Special injector smearing head for paste mixture

Abstract

The utility model relates to an injector smearing head special for paste mixture, which relates to the field of medical instruments and comprises a shell, a plurality of blocking blocks, an outlet and a connector, the length of the shell is the same as the width of an inner cavity of a mold, and the blocking blocks are arranged in the inner cavity of the shell at intervals in a left-right staggered mode. The length of the barrier block extending into the shell inner cavity is greater than half of the width of the shell inner cavity; the outlet is of a square strip-shaped structure, arranged at the bottom of the shell and communicated with the inner cavity of the shell; the length direction of the outlet is the width direction of the inner cavity of the mold; the cylindrical connector is fixedly connected to the top of the shell and communicated with an inner cavity of the shell, the connector is connected with the injector in an inserted or threaded mode, and the pasty mixture can be evenly injected into the square mold so that defect bubbles can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a syringe applicator for paste-like mixtures. Background Technology

[0002] During production, a paste-like mixture needs to be filled into a square mold using syringes or similar methods for freeze-drying. Because the syringe nozzle is smaller than the mold's inner cavity, workers inject the mixture in small, continuous strokes until the mold is full. However, this method increases the internal texture of the freeze-dried product and creates air bubbles. These textures are likely to crack during later processing, leading to product defects. Furthermore, the presence of noticeable air bubbles necessitates filling them, significantly reducing work efficiency.

[0003] Therefore, to address the above shortcomings, there is a need to provide a dedicated syringe applicator for paste-like mixtures. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] The technical problem to be solved by this invention is to address the issue of textures and air bubbles that occur when injecting paste-like mixtures using only a syringe.

[0006] (II) Technical Solution

[0007] To solve the above-mentioned technical problems, this utility model provides a special syringe applicator for paste mixtures, including a shell, barrier blocks, an outlet, and a connector. The length of the shell is the same as the width of the mold cavity. Several barrier blocks are spaced apart and staggered left and right in the inner cavity of the shell, and the length of the barrier blocks extending into the inner cavity of the shell is greater than half the width of the inner cavity of the shell. The outlet is a square strip structure and is located at the bottom of the shell, communicating with the inner cavity of the shell. The length direction of the outlet is the width direction of the inner cavity of the mold. The columnar connector is fixed to the top of the shell and communicates with the inner cavity of the shell. The connector is plugged into or threaded into the syringe.

[0008] As a further explanation of this utility model, preferably, the outer shell width is smaller than the mold length so that the outer shell can move along the mold length direction, and the outlet width is smaller than the outer shell width.

[0009] As a further explanation of this utility model, preferably, the outlet is located on one side of the bottom of the outer casing, and the connector is located in the middle of the top of the outer casing.

[0010] As a further explanation of this utility model, preferably, the barrier block has a triangular prism structure, the length direction of the barrier block is the same as the length direction of the outer shell, and the sharp part of the barrier block extends into the inner cavity of the outer shell.

[0011] As a further explanation of this utility model, preferably, an inclined collecting channel is provided at the bottom of the inner cavity of the outer shell, and the inclined direction of the collecting channel is towards the outlet.

[0012] As a further explanation of this utility model, preferably, a strip-shaped squeegee protrudes from the bottom of the outer shell on the outlet side. The length direction of the squeegee is the same as the length direction of the outer shell, and the length of the squeegee protruding from the outer shell is less than the width of the outlet.

[0013] As a further explanation of this utility model, preferably, an inclined pressing surface is provided on the outer wall surface of the outer shell near the collecting channel, and the inclination angle of the pressing surface is greater than the inclination angle of the collecting channel.

[0014] As a further explanation of this utility model, preferably, the protruding end of the squeegee is not in the same plane as the pressing surface.

[0015] (III) Beneficial Effects

[0016] The above-mentioned technical solution of this utility model has the following advantages:

[0017] This invention designs a coating head that is mounted on a syringe, allowing the syringe to output a rectangular strip-shaped structure instead of a cylindrical one. The rectangular strip-shaped structure is similar in width to the mold, and the paste-like mixture from the extrusion outlet can be appropriately squeezed to fill the mold. Due to the change in injection structure and method, not only are internal textures eliminated, but air bubbles are also expelled, improving work efficiency. Attached Figure Description

[0018] Figure 1 This is an assembly rendering of the present invention;

[0019] Figure 2 This is a partial sectional view of the present invention;

[0020] Figure 3 This is a side sectional view of the present invention.

[0021] In the diagram: 1. Outer shell; 2. Barrier block; 3. Outlet; 4. Connector; 5. Converging channel; 6. Scraper; 7. Pressing surface; 8. Mold; 9. Injector. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] A special syringe applicator for paste-like mixtures, combined with Figure 1 , Figure 2 The device includes a housing 1, barrier blocks 2, an outlet 3, and a connector 4. The length of the housing 1 is the same as the width of the inner cavity of the mold 8. Several barrier blocks 2 are spaced apart and staggered left and right in the inner cavity of the housing, preferably two. The length of the barrier blocks 2 extending into the inner cavity of the housing 1 is greater than half the width of the inner cavity of the housing 1. The outlet 3 is a square strip structure and is located at the bottom of the housing 1, communicating with the inner cavity of the housing 1. The columnar connector 4 is fixed to the top of the housing 1 and communicates with the inner cavity of the housing 1. The connector 4 is plugged into or threadedly connected to the syringe 9. The number of syringes 9 installed can be adjusted according to the length of the connector 4 and the size of the syringes 9. That is, one or more syringes 9 can be installed at intervals along the length of the connector 4, with a maximum of three, so that the inner cavity of the housing 1 can be filled more quickly.

[0024] Combination Figure 2 , Figure 3 The outer shell 1 is a square hollow shell. The width of the outer shell 1 is smaller than the length of the mold 8 so that the outer shell 1 can move along the length direction of the mold. This transforms the traditional alternating reciprocating application into unidirectional large-area application, eliminating alternating patterns and fundamentally solving the problem of pattern formation. The barrier block 2 is a triangular prism structure. The length direction of the barrier block 2 is the same as the length direction of the outer shell 1. The sharp part of the barrier block 2 extends into the inner cavity of the outer shell 1. To avoid excessive residue of the paste mixture due to excessive internal space of the outer shell 1, the outer shell 1 is preferably designed as a long strip with narrow sides. The number of barrier blocks 2 is also set to two. On the one hand, the barrier blocks 2 block the paste mixture injected horizontally by the syringe 9, causing the mixture to expand to both ends of the length direction of the outer shell 1, achieving an automatic expansion range. On the other hand, it can reduce the size of the outer shell 1, avoiding excessive residue of paste mixture in the outer shell 1 after application, thus preventing waste.

[0025] Combination Figure 2 , Figure 3 The length of outlet 3 is along the width of the mold cavity, preferably 20-25 mm, to match the mold size. The width of outlet 3 is less than the width of outer shell 1, preferably 4-5 mm. Designing outlet 3 as a flat opening similar to the mold width allows the paste mixture to be distributed along the mold width as much as possible when flowing out of outlet 3 under syringe pressure, increasing the area of ​​the mold occupied by the paste mixture in a single application and eliminating the need for multiple applications using only a syringe. Outlet 3 is located on one side of the bottom of outer shell 1, and connector 4 is located at the middle of the top of outer shell 1. Connector 4 is preferably a tubular column with internal threads, allowing for a tighter connection with syringe 9 and preventing the outer shell 1 and syringe 9 from separating first when the paste mixture is squeezed.

[0026] Combination Figure 2 , Figure 3 The bottom of the inner cavity of the outer shell 1 has an inclined collecting channel 5, which is inclined towards the outlet 3. The collecting channel 5 allows the paste mixture inside the outer shell 1 to be gathered at the outlet 3, facilitating its outflow and further reducing the internal space of the outer shell 1, thus avoiding waste. A strip-shaped squeegee 6 protrudes from the bottom of the outer shell 1 on one side of the outlet 3. The length of the squeegee 6 is the same as the length of the outer shell 1, and the length of the squeegee 6 protruding from the outer shell 1 is less than the width of the outlet 3. To improve application comfort, the syringe 1 and the outer shell 1 should be appropriately tilted to reduce the probability of the paste mixture adhering to the outlet 3 and falling into the mold, thus preventing new parallel lines. Simultaneously, after the paste mixture is extruded from the outlet 3, the squeegee 6 can be used to push the paste mixture that accumulates more in the middle towards both sides of the mold during the movement of the outer shell 1, resulting in a more even distribution of the paste mixture applied within the mold 8. Furthermore, during the later cleaning of the outer shell 1, the wiping plate 6 can block the water flow into the outlet 3 to prevent water splashing and poor cleaning effect; since the paste mixture used is soluble in water, water can be injected from the outlet 3 and the water can flow out from the connector 4 to complete the cleaning without complicated procedures such as stirring, making cleaning convenient.

[0027] Combination Figure 2 , Figure 3 An inclined pressing surface 7 is provided on the outer wall of the outer casing 1 near the collecting channel 5. The inclination angle of the pressing surface 7 is greater than that of the collecting channel 5. Furthermore, the protruding end of the squeegee 6 is not in the same plane as the pressing surface 7. The pressing surface 7 serves two purposes: firstly, it prevents interference between the outer casing 1 and the mold 8 when the casing 1 is tilted; secondly, it allows the paste mixture to be compacted and flattened after application, squeezing out internal air bubbles. Additionally, the design of the pressing surface 7 allows the worker to smoothly hold the syringe 9 and align the pressing surface 7 with the end face of the mold 8, preventing any reverse joint operation during flattening and improving user comfort.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A syringe applicator for applying paste-like mixtures, characterized in that: It includes a shell (1), a barrier block (2), an outlet (3), and a connector (4). The length of the shell (1) is the same as the width of the inner cavity of the mold (8). Several barrier blocks (2) are spaced apart and staggered left and right in the inner cavity of the shell (1). The length of the barrier block (2) extending into the inner cavity of the shell (1) is greater than half the width of the inner cavity of the shell (1). The outlet (3) is a square strip structure and is located at the bottom of the shell (1) and communicates with the inner cavity of the shell (1). The length direction of the outlet (3) is the width direction of the inner cavity of the mold (8). The columnar connector (4) is fixed to the top of the shell (1) and communicates with the inner cavity of the shell (1). The connector (4) is plugged into or threaded to the syringe (9).

2. The syringe applicator for paste-like mixtures according to claim 1, characterized in that: The width of the outer shell (1) is less than the length of the mold (8) so that the outer shell (1) can move along the length direction of the mold (8), and the width of the outlet (3) is less than the width of the outer shell (1).

3. The syringe applicator for paste-like mixtures according to claim 2, characterized in that: The outlet (3) is located on the bottom side of the outer casing (1), and the connector (4) is located at the top center of the outer casing (1).

4. The syringe applicator for paste mixtures according to claim 3, characterized in that: The barrier block (2) has a triangular prism structure. The length direction of the barrier block (2) is the same as the length direction of the outer shell (1). The sharp part of the barrier block (2) extends into the inner cavity of the outer shell (1).

5. The syringe applicator for paste mixtures according to claim 4, characterized in that: An inclined collecting channel (5) is provided at the bottom of the inner cavity of the outer shell (1), and the inclined direction of the collecting channel (5) is towards the outlet (3).

6. The syringe applicator for paste mixtures according to claim 5, characterized in that: A strip-shaped squeegee (6) protrudes from the bottom of the outer shell (1) on one side of the outlet (3). The length direction of the squeegee (6) is the same as the length direction of the outer shell (1), and the length of the squeegee (6) protruding from the outer shell (1) is less than the width of the outlet (3).

7. The syringe applicator for paste mixtures according to claim 6, characterized in that: An inclined pressure surface (7) is provided on the outer wall surface of the outer shell (1) near the confluence channel (5), and the inclination angle of the pressure surface (7) is greater than that of the confluence channel (5).

8. The syringe applicator for paste-like mixtures according to claim 7, characterized in that: The extended end of the trowel (6) is not in the same plane as the pressing surface (7).

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