Air filtering structure of blood transfusion apparatus dropper

Abstract

The utility model provides an air filtering structure of a blood transfusion apparatus dropper, which relates to the technical field of blood transfusion apparatuses and comprises a blood bag, a blood transfusion tube connected to the bottom of the blood bag, a filtering disc arranged at the bottom of the blood transfusion tube, a catheter connected to the bottom of the filtering disc and a dropper connected to the bottom of the catheter. The clamping assembly is arranged between the blood transfusion tube and the filtering disc and comprises a movable groove, an extrusion block and a threaded rod; the filter assembly is arranged in the filter disc and comprises a supporting block, a filter screen and a filter membrane. Through the arrangement of the filtering assembly, tiny bubbles in blood can be isolated and discharged, the situation that gas enters the dropper, consequently, the blood liquid level is lowered to the position below the dropper and even enters the body of a patient is avoided, the problems caused by manual exhaust and the problem of air embolism are avoided, and meanwhile the clamping assembly is arranged in a matched mode, so that the safety of the patient is improved. The blood transfusion tube can be closed when the blood bag is replaced, and gas entering is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to blood transfusion device technical field, concretely is the air filter structure of blood transfusion device drip tube. BACKGROUND

[0002] Blood transfusion device is a kind of medical instrument specially designed for the safe delivery of blood or blood components from a storage container (such as a blood bag) to a patient, and the morrific drip tube is an important component of the infusion device and blood transfusion device, which is usually located at the upper part of the infusion tube, close to the liquid container, for controlling and monitoring the process of liquid flowing into the patient's body, and the design of the morrific drip tube helps to ensure safe and effective infusion.

[0003] However, during the use of the existing blood transfusion device, a small amount of air may be introduced into the bag along with the blood when the blood is collected from the blood donor and transferred to the blood transfusion bag, or sometimes it is necessary to add drugs or other liquids (such as anticoagulants) to the blood transfusion bag, and this process may also inadvertently introduce some air, resulting in the presence of tiny air bubbles in the blood being input, and as the blood is input, the air bubbles enter the drip tube, causing the liquid level of the blood to drop below the morrific drip tube, at which time manual air release is required to avoid air embolism caused by air entering the patient's body, and manual air release during blood transfusion can damage the structure of red blood cells. SUMMARY

[0004] The utility model aims at solving the shortcomings in the background art, provides the air filter structure of blood transfusion device drip tube, solves the problem of blood dropping below the morrific drip tube during blood transfusion, causing manual air release to damage the structure of red blood cells, and avoids the problem of air embolism.

[0005] By setting the filter assembly, the tiny air bubbles in the blood can be isolated and discharged, and the gas can be prevented from entering the inside of the drip tube, and by setting the clamping assembly, the blood transfusion tube can be closed when the blood bag is replaced, reducing the entry of gas.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme, an air filter structure of blood transfusion device drip tube, characterized by comprising:

[0007] A blood bag is connected to a blood transfusion tube at the bottom, a filter disc is provided at the bottom of the blood transfusion tube, a catheter is connected to the bottom of the filter disc, and a drip tube is connected to the bottom of the catheter.

[0008] A clamping assembly is arranged between the blood transfusion tube and the filter disc, and the clamping assembly comprises a movable slot, a pressing block and a threaded rod.

[0009] A filter assembly is arranged inside the filter disc, and the filter assembly comprises a supporting block, a filter screen and a filter membrane.

[0010] Further, the filter disc is internally provided with a movable groove, two extrusion blocks are arranged in the movable groove, and the blood transfusion tube penetrates the movable groove.

[0011] Further, the filter disc is internally provided with a movable groove, two extrusion blocks are arranged in the movable groove, and the blood transfusion tube penetrates the movable groove.

[0012] Further, one end of the threaded rod is connected with a knob, and one side of the extrusion block close to the blood transfusion tube is convex.

[0013] Further, the filter disc is internally provided with a movable groove, two extrusion blocks are arranged in the movable groove, and the blood transfusion tube penetrates the movable groove.

[0014] Further, the filter disc is internally provided with a movable groove, two extrusion blocks are arranged in the movable groove, and the blood transfusion tube penetrates the movable groove.

[0015] Further, the filter disc is internally provided with a movable groove, two extrusion blocks are arranged in the movable groove, and the blood transfusion tube penetrates the movable groove.

[0016] The utility model provides a kind of air filter structure of blood transfusion device dropper, with following beneficial effects:

[0017] The utility model has the advantages that by the setting of filter assembly, small gas bubble in blood can be isolated and discharged, gas is avoided to enter into dropper, blood liquid level is reduced to the part below dropper, even enters into patient's body, the problems caused by manual exhaust and air embolism are avoided, simultaneously, cooperate with the setting of clamping assembly, blood transfusion tube can be closed when replacing blood bag, the entry of gas is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is whole structure schematic view of the utility model.

[0019] Figure 2 It is whole structure sectional view of the utility model.

[0020] Figure 3 It is whole structure half sectional view of the utility model.

[0021] Figure 4 It is filter disc structure schematic view of the utility model.

[0022] Figure 5 The utility model discloses a filter cavity structure schematic view.

[0023] Figures 1-5 Middle: 1, blood bag, 2, blood transfusion tube, 3, filter disc, 301, movable groove, 302, extrusion block, 303, screw hole, 304, threaded rod, 305, knob, 4, catheter, 5, drip tube, 501, side pipe, 502, input pipe, 6, filter cavity, 601, support block, 602, filter screen, 603, filter membrane, 604, exhaust pipe, 605, check valve. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] The present application provides an air filtering structure of a drip tube of a blood transfusion device, which will be described in detail below. It should be noted that the description order of the following embodiments is not limited as the preferred order of the embodiments.

[0026] The present application will be described in detail below with reference to the drawings and specific embodiments.

[0027] Embodiment 1

[0028] Please refer to Figures 1-5 In the present embodiment, an air filtering structure of a drip tube of a blood transfusion device is provided, characterized in that it comprises: a blood bag 1, the bottom of the blood bag 1 being connected with a blood transfusion tube 2, the bottom of the blood transfusion tube 2 being provided with a filter disc 3, the bottom of the filter disc 3 being connected with a catheter 4, and the bottom of the catheter 4 being connected with a drip tube 5; a clamping assembly arranged between the blood transfusion tube 2 and the filter disc 3, the clamping assembly comprising: a movable groove 301, an extrusion block 302, and a threaded rod 304; and a filter assembly arranged inside the filter disc 3, the filter assembly comprising: a support block 601, a filter screen 602, and a filter membrane 603.

[0029] By arranging the filter assembly, the tiny air bubbles in the blood can be isolated and discharged, avoiding the gas from entering the inside of the drip tube 5, causing the blood liquid level to drop below the drip tube 5, or even entering the patient's body, thereby avoiding the problems caused by manual air discharge and air embolism. In combination with the arrangement of the clamping assembly, the blood transfusion tube can be closed when the blood bag 1 is replaced, reducing the entry of gas.

[0030] Embodiment 2

[0031] On the basis of embodiment 1, the movable slot 301 is arranged in the filter disc 3, two extrusion blocks 302 are arranged in the movable slot 301, the blood transfusion tube 2 penetrates the movable slot 301, the threaded holes 303 are arranged on the opposite sides of the filter disc 3, the threaded holes 303 are communicated with the movable slot 301, the threaded rods 304 are threadedly connected in the threaded holes 303, one end of the threaded rod 304 is connected with the extrusion block 302 through a bearing, the other end of the threaded rod 304 protrudes from the outer surface of the filter disc 3, the knob 305 is connected with one end of the threaded rod 304, and the side of the extrusion block 302 close to the blood transfusion tube 2 is convex.

[0032] In the process of blood transfusion to the patient, the blood bag 1 needs to be replaced after the blood in the blood bag 1 is transfused, at this time, in order to avoid that the external gas enters into the blood transfusion tube 2 in the process of replacing the blood bag 1, the gas enters into the drip tube 5 along the blood transfusion tube 2, the liquid level of the drip tube 5 is lowered into the input tube 502, and the drip tube 5 needs to be manually extruded to exhaust, but the structure of the red blood cells is damaged when the drip tube 5 and the input tube 502 are extruded, therefore, when the blood bag 1 is replaced, the threaded rod 304 is driven to rotate by the knob 305, the threaded rod 304 is moved under the action of the threaded rotation of the threaded hole 303, the extrusion block 302 is driven to move to the direction of the blood transfusion tube 2, then the blood transfusion tube 2 is clamped by the movement of the two extrusion blocks 302, so that the blood transfusion tube 2 has the effect of stopping liquid, and the gas is prevented from entering into the drip tube 5 through the blood transfusion tube 2.

[0033] Embodiment 3

[0034] On the basis of embodiment 1, the filter cavity 6 is arranged in the filter disc 3, the bottom end of the blood transfusion tube 2 extends into the filter cavity 6, the support block 601 is arranged in the filter cavity 6, the through hole is arranged in the support block 601, the filter screen 602 is arranged in the through hole, the filter membrane 603 is arranged in the filter cavity 6 and located below the filter screen 602, the filter membrane 603 is made of polyether sulfone material, the filter screen 602 is made of nylon material, the exhaust pipe 604 is arranged in the filter disc 3, the one-way valve 605 is arranged in the exhaust pipe 604, the top end of the catheter 4 is communicated with the filter cavity 6, the side tube 501 is connected with the top of the drip tube 5, and the input tube 502 is connected with the bottom of the drip tube 5.

[0035] Since when the blood is collected from the blood donor and transferred to the blood transfusion bag, a small amount of air can be introduced into the bag along with the blood, or the blood transfusion bag needs to be added with drugs or other liquids such as anticoagulants, this process can also inadvertently bring some air, so that the blood bag 1 inside a small amount of air, and in the process of blood transfusion, form micro-bubbles, at this time the blood bag 1 inside the blood through the blood transfusion tube 2 into the filter chamber 6, and through the filter screen 602, remove the blood may exist in the micro-particles, such as rubber plug fragments, glass chips, etc., these particles into the blood circulation can cause blood vessel obstruction or inflammatory response, then the polyether sulfone has good biocompatibility and is a microporous material, so that the filter membrane 603 can prevent air from passing while allowing liquid to flow freely, so as to filter the micro-bubbles in the blood, avoid the bubbles into the drip tube 5, resulting in the liquid level of the drip tube 5 is reduced, then the isolated bubble rises to the top of the filter chamber 6, and enters the exhaust pipe 604 through the one-way valve 605 to be discharged, the filtered blood is discharged into the drip tube 5 through the catheter 4, and then input into the patient's body through the drip tube 5 and the input pipe 502.

[0036] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0037] The above describes in detail the air filtering structure of the drip tube of the blood transfusion device provided by the embodiments of the present application, and the principles and implementation manners of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the technical solutions and core ideas of the present application; those skilled in the art should understand that the technical solutions recorded in the above embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An air filtration structure for a blood transfusion set drip tube, characterized in that... ,include: Blood bag (1), the bottom of the blood bag (1) is connected to a transfusion tube (2), the bottom of the transfusion tube (2) is provided with a filter plate (3), the bottom of the filter plate (3) is connected to a catheter (4), and the bottom of the catheter (4) is connected to a dropper (5). A clamping assembly is disposed between the infusion tube (2) and the filter disc (3), the clamping assembly comprising: a movable groove (301), a compression block (302), and a threaded rod (304); and A filter assembly is provided inside the filter disc (3), the filter assembly including: a support block (601), a filter screen (602) and a filter membrane (603). The filter disc (3) has a filter chamber (6) inside, and the bottom end of the infusion tube (2) extends into the filter chamber (6). A support block (601) is installed inside the filter chamber (6), and a through hole is provided on the support block (601). A filter screen (602) is provided inside the through hole. The filter chamber (6) is provided with a filter membrane (603) inside, and the filter membrane (603) is located below the filter screen (602). The filter membrane (603) is made of polyethersulfone material, and the filter screen (602) is made of nylon material. The filter disc (3) is provided with an exhaust pipe (604) inside, and the exhaust pipe (604) is provided with a one-way valve (605).

2. The air filtration structure of the blood transfusion set drip tube according to claim 1, characterized in that, The filter disc (3) has a movable groove (301) inside, and two squeezing blocks (302) are provided inside the movable groove (301). The infusion tube (2) passes through the movable groove (301).

3. The air filtration structure of the blood transfusion set dropper according to claim 2, characterized in that, The filter disc (3) has threaded holes (303) on both sides. The threaded holes (303) are connected to the movable groove (301). A threaded rod (304) is threaded inside the threaded hole (303). One end of the threaded rod (304) is connected to the extrusion block (302) through a bearing. The other end of the threaded rod (304) protrudes from the outer surface of the filter disc (3).

4. The air filtration structure of the blood transfusion set drip tube according to claim 3, characterized in that, One end of the threaded rod (304) is connected to a knob (305), and the compression block (302) has a convex surface on the side near the transfusion tube (2).

5. The air filtration structure of the blood transfusion set drip tube according to claim 1, characterized in that, The top end of the conduit (4) is connected to the filter chamber (6), the top of the dropper (5) is connected to a side tube (501), and the bottom of the dropper (5) is connected to an input tube (502).

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