A hemorrhoid cream syringe

Abstract

A kind of hemorrhoid cream bolus injector, including push rod and medicine storage pipe, push nozzle is installed at one end of medicine storage pipe, circular ring wing plate is provided at the other end of medicine storage pipe, piston head is provided in medicine storage pipe, one end of push rod is inserted into medicine storage pipe and is connected on piston head, the other end of push rod is provided with push handle, the center of piston head is provided with inlay hole, insert hole is provided in push rod, and insert hole is communicated with inlay hole;Above all, the ingenious combination of piston head and inner bolt head makes the cream in medicine storage pipe and push nozzle almost completely be pushed out, reduces waste and also avoids the pollution risk of remaining drug;The thread inside push nozzle cooperates with the thread on the outer edge of inner bolt head, and the cream in push nozzle can be completely pushed out when rotating push rod;The present application effectively solves the problems of drug residue and pollution of traditional bolus injector by innovative structure, improves drug utilization rate and reduces patient treatment cost.

Description

Technical Field

[0001] This utility model belongs to the field of hemorrhoid suppository administration technology, specifically relating to a hemorrhoid cream injector. Background Technology

[0002] In treating specific conditions such as hemorrhoids, rectal administration is a common method, usually requiring the use of a syringe plunger to deliver the ointment to the affected area. These plungers employ a syringe-like structure, with a long, thin nozzle inserted into the anus. Due to the nozzle's unique design and length requirements, residual ointment inside the nozzle after each administration cannot be expelled, leading to unnecessary waste of the single-tube medication during multiple uses.

[0003] Patent CN218552893U discloses a disposable hemorrhoid ointment injector. This design aims to help patients administer medication more conveniently through a simple and reasonable structure, while solving the problem of obstructed ointment dispensing caused by excessively small gaps in traditional injectors. Although this injector improves the drug delivery effect to some extent, its design still has some shortcomings. First, due to the design of the inner plug, it inevitably occupies part of the outer tube's space, which could have been used to hold more ointment. Therefore, to ensure the rated capacity of ointment can be accommodated, the manufacturer has to increase the size of the outer tube, directly leading to increased production costs. Second, the injector uses a conical inner plug to push the ointment in the nozzle. However, during use, as the conical inner plug gradually penetrates deeper into the nozzle, it gradually blocks the space, making it difficult for the ointment to be smoothly squeezed out. This design limitation not only affects the effective utilization rate of the ointment but may also affect the treatment effect, as it may result in the ointment not being applied evenly and fully to the affected area.

[0004] In summary, while the aforementioned patents offer a solution to some of the problems faced by traditional syringes, there is still room for improvement in increasing the amount of ointment dispensed and ensuring smooth dispensing. Therefore, the market still needs a more optimized design that can avoid ointment waste, reduce the risk of contamination, and improve the patient experience and treatment effectiveness. Utility Model Content

[0005] The present invention aims to provide a hemorrhoid cream injector to solve the technical problem that the existing hemorrhoid cream injector nozzles cannot dispense the cream, resulting in drug waste.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A hemorrhoid cream injector includes a push rod and a drug reservoir. One end of the drug reservoir is fitted with an injection nozzle, and the other end is fitted with an annular wing plate. A piston head is located inside the drug reservoir. One end of the push rod is inserted into the drug reservoir and connected to the piston head. The other end of the push rod is fitted with a push handle. An embedded hole is formed in the center of the piston head. An insertion hole is formed inside the push rod, and the insertion hole communicates with the embedded hole. A square rod passes through the insertion hole. An inner plug head is located in the embedded hole, with its end protruding from the embedded hole. The end of the square rod is fixedly connected to the inner plug head. The diameter of the inner plug head is equal to the inner diameter of the injection nozzle. The inner wall of the injection nozzle has an internal thread, and the outer edge of the inner plug head has an external thread that matches the internal thread.

[0008] Furthermore, the injection nozzle is provided with a cap.

[0009] Furthermore, the rear end of the push rod is provided with an annular groove, and a notch is opened on the annular wing plate. A positioning post is hinged in the notch by a pin. The positioning post can rotate around the pin, and after rotation, the end of the positioning post is located in the annular groove.

[0010] Compared with existing technologies, the beneficial effects of this invention are as follows: The ingenious combination of the piston head and the inner plug head allows the cream in the reservoir tube and the injection nozzle to be almost completely ejected, reducing waste and avoiding the risk of contamination from residual medication. The internal threads of the injection nozzle engage with the threads on the outer edge of the inner plug head, ensuring the cream is completely ejected when the push rod is rotated, further guaranteeing effective medication use. Furthermore, a cap can be installed on the injection nozzle to prevent contamination when not in use. The overall design mimics the ease of operation of a syringe while optimizing the internal structure to avoid increased production costs due to larger outer tubes, providing users with a more hygienic, economical, and convenient solution. Ultimately, this invention effectively solves the problems of drug residue and contamination in traditional injection devices through its innovative structure, improving drug utilization and reducing patient treatment costs. Attached Figure Description

[0011] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0012] Figure 1 This is a schematic diagram of the structure of a hemorrhoid cream injector according to the present invention;

[0013] Figure 2 This is a cross-sectional view of a hemorrhoid cream injector according to the present invention;

[0014] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0015] Figure 4 This is a cross-sectional view of a hemorrhoid cream injector during the injection process;

[0016] Figure 5 for Figure 4 Enlarged view of section B in the middle. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] The present invention will be further described in detail below with reference to the embodiments.

[0019] like Figure 1-5 As shown, a specific embodiment of the hemorrhoid cream injector provided by this utility model is as follows:

[0020] A hemorrhoid cream injector includes a push rod 1 and a drug reservoir 2. One end of the drug reservoir 2 is fitted with an injection nozzle 3, and the other end of the drug reservoir 2 is provided with an annular wing plate 4. A piston head 5 is provided inside the drug reservoir 2. One end of the push rod 1 is inserted into the drug reservoir 2 and connected to the piston head 5. The other end of the push rod 1 is provided with a push handle 6. An embedded hole 7 is provided in the center of the piston head 5. An insertion hole 8 is provided inside the push rod 1 and is connected to the embedded hole 7. A square rod 9 passes through the insertion hole 8. An inner plug head 10 is provided in the embedded hole 7. The end of the inner plug head 10 protrudes from the embedded hole 7. The end of the square rod 9 is fixedly connected to the inner plug head 10. The diameter of the inner plug head 10 is equal to the inner diameter of the injection nozzle 3. The inner wall of the injection nozzle 3 is provided with an internal thread, and the outer edge of the inner plug head 10 is provided with an external thread that matches the internal thread.

[0021] The push rod 1 has an annular groove 11 at its rear end and a notch 12 on the annular wing plate 4. A positioning post 14 is hinged in the notch 12 by a pin 13. The positioning post 14 can rotate around the pin. After rotation, the end of the positioning post 14 is located in the annular groove 11.

[0022] In this embodiment, the piston head 5 is used to push the cream in the drug reservoir 2, while the inner plug head 10 is used to push the remaining cream in the injection nozzle 3. Ultimately, all the cream can be expelled, avoiding drug residue. The specific working process is as follows: After inserting the injection nozzle 3 into the anus, medication is administered. Using the same operating method as a syringe, push the plunger 6, transmitting the thrust through the plunger 1. The piston head 5 pushes the cream in the drug reservoir 2 (initially, the inner plug head 10 is located inside the piston head 5). The cream is squeezed and pushed, ultimately being expelled through the injection nozzle 3. When the piston head 5 touches the end of the drug reservoir 2 (at this time, it protrudes from the inner plug head 3),... The inner plug 10 of the recessed hole 7 is threadedly engaged with the injection nozzle 3. The cream in the medicine reservoir 2 has been completely ejected, but the injection nozzle 3 is full of cream. Then, the positioning pin 14 is rotated so that the end of the positioning pin 14 enters the annular groove 11. Then, the push rod 1 is rotated, and the push rod 1 is linked to the square rod 9 to rotate, so that the square rod 9 drives the inner plug 10 to rotate. Since the inner plug 10 and the injection nozzle 3 are threadedly engaged, the inner plug 10 will inevitably rotate along the axial direction of the injection nozzle 3 under the drive of the square rod 9. During the forward rotation, the inner plug 10 can eject the cream in the injection nozzle 3.

[0023] Preferably, a cap 15 can also be provided on the injection nozzle 3 to prevent the injection nozzle 3 from being contaminated when not in use.

[0024] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hemorrhoid cream injector, comprising a push rod and a drug reservoir, wherein a push nozzle is installed at one end of the drug reservoir, an annular wing plate is provided at the other end of the drug reservoir, a piston head is provided inside the drug reservoir, one end of the push rod is inserted into the drug reservoir and connected to the piston head, and a push handle is provided at the other end of the push rod, characterized in that: The piston head has an embedded hole at its center, and the push rod has an insertion hole that is connected to the embedded hole. A square rod passes through the insertion hole, and an inner plug is provided in the embedded hole. The end of the inner plug protrudes from the embedded hole, and the end of the square rod is fixedly connected to the inner plug. The diameter of the inner plug is equal to the inner diameter of the injection nozzle. The inner wall of the injection nozzle is provided with an internal thread, and the outer edge of the inner plug is provided with an external thread that matches the internal thread.

2. The hemorrhoid cream applicator according to claim 1, characterized in that: The injection nozzle is equipped with a cap.

3. The hemorrhoid cream applicator according to claim 1, characterized in that: The push rod has an annular groove at its rear end and a notch on the annular wing plate. A positioning pin is hinged to the notch by a pin and can rotate around the pin. After rotation, the end of the positioning pin is located in the annular groove.

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