CN216294048U

CN216294048U - Dialysis pipeline blood sampling device

Info

Publication number: CN216294048U
Application number: CN202122239928.3U
Authority: CN
Inventors: 孙荣秀
Original assignee: First Hospital of Jiaxing
Current assignee: First Hospital of Jiaxing
Priority date: 2021-09-14
Filing date: 2021-09-14
Publication date: 2022-04-15
Anticipated expiration: 2031-09-14

Abstract

The utility model discloses a dialysis pipeline blood sampling device which comprises a needle cylinder, a blood sampling joint and a blood sampling pipeline, wherein the blood sampling joint is fixedly connected to the blood sampling pipeline, the needle cylinder and the blood sampling joint are mutually matched to collect blood in the blood sampling pipeline, the blood sampling joint comprises a shell, a protruding part used for enabling the needle cylinder to be inserted into the blood sampling joint to draw blood is arranged on the outer surface of the shell, a one-way valve is fixedly connected in the inner space of the shell, a blocking mechanism is connected between the protruding part and the inner cavity of the one-way valve, and the blocking mechanism is used for controlling the conduction or the sealing of the inner cavity of the one-way valve and the outside. When the blood sampling device is used for sampling blood, a blood sampling needle does not need to be installed on the needle cylinder, the blood can be sampled by connecting the latex head of the needle cylinder with the blood sampling joint, and the blood is circulated in the device in a single way, so that the blood cannot flow out of the blood sampling joint under the condition of not sampling blood, the blood sampling device is convenient and practical, has a simple structure and lower cost, and can bring convenience to doctors.

Description

Dialysis pipeline blood sampling device

Technical Field

The utility model relates to the field of medical instruments, in particular to a dialysis pipeline blood sampling device.

Background

Hemodialysis, clinical, means that some of the waste products in the blood are removed by a semi-permeable membrane. Hemodialysis is one of the safer, easy-to-use and widely-applied blood purification methods. Dialysis refers to the movement of solutes from a highly concentrated solution to a less concentrated solution through a semi-permeable membrane. Hemodialysis involves the movement of solutes and the movement of water, i.e., the exchange of substances between blood and dialysate in a dialyzer (artificial kidney) by means of semipermeable membrane contact and concentration gradients, causing metabolic wastes and excess electrolytes in the blood to move towards the dialysate, and calcium ions, bases, etc. in the dialysate to move towards the blood. If the mixed liquid of albumin and urea is put into a dialyzer and the outside of the dialyzer is soaked by water, the urea in the dialyzer tube can move to the water outside the dialyzer tube through the artificial kidney membrane pores, and albumin molecules are large and cannot pass through the membrane pores. The phenomenon of substance movement in which small molecular substances can pass through but large molecular substances cannot pass through a semipermeable membrane is called diffusion. The basic principle of hemodialysis is the method of clinically separating and purifying blood by diffusion phenomenon to achieve the purpose of purification.

Blood taking needles are needed in the blood taking places of the existing hemodialysis pipelines, and due to the use of the blood taking needles, needle stick injuries are easy to occur, and the patients are injured; in addition, in hemodialysis, patients with hepatitis B, syphilis and AIDS (acquired immune deficiency syndrome) who are specially suffered from diseases are suffered from, the diseases are generally transmitted through blood, and if a needle stick injury is caused by a blood taking needle, the disease transmission is caused, and the consequences are very serious.

Therefore, the dialysis machine pipeline blood sampling device provided by the utility model can be used for collecting blood in a blood sampling pipeline for testing and detection only by connecting the latex head of the needle cylinder with the blood sampling joint without using a blood sampling needle, and the blood is in one-way circulation in the device, so that the blood cannot be left from the blood sampling joint under the condition of not sampling blood, and the device is convenient and practical and has a simple structure.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a dialysis pipeline blood sampling device.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a dialysis pipeline blood sampling device, includes cylinder, blood sampling joint and blood sampling pipeline, the blood sampling connects fixed connection on the blood sampling pipeline, the cylinder with the blood sampling connects the interact of mutually supporting to gather blood in the blood sampling pipeline, the blood sampling connects including the casing, be provided with on the casing surface and be used for making the cylinder inserts the bulge that the blood sampling connects the blood of drawing blood, fixedly connected with check valve in the inner space of casing, the bulge with be connected with blocking mechanism between the inside cavity of check valve, blocking mechanism is used for control the inside cavity of check valve switches on or seals with external.

On the basis of the above scheme and as a preferable scheme of the scheme: the check valve comprises a first joint and a second joint, the first joint and the second joint are communicated with the blood sampling pipeline, a diaphragm and a V-shaped limiting rod body are arranged in an inner cavity of the check valve, the diaphragm is limited by the inner wall of the first joint and the V-shaped limiting rod body together, a large opening end of the V-shaped limiting rod body faces the second joint, and the diaphragm is placed at a small opening end of the V-shaped limiting rod body.

On the basis of the above scheme and as a preferable scheme of the scheme: the blocking mechanism comprises a blocking piece arranged at the joint of the protruding portion and the inner cavity of the one-way valve, a spring is installed on one surface, facing the inner cavity of the one-way valve, of the blocking piece, and the other end of the spring is fixedly connected with the supporting plate.

On the basis of the above scheme and as a preferable scheme of the scheme: a plurality of through holes are formed in the V-shaped limiting rod body.

On the basis of the above scheme and as a preferable scheme of the scheme: the first joint and the second joint are made of PVC materials, and the membrane is made of medical rubber.

The utility model has the following beneficial effects:

(1) the probability of acupuncture injury is reduced, the injury to the patient is avoided, and the patient is not painful any more by acupuncture.

(2) Reducing occupational exposure to specific infectious diseases and preventing infection of diseases via blood transmission.

(3) The cost of the department for taking the blood taking needle is reduced, the blood can be taken without the blood taking needle, and the blood taking device is convenient and practical.

(4) The blood gas analysis is carried out for critical patients' blood sampling and provides convenience, and the device is also suitable for CRRT dialysis pipelines.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the check valve of the present invention;

Detailed Description

In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments, however, the specific embodiments and embodiments described below are only for illustrative purposes and are not intended to limit the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

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 at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1 to 2 of the drawings, the blood sampling device for dialysis pipeline in this embodiment includes a needle cylinder, a blood sampling connector 10 and a blood sampling pipeline 20, the blood sampling connector 1 is fixedly connected to the blood sampling pipeline 20, the needle cylinder and the blood sampling connector 10 cooperate to collect blood in the blood sampling pipeline 20, the blood sampling connector 10 includes a housing 11, a protrusion 110 for inserting the needle cylinder into the blood sampling connector 10 to draw blood is disposed on an outer surface of the housing 11, a check valve 30 is fixedly connected to an inner space of the housing 11, a blocking mechanism is connected between the protrusion 110 and an inner cavity of the check valve 30, and the blocking mechanism is used for controlling the conduction or the closure of the inner cavity of the check valve 30 and the outside. It is worth mentioning that the protrusion 110 is a hollow cylinder structure, a blood taking needle is not required to be installed on the needle cylinder, when blood taking is required, the latex head of the needle cylinder is inserted into the inner cavity of the protrusion 110, the blocking mechanism is pushed, the inner cavity of the check valve 30 is communicated with the latex head opening of the needle cylinder, and then the needle cylinder is pumped to collect blood in the pipeline.

Preferably, the check valve 30 comprises a first connector 31 and a second connector 32, both the first connector 31 and the second connector 32 are communicated with the blood collection pipeline 20, a diaphragm 40 and a V-shaped limiting rod body 41 are arranged in an inner cavity of the check valve 30, the first connector 31 and the second connector 3 are made of PVC material in the embodiment, and the diaphragm 40 is made of medical rubber, so as to avoid blood pollution; the inner wall of the first joint 31 and the V-shaped limiting rod 41 limit together, the large opening end of the V-shaped limiting rod 41 faces the second joint 32, and the diaphragm 40 is placed at the small opening end of the V-shaped limiting rod 41. In fact, the inner cavity of the check valve 30 is formed by fixing the first joint 3 and the second joint 32, the large opening end of the V-shaped limiting rod body 41 comprises an upper end and a lower end, the upper end is fixedly connected with the baffle 50 of the blocking mechanism, and the lower end is fixedly connected with the supporting plate 51; when liquid flows from the first connector 31 to the second connector 32, the middle part of the membrane 40 is tightly attached to the small opening end of the V-shaped limiting rod body 41, and under the impact of blood on the edge of the membrane 40, a gap is generated between the edge of the membrane 40 and the inner wall of the first connector 31, so that the blood smoothly passes through the gap and flows into the second connector 32 through the through hole 410 arranged on the V-shaped limiting rod body 41; when the reverse flow occurs, the edge of the membrane 40 will be tightly attached to the inner wall of the first connector 31 due to the pressure of the blood, so as to block the reverse flow of the blood, thereby achieving the effect of realizing the unidirectional flow of the blood.

Further preferably, the blocking mechanism comprises a baffle 50 disposed at the connection of the protrusion 110 and the inner cavity of the check valve 30, a spring 52 is mounted on a surface of the baffle 50 facing the inner cavity of the check valve, and the other end of the spring 52 is fixedly connected to the supporting plate 51. When using the cylinder to take a blood sample, the first end of latex of cylinder pushes down separation blade 50, the inside cavity intercommunication of bulge 110 and check valve 30, blood alright flow out from the junction of bulge 110 and the inside cavity of check valve 30, alright carry out the blood sampling operation this moment, after the blood sampling finishes, loosen the cylinder, separation blade 50 under the effect of spring 51 elastic force alright kick-back, seal the inside cavity junction of bulge 110 and check valve 30 again, thereby reach the purpose that the realization need not the blood sampling needle and carry out the blood sampling.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered by the protection scope of the utility model.

Claims

1. The utility model provides a dialysis pipeline blood sampling device, includes cylinder, blood sampling joint and blood sampling pipeline, blood sampling joint fixed connection is on the blood sampling pipeline, the cylinder with blood sampling joint mutually supports the effect and gathers blood in the blood sampling pipeline, its characterized in that: the blood sampling joint comprises a shell, a protruding part used for enabling the needle cylinder to be inserted into the blood sampling joint for blood sampling is arranged on the outer surface of the shell, a one-way valve is fixedly connected in the inner space of the shell, a blocking mechanism is connected between the protruding part and the inner cavity of the one-way valve, and the blocking mechanism is used for controlling the conduction or the sealing between the inner cavity of the one-way valve and the outside.

2. A dialysis line lancing device according to claim 1, wherein: the check valve comprises a first joint and a second joint, the first joint and the second joint are communicated with the blood sampling pipeline, a diaphragm and a V-shaped limiting rod body are arranged in an inner cavity of the check valve, the diaphragm is limited by the inner wall of the first joint and the V-shaped limiting rod body together, a large opening end of the V-shaped limiting rod body faces the second joint, and the diaphragm is placed at a small opening end of the V-shaped limiting rod body.

3. A dialysis line lancing device according to claim 2, wherein: the blocking mechanism comprises a blocking piece arranged at the joint of the protruding portion and the inner cavity of the one-way valve, a spring is installed on one surface, facing the inner cavity of the one-way valve, of the blocking piece, and the other end of the spring is fixedly connected with the supporting plate.

4. A dialysis line lancing device according to claim 3, wherein: the large opening end of the V-shaped limiting rod body comprises an upper end portion and a lower end portion, the upper end portion is fixedly connected with the blocking piece, and the lower end portion is fixedly connected with the supporting plate.

5. A dialysis line lancing device according to claim 4, wherein: a plurality of through holes are formed in the V-shaped limiting rod body.

6. A dialysis line lancing device according to claim 2, wherein: the first joint and the second joint are made of PVC materials, and the membrane is made of medical rubber.