Semi-automatic pressure regulation injector
By introducing structures such as tension springs, sliding blocks, and indicator rings into the syringe, the problem of inaccurate pressure and flow control in traditional syringes is solved, achieving uniform pressure control and improving the safety and accuracy of injection.
Patent Information
- Application Number
- CN202422934508.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2034-11-29
AI Technical Summary
Traditional manual syringe operation relies on the experience of medical staff, which makes it impossible to achieve precise pressure and flow control, resulting in uneven drug injection, affecting treatment effectiveness and patient comfort.
A semi-automatic pressure regulating injector was designed. By setting a tension spring, a sliding block, a connecting rod, and an indicator ring on the mounting tube, precise control of pressure and flow can be achieved. The injection pressure is adjusted by the deformation of the tension spring, and pressure feedback is provided through the scale groove and the indicator ring.
It achieves uniform control of injection pressure, improves the safety and accuracy of medical injections, and avoids the impact on patient discomfort and treatment effectiveness.
Smart Images
Figure CN223846047U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of injectors, in particular to a semi-automatic pressure regulating injector. BACKGROUND
[0002] An injector is a common medical tool used to extract, inject, gas or liquid, the process is called injection, the injector is composed of a needle cylinder with a small hole at the front end and a piston core rod matched with the needle cylinder, and is used to inject a small amount of liquid or to access areas that cannot be accessed by other methods, or to extract from those places, liquid or gas is sucked from the small hole at the front end of the needle cylinder when the core rod is pulled out, and liquid or gas is injected when the core rod is pushed in.
[0003] In the medical field, the traditional manual injector still occupies the dominant position, but since its operation depends on the experience of medical staff, it cannot realize accurate pressure and flow control, and is easy to cause uneven injection of liquid medicine, which brings discomfort to patients or affects the treatment effect. CONTENT OF THE UTILITY MODEL
[0004] In view of the defects of the prior art, the application provides a semi-automatic pressure regulating injector, which has the advantages of convenient pressure control, solves the problem that the traditional manual injector still occupies the dominant position, but since its operation depends on the experience of medical staff, it cannot realize accurate pressure and flow control, and is easy to cause uneven injection of liquid medicine, which brings discomfort to patients or affects the treatment effect.
[0005] To achieve the above purpose, the application provides the following technical scheme: a semi-automatic pressure regulating injector, comprising a needle cylinder and a fixed plate, the inside of the needle cylinder is slidably connected with a piston, the surface of the piston is fixedly connected with a push rod, the end of the push rod away from the piston is fixedly connected with a connecting block, the surface of the connecting block is fixedly connected with a mounting pipe, the inside of one end of the mounting pipe is fixedly connected with a connecting plate, the surface of one side of the connecting plate is fixedly connected with a first mounting ring in the middle, the surface of one side of the fixed plate corresponding to the connecting plate is fixedly connected with a second mounting ring, a tension spring is arranged between the first mounting ring and the second mounting ring, both ends of the fixed plate are fixedly connected with sliding blocks, and the surface of the sliding block is slidably connected with the inner wall of the needle cylinder.
[0006] Through the above scheme, when the medical staff starts to press the push plate, the pushing force is transmitted to the sliding block through the connecting rod, so that the sliding block drives the fixed plate to move, at the same time, since the fixed plate is fixedly connected with the second mounting ring, the movement of the fixed plate will pull the tension spring to stretch, and as the force of the medical staff pressing the push plate increases, the degree of deformation of the tension spring also increases.
[0007] Further, the surface of each of the two sliding blocks is fixedly connected with a connecting rod, and the ends of the two connecting rods away from the sliding blocks are fixedly connected with a push plate.
[0008] Through the above scheme, when the medical staff presses the push plate with hands, the pushing force is uniformly transmitted to the two sliding blocks through the connecting rod, and the sliding blocks slide along the installation pipe under the action of the pushing force, and the installation pipe, the push rod and the piston and other components are moved under the action of the tension spring.
[0009] Further, the installation pipe is internally provided with two mirror image distributed sliding grooves, the surfaces of the two sliding blocks are fixedly connected with installation columns, one end of the installation column penetrates the sliding groove and is fixedly connected with an indicating ring, and the surface of the installation column is slidingly connected with the inner wall of the sliding groove.
[0010] Through the above scheme, the movement of the sliding block drives the movement of the installation column and the indicating ring, and since the surface of the installation column is slidingly connected with the inner wall of the sliding groove, it ensures that the indicating ring can move smoothly along the outer surface of the installation pipe.
[0011] Further, a plurality of scale grooves are arranged in a straight line array on the surface of one end of the installation pipe.
[0012] Through the above scheme, the scale groove and the indicating ring work together, and when the indicating ring moves to a certain scale groove, the medical staff can immediately know the current injection pressure.
[0013] Further, the inner wall of the installation pipe is fixedly connected with two mirror image distributed and corresponding stop blocks of the sliding blocks.
[0014] Through the above scheme, the existence of the stop block limits the movement range of the sliding block in the installation pipe, and when the sliding block moves to the position of the stop block, its movement will be stopped, thereby preventing the sliding block from being pulled out of the installation pipe or moving excessively.
[0015] Further, a needle is inserted into one end of the needle cylinder.
[0016] Through the above scheme, the medical staff needs to stab the needle into the patient's skin for injection during the injection process.
[0017] Further, a hand support is fixedly connected to the end of the needle cylinder away from the needle.
[0018] Through the above scheme, the hand support provides a stable support point for the hands of the medical staff, so that the direction and force of the syringe can be better controlled during the injection process.
[0019] Further, a plurality of scale lines are fixedly connected to the surface of the needle cylinder.
[0020] Through the above scheme, the scale line provides a clear dose reference for the medical staff, and can accurately measure and inject the required amount of liquid medicine.
[0021] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:
[0022] The semi-automatic pressure regulating syringe is characterized in that a tension spring is arranged between the first mounting ring and the second mounting ring, a plurality of scale grooves are arranged on one end of the mounting pipe, sliding blocks are arranged on both sides of the fixed plate, a push plate is arranged on the surface of the sliding block through a connecting rod, and an indicating ring is arranged on the surface of the sliding block through a mounting column. In the initial state during the injection process, the tension spring is in an undeformed state, and the indicating ring is located at the starting position of the scale groove. When the medical staff starts to press the push plate, the pushing force is transmitted to the sliding block through the connecting rod, so that the fixed plate is moved. At the same time, due to the fixed connection between the fixed plate and the second mounting ring, the movement of the fixed plate will stretch the tension spring. With the increase of the force of the medical staff pressing the push plate, the deformation degree of the tension spring also increases, which leads to the increase of the displacement distance of the indicating ring, that is, the position of the indicating ring on the scale groove changes obviously. The medical staff can intuitively understand the size of the current injection pressure by observing the relative position between the indicating ring and the scale groove. The scale groove enables the medical staff to accurately control the injection pressure, so that the pressure during the injection process is more uniform, the safety and accuracy of medical injection are improved, and the patient's discomfort and the influence on the treatment effect are avoided. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 It is a schematic diagram of the overall structure of the present application;
[0024] Figure 2 It is a partial sectional view of the tension spring mounting structure of the present application;
[0025] Figure 3 It is a partial sectional view of the push rod mounting structure of the present application;
[0026] Figure 4 It is Figure 2 It is an enlarged view of structure A in the middle.
[0027] In the figure:
[0028] 1, syringe; 2, handle; 3, scale line; 4, needle; 5, push rod; 6, piston; 7, connecting block; 8, mounting pipe; 9, connecting plate; 10, first mounting ring; 11, tension spring; 12, sliding block; 13, fixed plate; 14, second mounting ring; 15, connecting rod; 16, push plate; 17, sliding groove; 18, indicating ring; 19, stop block; 20, scale groove; 21, mounting column. DETAILED DESCRIPTION
[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than 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.
[0030] Please refer to Figure 1 , Figure 2 and Figure 3 , a semi-automatic pressure regulating syringe in the embodiment includes a needle cylinder 1 and a fixed plate 13, the inside of the needle cylinder 1 is slidably connected with a piston 6, the surface of the piston 6 is fixedly connected with a push rod 5, the end of the push rod 5 away from the piston 6 is fixedly connected with a connecting block 7, the surface of the connecting block 7 is fixedly connected with a mounting tube 8, one end of the inside of the mounting tube 8 is fixedly connected with a connecting plate 9, the middle of one side surface of the connecting plate 9 is fixedly connected with a first mounting ring 10, the side surface of the connecting plate 9 corresponding to the connecting plate 9 is fixedly connected with a second mounting ring 14, the first mounting ring 10 and the second mounting ring 14 are provided with a pull spring 11, both ends of the fixed plate 13 are fixedly connected with a sliding block 12, the surface of the sliding block 12 is slidably connected with the inner wall of the needle cylinder 1, the surface of both sliding blocks 12 is fixedly connected with a connecting rod 15, the end of both connecting rods 15 away from the sliding block 12 is fixedly connected with a push plate 16, when the medical staff presses the push plate 16 with hands, the pushing force is evenly transmitted to both sliding blocks 12 through the connecting rod 15, the sliding block 12 will slide along the mounting tube 8 under the action of the pushing force, at the same time, the mounting tube 8, the push rod 5 and the piston 6 and other components are moved under the action of the pull spring 11, when the medical staff starts to press the push plate 16, the pushing force is transmitted to the sliding block 12 through the connecting rod 15, so that the fixed plate 13 is driven to slide along the inner wall of the needle cylinder 1. At the same time, due to the fixed connection between the fixed plate 13 and the second mounting ring 14, the movement of the fixed plate 13 will pull the pull spring 11 to stretch. As the medical staff presses the push plate 16 with greater force, the deformation degree of the pull spring 11 also increases.
[0031] Please refer to Figure 2 and Figure 4 , two sliding grooves 17 are formed in the inside of the mounting tube 8, the surface of both sliding blocks 12 is fixedly connected with a mounting column 21, one end of the mounting column 21 penetrates through the sliding groove 17 and is fixedly connected with an indicating ring 18, the surface of the mounting column 21 is slidably connected with the inner wall of the sliding groove 17, the movement of the sliding block 12 drives the movement of the mounting column 21 and the indicating ring 18, due to the sliding connection between the surface of the mounting column 21 and the inner wall of the sliding groove 17, it ensures that the indicating ring 18 can move smoothly along the outer surface of the mounting tube 8, a plurality of scale grooves 20 are formed in the surface of one end of the mounting tube 8, the scale grooves 20 and the indicating ring 18 work together, when the indicating ring 18 moves to a certain scale groove 20, the medical staff can immediately know the current injection pressure, the inner wall of the mounting tube 8 is fixedly connected with two stop blocks 19 which are mirror images and correspond to the sliding blocks 12, the existence of the stop blocks 19 limits the movement range of the sliding blocks 12 in the mounting tube 8, when the sliding block 12 moves to the position of the stop block 19, its movement will be stopped, so as to prevent the sliding block 12 from being pulled out of or moving excessively in the mounting tube 8.
[0032] Please refer to Figure 1 The syringe 1 is inserted with a needle 4 at one end, and the needle 4 needs to be pierced into the patient's skin for injection during the injection process. The syringe 1 is fixedly connected with a handle 2 at the end away from the needle 4, which provides a stable support point for the hands of medical staff, so that the direction and force of the syringe can be better controlled during the injection process. The surface of the syringe 1 is fixedly connected with a plurality of scale lines 3, which provide a clear dose reference for medical staff and can accurately measure and inject the required amount of liquid medicine.
[0033] In the embodiment, the injection pressure is adjusted by the deformation degree of the tension spring 11. When the medical staff presses the push plate 16, the pushing force is transmitted to the sliding block 12 through the connecting rod 15, and then the fixed plate 13 is moved. Since the fixed plate 13 is fixedly connected with the second mounting ring 14, its movement will stretch the tension spring 11. With the increase of the pressing force, the deformation degree of the tension spring 11 increases, and the movement of the sliding block 12 drives the movement of the mounting column 21 and the indicating ring 18. The indicating ring 18 moves along the outer surface of the mounting tube 8 and cooperates with the scale groove 20, so that the medical staff can intuitively understand the size of the current injection pressure.
[0034] The working principle of the above embodiment is as follows:
[0035] Hold the handle 2 and hold the syringe stably in your hand, then pierce the needle 4 into the patient's skin. In the initial state, the indicating ring 18 is located at the starting position of the scale groove 20, and the tension spring 11 is in the undeformed state. Then press the push plate 16, the pushing force is transmitted to the sliding block 12 through the connecting rod 15, the sliding block 12 slides along the inner wall of the syringe 1, and drives the movement of the mounting column 21 and the indicating ring 18. With the movement of the sliding block 12, the indicating ring 18 also moves stably along the outer surface of the mounting tube 8, and passes through the scale groove 20 one by one. The medical staff can intuitively understand the size of the current injection pressure by observing the relative position between the indicating ring 18 and the scale groove 20. By observing the movement of the indicating ring 18 on the scale groove 20, the medical staff can adjust the pressing force of the push plate 16 as needed to control the injection pressure. When the indicating ring 18 moves to the required scale groove 20, keep the pressing force of the push plate 16 stable, and perform injection. When the injection is completed, gradually reduce the pressing force of the push plate 16, so that the tension spring 11 gradually returns to its original state, the needle 4 is pulled out, and the waste is properly handled. The precise design of the scale groove 20 enables medical staff to accurately control the injection pressure, making the injection pressure more uniform during the injection process, improving the safety and accuracy of medical injection, avoiding causing discomfort to the patient, and at the same time affecting the treatment effect.
[0036] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the enclosed claims. That is, although the present application is described in terms of particular embodiments and illustrative figures, it should be apparent that the application can be varied in a multitude of ways. Such alterations, many of which will be apparent to those skilled in the art, can be based on current technology, and as such, this application should not be limited to the particular embodiments described herein, but should be understood to include all embodiments that are within the scope of the appended claims and their equivalents.
[0037] While the embodiments of the application have been shown and described herein, it will be understood by those skilled in the art that many changes, modifications, substitutions and alterations to these embodiments can be made without departing from the principles and spirits of the application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A semi-automatic pressure regulating syringe comprising a barrel (1) and a fixing plate (13), characterized in that: The needle cylinder (1) is internally slidably connected with a piston (6), the piston (6) is fixedly connected with a push rod (5) on the surface, the push rod (5) is fixedly connected with a connecting block (7) away from the piston (6), the connecting block (7) is fixedly connected with a mounting pipe (8) on the surface, the mounting pipe (8) is internally fixedly connected with a connecting plate (9) at one end, the connecting plate (9) is fixedly connected with a first mounting ring (10) on the surface on one side, the fixed plate (13) is fixedly connected with a second mounting ring (14) on the surface on the side corresponding to the connecting plate (9), the first mounting ring (10) and the second mounting ring (14) are provided with a tension spring (11) therebetween, the fixed plate (13) is fixedly connected with a sliding block (12) at both ends, and the sliding block (12) is slidably connected with the inner wall of the needle cylinder (1) on the surface.
2. A semi-automatic pressure regulated syringe according to claim 1, wherein: The surfaces of the two sliding blocks (12) are fixedly connected with connecting rods (15), and the connecting rods (15) away from the sliding blocks (12) are commonly fixedly connected with a push plate (16).
3. A semi-automatic pressure regulated syringe according to claim 1, wherein: The mounting pipe (8) is internally provided with two sliding grooves (17) which are mirror image distributed, the surfaces of the two sliding blocks (12) are fixedly connected with mounting columns (21), the mounting columns (21) penetrate through the sliding grooves (17) at one end and are fixedly connected with indicating rings (18), and the mounting columns (21) are slidably connected with the inner wall of the sliding groove (17) on the surface.
4. A semi-automatic pressure regulated syringe according to claim 1, wherein: A plurality of scale grooves (20) which are linearly arrayed are formed on the surface of the mounting pipe (8) at one end.
5. A semi-automatic pressure regulated syringe according to claim 1, wherein: The inner wall of the mounting pipe (8) is fixedly connected with two stop blocks (19) which are mirror image distributed and correspond to the sliding blocks (12).
6. A semi-automatic pressure regulated syringe according to claim 1, wherein: The needle cylinder (1) is inserted with a needle (4) at one end.
7. A semi-automatic pressure regulated syringe according to claim 1, wherein: The needle cylinder (1) is fixedly connected with a handle (2) away from the needle (4) at one end.
8. A semi-automatic pressure regulated syringe according to claim 1, wherein: The surface of the needle cylinder (1) is fixedly connected with a plurality of scale lines (3).