Safe retractable infusion device
By designing a safe retractable infusion device that hides the needle and ensures stable connection through the fit of the locking pin and limiting slot, the problems of needle exposure and shedding of the existing infusion device are solved, reducing the risk of stab wounds and infection.
Patent Information
- Application Number
- CN202420748923.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-04-12
AI Technical Summary
The exposure of needles of existing infusion devices is at risk of stabbing and is prone to fall off from the infusion bag during infusion, resulting in increased risk of device contamination and infection.
A safe retractable infusion device is designed. By hiding the needle inside the connecting barrel and cooperating with the locking pin and the limiting groove, the stable connection between the needle and the mouth of the medicine liquid bottle is ensured to prevent falling off.
Effectively hide the needle, preventing medical staff from stabbing, and through a stable connection structure, preventing the needle from falling off, reducing the risk of device contamination and infection.
Smart Images
Figure CN222467709U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical equipment, in particular to a safe retractable infusion device. Background Art
[0002] An infusion device is a device that uses gravity to achieve intravenous infusion. Its working principle is: "Under the action of atmospheric pressure, the liquid in the infusion bottle flows from the infusion hose into the drip bucket. When the pressure of the water column in the drip bucket is greater than the venous pressure in the body, the liquid in the infusion bottle flows from the hose into the vein." The infusion device has been sterilized and can establish a channel between the vein and the medicine.
[0003] The needles of the infusion devices currently used in clinical practice are exposed, posing a risk of needlestick injuries. The needles may also fall off the infusion bag during infusion, contaminating the infusion device and increasing the risk of infection. Utility Model Content
[0004] The utility model aims to provide a safe retractable infusion device, which has the characteristics of hiding the needle and preventing the needle from falling off during infusion.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a safe retractable infusion device, comprising a needle and a medicine bottle mouth, the outer wall of the needle is fixedly connected to a connecting block, the outer wall of the connecting block is rotatably connected to a connecting cylinder located outside the needle, the interior of the connecting cylinder is slidably connected to a moving plate, the upper end surface of the moving plate is penetrated by a through hole, one end of the needle passes through the through hole and extends above it, a spring sleeved on the outer side of the needle is fixedly connected between the moving plate and the inner lower end of the connecting cylinder, and the inner wall of the connecting cylinder is fixedly connected to two bayonet pins distributed on the left and right and located above the moving plate;
[0006] The outer wall of the medicine liquid bottle mouth is provided with two L-shaped limiting grooves which match the bayonet pins.
[0007] In order to prevent dust or other debris from entering the connecting tube, as a preferred safety retractable infusion device of the utility model, the upper end of the connecting tube is movably connected with a tube cover.
[0008] In order to prevent the bayonet from slipping out of the limiting groove, as a preferred safety retractable infusion device of the utility model, the insides of the two limiting grooves are fixedly connected with stoppers.
[0009] In order to facilitate the delivery of the liquid medicine in the liquid medicine bottle, as a preferred safe retractable infusion device of the utility model, the other end of the needle is connected to an infusion pipeline.
[0010] In order to prevent the tube cover from being lost, as a preferred safety-type retractable infusion device of the present invention, a drawstring is fixedly connected between the tube cover and the connecting tube.
[0011] In order to facilitate the mouth of the medicine bottle to enter the connecting tube, as a preferred safety retractable infusion device of the utility model, the outer diameter of the mouth of the medicine bottle is the same as the inner diameter of the connecting tube.
[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0013] Since the needle is located inside the connecting cylinder, the needle can be hidden to prevent the needle from stabbing medical staff. Then the mouth of the medicine bottle is inserted into the connecting cylinder to allow the needle to enter the mouth of the medicine bottle. The mouth of the medicine bottle continues to enter the connecting cylinder to allow the bayonet to enter the limiting groove until the bayonet abuts against the inner upper end of the limiting groove. At the same time, the mouth of the medicine bottle presses the moving plate downward to contract the spring. Then the connecting cylinder is rotated, and the connecting cylinder drives the two bayonet pins to move so that the bayonet pin reaches the other end of the limiting groove. The connecting cylinder is fixed to the outer wall of the mouth of the medicine bottle through the mutual cooperation of the limiting groove and the bayonet pin. At the same time, a reaction force is generated between the connecting cylinder and the mouth of the medicine bottle through the rebound force of the spring, thereby stably fixing the connecting cylinder to prevent the connecting cylinder from shaking up and down. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0015] Figure 2 This is a front cross-sectional structural schematic diagram of the utility model;
[0016] Figure 3 This is a schematic diagram of the three-dimensional structure of the cylinder cover of the utility model;
[0017] In the figure: 1. needle; 2. mouth of the medicine bottle; 3. connecting block; 4. connecting tube; 5. moving plate; 6. spring; 7. latch; 8. limiting groove; 9. tube cover; 10. stopper; 11. infusion pipeline; 12. pull rope. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, in the description of the utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0019] See also Figures 1 to 3 A safe retractable infusion device comprises a needle 1 and a medicine bottle mouth 2, the outer wall of the needle 1 is fixedly connected with a connecting block 3, the outer wall of the connecting block 3 is rotatably connected with a connecting tube 4 located outside the needle 1, the interior of the connecting tube 4 is slidably connected with a moving plate 5, the upper end surface of the moving plate 5 is penetrated with a through hole, one end of the needle 1 passes through the through hole and extends above it, a spring 6 sleeved on the outer side of the needle 1 is fixedly connected between the moving plate 5 and the inner lower end of the connecting tube 4, and two bayonet pins 7 distributed on the left and right and located above the moving plate 5 are fixedly connected to the inner wall of the connecting tube 4;
[0020] The outer wall of the medicine bottle mouth 2 is provided with two L-shaped limiting grooves 8 which match the latch 7 .
[0021] After the needle tip 1 is in use, the needle tip 1 can be hidden because the needle tip 1 is located inside the connecting tube 4 to prevent the needle tip 1 from stabbing the medical staff. Then the connecting tube 4 is moved, the mouth of the medicine bottle 2 is inserted into the connecting tube 4, and the needle tip 1 enters the mouth of the medicine bottle 2. Then the mouth of the medicine bottle 2 continues to enter the connecting tube 4, so that the bayonet 7 enters the limiting groove 8 until the bayonet 7 abuts against the inner upper end of the limiting groove 8. At the same time, the mouth of the medicine bottle 2 presses the movable plate 5 downward to shrink the spring 6. Then the connecting tube 4 is rotated, and the connecting tube 4 drives the two bayonet pins 7 to move, so that the bayonet pin 7 reaches the other end of the limiting groove 8. The connecting tube 4 is fixed to the outer wall of the mouth of the medicine bottle 2 through the cooperation between the limiting groove 8 and the bayonet pin 7. At the same time, the rebound force of the spring 6 generates a reaction force between the connecting tube 4 and the mouth of the medicine bottle 2, thereby stably fixing the connecting tube 4 to prevent the connecting tube 4 from shaking up and down.
[0022] As a technical optimization solution of the utility model, the upper end of the connecting cylinder 4 is movably connected with a cylinder cover 9.
[0023] In this embodiment, a tube cover 9 is movably connected to the upper end of the connecting tube 4 . When not in use, the tube cover 9 can prevent dust or other debris from entering the connecting tube 4 .
[0024] As a technical optimization solution of the present invention, a stopper 10 is fixedly connected inside the two limiting grooves 8 .
[0025] In this embodiment: the inside of the two limiting grooves 8 are fixedly connected with a stopper 10, and the stopper 10 can block the bayonet 7 to prevent the bayonet 7 from sliding out of the limiting groove 8 and causing the connecting tube 4 to fall off.
[0026] As a technical optimization solution of the present invention, the other end of the needle 1 is connected to an infusion pipeline 11.
[0027] In this embodiment: the other end of the needle 1 is connected to an infusion pipe 11, and the infusion pipe 11 is convenient for conveying the liquid medicine in the liquid medicine bottle.
[0028] As a technical optimization solution of the present utility model, a pull rope 12 is fixedly connected between the cylinder cover 9 and the connecting cylinder 4 .
[0029] In this embodiment: a drawstring 12 is fixedly connected between the cylinder cover 9 and the connecting cylinder 4. When in use, the drawstring 12 can prevent the cylinder cover 9 from being lost.
[0030] As a technical optimization solution of the present utility model, the outer diameter of the medicine bottle mouth 2 is the same as the inner diameter of the connecting tube 4.
[0031] In this embodiment, the outer diameter of the medicine liquid bottle mouth 2 is the same as the inner diameter of the connecting tube 4 , so that the medicine liquid bottle mouth 2 can easily enter the connecting tube 4 .
[0032] Working principle: when in use, first take off the tube cover 9 from the upper end of the connecting tube 4, then move the connecting tube 4, insert the mouth of the medicine liquid bottle 2 into the connecting tube 4, make the needle 1 enter the mouth of the medicine liquid bottle 2, and then the mouth of the medicine liquid bottle 2 continues to enter the connecting tube 4, so that the bayonet 7 enters the limiting groove 8 until the bayonet 7 abuts against the inner upper end of the limiting groove 8. At the same time, the mouth of the medicine liquid bottle 2 presses the movable plate 5 downward to shrink the spring 6, and then rotate the connecting tube 4. The connecting tube 4 drives the two bayonet pins 7 to move so that the bayonet pin 7 reaches the other end of the limiting groove 8. The connecting tube 4 is fixed to the outer wall of the mouth of the medicine liquid bottle 2 through the mutual cooperation of the limiting groove 8 and the bayonet pin 7. At the same time, the rebound force of the spring 6 generates a reaction force between the connecting tube 4 and the mouth of the medicine liquid bottle 2, thereby stably fixing the connecting tube 4 to prevent the connecting tube 4 from shaking up and down.
[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A safe retractable infusion device, comprising a needle (1) and a liquid medicine bottle mouth (2), characterized in that: The outer wall of the needle (1) is fixedly connected to a connecting block (3), the outer wall of the connecting block (3) is rotatably connected to a connecting tube (4) located outside the needle (1), the interior of the connecting tube (4) is slidably connected to a moving plate (5), the upper end surface of the moving plate (5) is penetrated by a through hole, one end of the needle (1) passes through the through hole and extends above it, a spring (6) sleeved on the outer side of the needle (1) is fixedly connected between the moving plate (5) and the inner lower end of the connecting tube (4), and two bayonet pins (7) distributed on the left and right and located above the moving plate (5) are fixedly connected to the inner wall of the connecting tube (4); The outer wall of the liquid medicine bottle mouth (2) is provided with two L-shaped limiting grooves (8) matching with the bayonet pin (7).
2. A safe retractable infusion device according to claim 1, characterized in that: The upper end of the connecting cylinder (4) is movably connected to a cylinder cover (9).
3. A safe retractable infusion device according to claim 1, characterized in that: Stoppers (10) are fixedly connected inside the two limiting grooves (8).
4. A safe retractable infusion device according to claim 1, characterized in that: The other end of the needle (1) is connected to an infusion pipeline (11).
5. A safe retractable infusion device according to claim 2, characterized in that: A drawstring (12) is fixedly connected between the cylinder cover (9) and the connecting cylinder (4).
6. A safe retractable infusion device according to claim 1, characterized in that: The outer diameter of the medicine liquid bottle mouth (2) is the same as the inner diameter of the connecting tube (4).