Injection tool for injector

Abstract

The invention discloses an injection tool for an injector, and relates to the field of medical instruments. The injection tool comprises a containing part used for containing a syringe, and the syringe comprises a syringe outer barrel with an outer barrel push handle and a push rod; the containing piece is of an integrated structure with one side open, a transverse groove used for containing an outer barrel push handle of an injector and a vertical groove used for containing a push rod of the injector are formed in the containing piece, and a threaded hole is formed in the position, corresponding to the vertical groove, of the containing piece. The driving rod comprises a threaded rod and a tail end handle, the threaded rod is in threaded fit with the threaded hole of the containing part, and the tail end handle is used for driving the threaded rod to rotate. Through the integrated containing piece with the threads and the specially-designed driving rod handle, assembly is simplified, alignment is not needed, rapid and continuous rotation is facilitated, high rotating force is applied, and the injection efficiency and operation convenience are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to an injection tool for use with a syringe. Background Art

[0002] Currently, injection tools are widely used in fields such as medicine and laboratories. Especially when injecting high-viscosity materials, they can significantly reduce the injection difficulty and improve the accuracy and controllability of injection. Manual injection tools are favored due to their good speed controllability and safety.

[0003] In the prior art, for example, US Patent Application Publication No. USA20130245492 discloses an injection device that uses a non-threaded syringe receptacle in combination with a threaded insert, and its rotating rod has a large and round short handle. This design has the following disadvantages:

[0004] 1) The receptacle itself has no threads and the structure is not integrated, increasing the number of components;

[0005] 2) An additional threaded accessory is required, increasing the complexity of assembly;

[0006] 3) There is no rotation indication structure on the handle, making it inconvenient to precisely control the amount of rotation;

[0007] 4) Its rotating handle is large and the design is not conducive to rapid continuous rotation, which may result in a low rotation speed.

[0008] In addition, injection tools in other prior arts may also have one or more problems, such as: many assembly steps and complex accessories; precise alignment is required during assembly, making the operation inconvenient; lack of a rotation-in indication, making it difficult to judge the degree of advancement; it is difficult to achieve rapid and continuous rotational advancement; the feel is not good or it is difficult to exert force when applying a high rotational force; the rotating rod may break or undergo permanent deformation when subjected to a large force, etc. Summary of the Invention

[0009] The main objective of the present invention is to provide an injection tool for use with a syringe to solve one or more problems existing in injection tools in the prior art, such as multi-step and multi-component assembly, difficult alignment, lack of a rotation-in indication, difficult rapid and continuous rotational advancement, difficult application of a high rotational force, and easy breakage and deformation of the rotating rod.

[0010] To achieve the above objective, the present invention provides the following technical solution:

[0011] An injection tool for use with a syringe, comprising:

[0012] A receiving member for receiving a syringe, the syringe including a syringe barrel with an outer barrel push handle and a push rod; the receiving member is of an integral structure, on which there is provided a push rod receiving space, the push rod receiving space including a transverse groove for clamping the outer barrel push handle and a vertical groove for receiving the push rod; there is also provided a threaded hole on the receiving member that communicates with the vertical groove and is coaxially arranged.

[0013] A drive rod, including a threaded rod and a tail end handle; the threaded rod is in threaded cooperation with the threaded hole of the receiving member, and the end of the threaded rod is used to abut against and push the push rod; the tail end handle is connected to the end of the threaded rod away from the push rod for driving the threaded rod to rotate.

[0014] Preferably, at least one radially extending convex wing is provided on the tail end handle. The convex wing can not only be used as an indication of the rotation angle, but also assist the operator in applying a greater rotational torque, facilitating the pushing of high-viscosity materials.

[0015] Preferably, the outer surface of the tail end handle is provided with anti-slip stripes, such as vertical stripes, to increase the friction during gripping, prevent slipping, and make the operation more stable and reliable.

[0016] Preferably, the tail end handle is a round handle, and this design is conducive to achieving continuous and smooth rotational operation.

[0017] Preferably, a convex platform is circumferentially provided on the outer periphery of the receiving member near the end where the threaded hole is opened, and the threaded hole penetrates through the convex platform and extends into the interior of the receiving member to communicate with the vertical groove. This convex platform structure can, on the one hand, increase the material thickness in the threaded hole area, thereby enhancing the strength and durability of the thread engagement, and on the other hand, through local strengthening, the structure of other parts of the receiving member can be optimized to reduce the overall weight while ensuring the structural strength.

[0018] Preferably, the vertical groove has a second end face facing the threaded hole, and the threaded hole has an upper surface facing the vertical groove, and the distance between the second end face and the upper surface of the threaded hole is zero or partially overlaps. This means that the end of the syringe push rod can be directly or very closely pushed by the end of the threaded rod of the drive rod, and the force is transmitted directly.

[0019] As another implementation manner, a preset distance L is provided between the second end face of the vertical groove and the upper surface of the threaded hole. The setting of this distance L can be adapted according to the specific syringe model or the length of the push rod after processing.

[0020] Preferably, the tail end handle and the threaded rod are of an integrally formed structure, with a simple structure, reliable connection, and high strength.

[0021] Preferably, the receiving member is of an integrally formed structure that is open on one side.

[0022] As another embodiment, a threaded hole is provided on the tail end handle, and one end of the threaded rod is threadedly connected to the threaded hole of the handle. This split design facilitates the replacement of handles of different shapes or sizes, or the replacement of threaded rods with different pitches and lengths, increasing versatility.

[0023] Preferably, the drive rod is made of a high-strength metal material (such as high-strength steel) to ensure that the drive rod will not break or undergo permanent deformation when a large thrust is applied, ensuring the durability and safety of the injection tool.

[0024] The beneficial effects of the present invention are as follows:

[0025] The integrated threaded receiving member design simplifies the structure. The syringe can slide into the push rod receiving space from one side and be positioned by the transverse groove and the vertical groove, without additional accessories, reducing the assembly steps and basically eliminating the need for complex alignment operations, making it convenient to use.

[0026] The tail end handle (especially the round long handle design) facilitates the operator to perform quick and continuous rotation, improving the injection efficiency, especially suitable for scenarios requiring a long pushing distance or rapid advancement.

[0027] The convex wing design on the tail end handle can not only clearly indicate the rotation process and angle, facilitating precise control of the injection volume, but also serve as a lever point when needed to assist in applying a higher rotational force to overcome the resistance of high-viscosity materials.

[0028] The drive rod is made of a high-strength material (such as a steel threaded drive rod), effectively avoiding the risk of breakage or permanent deformation when a large thrust is applied, improving the reliability and service life of the tool.

[0029] Through the above structural features, one or more problems such as assembly, alignment, indication, rotational advancement, force application, and structural strength existing in the prior art are comprehensively solved.

[0030] Other features and advantages of the present invention will become clear through the following detailed description of the exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings incorporated in and constituting a part of this specification illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0032] Figure 1 is a schematic view of the cut-off part of the syringe in the embodiment of the present invention.

[0033] Figure 2 is a schematic structural view of the receiving member in the embodiment of the present invention.

[0034] Figure 3 It is a schematic structural diagram of the drive rod in an embodiment of the present invention.

[0035] Figure 4 It is a schematic structural diagram of the end handle of the drive rod in an embodiment of the present invention.

[0036] Figure 5 It is a schematic installation diagram of the injection tool in an embodiment of the present invention (showing the case where the distance between the vertical groove and the threaded hole is 0).

[0037] Figure 6 It is a schematic installation diagram of the injection tool in an embodiment of the present invention (illustrating the case where the distance between the second end face of the vertical groove and the upper surface of the threaded hole is L).

[0038] Figure 7 It is a schematic structural diagram of the accommodating member and the drive rod in an embodiment of the present invention (showing the case where the distance between the vertical groove and the threaded hole is 0).

[0039] Figure 8 It is a schematic structural diagram of the accommodating member and the drive rod in an embodiment of the present invention (illustrating the case where the distance between the second end face of the vertical groove and the upper surface of the threaded hole is L).

[0040] Figure 9 It is a schematic diagram of a syringe with a round head push handle in an embodiment of the present invention.

[0041] Explanation of reference numerals:

[0042] 1 - syringe, 11 - outer cylinder, 111 - outer cylinder push handle, 12 - push rod, 13 - round head push handle;

[0043] 2 - accommodating member, 21 - push rod accommodating space, 211 - transverse groove, 212 - vertical groove, 213 - first end face, 214 - second end face, 22 - threaded hole, 221 - upper surface of the threaded hole, 23 - convex platform, 24 - end face;

[0044] 3 - drive rod, 31 - end handle, 311 - convex wing, 312 - stripe, 313 - handle threaded hole, 32 - threaded rod. Detailed implementation manners

[0045] Now, various exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.

[0046] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way a limitation on the present invention or its application or use.

[0047] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification.

[0048] In all examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments may have different values.

[0049] It should be noted that like reference numerals and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

[0050] Please refer to Figures 1 to 6 , the present invention provides an injection tool for use with a syringe, aiming to solve the problems of complex assembly, difficult alignment, lack of precession indication, difficulty in rapid continuous rotation and advancement, and difficulty in applying high rotational force of existing injection tools, as well as easy fracture and deformation of the drive rod. The injection tool mainly includes a syringe 1, a receiving member 2, and a drive rod 3.

[0051] As Figure 1 and Figure 9 shown, the syringe 1 is a conventional medical or laboratory syringe, including an outer barrel 11 and a push rod 12 disposed within the outer barrel 11. The tail of the outer barrel 11 usually has a flange structure for easy holding, which is referred to as the outer barrel push handle 111 in the present invention. The tail of the push rod 12 usually has a round head push handle 13, and before using the injection tool of the present invention, this round head push handle 13 usually needs to be cut off or removed so that the end of the push rod 12 becomes a relatively flat end surface to facilitate being pushed by the drive rod 3.

[0052] As Figure 2 , Figure 5 and Figure 7 shown, the receiving member 2 is used to receive and fix the syringe 1. The receiving member 2 is preferably a cylindrical structure and is integrally designed. Specifically, as Figure 2As shown, the accommodating member (2) is a one-piece molded structure that is open on one side. This structure is convenient for processing and facilitating the accommodation of the syringe 1. A push rod accommodating space 21 is provided thereon, and this space is used to accommodate the push rod 12 part and the positioning outer cylinder 11 of the syringe 1. Specifically, the push rod accommodating space 21 includes a horizontally extending transverse groove 211 and a vertically extending vertical groove 212. The transverse groove 211 is used to snap into and accommodate the outer cylinder push handle 111 of the syringe 1, thereby restricting the axial movement of the syringe outer cylinder 11. The vertical groove 212 is used to accommodate the push rod 12 of the syringe 1. When the syringe 1 is loaded into the accommodating member 2, the outer cylinder push handle 111 is placed in the transverse groove 211, and the push rod 12 is located in the vertical groove 212. In the cylindrical structure of the accommodating member 2, a threaded hole 22 is provided at a position coaxial with the vertical groove 212. The threaded hole 22 extends inward from one end of the accommodating member 2 (such as Figure 2 the upper end in

[0053] ), and communicates with the internal space of the vertical groove 212. Figure 2 To enhance the structural strength at the threaded hole 22 and possibly reduce the overall weight of the accommodating member 2 (by optimizing the design of other parts), a boss 23 can be formed on the outer periphery of one end of the accommodating member 2 where the threaded hole 22 is provided, as

[0054] shown. The boss 23 can be cylindrical or other shapes, and the threaded hole 22 penetrates through this boss 23. Figure 7 The vertical groove 212 has a first end face 213 (usually flush with or close to a certain outer surface of the accommodating member 2, such as the upper surface) and a second end face 214 (facing the threaded hole 22). The threaded hole 22 has a threaded hole upper surface 221 where the thread starts to form (facing the vertical groove 212). In one embodiment, as Figure 8 implied by the illustration shown, the distance between the second end face 214 of the vertical groove 212 and the threaded hole upper surface 221 can be designed to be zero, that is, the bottom of the vertical groove 212 is directly connected to the starting end of the threaded hole 22, or even partially overlaps, to ensure that the threaded rod 32 of the driving rod 3 can directly contact the end of the push rod 12. In another embodiment, as

[0055] shown, there can be a preset distance L between the second end face 214 of the vertical groove 212 and the threaded hole upper surface 221. This distance L can be determined according to the specific length of the syringe push rod 12 after trimming or other design requirements.

[0055] As Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, the driving rod 3 includes a tail handle 31 and a threaded rod 32. The outer surface of the threaded rod 32 is processed with threads that match the threaded hole 22 on the receiving member 2. One end (front end) of the threaded rod 32 is used to insert into the threaded hole 22 and finally abut and push the push rod 12 of the syringe 1. The tail handle 31 is connected to the other end (rear end) of the threaded rod 32 for the operator to hold and rotate.

[0056] In order to facilitate operation and force application, the tail handle 31 is preferably designed to be circular (for continuous rotation), and one or more radially extending convex wings 311 can be provided thereon. These convex wings 311 can not only serve as a visual indication of the rotation angle to help the operator accurately control the amount of propulsion, but also provide an additional lever arm when a larger thrust is required to facilitate the application of a larger rotational torque. In addition, the outer surface of the tail handle 31 can be provided with vertical stripes or other forms of anti-slip stripes 312 to increase the friction when holding, prevent hand slippage, and ensure the stability and accuracy of the operation.

[0057] The tail handle 31 and the threaded rod 32 may be an integrally formed structure, such as Figure 3 As shown, this structure has good integrity and high strength. Alternatively, they can also be split structures, such as Figure 9 As shown, at this time, a handle threaded hole 313 can be set on the tail end handle 31, and a corresponding matching thread can be processed on one end of the threaded rod 32, and the two can be fixedly connected together by screwing. This split structure is convenient for replacing different types of handles or threaded rods as needed. In order to ensure sufficient strength and durability, the drive rod 3, especially the threaded rod 32 part, is preferably made of high-strength metal material, such as high-strength steel, to prevent bending, breaking or thread damage when subjected to large axial force.

[0058] Working principle:

[0059] When in use, first remove the round push handle 13 (if any) at the rear end of the push rod 12 of the syringe 1. Then, slide the syringe 1 from one side (e.g., the open end) of the container 2 into the push rod accommodating space 21, so that the outer tube push handle 111 of the syringe outer tube 11 is embedded in the horizontal groove 211, and the push rod 12 is located in the vertical groove 212. At this time, the syringe 1 is reliably fixed in the container 2. Subsequently, the threaded rod 32 of the drive rod 3 is screwed into the threaded hole 22 of the container 2. When the tail end handle 31 is rotated, the threaded rod 32 moves axially due to the threaded fit with the threaded hole 22, and its front end pushes the push rod 12 of the syringe 1 forward, thereby squeezing the material (such as high viscosity medicine, colloid, etc.) in the syringe outer tube 11 through the injection needle (not shown). The tail end handle 31 with the convex wing 311 and the anti-slip stripe 312 allows the operator to easily apply sufficient rotational force and accurately control the injection speed and injection volume.

[0060] Through the above design, the present invention achieves the objectives of simplified assembly, easy operation, precise control, high thrust application, and strong and durable structure of the injection tool.

[0061] Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. An injection tool for use with a syringe, characterized in that, Comprising: A receiving member (2) for receiving a syringe (1), the syringe (1) including a syringe barrel (11) with an outer barrel push handle (111) and a push rod (12); the receiving member (2) is of an integral structure, on which there is provided a push rod receiving space (21), the push rod receiving space (21) including a transverse groove (211) for clamping the outer barrel push handle (111) and a vertical groove (212) for receiving the push rod (12); on the receiving member (2) there is also provided a threaded hole (22) which communicates with the vertical groove (212) and is coaxially arranged; a driving rod (3), including a threaded rod (32) and a tail end handle (31); the threaded rod (32) is in threaded cooperation with the threaded hole (22) of the receiving member (2), and the end of the threaded rod (32) is used to abut against and push the push rod (12); the tail end handle (31) is connected to the end of the threaded rod (32) away from the push rod (12) for driving the threaded rod (32) to rotate.

2. The injection tool according to claim 1, characterized in that, On the tail end handle (31) there is provided at least one radially extending convex wing (311).

3. The injection tool according to claim 2, characterized in that, The convex wing (311) is used for indicating the rotation angle and assisting in applying the rotational force.

4. The injection tool according to claim 1 or 2, characterized in that, The outer surface of the tail end handle (31) is provided with anti-slip stripes (312).

5. The injection tool according to claim 1, characterized in that, The tail end handle (31) is a circular handle.

6. The injection tool according to claim 1, characterized in that, On the outer circumference of the receiving member (2) near the end where the threaded hole (22) is opened, there is provided a convex platform (23), and the threaded hole (22) penetrates through the convex platform (23) and extends into the interior of the receiving member (2) to communicate with the vertical groove (212).

7. The injection tool according to claim 1, wherein The vertical groove (212) has a second end face (214) facing the threaded hole (22), and the threaded hole (22) has an upper surface (221) facing the vertical groove (212), and the distance between the second end face (214) and the upper surface (221) of the threaded hole is zero or partially overlaps.

8. The injection tool according to claim 1, characterized in that, The vertical groove (212) has a second end face (214) facing the threaded hole (22), and the threaded hole (22) has an upper surface (221) facing the vertical groove (212), and there is a preset distance L between the second end face (214) and the upper surface (221) of the threaded hole.

9. The injection tool according to claim 1, characterized in that The receiving member (2) is a one-piece molded structure that is open on one side.

10. The injection tool according to claim 1, characterized in that, On the tail end handle (31) there is provided a handle threaded hole (313), and one end of the threaded rod (32) is threadedly connected to the handle threaded hole (313).

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