KR101814552B1 - Obtaining system of artery blood - Google Patents

Abstract

The present invention relates to a system of obtaining arterial blood. The system includes a catheter part puncturing an arterial blood vessel; a backflow prevention part which is a tubular tube extended from the catheter part and has a valve to prevent the backflow of blood; a fixed fastening part for fastening and tightening the tube of the backflow prevention part by forward pressurization; and a line connection part extended from the fixed connection part and connected to a pressure line for arterial blood pressure measurement. The present invention can prevent the leakage of arterial blood due to backflow during the connection of the catheter part and the pressure line, facilitate fastening and confirmation, and minimize the backflow of blood.

Description

{OBTAINING SYSTEM OF ARTERY BLOOD}

The present invention relates to an arterial blood collection system, and more particularly, to an arterial blood collection system capable of preventing blood flow, facilitating fastening and confirmation, and minimizing blood backflow.

Generally, when a medical diagnosis is performed, a blood sample is taken from a patient, and blood gas analysis, blood cell count or electrolytic value of the patient are checked on the basis of the collected blood sample. In this case, It can be done through blood sampling such as venous and arterial blood, which is one of the basic procedures for collecting blood samples.

FIG. 1 is a photograph showing an example of arterial blood collection by a conventional catheter puncture. FIG. 2 and FIG. 3 are photographs showing an example of a method of fixing a catheter in an arterial blood sampling device for harvesting arterial blood.

Generally, an arterial blood sampling device is composed of a catheter that punctures an arterial blood vessel, a harvesting portion that harvests arterial blood, and a pressure line that measures an arterial blood pressure. As shown in FIG. 1, arterial puncture through a catheter is a difficult medical procedure that requires considerable skill in comparison with a venous puncture. In connection with the catheter and the pressure line, blood pressure is high due to high pressure of the arterial blood, There is a problem that occurs.

As shown in Fig. 2, in order to connect the catheter and the pressure line, the structure of the connection portion is rotated and inserted and fixed, which is time consuming. In other words, it is very difficult and time-consuming to press the artery to prevent blood reflux with one hand and rotate the connection with the other hand when using the arterial puncture alone. This is very difficult and time consuming, So that a wound due to compression can be generated.

Further, as shown in Fig. 3, although a catheter of an existing arterial blood sampling device is stably fixed and a transparent cover is attached for protection after fixation, there is still a problem that a method of rotating and fixing the catheter and the pressure line is still required .

That is, the conventional arterial blood sampling device can not confirm continuous arterial blood during the irrigation of the sample and the line for analyzing the blood gas, and there is a problem that the blood is refluxed when the pressure line and the catheter are connected, It is difficult and time-consuming, and it is not easy to confirm whether or not the connection is correct.

Korean Patent Publication No. 10-2010-0022256 (Published Date: March 02, 2010) Korean Registered Patent No. 10-1563960 (Registration date: October 22, 2015)

The arterial blood collection system according to the present invention has the following problems.

First, the present invention is to provide an arterial blood collection system for preventing arterial blood leakage due to backflow during connection of a catheter unit and a pressure line.

Second, the present invention aims to provide an arterial blood collection system that facilitates fastening and confirmation of the catheter unit and the pressure line, and minimizes the backflow of blood.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide an apparatus and method for controlling the same.

According to a first aspect of the present invention, there is provided an arterial blood collection system comprising: a catheter unit puncturing an arterial blood vessel; A tubular tube extending from the catheter part, the backflow preventing part having a valve to prevent backflow of blood; A fixed fastening part for fastening and tightening the tube with the tube of the backflow preventing part by forward pressing; And a line connection portion extending from the fixed connection portion and connected to a pressure line for arterial blood pressure measurement.

Here, the catheter unit includes: a needle puncturing the arterial blood; And a hub that is wrapped around the needle tip, and the backflow prevention portion is a tubular tube extending from the catheter portion and extending from the inner side of the hollow portion to the center, It is preferable to provide a valve composed of a plurality of blocking blades.

Preferably, the blocking blades are arranged symmetrically with respect to the center, spaced apart from each other around a circular periphery of the inner end surface of the tube, and smaller and smaller in area and thickness toward the center, It is preferable that the vertical sectional area of the hollow portion is widened.

The fixed fastening portion may include a cylindrical housing; A front end fastening portion located at an inner front surface of the housing and connected to the backflow preventing portion by a blood flow tube; A rear end fastening portion located at an inner rear side of the housing and connected to the line connection portion; And a spring connecting the rear end blood flow tube of the front end fastening part and the shear blood flow tube of the rear end fastening part. Preferably, the rear end fastening part is forwardly pressed and fastened to the front end fastening part.

According to a second aspect of the present invention, there is provided an arterial blood collection system comprising: a catheter part puncturing an arterial blood vessel; A tubular tube extending from the catheter part, the backflow preventing part having a valve to prevent backflow of blood; A fixed fastening part for fastening and tightening the tube with the tube of the backflow preventing part by forward pressing; A line connection portion extending from the fixed fastening portion and connected to a pressure line for arterial blood pressure measurement; And a blood collecting part mounted at a side of the line connecting part adjacent to the fixed fastening part and collecting blood through hydraulic pressure.

Preferably, the backflow prevention portion is a tubular tube extending from the catheter portion. The backflow prevention portion is provided with a valve composed of a plurality of blocking blades, which are separated from each other at the inner side of the hollow portion and extend to the center, , It is preferable that the blocking blades extend symmetrically to the center, spaced from each other around the circular periphery of the inner cross section of the tube, and the area and thickness become smaller toward the center.

Preferably, the backflow prevention portion has a vertical cross-sectional area of the inner hollow portion widened in a direction extending from the catheter portion, and the fixed fastening portion includes a cylindrical housing; A front end fastening portion located at an inner front surface of the housing and connected to the backflow preventing portion by a blood flow tube; A rear end fastening portion located at an inner rear side of the housing and connected to the line connection portion; And a spring connecting the rear end blood flow tube of the front end fastening part and the shear blood flow tube of the rear end fastening part. Preferably, the rear end fastening part is forwardly pressed and fastened to the front end fastening part.

In addition, it is preferable that the blood collecting part is provided with a blood flow tube that moves the blood across the center in the form of a disk and is connected to the through hole on the side of the line connecting part, and a check valve for controlling the blood flow is installed in the blood flow tube desirable.

A third aspect of the present invention is summarized as an arterial blood collection system comprising: a catheter unit for puncturing an arterial blood vessel; A tubular tube extending from the catheter part, the backflow preventing part having a valve to prevent backflow of blood; A fixed fastening part for fastening and tightening the tube with the tube of the backflow preventing part by forward pressing; A line connection part connected to the fixed connection part and a pressure line extending to measure arterial blood pressure; A blood collecting part mounted on a side of the line connecting part adjacent to the fixed fastening part and collecting blood through hydraulic pressure; And a blood gas analyzer for analyzing the blood gas by collecting the blood gas in connection with the blood sampling unit.

The arterial blood collection system according to the present invention has the following effects.

First, the present invention provides an arterial blood collection system that includes a backflow prevention part having a valve structure when the catheter part and the pressure line are connected to prevent blood leakage due to backflow of arterial blood.

Second, the present invention provides an arterial blood collection system which has a fastening structure for pressing and fastening the catheter part and the pressure line at one time by pressing forward to facilitate confirmation of the fastening and minimize backflow of blood.

Third, the present invention provides a system capable of analyzing blood and blood gas by rapidly collecting blood without generating blood coagulation without irrigation and having a blood collecting part with a check valve structure on the proximal side of the catheter to provide.

The effects of the present invention are not limited to those mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the following description.

1 is a photograph showing an example of arterial blood collection by a conventional catheter puncture.
FIGS. 2 and 3 are photographs showing an example of a method of fixing a catheter in an arterial blood collection device for harvesting arterial blood.
4 is a side cross-sectional view illustrating the configuration of an arterial blood collection system according to an embodiment of the present invention.
5 is a vertical cross-sectional view of a backflow prevention portion according to an embodiment of the present invention.
6 is a view showing an example of a side cross-section and a valve configuration of the check valve according to the embodiment of the present invention.
7 is a perspective view illustrating a structure of a fastening part applied to an arterial blood collection system according to an embodiment of the present invention.
FIG. 8 and FIG. 9 are views showing the configuration of a blood sampling part of an arterial blood collection system according to still another embodiment of the present invention.
10 is a schematic diagram illustrating a blood sampling use of the blood sampling unit according to the embodiment of the present invention.
11 is a connection sectional view of a backflow preventing part and a fastening part of a blood sampling system according to an embodiment of the present invention.
12 is a sectional view showing the perforated line of FIG.

Further objects, features and advantages of the present invention will become more apparent from the following detailed description and the accompanying drawings.

Before describing the present invention in detail, it is to be understood that the present invention is capable of various modifications and various embodiments, and the examples described below and illustrated in the drawings are intended to limit the invention to specific embodiments It is to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Further, terms such as " part, "" unit," " module, "and the like described in the specification may mean a unit for processing at least one function or operation.

In the following description of the present invention with reference to the accompanying drawings, the same components are denoted by the same reference numerals regardless of the reference numerals, and redundant explanations thereof will be omitted. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

4 is a side cross-sectional view illustrating the configuration of an arterial blood collection system according to an embodiment of the present invention. As shown in FIG. 4, the arterial blood collection system according to the embodiment of the present invention includes a catheter unit 100 that punctures an arterial blood vessel; A tubular tube extending from the catheter unit 100 and having a valve to prevent backflow of blood; A fixed fastening part 300 for fastening and tightening the tube with the tube of the backflow prevention part 200 by forward pressing; And a line connection part 400 connected to the fixed connection part 300 and a pressure line for measuring arterial blood pressure.

As described above, according to the embodiment of the present invention, the tubular backflow prevention part 200 provided with the valve is attached to the catheter part 100 to prevent the blood flow due to the reverse flow when connecting the pressure line, The present invention provides an arterial blood collection system which is very easy and quick to connect and minimizes leakage due to blood backflow by providing a fastening part 300 to be fixed to the catheter part 100.

The catheter unit 100 includes a needle 110 for puncturing the blood vessel and a hub 130 for fixing the needle 110 and fastening the needle 110 to the fastening unit 300. The catheter unit 100 includes a needle 110 punctured with arterial blood and a hub 130 wrapped around the distal end of the needle 110.

The backflow prevention part 200 is a tubular tube extending from the catheter part 100 and has a valve to prevent backflow of blood. FIG. 5 is a vertical sectional view of the backflow prevention part 200, and FIG. 6 is a view showing an example of a side end surface and a valve configuration of the backflow prevention part 200.

4, the backflow prevention portion 200 is a tubular tube that is attached to the rear end of the hub 130 and has a tapered shape in which the vertical cross-sectional area of the inner hollow portion is widened in the direction extending from the catheter portion 100 desirable. The present invention provides a structure for selectively collecting blood by forming a structure for increasing the cross-sectional area in the moving direction to smooth the movement of the blood for blood collection and providing a valve therein to prevent backflow.

5, the backflow prevention part 200 applied to the arterial blood collection system according to the embodiment of the present invention is formed to extend from the inner side of the hollow part to the center, And a plurality of blocking blades (215) for limiting the flow of the fluid.

The structure in which a plurality of blocking blades 215 are formed along the inner circumferential periphery as described above is a valve structure that blocks or restricts the flow of blood that flows backward. When external air is introduced through the syringe, the wing portion is turned or bent, It is possible to form a selective valve structure capable of smoothly performing the operation.

In other words, the valve structure used in the backflow prevention part 200 is formed such that a plurality of blocking blades 215 are spaced apart along the inner circumference of the tube, the blocking blades 215 are disposed symmetrically with respect to the center, As shown in FIG. This is because the blood flow is dense at the central portion and leads to flow, which can reduce the resistance by the blocking blade 215.

The valve structure applied to the backflow prevention portion 200 may include a hinge 213 and a blocking blade 215 to form a structure in which the blocking blade 215 is rotated in accordance with the hydraulic pressure, It is also possible to use the same elastic material so as to bend naturally according to the hydraulic pressure.

6, the catheter unit 100 is inserted into the arterial blood vessel before the connection to the pressure line, and the catheter unit 100 is inserted into the arterial blood vessel When the blocking blade 215 is bent or pivoted toward the catheter unit 100, the flow of the arterial blood is blocked as much as possible to prevent leakage, and the syringe is connected to form an external air pressure When the blood is collected, the blocking blade 215 is rotated or bent in the blood flow direction due to the external air pressure, so that the flow of blood flows smoothly, thereby facilitating blood collection.

As described above, the blocking blades 215 of the backflow prevention part 200 can be rotated through the hinge 213 and can be made of an elastic material such as silicone or rubber and bent according to the hydraulic pressure to control the blood flow It is possible.

As another component of the arterial blood collection system according to the embodiment of the present invention, the fixed fastening part 300 is mounted at the rear end of the above-described backflow prevention part 200, As shown in Fig.

7 is a perspective view illustrating a structure of a fastening part 300 applied to an arterial blood collection system according to an embodiment of the present invention. 7, the fixed fastening part 300 includes a cylindrical housing; A front end fastening part 330 positioned at an inner front surface of the housing and connected to the backflow prevention part 200 through a blood flow tube; A rear end coupling part 370 located on the inner rear side of the housing and connected to the line connection part 400; And a spring 350 connecting the rear end blood flow tube of the front end fastening part 330 and the shear blood flow tube of the rear end fastening part 370. The forward end fastening part 370 is formed by forwardly pressing the rear end fastening part 370, (330).

As described above, in the conventional arterial blood sampling device, since the connecting portion between the pressure line and the catheter is a threaded fastening structure, the catheter is fixed and rotated, so that the fastening process is difficult and time consuming . Therefore, in the embodiment of the present invention, a spring 350 is used to provide a structure that can be fastened and fixed at one time by simply pressing forward.

7, the fixed fastening part 300 includes a cylindrical housing, a shear fastening part 330, a spring 350 and a rear fastening part 370 inserted into the housing, and the shear fastening part 330 330 and the rear end fastening portion 370 are spaced apart from each other by the spring 350, the rear end fastening portion 370 is pressed and fixed to the catheter portion 100 by pushing forward.

Here, the shear fastening part 330 and the rear end fastening part 370 form a tube or a tube through which blood can flow, and a hollow tube of the shear fastening part 330 is fastened and fixed to the rear end of the backflow prevention part 200 Structure. In this state, the pressure line is connected to the rear end of the fastening part 300. When the rear end fastening part 370 is advanced and pressed, the spring 350 is compressed and the front end fastening part 330 and the rear end fastening part 370 Are connected to each other to form a structure in which blood flow tubes are connected to each other.

It is possible to easily connect the pressure line by simple forward pressing and also to perform fastening and fixing work quickly and stably. Further, since the rear end fastening portion 370 is forwardly pressed and docked to the front end fastening portion 330, the fastening portion 370 is provided with a fastening structure or a knock lock on the inner side so that it can be easily fixed, It has the advantage of being able to confirm the exact fastening and fixing easily through vibration or sound.

7, the rear end fastening portion 370 of the fastening fastening portion 300 may be bent to allow the user to grip the fastening fastening portion 300 with ease by hand, to increase the grip feeling and to transmit the force efficiently, It is preferable to use an elastic material.

Another embodiment of the present invention is an arterial blood collection system comprising: a catheter part (100) puncturing an arterial blood vessel; A tubular tube extending from the catheter unit 100 and having a valve to prevent backflow of blood; A fixed fastening part 300 for fastening and tightening the tube with the tube of the backflow prevention part 200 by forward pressing; A line connection part 400 connected to the fixed connection part 300 and a pressure line for measuring arterial blood pressure; And a blood collecting part 500 mounted on a side of the line connecting part 400 adjacent to the fixed fastening part 300 and collecting blood through hydraulic pressure.

FIG. 8 is a block diagram of a blood sampling unit 500 of an arterial blood sampling system according to another embodiment of the present invention. FIG. 10 is a block diagram of a blood sampling unit 500 according to an embodiment of the present invention. It is a schematic diagram of blood sampling use.

As shown in FIGS. 8 and 9, the apparatus is connected to the syringe so as to collect blood through the hydraulic pressure, which is mounted on the side adjacent to the fixed fastening part 300 in the line connecting part 400, It is preferable that a blood flow tube 530 connected to the through hole on the side of the line connection part 400 for moving the blood is provided and a check valve 540 for forming blood flow only in one direction inside the blood flow tube 530 It is preferable that it is installed.

As shown in FIG. 9, the blood sampling unit 500 is provided with a check valve 540 in the bloodstream tube to enable rapid blood collection by the operation of the valve, and a very simple Structure. Here, the length of the blocking membrane of the check valve 540 is made shorter as it goes down, suggesting a structure that blood can be collected easily and quickly by the connection of the blood sampling syringe.

That is, as shown in FIG. 10, when the syringe is not connected to the syringe for taking an external blood, if the syringe is connected for blocking the blood flow by the inner check valve 540 and collecting the blood, The blocking membranes of the blood vessel 540 are rotated in opposite directions to open the blood flow tube 530, and blood can be easily collected through the hydraulic pressure.

As another embodiment of the present invention, a blood sampling system further includes a blood gas analyzer for analyzing blood gas by collecting blood gas in connection with the blood sampling unit 500.

As described above, in the embodiment of the present invention, it is possible to directly analyze blood by collecting blood, to measure blood pressure of arterial blood through the pressure line, and to collect blood gas ejected through blood, It is also possible to provide an apparatus for analyzing the blood gas by being connected to the blood analyzer 500.

FIG. 11 is a connection sectional view of a backflow preventing part and a fastening part 300 of a blood sampling system according to an embodiment of the present invention, and FIG. 12 is a view illustrating a sectional view along a perforated line of FIG.

As shown in FIGS. 11 and 12, in the arterial blood collection system according to the embodiment of the present invention, there is a problem that the blood flows backward when the pressure line and the catheter unit 100 are connected, and the connection is difficult and time- A tapered tube having a valve structure formed on the inner side of the hub 130 of the catheter unit 100 is formed in order to improve the problem of the conventional blood taking apparatus in which it is difficult to confirm whether the connection is correct, And a fastening part 300 that can easily and stably fix the catheter unit 100 with the presser line by simple forward pressing for easy connection of the catheter unit 100 and the pressure line.

As shown in FIG. 12, a cross section cut along the respective cut lines is shown. The cross section of the B cross section and the tube are configured such that the spring 350 is mounted on the outer side of the blood flow tube and the spring 350 is compressed on the shear fastening portion 330 So that the rear end fastening portion 370 can be fastened and fixed by forward pressing.

The embodiments and the accompanying drawings described in the present specification are merely illustrative of some of the technical ideas included in the present invention. Accordingly, the embodiments disclosed herein are for the purpose of describing rather than limiting the technical spirit of the present invention, and it is apparent that the scope of the technical idea of the present invention is not limited by these embodiments. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100: catheter unit 110: needle
130: hub 200: backflow prevention part
215: blocking blade 300: fixed fastening part
330: shear fastening part 350: spring
370: rear end fastening portion 400: line connecting portion
500: blood sampling unit

Claims (14)

A catheter part punctured to the arterial blood vessel;
A tubular tube extending from the catheter portion, the backflow preventing portion having a valve to prevent backflow of blood;
A fixed fastening part for fastening and tightening the tube with the tube of the backflow preventing part by forward pressing; And
And a line connection portion extending from the fixed connection portion and connected to a pressure line for arterial blood pressure measurement. The method according to claim 1,
The catheter portion
Needle puncturing arterial blood; And
And a hub which is mounted to be wrapped around the outside of the needle tip. The method according to claim 1,
The backflow prevention portion includes:
And a valve comprising a plurality of blocking blades for selectively limiting the flow of blood flow, the tubular tube extending from the catheter portion to the center and spaced apart from each other at the inner side of the hollow portion. The method of claim 3,
The shut-
Wherein the tube is spaced apart from the circular periphery of the inner cross section and disposed symmetrically with respect to the center, and the area and thickness become smaller toward the center. The method according to claim 1,
The backflow prevention portion includes:
And an area of a vertical cross section of the inner hollow section is widened in a direction extending from the catheter section. The method according to claim 1,
The fixed fastening portion
A cylindrical housing;
A front end fastening portion located at an inner front surface of the housing and connected to the backflow prevention portion by a blood flow tube;
A rear end fastening portion located on an inner rear surface of the housing and connected to the line connecting portion; And
And a spring connecting a rear end blood flow tube of the shear fastening part and a shear blood flow tube of the rear end fastening part,
And the rear end fastening portion is fastened and fastened to the front end fastening portion so as to be fixed. A catheter part punctured to the arterial blood vessel;
A tubular tube extending from the catheter portion, the backflow preventing portion having a valve to prevent backflow of blood;
A fixed fastening part for fastening and tightening the tube with the tube of the backflow preventing part by forward pressing;
A line connection portion extending from the fixed fastening portion and connected to a pressure line for arterial blood pressure measurement; And
And a blood collecting part mounted on a side of the line connecting part adjacent to the fixed fastening part and collecting blood through hydraulic pressure. The method of claim 7,
The backflow prevention portion includes:
And a valve comprising a plurality of blocking blades for selectively limiting the flow of blood flow, the tubular tube extending from the catheter portion to the center and spaced apart from each other at the inner side of the hollow portion. The method of claim 8,
The shut-
Wherein the tube is spaced apart from the circular periphery of the inner surface of the tube and extends symmetrically to the center, and the area and thickness become smaller toward the center. The method of claim 8,
The backflow prevention portion includes:
And an area of a vertical cross section of the inner hollow section is widened in a direction extending from the catheter section. The method of claim 8,
The fixed fastening portion
A cylindrical housing;
A front end fastening portion located at an inner front surface of the housing and connected to the backflow prevention portion by a blood flow tube;
A rear end fastening portion located on an inner rear surface of the housing and connected to the line connecting portion; And
And a spring connecting a rear end blood flow tube of the shear fastening part and a shear blood flow tube of the rear end fastening part,
And the rear end fastening portion is fastened and fastened to the front end fastening portion so as to be fixed. The method of claim 8,
The blood-
Wherein the arterial blood collection system is provided with a blood flow tube that passes through the center in the shape of a disk and is connected to the through hole on the side of the line connection portion to move blood. The method of claim 12,
Wherein a check valve for controlling blood flow is installed inside the blood flow tube. A catheter part punctured to the arterial blood vessel;
A tubular tube extending from the catheter portion, the backflow preventing portion having a valve to prevent backflow of blood;
A fixed fastening part for fastening and tightening the tube with the tube of the backflow preventing part by forward pressing;
A line connection part connected to the fixed connection part and a pressure line extending to measure arterial blood pressure;
A blood collecting part mounted on a side of the line connecting part adjacent to the fixed fastening part and collecting blood through hydraulic pressure; And
And a blood gas analyzer for analyzing the blood gas by collecting the blood gas in connection with the blood sampling part.

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