CN219742707U - Blood sampling device capable of simply and conveniently sampling blood and avoiding blood waste - Google Patents

Abstract

The utility model relates to a blood sampling device which is simple and convenient in blood sampling and can avoid blood waste, wherein the blood sampling device comprises a puncture needle, a blood sampling pipeline, a pipe clamp switch, a puncture device, an extension pipeline, a positive pressure joint and a closed suction device; the extension pipeline is connected with the closed suction device through the positive pressure connector. The advantages are as follows: through closed suction device and piercing depth, the mixed liquor and partial blood in the closed suction device suction pipeline before the blood sampling is ready for the blood sampling, then carries out the blood sampling through piercing depth to make the piercing depth position of pipeline be full of the liquid that only has the blood composition, medical staff has effectively improved the degree of accuracy that blood detected like this when blood gas analysis, heart machine damage marker survey etc. examine, and blood sampling convenient operation. After blood collection, the blood in the closed suction device is returned to the patient, so that iatrogenic blood waste is reduced.

Description

A blood collection device that is easy to collect blood and can avoid blood waste

Technical field

The utility model relates to the technical field of medical devices. Specifically, it is a blood collection device that is easy to collect blood and can avoid blood waste.

Background technique

Human blood is a red viscous liquid, which is composed of plasma and cells. Plasma contains many substances such as proteins, enzymes, carbohydrates, fats, inorganic salts, etc. The content of these substances usually has a certain normal range; The cellular parts include red blood cells, white blood cells, platelets, etc. The various components in the blood have their own functions. When a disease occurs, blood tests are necessary. In the process of clinical work, medical staff often need to collect blood from patients. Especially in the clinical treatment of critical and critical patients, blood samples need to be collected frequently for blood gas analysis, determination of cardiac injury markers and other tests.

However, the blood collection tube circuits in the prior art have the following shortcomings and defects:

First of all, at the beginning of the blood collection work, the entire blood collection tube line must be perfused to expel air, which results in the liquid in the suction line being mixed liquid (the liquid is a mixed dilution of blood and sealing liquid) and part of the blood. In this way, when puncture blood collection is performed, the liquid obtained through puncture contains the diluent of the sealing solution, which affects the accuracy of the blood test.

Secondly, in existing blood collection tube circuits, after blood samples are collected, some blood will remain in the pipeline, which is usually treated as medical waste along with the blood collection tube circuit, resulting in iatrogenic blood waste.

In addition, in existing blood collection tube circuits, the entire process of blood collection is usually exposed to external conditions, which greatly increases the possibility of infection for patients.

Chinese patent document CN202110123255.7, application date 2021-01-29, patent name: vascular access device with ventilated blood collection port, discloses that the ventilated blood collection port can be set on the vascular access device, positioned between the catheter adapter and the extension set on the side port of the room. The side ports provide separate fluid pathways for blood collection and infusion fluid, thereby isolating blood from the extension set. The vented blood collection port may be provided in the form of a septum housing that moves from the blood collection position to the fluid injection position. When in the blood collection position, the septum housing can enable the extension set to be primed and remain primed during blood draws. However, there is no corresponding disclosure regarding a technical solution to improve the accuracy of blood collection, avoid blood waste, and effectively reduce infection.

In summary, there is an urgent need for a blood collection device that improves the accuracy of blood collection, avoids blood waste, and effectively reduces infection. However, there are currently no reports on such a blood collection device.

Contents of the invention

The purpose of this utility model is to provide a blood collection device that improves the accuracy of blood collection, avoids waste of blood, and effectively reduces infection.

In order to achieve the above purpose, the technical solution adopted by this utility model is:

A blood collection device that is easy to collect blood and can avoid blood waste; the blood collection device includes a puncture needle, a blood collection tube, a tube card switch, a puncture device, an extension pipeline, a positive pressure connector, and a closed suction device; The puncture needle is connected to the distal end of the blood collection tube; the closed suction device is arranged at the proximal end of the extended pipeline; the tube card switch is arranged on the blood collection tube path close to the puncture needle; the tube card switch is A puncture device is provided on one side; a positive pressure connector is provided at the proximal end of the extension pipeline; the extension pipeline is connected to a closed suction device through a positive pressure connector;

The blood collection device also includes a three-way pipe; the three-way pipe includes a first pipe, a second pipe, and a third pipe; the third pipe is connected to the blood collection tube; the first pipe The connecting pipe and the second connecting pipe are respectively connected with the blood collection tube circuit; the first connecting pipe is connected to a puncture device; the second connecting pipe is provided with a second one-way valve;

The puncture device includes a housing, a first one-way valve, and a closing cap; a hollow channel is provided in the housing; a first one-way valve is provided in the hollow channel; and the outer end of the housing Install a closing cap; the first one-way valve and the second one-way valve are both in a closed state in their natural state;

The first one-way valve includes a valve body; a valve plate is arranged in the center of the valve body; the valve plates are at least two pieces and converge into one point at the center of the valve body.

As a preferred technical solution, the first one-way valve is made of silicone material.

As a preferred technical solution, the second one-way valve includes a valve core; an adjustment knob is provided on the valve core; a valve hole is provided on the valve core; the adjustment knob is strip-shaped, When the adjusting knob is in the same direction as the second connecting pipe, the valve core closes the second connecting pipe; when the adjusting knob is perpendicular to the second connecting pipe, the valve hole in the valve core communicates with the second connecting pipe.

As a preferred technical solution, the closed suction device includes an aspirator body, a sealing sleeve, and a fixing plate; the fixing plate is provided with a slot; and the aspirator body is fixed on the slot. ; The suction device body includes an outer sleeve; a suction rod is provided inside the outer sleeve; a sleeve sealing plug is provided at one end of the suction rod; the sealing sleeve is sleeved outside Put the sleeve on the outer end and seal the suction rod.

As a preferred technical solution, a positive pressure joint is provided at the connection between the extended pipeline and the closed suction device; a positive pressure valve is provided on the positive pressure joint; and the positive pressure valve is connected in an airtight manner. suction device.

As a preferred technical solution, the outside of the positive pressure valve is in the form of a Luer connector; specifically, it includes a male Luer connector and a female Luer connector; the male Luer connector and the female Luer connector match .

As a preferred technical solution, the sealing sleeve is made of silicone material.

As a preferred technical solution, a sealing ring is provided at the connection between the second one-way valve and the three-way pipeline.

As a preferred technical solution, the first one-way valve is funnel-shaped as a whole.

The advantages of this utility model are:

1. This utility model provides a blood collection device that is easy to collect blood and can avoid blood waste. Through a closed suction device and a puncture device, the closed suction device sucks the mixed liquid in the pipeline before blood collection (the liquid is blood and (mixed diluent of sealing solution) and part of the blood to prepare for blood collection, and then collect blood through the puncture device, so that the puncture device part of the pipeline is filled with liquid with only blood components, so that medical personnel can perform blood gas analysis, cardiology, etc. It effectively improves the accuracy of blood testing when measuring damage markers and other tests, and the blood collection operation is convenient. After blood collection is completed, the blood in the closed suction device is returned to the patient, thereby reducing iatrogenic blood waste.

2. By setting the first one-way valve, the blood flow in the blood collection tube can flow out through the first one-way valve, and the blood collection can be automatically sealed after the blood collection is completed, making the blood collection operation convenient and avoiding infection.

3. Set the first one-way valve into a valve plate structure. When external force or air pressure is applied, the valve plate opens; when the blood collection is completed, the valve plates can come together to achieve a tight seal, so that the first one-way valve can automatically close. No manual control required.

4. Design the tightness of the second one-way valve into a mechanical structure that can be manually controlled to meet the use requirements of a closed aspirator. The second one-way valve can be manually controlled to open or close. When preparing for blood collection, control and adjust The knob allows the valve hole to communicate with the extended pipeline; thereby extracting the mixed liquid and part of the blood into the closed suction device. When the puncture device performs blood collection work, the adjustment knob of the second one-way valve is controlled to prevent closed suction. The mixed liquid in the device flows back; at the same time, the blood collected in the blood collection device is prevented from entering the closed suction device; when the puncture device completes blood collection, the second one-way valve is opened, and the valve hole is connected with the blood collection tube line, so that The blood and mixed fluid in the closed suction device are returned to the patient, thereby reducing blood waste.

5. By setting the fixing plate, it is convenient to fix the suction device body and facilitate stable suction; by setting the outer sleeve and the suction rod, a negative pressure is formed to extract the liquid; by setting the sealing sleeve, the purpose is to : The purpose is to reduce pipeline-related infections.

6. By designing the structural form of the Luer connector, which is a standardized micro-leakage connector, leakage can be effectively reduced.

7. The first one-way valve is overall funnel-shaped, and the large end of the first one-way valve is located outside the pipeline, and the small end is located inside the pipeline. The first one-way check valve can only be opened when external force is applied. When the airtight suction device is in the suction state, its internal liquid impact force cannot open the first one-way valve, ensuring that the first one-way valve of tightness.

Description of the drawings

Figure 1 is a schematic structural diagram of a blood collection device of the present invention that is easy to collect blood and can avoid blood waste.

Figure 2 is a schematic structural diagram of the puncture device.

Figure 3 is a schematic structural diagram of the first one-way valve.

Figure 4 is a schematic structural diagram of the second one-way valve.

Figure 5 is a schematic structural diagram of a closed suction device.

Detailed ways

The utility model will be further described below with reference to the embodiments and the accompanying drawings.

The reference signs and components involved in the drawings are as follows:

1. Puncture needle 2. Blood collection tube

3. Pipe card switch 4. Puncture device

41. Housing 42. First one-way valve

421. Valve body 422. Valve plate

43. Closing cap 5. Tee pipe

51.First takeover 52.Second takeover

53. The third connecting pipe 6. The second one-way valve

61. Valve core 62. Adjustment knob

63. Valve hole 7. Closed suction device

71.Aspirator body 72.Sealing sleeve

73.Card slot 711.Outer sleeve

74. Fixed plate 75. Suction rod

8. Positive pressure connector

81. Positive pressure valve 9. Extension pipeline

In order to make the purpose, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. Obviously, the description The embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

In order to facilitate understanding of the embodiments of the present utility model, specific embodiments will be further explained below with reference to the accompanying drawings. The embodiments do not constitute limitations to the embodiments of the present utility model.

In the description of the embodiments of the present invention, it should be noted that the terms "first", "second", "one end", "other end", "far end", "proximal end", etc. indicate the orientation or The positional relationship is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. , therefore cannot be understood as a limitation of the present utility model; in addition, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a removable connection. Detachable connection, or integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

Please refer to Figure 1, which is a schematic structural diagram of a blood collection device of the present invention that is easy to collect blood and can avoid blood waste. A blood collection device that is easy to collect blood and can avoid blood waste; the blood collection device includes a puncture needle 1, a blood collection tube 2, a tube card switch 3, a puncture device 4, an extension pipeline 9, a positive pressure connector 8, a closed pump Suction device 7; the puncture needle 1 is connected to the distal end of the blood collection tube 2; the closed suction device 7 is provided at the proximal end of the extension tube 9; the tube card switch 3 is provided close to the puncture On the blood collection tube 2 of the needle 1; a puncture device 4 is provided on one side of the tube card switch 3; a positive pressure connector 8 is provided at the proximal end of the extension pipeline; the extension pipeline passes through the positive pressure connector 8Connect the closed suction device 7.

The blood collection device also includes a three-way pipe 5; the three-way pipe 5 includes a first pipe 51, a second pipe 52, and a third pipe 53; the third pipe 53 is established with the blood collection tube 2 Connection; the first take-over 51 and the second take-over 52 are respectively connected with the blood collection tube line 2; the first take-over 51 is connected to the puncture device 4; the second take-over 52 is provided with a second one-way valve 6.

Please refer to FIG. 2 , which is a schematic structural diagram of the puncture device 4 . The puncture device 4 includes a housing 41, a first one-way valve 42, and a closing cap 43; a hollow channel is provided in the housing 41; a first one-way valve 42 is provided in the hollow channel; A closing cap 43 is installed on the outer end of the housing 41 .

Please refer to FIG. 3 , which is a schematic structural diagram of the first one-way valve 42 . The first one-way valve 42 includes a valve body 421; a valve piece 422 is provided in the center of the valve body 421; the valve piece 422 is at least two pieces and converges into a point at the center of the valve body 421; The first one-way valve 42 is made of silicone material.

Please refer to FIG. 4 , which is a schematic structural diagram of the second one-way valve 6 . The second one-way valve 6 includes a valve core 61; an adjustment knob 62 is provided on the valve core 61; a valve hole 63 is provided on the valve core 61; the adjustment knob 62 is in a long strip shape. When the adjusting knob 62 and the second connecting pipe 52 are in the same direction, the valve core 61 closes the second connecting pipe 52; when the adjusting knob 62 is perpendicular to the second connecting pipe 52, the valve hole 63 in the valve core 61 communicates with the second connecting pipe 52.

Please refer to FIG. 5 , which is a schematic structural diagram of the closed suction device 7 . The closed suction device 7 includes an aspirator body 71, a sealing sleeve 72, and a fixing plate 74; the fixing plate 74 is provided with a slot 73; the aspirator body 71 is fixed on the slot 73. ; The suction device body 71 includes an outer sleeve 711; a suction rod 75 is provided inside the outer sleeve 711; one end of the suction rod 75 is provided with a sleeve sealing plug; The sealing sleeve 72 is sleeved on the outer end of the outer sleeve and seals the suction rod 75.

The connection between the extended pipeline and the closed suction device 7 is provided with a positive pressure connector 8; the positive pressure connector 8 is provided with a positive pressure valve; the outside of the positive pressure valve is a Luer connector. Structural form: The positive pressure valve is connected to the closed suction device 7.

What needs to be explained in this embodiment is:

The blood collection tube circuit 2 is provided with a tube card switch 3. Through the tube card switch 3, the blood collection tube tube 2 can be blocked in an emergency to prevent blood from flowing out when the blood collection device fails.

The blood collection device also includes a three-way pipe 5; the three-way pipe 5 includes a first pipe 51, a second pipe 52, and a third pipe 53; the third pipe 53 is established with the blood collection tube 2 Connection; the first take-over 51 and the second take-over 52 are respectively connected with the blood collection tube line 2; the first take-over 51 is connected to the puncture device 4; the second take-over 52 is provided with a second one-way valve 6; The effect of this design is: by setting up the three-way pipeline 5, the blood collection tube 2 is shunted, one path is connected to the puncture device 4 through the first connecting tube 51, and the other path is connected to the sealed pump through the second connecting tube 52 and the extension tube. The suction device 7 is ingeniously designed, independent of each other and not constrained.

The blood collection device includes a closed suction device 7 and a puncture device 4. Before blood collection, the closed suction device 7 sucks the mixed liquid in the pipeline (the liquid is a mixed diluent of blood and sealing liquid) and part of the blood. , prepare for blood collection, and then collect blood through the puncture device 4, so that the puncture device 4 part of the pipeline is filled with liquid with only blood components, so that medical personnel can effectively perform blood gas analysis, cardio-mechanical damage marker determination and other tests. The accuracy of blood testing is improved, and the blood collection operation is convenient.

The puncture device 4 includes a housing 41, a first one-way valve 42, and a closing cap 43; a hollow channel is provided in the housing 41; and a first one-way valve 42 is provided in the hollow channel. Among them, the closing cap 43 is used to isolate from the outside world when not in use to avoid blood infection; by setting the first one-way valve 42, the blood flow in the blood collection tube 2 can be caused to flow out through the first one-way valve 42, and the blood collection can be completed. Automatically sealed, blood collection operation is convenient and infection can be avoided at the same time.

The first one-way valve 42 includes a valve body 421; a valve piece 422 is disposed in the center of the valve body 421; the valve pieces 422 are at least two pieces and are converged into a point at the center of the valve body 421. The effect of this design is: the first one-way valve 42 is set in the structural form of a valve plate 422. When external force or air pressure is applied, the valve plate 422 opens; when the blood collection is completed, the valve plates 422 can converge a little to achieve sealing, so that the second one-way valve 422 can be closed. A one-way valve 42 can close automatically without manual control.

The first one-way valve 42 is made of silicone material. The effect of this design is: using silicone material, it has good elasticity and good sealing.

The second one-way valve 6 includes a valve core 61; an adjustment knob 62 is provided on the valve core 61; a valve hole 63 is provided on the valve core 61; the adjustment knob 62 is in a long strip shape. When the adjusting knob 62 and the second connecting pipe 52 are in the same direction, the valve core 61 closes the second connecting pipe 52; when the adjusting knob 62 is perpendicular to the second connecting pipe 52, the valve hole 63 in the valve core 61 communicates with the second connecting pipe 52. The effect of this design is: the sealing of the second one-way valve 6 is designed into a mechanical structure that can be manually controlled to meet the use requirements of a closed aspirator, and the second one-way valve 6 can be manually controlled to open or close when collecting blood. Before preparation, control the adjustment knob 62 so that the valve hole 63 communicates with the extended pipeline; thereby extracting the mixed liquid and part of the blood into the closed suction device 7, when the puncture device 4 performs blood collection work, control the second one-way The adjusting knob 62 of the valve 6 prevents the mixed liquid in the closed suction device 7 from flowing back; at the same time, it prevents the blood collected in the blood collection device from entering the closed suction device 7; when the puncture device 4 completes blood collection, open The second one-way valve 6 and the valve hole 63 communicate with the blood collection tube 2, allowing the blood and mixed liquid in the closed suction device 7 to be returned to the patient, thereby reducing blood waste.

The closed suction device 7 includes an aspirator body 71, a sealing sleeve 72, and a fixing plate 74; the fixing plate 74 is provided with a slot 73; the aspirator body 71 is fixed on the slot 73. ; The suction device body 71 includes an outer sleeve 711; a suction rod 75 is provided inside the outer sleeve 711; one end of the suction rod 75 is provided with a sleeve sealing plug; The sealing sleeve 72 is sleeved on the outer end of the outer sleeve and seals the suction rod 75. The effect of this design is: by arranging the fixing plate 74, it is convenient to fix the suction device body 71, so as to facilitate stable suction; by arranging the cooperation between the outer sleeve 711 and the suction rod 75, a negative pressure is formed to extract the liquid; By providing the sealing sleeve 72, the purpose is to reduce pipeline related infections.

The outside of the positive pressure valve is in the form of a Luer connector; specifically, it includes a male Luer connector and a female Luer connector; the male Luer connector and the female Luer connector match. The effect of this design is to effectively reduce leakage by designing the structural form of the Luer connector, which is a standardized micro-leakage connector.

There is a sealing ring at the connection between the second one-way valve 6 and the three-way pipeline 5 . The sealing ring design increases the sealing performance of the connection and prevents liquid leakage.

The first one-way valve 42 is funnel-shaped as a whole, and the large end of the first one-way valve is located outside the pipeline, and the small end is located inside the pipeline. The first one-way check valve can only be opened when external force is applied. When the airtight suction device is in the suction state, its internal liquid impact force cannot open the first one-way valve 42, ensuring that the first one-way valve 42 is opened. The tightness of valve 42.

The utility model provides a blood collection device that is easy to collect blood and can avoid blood waste. It includes a closed suction device 7 and a puncture device 4. The closed suction device 7 sucks the mixed liquid in the pipeline before blood collection (the liquid is blood and The mixed diluent of sealing liquid) and part of the blood are prepared for blood collection, and then the blood collection is performed through the puncture device 4, so that the puncture device 4 part of the pipeline is filled with liquid with only blood components, so that medical personnel can perform blood gas analysis It effectively improves the accuracy of blood testing and makes the blood collection operation convenient when performing tests such as measuring heart damage markers and so on.

The above are only the preferred embodiments of the present utility model. It should be pointed out that those of ordinary skill in the art can also make several improvements and supplements without departing from the principles of the present utility model. These improvements and supplements can also be made. It should be regarded as the protection scope of this utility model.

Claims (9)

1. The blood sampling device is characterized by comprising a puncture needle, a blood sampling pipeline, a pipe clamp switch, a puncture device, an extension pipeline, a positive pressure joint and a closed suction device; the puncture needle is connected to the far end of the blood sampling pipeline; the closed suction device is arranged at the proximal end of the extension pipeline; the pipe clamp switch is arranged on the blood sampling pipeline close to the puncture needle; a puncture device is arranged on one side of the pipe clamp switch; the proximal end of the extension pipeline is provided with a positive pressure joint; the extension pipeline is connected with the closed suction device through a positive pressure connector;

the blood sampling device also comprises a three-way pipeline; the three-way pipeline comprises a first connecting pipe, a second connecting pipe and a third connecting pipe; the third connecting pipe is connected with the blood sampling pipeline; the first connecting pipe and the second connecting pipe are respectively communicated with the blood sampling pipeline; the first connecting pipe is connected with a puncture device; the second connecting pipe is provided with a second one-way valve;

the puncture device comprises a shell, a first one-way valve and a closed cap; a hollow channel is arranged in the shell; a first one-way valve is arranged in the hollow channel; the outer end of the shell is provided with a sealing cap; the natural states of the first one-way valve and the second one-way valve are closed states;

the first one-way valve comprises a valve body; the valve block is arranged in the center of the valve body; the valve plates are at least two and are polymerized into a point at the center of the valve body.

2. The lancing device of claim 1, wherein the first check valve is made of a silicone material.

3. The lancing device of claim 1, wherein the second one-way valve comprises a valve element; an adjusting knob is arranged on the valve core; the valve core is provided with a valve hole; the valve core seals the second connecting pipe when the adjusting knob and the second connecting pipe are in the same direction; when the adjusting knob is vertical to the second connecting pipe, the valve hole in the valve core is communicated with the second connecting pipe.

4. The blood sampling device according to claim 1, wherein the sealed suction device comprises an aspirator body, a sealing sleeve and a fixing plate; the fixing plate is provided with a clamping groove; the aspirator body is fixed on the clamping groove; the aspirator body comprises an outer sleeve; a suction rod is arranged in the outer sleeve; a sleeve sealing plug is arranged at one end part of the suction rod; the sealing sleeve is sleeved at the outer end part of the outer sleeve and seals the suction rod.

5. The blood sampling device according to claim 1, wherein a positive pressure joint is arranged at the connection part of the extension pipeline and the closed type suction device; the positive pressure joint is provided with a positive pressure valve; the positive pressure valve is connected with the closed suction device.

6. The blood sampling device according to claim 5, wherein the outside of the positive pressure valve is in the form of a luer fitting; the device specifically comprises a male luer connector and a female luer connector; the male luer connector is matched with the female luer connector.

7. The lancing device of claim 4, wherein the sealing sleeve is made of a silicone material.

8. The lancing device of claim 1, wherein the second one-way valve is sealed to the three-way line.

9. The lancing device of claim 2, wherein said first one-way valve is generally funnel-shaped.