Anticoagulation pump device for blood purification

Abstract

The present invention provides an anticoagulation pump device for blood purification, comprising an anticoagulation pump device body, the anticoagulation pump device body comprising a base plate, a pipeline 1, a pipeline 2 and a motor, a motor is installed on the surface of the base plate at the top of a supporting leg, one end of the motor is connected with a long gear, the long gear is meshed with a large gear, the middle of the large gear is connected to a short rod through a bearing, an eccentric shaft is installed on one side of the large gear, a sleeve is provided in the middle of the eccentric shaft, a piston rod is connected to one side of the sleeve, the rear end of the piston rod is connected to a piston plate through a universal ball structure, a clamping block is provided on one side of the piston plate, the piston plate is inserted into the inside of pipeline 1 or pipeline 2, the anticoagulation pump device for blood purification can continue to be used when the syringe is replaced, the installation is more stable, the injection is smooth and efficient, the space is fully utilized, and the syringe capacity is larger.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to an anticoagulation pump device for blood purification. Background Art

[0002] Hemodialysis is to introduce the patient's blood into the dialyzer, and use the difference in solute concentration on both sides of the semi-permeable membrane to achieve the effect of blood purification through osmosis, diffusion and ultrafiltration, and correct the imbalance of water and electrolytes. In order to prevent the blood from coagulating in the extracorporeal environment, an anticoagulant pump is needed to inject anticoagulants into the blood.

[0003] The existing anticoagulation pump needs to frequently replace the syringe after fixing it, and the conventional pump cannot continue to inject when the syringe is replaced, which will affect the anticoagulation effect. On the other hand, the conventional anticoagulation pump is fixed on the syringe, and it will produce slight shaking during operation and has poor stability. In order to push the internal solvent, space needs to be reserved for the push rod, which results in a large space being occupied. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an anticoagulation pump device for blood purification to solve the problems raised in the above-mentioned background technology. The present invention can continue to be used when the syringe is replaced, the installation is more stable, the injection is smooth and efficient, the space is fully utilized, and the syringe capacity is larger.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: an anticoagulation pump device for blood purification, comprising an anticoagulation pump device body, the anticoagulation pump device body comprising a base plate, a pipeline 1, a pipeline 2 and a motor, a motor is installed on the surface of the base plate at the top of the supporting leg, one end of the motor is connected to a long gear, the long gear is meshed with a large gear, the middle of the large gear is connected to a short rod through a bearing, an eccentric shaft is installed on one side of the large gear, the middle sleeve of the eccentric shaft is provided with a sleeve, one side of the sleeve is connected to a piston rod, the rear end of the piston rod is connected to the movable shaft through a universal ball structure. The piston plate is connected, a block is provided on one side of the piston plate, the piston plate is inserted into the inside of pipe one or pipe two, the surfaces of pipe one and pipe two are provided with cover plates and movable tracks, syringes are installed inside pipe one and pipe two, a baffle is provided at one end of the syringe, a notch is provided on the surface of the baffle, a needle tube is inserted inside the notch, a needle is installed at the rear end of the needle tube, a rubber pad is provided at one end of the syringe, a push plate is installed inside the syringe, a card slot is provided on the rear side of the push plate, and positioning slots are provided at the bottom ends of the inner parts of pipe one and pipe two.

[0006] As a preferred embodiment of the present invention, the short rod, pipe 1 and pipe 2 are all fixedly mounted on the surface of the base plate through supporting legs.

[0007] As a preferred embodiment of the present invention, the number of the large gears is two, and the size specifications are the same. The two large gears are installed parallel to each other and are meshed with the long gear.

[0008] As a preferred embodiment of the present invention, the installation positions of the eccentric shafts on the outer sides of the two large gears have the same length from the center points of the large gears to which they are connected but in opposite directions, and a limiting structure is provided on the top of the eccentric shafts.

[0009] As a preferred embodiment of the present invention, two sets of movable tracks are provided on the surfaces of the pipe 1 and the pipe 2, and the plane where each set of movable tracks is located coincides with the plane where the corresponding large gear is located.

[0010] As a preferred embodiment of the present invention, the side of the push plate is made of rubber material, and the interior of the syringe is sealed by the side of the push plate fitting against the inner wall of the shell.

[0011] As a preferred embodiment of the present invention, the needle passes through the middle of the rubber pad and is connected with the interior of the syringe, and the bottom end of the syringe is clamped in the interior of the positioning groove through a protruding structure.

[0012] As a preferred embodiment of the present invention, the outer diameters of the piston plate and the push plate are the same, and the size of the clamping block is the same as the inner size of the clamping slot.

[0013] As a preferred embodiment of the present invention, the cover plate is connected to the shells of the pipe one and the pipe two as a whole through hinges at the rear end, and the hinges are arranged on both sides of the movable track.

[0014] As a preferred embodiment of the present invention, the length of the syringe is the same as the length of the opening after the cover plate is lifted, and the surface of the syringe fits with the inner wall of the first pipe or the second pipe.

[0015] Beneficial effects of the present invention: An anticoagulation pump device for blood purification of the present invention comprises an anticoagulation pump device body, and the anticoagulation pump device body comprises a base plate, a motor, a long gear, a large gear, a short rod, an eccentric shaft, a sleeve, a piston rod, a pipeline one, a pipeline two, a movable track, a needle, a syringe, a syringe, a push plate, a rubber pad, a baffle, a notch, a piston plate, a block, a universal ball, a support leg, a positioning groove, a slot, a cover plate, and a bearing.

[0016] 1. The anticoagulation pump device for blood purification can still maintain the injection effect when the syringe is replaced. The replacement is simpler and more convenient, and does not affect the injection process.

[0017] 2. The anticoagulation pump device for blood purification shortens the accommodation space required for the syringe, further increases the volume of the syringe, and reduces the cost of the syringe.

[0018] 3. The anticoagulation pump device for blood purification can avoid the shaking of the syringe during the injection process, improve the stability, and does not require frequent needle changes when replacing the syringe. It also has faster positioning and more efficient connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A top view of an anticoagulation pump device for blood purification according to the present invention;

[0020] Figure 2 This is an internal exploded view of a pipeline portion of an anticoagulation pump device for blood purification according to the present invention;

[0021] Figure 3 A side cross-sectional view of a tube groove portion of an anticoagulation pump device for blood purification according to the present invention;

[0022] Figure 4 It is a front view of a large gear of an anticoagulation pump device for blood purification of the present invention;

[0023] Figure 5 A side view of a large gear of an anticoagulation pump device for blood purification according to the present invention;

[0024] In the figure: 1. bottom plate; 2. motor; 3. long gear; 4. large gear; 5. short rod; 6. eccentric shaft; 7. sleeve; 8. piston rod; 9. pipe 1; 10. pipe 2; 11. movable track; 12. needle; 13. needle tube; 14. syringe; 15. push plate; 16. rubber pad; 17. baffle; 18. notch; 19. piston plate; 20. block; 21. universal ball; 22. support leg; 23. positioning groove; 24. slot; 25. cover plate; 26. bearing. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0026] See also Figures 1 to 5The present invention provides a technical solution: an anticoagulation pump device for blood purification, comprising an anticoagulation pump device body, the anticoagulation pump device body comprising a bottom plate 1, a pipeline 1 9, a pipeline 2 10 and a motor 2, the surface of the bottom plate 1 is provided with a motor 2 at the top of a supporting leg 22, one end of the motor 2 is connected with a long gear 3, the long gear 3 is meshed with a large gear 4, the middle of the large gear 4 is connected with a short rod 5 through a bearing 26, an eccentric shaft 6 is installed on one side of the large gear 4, a sleeve 7 is provided in the middle of the eccentric shaft 6, a piston rod 8 is connected to one side of the sleeve 7, the rear end of the piston rod 8 is connected to a piston plate 19 through a universal ball 21 structure, and a card is provided on one side of the piston plate 19 Block 20, the piston plate 19 is inserted into the inside of pipe 1 9 or pipe 2 10, the surfaces of pipe 1 9 and pipe 2 10 are both provided with cover plates 25 and movable tracks 11, syringes 14 are installed inside pipe 1 9 and pipe 2 10, a baffle 17 is provided at one end of the syringe 14, a notch 18 is provided on the surface of the baffle 17, a needle tube 13 is inserted into the inside of the notch 18, a needle 12 is installed at the rear end of the needle tube 13, a rubber pad 16 is provided at one end of the syringe 14, a push plate 15 is installed inside the syringe 14, a card slot 24 is provided on the rear side of the push plate 15, and positioning grooves 23 are provided at the bottom ends of the inner parts of pipes 1 9 and pipe 2 10.

[0027] As a preferred embodiment of the present invention, the short rod 5, pipe 1 9 and pipe 2 10 are all fixedly mounted on the surface of the base plate 1 through supporting legs 22, and the two pipes are installed parallel to each other.

[0028] As a preferred embodiment of the present invention, the large gears 4 are provided in two numbers and have the same size specifications. The two large gears 4 are installed parallel to each other and are meshed with the long gear 3. The long gear 3 is used to drive the two large gears 4 to rotate, and the number of teeth of the long gear 3 is less than that of the large gear 4.

[0029] As a preferred embodiment of the present invention, the installation positions of the eccentric shafts 6 on the outsides of the two large gears 4 have the same length from the center point of the large gears 4 to which they are respectively connected, but are in opposite directions, and a limiting structure is provided on the top of the eccentric shafts 6 to prevent the sleeve 7 from moving outward when rotating and causing it to fall out.

[0030] As a preferred embodiment of the present invention, two sets of movable tracks 11 are provided on the surface of pipe 1 9 and pipe 2 10, and the plane where each set of movable tracks 11 is located coincides with the plane where the corresponding large gear 4 is located. Therefore, when the large gear 4 drives the piston rod 8 to move, it always moves in the movable track 11 to avoid being stuck by the pipe.

[0031] As a preferred embodiment of the present invention, the outer diameters of the piston plate 19 and the push plate 15 are the same, the size of the clamping block 20 is the same as the inner size of the clamping slot 24, and the piston plate 19 and the push plate 15 are connected as a whole by clamping the clamping block 20 inside the clamping slot 24.

[0032] As a preferred embodiment of the present invention, the length of the syringe 14 is the same as the opening length after the cover plate 25 is lifted, the surface of the syringe 14 fits against the inner wall of pipe 1 9 or pipe 2 10, and when the piston plate 19 is pushed to one end of the syringe 14, it will be pushed into the interior of the syringe 14 and contact the push plate 15.

[0033] Working principle: The anticoagulation pump device for blood purification is composed of a bottom plate 1, a pipeline 1 9, a pipeline 2 10 and a motor 2. The motor 2 drives the long gear 3 to rotate, and then drives the two large gears 4 to rotate. The outer sides of the two large gears 4 are connected to the piston rod 8 through the eccentric shaft 6, and the two eccentric shafts 6 are installed in opposite directions of the surface of the large gear 4. Therefore, after the motor 2 rotates, the two piston rods 8 respectively drive the piston plate 19 at the rear end to move forward and backward, and the piston rod 8 moves in the movable track 11. The piston plate 19 contacts the push plate 15 at the rear end of the syringe 14 placed in the pipeline. The push plate 15 is pushed forward to push the anticoagulant inside out of the needle tube 13. Due to the double-pipeline design, the two piston rods 8 move forward alternately. Therefore, when the syringe 14 in the pipe 1 9 is injected, the piston plate 19 in the pipe 2 10 is located at the rear end. At this time, the cover plate 25 is opened to replace the syringe 14 in the pipe 2 10, so that the injection can continue when the syringe 14 is replaced. The replacement is simpler and more convenient, and does not affect the injection process. The anticoagulant pump device replaces the push rod with the piston rod 8 and relies on the piston plate with the same diameter. 19 hits the push plate 15 to push and inject the anticoagulant, so the syringe 14 does not need to use an additional push rod structure, thereby shortening the storage space required for the syringe 14, further increasing the volume of the syringe 14, and reducing the cost of the syringe 14. A protrusion is provided at the bottom end of the syringe 14, and the protrusion structure at the bottom of the syringe 14 is used to clamp the inside of the positioning groove 23, so that the angle of the syringe 14 after placement can be limited, and a card slot 24 is provided on the rear side of the push plate 15, and a card block 20 with the same size as the card slot 24 is provided at the front end of the piston plate 19. When the piston plate 19 moves to contact with the push plate 15, the card block 20 can be inserted into the inside of the card slot 24 to fix the syringe 14 to prevent the syringe 14 from shaking during the injection process, thereby improving stability. The front end of the syringe 14 is against the rear side of the baffle 17, and a notch 18 is provided on the surface of the baffle 17. The needle 12 at the rear end of the needle tube 13 can be inserted into the middle of the rubber pad 16 through the notch 18 and connected to the inside of the syringe 14. Therefore, when replacing the syringe 14, there is no need to frequently replace the needle 12, and the positioning is faster and the connection is more efficient.

[0034] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An anticoagulation pump device for blood purification, comprising an anticoagulation pump device body, characterized in that: The anticoagulant pump device body comprises a base plate (1), a pipeline 1 (9), a pipeline 2 (10) and a motor (2). The surface of the base plate (1) is provided with a motor (2) at the top of a supporting leg (22). One end of the motor (2) is connected with a long gear (3). The long gear (3) is meshed with a large gear (4). The middle of the large gear (4) is connected to a short rod (5) via a bearing (26). An eccentric shaft (6) is installed on one side of the large gear (4). A sleeve (7) is sleeved in the middle of the eccentric shaft (6). A piston rod (8) is connected to one side of the sleeve (7). The rear end of the piston rod (8) is connected to a piston plate (19) via a universal ball (21) structure. A clamping block (20) is provided on one side of the piston plate (19). The piston plate (19) is inserted into the pipeline 1 (21). 9) or the inside of the second pipe (10), the surfaces of the first pipe (9) and the second pipe (10) are both provided with a cover plate (25) and a movable track (11), a syringe (14) is installed inside the first pipe (9) and the second pipe (10), a baffle (17) is provided at one end of the syringe (14), a notch (18) is provided on the surface of the baffle (17), a needle tube (13) is inserted into the inside of the notch (18), a needle head (12) is installed at the rear end of the needle tube (13), a rubber pad (16) is provided at one end of the syringe (14), a push plate (15) is installed inside the syringe (14), a card slot (24) is provided on the rear side of the push plate (15), and a positioning slot (23) is provided at the bottom end of the inside of the first pipe (9) and the second pipe (10).

2. An anticoagulation pump device for blood purification according to claim 1, characterized in that: The short rod (5), pipe one (9) and pipe two (10) are all fixedly mounted on the surface of the base plate (1) via supporting legs (22).

3. The anticoagulation pump device for blood purification according to claim 1, characterized in that: The large gears (4) are provided in two numbers and have the same size and specifications. The two large gears (4) are installed parallel to each other and are meshed with the long gear (3).

4. The anticoagulation pump device for blood purification according to claim 1, characterized in that: The installation positions of the eccentric shafts (6) outside the two large gears (4) have the same length from the center point of the large gears (4) to which they are respectively connected, but in opposite directions, and a limiting structure is provided on the top of the eccentric shafts (6).

5. The anticoagulation pump device for blood purification according to claim 1, characterized in that: The surfaces of the first pipe (9) and the second pipe (10) are both provided with two sets of movable tracks (11), and the plane where each set of movable tracks (11) is located coincides with the plane where the corresponding large gear (4) is located.

6. The anticoagulation pump device for blood purification according to claim 1, characterized in that: The side of the push plate (15) is made of rubber material, and the interior of the syringe (14) is sealed by the side of the push plate (15) being in contact with the inner wall of the shell.

7. The anticoagulation pump device for blood purification according to claim 1, characterized in that: The needle (12) passes through the middle of the rubber pad (16) and is connected to the inside of the syringe (14). The bottom end of the syringe (14) is clamped in the inside of the positioning groove (23) through a protruding structure.

8. The anticoagulation pump device for blood purification according to claim 1, characterized in that: The outer diameters of the piston plate (19) and the push plate (15) are the same, and the size of the clamping block (20) is the same as the inner size of the clamping groove (24).

9. The anticoagulation pump device for blood purification according to claim 1, characterized in that: The cover plate (25) is connected to the casing of the first pipe (9) and the second pipe (10) as a whole through hinges at the rear end, and the hinges are arranged on both sides of the movable track (11).

10. The anticoagulation pump device for blood purification according to claim 1, characterized in that: The length of the syringe (14) is the same as the length of the opening after the cover plate (25) is lifted, and the surface of the syringe (14) fits with the inner wall of the first pipe (9) or the second pipe (10).

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