CN110613475B - A tool for locating foreign bodies in deep maxillofacial region and a method of using the tool - Google Patents
A tool for locating foreign bodies in deep maxillofacial region and a method of using the tool Download PDFInfo
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- CN110613475B CN110613475B CN201911024035.8A CN201911024035A CN110613475B CN 110613475 B CN110613475 B CN 110613475B CN 201911024035 A CN201911024035 A CN 201911024035A CN 110613475 B CN110613475 B CN 110613475B
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 210000004513 dentition Anatomy 0.000 claims abstract description 30
- 230000036346 tooth eruption Effects 0.000 claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000010146 3D printing Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 230000004807 localization Effects 0.000 claims 1
- 238000003384 imaging method Methods 0.000 abstract description 11
- 230000005855 radiation Effects 0.000 abstract description 6
- 210000001847 jaw Anatomy 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 210000004872 soft tissue Anatomy 0.000 description 3
- 238000012938 design process Methods 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 210000003484 anatomy Anatomy 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004373 mandible Anatomy 0.000 description 1
- 210000002050 maxilla Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 210000003800 pharynx Anatomy 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/12—Arrangements for detecting or locating foreign bodies
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/20—Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
- A61B6/51—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for dentistry
- A61B6/512—Intraoral means
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/20—Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
- A61B2034/2046—Tracking techniques
- A61B2034/2065—Tracking using image or pattern recognition
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/20—Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
- A61B2034/2072—Reference field transducer attached to an instrument or patient
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Medical Informatics (AREA)
- Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Veterinary Medicine (AREA)
- Molecular Biology (AREA)
- Heart & Thoracic Surgery (AREA)
- Biophysics (AREA)
- Radiology & Medical Imaging (AREA)
- Pathology (AREA)
- Optics & Photonics (AREA)
- High Energy & Nuclear Physics (AREA)
- Physics & Mathematics (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Robotics (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Surgical Instruments (AREA)
Abstract
本发明公开了一种颌面深处异物定位工具，包括套设在人体牙列处的咬合板和与异物接触的导杆，所述导杆包括用于定位异物的定位杆、连接块和转向头，所述咬合板靠近人体颊部一侧具有固定连接块的连接装置，所述连接装置上具有第一连接孔，所述连接块具有与所述第一连接孔互相配合的固定柱，所述转向头的其中一侧面具有固定所述定位杆的第二插孔，本发明在使用过程中，通过从影像学上进行定位，利用定位杆将定位信息转移到术中操作上，无任何辐射，对医疗机构无硬件设备要求，术中安置过程简单，成本低，效率高，节省手术时间，实现真正的3D导航，通过转向头、标记区和指针的设置，提高定位杆的调整精度。
The present invention discloses a tool for locating foreign bodies deep in the maxillofacial region, comprising a bite plate sleeved on human dentition and a guide rod in contact with the foreign body, the guide rod comprising a positioning rod, a connecting block and a steering head for locating the foreign body, the bite plate having a connecting device for fixing the connecting block on a side close to the cheek of the human body, the connecting device having a first connecting hole, the connecting block having a fixing column cooperating with the first connecting hole, and one side surface of the steering head having a second jack for fixing the positioning rod. During use, the present invention performs positioning through imaging, and uses the positioning rod to transfer the positioning information to intraoperative operation, without any radiation, and without hardware equipment requirements for medical institutions, and the intraoperative placement process is simple, low in cost, and high in efficiency, saving operation time, and realizing true 3D navigation, and the adjustment accuracy of the positioning rod is improved by setting the steering head, the marking area and the pointer.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a positioning tool for foreign matters deep in the jaw face and a use method thereof.
Background
The diagnosis and treatment of the foreign matters in the depth of the maxillofacial region are complex, particularly the foreign matters are located in the space formed by the inner side of the ascending mandibular branch, beside the pharynx and the cervical vertebra, the anatomical structure is complex, the vascular nerves are rich, the diagnosis and treatment plan of doctors is very tested, the existing positioning technology of the foreign matters in the depth of the maxillofacial region is mainly divided into an imaging technology and a positioning technology, the imaging technology refers to the examination of X-rays, CT, MRI, C-arm and the like, the foreign matters can be positioned in the imaging technology, and the positioning technology refers to a tool extending on the basis of the imaging technology, and is mainly an operation navigation system at present.
The imaging technology can locate the position in imaging, but can not transfer the position to operation in operation, the operation navigation system is designed based on preoperative CT and MRI data, a dynamic reference system needs to be arranged and calibrated, the operation process is complex, a medical institution is required to have the equipment and related personnel, the hardware requirement on the medical institution and the doctor level requirement are high, meanwhile, the navigation information fed back to the doctor by the operation navigation system is still a bitmap and is not truly 3D navigation, C-arm can continuously transmit in operation to guide the real-time position in operation, however, the image presented by C-arm is a perspective bitmap of 2 different angles, the efficiency is low, the 3D guiding effect is poor, and the use of C-arm can bring continuous radiation to medical personnel and patients.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a positioning tool for a foreign body in a deep jaw face, which has a simple structure and is convenient to use, and a use method thereof.
In order to achieve the purpose, the technical scheme is that the foreign matter positioning tool comprises a biting plate sleeved on the maxillary dentition of a human body and a guide rod in contact with the foreign matter, wherein the guide rod comprises a positioning rod for positioning the foreign matter, a connecting block and a steering head, one side of the biting plate, which is close to the cheek of the human body, is provided with a connecting device for fixing the connecting block, the connecting device is provided with a first connecting hole, the connecting block is provided with a fixing column matched with the first connecting hole, one side surface of the steering head is provided with a first jack for fixing the positioning rod, and the steering head can rotate along the horizontal direction on the connecting block.
The position of the foreign body on the jaw is determined according to X-ray, CT, MRI, C-arm and other examination image data before the operation of a patient, the operation is designed, the positioning information before the operation is transferred to the operation, in the operation process, along with the requirements of the operation process, the angle pointed by the positioning rod can be adjusted in real time through the steering head, and the positioning rods with different lengths are replaced at any time through the first jack, so that the positioning rod 23 respectively guides the initial incision of the operation, the soft tissue stripping direction and the position of the foreign body, the real 3D navigation is realized, the whole process has no radiation, no hardware equipment requirement is required for a medical institution, and meanwhile, the positioning tool has few parts, low production and use cost, simple placement process in the operation, high operation efficiency and operation time saving.
Preferably, the steering head is provided with a mounting groove which can be sleeved on the connecting block, hemispherical protruding blocks are arranged on vertical opposite faces in the mounting groove, and hemispherical grooves matched with the hemispherical protruding blocks are arranged on vertical opposite faces on the connecting block.
Through the cooperation of mounting groove, hemisphere lug and hemisphere recess, utilize full mechanical structure to let turn to the head and can rotate on the connecting block, reduction in production cost is low, makes simultaneously and simply.
Preferably, a space is arranged between the bottom of the mounting groove and the connecting block.
The distance between the bottom of the mounting groove and the connecting block is larger than the distance between the groove and the side, close to the big teeth of the human body, of the connecting block, so that the sufficient distance between the connecting block and the steering head is ensured for the steering head to rotate and adjust on the connecting block.
Preferably, the connecting block is close to the face of last dentition and lower dentition and all is equipped with the arc guide way, just the arc guide way is close to one side of human big tooth, the mounting groove with the position that the arc guide way corresponds is equipped with the screw thread guiding hole, just the screw thread guiding hole is close to lower dentition one side, be equipped with the screw rod in the screw thread guiding hole, just the screw rod can slide in the arc guide way.
Utilize the setting of screw rod, screw thread guiding hole and arc guide way, wherein the face of arc guide way and screw rod terminal surface contact is narrow, keep away from the face width of screw rod terminal surface contact, can lock the steering head after the screw rod is deep, after the angle modulation who turns to the head, will turn to the head and lock the position on the connecting block, can avoid the problem that the position slip at the operation in-process locating lever caused the position accuracy to reduce in the art, the tip of screw rod can slide in the arc guide way simultaneously, when the angle of turning to the head on the connecting block needs to be adjusted, reduce the regulation resistance who turns to the head.
Preferably, the connecting block is close to the arc-shaped guide groove and is provided with a marking area on one side close to the big teeth of the human body, the groove wall of the mounting groove is provided with a pointer matched with the marking area, and the marking area is provided with a marking point matched with the pointer.
The marking area is used for recording foreign matter information, the angle of the steering head rotating in the arc-shaped guide groove is recorded, the marking area and the pointer are arranged, the auxiliary effect is achieved when the position of the steering head is regulated, the position of the steering head which needs to be rotated every time in the operation process is marked in the marking area according to the operation designed before the operation, and the angle of the steering head at the connecting block is regulated through the pointer, so that the precision of regulating the steering head every time is higher.
The application method of the positioning tool for the foreign matters deep in the maxillofacial region comprises the following steps:
And 1, recording position information between the foreign body and the jawbone through multi-layer spiral CT shot before operation of a patient.
And 2, obtaining an STL digital dental model by using an optical scanner before operation, matching the dental model with dental information of CT data to obtain a jaw model with high-precision maxillary dental columns, and manufacturing a digital bite plate which can cover the maxillary dental columns of a patient, wherein the bite plate at least needs to cover half of the dental columns on the affected side, and the thickness is more than 5mm.
And 3, designing based on preoperative CT and a tooth model, wherein the preoperative CT and tooth model consists of a biting plate, a connecting device and a guide rod, and the designed product is subjected to 3D printing and can be used for positioning the foreign matters by taking patient dentition as a reference.
And 4, covering the occlusal plate obtained in the step 3 on the maxillary dentition of the patient in operation, fixing the guide rod on the occlusal plate through the connecting device, and all the position information is in the sequence of 'foreign matters, jawbones, teeth, occlusal plates, connecting devices and guide rods'.
The beneficial effects of the invention are as follows:
1. In the surgical design process, the positioning information is transferred to the intraoperative operation by using the positioning rod in the use process by carrying out positioning in the imaging manner, no radiation is generated, no hardware equipment requirement is required for a medical institution, the intraoperative positioning process is simple, the cost is low, the efficiency is high, the surgical time is saved, and the real 3D navigation is realized.
2. Through setting up of turning to head, mark district and pointer, make the locating lever adjust the steering angle according to the position and the operation route that the foreign matter is located, satisfy different operation routes.
3. Through the setting of arc guide way, screw thread guiding hole and screw rod, will turn to the position lock of head on the connecting block and die, can avoid the problem that the position slip of locating lever caused the position accuracy to reduce in the operation in-process.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure of the connecting block of the present invention;
fig. 3 is a schematic view of the steering head of the present invention.
Reference numerals illustrate:
1. The device comprises a biting plate, 11, a connecting device, 2, a guide rod, 21, a connecting block, 210, a hemispherical groove, 211, a fixed column, 212, an arc-shaped guide groove, 213, a marking area, 214, a marking point, 22, a steering head, 221, a first jack, 222, a mounting groove, 223, a hemispherical protruding block, 224, a threaded guide hole, 225, a pointer, 23 and a positioning rod.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Example 1;
As shown in fig. 1-3, a positioning tool for foreign matters deep in the jaw surface comprises an occlusion plate 1 sleeved on the maxillary dentition of a human body and a guide rod 2 in contact with the foreign matters, wherein the guide rod 2 comprises a positioning rod 23 for positioning the foreign matters, a connecting block 21 and a steering head 22, a connecting device 11 for fixing the connecting block 21 is arranged on one side, close to the cheek of the human body, of the occlusion plate 1, a first connecting hole is formed in the connecting device 11, the connecting block 21 is provided with a fixing column 211 matched with the first connecting hole, one side surface of the steering head 22 is provided with a first inserting hole 221 for fixing the positioning rod 23, and the steering head 22 can rotate in the horizontal direction on the connecting block 21.
The position of the foreign matter on the jaw is determined according to X-ray, CT, MRI, C-arm and other examination image data before the operation of a patient, the operation is designed, the positioning information before the operation is transferred to the operation, in the operation process, along with the requirements of the operation progress, the angle pointed by the positioning rod 23 can be adjusted in real time by rotating the steering head 22, and meanwhile, the positioning rods 23 with different lengths are replaced at any time through the first jack 221, so that the positioning rods 23 respectively guide the initial incision of the operation, the soft tissue stripping direction and the position of the foreign matter, the real 3D navigation is realized, no radiation exists in the whole process, no hardware equipment requirement is required for a medical institution, meanwhile, the positioning tool has few parts, low production and use cost, simple placement process in the operation, high operation efficiency improvement and operation time saving.
In the above description, the steering head 22 has a mounting groove 222 that can be sleeved on the connecting block 21, the vertically opposite surfaces in the mounting groove 222 are all provided with hemispherical protrusions 223, the vertically opposite surfaces on the connecting block 21 are provided with hemispherical grooves 210 that are mutually matched with the hemispherical protrusions 223, and a space is provided between the bottom of the mounting groove 222 and the connecting block 21.
The steering head 22 is sleeved on the connecting block 21 through the mounting groove 222, the steering head 22 and the connecting block 21 are fixed with the groove 210 through the mutually matched protruding blocks 223, the protruding blocks 223 can roll in the groove 210, the steering head 22 is fixed on the connecting block 21 through the connecting structure, the steering head 22 can rotate on the connecting block 21 by taking the protruding blocks 223 as the axle center, meanwhile, the distance between the bottom of the mounting groove 222 and the connecting block 21 is larger than the distance between the groove 210 and one side, which is close to the big teeth of a human body, of the connecting block 21 and the steering head 22, and the sufficient distance between the connecting block 21 and the steering head 22 is ensured for the steering head 22 to rotate and adjust.
In the above, the surface of the connecting block 21, which is close to the upper dentition and the lower dentition, is provided with the arc-shaped guide groove 212, and the arc-shaped guide groove 212 is close to one side of the human big dentition, the part of the mounting groove 222 corresponding to the arc-shaped guide groove 212 is provided with the thread guide hole 224, and the thread guide hole 224 is close to one side of the lower dentition, the screw is provided with the screw in the thread guide hole 224, and the screw can slide in the arc-shaped guide groove 212.
The region from the maxilla dentition to the mandible dentition is an operation region, after the adjustment position of each steering head 22 is determined, the screw rod is inserted into the arc-shaped guide groove 212 to lock the position of the steering head 22, the operation is guided, the problem that the position of the positioning rod 23 slides to cause the reduction of the positioning precision in the operation process can be avoided, meanwhile, the positioning rod 23 can adjust the angle, different operations and operation access ways can be met, the designed operation before the operation is performed, meanwhile, the end part of the screw rod can slide in the arc-shaped guide groove 212, and when the angle of the steering head 22 on the connecting block 21 needs to be adjusted, the adjustment resistance of the steering head 22 is reduced.
Example 2;
As shown in fig. 2 and 3, further, on the basis of embodiment 1, a marking area 213 is provided on a side of the connecting block 21, which is close to the arc-shaped guide groove 212 and is close to the big teeth of the human body, a pointer 225 which is matched with the marking area 213 is provided on a groove wall of the mounting groove 222, and a marking point 214 which is matched with the pointer 225 is provided on the marking area 213.
In the surgical design process, the angle of the steering head 22 which needs to rotate in the surgical process is determined through the positioning information on the basis of imaging, then a marking point 214 is made on a marking area 213 according to the surgical design before surgery, in the surgical process, when the steering head 22 needs to rotate, the angle of each rotation of the steering head 22 is determined through a pointer 225 and the marking point 214 which are arranged, and the steering head 22 is locked at the marking point 214 pointed by the pointer 225 through inserting a screw into the arc-shaped guide groove 212, so that the positioning accuracy is further improved.
The remaining operation principle of example 2 is the same as that of example 1.
Example 3;
As shown in fig. 1-3, a foreign matter positioning tool in depth of jaw surface comprises a bite plate 1 sleeved on the maxillary dentition of a human body and a guide rod 2 contacted with the foreign matter, wherein the guide rod 2 comprises a positioning rod 23 for positioning the foreign matter, a connecting block 21 and a steering head 22, a connecting device 11 for fixing the connecting block 21 is arranged on one side of the bite plate 1 close to the cheek of the human body, a first connecting hole is arranged on the connecting device 11, the connecting block 21 is provided with a fixing column 211 matched with the first connecting hole, one side surface of the steering head 22 is provided with a first inserting hole 221 for fixing the positioning rod 23, the steering head 22 can rotate along the horizontal direction on the connecting block 21, the steering head 22 is provided with a mounting groove 222 sleeved on the connecting block 21, and hemispherical convex blocks 223 are arranged on the vertical opposite surfaces in the mounting groove 222, the vertical opposite surface of the connecting block 21 is provided with a hemispherical groove 210 which is matched with the hemispherical convex block 223, a space is reserved between the groove bottom of the mounting groove 222 and the connecting block 21, the surfaces of the connecting block 21 close to the upper dentition and the lower dentition are provided with arc-shaped guide grooves 212, the arc-shaped guide grooves 212 are close to one side of the human big teeth, the positions of the mounting groove 222 corresponding to the arc-shaped guide grooves 212 are provided with thread guide holes 224, the thread guide holes 224 are close to one side of the lower dentition, a screw rod is arranged in the thread guide holes 224, the screw rod can slide in the arc-shaped guide grooves 212, one side of the connecting block 21 close to the arc-shaped guide grooves 212 and close to the human big teeth is provided with a marking area 213, the groove wall of the mounting groove 222 is provided with a pointer 225 which is matched with the marking area 213, the marking area 213 has marking points 214 thereon that interact with the pointer 225.
When in use, the position of the foreign matter on the jaw is determined according to the X-ray, CT, MRI, C-arm and other examination image data before the operation of a patient, the position of the connecting device 11 on the occlusal plate 1 is confirmed according to the position of the jaw where the foreign matter is located, the operation is designed according to the pre-operation image data, the position of the steering head 22 which needs to be rotated each time in the operation process is marked on the marking area 213 according to the pre-operation designed operation, when in use, the occlusal plate 1 matched with the dentition of the patient is sleeved on the maxillary dentition of the patient, then the positioning rod 23 is inserted into the first jack 221 of the steering head 22, the positioning rods 23 with different lengths can be continuously replaced according to the operation progress, the positioning rods 23 can respectively guide the initial incision of the operation, the stripping direction of soft tissues and the position of the foreign matter, the steering head 22 is sleeved on the connecting block 21 through the mounting groove 222, the steering head 22 and the connecting block 21 are fixed with the groove 210 through the mutually matched convex blocks 223, the convex blocks 223 can roll in the groove 210, the steering head 22 is fixed on the connecting block 21 through the connecting structure, the steering head 22 can rotate on the connecting block 21 by taking the convex blocks 223 as the axle center, along with the operation progress requirement, when the steering head 22 rotates, the adjusting angle of the steering head 22 on the connecting block 21 is determined through the pointer 225 by referring to the mark of the mark area 213 before operation, the adjusting precision of the steering head 22 each time is higher, after the position of the steering head 22 is determined, the screw is inserted into the arc-shaped guide groove 212 to lock the steering head 22 at the position of the mark point 214 on the mark area 213, the operation is guided, meanwhile, the positioning rod 23 can adjust the angle, different operations and operation paths can be satisfied, through the operation designed before operation, the degree of rotation of the steering head 22 on the connecting block 21 is based on the marking of the marking area 213 before operation, the foreign matters in the depth of the maxillofacial region are positioned by imaging, the bite plate 1, the connecting device 11 and the guide rod 2 are designed according to the dentition, all the position information is transferred to the positioning rod 23 which can be contacted with the foreign matters according to the sequence of 'foreign matters, jawbone, teeth, bite plate, connecting device and guide rod', the effect of assisting operation is finally played, the imaging positioning information is transferred to the actual operation without any radiation, no hardware requirement is required for medical institutions, the arranging process in operation is simple, the cost is low, the efficiency is high, the operation time is saved, and the real 3D navigation is realized.
The method for using the positioning tool for the foreign matter deep in the maxillofacial region in the above embodiments 1 to 3 includes the following steps:
And 1, recording position information between the foreign body and the jawbone through multi-layer spiral CT shot before operation of a patient.
And 2, obtaining an STL digital dental model by using an optical scanner before operation, matching the dental model with dental information of CT data to obtain a jaw model with high-precision dental columns, and manufacturing a digital bite plate 1 which can cover dental columns of a patient, wherein the bite plate at least needs to cover half of the dental columns on the affected side, and the thickness is more than 5mm.
And 3, designing based on preoperative CT and a tooth model, wherein the dental model consists of an occluding plate 1, a connecting device 11 and a guide rod 2, and the designed product is subjected to 3D printing and can be used for positioning the foreign matters by taking patient dentition as a reference.
Step 4, covering the occlusal plate 1 obtained in the step 3 on the dentition of a patient in operation, fixing the guide rod 2 on the occlusal plate 1 through the connecting device 11, and all the position information is in the sequence of 'foreign matter → jawbone → teeth → occlusal plate → connecting device → guide rod'.
The foregoing examples merely illustrate specific embodiments of the invention, which are described in greater detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.
Claims (2)
1. The utility model provides a foreign matter positioning tool in jaw face depths, its characterized in that includes the bite plate of cover setting up in human upper jaw dentition department and the guide arm that contacts with the foreign matter, the guide arm includes locating lever, connecting block and the turning to the head that is used for locating the foreign matter, bite plate is close to human cheek portion one side has the connecting device of fixed connecting block, the connecting device is last to have first connecting hole, the connecting block has with first connecting hole mutually supporting fixed column, one of them side of turning to the head has the second jack of fixing the locating lever, the turning to the head can rotate along the horizontal direction on the connecting block;
The steering head is provided with a mounting groove which can be sleeved on the connecting block, hemispherical convex blocks are arranged on vertical opposite surfaces in the mounting groove, and hemispherical grooves matched with the hemispherical convex blocks are arranged on vertical opposite surfaces on the connecting block;
A space is reserved between the bottom of the mounting groove and the connecting block;
The surface of the connecting block, which is close to the upper dentition and the lower dentition, is provided with arc-shaped guide grooves, the arc-shaped guide grooves are close to one side of the human big dentition, the positions of the mounting grooves, which correspond to the arc-shaped guide grooves, are provided with threaded guide holes, the threaded guide holes are close to one side of the lower dentition, a screw rod is arranged in the threaded guide holes, and the screw rod slides in the arc-shaped guide grooves;
the connecting block is close to the arc-shaped guide groove and is provided with a marking area on one side close to the big teeth of the human body, the groove wall of the mounting groove is provided with a pointer matched with the marking area, and the marking area is provided with a marking point matched with the pointer.
2. The method of using a maxillofacial deep foreign matter localization tool according to claim 1, comprising the steps of:
step 1, recording position information between foreign matters and jawbone through multi-layer spiral CT shot before operation of a patient;
step 2, obtaining an STL digital dental model by using an optical scanner before operation, matching the dental model with dental information of CT data to obtain a jaw model with high-precision maxillary dental columns, and manufacturing a digital bite plate which can cover the maxillary dental columns of a patient, wherein the bite plate at least needs to cover half of the dental columns on the affected side, and the thickness is more than 5mm;
Step 3, designing based on preoperative CT and tooth model, comprising a biting plate, a connecting device and a guide rod, wherein the designed product is subjected to 3D printing, and can be used for positioning the foreign matters by taking patient dentition as a reference;
And 4, covering the occlusal plate obtained in the step 3 on the dentition of the patient in operation, fixing the guide rod on the occlusal plate through the connecting device, and all the position information is in the sequence of 'foreign matters, jawbone, teeth, occlusal plate, connecting device and guide rod'.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911024035.8A CN110613475B (en) | 2019-10-25 | 2019-10-25 | A tool for locating foreign bodies in deep maxillofacial region and a method of using the tool |
| PCT/CN2019/114102 WO2021077450A1 (en) | 2019-10-25 | 2019-10-29 | Tool for positioning foreign body deep in maxillofacial region, and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911024035.8A CN110613475B (en) | 2019-10-25 | 2019-10-25 | A tool for locating foreign bodies in deep maxillofacial region and a method of using the tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110613475A CN110613475A (en) | 2019-12-27 |
| CN110613475B true CN110613475B (en) | 2025-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911024035.8A Active CN110613475B (en) | 2019-10-25 | 2019-10-25 | A tool for locating foreign bodies in deep maxillofacial region and a method of using the tool |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110613475B (en) |
| WO (1) | WO2021077450A1 (en) |
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| CN211155863U (en) * | 2019-10-25 | 2020-08-04 | 四川大学 | Foreign matter positioning tool in jaw face depth |
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