Split type injection head for injecting paste for root canal therapy
By designing a split injection head, the problem of overflow and waste of the calcium hydroxide paste syringe is solved, the paste can be reused and operated easily, and the operation difficulty is reduced.
Patent Information
- Application Number
- CN202422706241.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-07
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-11-07
AI Technical Summary
The existing calcium hydroxide paste syringe structure causes the paste to overflow from the root canal and be wasted, and cannot be preserved when it cannot be fully used, affecting the difficulty of operation and resource utilization.
A split injection head was designed, including a plug connector, an injection nozzle and a detachable cover. An oblique opening was provided at the lower end of the injection tube, and the axis formed an obtuse angle. Combined with a threaded connection, the paste can be reused and the injection pressure can be reduced.
It effectively avoids paste overflow, reduces operation difficulty, and realizes the reuse of paste, reduces waste and improves utilization efficiency.
Smart Images
Figure CN223323604U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of oral treatment equipment, in particular to a split injection head for paste injection used in root canal treatment. Background Art
[0002] In traditional root canal treatment, gutta-percha and root paste are the main filling materials. However, in some cases, if the root canal system and the periapical tissue need to be separated, an alternative material is needed for sealing.
[0003] Calcium hydroxide has antiseptic and analgesic properties and is believed to promote the growth of root canal and periapical tissues.
[0004] Therefore, in Europe and the United States, calcium hydroxide has been widely used as an active ingredient in root canal treatment drugs for infections.
[0005] Calcium hydroxide is also widely used for apical sealing of teeth with immature root canals, sealing of perforated areas, and similar applications. Calcium hydroxide is also actively used as a short-term disinfectant (temporary root canal filling material) during treatment of infected root canals. Root canal treatment agents containing calcium hydroxide are believed to be less irritating to tissues and have a bactericidal effect due to their strong alkalinity, a soft tissue dissolving effect, an analgesic effect, a healing-promoting effect, an exudate-stopping effect, an inhibitory effect on root resorption, and an effect that induces hard tissue formation. As described above, calcium hydroxide is not only a bactericidal agent but is also believed to improve the healing of root canal and periapical tissues.
[0006] Root canal filling materials containing calcium hydroxide have excellent bactericidal effects and promote healing of root canal and periapical tissues, which are useful, but are insufficient to promote healing in refractory pulpitis or apical periodontitis, for example, where healing is hindered by difficult-to-remove bacterial infection or by bacterial invasion of peri-root canal lesions or apical lesions. Therefore, there is a need for root canal filling materials that can promote healing in refractory pulpitis or apical periodontitis.
[0007] The calcium hydroxide paste of the existing technology is made into a syringe-shaped structure, and then equipped with a corresponding number of disposable injection heads. Since the bottom opening of the existing injection head is small and horizontal, the liquid pressure at the opening is relatively high during use. If the operation is improper, the paste will often overflow from the root canal when sealing the medicine.
[0008] In addition, it is often the case that a calcium hydroxide paste cannot be used up, and half of the calcium hydroxide paste that has been used cannot be sealed and has to be discarded, resulting in waste. Utility Model Content
[0009] The utility model aims to overcome the deficiencies in the prior art and provides a split injection head for paste injection in root canal treatment.
[0010] This application provides the following technical solutions:
[0011] A split injection head for paste injection for root canal treatment is characterized in that it includes a plug connector corresponding to one end of a paste syringe, an injection nozzle extending from one end of the plug connector, a cover detachably connected to the injection end of the injection nozzle, at least one injection tube is provided, the upper end of the injection tube is detachably connected to the injection end of the injection nozzle, and an injection opening is provided at the lower end of the injection tube.
[0012] On the basis of the above technical solutions, the following further technical solutions can be provided:
[0013] The axis of the injection opening directly forms an obtuse angle with the axis of the injection tube.
[0014] The axis of the plug output port is not collinear with the axis of the injection nozzle.
[0015] The end of the injection end of the injection nozzle is provided with a thread that is matched with the sealing cover.
[0016] Utility model advantages:
[0017] The utility model has a simple structure and is easy to use. The calcium hydroxide paste that cannot be used up at one time can be used next time, which avoids the waste of medicine. The specific opening at the lower end of the injection tube effectively reduces the outlet pressure when the paste is started to be injected, effectively avoiding the situation where the paste overflows from the root canal due to inaccurate force control when sealing the medicine, and effectively reduces the difficulty of operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the structure of the utility model when in use;
[0019] Figure 2 It is a schematic diagram of the structure when the cover is used. DETAILED DESCRIPTION
[0020] like Figure 1-2 As shown, a split injection head for paste injection for root canal treatment includes a plug connector 2 corresponding to one end of a calcium hydroxide paste syringe 1. The plug connector 2 is a hollow conical structure as a whole, and a sealing layer 2a corresponding to one end of the calcium hydroxide paste syringe 1 is bonded to its inner wall. The sealing layer 2a is made of rubber or silicone and deforms when squeezed, thereby increasing the friction between one end of the calcium hydroxide paste syringe 1 and the plug connector 2 and also playing a sealing role between the two.
[0021] An injection nozzle 3 extends from one end of the connector 2, with the axis of the nozzle 3 forming a predetermined angle with the axis of the connector 2. A cap 4 is detachably connected to the injection end of the nozzle 3. The end of the nozzle 3 has external threads 4a that mate with the cap 4, and the cap 4 has corresponding internal threads 4b. A sealing gasket 4c is also attached to the cap 4.
[0022] A set of injection tubes 5 with identical dimensions are provided. The tubes 5 are formed into an elongated, tapered structure. The inner wall of the upper end of the tubes 5 is provided with a connecting threaded section 5b that mates with the external thread 4a. A lateral injection opening 5a is provided on the outer wall of the lower end of the tubes 5. The axis of the injection opening 5a forms an obtuse angle with the axis of the tubes 5. The oblique openings and overall oblong shape of the injection openings 5a reduce the outlet pressure at the start of paste injection, reducing the force applied by the fingers when pushing the calcium hydroxide paste syringe during root canal sealing. This prevents paste overflow from the root canal due to inaccurate force control, effectively reducing operational difficulty.
[0023] When the calcium hydroxide paste cannot be used up at one time, the injection nozzle 3 can be sealed by the cover 4 to ensure that the calcium hydroxide paste in the calcium hydroxide paste syringe can be used next time (the storage time is about one week), and a new injection tube 5 can be used to perform root canal treatment again.
Claims
1. A split injection head for paste injection for root canal treatment, characterized by: It comprises a plug connector (2) corresponding to one end of a paste injector (1), an injection nozzle (3) extending from one end of the plug connector (2), a cover (4) detachably connected to the injection end of the injection nozzle (3), at least one injection tube (5) is provided, the upper end of the injection tube (5) is detachably connected to the injection end of the injection nozzle (3), and an injection opening (5a) is provided at the lower end of the injection tube (5).
2. The split injection head for paste injection for root canal treatment according to claim 1, characterized in that: The axis of the injection opening (5a) directly forms an obtuse angle with the axis of the injection tube (5).
3. The split injection head for paste injection for root canal treatment according to claim 1, characterized in that: The axis of the output port of the plug connector (2) is not collinear with the axis of the injection nozzle (3).
4. The split injection head for paste injection for root canal treatment according to claim 1, characterized in that: The end of the injection end of the injection nozzle (3) is provided with an external thread (4a) that is cooperatively connected to the sealing cover (4).