Novel distraction device for oral and maxillofacial operation

Abstract

The invention relates to the technical field of medical instruments in the department of stomatology, and discloses a novel distraction device for oral and maxillofacial surgery, the novel distraction device comprises a mounting plate and an arc-shaped fixing seat fixedly arranged on the mounting plate, and the arc-shaped fixing seat is provided with a fixing mechanism and a distraction mechanism. The arc-shaped sleeve and the upper arc-shaped sleeve extend into the oral cavity of a patient by rotating the rotating block, then the patient is required to be matched with the arc-shaped sleeve to enable upper teeth and lower teeth to abut against tooth sockets in the upper arc-shaped sleeve and the lower arc-shaped sleeve respectively, then the pressing block is pressed, locking and limiting of the hand-twisting rotating rod are relieved, and the hand-twisting rotating rod is rotated to enable the lower arc-shaped sleeve to move. After the oral cavity of the patient is expanded to a proper size, a pressing block is loosened, a rotating rod is twisted by a hand to be automatically locked, the stability of a lower arc-shaped sleeve during expansion is ensured, and the problems that when an existing device is used for expanding by holding an expander by the hand, the labor is consumed, the stability is low, and the operation is inconvenient are solved. The soft tissue in the oral cavity of the patient is easily injured.

Description

Technical Field

[0001] The invention relates to the technical field of oral medical instruments, in particular to a novel distraction device for oral and maxillofacial surgery. Background Art

[0002] Oral and maxillofacial surgery is a discipline that focuses on surgical treatment and studies the oral organs (teeth, alveolar bones, lips, cheeks, tongue, palate, pharynx, etc.), facial soft tissues, maxillofacial bones (maxilla, mandible, zygomatic bone, etc.), temporomandibular joint, salivary glands, and the prevention and treatment of certain neck-related diseases. Because the patient's mouth is often in a closed state when medical staff perform oral surgery on the patient, the patient's cavity needs to be opened to make it more convenient for medical staff to perform surgery on the patient.

[0003] The China Patent Network discloses a novel dilator for oral and maxillofacial surgery, with publication number CN214804975U, comprising a first clamp and a second clamp, wherein a first connecting block is fixedly connected to the middle of the lower surface of the first clamp, a clamping plate is hinged to the bottom of one side of the first connecting block through a hinge, and a telescopic support is fixedly connected to the other side of the first connecting block.

[0004] The above-mentioned device has the effect of facilitating medical personnel to adjust the opening angle according to the surgical situation when performing surgery on patients, thereby facilitating medical personnel to perform the surgery. However, the device is opened by holding a expander by hand, which is manpower-consuming and has low stability, and is easy to cause damage to the soft tissue in the patient's mouth. When the patient's head moves, the expander will detach from the patient's mouth, affecting the surgical treatment effect. Therefore, it is necessary to provide a new type of expander device for oral and maxillofacial surgery. Summary of the invention

[0005] The purpose of the present invention is to provide a novel distraction device for oral and maxillofacial surgery to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a novel distraction device for oral and maxillofacial surgery, comprising a mounting plate and an arc-shaped fixing seat fixedly arranged on the mounting plate, wherein the arc-shaped fixing seat is respectively provided with a fixing mechanism and a distraction mechanism; the distraction mechanism comprises two fixing rods and a driving box, wherein the two fixing rods are provided with a slide groove, a first screw rod is rotatably connected in the front end slide groove, a ball nut is threadedly connected on the first screw rod, a limiting guide rod is fixedly arranged in the rear end slide groove, a slider is slidably connected on the limiting guide rod, connecting plates are fixedly arranged at both ends of the driving box, and a fixed roller is arranged between the connecting plate, the ball nut and the slider. There is a first connecting rod; the expansion mechanism also includes a driving box, a lower arc sleeve and an upper arc sleeve, the lower arc sleeve and the upper arc sleeve are both embedded with braces, the lower arc sleeve is fixedly provided with a tongue depressor, the driving box is fixedly connected with an adjusting box, a wedge-shaped groove is provided on the adjusting box, a second screw rod is rotatably connected in the wedge groove, a wedge-shaped nut is threadedly connected on the second screw rod, a second connecting rod is fixedly provided between the wedge nut and the lower arc sleeve, a supporting rod is fixedly provided between the upper arc sleeve and the adjusting box, a rotating rod is rotatably connected in the driving box, a hand-tightening rotating rod is rotatably connected on the driving box, and a locking component is provided in the hand-tightening rotating rod.

[0007] Preferably, a fixing belt is fixedly provided at one end of the arc-shaped fixing seat, a latex pad is fixedly provided on the arc-shaped fixing seat, the fixing mechanism includes a connecting plate, the connecting plate is fixedly provided at one end of the arc-shaped fixing seat away from the fixing belt, a fixing block is fixedly provided on the connecting plate, a rotating shaft is rotatably connected to the fixing block, a flip plate is fixedly provided on the rotating shaft, and a toothed plate is fixedly provided on the flip plate.

[0008] Preferably, a fixing plate is fixedly provided on the fixing rod, and the fixing plate is fastened to the arc-shaped fixing seat by bolts, the first screw rod rotatably passes through the front end slide groove and is fixedly provided with a rotating block, the second screw rod rotatably passes through the wedge-shaped groove and extends into the driving box, a first bevel gear set is transmitted between the second screw rod and the rotating rod, and a second bevel gear set is transmitted between the hand-tightening rotating rod and the rotating rod.

[0009] Preferably, the locking assembly in the hand-twisted rotating rod includes a sliding block, and a first movable cavity and a second movable cavity are respectively opened in the hand-twisted rotating rod. The sliding block is slidably connected to the first movable cavity, and a connecting groove is provided between the first movable cavity and the second movable cavity.

[0010] Preferably, a pressing block is fixedly provided on the sliding block, and the pressing block slides through the first active cavity. A wedge block is fixedly provided on the end of the sliding block away from the pressing block, and the wedge block is slidably connected to the connecting groove. A first spring is sleeved on the wedge block, and the first spring is fixedly provided between the first active cavity and the sliding block.

[0011] Preferably, a second spring is fixedly provided in the second movable cavity, a wedge-shaped slider is slidably connected in the second movable cavity, the wedge-shaped slider is fixedly connected to the second spring, and the wedge-shaped slider is extrusion-slidably connected to the wedge block.

[0012] Preferably, a clamping rod is fixedly provided on the wedge-shaped sliding block, a fixing ring is fixedly provided on the driving box, and a plurality of clamping grooves adapted to the clamping rod are provided in the fixing ring.

[0013] Preferably, a light strip is fixedly disposed in both the lower arc sleeve and the upper arc sleeve, wherein the light strip is a waterproof soft rubber light strip.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1) The novel distraction device for oral and maxillofacial surgery extends the arc sleeve and the upper arc sleeve into the patient's oral cavity by rotating the rotating block, and then requires and cooperates with the patient to respectively contact the upper and lower teeth with the braces in the upper and lower arc sleeves, and then presses the pressing block to release the locking limit of the hand-twisting rod, and rotates the hand-twisting rod to move the lower arc sleeve, so that the patient's mouth is gradually distracted. After the patient's mouth is distracted to an appropriate size, the pressing block is released, and the hand-twisting rod is automatically locked to ensure the stability of the lower arc sleeve when distracted, thereby solving the problem that the existing device distracts by holding the distractor by hand, which is labor-intensive and has low stability and is easy to cause damage to the soft tissue in the patient's oral cavity.

[0016] 2) The novel distraction device for oral and maxillofacial surgery uses a fixation belt to fix the patient's head, and then flips the flip plate to the same vertical position as the fixation belt. The toothed plate on the flip plate tightly holds the fixation belt to fix the fixation belt, thereby avoiding the problem that the distraction device will be detached from the patient's mouth due to the movement of the patient's head during oral and maxillofacial surgery, and the patient's mouth will need to be distracted again, affecting the efficiency of the operation. The fixation belt can ensure the fixation effect while being flexibly adjusted according to the patient's comfort to avoid causing discomfort to the patient and affecting the progress of the operation.

[0017] 3) The new distraction device for oral and maxillofacial surgery can move with the lower arc sleeve through the tongue depressor and press the patient's tongue to prevent the tongue from blocking the surgical site or affecting the surgical operation. The light strips arranged in the upper and lower arc sleeves can illuminate the inside of the patient's mouth during the surgical operation, thereby improving the visibility of the surgical operation, and improving the surgical efficiency and treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the opening device of the present invention;

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the arc-shaped fixing seat of the present invention;

[0020] Figure 3 For the present invention Figure 2 A magnified view of the structure at center A;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the fixing rod of the present invention;

[0022] Figure 5 It is a schematic cross-sectional structural diagram of the drive box of the present invention;

[0023] Figure 6 It is a schematic cross-sectional view of the hand-twisted rotating rod of the present invention;

[0024] Figure 7 It is a schematic structural diagram of the upper arc sleeve and the lower arc sleeve of the present invention.

[0025] In the figure: 1, mounting plate; 2, arc-shaped fixing seat; 3, latex pad; 4, fixing belt; 5, fixing mechanism; 501, connecting plate; 502, fixing block; 503, rotating shaft; 504, flip plate; 505, toothed plate; 6, opening mechanism; 601, fixing plate; 602, fixing rod; 603, first screw rod; 604, rotating block; 605, limiting guide rod; 606, driving box; 607, connecting plate; 608, ball nut; 609, slider; 610, first connecting rod; 611, rotating rod; 612, adjusting box; 613, second screw rod; 614, The first bevel gear set; 615, wedge nut; 616, second connecting rod; 617, lower arc sleeve; 618, upper arc sleeve; 619, braces; 620, support rod; 621, light strip; 622, tongue depressor; 623, hand-twisted turning rod; 624, second bevel gear set; 625, first movable cavity; 626, sliding block; 627, wedge block; 628, first spring; 629, pressing block; 630, connecting groove; 631, second movable cavity; 632, second spring; 633, wedge slider; 634, clamping rod; 635, fixing ring; 636, clamping groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Embodiment 1

[0028] Combination Figure 1-Figure 7The present invention provides a technical solution: a novel distraction device for oral and maxillofacial surgery, comprising a mounting plate 1 and an arc-shaped fixing seat 2 fixedly arranged on the mounting plate 1, and a fixing mechanism 5 and a distraction mechanism 6 are respectively arranged on the arc-shaped fixing seat 2.

[0029] See also Figure 2 and Figure 3 It is further obtained that a fixing belt 4 is fixedly provided at one end of the arc-shaped fixing seat 2, a latex pad 3 is fixedly provided on the arc-shaped fixing seat 2, the fixing mechanism 5 includes a connecting plate 501, the connecting plate 501 is fixedly provided at one end of the arc-shaped fixing seat 2 away from the fixing belt 4, a fixing block 502 is fixedly provided on the connecting plate 501, a rotating shaft 503 is rotatably connected to the fixing block 502, a flip plate 504 is fixedly provided on the rotating shaft 503, and a toothed plate 505 is fixedly provided on the flip plate 504.

[0030] See also Figure 4 It is further obtained that the expansion mechanism 6 includes two fixed rods 602 and a driving box 606, and the two fixed rods 602 are provided with a sliding groove, and a first screw rod 603 is rotatably connected in the front end sliding groove, and a ball nut 608 is threadedly connected to the first screw rod 603, and a limit guide rod 605 is fixedly arranged in the rear end sliding groove, and a slider 609 is slidably connected to the limit guide rod 605, and connecting plates 607 are fixedly arranged at both ends of the driving box 606, and a first connecting rod 610 is fixedly arranged between the connecting plate 607, the ball nut 608 and the slider 609.

[0031] See also Figure 5-Figure 7, it is further obtained that the expansion mechanism 6 also includes a driving box 606, a lower arc sleeve 617 and an upper arc sleeve 618, the lower arc sleeve 617 and the upper arc sleeve 618 are both embedded with a tooth brace 619, the lower arc sleeve 617 is fixedly provided with a tongue depressor 622, the driving box 606 is fixedly connected with an adjustment box 612, the adjustment box 612 is provided with a wedge-shaped groove, a second screw rod 613 is rotatably connected in the wedge-shaped groove, a wedge-shaped nut 615 is threadedly connected to the second screw rod 613, a second connecting rod 616 is fixedly provided between the wedge nut 615 and the lower arc sleeve 617, and a support rod 622 is fixedly provided between the upper arc sleeve 618 and the adjustment box 612. 20, a rotating rod 611 is rotatably connected in the driving box 606, a hand-tightened rotating rod 623 is rotatably connected on the driving box 606, a locking assembly is arranged in the hand-tightened rotating rod 623, a fixing plate 601 is fixedly arranged on the fixing rod 602, the fixing plate 601 and the arc-shaped fixing seat 2 are fastened and connected by bolts, the first screw rod 603 rotatably passes through the front end slide groove and is fixedly provided with a rotating block 604, the second screw rod 613 rotatably passes through the wedge-shaped groove and extends into the driving box 606, a first bevel gear set 614 is arranged for transmission between the second screw rod 613 and the rotating rod 611, and a second bevel gear set is arranged for transmission between the hand-tightened rotating rod 623 and the rotating rod 611 The locking assembly in the hand-twisted rotating rod 623 includes a sliding block 626. The hand-twisted rotating rod 623 is provided with a first movable cavity 625 and a second movable cavity 631. The sliding block 626 is slidably connected to the first movable cavity 625. A connecting groove 630 is provided between the first movable cavity 625 and the second movable cavity 631. A pressing block 629 is fixedly provided on the sliding block 626. The pressing block 629 slides through the first movable cavity 625. A wedge block 627 is fixedly provided on one end of the sliding block 626 away from the pressing block 629. The wedge block 627 is slidably connected to the connecting groove 630. A first spring 628 is sleeved on the wedge block 627. The first spring 628 is fixedly arranged between the first movable cavity 625 and the sliding block 626, the second spring 632 is fixedly arranged in the second movable cavity 631, a wedge-shaped slider 633 is slidably connected in the second movable cavity 631, the wedge-shaped slider 633 is fixedly connected to the second spring 632, the wedge-shaped slider 633 is extrusion-slidably connected to the wedge block 627, a clamping rod 634 is fixedly arranged on the wedge-shaped slider 633, a fixing ring 635 is fixedly arranged on the driving box 606, a plurality of clamping grooves 636 adapted to the clamping rod 634 are opened in the fixing ring 635, and a light strip 621 is fixedly arranged in both the lower arc sleeve 617 and the upper arc sleeve 618.

[0032] During the actual operation, firstly, the mounting plate 1 is mounted on the operating table with bolts, then the patient lies on the operating table and the patient's head is rested on the latex pad 3 of the arc-shaped fixing seat 2, then the fixing belt 4 is passed around the patient's forehead and passed between the flip plate 504 and the connecting plate 501, the fixing belt 4 is tightened so that the fixing belt 4 is in close contact with the patient's forehead, then the flip plate 504 is flipped to the same vertical state as the fixing belt 4, and the toothed plate 505 on the flip plate 504 is tightly buckled with the fixing belt 4, so as to fix the fixing belt 4, thereby fixing the patient's head, and avoiding the problem that the expander will be detached from the patient's mouth due to the movement of the patient's head during oral and maxillofacial surgery, and then the patient's mouth needs to be expanded again, which affects the efficiency of the operation. In addition, the fixing belt 4 can ensure the fixing effect while being able to be flexibly adjusted according to the patient's comfort, so as to avoid causing discomfort to the patient and affecting the progress of the operation;

[0033] The rotating block 604 is rotated to rotate the first screw rod 603, so that the ball nut 608 drives the drive box 606 to move under the action of the thread, and the slider 609 in the fixed rod 602 at the other end slides along the limiting guide rod 605, which can provide stability and guidance for the drive box 606 when it moves, and the drive box 606 is moved until the lower arc sleeve 617 and the upper arc sleeve 618 are extended into the patient's mouth, and then the patient is required to cooperate with the patient to respectively contact the upper and lower teeth with the braces in the upper arc sleeve 618 and the lower arc sleeve 617, and then press the pressing block 6 29, the sliding block 626 squeezes the first spring 628 and drives the wedge block 627 to move, the wedge block 627 squeezes the wedge slider 633, the wedge slider 633 squeezes the second spring 632 and drives the clamping rod 634 to retract, and the locking limit of the hand-twisted rotating rod 623 is released, and then the hand-twisted rotating rod 623 is rotated, and the rotating rod 611 starts to rotate under the transmission action of the second bevel gear set 624, and then the two second screw rods 613 are rotated under the transmission action of the first bevel gear set 614, so that the threads connected with the second screw rods 613 The connected wedge-shaped nut 615 can drive the lower arc sleeve 617 to move through the second connecting rod 616. As the lower arc sleeve 617 continues to move, the patient's mouth is gradually stretched open. After the patient's mouth is stretched to a suitable size, the pressing block 629 is released, the first spring 628 rebounds and drives the sliding block 626 and the wedge block 627 to reset, the second spring 632 rebounds and pushes the wedge slider 633 and the clamping rod 634 to reset, the clamping rod 634 pops out again and clamps with the corresponding clamping groove 636 in the fixing ring 635, so that the hand-twisted turning rod 6 23 can be automatically locked to ensure the stability of the lower arc sleeve 617 when it is opened, and then the oral and maxillofacial surgery can be started on the patient. When the patient's mouth is opened, the tongue depressor 622 can move with the lower arc sleeve 617 and press the patient's tongue to prevent the tongue from blocking the surgical site or affecting the surgical operation. The light strip 621 set in the upper arc sleeve 618 and the lower arc sleeve 617 can illuminate the inside of the patient's oral cavity during the surgical operation, thereby improving the visibility of the surgical operation, and improving the surgical efficiency and treatment effect;

[0034] Since the dental brace 619 is embedded in the lower arc sleeve 617 and the upper arc sleeve 618, the dental brace 619 can be easily disassembled after the operation, so that the dental brace 619 can be cleaned, disinfected or replaced separately, thereby improving the hygiene and safety of the device.

[0035] Other parts of the present invention not described in detail belong to the prior art and will not be described in detail here.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel distraction device for oral and maxillofacial surgery, comprising a mounting plate (1) and an arc-shaped fixing seat (2) fixedly arranged on the mounting plate (1), characterized in that: The arc-shaped fixing seat (2) is provided with a fixing mechanism (5) and an opening mechanism (6) respectively; The spreading mechanism (6) comprises two fixed rods (602) and a driving box (606), wherein the two fixed rods (602) are provided with a sliding groove, wherein a first screw rod (603) is rotatably connected in the front sliding groove, wherein a ball nut (608) is threadedly connected to the first screw rod (603), wherein a limit guide rod (605) is fixedly arranged in the rear sliding groove, wherein a slider (609) is slidably connected to the limit guide rod (605), wherein connecting plates (607) are fixedly arranged at both ends of the driving box (606), wherein a first connecting rod (610) is fixedly arranged between the connecting plate (607), the ball nut (608) and the slider (609); The spreading mechanism (6) further comprises a driving box (606), a lower arc sleeve (617) and an upper arc sleeve (618), wherein the lower arc sleeve (617) and the upper arc sleeve (618) are both embedded with a tooth brace (619), the lower arc sleeve (617) is fixedly provided with a tongue depressor (622), the driving box (606) is fixedly connected with an adjusting box (612), the adjusting box (612) is provided with a wedge-shaped groove, a second screw rod (613) is rotatably connected in the wedge-shaped groove, and the second screw rod (613) is rotatably connected in the wedge-shaped groove. A wedge-shaped nut (615) is threadedly connected to the screw rod (613); a second connecting rod (616) is fixedly arranged between the wedge-shaped nut (615) and the lower arc-shaped sleeve (617); a support rod (620) is fixedly arranged between the upper arc-shaped sleeve (618) and the adjustment box (612); a rotating rod (611) is rotatably connected inside the driving box (606); a hand-tightening rotating rod (623) is rotatably connected to the driving box (606); and a locking assembly is arranged inside the hand-tightening rotating rod (623).

2. A novel distraction device for oral and maxillofacial surgery according to claim 1, characterized in that: A fixing belt (4) is fixedly arranged at one end of the arc-shaped fixing seat (2), a latex pad (3) is fixedly arranged on the arc-shaped fixing seat (2), the fixing mechanism (5) comprises a connecting plate (501), the connecting plate (501) is fixedly arranged at one end of the arc-shaped fixing seat (2) away from the fixing belt (4), a fixing block (502) is fixedly arranged on the connecting plate (501), a rotating shaft (503) is rotatably connected to the fixing block (502), a flip plate (504) is fixedly arranged on the rotating shaft (503), and a toothed plate (505) is fixedly arranged on the flip plate (504).

3. A novel distraction device for oral and maxillofacial surgery according to claim 1, characterized in that: A fixing plate (601) is fixedly arranged on the fixing rod (602), and the fixing plate (601) is fastened to the arc-shaped fixing seat (2) by bolts. The first screw rod (603) rotatably passes through the front end sliding groove and is fixedly arranged with a rotating block (604). The second screw rod (613) rotatably passes through the wedge-shaped groove and extends into the driving box (606). A first bevel gear set (614) is transmitted between the second screw rod (613) and the rotating rod (611), and a second bevel gear set (624) is transmitted between the hand-tightened rotating rod (623) and the rotating rod (611).

4. A novel distraction device for oral and maxillofacial surgery according to claim 1, characterized in that: The locking assembly in the hand-twisted rotating rod (623) includes a sliding block (626), and a first movable cavity (625) and a second movable cavity (631) are respectively provided in the hand-twisted rotating rod (623). The sliding block (626) is slidably connected to the first movable cavity (625), and a connecting groove (630) is provided between the first movable cavity (625) and the second movable cavity (631).

5. A novel distraction device for oral and maxillofacial surgery according to claim 4, characterized in that: A pressing block (629) is fixedly arranged on the sliding block (626), and the pressing block (629) slides through the first active cavity (625). A wedge block (627) is fixedly arranged on one end of the sliding block (626) away from the pressing block (629), and the wedge block (627) is slidably connected to the connecting groove (630). A first spring (628) is sleeved on the wedge block (627), and the first spring (628) is fixedly arranged between the first active cavity (625) and the sliding block (626).

6. A novel distraction device for oral and maxillofacial surgery according to claim 5, characterized in that: A second spring (632) is fixedly arranged in the second movable cavity (631), a wedge-shaped slider (633) is slidably connected in the second movable cavity (631), the wedge-shaped slider (633) is fixedly connected to the second spring (632), and the wedge-shaped slider (633) is extrusion-slidably connected to the wedge block (627).

7. A novel distraction device for oral and maxillofacial surgery according to claim 6, characterized in that: A clamping rod (634) is fixedly arranged on the wedge-shaped sliding block (633), a fixing ring (635) is fixedly arranged on the driving box (606), and a plurality of clamping grooves (636) adapted to the clamping rod (634) are provided in the fixing ring (635).

8. The novel distraction device for oral and maxillofacial surgery according to claim 1, characterized in that: Light strips (621) are fixedly arranged in the lower arc-shaped sleeve (617) and the upper arc-shaped sleeve (618).

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