Medication filling device for high viscosity medication syringes

Abstract

The utility model relates to a medicine filling tool for high viscosity medicine injector, including medicine filling seat, and medicine filling connector, medicine filling seat includes base, sliding block, tail board, and spring, one side of base is equipped with the recess for placing the injector cylinder, the other side of base is equipped with sliding block, tail board and spring, the recess for placing the injector cylinder is matched with the appearance of injector cylinder, the recess for placing the medicine filling connector is equipped in the upper portion of sliding block, and the main part of medicine filling connector is located in the recess, the inside of medicine filling connector is medicine filling cavity, is the delivery chamber close to the joint side, is the butt joint chamber close to the installation section side, and is equipped with sealing washer, the utility model discloses a medicine filling tool for high viscosity medicine injector, according to the structural characteristics of the injector suitable for high viscosity medicine, the connecting end of injector cylinder is sealed with medicine filling connector butt joint, then fills medicine through the front end of injector cylinder from medicine filling connector, satisfies the filling requirement of high viscosity medicine, the utility model structure is simple, and the operation is convenient.

Description

Technical Field

[0001] This utility model relates to a tooling for injecting high-viscosity drugs into a syringe, belonging to the field of medical devices. Background Technology

[0002] In the biopharmaceutical field, some pharmaceutical products have high viscosity. To facilitate the injection of such drugs, the applicant has specifically designed a syringe suitable for high-viscosity medications, such as... Figure 1 , Figure 2 As shown, a longer and thinner syringe barrel and a thinner needle are used, thereby reducing the diameter contraction ratio from the inside of the syringe barrel to the needle tip, which facilitates the injection of the drug into the needle tip.

[0003] When filling syringes used for high-viscosity drugs, it is difficult to pre-fill from the tail end (flange end) of the syringe barrel; therefore, a special filling tool needs to be designed to pre-fill the syringe with the drug. Utility Model Content

[0004] The purpose of this invention is to provide a filling tool for syringes used for high-viscosity drugs. Based on the structural characteristics of syringes suitable for high-viscosity drugs, the tool allows the drug to be filled from the end of the syringe barrel, thus meeting the filling requirements of high-viscosity drugs.

[0005] To achieve the above-mentioned utility model objectives, this utility model provides a filling tool for a high-viscosity drug syringe, including a filling seat and a filling connector;

[0006] The medicine dispensing station includes a base, a slider, a tail plate, and a spring;

[0007] One side of the base has a groove for placing the syringe barrel, and the other side of the base has a slider, a tail plate and a spring;

[0008] The groove for placing the syringe barrel matches the shape of the syringe barrel. The groove includes a barrel groove, a flange groove, and a plunger groove; the flange groove and the plunger groove form a contact surface between the syringe barrel.

[0009] The other side of the base is provided with a slider that can move horizontally relative to the base, and the direction of movement of the slider is parallel to the axis of the groove where the syringe barrel is placed.

[0010] The base has a tail plate at the rear, and a spring is installed between the slider and the tail plate. The spring is in a compressed state and always pushes the slider towards the groove side of the base where the syringe barrel is placed.

[0011] A groove for placing the drug delivery connector is provided on the upper part of the slider, and the main body of the drug delivery connector is located in the groove;

[0012] One end of the injection connector has a male connector; the connector is connected to a connecting section, and the connecting section is connected to a snap-fit ​​section. The diameter of the snap-fit ​​section is larger than that of the connecting section, and a snap-fit ​​limiting surface is provided on the rear side of the snap-fit ​​section; the front section of the snap-fit ​​section is connected to an installation section.

[0013] The groove inside the slider consists of, in sequence, an installation groove that matches the installation section, a snap-fit ​​groove that matches the snap-fit ​​section, and a connecting groove through which the connecting section passes; a limiting surface is provided at the connection between the snap-fit ​​groove and the connecting groove, and the limiting surface abuts against the snap-fit ​​limiting surface;

[0014] The inside of the injection connector is an injection cavity, with a delivery cavity near the connector and a docking cavity near the installation section. The docking cavity is connected to the connecting end of the syringe barrel, and a corresponding sleeve cavity is provided. The size of the sleeve cavity matches the outer size of the connecting end, and the rear end of the sleeve cavity forms a sleeve limiting surface. A sealing gasket is installed on the rear side of the sleeve cavity, and one end of the sealing gasket abuts against the sleeve limiting surface.

[0015] As a further improvement of this utility model, a pick-and-place groove is provided in the middle and rear part of the barrel groove of the groove for placing the syringe barrel on the base. The size of the pick-and-place groove is larger than the size of the barrel groove.

[0016] As a further improvement of this utility model, the outer surface of the snap-fit ​​section of the drug filling connector is provided with several anti-slip textures.

[0017] As a further improvement of this utility model, the opening end of the socket of the drug delivery connector is provided with a relief cavity, which matches the size of the syringe barrel body.

[0018] As a further improvement of this utility model, a linear sliding guide device is provided between the slider and the base.

[0019] Furthermore, the linear sliding guide device is a guide rod;

[0020] One or two guide rods are provided between the base and the tail plate. A guide hole is provided inside the slider, and the guide hole is fitted on the guide rod, so that the slider can move linearly along the guide rod.

[0021] Furthermore, the guide rods are round rods; two round guide rods are provided between the base and the tail plate.

[0022] Furthermore, the spring is fitted around the outside of the circular guide rod.

[0023] Specifically, the guide hole of the slider forms a spring receiving cavity on the side near the spring;

[0024] The inner diameter of the spring receiving cavity is larger than that of the guide hole, and the inner diameter of the spring receiving cavity is smaller than that of the spring.

[0025] The spring portion can extend into the spring receiving cavity of the slider.

[0026] Furthermore, the linear sliding guide device is a groove-shaped guide structure;

[0027] A trapezoidal protrusion is provided at the bottom of the slider side of the base, and a dovetail groove is provided at the bottom of the slider;

[0028] The cross-section of the trapezoidal protrusion matches the cross-section of the dovetail groove, allowing the slider to slide linearly along the axis of the trapezoidal protrusion.

[0029] When using the injection fixture for high-viscosity drugs, the pre-assembled syringe barrel with piston and push rod is placed into the groove of the base, specifically the main body of the syringe barrel is placed into the barrel groove, the flange is placed into the flange groove, and the push rod passes through the push rod groove. Then, one hand applies force to move the base towards the tail plate, so that the spring is in a compressed state and the slider is completely separated from the syringe barrel. At this time, the other hand places the injection connector with pre-assembled sealing gasket into the groove of the slider, specifically the snap-fit ​​section of the injection connector is placed into the snap-fit ​​groove, the mounting section is placed into the mounting groove, and the opening side of the mounting section faces the connecting end of the syringe barrel, while the connecting section passes through the connecting groove, so that the connector of the injection connector is exposed outside the slider.

[0030] Subsequently, the hand is removed from the injection connector and base, and the spring unfolds to apply a pushing force to the slider, pushing the slider and injection connector together towards the syringe barrel. At this time, the relief cavity and the sleeve cavity of the injection connector move towards the syringe barrel along with the slider, gradually covering the end of the connecting end and the end of the syringe barrel body. Until the limiting surface of the slider abuts against the locking limiting surface of the injection connector, the injection connector is forced against the syringe barrel. Inside the injection connector, the sleeve limiting surface pushes the sealing gasket to completely abut against the end face of the connecting end to achieve a seal, thereby pushing the connecting end and the syringe barrel, so that the flange of the syringe barrel abuts against the syringe barrel abutting surface of the base to achieve a limit. The spring maintains the applied force, so that the delivery cavity and the connecting end of the syringe barrel achieve a static seal through the sealing gasket. At this time, the relief cavity is also sleeved on the end of the syringe barrel body.

[0031] The filling connector is mated with the female connector of the filling pump or filling syringe. This mating process can be performed either by pre-assembly before the filling connector is placed on the slider or by mating after the filling connector has been placed on the slider.

[0032] Once the injection connector and syringe barrel are in place and properly connected, the injection process is initiated. The medication enters the connecting end of the syringe barrel through the female connector, and then enters the syringe barrel, pushing the piston and push rod to move outward. During the injection process, the syringe barrel body is confined within the base and does not move.

[0033] Continue until the required dose of medication is reached in the syringe barrel; then, stop the medication administration procedure.

[0034] After the medication is administered, the syringe barrel containing the medication needs to be removed. At this point, apply force to move the base towards the tail plate, causing the spring to be compressed again. Then, the syringe barrel containing the medication can be removed from the base.

[0035] If further medication is required, a new syringe barrel with a pre-assembled piston and push rod to be filled is then inserted into the groove of the base, aligning the clearance cavity of the medication infuser with the connecting end of the syringe barrel. Then, the base is slowly released, and the spring unfolds to apply a pushing force to the slider, causing the medication infuser to fit onto the connecting end of the syringe barrel, thus achieving a seal.

[0036] After confirming that the injection connector and syringe barrel are in place and properly connected, restart the injection procedure to administer the medication again.

[0037] Repeat this process, injecting the medication into each syringe one by one, until all syringes have been used.

[0038] This invention relates to a filling tool for syringes used to dispense high-viscosity drugs. Based on the structural characteristics of syringes suitable for high-viscosity drugs, a filling connector is used to seal the connecting end of the syringe barrel. Then, the drug is dispensed from the front end of the syringe barrel through the filling connector, thus meeting the filling requirements of high-viscosity drugs.

[0039] The present invention relates to a filling tool for injectors used for high-viscosity drugs, which has a simple structure and is easy to operate. Attached Figure Description

[0040] Figure 1 A schematic diagram of the external structure of a syringe suitable for high-viscosity drugs;

[0041] Figure 2 A schematic diagram of the internal structure of a syringe suitable for high-viscosity drugs;

[0042] In the diagram: 10-Medicine; 11-Syringe barrel; 12-Flange; 13-Connecting end; 14-Piston; 15-Push rod; 16-Needle seat; 17-Needle;

[0043] Figure 3 This is a schematic diagram of the overall structure of the filling tool for a high-viscosity drug injector according to the present invention.

[0044] Figure 4 This is a schematic diagram of the overall structure of the medicine dispensing station of this utility model;

[0045] Figure 5 Cross-sectional view of the overall structure of the medicine dispensing station of this utility model Figure 1 ;

[0046] Figure 6 Cross-sectional view of the overall structure of the medicine dispensing station of this utility model Figure 2 ;

[0047] Figure 7 This is a cross-sectional view of the guide structure of the medicine dispensing station of this utility model;

[0048] Figure 8 This is a schematic diagram of the overall structure of the drug delivery connector;

[0049] Figure 9 This is a schematic diagram of the internal structure of the drug delivery connector;

[0050] Figure 10 This is a schematic diagram of the filling tool used in the first stage of the drug delivery process for a high-viscosity drug syringe.

[0051] Figure 11 for Figure 10 A sectional view;

[0052] Figure 12 This is a schematic diagram of the filling tool used in the second stage of the drug injection process for high-viscosity drugs.

[0053] Figure 13 for Figure 12 A sectional view;

[0054] Figure 14 A schematic diagram of the filling process of a filling tool for a high-viscosity drug syringe;

[0055] Figure 15 This is a magnified view of a portion of the drug delivery connector;

[0056] Figure 16 for Figure 14 A sectional view. Detailed Implementation

[0057] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0058] like Figure 1 , Figure 2 The syringe shown is suitable for filling high-viscosity drugs. When filling high-viscosity drugs, it is preferable not to install the needle seat 16 and needle 17 first. Instead, install the piston 14 and push rod 15 into the syringe barrel 11 and push it all the way down. Then, connect the syringe barrel 11 to the drug filling equipment from the connection end 13 to fill the drug. After the drug enters the syringe barrel 11, it will push the piston 14 and push rod 15, which can ensure that the syringe barrel 11 is tightly filled with drug without any cavities, making the drug dosage more accurate.

[0059] To facilitate the filling of high-viscosity drugs into syringes suitable for high-viscosity medications, this invention provides a filling fixture for high-viscosity drug syringes, the overall structure of which is as follows: Figure 3 As shown, it mainly includes a filling seat 2 and a filling connector 3.

[0060] Drug filling seat 2, the specific structure is as follows Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, it includes a base 21, a slider 22, a tail plate 24, and a spring 25.

[0061] One side of the base 21 is mainly used to place the syringe barrel 11, and the other side of the base 21 is used to set the slider 22.

[0062] The syringe barrel 11 is provided with several grooves to match its shape, including a barrel groove 211, a flange groove 213, and a plunger groove 214. For easy placement and removal of the syringe barrel 11, a larger placement and removal groove 212 is provided in the middle and rear part of the barrel groove 211 to facilitate finger insertion. A syringe barrel abutment surface 215 is formed at the tail of the flange groove 213. The syringe barrel 11, pre-assembled with the piston 14 and plunger 15, can be easily placed into the grooves. After placement, the syringe barrel 11 is horizontal, the flange 12 is located in the flange groove 213, and the plunger 15 passes through the plunger groove 214 without contacting it. At this time, the connecting end 13 of the syringe barrel 11 extends beyond the groove and faces the slider 22.

[0063] On the other side of the base 21, there is a slider 22 that can move horizontally relative to the base 21, and the direction of movement of the slider 22 is parallel to the axis of the syringe barrel 11. The tail end of the base 21 is provided with a tail plate 24, and a spring 25 is provided between the slider 22 and the tail plate 24. The spring 25 is in a compressed state and always pushes the slider 22 toward the side of the base 21 where the syringe barrel 11 is placed.

[0064] A linear sliding guide device is provided between the slider 22 and the base 21.

[0065] The linear sliding guide device can employ guide rods, as shown in the figure. One or two guide rods 23 are provided between the base 21 and the tail plate 24. A guide hole 225 is provided inside the slider 22, and the guide hole 225 is fitted onto the guide rod 23, allowing the slider 22 to move linearly along the guide rod 23. In this embodiment, the guide rod 23 is a round rod, so it is preferable to provide two round guide rods 23, which can also limit the linear movement of the slider 22.

[0066] Linear sliding guide devices can also employ a groove-type guide structure, such as... Figure 7 As shown, a trapezoidal protrusion 219 is provided at the bottom of the slider side of the base 21, while a dovetail groove 227 is provided at the bottom of the slider 22. The cross section of the trapezoidal protrusion 219 matches the cross section of the dovetail groove 227, so that the slider 22 can slide linearly along the axis of the trapezoidal protrusion 219.

[0067] Linear sliding guide devices can also employ mechanisms such as linear guide rails.

[0068] Several grooves are also provided on the upper part of the slider 22 to accommodate the drug filling connector 3.

[0069] The structure of the drug delivery connector 3 is as follows: Figure 8 , Figure 9 As shown. One end of the drug delivery connector 3 has a connector 31, preferably a Luer taper, which is a male connector and can be mated with the female Luer taper of a drug delivery pump or a drug delivery syringe. The connector 31 is connected to a connecting section 32, which is followed by a snap-fit ​​section 33. The snap-fit ​​section 33 has a large diameter and several anti-slip textures on its outer surface for easy gripping by fingers. The rear side of the snap-fit ​​section 33 has a snap-fit ​​limiting surface 34; the front section of the snap-fit ​​section 33 has an installation section 35.

[0070] Correspondingly, the grooves within the slider 22 consist of, in sequence, an mounting groove 221 that matches the mounting section 35, a snap-fit ​​groove 222 that matches the snap-fit ​​section 33, and a connecting groove 223 through which the connecting section 32 passes. A limiting surface 224 is provided at the junction of the snap-fit ​​groove 222 and the connecting groove 223, for abutting against the snap-fit ​​limiting surface 34. The drug filling connector 3 can be placed into the groove of the slider 22. After being placed in position, the drug filling connector 3 is horizontal, and its axis is aligned with the axis of the syringe barrel 11.

[0071] The interior of the injection connector 3 is an injection cavity, with a delivery cavity 36 near the connector 31 and a docking cavity near the mounting section 35. The docking cavity needs to be aligned with the connecting end 13 of the syringe barrel 11, and a corresponding fitting cavity 37 is provided, the size of which matches the outer size of the connecting end 13. The rear end of the fitting cavity 37 forms a fitting limiting surface 38. Furthermore, a relief cavity 39 can also be provided at the opening end of the fitting cavity 37, the relief cavity 39 matching the size of the main body of the syringe barrel 11. Preferably, an annular sealing gasket 4 (e.g., ...) is provided inside the fitting cavity 37. Figure 13 , Figure 15 As shown), the inner diameter of the sealing gasket 4 matches the inner diameter of the end hole of the connecting end 13 of the syringe barrel 11.

[0072] In this invention, a spring 25 is provided between the slider 22 and the tail plate 24. When a guide rod structure is used, it is preferable to sleeve the spring 25 on the guide rod 23, and limit the position of the spring 25 by the guide rod 23. Furthermore, due to the large thickness of the slider 22 (the dimension along the axial direction of the drug dispensing connector 3), a spring receiving cavity 226 is also provided on the side of the guide hole 225 of the slider 22 near the spring 25. That is, the inner diameter of the spring receiving cavity 226 is larger than that of the guide hole 225, and the inner diameter of the spring receiving cavity 226 is smaller than that of the spring 25, so that part of the spring 25 can be inserted into the spring receiving cavity 226 of the slider 22, thereby increasing the receiving space of the spring 25, so that the spring 25 can be selected with a longer size, and thus provide greater elasticity.

[0073] A limiting block 218 may also be provided between the base 21 and the slider 22. The limiting block 218 is located below the groove side of the base 21 where the syringe barrel 11 is placed. It can limit the distance at which the slider 22 resets under the action of the spring 25, preventing the slider 22 from getting too close to the syringe barrel 11, causing the syringe barrel 11 to be squeezed out of the groove and detached from the base 21.

[0074] When using the filling tool for high-viscosity drug syringes of this utility model, firstly as follows: Figure 10 , Figure 11 As shown, the syringe barrel 11, pre-assembled with piston 14 and push rod 15, is placed into the groove of base 21. In particular, the main body of syringe barrel 11 is placed into barrel groove 211, flange 12 is placed into flange groove 213, and push rod 15 passes through push rod groove 214.

[0075] Then, with one hand, force is applied to move the base 21 toward the tail plate 24, so that the spring 25 is in a compressed state and the slider 22 is completely separated from the syringe barrel 11. At this time, the other hand puts the pre-assembled sealing gasket 4 into the groove of the slider 22. In particular, the snap-fit ​​section 33 of the drug filling connector 3 is put into the snap-fit ​​groove 222, the mounting section 35 is put into the mounting groove 221, and the opening side of the mounting section 35 faces the connecting end 13 of the syringe barrel 11. The connecting section 32 passes through the connecting groove 223, so that the connector 31 of the drug filling connector 3 is exposed outside the slider 22.

[0076] Then, the hand leaves the injection connector 3 and the base 21, at which point... Figure 12 and Figure 13As shown, the spring 25 unfolds, applying a pushing force to the slider 22, pushing the slider 22 and the drug delivery connector 3 together towards the syringe barrel 11. At this time, the clearance cavity 39 and the sleeve cavity 37 of the drug delivery connector 3 move towards the syringe barrel 11 along with the slider 22, gradually covering the end of the connecting end 13 and the end of the main body of the syringe barrel 11. Until the limiting surface 224 of the slider 22 abuts against the locking limiting surface 34 of the drug delivery connector 3, the drug delivery connector 3 is forced against the syringe barrel 11. Inside the drug delivery connector 3, the sleeve limiting surface 38 pushes the sealing gasket 4 to completely abut against the end face of the connecting end 13, achieving a seal. This further pushes the connecting end 13 and the syringe barrel 11, causing the flange 12 of the syringe barrel 11 to abut against the syringe barrel abutment surface 215 of the base 21, achieving a limit. The spring 25 maintains the applied force, so that the delivery cavity 36 and the connecting end 13 of the syringe barrel 11 achieve a static seal through the sealing gasket 4. At this time, the relief cavity 39 is also fitted onto the end of the syringe barrel 11 body.

[0077] like Figure 15 , Figure 16 As shown, connector 31 of the drug delivery connector 3 is connected to the female connector 5 of the drug delivery pump or drug delivery syringe; thus, the drug delivery program is started, and the drug 10 enters the connecting end 13 of the syringe barrel 11 through the female connector 5, and then enters the syringe barrel 11, pushing the piston 14 and push rod 15 to move outward, further as... Figure 14 As shown, during the injection process, the syringe barrel 11 is confined within the base 21 and does not move.

[0078] Continue until the required dosage of the drug 10 is reached in the syringe barrel 11; then, stop the drug filling process, apply force to move the base 21 toward the tail plate 24, so that the spring 25 is compressed again. At this time, the syringe barrel 11 filled with the drug 10 can be removed from the base 21, and a new syringe barrel 11 with a pre-assembled piston 14 and push rod 15 to be filled with the drug can be placed into the groove of the base 21, so that the relief cavity 39 of the drug filling connector 3 is aligned with the connecting end 13 of the syringe barrel 11. Slowly loosen the base 21 so that the drug filling connector 3 is fitted onto the connecting end 13 of the syringe barrel 11 to achieve a seal, and then restart the drug filling process. Repeat this operation to carry out the drug filling operation on each syringe barrel 11.

[0079] To facilitate docking, a chamfer is preferably provided at the opening end of the relief cavity 39 of the drug filling connector 3, which facilitates the insertion process of the connecting end 13.

[0080] The preferred embodiments of this utility model have been described in detail above, but this utility model is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this utility model, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A dispensing fixture for injectors used to dispense high-viscosity drugs, characterized in that, Includes a filling station and a filling connector; The medicine dispensing station includes a base, a slider, a tail plate, and a spring; One side of the base has a groove for placing the syringe barrel, and the other side of the base has a slider, a tail plate and a spring; The groove for placing the syringe barrel matches the shape of the syringe barrel. The groove includes a barrel groove, a flange groove, and a plunger groove; the flange groove and the plunger groove form a contact surface between the syringe barrel. The other side of the base is provided with a slider that can move horizontally relative to the base, and the direction of movement of the slider is parallel to the axis of the groove where the syringe barrel is placed. The base has a tail plate at the rear, and a spring is installed between the slider and the tail plate. The spring is in a compressed state and always pushes the slider towards the groove side of the base where the syringe barrel is placed. A groove for placing the drug delivery connector is provided on the upper part of the slider, and the main body of the drug delivery connector is located in the groove; One end of the injection connector has a male connector; the connector is connected to a connecting section, and the connecting section is connected to a snap-fit ​​section. The diameter of the snap-fit ​​section is larger than that of the connecting section, and a snap-fit ​​limiting surface is provided on the rear side of the snap-fit ​​section; the front section of the snap-fit ​​section is connected to an installation section. The groove inside the slider consists of, in sequence, an installation groove that matches the installation section, a snap-fit ​​groove that matches the snap-fit ​​section, and a connecting groove through which the connecting section passes; a limiting surface is provided at the connection between the snap-fit ​​groove and the connecting groove, and the limiting surface abuts against the snap-fit ​​limiting surface; The inside of the injection connector is an injection cavity, with a delivery cavity near the connector and a docking cavity near the installation section. The docking cavity is connected to the connecting end of the syringe barrel, and a corresponding sleeve cavity is provided. The size of the sleeve cavity matches the outer size of the connecting end, and the rear end of the sleeve cavity forms a sleeve limiting surface. A sealing gasket is installed on the rear side of the sleeve cavity, and one end of the sealing gasket abuts against the sleeve limiting surface.

2. The dispensing fixture for a high-viscosity drug syringe as described in claim 1, characterized in that, A pick-and-place slot is provided in the middle and rear part of the barrel groove of the base where the syringe barrel is placed. The size of the pick-and-place slot is larger than the size of the barrel groove.

3. The dispensing fixture for a high-viscosity drug syringe as described in claim 1, characterized in that, The outer surface of the snap-fit ​​section of the drug filling connector is provided with several anti-slip textures.

4. The dispensing fixture for a high-viscosity drug syringe as described in claim 1, characterized in that, The opening end of the socket of the injection connector is provided with a relief cavity, which matches the size of the syringe barrel body.

5. The dispensing fixture for a high-viscosity drug syringe as described in claim 1, characterized in that, A linear sliding guide device is provided between the slider and the base.

6. The dispensing fixture for a high-viscosity drug syringe as described in claim 5, characterized in that, The linear sliding guide device is a guide rod; One or two guide rods are provided between the base and the tail plate. A guide hole is provided inside the slider, and the guide hole is fitted on the guide rod, so that the slider can move linearly along the guide rod.

7. The dispensing fixture for a high-viscosity drug syringe as described in claim 6, characterized in that, The guide rod is a round rod; two round guide rods are provided between the base and the tail plate.

8. The dispensing fixture for a high-viscosity drug syringe as described in claim 7, characterized in that, The spring is sleeved on the outside of the circular guide rod.

9. The dispensing fixture for a high-viscosity drug syringe as described in claim 8, characterized in that, The guide hole of the slider forms a spring receiving cavity on the side near the spring; The inner diameter of the spring receiving cavity is larger than that of the guide hole, and the inner diameter of the spring receiving cavity is smaller than that of the spring. The spring portion can extend into the spring receiving cavity of the slider.

10. The dispensing fixture for a high-viscosity drug syringe as described in claim 5, characterized in that, The linear sliding guide device is a groove-shaped guide structure; A trapezoidal protrusion is provided at the bottom of the slider side of the base, and a dovetail groove is provided at the bottom of the slider; The cross-section of the trapezoidal protrusion matches the cross-section of the dovetail groove, allowing the slider to slide linearly along the axis of the trapezoidal protrusion.

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