Leg joint fixing device for nursing

Abstract

The application relates to the technical field of medical devices, and discloses a leg joint fixing device for nursing, which comprises four universal movable linking structures, four negative pressure type telescopic structures and two elastic pressure control structures. The leg joint fixing device for nursing uses the suction force of air negative pressure as the power source of clamping and has certain buffering function, so that the secondary injury phenomenon caused by fixed installation can be prevented, and once the clamping force is too large, the device can timely compensate the outside air into the negative pressure interval, so that the clamping force of the clamping plate on the patient's limbs can be timely reduced, and the safety protection capability of the limbs can be improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a leg joint fixation device for nursing care. Background Technology

[0002] Postoperative medical devices for fractures are placed outside the body to restrict the movement of limbs, prevent secondary injury to the patient, and thus assist in surgical treatment.

[0003] For example, Chinese patent publication number "CN213525756U" discloses "A medical device for postoperative treatment of pediatric fractures," whose main structure includes a brace body, a wrapping cloth, and a sponge pad. Adjustment structures are provided at both ends of the brace body. The wrapping cloth is fixedly connected to the top of the brace body, and a binding structure is provided at the top of the wrapping cloth. A sponge pad is fixedly connected inside the brace body, and a breathable structure is provided at the bottom of the brace body. This medical device for postoperative treatment of pediatric fractures, through the use of threaded posts and fixing nuts, allows a metal strip to be fixed to the outer wall of the brace body. The fixing holes are evenly distributed on the metal strip, allowing for size adjustment based on the connection between the fixing holes and the threaded posts. This facilitates adaptation to children of different ages, greatly improving applicability and giving the medical device for postoperative treatment of pediatric fractures an adjustable function.

[0004] A closer look at the aforementioned medical instruments used after pediatric fracture surgery reveals that, during operation, the binding structure facilitates adjustment of the binding intensity. The design of the straps and connecting rings allows for greater flexibility in securing the limb after swelling subsides following surgery, as the gap between the limb and the brace widens. This flexibility allows for adjustment of the binding force by pulling or pulling the straps, resulting in a better fit and thus facilitating fixation.

[0005] However, the binding structure of the aforementioned medical devices for pediatric fracture surgery consists of a connecting block, a strap, Velcro fibers, Velcro barbs, and a connecting ring. The Velcro barbs adhere to the Velcro fibers, thus fixing the limb. However, the method of using Velcro barbs to adhere to the Velcro fibers can loosen over time. Therefore, it is easy to cause insufficient clamping force or to forcibly tighten the connecting ring to provide sufficient clamping force, resulting in a relatively high degree of safety hazard. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a leg joint fixation device for nursing care. It uses the suction force of negative air pressure as the clamping power source and has a certain buffering function to prevent secondary damage caused by fixation. At the same time, if the clamping force is too great, the device can promptly allow external air to enter the negative pressure range to compensate, thereby reducing the clamping force of the splint on the patient's limb and improving the safety protection of the limb, thus solving the above-mentioned technical problems.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a leg joint fixation device for nursing care, comprising a front splint, a rear splint, four rope holes disposed in the two rear flat ends b of the rear splint, and two three-way air pipes, and further comprising four universal movable connecting structures fixedly installed on the surfaces of the two front flat ends a of the front splint and corresponding to the four rope holes, wherein the front splint contains a fixedly installed hemispherical shell and an inner rotating sphere installed inside the hemispherical shell and capable of freely rotating inside the hemispherical shell; and four negative pressure telescopic structures fixedly installed on the surfaces of the two rear flat ends b of the rear splint. It contains a fixedly installed horizontal hollow rod, a main piston body placed inside the horizontal hollow rod that can move away from the front clamping plate under the action of negative air pressure, a rope hole, a pull rope fixedly connected to the inner rotating ball and moving laterally with the main piston body; and two elastic pressure control structures, fixedly installed between two negative pressure telescopic structures on the same side. Each structure contains a fixedly installed horizontal hollow column, a secondary piston body that can move laterally along the interior of the horizontal hollow column, and a secondary helical spring that prevents the secondary piston body from moving laterally due to the negative air pressure in the negative pressure telescopic structure.

[0008] Preferably, the universal movable link structure includes a hemispherical shell, and a first fixing plate is provided on one side of the hemispherical shell, which is integral with the hemispherical shell and fixedly installed on the two front plane ends a surfaces of the front clamping plate. The interior of the hemispherical shell is provided with a hemispherical cavity, and an inner rotating sphere is placed inside the hemispherical cavity. The side of the inner rotating sphere is provided with a concave rope fixing groove.

[0009] Preferably, the structural radius of the hemispherical cavity matches the structural radius of the inner rotating sphere.

[0010] Preferably, the depth of the hemispherical cavity is greater than the structural radius of the inner rotating sphere, and the structural diameter of the hemispherical cavity at the opening is smaller than the structural diameter of the inner rotating sphere.

[0011] Preferably, the negative pressure telescopic structure includes a transverse hollow rod. One end of the transverse hollow rod is provided with a second fixing plate, which is integral with the transverse hollow rod and fixedly installed on the two rear flat surfaces b of the rear clamping plate. The transverse hollow rod has a main transverse movable cavity inside. The other end of the transverse hollow rod is provided with a pipe structure. The pipe structure has a first gas flow hole communicating with the main transverse movable cavity inside. The side of the pipe structure has a second gas flow hole. A main piston body that can move laterally along the main transverse movable cavity is placed inside the transverse hollow rod. A main helical spring is placed in the area between the main piston body and the first gas flow hole in the main transverse movable cavity. A pull rope that passes through the end face of the transverse hollow rod and the rope hole is embedded in one end face of the main piston body.

[0012] Preferably, the initial length of the main helical spring is greater than the lateral length of the main transverse movable cavity.

[0013] Preferably, the two pipe structures located at the same height are connected by a three-way air pipe.

[0014] Preferably, the elastic pressure control structure includes a longitudinal hollow tube, with an integrally formed ring at each end of the longitudinal hollow tube. The ring has a centrally located annular hole fixed to the periphery of the pipe structure. Two second gas flow holes on the same side are connected by a third gas flow hole within the longitudinal hollow tube. A transverse hollow column is installed in the middle of the longitudinal hollow tube via a transverse gas flow channel. The transverse hollow column has a secondary transverse movable cavity connected to one end of the transverse gas flow channel. One end of the transverse hollow column has a gas compensation hole connected to the external space. A secondary piston body, movable transversely along the secondary transverse movable cavity, is located inside the transverse hollow column. A secondary helical spring in a compressed state is placed between the secondary piston body and the transverse gas flow channel in the secondary transverse movable cavity. A raised sealing gasket is embedded in the end face of the secondary piston body facing the gas compensation hole. A gas flow groove for gas flow is provided on the circumferential side of the secondary piston body.

[0015] Preferably, the distance between the centerline of the gas flow groove and the auxiliary piston body is greater than the structural radius of the sealing gasket, and the structural radius of the sealing gasket is greater than the structural radius of the gas compensation hole.

[0016] Preferably, the resistance strength of the secondary helical spring to the secondary piston body in the initial state is sufficient to ensure that the front and rear clamps provide stable clamping for the patient's limbs.

[0017] Compared with the prior art, the present invention provides a leg joint fixation device for nursing care, which has the following beneficial effects: This nursing leg joint fixation device uses the suction of negative air pressure as the clamping power source, and has a certain buffering function to prevent secondary damage caused by fixation installation. At the same time, if the clamping force is too large, the device can promptly allow outside air to enter the negative pressure range to reduce the clamping force of the splint on the patient's limb, thereby improving the safety protection of the limb. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention; Figure 2 This is a top view of the present invention; Figure 3 This is a perspective view of the universal movable link structure in this invention; Figure 4 This is a three-dimensional cross-sectional view of the universal movable link structure in this invention; Figure 5 This is a perspective view of the negative pressure telescopic structure in this invention; Figure 6 This is a three-dimensional cross-sectional view of the negative pressure telescopic structure in this invention; Figure 7 This is a perspective view of the elastic pressure control structure in this invention; Figure 8 This is a three-dimensional cross-sectional view of the elastic pressure control structure in this invention.

[0019] The components include: 1. Front clamping plate; 2. Rear clamping plate; 3. Universal movable link structure; 31. Hemispherical shell; 32. First fixing plate; 33. Hemispherical cavity; 34. Inner rotating sphere; 35. Concave rope fixing groove; 4. Negative pressure telescopic structure; 41. Transverse hollow rod; 42. Second fixing plate; 43. Main transverse movable cavity; 44. Pipe body structure; 45. First gas flow hole; 46. Second gas flow hole; 47. Main piston body; 48. Main helical spring; 49. Pull rope; 5. Elastic pressure control structure; 51. Longitudinal hollow tube; 52. Ring sleeve; 53. Ring hole; 54. Third gas flow hole; 55. Transverse gas flow channel; 56. Transverse hollow column; 57. Gas compensation hole; 58. Secondary piston body; 59. Gas flow groove; 510. Sealing gasket; 511. Secondary helical spring; 512. Secondary transverse movable cavity; 6. Three-way gas pipe. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figure 1 and Figure 2 A leg joint fixation device for nursing care includes a front splint 1, a rear splint 2, four rope holes located in the two rear flat ends b of the rear splint 2, and two three-way air pipes 6. It also includes four universal movable connecting structures 3, fixedly installed on the surfaces of the two front flat ends a of the front splint 1 and corresponding to the four rope holes. Each structure contains a fixedly installed hemispherical shell 31 and an inner rotating sphere 34 installed inside the hemispherical shell 31 and capable of free rotation within it. Four negative pressure telescopic structures 4 are fixedly installed on the surfaces of the two rear flat ends b of the rear splint 2, and each structure contains a fixedly installed horizontal... The structure includes a hollow rod 41, a main piston 47 placed inside the horizontal hollow rod 41 and capable of moving away from the front clamping plate 1 under the action of negative air pressure, a pull rope 49 that passes through a rope hole, is fixedly connected to the inner rotating ball 34 and moves laterally with the main piston 47, and two elastic pressure control structures 5, which are fixedly installed between two negative pressure telescopic structures 4 located on the same side. Inside the structure are a fixedly installed horizontal hollow column 56, a secondary piston 58 that can move laterally along the interior of the horizontal hollow column 56, and a secondary helical spring 511 that prevents the secondary piston 58 from moving laterally due to the negative air pressure in the negative pressure telescopic structure 4.

[0022] The above technical solution uses the suction force of negative air pressure as the clamping power source, which has a certain buffering function to prevent secondary damage caused by fixed installation. At the same time, if the clamping force is too large, the device can promptly allow external air to enter the negative pressure range to reduce the clamping force of the splint on the patient's limb, thereby improving the safety protection of the limb.

[0023] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 The universal movable link structure 3 includes a hemispherical shell 31. A first fixing plate 32, which is integral with the hemispherical shell 31 and fixedly installed on the two front plane ends a of the front clamping plate 1, is provided on one side of the hemispherical shell 31. A hemispherical cavity 33 is provided inside the hemispherical shell 31. An inner rotating sphere 34 is placed inside the hemispherical cavity 33. A concave rope fixing groove 35 is provided on the side of the inner rotating sphere 34. The structural radius of the hemispherical cavity 33 matches the structural radius of the inner rotating sphere 34. The depth of the hemispherical cavity 33 is greater than the structural radius of the inner rotating sphere 34. The structural diameter of the hemispherical cavity 33 at the opening is smaller than the structural diameter of the inner rotating sphere 34.

[0024] The function of the omnidirectional movable link structure 3 is to form an adaptive angle adjustment function with the taut pull rope 49, thereby making the front clamp 1 and the rear clamp 2 more stable when fixed. At the same time, it enables the force of the pull rope 49 at the connection point to be along the rope body of the pull rope 49, thereby reducing the negative impact on the pull rope 49.

[0025] Please see Figure 1 , Figure 2 , Figure 5 and Figure 6 The negative pressure telescopic structure 4 includes a transverse hollow rod 41. One end of the transverse hollow rod 41 is provided with a second fixing plate 42, which is integral with the transverse hollow rod 41 and fixedly installed on the two rear flat surfaces b of the rear clamping plate 2. The interior of the transverse hollow rod 41 is provided with a main transverse movable cavity 43. The other end of the transverse hollow rod 41 is provided with a pipe structure 44. The interior of the pipe structure 44 is provided with a first gas flow hole 45 communicating with the main transverse movable cavity 43. The side of the pipe structure 44 is provided with a second gas flow hole 46. A main piston body 47, which can move laterally along the main transverse movable cavity 43, is placed inside the hollow rod 41. A main helical spring 48 is placed in the area between the main piston body 47 and the first gas flow hole 45 in the main transverse movable cavity 43. A pull rope 49, which passes through the end face of the transverse hollow rod 41 and the rope hole, is embedded in one end face of the main piston body 47. The initial length of the main helical spring 48 is greater than the transverse length of the main transverse movable cavity 43. The two pipe structures 44 located at the same height are connected by a three-way air pipe 6.

[0026] The main function of the negative pressure telescopic structure 4 is to evacuate the three-way air tube 6 through the air extraction structure. At this time, the main spiral spring 48 will be compressed and the main piston body 47 will move in a directional manner, so that the pull rope 49 will continuously contract and enter the main transverse moving cavity 43. The distance between the front clamp 1 and the rear clamp 2 will be reduced, so that the front clamp 1 and the rear clamp 2 can fix the patient's limb. Of course, the clamping force can be controlled by controlling the intensity of the negative pressure.

[0027] Please see Figure 1 , Figure 2 , Figure 7 and Figure 8The elastic pressure control structure 5 includes a longitudinal hollow tube 51. Each end of the longitudinal hollow tube 51 is provided with an integrally formed ring 52. The center of each ring 52 has an annular hole 53 fixedly placed around the periphery of the pipe body structure 44. Two second gas flow holes 46 located on the same side are connected by a third gas flow hole 54 located in the longitudinal hollow tube 51. A transverse hollow column 56 is installed in the middle of the longitudinal hollow tube 51 through a transverse gas flow channel 55. The interior of the transverse hollow column 56 is provided with a secondary transverse movable cavity 512 connected to one end of the transverse gas flow channel 55. One end of the transverse hollow column 56 is provided with a gas compensation hole 57 connected to the external space. The transverse hollow column 56 has a spacer that can move along the transverse gas flow channel 512 inside the secondary transverse movable cavity 512. A secondary piston body 58 moves laterally within a secondary lateral movable cavity 512. A secondary helical spring 511 in a compressed state is placed between the secondary piston body 58 and the lateral gas flow channel 55 in the secondary lateral movable cavity 512. A sealing gasket 510 in a protruding state is embedded in the end face of the secondary piston body 58 facing the gas compensation hole 57. A gas flow groove 59 for gas flow is provided on the circumferential side of the secondary piston body 58. The distance between the gas flow groove 59 and the center line of the secondary piston body 58 is greater than the structural radius of the sealing gasket 510. The structural radius of the sealing gasket 510 is greater than the structural radius of the gas compensation hole 57. The resistance strength of the secondary helical spring 511 against the secondary piston body 58 in the initial state is sufficient to ensure that the front clamp 1 and the rear clamp 2 stably clamp the patient's limb.

[0028] The main function of the elastic pressure control structure 5 is: during the operation of the air extraction device, the gas inside the secondary transverse movable cavity 512 will also be extracted. Once the negative pressure value caused by the extracted gas is greater than the elastic strength of the secondary helical spring 511, the negative pressure will form a suction force on the secondary piston body 58 and the sealing gasket 510, causing the secondary helical spring 511 to be compressed. Outside air will enter the first gas flow hole 45 through the gas compensation hole 57, thereby controlling the maximum value of the negative pressure and preventing the negative pressure intensity from causing secondary damage to the patient's limbs.

[0029] In use, the patient inserts the limb to be immobilized between the front splint 1 and the rear splint 2. Then, the air suction device is used to evacuate the three-way air tube 6. At this time, the main helical spring 48 is compressed and the main piston body 47 moves in a directional manner, which causes the pull rope 49 to continuously contract and enter the main transverse movement cavity 43. The distance between the front splint 1 and the rear splint 2 is reduced, thereby immobilizing the patient's limb with the front splint 1 and the rear splint 2. Of course, the clamping force can be controlled by controlling the intensity of the negative pressure.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A leg joint fixation device for nursing care, comprising a front splint (1), a rear splint (2), four rope holes disposed in two rear planar ends b of the rear splint (2), and two three-way air tubes (6), characterized in that: It also includes, Four universal movable link structures (3) are fixedly installed on the two front flat end a surfaces of the front clamp (1) and correspond to the four rope holes. Inside them are a fixedly installed hemispherical shell (31) and an inner rotating sphere (34) installed inside the hemispherical shell (31) and able to rotate freely inside the hemispherical shell (31). Four negative pressure telescopic structures (4) are fixedly installed on the surfaces of the two rear flat ends b of the rear clamping plate (2). Inside them are a fixedly installed transverse hollow rod (41), a main piston body (47) placed inside the transverse hollow rod (41) and capable of moving away from the front clamping plate (1) under the action of negative air pressure, and a pull rope (49) that passes through the rope hole, is fixedly connected to the inner rotating ball (34), and moves laterally with the main piston body (47). And two elastic pressure control structures (5), which are fixedly installed between two negative pressure telescopic structures (4) located on the same side. Inside them are a fixedly installed transverse hollow column (56), a secondary piston body (58) that can move laterally along the interior of the transverse hollow column (56), and a secondary helical spring (511) that prevents the secondary piston body (58) from moving laterally due to the negative air pressure in the negative pressure telescopic structure (4).

2. The leg joint fixation device for nursing care according to claim 1, characterized in that: The universal movable link structure (3) includes a hemispherical shell (31). A first fixing plate (32) is provided on one side of the hemispherical shell (31) and is integral with the hemispherical shell (31) and fixedly installed on the two front plane end a surfaces of the front clamping plate (1). A hemispherical cavity (33) is provided inside the hemispherical shell (31). An inner rotating sphere (34) is placed inside the hemispherical cavity (33). A concave rope fixing groove (35) is provided on the side of the inner rotating sphere (34).

3. The leg joint fixation device for nursing care according to claim 2, characterized in that: The structural radius of the hemispherical cavity (33) matches the structural radius of the inner rotating sphere (34).

4. The leg joint fixation device for nursing care according to claim 3, characterized in that: The depth of the hemispherical cavity (33) is greater than the structural radius of the inner rotating sphere (34), and the structural diameter of the hemispherical cavity (33) at the opening is smaller than the structural diameter of the inner rotating sphere (34).

5. A leg joint fixation device for nursing care according to claim 4, characterized in that: The negative pressure telescopic structure (4) includes a transverse hollow rod (41). One end of the transverse hollow rod (41) is provided with a second fixing plate (42) which is integral with the transverse hollow rod (41) and fixedly installed on the two rear flat end b surfaces of the rear clamping plate (2). The transverse hollow rod (41) has a main transverse movable cavity (43) inside. The other end of the transverse hollow rod (41) is provided with a pipe structure (44). The pipe structure (44) has a first gas flow hole (45) connecting the main transverse movable cavity (43) inside. The side of the pipe structure (44) is provided with a second gas flow hole (46). The transverse hollow rod (41) has a main piston body (47) that can move laterally along the main transverse movable cavity (43) inside the main transverse movable cavity (43). The main transverse movable cavity (43) has a main helical spring (48) in the area between the main piston body (47) and the first gas flow hole (45). One end face of the main piston body (47) is embedded with a pull rope (49) that passes through the end face of the transverse hollow rod (41) and the rope hole.

6. A leg joint fixation device for nursing care according to claim 5, characterized in that: The initial length of the main helical spring (48) is greater than the lateral length of the main transverse movable cavity (43).

7. A leg joint fixation device for nursing care according to claim 6, characterized in that: The two pipe structures (44) located at the same height are connected by a three-way air pipe (6).

8. A leg joint fixation device for nursing care according to claim 7, characterized in that: The elastic pressure control structure (5) includes a longitudinal hollow tube (51). Each end of the longitudinal hollow tube (51) is provided with an integrally formed ring (52). The center of the ring (52) is provided with an annular hole (53) fixedly placed around the periphery of the pipe body structure (44). Two second gas flow holes (46) located on the same side are connected by a third gas flow hole (54) provided in the longitudinal hollow tube (51). A transverse hollow column (56) is installed in the middle of the longitudinal hollow tube (51) through a transverse gas flow channel (55). The interior of the transverse hollow column (56) is provided with a secondary transverse movable cavity (512) connected to one end of the transverse gas flow channel (55). One end of the transverse hollow column (56) is provided with a gas compensation hole (57) communicating with the outside space. The transverse hollow column (56) is provided with a secondary piston body (58) that can move laterally along the secondary transverse movable cavity (512) inside the secondary transverse movable cavity (512). The secondary transverse movable cavity (512) has a secondary helical spring (511) in a compressed state placed between the secondary piston body (58) and the transverse gas flow channel (55). The secondary piston body (58) has a sealing gasket (510) in a raised state embedded on the end face facing the gas compensation hole (57). The circumferential side of the secondary piston body (58) is provided with a gas flow groove (59) for gas flow.

9. A leg joint fixation device for nursing care according to claim 8, characterized in that: The distance between the center lines of the gas flow groove (59) and the auxiliary piston body (58) is greater than the structural radius of the sealing gasket (510), and the structural radius of the sealing gasket (510) is greater than the structural radius of the gas compensation hole (57).

10. A leg joint fixation device for nursing care according to claim 9, characterized in that: The secondary helical spring (511) provides sufficient resistance to the secondary piston body (58) in its initial state to ensure that the front clamp (1) and the rear clamp (2) provide stable clamping for the patient's limb.

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