Blood return prevention type disposable infusion apparatus
By designing assembly frames and anti-hemog recovery mechanisms in disposable infusion devices, using components such as front and reverse screws, screw slide sleeves, light projectors and light receivers to achieve anti-slip clamping of the infusion tube and monitoring of the liquid status, the existing solutions are solved The problem of the problem of the anti-hemog recovery structure of the infusion device increases the cost, improving the safety and efficiency of the infusion process.
Patent Information
- Application Number
- CN202420454714.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-08
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-03-08
AI Technical Summary
The anti-return structure of the existing anti-return disposable infusion device is added to the infusion device itself, which makes it different from most infusion devices on the market, increasing production and procurement costs, and cannot change its ‘disposable’ setting.
A disposable infusion device with anti-return type is designed, using an assembly frame and anti-return mechanism, including a forward and reverse screw, a screw slide sleeve, an inner connecting ring frame, a light projector and a light receiver. Through the cooperation of these components, the infusion is achieved. The anti-slip clamping of the tube and the monitoring of the liquid delivery status will then drive the electric push rod to press the infusion tube to prevent blood recovery.
Effectively prevent blood recovery during infusion, adapt to infusion tubes of different thicknesses, and accurately determine whether the liquid has been transported through the cooperation of the light projector and the light receiver, which improves the safety and efficiency of the infusion process, and protects the needle to avoid damage and Infect.
Smart Images
Figure CN222444981U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of infusion sets, in particular to a disposable infusion set with an anti-blood-backflow function. Background Art
[0002] A disposable infusion set is a common medical consumable. It is sterile-processed to establish a channel between the vein and the drug solution and is used for intravenous infusion.
[0003] For example, patent CN218106493U discloses a disposable infusion set with an anti-blood-backflow function. Its technical solution includes a drip pot, a pressure ring and a sleeve frame, a first hose is fixed to the upper end of the drip pot, and the end of the first hose away from the drip pot is fixed to the connecting seat, a medicine needle is fixed to the end of the connecting seat away from the first hose, an exhaust pipe is provided on one side of the drip pot, a second hose is provided at the end of the drip pot away from the first hose, and the end of the second hose away from the drip pot is connected to the catheter through the needle seat, and a needle handle is provided at the end of the catheter away from the needle seat, a base is fixed to the bottom end of the drip pot, and a suspension cavity is opened on both sides of the base, a floating ball is provided in the upper end recess of the base, and two sleeve frames are provided, and the two sleeve frames are respectively clamped on both sides of the connecting seat.
[0004] When the above-mentioned disposable infusion set is in use, its anti-blood backflow structure is added to the infusion set itself. This method makes this type of infusion set different from most infusion sets on the market (structure and price), and no matter what structure is added, it cannot change its own "disposable" setting, thereby increasing normal production and procurement costs. For this reason, we propose an anti-blood backflow disposable infusion set. Utility Model Content
[0005] The purpose of the utility model is to provide a disposable infusion set with anti-blood-backflow, so as to solve the problem that the anti-blood-backflow structure proposed in the above-mentioned background technology is added to the infusion set itself, which makes this type of infusion set different from most infusion sets on the market (structure and price), and no matter what kind of structure is added, it cannot change its own "disposable" setting, thereby increasing the normal production and procurement costs.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a disposable infusion set with anti-blood-backflow, comprising an infusion tube, a first needle connected to the top of the infusion tube, and a second needle connected to the end of the infusion tube, a protection mechanism is installed on one side of the front and rear ends of the infusion tube, and an assembly frame is sleeved around one side of the infusion tube, an anti-blood-backflow mechanism is installed inside the assembly frame, the anti-blood-backflow mechanism comprises an adapter and removal assembly, and the adapter and removal assembly is installed at the upper part of the interior of the assembly frame, and an anti-blood-backflow assembly is installed at the lower part of the interior of the assembly frame.
[0007] Preferably, the adapter and removal assembly includes positive and negative screw rods, and the positive and negative screw rods are installed on one side of the interior of the assembly frame, screw rod sleeves are screwed on both sides of the middle part of the positive and negative screw rods, and inner connecting ring frames are fixed on the inner sides of the two screw rod sleeves, inner ring pads are fixed on the inner sides of the two inner connecting ring frames, and anti-slip grooves are distributed on the inner sides of the two inner ring pads, a projector is installed inside one of the inner ring pads, and a light receiver is installed inside the other inner ring pad, a connecting slide is connected to the outer sides of the two screw rod sleeves, and a guide rod for guiding the two connecting slides is fixed on one side of the interior of the assembly frame.
[0008] Preferably, the inner ring pads are symmetrically distributed along the transverse center axis of the assembly frame, and the light projectors and light receivers inside the two inner ring pads are arranged opposite to each other.
[0009] Preferably, the anti-blood backflow component includes an electric push rod, and the electric push rod is installed on one side of the interior of the assembly frame, the end of the electric push rod is connected to a top pressure head, a fixed block is fixed on the other side of the interior of the assembly frame, and a pressure groove is opened in the middle of the top of the fixed block.
[0010] Preferably, a hollow groove is provided in the middle of one side of the assembly frame.
[0011] Preferably, the protection mechanism includes a first earring plate, and the first earring plate is fixed to one side of the front and rear ends of the infusion tube, the middle parts of the two first earring plates are sleeved with elastic ropes, and the ends of the elastic ropes are connected to the second earring plate, and the inner side of the second earring plate is fixed with a needle cannula.
[0012] Preferably, the interior of the needle cannula matches the size of the first needle and the second needle.
[0013] Compared with the prior art, the beneficial effect of the utility model is as follows: for the anti-blood-backflow disposable infusion set, after the staff takes out the infusion tube, they use the empty groove on one side of the assembly frame to wrap it around the periphery of the infusion tube near the front end, and then the staff manually twists the torsion block at one end of the positive and negative screw rods to rotate it. At this time, the two screw rod sliding sleeves acting with the screw rods will carry the inner connecting ring frames on their inner sides to cooperate with the connecting slide frame and the guide rod to move in relative directions. In this state, the inner ring pads on the inner sides of the two relatively inner connecting ring frames and the anti-skid patterns on the inner sides can play a good anti-skid clamping and limiting role on both sides of the infusion tube in this area. It is worth mentioning that the adjustment The structure can adapt to infusion tubes of different thicknesses. Later, during the infusion process of the infusion tube, the light projector and the light receiver on the inner side of the two inner ring pads will be started in advance. The light irradiated by the light projector when the liquid is flowing and not flowing will be different when the light receiver receives it. The light receiver will determine whether the liquid has been delivered based on the change in light. When the monitored light changes and there is obviously no liquid circulation, the light receiver will transmit the received signal to the controller, and the controller will drive the electric push rod to lift the top pressure head. In this state, the top pressure head will press this part of the infusion tube until it enters the pressure groove for compression, thereby eliminating the air circulation in this part and achieving the purpose of preventing blood backflow.
[0014] The needle sleeves arranged at both ends of the infusion tube can provide good protection for the first needle and the second needle respectively. The needle sleeves can be used to protect the needles not only before hanging the water, but also after the patient has finished hanging the water, to avoid injury and infection when the nurses take them. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0016] Figure 2 For this utility model Figure 1 Schematic diagram of the structure at A in the middle;
[0017] Figure 3 This is a schematic diagram of the top view of the assembly rack of the utility model;
[0018] Figure 4 It is a side structural schematic diagram of the assembly rack of the utility model.
[0019] In the figure: 1. infusion tube; 2. first needle; 3. second needle; 4. protection mechanism; 41. first earring plate; 42. elastic rope; 43. second earring plate; 44. needle sleeve; 5. assembly frame; 6. anti-blood-back mechanism; 61. adapter and removal assembly; 611. positive and negative screw rods; 612. screw rod sliding sleeve; 613. inner connecting ring frame; 614. inner ring pad; 615. anti-slip pattern; 616. projector; 617. light receiver; 618. connecting slide; 619. guide rod; 62. anti-blood-back assembly; 621. electric push rod; 622. top pressure head; 623. fixing block; 624. pressure groove. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] See also Figure 1-4 The utility model provides a technical solution: a blood-backflow-proof disposable infusion set, comprising an infusion tube 1, a first needle 2 is connected to the top of the infusion tube 1, and a second needle 3 is connected to the end of the infusion tube 1, a protection mechanism 4 is installed on the front and rear ends of the infusion tube 1, and an assembly frame 5 is sleeved around one side of the infusion tube 1, a hollow groove is opened in the middle of one side of the assembly frame 5, and a blood-backflow-proof mechanism 6 is installed inside the assembly frame 5, the protection mechanism 4 comprises a first earring plate 41, and the first earring plate 41 is fixed to the front and rear ends of the infusion tube 1. An elastic rope 42 is sleeved on the middle part of the two first earring plates 41, and the end of the elastic rope 42 is connected to the second earring plate 43. A needle cannula 44 is fixed to the inner side of the second earring plate 43. The interior of the needle cannula 44 matches the size of the first needle 2 and the second needle 3. The needle cannula 44 arranged at the two ends of the infusion tube 1 can respectively provide better protection for the first needle 2 and the second needle 3. The needle cannula 44 can be used to protect the needle not only before hanging the water, but also after the patient has finished hanging the water, so as to avoid injury and infection when the nurse takes it.
[0022] Among them, the anti-blood backflow mechanism 6 includes an adaptor and disassembly component 61, and the adaptor and disassembly component 61 is installed on the upper part of the interior of the assembly frame 5, the adaptor and disassembly component 61 includes a positive and negative screw rod 611, and the positive and negative screw rod 611 is installed on one side of the interior of the assembly frame 5, and the positive and negative screw rods 611 are screwed on both sides of the middle of the positive and negative screw rods 611. The inner sides of the two screw rod sleeves 612 are fixed with inner connecting ring frames 613, and the inner sides of the two inner connecting ring frames 613 are fixed with inner ring pads 614, and the inner sides of the two inner ring pads 614 are distributed with anti-slip grooves 615, one of the inner ring pads 614 is installed with a projector 616, and the other inner ring pad 614 is installed with a light receiver. 617, the outer sides of the two screw rod sleeves 612 are connected with a connecting slide 618, and a guide rod 619 for guiding the two connecting slides 618 is fixed on one side of the interior of the assembly frame 5, the inner ring pads 614 are symmetrically distributed along the transverse central axis of the assembly frame 5, and the projectors 616 and the light receivers 617 inside the two inner ring pads 614 are arranged relative to each other, and an anti-blood-back component 62 is installed at the lower part of the interior of the assembly frame 5, and the anti-blood-back component 62 includes an electric push rod 621, and the electric push rod 621 is installed on one side of the interior of the assembly frame 5, and the end of the electric push rod 621 is connected to a top pressure head 622, and a fixed block 623 is fixed on the other side of the interior of the assembly frame 5, and the fixed block 62 A pressing groove 624 is provided in the middle of the top of 3. After the staff takes out the infusion tube 1, they use the empty groove on one side of the assembly frame 5 to wrap it around the periphery of the infusion tube 1 near the front end. Then the staff manually twists the torsion block at one end of the positive and negative screw rods 611 to rotate it. At this time, the two screw rod sliding sleeves 612 acting with the screw rods will carry the inner connecting ring frames 613 on their inner sides to cooperate with the connecting slide 618 and the guide rod 619 to move in relative directions. In this state, the inner ring pads 614 on the inner sides of the two relatively inner connecting ring frames 613 and the inner anti-slip grooves 615 can play a good anti-slip clamping and limiting role on both sides of the infusion tube 1 in this area. It is worth mentioning that this adjustment structure can adapt to infusions of different thicknesses. Tube 1. Later, during the infusion process of the infusion tube 1, the light projector 616 and the light receiver 617 on the inner sides of the two inner ring pads 614 will be started in advance. The light irradiated by the light projector 616 when the liquid is flowing and when it is not flowing will be different when the light receiver 617 receives it. The light receiver 617 will determine whether the liquid has been delivered according to the change in light. When the monitored light change shows that there is obviously no liquid circulation, the light receiver 617 will transmit the receiving signal to the controller, and the controller will drive the electric push rod 621 to lift the top pressure head 622. In this state, the top pressure head 622 will press this part of the infusion tube 1 until it enters the pressure groove 624 for compression, thereby preventing air circulation in this part and achieving the purpose of preventing blood return.
[0023] Working principle: For this type of anti-blood-back disposable infusion set, the staff first takes out the infusion tube 1, and uses the empty groove on one side of the assembly frame 5 to wrap it around the periphery of the infusion tube 1 near the front end. Then the staff manually twists the torsion block at one end of the positive and negative screw rods 611 to rotate it. At this time, the two screw rod sleeves 612 that act on the screw rod will carry the inner connecting ring frames 613 on their inner sides to cooperate with the connecting slide 618 and the guide rod 619 to move in relative directions. In this state, the inner ring pads 614 on the inner sides of the two relatively inner connecting ring frames 613 and the inner anti-slip grooves 615 can play a good anti-slip clamping and limiting role on both sides of the infusion tube 1 in this area. It is worth mentioning that the adjustment structure can adapt to infusion tubes 1 of different thicknesses. Later, during the infusion process of the infusion tube 1, the projectors 616 and the light receivers 617 on the inner sides of the two inner ring pads 614 It will be started in advance. The light irradiated by the light projector 616 when the liquid is flowing and not flowing is different when received by the light receiver 617. The light receiver 617 will determine whether the liquid has been delivered based on the change in light. When the monitored light change shows that there is obviously no liquid circulation, the light receiver 617 will transmit the received signal to the controller, and the controller will drive the electric push rod 621 to lift the top pressure head 622. In this state, the top pressure head 622 will press this part of the infusion tube 1 until it enters the pressure groove 624 for compression, thereby preventing air circulation in this part and achieving the purpose of preventing blood return. Finally, the needle cannula 44 arranged at the two ends of the infusion tube 1 can respectively provide better protection for the first needle 2 and the second needle 3. Not only before hanging the water, but also after the patient has finished hanging the water, the needle cannula 44 can be used to protect the needle to avoid injury and infection when the nurse takes it.
[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A disposable infusion set with anti-blood-backflow function, comprising an infusion tube (1), characterized in that: The top end of the infusion tube (1) is connected to a first needle (2), and the end of the infusion tube (1) is connected to a second needle (3); a protection mechanism (4) is installed on one side of the front and rear ends of the infusion tube (1); an assembly frame (5) is sleeved around one side of the infusion tube (1); an anti-blood-back mechanism (6) is installed inside the assembly frame (5); the anti-blood-back mechanism (6) includes an adaptor and disassembly component (61), and the adaptor and disassembly component (61) is installed at the upper part of the inside of the assembly frame (5); and an anti-blood-back component (62) is installed at the lower part of the inside of the assembly frame (5).
2. The anti-blood-backflow disposable infusion set according to claim 1, characterized in that: The adapting and removing assembly (61) comprises a positive and negative screw rod (611), and the positive and negative screw rod (611) is installed on one side of the inner part of the assembly frame (5), screw rod sliding sleeves (612) are screwed on both sides of the middle part of the positive and negative screw rod (611), and the inner sides of the two screw rod sliding sleeves (612) are fixed with inner connecting ring frames (613), the inner sides of the two inner connecting ring frames (613) are fixed with inner ring pads (614), and the inner sides of the two inner ring pads (614) are distributed with anti-slip grooves (615), one of the inner ring pads (614) is installed with a light projector (616), and the other inner ring pad (614) is installed with a light receiver (617), the outer sides of the two screw rod sliding sleeves (612) are connected with a connecting slide (618), and the inner side of the assembly frame (5) is fixed with a guide rod (619) for guiding the two connecting slides (618).
3. The anti-blood-backflow disposable infusion set according to claim 2, characterized in that: The inner ring pads (614) are symmetrically distributed along the transverse central axis of the assembly frame (5), and the light projectors (616) and light receivers (617) inside the two inner ring pads (614) are arranged in a relative manner.
4. The anti-blood-backflow disposable infusion set according to claim 1, characterized in that: The anti-blood-back component (62) comprises an electric push rod (621), and the electric push rod (621) is installed on one side of the interior of the assembly frame (5), the end of the electric push rod (621) is connected to a top pressure head (622), and a fixed block (623) is fixed on the other side of the interior of the assembly frame (5), and a pressure groove (624) is opened in the middle of the top end of the fixed block (623).
5. The anti-blood-backflow disposable infusion set according to claim 1, characterized in that: A hollow groove is formed in the middle of one side of the assembly frame (5).
6. The anti-blood-backflow disposable infusion set according to claim 1, characterized in that: The protection mechanism (4) comprises a first earring plate (41), and the first earring plate (41) is fixed to one side of the front and rear ends of the infusion tube (1), the middle parts of the two first earring plates (41) are sleeved with an elastic rope (42), and the ends of the elastic ropes (42) are connected to the second earring plates (43), and the inner sides of the second earring plates (43) are fixed with a needle cannula (44).
7. The anti-blood-backflow disposable infusion set according to claim 6, characterized in that: The interior of the needle sleeve (44) matches the size of the first needle (2) and the second needle (3).