inserted into the middle position of the sealant layer 203. The sealant layer 203 squeezes the needle to form a seal, and the collection device 20 is pumped into a negative pressure state. Then, after the needle is pulled out, the sealant expands to seal the gap.

[0026] refer to Figure 1-4The top of the protection tube 10 is provided with an annular groove 30, a group of springs 31 are installed inside the annular groove 30, a support ring 32 is fixedly connected to the top of the spring 31, and a threaded groove 33 is provided on the outer top of the support ring 32; a liquid collection cover 34 is installed on the top of the support ring 32, a threaded protrusion 35 is fixedly connected to the bottom of the liquid collection cover 34, and the threaded protrusion 35 is adapted to the threaded groove 33. When in use, the liquid collection cover 34 is threadedly connected to the threaded protrusion 35, so as to achieve the fixation of the liquid collection cover 34 on the support ring 32. A bidirectional needle 36 is fixedly connected to the middle position of the liquid collection cover 34.

[0027] Preferably, the liquid collection cover 34 and the support ring 32 are fixed by threaded connection, so as to facilitate the disinfection and replacement of the liquid collection cover 34 and the removal and placement of the collection device 20.

[0028] The working principle of the utility model is as follows: when in use, the upper part of the two-way needle 36 is inserted into the dialysate storage device, and then the protective cylinder 10 is pushed upward. When the surface of the liquid collection cover 34 contacts the surface of the dialysate storage device, the protective cylinder 10 drives the collection device 20 to move upward and gradually approach the lower end of the two-way needle 36. At the same time, the spring head is squeezed to seal, so that the two-way needle 36 forms a connecting pipeline between the collection device 20 and the dialysate storage device. Since the inside of the collection device 20 is in a negative pressure state, the dialysate inside the dialysate storage device will flow to the glass tube 201, thereby achieving the effect of dialysate collection. Then the thrust on the protective cylinder 10 is removed, and the spring 31 rebounds and drives the protective cylinder 10 to move downward, so that the lower needle head of the two-way needle 36 is separated from the inside of the collection device 20, and then the sealant layer 203 will expand and continue to form a seal, thereby preventing the dialysate from being contaminated during collection.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A dialysate sampling device for a hemodialysis machine, comprising a protective tube (10), wherein a collection device (20) is installed inside the protective tube (10), characterized in that: The collecting device (20) comprises a glass tube ((201)) in a negative pressure state, the top of the glass tube ((201)) is threadedly connected with a sealing layer (202), the inner middle position of the sealing layer (202) is filled with a sealing glue layer (203), and the sealing glue layer (203) is composed of sealing glue that expands mutually on four sides.

2. The dialysate sampling device for a hemodialysis machine according to claim 1, characterized in that: The sealant layer (203) is made of sterile silica gel material that prevents bacteria from entering.

3. The dialysate sampling device for a hemodialysis machine according to claim 1, characterized in that: A support layer (11) for positioning a collection device (20) is installed on the inner bottom side of the protection tube (10).

4. The dialysate sampling device for a hemodialysis machine according to claim 1, characterized in that: The sealing layer (202) is made of rubber.

5. The dialysate sampling device for a hemodialysis machine according to claim 1, characterized in that: The top of the protective tube (10) is provided with an annular groove (30), a group of springs (31) are installed inside the annular groove (30), the top of the spring (31) is fixedly connected to a support ring (32), one side of the support ring (32) is installed with a liquid collection cover (34), and one side of the liquid collection cover (34) is fixedly connected to a bidirectional needle (36).

6. The dialysate sampling device for a hemodialysis machine according to claim 5, characterized in that: A thread groove (33) is formed on the outer side of the support ring (32), and a thread protrusion (35) is fixedly connected to the inside of the liquid collection cover (34), wherein the thread protrusion (35) is matched with the thread groove (33).

Images