Portable blood detection sampling and filling device

Abstract

The utility model discloses a portable blood detection sampling injector, which relates to the technical field of biological detection, and comprises a needle cylinder, the needle cylinder comprises a sampling part which is communicated with the front wall of the front end of the needle cylinder, and a first medical one-way valve is arranged in the sampling part; the filling part is arranged on the side wall of the front end of the needle cylinder in a communicating mode, and a second medical one-way valve is arranged in the filling part; the filter membrane is arranged at the communication part of the filling part and the needle cylinder; the piston is arranged in the needle cylinder in a sleeving manner; the front end of the push-pull rod is fixedly connected with the piston, and the rear end of the push-pull rod extends out of the needle cylinder. The device provided by the utility model is convenient and quick to use, wins precious rescue time for patients, and can also improve the accuracy of whole blood detection.

Description

Technical Field

[0001] The utility model relates to the technical field of biological detection, in particular to a portable blood detection sampling and filling device. Background Art

[0002] With the increase of the aging population, the incidence of acute and critical illnesses has also increased significantly, and the onset is rapid and the progression is fast. If effective treatment cannot be obtained within the best time (the cardiovascular emergency project needs to produce results within 20 minutes, and the best treatment time for cardiovascular emergencies is within 120 minutes), the fatality and disability rates are extremely high. Therefore, China has proposed to gradually establish a treatment system for acute and critical patients based on the "five major centers" (chest pain center, stroke center, trauma center, critical maternal rescue center, critical children and neonatal rescue center) across the country to achieve rapid, efficient, and high-quality medical treatment for acute and critical patients. Among various acute and critical illnesses, cardiovascular emergencies are the "number one killer" of national health. In China, about 3.5 million people die from cardiovascular emergencies every year, and among them, the newly diagnosed myocardial infarction cases reach up to 600,000 cases per year, but only 30,000 cases have received timely and standardized treatment.

[0003] Currently, in vitro diagnostic kits mainly detect serum / plasma. Since blood cells in whole blood will interfere with the detection process and affect the accuracy of the results, whole blood detection is less common. Serum is a pale yellow transparent liquid separated after whole blood is allowed to stand and coagulate without anticoagulant, and plasma is the upper pale yellow translucent liquid after whole blood is added with anticoagulant and centrifuged or allowed to stand and layer. Currently, the commonly used method for separating serum / plasma is to use a centrifuge for separation, which generally takes about 5 - 10 minutes. Generally, centrifuge equipment is relatively large and it is difficult to match small and medium-sized testing rooms. On the other hand, centrifugation takes a certain amount of time, and for emergency or acute and critical patients, the golden rescue time is limited. If whole blood can be directly tested without centrifugation, precious rescue time can be won for patients. Moreover, whole blood detection is more convenient and more popular compared to serum / plasma. Content of the Utility Model

[0004] Aiming at the problems existing in the prior art, the utility model provides a portable blood detection sampling and filling device, which is convenient and fast to use, can win precious rescue time for patients, and can also improve the accuracy of whole blood detection.

[0005] To achieve the above utility model purpose, the technical solution of the utility model is as follows:

[0006] The portable blood detection sampling and filling device includes:

[0007] A syringe barrel, which includes:

[0008] A sampling part, which is connected to the front wall of the front end of the syringe, and a first medical one-way valve is arranged in the sampling part, so that the blood in the sampling part can only flow toward the syringe;

[0009] A filling part, which is connected to the front end side wall of the syringe, and a second medical one-way valve is arranged in the filling part, so that blood in the filling part can only flow away from the syringe;

[0010] A filter membrane, which is arranged at the connection between the filling part and the syringe;

[0011] A piston, which is sleeved in the syringe;

[0012] A push-pull rod has a front end fixedly connected to the piston and a rear end extending out of the syringe.

[0013] Furthermore, it also includes a quantitative control mechanism, and the quantitative control mechanism includes:

[0014] A first connecting plate, which is detachably arranged on the outer wall of the front end of the syringe;

[0015] A second connecting plate, which is detachably arranged on the rear outer wall of the syringe;

[0016] The rear end of the abutment rod is fixedly connected to the rear end of the push-pull rod, and a limit block is arranged at the front end, and the limit block is located between the first connecting plate and the second connecting plate. The abutment rod is parallel to the push-pull rod.

[0017] Furthermore, the quantitative control mechanism also includes:

[0018] The third connecting plate has a front end vertically fixedly connected to the first connecting plate, and a rear end vertically fixedly connected to the second connecting plate.

[0019] Furthermore, a slideway is arranged on the third connecting plate, the limit block is slidably connected to the slideway, and a limit piece is arranged on the slideway.

[0020] Furthermore, the quantitative control mechanism also includes:

[0021] A push-pull plate, one end of which is connected to the rear end of the abutment rod, and the other end of which is detachably fixedly connected to the rear end of the push-pull rod.

[0022] Furthermore, a scale is provided on the third connecting plate.

[0023] The utility model provides a convenient blood test sampling and filling device, in which a sampling part and a filling part are arranged at the front end of the syringe, and a filter membrane is arranged at the connection between the syringe and the filling part. By pulling and pushing the push-pull rod, the sampling and filling of whole blood can be realized. During the filling process of the test kit, the filter membrane filters red blood cells, thereby improving the accuracy of whole blood testing. The whole blood can be directly tested without centrifugation, which is convenient and quick, and wins precious rescue time for the patient.

[0024] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the main structure of a portable blood testing sampling and filling device in one technical solution of the utility model.

[0026] Figure 2 The utility model is a top view of a portable blood testing sampling and filling device in one technical solution.

[0027] In the figure, 1. syringe; 11. sampling part; 111. first medical one-way valve; 12. filling part; 121. second medical one-way valve; 13. filter membrane; 14. end cover; 2. piston; 3. push-pull rod; 4. quantitative control mechanism; 41. first connecting plate; 42. second connecting plate; 43. resistance rod; 431. limit block; 44. third connecting plate; 441. slideway; 442. limit member; 443. ruler; 45. push-pull plate. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with embodiments so that those skilled in the art can implement the invention with reference to the description.

[0029] It should be noted that, unless otherwise specified, the experimental methods described in the following implementation schemes are all conventional methods, and the reagents and materials, unless otherwise specified, can all be obtained from commercial channels; in the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "setting" should be understood in a broad sense. For example, they can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. The orientation or positional relationship indicated by the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, and 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, and therefore cannot be understood as a limitation to the present invention.

[0030] Embodiment

[0031] As Figure 1 and Figure 2 shown, the present invention provides a portable blood detection sampling and filling device, comprising:

[0032] A syringe 1, which includes:

[0033] A sampling part 11, which is connected and arranged at the front wall of the front end of the syringe 1. The front end of the sampling part 11 is connected to a needle, and a end cap 14 is arranged at the rear end. A first medical one-way valve 111 is arranged in the sampling part 11, and the blood in the sampling part 11 can only flow towards the syringe 1;

[0034] A filling part 12, which is connected and arranged at the side wall of the front end of the syringe 1. A second medical one-way valve 121 is arranged in the filling part 12, and the blood in the filling part 12 can only flow away from the syringe 1;

[0035] A filter membrane 13, which is arranged at the connection between the filling part 12 and the syringe 1. The filter membrane 13 is used to filter red blood cells in the blood, such as the GF1 blood filter membrane of Shanghai Jieyi Biotechnology Co., Ltd.;

[0036] A piston 2, which is sleeved in the syringe 1;

[0037] A push rod 3, the front end of which is fixedly connected to the piston 2, and the rear end passes through the end cap 14 (a circular hole is correspondingly arranged on the end cap 14) and extends out of the syringe 1.

[0038] The usage method of this device is as follows:

[0039] Insert the needle into the patient's body, pull the push-pull rod 3 backward, and the blood flows into the syringe 1 through the first medical one-way valve 111. The blood sample entering the syringe 1 is whole blood, which contains more red blood cells. If the whole blood is directly placed in the sample loading hole of the test kit, the large number of red blood cells in the whole blood sample will cause the added sample to be blocked in the sample loading hole and unable to flow to the NC membrane, resulting in the problem of detection failure, or because some red blood cells in the whole blood sample are slightly ruptured, causing some red blood cells to flow to the NC membrane, affecting the accuracy of the test results. For this reason, after sampling, align the filling part 12 with the sample loading hole of the test kit, push the push-pull rod 3 forward, and the whole blood is injected from the syringe 1 into the sample loading hole of the test kit through the filter membrane 13 and the second medical one-way valve 121. When the whole blood flows through the filter membrane 13, the red blood cells therein are filtered, and the serum / plasma is injected into the sample loading hole of the test kit. The test kit actually detects the serum / plasma, thereby improving the accuracy of the whole blood test. In this way, whole blood can be directly tested without centrifugation, which is convenient and fast, and can win precious rescue time for patients. It is very suitable for critically ill patients and cardiovascular emergency patients in chest pain centers, stroke centers, trauma centers, critical maternal and child care centers, critical children and neonatal care centers, etc. When using, if the plasma is tested, such as D-dimer, etc., before sampling, use a syringe 1 containing an anticoagulant; if the serum is tested, use a syringe 1 without an anticoagulant, such as myoglobin, C-reactive protein, etc.

[0040] In summary, the portable blood testing sampling and filling device provided by the utility model has a sampling part 11 and a filling part 12 arranged at the front end of the syringe 1, and a filter membrane 13 is arranged at the connection between the syringe 1 and the filling part 12. By pulling and pushing the push-pull rod 3, the sampling and filling of whole blood can be realized. During the filling process of the test kit, the filter membrane 13 filters the red blood cells, thereby improving the accuracy of the whole blood test. The whole blood can be directly tested without centrifugation, which is convenient and quick, thereby winning precious rescue time for the patient.

[0041] In another technical solution, a quantitative control mechanism 4 is also included, and the quantitative control mechanism 4 includes:

[0042] A first connecting plate 41, which is detachably arranged on the outer wall of the front end of the syringe 1;

[0043] A second connecting plate 42, which is detachably arranged on the rear outer wall of the syringe 1;

[0044] The rear end of the resisting rod 43 is fixedly connected to the rear end of the push-pull rod 3 , and a limiting block 431 is provided at the front end. The limiting block 431 is located between the first connecting plate 41 and the second connecting plate 42 . The resisting rod 43 is parallel to the push-pull rod 3 .

[0045] When in use, the distance between the first connecting plate 41 and the second connecting plate 42 on the syringe 1 is first set, and the stroke of the push-pull rod 3 can be determined by the limit block 431, so as to achieve a quantitative effect.

[0046] In another technical solution, the quantitative control mechanism 4 further includes:

[0047] The third connecting plate 44 has a front end vertically fixedly connected to the first connecting plate 41 , and a rear end vertically fixedly connected to the second connecting plate 42 .

[0048] The first connecting plate 41 and the second connecting plate 42 are fixedly connected by the third connecting plate 44, so as to facilitate the installation of the first connecting plate 41 and the second connecting plate 42 on the syringe 1. This structure can only sample and fill whole blood with a fixed quantitative value. Further, a slideway 441 is provided on the third connecting plate 44, and the limit block 431 is slidably connected with the slideway 441, and a limit member 442 is installed on the slideway 441. When the push-pull rod 3 is pulled back for sampling, the limit member 442 is installed at the required position behind the limit block 431, and when the limit block 431 hits the limit member 442, the sampling is stopped; when the push-pull rod 3 is pushed forward for filling, the limit member 442 is installed at the required position in front of the limit block 431, and when the limit block 431 hits the limit member 442, the filling is stopped. By installing the limit member 442 at different positions of the slideway 441, the stroke of the push-pull rod 3 can be changed, so as to realize the sampling and filling of whole blood with different quantitative values. Furthermore, a scale 443 is provided on the third connecting plate 44 to facilitate positioning of the limiting member 442 at a desired position and assist quantitative filling.

[0049] In another technical solution, the quantitative control mechanism 4 further includes:

[0050] One end of the push-pull plate 45 is connected to the rear end of the abutment rod 43 , and the other end of the push-pull plate 45 is detachably fixedly connected to the rear end of the push-pull rod 3 .

[0051] By operating the push-pull plate 45, it is convenient to push and pull the push-pull rod 3, and at the same time, the quantitative control mechanism 4 can be detached from the push-pull rod 3. After sampling and filling the whole blood, the quantitative control mechanism 4 is detached from the syringe 1 and the push-pull rod 3 and reused to save costs (only the syringe 1, the piston 2 and the push-pull rod 3 are disposable items).

[0052] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A portable blood test sampling and filling device, characterized in that, include: A syringe (1), comprising: A sampling portion (11) is connected to the front wall of the front end of the syringe (1), and a first medical one-way valve (111) is arranged in the sampling portion (11), so that blood in the sampling portion (11) can only flow toward the syringe (1); A filling portion (12) is connected to the front end side wall of the syringe (1), and a second medical one-way valve (121) is arranged in the filling portion (12). Blood in the filling portion (12) can only flow away from the syringe (1); A filter membrane (13), which is arranged at the connection point between the filling portion (12) and the syringe (1); A piston (2) which is sleeved in the syringe (1); A push-pull rod (3) has a front end fixedly connected to the piston (2) and a rear end extending out of the syringe (1).

2. The portable blood detection sampling and filling device according to claim 1, wherein The invention also comprises a quantitative control mechanism (4), wherein the quantitative control mechanism (4) comprises: A first connecting plate (41) which is detachably arranged on the outer wall of the front end of the syringe (1); A second connecting plate (42) detachably arranged on the rear outer wall of the syringe (1); The rear end of the resistance rod (43) is fixedly connected to the rear end of the push-pull rod (3), and a limit block (431) is provided at the front end, and the limit block (431) is located between the first connecting plate (41) and the second connecting plate (42). The resistance rod (43) is parallel to the push-pull rod (3).

3. The portable blood test sampling and filling device according to claim 2, characterized in that, The quantitative control mechanism (4) further comprises: The third connecting plate (44) has a front end which is vertically fixedly connected to the first connecting plate (41), and a rear end which is vertically fixedly connected to the second connecting plate (42).

4. The portable blood test sampling and filling device according to claim 3, wherein, The third connecting plate (44) is provided with a slideway (441), the limiting block (431) is slidably connected to the slideway (441), and a limiting member (442) is provided on the slideway (441).

5. The portable blood test sampling and filling device according to claim 2, wherein, The quantitative control mechanism (4) further comprises: A push-pull plate (45) has one end connected to the rear end of the abutment rod (43), and the other end of the push-pull plate (45) is detachably fixedly connected to the rear end of the push-pull rod (3).

6. The portable blood test sampling and filling device according to claim 4, wherein, The third connecting plate (44) is provided with a scale (443).

Images