Medical parallel sample reserving blood braid application system

Abstract

The utility model discloses a medical parallel sample reserving blood braid application system. The medical parallel sample reserving blood braid application system comprises a blood braid sample reserving device connected to a connecting catheter in series and a pressing extrusion device used for assisting the blood braid sample reserving device in unfolding. The blood braid sample reserving device comprises a sample reserving bag and a vacuum curled catheter assembly connected with the side portion of the sample reserving bag in a penetrating mode. The vacuum curled conduit assembly comprises a front-end communicating pipe which is in through connection with the side part of the sample reserving bag, a vacuum curled pipe which is connected with the other end of the front-end communicating pipe, and a pipeline switch which is arranged between the front-end communicating pipe and the vacuum curled pipe. The technical scheme of combining the reserved sample bag and the parallel catheter is adopted to replace an original scheme, and a blood braid vacuum curling structure is designed as an initial state, so that the original blood braid length is greatly shortened, a blood braid winding step after blood sampling is omitted, and the preparation efficiency of the reserved sample blood braid is improved.

Description

Technical Field

[0001] The embodiment of the utility model belongs to the technical field of blood sample retention, and more specifically, relates to a medical parallel blood sample retention application system. Background Art

[0002] After each blood donation, the blood collection nurse will cut a small tube from the blood bag, commonly known as "blood braid". The blood braid specimen is a specimen that needs to be preserved for a long time in the blood collection and supply system. Its advantages are small size, low cost, strong traceability, and not easy to be contaminated. Its main function is that if there is any objection to the blood test results, it can be retested under the supervision of a third party, which provides the necessary conditions for tracking the blood test results. After a blood transfusion medical dispute occurs, it can provide conclusive evidence for the legal department, and provide a scientific basis for protecting the interests of the blood station. At the same time, the preservation of a large number of blood braids is also convenient for future scientific investigations and research materials. In actual work, when using a leukocyte-free blood bag to collect whole blood, the blood braid between the leukocyte filter disk and the leukocyte-free blood bag is used as the blood for hospital testing, and the blood braid needs to be attached to the surface of the leukocyte-free blood bag. Because the blood braid is long, the pipeline is messy, which increases the burden on the staff. Therefore, it is of great significance to propose a blood braid application system that is easy to prepare, attach and apply.

[0003] In order to solve the above technical problems, Chinese utility model patent CN219687657U discloses an automated blood braid bundling and tightening device, including a blood bag input unit; a blood bag reversing unit for turning and switching workstations of the blood bag; a bundling and tightening unit and a blood braid bundling component for tightening and bundling the blood braid; a blood bag return unit; an output unit for outputting the blood bag; a constant temperature control component is arranged in the bundling and tightening unit to adjust the hot pressing temperature of the binding strap through PID to prevent the blood quality from being affected; the utility model organically combines the input unit, the turning unit, the return unit, the bundling and tightening unit and the output unit in multiple workstations of the assembly line operation. During use, the staff only needs to place the blood bag and the blood braid at the first blood bag workstation and start the equipment to complete the bundling operation of the blood bag. The bundling size consistency of the mechanized operation is good, which is conducive to the standardized operation process, and no manual direct contact is required, thereby reducing the infection risk of the outer wall of the blood braid.

[0004] However, the above scheme solves the technical problem of inefficient organization of long blood braids by adopting the method of automatic winding and bundling of blood braids, but there are still areas for improvement as follows: compared with the method of mechanized automatic winding of long blood braids, the method of improving the shape of the blood braid to reduce the total length is easier to achieve the preparation and overall packaging of the blood braid; the existing blood braid preparation methods all achieve serial connection of multiple blood braids by a single-pipeline hot pressing method, but do not adopt a method of parallel connection between blood braid segments to reduce the overall length of the blood braid; the existing blood for testing is collected only through blood braids, but does not use a small storage blood bag combined with the blood braid to collect blood to achieve condensation of the blood braid in a non-use state, reduce the overall volume, and facilitate the packaging work of the staff. Utility Model Content

[0005] In view of the above defects or improvement needs of the prior art, the utility model provides a medical parallel sample blood braid application system, which adopts a technical solution combining a sample bag and a parallel catheter to replace the original solution, and designs a blood braid vacuum curling structure as the initial state, which not only greatly shortens the length of the original blood braid, but also eliminates the blood braid winding step after blood collection, thereby improving the preparation efficiency of the sample blood braid.

[0006] In order to achieve the above-mentioned purpose, a medical parallel blood sample retention application system is provided, comprising:

[0007] A blood braid sample retention device connected in series to a connecting catheter, and a pressure extrusion device for assisting the blood braid sample retention device in unfolding; the blood braid sample retention device is located between the leukocyte filter disk and the leukocyte filter blood bag to connect the catheter section;

[0008] The blood braid sample retention device comprises a sample retention bag connected in series to a connecting catheter, a cutting point and a hot pressing point respectively arranged at the input and output pipe openings of the sample retention bag, and a vacuum curling catheter assembly connected to the side of the sample retention bag; the capacity of the sample retention bag is 3ml to 5ml;

[0009] The vacuum curling catheter assembly comprises a front end connecting tube connected to the side of the sample bag, a vacuum curling tube connected to the other end of the front end connecting tube, and a pipeline switch arranged between the front end connecting tube and the vacuum curling tube.

[0010] Preferably, the number of the vacuum curling catheter assemblies is 3 to 5 groups.

[0011] Preferably, the vacuum curled tube has a length of 8 to 12 mm and a diameter of 0.8 to 1.2 mm.

[0012] Preferably, the sample bag comprises:

[0013] A diaphragm is provided inside for chamber separation, and the chambers on the left and right sides of the diaphragm are connected through a connecting cavity channel provided on the top of the diaphragm;

[0014] The inlet pipeline of the sample bag is connected to the top of the right chamber, and the outlet pipeline of the sample bag is connected to the bottom of the left chamber; the inlet pipeline and the outlet pipeline of the sample bag are staggered with each other.

[0015] Preferably, the pressure extrusion device comprises:

[0016] A fixed seat body, a bearing assembly longitudinally slidably connected to the top of the fixed seat body and filled with a blood braid sample retention device, and a transmission assembly arranged inside the bearing assembly for pushing forward and squeezing the sample retention bag; the fixed seat body and the bearing assembly are elastically connected via a second thrust spring;

[0017] The fixed seat body includes a bottom plate, a slide groove vertical plate fixedly arranged on the upper left side of the bottom plate, and a first longitudinal slide groove longitudinally opened on the slide groove vertical plate; the bearing component maintains a sliding connection with the first longitudinal slide groove.

[0018] Preferably, the bearing assembly comprises:

[0019] A second longitudinal slide groove provided between the first longitudinal clamping plate and the second longitudinal slide groove, a longitudinal limit block provided at the lower end of the first longitudinal clamping plate and slidably connected to the first longitudinal slide groove; the slide groove vertical plate is slidably connected to the second longitudinal slide groove;

[0020] The first transverse clamping plate and the second transverse clamping plate are respectively and transversely fixedly connected to the upper ends of the first longitudinal clamping plate and the second longitudinal slide groove, and the transverse slide groove is arranged between the first transverse clamping plate and the second transverse clamping plate; the first transverse clamping plate and the second transverse clamping plate are fixedly connected by a positioning connecting plate, and the transmission assembly is arranged inside the transverse slide groove;

[0021] A bottom carrier plate is transversely fixedly connected to the lower end of the second longitudinal slide groove; a blood braid sample retention device is loaded on the top of the bottom carrier plate, and the bottom of the bottom carrier plate is elastically connected to the top of the bottom plate through the second thrust spring.

[0022] Preferably, the transmission assembly comprises:

[0023] A longitudinal rack disposed above the vertical plate of the slide groove, a protruding notch to prevent the longitudinal rack from interfering with the first transverse clamping plate, a gear meshing and transmission-connected with the longitudinal rack, a transverse screw rod coaxially fixedly connected with the gear rod and fixed in the transverse slide groove through a bearing seat, a nut block helically connected with the transverse screw rod, a transverse protruding rod horizontally fixedly connected to both sides of the nut block, an end positioning block fixedly connected to the end of the transverse protruding rod, and a buffer assembly disposed below the end positioning block;

[0024] A transverse connecting rod is horizontally fixedly connected to the lower end of the buffer assembly, and a rolling extrusion wheel is coaxially rotatably connected to the transverse connecting rod.

[0025] Preferably, the buffer assembly comprises:

[0026] A motion guide column fixedly connected to the bottom of the end positioning block, a longitudinal slide bar fixedly arranged to be nested with the motion guide column and maintained in sliding connection, a positioning part arranged on the longitudinal slide bar, and a first thrust spring connecting the lower end of the motion guide column and the positioning part.

[0027] In general, the above technical solutions conceived by the utility model can achieve the following beneficial effects compared with the prior art:

[0028] (1) The utility model is a medical parallel blood sample braid application system, which adopts a technical solution combining a sample bag and a parallel catheter to replace the original solution, and designs a blood braid vacuum curling structure as the initial state, which not only greatly shortens the length of the original blood braid, but also eliminates the blood braid winding step after blood collection, thereby improving the preparation efficiency of the blood sample braid;

[0029] (2) The utility model is a medical parallel blood sample application system, which solves the problem that the sample bag cannot be filled when the blood sample device is suspended and prepared by staggering the inlet and outlet of the sample bag longitudinally, using a diaphragm to separate the inlet and outlet chambers, and connecting the inlet and outlet chambers at the highest point of the diaphragm. When in use, blood enters the inlet chamber from the inlet, and at this time, under the action of the diaphragm, it will not enter the outlet chamber and flow into the leukofilter bag; when the blood fills the inlet chamber, the subsequent blood will flow into the outlet chamber from the connection at the top of the diaphragm and enter the leukofilter bag;

[0030] (3) The utility model is a medical parallel type sample blood braid application system, which realizes the technical effect of completely squeezing out the blood in the sample bag by manually pressing up and down through the organic combination of the screw transmission mechanism, the gear rack transmission mechanism and the elastic element. Compared with the method of directly pressing the sample bag, the device ensures that the limited blood in the sample bag is fully squeezed out by pushing the roller forward to squeeze, which is helpful for the subsequent blood braid detection work. At the same time, the consistency of the squeezing effect is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a diagram of the preparation process of a conventional blood braid;

[0032] Figure 2 This is a diagram of a blood braid preparation process of a medical parallel type blood braid sample application system according to an embodiment of the utility model;

[0033] Figure 3 A is a partial enlarged view of a medical parallel blood sample retention application system according to an embodiment of the utility model;

[0034] Figure 4This is the first embodiment of a blood braid sample retaining device of a medical parallel blood braid sample retaining application system of the utility model;

[0035] Figure 5 This is the second embodiment of the blood braid sample retention device of the medical parallel blood braid sample retention application system of the utility model;

[0036] Figure 6 This is a schematic diagram of the internal structure of a pressure-driven extrusion device of a medical parallel blood sample retention application system according to an embodiment of the utility model;

[0037] Figure 7 This is a partial structural schematic diagram of a pressure-driven extrusion device of a medical parallel blood sample retention application system according to an embodiment of the utility model;

[0038] In all the drawings, the same reference numerals represent the same technical features, specifically: 101-hanging rod, 102-desktop, 210-blood collection bag, 220-leukocyte filter disk, 230-connecting catheter, 240-leukocyte filter bag, 3-blood braid sample retention device, 300-sample bag, 301-cut-off point, 302-hot pressing point, 311-first sample bag inlet, 312-first sample bag outlet, 313-first sample bag outlet Sample bag inner cavity, 320-vacuum curling catheter assembly, 321-front end connecting tube, 322-vacuum curling tube, 323-pipeline switch, 331-second sample bag inlet, 332-second sample bag outlet, 333-second sample bag inner cavity, 334-connecting cavity channel, 335-diaphragm, 4-pressing extrusion device, 410-fixed seat, 411-bottom plate, 412-slide plate, 413-first longitudinal slide, 4 20-movement bearing body, 421-first longitudinal clamp, 422-longitudinal limit block, 423-first transverse clamp, 424-positioning connecting plate, 425-second transverse clamp, 426-second longitudinal clamp, 427-bottom carrier plate, 428-bottom baffle, 429-top baffle, 4210-second longitudinal slide, 4211-transverse slide, 4212-compartment, 4213-extending notch, 430-transmission Dynamic assembly, 431-longitudinal rack, 432-gear, 433-transverse screw, 434-bearing seat, 435-nut block, 436-transverse extension rod, 437-end positioning block, 438-motion guide column, 4380-guide groove, 439-longitudinal slide bar, 4310-first thrust spring, 4311-positioning part, 4312-transverse connecting rod, 4313-rolling extrusion wheel, 440-second thrust spring. DETAILED DESCRIPTION

[0039] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0042] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0043] like Figures 1 to 7 As shown, in an embodiment of the utility model, a medical parallel blood sample retention application system comprises:

[0044] A blood braid sample retaining device 3 connected in series to the connecting catheter 230, and a pressure extrusion device 4 for assisting the blood braid sample retaining device 3 to be unfolded; the blood braid sample retaining device 3 is located in the connecting catheter 230 section between the leukocyte filter disk 220 and the leukocyte filter bag 240;

[0045] The blood braid sample retention device 3 comprises a sample retention bag 300 connected in series to the connecting catheter 230, a cut-off point 301 and a hot pressing point 302 respectively arranged at the input and output ports of the sample retention bag 300, and a vacuum curling catheter assembly 320 connected to the side of the sample retention bag 300; the capacity of the sample retention bag 300 is 3ml to 5ml;

[0046] The vacuum curling catheter assembly 320 includes a front end connecting tube 321 connected to the side of the sample bag 300, a vacuum curling tube 322 connected to the other end of the front end connecting tube 321, and a pipeline switch 323 provided between the front end connecting tube 321 and the vacuum curling tube 322.

[0047] In the embodiment of the utility model, a technical solution combining a sample bag and a parallel catheter is adopted to replace the original solution, and a blood braid vacuum curling structure is designed as the initial state, which not only greatly shortens the original blood braid length, but also eliminates the blood braid winding step after blood collection, thereby improving the preparation efficiency of the sample blood braid. When in use, first hang the blood collection bag 211 on the hanging rod 101, and place the leukocyte filter bag 240 and the blood braid sample retention device 3 flat on the table. Under the action of gravity, the blood in the blood collection bag 211 flows through the leukocyte filter disk 220 through the connecting catheter 230, and then enters the sample bag 300 of the blood braid sample retention device 3. The original state of the blood braid sample retention device 3 before use is that the pipeline switch 323 is in a closed state, and the vacuum curling catheter assembly 320 is attached to the side of the sample bag 300; then, when the sample bag 300 is full of blood, it flows into the filter disk 220. white blood bag 240; then, the cutting point 301 is heat-sealed and disconnected, and the heat-pressing point 302 is heat-sealed to complete the blood braid preparation work; then, when the blood braid is used for detection work, the vacuum curled blood braid is flattened, and the pipeline switch 323 is manually opened, and the internal blood is squeezed into the blood braid by pressing the sample bag 300, and then the pipeline switch 323 is manually closed, and the blood braid can be used once; then, when the blood braid is used for detection work again, the remaining vacuum curled blood braids can be used to repeat the above operation to complete the blood braid use operation.

[0048] like Figures 3 to 5 As shown, in the embodiment of the present utility model, the number of the vacuum curling catheter assemblies 320 is 3 to 5 groups.

[0049] In the embodiment of the utility model, the vacuum curling tube 322 is 8-12 mm long and has a tube diameter of 0.8-1.2 mm.

[0050] like Figure 5 As shown, in the embodiment of the utility model, the sample bag 300 includes:

[0051] A diaphragm 335 is provided inside for chamber separation, and the chambers on the left and right sides of the diaphragm 335 are connected through a connecting cavity channel 334 provided on the top of the diaphragm 335;

[0052] The inlet pipeline of the sample bag 300 is connected to the top of the right chamber, and the outlet pipeline of the sample bag 300 is connected to the bottom of the left chamber; the inlet pipeline and the outlet pipeline of the sample bag 300 are staggered with each other.

[0053] In the embodiment of the utility model, the problem that the sample bag 300 cannot be filled when the blood sample device 3 is suspended and prepared is solved by staggering the inlet and outlet of the sample bag 300 in the longitudinal direction, separating the inlet and outlet chambers with a diaphragm, and connecting the inlet and outlet chambers at the highest point of the diaphragm. When in use, blood enters the inlet chamber from the inlet, and at this time, under the action of the diaphragm, it will not enter the outlet chamber and flow into the leukofilter bag; when the blood fills the inlet chamber, the subsequent blood will flow into the outlet chamber from the connection at the top of the diaphragm and enter the leukofilter bag.

[0054] like Figure 6 and Figure 7 As shown, in the embodiment of the utility model, the pressing extrusion device 4 comprises:

[0055] A fixed seat body 410, a bearing assembly 420 longitudinally slidably connected to the top of the fixed seat body 410 and filled with a blood braid sample retention device 3, and a transmission assembly 430 arranged inside the bearing assembly 420 for pushing forward and squeezing the sample retention bag 300; the fixed seat body 410 and the bearing assembly 420 are elastically connected via a second thrust spring 440;

[0056] The fixed seat body 410 includes a bottom plate 411, a slide groove vertical plate 412 fixedly disposed on the upper left of the bottom plate 411, and a first longitudinal slide groove 413 longitudinally opened on the slide groove vertical plate 412; the bearing assembly 420 maintains a sliding connection with the first longitudinal slide groove 413.

[0057] like Figure 6 and Figure 7 As shown, in the embodiment of the present utility model, the bearing assembly 420 includes:

[0058] The second longitudinal slide groove 4210 is provided between the first longitudinal clamping plate 421 and the second longitudinal slide groove 4210, and the longitudinal limit block 422 is provided at the lower end of the first longitudinal clamping plate 421 and is slidably connected to the first longitudinal slide groove 413; the slide groove vertical plate 412 is slidably connected to the second longitudinal slide groove 4210;

[0059] The first transverse clamping plate 423 and the second transverse clamping plate 425 are respectively and transversely fixedly connected to the first longitudinal clamping plate 421 and the upper end of the second longitudinal slide 4210, and the transverse slide 4211 is arranged between the first transverse clamping plate 423 and the second transverse clamping plate 425; the first transverse clamping plate 423 and the second transverse clamping plate 425 are fixedly connected by the positioning connecting plate 424, and the transmission assembly 430 is arranged inside the transverse slide 4211;

[0060] A bottom carrier plate 427 is transversely fixedly connected to the lower end of the second longitudinal slide groove 4210; a blood braid sample retention device 3 is loaded on the top of the bottom carrier plate 427, and the bottom of the bottom carrier plate 427 is elastically connected to the top of the bottom plate 411 through the second thrust spring 440.

[0061] like Figure 6 and Figure 7 As shown, in the embodiment of the present utility model, the transmission assembly 430 includes:

[0062] A longitudinal rack 431 disposed above the slide groove vertical plate 412, a protruding notch 4213 for preventing the longitudinal rack 431 from interfering with the first transverse clamping plate 423, a gear 432 meshingly connected to the longitudinal rack 431, a transverse screw rod 433 coaxially fixedly connected to the gear 432 and fixed in the transverse slide groove 4211 through a bearing seat 434, a nut block 435 helically connected to the transverse screw rod 433, a transverse protruding rod 436 horizontally fixedly connected to both sides of the nut block 435, an end positioning block 437 fixedly connected to the end of the transverse protruding rod 436, and a buffer assembly disposed below the end positioning block 437;

[0063] A transverse connecting rod 4312 horizontally fixedly connected to the lower end of the buffer assembly, and a rolling extrusion wheel 4313 coaxially rotatably connected to the transverse connecting rod 4312.

[0064] like Figure 7 As shown, the buffer assembly comprises:

[0065] A motion guide column 438 fixedly connected to the lower side of the end positioning block 437, a longitudinal slide bar 439 fixedly arranged to be nested with and slidably connected to the motion guide column 438, a positioning portion 4311 arranged on the longitudinal slide bar 439, and a first thrust spring 4310 connecting the lower end of the motion guide column 438 and the positioning portion.

[0066] In the embodiment of the utility model, through the organic combination of the screw transmission mechanism, the gear rack transmission mechanism and the elastic element, the technical effect of completely squeezing out the blood in the sample bag 300 by manually pressing up and down is achieved. Compared with the method of directly pressing the sample bag 300, the device ensures the full squeezing out of the limited blood in the sample bag 300 by pushing the roller forward to extrude, which is helpful for the subsequent blood braid detection work, and at the same time, improves the consistency of the squeezing effect.

[0067] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present application, and these improvements and variations should also be regarded as the protection scope of the present application.

Claims

1. A medical parallel blood sample retention application system, characterized in that: include: A blood braid sample retention device (3) connected in series to the connecting catheter (230), and a pressure extrusion device (4) for assisting the blood braid sample retention device (3) in unfolding; the blood braid sample retention device (3) is located in the connecting catheter (230) section between the leukocyte filter disc (220) and the leukocyte filter bag (240); The blood braid sample retention device (3) comprises a sample retention bag (300) connected in series to a connecting catheter (230), a cut-off point (301) and a hot pressing point (302) respectively arranged at the input and output pipe openings of the sample retention bag (300), and a vacuum curling catheter assembly (320) connected to the side of the sample retention bag (300); the capacity of the sample retention bag (300) is 3ml to 5ml; The vacuum curling catheter assembly (320) comprises a front end connecting tube (321) connected to the side of the sample bag (300), a vacuum curling tube (322) connected to the other end of the front end connecting tube (321), and a pipeline switch (323) provided between the front end connecting tube (321) and the vacuum curling tube (322).

2. A medical parallel blood sample retention and application system according to claim 1, characterized in that: The number of the vacuum curling catheter assemblies (320) is 3 to 5 groups.

3. A medical parallel blood sample retention and application system according to any one of claims 1 or 2, characterized in that: The vacuum curling tube (322) has a length of 8 to 12 mm and a tube diameter of 0.8 to 1.2 mm.

4. A medical parallel blood sample retention application system according to claim 3, characterized in that: The sample retention bag (300) comprises: A diaphragm (335) is provided inside for separating chambers, and the chambers on the left and right sides of the diaphragm (335) are connected via a cavity connecting channel (334) provided on the top of the diaphragm (335); The inlet pipeline of the sample bag (300) is connected to the top of the right chamber, and the outlet pipeline of the sample bag (300) is connected to the bottom of the left chamber; the inlet pipeline and the outlet pipeline of the sample bag (300) are staggered.

5. A medical parallel blood sample retention and application system according to claim 4, characterized in that: The pressure extrusion device (4) comprises: A fixed seat body (410), a bearing assembly (420) longitudinally slidably connected to the top of the fixed seat body (410) and filled with a blood braid sample retention device (3), and a transmission assembly (430) arranged inside the bearing assembly (420) and used for pushing forward to squeeze the sample retention bag (300); the fixed seat body (410) and the bearing assembly (420) are elastically connected via a second thrust spring (440); The fixed seat body (410) comprises a bottom plate (411), a slide groove vertical plate (412) fixedly arranged on the upper left of the bottom plate (411), and a first longitudinal slide groove (413) longitudinally opened on the slide groove vertical plate (412); the bearing assembly (420) maintains a sliding connection with the first longitudinal slide groove (413).

6. A medical parallel blood sample retention and application system according to claim 5, characterized in that: The bearing assembly (420) comprises: A second longitudinal slide groove (4210) provided between the first longitudinal clamping plate (421) and the second longitudinal slide groove (4210), and a longitudinal limit block (422) provided at the lower end of the first longitudinal clamping plate (421) and maintaining a sliding connection with the first longitudinal slide groove (413); the slide groove vertical plate (412) and maintaining a sliding connection with the second longitudinal slide groove (4210); A first transverse clamping plate (423) and a second transverse clamping plate (425) which are respectively transversely fixedly connected to the first longitudinal clamping plate (421) and the upper end of the second longitudinal slide groove (4210), and a transverse slide groove (4211) provided between the first transverse clamping plate (423) and the second transverse clamping plate (425); the first transverse clamping plate (423) and the second transverse clamping plate (425) are fixedly connected via a positioning connecting plate (424), and the transmission assembly (430) is provided inside the transverse slide groove (4211); A bottom carrier plate (427) is transversely fixedly connected to the lower end of the second longitudinal slide groove (4210); a blood braid sample retention device (3) is loaded on the top of the bottom carrier plate (427), and the bottom of the bottom carrier plate (427) is elastically connected to the top of the bottom plate (411) through the second thrust spring (440).

7. A medical parallel blood sample retention and application system according to claim 6, characterized in that: The transmission assembly (430) comprises: A longitudinal rack (431) disposed above the slide groove vertical plate (412), a protruding notch (4213) for preventing the longitudinal rack (431) from interfering with the first transverse clamping plate (423), a gear (432) meshingly connected to the longitudinal rack (431), a transverse screw rod (433) coaxially fixedly connected to the gear (432) and fixed in the transverse slide groove (4211) through a bearing seat (434), a nut block (435) helically connected to the transverse screw rod (433), a transverse protruding rod (436) horizontally fixedly connected to both sides of the nut block (435), an end positioning block (437) fixedly connected to the end of the transverse protruding rod (436), and a buffer assembly disposed below the end positioning block (437); A transverse connecting rod (4312) horizontally fixedly connected to the lower end of the buffer assembly, and a rolling extrusion wheel (4313) coaxially rotatably connected to the transverse connecting rod (4312).

8. A medical parallel blood sample retention and application system according to claim 7, characterized in that: The buffer assembly comprises: A motion guide column (438) fixedly connected to the lower side of the end positioning block (437), a longitudinal slide bar (439) fixedly arranged to be nested with and slidably connected to the motion guide column (438), a positioning portion (4311) arranged on the longitudinal slide bar (439), and a first thrust spring (4310) connecting the lower end of the motion guide column (438) and the positioning portion.

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