CN216962590U - Individualized built-in LeFortIII type osteotomy distractor - Google Patents
Individualized built-in LeFortIII type osteotomy distractor Download PDFInfo
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- CN216962590U CN216962590U CN202122928065.0U CN202122928065U CN216962590U CN 216962590 U CN216962590 U CN 216962590U CN 202122928065 U CN202122928065 U CN 202122928065U CN 216962590 U CN216962590 U CN 216962590U
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Abstract
The utility model relates to the field of medical instruments, in particular to a personalized built-in LeFortIII type osteotomy distractor which comprises a traction groove, a traction groove inner rail, a bone connecting plate, a universal wheel joint and a traction rod, wherein the threaded end of the traction groove inner rail is arranged in the traction groove, one end of the bone connecting plate is screwed on the traction groove inner rail and is arranged in the traction groove, the other end of the bone connecting plate is exposed out of the traction groove and is connected with a skull, one end of the universal wheel joint is connected with the traction groove inner rail, the other end of the universal wheel joint is detachably connected with the traction rod, and the traction rod can be rotated to drive the traction groove inner rail to rotate so as to drive the bone connecting plate to move to one side along the traction groove inner rail to distract a bone. The utility model adopts the 3D printing guide plate to realize the positioning of the personalized distractor, accurately controls the angle direction and distance of the distraction, and simultaneously adopts the built-in distractor, which can reduce the inconvenience to the life of a patient caused by the 5 months of postoperative distraction maintenance and the exposure of the distractor.
Description
Technical Field
The utility model relates to the field of medical instrument tools, in particular to a personalized built-in LeFortIII type osteotomy distractor.
Background
For the treatment of craniofacial deformities of adult patients with Crouzon syndrome, one of the more common clinical methods at present adopts LeFortIII type osteotomy and external headstock traction osteogenesis treatment, so that middle bones in the face are migrated integrally, and the craniofacial deformities with insufficient development of middle bones in the face and prominent eyeballs are improved. For adult patients, the external head frame distractor seriously influences the daily social and life activities of the patients and brings great adverse effects on the physiology and the psychology of the patients. However, no built-in distractor of the skeletal medium in a distraction face with personalized precise positioning is currently available for clinical use.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a personalized built-in LeFortIII type osteotomy distractor, which adopts a 3D printing guide plate to realize the positioning of the personalized distractor and accurately control the angle direction and distance of distraction, and simultaneously is a built-in distractor, which can reduce the inconvenience to the life of a patient caused by the fact that the distraction is exposed after the operation for 5 months.
In order to achieve the purpose, the utility model adopts the technical scheme that: a personalized built-in LeFortIII type osteotomy distractor comprises a traction groove, a traction groove inner rail, a bone connecting plate, a universal wheel joint and a traction rod, wherein the threaded end of the traction groove inner rail is arranged in the traction groove, one end of the bone connecting plate is screwed on the traction groove inner rail and is arranged in the traction groove, the other end of the bone connecting plate is exposed out of the traction groove and is connected with a skull, one end of the universal wheel joint is connected with the traction groove inner rail, the other end of the universal wheel joint is detachably connected with the traction rod, and the traction rod can be rotated to drive the traction groove inner rail to rotate so as to drive the bone connecting plate to move to one side along the traction groove inner rail to retract bones.
Furthermore, the positioning guide plate is designed through preoperative virtual operations and manufactured through 3D printing, and is used for realizing positioning of the distractor and controlling the distraction osteogenesis angle direction and distance of the distractor.
Furthermore, the other end of the universal wheel joint is detachably connected with the traction rod through an embedded screw at the tail end of the traction rod.
Furthermore, a bone connecting plate at the front end of the distractor is integrally formed at the front end of the traction groove.
Furthermore, the thickness of the positioning guide plate is 1.5mm, and the size of the positioning guide plate is consistent with the bone surface shape of the tractor placing position in the virtual design of the operation.
The utility model has the following beneficial effects: the distractor is a special distractor for LeFortIII type osteotomy, is customized into a built-in type, is more attached to a human craniofacial skeleton, and is not exposed.
When the device is positioned in the distraction device operation, the accurate positioning is realized through the preoperative virtual operation design and the 3D printing positioning guide plate, the direction angle of partial bone distraction forward migration in the accurate control surface is ensured, and the operation effect is optimal.
The traction apparatus of the utility model is provided with the detachable traction rod, and when the traction rod is detached, the traction rod can be detached only by unscrewing the embedded screw at the tail end of the traction rod, so that the wound of a patient does not need to be cut open, and the pain of the patient is greatly relieved.
Drawings
FIG. 1 is a front view of a personalized built-in LeFortIII type osteotomy distractor according to an embodiment of the present invention;
fig. 2 is a back view of a personalized built-in lefort iii type osteotomy distractor according to an embodiment of the utility model.
Detailed Description
In order that the objects and advantages of the utility model will be more clearly understood, the utility model is further described in detail below with reference to examples. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
As shown in fig. 1-2, a personalized built-in LeFortIII type osteotomy distractor comprises a traction groove 1, a traction groove inner rail 2, a bone connecting plate 3, a universal wheel joint 4 and a traction rod 5, wherein the threaded end of the traction groove inner rail 2 is arranged in the traction groove, one end of the bone connecting plate 3 is screwed on the traction groove inner rail 2 and is arranged in the traction groove 1, the other end of the bone connecting plate is exposed out of the traction groove 1 and is connected with a skull, one end of the universal wheel joint 4 is connected with the traction groove inner rail 2, the other end of the universal wheel joint is detachably connected with the traction rod 5, the traction rod 5 is rotated to drive the traction groove inner rail to rotate, and further drive the bone connecting plate to move along the traction groove inner rail to one side to retract bones, generally, the adjustable range of the bone connecting plate, namely the length from the initial position to the end, is at least 25 mm; specifically, the traction rod is rotated to drive the inner rail of the traction groove to rotate along the threads in the traction groove, so that the bone connecting plate is driven to rotate, the telescopic adjustment of the position of the bone connecting plate is realized, and the bone is driven to move. The traction groove front end integrated into one piece has a distractor front end bone connecting plate 6 for with treat the target bone piece fixed that removes, still include through the design of virtual operation before the art and through the location baffle of 3D printing preparation for realize the location of distractor, control distractor stretch one-tenth bone angle direction and distance. The fixing direction of the bone connecting plate 6 at the front end of the distractor is determined by determining the moving direction of the bone (namely the placing direction of the distractor) in the preoperative virtual operation design, and the direction of the positioning guide plate can be determined according to the fixing direction of the bone connecting plate 6 at the front end of the distractor. The thickness of the positioning guide plate is 1.5mm, and the size of the positioning guide plate is matched with the surface shape of the bone at the placement position of the retractor in the virtual design of the operation.
In the embodiment, the other end of the universal wheel joint is detachably connected with the traction rod through the embedded screw at the tail end of the traction rod, when the traction rod is disassembled, the traction rod can be disassembled only by unscrewing the embedded screw at the tail end of the traction rod, a wound of a patient does not need to be cut open, and pain of the patient is greatly relieved.
In this embodiment, the bone connecting plate 3 is a titanium plate.
When the traction device is used for traction, the traction rod is rotated to drive the inner rail of the traction groove to rotate along the threads in the traction groove, so that the bone connecting plate is driven to rotate, the telescopic adjustment of the position of the bone connecting plate is realized, the bone is driven to move, and the bone connecting plate and the fixed end of the tractor generate relative movement to pull the bone.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (5)
1. A personalized built-in LeFortIII type osteotomy distractor is characterized in that: the traction groove is characterized by comprising a traction groove, a traction groove inner rail, a bone connecting plate, a universal wheel joint and a traction rod, wherein the threaded end of the traction groove inner rail is arranged inside the traction groove, one end of the bone connecting plate is screwed on the traction groove inner rail and is arranged inside the traction groove, the other end of the bone connecting plate is exposed out of the traction groove and is connected with a skull, one end of the universal wheel joint is connected with the traction groove inner rail, the other end of the universal wheel joint is detachably connected with the traction rod, the traction rod can be rotated to drive the traction groove inner rail to rotate, and then the bone connecting plate is driven to move to one side along the traction groove inner rail to pull out bones.
2. The personalized built-in LeFortIII type osteotomy distractor of claim 1, wherein: the positioning guide plate is designed through preoperative virtual operations and manufactured through 3D printing, and is used for realizing positioning of the distractor and controlling the distraction osteogenesis angle direction and distance of the distractor.
3. The personalized built-in LeFortIII type osteotomy distractor of claim 1, wherein: the other end of the universal wheel joint is detachably connected with the traction rod through an embedded screw at the tail end of the traction rod.
4. The personalized built-in LeFortIII type osteotomy distractor of claim 1, wherein: the front end of the traction groove is integrally formed with a bone connecting plate (6) at the front end of the distractor.
5. The personalized built-in LeFortIII type osteotomy distractor of claim 2, wherein: the thickness of the positioning guide plate is 1.5mm, and the size of the positioning guide plate is matched with the surface shape of the bone at the placement position of the retractor in the virtual design of the operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122928065.0U CN216962590U (en) | 2021-11-26 | 2021-11-26 | Individualized built-in LeFortIII type osteotomy distractor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122928065.0U CN216962590U (en) | 2021-11-26 | 2021-11-26 | Individualized built-in LeFortIII type osteotomy distractor |
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| CN216962590U true CN216962590U (en) | 2022-07-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114098931A (en) * | 2021-11-26 | 2022-03-01 | 中国人民解放军空军军医大学 | Individualized built-in LeFortIII type osteotomy distractor |
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2021
- 2021-11-26 CN CN202122928065.0U patent/CN216962590U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114098931A (en) * | 2021-11-26 | 2022-03-01 | 中国人民解放军空军军医大学 | Individualized built-in LeFortIII type osteotomy distractor |
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