A heat insulation protection structure for a hot gutta-percha filling machine
By designing a conical heat insulation cover and a semi-cylindrical silver needle protective cover made of high-temperature resistant polymer materials, the problem of the silver needle protective cover of the gutta-percha filling machine easily deforming and falling off at high temperatures was solved, realizing the protection of the silver needle and the continuity of the treatment process, reducing costs and infection risks.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LANZHOU UNIV STOMATOLOGICAL HOSPITAL
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-03
AI Technical Summary
The protective cover of the silver needle in existing gutta-percha filling machines is prone to deformation and detachment under high temperatures, which can cause burns to patients and increase treatment costs. In addition, the silver needles are easily damaged.
A protective structure was designed, comprising a conical heat insulation cover and a semi-cylindrical silver needle protective cover, which are fixed by a retaining ring. It is made of high-temperature resistant polymer material. The silver needle protective cover is semi-conical to accommodate rotation at different angles, and the outer wall is provided with heat dissipation grooves and protrusions for easy gripping.
It effectively prevents the silver needle protective cover from deforming or being damaged, reduces treatment costs, avoids the risk of burns, ensures the continuity of the treatment process, and reduces the risk of cross-infection.
Smart Images
Figure CN224441486U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of medical device technology, specifically relating to a heat insulation protection structure for a hot gutta-percha filling machine. Background Technology
[0002] Root canal treatment is a common dental procedure aimed at removing infected pulp tissue, disinfecting the root canal, and filling it with appropriate materials to restore the tooth's structure and function. A gutta-percha filling machine is a dental medical device used during root canal treatment to fill the enlarged root canal with medication, ensuring the filling material adheres to the canal wall.
[0003] The guide needle for heated gutta-percha filling machines is mainly made of silver needle tube, with a length of 21-25mm and a diameter of 0.455-0.812mm. By utilizing the property of silver needles softening when heated, the injection needle can be rotated 360°. However, silver needles are soft and easily broken, especially during transportation between treatment sessions, which can easily lead to collisions, damage, and increased treatment costs.
[0004] The tip of the gutta-percha filling machine can reach a maximum temperature of 230°C during treatment. To protect patients, the mainstream heat-insulating silver needle protective cover on the market is a tight-fitting sleeve type. During continuous heating, it is easily deformed and detached due to the high temperature, which may burn the patient's oral cavity. Utility Model Content
[0005] This utility model provides a heat insulation protection structure for a hot gutta-percha filling machine. The purpose is to solve the problem that conventional heat insulation silver needle protective covers are tight-fitting sleeves, which are prone to deformation and detachment under high temperature during continuous heating. It also provides protection for guiding silver needles and prevents damage to the silver needles.
[0006] Therefore, the present invention adopts the following technical solution:
[0007] A heat insulation protection structure for a hot gutta-percha filling machine includes a conical heat insulation cover and a semi-cylindrical silver needle protective cover.
[0008] The heat insulation cover has open ends at both the front and rear. The heat insulation cover is fitted onto the head end of the hot gutta-percha filling machine. There are two annular retaining rings inside the heat insulation cover. With the support of the two retaining rings, the outer wall of the heat insulation cover is separated from the outer wall of the hot gutta-percha filling machine.
[0009] The silver needle protective cover is fitted over the heat insulation cover, and the length of the silver needle protective cover is greater than that of the heat insulation cover; the inner wall of the silver needle protective cover is provided with two semi-circular grooves, which are used to engage the heat insulation cover; the head end of the silver needle protective cover extends forward and is provided with a vertical baffle, which is located directly in front of the head end of the hot gutta-percha filling machine and is used to protect the silver needle.
[0010] Furthermore, the silver needle protective cover is semi-conical in shape, with a large opening at the tail end and a small opening at the head end, and the taper matches the taper of the heat insulation cover.
[0011] Furthermore, the outer wall of the heat insulation cover is provided with several hollow heat dissipation grooves for heat dissipation of the heat insulation cover.
[0012] Furthermore, the outer wall of the silver needle protective cover is provided with several protruding ridges to facilitate gripping the heat insulation cover.
[0013] Furthermore, the heat insulation cover and the silver needle protective cover are made of high-temperature resistant polymer materials.
[0014] The beneficial effects of this utility model are as follows: the heat insulation cover is in direct contact with the hot gutta-percha filling machine through the retaining ring, separating the silver needle protective cover body from the heat insulation cover, avoiding deformation and damage of the silver needle protective cover due to high temperature radiation, and effectively improving the life of the silver needle protective cover.
[0015] During the treatment process, the silver needle is rotated at different angles according to the patient's root canal morphology. To accommodate the different angles of the silver needle, the silver needle protective cover of this application adopts a semi-conical cylindrical design, which is inexpensive, easy to use, and reasonably designed. It effectively solves the problem of easy damage during the transportation of guiding silver needles, reduces treatment costs, and at the same time, the silver needle protective cover can prevent cross-infection between the injection needle and the surrounding environment during the interval between uses. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the silver needle protective cover of this utility model installed on the head end of a hot gutta-percha filling machine;
[0017] Figure 2 This is a schematic diagram of the heat insulation cover of this utility model;
[0018] Figure 3 This is a schematic diagram of the silver needle protective cover of this utility model;
[0019] In the diagram: 1-Heat gutta-percha filling machine, 2-Heat insulation cover, 3-Silver needle protective cover, 4-Hollow heat dissipation groove, 5-Inner ring buckle protrusion, 6-Protruding ridge, 7-First slot, 8-Second slot, 9-Baffle. Detailed Implementation
[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:
[0021] like Figure 1 and 2As shown, a heat insulation protection structure for a hot gutta-percha filling machine includes a conical heat insulation cover 2 and a semi-cylindrical silver needle protective cover 3. The heat insulation cover 2 has open ends at both the front and rear, and is fitted onto the head end of the hot gutta-percha filling machine 1. The heat insulation cover 2 has two annular retaining rings inside, which, supported by the two retaining rings, create a gap between the outer wall of the heat insulation cover 2 and the outer wall of the hot gutta-percha filling machine 1. Several hollow heat dissipation grooves 4 are distributed on the outer wall of the heat insulation cover 2 for heat dissipation.
[0022] like Figure 1 and 3 As shown, the silver needle protective cover 3 is fitted onto the heat insulation cover 2, and the length of the silver needle protective cover 3 is greater than that of the heat insulation cover 2. The inner wall of the silver needle protective cover 3 has two semi-circular grooves that engage with the heat insulation cover 2. The head end of the silver needle protective cover 3 extends forward and has a vertical baffle 9, located directly in front of the head end of the hot gutta-percha filling machine 1, and the baffle 9 protects the silver needle. The silver needle protective cover 3 is semi-conical, with a large opening at the tail end and a small opening at the head end, and its taper matches that of the heat insulation cover 2. The outer wall of the silver needle protective cover 3 has several raised ridges 6 for easy gripping of the heat insulation cover 2. Both the heat insulation cover 2 and the silver needle protective cover 3 are made of high-temperature resistant polymer materials. Separating the silver needle protective cover 3 from the heat insulation cover 2 prevents the silver needle protective cover 3 from deformation and damage due to high-temperature radiation, effectively improving the lifespan of the silver needle protective cover 3.
[0023] During use, the front end (i.e., Figure 1 The instrument is inserted into the patient's mouth, with a heat shield 2 placed over the tip to prevent burns to the oral mucosa. During treatment, the heated gutta-percha filling machine 1 needs to be used multiple times. Improper placement of the machine during interstitial treatment can cause the guide needle to break, interrupting the treatment process. The use of the silver needle protective cover 3 effectively prevents guide needle breakage, reduces the risk of cross-infection with the surrounding environment, ensures a continuous treatment process, shortens treatment time, and reduces treatment costs.
Claims
1. A heat shield protection structure for a warm gutta-percha filling machine, characterized by, It includes a conical heat shield (2) and a semi-cylindrical silver needle protective shield (3). The heat insulation cover (2) is open at both the front and rear ends. The heat insulation cover (2) is fitted onto the head end of the hot gutta-percha filling machine (1). The heat insulation cover (2) has two annular retaining rings inside. With the support of the two retaining rings, the outer wall of the heat insulation cover (2) is separated from the outer wall of the hot gutta-percha filling machine (1). The silver needle protective cover (3) is fitted outside the heat insulation cover (2), and the length of the silver needle protective cover (3) is greater than that of the heat insulation cover (2); the inner wall of the silver needle protective cover (3) is provided with two semi-circular grooves, which are used to attach the heat insulation cover (2); the head end of the silver needle protective cover (3) extends forward and is provided with a vertical baffle (9), which is located directly in front of the head end of the hot gutta-percha filling machine (1), and the baffle (9) is used to protect the silver needle.
2. The heat shield protection structure for a warm gutta-percha filling machine according to claim 1, wherein The silver needle protective cover (3) is a semi-conical cylinder with a large opening at the tail end and a small opening at the head end, and the taper matches the taper of the heat insulation cover (2).
3. The heat shield protection structure for a warm gutta-percha filling machine according to claim 1, wherein The outer wall of the heat insulation cover (2) has several hollow heat dissipation grooves (4) for dissipating heat from the heat insulation cover (2).
4. The heat shield protection structure for a warm gutta-percha filling machine according to claim 1, wherein The outer wall of the silver needle protective cover (3) is provided with several protruding ridges (6) to facilitate gripping the heat insulation cover (2).
5. The heat shield protection structure for a warm gutta-percha filling machine according to claim 1, wherein The heat insulation cover (2) and the silver needle protective cover (3) are made of high-temperature resistant polymer materials.