Base removal tool

Abstract

This invention provides an abutment removal tool. The tool includes a guide sleeve and a rod. The guide sleeve has a guide channel and an operating window located on its side wall. The guide channel communicates with the operating window and forms an opening at the end of the guide sleeve, which is used for being locked in place. The rod is located in the guide channel and can move along it. One end of the rod is located within the operating window and is used to connect to a drive mechanism. The other end of the rod can enter and exit through the opening and has a connecting thread to connect to the abutment. This abutment removal tool, by locking the guide sleeve in place, uses the guide sleeve to constrain the rod, allowing the rod to stably remove the abutment from the implant via the connecting thread, avoiding damage to the implant and patient discomfort. The operating window on the side wall of the guide sleeve allows the drive mechanism to extend and connect to the rod, reducing the space required for surgical movements and coordinating with the patient's locking action to prevent excessive mouth opening.

Description

Technical Field

[0001] This utility model relates to the dental field, specifically to an abutment removal tool. Background Technology

[0002] The abutment is the core component of dental implants, used to connect the implant and the crown. During clinical practice, abutments can fracture due to installation errors or mechanical fatigue, requiring removal from the implant. While techniques typically involve using a removal tool to extract the fractured abutment, this process can be shaky, causing damage to the implant and the fractured abutment, and also leading to patient discomfort. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of this utility model propose a base removal tool.

[0005] The base removal tool of this utility model embodiment includes:

[0006] A guide sleeve is provided with a guide channel and an operation window. The operation window is located on the side wall of the guide sleeve. One end of the guide channel is connected to the operation window, and the other end of the guide channel forms an opening at the end of the guide sleeve. The guide sleeve is used for being engaged and fixed.

[0007] A rod body is disposed in the guide channel and can move along the guide channel. One end of the rod body is located in the operation window and is used to connect to the drive component that drives the rod body to rotate. The other end of the rod body can enter and exit through the opening and is provided with a connecting thread to connect to the base.

[0008] The abutment removal tool of this utility model uses a bite-fixed guide sleeve to confine the rod, allowing the rod to be stably removed from the implant via connecting threads, thus avoiding damage to the implant and preventing patient discomfort. The side wall of the guide sleeve has an operating window for the drive component to extend and connect to the rod, reducing the space required for surgical movements and coordinating with the patient's bite action to prevent excessive mouth opening.

[0009] In some embodiments, the sidewall of the guide sleeve includes an inclined surface that extends axially toward the opening along the guide channel and is inclined in the direction toward the guide channel. The inclined surface is used to abut against the adjacent tooth of the implant. An abutment surface is provided between the opening and the inclined surface, and the abutment surface is used to abut against the implant.

[0010] In some embodiments, the inclined surface is configured as an annular shape around the guide channel.

[0011] In some embodiments, the end face of the guide sleeve facing away from the opening is a plane to abut against the tooth opposite the implant.

[0012] In some embodiments, the outer peripheral surface of the rod body is provided with a protruding neck thread, and the inner peripheral surface of the guide channel is provided with a protruding guide thread. The guide thread is used to engage with the guide thread to guide the rod body to move along the guide channel.

[0013] In some embodiments, both the neck thread and the guide thread are reverse threads.

[0014] In some embodiments, the guide thread is spaced apart from the opening, and the portion of the guide channel between the guide thread and the opening is used to accommodate the base.

[0015] In some embodiments, the neck thread is disposed adjacent to the connecting thread, and the neck thread protrudes relative to the connecting thread.

[0016] In some embodiments, the other end of the rod is configured as a tapered shape with a decreasing cross-section in the direction away from one end of the rod, and is provided with the connecting thread.

[0017] In some embodiments, a drive member is also included, which is accessible from the operating window and detachably connected to one end of the rod. When the drive member is located within the operating window, the operating window engages the drive member along the axial direction of the guide channel. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the base removal tool according to an embodiment of the present invention in use;

[0019] Figure 2 This is a cross-sectional view of the base removal tool according to an embodiment of the present invention in use;

[0020] Figure 3 yes Figure 2 An enlarged schematic diagram of part A in the middle;

[0021] Figure 4 This is a cross-sectional view of the guide sleeve of the base removal tool according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the rod body according to an embodiment of the present invention.

[0023] Figure label:

[0024] 1. Guide sleeve; 11. Guide channel; 12. Operating window; 13. Opening; 14. Inclined surface; 15. Abutment surface; 16. Guide thread; 2. Rod body; 21. Connecting thread; 22. Neck thread; 3. Abutment; 4. Implant. Detailed Implementation

[0025] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0026] The following is for reference. Figures 1-5 Describes a base removal tool according to an embodiment of the present invention.

[0027] like Figures 1-5 As shown, the base removal tool of this utility model embodiment includes a guide sleeve 1 and a rod body 2.

[0028] The guide sleeve 1 is provided with a guide channel 11 and an operation window 12. The operation window 12 is located on the side wall of the guide sleeve 1. One end of the guide channel 11 is connected to the operation window 12. The other end of the guide channel 11 forms an opening 13 at the end of the guide sleeve 1. The guide sleeve 1 is used to be engaged and fixed.

[0029] like Figures 1-5 As shown, the guide sleeve 1 is arranged in a vertical direction. The guide sleeve 1 has a groove on its side wall in the horizontal direction to form an operation window 12. The guide sleeve 1 has a guide channel 11 extending in the vertical direction inside. The top end of the guide channel 11 is connected to the operation window 12. The bottom end of the guide channel 11 forms an opening 13 on the bottom surface of the guide sleeve 1.

[0030] The rod 2 is located in the guide channel 11 and can move along the guide channel 11. One end of the rod 2 is located in the operation window 12 and is used to connect the drive component (not shown in the figure) that drives the rod 2 to rotate. The other end of the rod 2 can enter and exit through the opening 13 and is provided with a connecting thread 21 to connect to the base 3.

[0031] like Figures 1-5 As shown, the rod 2 is vertically inserted into the guide channel 11 and is movable along the guide channel. The top end of the rod 2 is located within the operating window 12 and is provided with a connecting hole or connecting groove for connecting with the driving component, so that the driving component can connect to the top end of the rod 2, thereby driving the rod 2 to rotate around its axis. The driving component is preferably, but not limited to, a handheld device such as a wrench or drill chuck. The bottom end of the rod 2 can enter and exit the opening 13, and the bottom end of the rod 2 is provided with a connecting thread 21.

[0032] When using the abutment removal tool, the surgeon inserts the guide sleeve 1 and the rod 2 into the patient's mouth, aligning the bottom end of the guide sleeve 1 with the opening 13 opposite the implant 4. Specifically, if the implant 4 is located in the mandible, the bottom end of the guide sleeve 1 is positioned downwards and towards the implant 4; if the implant 4 is located in the maxilla, the guide sleeve 1 needs to be inverted so that the bottom end of the guide sleeve 1 is positioned upwards and towards the implant 4. The patient then needs to bite down on the guide sleeve 1 to fix its position and prevent it from shifting during the procedure. At this time, the groove of the abutment 3 on the implant 4 communicates with the opening 13.

[0033] The drive unit extends into the operating window 12 and connects to the top of the rod 2. The drive unit drives the rod 2 to rotate, and preferably, but not limited to, moving the drive unit and the rod 2 toward the implant 4 by hand, so that the bottom end of the rod 2 protrudes from the opening 13 and connects to the abutment 3 inside the implant 4 through the connecting thread 21. After the rod 2 is connected to the abutment 3, and preferably, but not limited to, moving the drive unit and the rod 2 away from the implant 4 by hand, while the drive unit still drives the rod 2 to rotate, so that the rod 2 pulls the abutment 3 out of the implant 4. Since the guide sleeve 1 has been engaged and fixed, and the rod 2 is limited by the guide channel 11, the abutment 3 can be stably removed.

[0034] It should be noted that the abutment 3 connected to the rod 2 and removed from the implant 4 can be a broken abutment 3 or an intact abutment 3.

[0035] It should be noted that the rod 2 can be configured to always be located within the guide channel 11 of the guide sleeve 1, or the rod 2 can be configured to be detachably connected to the guide sleeve 1. When the rod 2 is detachably connected to the guide sleeve 1, the rod 2 is preferably, but not limited to, inserted into the guide channel 11 through the operating window 12. Thus, during the process of the doctor placing the guide sleeve 1 and the rod 2 into the patient's oral cavity, the doctor can either place the guide sleeve 1 with the rod 2 inside the guide channel 11 into the patient's oral cavity, or first place the guide sleeve 1 into the patient's oral cavity and have it bitten and fixed in place by the patient, and then place the rod 2 into the patient's oral cavity and insert it into the guide channel 11 through the operating window 12.

[0036] The abutment removal tool of this utility model uses a bite-fixed guide sleeve 1 to restrict the rod 2, allowing the rod 2 to stably remove the abutment 3 from the implant 4 via the connecting thread 21, avoiding damage to the implant 4 and preventing patient discomfort. The side wall of the guide sleeve 1 is provided with an operation window 12 for the drive component to extend and connect to the rod 2, reducing the space required for surgical operations and coordinating with the patient's bite-fixed action of the guide sleeve 1, thereby preventing the patient from opening their mouth excessively.

[0037] In some embodiments, the sidewall of the guide sleeve 1 includes an inclined surface 14, which extends toward the opening 13 along the axial direction of the guide channel 11 and is inclined in the direction toward the guide channel 11. The inclined surface 14 is used to abut against the adjacent tooth of the implant 4. An abutment surface 15 is provided between the opening 13 and the inclined surface 14, which is used to abut against the implant 4.

[0038] like Figures 1-4 As shown, the guide sleeve 1 includes an upper section and a lower section. The upper section is provided with an operation window 12, and the lower section is provided with a guide channel 11. At least one side wall of the lower section in the horizontal direction is an inclined surface 14. The inclined surface 14 extends in the direction from top to bottom and is inclined in the direction toward the guide channel 11. The cross-section of the lower section decreases in the direction from top to bottom.

[0039] An abutment surface 15 is provided between the opening 13 and the inclined surface 14. In other words, the bottom surface of the guide sleeve 1 is provided with an opening 13, and the inclined surface 14 extends downward to the bottom surface of the guide sleeve 1. The part of the bottom surface of the guide sleeve 1 between the opening 13 and the inclined surface 14 forms the abutment surface 15.

[0040] Inclined surface 14 is used to abut against the adjacent tooth of implant 4, and abutment surface 15 is used to abut against implant 4.

[0041] When the patient bites on the guide sleeve 1, the bottom end of the guide sleeve 1 can be fixed by abutting against the adjacent tooth of the implant 4 via the inclined surface 14, or by abutting against the implant 4 via the contact surface 15. This prevents the bottom end of the guide sleeve 1 from shifting during the procedure.

[0042] It should be noted that when the patient bites on the guide sleeve 1, the inclined surface 14, in addition to abutting against the adjacent teeth of the implant 4, also serves to prevent the guide sleeve 1 from interfering with the adjacent teeth of the implant 4, so as to prevent the bottom end of the guide sleeve 1 from not being installed in place.

[0043] In some embodiments, the inclined surface 14 is configured as an annulus around the guide channel 11.

[0044] like Figure 1 , Figure 2 and Figure 4 As shown, the inclined surface 14 is set as a ring around the vertical direction, which can be a polygonal ring, an elliptical ring, a circular ring, etc., preferably a circular ring. In other words, the cross-section of the lower part of the guide sleeve 1 is circular, and the outer peripheral surface of the lower part of the guide sleeve 1 is the inclined surface 14.

[0045] This makes it easier to place the guide sleeve 1 at the implant 4 without adjusting the guide sleeve 1 according to the relative position of the inclined surface 14 and the adjacent teeth of the implant 4, thus improving the ease of use of the abutment removal tool.

[0046] It is understood that the inclined surface 14 is not limited to being annular; in other embodiments, the inclined surface 14 is configured as two that are symmetrical about the center of the guide channel 11.

[0047] In some embodiments, the end face of the guide sleeve 1 facing away from the opening 13 is a plane to abut against the tooth opposite to the implant 4.

[0048] like Figure 1 and Figure 2 As shown, the top surface of the guide sleeve 1 is a flat surface, which is used to abut against the tooth opposite to the implant 4. Specifically, if the implant 4 is located in the mandible, the top surface of the guide sleeve 1 is set upward and abuts against the tooth above the implant 4. If the implant 4 is located in the maxilla, the guide sleeve 1 needs to be inverted, and the top surface of the guide sleeve 1 is set downward and abuts against the tooth below the implant 4.

[0049] When the patient bites on the guide sleeve 1, the tip of the guide sleeve 1 is fixed by abutting against the tooth opposite the implant 4, thereby preventing the tip of the guide sleeve 1 from moving during the operation.

[0050] In some embodiments, the outer peripheral surface of the rod body 2 is provided with a protruding neck thread 22, and the inner peripheral surface of the guide channel 11 is provided with a protruding guide thread 16. The guide thread 16 is used to engage with the guide thread 16 to guide the rod body 2 to move along the guide channel 11.

[0051] like Figures 2-5 As shown, the outer circumferential surface of the rod 2 is provided with a protruding neck thread 22. The neck thread 22 can be configured as multiple segments arranged at intervals along the circumference of the rod 2, or as a ring extending along the circumference of the rod 2, preferably a ring.

[0052] The inner circumferential surface of the guide channel 11 is provided with a protruding guide thread 16. The guide thread 16 can be configured as multiple segments arranged at intervals along the circumference of the guide channel 11, or it can be configured as a ring extending along the circumference of the guide channel 11, preferably a ring.

[0053] The guide thread 16 engages with the base 3 at least during the process of the connecting thread 21 being screwed into the base 3 and during the process of the rod 2 moving the base 3 to be removed from the implant 4, so as to guide the rod 2 to move smoothly and thus ensure the stability of the rod 2 when connecting to the base 3 and when removing the base 3.

[0054] In some embodiments, both the neck thread 22 and the guide thread 16 are reverse threads. In other words, both the neck thread 22 and the guide thread 16 are left-hand threads.

[0055] During the process of the rod 2 moving the abutment 3 to remove the abutment 3 from the implant 4, the guide thread 16 engages with the neck thread 22 and applies an upward force to the neck thread 22. In other words, the guide thread 16 applies a force to the neck thread 22 in the same direction as the movement of the rod 2. This assists the rod 2 in moving upward and removing the abutment 3, so that the abutment 3 can be detached from the implant 4.

[0056] In some embodiments, the guide thread 16 and the opening 13 are spaced apart, and the portion of the guide channel 11 between the guide thread 16 and the opening 13 is used to accommodate the base 3.

[0057] like Figure 2 , Figure 4 and Figure 5 As shown, the guide thread 16 is located in the middle of the guide channel 11 in the vertical direction. There is a certain distance between the guide thread 16 and the opening 13. Preferably, the distance between the guide thread 16 and the opening 13 is greater than the length of the neck thread 22 in the vertical direction and greater than the length of the base 3 in the vertical direction. The diameter of the guide channel 11 is greater than the diameter of the removed base 3.

[0058] When the connecting thread 21 is screwed into the abutment 3 and the connection is completed, the neck thread 22 moves downward to be located between the guide thread 16 and the opening 13 so that when the rod 2 drives the abutment 3 to detach from the implant 4, the neck thread 22 can move upward and completely pass through the guide thread 16, thereby ensuring that the guide thread 16 continues to provide assistance to the rod 2 when the abutment 3 is removed from the implant 4, so as to facilitate the removal of the abutment 3.

[0059] When the rod 2 moves the abutment 3 upward through the connecting thread 21, the abutment 3 enters the guide channel 11 through the opening. When the abutment 3 is completely removed from the implant 4, the abutment 3 is completely located in the guide channel 11. Then the connected guide sleeve 1, rod 2 and abutment 3 are removed from the patient's mouth, and the guide channel 11 is used to prevent the abutment 3 from falling into the patient's mouth and causing medical accidents.

[0060] In some embodiments, the neck thread 22 is disposed adjacent to the connecting thread 21, and the neck thread 22 protrudes relative to the connecting thread 21.

[0061] like Figure 5 As shown, the neck thread 22 and the connecting thread 21 are arranged sequentially and adjacently from top to bottom. The diameter of the neck thread 22 is larger than the diameter of the connecting thread 21, so as to form a step between the neck thread 22 and the connecting thread 21.

[0062] When the connecting thread 21 is fully screwed into the abutment 3, the bottom of the neck thread 22 abuts against the abutment 3, indicating that the connecting thread 21 and the abutment 3 are connected. Then the rod 2 stops moving downward and moves upward to remove the abutment 3 from the implant 4.

[0063] In some embodiments, the other end of the rod 2 is configured as a tapered shape with a decreasing cross-section in the direction away from the end of the rod 2, and is provided with a connecting thread 21.

[0064] like Figure 3 and Figure 5 As shown, the bottom end of the rod 2 is set as a cone, and the cross-section of the cone bottom end of the rod 2 decreases from top to bottom. The outer circumferential surface of the cone bottom end of the rod 2 is provided with a connecting thread 21.

[0065] The base 3 may have a threaded hole, and the bottom end of the rod 2 may be tapered to facilitate entry into the threaded hole of the base 3. The base 3 may also be closed, in which case the tapered bottom end of the rod 2 forms a tip to facilitate the screwing of the connecting thread 21 into the base 3.

[0066] In some embodiments, a drive member is also included, which can enter and exit the operation window 12 and is detachably connected to one end of the rod 2. When the drive member is located inside the operation window 12, the operation window 12 locks the drive member along the axial direction of the guide channel 11.

[0067] like Figure 1 , Figure 2 and Figure 4 As shown, the drive component can enter and exit the operation window 12 and can be detachably connected to the top of the rod 2 within the operation window 12. When the drive component is located within the operation window 12, it is locked between the top and bottom surfaces of the operation window 12 to limit the drive component in the vertical direction, preventing the drive component from moving and affecting the stability of the guide sleeve 1. At the same time, it facilitates the positioning and connection of the drive component with the top of the rod 2.

[0068] At this time, the driving component can drive the rod 2 to move in the vertical direction and drive the rod 2 to rotate.

[0069] Preferably, the operation window 12 surrounds the top of the rod 2 to facilitate the connection of the drive component to the top of the rod 2.

[0070] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0071] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0072] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0073] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0074] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An abutment extraction tool, characterized in that, include: A guide sleeve (1) is provided with a guide channel (11) and an operation window (12). The operation window (12) is located on the side wall of the guide sleeve (1). One end of the guide channel (11) is connected to the operation window (12). The other end of the guide channel (11) forms an opening (13) at the end of the guide sleeve (1). The guide sleeve (1) is used to be engaged and fixed. A rod (2) is located in the guide channel (11) and can move along the guide channel (11). One end of the rod (2) is located in the operation window (12) and is used to connect to the drive unit that drives the rod (2) to rotate. The other end of the rod (2) can enter and exit through the opening (13) and is provided with a connecting thread (21) to connect to the base (3).

2. The abutment removal tool according to claim 1, characterized in that The sidewall of the guide sleeve (1) includes an inclined surface (14), which extends along the axial direction of the guide channel (11) toward the opening (13) and is inclined in the direction toward the guide channel (11). The inclined surface (14) is used to abut against the adjacent tooth of the implant (4). An abutment surface (15) is provided between the opening (13) and the inclined surface (14), which is used to abut against the implant (4).

3. The abutment removal tool according to claim 2, characterized in that The inclined surface (14) is configured as an annular ring around the guide channel (11).

4. The abutment removal tool according to claim 1, characterized in that The end face of the guide sleeve (1) facing away from the opening (13) is a plane, so as to abut against the tooth opposite to the implant (4).

5. The abutment removal tool according to claim 1, wherein The outer circumferential surface of the rod (2) is provided with a protruding neck thread (22), and the inner circumferential surface of the guide channel (11) is provided with a protruding guide thread (16). The guide thread (16) is used to engage with the guide thread (16) to guide the rod (2) to move along the guide channel (11).

6. The abutment removal tool according to claim 5, characterized in that Both the neck thread (22) and the guide thread (16) are reverse threads.

7. The abutment removal tool according to claim 5, wherein The guide thread (16) is spaced apart from the opening (13), and the portion of the guide channel (11) between the guide thread (16) and the opening (13) is used to accommodate the base (3).

8. The abutment removal tool according to claim 5, wherein Therefore, the neck thread (22) is arranged adjacent to the connecting thread (21), and the neck thread (22) protrudes relative to the connecting thread (21).

9. The base removal tool according to claim 1, characterized in that, The other end of the rod (2) is configured as a tapered shape with a decreasing cross-section along the direction away from the end of the rod (2), and is provided with the connecting thread (21).

10. The abutment removal tool according to claim 1, wherein It also includes a drive unit that can enter and exit the operation window (12) and is detachably connected to one end of the rod (2). When the drive unit is located inside the operation window (12), the operation window (12) locks the drive unit along the axial direction of the guide channel (11).

Images