Gypsum inner pourable coating structure for fracture surgery

Abstract

The invention discloses a coating structure capable of being poured into gypsum for fracture surgery, and belongs to the technical field of gypsum dressings, the coating structure comprises a coating frame, the coating frame is located in the gypsum, one side of the coating frame is connected with a closed ring, a plurality of coating adaptation mechanisms are arranged in an inner cavity of the coating frame at equal intervals along the axis, and each coating adaptation mechanism comprises a base plate. The multiple base plates are connected with one another, and one side of each base plate is connected with a sealing sleeve. According to the device, after the covering frame is arranged outside the fracture part in a penetrating and sleeving mode, the covering position is adjusted through the covering adaptation mechanism, the covering frame is covered with a gypsum material, composite assembling of gypsum and internal dressing can be completed, and traditional Chinese medicine perfusate can be injected into the covering frame through the perfusate mechanism and the injection switching mechanism; after gypsum is assembled, flushing and dressing fitting repairing can be conducted on the external skin of the fracture, the breathability and comfort of the coating position of a patient after gypsum fixing can be improved, and the use requirement is met.

Description

Technical Field

[0001] The invention belongs to the technical field of plaster dressings, and in particular relates to a perfusible coating structure in plaster for fracture surgery. Background Art

[0002] Gypsum is a mineral composed of calcium sulfate (CaSO4) hydrate. It is mainly used in medicine to make fixation devices, especially for external fixation of fracture patients. Gypsum has excellent sound insulation, heat insulation and fire resistance, and is low-priced and easy to operate. Therefore, it is widely used in the medical field. After plaster external fixation, the fracture site cannot be in contact with the outside world, and the skin of the fracture site in a closed state is not breathable, which causes discomfort to the patient.

[0003] The patent document with publication number CN111870419A discloses a 3D printed fracture rehabilitation bracket that replaces plaster, including a first clamping plate, a fastening piece, a second clamping plate and a connecting pipe; the first clamping plate is slidably connected to the second clamping plate and fixedly connected through multiple sets of fastening pieces; the inner end surface of the first clamping plate is provided with a first air bag, and the first clamping plate is provided with a first hollow warehouse; multiple sets of exhaust pipes, a first air pipe and a third air pipe are provided in the first hollow warehouse; the multiple sets of exhaust pipes are provided with multiple sets of first air vents on the inner end surface of the first clamping plate; the exhaust pipe and the first air pipe are both connected to the third air pipe; the air inlet end of the third air pipe is connected to the second air pipe for circulating and conveying hot and cold air; the inner end surface of the second clamping plate is provided with multiple sets of second air bags, and the second clamping plate is provided with a second hollow warehouse; the second hollow warehouse is provided with multiple second air vents on the inner end surface of the second clamping plate; the second hollow warehouse is connected to the first air pipe through a connecting pipe. This solution is convenient for fixing the patient's limbs after fracture, but the above device cannot be mixed with plaster, resulting in weak impact resistance, and after coating, the contact surface of the part cannot be infused with drugs. Therefore, there is room for improvement. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the contact surface of the part cannot be perfused with medicine after plaster coating, and to propose a plaster perfusion coating structure for fracture surgery.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A cast-in-plaster perfusable coating structure for fracture surgery, comprising a coating frame, the coating frame being located in the plaster, a closed ring being connected to one side of the coating frame, a plurality of coating adapting mechanisms being equidistantly arranged in the inner cavity of the coating frame along the axis, the coating adapting mechanisms comprising a pad, and the plurality of pads being connected to each other, a closed sleeve being connected to one side of the pad;

[0007] The inner cavity of the sealing sleeve is provided with a plurality of injection switching mechanisms around the axis, and one end of the injection switching mechanism close to the coating adapter mechanism is connected to a perfusion mechanism, and the perfusion mechanism is rotatably connected to one side of the pad. The inner side of the sealing sleeve is provided with a plurality of liquid inlet grooves corresponding to the injection switching mechanism, and the overflow of the perfusion liquid to the axis of the coating frame is controlled by the rotation of the injection switching mechanism in the sealing sleeve.

[0008] As a further description of the above technical solution:

[0009] The two ends of the pad are provided with stepped grooves on the sides away from each other, so that adjacent pads are hinged, and one side of the pad is rotatably connected to the connecting pipe through a bearing. The end of the pad is hinged with a hinge rod, and the hinge rod is rotatably connected to a slot frame outside. The slot frame has an inner cavity away from the hinge rod and is slidably connected to an end with a shaft sleeve, and a limit bolt is provided in the shaft sleeve, and the limit bolt is connected to one side of the closed ring.

[0010] As a further description of the above technical solution:

[0011] One side of the shaft sleeve is rotatably connected with an adjusting screw rod, the external thread of the adjusting screw rod is connected with a screw rod seat, the screw rod seat is embedded in one side of the inner cavity of the slot frame, and a handle is provided at the end of the adjusting screw rod.

[0012] As a further description of the above technical solution:

[0013] The perfusion mechanism includes a connecting ring, one side of the connecting ring is rotatably connected to a connecting pipe, one side of the connecting pipe is connected to one side of the injection switching mechanism, the outside of the connecting pipe is connected to a driven gear, and an external tooth chain is meshed between the outer sides of multiple driven gears, one side of the external tooth chain is connected to a connecting rod, one side of the connecting rod is fitted with a limiting arc block, the limiting arc block is connected to one side of the closed ring, the inner cavity of the limiting arc block is connected to multiple protrusions, and the rotation direction of the driven gear meshed with the external tooth chain is adjusted by the position of the connecting rod at the protrusion.

[0014] As a further description of the above technical solution:

[0015] One side of the connecting ring is connected with a three-way pipe, and one side of the three-way pipe is provided with a pumping valve.

[0016] As a further description of the above technical solution:

[0017] The injection switching mechanism comprises a liquid cavity tube, one end of which is connected to one side of the driven gear, an overflow port is provided on one side of the outer wall of the liquid cavity tube, and both sides of the outer wall of the hydraulic tube away from the overflow port are connected to external pads.

[0018] As a further description of the above technical solution:

[0019] The external application pad is an elastic water-isolating pad, and the size of the external application pad matches the size of the overflow port.

[0020] As a further description of the above technical solution:

[0021] A ventilation mechanism is embedded in one end of the inner cavity of the closed sleeve away from the closed ring, and the ventilation mechanism includes an arc-shaped guard plate, which is embedded in one side of the inner cavity of the closed sleeve, and one side of the arc-shaped guard plate is connected with a plurality of ventilation tubes along the axis of the covering frame, and the ventilation tubes are located between the injection switching mechanisms on both sides, and the inner side of the ventilation tubes is connected with a plurality of nozzles, and a connecting groove is opened at the position of the ventilation tube on the inner side of the closed sleeve corresponding to the position of the ventilation tube, and one side of the arc-shaped guard plate is connected with an injection port, and air is injected into the connecting groove for ventilation through the arc-shaped slide plate.

[0022] As a further description of the above technical solution:

[0023] An inner hoop ring is nested on the inner side of the covering frame away from the closed ring, and the outer peripheral side of the inner hoop ring is connected to the outer side of the protection frame through a support plate and a flexible ring is connected.

[0024] As a further description of the above technical solution:

[0025] A plurality of reinforcing ribs are arranged in an equidistant array along the axial direction on the outer peripheral side of the covering frame, and the cross-section shape of the reinforcing ribs is cylindrical.

[0026] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0027] 1. In the present invention, after the covering frame is put on the outside of the fracture site and the covering position is adjusted by the covering adaptor mechanism, the plaster material is covered on the outside of the covering frame to complete the composite assembly of the plaster and the internal dressing, which is conducive to injecting the Chinese medicine perfusion solution into the inside of the covering frame through the perfusion mechanism and the injection switching mechanism, and can be flushed with the external skin of the fracture and repaired by dressing after the plaster is assembled, which is conducive to improving the air permeability and comfort of the patient's covering position after plaster fixation, and meets the use needs.

[0028] 2. In the present invention, by designing a perfusion mechanism, liquid is injected into the connecting tube through the three-way pipe, and the injected liquid can enter the rear liquid cavity tube through the connecting tube. The connected liquid cavity tube can be injected into the outer skin of the fracture through the overflow port of the self-sealing sleeve inner immersion tank. Through the perfusion of traditional Chinese medicine, it is convenient to perform dressing treatment on the fracture site. After the perfusion liquid is adsorbed and extracted, the position on one side of the limiting arc block is adjusted by pulling the connecting rod, and the meshing driven gear is pulled by the rotation of the external tooth chain to drive the liquid cavity tube to rotate. The rotation of the liquid cavity tube can drive the overflow port to separate from the liquid inlet tank. At this time, the external pad outside the liquid cavity tube can fit with the skin position. Through the rotatable liquid cavity tube, the dry external pad fits with the skin after perfusion, thereby reducing the discomfort caused by the residual liquid medicine on the skin surface.

[0029] 3. In the present invention, through the designed ventilation mechanism, air can be injected through an air pump or a manually pressed airbag connected to the injection port, and the gas can be injected into the closed sleeve through the ventilation tube, and after the gas is injected, it can enter the inner side of the closed sleeve through the connecting groove. At this time, the gas in the closed sleeve can perform heat dissipation and air blowing treatment on the sleeve part after the liquid is injected, which is beneficial to improve the comfort of the internal body after the covering, and the surrounding arc-shaped protective plate can cooperate with the inner hoop and ensure the supporting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of a perfusible coating structure in plaster for fracture surgery proposed by the present invention;

[0031] Figure 2 The present invention proposes Figure 1 The structural diagram of the enlarged part A in the middle;

[0032] Figure 3 This is a schematic diagram of the lateral structure of a perfusible coating structure in plaster for fracture surgery proposed by the present invention;

[0033] Figure 4 This is a schematic diagram of the structure of a perfusible coating structure in plaster for fracture surgery from a rear view angle proposed by the present invention;

[0034] Figure 5 This is a schematic diagram of the disassembled structure of the ventilation mechanism of the perfusible coating structure in the plaster for fracture surgery proposed by the present invention;

[0035] Figure 6 This is a schematic diagram of a coating frame structure of a perfusible coating structure in plaster for fracture surgery proposed by the present invention;

[0036] Figure 7 This is a schematic diagram of the structure of the injection switching mechanism of the perfusable coating structure in the plaster for fracture surgery proposed by the present invention;

[0037] Figure 8 This is a schematic diagram of the split structure from another angle of the perfusible coating structure in plaster for fracture surgery proposed by the present invention;

[0038] Fig. 9 This is a schematic diagram of the transverse structure of a perfusible coating structure in plaster for fracture surgery proposed by the present invention;

[0039] Fig.10 The present invention proposes Fig. 9 Schematic diagram of the structure with the B part enlarged.

[0040] Legend:

[0041] 1. Coating frame; 2. Closing ring; 3. Injection mechanism; 301. Connecting ring; 302. Three-way pipe; 303. Driven gear; 304. Connecting pipe; 305. External tooth chain; 306. Connecting rod; 307. Limiting arc block; 4. Coating adapter mechanism; 401. Notch frame; 402. Limiting bolt; 403. Adjusting screw rod; 404. Articulated rod; 405. Pad; 5. Closing sleeve; 6. Injection switching mechanism; 601. Liquid cavity tube; 602. External pad; 603. Overflow port; 7. Ventilation mechanism; 701. Arc guard plate; 702. Ventilation pipe; 8. Inner hoop; 9. Reinforcement rib; 10. Liquid inlet tank; 11. Connecting tank. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 creative work are within the scope of protection of the present invention.

[0043] See also Figure 1-Figure 10 The present invention provides a technical solution: a cast-in-plaster perfusible coating structure for fracture surgery, comprising a coating frame 1, the coating frame 1 is located in the plaster, a closed ring 2 is connected to one side of the coating frame 1, a plurality of coating adapting mechanisms 4 are equidistantly arranged along the axis of the inner cavity of the coating frame 1, the coating adapting mechanism 4 comprises a pad 405, and the plurality of pads 405 are connected to each other, and a closed sleeve 5 is connected to one side of the pad 405;

[0044] The inner cavity of the sealing sleeve 5 is provided with a plurality of injection switching mechanisms 6 around the axis, and one end of the injection switching mechanism 6 close to the covering adapter mechanism 4 is connected with the perfusion mechanism 3, and the perfusion mechanism 3 is rotatably connected to one side of the pad 405. The inner side of the sealing sleeve 5 is provided with a plurality of liquid inlet grooves 10 corresponding to the injection switching mechanism 6, and the overflow of the perfusion liquid to the axis of the covering frame 1 is controlled by the rotation of the injection switching mechanism 6 in the sealing sleeve 5. Step grooves are provided on the sides away from the two ends of the pad 405, so that the adjacent pads 405 are hinged, and one side of the pad 405 is rotatably connected to the connecting pipe 304 through a bearing, and the end of the pad 405 is hinged with a hinge rod 404, and the hinge rod 4 04 is rotatably connected to a slot frame 401 on the outside, and an axle sleeve is slidably connected to one end of the inner cavity of the slot frame 401 away from the hinge rod 404, and a limit bolt 402 is provided in the axle sleeve, and the limit bolt 402 is connected to one side of the closed ring 2, and an adjusting screw rod 403 is rotatably connected to one side of the axle sleeve, and the adjusting screw rod 403 is externally threadedly connected to a screw rod seat, and the screw rod seat is embedded in one side of the inner cavity of the slot frame 401, and a handle is provided at the end of the adjusting screw rod 403. A plurality of reinforcing ribs 9 are arranged in an equidistant array along the axial direction on the outer peripheral side of the covering frame 1, and the cross-sectional shape of the reinforcing ribs 9 is cylindrical. The designed reinforcing ribs 9 can improve the fitting effect on the external plaster and improve the supporting effect of the plaster and the covering frame 1.

[0045] Specifically: when fixing a fracture, the covering frame 1 can be put on the outside of the fracture site. In another embodiment, the covering frame 1 can be a mutually nested arc-shaped portion closed on both sides. After adjusting the covering position through the covering adaptor 4, the plaster material is covered on the outside of the covering frame 1 to complete the composite assembly of the plaster and the internal dressing, which is conducive to injecting the Chinese medicine perfusion liquid into the covering frame 1 through the perfusion mechanism 3 and the injection switching mechanism 6. After the plaster is assembled, it can be flushed with the external skin of the fracture and repaired with the dressing, which is conducive to improving the air permeability and comfort of the patient's covering position after plaster fixation, and meeting the use needs;

[0046] In addition, through the designed covering adaptation mechanism 4, the adjusting screw 403 can be moved in the screw seat, and the rotation of the adjusting screw 403 can drive the screw seat and the inner sleeve of the slot frame 401 to slide. At this time, the slot frame 401 can pull the end hinged pad 405 to rotate axially around the hinged position at the other end. At this time, the pad 405 and the inner injection switching mechanism 6 can be fully adjusted to fully fit the skin outside the fracture, which is conducive to adapting to the covering fit in different situations of the fracture position and facilitating subsequent plaster fixation.

[0047] See also Figure 1-Figure 3The perfusion mechanism 3 includes a connecting ring 301, one side of the connecting ring 301 is rotatably connected to a connecting pipe 304, one side of the connecting pipe 304 is connected to one side of the injection switching mechanism 6, the outside of the connecting pipe 304 is connected to a driven gear 303, and an external tooth chain 305 is meshed between the outer sides of multiple driven gears 303, one side of the external tooth chain 305 is connected to a connecting rod 306, one side of the connecting rod 306 is fitted with a limited arc block 307, the limited arc block 307 is connected to one side of the closed ring 2, and the inner cavity of the limited arc block 307 is connected to a plurality of protrusions, which are connected to the protrusions through the connecting rod 306. The position of the external tooth chain 305 adjusts the rotation direction of the driven gear 303 that is meshed with the external tooth chain 305. One side of the connecting ring 301 is connected to a three-way pipe 302, and one side of the three-way pipe 302 is provided with a pumping valve. The injection switching mechanism 6 includes a liquid cavity tube 601. One end of the liquid cavity tube 601 is connected to one side of the driven gear 303. An overflow port 603 is provided on one side of the outer wall of the liquid cavity tube 601, and both sides of the outer wall of the hydraulic tube away from the overflow port 603 are connected with external pads 602. The external pads 602 are elastic water-proof pads, and the size of the external pads 602 matches the size of the overflow port 603.

[0048] Specifically: by designing the perfusion mechanism 3, when liquid injection repair is needed, liquid can be injected into the connecting tube 304 through the three-way pipe 302, and the injected liquid can enter the rear liquid cavity tube 601 through the connecting tube 304. At this time, the connected liquid cavity tube 601 can be injected into the outer skin of the fracture through the overflow port 603 from the immersion tank inside the closed sleeve 5. Through the perfusion of traditional Chinese medicine, it is convenient to perform dressing treatment on the fracture site, and the medicine can be sucked out of the perfusion liquid through the reverse suction on the other side of the three-way pipe 302 after sufficient perfusion, and the perfusion liquid can be sucked out by the reverse suction on the other side of the three-way pipe 302, and the perfusion liquid can be sucked in by the reverse suction on the other side of the three-way pipe 302. After adsorption and extraction, the position on one side of the limiting arc block 307 can be adjusted by pulling the connecting rod 306, and the meshing driven gear 303 can be pulled by rotating the external tooth chain 305 to drive the liquid cavity tube 601 to rotate. The rotation of the liquid cavity tube 601 can drive the overflow port 603 to separate from the liquid inlet tank 10. At this time, the external pad 602 outside the liquid cavity tube 601 can fit the skin position. Through the rotatable liquid cavity tube 601, the dry external pad 602 can fit the skin after perfusion, thereby reducing the discomfort caused by the residual liquid on the skin surface;

[0049] Among them, the external tooth chain 305 is flexibly sleeved on the surfaces of multiple driven gears 303. When the pad 405 is offset around the hinge position, the external tooth chain 305 can ensure the transmission effect by engaging with the driven gear 303, and in order to ensure the driving torque, the closed sleeve 5 can be adjusted to reset so that the driven gear 303 can open the external tooth chain 305 for rotation adjustment to ensure the engagement effect with the liquid cavity tube 601, and after adjustment, the limit position can be adjusted by moving the connecting rod 306 in the limit arc block 307.

[0050] See also Figure 5A ventilation mechanism 7 is embedded in one end of the inner cavity of the closing sleeve 5 away from the closing ring 2, and the ventilation mechanism 7 includes an arc-shaped guard plate 701, which is embedded in one side of the inner cavity of the closing sleeve 5, and one side of the arc-shaped guard plate 701 is connected with multiple ventilation tubes 702 along the axis of the covering frame 1, and the ventilation tubes 702 are located between the injection switching mechanisms 6 on both sides, and the inner side of the ventilation tubes 702 is connected with multiple nozzles, and a connecting groove 11 is opened at the position of the ventilation tube 702 on the inner side of the closing sleeve 5, and a gas injection port is connected on one side of the arc-shaped guard plate 701, and gas is injected into the connecting groove 11 for ventilation through the arc-shaped slide plate, and an inner hoop ring 8 is nested on the inner side of the covering frame 1 away from the closing ring 2, and the outer peripheral side of the inner hoop ring 8 is connected to the outer side of the protection frame through a support plate and a flexible ring is connected.

[0051] Specifically: through the designed ventilation mechanism 7, air can be injected through an air pump or a manually pressed airbag connected to the injection port, and the gas can be injected into the closed sleeve 5 through the ventilation tube 702, and after the injection, it can enter the inner side of the closed sleeve 5 through the connecting groove 11. At this time, the gas in the closed sleeve 5 can perform heat dissipation and air blowing treatment on the sleeved part after the injection, which is beneficial to improve the comfort of the internal body after the covering, and the surrounding arc-shaped protective plate 701 can cooperate with the inner hoop 8 and ensure the supporting effect.

[0052] Working principle: When in use, after the covering frame 1 is put on the outside of the fracture site, the covering position is adjusted by the covering adapter mechanism 4, and the adjusting screw 403 is moved in the screw seat by twisting. The adjusting screw 403 rotates to drive the screw seat and the inner sleeve of the slot frame 401 to slide outside. At this time, the slot frame 401 pulls the end hinged pad 405 to rotate axially around the hinged position at the other end, and fully adjusts the fitting angle of the pad 405 and the inner injection switching mechanism 6 with the skin outside the fracture to achieve a full fitting effect. By covering the plaster material on the outside of the covering frame 1, the composite assembly of the plaster and the internal dressing is completed;

[0053] The Chinese medicine perfusion liquid is injected into the coating frame 1 through the perfusion mechanism 3 and the injection switching mechanism 6, and the liquid is injected into the connecting tube 304 through the three-way pipe 302. The injection liquid enters the rear liquid cavity tube 601 through the connecting tube 304. At this time, the connected liquid cavity tube 601 is injected into the outer skin of the fracture through the overflow port 603 from the inner immersion tank of the closed sleeve 5. The perfusion of the Chinese medicine agent facilitates the dressing treatment of the fracture position. After the agent is fully perfused, the perfusion liquid is sucked out by reverse suction on the other side of the three-way pipe 302. After the perfusion liquid is adsorbed and extracted, the position on one side of the limiting arc block 307 is adjusted by pulling the connecting rod 306, and the meshing driven gear 303 is pulled by the external tooth chain 305 to drive the liquid cavity tube 601 to rotate. The rotation of the liquid cavity tube 601 drives the overflow port 603 to separate from the liquid inlet tank 10. At this time, the external pad 602 outside the liquid cavity tube 601 is fitted with the skin position;

[0054] Gas is injected through an air pump or a manually pressed airbag connected to the gas injection port, and the gas is injected into the closed sleeve 5 through the air vent tube 702. After the gas is injected, it enters the inner side of the closed sleeve 5 through the connecting groove 11. At this time, the gas in the closed sleeve 5 performs heat dissipation and air blowing treatment on the sleeved part after the injection. In the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; the term "multiple" refers to two or more, unless otherwise clearly defined. Terms such as "install", "connect", "connect", and "fix" should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cast-in-plaster perfusible coating structure for fracture surgery, comprising a coating frame (1), wherein the coating frame (1) is located in the plaster, and a closed ring (2) is connected to one side of the coating frame (1), characterized in that: The inner cavity of the covering frame (1) is provided with a plurality of covering adapting mechanisms (4) equidistantly along the axis, the covering adapting mechanisms (4) comprising a pad (405), and the plurality of pads (405) are connected to each other, and a sealing sleeve (5) is connected to one side of the pad (405); The inner cavity of the sealing sleeve (5) is provided with a plurality of liquid injection switching mechanisms (6) around the axis, and one end of the liquid injection switching mechanism (6) close to the covering adapter mechanism (4) is connected to the perfusion mechanism (3), and the perfusion mechanism (3) is rotatably connected to one side of the pad (405). The inner side of the sealing sleeve (5) is provided with a plurality of liquid inlet grooves (10) corresponding to the liquid injection switching mechanisms (6), and the connection and closure of the perfusion liquid to the axis of the covering frame (1) are controlled by the rotation of the liquid injection switching mechanism (6) in the sealing sleeve (5).

2. The plaster-infused coating structure for fracture surgery according to claim 1, characterized in that: The two ends of the pad (405) are provided with stepped grooves on the sides away from each other, so that adjacent pads (405) are hinged, and one side of the pad (405) is rotatably connected to the connecting pipe (304) through a bearing. The end of the pad (405) is hinged with a hinge rod (404), and the hinge rod (404) is rotatably connected to a notch frame (401). The end of the inner cavity of the notch frame (401) away from the hinge rod (404) is slidably connected to a shaft sleeve, and a limit bolt (402) is provided in the shaft sleeve, and the limit bolt (402) is connected to one side of the closed ring (2).

3. The plaster-infused coating structure for fracture surgery according to claim 1, characterized in that: One side of the shaft sleeve is rotatably connected to an adjusting screw rod (403), the adjusting screw rod (403) is externally threadedly connected to a screw rod seat, the screw rod seat is embedded in one side of the inner cavity of the slot frame (401), and a handle is provided at the end of the adjusting screw rod (403).

4. The plaster-infused coating structure for fracture surgery according to claim 1, characterized in that: The injection mechanism (3) comprises a connecting ring (301), one side of the connecting ring (301) is rotatably connected to a connecting pipe (304), one side of the connecting pipe (304) is connected to one side of the injection switching mechanism (6), the outside of the connecting pipe (304) is connected to a driven gear (303), and an external tooth chain (305) is meshed between the outer sides of a plurality of driven gears (303), one side of the external tooth chain (305) is connected to a connecting rod (306), one side of the connecting rod (306) is fitted with a limit arc block (307), the limit arc block (307) is connected to one side of the closed ring (2), the inner cavity of the limit arc block (307) is connected to a plurality of protrusions, and the rotation direction of the driven gear (303) meshed with the external tooth chain (305) is adjusted at the position of the protrusions by the connecting rod (306).

5. The plaster-infused coating structure for fracture surgery according to claim 4, characterized in that: One side of the communication ring (301) is connected to a three-way pipe (302), and one side of the three-way pipe (302) is provided with a pumping valve.

6. The plaster-infused coating structure for fracture surgery according to claim 1, characterized in that: The injection switching mechanism (6) comprises a liquid cavity tube (601), one end of which is connected to one side of the driven gear (303), an overflow port (603) is provided on one side of the outer wall of the liquid cavity tube (601), and external application pads (602) are connected to both sides of the outer wall of the hydraulic tube away from the overflow port (603).

7. The plaster-infused coating structure for fracture surgery according to claim 6, characterized in that: The external application pad (602) is an elastic water-proof pad, and the size of the external application pad (602) matches the size of the overflow port (603).

8. The plaster-infused coating structure for fracture surgery according to claim 1, characterized in that: A ventilation mechanism (7) is embedded in one end of the inner cavity of the sealing sleeve (5) away from the sealing ring (2), and the ventilation mechanism (7) comprises an arc-shaped protective plate (701), which is embedded in one side of the inner cavity of the sealing sleeve (5), and one side of the arc-shaped protective plate (701) is connected with a plurality of ventilation tubes (702) around the axis of the covering frame (1), and the ventilation tube (702) is located between the injection switching mechanisms (6) on both sides, and the inner side of the ventilation tube (702) is connected with a plurality of nozzles, and a connecting groove (11) is opened at a position corresponding to the ventilation tube (702) on the inner side of the sealing sleeve (5), and one side of the arc-shaped protective plate (701) is connected with an air injection port, and air is injected into the connecting groove (11) for ventilation through the arc-shaped slide plate.

9. The plaster-infused coating structure for fracture surgery according to claim 1, characterized in that: An inner hoop ring (8) is nested on the inner side of the covering frame (1) away from the closed ring (2), and the outer peripheral side of the inner hoop ring (8) is connected to the outer side of the protection frame through a support plate and a flexible ring.

10. The plaster-infused coating structure for fracture surgery according to claim 1, characterized in that: The outer peripheral side of the covering frame (1) is provided with a plurality of reinforcing ribs (9) in an equidistant array along the axial direction, and the cross-sectional shape of the reinforcing ribs (9) is cylindrical.

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