Auxiliary tool for implant denture

Abstract

The present invention discloses an auxiliary tool for implant dentures, belonging to the field of oral implant technology. The auxiliary tool for implant dentures comprises a fixed scanning rod and a movable scanning rod parallel to each other, the lower end of the fixed scanning rod is provided with a fixed scanning head, the lower end of the movable scanning rod is provided with a movable scanning head, the auxiliary tool for implant dentures also comprises: a fixed rod, one end of which is connected to the fixed scanning rod; a movable rod, one end of which is connected to the movable scanning rod and the other end is hinged to the other end of the fixed rod; an elastic telescopic component, one end of which is connected to the fixed rod and the other end is connected to the movable rod, the elastic telescopic component is used to push the fixed rod and the movable rod away from each other. The auxiliary tool for implant dentures can make the fixed scanning head and the movable scanning head maintain a relatively stable positional relationship, the implant shape produced by the scanning information has a smaller error with the internal contour of the alveolar, the success rate of implant implantation is improved, and the tooth restoration is more beautiful.

Description

Technical Field

[0001] The present invention relates to the technical field of oral implantation, and in particular to an auxiliary tool for implanting dentures. Background Art

[0002] With the continuous development of oral implant technology, implant denture restoration has become a widely used method of tooth restoration. However, in the process of superstructure restoration after implant placement, how to accurately transfer the position and direction of the implant to the virtual model in order to design a personalized implant base or full crown has always been a technical difficulty.

[0003] Traditional methods often rely on the doctor's experience and manual operation. For example, an implant intraoral scanning rod assembly with publication number CN211156384U requires the doctor to insert the scanning head into the tooth socket on the patient's gums and scan the internal contour of the tooth socket with the scanning head to obtain the contour information and angle information of the tooth socket. The doctor makes the corresponding implant based on the obtained data, and then implants the implant into the corresponding tooth socket to finally achieve tooth restoration. However, during the above scanning process, since the doctor holds the scanning head and suspends the scanning head in the tooth socket, the scanning information is easily inaccurate due to the shaking of the doctor's hand during the scanning process, which ultimately results in a large error between the shape of the manufactured implant and the internal contour of the tooth socket, which may cause implant failure or unsightly tooth restoration. Summary of the invention

[0004] The purpose of the present invention is to overcome the problems in the prior art and provide an auxiliary tool for implant dentures, which can maintain a relatively stable positional relationship between a fixed scanning head and a mobile scanning head, thereby avoiding the problem of inaccurate scanning information caused by hand shaking when holding the scanning head barehanded. The implant shape produced by the scanning information has a smaller error with the internal contour of the alveolar, thereby improving the success rate of implant placement and making the tooth restoration more beautiful.

[0005] The present invention provides an auxiliary tool for implant dentures, including a fixed scanning rod and a movable scanning rod parallel to each other, wherein a fixed scanning head is arranged at the lower end of the fixed scanning rod, and a movable scanning head is arranged at the lower end of the movable scanning rod. The auxiliary tool for implant dentures also includes: a fixed rod, one end of which is connected to the fixed scanning rod; a movable rod, one end of which is connected to the movable scanning rod and the other end is hinged to the other end of the fixed rod; an elastic telescopic component, one end of which is connected to the fixed rod and the other end is connected to the movable rod, and the elastic telescopic component is used to push the fixed rod and the movable rod away from each other.

[0006] Preferably, the ends of the fixed rod and the movable rod that are close to each other are rotatably connected via a hinge axis, the hinge axis is parallel to the length direction of the fixed scanning rod, and the two ends of the elastic telescopic component are movably connected to the fixed rod and the movable rod respectively.

[0007] Preferably, the ends of the fixed rod and the movable rod that are close to each other are connected by a universal ball, and connecting rings are provided on the same side of the fixed rod and the movable rod, and the two connecting rings are respectively hooked with a hook ring, and the two hook rings are fixedly arranged at both ends of the elastic telescopic component.

[0008] Preferably, the elastic telescopic component includes: a sleeve, the end of which is fixedly connected to a hook ring; a spring, which is arranged in the sleeve, and one end of the spring is abutted against the bottom of the sleeve; a sliding rod, one end of which is fixedly connected to a hook ring, and the other end is slidably arranged in the sleeve and connected to the other end of the spring.

[0009] Preferably, the fixed scanning rod and the fixed scanning head are connected via a first connecting portion, which includes: a first disc-shaped member, whose two surfaces have slots for respectively clamping the fixed scanning rod and the fixed scanning head, and the side of the first disc-shaped member has an annular groove; a circular ring, rotatably disposed in the annular groove, and the circular ring is fixedly connected to the end of the fixed rod.

[0010] Preferably, the first disc-shaped member has a through hole passing through its two surfaces, the fixed scanning rod has a first countersunk hole, the same first screw is passed through the through hole and the first countersunk hole, and the end of the first screw is threadedly connected to the threaded hole on the fixed scanning head, so as to connect the fixed scanning rod, the first disc-shaped member and the fixed scanning head.

[0011] Preferably, the movable scanning rod and the movable scanning head are connected via a second connecting portion, and the second connecting portion comprises: a second disc-shaped member, both surfaces of which have bosses, and surfaces of the movable scanning rod and the movable scanning head that are close to each other are respectively provided with grooves that are clamped and rotatably connected to the bosses, and the side wall of the second disc-shaped member is fixedly connected to the end of the movable rod.

[0012] Preferably, the middle portion of the second disk-shaped member has a limiting hole that passes through the two bosses, and the movable scanning rod has a second countersunk hole. A second screw is passed through both the second countersunk hole and the limiting hole. The end of the second screw is threadedly connected to the threaded hole on the movable scanning head, so as to connect the movable scanning rod, the second disk-shaped member and the movable scanning head.

[0013] Preferably, the outer diameter of the movable scanning rod is the same as the outer diameter of the second disc-shaped member, and the outer periphery of the movable scanning rod is provided with an annular capsule for reducing the squeezing of the inner wall of the alveolar socket.

[0014] Preferably, the annular capsule is C-shaped, the annular capsule is slidably connected to the outer wall of the scanning rod, and a plurality of elastic ribs are arranged in the capsule wall of the annular capsule close to the scanning rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects: When the auxiliary tool for implant denture is used, the fixed scanning head and the movable scanning head are simultaneously located in different tooth sockets in the oral cavity, and due to the supporting effect of the elastic telescopic component, the fixed scanning head and the movable scanning head can maintain a relatively stable positional relationship and always abut the inner wall of the corresponding tooth socket, thereby avoiding the problem of inaccurate scanning information caused by hand shaking when holding the scanning head barehanded, and the obtained scanning information has a higher degree of matching with the actual internal contours of the two tooth sockets, and the implant shape made by the scanning information has a smaller error with the internal contour of the tooth socket, thereby improving the success rate of implant placement and making the tooth restoration more beautiful; In an ideal state, each tooth socket has a central axis. When the central axes of two tooth sockets are parallel to each other, the fixed rod and the movable rod hinged by the hinge shaft can ensure that the central axes of the fixed scanning head and the movable scanning head are parallel to each other. The central axis of the fixed scanning head or the movable scanning head is parallel to the central axis of the tooth socket, which can ensure the accuracy of the scanning information of the tooth socket. The fixed rod and the mobile rod are connected by a universal ball. When the elastic telescopic component opens the fixed rod and the mobile rod, the fixed scanning head and the mobile scanning head can adaptively deflect in the tooth socket, so that the center lines of the fixed scanning head and the mobile scanning head are in an inner or outer figure eight shape or parallel to each other in space, further making the center lines of the fixed scanning head and the mobile scanning head more coincident with the center line of the tooth socket, thereby improving the scanning accuracy. This avoids the problem of increased difficulty in scanning the internal contour of the tooth socket due to the large differences between the two tooth sockets in reality, such as the central axes of the two tooth sockets are in an inner or outer figure eight shape, or even parallel to each other in space. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A perspective view of the present invention; Figure 2 It is a front view of the present invention; Figure 3 for Figure 1 Sectional view at AA in the middle; Figure 4 for Figure 1 Sectional view at the middle BB; Figure 5 for Figure 2 Sectional view at CC; Figure 6 for Figure 5 A partial enlarged view of point D in the middle; Figure 7 is a schematic diagram of an elastic telescopic component of the present invention; Figure 8 for Figure 7 A cross-sectional view of Fig. 9 is a schematic diagram of a first connecting portion of the present invention; Fig.10 for Fig. 9 Sectional view at EE; Fig.11 is a schematic diagram of a second disc-shaped member of the present invention; Fig.12 for Fig.11 Cross-sectional view at FF; Fig.13 for Figure 4 A partial enlarged view of the G in the middle; Fig.14 It is a first modeling schematic diagram of the present invention; Fig.15 This is a second modeling schematic diagram of the present invention.

[0017] Description of reference numerals: 1. Fixed scanning rod, 2. Mobile scanning rod, 3. Fixed scanning head, 4. Mobile scanning head, 5. Fixed rod, 6. Mobile rod, 7. Elastic telescopic component, 8. Universal ball, 9. Connecting ring, 10. Hook ring, 11. Sleeve, 11-1. Slide rod, 12. Spring, 13. First connecting part, 14. First disc-shaped part, 15. Slot, 16. Annular groove, 17. Ring, 18. Through hole, 19. Second connecting part, 20. Second disc-shaped part, 21. Boss, 22. Limiting hole, 23. Annular capsule, 24. Elastic rib. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the present invention belongs. "Include" or "comprises" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Inside", "outside", "upper", "lower", "far", "near", "front", "back", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0020] The drawings in the present invention are not drawn strictly according to the actual scale, and the specific size and quantity of each structure can be determined according to actual needs. The drawings described in the present invention are only schematic diagrams of the structures.

[0021] The invention provides an auxiliary tool for implant dentures. Figure 1-2 and Figure 14-15 It includes a fixed scanning rod 1 and a movable scanning rod 2 which are parallel to each other, a fixed scanning head 3 is arranged at the lower end of the fixed scanning rod 1, and a movable scanning head 4 is arranged at the lower end of the movable scanning rod 2. It is characterized in that the auxiliary tool for implant denture also includes: a fixed rod 5, one end of which is connected to the fixed scanning rod 1; a movable rod 6, one end of which is connected to the movable scanning rod 2, and the other end is hinged to the other end of the fixed rod 5; an elastic telescopic component 7, one end of which is connected to the fixed rod 5, and the other end is connected to the movable rod 6, and the elastic telescopic component 7 is used to push the fixed rod 5 and the movable rod 6 away from each other.

[0022] The fixed scanning rod 1, the mobile scanning rod 2, the fixed scanning head 3 and the mobile scanning head 4 are all existing products and technologies, such as the intraoral special scanning rod of the Mendentes brand, which has a scanning rod body and a scanning head, and another example is the scanning rod of the Ochitech four-in-one series, specifically the Ochitech mini4030 specification, the length of the fixed rod 5 and the mobile rod 6 are both 1.2 cm. When the auxiliary tool for implant denture is used, firstly, according to the actual distance between the two alveoli, the fixed rod 5 and the mobile rod 6 are manually squeezed so that the fixed rod 5 and the mobile rod 6 are close to each other, and further the elastic telescopic group The component 7 is appropriately compressed; then the fixed scanning head 3 is placed in one tooth socket, and the length of the elastic telescopic component 7 is appropriately adjusted to place the mobile scanning head 4 in the other tooth socket; then release your hand, and the elastic telescopic component 7 naturally resets and stretches, so that the fixed scanning head 3 and the mobile scanning head 4 respectively abut against the inner walls of the corresponding tooth sockets, so that the fixed scanning head 3 and the mobile scanning head 4 can maintain a relatively stable positional relationship; finally, the fixed scanning head 3 and the mobile scanning head 4 scan the internal contours of the two tooth sockets respectively. After the scanning is completed, the fixed rod 5 and the mobile rod 6 can be manually removed.

[0023] When the auxiliary tool for implant dentures is in use, the fixed scanning head 3 and the movable scanning head 4 are simultaneously located in different tooth sockets in the oral cavity, and due to the supporting effect of the elastic telescopic component 7, the fixed scanning head 3 and the movable scanning head 4 can maintain a relatively stable positional relationship, thereby avoiding the problem of inaccurate scanning information caused by hand shaking when holding the scanning head barehanded. The obtained scanning information has a higher degree of fit with the actual internal contours of the two tooth sockets, and the implant shape produced by the scanning information has a smaller error with the internal contour of the tooth socket, thereby improving the success rate of implant placement and making the tooth restoration more beautiful.

[0024] In this embodiment, the ends of the fixed rod 5 and the movable rod 6 that are close to each other are rotatably connected via a hinge axis, the hinge axis is parallel to the length direction of the fixed scanning rod 1, and the two ends of the elastic telescopic component 7 are respectively movably connected to the fixed rod 5 and the movable rod 6.

[0025] Under ideal conditions, each alveolar has a central axis. When the central axes of two alveoli are parallel to each other, the fixed rod 5 and the movable rod 6 hinged by the hinge axis can ensure that the central axes of the fixed scanning head 3 and the movable scanning head 4 are parallel to each other. Mainly, by making the central axis of the fixed scanning head 3 or the movable scanning head 4 parallel to the central axis of the alveolar, the accuracy of the scanning information of the alveolar can be guaranteed.

[0026] In this embodiment, Figure 1-7 The ends of the fixed rod 5 and the movable rod 6 that are close to each other are connected by a universal ball 8. A connecting ring 9 is provided on the same side of the fixed rod 5 and the movable rod 6. The two connecting rings 9 are respectively hooked with a hook ring 10. The two hook rings 10 are fixedly arranged at both ends of the elastic telescopic component 7.

[0027] However, in reality, the two alveoli are quite different. For example, the central axes of the two alveoli are in an inner-to-outer-to-outer-shape, or even worse, they are parallel to each other in space, which further increases the difficulty of scanning the internal contour of the alveoli. Therefore, the above structure is designed, and the fixed rod 5 and the movable rod 6 are connected by a universal ball 8. When the elastic telescopic component 7 opens the fixed rod 5 and the movable rod 6, the fixed scanning head 3 and the movable scanning head 4 can adaptively deflect in the alveoli, so that the center lines of the fixed scanning head 3 and the movable scanning head 4 are in an inner-to-outer-to-iner-shape or an outer-to-outer-shape, or are parallel to each other in space, which further makes the center lines of the fixed scanning head 3 and the movable scanning head 4 more coincident with the center line of the alveoli, thereby improving the scanning accuracy.

[0028] Among them, there is a hooking relationship between the connecting ring 9 and the hook ring 10, so there is a sufficient gap between the corresponding connecting ring 9 and the hook ring 10. When the fixed rod 5 and the movable rod 6 rotate adaptively, it can still ensure that the two ends of the elastic telescopic component 7 are stretched open and push the two connecting rings 9 away from each other, so that the fixed scanning head 3 and the movable scanning head 4 can still adaptively approach the inner wall of the corresponding alveolar socket, further improving the scanning accuracy.

[0029] The universal ball 8 comprises a spherical shell and a spherical body. The spherical shell is fixedly connected to the end of the movable rod 6 , and the spherical body is fixedly connected to the end of the fixed rod 5 .

[0030] In this embodiment, Figure 6-8The elastic telescopic component 7 includes: a sleeve 11, the end of which is fixedly connected to a hook ring 10; a spring 12, which is arranged in the sleeve 11, and one end of the spring 12 is abutted against the bottom of the sleeve 11; a sliding rod 11-1, one end of which is fixedly connected to the hook ring 10, and the other end is slidably arranged in the sleeve 11 and connected to the other end of the spring 12.

[0031] The spring 12 is always in a compressed state, so the spring 12 can push the sleeve 11 and the slide rod 11-1 away from each other. In the natural extension state, the elastic telescopic component 7 is reset and is in the maximum extension state. At this time, the distance between the sleeve 11 and the slide rod 11-1 is the farthest.

[0032] In this embodiment, Figure 3 and Figure 9-10 The fixed scanning rod 1 and the fixed scanning head 3 are connected via a first connecting portion 13, which includes: a first disc-shaped member 14, whose two surfaces have slots 15 for respectively clamping the fixed scanning rod 1 and the fixed scanning head 3, and the side of the first disc-shaped member 14 has an annular groove 16; a circular ring 17, which is rotatably arranged in the annular groove 16, and the circular ring 17 is fixedly connected to the end of the fixed rod 5.

[0033] The upper and lower slots 15 of the first disc-shaped member 14 are used to clamp the fixed scanning rod 1 and the fixed scanning head 3 respectively. When the fixed scanning rod 1 and the mobile scanning rod 2 are manually squeezed, the fixedly connected fixed rod 5 and the mobile rod 6 will drive the fixed scanning rod 1 and the fixed scanning head 3, the mobile scanning rod 2 and the mobile scanning head 4 to rotate relative to each other. The rotated fixed scanning head 3 not only changes the scanning angle, but also rubs the inner wall of the alveolar, causing secondary damage to the inner wall of the alveolar. Therefore, the above structure is designed. When the fixed scanning rod 1 and the mobile scanning rod 2 are manually squeezed, the fixed rod 5 drives the ring 17 to rotate around the first disc-shaped member 14, thereby avoiding the problem of rotation of the fixed scanning head 3 and ensuring the scanning accuracy and the problem of rubbing the inner wall of the alveolar.

[0034] In this embodiment, Fig.10 The first disc-shaped member 14 has a through hole 18 penetrating through its two surfaces, and the fixed scanning rod 1 has a first countersunk hole. The same first screw is passed through the through hole 18 and the first countersunk hole, and the end of the first screw is threadedly connected to the threaded hole on the fixed scanning head 3, so as to connect the fixed scanning rod 1, the first disc-shaped member 14 and the fixed scanning head 3.

[0035] The first screw rod cooperates with the threaded hole on the fixed scanning head 3 to prevent the fixed scanning rod 1, the first disc-shaped member 14 and the fixed scanning head 3 from being separated from each other.

[0036] In this embodiment, Figure 4 and Figure 11-12The movable scanning rod 2 and the movable scanning head 4 are connected via a second connecting portion 19, and the second connecting portion 19 comprises: a second disc-shaped member 20, both surfaces of which have bosses 21, and surfaces of the movable scanning rod 2 and the movable scanning head 4 which are close to each other are respectively provided with grooves which are snap-fitted and rotatably connected to the bosses 21, and the side wall of the second disc-shaped member 20 is fixedly connected to the end of the movable rod 6.

[0037] The upper and lower bosses 21 of the second disc-shaped member 20 are respectively used for clamping and rotationally connecting the movable scanning rod 2 and the movable scanning head 4. When the fixed scanning rod 1 and the movable scanning rod 2 are manually squeezed, the fixedly connected fixed rod 5 and the movable rod 6 will drive the fixed scanning rod 1 and the fixed scanning head 3, the movable scanning rod 2 and the movable scanning head 4 to rotate relative to each other. The rotated movable scanning head 4 not only changes the scanning angle, but also rubs against the inner wall of the alveolar, causing secondary damage to the inner wall of the alveolar. Therefore, the above structure is designed. When the fixed scanning rod 1 and the movable scanning rod 2 are manually squeezed, the movable rod 6 drives the second disc-shaped member 20 to rotate around the movable scanning head 4, thereby avoiding the problem of rotation of the movable scanning head 4 and ensuring the scanning accuracy and the problem of rubbing against the inner wall of the alveolar.

[0038] In this embodiment, Fig.12 The middle part of the second disc-shaped member 20 has a limiting hole 22 that passes through the two bosses 21, and the movable scanning rod 2 has a second countersunk hole. A second screw is passed through the second countersunk hole and the limiting hole 22 at the same time, and the end of the second screw is threadedly connected to the threaded hole on the movable scanning head 4, so as to connect the movable scanning rod 2, the second disc-shaped member 20 and the movable scanning head 4.

[0039] The cooperation between the second screw rod and the threaded hole on the movable scanning head 4 can prevent the movable scanning rod 2, the second disc-shaped member 20 and the movable scanning head 4 from being separated from each other.

[0040] In this embodiment, Figure 4 and Fig.13 The outer diameter of the movable scanning rod 2 is the same as the outer diameter of the second disc-shaped member 20, and an annular capsule 23 is provided on the outer periphery of the movable scanning rod 2 to reduce the squeezing of the inner wall of the alveolar socket; the annular capsule 23 is C-shaped, and the annular capsule 23 is slidably connected to the outer wall of the scanning rod 2, and a plurality of elastic ribs 24 are provided in the capsule wall of the annular capsule 23 close to the scanning rod 2.

[0041] The elastic ribs 24 are C-shaped elastic metal strips or elastic bands embedded in the inner wall of the annular capsule 23. The interior of the annular capsule 23 is filled with fluid, which includes water and air. The annular capsule 23 can prevent the moving scanning head 4 from excessively squeezing the inner wall of the alveolar socket. Multiple elastic ribs 24 can enable the C-shaped annular capsule 23 to have a certain force to wrap around the outside of the moving scanning rod 2 or the second disc-shaped member 20, and can prevent the annular capsule 23 from moving freely on the moving scanning rod 2 or the second disc-shaped member 20. Due to the different actual alveolar depths and contour shapes, the annular capsule 23 can be manually moved upward or downward so that the annular capsule 23 is in a suitable position in the alveolar socket.

[0042] The method of using an auxiliary tool for implant dentures of the present invention is as follows: First, according to the actual distance between the two alveoli, the fixed rod 5 and the movable rod 6 are manually squeezed so that the fixed rod 5 and the movable rod 6 are close to each other, and the elastic telescopic component 7 is further compressed appropriately; Then, the fixed scanning head 3 is placed in one tooth socket, and the length of the elastic telescopic component 7 is appropriately adjusted so that the mobile scanning head 4 is placed in the other tooth socket; Next, release your hand, and the elastic retractable component 7 will naturally reset and stretch, so that the fixed scanning head 3 and the movable scanning head 4 will respectively abut against the inner wall of the corresponding tooth socket, so that the fixed scanning head 3 and the movable scanning head 4 can maintain a relatively stable position relationship; Finally, the fixed scanning head 3 and the movable scanning head 4 scan the inner contours of the two tooth sockets respectively. After the scanning is completed, the fixed rod 5 and the movable rod 6 can be manually taken out.

[0043] When the auxiliary tool for implant dentures is in use, due to the supporting effect of the elastic telescopic component 7, the fixed scanning head 3 and the movable scanning head 4 can maintain a relatively stable positional relationship, thereby avoiding the problem of inaccurate scanning information caused by hand shaking when holding the scanning head barehanded. The obtained scanning information has a higher degree of fit with the actual internal contours of the two tooth sockets, and the implant shape produced by the scanning information has a smaller error with the internal contour of the tooth socket, thereby improving the success rate of implant placement and making the tooth restoration more beautiful.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An auxiliary tool for implant dentures, comprising a fixed scanning rod (1) and a movable scanning rod (2) parallel to each other, wherein a fixed scanning head (3) is arranged at the lower end of the fixed scanning rod (1), and a movable scanning head (4) is arranged at the lower end of the movable scanning rod (2), characterized in that: The auxiliary tool for implant denture also includes: A fixed rod (5), one end of which is connected to the fixed scanning rod (1); A movable rod (6), one end of which is connected to the movable scanning rod (2), and the other end of which is hinged to the other end of the fixed rod (5); An elastic telescopic component (7) has one end connected to the fixed rod (5) and the other end connected to the movable rod (6), and the elastic telescopic component (7) is used to push the fixed rod (5) and the movable rod (6) away from each other.

2. An auxiliary tool for implant dentures according to claim 1, characterized in that: The ends of the fixed rod (5) and the movable rod (6) that are close to each other are rotatably connected via a hinge axis, the hinge axis is parallel to the length direction of the fixed scanning rod (1), and the two ends of the elastic telescopic component (7) are respectively movably connected to the fixed rod (5) and the movable rod (6).

3. The auxiliary tool for implant denture according to claim 1, characterized in that: The ends of the fixed rod (5) and the movable rod (6) that are close to each other are connected via a universal ball (8); a connecting ring (9) is provided on the same side of the fixed rod (5) and the movable rod (6); the two connecting rings (9) are respectively connected to a hook ring (10); and the two hook rings (10) are fixedly arranged at both ends of the elastic telescopic component (7).

4. An auxiliary tool for implant dentures as claimed in claim 3, characterized in that: The elastic telescopic component (7) comprises: A sleeve (11) having a hook ring (10) fixedly connected to the end thereof; A spring (12) is disposed in the sleeve (11), one end of the spring (12) being abutted against the bottom of the sleeve (11); The sliding rod (11-1) has a hook ring (10) fixedly connected to one end thereof and the other end thereof slidably disposed in the sleeve (11) and connected to the other end of the spring (12).

5. The auxiliary tool for implant denture according to claim 1, characterized in that: The fixed scanning rod (1) and the fixed scanning head (3) are connected via a first connecting portion (13), wherein the first connecting portion (13) comprises: A first disc-shaped member (14) has two surfaces with slots (15) for respectively clamping the fixed scanning rod (1) and the fixed scanning head (3), and a side surface of the first disc-shaped member (14) has an annular groove (16); A circular ring (17) is rotatably disposed in the annular groove (16), and the circular ring (17) is fixedly connected to the end of the fixing rod (5).

6. The auxiliary tool for implant denture according to claim 5, characterized in that: The first disc-shaped member (14) has a through hole (18) penetrating through its two surfaces, the fixed scanning rod (1) has a first countersunk hole, the through hole (18) and the first countersunk hole are penetrated by a first screw rod, the end of the first screw rod is threadedly connected to a threaded hole on the fixed scanning head (3), and is used to connect the fixed scanning rod (1), the first disc-shaped member (14) and the fixed scanning head (3).

7. The auxiliary tool for implant denture according to claim 1, characterized in that: The movable scanning rod (2) and the movable scanning head (4) are connected via a second connecting portion (19), wherein the second connecting portion (19) comprises: The second disc-shaped member (20) has bosses (21) on both surfaces, and the surfaces of the movable scanning rod (2) and the movable scanning head (4) close to each other are respectively provided with grooves that are engaged and rotatably connected to the bosses (21), and the side wall of the second disc-shaped member (20) is fixedly connected to the end of the movable rod (6).

8. The auxiliary tool for implant denture according to claim 7, characterized in that: The middle portion of the second disk-shaped member (20) has a limiting hole (22) penetrating the two bosses (21); the movable scanning rod (2) has a second countersunk hole; a second screw rod is passed through the second countersunk hole and the limiting hole (22); an end of the second screw rod is threadedly connected to a threaded hole on the movable scanning head (4), so as to connect the movable scanning rod (2), the second disk-shaped member (20) and the movable scanning head (4).

9. The auxiliary tool for implant denture according to claim 1, characterized in that: The outer diameter of the movable scanning rod (2) is the same as the outer diameter of the second disc-shaped member (20), and an annular capsule (23) is provided on the outer periphery of the movable scanning rod (2) for reducing the squeezing of the inner wall of the alveolar socket.

10. An auxiliary tool for implant dentures according to claim 9, characterized in that: The annular capsule (23) is C-shaped, the annular capsule (23) is slidably connected to the outer wall of the scanning rod (2), and a plurality of elastic ribs (24) are arranged in the capsule wall of the annular capsule (23) close to the scanning rod (2).

Images