Adjustable thoracic cavity opening device for thoracic surgery department

Abstract

The invention discloses an adjustable thoracic cavity distraction device for the thoracic surgery department, and relates to the technical field of distraction devices.The adjustable thoracic cavity distraction device comprises a rectangular frame, an inner distraction mechanism for distraction of the thoracic cavity is arranged in the frame, and an adjusting mechanism for changing the distraction angle of the thoracic cavity is further arranged in the inner distraction mechanism; a limiting mechanism used for preventing the inner supporting mechanism from resetting is arranged on the side face of the frame, a stabilizing mechanism used for preventing the inner supporting mechanism from shaking is arranged at the bottom of the frame, and a protection mechanism used for preventing the inner supporting mechanism from being separated from the chest is arranged at the bottom of the inner supporting mechanism. The chest can be opened more stably by uniformly applying distraction force to the two sides through the supporting rod, excessive traction or compression of local tissue caused by a traditional external pulling mode is avoided, meanwhile, the traditional external pulling mode often needs an assistant to manually maintain the tension of the drag hook, the internal supporting mechanism can automatically maintain the distraction state and release manpower, and independent operation of a surgeon and a doctor is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of expansion devices, and in particular to an adjustable chest expansion device for thoracic surgery. Background Art

[0002] In thoracic surgery, chest expanders play a vital role. Their main function is to open the chest cavity so that surgeons can better observe and operate on organs inside the chest, such as the lungs, heart, and major blood vessels.

[0003] When the existing chest expansion device is used during surgery, it is necessary to place surgical retractors on both sides of the chest opening, then stretch the surgical retractors outward, and then fix the surgical retractors on the connecting frame through a snap-on connection.

[0004] Currently used chest expansion devices mostly use surgical retractors placed directly on both sides of the chest opening for external stretching. This method is easily affected by the patient's body position, chest shape and the direction of the surgical incision during operation, resulting in poor expansion effect and increasing the difficulty and risk of the operation.

[0005] Therefore, the present invention proposes an adjustable thoracic surgery chest expansion device to compensate for and improve the shortcomings of the prior art. Summary of the Invention

[0006] In view of the above problems, the present invention provides an adjustable thoracic surgery chest expansion device, which can effectively solve the problem of poor expansion effect caused by the stretching expansion method in the prior art. In order to achieve the above purpose, the embodiment of the present application provides the following technical solutions:

[0007] The present invention discloses an adjustable thoracic surgery chest expansion device, comprising a rectangular frame, an internal support mechanism for expanding the chest cavity provided inside the frame, an adjustment mechanism for changing the chest expansion angle provided inside the internal support mechanism, a limiting mechanism for preventing the internal support mechanism from resetting provided on the side of the frame, a stabilizing mechanism for preventing the internal support mechanism from shaking provided on the bottom of the frame, and a protective mechanism for preventing the internal support mechanism from detaching from the chest cavity provided on the bottom of the internal support mechanism;

[0008] The internal support mechanism includes a bidirectional screw rod that is symmetrically connected to the inside of the frame cavity for rotation. Each of the bidirectional screw rods is symmetrically threaded with a rectangular movable frame, and the movable frame is slidingly connected to the frame. A cross bar is rotatably connected between the two movable frames at the same end of the two bidirectional screw rods, and each cross bar is fixedly connected to the outside of a support rod for supporting the chest cavity.

[0009] Furthermore, the internal support mechanism also includes a transmission shaft rotatably connected to the inside of the frame cavity, the outside of the transmission shaft is fixedly connected to bevel gear 1, one end of each of the bidirectional screw rods is fixedly connected to bevel gear 2, and bevel gear 2 is meshed with bevel gear 1, one end of the transmission shaft extends to the outside of the frame, and the extended end of the transmission shaft is fixedly connected to the first handwheel.

[0010] Furthermore, the adjustment mechanism includes a shift rod fixedly connected to one end of the cross bar, a sliding groove is provided on the side of the shift rod, a mounting plate is fixedly connected to the top of the frame, and the mounting plate is vertically threaded with a screw.

[0011] Furthermore, the top of the screw is fixedly connected to a second hand wheel, the bottom of the screw is sleeved with a connecting rod, and the connecting rod is rotatably connected to the bottom of the screw, and both ends of the connecting rod are slidingly connected to two sliding grooves respectively.

[0012] Furthermore, the limiting mechanism includes a ratchet fixedly connected to the extended end of the transmission shaft, and a pawl is rotatably connected to the side of the frame, the pawl is engaged with the ratchet, and the end of the pawl away from the ratchet is fixedly connected to a paddle, and the side of the frame is also fixedly connected to an elastic sheet, and the elastic sheet is tightly fitted to the side of the pawl.

[0013] Furthermore, the stabilizing mechanism includes a sleeve fixedly connected to the bottom of the frame, a first sliding rod is slidably connected in the cavity at the bottom of the sleeve, a hinge seat is fixedly connected to the bottom of the first sliding rod, and a fitting plate that contacts the patient's skin is fixedly connected to the bottom of the hinge seat.

[0014] Furthermore, the stabilizing mechanism also includes an installation cavity opened at the top of the first sliding rod, and a card block is symmetrically and slidably connected inside the installation cavity, and a first spring is fixedly connected between the two card blocks. The outside of the sleeve also has a plurality of symmetrically and vertically opened limit holes for accommodating the card blocks.

[0015] Furthermore, the protective mechanism includes a accommodating cavity opened inside the support rod, a movable plate is slidably connected in the accommodating cavity, the bottom of the support rod is rotatably connected to a rotating plate, the bottom of the movable plate is rotatably connected to a connecting plate, and the connecting plate is rotatably connected to the rotating plate at one end away from the movable plate.

[0016] Furthermore, a roller is fixedly connected to the top of the movable plate, a mounting rod is fixedly connected between the movable frames, an arc-shaped plate is fixedly connected to the outside of the mounting rod, the arc-shaped plate is rollingly connected to the roller, a second spring is provided inside the accommodating cavity, one end of the second spring is fixedly connected to the side of the movable plate, and the other end of the second spring is fixedly connected to the protrusion inside the accommodating cavity.

[0017] Furthermore, the support mechanism includes a first clamp symmetrically attached to the side of the frame, each of the first clamps is symmetrically slidably connected to a U-shaped plate, a second clamp is fixedly connected between the two U-shaped plates, and the second clamp is also attached to the side of the frame, the first clamp is fixedly connected to an extension rod on the side away from the frame, and the extension rod is fixedly connected to an inverted U-shaped rod at one end away from the first clamp, and a second sliding rod is slidably connected to the cavity at the bottom of each U-shaped rod, and an installation cavity, a first spring, a block and a limit hole identical to those of the stabilization mechanism are provided between the second sliding rod and the U-shaped rod.

[0018] Beneficial effects:

[0019] 1. This device is equipped with an internal support mechanism, which uses support rods that are far away from each other to expand the chest cavity. The support rods evenly apply the expansion force to both sides, which can open the chest cavity more stably and avoid excessive traction or compression of local tissues caused by traditional external pulling methods. At the same time, traditional external pulling methods often require assistants to manually maintain the tension of the retractor, while the internal support mechanism can automatically maintain the expansion state, freeing up manpower and facilitating independent operation by the surgeon.

[0020] 2. This device is equipped with an adjustment mechanism. When the support rod supports the chest cavity, the inclination angle of the support rod can be changed. By adjusting the inclination angle of the support rod, the target area can be opened more accurately, avoiding the obstruction of the field of view caused by an inappropriate angle. In this way, it can adapt to the requirements of different thoracic surgical operations for the angle of exposure of the surgical field and avoid shaking caused by touching the support rod during surgery.

[0021] 3. This device is equipped with a stabilizing mechanism. When the chest cavity is expanded, the fitting plate is pressed against the patient's skin surface. After the fitting plate is pressed against the skin surface, it can provide additional friction and support points to prevent the expansion device from sliding, tilting or falling off during use, further improving the support stability of the support rod on the chest cavity.

[0022] 4. This device is equipped with a protective mechanism. When the support rod changes its tilt angle, it drives the rotating plate to rotate to form a curved arc at the bottom of the support rod. The curved bottom fits better with the chest structure, making it less likely to slide or deflect accidentally during surgery, thereby improving the stability of the expansion device.

[0023] 5. This device is provided with a support mechanism, which uses a second slide bar and an operating table for support, thereby avoiding the problem of frame shaking caused by the patient's chest rising and falling due to breathing, and further avoiding the problem of shaking of the expansion device during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention from the first viewing angle.

[0026] Figure 2 This is a three-dimensional structural diagram from a second viewing angle of the present invention.

[0027] Figure 3 For the present invention Figure 2 A magnified view of the structure at point A in the middle.

[0028] Figure 4 It is a three-dimensional structural diagram of the adjustment mechanism in the present invention.

[0029] Figure 5 It is a longitudinal sectional view of the protective mechanism in the present invention.

[0030] Figure 6 It is a cross-sectional view of the stabilizing mechanism in the present invention.

[0031] Figure 7 It is a front view of the limiting mechanism in the present invention.

[0032] Figure 8 It is a cross-sectional view of the support mechanism in the present invention.

[0033] The numbers in the figure represent: 10, frame; 20, internal support mechanism; 201, two-way screw; 202, moving frame; 203, crossbar; 204, support rod; 205, transmission shaft; 206, bevel gear 1; 207, bevel gear 2; 208, first handwheel; 30, adjustment mechanism; 301, lever; 302, slide; 303, connecting rod; 304, screw; 305, mounting plate; 306, second handwheel; 40, limiting mechanism; 401, ratchet; 402, pawl; 403, paddle; 404, elastic sheet; 50, stabilizing mechanism; 501 , sleeve; 502, first slide bar; 503, hinged seat; 504, fitting plate; 505, installation cavity; 506, first spring; 507, block; 508, limiting hole; 60, protection mechanism; 601, accommodating cavity; 602, moving plate; 603, roller; 604, arc-shaped plate; 605, installation rod; 606, connecting plate; 607, rotating plate; 608, second spring; 70, supporting mechanism; 701, first clamp; 702, second clamp; 703, U-shaped plate; 704, extension rod; 705, U-shaped rod; 706, second slide bar. DETAILED DESCRIPTION

[0034] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] The present invention will be further described below with reference to the embodiments.

[0036] See Figures 1 to 8 The present embodiment provides an adjustable thoracic surgical chest expansion device, comprising a rectangular frame 10, wherein an internal support mechanism 20 for expanding the chest cavity is provided inside the frame 10, an adjustment mechanism 30 for changing the chest expansion angle is also provided inside the internal support mechanism 20, a limiting mechanism 40 for preventing the internal support mechanism 20 from resetting is provided on the side of the frame 10, a stabilizing mechanism 50 for preventing the internal support mechanism 20 from shaking is provided at the bottom of the frame 10, and a protective mechanism 60 for preventing the internal support mechanism 20 from detaching from the chest cavity is provided at the bottom of the internal support mechanism 20.

[0037] The internal support mechanism 20 includes a bidirectional screw rod 201 that is symmetrically connected to the interior of the cavity of the frame 10 for rotation. Each bidirectional screw rod 201 is symmetrically threadedly connected to a rectangular movable frame 202, and the movable frame 202 is slidingly connected to the frame 10. A cross bar 203 is rotatably connected between the two movable frames 202 at the same end of the two bidirectional screw rods 201. Each cross bar 203 is fixedly connected to the outside of a support rod 204 for supporting the chest cavity. A through groove is opened on the side of the frame 10, and the internal protrusion of the movable frame 202 extends through the through groove to the interior of the cavity of the frame 10, and is threadedly connected to the protruding bidirectional screw rod 201 inside the movable frame 202.

[0038] The internal support mechanism 20 also includes a transmission shaft 205 rotatably connected to the interior of the cavity of the frame 10. The outside of the transmission shaft 205 is fixedly connected to a bevel gear 1 206. One end of each bidirectional screw rod 201 is fixedly connected to a bevel gear 2 207, and the bevel gear 207 is meshed with the bevel gear 1 206. One end of the transmission shaft 205 extends to the outside of the frame 10, and the extended end of the transmission shaft 205 is fixedly connected to a first handwheel 208.

[0039] When working specifically, when supporting the chest cavity, the support rod 204 is brought into contact with the wound in the chest cavity, and the transmission shaft 205 is driven to rotate by rotating the first hand wheel 208. The rotating transmission shaft 205 drives the bevel gear 207 to rotate through the bevel gear 1 206. The rotating bevel gear 207 drives the two bidirectional screw rods 201 to rotate at the same time. Each rotating bidirectional screw rod 201 drives the two moving frames 202 to move away from each other, so that the two bidirectional screw rods 201 simultaneously drive the two groups of moving frames 202 to move away from each other. When the two groups of moving frames 202 move away from each other, they drive the cross bars 203 to move away from each other synchronously. The cross bars 203 that move away from each other drive the support rods 204 to move away from each other synchronously. The support rods 204 that move away from each other support the patient's chest cavity, and the support rods 204 evenly apply the expansion force to both sides, which can more stably open the chest cavity and avoid excessive pulling or compression of local tissues caused by traditional external pulling methods. At the same time, the traditional external pulling method often requires an assistant to manually maintain the tension of the retractor, while the internal support mechanism can automatically maintain the expansion state, releasing manpower and facilitating independent operation by the surgeon.

[0040] The adjustment mechanism 30 includes a lever 301 fixedly connected to one end of the crossbar 203 , a sliding groove 302 is provided on the side of the lever 301 , a mounting plate 305 is fixedly connected to the top of the frame 10 , and a screw 304 is vertically threadedly connected to the mounting plate 305 .

[0041] The top of the screw rod 304 is fixedly connected to a second hand wheel 306 , the bottom of the screw rod 304 is sleeved with a connecting rod 303 , and the connecting rod 303 is rotationally connected to the bottom of the screw rod 304 , and both ends of the connecting rod 303 are slidingly connected to the two sliding grooves 302 respectively.

[0042] During specific operation, when the two cross bars 203 move away from each other, the two ends of the connecting rod 303 slide in the slide groove 302. When the inclination angle of the support rod 204 needs to be adjusted, the screw rod 304 is driven to rotate by turning the second hand wheel 306, so that the screw rod 304 moves toward the bottom of the mounting plate 305. When the screw 304 moves downward, it drives the lever 301 to rotate, and the rotating lever 301 mobilizes the cross bars 203 to rotate synchronously. The rotating cross bars 203 drives the support rod 204 to change the inclination angle. By adjusting the inclination angle of the support rod 204, the target area can be opened more accurately, avoiding the obstruction of the field of view caused by inappropriate angles, so as to adapt to the requirements of different thoracic surgical operations for the angle of exposure of the surgical field, and avoid shaking caused by touching the support rod 204 during surgery.

[0043] The limiting mechanism 40 includes a ratchet 401 fixedly connected to the extended end of the transmission shaft 205, and a pawl 402 is also rotatably connected to the side of the frame 10, the pawl 402 is engaged with the ratchet 401, and the end of the pawl 402 away from the ratchet 401 is fixedly connected to a paddle 403, and an elastic sheet 404 is also fixedly connected to the side of the frame 10, and the elastic sheet 404 is tightly fitted with the side of the pawl 402.

[0044] During specific operation, when the transmission shaft 205 rotates, the transmission shaft 205 drives the ratchet 401 to rotate synchronously. At the same time, the pawl 402 is engaged in the ratchet 401 under the elastic force of the elastic sheet 404, and the pawl 402 is used to block the reverse rotation of the ratchet 401, thereby preventing the transmission shaft 205 from rotating in the opposite direction, thereby preventing the support of the chest cavity by the strut 204 from shaking, and improving the support stability of the strut 204.

[0045] When it is necessary to release the support of the chest cavity by the strut 204, first press the paddle 403 to disengage the pawl 402 from the meshing state with the ratchet 401, then reversely rotate the first hand wheel 208 to rotate the transmission shaft 205, and the transmission shaft 205 drives the two bidirectional screw rods 201 to rotate at the same time, and each rotating bidirectional screw rod 201 drives the two moving frames 202 to approach each other, so that the two bidirectional screw rods 201 simultaneously drive the two groups of moving frames 202 to approach each other, and when the two groups of moving frames 202 approach each other, they drive the cross bar 203 to approach each other synchronously, and the cross bar 203 drives the struts 204 to approach each other synchronously, and the struts 204 that approach each other release their support for the patient's chest cavity.

[0046] The stabilizing mechanism 50 includes a sleeve 501 fixedly connected to the bottom of the frame 10, a first slide rod 502 is slidably connected in the cavity at the bottom of the sleeve 501, a hinge seat 503 is fixedly connected to the bottom of the first slide rod 502, and a fitting plate 504 that contacts the patient's skin is fixedly connected to the bottom of the hinge seat 503. Four groups of sleeves 501 are arranged, respectively located at the four corners of the bottom of the frame 10.

[0047] The stabilizing mechanism 50 also includes an installation cavity 505 opened at the top of the first slide rod 502, and a clamping block 507 is symmetrically slidably connected inside the installation cavity 505. A first spring 506 is fixedly connected between the two clamping blocks 507. The outside of the sleeve 501 also has a plurality of symmetrically vertically opened limiting holes 508 for accommodating the clamping blocks 507.

[0048] In specific operation, when using the expansion device, the four fitting plates 504 are pressed against the patient's skin surface. The fitting plates 504 can adjust the tilt angle through the hinge seat 503, so that the fitting plates 504 can be more stably fitted on the patient's skin surface, thereby improving the stability of the entire expansion device. When the height of the fitting plates 504 needs to be adjusted, the card block 507 is pressed at the same time so that the card block 507 is completely inserted into the installation cavity 505. Then, the first slide bar 502 can be pulled to move. When the first slide bar 502 moves After being in place, the block 507 is pushed out of the installation cavity 505 under the elastic force of the first spring 506, so that the block 507 enters the limiting hole 508, thereby fixing the position of the first slide bar 502 and the sleeve 501, preventing the first slide bar 502 from sliding and causing the expansion device to shake. After the fitting plate 504 contacts the skin surface, it can provide additional friction and support points to prevent the expansion device from sliding, tilting or falling off during use, further improving the support stability of the support rod 204 on the chest cavity.

[0049] The protective mechanism 60 includes a accommodating cavity 601 opened inside the support rod 204, a movable plate 602 is slidably connected in the accommodating cavity 601, a rotating plate 607 is rotatably connected to the bottom of the support rod 204, a connecting plate 606 is rotatably connected to the bottom of the movable plate 602, and the connecting plate 606 is rotatably connected to the rotating plate 607 at one end away from the movable plate 602.

[0050] The top of the moving plate 602 is fixedly connected to a roller 603 , the moving frame 202 is fixedly connected to a mounting rod 605 , the outside of the mounting rod 605 is fixedly connected to a curved plate 604 , and the curved plate 604 is rollingly connected to the roller 603 .

[0051] A second spring 608 is provided inside the accommodating cavity 601 . One end of the second spring 608 is fixedly connected to the side of the movable plate 602 , and the other end of the second spring 608 is fixedly connected to the protrusion inside the accommodating cavity 601 .

[0052] During specific operation, when the support rod 204 is tilted, the roller 603 rolls along the surface of the arc plate 604, so that the roller 603 is squeezed by the arc plate 604. After being squeezed, the roller 603 pushes the movable plate 602 to move toward the bottom of the accommodating cavity 601. At the same time, the movable plate 602 compresses and accumulates force on the second spring 608. When the movable plate 602 moves, the connecting plate 606 pushes the rotating plate 607 to rotate. After the rotating plate 607 rotates, an arc-shaped bend is formed at the bottom of the support rod 204. The arc-shaped bottom of the support rod 204 fits better with the chest structure, and is less likely to slide or deflect accidentally during surgery, thereby improving the stability of the expansion device.

[0053] When the support rod 204 returns to its original vertical angle from the inclined angle, the movable plate 602 is moved toward the top of the accommodating cavity 601 under the push of the elastic force of the second spring 608. The movable plate 602, driven by the connecting plate 606, causes the rotating plate 607 to rotate to an angle parallel to the support rod 204, thereby preventing the rotating plate 607 from scratching the chest cavity.

[0054] The supporting mechanism 70 includes a first clamp 701 symmetrically attached to the side of the frame 10, each first clamp 701 is symmetrically slidably connected to a U-shaped plate 703, a second clamp 702 is fixedly connected between the two U-shaped plates 703, and the second clamp 702 is also attached to the side of the frame 10, the first clamp 701 is fixedly connected to an extension rod 704 on the side away from the frame 10, and the extension rod 704 is fixedly connected to an inverted U-shaped rod 705 at one end away from the first clamp 701, and a second slide rod 706 is slidably connected in the bottom cavity of each U-shaped rod 705, and an installation cavity 505, a first spring 506, a block 507 and a limiting hole 508 identical to those of the stabilizing mechanism 50 are provided between the second slide rod 706 and the U-shaped rod 705.

[0055] When the second slide bar 706 is in place, the block 507 is pushed out of the installation cavity 505 under the elastic force of the first spring 506, so that the block 507 enters the limiting hole 508, thereby fixing the position of the second slide bar 706 and the U-shaped rod 705, further preventing the second slide bar 706 from sliding and causing the support device to shake. The first clamp 701 and the second clamp 702 are slidably connected to each other by the U-shaped plate 703. When the support mechanism 70 needs to be used, the entire support mechanism 70 is installed to the outside of the frame 10 through the first clamp 701 and the second clamp 702. The support mechanism 70 can be disassembled when not in use.

[0056] Working principle:

[0057] During use, the stabilizing mechanism 50 is first used to stabilize the entire expansion device on the patient's skin surface, and the supporting mechanism 70 is used to make the entire expansion device contact the operating table to further improve the stability of the entire expansion device. Then, the chest cavity is expanded by the internal support mechanism 20, and the limiting mechanism 40 is used to prevent the expansion mechanism 20 from moving. The inclination angle of the support rod 204 is then changed by the adjusting mechanism 30, so that the support rod 204 can support the chest cavity more stably. When the support rod 204 is tilted, the protective mechanism 60 is used to make the arc-shaped bottom of the support rod 204 fit better with the chest cavity structure, and it is not easy to accidentally slide or deflect during the operation, thereby improving the stability of the expansion device.

[0058] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An adjustable thoracic surgery chest expansion device, characterized in that: The invention comprises a rectangular frame (10), wherein an internal support mechanism (20) for expanding the chest cavity is provided inside the frame (10), an adjustment mechanism (30) for changing the expansion angle of the chest cavity is further provided inside the internal support mechanism (20), a limiting mechanism (40) for preventing the internal support mechanism (20) from resetting is provided on the side of the frame (10), a stabilizing mechanism (50) for preventing the internal support mechanism (20) from shaking is provided at the bottom of the frame (10), a protective mechanism (60) for preventing the internal support mechanism (20) from detaching from the chest cavity is provided at the bottom of the internal support mechanism (20), and support mechanisms (70) for further improving the stability of the internal support mechanism (20) are symmetrically provided at both ends of the frame (10); The internal support mechanism (20) includes a bidirectional screw rod (201) symmetrically connected to the interior of the cavity of the frame (10), each of the bidirectional screw rods (201) is symmetrically threadedly connected to a rectangular moving frame (202), and the moving frame (202) is slidably connected to the frame (10), a cross bar (203) is rotatably connected between the two moving frames (202) at the same end of the two bidirectional screw rods (201), and each of the cross bars (203) is fixedly connected to a support rod (204) for supporting the chest cavity.

2. The adjustable thoracic surgery chest expansion device according to claim 1, characterized in that: The inner support mechanism (20) further comprises a transmission shaft (205) rotatably connected to the interior of the cavity of the frame (10), the transmission shaft (205) being fixedly connected to a bevel gear 1 (206) on the outside, one end of each of the bidirectional screw rods (201) being fixedly connected to a bevel gear 2 (207), and the bevel gear 2 (207) being meshed with the bevel gear 1 (206), one end of the transmission shaft (205) extending to the outside of the frame (10), and the extended end of the transmission shaft (205) being fixedly connected to a first hand wheel (208).

3. The adjustable thoracic surgery chest expansion device according to claim 1, characterized in that: The adjusting mechanism (30) includes a lever (301) fixedly connected to one end of the crossbar (203), a sliding groove (302) being provided on a side of the lever (301), a mounting plate (305) being fixedly connected to the top of the frame (10), and a screw (304) being vertically threadedly connected to the mounting plate (305).

4. The adjustable thoracic surgery chest expansion device according to claim 3, characterized in that: The top of the screw rod (304) is fixedly connected to a second hand wheel (306), the bottom of the screw rod (304) is sleeved with a connecting rod (303), and the connecting rod (303) is rotatably connected to the bottom of the screw rod (304), and the two ends of the connecting rod (303) are respectively slidably connected to the two sliding grooves (302).

5. The adjustable thoracic surgery chest expansion device according to claim 1, characterized in that: The limiting mechanism (40) includes a ratchet (401) fixedly connected to the extended end of the transmission shaft (205); a pawl (402) is rotatably connected to the side of the frame (10); the pawl (402) is engaged with the ratchet (401); an end of the pawl (402) away from the ratchet (401) is fixedly connected to a paddle (403); an elastic sheet (404) is fixedly connected to the side of the frame (10), and the elastic sheet (404) is tightly fitted to the side of the pawl (402).

6. The adjustable thoracic surgery chest expansion device according to claim 1, characterized in that: The stabilizing mechanism (50) comprises a sleeve (501) fixedly connected to the bottom of the frame (10); a first sliding rod (502) is slidably connected in a cavity at the bottom of the sleeve (501); a hinge seat (503) is fixedly connected to the bottom of the first sliding rod (502); and a fitting plate (504) that contacts the patient's skin is fixedly connected to the bottom of the hinge seat (503).

7. The adjustable thoracic surgery chest expansion device according to claim 6, characterized in that: The stabilizing mechanism (50) further comprises an installation cavity (505) provided at the top of the first slide bar (502), a clamping block (507) being symmetrically slidably connected inside the installation cavity (505), a first spring (506) being fixedly connected between the two clamping blocks (507), and a plurality of limiting holes (508) for accommodating the clamping blocks (507) being symmetrically and vertically provided on the outside of the sleeve (501).

8. The adjustable thoracic surgery chest expansion device according to claim 1, characterized in that: The protective mechanism (60) comprises a housing cavity (601) provided inside the support rod (204), a movable plate (602) being slidably connected in the housing cavity (601), a rotating plate (607) being rotatably connected at the bottom of the support rod (204), a connecting plate (606) being rotatably connected at the bottom of the movable plate (602), and an end of the connecting plate (606) away from the movable plate (602) being rotatably connected to the rotating plate (607).

9. The adjustable thoracic surgery chest expansion device according to claim 8, characterized in that: The top of the movable plate (602) is fixedly connected to a roller (603), the movable frames (202) are fixedly connected to a mounting rod (605), the outside of the mounting rod (605) is fixedly connected to an arc-shaped plate (604), the arc-shaped plate (604) is rollingly connected to the roller (603), a second spring (608) is provided inside the accommodating cavity (601), one end of the second spring (608) is fixedly connected to the side of the movable plate (602), and the other end of the second spring (608) is fixedly connected to a protrusion inside the accommodating cavity (601).

10. The adjustable thoracic surgery chest expansion device according to claim 1, characterized in that: The support mechanism (70) includes a first clamp (701) symmetrically attached to the side of the frame (10), each of the first clamps (701) is symmetrically slidably connected to a U-shaped plate (703), a second clamp (702) is fixedly connected between the two U-shaped plates (703), and the second clamp (702) is also attached to the side of the frame (10), the first clamp (701) is fixedly connected to an extension rod (704) on the side away from the frame (10), the extension rod (704) is fixedly connected to an inverted U-shaped rod (705) on the end away from the first clamp (701), and a second slide rod (706) is slidably connected in the bottom cavity of each U-shaped rod (705), and an installation cavity (505), a first spring (506), a clamping block (507) and a limiting hole (508) identical to those of the stabilizing mechanism (50) are provided between the second slide rod (706) and the U-shaped rod (705).

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