High-speed turbine handpiece with high safety

Abstract

The utility model provides a high-speed turbine handpiece with high safety, and belongs to the technical field of medical instruments. Comprising a machine head, a handle and a tail, the front end of the handle is connected with the machine head, and the tail is fixed to a rear port of the handle; the machine head comprises a machine head shell, a worm gear assembly and a button assembly are arranged in the machine head shell, the upper portion of the machine head shell is covered with a machine head cover, the machine head cover is screwed with the machine head shell through threads, and the threaded connection position of the machine head cover and the machine head shell is tightly supported through an elastic piece. A machine head neck part is arranged at the rear part of the machine head, is fixedly connected with the front end of the handle, and is in positioning connection with the handle through an indenting structure. The dental high-speed turbine handpiece solves the problem of hidden dangers of loosening and falling of components in the working process of the dental high-speed turbine handpiece. Meanwhile, the anti-backflow device is arranged on the tail part of the dental handpiece, so that the problem of treatment table waterway pollution caused by sewage backflow of a turbine handpiece is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to a high-speed turbine handpiece with high safety. Background Art

[0002] A dental handpiece is a common surgical tool. A high-speed turbine dental drill handpiece is a dental handpiece, and is a common instrument used by doctors to drill and grind teeth. Problems with existing high-speed turbine dental handpieces: First, the head shell in the handpiece of the dental handpiece is threadedly connected to the head cover for fixing the button assembly. In the prior art, the connection between the head cover and the head shell generally does not adopt any anti-loosening structure, or only installs an O-ring to prevent loosening. When the turbine handpiece is running at high speed, the threads of the head cover may loosen and fall off due to insufficient friction, causing the button assembly to loosen and fall off, causing harm to the patient. Secondly, in the prior art, the neck of the handpiece and the handle are only bonded, without a fixing device, or are fixed with a fixing pin. Here, the pin is also prone to loosening and falling off after long-term high-temperature sterilization. Moreover, the connection between the handpiece and the handle adopts a 90° right-angle connection, which reduces the comfort of the doctor when using it.

[0003] In addition, a tail assembly is provided at the rear end of the dental handpiece handle. When working, cooling water enters the dental handpiece through the tail assembly. Due to structural defects, when the water supply is stopped, the cooling water inside the dental handpiece will flow back, causing pollution to the water channel of the treatment table.

[0004] Based on the above problems, it is necessary to propose improvements. Utility Model Content

[0005] The technical problem solved by the utility model is to provide a high-safety high-speed turbine handpiece. The utility model aims to solve the problem of hidden dangers of loosening and falling between components during the operation of a dental high-speed turbine handpiece.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by this utility model is:

[0007] A high-speed turbine handpiece with high safety includes a handpiece, a handle and a tail, the front end of the handle is connected to the handpiece, and the tail is fixed to the rear port of the handle; the handpiece includes a handpiece shell, a turbine assembly and a button assembly are provided in the handpiece shell, and the upper part of the handpiece shell is covered by a handpiece cover, which is characterized in that: the handpiece cover is screwed with the handpiece shell through a thread, and the threaded connection between the handpiece cover and the handpiece shell is tightened by an elastic part; a handpiece neck is provided at the rear of the handpiece, and the handpiece neck is fixedly connected to the front end of the handle, and the handpiece neck and the handle are positioned and connected by a concave structure.

[0008] Among them, the head cover is provided with an external thread, and the head shell is provided with an internal thread. The external thread of the head cover is screwed together with the internal thread of the head shell. An annular groove is provided on the external thread of the head cover, and the elastic part is arranged in the annular groove. The outer circle size of the elastic part is larger than the inner hole of the head matched with it.

[0009] Furthermore, the elastic member is a C-shaped clip spring.

[0010] Among them, the head neck and the front end of the handle are fitted and bonded together; a pit is provided on the circumference of the head neck, and the position on the handle corresponding to the pit is pressed into the pit to form a depression to realize the connection and positioning of the head neck and the handle.

[0011] Furthermore, a pit is provided on the circumference of the neck of the machine head and a corresponding depression is formed on the handle to engage with the pit.

[0012] Furthermore, a plurality of pits are evenly distributed on the circumference of the neck of the machine head, and a plurality of corresponding depressions are formed on the handle to engage with the pits.

[0013] Furthermore, the recess on the neck of the machine head is an annular recess along the circumference, and correspondingly, an annular depression corresponding to the recess is formed on the handle.

[0014] The connection between the handle and the handpiece is an elevation connection structure, and the elevation angle a is 93° to 100°.

[0015] In which, the tail is provided with an anti-backflow device, which includes a front water pipe seat, a rear water pipe seat, a spring and a steel ball. The front water pipe seat and the rear water pipe seat are fixedly connected and coaxially installed in the tail shell, and the rear water pipe seat and the tail shell are sealed by an O-ring; the front water pipe seat and the rear water pipe seat are both provided with axial water holes, and a spring and a steel ball are provided in the inner cavity surrounded by the front water pipe seat and the rear water pipe seat. The steel ball is pressed against the inner mouth of the water hole behind the water pipe seat, and the two ends of the spring are respectively pressed against the steel ball and the inner mouth of the water hole in the front water pipe seat. The outer port of the water hole in the rear water pipe seat is connected to the rear water pipe, and the outer port of the water hole in the front water pipe seat is connected to the internal water pipe.

[0016] The advantages of this utility model compared with the prior art are:

[0017] 1. This solution addresses the problem of loosening of the threaded connection between the nose cover and the nose shell. By providing an elastic member at the threaded connection between the nose cover and the nose shell, the elastic member is compressed to generate a supporting force, tightening the threaded connection structure. This prevents the button assembly from loosening and falling off due to insufficient thread friction during high-speed operation of the turbine handpiece, thereby improving safety performance.

[0018] 2. This solution addresses the problem of the handpiece and handle becoming loose. By creating a recessed groove around the neck of the handpiece, the handle and handpiece are bonded together and then pressed down with a tool to create a depression that snaps into the groove. This ensures the connection between the handpiece neck and the handle, preventing the handpiece from becoming loose. This structure provides a convenient and reliable connection, resolving the problem of the handpiece and handle becoming loose after long-term high-temperature sterilization using the pins used in the prior art.

[0019] 3. In this solution, the connection between the head and the handle is set to an elevation structure to improve the comfort of holding during operation;

[0020] 4. In this solution, an anti-backflow device is set on the water channel at the tail. When working, the water at the rear flows in through the rear water pipe, overcoming the spring force to open the steel ball, and the water flows into the handpiece through the pipe for cooling. When the water supply is stopped, the water pressure at the rear disappears, and the spring pushes the steel ball to block the water hole port behind the water pipe seat, thereby preventing water from flowing back, thereby solving the problem of water channel pollution of the treatment table caused by sewage backflow from the turbine handpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the machine head in the utility model;

[0023] Figure 3 This is a schematic structural diagram of the anti-backflow device on the tail portion of the present invention. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

[0026] See also Figure 1-3 , describe the embodiments of the present utility model in detail.

[0027] Example: High-speed turbine handpiece with high safety, see Figure 1 and 2 As shown, it includes a head 1, a handle 2 and a tail 3, the front end of the handle 2 is connected to the head 1, and the tail 3 is fixed on the rear port of the handle 2; the head 1 includes a head shell 1-1, a turbine assembly 1-2 and a button assembly 1-3 are provided in the head shell 1-1, the upper part of the head shell 1-1 is covered by a head cover 1-4, and the head cover 1-4 is screwed with the head shell 1-1 through threads, and the threaded connection between the head cover 1-4 and the head shell 1-1 is tightened by an elastic member 1-5.

[0028] Specifically, the head cover 1-4 is provided with an external thread, and the head shell 1-1 is provided with an internal thread. The external thread of the head cover 1-4 is screwed together with the internal thread of the head shell 1-1. An annular groove 1-4-1 is provided on the external thread of the head cover 1-4, and the elastic member 1-5 is arranged in the annular groove 1-4-1.

[0029] In the implementation structure of the above-mentioned handpiece and handpiece cover, in order to address the problem that the threaded connection between the handpiece cover and the handpiece shell is easy to loosen, an elastic member is provided at the threaded connection between the handpiece cover and the handpiece shell. The elastic member is compressed to generate a supporting force to tighten the threaded connection structure. This prevents the button assembly from loosening and falling off due to insufficient thread friction during high-speed operation of the turbine handpiece, thereby preventing patient injury and improving safety performance.

[0030] Preferably, the elastic member 1-5 is a C-shaped retaining spring. The outer circle of the C-shaped retaining spring clamps the inner hole of the machine head. The advantages of using a retaining spring are high friction and resistance to high temperature steam sterilization.

[0031] In this embodiment, refer to Figure 1 As shown, a head neck 1-6 is provided at the rear of the head 1, and the head neck 1-6 is fixedly connected to the front end of the handle 2. The head neck 1-6 and the handle 2 are positioned and connected through a concave structure.

[0032] For details, see Figure 1 and 2 As shown, the head neck 1-6 and the front end of the handle 2 are fitted and bonded together; a pit 1-6-1 is provided on the circumference of the head neck 1-6, and a depression 2-1 is formed by pressing at a position corresponding to the pit 1-6-1 on the handle 2, which is inserted into the pit 1-6-1 to realize the connection and positioning of the head neck 1-6 and the handle 2.

[0033] The first embodiment of the indentation structure: a pit 1-6-1 is provided on the circumference of the neck portion 1-6 of the machine head, and a corresponding indentation 2-1 is formed on the handle 2 to engage with the indentation.

[0034] The second embodiment of the indentation structure: a plurality of pits 1-6-1 are evenly distributed on the circumference of the neck portion 1-6 of the machine head, and a plurality of corresponding indentations 2-1 are formed on the handle 2 to engage with the handle.

[0035] A third embodiment of the concave structure: the concave 1-6-1 of the head neck 1-6 is an annular concave along the circumference, and correspondingly, an annular concave 2-1 corresponding to it is formed on the handle 2.

[0036] The aforementioned indentation structure addresses the problem of the handpiece and handle being easily loosened. By creating a recessed groove around the neck of the handpiece, the handle and handpiece are bonded together and then pressed down with a tool to create a recessed groove that snaps into the groove. This secures the connection between the handpiece neck and handle, preventing the handpiece from loosening. This convenient and reliable structure solves the problem of the handpiece and handle becoming loose after long-term high-temperature sterilization using the pins used in the prior art.

[0037] In this embodiment, refer to Figure 2 As shown, the connection between the handle 2 and the handpiece 1 is an elevation connection structure, and preferably, the elevation angle a is 93° to 100°. This structure is convenient for improving the comfort of hand holding during operation.

[0038] In this embodiment, refer to Figure 1 As shown, the tail portion 3 is provided with an anti-backflow device. Figure 3 As shown, the backflow prevention device includes a front water pipe seat 3-1, a rear water pipe seat 3-2, a spring 3-3 and a steel ball 3-4, the front water pipe seat 3-1 and the rear water pipe seat 3-2 are fixedly connected and coaxially installed in the shell of the tail 3, and the rear water pipe seat 3-2 and the shell of the tail 3 are sealed by an O-ring 3-5; the front water pipe seat 3-1 and the rear water pipe seat 3-2 are both provided with axial water holes, and the inner cavity surrounded by the front water pipe seat 3-1 and the rear water pipe seat 3-2 is provided with a spring 3-3 and a steel ball 3-4, the steel ball 3-4 is pressed against the inner opening of the water hole of the rear water pipe seat 3-2, and the two ends of the spring 3-3 are respectively pressed against the steel ball 3-4 and the inner opening of the water hole of the front water pipe seat 3-1, the outer port of the water hole of the rear water pipe seat 3-2 is connected to the rear water pipe 3-6, and the outer port of the water hole of the front water pipe seat 3-1 is connected to the internal water pipe.

[0039] When the above-mentioned backflow prevention device is working, water from the rear flows in through the rear water pipe, overcoming the spring force to open the steel ball, and the water flows through the pipe into the handpiece for cooling. When the water supply is stopped, the water pressure at the rear disappears, and the spring pushes the steel ball to block the water hole port behind the water pipe seat, thereby preventing water from flowing back, thereby solving the problem of water pollution in the treatment table caused by sewage backflow from the turbine handpiece.

[0040] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0041] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A high-speed turbine handpiece with high safety, comprising a handpiece (1), a handle (2) and a tail (3), wherein the front end of the handle (2) is connected to the handpiece (1), and the tail (3) is fixed to the rear end of the handle (2); the handpiece (1) comprises a handpiece shell (1-1), wherein a turbine assembly (1-2) and a button assembly (1-3) are arranged in the handpiece shell (1-1), and the upper part of the handpiece shell (1-1) is covered by a handpiece cover (1-4), characterized in that: The machine head cover (1-4) is screwed together with the machine head shell (1-1) through a thread, and the threaded connection between the machine head cover (1-4) and the machine head shell (1-1) is tightened by an elastic member (1-5); a machine head neck (1-6) is provided at the rear of the machine head (1), and the machine head neck (1-6) is fixedly connected to the front end of the handle (2), and the machine head neck (1-6) and the handle (2) are positioned and connected through a concave structure.

2. The high-speed turbine handpiece with high safety according to claim 1, characterized in that: The machine head cover (1-4) is provided with an external thread, and the machine head shell (1-1) is internally provided with an internal thread. The external thread of the machine head cover (1-4) is screwed together with the internal thread of the machine head shell (1-1). An annular groove (1-4-1) is provided on the external thread of the machine head cover (1-4). The elastic member (1-5) is arranged in the annular groove (1-4-1). The outer circle size of the elastic member (1-5) is larger than the inner hole of the machine head matched with it.

3. The high-speed turbine handpiece with high safety according to claim 2, characterized in that: The elastic member (1-5) is a C-shaped clip spring.

4. The high-speed turbine handpiece with high safety according to claim 1, characterized in that: The handpiece neck (1-6) and the front end of the handle (2) are fitted and bonded together; a pit (1-6-1) is provided on the circumference of the handpiece neck (1-6); a depression (2-1) is formed by pressing at a position on the handle (2) corresponding to the pit (1-6-1), and the depression (2-1) is inserted into the pit (1-6-1) to achieve connection and positioning between the handpiece neck (1-6) and the handle (2).

5. The high-speed turbine handpiece with high safety according to claim 4, characterized in that: A concave pit (1-6-1) is provided on the circumference of the machine head neck (1-6), and a corresponding depression (2-1) is formed on the handle (2) to engage with the concave pit.

6. The high-speed turbine handpiece with high safety according to claim 4, characterized in that: A plurality of pits (1-6-1) are evenly distributed on the circumference of the machine head neck (1-6), and a plurality of corresponding depressions (2-1) are formed on the handle (2) to engage with the pits.

7. The high-speed turbine handpiece with high safety according to claim 4, characterized in that: The concave pit (1-6-1) of the machine head neck (1-6) is an annular concave pit along the circumference, and correspondingly, an annular indentation (2-1) corresponding thereto is formed on the handle (2).

8. The high-speed turbine handpiece with high safety according to claim 1, characterized in that: The connection between the handle (2) and the machine head (1) is an elevation connection structure, and the elevation angle a is 93° to 100°.

9. The high-speed turbine handpiece with high safety according to claim 1, characterized in that: The tail portion (3) is provided with a backflow prevention device, which includes a front water pipe seat (3-1), a rear water pipe seat (3-2), a spring (3-3) and a steel ball (3-4). The front water pipe seat (3-1) and the rear water pipe seat (3-2) are fixedly connected and coaxially installed in the shell of the tail portion (3). The rear water pipe seat (3-2) and the shell of the tail portion (3) are sealed by an O-ring (3-5). The front water pipe seat (3-1) and the rear water pipe seat (3-2) are both provided with water holes along the axial direction. A spring (3-3) and a steel ball (3-4) are provided in an inner cavity enclosed by the front (3-1) and rear (3-2) portions of the water pipe seat. The steel ball (3-4) is pressed against an inner port of a water hole at the rear (3-2) portion of the water pipe seat. Two ends of the spring (3-3) are pressed against the steel ball (3-4) and the inner port of a water hole at the front (3-1) portion of the water pipe seat. The outer port of the water hole at the rear (3-2) portion of the water pipe seat is connected to a rear water pipe (3-6), and the outer port of the water hole at the front (3-1) portion of the water pipe seat is connected to an internal water pipe.

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