Disposable flow setting fine adjustment type blood transfusion apparatus

Abstract

The utility model discloses a disposable flow setting fine tuning type blood transfusion apparatus, which comprises a chamber, a fine tuning assembly and a stabilizing assembly, the lower part of the chamber is communicated and connected with a conical barrel, and the lower part of the conical barrel is communicated and connected with a blood transfusion tube. By means of the fine adjustment assembly, when blood transfusion flow needs to be adjusted, the pressing block is pressed to enable the piston rod to drive the conical piston to move downwards, and the conical piston can continuously go deep into the conical barrel matched with the conical piston. As the conical piston gradually goes deep into the conical barrel, the space for blood circulation in the conical barrel can be gradually reduced, so that the blood passing through the space can be limited, the blood transfusion flow can be accurately adjusted finally, and the traditional mode that a pressing wheel extrudes a pipeline to adjust the flow is replaced; the possibility that a pipeline is abraded due to extrusion of the pressing wheel is fundamentally eradicated, the reliability and stability of the blood transfusion apparatus in the aspect of flow regulation are greatly improved, and a safer and more efficient guarantee is provided for the medical blood transfusion process.

Description

TECHNICAL FIELD

[0001] The utility model relates to blood transfusion device technical field especially one -off flow setting fine adjustment type blood transfusion device. BACKGROUND

[0002] Blood transfusion is a common and key treatment method in modern medical treatment, plays an extremely important role in saving patient's life, improves patient's health condition, along with the progress of medical technology and the unceasing enhancement of the requirement of blood transfusion safety and precision, the design of blood transfusion device gradually trends to refinement and intelligentization.

[0003] The existing blood transfusion device adopts the direct puncture needle to stab into the blood bag in the connecting mode with the blood bag, and the slight vibration of the external factors such as the unconscious movement of the patient, the adjustment of the sickbed or the movement of the surrounding personnel can all extremely possibly lead to the shaking of the blood bag. Once the blood bag shakes, since the puncture needle is simply stabbed into the blood bag, lacks the sufficient stable connecting structure and fixing mechanism, the position in the blood bag is difficult to keep stable. The unstable state continues to accumulate, can make the puncture needle extremely easy to fall off from the blood bag, in addition, the flow regulator for adjusting the flow of the current blood transfusion device also has the deficiency, and the adjusting mode is only to rely on a pressure roller to extrude the pipeline, however, in the actual blood transfusion application scene, due to the individual difference of the patient, the change of the illness and the special requirement of different treatment stages and other factors, the blood transfusion flow often needs to be adjusted frequently by medical staff, and the pressure roller can continuously generate the high-intensity friction with the surface of the pipeline. With the increasing friction times, the outer wall material of the pipeline can gradually appear the wear phenomenon, and the serious consequences such as pipeline rupture and blood leakage can be extremely possibly caused.

[0004] Accordingly, the one-off flow setting fine adjustment type blood transfusion device is provided. UTILITY MODEL CONTENTS

[0005] The utility model discloses a one-off flow setting fine adjustment type blood transfusion device which solves the problems in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] The one-off flow setting fine adjustment type blood transfusion device comprises a chamber, a fine adjustment assembly and a stable assembly.

[0008] The chamber is connected with a conical cylinder below, the conical cylinder is connected with a blood transfusion pipe below, the chamber is connected with a blood delivery pipe above, and the blood delivery pipe is provided with a circular ring at one end.

[0009] The fine adjustment assembly is used for adjusting the blood transfusion flow, and the fine adjustment assembly is composed of a piston rod and a conical piston. The piston rod is arranged in the chamber, and the conical piston is fixedly connected to one end of the piston rod.

[0010] The stable assembly makes the device connecting the blood bag more stable, and the stable assembly is composed of a conical body and a rubber ring, the conical body is fixedly connected on the circular ring, and the rubber ring is fixedly connected on the outer side of the conical body.

[0011] Preferably, a sleeve is fixedly connected on the chamber, and a winding rod is fixedly connected on the outer side of the chamber.

[0012] Preferably, a needle is connected on one end of the transfusion tube away from the conical cylinder.

[0013] Preferably, a pressing block is fixedly connected above the piston rod, and the piston rod is slidingly connected on the inner wall of the sleeve.

[0014] Preferably, the volume of the conical piston is equal to the volume of the conical cylinder, and a puncture needle is connected on the upper side of the conical body.

[0015] Preferably, a screw thread and an elbow are arranged on the winding rod.

[0016] The utility model has the following beneficial effects:

[0017] 1. When it is necessary to adjust the transfusion flow, the fine adjustment assembly is used, the piston rod is driven downward by the pressing block, the conical piston continuously goes deep into the conical cylinder, the space in the conical cylinder for blood circulation gradually reduces, the blood passing through the conical cylinder is limited, the transfusion flow is accurately adjusted, the traditional pressure wheel extrusion pipe regulation mode is replaced, the possibility of pipe wear caused by the pressure wheel extrusion is fundamentally eliminated, the reliability and stability of the transfusion device in the flow regulation aspect are greatly improved, and the medical transfusion process is more safe and efficient.

[0018] 2. When the puncture needle penetrates into the blood bag, the blood bag connecting part expands under the action of the conical body, the puncture needle continuously goes deep, the blood bag connecting part passes through the rubber ring, the rubber ring has elasticity and friction, the rubber ring extrudes and rubs the blood bag connecting edge when the blood bag connecting edge contacts the rubber ring, the blood bag connecting edge is finally clamped between the rubber ring and the circular ring under the action of the rubber ring, the blood bag connecting edge is fixed, the stability and reliability of the connection between the puncture needle and the blood bag are ensured, the puncture needle and the blood bag are prevented from loosening or falling off, and the safety and smoothness of the transfusion process are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 The utility model provides a whole structure schematic view of disposable flow setting fine adjustment type blood transfusion device;

[0020] Fig. 2 The utility model provides a chamber internal section view of disposable flow setting fine adjustment type blood transfusion device;

[0021] Fig. 3 The utility model provides a connection structure schematic view of disposable flow setting fine adjustment type blood transfusion device puncture needle, annular ring and stable assembly.

[0022] In the drawing: 1 needle head, 2 blood transfusion tube, 3 chamber, 4 winding rod, 5 conical cylinder, 6 pressing block, 7 sleeve, 8 blood delivery tube, 9 puncture needle, 10 piston rod, 11 conical piston, 12 conical body, 13 rubber ring, 14 annular ring. Specific implementation

[0023] The technical scheme in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0024] Reference Figs. 1-3 The disposable flow setting fine adjustment type blood transfusion device includes chamber 3, fine adjustment assembly and stable assembly.

[0025] The sleeve 7 is fixedly connected on the chamber 3, so that the piston rod 10 can slide on the sleeve 7, the winding rod 4 is fixedly connected on the outside of the chamber 3, the winding rod 4 is provided with threads and elbow, the existence of the threads can conveniently wind and fix some accessory pipelines or cables, so as to avoid the disordered situation in the blood transfusion process, the elbow can prevent the pipeline from falling off from the winding rod 4, the conical cylinder 5 is connected on the lower side of the chamber 3, the blood transfusion tube 2 is connected on the lower side of the conical cylinder 5, the blood delivery tube 8 is connected on the upper side of the chamber 3, the needle head 1 is connected on the end of the blood transfusion tube 2 far from the conical cylinder 5, so that the blood after the flow adjustment of the conical cylinder 5 can be stably transmitted along the blood transfusion tube 2, and finally input into the patient's body through the needle head 1 connected on the end of the blood transfusion tube 2 far from the conical cylinder 5, the annular ring 14 is arranged on one end of the blood delivery tube 8.

[0026] The fine adjustment assembly is used for adjusting the blood transfusion flow, and is composed of a piston rod 10 and a conical piston 11. The piston rod 10 is arranged in the chamber 3 and can slide in the up-down direction in the chamber 3. The conical piston 11 is fixedly connected to one end of the piston rod 10. A pressing block 6 is fixedly connected to the piston rod 10. The piston rod 10 is slidingly connected to the inner wall of the sleeve 7. The piston rod 10 can be controlled to slide up and down on the inner wall of the sleeve 7 through the pressing block 6, so that the piston rod 10 drives the conical piston 11 to move up and down. The volume of the conical piston 11 is equal to the volume of the conical cylinder 5. Therefore, the flow-through space of the blood in the conical cylinder 5 can be accurately changed through the position of the conical piston 11 in the conical cylinder 5, so that the blood transfusion flow can be accurately adjusted, and the flow requirement of different patients in different blood transfusion stages can be met.

[0027] The stable assembly makes the device more stable in connecting the blood bag. The stable assembly is composed of a conical body 12 and a rubber ring 13. The conical body 12 is fixedly connected to a circular ring 14. The rubber ring 13 is fixedly connected to the outer side of the conical body 12. When the blood bag connecting edge passes through the rubber ring 13 under the expansion of the conical body 12, the rubber ring 13 generates moderate extrusion and friction resistance on the blood bag connecting edge by virtue of its own elasticity and friction force. Finally, the blood bag connecting edge can be stably clamped between the rubber ring 13 and the circular ring 14. The conical body 12 is connected to the puncture needle 9. When the puncture needle 9 penetrates into the blood bag and continuously penetrates, the conical body 12 enters the blood bag connecting area along with the penetration of the puncture needle 9. Due to its structure from thin to thick, the conical body 12 generates an outward expansion force on the blood bag connecting part, so that the blood bag connecting part is gradually expanded under the action of the conical body 12.

[0028] When the device is used, first, the puncture needle 9 at one end of the blood delivery tube 8 is aimed at the appropriate position of the blood bag, and then the circular ring 14 is slowly pushed to make the puncture needle 9 penetrate into the blood bag. As the puncture needle 9 penetrates, the conical body 12 connected above the puncture needle 9 starts to act on the blood bag connecting part, so that the blood bag connecting part is gradually expanded under the expansion force of the conical body 12. When the blood bag connecting edge passes through the rubber ring 13, the rubber ring 13 generates extrusion and friction resistance on the blood bag connecting edge by virtue of its own elasticity and friction force. Finally, the blood bag connecting edge is stably clamped between the rubber ring 13 and the circular ring 14, so that a stable and reliable connection is established, and the separation of the puncture needle from the blood bag due to the shaking of the blood bag and other external factors is effectively prevented.

[0029] Then, according to the specific blood transfusion needs of the patient to adjust the blood flow. When operating, the medical staff press the block 6 above the piston rod 10, the block 6 is forced to drive the piston rod 10 to slide downward in the sleeve 7 wall, since the tapered piston 11 is fixedly connected to the piston rod 10 one end, the tapered piston 11 will move downward in the tapered cylinder 5. Because the volume of the tapered piston 11 and the volume of the tapered cylinder 5 is equal, by controlling the position of the tapered piston 11 in the tapered cylinder 5, the flow-through space of the blood in the tapered cylinder 5 can be accurately changed, the precise regulation of the blood flow from subtle to larger range is realized, the blood transfusion requirements of patients with different conditions are met, and compared with the traditional pressure wheel extrusion pipeline to adjust the flow, the device avoids the wear of the pipeline, improves the accuracy and stability of the flow regulation, and reduces the medical risks caused by the flow fluctuation. During the blood transfusion, the winding rod 4 outside the chamber 3 can be used to arrange and fix the related auxiliary pipeline or cable, the thread is convenient to wind and fix, the elbow can prevent the pipeline from falling off from the winding rod 4, avoids the interference or safety accidents caused by the pipeline or cable winding confusion to the blood transfusion operation, and the needle 1 connected to one end of the blood transfusion tube 2 can accurately pierce into the patient's blood vessel to start the blood transfusion.

[0030] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art according to the technical scheme and the utility model concept of the present application within the technical range disclosed by the present application can be equivalent to replace or change, which should be covered in the protection scope of the present application.

Claims

1. A disposable flow setting fine adjustment type blood transfusion device, characterized by, Including chamber (3), fine adjustment assembly and stable assembly; The conical cylinder (5) is connected below the chamber (3), the blood delivery pipe (2) is connected below the conical cylinder (5), the blood delivery pipe (8) is connected above the chamber (3), and a circular ring (14) is arranged at one end of the blood delivery pipe (8); The fine adjustment assembly is used for adjusting the blood delivery flow, and the fine adjustment assembly is composed of a piston rod (10) and a conical piston (11), the piston rod (10) is arranged in the chamber (3), and the conical piston (11) is fixedly connected to one end of the piston rod (10); The stable assembly makes the device more stable in connection with the blood bag, and the stable assembly is composed of a conical body (12) and a rubber ring (13), the conical body (12) is fixedly connected to the circular ring (14), and the rubber ring (13) is fixedly connected to the outer side of the conical body (12).

2. The disposable flow setting fine adjustment type transfusion device according to claim 1, wherein The sleeve (7) is fixedly connected to the chamber (3), and the winding rod (4) is fixedly connected to the outer side of the chamber (3).

3. The disposable flow setting fine adjustment type transfusion device according to claim 1, wherein The needle (1) is connected to the end of the blood delivery pipe (2) away from the conical cylinder (5), and the conical body (12) is connected to the blood delivery pipe (8).

4. The disposable flow setting fine adjustment type transfusion device according to claim 1, wherein The pressing block (6) is fixedly connected to the top of the piston rod (10), and the piston rod (10) is slidingly connected to the inner wall of the sleeve (7).

5. The disposable flow setting fine adjustment type transfusion device according to claim 1, wherein The volume of the conical piston (11) is equal to the volume of the conical cylinder (5), and the puncture needle (9) is connected above the conical body (12).

6. The disposable flow setting fine adjustment type transfusion device according to claim 2, wherein The winding rod (4) is provided with threads and an elbow.

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