A pectus excavatum orthosis

Abstract

The application relates to the technical field of minimally invasive surgical instruments, in particular to a pectus carinatum orthosis, which comprises a first mounting block and a second mounting block, a plurality of first supporting blocks are arranged on the side wall of the first mounting block, a plurality of receiving blocks are arranged on the side wall of the first supporting blocks, the first supporting blocks close to the first mounting block are rotationally connected with the first mounting block, the receiving blocks are rotationally connected with the first supporting blocks, the first supporting blocks are sequentially arranged through the receiving blocks, the first supporting blocks away from the first mounting block are rotationally connected with the second mounting block, a threading hole is arranged on the side wall of each first supporting block, a first traction rope is arranged in the threading hole, and a control assembly for traction of the first traction rope is arranged on the side wall of the first mounting block. The application has the effect of making the bending of the orthosis more convenient and reducing the bending difficulty of the staff in the process of bending the orthosis.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of minimally invasive surgical instruments, in particular to a pectus carinatum orthosis. BACKGROUND

[0002] Pectus carinatum is a most common congenital disease of chest wall depression, due to the excessive abnormal growth of costal cartilage on both sides of sternum, causing the sternum to sink, and the symptoms of severe patients will compress the heart and lung, causing symptoms such as difficulty breathing, chest pain and abnormal heart and lung function. Abnormal heart and lung function is less common in young children, and often becomes serious at puberty. Usually, minimally invasive surgery is needed to correct and treat, and a corrector is needed to assist in recovery.

[0003] A telescopic pectus carinatum thoracic orthopedic steel plate with publication number CN205379321U includes a first steel plate, a second steel plate and a connecting sheath with a sheath mouth and a sheath tail. One end of the first steel plate is connected with the sheath tail, and the other end of the first steel plate extends out a butterfly wing. The butterfly wing is symmetrically provided with a first circular hole and a second circular hole at both ends. The sheath mouth is provided with a limiting block. One end of the second steel plate is provided with a groove, and the limiting block is placed in the groove and can slide along the groove. The other end of the second steel plate is provided with a third circular hole. In actual use, the bending position of the orthopedic steel plate is set according to the 3D printed chest contour entity model of the child, and finally the orthopedic steel plate is sutured on the muscle of the chest wall.

[0004] The inventor believes that the above-mentioned thoracic orthopedic steel plate needs to be bent according to the 3D printed chest contour of the patient before the operation. Since the steel plate has strong toughness, there is a problem of difficult bending, which needs to be improved. SUMMARY

[0005] In order to facilitate the staff to bend the orthosis and reduce the difficulty of bending the orthosis, the present application provides a pectus carinatum orthosis.

[0006] The pectus carinatum orthosis provided by the present application adopts the following technical scheme:

[0007] A pectus carinatum orthosis includes a first mounting block and a second mounting block. A plurality of first support blocks are provided on the side wall of the first mounting block. A plurality of receiving blocks are provided on the side wall of the first support block. The first support block close to the first mounting block is rotationally connected with the first mounting block. The receiving block is rotationally connected with the first support block. A plurality of first support blocks are sequentially arranged by being connected through the receiving blocks. The first support block away from the first mounting block is rotationally connected with the second mounting block. A threading hole is formed in the side wall of the first support block. A first traction rope is threaded in the threading hole. A control assembly for traction of the first traction rope is provided on the side wall of the first mounting block.

[0008] By adopting the technical scheme, when the control assembly pulls the first traction rope, the plurality of first supporting blocks rotate, the plurality of supporting blocks rotate, the first supporting blocks and the supporting blocks form a curved support, and the worker drives the tightness of the first traction rope according to the condition of the patient, thereby controlling the bending degree of the support formed by the first supporting blocks and the supporting blocks. After adjusting the tightness of the first traction rope, the first mounting block and the second mounting block are fixed on the rib of the patient, so that the orthosis is located in the chest cavity of the patient, the rib in the chest cavity of the patient is supported, and the supporting blocks are connected together. The way of controlling the bending degree of the orthosis by controlling the tightness of the first traction rope is simple in operation and high in maneuverability, and reduces the difficulty of bending the orthosis.

[0009] Optionally, the control assembly comprises a traction pin rotatably connected to the first mounting block, a ratchet fixed to the outer wall of the traction pin, and a pawl rotatably connected to the first mounting block, the pawl is matched with the ratchet, the end of the first traction rope is fixedly connected with the outer wall of the traction pin, the end of the first traction rope away from the traction pin is fixedly connected with the second mounting block, and the first mounting block is provided with an elastic element for abutting the pawl against the ratchet.

[0010] By adopting the technical scheme, the traction pin is rotated to drive the ratchet to rotate, the pawl slides on the outer wall of the ratchet, the end of the first traction rope close to the traction pin is wound on the outer wall of the traction pin, and after the adjustment of the first traction rope is completed, the tip of the pawl is abutted against the ratchet under the self-rebound force of the elastic element, so as to abut the pawl against the ratchet, limit the rotation of the ratchet, prevent the first traction rope from driving the ratchet to rotate, and thus make the support of the orthosis more stable.

[0011] Optionally, the first mounting block is threadedly connected with a driving pin, the end of the driving pin is fixedly provided with an abutting ball, the abutting ball abuts against the side wall of the pawl, and the driving pin is rotated to make the pawl disengage from the ratchet.

[0012] By adopting the technical scheme, the worker rotates the driving pin, the driving pin drives the abutting ball to slide, the abutting ball abuts against the side wall of the pawl, the pawl is rotated away from the ratchet, and at this time the first traction rope can drive the ratchet to rotate, so that the first traction rope is in a relaxed state.

[0013] Optionally, a plug-in slot is formed in the side wall of the first mounting block, a fixed plate is arranged on the side of the first mounting block away from the first supporting block, the fixed plate is plug-in fixed with the plug-in slot, a plurality of first fixing holes are formed in the side wall of the fixed plate, and a second fixing hole is formed in the side wall of the first mounting block.

[0014] By adopting the technical scheme, the staff inserts the fixing plate into the insertion groove, the second fixing hole is communicated with the first fixing hole at the middle position of the fixing plate, the fixing plate is fixed on the rib by lashing, and the installation of the orthosis is realized. The first mounting block is inserted and fixed with the fixing plate, the first mounting block and the fixing plate have a relative rotation trend, and the orthosis is more flexible.

[0015] Optionally, a limiting groove is formed on one side of the fixing plate facing the first mounting block, and one end of the first mounting block facing the fixing plate is inserted into the inner wall of the limiting groove.

[0016] By adopting the technical scheme, the staff inserts the fixing plate into the insertion groove, the second fixing hole is communicated with the first fixing hole at the middle position of the fixing plate, the fixing plate is fixed on the rib by lashing, and the installation of the orthosis is realized. The first mounting block is inserted and fixed with the fixing plate, the first mounting block and the fixing plate have a relative rotation trend, and the orthosis is more flexible.

[0017] Optionally, a second supporting block is rotationally connected to one side of the receiving block away from the first supporting block, the second supporting block is rotationally connected to the receiving block, a second traction rope is arranged to pass through the second supporting block, and the second traction rope is tractioned by the second mounting block.

[0018] By adopting the technical scheme, the second supporting block is provided to improve the bearing strength of the orthosis, the first supporting block and the second supporting block are respectively located on the two sides of the receiving block, the first traction rope drives the first supporting block to rotate, the second traction rope drives the second supporting block to rotate, and the force is applied to the two sides of the receiving block, so that the rotation of the receiving block is more coordinated.

[0019] Optionally, a first winding rod and a second winding rod are rotationally connected to the side wall of the first mounting block, a first turbine is fixed to the outer wall of the first winding rod, a second turbine is fixed to the outer wall of the second winding rod, one end of the first traction rope away from the second mounting block is fixed to the outer wall of the first winding rod, one end of the second traction rope is fixedly connected with the side wall of the second mounting block, and the other end is fixedly connected with the outer wall of the second winding rod, a first worm is rotationally connected to the side wall of the second mounting block, the first worm is engaged with the first turbine, a second worm is fixed to the end of the first worm, and the second worm is engaged with the second turbine.

[0020] By adopting the technical scheme, the staff rotates the first worm to drive the second worm to rotate, the first worm is engaged with the first turbine, the second worm is engaged with the second turbine, and the first turbine and the second turbine are driven to rotate, so as to control the tightness of the first traction rope and the second traction rope, and the first turbine and the second turbine are driven to rotate by rotating the first worm, so that the tightness of the first traction rope and the second traction rope is the same, and the bending of the orthosis is uniform.

[0021] Optionally, a rotating pin is rotatably connected to the side wall of the first mounting block, the rotating pin is coaxially fixed with the first worm, and a clamping hole for rotating the rotating pin is formed in the side wall of the rotating pin.

[0022] By adopting the technical scheme, the staff inserts the tool into the clamping hole and rotates the tool to drive the rotating pin to rotate, so as to drive the first worm to rotate.

[0023] Optionally, a pulley is rotatably connected to the side wall of the first mounting block, one end of the second traction rope close to the first mounting block is fixed to the outer wall of the traction pin, the second traction rope passes through the outer wall of the pulley, and the second traction rope can drive the pulley to rotate.

[0024] By adopting the technical scheme, in the process that the staff rotates the traction pin, one end of the first traction rope close to the traction pin is wound on the outer wall of the traction pin, and one end of the second traction rope close to the traction pin is wound on the outer wall of the traction pin under the support of the pulley, so that the first traction rope and the second traction rope are synchronously adjusted.

[0025] To sum up, the present application has at least one of the following beneficial technical effects:

[0026] 1. According to the size of the measured chest of the patient, the control assembly pulls the first traction rope, so as to control the tightness of the first traction rope, so that the orthosis is in a bent state, and the chest of the patient is conveniently supported. This way of bending the orthosis by pulling the first traction rope is more simple and convenient, which brings convenience to the staff.

[0027] 2. The staff rotates the first worm, the second worm synchronously rotates, the first worm is engaged with the first turbine, the second worm is engaged with the second turbine, the first turbine and the second turbine synchronously rotate, the first traction rope and the second traction rope are synchronously pulled, so that the angles of the two sides of the receiving block rotating are the same, and the adjustment of the orthosis is more accurate. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is the overall structure schematic view of the orthosis in the first embodiment of the present application.

[0029] Figure 2This is an exploded view of the first and second support blocks in Embodiment 1 of this application, used to show the connection structure between the receiving block and the first mounting block.

[0030] Figure 3 This is an exploded view of the cover plate in Embodiment 1 of this application, used to show the structure inside the cavity of the first mounting block.

[0031] Figure 4 This is a schematic diagram of the connection structure between the fixing plate and the first mounting block in Embodiment 1 of this application.

[0032] Figure 5 This is a schematic diagram of the overall structure of the orthopedic device in Embodiment 2 of this application, used to show the connection structure between the fixing plate and the first mounting block.

[0033] Figure 6 This is a schematic diagram of the overall structure of the orthopedic device in Embodiment 3 of this application, used to show the structure inside the cavity of the first mounting block.

[0034] Figure 7 yes Figure 6 Enlarged view of point A in the middle.

[0035] Figure 8 This is a schematic diagram of the overall structure of the orthotine in Embodiment 4 of this application, used to show the structure inside the cavity of the first mounting block.

[0036] Figure 9 yes Figure 8 Enlarged view of point B in the middle.

[0037] Reference numerals: 1. First mounting block; 2. Second mounting block; 3. Mounting groove; 4. Mounting hole; 5. Pin; 6. First insertion hole; 7. Second insertion hole; 8. Shaft pin; 9. First support block; 10. Receiving block; 11. Threading hole; 12. First traction rope; 13. Control component; 14. Traction pin; 15. Ratchet; 16. Pad; 17. Elastic element; 18. Drive pin; 19. Abutment ball; 20. Insertion groove; 21. Fixing plate; 22. First fixing hole; 23. Second fixing hole; 4. Limiting groove; 25. Second support block; 26. Second traction rope; 27. First winding rod; 28. Second winding rod; 29. ​​First turbine; 30. First worm gear; 31. Second worm gear; 32. Rotating pin; 33. Snap-fit ​​hole; 34. Pulley; 35. First fixing groove; 36. Second fixing groove; 37. Mounting shaft; 38. Through hole; 39. Connecting plate; 40. First insertion block; 41. Second insertion block; 42. Threaded hole; 43. Mounting rod; 44. Cover plate; 45. Second turbine. Detailed Implementation

[0038] The following is in conjunction with the appendix Figures 1-9 This application will be described in further detail.

[0039] The embodiment of the application discloses a funnel chest orthosis.

[0040] Embodiment one:

[0041] Referring to Figure 1 and Figure 2 A funnel chest orthosis, comprising a first mounting block 1 and a second mounting block 2, the first mounting block 1 is provided with a mounting groove 3 in the width direction, the mounting groove 3 is located at the middle position of the first mounting block 1, a shaft pin 8 is clamped and fixed on the inner wall of the first mounting block 1, a receiving block 10 is rotationally connected to the outer wall of the shaft pin 8, a mounting hole 4 is provided through the side wall of the receiving block 10, two mounting holes 4 are provided in the application, a pin 5 is rotationally connected to the inner wall of the mounting hole 4, a first supporting block 9 is rotationally connected to one side of the receiving block 10, and a second supporting block 25 is rotationally connected to the other side of the receiving block 10, two first insertion holes 6 are provided in the side wall of the first supporting block 9, and two second insertion holes 7 are provided in the side wall of the second supporting block 25. The pin 5 is inserted into the second insertion hole 7, the mounting hole 4 and the first insertion hole 6, and the first supporting block 9 and the second supporting block 25 are rotationally connected to the side wall of the receiving block 10.

[0042] Referring to Figure 1 and Figure 2 The first supporting block 9 and the second supporting block 25 are arranged in one-to-one correspondence, two receiving blocks 10 are rotationally connected between the first supporting block 9 and the second supporting block 25 in the application, and the connection of the first mounting block 1 and the second mounting block 2 is a chain connection composed of a plurality of first supporting blocks 9, second supporting blocks 25 and receiving blocks 10. In the process of rotating the first mounting block 1 and the second mounting block 2, the orthosis is in a bent state.

[0043] Referring to Figure 2 The side walls of the first supporting block 9 and the second supporting block 25 are both provided with a threading hole 11, the threading hole 11 is provided along the length direction of the first supporting block 9, a first traction rope 12 is threaded in the threading hole 11 of the first supporting block 9, the first traction rope 12 is preferably made of titanium alloy in the application, the first traction rope 12 is used to connect a plurality of first supporting blocks 9 in series, and a second traction rope 26 is threaded in the threading hole 11 of the second supporting block 25, the second traction rope 26 is preferably made of titanium alloy in the application, and the second traction rope 26 is used to connect a plurality of second supporting blocks 25 in series. The staff can control the shape of the plurality of first supporting blocks 9 by controlling the tightness of the first traction rope 12, and control the shape formed by the plurality of second supporting blocks 25 by controlling the tightness of the second traction rope 26.

[0044] Referring to Figure 2 and Figure 3The side wall of the first mounting block 1 is provided with a first fixing groove 35, the inner wall of the first mounting block 1 is provided with a control assembly 13 for pulling the first pulling rope 12, one end of the first pulling rope 12 is fixed on the second mounting block 2 through a screw, the control assembly 13 comprises a pulling pin 14 rotatably connected to the inner wall of the first mounting block 1, a ratchet wheel 15 coaxially fixed on the outer wall of the pulling pin 14 and a pawl 16, a cover plate 44 is fixed on the opening of the first mounting block 1 through a screw, and the cover plate 44 seals the opening of the first mounting block 1. The inner wall of the first mounting block 1 is welded with a mounting shaft 37, the pawl 16 is rotatably connected to the outer wall of the mounting shaft 37, the outer wall of the mounting shaft 37 is provided with an elastic element 17 for limiting the rotation of the pawl 16, the elastic element 17 in the application is preferably a torsion spring, one end of the elastic element 17 is fixedly connected to the outer wall of the pawl 16, and the other end is fixedly connected to the inner wall of the first mounting block 1. Under the elastic force of the elastic element 17, the tip of the pawl 16 abuts against the outer wall of the ratchet wheel 15, the rotation of the ratchet wheel 15 is limited, and the rotation of the pulling pin 14 is limited.

[0045] With reference to Figure 3 The side wall of the first mounting block 1 is provided with a through hole 38, the through hole 38 is connected with the first fixing groove 35, the inner wall of the through hole 38 is threadedly connected with a driving pin 18, the end of the driving pin 18 is welded with an abutting ball 19, the abutting ball 19 is located in the first fixing groove 35, the abutting ball 19 abuts against the side wall of the pawl 16, and the mounting shaft 37 is located between the abutting ball 19 and the ratchet wheel 15. The staff rotates the driving pin 18, the driving pin 18 moves towards the inner cavity of the first fixing groove 35, the abutting ball 19 drives the pawl 16 to rotate around the mounting shaft 37, so that the pawl 16 is separated from the ratchet wheel 15, and at this time the pulling pin 14 can be rotated.

[0046] With reference to Figure 2 And Figure 3 The side wall of the second mounting block 2 is provided with a second fixing groove 36, the structure inside the second fixing groove 36 is same as that inside the first fixing groove 35, one end of the second pulling rope 26 is fixed on the first mounting block 1 through a screw, and the other end is located in the second fixing groove 36. The second pulling rope 26 is moved by the same structure on the inner wall of the first mounting block 1 to control the tightness of the second pulling rope 26.

[0047] With reference to Figure 3 And Figure 4The side, away from the second mounting block 2, of the first mounting block 1 is provided with a plug-in groove 20, the side, away from the second mounting block 2, of the first mounting block 1 is provided with a fixed plate 21, the side, facing the first mounting block 1, of the fixed plate 21 is welded and fixed with a first plug-in block 40, the first plug-in block 40 is plugged in the plug-in groove 20, a plurality of first fixing holes 22 are formed in the side wall of the fixed plate 21, in the application, five first fixing holes 22 are formed, the five first fixing holes 22 are arranged in a line, a second fixing hole 23 is formed in the side wall of the first plug-in block 40, the second fixing hole 23 is connected with the middle first fixing hole 22 of the fixed plate 21, the plug-in of the first plug-in block 40 and the plug-in groove 20 makes the connection of the fixed plate 21 and the first mounting block 1 more flexible, and the connection between the fixed plate 21 and the first mounting block 1 is more convenient.

[0048] With reference to Figure 3 and Figure 4 , the side, away from the first mounting block 1, of the second mounting block 2 is also connected with a fixed plate 21, and the connection mode of the fixed plate 21 and the second mounting block 2 is the same as that of the first mounting block 1 and the corresponding fixed block. The staff threads a wire in the first fixing hole 22 and the second fixing hole 23, and fixes the fixed plate 21 on the rib in the patient's chest cavity through the wire, so that the installation of the orthosis is realized.

[0049] Embodiment one of the application: the implementation principle of the funnel chest orthosis: before adjusting the orthosis, according to the 3D printed chest contour entity model of the child patient, the driving pin 18 is rotated, the driving pin 18 drives the abutting ball 19 to slide towards the direction of the ratchet pawl 16, so that the ratchet pawl 16 rotates around the mounting shaft 37, the ratchet pawl 16 is separated from the ratchet wheel 15, at this time, the traction pin 14 is rotated, the first traction rope 12 and the second traction rope 26 are tightened, so that the shape of the orthosis is the same as that of the chest contour entity model of the patient, the wire is threaded through the first fixing hole 22 and the second fixing hole 23, and the fixed plate 21 is bound to the rib in the patient's chest cavity, so that the installation of the orthosis is realized.

[0050] Embodiment two:

[0051] The difference from embodiment one is that, with reference to Figure 5 , the side, facing the first mounting block 1, of the fixed plate 21 is welded and fixed with a connecting plate 39, in the application, the connecting plate 39 is vertically arranged with the fixed plate 21, the side, away from the fixed plate 21, of the connecting plate 39 is provided with a limiting groove 24, the side, facing the fixed plate 21, of the first mounting block 1 is welded and fixed with a second plug-in block 41, one end of the second plug-in block 41, facing the connecting plate 39, is plug-in fixed with the limiting groove 24, the side walls of the connecting plate 39 and the second plug-in block 41 are both provided with a threaded hole 42, the two threaded holes 42 are connected, and the connecting plate 39 and the second plug-in block 41 are fixed through bolts.

[0052] With reference toFigure 5 The structure of the second mounting block 2 is the same as the shape of the first mounting block 1, and the convenience of the connection between the second mounting block and the fixing plate 21 is improved by adopting the plug-in and bolt fixing mode.

[0053] In the second embodiment of the present application, the implementation principle is the same as that of the first embodiment.

[0054] Embodiment three:

[0055] Embodiment three, which is different from embodiment one, is as follows: Figure 6 and Figure 7 One end of the second traction rope 26 close to the second mounting block 2 is fixed on the second mounting block 2 by a screw, a mounting rod 43 is welded and fixed on the inner wall of the first mounting block 1, a pulley 34 is installed on the outer wall of the mounting rod 43, one end of the second traction rope 26 away from the second mounting block 2 is fixed on the outer wall of the traction pin 14 by passing through the pulley 34, a partition plate 45 is welded and fixed on the outer wall of the traction pin 14, the first traction rope 12 and the second traction rope 26 are located on the two sides of the partition plate 45, and the partition plate separates the first traction rope 12 and the second traction rope 26 to prevent the first traction rope 12 and the second traction rope 26 from being entangled.

[0056] In the third embodiment of the present application, the implementation principle of the funnel-shaped chest orthosis is as follows: rotating the driving pin 18 drives the abutting ball 19 to move towards the outer wall of the ratchet pawl 16, the ratchet pawl 16 is separated from the ratchet wheel 15 under the abutment of the abutting ball 19, the traction pin 14 is rotated, the pulley 34 is rotated, one end of the first traction rope 12 away from the second mounting block 2 is wound on the outer wall of the traction pin 14, one end of the second traction rope 26 away from the second mounting block 2 is wound on the outer wall of the traction pin 14, and the first traction rope 12 and the second traction rope 26 are adjusted synchronously, so that the bending conditions of the two sides of the receiving block 10 are the same.

[0057] Embodiment four, which is different from embodiment three, is as follows: Figure 8 and Figure 9 The first winding rod 27 and the second winding rod 28 are rotationally connected to the inner wall of the first mounting block 1, the first winding rod 27 and the second winding rod 28 are arranged in parallel, one end of the first traction rope 12 away from the second mounting block 2 is welded and fixed on the outer wall of the first winding rod 27, and one end of the second traction rope 26 away from the second mounting block 2 is welded and fixed on the outer wall of the second winding rod 28.

[0058] Referring to Figure 8 and Figure 9, the outer wall of the first winding rod 27 is coaxially fixed with the first turbine 29, the outer wall of the second winding rod 28 is coaxially fixed with the second turbine 45, the inner wall of the first mounting block 1 is rotatably connected with the first worm 30 and the second worm 31, the first worm 30 is engaged with the first turbine 29, the second worm 31 is engaged with the second turbine 45, the first worm 30 is coaxially fixed with the second worm 31, the end of the first worm 30 away from the second worm 31 is coaxially fixed with the rotating pin 32, the rotating pin 32 is rotatably connected with the first mounting block 1, the side of the rotating pin 32 away from the first mounting block 1 is provided with the clamping hole 33, and the shape of the clamping hole 33 is hexagonal in the application. The staff clamps the screwdriver in the clamping hole 33, rotates the screwdriver to drive the first worm 30 and the second worm 31 to rotate, and the first turbine 29 and the second turbine 45 rotate synchronously, so that the tightness of the first traction rope 12 and the second traction rope 26 is adjusted.

[0059] In the fourth embodiment of the application, the implementation principle of the funnel-shaped chest orthosis is as follows: the staff rotates the rotating pin 32 according to the 3D printed chest contour entity model of the child, the rotating pin 32 drives the first worm 30 and the second worm 31 to rotate, the first worm 30 is engaged with the first turbine 29, the second worm 31 is engaged with the second turbine 45, the first turbine 29 and the second turbine 45 are rotated, the end of the first traction rope 12 away from the second mounting block 2 is wound on the outer wall of the first winding rod 27, the end of the second traction rope 26 away from the second mounting block 2 is wound on the outer wall of the second winding rod 28, the adjustment of the first traction rope 12 and the second traction rope 26 is realized, and finally the fixing block is fixed on the rib in the chest cavity of the patient by lacing, so that the installation of the orthosis is realized.

[0060] The above are preferred embodiments of the application, and are not intended to limit the protection scope of the application, therefore: any equivalent changes made on the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A pectus excavatum orthosis characterized by: The utility model provides a kind of installation block, including first installation block (1) and second installation block (2), the side wall of first installation block (1) is provided with several first support block (9), the side wall of first support block (9) is provided with several receiving block (10), the first support block (9) of first installation block (1) is rotatably connected with first installation block (1), receiving block (10) is rotatably connected with first support block (9), several first support block (9) are sequentially arranged by receiving block (10), the first support block (9) of first installation block (1) is rotatably connected with second installation block (2), the side wall of first support block (9) is all provided with threading hole (11), first traction rope (12) is arranged in threading hole (11), the side wall of first installation block (1) is provided with control assembly (13) for pulling first traction rope (12). The control assembly (13) includes a traction pin (14) rotatably connected to the first installation block (1), a ratchet wheel (15) fixed to the outer wall of the traction pin (14), and a pawl (16) rotatably connected to the first installation block (1). The pawl (16) cooperates with the ratchet wheel (15). The end of the first traction rope (12) is fixedly connected to the outer wall of the traction pin (14). The end of the first traction rope (12) away from the traction pin (14) is fixedly connected to the second installation block (2). The first installation block (1) is provided with an elastic member (17) for abutting the pawl (16) and the ratchet wheel (15). The side of the receiving block (10) away from the first support block (9) is rotatably connected with a second support block (25). The second support block (25) is rotatably connected with the receiving block (10). A second traction rope (26) is arranged through the second support block (25). The second traction rope (26) is pulled by the second installation block (2). A first winding rod (27) and a second winding rod (28) are rotatably connected to the side wall of the first installation block (1). A first turbine (29) is fixed to the outer wall of the first winding rod (27). A second turbine (45) is fixed to the outer wall of the second winding rod (28). The end of the first traction rope (12) away from the second installation block (2) is fixed to the outer wall of the first winding rod (27). One end of the second traction rope (26) is fixedly connected to the side wall of the second installation block (2), and the other end is fixedly connected to the outer wall of the second winding rod (28). A first worm (30) is rotatably connected to the side wall of the second installation block (2). The first worm (30) is engaged with the first turbine (29). The end of the first worm (30) is fixed with a second worm (31). The second worm (31) is engaged with the second turbine (45).

2. The pectus excavatum orthosis of claim 1, wherein: The first mounting block (1) is threadedly connected with a driving pin (18), the end of the driving pin (18) is fixed with an abutting ball (19), the abutting ball (19) abuts against the side wall of the pawl (16), and rotating the driving pin (18) makes the pawl (16) disengage from the ratchet wheel (15).

3. A pectus excavatum orthosis according to claim 2, characterized in that: The side wall of the first mounting block (1) is provided with an insertion slot (20), the side, away from the first supporting block (9), of the first mounting block (1) is provided with a fixed plate (21), the fixed plate (21) is inserted and fixed with the insertion slot (20), the side wall of the fixed plate (21) is provided with a plurality of first fixing holes (22), and the side wall of the first mounting block (1) is provided with a second fixing hole (23).

4. The pectus excavatum orthosis of claim 3, wherein: The side, towards the first mounting block (1), of the fixed plate (21) is provided with a limiting slot (24), and one end of the first mounting block (1), towards the fixed plate (21), is inserted into the inner wall of the limiting slot (24).

5. The pectus excavatum orthosis of claim 1, wherein: The side wall of the first mounting block (1) is rotatably connected with a rotating pin (32), the rotating pin (32) is coaxially fixed with the first worm (30), and the side wall of the rotating pin (32) is provided with a clamping hole (33) for rotating the rotating pin (32).

6. The pectus excavatum orthosis of claim 1, wherein: The side wall of the first mounting block (1) is rotatably connected with a pulley (34), one end of the second traction rope (26), close to the first mounting block (1), is fixed on the outer wall of the traction pin (14), the second traction rope (26) passes around the outer wall of the pulley (34), and the second traction rope (26) can drive the pulley (34) to rotate.

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