High-precision dose continuous injector
By introducing a locking component and a toothed ring design into the syringe, the problem of inaccurate dosage caused by minute displacement of the piston rod is solved, achieving high-precision drug injection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN COSTCO ANIMAL HUSBANDRY EQUIPMENT CO LTD
- Filing Date
- 2024-11-20
- Publication Date
- 2026-07-03
AI Technical Summary
The piston rod of existing continuous syringes is prone to slight displacement during injection, which can lead to dosage adjustment failure and inaccurate drug dosage.
The device employs a locking assembly and a gear ring design. The locking assembly includes a locking block and a gear ring. The locking block and the gear ring cooperate to ensure that the adjusting sleeve is fixed when the piston rod is reset, thus avoiding error accumulation. Dosage calibration is performed by matching the tooth pitch of the gear ring with the circumferential scale of the adjusting sleeve.
This achieves stable reciprocating motion of the piston rod, avoids dosage adjustment errors, improves the accuracy and stability of the injected drug solution, and ensures accurate drug dosage.
Smart Images
Figure CN224441516U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of livestock equipment technology, and in particular to a high-precision continuous dosing injector. Background Technology
[0002] In livestock production, disease prevention and control injections are necessary for livestock. Veterinary syringes are used to administer drugs or vaccines to livestock in batches. Continuous syringes, as a type of veterinary syringe, eliminate the cumbersome step of repeatedly drawing up medication required by traditional syringes because they can continuously administer medication, significantly improving the efficiency of injection operations. Therefore, they have become one of the most widely used injection devices in animal husbandry.
[0003] The problem with existing technology is that when the piston rod of a continuous injector is continuously injected, a slight displacement will occur, which will cause the dosage adjustment to fail and thus cause inaccurate injection dosage. Summary of the Invention
[0004] The purpose of this invention is to propose a high-precision dosing injector with stable structure and high accuracy.
[0005] To solve the above-mentioned technical problems, this application provides a high-precision continuous dosing injector, which adopts the following technical solution:
[0006] A high-precision continuous dosing syringe includes a handle, a housing, a dosing chamber connected to one end of the housing, and the other end of the dosing chamber connected to the injection outlet. A piston rod is provided, and the piston rod is provided with an adjusting sleeve. One end of the piston rod passes through the housing and extends into the dosing chamber, while the other end is connected to the handle. A locking assembly is provided on the outer periphery of the adjusting sleeve and the inner wall of the housing. When the piston rod is reset, the locking assembly fixes the adjusting sleeve.
[0007] The locking assembly includes a locking block and a gear ring. When the piston rod drives the adjusting sleeve to extend, the locking block disengages from the gear ring. When the piston rod retracts and resets, the locking block engages with the gear ring, fixing the adjusting sleeve and the inner wall of the outer casing.
[0008] The toothed ring includes a plurality of teeth evenly distributed, and the locking mechanism engages between the teeth.
[0009] The locking block is located on the adjusting sleeve, and the gear ring is located on the inner wall of the outer shell. When the adjusting sleeve extends, the locking block disengages from the gear ring. When the adjusting sleeve retracts, the locking block falls into the gear ring. When the adjusting sleeve rotates, the locking block falls between the teeth in the gear ring that correspond to the locking block axis.
[0010] The card block is provided in two side by side, each corresponding to a tooth of the gear ring.
[0011] The locking blocks are provided in two sets, symmetrically arranged at both ends of the circumference of the adjusting sleeve.
[0012] The handle includes a front handle and a rear handle. The front handle is integrally connected to the outer shell, and the rear handle is hinged to the front handle by a pin. The rear end of the piston rod is fixedly connected to the rear handle and extends through the outer shell into the dosing chamber.
[0013] The outer shell has a first toothed ring at the front end and a second toothed ring at the rear end. The dosing chamber is connected to the first toothed ring, and the adjusting sleeve is engaged with the second toothed ring at the rear end.
[0014] The dosage chamber is provided with a scale, the adjusting sleeve is provided with an internal thread, and the outer ring of the rear end of the piston rod is provided with an external thread, which is used to adjust the rotation of the sleeve, drive the piston rod to extend or retract, and adjust the distance between the piston rod and the dosage chamber.
[0015] A bracket for fixing the medicine bottle is provided on the upper part of the outer shell, and the liquid inlet is located on the rear handle and is connected to the medicine bottle tubing.
[0016] Compared with the prior art, this application has the following main advantages:
[0017] This invention, through the design of the locking mechanism and the toothed ring, ensures that the adjusting sleeve is always fixed during the reciprocating motion of the piston rod, thus preventing the accumulation of errors and the failure of dosage adjustment. At the same time, it can match the tooth pitch of the toothed ring with the circumferential adjustment scale of the adjusting sleeve, enabling timely calibration and improving the accuracy of the injected drug solution. Attached Figure Description
[0018] To more clearly illustrate the solutions in this application, the accompanying drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the syringe of this utility model;
[0020] Figure 2 This is a partial structural schematic diagram of the syringe of this utility model;
[0021] Figure 3 This is a schematic diagram of the structure of the adjusting sleeve and piston rod of this utility model;
[0022] Figure 4 This is a schematic diagram of the front handle and dosing chamber of this utility model;
[0023] Figure 5 This is a schematic diagram of the card slot assembly of this utility model;
[0024] Figure 6 This is a schematic diagram of the structure of the adjusting sleeve of this utility model. Detailed Implementation
[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application, are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.
[0026] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0027] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.
[0028] A high-precision continuous dosing injector, such as Figures 1 to 6 The device includes a handle, a housing 2, and a dosing chamber 3. One end of the dosing chamber 3 is connected to the housing 2, and the other end of the dosing chamber 3 is connected to the injection outlet. A piston rod 4 is provided, and an adjusting sleeve 5 is provided on the piston rod 4. One end of the piston rod 4 passes through the housing 2 and extends into the dosing chamber 3, and the other end is connected to the handle. A locking component 6 is provided on the outer periphery of the adjusting sleeve 5 and the inner wall of the housing. When the piston rod 4 is reset, the locking component 6 fixes the adjusting sleeve 5.
[0029] The design of the locking component 6 ensures that the adjusting sleeve 5 is always in the reset position during the reciprocating motion of the piston rod 4, thus preventing the accumulation of errors and the failure of dose adjustment.
[0030] The locking component 6 can also be configured to engage the locking block 601 and the toothed groove. In the initial state, the locking block 601 is located on the outer ring of the adjusting sleeve 5 and the toothed groove is located on the inner wall of the outer shell. The locking block 601 slides along the toothed groove. When the locking block 601 disengages from the toothed groove, the adjusting part of the adjusting sleeve 5 can be rotated to complete the injection dosage adjustment. During reset, due to the axial constraint force, the piston rod 4 retracts axially, and the locking block 601 falls into the toothed groove to complete the positioning. This will not cause further circumferential displacement of the adjusting sleeve 5 and will not produce any deviation.
[0031] The locking assembly 6 includes a locking block 601 and a gear ring. When the piston rod 4 drives the adjusting sleeve 5 to extend, the locking block disengages from the gear ring. When the piston rod 4 retracts and resets, the locking block engages with the gear ring, fixing the adjusting sleeve 5 and the inner wall of the outer shell.
[0032] At the same time, the tooth pitch of the gear ring can be matched with the circumferential adjustment scale of the adjusting sleeve 5, so that it can be aligned in time and improve the accuracy of the injected drug solution.
[0033] The toothed ring includes a plurality of teeth evenly distributed, and the locking mechanism engages between the teeth.
[0034] The locking block 601 is located on the adjusting sleeve 5, and the gear ring is located on the inner wall of the outer shell. When the adjusting sleeve 5 extends, the locking position disengages from the gear ring. When the adjusting sleeve 5 retracts, the locking position falls into the gear ring. When the adjusting sleeve 5 rotates, the locking position falls between the teeth in the gear ring that correspond to the locking position axis.
[0035] Alternatively, the locking position can be set inside the outer casing, and the toothed ring can be set as the adjusting sleeve 5. After the adjusting sleeve 5 is released from the restriction of the locking position, the adjusting sleeve 5 can be rotated circumferentially. After the dosage adjustment is completed, the toothed ring of the adjusting sleeve 5 falls back into the locking position to complete the positioning.
[0036] The locking block 601 has two blocks arranged side by side, each corresponding to a tooth of the gear ring. Using multiple locking blocks 601 effectively improves lifespan; even if one locking block 601 is damaged during use, the remaining blocks 601 can still perform their positioning function, resulting in a long service life.
[0037] Two or more locking blocks 601 arranged side by side can play a good fixing role and prevent the plastic parts from coming loose when the outer shell deforms.
[0038] Two sets of the locking blocks 601 are symmetrically arranged at both ends of the circumference of the adjusting sleeve 5.
[0039] The symmetrical design allows for easy fixing and provides high stability.
[0040] The handle includes a front handle 101 and a rear handle 102. The front handle 101 is integrally connected to the outer shell, and the rear handle 102 is hinged to the front handle 101 by a pin. The rear end of the piston rod 4 is fixedly connected to the rear handle 102 and extends through the outer shell into the dosing chamber 3.
[0041] The front end of the outer shell is provided with a first toothed ring 6021 and the rear end is provided with a second toothed ring 6022. The dosing chamber 3 is connected to the first toothed ring 6021 and the adjusting sleeve 5 is engaged with the second toothed ring 6022 at the rear end.
[0042] The dosage chamber 3 is provided with a scale, the adjusting sleeve 5 is provided with an internal thread, and the outer ring of the rear end of the piston rod 4 is provided with an external thread. When the adjusting sleeve 5 is rotated, it drives the piston rod 4 to extend or retract, thereby adjusting the distance between the piston rod 4 and the dosage chamber 3.
[0043] A bracket 7 for fixing the medicine bottle 8 is provided on the upper part of the outer shell. The liquid inlet is located on the rear handle 102 and is connected to the medicine bottle 8 through a hose (not shown in the figure).
[0044] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.
Claims
1. A high-precision, continuous dosing syringe, characterized by: The device includes a handle, a housing, a dosing chamber connected to one end of the housing, and an injection outlet connected to the other end of the dosing chamber. A piston rod is provided, and an adjusting sleeve is provided on the piston rod. One end of the piston rod passes through the housing and extends into the dosing chamber, while the other end is connected to the handle. A locking assembly is provided on the outer periphery of the adjusting sleeve and the inner wall of the housing. When the piston rod is reset, the locking assembly fixes the adjusting sleeve.
2. A high precision syringe for continuous dosing according to claim 1, characterized in that: The locking assembly includes a locking block and a gear ring. When the piston rod drives the adjusting sleeve to extend, the locking block disengages from the gear ring. When the piston rod retracts and resets, the locking block engages with the gear ring, fixing the adjusting sleeve and the inner wall of the outer casing.
3. A high precision syringe for continuous dosing according to claim 2, characterized in that: The toothed ring includes a plurality of teeth evenly distributed, and the locking mechanism engages between the teeth.
4. A high precision syringe for continuous dosing according to claim 3, characterized in that: The locking block is located on the adjusting sleeve, and the gear ring is located on the inner wall of the outer shell. When the adjusting sleeve extends, the locking block disengages from the gear ring. When the adjusting sleeve retracts, the locking block falls into the gear ring. When the adjusting sleeve rotates, the locking block falls between the teeth in the gear ring that correspond to the locking block axis.
5. A high precision syringe for continuous dosing according to claim 3, characterized in that: The card block is provided in two side by side, each corresponding to a tooth of the gear ring.
6. A high precision dosing syringe according to claim 4, characterized in that: The locking blocks are provided in two sets, symmetrically arranged at both ends of the circumference of the adjusting sleeve.
7. A high precision dosing syringe according to claim 4, characterized in that: The handle includes a front handle and a rear handle. The front handle is integrally connected to the outer shell, and the rear handle is hinged to the front handle by a pin. The rear end of the piston rod is fixedly connected to the rear handle and extends through the outer shell into the dosing chamber.
8. The high precision dosing syringe of claim 1, wherein: The outer shell has a first toothed ring at the front end and a second toothed ring at the rear end. The dosing chamber is connected to the first toothed ring, and the adjusting sleeve is engaged with the second toothed ring at the rear end.
9. The high precision dosing syringe of claim 1, wherein: The dosage chamber is provided with a scale, the adjusting sleeve is provided with an internal thread, and the outer ring of the rear end of the piston rod is provided with an external thread, which is used to adjust the rotation of the sleeve, drive the piston rod to extend or retract, and adjust the distance between the piston rod and the dosage chamber.
10. The high precision dosing syringe of claim 7, wherein: A bracket for fixing the medicine bottle is provided on the upper part of the outer shell, and the liquid inlet is located at the rear handle and is connected to the medicine bottle tubing.