Maxillary nasal ridge distractor

Abstract

The utility model discloses a maxillary nasal ridge spreader relates to medical instrument technical field, and this maxillary nasal ridge spreader, including hold and take the pole, still include: support rod, the support rod fixed in hold and take the pole one end, the length direction of support rod is perpendicular with the axis of hold and take the pole, the hook body, two the hook body are established, and one end of two hook bodies is all with support rod sliding connection, to make hook body can slide along the length direction of support rod, and two hook bodies about the axis of symmetry of hold and take the pole set up, draw a rope, two the draw a rope are established, and one end of two hook bodies is close to support rod respectively with two draw a rope's non end fixedly connected. The utility model discloses through setting up two slidable hook body, and setting up drive mechanism and draw a rope adjust the position of hook body, make two draw a hook can be close to each other or away from each other, and be convenient for using.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a maxillary nasal spine expander. Background Technology

[0002] During rhinoplasty, the columella and the sides of the nostrils need to be cut to separate the skin and cartilage, expose the nasal septum cartilage, and then the autologous rib cartilage, ear cartilage, or other biomimetic material pieces are clamped on it to create the necessary framework to reshape the nasal tip.

[0003] Because the distance between the two hooks of a double-headed retractor is fixed in the existing technology, different sizes of retractors need to be prepared during surgery to meet different usage situations. Usually, a smaller retractor is used to pull a single nostril when cutting, and a larger retractor is used to pull the middle of the nose when it is necessary to expose the nasal septum cartilage. The use of multiple retractors still makes the surgical operation somewhat inconvenient. Utility Model Content

[0004] This invention provides a maxillary nasal spine retractor with the advantage of adjustable hook spacing, thus solving the problems mentioned in the background art.

[0005] To achieve adjustable hook spacing, this utility model provides the following technical solution: a maxillary nasal spine expander, comprising a holding rod, and further comprising: a support rod, the support rod being fixed to one end of the holding rod, the length direction of the support rod being perpendicular to the axis of the holding rod; two hooks, one end of each hook being slidably connected to the support rod so that the hooks can slide along the length direction of the support rod, and the two hooks being symmetrically arranged about the axis of the holding rod; two pull ropes, the ends of the two hooks near the support rod being fixedly connected to the non-ends of the two pull ropes respectively; and a driving mechanism, the driving mechanism being disposed on the holding rod, both ends of the pull ropes being connected to the driving mechanism, the driving mechanism being used to drive the pull ropes to move, so that the two hooks move closer or further apart along the length direction of the support rod.

[0006] As a preferred technical solution of this utility model, the upper surface of the support rod is provided with a through groove along the length direction, and both side walls of the through groove are provided with stepped platforms, and the hook body slides between the two stepped platforms; the hook body near the support rod end is fixed with a first slider and a second slider from top to bottom, and the lower surface of the first slider is supported by the end face of the stepped platform.

[0007] As a preferred technical solution of this utility model, the support rod is provided with arc-shaped guide holes near both ends. The arc-shaped guide holes are connected to the through groove. The second slider has a through hole along the moving direction of the hook body. The non-end of the pull rope is fixed to the first slider. One end of the pull rope passes through the arc-shaped guide hole and then exits from the through hole.

[0008] As a preferred embodiment of this utility model, the holding rod has a receiving cavity, and a movable disc is slidably disposed within the receiving cavity, the movable disc being able to slide up and down within the receiving cavity; the holding rod has a second through groove, one end of the second through groove communicating with a through groove, and the other end of the second through groove communicating with the receiving cavity; one end of the pull rope passes through the second through groove and is fixedly connected to the movable disc; a tension spring is disposed between the movable disc and the top surface of the receiving cavity, and the two ends of the tension spring are fixedly connected to the movable disc and the holding rod respectively; a retaining ring is fixedly disposed on the inner wall of the receiving cavity, the inner diameter of the retaining ring being smaller than the outer diameter of the movable disc.

[0009] As a preferred embodiment of this utility model, the driving mechanism includes: a threaded portion on the outer surface of the holding rod, a vertical groove in the vertical direction at the threaded portion of the holding rod, and a fixing block slidably disposed within the vertical groove; a first through groove in the holding rod, one end of the first through groove communicating with a through groove, the other end of the first through groove communicating with the vertical groove, and the other end of the pull rope passing through the first through groove and fixedly connected to the fixing block; a driving nut on the outer circumferential surface of the threaded portion, the driving nut fitting with the threaded portion, a receiving ring groove on the inner circumferential surface of the driving nut, a connecting ring disposed within the receiving ring groove, the connecting ring being axially fixed to the driving nut but not circumferentially fixed; and the fixing block being fixedly connected to the connecting ring.

[0010] In a preferred embodiment of this invention, the inner diameter of the connecting ring is smaller than the thread diameter of the driving nut.

[0011] As a preferred embodiment of this utility model, a stabilizing rod is fixedly provided at one end of the holding rod near the support rod, and the stabilizing rod is located between the hook head of the hook body and the support rod; an expansion joint is fixedly provided at the hook body near the stabilizing rod, and a through hole is provided in the expansion joint, through which the stabilizing rod passes.

[0012] As a preferred embodiment of this utility model, the end of the holding rod away from the hook body is provided with a first connecting end, which is threadedly connected to the holding rod; a connecting member is fixedly provided on one side of the first connecting end, and a second connecting end is fixedly provided on the end of the connecting member away from the first connecting end; a clamping member is connected to the second connecting end, and the clamping member is detachably connected to the second connecting end.

[0013] Compared with the prior art, this utility model provides a maxillary nasal spine retractor, which has the following features:

[0014] Beneficial effects:

[0015] 1. This maxillary nasal ridge retractor features two sliding hooks with a drive mechanism and pull ropes to adjust their positions. The hooks can be moved closer or further apart. When separating skin and cartilage, the hooks can be adjusted to move closer together to reduce the distance. When cartilage exposure is required, the hooks can be adjusted to move further apart to increase the distance. This eliminates the need for different hook sizes, making it easy to use.

[0016] 2. This maxillary nasal spine retractor, by setting up a connector with a first connecting end and a second connecting end, as well as a clamping component, allows the first connecting end to be connected to the holding rod when the hook and holding rod need to be clamped and fixed. The clamping component is then inserted into the connector and clamped onto a sterile drape to achieve a fixing effect without the need for manual pulling of the hook, thus improving the convenience of use. When clamping and fixing are not required, the holding rod can be separated from the first connecting end, thereby allowing free use of the hook and holding rod. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a diagram showing the fit between the hook body, support rod, and pull rope of this utility model;

[0019] Figure 3 This is a cross-sectional structural diagram of the support rod and the straight tie rod of this utility model;

[0020] Figure 4 This is a cross-sectional view of the hook body of this utility model;

[0021] Figure 5 This is a cross-sectional view of the support rod of this utility model;

[0022] Figure 6 This is a cross-sectional view of the holding rod located at the threaded part and the drive mechanism of this utility model;

[0023] Figure 7 This is a cross-sectional front view of the holding rod located at the threaded part and the drive mechanism of this utility model;

[0024] Figure 8 This utility model Figure 7 Enlarged diagram of area A in the middle;

[0025] Figure 9 This is a schematic diagram of the connection of the pull rope 10 of this utility model;

[0026] Figure 10 This is a diagram showing the fit between the holding rod, connecting parts, and clamping parts of this utility model.

[0027] In the diagram: 1. Holding rod; 2. Hook body; 3. Clamping component; 4. Connecting component; 41. First connecting end; 42. Second connecting end; 5. Support rod; 51. Through groove; 52. Stepped platform; 53. Arc-shaped guide hole; 6. Stabilizing rod; 7. First slider; 8. Second slider; 81. Through hole; 9. Expansion joint; 91. Through hole; 10. Pull rope; 11. First through groove; 12. Second through groove; 13. Threaded part; 14. Drive nut; 141. Receiving ring groove; 142. Limiting ring; 15. Vertical groove; 16. Connecting ring; 17. Fixing block; 18. Receiving cavity; 19. Tension spring; 20. Movable disc; 21. Retaining ring. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1 - Figure 6 This utility model discloses a maxillary nasal spine expander, including a holding rod 1 and a support rod 5. The support rod 5 is fixed to one end of the holding rod 1, and the length direction of the support rod 5 is perpendicular to the axis of the holding rod 1. Preferably, the two ends of the support rod 5 are symmetrical about the axis of the holding rod 1.

[0030] Furthermore, a hook body 2 is slidably provided on the support rod 5. The connection part between the hook body 2 and the support rod 5 is the end away from the hook head. There are two hook bodies 2. Both hook bodies 2 can slide along the length direction of the support rod 5, and the two hook bodies 2 are symmetrically arranged about the axis of the holding rod 1.

[0031] In addition, there is a pull rope 10, which has two parts. Each pull rope 10 corresponds to a hook 2. The ends of the two hooks 2 near the support rod 5 are fixed to the non-ends of the two pull ropes 10, so that the pull ropes 10 can move the hooks 2 when they move. Preferably, the material of the pull ropes 10 is carbon steel or tungsten, and the diameter of the pull ropes 10 is preferably 0.75mm to 2.5mm.

[0032] Furthermore, a drive mechanism is also provided on the holding rod 1. Both ends of the pull rope 10 are connected to the drive mechanism. The drive mechanism is used to drive the pull rope 10 to move, so that the two hooks 2 move closer or further apart along the length of the support rod 5, thereby adjusting the distance between the two hooks 2.

[0033] When separating the skin and cartilage, the two hooks 2 can be adjusted to move closer to each other to reduce the distance between them. When it is necessary to expose the cartilage, the two hooks 2 can be adjusted to move further apart to increase the distance between them for ease of use.

[0034] Combination Figure 2 - Figure 5 To constrain the sliding path of the hook 2 and prevent it from detaching from the support rod 5, a through groove 51 is provided along the length of the upper surface of the support rod 5. The through groove 51 penetrates the upper and lower surfaces of the support rod 5. Stepped platforms 52 are provided on both side walls of the through groove 51. The end of the hook 2 near the support rod 5 can slide between the two stepped platforms 52. A first slider 7 and a second slider 8 are fixed from top to bottom at the end of the hook 2 near the support rod 5. The width of the first slider 7 is slightly larger than the distance between the two stepped platforms 52, so that the lower surface of the first slider 7 is supported by the end face of the stepped platform 52, thereby preventing the hook 2 from falling off the support rod 5 when sliding. In order to prevent the hook 2 from moving upward, the structure and size of the second slider 8 are preferably the same as those of the first slider 7, so that the upper surface of the second slider 8 contacts the lower end face of the stepped platform 52.

[0035] Combination Figure 4 and Figure 5 In order to facilitate the movement of the hook body 2 by using the pull rope 10, arc-shaped guide holes 53 are provided near both ends of the support rod 5. The arc-shaped guide hole 53 has an inlet end and an outlet end, and both the inlet end and the outlet end of the arc-shaped guide hole 53 are connected to the through groove 51. The arc-shaped guide hole 53 is used to change the direction of the pull rope 10.

[0036] Furthermore, a through hole 81 is provided in the second slider 8 along the moving direction of the hook 2. For any single hook 2, the non-end of the pull rope 10 is fixedly connected to the first slider 7. One end of the pull rope 10 passes through the corresponding arc-shaped guide hole 53 and then exits from the through hole 81. This ensures that when the pull rope 10 moves the hook 2, the second slider 8 will not hinder the movement of the hook 2. At the same time, part of the pull rope 10 can be placed in the through groove 51 to reduce the volume occupied by the pull rope 10.

[0037] In this embodiment, since the diameter of the hook body 2 is relatively small, generally around 2mm to 4mm, and the pull rope 10 also has a certain diameter, in order to avoid the opening of the through hole 81 causing the bending strength of the hook body 2 to be too low, the thickness of the second slider 8 can be appropriately increased, so that the thickness of the second slider 8 is about 2mm larger than the diameter of the through hole 81.

[0038] Combination Figure 2 , Figure 6 , Figure 7 and Figure 9A receiving cavity 18 is provided inside the holding rod 1. Preferably, the receiving cavity 18 is cylindrical. A movable disk 20 is slidably provided inside the receiving cavity 18. The movable disk 20 can slide up and down inside the receiving cavity 18.

[0039] In addition, a second through slot 12 is provided inside the holding rod 1. There are two second through slots 12 to correspond to the two hooks 2. For any single second through slot 12, one end is connected to the through slot 51 and the other end is connected to the receiving cavity 18. One end of the pull rope 10 passes through the second through slot 12 and is fixed to the movable plate 20.

[0040] Furthermore, a tension spring 19 is provided between the top surface of the movable disc 20 and the receiving cavity 18. The two ends of the tension spring 19 are fixedly connected to the movable disc 20 and the holding rod 1, respectively. When the movable disc 20 moves downward under the traction of the pull rope 10, the tension spring 19 is pulled. When the pull rope 10 is no longer under downward traction, the tension spring 19 rebounds and drives the movable disc 20 to reset.

[0041] Furthermore, a retaining ring 21 is fixedly provided on the inner wall of the receiving cavity 18. The inner diameter of the retaining ring 21 is smaller than the outer diameter of the movable disk 20, so that the movable disk 20 is limited by the retaining ring 21 when it rises to a certain height.

[0042] Combination Figure 6 - Figure 8 The aforementioned drive mechanism includes a threaded portion 13, which is formed on the outer surface of the holding rod 1. A vertical groove 15 is formed in the vertical direction at the threaded portion 13 on the holding rod 1. A fixing block 17 is slidably provided in the vertical groove 15, and the fixing block 17 can slide up and down along the vertical groove 15.

[0043] Furthermore, a first through groove 11 is provided inside the holding rod 1. There are two first through grooves 11 to correspond to the two hooks 2. For any one of the first through grooves 11, one end is connected to the through groove 51 and the other end is connected to the vertical groove 15. The other end of the pull rope 10 passes through the first through groove 11 and is fixed to the fixing block 17.

[0044] Additionally, a drive nut 14 is provided on the outer circumferential surface of the threaded portion 13. The drive nut 14 engages with the threaded portion 13 so that when the drive nut 14 rotates, it can move up and down along the holding rod 1 under the action of the thread. A receiving annular groove 141 is provided on the inner circumferential surface of the drive nut 14. A connecting ring 16 is provided in the receiving annular groove 141. The fixing block 17 is fixed to the connecting ring 16. The connecting ring 16 is axially fixed to the drive nut 14 but not circumferentially fixed. Specifically, a limiting ring 142 can be fixed on the side of the receiving annular groove 141 near the connecting ring 16, and a matching annular groove can be provided on the outer circumferential surface of the connecting ring 16 so that the limiting ring 142 can be inserted into the annular groove. Thus, when the drive nut 14 rotates, the connecting ring 16 does not rotate. When the drive nut 14 moves axially along the holding rod 1, the connecting ring 16 moves accordingly. The height of the fixing block 17 can be adjusted by rotating the drive nut 14.

[0045] Combination Figure 8 To avoid contact between the inner surface of the connecting ring 16 and the threaded portion 13, it is preferable that the inner diameter of the connecting ring 16 is smaller than the thread diameter of the drive nut 14.

[0046] Combination Figure 9 Since both the first through groove 11 and the second through groove 12 are opened inside the holding rod 1, in order to reduce the diameter of the bottom end of the holding rod 1 and reduce the impact on the strength of the bottom end of the holding rod 1, the first through groove 11 and the second through groove 12 can be staggered. Specifically, it can be expressed as follows: on the same plane, the line connecting the two first through grooves 11 is perpendicular to the line connecting the two second through grooves 12.

[0047] Combination Figure 1 - Figure 3 To improve the stability of the hook 2 during sliding, a stabilizing rod 6 is fixed at one end of the holding rod 1 near the support rod 5. The stabilizing rod 6 is located between the hook head of the hook 2 and the support rod 5, and the stabilizing rod 6 is parallel to the support rod 5. Furthermore, an expansion joint 9 is fixed at the hook 2 near the stabilizing rod 6. The diameter of the expansion joint 9 is larger than the diameter of the hook 2. A through hole 91 is opened in the expansion joint 9, and the stabilizing rod 6 passes through the through hole 91, so that the hook 2 can be supported and restricted by the stabilizing rod 6 during sliding.

[0048] Combination Figure 1 and Figure 10To improve the ease of use of the device, a first connecting end 41 is provided at the end of the holding rod 1 away from the hook body 2. The first connecting end 41 is threadedly connected to the holding rod 1. A connector 4 is fixed on one side of the first connecting end 41. Preferably, the connector 4 is a metal chain. A second connecting end 42 is fixed at the end of the connector 4 away from the first connecting end 41. A clamping member 3 is connected to the second connecting end 42. Preferably, the clamping member 3 is a surgical forceps for easy access. The clamping member 3 is detachably connected to the second connecting end 42. Preferably, the second connecting end 42 is an elastic buckle. Thus, when the hook body 2 and the holding rod 1 need to be clamped and fixed, the first connecting end 41 is connected to the holding rod 1, the clamping member 3 is inserted into the connector 4, and the clamping member 3 is clamped on the sterile drape to achieve a fixing effect without the need for manual pulling, thus improving the ease of use. When clamping and fixing are not required, the holding rod 1 can be separated from the first connecting end 41, thereby allowing free use of the hook body 2 and the holding rod 1.

[0049] The working principle and usage process of this utility model are as follows: When it is necessary to increase or decrease the distance between the two hooks 2, the drive nut 14 can be rotated to move it upwards, thereby driving the connecting ring 16 and the fixing block 17 to move upwards, and then pulling the pull rope 10 upwards. Since the hooks 2 are fixed to the pull rope 10 through the first slider 7, each hook 2 moves closer to the axis of the holding rod 1 under the constraint of the through groove 51. Because the two hooks 2 are symmetrically arranged, the distance between the two hooks 2 is reduced. At this time, because the other end of the pull rope 10 is connected to the movable disc 20... The movable disc 20 is fixed in place. Under the action of the pull rope 10, it resists the tension of the tension spring 19 and moves downward. When it is necessary to increase the distance between the two hooks 2, the drive nut 14 can be rotated in the opposite direction, causing the drive nut 14 to move downward, thereby driving the connecting ring 16 and the fixing block 17 to move downward. At this time, the movable disc 20 moves upward under the rebound action of the tension spring 19. Since the drive nut 14 is connected to the holding rod 1 through the threaded part 13, the distance that the drive nut 14 moves downward is the height that the movable disc 20 rises. Thus, the reverse movement of the pull rope 10 drives the hooks 2 to move away from each other.

[0050] In summary, this maxillary nasal spine retractor, by setting two slidable hooks 2 and providing a drive mechanism and pull rope 10 to adjust the position of the hooks 2, allows the two hooks to move closer or further apart. When separating skin and cartilage, the two hooks 2 can be adjusted to move closer together, thereby reducing the distance; when it is necessary to expose the cartilage, the two hooks 2 can be adjusted to move further apart, thereby increasing the distance. It eliminates the need to prepare hooks of different specifications, making it convenient to use. Furthermore, by setting a first connecting end 41 and a second connecting end 42... The connector 4 and clamping member 3 of the second connecting end 42 are detachably connected to the holding rod 1 and the clamping member 3. When the hook body 2 and the holding rod 1 need to be clamped and fixed, the first connecting end 41 is connected to the holding rod 1, the clamping member 3 is inserted into the connector 4, and then the clamping member 3 is clamped on the sterile drape to achieve a fixing effect without the need for manual pulling of the hook, thus improving the convenience of use. When clamping and fixing is not required, the holding rod 1 can be separated from the first connecting end 41, thus allowing free use of the hook body 2 and the holding rod 1.

[0051] It should be noted that, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0052] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A maxillary nasal spine distractor comprising a holding bar (1), characterized in that, Also includes: Support rod (5), the support rod (5) is fixed to one end of the holding rod (1), and the length direction of the support rod (5) is perpendicular to the axis of the holding rod (1); Hook (2), two hooks (2) are provided, one end of each hook (2) is slidably connected to the support rod (5) so that the hook (2) can slide along the length direction of the support rod (5), and the two hooks (2) are symmetrically arranged about the axis of the holding rod (1); Pull rope (10), the pull rope (10) is provided with two ropes, and the two hooks (2) are respectively fixed to the non-ends of the two pull ropes (10) near the support rod (5); The driving mechanism is located on the holding rod (1). Both ends of the pull rope (10) are connected to the driving mechanism. The driving mechanism is used to drive the pull rope (10) to move so that the two hooks (2) move closer or further apart along the length of the support rod (5).

2. A maxillary nasal sp spreader according to claim 1, wherein: The upper surface of the support rod (5) is provided with a through groove (51) along the length direction. Both sides of the through groove (51) are provided with stepped platforms (52). The hook (2) slides between the two stepped platforms (52). The hook body (2) is fixed with a first slider (7) and a second slider (8) from top to bottom at one end near the support rod (5). The lower surface of the first slider (7) is supported by the end face of the stepped platform (52).

3. A maxillary nasal sp spreader according to claim 2, wherein: The support rod (5) is provided with arc-shaped guide holes (53) near both ends, and the arc-shaped guide holes (53) are connected to the through groove (51); The second slider (8) has a through hole (81) in the direction of movement of the hook body (2); The non-end of the pull rope (10) is fixedly connected to the first slider (7), and one end of the pull rope (10) passes through the arc-shaped guide hole (53) and then exits through the through hole (81).

4. A maxillary nasal sp spreader according to claim 3, wherein: The holding rod (1) has a receiving cavity (18) inside, and a movable disc (20) is slidably provided in the receiving cavity (18). The movable disc (20) can slide up and down in the receiving cavity (18). The holding rod (1) has a second through groove (12) inside. One end of the second through groove (12) is connected to the through groove (51), and the other end of the second through groove (12) is connected to the receiving cavity (18). One end of the pull rope (10) passes through the second through groove (12) and is fixed to the movable plate (20). A tension spring (19) is provided between the top surface of the movable disc (20) and the receiving cavity (18), and the two ends of the tension spring (19) are fixedly connected to the movable disc (20) and the holding rod (1) respectively. The inner wall of the receiving cavity (18) is fixed with a retaining ring (21), the inner diameter of which is smaller than the outer diameter of the movable disk (20).

5. A maxillary nasal sp spreader according to claim 4, wherein, The driving mechanism includes: a threaded portion (13) is provided on the outer surface of the holding rod (1), a vertical groove (15) is provided in the vertical direction at the threaded portion (13) of the holding rod (1), and a fixing block (17) is slidably provided in the vertical groove (15); The holding rod (1) is provided with a first through groove (11), one end of the first through groove (11) is connected to the through groove (51), the other end of the first through groove (11) is connected to the vertical groove (15), and the other end of the pull rope (10) passes through the first through groove (11) and is fixed to the fixing block (17). The outer circumferential surface of the threaded portion (13) is provided with a drive nut (14), the drive nut (14) fits into the threaded portion (13), the inner circumferential surface of the drive nut (14) is provided with a receiving annular groove (141), a connecting ring (16) is provided in the receiving annular groove (141), and the connecting ring (16) is axially fixed to the drive nut (14) but not circumferentially fixed; The fixing block (17) is fixedly connected to the connecting ring (16).

6. A maxillary nasal sp spreader according to claim 5, wherein: The inner diameter of the connecting ring (16) is smaller than the thread diameter of the drive nut (14).

7. A maxillary nasal sp spreader according to claim 6, wherein: A stabilizing rod (6) is fixed at one end of the holding rod (1) near the support rod (5), and the stabilizing rod (6) is located between the hook head of the hook body (2) and the support rod (5); The hook body (2) is fixed with a expansion joint (9) near the stabilizing rod (6), and a through hole (91) is opened in the expansion joint (9), through which the stabilizing rod (6) passes.

8. The maxillary nasal ridge retractor according to claim 1, characterized in that: The holding rod (1) is provided with a first connecting end (41) at the end away from the hook body (2), and the first connecting end (41) is threadedly connected to the holding rod (1); A connector (4) is fixedly provided on one side of the first connecting end (41), and a second connecting end (42) is fixedly provided on the end of the connector (4) away from the first connecting end (41); A clamping member (3) is connected to the second connecting end (42), and the clamping member (3) is detachably connected to the second connecting end (42).

Images