Tractor for oral and maxillofacial surgery

Abstract

The invention relates to the technical field of tractors for oral surgery, in particular to a retractor for oral maxillofacial surgery, which comprises a frame, a mounting rod and an adjusting mechanism. A mounting seat is arranged on the mounting rod, a first support is arranged on the mounting seat, an adjusting seat is movably mounted on the first support, and a traction rod and a buffer assembly are arranged on the adjusting seat; the adjusting mechanism is used for controlling the adjusting seat to slide on the first support. A guide rod, a limiting block and a first elastic piece are arranged on the mounting seat; a first ratchet bar is arranged on the mounting plate, the mounting plate is in sliding fit with the guide rod, the end, away from the mounting base, of the guide rod is connected with a limiting block, and the two ends of the first elastic piece are connected with the mounting plate and the limiting block respectively. The function of flexible adjustment of the traction force is achieved, the effect of adjusting the traction force of the traction rod is achieved through cooperation of the adjusting mechanism and the buffering assembly according to the operation requirement, and the technical problem that due to the fact that a traditional traction device lacks buffering in force adjustment, tissue damage is likely to be caused is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oral surgery retractor, in particular to an oral and maxillofacial surgery retractor. BACKGROUND

[0002] The oral and maxillofacial surgery retractor is a medical device for expanding the surgical field and protecting tissues. It is mainly used to retract oral tissues to expose the surgical area, making it easier for doctors to operate. However, the traditional retractor needs to pass the patient's head through the semi-circular structure when in use, and then needs to adjust the head position after the patient lies down, which is easy to cause discomfort to the patient.

[0003] Therefore, a kind of oral and maxillofacial surgery retractor is disclosed in Chinese patent with application publication number CN120131247A, which is symmetrically provided with front and rear adjusting units, lifting units and distraction units on the left and right sides of the base plate, and is an open structure, so that the patient can lie directly on the base plate from top to bottom when in use, improving the patient experience. The lifting unit and the front and rear adjusting unit are used to match the facial features of the patient, so as to facilitate the movement of the distraction unit to the optimal position of the patient's oral cavity.

[0004] However, the existing retractor still needs to adjust the patient's head position when in use, and needs to place the patient's head on the headrest. After completing the retraction action, the retraction force is fixed, and during the operation, if the patient's head moves slightly, the patient's tissue will be damaged due to excessive pulling. SUMMARY

[0005] To solve the above problems, a kind of oral and maxillofacial surgery retractor is provided, which solves the technical problem that the traditional retractor lacks buffer and is easy to cause tissue damage by adjusting the force through the rack, mounting rod, buffer assembly and adjusting mechanism.

[0006] To solve the problems in the prior art, the present application provides an oral and maxillofacial surgery retractor, comprising a rack, a mounting rod and an adjusting mechanism; the rack is provided with a base, and the mounting rod is installed on the base; the mounting rod is provided with a mounting seat, and the mounting seat is provided with a first support; the first support is movably installed with an adjusting seat; the adjusting seat is provided with a retraction rod and a buffer assembly; the retraction rod is connected with the adjusting seat through the buffer assembly; and the adjusting mechanism is used to control the sliding of the adjusting seat on the first support.

[0007] Preferably, the mounting seat is provided with a guide rod, a limiting block and a first elastic member; the adjusting mechanism comprises a mounting plate and an adjusting assembly; the mounting plate is provided with a first ratchet bar; the mounting plate is in sliding cooperation with the guide rod; the end of the guide rod away from the mounting seat is connected with the limiting block; and the two ends of the first elastic member are respectively connected with the mounting plate and the limiting block; and the adjusting assembly is used to drive the movement of the adjusting seat.

[0008] Preferably, the buffer assembly comprises a first connecting seat and a second elastic member; the first connecting seat is slidingly installed on the adjusting seat, and the pull rod is connected with the first connecting seat; the two ends of the second elastic member are connected with the adjusting seat and the first connecting seat respectively.

[0009] Preferably, the adjusting seat is provided with a convex scale bar; in the working state, the position of the first connecting seat is positioned through the scale bar.

[0010] Preferably, the adjusting assembly comprises a mounting shaft, a rotating gear, a fixed rack and a first rotating handle; the mounting shaft is rotationally arranged on the adjusting seat; the rotating gear is sleeved on the mounting shaft; the fixed rack is installed on the first support, and the rotating gear is meshingly connected with the fixed rack; the first rotating handle is fixedly sleeved on the mounting shaft.

[0011] Preferably, the bottom of the mounting rod is connected with a second connecting seat; the base is provided with two, the two bases are located at the two ends of the rack, the base is provided with a mounting hole matched with the second connecting seat, and the number of the mounting hole on each base is at least two.

[0012] Preferably, the second connecting seat is connected with a support rod, and the support rod is provided with a locking column; each mounting hole on the base is provided with a gap for the support rod to pass through, and each mounting hole is provided with a lock hole matched with the locking column; the base is provided with a liftable supporting plate, the supporting plate is provided with a third elastic member, and the two ends of the third elastic member are connected with the supporting plate and the base respectively.

[0013] Preferably, the first support is provided with a support plate, the support plate is rotationally provided with a first fastening bolt, and the first fastening bolt is fixedly sleeved with a second rotating handle.

[0014] Preferably, the mounting seat is slidingly matched with the mounting rod; the mounting seat is provided with a second fastening bolt; when the mounting seat is connected through the second fastening bolt, the mounting seat is fixed on the mounting rod through the friction force between the mounting seat and the mounting rod.

[0015] Preferably, the first support is slidingly matched with the mounting seat, and the mounting seat is provided with a second fastening bolt; when the second fastening bolt abuts against the first support, the first support is fixed through the friction force between the second fastening bolt and the first support.

[0016] The beneficial effects of the present application compared with the prior art are: 1. The present application realizes the function of flexible adjustment of pulling force by the rack, mounting rod, buffer assembly and adjusting mechanism, according to the operation requirements, the effect of adjusting the pulling force of the pulling rod is achieved through the cooperation of the adjusting mechanism and the buffer assembly, and the technical problem that the traditional pulling force adjustment lacks buffer and easily causes tissue damage is solved. When in use, the arched rack is first arranged above the head of the patient, the two sticking blocks are adjusted to be tightly attached to the two sides of the head of the patient to realize fixation, and the head of the patient does not need to be moved; then the adjusting seat is driven to slide on the first support through the adjusting mechanism, the pulling rod is driven to perform the pulling operation of the operation site, and the buffer assembly absorbs the excess pulling force through elastic deformation to avoid tissue damage. The arched rack is adapted to the contour of the head, and the sticking block fixation mode simplifies the preoperative preparation process, reduces unnecessary body position change of the patient, and cooperates with the flexible force adjustment of the buffer assembly, so that the stability and safety of the pulling operation are improved, and the convenience and practicality of the device in clinical use are enhanced.

[0017] 2. The present application realizes the precise positioning of the adjusting seat through the cooperation of the ratchet bar engagement and the elastic element, and solves the technical problem that the position adjustment steps of the traditional pulling device are complex and affect the operation rhythm. The operation is intuitive and labor-saving, cooperates with the head fixation function of the sticking block, significantly shortens the intraoperative adjustment time, and improves the smoothness of the operation operation while ensuring the stability of the pulling and the safety of the force.

[0018] 3. The present application solves the technical problems that the traditional pulling device is stiff in force adjustment and the pulling rod is complicated to replace through the elastic buffer of the second elastic element and the detachable design of the bolt connection. The pulling rod is connected with the first connecting seat through the second mounting bolt, and after use, the pulling rod can be quickly replaced through the second mounting bolt. When working, the adjusting mechanism drives the adjusting seat to move, the pulling rod is driven to pull the tissue through the first connecting seat, when the pulling force is too large, the second elastic element deforms to buffer the impact force, and tissue damage is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a perspective view of a pulling device for oral and maxillofacial surgery of the present application.

[0020] Figure 2 is a partial enlarged view of A in the Figure 1 of the present application.

[0021] Figure 3 is a perspective view of a mounting rod and adjusting mechanism of a pulling device for oral and maxillofacial surgery of the present application.

[0022] Figure 4 is a perspective view of a pulling rod, buffer assembly and adjusting mechanism of a pulling device for oral and maxillofacial surgery of the present application.

[0023] Figure 5 is a perspective view of a pulling device for oral and maxillofacial surgery of the present application.Figure 4 Partial enlarged view at B.

[0024] Figure 6 is a stereogram of a pulling rod and a buffer assembly of a pulling device for oral and maxillofacial surgery.

[0025] Figure 7 is a stereogram of a Figure 6 Partial enlarged view at C.

[0026] Figure 8 is a stereogram of an adjusting seat and a buffer assembly of a pulling device for oral and maxillofacial surgery.

[0027] Figure 9 is a stereogram of an adjusting seat, a first support, a mounting seat and an adjusting assembly of a pulling device for oral and maxillofacial surgery.

[0028] Figure 10 is a stereogram of a Figure 9 Partial enlarged view at D.

[0029] Figure 11 is a stereogram of a supporting plate, a third elastic member and a second connecting seat of a pulling device for oral and maxillofacial surgery.

[0030] In the figure, the reference signs are as follows: 1, frame; 11, base; 111, mounting hole; 112, notch; 113, lock hole; 12, second connecting seat; 121, supporting rod; 122, lock column; 13, supporting plate; 131, third elastic member; 2, mounting rod; 21, mounting seat; 211, guide rod; 212, limiting block; 213, first elastic member; 214, first mounting bolt; 215, second fastening bolt; 22, first support; 221, adjusting seat; 2211, scale bar; 222, pulling rod; 223, second ratchet bar; 224, supporting plate; 225, first fastening bolt; 226, second rotating handle; 23, buffer assembly; 231, first connecting seat; 232, second elastic member; 233, second mounting bolt; 3, adjusting mechanism; 31, mounting plate; 311, first ratchet bar; 312, straight handle; 32, adjusting assembly; 321, mounting shaft; 322, rotating gear; 323, fixed gear; 324, first rotating handle. DETAILED DESCRIPTION

[0031] In order to further understand the features, technical means and specific purposes and functions of the present application, the present application is described in further detail below in combination with the drawings and specific embodiments.

[0032] Reference is made to Figures 1-3The utility model provides an oral and maxillofacial surgery is with the traction device, including frame 1, installation rod 2 and adjusting mechanism 3, be provided with base 11 on frame 1, installation rod 2 is installed on base 11, be provided with mounting seat 21 on installation rod 2, be equipped with first support 22 on mounting seat 21, first support 22 is movably installed with adjusting seat 221, be equipped with traction rod 222 and buffer assembly 23 on adjusting seat 221, and traction rod 222 is connected with adjusting seat 221 through buffer assembly 23, adjusting mechanism 3 is used to control adjusting seat 221 sliding on first support 22.

[0033] The utility model discloses a frame 1, installation rod 2, buffer assembly 23 and adjusting mechanism 3 realize the function of the flexibility of the traction degree, according to the operation requirement, reach the effect of adjusting the traction degree of traction rod 222 through the cooperation of adjusting mechanism 3 and buffer assembly 23, solve the technical problem that traditional traction device lacks the buffer of the force degree adjustment and is easy to cause tissue damage. Two telescopic fitting blocks are arranged on the frame 1, the frame 1 is in the shape of an arch, and the fitting blocks are used to tightly fit the head of a patient during use. Therefore, the position of the head of the patient does not need to be adjusted, and only the position of the frame 1 needs to be adjusted. Thus, the problem that the traditional traction device needs to be frequently adjusted to cause complicated operation and easily cause discomfort of the patient is solved. In combination with the force degree adjustment function of the buffer assembly 23, the practicality and the operation safety of the device are further improved. Threaded barrels in the horizontal direction and the vertical direction are formed in the frame 1. During installation, the threaded barrels can be connected with the horizontal plate and the support of the operating bed from multiple directions through bolts. In order to improve the installation portability and the adaptability of the traction device, the frame 1 can be a telescopic frame body with adjustable length and height. During use, the arch-shaped frame 1 is arranged above the head of the patient. The two fitting blocks are telescoped to tightly fit the sides of the head of the patient to fix the head of the patient. The position of the head of the patient does not need to be moved. Then, the adjusting seat 221 is driven to slide on the first support 22 through the adjusting mechanism 3 to drive the traction rod 222 to perform traction operation on the operation site. The buffer assembly 23 absorbs the excess traction force through elastic deformation to avoid tissue damage. The arch-shaped frame 1 is adapted to the contour of the head. The fixing mode of the fitting blocks simplifies the preoperative preparation process, reduces unnecessary body position change of the patient, and, in combination with the flexible force degree adjustment of the buffer assembly 23, improves the stability and the safety of the traction operation, and enhances the convenience and the practicality of the device in clinical use.

[0034] Reference Figures 3-5 A guide rod 211, a limiting block 212 and a first elastic member 213 are arranged on the mounting seat 21. The adjusting mechanism 3 comprises a mounting plate 31 and an adjusting assembly 32. The mounting plate 31 is provided with a first ratchet strip 311. The mounting plate 31 is in sliding cooperation with the guide rod 211. The end of the guide rod 211, which is away from the mounting seat 21, is connected with the limiting block 212. The two ends of the first elastic member 213 are respectively connected with the mounting plate 31 and the limiting block 212. The adjusting assembly 32 is used to drive the adjusting seat 221 to move.

[0035] The present application realizes accurate positioning of the adjusting seat 221 through the cooperation of the ratchet bar engagement and the elastic element, and solves the technical problem that the position adjusting steps of the traditional traction device are complex and affect the operation rhythm. When operating, the operator first pulls the straight handle 312, drives the mounting plate 31 to slide along the guide rod 211 in the direction of the limiting block 212, compresses the first elastic element 213 to separate the first ratchet bar 311 from the second ratchet bar 223, and at this time the extension of the traction rod 222 to the appropriate length can be freely adjusted. After the straight handle 312 is loosened, the first elastic element 213 resets to push the mounting plate 31 downward, and the ratchet bars re-engage to realize position locking. After the traction rod 222 is in close contact with the oral tissue of the patient, the adjusting assembly 32 drives the adjusting seat 221 to move, the adjusting seat 221 drives the second ratchet bar 223 to move, the second ratchet bar 223 presses the first ratchet bar 311, and the first ratchet bar 311 drives the mounting plate 31 to move upward. At the same time, the first elastic element 213 is compressed and shrunk. At the same time, the adjusting seat 221 drives the traction rod 222 to complete the traction action through the buffer assembly 23, and the buffer assembly 23 synchronously adjusts the traction force to avoid tissue damage. The operation is intuitive and labor-saving, and the head fixing function of the fitting block is matched, which significantly shortens the intraoperative adjustment time, ensures the stability and safety of the traction force, and improves the smoothness of the operation.

[0036] Referring to Figure 4 , Figures 6-8 : The buffer assembly 23 includes a first connecting seat 231 and a second elastic element 232; the first connecting seat 231 is slidingly installed on the adjusting seat 221, and the traction rod 222 is connected with the first connecting seat 231; the two ends of the second elastic element 232 are connected with the adjusting seat 221 and the first connecting seat 231 respectively.

[0037] The present application solves the technical problems that the force adjustment of the traditional traction device is harsh and the replacement of the traction rod 222 is complicated through the elastic buffer of the second elastic element 232 and the detachable design of the bolt connection. The traction rod 222 is connected with the first connecting seat 231 through the second mounting bolt 233, and after use, the traction rod 222 can be quickly replaced through the second mounting bolt 233. When working, the adjusting mechanism 3 drives the adjusting seat 221 to move, and drives the traction rod 222 to pull the tissue through the first connecting seat 231, when the traction force is too large, the second elastic element 232 deforms to buffer the impact force, avoiding tissue damage; after the operation is completed, the second mounting bolt 233 is loosened to detach the traction rod 222, which is convenient for disinfection or replacement of different types of traction components. This structure not only realizes flexible control of the traction force through elastic buffer, but also simplifies the replacement process of the traction rod 222 through bolt connection, and cooperates with the head fixing function of the fitting block and the position locking function of the ratchet bar, which improves the safety of the operation, and enhances the adaptability and operation convenience of the device to different operation scenes.

[0038] Referring to Figure 6 and Figure 7The adjusting seat 221 is provided with a raised scale bar 2211; in the working state, the position of the first connecting seat 232 is located by the scale bar 2211.

[0039] This invention achieves precise positioning of the first connecting seat 231 through the scale bar 2211, solving the technical problem of traditional pullers lacking reference for force adjustment due to the inability to quantify the displacement of the buffer component 23. In the device, the adjusting seat 221 has a raised scale bar 2211. The first connecting seat 231 of the buffer component 23 slides on the adjusting seat 221. The pull rod 222 is connected to the first connecting seat 231 via a second mounting bolt 233. A second elastic element 232 connects the adjusting seat 221 and the first connecting seat 231. During operation, the adjusting mechanism 3 drives the adjusting seat 221 to move, and the pull rod 222 pulls the mechanism, causing the first connecting seat 231 to slide along the adjusting seat 221. The second elastic element 232 deforms accordingly. By observing the position of the first connecting seat 231 corresponding to the scale bar 2211, the operator can intuitively judge the displacement of the buffer component 23 and thus quantitatively evaluate the current pulling force. The raised design of the scale bar 2211 facilitates quick reading during surgery and avoids the impact of reflection or angle on observation. Combined with the flexible adjustment of the elastic buffer, the position locking of the ratchet bar, and the quick replacement function of the traction rod 222, the traction operation is more precise and controllable, further improving the safety and standardization of the surgery.

[0040] Reference Figure 4 , Figure 9 and Figure 10 The adjustment assembly 32 includes a mounting shaft 321, a rotating gear 322, a fixed rack 323, and a first rotating handle 324. The mounting shaft 321 is rotatably mounted on the adjustment seat 221. The rotating gear 322 is sleeved on the mounting shaft 321. The fixed rack 323 is mounted on the first support 22, and the rotating gear 322 is meshed with the fixed rack 323. The first rotating handle 324 is fixedly sleeved on the mounting shaft 321.

[0041] This invention achieves precise movement of the adjusting seat 221 through a gear and rack meshing adjusting component 32, solving the technical problems of large transmission clearance and inaccurate position control in traditional adjusting mechanisms 3. During operation, the operator rotates the first rotary handle 324, causing the mounting shaft 321 and the rotating gear 322 to rotate synchronously. Through the meshing transmission of the gear and the fixed rack 323, the adjusting seat 221 is driven to slide smoothly along the first support 22, achieving fine-tuning of the position of the traction rod 222. During adjustment, the scale bar 2211 displays the displacement status of the buffer component 23 in real time, facilitating control of the traction force. After adjustment, the first elastic element 213 pushes the mounting plate 31 to engage and lock the ratchet rack in position. The gear and rack transmission features precise transmission ratio and smooth operation. Combined with the labor-saving design of the first rotary handle 324, the traction position adjustment accuracy can reach the millimeter level, meeting the precise requirements of tissue traction in oral and maxillofacial surgery. Furthermore, in conjunction with elastic buffering and head fixation functions, it further improves the precision and safety of surgical operations.

[0042] Reference Figure 1 and Figure 2 The bottom of the mounting rod 2 is connected to a second connecting seat 12; there are two bases 11, which are located at both ends of the frame 1. The bases 11 are provided with mounting holes 111 that cooperate with the second connecting seat 12, and each base 11 has at least two mounting holes 111.

[0043] This invention achieves multi-position fixation of the mounting rod 2 through the cooperation of the second connecting seat 12 and multiple mounting holes 111, solving the technical problem of traditional traction devices having non-adjustable mounting positions that prevent adaptation to different surgical sites. In use, according to the needs of the surgical site, the second connecting seat 12 is inserted into different mounting holes 111 on the base 11 for fixation, thereby changing the overall position of the mounting rod 2 and the traction rod 222. Combined with the fine adjustment of the adjusting seat 221 by the adjusting mechanism 3, traction operations on different areas of the oral and maxillofacial tissues can be achieved. The multi-mounting hole 111 design allows the device to adapt to the anatomical structures of different patients and the needs of different surgical types. Combined with the precise transmission of gears and racks, the elastic buffer force control, and the head fixation function, the device's versatility is improved while maintaining the accuracy and safety of the traction operation. Furthermore, different numbers of mounting rods 2 can be installed according to surgical needs to perform traction at different angles.

[0044] Reference Figure 1 , Figure 2 and Figure 11The second connecting seat 12 is connected to a support rod 121, and the support rod 121 is provided with a locking pin 122; each mounting hole 111 on the base 11 is provided with a notch 112 for the support rod 121 to pass through, and each mounting hole 111 is provided with a locking hole 113 for cooperating with the locking pin 122; the base 11 is provided with a liftable support plate 13, and the support plate 13 is provided with a third elastic member 131, the two ends of the third elastic member 131 being connected to the support plate 13 and the base 11 respectively.

[0045] This invention solves the technical problems of unstable fixation or cumbersome disassembly and assembly of the mounting rod 2 after adjustment in multiple positions by using the insertion and engagement of the locking pin 122 and the locking hole 113 and the locking structure of the elastic support plate 13. In the device, the second connecting seat 12 connects to the support rod 121. The mounting hole 111 of the base 11 has a notch 112 for the support rod 121 to pass through. Locking holes 113 are provided around the mounting hole 111. The support plate 13 on the base 11 is connected by a third elastic element 131 to achieve lifting and lowering. During installation, the second connecting seat 12 is inserted into the target mounting hole 111 through the notch 112. The support plate 13 is pressed to retract the third elastic element 131. The second connecting seat 12 is rotated until the locking pin 122 aligns with the locking hole 113. After releasing the support plate 13, the third elastic element 131 pushes the support plate 13 upward, causing the second connecting seat 12 to move upward, allowing the locking pin 122 to engage with the locking hole 113, thus fixing the mounting rod 2. Disassembly is performed by reversing the operation. This structure enables the rapid locking and releasing of the mounting rod 2 at different positions, avoiding the cumbersome operation of traditional bolt fixing. Combined with the position adjustment function of the multiple mounting holes 111, the device can quickly adapt to different surgical needs, while ensuring the stable fixation of the mounting rod 2 during traction. In conjunction with the precise adjustment of gear transmission and the force control of elastic buffer, it further improves the efficiency and safety of surgical operations.

[0046] Reference Figure 3 , Figure 6 and Figure 8 The first support 22 is provided with a support plate 224, and a first fastening bolt 225 is rotatably provided on the support plate 224. A second rotating handle 226 is fixedly sleeved on the first fastening bolt 225.

[0047] This invention utilizes a secondary locking structure consisting of a first fastening bolt 225 and a second rotating handle 226 to address the risk of loosening that may occur when relying solely on ratchet engagement, ensuring the stability of the adjusting seat 221 throughout the surgical procedure. After the adjusting seat 221 is adjusted to the target position via the adjusting assembly 32 and positioned by the ratchet engagement, the operator rotates the second rotating handle 226, driving the first fastening bolt 225 to move towards and tighten towards the adjusting seat 221, forming a mechanically rigid lock. After the surgery, rotating the handle in the opposite direction releases the bolt, allowing for further position adjustment. This dual-positioning design, based on precise gear-driven adjustment, further eliminates the risk of positional displacement caused by intraoperative vibration or external forces. Combined with elastic buffer force control and the multi-position adjustment function of the mounting rod 2, it provides more reliable traction stability for oral and maxillofacial surgery, improving the safety and precision of the surgical procedure.

[0048] Reference Figure 3 and Figure 9 The mounting base 21 is slidably fitted with the mounting rod 2; the mounting base 21 is provided with a second fastening bolt 215; when the mounting base 21 is connected by the second fastening bolt 215, the mounting base 21 is fixed to the mounting rod 2 by the friction between the mounting base 21 and the mounting rod 2.

[0049] This invention solves the technical problem of traditional traction devices where the height and angle of the traction rod 222 are not adjustable, making them unsuitable for complex surgical sites, through the sliding engagement of the mounting base 21 and the mounting rod 2, and the frictional fixation of the second fastening bolt 215. In use, the second fastening bolt 215 is loosened, the mounting base 21 is slid along the mounting rod 2 to adjust its height, and the mounting base 21 is rotated to adjust its angle, aligning the traction rod 222 with the target traction area. After adjustment, the second fastening bolt 215 is tightened, and the mounting base 21 is securely fixed through the friction between the bolt and the mounting rod 2. This design allows the traction rod 222 to adapt to the tissue traction needs at different depths and angles in the oral and maxillofacial region. Combined with the fine adjustment of the gear rack, the elastic buffer force control, and the multi-position fixation function of the mounting rod 2, a multi-dimensional adjustable traction system is formed. This ensures operational flexibility while maintaining positional stability through friction locking, significantly improving the device's adaptability to complex surgical scenarios.

[0050] Reference Figure 3 and Figure 9 The first support 22 is slidably fitted with the mounting base 21, and the mounting base 21 is provided with a second fastening bolt 215; when the second fastening bolt 215 abuts against the first support 22, the first support 22 is fixed by the friction between the second fastening bolt 215 and the first support 22.

[0051] This invention solves the technical problem of insufficient surgical adaptability caused by the inability of traditional traction devices to adjust the traction position laterally through the sliding engagement of the first support 22 and the mounting base 21 and the friction locking of the second fastening bolt 215. In use, loosening the second fastening bolt 215 allows the first support 22 to slide along the mounting base 21, enabling lateral adjustment of the horizontal position of the traction rod 222 to precisely align it with the surgical site. After adjustment, tightening the second fastening bolt 215 provides stable fixation through the friction between the bolt and the first support 22. This lateral adjustment function, combined with the height and angle adjustment of the mounting base 21 and the multi-position fixation of the mounting rod 2, allows the traction rod 222 to be flexibly positioned in three-dimensional space. Combined with the precise transmission of the gear and rack and the elastic buffer force control, this further enhances the device's adaptability to the complex anatomy of the oral and maxillofacial region, ensuring the accuracy and convenience of traction operations during surgery. Furthermore, the first support 22 can be designed as an arc extending from a straight line, further improving adjustment flexibility. The first support 22, which extends in a straight line, can improve the traction stability and will not affect the traction direction of the traction rod 222 during adjustment.

[0052] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. A traction device for oral and maxillofacial surgery, characterized in that, The utility model relates to a kind of adjustable mounting rod, including rack (1), mounting pole (2) and adjusting mechanism (3);Base (11) is provided on rack (1), and mounting pole (2) is installed on base (11);Mounting seat (21) is provided on mounting pole (2), and first support (22) is equipped on mounting seat (21), and first support (22) is movably installed with adjusting seat (221), and pull rod (222) and buffer assembly (23) are equipped on adjusting seat (221), and pull rod (222) is connected with adjusting seat (221) by buffer assembly (23);Adjusting mechanism (3) is used to control adjusting seat (221) sliding on first support (22).

2. The oral surgery retractor of claim 1, wherein, Mounting seat (21) is equipped with guide rod (211), limiting block (212) and first elastic member (213);Adjusting mechanism (3) includes mounting plate (31) and adjusting assembly (32);First ratchet bar (311) is equipped on mounting plate (31), and mounting plate (31) is slidably connected with guide rod (211), and the end of guide rod (211) away from mounting seat (21) is connected with limiting block (212), and the both ends of first elastic member (213) are connected with mounting plate (31) and limiting block (212) respectively;Adjusting assembly (32) is used to drive adjusting seat (221) to move.

3. The oral surgery retractor of claim 1, wherein: Buffer assembly (23) includes first connecting seat (231) and second elastic member (232);First connecting seat (231) is slidably installed on adjusting seat (221), and pull rod (222) is connected with first connecting seat (231);The both ends of second elastic member (232) are connected with adjusting seat (221) and first connecting seat (231) respectively.

4. The oral surgery retractor of claim 3, wherein, Scale bar (2211) is equipped on adjusting seat (221);In working condition, the position of first connecting seat (231) is positioned by scale bar (2211).

5. The oral surgery retractor of Claim 2, wherein: Adjusting assembly (32) includes mounting shaft (321), rotating gear (322), fixed rack (323) and first rotating handle (324);Mounting shaft (321) is rotatably arranged on adjusting seat (221);Rotating gear (322) is sleeved on mounting shaft (321);Fixed rack (323) is installed on first support (22), and rotating gear (322) is meshingly connected with fixed rack (323);First rotating handle (324) is fixedly sleeved on mounting shaft (321).

6. The oral surgical retractor of any one of claims 1-5, wherein, The bottom of mounting pole (2) is connected with second connecting seat (12);Base (11) is equipped with two, two bases (11) are located at the both ends of rack (1), and mounting hole (111) that cooperates with second connecting seat (12) is formed in base (11), and the number of mounting hole (111) on each base (11) is at least two.

7. The oral surgery retractor of claim 6, wherein, A supporting rod (121) is connected to the second connecting seat (12), and a lock post (122) is arranged on the supporting rod (121); a notch (112) for the supporting rod (121) to pass through is arranged at each mounting hole (111) on the base (11), and a lock hole (113) for cooperating with the lock post (122) is arranged around each mounting hole (111); a supporting plate (13) that can be lifted up and down is arranged on the base (11), and a third elastic member (131) is arranged on the supporting plate (13), and two ends of the third elastic member (131) are connected with the supporting plate (13) and the base (11) respectively.

8. The oral surgery retractor of claim 6, wherein: A supporting plate (224) is arranged on the first supporting seat (22), and a first fastening bolt (225) is rotatably arranged on the supporting plate (224), and a second rotary handle (226) is fixedly sleeved on the first fastening bolt (225).

9. The oral surgery retractor of claim 1, wherein, The mounting seat (21) is in sliding cooperation with the mounting rod (2); the second fastening bolt (215) is arranged on the mounting seat (21); after the mounting seat (21) is connected through the second fastening bolt (215), the mounting seat (21) is fixed on the mounting rod (2) through the friction force between the mounting seat (21) and the mounting rod (2).

10. The oral surgery retractor of claim 1, wherein, The first supporting seat (22) is in sliding cooperation with the mounting seat (21), and the second fastening bolt (215) is arranged on the mounting seat (21); when the second fastening bolt (215) abuts against the first supporting seat (22), the first supporting seat (22) is fixed through the friction force between the second fastening bolt (215) and the first supporting seat (22).

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