A syringe assembly

Abstract

This application relates to the field of medical devices, and more particularly to a syringe assembly, comprising: a first connector, a liquid channel, a handle, and a second connector. The handle is sleeved outside the liquid channel. A control unit and a visualization unit are disposed on the liquid channel. The control unit includes a sealing barrier, a control channel, an elastic element, and a button. The control unit controls the control channel to communicate with the liquid channel. Furthermore, the visualization unit includes a guide element and an impeller. Fluid enters the visualization unit through the guide element, and the impeller rotates as the fluid enters.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a syringe assembly. Background Technology

[0002] As is well known, injectable fluids can be delivered into human blood vessels or muscle tissue via connectors. When administering anesthetics, tumescent fluids, saline solutions, etc., peristaltic pumps are often used to control the flow rate and volume of the fluid. This method of infusion is not only costly but also inconvenient to operate.

[0003] Patent JP2001197409 discloses a flow regulator comprising: a carrier; an operating member slidably engaged with a support; and a portion of the outer periphery supported by a support member located between the support member and the operating member. It also includes a flow path control member made of a rigid material, which is in close contact with and partially fixed to the support side of the inner cavity of a cylinder forming a fluid flow path. The operating member has a pressing portion for pressing the outer periphery of the cylinder on the flow path side, and the cylinder or flow path control member is formed by the cylinder. It has a control groove extending axially, and the cross-sectional shape of the two ends of the flow path control member near the boundary between the cylinder and the flow path control member has a continuous, gently rounded shape. The technical drawback of this solution is that while the actuating member adjusts the flow rate by moving the support member along the axial direction of the cylinder, the flow regulator is difficult to remove during surgery, easily obstructing the scale, which is not user-friendly, and the single-handed sliding operation unit is very inconvenient, reducing surgical efficiency.

[0004] In summary, the existing technology has the following urgent problems that need to be solved: how to ensure that the operator can operate the syringe assembly and adjust the flow rate of the injected drug with one hand. Utility Model Content

[0005] This application is made in view of the above and other ideas.

[0006] One of the purposes of this application is to overcome the shortcomings of the prior art and to provide an injection component that addresses the problem that the injection components in the prior art cannot simultaneously guarantee one-handed operation and adjustment of injection fluid flow.

[0007] The objective of this utility model is achieved through the following solution: A syringe assembly includes: a first connector, a liquid channel, a handle, and a second connector. The handle is sleeved outside the liquid channel. A control unit and a visualization unit are disposed on the liquid channel. The control unit includes a sealing barrier, a control channel, an elastic element, and a button. The control unit controls the control channel to communicate with the liquid channel. The visualization unit includes a guide element and an impeller. Fluid enters the visualization unit through the guide element, and the impeller rotates as the fluid enters.

[0008] The objective of this utility model can also be further achieved through the following technical solutions: In one embodiment, the liquid flow channel is divided into a first flow channel, a second flow channel, and a third flow channel from far to near, the control unit is disposed between the first flow channel and the second flow channel, and the visualization unit is disposed between the second flow channel and the third flow channel.

[0009] In one embodiment, the first flow channel, the second flow channel, and the third flow channel have the same cross-sectional area.

[0010] In one embodiment, the control unit further includes a limiting guide boss and a mounting groove, and the sealing block is installed in the mounting groove; and the control unit further includes a sealing ring and a retaining groove, and the sealing ring is disposed on the retaining groove.

[0011] In one embodiment, the sealing ring prevents fluid leakage to the handheld part.

[0012] In one embodiment, the handheld part is a housing.

[0013] In one embodiment, the side of the control unit is generally T-shaped.

[0014] In one embodiment, the limiting guide boss is connected to the handheld part to ensure that the control unit will not rotate and that the control unit can only move up and down in a single direction.

[0015] In one embodiment, the elastic element is a spring, which is disposed below the button; and, in its natural state, the control channel is not in contact with the liquid flow channel. When the button is pressed, the elastic element is compressed, and the control channel moves toward the liquid flow channel.

[0016] In one embodiment, pressing the button connects the control channel to the liquid flow channel, and fluid begins to enter the patient's body; and the greater the lateral overlap area between the control channel and the liquid flow channel, the greater the fluid flow rate.

[0017] In one implementation, the further the button is pressed down, the greater the fluid flow and the faster the impeller rotates.

[0018] In one implementation, releasing the button directly ends the injection operation.

[0019] In one embodiment, in its natural state, there is a safe distance between the lower part of the control unit and the liquid flow channel, and the stroke of the elastic element is greater than the safe distance.

[0020] In one embodiment, the flow guide includes a flow guide hole, a flow guide cavity, and a limiting groove. The limiting groove is fixedly connected to the liquid flow channel, and the fluid enters the flow guide cavity through the flow guide hole.

[0021] In one embodiment, the impeller section includes a central shaft and a plurality of impellers, the impellers being straight or curved, and the impellers rotating in response to the fluid.

[0022] In one implementation, once the impeller begins to rotate, it signals to the operator that fluid has begun to enter the patient's tissue.

[0023] In one embodiment, the fluid flowing through the impeller forms a ring flow, which has a certain fluid acceleration function.

[0024] In one embodiment, the visualization unit includes a transparent cover that is concave and fixed to the surface of the handheld part.

[0025] In one embodiment, the cross-sections at both ends of the handheld portion are larger than the cross-section at the middle position; and the handheld portion located between the control unit and the visualization unit is provided with a friction-enhancing structure.

[0026] In one embodiment, the friction-enhancing structure is strip-shaped, increasing the contact area with the operator's hand.

[0027] In one embodiment, the second connector includes an inner conical joint, and the first connector includes an outer conical joint and a locking cap. The first connector is connected to the injection needle, and fluid passes through the second connector to reach the injection needle.

[0028] In one embodiment, the second connector is connected to an infusion tube, an infusion bag, or an infusion pump.

[0029] In one embodiment, the fluid is an anesthetic, a swelling fluid, or another therapeutic fluid.

[0030] Compared with the prior art, the advantages of the technical solution of this application include at least the following: 1. Existing syringe assemblies, due to the need for an axially sliding operating unit to control fluid velocity, suffer from problems such as obstruction of the flow rate scale. Furthermore, the need for finger sliding makes it inconvenient to hold the flow controller with one hand, resulting in poor hand stability and failing to meet human-computer interaction requirements. Additionally, there is no intuitive indication that the fluid has begun to enter the target tissue. This application solves these problems. First, the control unit opens the liquid flow channel and controls the fluid flow by pressing a button, requiring minimal finger movement during operation and making it easier to hold the syringe stably. Second, because this application incorporates a visualization unit, the rotation of the impeller indicates that the fluid has begun to enter the human tissue, signifying successful injection. The operator can directly observe the acceleration and deceleration of the impeller rotation to help judge the injection rate. Therefore, the injection assembly of this application not only has a simple and ingenious structural design but also improves operational efficiency in clinical practice, making it highly valuable for widespread application.

[0031] 2. Unlike existing technologies, the liquid flow channel is divided into a first flow channel, a second flow channel, and a third flow channel from far to near. The segmented design not only does not increase the overall length of the liquid flow channel, but also provides assembly space for the control unit and the visualization unit, resulting in excellent space utilization.

[0032] 3. Unlike existing technologies, in its natural state, the elastic element does not contact the control channel with the liquid flow channel. When the button is pressed, the elastic element is compressed, and the control channel moves towards the liquid flow channel until the control channel and the liquid flow channel are connected. The injected liquid successfully moves towards the first connector. The disconnection and connection of the passage only requires the cooperation of the button and the elastic element. The structure is simple and the success rate is high.

[0033] 4. Unlike existing technologies, the handheld part located between the control unit and the visualization unit is equipped with a friction-enhancing structure, that is, the flow rate is controlled at the far end of the hand grip position, and the flow rate is judged at the near end. The two judgments are performed simultaneously, making the operation extremely convenient.

[0034] The embodiments of this application can achieve other advantageous technical effects not listed one by one, which may be partially described below; and these other technical effects can be expected and understood by those skilled in the art after reading this application. Attached Figure Description

[0035] The above-described features and advantages of these embodiments, as well as other features and advantages, and the ways in which they are implemented, will become more apparent from the following description in conjunction with the accompanying drawings; and embodiments of this application can be better understood, in which: Figure 1 This is a schematic diagram of the syringe assembly of this utility model.

[0036] Figure 2 This is a schematic diagram of the syringe assembly of this utility model in a horizontally placed state.

[0037] Figure 3 This is a schematic diagram showing the internal structure of the first connector, liquid flow channel, handheld part, and second connector of the syringe assembly of this utility model.

[0038] Figure 4 This is a schematic diagram of the control unit of this utility model.

[0039] Figure 5 This is a schematic diagram of the flow guide of this utility model.

[0040] Figure 6 and Figure 7 This is a schematic diagram of different embodiments of the impeller part of this utility model.

[0041] The features represented by the numbers in the attached diagram are as follows: 1-First connector, 11-External conical joint connector, 12-Locking cap, 2-Liquid flow channel, 21-First flow channel, 22-Second flow channel, 23-Third flow channel, 3-Handheld part, 31-Friction-enhancing structure, 4-Second connector, 5-Control unit, 51-Sealing barrier, 52-Control channel, 53-Elastic element, 54-Button, 55-Limiting guide boss, 56-Mounting groove, 57-Sealing ring, 58-Slot, 59-Safety distance, 6-Visualization unit, 61-Flow guide, 611-Flow guide hole, 612-Flow guide cavity, 613-Limiting groove, 62-Impeller part, 621-Central shaft, 622-Impeller, 63-Transparent cover. Detailed Implementation

[0042] The details of one or more embodiments of this application will be set forth in the following description of the accompanying drawings and specific embodiments. Other features, objects, and advantages of this application will become clear from these descriptions, drawings, and claims.

[0043] It should be understood that the phrases and terms used in this document are for descriptive purposes and should not be considered restrictive. The use of “including,” “contains,” or “has,” and their variations, in this document is intended to include, in an open-ended manner, the items listed thereafter, their equivalents, and any additional items.

[0044] The present application will now be described in more detail with reference to various embodiments and examples of several aspects thereof.

[0045] In this application, the terms "proximal" or "proximal" refer to the end or side closer to the surgeon, and "distal" or "distal" refer to the end or side farther from the surgeon.

[0046] Example 1 like Figures 1-3As shown, when used for injecting liquid, the present invention illustrates a syringe assembly according to an embodiment of this application, including: a first connector 1, a liquid flow channel 2, a handle 3, and a second connector 4. The handle 3 is sleeved on the liquid flow channel 2. A control unit 5 and a visualization unit 6 are provided on the liquid flow channel 2. The control unit 5 includes a sealing block 51, a control channel 52, an elastic element 53, and a button 54. The control unit 5 controls the control channel 52 to communicate with the liquid flow channel 2. Furthermore, the visualization unit 6 includes a guide 61 and an impeller 62. Fluid enters the visualization unit 6 through the guide 61, and the impeller 62 rotates as the fluid enters.

[0047] The objective of this utility model can also be further achieved through the following technical solutions: In this first embodiment, the liquid flow channel 2 is divided into a first flow channel 21, a second flow channel 22, and a third flow channel 23 from far to near, as follows: Figure 3 As shown, the control unit 5 is disposed between the first flow channel 21 and the second flow channel 22, and the visualization unit 6 is disposed between the second flow channel 22 and the third flow channel 23.

[0048] In this first embodiment, the first flow channel 21, the second flow channel 22 and the third flow channel 23 have the same cross-sectional area.

[0049] In this first embodiment, the control unit 5 further includes a limiting guide boss 55 and a mounting groove 56, and the sealing blocking member 51 is installed in the mounting groove 56; in addition, the control unit 5 also includes a sealing ring 57 and a slot 58, and the sealing ring 57 is disposed on the slot 58.

[0050] In this first embodiment, the side of the control unit 5 is generally T-shaped, such as... Figure 4 As shown.

[0051] In this first embodiment, the sealing ring 57 can prevent fluid leakage to the handheld part 3.

[0052] In this first embodiment, the limiting guide boss 55 is connected to the handheld part 3 to ensure that the control unit 5 will not rotate and that the control unit 5 can only move up and down in a single direction.

[0053] In this first embodiment, the elastic element 53 is a spring, and the elastic element 53 is located below the button 54; and, in its natural state, the control channel 52 is not in contact with the liquid flow channel 2. When the button 54 is pressed, the elastic element 53 is compressed, and the control channel 52 moves toward the liquid flow channel 2.

[0054] In this first embodiment, pressing the button 54 connects the control channel 52 with the liquid flow channel 2, and the fluid begins to enter the patient's body; and the larger the lateral overlap area between the control channel 52 and the liquid flow channel 2, the greater the fluid flow rate.

[0055] In this first embodiment, the further down the button 54 is pressed, the greater the fluid flow and the faster the impeller 622 rotates.

[0056] In this first embodiment, when the button 54 is released, the elastic element 53 returns to its natural state, and the injection operation ends directly.

[0057] In this first embodiment, in its natural state, there is a safe distance 59 between the lower part of the control unit 5 and the liquid flow channel 2, and the stroke of the elastic member 53 is greater than the safe distance 59.

[0058] In this first embodiment, the flow guide 61 includes a flow guide hole 611, a flow guide cavity 612, and a limiting channel 613. The limiting channel 613 is fixedly connected to the liquid flow channel 2. Fluid enters the flow guide cavity 612 through the flow guide hole 611. Figure 3 and Figure 5 As shown.

[0059] In this first embodiment, the surface design of the flow guide cavity 612 allows the fluid to flow clockwise or counterclockwise.

[0060] In this first embodiment, the impeller section 62 includes a central shaft 621 and a plurality of impellers 622, wherein the impellers 622 are straight or curved, such as... Figure 6 and Figure 7 As shown, the impeller 622 rotates in response to the fluid.

[0061] In this first embodiment, once the impeller 622 starts to rotate, it signals to the operator that fluid has begun to enter the patient's tissue.

[0062] In this first embodiment, the fluid flowing through the impeller 622 will form a ring flow, which has a certain fluid acceleration function.

[0063] In this first embodiment, the visualization unit 6 includes a transparent cover 63, which is concave and fixed to the surface of the handheld part 3, as shown below. Figure 3 As shown.

[0064] In this first embodiment, the cross-sections at both ends of the handheld part 3 are larger than the cross-section at the middle position; and the handheld part 3 located between the control unit 5 and the visualization unit 6 is provided with a friction-increasing structure 31.

[0065] In this first embodiment, the friction-enhancing structure 31 is strip-shaped, increasing the contact area with the operator's hand.

[0066] In this embodiment, the second connector 4 includes an inner conical connector, and the first connector 1 includes an outer conical connector 11 and a locking cap 12. The distal end of the first connector 1 is connected to the injection needle, and the fluid passes through the second connector 4 and the liquid flow channel 2 to reach the injection needle.

[0067] In this first embodiment, the second connector 4 is connected to the infusion tube, infusion bag, or infusion pump.

[0068] In this first embodiment, the fluid is an anesthetic, a swelling solution, or another therapeutic fluid.

[0069] In this first embodiment, the surface of the impeller 622 cover is provided with a one-way injection channel, which not only does not affect the visibility of the impeller 622 cover, but also allows other fluids to be injected here.

[0070] In this first embodiment, the unidirectional injection channel is located at the center of the impeller 622 cover.

[0071] The foregoing description of several embodiments of this application has been provided for illustrative purposes. This foregoing description is not intended to be exhaustive, nor is it intended to limit the application to the precise configurations, constructions, and / or steps disclosed; obviously, many modifications and variations can be made in light of the teachings above. The scope of the invention and all its equivalents are intended to be defined by the appended claims.

Claims

1. A syringe assembly, characterized in that, include: The device comprises a first connector, a liquid flow channel, a handheld part, and a second connector. The handheld part is sleeved outside the liquid flow channel. A control unit and a visualization unit are provided on the liquid flow channel. The control unit includes a sealing blocking member, a control channel, an elastic member, and a button. The control unit controls the control channel to communicate with the liquid flow channel. The visualization unit includes a flow guide and an impeller. Fluid enters the visualization unit through the flow guide, and the impeller rotates as the fluid enters.

2. The syringe assembly according to claim 1, characterized in that, The liquid flow channel is divided into a first flow channel, a second flow channel, and a third flow channel from far to near. The control unit is located between the first flow channel and the second flow channel, and the visualization unit is located between the second flow channel and the third flow channel.

3. The syringe assembly according to claim 1, characterized in that, The control unit further includes a limiting guide boss and a mounting groove, and the sealing blocking member is installed in the mounting groove; in addition, the control unit also includes a sealing ring and a retaining groove, and the sealing ring is disposed on the retaining groove.

4. The syringe assembly according to claim 1, characterized in that, The elastic element is a spring, which is located below the button. In its natural state, the control channel is not in contact with the liquid flow channel. When the button is pressed, the elastic element is compressed, and the control channel moves toward the liquid flow channel.

5. The syringe assembly according to claim 1, characterized in that, In its natural state, the elastic element maintains a safe distance between the control unit and the liquid flow channel, and the stroke of the elastic element is greater than this safe distance.

6. The syringe assembly according to claim 1, characterized in that, The flow guide includes a flow guide hole, a flow guide cavity, and a limiting groove. The limiting groove is fixedly connected to the liquid flow channel, and the fluid enters the flow guide cavity through the flow guide hole.

7. The syringe assembly according to claim 1, characterized in that, The impeller section includes a central shaft and several impellers, which are either straight or curved, and rotate in accordance with the fluid.

8. The syringe assembly according to claim 1, characterized in that, The visualization unit includes a transparent cover, which is concave and fixed to the surface of the handheld part.

9. The syringe assembly according to claim 1, characterized in that, The cross-sections at both ends of the handheld part are larger than the cross-section at the middle position; and the handheld part located between the control unit and the visualization unit is provided with a friction-enhancing structure.

10. The syringe assembly according to claim 1, characterized in that, The second connector includes an inner conical joint, and the first connector includes an outer conical joint and a locking cap. The first connector is connected to the injection needle, and the fluid passes through the second connector to the injection needle.

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