Bone joint wound dressing fixer

Abstract

The invention discloses a bone joint wound dressing fixator, relates to the technical field of medical instruments, and particularly aims to solve the problems that in the prior art, when an existing joint dressing is used, due to the fact that the joint of a patient does rehabilitation exercise, the dressing rubs against the wound of the patient, the wound of the patient is hurt, and the patient feels uncomfortable. In order to solve the problem that the dressing cannot be tightly attached to the wound all the time on the basis that rehabilitation exercise is not affected, the bone joint wound dressing fixator comprises an elastic fixing band, a knee protection sleeve, a synchronous moving mechanism, an air conveying mechanism, an air ring and a self-adaption mechanism. The dressing and the wound of the patient are always kept in an attached state in the movement process of the patient, friction between the dressing and the wound is greatly relieved, and cooling, ventilating and drying operation is conducted on the wound at the same time.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a bone and joint wound dressing fixer. Background Art

[0002] The knee joint is composed of the medial and lateral condyles of the femur, the medial and lateral condyles of the tibia, and the patella. It is the largest and most complex joint in the human body, and it is also prone to injury. People who engage in heavy physical labor and intense jumping for a long time are very likely to injure their knee joints. The main symptoms are synovitis, cruciate ligament tear, meniscus injury, cartilage injury, etc. People whose knees are often exposed to cold stimulation are prone to chronic knee diseases, such as pigmented villonodular synovitis, chronic synovitis, etc. These diseases are clinically intractable diseases, and there is no specific medicine. Only surgical treatment can be adopted, such as minimally invasive surgery such as arthroscopy. Moreover, the most annoying thing is that if the recurrence requires surgery, during the clinical treatment process, if the operation process is improper, such as extracting knee effusion or performing knee surgery without aseptic operation, it may cause infection inside the joint cavity. Only physiological saline can be used to flush the joint cavity, and the patient's treatment process is relatively painful. At the same time, diseases such as immune system, rheumatism, rheumatoid arthritis, tuberculosis, etc. can also cause knee joint lesions.

[0003] Currently, bandages or dressings are often used for bandaging after knee surgery. Dressings are wound dressings that cover sores, wounds or other lesions. There are several types of wound dressings: passive dressings (traditional dressings), which passively cover the wound and absorb exudate, providing limited protection for the wound. Interactive dressings, in which there are many forms of interaction between the dressing and the wound, such as absorbing exudate and toxic substances, allowing gas exchange, thereby creating an ideal environment for healing, and a barrier outer layer structure to prevent the invasion of microorganisms in the environment and prevent cross-infection of the wound. Bioactive dressings (sealed dressings), postoperative rehabilitation training is particularly important for total knee replacement, unicompartmental replacement, tibial plateau fracture, medial and lateral femoral condyle fracture and other knee joint surgeries.

[0004] The patent document with patent announcement number CN213098776U discloses a special bandage dressing for knee joint surgery, including dressing layer 1, dressing layer 2 and dressing layer 3. Dressing layer 1 is provided with pleated belt 1 in the middle and a dressing layer is provided at the upper end. Dressing layer 2 is provided with pleated belt 2 in the middle and the dressing is provided at the upper end. Dressing layer 3 is provided with pleated belt 3 in the middle, vertical clinging belts are provided on both sides of pleated belt 1, and horizontal clinging belts are provided at both ends of the vertical clinging belt. When using the bandage dressing, the inner side of dressing layer 1 of the dressing is applied to the wound in the flexed position of the knee joint, the vertical clinging belt and the horizontal clinging belt are wrapped around the knee, and pleated belt 1, pleated belt 2 and pleated belt 3 are naturally multi-layered pleated, which can make dressing layer 1, dressing layer 2 and dressing layer 3 more tortuous and stretchable.

[0005] In addition, the following problems still exist during the use of the above-mentioned special dressing for knee joint surgery: (1) When patients are doing rehabilitation exercises, their knees need to bend and flex repeatedly, which causes strong and repeated friction between the wound surface on the joint and the dressing, causing the patient to feel pain and discomfort, thus affecting wound healing and prolonging recovery time.

[0006] (2) When the patient is performing rehabilitation exercises, the knee is in a dynamic state and the dressing cannot always be attached to the patient's wound. If the dressing is too tightly attached to the wound, it will not affect the rehabilitation exercises.

[0007] Therefore, there is an urgent need to design a bone and joint wound dressing fixator to solve the above problems. Summary of the invention

[0008] In view of the above problems, when the existing joint dressings are used, strong and repeated friction occurs between the dressing and the patient's wound due to the rehabilitation exercise of the patient's joint, thereby causing damage to the patient's wound, and the dressing cannot always be closely attached to the wound without affecting the rehabilitation exercise. Therefore, the present invention provides a bone joint wound dressing fixer, including an elastic fixing belt, a knee protection sleeve, a synchronous moving mechanism, an air supply mechanism, an air ring and an adaptive mechanism. The synchronous moving mechanism is driven to move according to the patient's joint movement trajectory, and the synchronous moving mechanism drives the air supply mechanism to work, thereby supplying air to the air ring and driving the adaptive mechanism to move at the same time. The movement trajectory of the adaptive mechanism is consistent with the movement trajectory of the patient's joint, so that during the patient's exercise, the dressing on the adaptive mechanism always keeps in contact with the patient's wound, and the adaptive mechanism greatly reduces the friction between the dressing and the wound. At the same time, the air ring sprays air to the wound to keep the wound dry and improve the ventilation effect.

[0009] In order to achieve the above object, the technical solution adopted by the present invention is as follows: A bone joint wound dressing fixer comprises an elastic fixing belt and a knee protection sleeve, wherein the elastic fixing belt is symmetrically sewn on the knee protection pad to fix the knee protection pad to the patient's knee joint; and further comprises: The synchronous movement mechanism is symmetrically arranged on both sides of the knee protection pad and is used in conjunction with the patient's knee movement trajectory; The adaptive mechanism is arranged throughout the knee protection pad and is connected with the synchronous movement mechanism.

[0010] Preferably, the synchronous movement mechanism comprises: A slider, slidably connected to the slide plate; Two synchronization rods are symmetrically hinged on the slider, and the other ends are hinged to the knee protection pad; The slide plate is provided with a slide groove, and the slider is clamped in the slide groove; The arc-shaped moving rod is connected with the slider.

[0011] Preferably, the adaptive mechanism comprises: The dressing fixing piece is arranged throughout the knee protection pad and has a two-layer structure; A plurality of springs are arranged between the upper and lower layers of the dressing fixing member and connected to the upper and lower layers of the fixing member.

[0012] Preferably, the bone and joint wound dressing fixator also includes an air supply mechanism and an air ring arranged between the synchronous moving mechanism and the adaptive mechanism. The air ring is arranged on the inner side of the knee protection pad and is connected to the air supply mechanism. The air supply mechanism is also connected to the synchronous moving mechanism. The synchronous moving mechanism drives the air supply mechanism to inflate the air ring.

[0013] Preferably, the gas delivery mechanism comprises: A gas delivery cylinder connected to the adaptive mechanism; The piston is inserted into the gas cylinder and connected to the arc-shaped moving rod; A plurality of gas delivery pipes are connected with the gas delivery cylinder at one end and the gas ring at the other end.

[0014] Preferably, a plurality of air holes are provided on the air ring.

[0015] The beneficial effects of the present invention are as follows: the present invention discloses a bone and joint wound dressing fixator. Compared with the prior art, the present invention has the following improvements: (1) The present invention adopts a design of a synchronous moving mechanism so that the synchronous moving mechanism can cooperate with the patient's joint movement trajectory, thereby realizing that the patient's joint movement drives the synchronous moving mechanism to move, thereby avoiding the dressing on the adaptive mechanism from rubbing against the patient's wound when the patient moves, thereby preventing the wound from being damaged. At the same time, the balloon can be contracted and expanded, so that the balloon can spray air to the wound, thereby keeping the wound dry and improving the ventilation effect.

[0016] (2) The present invention realizes the inflating of the air ring and pulling the adaptive mechanism at the same time through the design of the air delivery mechanism, so that during the patient's movement, the dressing on the adaptive mechanism always fits the patient's wound together, that is, the dressing is adaptively adjusted according to the patient's joint movement trajectory, and the dressing will not fit and separate from the wound due to the patient's movement; That is to say, when the patient is exercising, the knee moves forward due to the bending of the leg, and the adaptive mechanism moves forward accordingly. When the leg returns to a straight state, the knee moves backward relative to the previous state, and the adaptive mechanism moves backward accordingly, ensuring that the friction of the dressing wound is greatly reduced during the patient's exercise, thereby achieving the effect of protecting the wound. (3) The present invention utilizes the design of an adaptive mechanism to buffer the force exerted by the gas supply mechanism on the adaptive mechanism, and at the same time alleviate the friction between the wound and the dressing on the adaptive mechanism, thereby avoiding strong repeated friction between the wound and the dressing during the exercise of the rehabilitation patient, which may cause damage to the patient's wound.

[0017] (4) The present invention achieves drying of the wound and improved ventilation effect through the design of the air ring. The air ring is used in conjunction with the dressing to apply medicine and blow up the patient's wound, thereby avoiding problems such as sweating and fever during rehabilitation exercises, which may lead to untimely ventilation of the wound and be detrimental to wound recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The structure of the bone joint wound dressing fixator of the present invention is shown in the side view Figure 1 ; Figure 2 The structure of the bone joint wound dressing fixator of the present invention is shown in the viewing direction. Figure 2 ; Figure 3 It is a schematic structural diagram of the bone and joint wound dressing fixator of the present invention in the front view direction; Figure 4 The structure of the bone joint wound dressing fixator of the present invention is shown in the rear view direction. Figure 1 ; Figure 5 The structure of the bone joint wound dressing fixator of the present invention is shown in the front view. Figure 2 ; Figure 6 This is an enlarged view of part A of the present invention; Figure 7 It is a structural schematic diagram of the synchronous moving mechanism of the present invention; Figure 8 An exploded view of the connection between the synchronous moving mechanism and the air ring of the present invention; Fig. 9 A perspective view of the adaptive mechanism of the present invention; Fig.10 It is a rear view of the structure of the synchronous moving mechanism and the air ring connection of the present invention; Fig.11 It is a front view of the structure of the synchronous moving mechanism and the air ring connection of the present invention; Fig.12 This is a diagram showing the use state of the bone and joint wound dressing fixator of the present invention; Among them: 1. elastic fixing belt; 2. knee protection sleeve; 3. synchronous moving mechanism; 301. slider; 302. synchronization rod; 303. slide plate; 304. arc-shaped moving rod; 4. gas supply mechanism; 401. gas cylinder; 402. piston; 403. gas supply pipe; 5. adaptive mechanism; 501. dressing fixing part; 502. spring; 6. balloon; 601. air vent. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Embodiment 1: Refer to the attached Figure 1-4 and Fig.12 The bone and joint wound dressing fixer shown in the figure comprises an elastic fixing belt 1 and a knee protection sleeve 2, wherein the elastic fixing belt 1 is symmetrically sewn on the knee protection pad 2 to fix the knee protection pad 2 to the patient's knee joint; The elastic fixing belt 1 and the knee protection pad 2 are made of flexible and breathable materials, and the height of the knee protection pad 2 is 10-17 cm. The width of the protection pad 2 is fixed on the patient's knee, and the fixing belt width is adjusted to 8-15 cm, and the thickness is 1-3 cm. The width of the elastic fixing belt 1 is 3-5 cm, and the length is 9-13 cm. The elastic fixing belt 1 is composed of a fixing belt 1 and a fixing belt 2, both of which are elastic. One end of the fixing belt 1 is sewn on the knee protection pad 2, and the free end is sewn with a Velcro fur surface and a sticky surface. When in use, the knee protection pad 2 is covered on the front of the knee, and the free ends of the fixing belt 1 and the fixing belt 2 are pasted together, so that the pasting depth of the knee 1 and the fixing belt 2 can be adjusted. The tightness of the knee protection pad 2 can be adjusted. Furthermore, a dressing is provided on the inner side of the knee protection pad 2. When in use, the dressing fits against the wound at the patient's joint to treat the wound.

[0021] The use process and flow of a bone and joint wound dressing fixer of the preferred embodiment is: first cover the knee protection pad 2 on the front side of the patient's joint to make the dressing inside fit the patient's wound, then press the knee protection pad 2, use the elastic fixing belt 1 to fix the knee protection pad 2 at the patient's joint, and adjust the tightness to ensure the comfort and fit of the knee protection pad 2 fixed to the patient's joint.

[0022] Embodiment 2: Considering that the bone joint wound dressing fixator in 1 basically meets the needs of bedridden patients, but is not effective for patients who need to undergo related rehabilitation. During the patient's rehabilitation exercise, the dressing on the knee protection pad 2 will rub against the wound on the patient's knee joint with the movement of the patient's knee joint, and the dressing cannot always fit the patient's wound when the patient exercises, affecting the treatment effect. Therefore, this embodiment provides a synchronous movement mechanism 3 and an adaptive mechanism 5. Figure 1-4As shown in 6-8, the dressing is detachably arranged on the inner side of the adaptive mechanism, and the detachable method can be pasting or suturing, so as to facilitate the replacement of the dressing after a period of use. The movement trajectory of the patient drives the moving mechanism 3 and the adaptive mechanism 5 to work, thereby greatly reducing the friction between the dressing and the patient's wound, and ensuring that the dressing is always in contact with the wound in the moving state; Specific reference attached Figure 3 and 7 As shown, the synchronous moving mechanism 3 is arranged on both sides of the knee protection pad 2, and its specific structure is: the synchronous moving mechanism 3 includes a slider 301, two synchronous rods 302, a slide plate 303 and an arc-shaped moving rod 304, and the connection relationship is: the slider 301 is slidably connected with the slide plate 303, and the specific sliding connection structure is that a sliding groove is opened on the slide plate 303, and the slider 301 is clamped in the sliding groove to realize the sliding connection between the slider 301 and the slide plate 303; the two synchronous rods 302 are symmetrically hinged on the slider 301, and the other end is hinged to the knee protection pad 2; the arc-shaped moving rod 304 is simultaneously connected to the symmetrically arranged sliders 301.

[0023] Among them, in this embodiment, the slider 301 is in the shape of a round pancake, and the interior can be hollowed out to reduce the weight of the overall device; the upper and lower ends of the slider 301 are integrally formed with hinge seats for connecting two synchronization rods 303, and the hinge seat is a "C"-shaped structure with one end open, so that the synchronization rod 303 can rotate at the opening of the hinge seat; and the material of the hinge seat is the same as that of the slider 301, both of which are rigid materials, and can be alloy materials or hard plastic materials; The synchronization rod 302 is a rectangular rod-shaped structure with a thickness of 0.2-0.5 cm and a length of half the height of the knee protection pad 2, and is a hollow structure to reduce the weight of the device; illustratively, the synchronization rod is made of a rigid material, such as an alloy material or a hard plastic material, and can form a relatively stable whole with the slider 301. In the process of cooperating with the patient's movement, the slider 301 can be stably moved forward and backward in the slide plate 303, thereby driving the arc-shaped moving rod 304 to move; Furthermore, the slider 301 is slidably connected with the slide plate 303. The specific sliding connection structure is that a slide groove is provided on the slide plate 303, and the slider 301 is clamped in the slide groove to realize the sliding connection between the slider 301 and the slide plate 303; the slide plate 303 is an arc-shaped structure, which fits the outer periphery of the knee protection pad 2 and is consistent with the curvature of the knee protection pad 2, so that the slider 301 can slide stably with the outer periphery of the knee protection pad 2 as the fulcrum, and the material of the slide plate 303 is selected from a rigid material, and an alloy material or a hard plastic material can be used, so that when the knee protection pad 2 is folded under the patient's exercise, it will not be affected by the folding of the knee protection pad 2, thereby affecting the sliding of the slide plate 303 and the synchronization rod 302; In this embodiment, the arc moving rod 304 is a rod-shaped structure with a diameter of 0.3-0.5 cm, and its structure is arc-shaped and is arranged in front and behind the knee protection pad 2. The arc formed by it is larger than the arc of the outer side of the knee protection pad 2. This larger arc setting can ensure that the arc moving rod 304 is away from and close to the outer side of the knee protection pad 2; Considering that the knee protection pad 2 is made of a flexible and breathable material, the synchronous movement mechanism 3 needs to cooperate with the patient's movement trajectory, so the materials of the components of the synchronous movement mechanism 3 can be selected from rigid materials, such as hard plastic or metal, and the components of the synchronous movement mechanism 3 can be fixed on the upper side of the knee protection pad 2 by bonding or sewing, and the synchronization rod 302 is hinged to the knee protection pad 2 through a metal seat or a hard plastic seat; When the patient performs rehabilitation exercises, the knee bends, which drives one end of the upper and lower synchronization rods 302 to move backwards. The movement of one end of the synchronization rod 302 backwards causes the other end of the synchronization rod 302 to move forwards. However, under the limiting effect of the slide groove, the synchronization rod 302 can only push the slider 301 to slide forward in the slide groove, thereby pushing the arc-shaped moving rod 304 to move outwards relative to the knee protection pad 2. Specific reference attached Fig. 9 As shown, the adaptive mechanism 5 plays a buffering role and ensures that the dressing set thereon always fits the wound on the patient's joint and is not affected by the patient's rehabilitation movements; the specific structure of the adaptive mechanism 5 is: the adaptive mechanism 5 includes a dressing fixing member 501 and a plurality of springs 502, the dressing fixing member 501 is arranged throughout the knee protection pad 2 and is a two-layer structure, the plurality of springs 502 are arranged between the upper and lower layers of the dressing fixing member 501, and are fixedly connected to the upper and lower layers of the fixing member 501, and the outer side surface of the dressing fixing member 501 is directly or indirectly connected to the arc-shaped moving rod 304; wherein, the dressing fixing member 501 is made of a soft breathable material, which can ensure that the patient's wound meets the ventilation requirements during use, and the setting of the soft material can ensure the patient's comfort during use, and the soft material can better fit the different states of the patient's knee during exercise; When the patient is doing rehabilitation exercises, the knee bends to squeeze the dressing, and the dressing is squeezed and then compresses the spring 502. The spring 502 buffers the pressure from the dressing, thereby easing the friction between the wound and the dressing, reducing the patient's discomfort. At the same time, the spring 502 can also maintain the stability of the dressing. In this embodiment, when the patient performs rehabilitation exercises, the knee bends, which drives one end point of the upper and lower synchronization rods 302 to move backwards. The movement of one end point of the synchronization rod 302 backwards causes the other end point to move forwards. However, under the limiting effect of the slide groove, the synchronization rod 302 can only push the slider 301 to slide forward in the slide groove, thereby pushing the arc-shaped moving rod 304 to move outwards relative to the knee protection pad 2. The arc-shaped moving rod 304 moves outwards, pulling the upper layer of the dressing fixing member 501 outwards, thereby stretching the spring 502 and the lower layer of the dressing fixing member 501 outwards, and finally making the dressing fixing member 501 attached to the lower layer of the dressing fixing member 501. The outer dressing moves forward synchronously with the wound at the patient's joint and always fits the patient's wound. When the patient's knee returns to a straight state, the slider 301 moves backward and drives the arc-shaped movable rod 304 to move backward. The arc-shaped movable rod 304 moves backward to push the fixing member 501 inward, thereby causing the fixing member 501 to drive the dressing backward to fit the patient's straight knee. This ensures that the dressing always fits the patient's wound regardless of the state of the knee (bent or straight), and adaptively adjusts according to the dynamic changes of the patient's knee to ensure that the friction between the wound and the dressing is minimized when the dressing fits.

[0024] Embodiment 3: Considering that the patient will sweat and have a higher body temperature during rehabilitation exercise, which may cause discomfort or even inflammation of the wound, the air delivery mechanism 4 and the air ring 6 are designed. Figure 4 and 6 As shown in 8-11, the patient provides power to drive the synchronous moving mechanism 3 to move, and the synchronous moving mechanism 3 drives the air delivery mechanism 4 to repeatedly inflate the air ring 6, so that the air ring 6 blows air to the wound, thereby achieving the effect of cooling, drying and ventilating the patient's wound; Specific reference attached Figure 1 As shown, the gas delivery mechanism 4 is arranged between the synchronous moving mechanism 3 and the adaptive mechanism 5, and the gas delivery mechanism 4 is connected to the synchronous moving mechanism 3 and the air ring 6 respectively. The synchronous moving mechanism 3 drives the gas delivery mechanism 4 to repeatedly inflate the air ring 6, so that the air ring 6 can cool, dry and ventilate the patient's wound; Further references Figure 6 As shown, the gas delivery mechanism 4 includes a gas delivery cylinder 401, a piston 402 and a plurality of gas delivery pipes 403, and the connection relationship thereof is as follows: the gas delivery cylinder 401 is connected to the outer surface of the adaptive mechanism 5, the piston 402 is inserted in the gas delivery cylinder 401 and connected to the arc-shaped moving rod 304, and one end of the plurality of gas delivery pipes 403 is connected to the gas delivery cylinder 401, and the other end is connected to the gas ring 6; when the arc-shaped moving rod 304 moves, the piston 402 is driven to perform piston motion in the gas delivery cylinder 401, so that the gas in the gas delivery cylinder 401 is repeatedly input into the gas ring 6 through the gas delivery pipe 403; Among them, in this embodiment, the gas cylinder 401 is a cylindrical structure, and the specific structure of its connection with the adaptive mechanism 5 is that a pulling block is arranged at the bottom of the gas cylinder 401. Preferably, the pulling block is a cylinder, which is bonded or sutured to the adaptive mechanism 5. Considering the stability, in actual use, a contact block can also be integrally formed at the bottom of the pulling block. The contact block can be a round pancake-shaped structure, and its diameter is two to three times the diameter of the pulling block. This design can increase the contact area between the pulling block and the adaptive mechanism 5, and at the same time amplify the pulling force of the pulling block on the adaptive mechanism 5, so that the gas cylinder 401 can better pull the adaptive mechanism 5, so as to reduce friction when the patient moves, and fit the patient's movement trajectory to ensure that the dressing and the wound are in a consistent fit state; Further reference Figure 5 As shown, a plurality of air holes 601 are arranged on the inner side of the air ring 6, and the gas entering the air ring 6 is ejected from the air holes 601 to the patient's wound through the piston movement, so as to achieve the purpose of cooling, drying and ventilating the wound; wherein, the air ring 6 is arranged on the inner side of the knee protection pad 2, and its inner cavity is slightly larger than the inner cavity of the dressing fixing member 501. In the whole structure of the device, the dressing fixing member 501 is fitted with the inner wall of the air ring 6. When the dressing on the dressing fixing member 501 is fitted with the patient's wound, the air holes 601 on the air ring 6 are arranged slightly higher. , will not be blocked by the dressing fixing piece 501, thereby ensuring that the dressing fixing piece 501 fits the wound. At the same time, the air holes 601 on the air ring 6 can be used to blow air to the dressing under the action of the arc-shaped moving rod 304, thereby increasing the ventilation effect of the dressing and thus improving the air permeability of the wound. Especially during the patient's exercise, the higher the patient's exercise frequency, the higher the inflation frequency of the air ring 6, the more gas is ejected from the air holes 601 within a certain period of time, and the better the ventilation effect on the wound, thus forming a good ventilation cycle process.

[0025] The principle and process of the bone joint wound dressing fixer of the present invention during use are as follows: first, the knee protection pad 2 is covered on the front side of the patient's joint, so that the dressing in the period fits the patient's wound, and then the knee protection pad 2 is pressed, and the elastic fixing belt 1 is used to fix the knee protection pad 2 on the patient's joint, and the tightness is adjusted to ensure the comfort and fit of the knee protection pad 2 fixed on the patient's joint. Fig.12 A diagram of the dressing fixture in a well-dressed state; When the patient performs rehabilitation exercises, the knee bends, which drives one end of the upper and lower synchronization rods 302 to move backwards. The movement of one end of the synchronization rod 302 backwards causes the other end to move forwards. However, under the limiting effect of the slide groove, the synchronization rod 302 can only push the slider 301 to slide forward in the slide groove, thereby pushing the arc-shaped moving rod 304 to move outwards relative to the knee protection pad 2. The arc-shaped moving rod 304 moves outwards, pulling the upper layer of the dressing fixing part 501 outwards, thereby stretching the spring 502 and the lower layer of the dressing fixing part 501 outwards, and finally making the dressing fixing part 501 attached to the outer side of the lower layer of the dressing fixing part 501. The dressing moves forward synchronously with the wound at the patient's joint and always fits the wound of the patient. When the patient's knee returns to a straight state, the slider 301 moves backward and drives the arc-shaped moving rod 304 to move backward. The arc-shaped moving rod 304 moves backward to push the fixing member 501 inward, so that the fixing member 501 drives the dressing to move backward and fit the straight knee of the patient. The dressing always fits the wound of the patient regardless of the state of the knee (bent or straight), and the dressing will be adaptively adjusted according to the dynamic changes of the patient's knee to ensure that the friction between the wound and the dressing is minimized when the dressing fits. At the same time, when the arc-shaped moving rod 304 moves, it drives the piston 402 to do piston movement in the gas cylinder 401, so that the gas in the gas cylinder 401 is repeatedly input into the gas circle 6 through the gas pipe 403, and is sprayed from the air hole 601 to the patient's wound, so as to achieve the purpose of cooling, drying and ventilating the wound. The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A bone joint wound dressing fixator, comprising an elastic fixing belt (1) and a knee protection sleeve (2), wherein the elastic fixing belt (1) is symmetrically sewn to the knee protection pad (2) to fix the knee protection pad (2) to the patient's knee joint; characterized in that: Also includes: A synchronous movement mechanism (3) is symmetrically arranged on both sides of the knee protection pad (2) and is used in conjunction with the patient's knee movement trajectory; The adaptive mechanism (5) is arranged throughout the knee protection pad (2) and is connected to the synchronous movement mechanism (3).

2. A bone and joint wound dressing fixator according to claim 1, characterized in that: The synchronous movement mechanism (3) comprises: A slider (301) is slidably connected to a slide plate (303); Two synchronization rods (302) are symmetrically hinged on the slider (301), and the other ends are hinged to the knee protection pad (2); The slide plate (303) is provided with a slide groove, and the slide block (301) is clamped in the slide groove; The arc-shaped moving rod (304) is connected to the sliding block (301).

3. A bone and joint wound dressing fixator according to claim 1, characterized in that: The adaptive mechanism (5) comprises: A dressing fixing piece (501) is arranged through the inside of the knee protection pad (2) and has a two-layer structure; A plurality of springs (502) are arranged between the upper and lower layers of the dressing fixing member (501), and are connected to the upper and lower layers of the fixing member (501).

4. A bone and joint wound dressing fixator according to claim 1, characterized in that: The bone and joint wound dressing fixator further comprises an air delivery mechanism (4) and an air ring (6) arranged between the synchronous moving mechanism (3) and the adaptive mechanism (5); the air ring (6) is arranged on the inner side of the knee protection pad (2) and is connected to the air delivery mechanism (4); the air delivery mechanism (4) is also connected to the synchronous moving mechanism (3); the synchronous moving mechanism (3) drives the air delivery mechanism (4) to inflate the air ring (6).

5. A bone and joint wound dressing fixator according to claim 4, characterized in that: The gas transmission mechanism (4) comprises: A gas delivery cylinder (401) connected to the adaptive mechanism (5); The piston (402) is inserted into the gas delivery cylinder (401) and connected to the arc-shaped moving rod (304); A plurality of gas delivery pipes (403) are connected at one end to the gas delivery cylinder (401) and at the other end to the gas ring (6).

6. A bone and joint wound dressing fixator according to claim 3, characterized in that: The air ring (6) is provided with a plurality of air holes (601).

Images