Adjustable retractor

Abstract

The utility model provides an adjustable retractor, which belongs to the technical field of retractors, and comprises at least one cross rod and at least one vertical rod, the at least one cross rod is connected with a retraction piece, and the at least one vertical rod is connected with a fixed seat; the locking assembly is used for connecting the vertical rod and the cross rod, the locking assembly is provided with a first connecting part used for connecting the vertical rod and a second connecting part used for connecting the cross rod, and the first connecting part and the second connecting part are rotatably connected; according to the adjustable retractor, the fixing base is arranged on the vertical rod and used for being connected with an operating bed, the retracting piece is connected to the transverse rod and used for retracting bones or soft tissues, the vertical rod and the transverse rod are connected through the first connecting part and the second connecting part of the locking assembly respectively, and the vertical rod and the transverse rod are connected through rotation between the first connecting part and the second connecting part. And the vertical rod and the cross rod can rotate, so that the angle of the drag hook can be adjusted when the drag hook is retracted.

Description

Technical Field

[0001] The utility model relates to the technical field of retractors, in particular to an adjustable retractor. Background Art

[0002] Retractors, also known as retractors, are used to retract tissues to expose the surgical area for easy exploration and operation. They can be divided into two categories: hand-held retractors and automatic retractors. There are various shapes and sizes, and you can choose the appropriate retractor according to the needs of the operation. In abdominal surgery, various joint surgeries, etc., retractors are needed to pull the patient's bones or soft tissues apart to facilitate surgery.

[0003] Chinese patent document CN215018123U discloses an adjustable retractor for orthopedics, which fixes a cross on an operating table, adjusts the range of muscle retraction by adjusting the entire retractor rod through retractor teeth, and adjusts the horizontal and vertical positions by utilizing the interaction between multiple adjustment blocks and threaded rods.

[0004] At present, the retractor needs to be hooked at a certain angle to the bone or soft tissue during surgery. However, in the above technical solution, the adjustment block and the threaded rod can only be adjusted in the horizontal and vertical directions, and thus when the retractor is fixed, the retractor can only be placed vertically, and the retractor cannot be placed obliquely. Utility Model Content

[0005] Therefore, the technical problem to be solved by the utility model is to overcome the defect in the prior art that the angle of the retractor cannot be adjusted, thereby providing an adjustable retractor.

[0006] In order to solve the above technical problems, the utility model provides an adjustable retractor, comprising: at least one cross bar and at least one vertical bar, at least one of the cross bars is connected to a retractor, and at least one of the vertical bars is connected to a fixing seat;

[0007] A locking assembly is used to connect the vertical pole and the horizontal pole. The locking assembly has a first connecting portion for connecting the vertical pole and a second connecting portion for connecting the horizontal pole. The first connecting portion and the second connecting portion are rotatably connected.

[0008] Optionally, the first connection part and the second connection part are connected via a first locking shaft, and connecting surfaces of the first connection part and the second connection part are respectively provided with tooth structures evenly arranged around the circumference of the first locking shaft and suitable for mutual engagement.

[0009] Optionally, a first locking assembly is connected to the first locking shaft, and the first locking assembly includes a nut connected to the first locking shaft through a thread.

[0010] Optionally, the locking assembly further includes a pressing handle connected to the first locking shaft via a rotating shaft.

[0011] Optionally, at least a portion of the crossbar and / or the vertical bar has a bending structure, and the diameter of the bending structure becomes thinner so that the bending structure of the crossbar or the vertical bar can also pass through the locking assembly.

[0012] Optionally, the fixing seat comprises a first seat body for connecting with the vertical pole, a second seat body spaced apart from the first seat body, and a guide rod connected between the first seat body and the second seat body;

[0013] One end of the guide rod passes through the second seat body and is connected to a second locking assembly, and the interval between the first seat body and the second seat body is adjusted by the second locking assembly.

[0014] Optionally, the second locking assembly is connected to one end of the guide rod via a thread.

[0015] Optionally, an operating handle is connected to the second locking assembly via a rotating shaft, and the operating handle can be perpendicular to the guide rod by rotating.

[0016] Optionally, the cross bar is connected to the retractor via a mounting assembly, the mounting assembly having a third connection portion for connecting the cross bar and a fourth connection portion for connecting the retractor, and the third connection portion and the fourth connection portion are rotatably connected.

[0017] Optionally, the fourth connecting portion comprises: a connecting seat and a sliding rod slidably connected in the connecting seat, and the retracting member is connected to the sliding rod;

[0018] The sliding rod is provided with a rack structure, the connecting seat is provided with a gear matching the rack structure, the connecting seat is connected with a rotating member connected to the gear, and the gear is driven to rotate by the rotating member to drive the rack to slide back and forth in the connecting seat.

[0019] The technical solution of the utility model has the following advantages:

[0020] 1. The adjustable retractor provided by the utility model has a fixing seat on the vertical rod for connecting to the operating table, a retracting piece connected to the horizontal rod for retracting bones or soft tissues, the vertical rod and the horizontal rod are respectively connected by the first connecting part and the second connecting part of the locking assembly, and the vertical rod and the horizontal rod can be rotated by the rotation between the first connecting part and the second connecting part, so as to realize the adjustment of the retractor hook angle during retraction.

[0021] 2. The adjustable retractor provided by the utility model is characterized in that the first connecting part and the second connecting part are connected by a first locking shaft, and the connecting surfaces of the first connecting part and the second connecting part are respectively provided with tooth structures that are suitable for mutual engagement and are evenly arranged around the circumference of the first locking shaft, thereby realizing the angle adjustment between the vertical rod and the horizontal rod.

[0022] 3. In the adjustable retractor provided by the utility model, the first locking shaft is connected to a first locking assembly, and the first locking assembly includes a nut connected to the first locking shaft through a thread, which can achieve fixed locking between the first connecting portion of the locking assembly and the cross bar.

[0023] 4. The adjustable retractor provided by the utility model, the locking assembly also includes a pressing handle connected to the first locking shaft through a rotating shaft, which can further fix and lock the crossbar and the vertical rod after the toothed structure of the first connecting part and the second connecting part of the locking assembly are engaged.

[0024] 5. The adjustable retractor provided by the utility model has a bending structure on at least part of the cross bar and / or the vertical bar, and the diameter at the bending structure becomes thinner so that the bending structure of the cross bar or the vertical bar can also pass through the locking assembly. The locking assembly can pass through the bending structure on the cross bar and / or the vertical bar, which is convenient for subsequent adjustment of the angle between the cross bar and the vertical bar.

[0025] 6. The adjustable retractor provided by the utility model, the fixed seat includes a first seat body used to connect with the vertical rod, a second seat body spaced apart from the first seat body, and a guide rod connected between the first seat body and the second seat body, so as to realize the connection between the first seat body and the second seat body.

[0026] One end of the guide rod passes through the second seat body and is connected to the second locking assembly. The interval between the first seat body and the second seat body can be adjusted by the second locking assembly, and the spacing between the first seat body and the second seat body can be adjusted, and fixed and locked after adjustment.

[0027] 7. In the adjustable retractor provided by the utility model, the second locking assembly is connected to one end of the guide rod through a thread, and the second seat body can be raised and lowered by rotating the second locking assembly, so that the second seat body is fitted with the lower end of the operating table.

[0028] 8. The adjustable retractor provided by the utility model has an operating handle connected to the second locking assembly via a rotating shaft, and the operating handle can be perpendicular to the guide rod by rotating. After the operating handle is perpendicular to the guide rod, the fixing base and the operating bed can be tightened by rotating the operating handle.

[0029] 9. The adjustable retractor provided by the utility model is connected between the cross bar and the retractor by a mounting assembly, and the mounting assembly has a third connecting portion for connecting the cross bar and a fourth connecting portion for connecting the retractor, and the third connecting portion and the fourth connecting portion are rotatably connected to each other, so as to realize an adjustable connection of the retractor relative to the cross bar.

[0030] 10. The adjustable retractor provided by the utility model, the fourth connecting part includes: a connecting seat and a sliding rod slidably connected to the connecting seat, the retractor is connected to the sliding rod, which can realize the fixed connection between the connecting seat and the cross bar, and the retractor is lifted and lowered in the vertical direction by the sliding of the sliding rod in the connecting seat.

[0031] The sliding rod is provided with a rack structure, and the connecting seat is provided with a gear that matches the rack structure. The connecting seat is connected to a rotating member connected to the gear. The gear is driven to rotate by the rotating member, which can drive the rack to slide back and forth in the connecting seat, thereby driving the retraction member connected to the sliding rod to rise, thereby adjusting the retraction member to the required position. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 A three-dimensional diagram of a specific implementation of the adjustable retractor provided in the embodiment of the utility model;

[0034] Figure 2 An exploded view of a specific implementation of the adjustable retractor provided in the embodiment of the utility model;

[0035] Figure 3 for Figure 1 A right side view of the middle locking assembly in the unlocked state;

[0036] Figure 4 for Figure 3 A right side view of the middle locking assembly in the locked state;

[0037] Figure 5 for Figure 1 A three-dimensional diagram of the mid-bend structure;

[0038] Figure 6 for Figure 1A schematic diagram of the front view of the connection between the middle fixing seat and the operating table;

[0039] Figure 7 for Figure 1 A three-dimensional diagram of the connection between the middle mounting assembly and the crossbar;

[0040] Figure 8 for Figure 7 A perspective view of the gear, rack structure and release button of the mounting assembly;

[0041] Fig. 9 for Figure 1 A three-dimensional schematic diagram of the specific adjustment of the middle crossbar, the vertical rod and the locking assembly during use;

[0042] Fig.10 It is a three-dimensional schematic diagram of the retractor before the improvement of the utility model.

[0043] Description of reference numerals:

[0044] 1. Crossbar; 2. Vertical bar; 3. Distraction piece; 4. First connection part; 5. Second connection part; 6. First locking shaft; 7. Toothed structure; 8. Nut; 9. Pressing handle; 10. Bending structure; 11. First seat body; 12. Second seat body; 13. Guide rod; 14. Second locking assembly; 15. Operating handle; 16. Connecting seat; 17. Sliding rod; 18. Rack structure; 19. Gear; 20. Rotating piece; 21. First pin; 22. Second pin; 23. Third pin; 24. Fourth pin; 25. Second locking shaft; 26. Rod sleeve; 27. Release button; 28. Elastic piece; 29. ​​Distraction piece handle; 30. Fifth pin; 31. Operating bed; 32. Slide slot. DETAILED DESCRIPTION

[0045] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0046] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0049] like Figure 1 , Figure 2 As shown, a specific implementation of the adjustable retractor provided in this embodiment includes: at least one cross bar 1, at least one vertical bar 2 and a locking assembly, at least one of the cross bar 1 is connected to a retractor 3, and at least one of the vertical bars 2 is connected to a fixing seat; the locking assembly is used to connect the vertical bars 2 and the cross bar 1, and the locking assembly has a first connecting portion 4 for connecting the vertical bars 2 and a second connecting portion 5 for connecting the cross bar 1, and the first connecting portion 4 and the second connecting portion 5 are rotatably connected.

[0050] The adjustable retractor provided in this embodiment has a fixed seat on the vertical pole 2 for connecting to the operating table 31, and a retractor 3 is connected to the horizontal bar 1 for retracting bones or soft tissues. The vertical pole 2 and the horizontal bar 1 are respectively connected by the first connecting part 4 and the second connecting part 5 of the locking assembly. The vertical pole 2 and the horizontal bar 1 can be rotated by the rotation between the first connecting part 4 and the second connecting part 5, so as to achieve the adjustment of the retractor hook angle during retraction.

[0051] like Figure 3 As shown, in the adjustable retractor provided in this embodiment, the first connecting part 4 and the second connecting part 5 are connected by a first locking shaft 6, and the connecting surfaces of the first connecting part 4 and the second connecting part 5 are respectively provided with tooth-shaped structures 7 that are suitable for mutual engagement and are evenly arranged around the circumference of the first locking shaft 6. Such an arrangement can achieve stable locking between the vertical rod 2 and the horizontal rod 1 after the angle is adjusted.

[0052] Of course, the above description is not restrictive, and in some alternative embodiments, the toothed structure 7 may not be provided, and locking may be performed only by relying on the friction between the first connecting portion 4 and the second connecting portion 5 .

[0053] like Figure 3As shown, in the adjustable retractor provided in this embodiment, the first locking shaft 6 is connected with a first locking assembly, and the first locking assembly includes a nut 8 connected to the first locking shaft 6 through a thread. Such an arrangement can achieve fixed locking between the second connecting portion 5 of the locking assembly and the crossbar 1.

[0054] Of course, the above description is not restrictive, and in some alternative embodiments, the first connecting component can be configured as other connection forms besides threaded connection.

[0055] like Figure 3 , Figure 4 As shown, in the adjustable retractor provided in this embodiment, the locking assembly further includes a pressing handle 9 connected to the first locking shaft 6 via a rotating shaft. With such a configuration, the angle between the first connecting portion 4 and the second connecting portion 5 can be locked more conveniently. Specifically, the rotating shaft is a first pin 21, and the pressing handle 9 has a first abutting portion protruding outwardly eccentrically relative to the first pin 21. When the pressing handle 9 is pressed downward, the first abutting portion can press the first connecting portion 4 and the second connecting portion 5 against each other, so that the toothed structures 7 of the joint surfaces are meshed with each other, thereby changing the locking assembly from a non-locking state to a locking state.

[0056] Of course, the above description is not restrictive. In some alternative embodiments, the pressing handle 9 may not be provided, and other methods may be used to directly fix and lock the cross bar 1 and the vertical bar 2.

[0057] like Figure 1 , Figure 5 As shown, in the adjustable retractor provided in this embodiment, at least part of the crossbar 1 and / or the vertical bar 2 has a bending structure 10, and the diameter at the bending structure 10 is thinned so that the bending structure 10 of the crossbar 1 or the vertical bar 2 can also pass through the locking assembly. In this way, the locking assembly can pass through the bending structure 10 on the crossbar 1 and / or the vertical bar 2, which is convenient for subsequent adjustment of the angle between the crossbar 1 and the vertical bar 2. Specifically, the diameter at the bending structure 10 is thinned, so that the sliding assembly can turn when passing through the bending structure 10 of this rod.

[0058] Of course, the above description is not restrictive, and in some alternative embodiments, the bending structure 10 on the crossbar 1 and / or the vertical bar 2 may not be provided.

[0059] like Figure 6As shown, in the adjustable retractor provided in this embodiment, the fixed seat includes a first seat body 11 for connecting with the vertical rod 2, a second seat body 12 spaced apart from the first seat body 11, and a guide rod 13 connected between the first seat body 11 and the second seat body 12. Such an arrangement can realize the connection between the first seat body 11 and the second seat body 12.

[0060] Of course, the above description is not restrictive, and in some alternative embodiments, the first base body 11 and the second base body 12 can also be configured as an integral structure.

[0061] like Figure 6 As shown, in the adjustable retractor provided in this embodiment, one end of the guide rod 13 passes through the second seat body 12 and is connected to the second locking assembly 14, and the interval between the first seat body 11 and the second seat body 12 is adjusted by the second locking assembly 14. In this way, the interval between the first seat body 11 and the second seat body 12 can be adjusted, and fixed and locked after adjustment.

[0062] Of course, the above description is not restrictive. In some alternative embodiments, the second locking assembly 14 may not be provided separately, and internal and external threads may be directly provided on the second connecting seat 16 and the guide rod 13 for thread locking and fixing.

[0063] like Figure 6 As shown, in the adjustable retractor provided in this embodiment, the second locking assembly 14 is threadedly connected to one end of the guide rod 13. In this way, the second seat body 12 can be raised and lowered by rotating the second locking assembly 14, so that the second seat body 12 is fitted to the lower end of the operating table 31.

[0064] Of course, the above description is not restrictive, and in some alternative embodiments, the second locking assembly 14 and one end of the guide rod 13 may also be connected in other connection ways.

[0065] like Figure 6 As shown, in the adjustable retractor provided in this embodiment, the second locking assembly 14 is connected with an operating handle 15 via a rotating shaft, and the operating handle 15 can be perpendicular to the guide rod 13 by rotating. In this way, after the operating handle 15 is perpendicular to the guide rod 13, the fixing seat and the operating bed 31 can be tightened by rotating the operating handle 15. Specifically, the rotating shaft is a second pin 22, and the operating handle 15 has a second abutting portion that protrudes eccentrically outward relative to the second pin 22. The operating handle 15 is rotated upward to be perpendicular to the guide rod 13, so that the operating handle 15 can rotate around the guide rod 13 on a horizontal plane, thereby fixing and locking the fixing seat and the operating bed 31.

[0066] Of course, the above description is not restrictive, and in some alternative embodiments, the operating handle 15 may not be provided, and the second locking assembly 14 may be directly screwed.

[0067] like Figure 7 As shown, in the adjustable retractor provided in this embodiment, the cross bar 1 and the retractor 3 are connected by a mounting assembly, and the mounting assembly has a third connection part for connecting the cross bar 1 and a fourth connection part for connecting the retractor 3, and the third connection part and the fourth connection part are rotatably connected. In this way, the position of the retractor 3 relative to the cross bar 1 can be adjusted. Specifically, the third connection part includes a rod sleeve 26 and a second locking shaft 25 passing through the rod sleeve 26. The rod sleeve 26 is a U-shaped structure with a through hole. The cross bar 1 passes through the through hole of the rod sleeve 26. The second locking shaft 25 locks the rod sleeve 26 and the cross bar 1 by passing through the rod sleeve 26.

[0068] Of course, the above description is not restrictive, and in some alternative embodiments, the third connecting portion and the fourth connecting portion may also be directly configured as an integral structure.

[0069] like Figure 7 As shown, in the adjustable retractor provided in this embodiment, the fourth connection part includes: a connection seat 16 and a sliding rod 17 slidably connected in the connection seat 16, and the retractor 3 is connected to the sliding rod 17. In this way, the connection seat 16 and the cross bar 1 can be fixedly connected, and the retractor 3 is lifted and lowered in the vertical direction by the sliding of the sliding rod 17 in the connection seat 16. Specifically, the upper end of the sliding rod 17 is fixedly connected to the retractor handle 29 through the fifth pin 30, and the retractor handle 29 is moved up and down to realize the up and down movement of the sliding rod 17, thereby driving the retractor 3 to be lifted and lowered in the vertical direction.

[0070] Of course, the above description is not restrictive. In some alternative embodiments, the sliding rod 17 may not be provided, and the retractor 3 is directly mounted on the connecting seat 16 so as to be slidably connected to the connecting seat 16 .

[0071] like Figure 7As shown, in the adjustable retractor provided in this embodiment, the sliding rod 17 is provided with a rack structure 18, the connecting seat 16 is provided with a gear 19 matched with the rack structure 18, and the connecting seat 16 is connected with a rotating member 20 connected with the gear 19, and the gear 19 is driven to rotate by the rotating member 20 to drive the rack to slide back and forth in the connecting seat 16. Such an arrangement further drives the retractor 3 connected to the sliding rod 17 to rise, thereby adjusting the retractor 3 to a desired position, and specifically, the rotating member 20 is fixedly connected with the gear 19 through the third pin 23, so that when the rotating member 20 is rotated, the gear 19 is further rotated.

[0072] Of course, the above description is not restrictive. In some alternative embodiments, the rack structure 18 and the gear 19 are also replaced by other structural forms that can lock the retractor after lifting.

[0073] like Figure 1 , Figure 7 , Figure 8 As shown, in the adjustable retractor provided in this embodiment, a release button 27 is provided on the connecting seat 16, and the release button 27 is rotatably set on the connecting seat 16. The release button 27 has a pawl with one end inserted into the rack structure 18 of the sliding rod 17, and an elastic member 28 is connected to the release button 27. The elastic member 28 has an elastic force that drives the pawl of the release button 27 to rotate upward to insert into the rack structure 18 of the sliding rod 17; when the rack structure 18 slides upward, the pawl can be driven to overcome the elastic force of the elastic member 28 and automatically release the lock of the rack structure 18; when the rack structure 18 slides downward, the pawl abuts against the rack structure 18 to prevent the rack structure 18 from descending; specifically, the release button 27 has a through hole, and a fourth pin 24 passes through the through hole to enable the release button 27 to be rotatably connected to the connecting seat 16.

[0074] Of course, the above description is not restrictive, and in some alternative embodiments, the release button 27 may be omitted, or may be replaced by other structures that can lock the retractor 3 .

[0075] like Fig. 9 As shown, a specific implementation of the crossbar 1, the vertical bar 2 and the locking assembly provided in this embodiment during use, the crossbar 1 and the vertical bar 2 are rotatably connected through the locking assembly, the vertical bar 2 can slide vertically through the first connection part 4 of the locking assembly, the crossbar 1 can slide horizontally through the second connection part 5 of the locking assembly, and rotate in the plane direction and slide vertically around the vertical bar 2. With this arrangement, the spatial position of the crossbar 1 and the vertical bar 2 can be adjusted.

[0076] Of course, the above description is not restrictive, and in some alternative embodiments, the cross bar 1 and the vertical bar 2 may also be locked in other ways to adjust the spatial position and fix them.

[0077] Directions:

[0078] like Figure 6 As shown, when the retractor is connected to the operating bed 31, the operating handle 15 is first turned upward to make it perpendicular to the guide rod 13, and then the operating handle 15 is rotated around the guide rod 13 in a horizontal plane, thereby driving the second locking assembly 14 threadedly connected to the lower end of the guide rod 13 to rotate, and the second seat body 12 is raised and lowered by rotating the second locking assembly 14, so that the second seat body 12 is fitted with the lower end of the operating bed 31, and the fixing seat and the operating bed 31 can be locked and fixed.

[0079] like Figure 3 , Figure 4 , Fig. 9 As shown, when adjusting the angles of the horizontal bar 1 and the vertical bar 2, first adjust the locking assembly to Figure 3 In the state shown, the lock between the first connecting part 4 and the second connecting part 5 is released, and then the position of the vertical pole 2 in the first connecting part 4 is adjusted, and the position of the cross bar 1 in the second connecting part 5 is adjusted. The angle between the cross bar 1 and the vertical pole 2 is adjusted by rotation, and finally the pressing handle 9 is pressed downward to lock and fix the vertical pole 2 and the cross bar 1.

[0080] like Figure 7 , Figure 8 As shown, when adjusting the position of the retractor 3, first slide the third connection portion of the mounting assembly on the cross bar 1 to the desired position and lock it; when the retractor 3 needs to slide upward, lift the retractor handle 29 to allow the rack structure 18 to drive the retractor 3 to rise, thereby achieving a larger adjustment of the retractor 3; when the retractor 3 needs to slide downward, press the release button 27 with one hand and operate the handle of the retractor 3 with the other hand to move the retractor 3 downward.

[0081] During surgery, when the retractor 3 needs to be slid upward, the gear 19 is driven to rotate by rotating the rotating member 20, thereby driving the rack structure 18 to rise in the connecting seat 16. During the entire process of the rack structure 18 sliding upward, the rack structure 18 can drive the pawl to overcome the elastic force of the elastic member 28 and automatically release the lock of the rack structure 18 until the retractor 3 rises to the desired position, and the pawl of the release button 27 can be automatically locked and fixed; when the retractor 3 needs to be slid downward, the release button 27 is pressed, the elastic member 28 is compressed and the release button 27 rotates around the fourth pin 24, thereby releasing the lock of the rack structure 18; then the rotating member 20 is rotated in the opposite direction, and the rack is driven downward by the gear 19. When the retractor 3 slides down to the desired position, the pawl of the release button 27 is abutted against the rack structure 18 to prevent the rack structure 18 from descending.

[0082] After the operation is over, the third connection portion of the installation assembly is rotated and loosened, and the installation assembly and the retractor 3 can be disassembled for use in the next operation.

[0083] like Fig.10 As shown, a specific embodiment of the retractor before improvement is shown, comprising: a vertical rod 2 and a retractor 3 fixedly connected to the vertical rod 2, wherein the vertical rod 2 has a slide groove 32 for inserting the retractor 3, through which the retractor 3 can be directly installed on the vertical rod 2, and the retractor 3 can slide along the slide groove 32, so as to adjust the length of the retractor 3 extending out of the slide groove 32. In the above structure, the angle between the retractor 3 and the vertical rod 2 cannot be adjusted, and the angle of the retractor 3 cannot be adjusted according to the human body structure, which is not conducive to the convenience of the retractor when used.

[0084] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the present utility model.

Claims

1. An adjustable retractor, characterized in that: include: At least one cross bar (1) and at least one vertical bar (2), at least one of the cross bars (1) is connected to a pull-out member (3), and at least one of the vertical bars (2) is connected to a fixing seat; A locking assembly is used to connect the vertical rod (2) and the horizontal rod (1), and the locking assembly has a first connecting part (4) for connecting the vertical rod (2) and a second connecting part (5) for connecting the horizontal rod (1), and the first connecting part (4) and the second connecting part (5) are rotatably connected.

2. The adjustable retractor according to claim 1, characterized in that: The first connecting portion (4) and the second connecting portion (5) are connected via a first locking shaft (6), and connecting surfaces of the first connecting portion (4) and the second connecting portion (5) are respectively provided with toothed structures (7) evenly arranged around the circumference of the first locking shaft (6) and suitable for mutual engagement.

3. The adjustable retractor according to claim 2, characterized in that: The first locking shaft (6) is connected to a first locking assembly, and the first locking assembly comprises a nut (8) connected to the first locking shaft (6) via a thread.

4. The adjustable retractor according to claim 3, characterized in that: The locking assembly also includes a pressing handle (9) connected to the first locking shaft (6) via a rotating shaft.

5. The adjustable retractor according to claim 1, characterized in that: At least part of the crossbar (1) and / or the vertical bar (2) has a bending structure (10), and the diameter at the bending structure (10) becomes thinner so that the bending structure (10) of the crossbar (1) or the vertical bar (2) can also pass through the locking assembly.

6. The adjustable retractor according to any one of claims 1 to 5, characterized in that: The fixing seat comprises a first seat body (11) for connecting with the vertical pole (2), a second seat body (12) spaced apart from the first seat body (11), and a guide rod (13) connected between the first seat body (11) and the second seat body (12); One end of the guide rod (13) passes through the second base body (12) and is connected to a second locking assembly (14), and the interval between the first base body (11) and the second base body (12) is adjusted by the second locking assembly (14).

7. The adjustable retractor according to claim 6, characterized in that: The second locking assembly (14) is connected to one end of the guide rod (13) via a thread.

8. The adjustable retractor according to claim 7, characterized in that: The second locking assembly (14) is connected to an operating handle (15) via a rotating shaft, and the operating handle (15) can be perpendicular to the guide rod (13) by rotating.

9. The adjustable retractor according to any one of claims 1 to 5, characterized in that: The cross bar (1) and the retracting member (3) are connected via a mounting assembly, wherein the mounting assembly comprises a third connecting portion for connecting the cross bar (1) and a fourth connecting portion for connecting the retracting member (3), wherein the third connecting portion and the fourth connecting portion are rotatably connected.

10. The adjustable retractor according to claim 9, characterized in that: The fourth connection portion comprises: a connection seat (16) and a sliding rod (17) slidably connected in the connection seat (16), and the retracting member (3) is connected to the sliding rod (17); The sliding rod (17) is provided with a rack structure (18), the connecting seat (16) is provided with a gear (19) matched with the rack structure (18), and the connecting seat (16) is connected with a rotating member (20) connected with the gear (19), and the gear (19) is driven to rotate by the rotating member (20) to drive the rack to slide back and forth in the connecting seat (16).

Images