CN213722328U - Oral upper jaw bone tractor - Google Patents
Oral upper jaw bone tractor Download PDFInfo
- Publication number
- CN213722328U CN213722328U CN202021799787.XU CN202021799787U CN213722328U CN 213722328 U CN213722328 U CN 213722328U CN 202021799787 U CN202021799787 U CN 202021799787U CN 213722328 U CN213722328 U CN 213722328U
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- Prior art keywords
- sleeve
- traction plate
- fixed
- screw
- screw rod
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- 230000000694 effects Effects 0.000 claims abstract description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 210000002050 maxilla Anatomy 0.000 abstract description 17
- 210000000214 mouth Anatomy 0.000 abstract description 7
- 210000000216 zygoma Anatomy 0.000 abstract description 2
- 210000000988 bone and bone Anatomy 0.000 description 11
- 230000011164 ossification Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 210000001847 jaw Anatomy 0.000 description 2
- 210000004872 soft tissue Anatomy 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 206010010356 Congenital anomaly Diseases 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 206010052428 Wound Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000036770 blood supply Effects 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 210000004195 gingiva Anatomy 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
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Abstract
The utility model relates to an oral cavity internal maxillary tractor, which comprises a sleeve, a screw rod, a spiral tube, a movable traction plate and a fixed traction plate; the screw rod is rotatably arranged in the sleeve, one end of the screw rod extends out of the sleeve and is connected with the sleeve, the screw tube is slidably sleeved on the screw rod and is in threaded connection with the screw rod, the sleeve is provided with a sliding groove along the sliding direction of the screw tube, one side of the screw tube penetrates through the sliding groove and is fixedly connected with the movable traction plate, and one end of the sleeve, far away from the sleeve, is fixedly connected with the fixed traction plate; the fixed traction plate is in a runway shape and is provided with a plurality of first screw holes at intervals along the length direction of the fixed traction plate, the movable traction plate is of a U-shaped structure, and a plurality of second screw holes are arranged at intervals at the two ends of an opening of the movable traction plate along the direction of the side connected by the side direction of the opening. The surgeon can select the position of patient's maxilla bone wall thick cheekbone seam around or piriform hole edge to fix, and activity traction plate opening both ends all can be fixed on the free maxilla of back of cutting, form the fixed of face, and fixed firm is difficult for taking off.
Description
Technical Field
The utility model relates to an oral cavity maxillofacial surgery apparatus technical field particularly, relates to an oral cavity internal type maxilla tractor.
Background
The maxillary distractor has been widely used in oral maxillary surgery, and the application principle of the distractor can be summarized as follows: the soft tissues around the maxilla are firstly cut to expose the bone surface, after the maxilla is completely cut off, the broken ends of the bone are gradually spread by external force to form a gap, and the traction force is utilized to induce the osteogenesis capacity of the maxilla to continuously form new bone to fill the gap, so that the purpose of prolonging the maxilla is achieved. The technology utilizes the regeneration potential of organism tissues and can repair bone defects or defect deformities caused by various congenital or acquired reasons.
In the existing maxillary distractor, a fixing device for fixing the maxillary distractor to the maxillary bone in the oral cavity of a patient is unstable and easily loosens, resulting in deviation of the bone formation direction from an operation plan. For example, patent No. 201920800842.3 (publication No. 2020.06.05), a detachable jaw bone tractor, which comprises a rotating handle, wherein a cross block at the front end of the rotating handle is connected with a single fork through a long pin and a short pin, the single fork is connected with a tension screw, the tension screw is in threaded connection with a threaded cylindrical part of a movable wing, the tension screw goes deep into a tension body, the inner wall of the tension body is in contact with the outer cylindrical surface of the threaded cylindrical part of the movable wing, and the tension body is connected with a fixed wing; the fixed wing is a T-shaped three-hole fixed plate, and the movable wing is a strip-shaped four-hole fixed plate. The area of the T-shaped three-hole fixing plate is small, so that the tractor is difficult to fix around a zygomatic slit with a thick bone wall or at the edge of a piriform hole, and the tractor is easy to loosen. And only one rectangular four-hole fixing plate is fixed on the attached gingiva, so that the fixation is poor, the position of the retractor is easily changed, and the treatment effect is influenced.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide a fixed stable oral cavity type maxillary retractor.
In order to solve the technical problem, the utility model adopts the following technical scheme:
an oral maxillary retractor comprises a sleeve, a screw, a spiral tube, a movable traction plate and a fixed traction plate; the screw rod is rotatably arranged in the sleeve, one end of the screw rod extends out of the sleeve and is connected with the sleeve, the screw tube is slidably sleeved on the screw rod and is in threaded connection with the screw rod, the sleeve is provided with a sliding groove along the sliding direction of the screw tube, one side of the screw tube penetrates through the sliding groove and is fixedly connected with the movable traction plate, and one end of the sleeve, far away from the sleeve, is fixedly connected with the fixed traction plate; fixed traction plate is the runway shape and is provided with a plurality of first screw holes along its length direction interval, and the activity traction plate includes connecting plate and two fixed plates that set up respectively in the connecting plate both sides, and connecting plate and two fixed plate integrated into one piece constitute U type structure, and the connecting plate is connected with the screwed pipe, and the fixed plate is connected the side direction interval by the opening side direction and is provided with a plurality of second screw holes.
As a further improvement of the above technical solution:
first screw hole is 11, and the second screw hole is 6, and the distance between two adjacent first screw holes and the distance between two adjacent second screw holes are 3mm < L1<5 mm. Ensures that the surgeon can choose the position around the zygomatic suture or the edge of the piriform aperture with thicker maxillary bone wall of the patient for fixation.
Furthermore, the distance between the peripheries of the two fixing plates is 8mm < L2<10 mm. The distance between the peripheries of the two fixing plates is set according to the width of the incised free maxilla, so that the influence on the blood supply of the bone block caused by excessive stripping of the maxilla of the patient is avoided.
Furthermore, the two fixing plates are symmetrically arranged by taking the connecting part of the connecting plate and the solenoid as a center. The structural arrangement is reasonable, and the stress of the two fixing plates is uniform.
And a universal joint is arranged between the screw rod and the sleeve. The universal joint comprises a connecting joint and four connecting shafts, the four connecting shafts are uniformly arranged around the connecting joint to form a cross structure, a pair of oppositely arranged lug seats is arranged at one end of the screw rod and one end of the sleeve, and the four connecting shafts are respectively and rotatably connected with the two pairs of lug seats in a one-to-one correspondence manner. The connecting joint is a cube, and the four connecting shafts are respectively positioned at the centers of four side surfaces of the connecting joint and are integrally formed with the connecting joint. The sleeve can rotate to any angle around the connecting joint, and the operation efficiency is improved.
One end of the sleeve, which is far away from the universal joint, is provided with a connecting block for connecting a wrench, and the outer side wall of the connecting block is of a polygonal structure. The length of the sleeve is prolonged, and the sleeve is convenient to operate.
The movable traction plate and the fixed traction plate are made of pure titanium TA3 material.
Compared with the prior art, the utility model has the advantages that:
1. the fixed traction plate that above-mentioned maxillary bone tractor adopted is the runway shape and is provided with 11 first screw holes along its length direction interval, and the length of fixed traction plate and 11 first screw holes are favorable to the surgeon to select the position of patient's bone wall thicker cheekbone seam around or piriform hole edge to fix, and is fixed firm, difficult pine takes off.
2. The movable traction plate adopted by the maxillary tractor is of a U-shaped structure, the two fixing plates are fixed on the incised free maxillary bone, the fixing area is increased, the formed surface is fixed, and the fixation is stable.
Drawings
Fig. 1 is a schematic view of an intraoral maxillary retractor.
Fig. 2 is a schematic view of the structure of the movable traction plate.
Fig. 3 is a schematic view of the structure of the fixed traction plate.
Fig. 4 is a view showing a state where the screw and the sleeve are connected.
Fig. 5 is a view showing a state where the screw and the universal joint are connected.
Fig. 6 is a schematic structural view of the gimbal.
Description of reference numerals:
1. a sleeve; 2. a movable traction plate; 3. a solenoid; 4. a connecting member; 5. fixing a traction plate; 6. a screw; 7. a sleeve; 8. a universal joint; 9. an ear mount; 11. a chute; 21. a fixing plate; 22. a connecting plate; 23. a second screw hole; 41. a support plate; 42. a fixed tube; 51. a first screw hole; 71. connecting blocks; 81. a connecting shaft; 82. and connecting the joints.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the following detailed description of the present invention, taken in conjunction with the accompanying drawings and the detailed description, is given in a non-limiting manner.
As shown in fig. 1 to 6, the oral cavity built-in maxillary retractor of the present embodiment comprises a cannula 1, a screw 6, a screw tube 3, a movable traction plate 2 and a fixed traction plate 5; the screw 6 is rotatably arranged in the sleeve 1, one end of the screw 6 extends out of the sleeve 1 and is connected with a sleeve 7, the screw tube 3 is slidably sleeved on the screw 6 and is in threaded connection with the screw tube, the sleeve 1 is provided with a chute 11 along the sliding direction of the screw tube 3, one side of the screw tube 3 penetrates through the chute 11 and is fixedly connected with the movable traction plate 2, and one end of the sleeve 1, far away from the sleeve 7, is fixedly connected with the fixed traction plate 5; fixed traction plate 5 is the runway shape and is provided with a plurality of first screw holes 51 along its length direction interval, and activity traction plate 2 includes connecting plate 22 and sets up two fixed plates 21 in connecting plate 22 both sides respectively, and connecting plate 22 and two fixed plates 21 integrated into one piece constitute U type structure, and connecting plate 22 is connected with solenoid 3, and fixed plate 21 is connected the side direction interval by the opening side and is provided with a plurality of second screw holes 23. The number of the first screw holes 51 is 11, the number of the second screw holes 23 is 6, and the distance between two adjacent first screw holes 51 and the distance between two adjacent second screw holes 23 are both 3mm < L1<5 mm. The distance between the peripheries of the two fixing plates 21 is 8mm < L2<10 mm. The two fixing plates 21 are symmetrically arranged by taking the joint of the connecting plate 22 and the solenoid 3 as a center. The movable traction plate 2 and the fixed traction plate 5 are made of pure titanium TA3 material. Fixed traction plate 5 is connected with sleeve pipe 1 through connecting piece 4, and connecting piece 4 includes backup pad 41 and fixed pipe 42, backup pad 41 one side and fixed traction plate 5 fixed connection, opposite side and fixed pipe 42 fixed connection, fixed pipe 42 cover locate sleeve pipe 1 on and rather than fixed connection.
Wherein, a universal joint 8 is arranged between the screw rod 6 and the sleeve 7. The universal joint 8 comprises a connecting joint 82 and four connecting shafts 81, the four connecting shafts 81 are uniformly arranged around the connecting joint 82 to form a cross structure, a pair of oppositely arranged lug seats 9 is arranged at one end of each screw 6 and one end of each sleeve 7, and the four connecting shafts 81 are respectively and rotatably connected with the two pairs of lug seats 9 in a one-to-one correspondence mode. The connecting joint 82 is a cube, and the four connecting shafts 81 are respectively located at the centers of the four side surfaces of the connecting joint 82 and are integrally formed with the connecting joint. One end of the sleeve 7, which is far away from the universal joint 8, is provided with a connecting block 71 for connecting a wrench, and the outer side wall of the connecting block 71 is of a polygonal structure.
For the use of this example, reference is made to the following steps:
when the maxillary bone fracture fixator is used, firstly, the proper type of the maxillary bone tractor is selected and the installation position of the tractor is determined, the pre-tightening screws are always loose, the sleeve 7 can rotate along with the rotation of the screw rod, only the corresponding maxillary bone soft tissue is cut to expose the bone surface, the LeFort I type cuts the maxillary bone, and the fixed traction plate 5 is fixed around the zygomatic and maxillofacial suture on one side of the cut or on the edge of the piriform hole. Because the fixed traction plate 5 is in a runway shape and is provided with 11 first screw holes 51 at intervals along the length direction, an operator can select the positions around the zygomatic fissure with thicker bone wall of a patient or the edge of the piriform hole for fixing, and the fixation is stable. Then, the two fixing plates 21 of the movable traction plate 2 are fixed on the bone surface on the other side of the incision. And finally, after the fixed traction plate 5 and the movable traction plate 2 are positioned by the surgeon, the pretightening screws are screwed down.
During adjustment, the inner hexagon of the wrench is inserted into the connecting block 71 at one end of the sleeve 7, the wrench is rotated clockwise to drive the screw rod 6 to rotate, the movable traction plate 2 is forced to slide forwards or backwards relative to the screw rod 6 according to the threaded connection adjustment working principle of the screw rod 6 and the screw tube 3, the traction distance of each circle of rotation of the screw rod 6 is 0.4mm, a gap is generated, the traction force is utilized to induce the osteogenesis capacity of the jaw bone, new bone is continuously formed to fill the gap, the traction distance can be accurately and slowly adjusted through the thread transmission of the screw rod 6 and the screw tube 3, and traction is stopped after a clinical expected effect is achieved. The maxillary tractor is kept in the oral cavity of a patient for three months to half a year, the whole tractor is disassembled, and the maxillary wound is treated.
Claims (9)
1. An oral maxillary retractor is characterized in that: comprises a sleeve (1), a screw (6), a solenoid (3), a movable traction plate (2) and a fixed traction plate (5); the screw rod (6) is rotatably arranged in the sleeve (1), one end of the screw rod (6) extends out of the sleeve (1) and is connected with the sleeve (7), the solenoid (3) is slidably sleeved on the screw rod (6) and is in threaded connection with the screw rod, the sleeve (1) is provided with a sliding chute (11) along the sliding direction of the solenoid (3), one side of the solenoid (3) penetrates through the sliding chute (11) and is fixedly connected with the movable traction plate (2), and one end, far away from the sleeve (7), of the sleeve (1) is fixedly connected with the fixed traction plate (5); fixed traction plate (5) are the runway shape and are provided with a plurality of first screw holes (51) along its length direction interval, activity traction plate (2) are including connecting plate (22) and set up two fixed plates (21) in connecting plate (22) both sides respectively, connecting plate (22) and two fixed plates (21) integrated into one piece constitute U type structure, connecting plate (22) are connected with solenoid (3), fixed plate (21) are connected the side direction interval by the opening side direction and are provided with a plurality of second screw holes (23).
2. The intraoral maxillary retractor of claim 1 wherein: the number of the first screw holes (51) is 11, the number of the second screw holes (23) is 6, and the distance between every two adjacent first screw holes (51) and the distance between every two adjacent second screw holes (23) are both 3mm < L1<5 mm.
3. The intraoral maxillary retractor of claim 2 wherein: the distance between the peripheries of the two fixing plates (21) is 8mm < L2<10 mm.
4. The intraoral maxillary retractor of claim 3 wherein: the two fixing plates (21) are arranged in a central symmetry mode at the connecting position of the connecting plate (22) and the solenoid (3).
5. The intraoral maxillary retractor according to claim 1 or 4, wherein: and a universal joint (8) is arranged between the screw rod (6) and the sleeve (7).
6. The intraoral maxillary retractor of claim 5 wherein: universal joint (8) are including attach fitting (82) and four connecting axles (81), and four connecting axles (81) encircle attach fitting (82) and evenly set up and constitute cross structure, and screw rod (6) one end and sleeve (7) one end all are equipped with a pair of mutual disposition's ear seat (9), and four connecting axles (81) are rotatable respectively and two pairs of ear seats (9) one-to-one are connected.
7. The intraoral maxillary retractor of claim 6 wherein: the connecting joint (82) is a cube, and the four connecting shafts (81) are respectively positioned at the centers of four side surfaces of the connecting joint (82) and are integrally formed with the connecting joint.
8. The intraoral maxillary retractor of claim 1 wherein: one end of the sleeve (7) far away from the universal joint (8) is provided with a connecting block (71) used for connecting a wrench, and the outer side wall of the connecting block (71) is of a polygonal structure.
9. The intraoral maxillary retractor of claim 1 wherein: the movable traction plate (2) and the fixed traction plate (5) are made of pure titanium TA3 material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021799787.XU CN213722328U (en) | 2020-08-25 | 2020-08-25 | Oral upper jaw bone tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021799787.XU CN213722328U (en) | 2020-08-25 | 2020-08-25 | Oral upper jaw bone tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213722328U true CN213722328U (en) | 2021-07-20 |
Family
ID=76840520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021799787.XU Active CN213722328U (en) | 2020-08-25 | 2020-08-25 | Oral upper jaw bone tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213722328U (en) |
-
2020
- 2020-08-25 CN CN202021799787.XU patent/CN213722328U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231027 Address after: 315314 No.8, xiaotuanpu East Road, East Development Zone, Guanhaiwei town, Cixi City, Ningbo City, Zhejiang Province Patentee after: NINGBO CIBEI MEDICAL TREATMENT APPLIANCE CO.,LTD. Address before: 530021 No.10 Shuangyong Road, Qingxiu District, Nanning City, Guangxi Zhuang Autonomous Region Patentee before: COLLEGE OF STOMATOLOGY GUANGXI MEDICAL University |