CN220109822U - Jaw tractor with flexible shaft traction rod - Google Patents
Jaw tractor with flexible shaft traction rod Download PDFInfo
- Publication number
- CN220109822U CN220109822U CN202223501165.6U CN202223501165U CN220109822U CN 220109822 U CN220109822 U CN 220109822U CN 202223501165 U CN202223501165 U CN 202223501165U CN 220109822 U CN220109822 U CN 220109822U
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- Prior art keywords
- traction
- jaw
- screw
- flexible shaft
- rod
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- 230000008878 coupling Effects 0.000 claims description 20
- 238000010168 coupling process Methods 0.000 claims description 20
- 238000005859 coupling reaction Methods 0.000 claims description 20
- 238000005452 bending Methods 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 5
- 208000015181 infectious disease Diseases 0.000 abstract description 5
- 231100000241 scar Toxicity 0.000 abstract description 5
- 230000001720 vestibular Effects 0.000 abstract description 5
- 208000032544 Cicatrix Diseases 0.000 abstract description 4
- 230000001815 facial effect Effects 0.000 abstract description 4
- 230000037387 scars Effects 0.000 abstract description 4
- 210000000214 mouth Anatomy 0.000 description 10
- 210000000988 bone and bone Anatomy 0.000 description 7
- 238000005520 cutting process Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000011164 ossification Effects 0.000 description 3
- 230000003796 beauty Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Surgical Instruments (AREA)
Abstract
The utility model provides a jaw tractor with a flexible shaft traction rod, and belongs to the field of medical appliances. The jaw tractor comprises a jaw traction part and a flexible shaft traction rod, wherein the distal end of the flexible shaft traction rod is connected with the proximal end of the jaw traction part. The jaw tractor provided by the utility model is provided with the flexible shaft traction rod, the flexible shaft traction rod is variable in shape and good in flexibility, and can be penetrated out of a mouth and placed in the vestibular sulcus of a patient, so that the defects of high infection risk, influence on the appearance of the patient, and leaving facial scars and the like caused by the fact that the traction rod is exposed outside the body are effectively avoided.
Description
Technical Field
The utility model relates to the technical field of jaw tractors, in particular to a jaw tractor with a flexible shaft traction rod.
Background
The jaw traction osteogenesis is to apply specific traction force to the cut bone segment by a mechanical traction device, thereby prolonging or widening the jaw and correcting the development deformity or defect of the jaw. The traditional traction device consists of a traction device body and a non-bendable traction rod, wherein the traction device body is fixed on the jawbone surface during operation, and the traction rod is penetrated out of the body through the skin so as to facilitate traction. The external traction rod is exposed to contact with the external environment, so that the local infection risk is increased, the traction osteogenesis effect is affected, the scar of the maxillofacial skin is left after the traction rod is removed, and the beauty of a patient is affected.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present utility model solves the technical problem of providing a jaw tractor with a flexible shaft traction rod, wherein the flexible shaft traction rod has a variable shape and good flexibility, and can be inserted from the mouth and placed in the vestibular sulcus of the oral cavity of a patient, thereby effectively avoiding the defects of high infection risk, influence on the beauty of the patient, and leaving facial scars caused by the exposure of the traction rod to the outside.
To achieve the above and other related objects, the present utility model provides a jaw bone retractor including a jaw bone retractor portion and a flexible shaft retractor bar; the distal end of the flexible shaft traction rod is connected with the proximal end of the jaw traction part.
In a possible embodiment, the flexible shaft traction rod comprises a plurality of joint units; adjacent joint units are movably connected in the bending direction and propped against each other in the rotating direction.
In a possible embodiment, the articulation unit is provided with a plurality of male and a plurality of female connections; the convex connecting parts and the concave connecting parts of the adjacent joint units are connected in an adapting way;
and/or, the adjacent joint units are in mortise-tenon connection with gaps.
In one possible embodiment, the jaw traction portion includes a first screw and a traction plate portion screwed thereto, a second screw and a traction plate portion screwed thereto;
the proximal end of the first screw rod is connected with the flexible shaft traction rod, and the distal end of the first screw rod is connected with the proximal end of the second screw rod; and the thread directions of the first screw rod and the second screw rod are opposite.
In a possible embodiment, the jaw traction part further comprises a traction frame, wherein the traction frame is provided with a containing cavity, and the first screw and the second screw are arranged in the containing cavity;
the traction frame is provided with an opening part exposed out of the traction frame, and the opening part is communicated with the accommodating cavity;
and the traction frame is provided with a moving platform along the extending direction of the first screw rod and the second screw rod, and the opening part is arranged on the moving platform.
In a possible embodiment, the traction plate portion comprises a traction seat and a traction plate;
the traction seat is provided with a movable part and a connecting part, and the movable part is provided with a screw thread; the connecting part passes through the opening part and is movably arranged on the mobile platform, and the traction plate is detachably connected with the connecting part.
In a possible embodiment, the jaw traction portion further comprises a coupler, a distal end of which is connected to a proximal end of the first screw, and a proximal end is connected to the flexible shaft traction rod.
In one possible embodiment, the coupling comprises a first coupling body and a second coupling body; the first connector is fixedly connected with the first screw rod;
and two ends of the second connector are respectively connected with the first connector and the flexible shaft traction rod.
In a possible embodiment, the first coupling body and the second coupling body are detachably connected.
In a possible embodiment, the outer diameter of the flexible shaft traction rod is 2-5 mm; and/or the length of the flexible shaft traction rod is 30-50 mm; and/or the flexible shaft traction rod is made of medical metal or medical metal alloy.
As described above, the jaw tractor with the flexible shaft traction rod has the following beneficial effects:
1) The jaw tractor provided by the utility model is provided with the flexible shaft traction rod, the flexible shaft traction rod is variable in shape and good in flexibility, and can be penetrated out of a mouth and placed in the vestibular sulcus of a patient, so that the defects of high infection risk, influence on the appearance of the patient, and leaving facial scars and the like caused by the fact that the traction rod is exposed outside the body are effectively avoided.
2) The jaw tractor has simple and reasonable structure and convenient use.
Drawings
Fig. 1 is a schematic front view of a jaw retractor according to an embodiment of the present utility model.
Fig. 2 is a schematic view showing a rear structure of the jaw retractor according to the embodiment of the present utility model.
Fig. 3 shows an expanded view of a flexible shaft traction rod of the jawbone traction device according to an embodiment of the present utility model.
Fig. 4 is a schematic view showing a structure of the jaw tractor according to an embodiment of the present utility model after removing the traction frame and the flexible shaft traction rod.
Fig. 5 is an exploded view showing a jaw traction portion of the jaw traction device according to an embodiment of the present utility model after a traction frame is removed.
Fig. 6 is a schematic view showing an assembly structure of a traction plate portion and a traction frame of the jawbone traction device according to the embodiment of the present utility model.
Fig. 7 is a cross-sectional view showing a coupling of the jaw retractor according to an embodiment of the present utility model.
Description of the reference numerals
1. Jaw traction part
11. First screw rod
12. Second screw rod
13. Traction plate part
131. Traction seat
1311. Movable part
1312. Connecting part
132. Traction plate
14. Traction frame
141. Mobile platform
15. Coupling device
151. First connector
152. Second connector
2. Flexible shaft traction rod
21. Joint unit
211. Protruding connection part
212. Concave connecting part
Detailed Description
Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.
Please refer to the accompanying drawings. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the utility model, are not intended to be critical to the essential characteristics of the utility model, but are intended to fall within the spirit and scope of the utility model. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the utility model, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the utility model may be practiced.
The terms "proximal", "proximal portion" refer to the end that is proximal to the operator when the jaw retractor is in use, and also to the end that is distal to the patient; the terms "distal end", "distal portion" refer to the end that is remote from the operator when the jaw retractor is in use, and also refers to the end that is proximal to the patient. The positional or positional relationship indicated by "rear end", "both ends", "one end", "the other end", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and to simplify the description, and are not indicative or implying that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Referring to fig. 1-7, the jawbone tractor according to various embodiments of the present utility model includes a jawbone traction portion 1 and a flexible shaft traction rod 2, wherein a distal end of the flexible shaft traction rod 2 is connected to a proximal end of the jawbone traction portion 1. The flexible shaft traction rod can be made of the existing deformable material or flexible structural solid. The flexible shaft traction rod has variable shape and/or good flexibility, and can be penetrated out of the mouth and placed in the vestibule groove of the oral cavity of a patient, thereby effectively avoiding the defects of high infection risk, influence on the appearance of the patient, leaving facial scars and the like caused by the fact that the traditional jaw traction device is exposed to the external inflexible traction rod.
Preferably, the shaft drawbar has an outer diameter of 3mm and a length of 40mm, which is specifically tailored to the size of the vestibular sulcus of the oral cavity. The material is medical metal or medical metal alloy, and the medical titanium alloy material can be selected.
In a preferred embodiment, the flexible shaft traction rod 2 comprises a plurality of joint units 21, wherein adjacent joint units 21 are movably connected in the bending direction and abutted in the rotating direction. So as to meet the requirement that the flexible shaft traction rod 2 can transmit the rotation force to the screw rod of the traction part to rotate in the rotation direction; in the bending direction, the flexible shaft drawbar 2 composed of the plurality of joint units 21 can be bent so as to be placed in the vestibular sulcus of the patient's mouth.
In a specific embodiment, as shown in fig. 2, the joint unit 21 is provided with a plurality of protruding connection portions 211 and a plurality of recessed connection portions 212, and the protruding connection portions are connected in an adapting manner, and a certain gap is left between the connection portions to provide a space for bending movement. Specifically, the adjacent joint units 21 are mortise-tenon joint structures with gaps of 0.02-1 mm.
A method for manufacturing a joint unit 21 is provided, wherein a flexible shaft is formed by cutting a pipe by laser, namely, cutting a hollow metal rod by laser, wherein an unfolding schematic diagram of the hollow metal rod is shown in fig. 3, the laser cuts along a solid line in fig. 3, and a cutting gap is 0.02-1 mm, preferably 0.05mm. The clearance of laser cutting is the clearance of above-mentioned mortise and tenon joint structure.
In a preferred embodiment, as shown in fig. 4 and 5, the jaw traction portion 1 includes a first screw 11 and a traction plate portion 13 screw-coupled thereto, a second screw 12 and a traction plate portion 13 screw-coupled thereto. The proximal end of the first screw rod 11 is connected with the flexible shaft traction rod 2, the distal end is connected with the proximal end of the second screw rod 12, the thread directions of the first screw rod 11 and the second screw rod 12 are opposite, in the use process, the traction plate part 13 of the jaw tractor is fixed on the bone surfaces of two bone segments to be separated after bone cutting is completed, the flexible shaft traction rod penetrates out of the mouth, the traction rod is rotated to one side to drive the first screw rod 11 and the second screw rod 12 with opposite thread directions to rotate, so that the two traction plate parts 13 are far away from each other, namely, move to two sides simultaneously to separate the bone segments at two sides, and the osteotomy gap is increased. And rotating the traction rod to the other side can bring the two traction plate parts 13 closer to each other.
In a preferred embodiment, as shown in fig. 2 and 6, the jaw traction portion 1 further comprises a traction frame 14, the traction frame 14 being provided with a receiving cavity, in which the first screw 11 and the second screw 12 are provided. The traction frame 14 is provided with an opening portion exposed to the outside of the traction frame 14. The opening communicates with the accommodation chamber, and the traction frame 14 is provided with a moving platform 141 along the extending direction of the first screw 11 and the second screw 12, and the opening is provided in the moving platform 141. The traction frame 14 plays a role of bearing the screw rod and the traction plate part, so that the traction plate part 13 moves stably, and the damage to a patient caused by exposed threads is avoided.
In a preferred embodiment, as shown in fig. 4 and 5, the traction plate portion 13 includes a traction seat 131 and a traction plate 132, with nail holes provided thereon as needed. The fifth wheel 131 is provided with a movable portion 1311 and a connecting portion 1312. The movable portion 1311 has a screw thread, and is screwed to the first screw 11 or the second screw 12. The connection portion 1312 is movably disposed on the movable platform 141 through the opening portion, and the traction plate 132 is detachably connected to the connection portion 1312. The detachable connection mode can be a threaded connection mode or a plug-in mode, and the like, so that the traction plate 132 is convenient to replace.
In a preferred embodiment, as shown in fig. 2, 4 and 7, the jaw traction portion 1 further comprises a coupler 15, the distal end of the coupler 15 being connected to the proximal end of the first screw 11, the proximal end being connected to the flexible shaft traction rod 2. Specifically, the coupling 15 includes a first coupling body 151 and a second coupling body 152. The first coupling body 151 is fixedly coupled to the first screw 11 after being screwed to the first screw 11, for example, by laser welding.
In a preferred embodiment, the first coupling body 151 and the second coupling body 152 are detachably connected. Including but not limited to pinned, screw connections, etc.
The using method of the jawbone tractor of the embodiment comprises the following steps:
1) Positioning the osteotomy line and the nail hole according to the preoperative design and the printed osteotomy guide plate during traction osteogenesis operation;
2) After the osteotomy is finished, fixing the traction plate of the jaw tractor on the bone surface;
3) Penetrating out the flexible shaft traction rod from the mouth;
4) Rotating the flexible shaft traction rod to drive the first screw rod and the second screw rod to rotate, so that the two traction plate parts 13 move to two sides simultaneously to separate bone fragments at two sides, and the osteotomy gap is increased;
5) The flexible shaft traction rod is placed at the vestibule of the oral cavity.
The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (8)
1. A jaw tractor, which is characterized by comprising a jaw traction part (1) and a flexible shaft traction rod (2); the distal end of the flexible shaft traction rod (2) is connected with the proximal end of the jaw traction part (1);
the flexible shaft traction rod (2) comprises a plurality of joint units (21); adjacent joint units (21) are movably connected in the bending direction and propped against each other in the rotating direction;
the adjacent joint units (21) are in mortise-tenon connection with gaps, the joint units (21) are provided with a plurality of protruding connecting portions (211) and a plurality of recessed connecting portions (212), and the protruding connecting portions (211) and the recessed connecting portions (212) of the adjacent joint units (21) are in fit connection.
2. The jaw traction device according to claim 1, wherein the jaw traction portion (1) comprises a first screw (11) and a traction plate portion (13) screwed thereto, a second screw (12) and a traction plate portion (13) screwed thereto;
the proximal end of the first screw rod (11) is connected with the flexible shaft traction rod (2), and the distal end of the first screw rod is connected with the proximal end of the second screw rod (12); and the thread directions of the first screw (11) and the second screw (12) are opposite.
3. The jaw traction device according to claim 2, characterized in that the jaw traction portion (1) further comprises a traction frame (14), the traction frame (14) being provided with a receiving cavity, the first screw (11) and the second screw (12) being provided in the receiving cavity;
the traction frame (14) is provided with an opening part exposed out of the traction frame (14), and the opening part is communicated with the accommodating cavity;
and the traction frame (14) is provided with a moving platform (141) along the extending direction of the first screw (11) and the second screw (12), and the opening part is arranged on the moving platform (141).
4. A jaw distractor according to claim 3, wherein the distraction plate portion (13) comprises a distraction seat (131) and a distraction plate (132);
the traction seat (131) is provided with a movable part (1311) and a connecting part (1312), and the movable part (1311) is provided with a screw thread; the connecting part (1312) is movably arranged on the moving platform (141) through the opening part, and the traction plate (132) is detachably connected with the connecting part (1312).
5. A jaw traction device according to claim 3, wherein the jaw traction portion (1) further comprises a coupling (15), the distal end of the coupling (15) being connected to the proximal end of the first screw (11), the proximal end being connected to the flexible shaft traction rod (2).
6. The jaw retractor according to claim 5, wherein said coupling (15) comprises a first coupling body (151) and a second coupling body (152);
the first connector (151) is fixedly connected with the first screw (11);
two ends of the second connector (152) are respectively connected with the first connector (151) and the flexible shaft traction rod (2).
7. The jaw retractor according to claim 6, wherein said first coupling body (151) and said second coupling body (152) are detachably connected.
8. Jaw retractor according to any of claims 1-7, wherein the outer diameter of the flexible shaft drawbar (2) is 2-5 mm; and/or the length of the flexible shaft traction rod (2) is 30-50 mm; and/or the flexible shaft traction rod (2) is made of medical metal or medical metal alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223501165.6U CN220109822U (en) | 2022-12-27 | 2022-12-27 | Jaw tractor with flexible shaft traction rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223501165.6U CN220109822U (en) | 2022-12-27 | 2022-12-27 | Jaw tractor with flexible shaft traction rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220109822U true CN220109822U (en) | 2023-12-01 |
Family
ID=88888235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223501165.6U Active CN220109822U (en) | 2022-12-27 | 2022-12-27 | Jaw tractor with flexible shaft traction rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220109822U (en) |
-
2022
- 2022-12-27 CN CN202223501165.6U patent/CN220109822U/en active Active
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