Safe oral micro-invasive tooth extraction car needle

Abstract

This utility model relates to the field of dental bur technology and discloses a safe minimally invasive dental extraction bur, including a bur shaft, a needle tip mounted at the front end of the bur shaft, an observation sleeve and a protective sleeve sequentially and movably sleeved on the outside of the bur shaft, a limiting device mounted at the rear end of the bur shaft, a threaded sleeve threaded onto the outside of the protective sleeve, and a push rod movably sleeved inside the threaded sleeve, with one end of the push rod fixedly connected to a bearing seat. This safe minimally invasive dental extraction bur, with the observation sleeve and protective sleeve sequentially sleeved on the outside of the bur shaft, and the rear ends of the observation sleeve and protective sleeve fixed by a rear cover, protects the outside of the observation sleeve from high-temperature sterilization, preventing wear on the pigment coating on the outside of the observation sleeve. Furthermore, the graduated grooves on the outside of the observation sleeve allow for observation by increasing the drilling depth of the bur.

Description

Technical Field

[0001] This utility model relates to the field of dental bur technology, specifically a safe dental bur for minimally invasive tooth extraction. Background Technology

[0002] A dental bur is a consumable tool used by dentists. It is a very thin steel needle consisting of a needle tip and a shank. It can be inserted into a high-speed or low-speed motor to help dentists make cavities and repair teeth.

[0003] In the process of using minimally invasive dental extraction burs, since the drilling depth needs to be observed, the corresponding length is marked on the outside of the bur with a coating. However, in order to improve the cleanliness of the bur during use, it is necessary to sterilize the bur at high temperature. High temperature will cause the coating to melt, causing the markings to disappear. The disappearance of the markings will affect the next use. Therefore, we propose a safe minimally invasive dental extraction bur. Utility Model Content

[0004] To address the shortcomings of existing safe minimally invasive dental extraction burs, this invention provides a safe minimally invasive dental extraction bur with an observation sleeve and a protective sleeve sequentially fitted onto the outside of the bur shaft. The protective sleeve protects the outside of the observation sleeve, preventing high temperatures from burning or damaging the graduated groove, which would affect the efficiency of the bur. This solves the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a safe oral minimally invasive tooth extraction bur, including a bur bar, a needle tip installed at the front end of the bur bar, an observation sleeve and a protective sleeve sequentially and movably sleeved on the outside of the bur bar, a limiting device installed at the rear end of the bur bar, a threaded sleeve threaded onto the outside of the protective sleeve, a push rod movably sleeved inside the threaded sleeve, and a bearing seat fixedly connected to one end of the push rod.

[0006] Preferably, the observation sleeve has a graduated groove on its outside, and a protective sleeve is fitted over the outside of the observation sleeve, and the protective sleeve is made of a transparent material.

[0007] Preferably, the protective sleeve has a groove on its outer side, and a slider is installed at the rear end of the push rod, with the slider sleeved inside the groove.

[0008] Preferably, the bearing housing is fitted with an outer sleeve via a bearing, and a retaining ring is fixedly connected to the front end of the outer sleeve, with the retaining ring filled with nitrogen gas.

[0009] Preferably, the limiting device includes a rear cover, which is installed at the rear end of the needle bar. A fastening bolt is installed inside the rear cover, and a mounting base is fixedly connected to the rear end of the rear cover. The rear cover is sleeved on the rear end of the observation sleeve and the protective sleeve.

[0010] Preferably, the bearing housing is sleeved on the outside of the needle bar and the needle tip, and a drive device is installed at the rear end of the needle bar.

[0011] Preferably, the needle bar has an internal mounting hole, and the rear end of the needle tip is fixedly connected to a mounting pin, which is sleeved inside the mounting hole.

[0012] Compared with existing safe minimally invasive dental extraction carts, this utility model has the following advantages: 1. This safe, minimally invasive dental extraction bur consists of an observation sleeve and a protective sleeve that are sequentially fitted onto the outside of the bur shaft. The rear ends of the observation sleeve and the protective sleeve are secured with rear covers. The protective sleeve protects the outside of the observation sleeve, preventing the pigment coating on the outside of the observation sleeve from being worn away by the high temperature during equipment sterilization. Furthermore, the graduated grooves on the outside of the observation sleeve allow for observation by increasing the drilling depth of the bur.

[0013] 2. This safe, minimally invasive dental extraction needle, by rotating the threaded sleeve, pushes the bearing seat to move to a position outside the needle rod and needle tip. After the stop ring is placed outside the needle tip, that is, during the drilling process of the needle tip into the tooth, after drilling to a certain depth, the stop ring limits the drilling depth of the needle tip, preventing the needle tip from continuing to drill and causing contact with oral tissue, which would cause wear to the oral tissue. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of the present utility model; Figure 2 This is a schematic diagram of the main body of this utility model in its disassembled state. Figure 3 This is a schematic cross-sectional view of the main body of this utility model; Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0015] In the diagram: 1. Needle bar; 2. Mounting hole; 3. Mounting pin; 4. Needle tip; 5. Observation sleeve; 6. Scale groove; 7. Protective sleeve; 8. Slide groove; 9. Back cover; 10. Fastening bolt; 11. Mounting base; 12. Threaded sleeve; 13. Push rod; 14. Bearing housing; 15. Outer sleeve; 16. Retaining ring. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 A safe, minimally invasive dental extraction bur includes a bur bar 1, with a needle head 4 mounted at the front end of the bur bar 1. After the bur bar 1 is installed on a dental extraction device, the needle head 4 is rotated to drill a hole in the tooth. An observation sleeve 5 and a protective sleeve 7 are sequentially and movably sleeved around the outside of the bur bar 1. The observation sleeve 5 and the protective sleeve 7 are interlocked and constrained. The observation sleeve 5 is observed through a graduated groove 6 engraved on its exterior, ensuring that the observation sleeve 5 remains sealed. This effectively prevents [the spread of bacteria] during high-temperature sterilization. To prevent burns to the scale groove 6 structure, a limiting device is installed at the rear end of the needle bar 1. The outer thread of the protective sleeve 7 is threaded with a threaded sleeve 12, and the inner movable sleeve of the threaded sleeve 12 is fitted with a push rod 13. One end of the push rod 13 is fixedly connected to a bearing seat 14. By adjusting the position of the bearing seat 14, the bearing seat 14 drives the stop ring 16 to adjust its position outside the needle 4. That is, according to the different tooth sizes and drilling requirements, the drilling depth can be controlled by adjusting the position of the stop ring 16, thus avoiding excessive depth and causing friction damage to normal oral tissues.

[0018] Please see Figure 2 The observation sleeve 5 has a scale groove 6 on its outside. The protective sleeve 7 is sleeved on the outside of the observation sleeve 5 and is made of transparent material. The observation sleeve 5 is sleeved on the outside of the needle rod 1 and the protective sleeve 7 is sleeved on the outside of the needle rod 1. The protective sleeve 7 drives the observation sleeve 5 to be installed on the outside of the needle rod 1. The observation sleeve 5 has a scale groove 6 on its outside. The drilling depth can be monitored by observing the scale groove 6. The position of the threaded sleeve 12 outside the protective sleeve 7 can be adjusted, that is, the extension distance of the stop ring 16 outside the needle 4 can be adjusted.

[0019] Please see Figure 2 The protective sleeve 7 has a groove 8 on its outside. A slider is installed at the rear end of the push rod 13. The slider is sleeved inside the groove 8. The groove 8 limits the forward and backward movement trajectory of the push rod 13. The threaded sleeve 12 is sleeved outside one end of the push rod 13. When the threaded sleeve 12 is rotated, the threaded sleeve 12 and the protective sleeve 7 move in a threaded motion, which can push the stop ring 16 to the position outside the needle 4, thereby accurately controlling the drilling depth.

[0020] Please see Figure 4An outer sleeve 15 is mounted on the outside of the bearing housing 14 via a bearing. A stop ring 16 is fixedly connected to the front end of the outer sleeve 15. The inside of the stop ring 16 is filled with nitrogen gas. It is sleeved on the outside of the bearing housing 14 via the outer sleeve 15. During the rotation of the needle 4, when the stop ring 16 contacts the tooth, the stop ring 16 limits the maximum drilling depth. The inner side of the outer sleeve 15 is equipped with a bearing, which reduces the wear of the stop ring 16 on the tooth. Therefore, during the use of the equipment, the drilling depth of the tooth is limited, and the degree of tooth damage is reduced.

[0021] Please see Figure 3 The limiting device includes a rear cover 9, which is installed at the rear end of the needle bar 1. A fastening bolt 10 is installed inside the rear cover 9. A mounting base 11 is fixedly connected to the rear end of the rear cover 9. The rear cover 9 is sleeved on the rear end of the observation sleeve 5 and the protective sleeve 7. After the observation sleeve 5 and the protective sleeve 7 are sequentially sleeved on the outside of the needle bar 1, the rear cover 9 is installed at the rear end of the needle bar 1. The rear cover 9 locks and limits the position of the observation sleeve 5 and the fastening bolt 10. The fastening bolt 10 is installed inside the rear cover 9. The fastening bolt 10 drives the rear cover 9 to be fixed at the rear end of the needle bar 1, improving the stability of the rear cover 9 during positioning.

[0022] Please see Figure 1 The bearing seat 14 is sleeved on the outside of the needle bar 1 and the needle head 4. The rear end of the needle bar 1 is equipped with a drive device. The bearing seat 14 is sleeved on the outside of the needle bar 1 and the needle head 4, so the position of the bearing seat 14 outside the needle bar 1 and the needle head 4 can be adjusted to ensure the convenience of adjusting the bearing seat 14.

[0023] Please see Figure 2 and Figure 3 The needle bar 1 has an installation hole 2 inside. The rear end of the needle head 4 is fixedly connected to an installation pin 3. The installation pin 3 is sleeved inside the installation hole 2. The front end of the needle bar 1 has an installation hole 2. At the same time, the installation pin 3 installed at one end of the needle head 4 is engaged inside the installation hole 2, ensuring the convenience of matching and installing the needle head 4 with the needle bar 1.

[0024] Working principle: In use, a needle 4 is installed at the front end of the needle bar 1. An observation sleeve 5 and a protective sleeve 7 are sequentially installed on the outside of the needle bar 1. The observation sleeve 5 has a graduated groove 6 on its outside. The drilling depth can be adjusted by observing the graduations in the graduated groove 6. After the observation sleeve 5 and protective sleeve 7 are installed, a rear cover 9 is installed at the rear end of the needle bar 1 to fix their positions. To adjust the drilling depth required for different teeth, the threaded sleeve 12 is rotated. The threaded sleeve 12 pushes the bearing seat 14 forward, thus controlling the position of the stop ring 16 outside the needle 4. During drilling, the stop ring 16 blocks the outside of the tooth, limiting the drilling depth of the needle 4 and preventing continuous drilling that could lead to contact with the gums and cause damage to the oral cavity.

[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 safe type of oral micro-invasive tooth extraction needle, comprising a needle rod (1), a needle head (4) is installed at the front end of the needle rod (1), characterized in that: The needle bar (1) is movably fitted with an observation sleeve (5) and a protective sleeve (7) in sequence. A limit device is installed at the rear end of the needle bar (1). A threaded sleeve (12) is threaded onto the outside of the protective sleeve (7). A push rod (13) is movably fitted inside the threaded sleeve (12). One end of the push rod (13) is fixedly connected to a bearing seat (14).

2. The safe oral minimally invasive tooth extraction bur according to claim 1, characterized in that: The observation sleeve (5) has a scale groove (6) on its outside, and a protective sleeve (7) is fitted onto the outside of the observation sleeve (5), and the protective sleeve (7) is made of transparent material.

3. The safe oral minimally invasive tooth extraction bur according to claim 1, characterized in that: The protective sleeve (7) has a groove (8) on its outside, and a slider is installed at the rear end of the push rod (13), with the slider sleeved inside the groove (8).

4. The safe oral minimally invasive tooth extraction bur according to claim 1, characterized in that: The bearing housing (14) is fitted with an outer sleeve (15) via a bearing. A stop ring (16) is fixedly connected to the front end of the outer sleeve (15). The stop ring (16) is filled with nitrogen gas.

5. The safe oral minimally invasive tooth extraction bur according to claim 1, characterized in that: The limiting device includes a rear cover (9), which is installed at the rear end of the needle bar (1). A fastening bolt (10) is installed inside the rear cover (9). A mounting base (11) is fixedly connected to the rear end of the rear cover (9). The rear cover (9) is sleeved on the rear end of the observation sleeve (5) and the protective sleeve (7).

6. The safe oral minimally invasive tooth extraction bur according to claim 1, characterized in that: The bearing seat (14) is sleeved on the outside of the needle bar (1) and the needle (4), and a drive device is installed at the rear end of the needle bar (1).

7. The safe oral minimally invasive tooth extraction bur according to claim 1, characterized in that: The needle bar (1) has an installation hole (2) inside, and the rear end of the needle (4) is fixedly connected to an installation pin (3), which is sleeved inside the installation hole (2).

Images