Blood bag clamping device

Abstract

The present application discloses a blood bag clamping device, which relates to the technical field of blood separation. The blood bag clamping device of the present application includes a fixed support, a clamping structure, a clamping member and a moving mechanism. The fixed support includes a column and a bottom plate arranged at the bottom of the column, a clamping structure connecting mechanism and a first clamping plate and a second clamping plate arranged opposite to each other, and the connecting mechanism connects the second clamping plate to the first clamping plate; the clamping member is used to clamp the second clamping plate; the moving mechanism is arranged on the fixed support and is transmission-connected with the clamping member, and is used to drive the clamping member to move in a direction close to or away from the column, wherein, when the clamping structure is arranged between the clamping member and the column, the first clamping plate approaches or abuts against the column, and the clamping member can drive the second clamping plate to move relatively in a direction close to or away from the first clamping plate. Therefore, the present application can clamp and squeeze the blood bag by the first clamping plate, the second clamping plate and the clamping member.

Description

Technical Field

[0001] The present application relates to the technical field of blood separation, and in particular to a blood bag clamping device. Background Art

[0002] After centrifugation, blood is divided into three layers: the top layer is the plasma layer, the bottom layer is the red blood cell layer, and the middle layer is the buffy coat layer, which mainly includes platelets and white blood cells. The separated blood components are widely used in clinical treatment. Since the components in whole blood play different roles in the human body, sometimes hospitals or blood stations only need to provide patients with one or two components of blood according to the needs of disease treatment, so as to achieve multiple uses of one blood and better save blood resources. Therefore, high-quality blood component separation is particularly important. Summary of the invention

[0003] The purpose of the present application is to provide a blood bag clamping device, which can clamp a blood bag by means of a first clamping plate and a second clamping plate.

[0004] The embodiment of the present application is implemented as follows:

[0005] A blood bag clamping device includes a fixed support, a clamping structure, a clamping piece and a moving mechanism, wherein the fixed support includes a column and a base plate arranged at the bottom of the column, the clamping structure connecting mechanism and a first clamping plate and a second clamping plate arranged oppositely, and the connecting mechanism connects the second clamping plate to the first clamping plate; the clamping piece is used to clamp the second clamping plate; the moving mechanism is arranged on the fixed support and is transmission-connected to the clamping piece, and is used to drive the clamping piece to move toward or away from the column, wherein when the clamping structure is arranged between the clamping piece and the column, the first clamping plate approaches or abuts against the column, and the clamping piece can drive the second clamping plate to move relative to the first clamping plate.

[0006] In one embodiment, the first clamping plate and the second clamping plate are arranged in parallel.

[0007] In one embodiment, the moving mechanism includes a tension turntable, a clamping member, at least one first guide rod, at least one first guide hole, at least one support rod and at least one elastic member. The tension turntable is arranged on the base plate, and a pull rope is arranged on the tension turntable; the clamping member is connected to the pull rope, and at least one first guide hole is arranged on the clamping member; one end of the first guide rod is connected to the column, and the other end is passed through the first guide hole, and the support rod is connected to the clamping member; one end of the elastic member is connected to the support rod, and the other end is connected to the column.

[0008] In one embodiment, a pressing plate is provided on the pressing member, and the pressing plate is used to abut against the second clamping plate.

[0009] In one embodiment, the second clamping plate has a third surface facing the pressure plate, and the pressure plate has a fourth surface facing the second clamping plate; a first limit strip is convexly provided on the third surface, and a second limit strip is convexly provided on the fourth surface, and the first limit strip and the second limit strip are staggered with each other; when the third surface and the fourth surface are in contact, the side of the first limit strip can be abutted against the side of the pressure plate, and the side of the second limit strip can be abutted against the side of the second clamping plate.

[0010] In one embodiment, the first guide rod, the support rod and the tension turntable are all arranged on one side of the clamping structure, and the pull rope and the pressure plate are respectively connected to two ends of the pressing member.

[0011] In one embodiment, two first guide rods are provided, and the two first guide rods are arranged at an interval from each other. Accordingly, two first guide holes are provided.

[0012] In one embodiment, the pressing member is provided with a connecting hole for connecting the pull rope, and the connecting hole is provided between the two first guide holes.

[0013] In one embodiment, the fixed support has a cavity and a first communication hole communicating with the cavity, the elastic member is arranged in the cavity, and the support rod passes through the first communication hole and is connected to the elastic member; a first support rod is fixed in the cavity, one end of the elastic member is connected to the support rod, and the other end is connected to the first support rod;

[0014] In one embodiment, two support rods are provided, and the two support rods are arranged at an interval from each other. Accordingly, two elastic members are provided.

[0015] In one embodiment, the fixed support has a second communicating hole communicating with the cavity, a second support rod is fixed in the cavity, and the first guide rod passes through the second communicating hole and is connected to the second support rod.

[0016] In one embodiment, the bottom plate and the columns are arranged perpendicular to each other.

[0017] In one embodiment, the pulling turntable includes a fixed bracket, a rotating shaft, a rotating wheel and a rocker arm, wherein the fixed bracket is arranged on the bottom plate; the rotating shaft is rotatably arranged on the fixed bracket; the rotating wheel is arranged on the rotating shaft, and the pull rope is arranged on the rotating wheel; and the rocker arm is arranged on the rotating shaft.

[0018] In one embodiment, a positioning groove is provided on the upper surface of the fixing bracket, the rotating wheel is arranged in the positioning groove, and an axial hole communicating with the positioning groove is opened on each of the two opposite side surfaces of the fixing bracket, and the rotating shaft can rotatably pass through the two axial holes.

[0019] In one embodiment, the connecting mechanism includes at least one second guide hole and at least one second guide rod, the second guide hole is arranged on the second clamping plate; the second guide rod is arranged on the first clamping plate, one end of the second guide rod is connected to the first clamping plate, and the other end is passed through the second guide hole.

[0020] In one embodiment, a plurality of second guide rods are provided, and the plurality of second guide rods are arranged at intervals from each other. Accordingly, a plurality of second guide holes are provided.

[0021] In one embodiment, a hanging portion is provided at the bottom of the second clamping plate, and at least one fixing groove for fixing the blood bag catheter is provided on the hanging portion.

[0022] The beneficial effects of this application compared with the prior art are:

[0023] A space for clamping a blood bag is formed between the first clamp and the second clamp of the present application. The present application can drive the pressing member to move by the moving mechanism, and the movement of the pressing member can press the second clamp, so that the blood bag is fixed between the first clamp and the second clamp. Therefore, the present application can clamp the blood bag by the first clamp and the second clamp.

[0024] The present application can also adjust the gap between the first clamp and the second clamp by controlling the moving distance of the clamp through the moving mechanism, thereby controlling the size of the space to squeeze or relax the blood bag in the space. Therefore, the present application can clamp and squeeze the blood bag through the first clamp, the second clamp and the clamp, so that the layered blood in the blood bag can be sequentially transported to other storage bags to achieve blood separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 This is a schematic structural diagram of a blood bag clamping device according to an embodiment of the present application.

[0027] Figure 2 This is a partial structural schematic diagram of a blood bag clamping device according to an embodiment of the present application.

[0028] Figure 3 This is a schematic structural diagram of a blood bag clamping device according to an embodiment of the present application.

[0029] Figure 4 This is a front view of a blood bag clamping device according to an embodiment of the present application.

[0030] Figure 5 An embodiment of the present application is shown Figure 4 AA direction cross-sectional view.

[0031] Figure 6An exploded view of a portion of the structure of a blood bag clamping device according to an embodiment of the present application.

[0032] Figure 7 This is a schematic structural diagram of a clamping structure shown in an embodiment of the present application.

[0033] Figure 8 This is a front view of a clamping structure shown in one embodiment of the present application.

[0034] Fig. 9 An embodiment of the present application is shown Figure 8 BB direction cross-sectional view.

[0035] Fig.10 This is a partial structural schematic diagram of a blood bag clamping device according to an embodiment of the present application.

[0036] Icons: 1-blood bag clamping device; 100-fixed support; 110-cavity; 130-first connecting hole; 120-second connecting hole; 150-first support rod; 140-second support rod; 160-first partition; 170-second partition; 180-connecting piece; 101-column; 102-bottom plate; 200-clamping structure; 210-first clamping plate; 211-first surface; 220-second clamping plate; 221-second surface; 222-hanging part; 223-fixing groove; 230-connecting mechanism; 231-second guide hole; 232-second guide rod; 2321-special-shaped rod; 2322-light rod; 240-limiting piece; 241-limiting sleeve; 242-gasket; 300-pressing member; 310-connecting hole; 320-pressing plate; 321-fixing plate; 322-first fastener; 400-moving mechanism; 410-tension turntable; 411-pull rope; 412-fixing bracket; 413-positioning groove; 414-axis hole; 415-rotating axis; 4151-square axis head; 416-rotating wheel; 417-rocker arm; 418-second sleeve; 419-second fastener; 420-first guide hole; 430-first guide rod; 431-first sleeve; 440-support rod; 450-elastic member; 224-third surface; 225-first limit strip; 324-fourth surface; 325-second limit strip. DETAILED DESCRIPTION

[0037] The terms “first”, “second”, “third”, etc. are only used for distinguishing descriptions and do not indicate the order of arrangement, nor can they be understood as indicating or implying relative importance.

[0038] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0039] In the description of the present application, it should be noted that the terms "inside", "outside", "left", "right", "up", "down", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the products of the present application are usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0040] In the description of this application, unless otherwise clearly specified and limited, the terms "set", "installed", "connected" and "connected" 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 an indirect connection through an intermediate medium, and it can be the internal connection of two elements.

[0041] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings.

[0042] Please refer to Figure 1 , which is a structural schematic diagram of a blood bag clamping device 1 shown in an embodiment of the present application. A blood bag clamping device 1 includes a fixed support 100, a clamping structure 200, a pressing member 300 and a moving mechanism 400. The fixed support 100 includes a column 101 and a bottom plate 102 arranged at the bottom of the column 101. The bottom plate 102 and the column 101 are arranged perpendicular to each other.

[0043] The clamping structure 200 includes a connecting mechanism 230 and a first clamping plate 210 and a second clamping plate 220 which are arranged opposite to each other. The first clamping plate 210 is fixed to the fixed support 100, and the second clamping plate 220 is connected to the first clamping plate 210 through the connecting mechanism 230, and the second clamping plate 220 can move in a direction close to or away from the first clamping plate 210; the pressing member 300 is used to press the second clamping plate 220, so as to press the blood bag between the first clamping plate 210 and the second clamping plate 220; the moving mechanism 400 is arranged on the fixed support 100, and is transmission-connected with the pressing member 300, and is used to drive the pressing member 300 to move in a direction close to or away from the column 101. When the clamping structure 200 is arranged between the pressing member 300 and the column 101, the first clamping plate 210 approaches or abuts against the column 101, and the pressing member 300 can drive the second clamping plate 220 to move relatively in a direction close to or away from the first clamping plate 210.

[0044] A space for clamping a blood bag is formed between the first clamping plate 210 and the second clamping plate 220 of this embodiment. In this embodiment, the pressing member 300 can be driven to move by the moving mechanism 400, and the movement of the pressing member 300 can press the second clamping plate 220, so that the blood bag is fixed between the first clamping plate 210 and the second clamping plate 220. Therefore, in this embodiment, the blood bag can be clamped by the first clamping plate 210 and the second clamping plate 220.

[0045] This embodiment can also control the moving distance of the pressing member 300 through the moving mechanism 400 to adjust the gap between the first clamping plate 210 and the second clamping plate 220, thereby controlling the size of the space to squeeze or relax the blood bag in the space. Therefore, this embodiment can sequentially transfer the stratified blood in the blood bag to other storage bags by squeezing to achieve blood separation. Therefore, this embodiment can be applied to the compression separation of blood bags, such as the compression separation of umbilical cord blood bags.

[0046] In one operation, a blood bag is placed between the first clamping plate 210 and the second clamping plate 220, and the clamping structure 200 holding the blood bag is placed in a centrifuge for centrifugation. After centrifugation, the clamping structure 200 holding the blood bag is taken out and placed between the pressing member 300 and the column 101, wherein the first clamping plate 210 faces the column 101, and the second clamping plate 220 faces the pressing member 300. The pressing member 300 is driven by the moving mechanism 400 to move toward the direction close to the column 101, so that the pressing member 300 and the second clamping plate 220 are against each other. The first clamping plate 210 is pressed against the column 101, so that the clamping structure 200 is clamped between the clamping piece 300 and the column 101, and then the clamping piece 300 is driven to move toward the column 101 through the moving mechanism 400, so that the second clamping plate 220 moves along with the clamping piece 300 toward the first clamping plate 210, and the gap between the first clamping plate 210 and the second clamping plate 220 gradually decreases, which produces a squeezing force on the blood bag, thereby prompting the layers in the blood bag to be transported out by the blood tube to achieve the effect of separating the blood.

[0047] In this embodiment, the connection mechanism 230 is a rod hole matching structure or a slide rail and slider matching structure, and the first clamping plate 210 and the second clamping plate 220 are arranged in parallel. Such an arrangement allows uniform force when squeezing the blood bag, thereby improving blood utilization.

[0048] In another embodiment, the connecting mechanism 230 is a hinge or other mechanism, the first splint 210 and the second splint 220 are hinged, and the first splint 210 and the second splint 220 are relatively inclined. Then, when the first splint 210 and the second splint 220 squeeze the blood bag, the force application surface is "V" shaped, thereby improving the blood separation efficiency.

[0049] Please refer to Figure 2, which is a partial structural diagram of a blood bag clamping device 1 shown in an embodiment of the present application. The moving mechanism 400 includes a tension turntable 410, a pressing member 300, at least one first guide hole 420, at least one first guide rod 430, at least one support rod 440 and at least one elastic member 450. A pull rope 411 is provided on the tension turntable 410; the pressing member 300 is connected to the pull rope 411, and the first guide hole 420 is provided on the pressing member 300. One end of the first guide rod 430 is connected to the fixed support 100, and the other end is penetrated into the first guide hole 420. The support rod 440 is connected to the pressing member 300; one end of the elastic member 450 is connected to the support rod 440, and the other end is connected to the fixed support 100.

[0050] A pressing plate 320 is provided on the pressing member 300. The pressing plate 320 is used to directly abut against the second clamping plate 220. The arrangement of the pressing plate 320 can increase the contact area, so that the force is evenly applied when squeezing the blood bag, thereby improving the blood utilization rate.

[0051] The column 101 of the fixed support 100 has a cavity 110 and a first connecting hole 130 communicating with the cavity 110. The elastic member 450 is arranged in the cavity 110, and the support rod 440 passes through the first connecting hole 130 and is connected to the elastic member 450; a first support rod 150 is fixed in the cavity 110, and one end of the elastic member 450 is connected to the support rod 440, and the other end is connected to the first support rod 150.

[0052] Therefore, in this embodiment, the tension of the pull rope 411 and the elastic force of the elastic member 450 drive the pressing member 300 to move toward or away from the first clamping plate 210. The cooperation between the first guide rod 430 and the first guide hole 420 can be used to limit the moving direction of the pressing member 300.

[0053] The elastic member 450 may be an elastic member such as a tension spring, a compression spring, a rubber band or an elastic rope. In this embodiment, the elastic member 450 is a tension spring. When the blood bag is not under load, the initial state of the elastic member 450 is a compressed state. When the blood bag is in a squeezed state, the pressing plate 320 and the second splint 220 are against each other, and the gap between the first splint 210 and the second splint 220 is small. At this time, the elastic member 450 is in a compressed state. When the blood bag is in a relaxed state, the pressing plate 320 and the second splint 220 are spaced apart, and the gap between the first splint 210 and the second splint 220 is large. At this time, the elastic member 450 is in a stretched state.

[0054] During an operation, the tension dial 410 is rotated to pull the pull rope 411. The tension of the pull rope 411 drives the clamping member 300 to move away from the first clamping plate 210. At this time, the gap between the first clamping plate 210 and the second clamping plate 220 is large, and the elastic member 450 is in a stretched state, so that the blood bag can be placed between the first clamping plate 210 and the second clamping plate 220. When the tension dial 410 is released, the elastic member 450 returns to the initial compressed state, and the elastic force of the elastic member 450 drives the clamping member 300 to move toward the column 101, so that the gap between the first clamping plate 210 and the second clamping plate 220 is reduced until it reaches a preset distance. The size of the preset distance can be controlled by the size of the elastic member 450, the size of the support rod 440, and the distance between the first support rod 150 and the support rod 440, so as to control whether the clamping structure 200 only generates a clamping force on the blood bag, or generates a clamping force and a squeezing force on the blood bag.

[0055] Please refer to Figure 3 , which is a schematic diagram of the structure of the blood bag clamping device 1 shown in an embodiment of the present application. The direction from the column 101 to the bottom plate 102 is defined as downward, the direction from the second clamping plate 220 to the first clamping plate 210 is defined as backward, and the direction of the length of the pressing member 300 is defined as left and right, thereby defining six directions: up, down, left, right, front and back.

[0056] The pressing member 300 is rod-shaped, wherein the pull rope 411 and the pressing plate 320 are respectively connected to the left and right ends of the pressing member 300 , and the first guide rod 430 , the support rod 440 and the tension rotating disk 410 are all arranged on one side of the clamping structure 200 .

[0057] Please refer to Figure 4 , which is a front view of a blood bag clamping device 1 shown in an embodiment of the present application. Two first guide rods 430 are provided, and the two first guide rods 430 are arranged in parallel with each other. Accordingly, two first guide holes 420 are provided. When the pressing member 300 moves, the first guide rod 430 moves relative to the first guide hole 420. The two first guide rods 430 can make the pressing member 300 have two support points, and the movement is more stable.

[0058] There are two support rods 440, which are spaced apart and arranged in parallel. Accordingly, there are two elastic members 450. If there are two support rods 440, the pressing member 300 can move more smoothly. In this embodiment, the two support rods 440 are respectively arranged on both sides of the two first guide rods 430.

[0059] The pressing member 300 is provided with a connection hole 310 for connecting the pull rope 411, and the connection hole 310 is arranged between the two first guide holes 420. The connection hole 310 can be arranged in the middle position between the two first guide holes 420, so that when the pull rope 411 pulls the pressing member 300, the force on the pressing member 300 is more uniform.

[0060] Please refer to Figure 5 , which is shown in an embodiment of the present application Figure 4 The fixed support 100 has a second connecting hole 120 communicating with the cavity 110, a second support rod 140 is fixed in the cavity 110, and the first guide rod 430 passes through the second connecting hole 120 and is connected to the second support rod 140. The second support rod 140 and the first support rod 150 are parallel.

[0061] The support rod 440 and the pressing member 300 may be integrally formed or fixed by threaded connection, welding, etc. In this embodiment, the first connecting hole 130 and the second connecting hole 120 are both cylindrical light holes. The support rod 440 and the first guide rod 430 are both cylindrical, and the axis of the support rod 440 and the axis of the first guide rod 430 are parallel to the bottom plate 102 and perpendicular to the pressing member 300. The aperture of the second connecting hole 120 is greater than or equal to the outer diameter of the first guide rod 430. The aperture of the first connecting hole 130 is greater than or equal to the outer diameter of the support rod 440.

[0062] A first sleeve 431 is disposed in each first guide hole 420 . Each first guide rod 430 is inserted into a corresponding first sleeve 431 .

[0063] A first partition plate 160 is provided in the cavity 110, dividing the cavity 110 into two small spaces on the left and right. The elastic member 450, the second support rod 140 and the first support rod 150 are all provided in the small space on the right. The first partition plate 160 is connected to the second partition plate 170 by bolt connection, welding or the like. The second partition plate 170 is also provided in the small space on the right. The second support rod 140 and the first support rod 150 are fixed to the second partition plate 170 by bolt connection, welding or the like.

[0064] During an operation, the position of the clamping structure 200 can be adjusted by adjusting or replacing the connecting member 180, so as to adjust the preset distance between the first clamping plate 210 and the second clamping plate 220 by cooperating with the elastic member 450 and the support rod 440 and other components.

[0065] Please refer to Figure 6, which is an exploded view of a part of the structure of the blood bag clamping device 1 shown in an embodiment of the present application. The pulling turntable 410 includes a fixed bracket 412, a rotating shaft 415, a rotating wheel 416 and a rocker arm 417. The fixed bracket 412 is arranged on the bottom plate 102; the rotating shaft 415 is rotatably arranged on the fixed bracket 412; the rotating wheel 416 is arranged on the rotating shaft 415, and the pull rope 411 is arranged on the rotating wheel 416; the rocker arm 417 is arranged on the rotating shaft 415.

[0066] A positioning groove 413 is provided on the upper surface of the fixed bracket 412, and the rotating wheel 416 is arranged in the positioning groove 413. The fixed bracket 412 has an axial hole 414 connected to the positioning groove 413 on both side surfaces. The rotating shaft 415 can be rotatably penetrated in the two axial holes 414.

[0067] A second sleeve 418 is disposed in each shaft hole 414, and a rotating shaft 415 is disposed in the two second sleeves 418. The end of the rotating shaft 415 is a square shaft head 4151, and the rotating shaft 415 is fixedly connected to the rocker arm 417 through the square shaft head 4151.

[0068] The rotating wheel 416 is fixed to the rotating shaft 415 via a second fastener 419. In this embodiment, the second fastener 419 is a flat key.

[0069] A connecting member 180 is provided on the column 101 , and the connecting member 180 is a bent plate fixed by welding, bolt connection or the like.

[0070] Two fixing plates 321 are provided on the pressing plate 320, and the end of the pressing member 300 is clamped between the two fixing plates 321. The pressing member 300 is connected to the two fixing plates 321 through a first fastener 322. In this embodiment, the first fastener 322 is a bolt.

[0071] If the pressing plate 320 and the pressing member 300 are connected by welding, the pressing member 300 may be deformed or bent after long-term use, so that the pressing plate 320 cannot be completely fitted with the second clamping plate 220 of the clamping structure 200, thereby affecting the clamping or squeezing effect of the blood bag. Therefore, in this embodiment, the pressing plate 320 and the pressing member 300 are connected by the first fastener 322 and the two fixing plates 321, which can extend the service life of the pressing member 300, thereby avoiding the adverse effects caused by the above-mentioned deformation problem. In addition, when the pressing member 300 is damaged, it can also be repaired by replacing the pressing member 300, avoiding the need to replace the entire blood bag clamping device 1.

[0072] Among them, the tension turntable 410 of the present application is fixed on the fixed support 100 and will not slide, so that the present application can be moved flexibly.

[0073] In an operation process, the operator presses the rocker arm 417 downward with one hand, and the gap between the first clamping plate 210 and the second clamping plate 220 is enlarged through the tension turntable 410 and the pull rope 411. The operator places the clamping structure 200 that clamps the blood bag after centrifugation between the pressing member 300 and the column 101 with the other hand, and makes the first clamping plate 210 close to or close to the column 101; the operator releases the hand pressing the rocker arm 417, and the operation of clamping or squeezing the blood bag is completed through the action of the elastic member 450. Therefore, one operator can use this embodiment to complete the operation of holding or clamping the bag, which is simple, convenient and fast.

[0074] Please refer to Figure 7 , which is a schematic diagram of the structure of the clamping structure 200 shown in an embodiment of the present application. The connecting mechanism 230 includes at least one second guide hole 231 and at least one second guide rod 232. The second guide hole 231 is provided on the second clamping plate 220; the second guide rod 232 is provided on the first clamping plate 210, one end of the second guide rod 232 is connected to the first clamping plate 210, and the other end is passed through the second guide hole 231. The cooperation between the second guide rod 232 and the second guide hole 231 can not only connect the first clamping plate 210 and the second clamping plate 220, but also can be used to limit the moving direction of the second clamping plate 220.

[0075] In another embodiment, the second guide rod 232 is disposed on the second clamping plate 220 , and the second guide hole 231 is disposed on the first clamping plate 210 .

[0076] A hanging portion 222 is provided at the bottom of the second clamping plate 220, and at least one fixing groove 223 for fixing the blood bag catheter is provided on the hanging portion 222. In this embodiment, the hanging portion 222 is located at the bottom of the second clamping plate 220, which is conducive to blood separation under the action of gravity.

[0077] Please refer to Figure 8 , which is a front view of a clamping structure 200 shown in an embodiment of the present application. A plurality of second guide rods 232 are provided, and the plurality of second guide rods 232 are arranged at intervals from each other. Accordingly, a plurality of second guide holes 231 are provided. The axis of the second guide rod 232 is perpendicular to the second clamping plate 220. The second guide rod 232 and the first clamping plate 210 are integrally formed, or fixed by welding, threaded connection, or the like.

[0078] In this embodiment, the second guide rods 232 are of two types, namely, a special-shaped rod 2321 and a smooth rod 2322 .

[0079] There are eight second guide rods 232, including four special-shaped rods 2321 and four smooth rods 2322. The four special-shaped rods 2321 are respectively arranged at the four corners of the second clamping plate 220. The outer surface of the special-shaped rods 2321 is provided with a concave-convex structure similar to a thread, and the cross section is a missing circle. The four smooth rods 2322 are arranged in a row and arranged at the top of the second clamping plate 220. The outer surface of the smooth rods 2322 is not provided with a concave-convex structure similar to a thread, and is a smooth cylindrical rod.

[0080] Please refer to Fig. 9 , which is shown in an embodiment of the present application Figure 8 The first clamping plate 210 has a first surface 211 facing the second clamping plate 220 , and the second clamping plate 220 has a second surface 221 facing the first clamping plate 210 ; four stoppers 240 are disposed on the first surface 211 and / or the second surface 221 .

[0081] The limiting member 240 includes a limiting sleeve 241 and a gasket 242 disposed at the end of the limiting sleeve 241. There are four limiting members 240, which are respectively disposed in the four second guide holes 231, and the four limiting members 240 are located at the four corners of the second clamping plate 220, matching the four special-shaped rods 2321. The outer surface of the limiting sleeve 241 is provided with a concave-convex structure similar to a thread, and the inner surface of the limiting sleeve 241 can be smooth or provided with a thread structure matching the outer surface of the special-shaped rod 2321.

[0082] When the second clamping plate 220 moves relative to the first clamping plate 210, the special-shaped rod 2321 moves in the limiting sleeve 241. When the gap between the second clamping plate 220 and the first clamping plate 210 decreases, the washer 242 of the limiting member 240 can limit the size of the minimum gap between the second clamping plate 220 and the first clamping plate 210. In one embodiment, the thickness of the washer 242, that is, the minimum gap between the second clamping plate 220 and the first clamping plate 210, is 2.5 mm.

[0083] Please refer to Fig.10 , which is a partial structural schematic diagram of a blood bag clamping device 1 according to an embodiment of the present application. The second clamping plate 220 has a third surface 224 facing the pressing plate 320 , and the pressing plate 320 has a fourth surface 324 facing the second clamping plate 220 .

[0084] The height of the pressing plate 320 is smaller than the height of the second clamping plate 220, that is, the length of the fourth surface 324 in the vertical direction is larger than the length of the third surface 224 in the vertical direction. When the pressing plate 320 is pressed against the second clamping plate 220 by the pressing member 300, the third surface 224 fits with the fourth surface 324; the pressing plate 320 covers the middle part of the second clamping plate 220, and the top and bottom ends of the second clamping plate 220 are exposed, so as to facilitate operations such as removing and inserting the catheter of the blood bag.

[0085] A first limiting strip 225 is protruded on the third surface 224 , and the first limiting strip 225 is close to the top of the second clamping plate 220 . When the third surface 224 and the fourth surface 324 are in contact with each other, the side of the first limiting strip 225 can abut against the side of the pressure plate 320 , and the first limiting strip 225 can limit the up and down movement of the pressure plate 320 .

[0086] In another embodiment, two first limiting strips 225 are provided, respectively close to the top and bottom ends of the second clamping plate 220 .

[0087] Two second limiting strips 325 are convexly disposed on the fourth surface 324, and the two second limiting strips 325 are respectively disposed at the left and right ends of the pressing plate 320, and the length of the pressing plate 320 along the left and right direction is greater than the length of the second clamping plate 220 along the left and right direction, that is, the length of the fourth surface 324 along the left and right direction is greater than the length of the third surface 224 along the left and right direction. Among them, the first limiting strip 225 and the second limiting strip 325 are staggered with each other, and in this embodiment, the length direction of the first limiting strip 225 is perpendicular to the length direction of the second limiting strip 325.

[0088] When the third surface 224 and the fourth surface 324 are in contact, the side of the second limiting strip 325 can abut against the side of the second clamping plate 220, and the second clamping plate 220 is sandwiched between the two second limiting strips 325. The two second limiting strips 325 can be used to limit the relative left-right movement of the pressing plate 320 and the second clamping plate 220. When the pressing plate 320 is pressed against the second clamping plate 220, the second limiting strip 325 can also abut against the connecting member 180 or the column 101, so as to limit the size of the minimum gap between the second clamping plate 220 and the first clamping plate 210.

[0089] The pressing plate 320 and the second clamping plate 220 may both be made of transparent materials, thereby facilitating observation of the clamping and squeezing of the blood bag.

[0090] It should be noted that, in the absence of conflict, the features in the embodiments of this application may be combined with each other.

[0091] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A blood bag clamping device, characterized in that: include: A fixed support, comprising a column and a bottom plate arranged at the bottom of the column; The clamping structure comprises a connecting mechanism and a first clamping plate and a second clamping plate arranged opposite to each other, wherein the connecting mechanism connects the second clamping plate to the first clamping plate; A pressing member, used for pressing the second clamping plate, thereby pressing the blood bag between the first clamping plate and the second clamping plate; as well as A moving mechanism, which is disposed on the fixed support and is in transmission connection with the pressing member, and is used to drive the pressing member to move toward or away from the column; The moving mechanism comprises a tension turntable, at least one first guide hole, at least one first guide rod, at least one support rod and at least one elastic member; wherein the tension turntable is arranged on the bottom plate, and a pull rope connected to the clamping member is arranged on the tension turntable; the first guide hole is arranged on the clamping member, one end of the first guide rod is connected to the column, and the other end of the first guide rod is inserted into the first guide hole; The column has a cavity and a first communication hole communicating with the cavity, the first communication hole is located on the front side wall of the cavity, and a first support rod is fixed to the rear side wall of the cavity; the elastic member is arranged in the cavity, one end of the elastic member is connected to the support rod, and the other end of the elastic member is connected to the first support rod; one end of the support rod passes through the first communication hole and is connected to the elastic member, and the other end of the support rod is connected to the pressing member; When the clamping structure is arranged between the clamping member and the column, the first clamping plate is close to or against the column, and the clamping member can drive the second clamping plate to move relatively toward or away from the first clamping plate; when the tension dial is rotated, the tension of the pull rope drives the clamping member to move toward and away from the first clamping plate to expand the gap between the first clamping plate and the second clamping plate, and the elastic member is in a stretched state; when the tension dial is released, the elastic member returns to its initial state, and the elastic force of the elastic member drives the clamping member to move toward and away from the first clamping plate to reduce the gap between the first clamping plate and the second clamping plate.

2. The blood bag clamping device according to claim 1, characterized in that: The pressing member is provided with a pressing plate, and the pressing plate is used to abut against the second clamping plate.

3. The blood bag clamping device according to claim 2, characterized in that: The second clamping plate has a third surface facing the pressing plate, and the pressing plate has a fourth surface facing the second clamping plate; A first limiting strip is convexly provided on the third surface, and a second limiting strip is convexly provided on the fourth surface, and the first limiting strip and the second limiting strip are staggered with each other; When the third surface is in contact with the fourth surface, the side surface of the first limiting strip can abut against the side surface of the pressing plate, and the side surface of the second limiting strip can abut against the side surface of the second clamping plate.

4. The blood bag clamping device according to claim 1, characterized in that: There are two first guide rods, which are spaced apart from each other. Accordingly, there are two first guide holes. The pressing member is provided with a connecting hole for connecting a draw rope, and the connecting hole is arranged between the two first guide holes.

5. The blood bag clamping device according to claim 1, characterized in that: The fixed support has a second connecting hole; a second supporting rod is fixed in the cavity, and the first guiding rod passes through the second connecting hole and is connected with the second supporting rod.

6. The blood bag clamping device according to claim 1, characterized in that: The pulling turntable comprises: A fixed bracket, arranged on the bottom plate; A rotating shaft, rotatably disposed on the fixed bracket; A rotating wheel is arranged on the rotating shaft, and the pull rope is arranged on the rotating wheel; and The rocker arm is arranged on the rotating shaft.

7. The blood bag clamping device according to any one of claims 1 to 6, characterized in that: The connecting mechanism comprises: at least one second guide hole, disposed on the second clamping plate; and At least one second guide rod is disposed on the first clamping plate, one end of the second guide rod is connected to the first clamping plate, and the other end is passed through the second guide hole.

8. The blood bag clamping device according to claim 1, characterized in that: The first clamping plate has a first surface facing the second clamping plate, and the second clamping plate has a second surface facing the first clamping plate; At least one limiting member is disposed on the first surface and / or the second surface, and the limiting member is used to limit the size of the minimum gap between the second clamping plate and the first clamping plate.

9. The blood bag clamping device according to claim 1, characterized in that: A hanging portion is provided at the bottom of the second clamping plate, and at least one fixing groove for fixing the blood bag catheter is provided on the hanging portion.

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