CN115553960A - Traction type spreader for oral root tip operation - Google Patents

Abstract

The invention discloses a traction type distractor for oral cavity apex surgery, which comprises a support plate, wherein movable rods are detachably arranged on two sides of the support plate, the support plate is rotatably connected with the movable rods, a distraction component is detachably inserted into one end, far away from the support plate, of each movable rod, a connecting push rod for pushing the movable rods to rotate is detachably arranged on the adjacent side of each movable rod, and the connecting push rods are in an inclined state. Through detachable connection each other, be convenient for dismantle each spare part after using up, can carry out effectual disinfection and clearance to the activity region fully, avoid the regional germ that remains on the patient of activity switching, can carry out complete disinfection and clearance, disinfect and clear up the ware of strutting omnidirectionally, furthest reduces the condition of cross infection, provides more excellent treatment for the patient.

Description

Traction type distractor for oral root tip operation

Technical Field

The invention relates to the field of medical instruments, in particular to a traction type distractor for oral cavity apical surgery.

Background

The oral minimally invasive apical surgery is a common root canal surgical operation for treating pulposis and periapical diseases, is an operation which is carried out by an operator by using a microsurgical instrument through the assistance of an oral microscope, and mainly comprises the main steps of flap turning, bone removal, apical scraping, apical excision, apical preparation, apical filling, suturing and the like.

In recent years, along with the clinical popularization of oral microscopes and the clinical application of microsurgical instruments, the operability of the root tip operation is enhanced, the root tip sealing effect is continuously improved, and the success rate of the root tip operation is greatly improved. Although the use of oral microscopes and microscopic instruments can make the operation more delicate and minimally invasive, in order to fully expose the operation area as much as possible, silk threads or draw hooks are required to draw the wound edges at two sides in the operation, so that ischemia and swelling of surrounding tissues are inevitably caused, and the traumatic property of the operation is increased. Therefore, at present, it is urgently needed to add a soft tissue traction protection distractor which can protect soft tissues in the root tip operation, fully expose the operation area and is convenient to disassemble and sterilize on the basis of the original minimally invasive root tip operation instrument box.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides the traction type distractor for the oral cavity apical surgery, which can disinfect and clean the distractor in an all-around manner through the detachable connection of all parts, so that the situation that the distractor is not cleaned at a dead angle is prevented, the safety is improved, and the situation of cross infection is avoided to the maximum extent.

In order to solve the technical problems, the invention provides the following technical scheme: oral cavity apex of root operation is with towed spreader, including the extension board, the extension board both sides all dismantlement formula are provided with the movable rod, and the extension board rotates with the movable rod to be connected, the movable rod is kept away from the one end dismantlement formula of extension board and is pegged graft and have the part of strutting, the equal dismantlement formula of the adjacent side of movable rod sets up the connecting push rod that promotes the movable rod pivoted, connecting push rod is the tilt state, the dismantlement formula is provided with the movable plate that the level reciprocated between the connecting push rod, the connecting push rod both ends are rotated and are connected between movable rod and movable plate, the dismantlement formula is provided with the promotion part that promotes the movable plate and reciprocate between movable plate and the extension board.

According to a preferred technical scheme, the stretching component comprises an adjusting rod, a mucous membrane stretching plate and an inserting block with a square structure, a limiting slot for inserting the inserting block is formed in the top end of the movable rod, the top end of the adjusting rod is fixedly connected with the mucous membrane stretching plate, the bottom end of the adjusting rod is fixedly connected with the inserting block, a fixing nut is connected between the inserting block and the movable rod through threads, the adjusting rod is arranged in an arc structure and forms a ten-degree angle with a horizontal sight line, and the adjusting rod is used for better fitting the bone surface of a jaw bone.

According to a preferable technical scheme of the invention, the pushing component comprises a screw, the bottom end of the screw is of an I-shaped structure, the support plate is detachably provided with a sealing plate of a T-shaped structure for the screw to connect, a positioning bolt is in threaded connection between the sealing plate and the support plate, the support plate is provided with a positioning slot for the sealing plate to be inserted, and the sealing plate is provided with a threaded hole for the screw to be in threaded connection.

As a preferred technical scheme of the invention, the pushing component further comprises a positioning plate and a bearing, the positioning plate is fixedly connected to the periphery of the outer ring of the bearing, and the inner ring of the bearing is fixedly connected with the screw rod; the movable plate is provided with a limiting groove for the bearing to be inserted, and a limiting nut is in threaded connection between the movable plate and the positioning plate.

As a preferred technical scheme of the invention, one end of the connecting push rod is internally provided with a limiting part, the limiting part comprises a rotating shaft, a positioning nut fixedly connected to one end of the rotating shaft and a baffle fixedly connected to the other end of the rotating shaft, the movable rod is provided with a groove, the rotating shaft is rotatably connected in the groove, and the connecting push rod is rotatably connected to the periphery of the rotating shaft.

As a preferred technical scheme of the invention, the bottom end of the screw rod is detachably provided with an anti-slip rod for driving the threaded rod to rotate, and the anti-slip rod is sleeved at the bottom end of the screw rod.

As a preferred technical solution of the present invention, the screw bottom is detachably provided with a driving component for driving the screw to slide up and down, the driving component includes a rotating rod, a handrail and an elliptical plate, one end of the rotating rod is fixedly connected with the handrail, the other end of the rotating rod is fixedly connected with the elliptical plate, a sliding slot for the screw bottom to slide is formed in the periphery of the elliptical plate, and the cross section of the sliding slot is of a convex structure.

As a preferred technical scheme of the invention, the bottom end of the positioning bolt penetrates through the support plate and is connected with the reversing rod in a threaded manner, the reversing rod is provided with a guide groove for the elliptical plate to rotate, and the reversing rod is detachably provided with a limiting ring for supporting the rotating rod.

The operation method of the traction type distractor for the oral root tip operation comprises the following steps:

s1: installation: the longitudinal operation and the transverse operation are effectively rotated according to the direction of opening the incision, so as to prevent the sight of medical care personnel from being influenced, during the longitudinal operation, the movable rods are rotatably arranged at the two sides of the support plate through the limiting parts, the adjusting rods are inserted into the limiting slots and fixed by using the fixing nuts, the connecting push rods are rotatably arranged between the movable rods and the movable plate through the limiting parts, then the sealing plates are arranged on the support plate through the positioning bolts, the bearings are arranged on the movable plate, the movable plate is fixed by using the limiting nuts, the screw rods are in threaded connection with the sealing plates at the moment, and then the anti-skid rods are arranged at the bottom ends of the screw rods to complete the installation of the longitudinal operation; when the transverse operation is carried out, the anti-skidding rod and the sealing plate are disassembled, then the reversing rod is installed at the bottom end of the support plate through the positioning bolt, then the driving part is installed on the reversing rod, and the screw rod is inserted into the sliding groove at the moment to complete the installation of the transverse operation.

S2: opening: longitudinal operation: the mucosa opening plate can be opened by twisting the anti-slip rod;

and (3) transverse operation: the handrail is screwed to drive the elliptical plate to rotate, so that the long axis and the short axis of the elliptical plate are changed to push the screw rod to move up and down, and the mucous membrane opening plate is opened.

S3: disassembling: the oval plate is rotated, so that a notch of the oval plate for inserting the screw corresponds to the screw, then the positioning bolt is disassembled, and then the limiting nut, the fixing nut and the three limiting parts are disassembled, so that the whole equipment can be disassembled.

S4: cleaning: and after the equipment is disassembled, the parts are transported to the appointed disinfection space in a unified manner for disinfection.

Compared with the prior art, the invention can achieve the following beneficial effects:

1. the invention can select different forms of combination modes according to different operation areas in the oral cavity apical operation, so as to better adapt to the complex anatomical forms of the jaw and dentition, increase the application range, improve the operation efficiency and facilitate the operation of medical care personnel.

2. Through detachable connection each other, be convenient for dismantle each spare part after using up, can carry out effectual disinfection and clearance to the activity region fully, avoid the region of activity switching to remain the germ on the patient body, can carry out complete disinfection and clearance, disinfect and clear up the ware of strutting omnidirectionally, furthest reduces the condition of cross infection, provides more excellent treatment for the patient.

3. Through the setting of antiskid ribbed tile and driver part, be convenient for hold the direction of opening the ware according to the corresponding change medical personnel of patient's the condition to prevent influencing medical personnel's the sight of diagnosing, increase the security.

Drawings

FIG. 1 is a front view of the longitudinally operating distractor of the present invention;

FIG. 2 is a sectional view of the movable rod of the present invention;

FIG. 3 is a schematic view of a spacing member according to the present invention;

FIG. 4 is an exploded view of the moving plate and positioning member of the present invention;

FIG. 5 is an exploded sectional view of the support plate and the sealing plate of the present invention;

FIG. 6 is a front view of the laterally operating distractor of the present invention;

FIG. 7 is a schematic view of the elliptical plate structure of the present invention;

FIG. 8 is a front view of the obliquely operated distractor of the present invention.

Wherein: 1. a support plate; 11. positioning the slot; 2. a movable rod; 21. a groove; 22. limiting slots; 23. a limiting component; 231. a rotating shaft; 232. positioning a nut; 233. a baffle plate; 3. moving the plate; 31. connecting a push rod; 32. a limiting groove; 4. a distraction component; 41. adjusting a rod; 42. a mucosa opening plate; 43. inserting a block; 5. a pushing member; 51. a screw; 511. an anti-slip rod; 52. positioning a plate; 53. a bearing; 6. sealing plates; 61. a threaded hole; 62. positioning the bolt; 7. a reversing lever; 71. a limiting ring; 8. a drive member; 81. rotating the rod; 82. a handrail; 83. an elliptical plate; 831. a chute.

Detailed Description

The present invention will be further described with reference to specific examples, but the following examples are only preferred embodiments of the present invention, and not all embodiments of the present invention are intended to be included in the scope of the present invention. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.

Example 1

Referring to fig. 1 and 4, the invention provides a traction type distractor for oral cavity apex surgery, which comprises a support plate 1, wherein movable rods 2 are detachably arranged on both sides of the support plate 1, the support plate 1 is rotatably connected with the movable rods 2, a distraction part 4 is detachably inserted in one end of each movable rod 2, which is far away from the support plate 1, a connecting push rod 31 for pushing the movable rods 2 to rotate is detachably arranged on the adjacent side of each movable rod 2, the connecting push rods 31 are in an inclined state, a movable plate 3 which horizontally moves up and down is detachably arranged between the connecting push rods 31, both ends of each connecting push rod 31 are rotatably connected between the movable rods 2 and the movable plate 3, and a pushing part 5 for pushing the movable plate 3 to move up and down is detachably arranged between the movable plate 3 and the support plate 1.

Through the detachable connection among the components, each component is convenient to detach after the components are used, the movable area can be sufficiently and effectively disinfected and cleaned, germs on the body of a patient are prevented from remaining in the movable switching area, the dilator can be completely disinfected and cleaned, the dilator can be comprehensively disinfected and cleaned, the condition of cross infection is reduced to the maximum extent, and a better treatment effect is provided for the patient; the operation is convenient, the opening process can be completed only by rotating the screw 51, the opening of the incision can be completed quickly, the accuracy of the opener can be increased to the maximum extent by matching with the use of an external microscope, the mucous membrane opening plate 42 of the opener can be accurately positioned at the incision, the opening can be accurately performed, the secondary injury to a patient in the opening process can be avoided, so that the ischemia and the injury of tissues around an operation area can be prevented, and the postoperative swelling reaction can be reduced; and can fully expose the art district through strutting, fully expose the art district not only can effectively avoid the drill point to be drawn into or heat production damage surrounding soft tissue, and be favorable to the art person to judge the operation position more accurately, can effectively shorten operating time, reduce technical sensitivity for the operation is safer.

As a further embodiment of this embodiment, as shown in fig. 1 and 2, prop open part 4 including adjusting pole 41, mucous membrane prop open board 42 and the inserted block 43 of square structure, the spacing slot 22 that supplies inserted block 43 to peg graft is seted up on 2 tops of movable rod, adjust pole 41 top and mucous membrane prop open board 42 fixed connection, bottom and inserted block 43 fixed connection, threaded connection has fixation nut between inserted block 43 and the movable rod 2, it sets up to adjust pole 41 to be the arc structure, and be ten degrees angles between the horizontal sight, be used for better laminating jaw bone face, adapt to jaw anatomy structure's physiology radian, can transversely adjust according to the art district size, can provide the treatment for the patient better.

As a further embodiment of the present embodiment, as shown in fig. 1, 4 and 5, the pushing component 5 includes a screw 51, a bottom end of the screw 51 is in an "i" shape, a sealing plate 6 with a T-shaped structure for connecting the screw 51 is detachably disposed on the supporting plate 1, a positioning bolt 62 is threadedly connected between the sealing plate 6 and the supporting plate 1, a positioning slot 11 for inserting the sealing plate 6 is formed on the supporting plate 1, and a threaded hole 61 for threadedly connecting the screw 51 is formed on the sealing plate 6.

As a further embodiment of the present embodiment, as shown in fig. 4, the pushing member 5 further includes a positioning plate 52 and a bearing 53, the positioning plate 52 is fixedly connected to the outer periphery of the bearing 53, and the inner ring of the bearing 53 is fixedly connected to the screw 51;

the moving plate 3 is provided with a limiting groove 32 for the bearing 53 to be inserted, and a limiting nut is connected between the moving plate 3 and the positioning plate 52 in a threaded manner.

As a further embodiment of this embodiment, as shown in fig. 1 and fig. 3, a limiting component 23 is disposed in one end of the connecting push rod 31, the limiting component 23 includes a rotating shaft 231, a positioning nut 232 fixedly connected to one end of the rotating shaft 231, and a baffle 233 fixedly connected to the other end of the rotating shaft 231, a groove 21 is formed on the movable rod 2, the rotating shaft 231 is rotatably connected in the groove 21, and the connecting push rod 31 is rotatably connected to the periphery of the rotating shaft 231.

As a further embodiment of this embodiment, as shown in FIG. 1, the bottom end of the screw 51 is detachably provided with an anti-slip rod 511 for driving the threaded rod 51 to rotate, and the anti-slip rod 511 is sleeved on the bottom end of the screw 51.

The movable rod 2 is rotatably arranged on two sides of the support plate 1 through the limiting part 23, the adjusting rod 41 is inserted into the limiting slot 22 and is fixed by using a fixing nut, the connecting push rod 31 is rotatably arranged between the movable rod 2 and the movable plate 3 through the limiting part 23, the sealing plate 6 is arranged on the support plate 1 through the positioning bolt 62, the bearing 53 is arranged on the movable plate 3 and is fixed by using the limiting nut, the screw 51 is in threaded connection with the sealing plate 6, the anti-slip rod 511 is arranged at the bottom end of the screw 51, the longitudinal operation is completed, and medical workers can complete the expansion of the mucous membrane expanding plate 42 only by rotating the anti-slip rod 511, so that the operation is convenient; when the device is disassembled, the limiting nut, the fixing nut and the three limiting parts 23 are disassembled, so that the whole device can be disassembled, the area of the rotary joint can be completely exposed through disassembly, and the spreader can be comprehensively disinfected and cleaned; wherein the radius of the inscribed circle of the positioning slot 11 is larger than the radius of the circumscribed circle of the positioning plate 52.

The length of the spreader is one, the longer spreader adapts to the maxillary anterior tooth area, the shorter spreader adapts to the mandibular anterior tooth area, when the size of the movable rod 2 is longer, the spreader is suitable for spreading the maxillary anterior tooth area, and when the size of the movable rod 2 is shorter, the spreader is suitable for spreading the mandibular anterior tooth area.

Example 2

Referring to fig. 5, 6 and 7, the present embodiment is otherwise identical to the embodiment of example 1, except for the addition of the driving member 8 and the reversing lever 7 and the removal of the sealing plate 6.

The formula of dismantling screw 51 bottom is provided with drive screw 51 gliding drive element 8 from top to bottom, and drive element 8 includes rotary rod 81, handrail 82 and elliptical plate 83, rotary rod 81 one end and handrail 82 fixed connection, the other end and elliptical plate 83 fixed connection, and elliptical plate 83 periphery is seted up and is supplied the gliding spout 831 in screw 51 bottom, and the spout 831 cross-section is protruding type structure.

The bottom end of the positioning bolt 62 penetrates through the support plate 1 and is connected with a reversing rod 7 through threads, a guide groove for rotating the elliptical plate 83 is formed in the reversing rod 7, and a limiting ring 71 for supporting the rotating rod 81 is detachably arranged on the reversing rod 7.

In the embodiment, the limiting ring 71 is of a U-shaped structure, so that the rotating rod 81 is conveniently limited and is rotatably connected with the rotating rod 81, the rotating rod 81 is prevented from falling off in the use process, and the disassembly is convenient; the degree of the reversing rod 7 can be correspondingly set according to the specific use condition of medical staff, so that the medical staff can conveniently and transversely operate to prevent the vision from being blocked during operation; the anti-skid rod 511 and the sealing plate 6 are detached, the reversing rod 7 is installed at the bottom end of the support plate 1 through the positioning bolt 62, the driving part 8 is installed on the reversing rod 7, the screw rod 51 is inserted into the sliding groove 831 at the moment, installation of transverse operation is completed, the armrest 82 is screwed at the moment, the elliptical plate 83 can be driven to rotate, the long axis and the short axis of the elliptical plate 83 are changed, the screw rod 51 is pushed to move up and down, and therefore the mucous membrane opening plate 42 is opened; when the device is disassembled, the oval plate 83 is rotated, so that the notch of the oval plate 83, which is inserted with the screw rod 51, corresponds to the screw rod 51, and then the positioning bolt 62 is disassembled, so that the transversely operated components can be disassembled, and the device is convenient to disinfect.

The pair of the spreaders in the shape is symmetrical left and right and is respectively suitable for the upper right and lower left molar areas and the upper left and lower right molar areas; the state of fig. 6 this moment is applicable to upper left and lower right molar region and struts, and the drive unit 8 and the reversing rod 7 mirror image in fig. 6 are to the right, and the convenience is operated on the right, is applicable to upper right and lower left molar region and struts this moment.

Example 3

Referring to fig. 7 and 8, the other parts of this embodiment are the same as the embodiment of embodiment 2, and the different parts are that the driving component 8 and the reversing rod 7 are arranged in an inclined manner, and the bottom end of the screw rod 51 is arranged in an inclined manner, and through the inclined arrangement of the driving component 8 and the reversing rod 7, the positioning bolt 62 is extended and is in threaded connection with the reversing rod 7, so that the reversing rod 7 is fixed in an inclined manner, which is more convenient for the medical staff to operate, and increases the application range, and the bottom end of the screw rod 51 is arranged in an inclined manner, so that the bottom end of the screw rod 51 is located in the sliding groove 831, which facilitates the driving of the screw rod 51 to move up and down, thereby facilitating the expansion.

The pair of the spreaders in the shape is bilaterally symmetrical and is respectively suitable for the upper right front molar area, the lower left front molar area and the upper left front molar area and the lower right front molar area; the state of fig. 8 at this moment is suitable for the distraction of the upper right and lower left premolar regions, and the driving part 8 and the reversing rod 7 in fig. 8 are mirrored to the right, so that the operation on the right is facilitated, and the state is suitable for the distraction of the upper left and lower right premolar regions.

The distraction components proposed by the invention are 6 types in combination of the embodiment 1, the embodiment 2 and the embodiment 3, and are divided into an anterior molar region distraction component, a lower anterior molar region distraction component, a right upper and left lower anterior molar region distraction component, a left upper and right lower anterior molar region distraction component, a right upper and left lower molar region distraction component and a left upper and right lower molar region distraction component according to different operation regions. Wherein the upper anterior teeth region distraction component is longer than the lower anterior teeth region distraction component; the form of the distraction component of the premolar area of the 2 types is the same, and the horizontal operation direction is opposite; the distraction parts in the 2 molar regions have the same form and opposite horizontal operation directions, the different distraction part forms are respectively suitable for the jaw bone in different operation regions and the complex anatomical form of the dentition, and the distractors in different forms can be correspondingly selected according to the condition of the patient's state of an illness, so that the treatment is better provided for the patient, the application range is increased, and a better treatment environment is provided for the patient.

In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, principal features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, which fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (9)

1. Oral cavity root tip operation is with towed ware that struts, including extension board (1), its characterized in that: the utility model discloses a supporting plate, including extension board (1), support board (1), movable rod (2), and support board (1) and movable rod (2) rotate to be connected, the one end dismantlement formula that extension board (1) was kept away from in movable rod (2) is pegged graft and is had strutting part (4), the equal dismantlement formula of adjacent side of movable rod (2) sets up promotion movable rod (2) pivoted connecting rod (31), connecting rod (31) are the tilt state, the dismantlement formula is provided with movable plate (3) that the level reciprocated between connecting rod (31), connecting rod (31) both ends are rotated and are connected between movable rod (2) and movable plate (3), the dismantlement formula is provided with promotion part (5) that promote movable plate (3) and reciprocate between movable plate (3) and extension board (1).

2. The traction-type distractor for oral root tip surgery according to claim 1, characterized in that: strutting part (4) including adjusting plug (43) of pole (41), mucous membrane distraction board (42) and square structure, spacing slot (22) that supply plug (43) to peg graft are seted up on movable rod (2) top, adjust pole (41) top and mucous membrane distraction board (42) fixed connection, bottom and plug (43) fixed connection, threaded connection has fixation nut between plug (43) and movable rod (2), adjust pole (41) and be the arc structure setting, and be ten degrees angles between the horizontal sight for better laminating jaw bone face.

3. The traction-type distractor for oral root tip surgery according to claim 1, characterized in that: the push component (5) comprises a screw rod (51), the bottom end of the screw rod (51) is of an I-shaped structure, a sealing plate (6) of a T-shaped structure connected with the screw rod (51) is detachably arranged on the support plate (1), a positioning bolt (62) is in threaded connection between the sealing plate (6) and the support plate (1), a positioning slot (11) for the sealing plate (6) to be inserted is formed in the support plate (1), and a threaded hole (61) for the screw rod (51) to be in threaded connection is formed in the sealing plate (6).

4. The traction-type distractor for oral root tip surgery according to claim 3, characterized in that: the pushing component (5) further comprises a positioning plate (52) and a bearing (53), the positioning plate (52) is fixedly connected to the periphery of an outer ring of the bearing (53), and an inner ring of the bearing (53) is fixedly connected with the screw rod (51);

the movable plate (3) is provided with a limiting groove (32) for the bearing (53) to be inserted, and a limiting nut is connected between the movable plate (3) and the positioning plate (52) in a threaded manner.

5. The traction-type distractor for oral root tip surgery according to claim 1, characterized in that: be provided with stop part (23) in connecting push rod (31) one end, stop part (23) are including pivot (231), fixed connection at set nut (232) of pivot (231) one end and fixed connection at baffle (233) of the pivot (231) other end, seted up recess (21) on movable rod (2), pivot (231) rotate to be connected in recess (21), connecting push rod (31) rotate to be connected in pivot (231) periphery.

6. The traction-type distractor for oral root tip surgery according to claim 3, characterized in that: the bottom end of the screw rod (51) is detachably provided with an anti-skid rod (511) for driving the threaded rod (51) to rotate, and the anti-skid rod (511) is sleeved at the bottom end of the screw rod (51).

7. The traction-type distractor for oral root tip surgery according to claim 3, characterized in that: screw rod (51) bottom dismantlement formula is provided with gliding driver part (8) about drive screw rod (51), driver part (8) include rotary rod (81), handrail (82) and elliptical plate (83), rotary rod (81) one end and handrail (82) fixed connection, the other end and elliptical plate (83) fixed connection, supply gliding spout (831) of screw rod (51) bottom is seted up to elliptical plate (83) periphery, spout (831) cross-section is protruding type structure.

8. The traction-type distractor for oral root tip surgery according to claim 7, characterized in that: the bottom end of the positioning bolt (62) penetrates through the supporting plate (1) and is connected with the reversing rod (7) in a threaded mode, a guide groove for rotating the elliptical plate (83) is formed in the reversing rod (7), and the reversing rod (7) is detachably provided with a limiting ring (71) for supporting the rotating rod (81).

9. The method of operating a traction-type distractor for oral root tip surgery according to any one of claims 1 to 8, wherein: the method comprises the following steps:

s1: installation: the method comprises the steps of effectively rotating longitudinal operation and transverse operation according to the direction of opening an incision to prevent the view of medical staff from being affected, wherein during longitudinal operation, a movable rod (2) is rotatably arranged on two sides of a support plate (1) through a limiting part (23), an adjusting rod (41) is inserted into a limiting slot (22) and is fixed by a fixed nut, a connecting push rod (31) is rotatably arranged between the movable rod (2) and a moving plate (3) through the limiting part (23), a sealing plate (6) is arranged on the support plate (1) through a positioning bolt (62), a bearing (53) is arranged on the moving plate (3) and is fixed by the limiting nut, at the moment, a screw rod (51) is in threaded connection with the sealing plate (6), and an anti-skid rod (511) is arranged at the bottom end of the screw rod (51) to complete the installation of longitudinal operation; when the transverse operation is carried out, the anti-skid rod (511) and the sealing plate (6) are detached, then the reversing rod (7) is installed at the bottom end of the support plate (1) through the positioning bolt (62), then the driving part (8) is installed on the reversing rod (7), and at the moment, the screw rod (51) is inserted in the sliding groove (831) to complete the installation of the transverse operation;

s2: opening: longitudinal operation: the mucosa opening plate (42) can be opened by screwing the antiskid rod (511);

and (3) transverse operation: the handrail (82) is screwed to drive the elliptical plate (83) to rotate, the long axis and the short axis of the elliptical plate (83) are changed, the screw rod (51) is pushed to move up and down, and the mucosa stretching plate (42) is stretched;

s3: disassembling: the oval plate (83) is rotated to enable a gap of the oval plate (83) for inserting the screw rod (51) to correspond to the screw rod (51), then the positioning bolt (62) is disassembled, and then the limiting nut, the fixing nut and the three limiting parts (23) are disassembled, so that the whole device can be disassembled;

s4: cleaning: after the equipment is disassembled, the parts are transported to the appointed disinfection space uniformly for disinfection.

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