Fixing support for mandible operation

Abstract

The utility model belongs to the technical field of medical health instruments, and discloses a fixing support for mandible surgery, which comprises a cross rod, an L-shaped support and a pair of fixing feet, the pair of fixing feet are respectively fixed on two sides of a to-be-cut position of a mandible, polygonal bosses are arranged on the fixing feet, and the L-shaped support is fixed on the cross rod. Angle marking polygonal bosses are evenly arranged on the fixing feet in the circumferential direction corresponding to each section of the fixing feet, each L-shaped support is composed of a connecting rod and a marking adjusting block, one end of each connecting rod is movably connected with the transverse rod, and a polygonal groove and a direction mark are arranged on each marking adjusting block. The L-shaped support and the fixing foot are adjusted to a proper angle to be connected through the cooperation of the polygonal groove and the polygonal boss, the recording direction marks correspond to the angle mark positions, the transverse rod and the L-shaped support are integrally disassembled, and after the mandible is cut, the transverse rod and the L-shaped support are installed and reset with the fixing foot according to the recorded positions before cutting. The fixing support is convenient for a doctor to quickly reset and correct the section position of the mandible during a mandible operation.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical and health devices, and mainly relates to a fixing bracket for mandibular surgery. Background Art

[0002] The mandible is located in the lower part of the face and is a "horseshoe-shaped" single bone, surrounding the anterior and lateral walls of the oral cavity. It is the only movable bone in the face. Its horizontal part is the mandibular body, and its vertical part is the mandibular ramus. The surface layer is compact bone, and the interior is cancellous bone. It forms the temporomandibular joint with the articular fossa of the temporal bone. The mandibular body has inner and outer surfaces and upper and lower edges, and the mandibular ramus has two surfaces, four edges and two processes.

[0003] Precisely because of the special irregular shape of the mandible as a "horseshoe-shaped" single bone, in maxillofacial surgery, doctors need a lot of time to correct the position of the mandibular cross-section, which not only increases the surgical difficulty and workload of doctors, but also aggravates the pain of patients.

[0004] Therefore, there is an urgent need to develop a mandibular fixing bracket to facilitate doctors to quickly reset and correct the position of the mandibular cross-section during mandibular surgery. Summary of the Utility Model

[0005] To solve the above problems, the utility model provides a mandibular fixing bracket for temporarily fixing the mandible during surgery, which not only does not affect the normal operation of the surgery, but also facilitates doctors to quickly reset and correct the position of the mandibular cross-section during mandibular surgery, simplifies the surgical difficulty and workload of medical staff, reduces the pain of patients, and effectively improves the surgical efficiency and effect.

[0006] To achieve the above object, the utility model is realized by the following technical solutions:

[0007] A fixing bracket for mandibular surgery includes a cross bar, an L-shaped bracket and fixing feet. A pair of fixing feet are respectively fixed on both sides of the position to be cut on the mandible. The fixing feet are provided with polygonal bosses, and each cutting surface is circumferentially and uniformly provided with angular markings on the fixing feet. The L-shaped brackets are in pairs and are both composed of a connecting rod and a marking adjustment block to form an L shape. One end of the connecting rod is movably connected to the cross bar. The marking adjustment block is provided with a polygonal groove and a direction identifier. Before mandibular cutting, the L-shaped brackets and the fixing feet are adjusted to a suitable angle and connected through the cooperation of the polygonal groove and the polygonal boss, and the position corresponding to the direction identifier and the angular marking is recorded. Then the cross bar and the L-shaped brackets are disassembled as a whole. After mandibular cutting, the cross bar and the L-shaped brackets are installed and reset with the fixing feet according to the positions recorded before cutting.

[0008] Further, the inclination angles of the cutting surfaces of the polygonal grooves on the L-shaped brackets are adapted to the cutting surfaces of the polygonal bosses on the fixing feet.

[0009] Further, a through hole is provided on the marking adjustment block. One end inside the through hole of the marking adjustment block is provided with a thread, and the other end is provided with a polygonal groove. A threaded hole is provided at the center of the polygonal boss. The polygonal groove is installed on the polygonal boss, and the marking adjustment block of the L bracket is connected to the fixed foot through an L bracket screw.

[0010] Further, the direction identifier is provided at the end of the marking adjustment block.

[0011] Further, an adjusting device is further included. One end of the connecting rod is movably connected to the cross bar through the adjusting device.

[0012] Further, the adjusting device includes a pressing plate, a partition plate, and a fixing plate arranged in sequence. A fixing plate slot is provided on the fixing plate. The connecting rod is movably limited between the fixing plate and the partition plate through the fixing plate slot. A pressing plate slot is provided on the pressing plate. The cross bar is movably limited between the pressing plate and the partition plate through the pressing plate slot.

[0013] Further, threaded holes are provided at the centers of the pressing plate, the partition plate, and the fixing plate, and the three are connected by adjusting device screws.

[0014] Further, the width of the fixing plate slot is greater than the outer diameter of the connecting rod, and the depth of the fixing plate slot is less than the outer diameter of the connecting rod.

[0015] Further, the width of the pressing plate slot is greater than the outer diameter of the cross bar, and the depth of the pressing plate slot is less than the outer diameter of the cross bar.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] The present utility model provides a fixing bracket for mandibular surgery, which can position the reserved segment of the mandible before the resection surgery. Then, the cross bar and the L bracket are removed as a whole, and the connection between the L bracket and the fixed foot is released, without affecting the normal operation of the surgery. When the mandible is reconstructed and repaired, the L bracket and the fixed foot are reinstalled in the original marked direction to quickly find the correct position of the mandibular cross section, simplify the surgical difficulty and workload of medical staff, reduce the pain of patients, and effectively improve the surgical efficiency and effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. 1 is a schematic diagram of the first use position of a fixing bracket for mandibular surgery according to the present utility model;

[0019] Figure 2 FIG. 2 is a schematic diagram of the second use position of a fixing bracket for mandibular surgery according to the present utility model;

[0020] Figure 3Schematic diagram of the third usage position of a fixing bracket for mandibular surgery of the present utility model;

[0021] Figure 4 Schematic diagram of the structure of the L bracket of the present utility model;

[0022] Figure 5 Schematic diagram of the structure of the fixing foot of the present utility model;

[0023] Figure 6 Schematic diagram of the structure of the partition plate of the present utility model;

[0024] Figure 7 Schematic diagram of the structure of the pressing plate of the present utility model;

[0025] Figure 8 Schematic diagram of the structure of the fixing plate of the present utility model;

[0026] Figure 9 Schematic diagram of the cooperation between the L bracket and the fixing foot of the present utility model;

[0027] Figure 10 Schematic diagram of mandibular resection and reduction surgery;

[0028] Wherein: 1, cross bar; 2, L bracket; 201, polygonal groove; 202, direction mark; 203, connecting rod; 3, fixing foot; 301, polygonal boss; 302, angle mark; 4, partition plate; 401, partition plate mounting hole; 5, pressing plate; 501, pressing plate mounting hole; 502, pressing plate card slot; 6, fixing plate; 601, fixing plate card slot; 7, fixing foot screw;

[0029] 8, L bracket screw; 9, adjusting device screw. Specific embodiments

[0030] The following further clarifies the specific embodiments of the present utility model in conjunction with the accompanying drawings.

[0031] As Figures 1 to 9 shown, a fixing bracket for mandibular surgery includes a cross bar 1, an adjusting device, an L bracket 2 and a fixing foot 3. The fixing foot 3 is fixed on the mandible, one end of the L bracket 2 is movably connected to the fixing foot 3, and the other end is movably connected to the cross bar 1 through the adjusting device.

[0032] The fixing feet 3 are a pair, respectively fixed on both sides of the position of the mandible to be operated. The fixing feet 3 are integrally in a three-foot structure. One of the feet is provided with a polygonal boss 301. A threaded hole is provided at the center of the polygonal boss 301. The outer side of the polygonal boss 301 is a cut surface. Angle marks 302 are correspondingly arranged on the fixing feet 3 at the positions of each cut surface, for cooperating with the angle marks 302 on the L-shaped bracket 2. The number of the angle marks 302 is the same as the number of the cut surfaces of the polygonal boss 301. The other two feet are both stably fixed on the mandible through fixing foot screws 7.

[0033] The L-shaped brackets 2 are a pair, both composed of a connecting rod 203 and a marking adjustment block to form an L shape; the other end of the connecting rod 203 is sleeved in an adjusting device and connected to the cross bar 1. A through hole of the marking adjustment block is provided on the marking adjustment block. Threads are provided at the top inside the through hole of the marking adjustment block, and a polygonal groove 201 adapted to the polygonal boss 301 is provided at the bottom inside. A direction identifier 202 is provided at the end of the marking adjustment block, for corresponding to the angle mark 302.

[0034] To ensure the stable, firm and proper fit between the L-shaped bracket 2 and the fixing feet 3, the inclination angles of the cut surfaces inside the polygonal groove 201 on the L-shaped bracket 2 are adapted to the inclination angles of the cut surfaces outside the polygonal boss 301 on the fixing feet 3, so as to ensure the degree of fitting of the two cut surfaces. When the L-shaped bracket 2 and the fixing feet 3 are adjusted to a suitable matching angle, the polygonal boss 301 is snapped into the polygonal groove 201, and then the marking adjustment block of the L-shaped bracket 2 is connected to the fixing feet 3 through an L-shaped bracket screw 8.

[0035] For example, the outer surface of the boss of the polygonal boss 301 on the fixing feet 3 is evenly divided into four cut surfaces. Four angle marks 302, namely A, B, C, and D, are respectively arranged on the surface of the fixing feet 3 at the positions corresponding to each cut surface, and are evenly distributed in the circumferential direction. The inner groove surface of the polygonal groove 201 on the L-shaped bracket 2 is correspondingly evenly divided into four cut surfaces. The inclination angle of the cut surface of the polygonal boss 301 is adapted to the cut surface of the polygonal groove 201. According to the surgical needs, by adjusting the fitting of different cut surfaces of the polygonal boss 301 and the polygonal groove 201, the direction identifier 202 at the top of the marking adjustment block corresponds to different angle marks 302 on the fixing feet 3, so as to mark the correct position of the mandibular cross-section.

[0036] The cross bar 1 is a three-bend bar, and its two side cross bars are inclined relative to the middle cross bar, forming three cross bars with different angles, which is convenient for selecting different angles and positions during the operation to install the L-shaped bracket 2 through the adjusting device.

[0037] The adjusting device includes a pressing plate 5, a partition plate 4, a fixing plate 6 and an adjusting device screw 9. The partition plate 4 is arranged between the pressing plate 5 and the fixing plate 6, and threaded holes are provided at the centers of the three. The three are connected together by the adjusting device screw 9. A fixing plate clamping groove 601 is provided on the fixing plate 6. One end of the connecting rod 203 is limited between the fixing plate 6 and the partition plate 4 through the fixing plate clamping groove 601. The width of the fixing plate clamping groove 601 is greater than the outer diameter of the connecting rod 203, while the depth of the fixing plate clamping groove 601 is less than the outer diameter of the connecting rod 203, facilitating the axial sliding or circumferential rotation of the connecting rod 203 in the fixing plate clamping groove 601. A pressing plate clamping groove 502 is provided on the pressing plate 5. The cross bar 1 is limited between the pressing plate 5 and the partition plate 4 through the pressing plate clamping groove 502. The width of the pressing plate clamping groove 502 is greater than the outer diameter of the cross bar 1, while the depth of the pressing plate clamping groove 502 is less than the outer diameter of the cross bar 1, facilitating the axial sliding or circumferential rotation of the adjusting device on the cross bar 1, thereby adjusting the distance and angle between the L brackets 2. Moreover, the partition plate 4 and the fixing plate 6 can rotate circumferentially along the adjusting device screw 9, thereby adjusting the angle between the L bracket 2 and the cross bar 1.

[0038] In addition, the angle of the fixed foot 3 can be adjusted by the L bracket screw 8 to change the fitting angle between the L bracket 2 and the fixed foot 3.

[0039] When a surgery needs to be performed on the right mandible of a patient, taking Figures 1 to 3 as an example, according to the different positions of the mandible surgery, select a suitable position to set the fixed bracket for mandible surgery described in this embodiment.

[0040] The working process of the fixed bracket for mandible surgery described in this embodiment is as shown in Figure 10 :

[0041] Preliminarily install the fixed bracket for mandible surgery. The pressing plate 5, the partition plate 4 and the fixing plate 6 are stacked in sequence. The adjusting device screw 9 is in an untightened state. One ends of the cross bar 1 and the connecting rod 203 of the L bracket 2 are respectively movably limited in the pressing plate clamping groove 502 and the fixing plate clamping groove 601. At this time, the fixed foot 3 and the marking adjustment block of the L bracket 2 are in a separated state.

[0042] Fix the fixed feet 3 on both sides of the position to be cut on the mandible respectively. After determining the relative position and angle between the fixed foot 3 and the L bracket 2, tighten all the L bracket screws 8 and the adjusting device screws 9, then the position of the mandible bracket relative to the patient's mandible is fixed. Record the positions where the direction marks 202 provided on the two L brackets 2 respectively point to the angle marks 302 on the corresponding fixed feet 3. Loosen the L bracket screws 8, and remove the L brackets 8 and the cross bar 1 as a whole, only leaving the fixed feet 3 fixed on the mandible. At this time, the doctor can perform surgical operations on the mandible without interference.

[0043] After the actions related to the surgical cutting are completed, the overall removed L-shaped bracket 8 and cross bar 1 are fixed on the fixed foot 3 through the L-shaped bracket screws 8. It is required that the positions of the angle marks 302 provided on the fixed foot 3 pointed to by the direction marks 202 provided on the two L-shaped brackets 2 are consistent with the positions recorded before disassembly, ensuring that under the action of the entire mandibular bracket, the correct position of the mandibular cross-section can be quickly found, the divided mandible can be restored to the preoperative position, facilitating the doctor's next surgical operation, simplifying the surgical difficulty and workload of medical staff, reducing the patient's pain, and effectively improving the surgical efficiency and effect.

[0044] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fixing bracket for mandibular surgery, characterized in that: The invention comprises a cross bar (1), an L bracket (2) and a fixed foot (3), wherein a pair of fixed feet (3) are respectively fixed on both sides of the mandibular bone to be cut, and a polygonal boss (301) is provided on the fixed foot (3), and each cutting surface thereof corresponds to a polygonal boss (301) having an angle mark (302) uniformly arranged along the circumference on the fixed foot (3). The L bracket (2) is a pair, and each of the L brackets (2) is L-shaped and is composed of a connecting rod (203) and a mark adjustment block. One end of the connecting rod (203) is movably connected to the cross bar (1), and the mark adjustment block is The polygonal groove (201) and the direction mark (202) are set on the adjustment block. Before the mandibular bone is cut, the L bracket (2) and the fixed foot (3) are adjusted to a suitable angle connection through the cooperation of the polygonal groove (201) and the polygonal boss (301). The position of the angle mark (302) corresponding to the direction mark (202) is recorded, and the cross bar (1) and the L bracket (2) are disassembled as a whole. After the mandibular bone is cut, the cross bar (1) and the L bracket (2) are installed and reset with the fixed foot (3) according to the position recorded before cutting.

2. A fixing bracket for mandibular surgery according to claim 1, characterized in that: The inclination angle of the section of the polygonal groove (201) on the L bracket (2) matches the inclination angle of the section of the polygonal boss (301) on the fixed foot (3).

3. A fixing bracket for mandibular surgery according to claim 1, characterized in that: The mark adjustment block is provided with a mark adjustment block through hole, one end of the inner side of the mark adjustment block through hole is provided with a thread, and the other end is provided with a polygonal groove (201), a threaded hole is provided at the center of the polygonal boss (301), the polygonal groove (201) is installed on the polygonal boss (301), and the mark adjustment block of the L bracket (2) is connected to the fixed foot (3) through the L bracket screw (8).

4. A fixing bracket for mandibular surgery according to claim 1, characterized in that: The direction mark (202) is arranged at the end of the marking adjustment block.

5. The fixing bracket for mandibular surgery according to claim 1, characterized in that: It also includes an adjusting device, through which one end of the connecting rod (203) is movably connected to the crossbar (1).

6. A fixing bracket for mandibular surgery according to claim 5, characterized in that: The regulating device comprises a pressing plate (5), a partition (4) and a fixed plate (6) which are arranged in sequence; a fixed plate slot (601) is arranged on the fixed plate (6); the connecting rod (203) is movably limited between the fixed plate (6) and the partition (4) through the fixed plate slot (601); a pressing plate slot (502) is arranged on the pressing plate (5); the cross bar (1) is movably limited between the pressing plate (5) and the partition (4) through the pressing plate slot (502).

7. A fixing bracket for mandibular surgery according to claim 6, characterized in that: The centers of the pressing plate (5), the partition plate (4) and the fixing plate (6) are all provided with threaded holes, and the three are connected by adjusting device screws (9).

8. The fixing bracket for mandibular surgery according to claim 6, characterized in that: The width of the fixed plate slot (601) is greater than the outer diameter of the connecting rod (203), and the depth of the fixed plate slot (601) is less than the outer diameter of the connecting rod (203).

9. The fixing bracket for mandibular surgery according to claim 6, characterized in that: The width of the pressure plate slot (502) is greater than the outer diameter of the cross bar (1), and the depth of the pressure plate slot (502) is less than the outer diameter of the cross bar (1).

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