Positioning traction device for maxillofacial distraction osteogenesis

Abstract

The application discloses a positioning traction device for maxillofacial distraction osteogenesis, which comprises a distraction osteogenesis device corresponding to maxillofacial soft tissue and an osteotomy guide plate corresponding to teeth; one end of the distraction osteogenesis device corresponds to maxillofacial soft tissue, and the other end of the distraction osteogenesis device corresponds to maxillofacial osteotomy soft tissue, so as to position the relative position between the maxillofacial soft tissue and the maxillofacial osteotomy soft tissue; the osteotomy guide plate comprises a connecting part which is detachably connected with the distraction osteogenesis device, so as to position the spatial position of the distraction osteogenesis device. The application has the beneficial effect that in the device, the relative position between the maxillofacial soft tissue and the maxillofacial osteotomy soft tissue is fixed by the distraction osteogenesis device, and the spatial position of the distraction osteogenesis device is positioned by the connecting part of the osteotomy guide plate, so as to determine the relative position between the maxillofacial soft tissue and the maxillofacial osteotomy soft tissue, and the distraction osteogenesis operation can be finely controlled during the operation, so as to achieve the safe, fast, accurate and stable distraction osteogenesis operation purpose.

Description

Technical Field

[0001] This invention belongs to the field of, and particularly relates to, a positioning traction device for distraction osteotomy of the maxillofacial region. Background Technology

[0002] Patients with cleft lip and palate often develop secondary deformities in adulthood, such as maxillary malocclusion, maxillary hypoplasia, relative mandibular hyperplasia, and facial asymmetry. Compared with conventional orthognathic surgery, the correction of secondary dentofacial deformities caused by cleft lip and palate is more complex and challenging. Because the face is richly innervated and the blood supply system around the jawbone is complex, surgery requires extremely high precision and accuracy in the location of bone incisions and the direction and distance of bone fragment movement. Traditional orthognathic surgery is designed on a two-dimensional level, relying heavily on the surgeon's experience. Even experienced surgeons find it difficult to precisely control the location, direction, and depth of osteotomy, which has always been a major challenge in oral and maxillofacial surgery. Summary of the Invention

[0003] To address the aforementioned problems, the primary objective of this invention is to provide a positioning and traction device for maxillofacial distraction osteogenesis, thereby resolving the technical issues described above.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows:

[0005] The present invention provides a positioning traction device for distraction osteotomy of the maxillofacial region, the device comprising a distraction osteotomy device corresponding to the soft tissue of the maxillofacial region and an osteotomy guide plate corresponding to the teeth;

[0006] One end of the distraction osteogenesis device corresponds to the maxillofacial soft tissue, and the other end of the traction osteogenesis device corresponds to the maxillary osteotomy soft tissue, in order to locate the relative position between the maxillofacial soft tissue and the maxillary osteotomy soft tissue.

[0007] The osteotomy guide plate includes a connecting part that is detachably connected to the distraction osteogenerator to position the distraction osteogenerator in space.

[0008] In one working method, relevant data is obtained through three-dimensional reconstruction technology, osteotomy guide plate is designed by 3D printing, distraction osteoblast and osteotomy guide plate are installed, and the connecting part of osteotomy guide plate is detachably connected to distraction osteoblast.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows: In this device, the relative position between the maxillofacial soft tissue and the maxillary osteotomy soft tissue is fixed by the distraction osteotomy device, and the spatial position of the distraction osteotomy device is positioned by the connecting part of the osteotomy guide plate, so as to determine the relative position between the maxillofacial soft tissue and the maxillary osteotomy soft tissue. This allows for precise control of the position, direction and depth of the osteotomy during surgery, so as to achieve the purpose of safe, fast, accurate and stable distraction osteotomy surgery, thereby restoring the patient's normal speech function, chewing function, facial shape and mouth opening.

[0010] Furthermore, the distraction osteogenerator includes a rod, a first connector, and a second connector. The rod is connected to the first connector and movably connected to the second connector. The first connector corresponds to the maxillary facial soft tissue, and the second connector corresponds to the maxillary osteotomy soft tissue. The second connector is used to pull the maxillary osteotomy soft tissue, thereby adjusting the spatial position of the maxillary osteotomy soft tissue.

[0011] Furthermore, the rod body includes a first rod body and a second rod body, the first rod body and the second rod body are movably connected, the first rod body corresponds to the soft tissue of the maxillary osteotomy, and the second rod body corresponds to the oral cavity;

[0012] The first rod is connected to the first connector, and the first rod is movably connected to the second connector.

[0013] In this embodiment, the first rod and the second rod are movably connected so that the first rod corresponds to the soft tissue of the maxillary osteotomy and the second rod corresponds to the oral cavity.

[0014] Furthermore, the first connector includes a first elongated strip with a first through hole; the second connector includes a second elongated strip with a second through hole. In a working scenario, a screw passes through the first through hole to connect with the soft tissue of the maxilla, and a screw passes through the second through hole to connect with the soft tissue of the maxillary osteotomy.

[0015] Preferably, the rod body further includes a transmission assembly, which is movably fitted inside the first and second rod bodies. A rotating interface is provided at the end of the second rod body furthest from the first rod body, and this rotating interface is connected to the transmission assembly. The transmission assembly on the first rod body is connected to a second connecting member, allowing adjustment of the spatial position of the second connecting member via the rotating interface. This, in turn, pulls the maxillary osteotomy soft tissue, adjusting its spatial position to achieve distraction osteogenesis. Distraction osteogenesis is an endogenous bone tissue engineering technique. It involves cutting the bone and placing specially designed distraction osteogenesis devices on both sides of the osteotomy line. After a certain delay period, the osteotomy gap is slowly pulled, continuously widening it and stimulating the body's tissue regeneration potential. New bone tissue continuously forms within the distraction gap, while simultaneously elongating the surrounding muscles, nerves, blood vessels, and skin, thereby achieving bone lengthening.

[0016] In this embodiment, the second rod corresponds to the oral cavity. The rotation interface of the second rod can be directly rotated through the oral cavity to adjust the spatial position of the second connector. This eliminates the need to insert the rod into the maxilla to adjust the spatial position of the second connector, greatly reducing the difficulty of adjustment and improving efficiency.

[0017] Furthermore, the osteotomy guide plate also includes an occlusal portion connected to the connecting portion, with one side of the occlusal portion corresponding to the maxillary teeth and the other side of the occlusal portion corresponding to the mandibular teeth.

[0018] Furthermore, the occlusal portion includes an alveolar seat, and the connecting portion includes a connecting post and a limiting structure. The upper surface of the alveolar seat corresponds to the maxillary teeth, and the lower surface of the alveolar seat corresponds to the mandibular teeth. A connecting post extends from the side of the alveolar seat, and one end of the connecting post is connected to the limiting structure. The limiting structure is used to detachably connect with the first rod to determine the placement position of the first rod.

[0019] Furthermore, the connecting part also includes a support column, one end of which connects to the alveolar seat, and the other end of which corresponds to the upper part of the nasal region in the maxillary facial soft tissue. By setting up the support column, it provides support between the patient's maxilla and mandible, thus facilitating the installation of the distraction osteotomy device and simplifying surgical procedures. In addition, the combined action of the support column, connecting column, and distraction osteotomy device allows for better fixation of the relative position between the maxillary facial soft tissue and the maxillary osteotomy soft tissue, enabling precise control of the osteotomy location, direction, and depth during surgery, achieving a safe, rapid, accurate, and stable distraction osteotomy procedure.

[0020] Furthermore, the limiting structure includes a slot, which is correspondingly positioned to the side of the first rod. In a working scenario, the patient's teeth bite down on the alveolar seat, and the slot is detachably engaged with the side of the second rod. The slot positions the first rod in space and at an angle, allowing for precise control of the osteotomy location, direction, and depth during surgery. This achieves a safe, rapid, accurate, and stable distraction osteogenesis procedure, restoring the patient's normal speech, chewing, facial morphology, and mouth opening.

[0021] Furthermore, the osteotomy guide plate is made of medical-grade photosensitive resin, which has better biocompatibility and cytotoxicity than ordinary photosensitive resin guide plates, and will not deform after disinfection.

[0022] Furthermore, the connecting part includes a first connecting part and a second connecting part, which correspond to the two sides of the tooth respectively. The distraction osteogenesis device includes a first distraction osteogenesis device and a second distraction osteogenesis device. The first distraction osteogenesis device is detachably connected to the first connecting part, and the second distraction osteogenesis device is detachably connected to the second connecting part.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: In this device, the relative position between the maxillofacial soft tissue and the maxillary osteotomy soft tissue is fixed by the distraction osteotomy device, and the spatial position of the distraction osteotomy device is positioned by the connecting part of the osteotomy guide plate, so as to determine the relative position between the maxillofacial soft tissue and the maxillary osteotomy soft tissue. This allows for precise control of the position, direction and depth of the osteotomy during surgery, so as to achieve the purpose of safe, fast, accurate and stable distraction osteotomy surgery, and restore the patient's normal speech function, chewing function, facial shape and mouth opening. Attached Figure Description

[0024] Figure 1 This is a structural diagram of the second distraction osteogenic organ.

[0025] Figure 2 This is a structural diagram of the first distraction osteogenic organ.

[0026] Figure 3 This is a structural diagram of a distraction osteogenic apparatus.

[0027] Figure 4 This is a schematic diagram of the positioning and traction device in use from a first-person perspective.

[0028] Figure 5 This is a schematic diagram of the positioning and traction device in use from a second-view perspective.

[0029] Figure 6 This is a schematic diagram of the positioning and traction device in use from a third-person perspective.

[0030] Figure 7 and Figure 8 This is a schematic diagram of a partial usage state of the positioning and traction device.

[0031] Figure 9 , Figure 10 and Figure 11 This is a schematic diagram of the positioning and traction device in actual working scenarios.

[0032] In the figure: 1. Distraction osteoblast; 2. Osteotomy guide plate; 21. Connecting part; 13. Rod body; 11. First connecting piece; 12. Second connecting piece; 131. First rod body; 132. Second rod body; 111. First strip; 112. First through hole; 121. Second strip; 122. Second through hole; 22. Occlusal part; 221. Alveolar seat; 211. Connecting post; 212. Limiting structure; 213. Support post; 214. Slot; 201. First connecting part; 202. Second connecting part; 101. First distraction osteoblast; 102. Second distraction osteoblast. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0034] To achieve the above objectives, the technical solution of the present invention is as follows:

[0035] See Figures 1-3 As shown, the present invention provides a positioning traction device for distraction osteotomy of the maxillofacial region. The device includes a distraction osteotomy device 1 corresponding to the soft tissue of the maxillofacial region and an osteotomy guide plate 2 corresponding to the teeth.

[0036] One end of the distraction osteogenerator 1 corresponds to the maxillofacial soft tissue, and the other end of the distraction osteogenerator corresponds to the maxillary osteotomy soft tissue, so as to locate the relative position between the maxillofacial soft tissue and the maxillary osteotomy soft tissue.

[0037] The osteotomy guide plate 2 includes a connecting part 21, which is detachably connected to the distraction osteogenerator 1 to position the distraction osteogenerator 1 in space.

[0038] In one working mode, relevant data is obtained through three-dimensional reconstruction technology, osteotomy guide plate 2 is designed by 3D printing, distraction osteoblast 1 and osteotomy guide plate 2 are installed, and the connecting part 21 of osteotomy guide plate 2 is detachably connected to distraction osteoblast 1.

[0039] Compared with the prior art, the beneficial effects of the present invention are as follows: In this device, the relative position between the maxillofacial soft tissue and the maxillary osteotomy soft tissue is fixed by the distraction osteotomy device 1, and the spatial position of the distraction osteotomy device 1 is positioned by the connecting part 21 of the osteotomy guide plate 2, so as to determine the relative position between the maxillofacial soft tissue and the maxillary osteotomy soft tissue. This allows for precise control of the position, direction and depth of the osteotomy during surgery, so as to achieve the purpose of safe, fast, accurate and stable distraction osteotomy surgery, thereby restoring the patient's normal speech function, chewing function, facial shape and mouth opening.

[0040] In this embodiment, the distraction osteogenerator 1 includes a rod 13, a first connector 11, and a second connector 12. The rod 13 is connected to the first connector 11, and the rod 13 is movably connected to the second connector 12. The first connector 11 corresponds to the maxillary facial soft tissue, and the second connector 12 corresponds to the maxillary osteotomy soft tissue, so as to adjust the spatial position of the maxillary osteotomy soft tissue by traction of the maxillary osteotomy soft tissue through the second connector 12.

[0041] In this embodiment, the rod 13 includes a first rod 131 and a second rod 132. The first rod 131 and the second rod 132 are movably connected. The first rod 131 corresponds to the soft tissue of the maxillary osteotomy, and the second rod 132 corresponds to the oral cavity.

[0042] In some implementations, the second rod is a flexible rod that can be moved to adjust its spatial position.

[0043] The first rod 131 is connected to the first connector 11, and the first rod 131 is movably connected to the second connector 12.

[0044] In this embodiment, the first rod 131 and the second rod 132 are movably connected so that the first rod 131 corresponds to the soft tissue of the maxillary osteotomy and the second rod 132 corresponds to the oral cavity.

[0045] In this embodiment, the first connector 11 includes a first elongated strip 111 with a first through hole 112; the second connector 12 includes a second elongated strip 121 with a second through hole 122. In a working scenario, a screw passes through the first through hole 112 to connect with the soft tissue of the maxillofacial region, and a screw passes through the second through hole 122 to connect with the soft tissue of the maxillary osteotomy.

[0046] Preferably, the rod 13 further includes a transmission assembly, which is movably sleeved within the first rod 131 and the second rod 132. A rotating interface is provided at the end of the second rod 132 away from the first rod 131, and the rotating interface is connected to the transmission assembly. The transmission assembly on the first rod 131 is connected to the second connecting member 12, so as to adjust the spatial position of the second connecting member 12 through the rotating interface, thereby traction of the maxillary osteotomy soft tissue and adjustment of the spatial position of the maxillary osteotomy soft tissue, thereby achieving distraction osteogenesis. Distraction osteogenesis is an endogenous bone tissue engineering technique. It involves cutting the bone and placing specially designed distraction osteogenesis devices 1 on both sides of the osteotomy line. After a certain delay period, the osteotomy gap is slowly distracted, causing the osteotomy gap to widen continuously and stimulating the body's tissue regeneration potential. New bone tissue is continuously formed within the distraction gap, while simultaneously lengthening the surrounding muscles, nerves, blood vessels, and skin, thereby achieving the purpose of bone lengthening.

[0047] In some embodiments, the transmission assembly includes a threaded flexible rod (not shown), one end of which is connected to a rotating interface (not shown). The threaded flexible rod is sleeved within a first rod body 131 and a second rod body 132. The threaded flexible rod is threadedly connected to a second connector 12 so that the spatial position of the second connector 12 can be adjusted by rotating the rotating interface, thereby traction of the maxillary osteotomy soft tissue, adjusting the spatial position of the maxillary osteotomy soft tissue, and thus achieving distraction osteogenesis.

[0048] In this embodiment, the second rod 132 corresponds to the oral cavity. The rotation interface provided on the second rod 132 can be directly rotated through the oral cavity to adjust the spatial position of the second connector 12. This eliminates the need to insert the rod into the maxilla to adjust the spatial position of the second connector 12, greatly reducing the difficulty of adjustment and improving efficiency.

[0049] In this embodiment, the osteotomy guide plate 2 also includes an occlusal portion 22 connected to the connecting portion 21. One side of the occlusal portion 22 corresponds to the maxillary teeth, and the other side of the occlusal portion 22 corresponds to the mandibular teeth.

[0050] In this embodiment, the occlusal portion 22 includes an alveolar seat 221, and the connecting portion 21 includes a connecting post 211 and a limiting structure 212. The upper surface of the alveolar seat 221 corresponds to the maxillary teeth, and the lower surface of the alveolar seat 221 corresponds to the mandibular teeth. The connecting post 211 extends from the side of the alveolar seat 221, and one end of the connecting post 211 is connected to the limiting structure 212. The limiting structure 212 is used to detachably connect with the first rod 131 to determine the placement position of the first rod 131.

[0051] In this embodiment, the connecting part 21 further includes a support column 213. One end of the support column 213 is connected to the alveolar seat 221, and the other end of the support column 213 corresponds to the upper part of the nasal side of the maxillary facial soft tissue. By setting the support column 213, it provides support between the patient's maxilla and mandible, thereby facilitating the installation of the distraction osteotomy device 1 and making surgical operations easier. In addition, through the combined action of the support column 213, the connecting column 211, and the distraction osteotomy device 1, the relative position between the maxillary facial soft tissue and the maxillary osteotomy soft tissue can be better fixed, allowing for precise control of the position, direction, and depth of the osteotomy during surgery, thereby achieving the goal of safe, fast, accurate, and stable distraction osteotomy surgery.

[0052] In this embodiment, the limiting structure 212 includes a slot 214, which is correspondingly disposed on the side of the first rod 131. In a working scenario, the patient's teeth bite down on the alveolar seat 221, and the slot 214 is detachably engaged with the side of the second rod 132. The slot 214 positions the first rod 131 in space and at an angle, allowing for precise control of the position, direction, and depth of the osteotomy during surgery. This achieves a safe, fast, accurate, and stable distraction osteogenesis procedure, restoring the patient's normal speech function, chewing function, facial morphology, and mouth opening.

[0053] In this embodiment, the osteotomy guide plate 2 is made of medical photosensitive resin, which has biocompatibility and cytotoxicity-related detection compared to ordinary photosensitive resin guide plates, and will not deform after disinfection.

[0054] In this embodiment, the connecting part 21 includes a first connecting part 201 and a second connecting part 202, the first connecting part 201 and the second connecting part 202 respectively correspond to the two sides of the tooth, and the distraction osteogenesis device 1 includes a first distraction osteogenesis device 101 and a second distraction osteogenesis device 102. The first distraction osteogenesis device 101 is detachably connected to the first connecting part 201, and the second distraction osteogenesis device 102 is detachably connected to the second connecting part 202.

[0055] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A positioning traction device for maxillofacial distraction osteotomy, characterized in that, The device includes a distraction osteogenerator corresponding to the soft tissues of the maxillofacial region and an osteotomy guide plate corresponding to the teeth. One end of the distraction osteogenesis device corresponds to the maxillofacial soft tissue, and the other end of the traction osteogenesis device corresponds to the maxillary osteotomy soft tissue, in order to locate the relative position between the maxillofacial soft tissue and the maxillary osteotomy soft tissue. The osteotomy guide plate includes a connecting part that is detachably connected to the distraction osteogenerator to position the distraction osteogenerator in space.

2. The positioning and traction device as described in claim 1, characterized in that, The distraction osteogenerator includes a rod, a first connector, and a second connector. The rod is connected to the first connector and movably connected to the second connector. The first connector corresponds to the soft tissue of the maxillary face, and the second connector corresponds to the soft tissue of maxillary osteotomy. The second connector is used to pull the soft tissue of maxillary osteotomy, thereby adjusting the spatial position of the soft tissue of maxillary osteotomy.

3. The positioning and traction device as described in claim 2, characterized in that, The rod body includes a first rod body and a second rod body, which are movably connected. The first rod body corresponds to the soft tissue of the maxillary osteotomy, and the second rod body corresponds to the oral cavity. The first rod is connected to the first connector, and the first rod is movably connected to the second connector.

4. The positioning and traction device as described in claim 2 or 3, characterized in that, The first connector includes a first long strip with a first through hole; the second connector includes a second long strip with a second through hole.

5. The positioning and traction device as described in claim 3, characterized in that, The osteotomy guide plate also includes an occlusal portion connected to the connecting portion, with one side of the occlusal portion corresponding to the maxillary teeth and the other side of the occlusal portion corresponding to the mandibular teeth.

6. The positioning and traction device as described in claim 5, characterized in that, The occlusal portion includes an alveolar seat, and the connecting portion includes a connecting post and a limiting structure. The upper surface of the alveolar seat corresponds to the maxillary teeth, and the lower surface of the alveolar seat corresponds to the mandibular teeth. A connecting post extends from the side of the alveolar seat, and one end of the connecting post is connected to the limiting structure. The limiting structure is used to detachably connect with the first rod to determine the placement position of the first rod.

7. The positioning and traction device as described in claim 6, characterized in that, The connecting part also includes a support post, one end of which is connected to the alveolar seat, and the other end of which corresponds to the upper part of the nasal side in the soft tissue of the maxillofacial region.

8. The positioning and traction device as described in claim 6, characterized in that, The limiting structure includes a slot, which is correspondingly set on the side of the first rod.

9. The positioning and traction device as described in claim 1, characterized in that, The osteotomy guide plate is made of medical-grade photosensitive resin.

10. The positioning and traction device as described in claim 1, characterized in that, The connecting part includes a first connecting part and a second connecting part, which correspond to the two sides of the tooth respectively. The distraction osteogenesis device includes a first distraction osteogenesis device and a second distraction osteogenesis device. The first distraction osteogenesis device is detachably connected to the first connecting part, and the second distraction osteogenesis device is detachably connected to the second connecting part.

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