Booster for a syringe and syringe

Abstract

The booster for the syringe comprises a main body, a cylinder groove for accommodating a syringe cylinder, a flange groove for accommodating a syringe flange, a rod groove for accommodating a piston rod, a clamping groove with a side opening, and a mounting groove in communication with the clamping groove and matched with the piston rod in shape; the opening width at the communication part of the clamping groove and the mounting groove is smaller than the maximum outer diameter of the piston rod, and the walls of the clamping groove and the mounting groove adjacent to the communication part are elastic, forming clamping groove elastic arms and mounting groove elastic arms. The elastic structure is arranged to facilitate the elastic locking of the clamping of the piston rod, so that the piston rod is not only convenient to install but also effectively positioned after installation without shaking.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a syringe booster and syringe. Background Technology

[0002] In recent years, cosmetic dermal filler injections have become increasingly popular. When using a syringe for dermal filler injections, the syringe must be operated with one hand. First, the needle tip is inserted into the skin, and repeated aspiration is performed to check for blood vessels. Only after confirming that no blood vessels have been punctured can the filler be injected. However, in cases with many procedures, this repeated pulling and pulling can become a burden for the operator, easily causing hand fatigue and affecting the surgical outcome. To address this issue, the syringe flange is equipped with a plunger for gripping, assisting the fingers in pulling the plunger more easily during injection.

[0003] Current boosters are categorized into two types based on the piston rod installation method: center-through type and side-clamp type. Center-through type: A through hole is made in the center of the upper surface of the piston rod for the piston rod to pass through. The piston rod is first passed through the through hole, and then the piston is installed at the end of the piston rod, which is then placed inside the syringe barrel. Although this method effectively positions the piston rod and prevents it from wobbling, the installation process is cumbersome and inconvenient to use. Side-clamp type: The piston rod, piston, and barrel are assembled together, and then the assembled assembly is clamped into the booster from one side. To facilitate clamping, the piston rod groove in this type is often of uniform width from the outside to the inside. Once the piston rod is in place, it is not effectively positioned, making it prone to wobbling, and it may even slip out of the piston rod groove and fall off, thus its performance is also poor. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this utility model proposes a booster and syringe for a syringe. The piston rod groove is composed of a mounting groove that can effectively position the piston rod and a snap-fit ​​groove that is easy to snap into. This makes it easy to snap into while ensuring that the piston rod is effectively positioned after snapping in, making it less prone to shaking and preventing it from slipping out of the groove.

[0005] The technical solution adopted in this utility model is:

[0006] A syringe plunger includes a main body with a cylinder groove for accommodating a syringe barrel, a flange groove for accommodating a syringe barrel flange, and a rod groove for a piston rod to pass through. The rod groove includes a side-opening retaining groove and a mounting groove communicating with the retaining groove. The mounting groove matches the shape of the piston rod. The opening width at the connection between the retaining groove and the mounting groove is smaller than the maximum outer diameter of the piston rod, and the retaining groove wall and the mounting groove wall adjacent to the connection are elastic, forming a retaining groove spring arm and a mounting groove spring arm. This invention, by setting an elastic structure composed of a retaining groove spring arm and a mounting groove spring arm, facilitates elastic locking of the piston rod after it is engaged, thus making the piston rod not only easy to install but also effectively positioned and preventing wobbling after installation.

[0007] Furthermore, the upper surface of the main body has thinning holes on both sides of the rod groove to form a retaining spring arm and a mounting spring arm. This structure is easy to process; it can be integrally injection molded to form an elastic structure, so that the piston rod can be inserted from the side, and the piston rod is effectively positioned after being inserted without shaking.

[0008] Furthermore, both the retaining spring arm and the mounting spring arm are formed by a thinning hole, with a support rib formed between the two thinning holes. One end of the support rib is connected to the connection point between the retaining spring arm and the mounting spring arm. The support rib further ensures that the piston rod inside the mounting groove will not fall out of the groove.

[0009] Furthermore, the support rib is composed of a support section and a deformable section arranged at an angle. The end of the support section furthest from the deformable section connects to the junction of the slot spring arm and the mounting slot spring arm, and the extension line of the support section passes through the center of the mounting slot. The deformable section provides deformation capability, making the slot spring arm and the mounting slot spring arm more elastic, reducing the resistance to side-push insertion, and allowing the piston rod to be easily inserted from the side of the booster. The support section ensures that the piston rod will not fall out of the mounting slot. The combination of the support section and the deformable section makes the piston rod not only easy to install but also effectively positioned and prevents wobbling after installation.

[0010] Furthermore, the thinning hole is filled with a block of elastic material. This increases the strength of the booster's upper surface, improves its service life, and ensures the functionality of the slot spring arm and mounting slot spring arm, facilitating the piston rod's insertion from the side.

[0011] Furthermore, the upper surface of the main body is covered with an elastic material layer, which is integrally structured with the elastic material block. In this way, the elastic material layer covers the thinning holes, making the upper surface of the main body simpler and improving the visual effect.

[0012] Furthermore, the elastic material layer is only located around the periphery of the piston rod. This reduces the distribution area of ​​the elastic material layer, thereby lowering costs and allowing the thinning holes to be covered.

[0013] Furthermore, the slot is wider at the outside and narrower at the inside, gradually narrowing from the outside to the inside. This allows the piston rod to be easily engaged from the side and prevents it from easily falling out.

[0014] This utility model also provides a syringe, including the aforementioned booster, syringe, and piston rod, wherein the syringe is snapped into the booster, and one end of the piston rod passes through the booster and is slidably connected to the syringe.

[0015] Furthermore, both the syringe and the piston rod are side-mounted onto the booster.

[0016] This utility model has at least the following beneficial effects:

[0017] 1) The piston rod can be snapped into the side of the booster for easy installation.

[0018] 2) Once the piston rod is engaged in the booster and positioned in the mounting slot, it will not wobble and is not easily dislodged, making it convenient to use.

[0019] 3) The booster can be injection molded in one piece, which is convenient for processing, low in cost, and has good performance, which is conducive to its promotion. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this utility model.

[0021] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of this utility model.

[0022] Figure 3 This is a structural schematic diagram of Embodiment 3 of this utility model.

[0023] Figure 4 This is a structural schematic diagram of Embodiment 4 of this utility model.

[0024] Figure 5 This is a schematic diagram of the structure of the integrally molded elastic material of Embodiment 4 of this utility model.

[0025] Figure 6 This is a structural schematic diagram of Embodiment 5 of this utility model.

[0026] Figure 7 This is a structural schematic diagram of Embodiment 6 of this utility model.

[0027] Figure 8 This is a structural schematic diagram of Embodiment 7 of this utility model.

[0028] In the diagram: 1. Main body; 2. Cylinder groove; 3. Flange groove; 4. Rod groove; 41. Mounting groove; 42. Slot; 5. Thinning hole; 6. Mounting groove spring arm; 7. Slot spring arm; 8. Support rib; 81. Support section; 82. Deformation section; 9. Elastic material block; 10. Elastic material layer; 20. Injection cylinder; 30. Flange; 40. Piston rod. Detailed Implementation

[0029] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0030] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives of this utility model, should still fall within the scope of the technical content disclosed in this utility model. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of this utility model.

[0031] Example 1

[0032] See Figure 1 This embodiment provides a booster for a syringe, including a main body 1, which has a cylinder groove 2 for accommodating a syringe barrel 20, a flange groove 3 for accommodating a syringe barrel flange 30, and a rod groove 4 for a piston rod 40 to pass through.

[0033] The rod groove 4 includes a side-opening slot 42 and a mounting groove 41 communicating with the slot. The mounting groove 41 matches the shape of the piston rod 40 to effectively surround the piston rod 40 from the outside, making it less prone to shaking. The slot 42 is wider at the outside and narrower at the inside, and gradually narrows from the outside to the inside, so that the piston rod 40 can be easily inserted from the side, and once inserted, it is not easy to fall out.

[0034] The opening width at the junction of the slot 42 and the mounting groove 41 is smaller than the maximum outer diameter of the piston rod 40, so that once the piston rod 40 is engaged, it is not easy for it to wobble or fall out. The slot wall and the mounting groove wall adjacent to the junction are elastic, forming the slot spring arm 7 and the mounting groove spring arm 6. When the opening width at the junction is smaller than the maximum outer diameter of the piston rod 40, the elastic slot spring arm 7 and the mounting groove spring arm 6 also ensure that the piston rod 40 can slide from the opening at the junction into the mounting groove 41.

[0035] Both the retaining arm 7 and the mounting arm 6 are formed by a thinning hole 5, and a support rib 8 is formed between the two thinning holes 5. One end of the support rib 8 is connected to the connection between the retaining arm 7 and the mounting arm 6, and the extension line of the support rib 8 passes through the center of the mounting groove 41. The support rib 8 is located at the point of maximum force on the rod groove wall caused by the outward movement of the piston rod 40, which can effectively prevent the piston rod 40 from falling off the mounting groove 41.

[0036] In use, the piston rod 40 is first assembled with the injection cylinder 20, and then pressed and slid into the booster from the side through the slot 42. The matching of the mounting groove 41 and the piston rod 40 prevents the piston rod 40 from shaking. Moreover, the outer width and inner narrowness of the slot 42, as well as the elastic slot spring arm 7 and mounting groove spring arm 6, make the piston rod 40 smoothly inserted and well locked in the mounting groove 41.

[0037] This invention facilitates the insertion of the piston rod 40 while ensuring that the piston rod 40 is effectively positioned after insertion and is not easily shaken.

[0038] Example 2

[0039] See Figure 2 The difference between this embodiment and Embodiment 1 is that the support rib 8 is composed of a support section 81 and a deformable section 82 arranged at an angle together. The end of the support section 81 away from the deformable section 82 is connected to the connection between the slot spring arm 7 and the mounting slot spring arm 6, and the extension line of the support section 81 passes through the center of the mounting slot 41. The combination of the support section 81 and the deformable section 82 makes the piston rod 40 not only easy to install but also effectively positioned and prevents it from shaking after installation.

[0040] The remaining structures and functions can be described in Example 1.

[0041] Example 3

[0042] See Figure 3 The difference between this embodiment and Embodiment 1 is that the thinning hole 5 is filled with an elastic material block 9. The elastic material can be silicone or TPE, etc.

[0043] The remaining structures and functions can be described in Example 1.

[0044] Example 4

[0045] See Figure 4 , Figure 5 The difference between this embodiment and Embodiment 1 is that the upper surface of the main body 1 is covered with an elastic material layer 10, which is integrally formed with the elastic material block 9 through injection molding. The elastic material can be silicone or TPE, etc. In this embodiment, the elastic material layer 10, as shown in the figure, is only located around the periphery of the piston rod 40. Of course, the elastic material layer 10 can also cover the entire upper surface.

[0046] The remaining structures and functions can be described in Example 1.

[0047] Example 5

[0048] See Figure 6This embodiment provides a syringe, including the booster, syringe 30, and piston rod 40 described in Embodiment 2. The syringe 30 is snapped into the booster, and one end of the piston rod 40 passes through the booster and is slidably connected to the syringe 30. Both the syringe 30 and the piston rod 40 are side-mounted into the booster.

[0049] In this invention, the piston rod 40 and the injection cylinder 30 are inserted into the booster from the side. The injection cylinder 30 is inserted into the cylinder groove 2, and the flange of the injection cylinder 30 is inserted into the flange groove 3. The piston rod 40 is inserted into the mounting groove 41 after passing through the retaining groove 42. Since the retaining groove spring arm 7 and the mounting groove spring arm 6 are elastic, the piston rod 40 is locked, and the piston rod 40 will not shake during the injection process.

[0050] The remaining structures and functions can be referred to in Examples 1 and 2.

[0051] Example 6

[0052] See Figure 7 This embodiment provides a syringe, including the booster, syringe 30, and piston rod 40 described in Embodiment 3. Both the syringe 30 and piston rod 40 are side-mounted and clipped onto the booster described in Embodiment 3.

[0053] The remaining structures and functions can be referred to in Examples 1 and 3.

[0054] Example 7

[0055] See Figure 7 This embodiment provides a syringe, including the booster, syringe 30, and piston rod 40 described in embodiment 4. Both syringe 30 and piston rod 40 are side-mounted and clamped to the booster described in embodiment 3.

[0056] The remaining structures and functions can be referred to in Examples 1 and 4.

Claims

1. A syringe booster, comprising a body (1), wherein the body (1) has a barrel groove (2) for accommodating a syringe barrel (20), a flange groove (3) for accommodating a syringe barrel flange (30), and a rod groove (4) for a piston rod (40) to pass through, characterized in that: The rod groove (4) includes a side-opening slot (42) and a mounting groove (41) communicating with the slot. The mounting groove (41) matches the shape of the piston rod (40). The opening width at the connection between the slot (42) and the mounting groove (41) is smaller than the maximum outer diameter of the piston rod (40), and the slot wall and the mounting groove wall adjacent to the connection are elastic, forming a slot spring arm (7) and a mounting groove spring arm (6).

2. The syringe booster according to claim 1, characterized in that: The upper surface of the main body (1) has thinning holes (5) on both sides of the rod groove (4) to form a slot spring arm (7) and a mounting slot spring arm (6).

3. The syringe booster according to claim 2, characterized in that: Both the slot spring arm (7) and the mounting slot spring arm (6) are formed by a thinning hole (5), and a support rib (8) is formed between the two thinning holes (5). One end of the support rib (8) is connected to the connection between the slot spring arm (7) and the mounting slot spring arm (6).

4. A syringe booster according to claim 3, characterized in that: The support rib (8) is composed of a support section (81) and a deformation section (82) arranged at an angle. The end of the support section (81) away from the deformation section (82) is connected to the connection between the slot spring arm (7) and the mounting slot spring arm (6), and the extension line of the support section (81) passes through the center of the mounting slot (41).

5. A syringe booster according to claim 2, characterized in that: The thinning hole (5) is filled with an elastic material block (9).

6. A syringe booster according to claim 5, characterized in that: The upper surface of the main body (1) is covered with an elastic material layer (10), and it is an integral structure with the elastic material block (9).

7. A syringe booster according to claim 6, characterized in that: The elastic material layer (10) is located only around the periphery of the piston rod (40).

8. A syringe booster according to any one of claims 1 to 7, characterized in that: The slot (42) is wider on the outside and narrower on the inside, and gradually narrows from the outside to the inside.

9. A syringe, characterized in that: Includes the booster, syringe (20), and piston rod (40) as described in any one of claims 1 to 8, wherein the syringe (20) is snapped into the booster and one end of the piston rod (40) passes through the booster and is slidably connected to the syringe (20).

10. The syringe according to claim 9, characterized in that: Both the injection cylinder (20) and the piston rod (40) are side-mounted onto the booster.

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