Miniature distraction type distractor with alveolar ridge widened in horizontal direction
By designing a miniature stretcher that horizontally widens the alveolar ridge, and using a stretching bolt and fixing plate structure to gradually expand the alveolar bone gap, the problems of large trauma and inconvenient operation of traditional stretchers are solved, and effective thickening and safe expansion of alveolar bone are achieved.
Patent Information
- Application Number
- CN202423081968.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2034-12-13
AI Technical Summary
Traditional alveolar bone augmentation distraction devices are large, inconvenient to operate, and highly invasive. Bone grafting surgery also carries risks and unpredictable bone formation results.
A miniature stretcher for horizontal widening of the alveolar ridge is designed, employing a structure of stretching bolts, a fixing plate, and a stretching plate. The stretching bolts are adjusted by threads to gradually expand the alveolar bone gap. Titanium metal is used to reduce trauma and achieve stable fixation.
It achieves horizontal widening of the alveolar bone, reduces surgical trauma, is easy to operate, has significant osteogenic effects, and shortens the time for bone increase, making it suitable for patients with weak alveolar bone.
Smart Images
Figure CN223810679U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to alveolar ridge operation tool field, concretely relates to a kind of microtype distraction of alveolar ridge horizontal widening distraction. BACKGROUND
[0002] The microtype distraction of alveolar ridge horizontal widening distraction is a kind of distraction osteogenesis device for the alveolar bone thickness of the toothless area of oral cavity, mainly used to thicken alveolar ridge, solve the problem of insufficient bone mass for later implant implantation, it widens the alveolar bone split by slow and continuous force, gradually forms new bone, to improve the alveolar bone thickness of the toothless area.
[0003] The existing implant implantation needs the alveolar bone of sufficient width and height in toothless area, and the alveolar ridge horizontal width is narrowed due to the alveolar bone absorption after the tooth loss of patient in clinic, the method of alveolar ridge expansion, bone grafting, bone distraction and other operations is generally used to increase the width of bone, but there are risks in bone grafting operation itself, autologous bone grafting needs bone from donor area, and the trauma is large, artificial bone powder bone grafting has the disadvantages of poor osteogenesis effect, long new bone formation process after bone grafting, unpredictable osteogenesis effect and the like, and the traditional distractor of distraction osteogenesis is mainly used for alveolar bone heightening, and the device has large size, inconvenient operation and large trauma during operation.
[0004] Therefore, in view of the problems of the traditional distractor, which is mainly used for alveolar bone heightening, and large size, inconvenient operation and large trauma during operation, a microtype distraction of alveolar ridge horizontal widening distraction is developed, the alveolar bone of patient can be effectively distracted by alveolar ridge bone splitting operation and the metal plate with screw adjusting structure and screw fixing structure, non-bone implantation is realized, and the device is simple to manufacture, has small trauma to alveolar ridge and is convenient to operate. CONTENT OF UTILITY MODEL
[0005] In order to overcome the problems of the traditional distractor, which is mainly used for alveolar bone heightening, and large size, inconvenient operation and large trauma during operation.
[0006] The technical scheme of the utility model is as follows: a microtype distraction of alveolar ridge horizontal widening distraction, comprising distraction bolt, fixed plate and distraction plate, screw groove is formed in the center of both ends of fixed plate, distraction bolt is arranged in screw groove, the end of distraction bolt is attached to the outer side of distraction plate, fixed plate is located on the outer side of alveolar bone, and distraction plate is arranged in the gap split at the top end of alveolar ridge.
[0007] As preferred, six asymmetrically distributed nail holes are formed in both ends of fixed plate, one nail hole is selected in each end during fixation, and the nail hole is close to the side edge of fixed plate, so as to avoid adjacent tooth root as standard.
[0008] As preferred, the expansion plate is slightly wider at the upper end and slightly narrower at the lower end, the cross section is wedge-shaped, the upper end is 1.5mm thick and the lower end is 0.5mm thick, the wedge-shaped design and the retraction force after splitting of the alveolar ridge crest are balanced to resist displacement of the expansion plate.
[0009] As preferred, a screw is arranged in the pin hole, and the screw is a medical screw.
[0010] As preferred, the fixed plate and the expansion plate are both titanium metal rigid plates, and the fixed plate is larger than the expansion plate.
[0011] As preferred, the length of the expansion bolt is about 5-8mm, the surface is external thread, the end is internal cross or internal square, and the screw groove is internal thread.
[0012] As preferred, the length, width and curvature of the fixed plate are customized and selected according to the shape and fit degree of the alveolar bone.
[0013] The beneficial effects of the utility model are:
[0014] 1. The expansion bolt in the form of screw is screwed into the screw groove of the fixed plate, which can facilitate the doctor to screw the expansion bolt to expand the split gap, so as to achieve the purpose of bone stretching, and the alveolar bone reaches the expansion thickness and keeps the position of the bolt, so that the bone gradually grows;
[0015] 2. The fixed plate and the expansion plate are in rigid contact and fixed with the alveolar bone and the split gap, which prevents the instability of bone stretching and the retraction after expansion, and the device is gentle and small in force, and will not cause too much pain. DRAWINGS
[0016] Figure 1 The utility model discloses a three-dimensional structure schematic diagram of the micro expansion type distractor for horizontal widening of the alveolar ridge crest is shown.
[0017] Figure 2 The utility model discloses a three-dimensional structure split schematic diagram of the micro expansion type distractor for horizontal widening of the alveolar ridge crest is shown.
[0018] Figure 3 The utility model discloses a three-dimensional structure split schematic diagram of the expansion plate of the micro expansion type distractor for horizontal widening of the alveolar ridge crest is shown.
[0019] Figure 4 The utility model discloses a three-dimensional structure split schematic diagram of the screw and expansion bolt of the micro expansion type distractor for horizontal widening of the alveolar ridge crest is shown.
[0020] Mark explanation: 1-fixed plate, 2-expansion plate, 3-expansion bolt, 4-screw, 5-screw groove, 6-pin hole. CONCRETE IMPLEMENTATION
[0021] The mini expander is a device used to increase the width of the alveolar ridge in the dental arch. It is designed to be used in cases where the alveolar bone is not thick enough to support dental implants. The device works by applying a slow and continuous force to the alveolar bone, causing it to expand and thicken over time. This can help to improve the bone quality in the dental arch and make it more suitable for implant placement.
[0022] The mini expander is a device used to increase the width of the alveolar ridge in the dental arch. It is designed to be used in cases where the alveolar bone is not thick enough to support dental implants. The device works by applying a slow and continuous force to the alveolar bone, causing it to expand and thicken over time. This can help to improve the bone quality in the dental arch and make it more suitable for implant placement.
[0023] The mini expander is a device used to increase the width of the alveolar ridge in the dental arch. It is designed to be used in cases where the alveolar bone is not thick enough to support dental implants. The device works by applying a slow and continuous force to the alveolar bone, causing it to expand and thicken over time. This can help to improve the bone quality in the dental arch and make it more suitable for implant placement.
[0024] 1. Mechanism of action
[0025] The mini expander is a device used to increase the width of the alveolar ridge in the dental arch. It is designed to be used in cases where the alveolar bone is not thick enough to support dental implants. The device works by applying a slow and continuous force to the alveolar bone, causing it to expand and thicken over time. This can help to improve the bone quality in the dental arch and make it more suitable for implant placement.
[0026] 2. Indications
[0027] The mini expander is a device used to increase the width of the alveolar ridge in the dental arch. It is designed to be used in cases where the alveolar bone is not thick enough to support dental implants. The device works by applying a slow and continuous force to the alveolar bone, causing it to expand and thicken over time. This can help to improve the bone quality in the dental arch and make it more suitable for implant placement.
[0028] 3. Design features
[0029] The mini expander is a device used to increase the width of the alveolar ridge in the dental arch. It is designed to be used in cases where the alveolar bone is not thick enough to support dental implants. The device works by applying a slow and continuous force to the alveolar bone, causing it to expand and thicken over time. This can help to improve the bone quality in the dental arch and make it more suitable for implant placement.
[0030] The mini expander is a device used to increase the width of the alveolar ridge in the dental arch. It is designed to be used in cases where the alveolar bone is not thick enough to support dental implants. The device works by applying a slow and continuous force to the alveolar bone, causing it to expand and thicken over time. This can help to improve the bone quality in the dental arch and make it more suitable for implant placement.
[0031] The mini expander is a device used to increase the width of the alveolar ridge in the dental arch. It is designed to be used in cases where the alveolar bone is not thick enough to support dental implants. The device works by applying a slow and continuous force to the alveolar bone, causing it to expand and thicken over time. This can help to improve the bone quality in the dental arch and make it more suitable for implant placement.
[0032] Safety: The device is made of titanium metal, which is well compatible with the tissue and does not cause rejection. The titanium metal is solid and not easy to break. The oral hygiene is maintained well to prevent infection.
[0033] Efficacy: According to the principle of bone distraction, the local bone mass can be effectively increased to lay a good foundation for the later implantation of dental implants for patients with narrow alveolar ridge.
[0034] 4. Treatment process
[0035] When using this distractor, the doctor needs to tighten the bolt force adjustment every day, usually expanding 0.5mm per day, and when the alveolar ridge thickness reaches 6-8mm, the bolt force is no longer tightened, and then maintained for 1-2 months, and then the device is removed. The process of distracting and thickening the alveolar ridge is relatively less time-consuming than increasing the thickness by bone grafting, but in order to achieve the desired effect, the doctor will develop a suitable treatment plan according to the specific circumstances of the patient.
[0036] 5. Advantages
[0037] Does not affect daily activities: Because of its small design, its purpose is to expand the alveolar ridge with a thickness of 3-4mm to 6-8mm, so the device will not be too large, and the distraction bolt can be hidden under the mucosa, and will not be too long, and the patient will have less discomfort.
[0038] Obvious effect: After distraction, the alveolar bone thickness increases, and the bone mass deficiency is improved, which is better and shorter than the effect of conventional bone grafting.
[0039] Simple operation: The distractor has a simple structure and is easy to use, and the doctor can review the situation and make appropriate adjustments.
[0040] 6. Suitable population
[0041] It is suitable for patients with insufficient alveolar bone thickness after tooth loss, which affects the implantation of dental implants. It is not suitable for patients with excessively thin alveolar bone who cannot perform ridge splitting.
[0042] 7. Matters needing attention
[0043] Regular follow-up: Patients need daily follow-up in the first week, and regular follow-up in the next two months; maintain oral cleanliness and hygiene to prevent infection.
[0044] In summary, the micro-distraction type distractor for horizontal widening of the alveolar ridge is a high-efficiency alveolar ridge bone mass expansion tool suitable for patients who need to increase the thickness of the alveolar bone, and the expected effect can be achieved through treatment.
[0045] The utility model will be further described below in combination with the drawings and examples.
[0046] Please refer to Figures 1-4The utility model provides a kind of embodiment: a miniature distraction type distractor of alveolar ridge horizontal widening, including distraction bolt 3, fixed plate 1 and distraction plate 2, the center of fixed plate 1 is provided with screw groove 5, distraction bolt 3 is arranged in screw groove 5, the end of distraction bolt 3 can be attached with the outside of distraction plate 2, fixed plate 1 is located at the outside of alveolar bone, distraction plate 2 is placed in the gap split at the top of alveolar ridge.
[0047] By the distraction bolt 3 in screw groove 5 of fixed plate 1 is screwed in the form of thread, doctor can be convenient to twist distraction bolt 3 to split gap to be enlarged, to reach the purpose of bone distraction, alveolar bone reaches the distraction thickness, keeps bolt position, makes gradually osteogenesis, again by the rigid contact and firm fixation of fixed plate 1 and distraction plate 2 with alveolar bone, split gap, prevent bone distraction instability, shrink after distraction etc., the device is operated gently, and force is small, and excessive pain cannot be caused.
[0048] Please refer to Figure 3 In the embodiment, the two ends of the fixed plate 1 are provided with six asymmetrically distributed nail holes 6, and one nail hole 6 is selected at each end during fixation to avoid the adjacent tooth root as a standard. The nail holes 6 are close to the two side edges of the fixed plate 1. In use, the four corners of the fixed plate 1 are designed in an arc shape to prevent tissue injury. The nail holes 6 are provided with screws 4, and the screws 4 are medical threaded nails. In use, the nail holes 6 on both sides of the fixed plate 1 can pass through the screws 4 to firmly fix them on the bone surface, and the ends of the screws 4 are hidden in the screw holes after being tightened.
[0049] Please refer to Figure 2 In the embodiment, the distraction plate 2 is slightly wide at the upper end and slightly narrow at the lower end, and the cross section is wedge-shaped. The upper end is 1.5 mm thick, and the lower end is 0.5 mm thick. The wedge-shaped design counteracts the shrinkage force after splitting the top of the alveolar ridge, so that the distraction plate 2 is displaced and retained. In use, the distraction plate 2 has a cross section in the shape of a wedge with a thick upper side and a thin lower side, which can be wedged into the split gap from above the alveolar bone. The length, width and arc of the fixed plate 1 are customized and selected according to the shape of the alveolar bone and the degree of adhesion. In use, the distraction plate 2 has multiple models, which are wedged into the size and gap after splitting the alveolar bone in the surgical area, and resist the distraction bolt 3, so that the distraction bolt 3 gradually applies force on the distraction plate 2.
[0050] Please refer to Figures 2-3 In the embodiment, the fixed plate 1 and the distraction plate 2 are both rigid metal plates made of titanium material, and the fixed plate 1 is larger than the distraction plate 2. In use, the fixed plate 1 and the distraction plate 2 are in direct contact with the bone tissue. The length of the distraction bolt 3 is about 5-8 mm, the surface is external thread, the head end is internal cross or internal square, and the screw groove 5 is internal thread. In use, the distraction bolt 3 with the head end of internal cross or internal square is convenient for screwdriver to be screwed in, and the head end is exposed outside the periosteum or outside the mucosa, which can be replaced according to the thickness of the alveolar ridge expanded later.
[0051] In use, the alveolar crest is divided into buccal and lingual bone walls by splitting a gap on the alveolar crest top with a bone chisel, the expansion plate 2 is placed in the gap, then the fixed plate 1 is fixed on the outside of the buccal alveolar bone wall with the screw 4;
[0052] Then, the expansion screw 3 is screwed into the screw groove 5 in the center of the fixed plate 1, a hole is punched on the buccal bone wall corresponding to the screw hole, a slit is made on the corresponding buccal mucosa, then the expansion screw 3 is screwed to pass through the mucosa hole, the steel plate screw hole, the buccal bone wall hole and the end of the expansion plate 2 in the bone gap.
[0053] Then, the expansion screw 3 is screwed into the screw groove 5 in the center of the fixed plate 1, a hole is punched on the buccal bone wall corresponding to the screw hole, a slit is made on the corresponding buccal mucosa, then the expansion screw 3 is screwed to pass through the mucosa hole, the steel plate screw hole, the buccal bone wall hole and the end of the expansion plate 2 in the bone gap.
[0054] Through the above steps, the expansion screw 3 screwed into the screw groove 5 of the fixed plate 1 in the form of threads can facilitate the doctor to screw the expansion screw 3 to expand the split gap, so as to achieve the purpose of bone expansion. After the alveolar bone reaches the expansion thickness, the screw position is maintained, the bone is gradually formed, and the fixed plate 1 and the expansion plate 2 are rigidly contacted and firmly fixed with the alveolar bone and the split gap, preventing bone expansion instability, retraction after expansion, etc. The device is gentle and small in force, and will not cause too much pain, solving the problem of traditional expansion device which mainly increases the alveolar bone, and the device has large volume, inconvenient operation and needs large trauma surgery.
[0055] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the utility model.
Claims
1. A mini-expansion distractor for horizontal augmentation of alveolar ridge, comprising an expansion bolt (3), a fixing plate (1) and an expansion plate (2), characterized in that: The center of the fixed plate (1) is provided with a screw groove (5), and the screw groove (5) is provided with a distraction bolt (3) in a threaded manner. The end of the distraction bolt (3) is attachable to the outer side of the distraction plate (2). The fixed plate (1) is located on the outer side of the alveolar bone, and the distraction plate (2) is placed in the gap split at the top of the alveolar ridge.
2. The mini-spread distractor for horizontal augmentation of alveolar ridge according to claim 1, characterized in that: The two ends of the fixed plate (1) are provided with six asymmetrically distributed nail holes (6). When fixed, one nail hole (6) is selected at each end to avoid the adjacent tooth root as a standard, and the nail hole (6) is close to the two side edges of the fixed plate (1).
3. The miniaturized distraction device for horizontal augmentation of the alveolar ridge according to claim 2, characterized in that: The distraction plate (2) is slightly wide at the upper end and slightly narrow at the lower end, and the cross section is wedge-shaped. The upper end is 1.5 mm thick, and the lower end is 0.5 mm thick. The wedge-shaped design and the retraction force after splitting the top of the alveolar ridge are resistant to displacement of the distraction plate (2).
4. The mini-splint distractor for horizontal augmentation of alveolar ridge according to claim 3, characterized in that: The nail hole (6) is provided with a screw (4), and the screw (4) is a medical threaded nail.
5. The micro-ridge expansion distractor for horizontal augmentation of alveolar ridge according to claim 4, wherein: The fixed plate (1) and the distraction plate (2) are both titanium metal rigid plates, and the fixed plate (1) is larger than the distraction plate (2).
6. The miniaturized distraction screw of claim 5, wherein: The length of the distraction bolt (3) is about 5-8 mm, the surface is external thread, the end is internal cross or internal square, and the screw groove (5) is internal thread.
7. The micro- expansion distractor for horizontal augmentation of alveolar ridge according to claim 6, characterized in that: The length, width and curvature of the fixed plate (1) are customized and selected according to the shape and attachment degree of the alveolar bone.