A post-operative fixation distractor for a hand metacarpal region surgery and method of use

Abstract

This invention discloses a postoperative fixation and retractor for surgery on the thenar eminence area of ​​the hand and its method of use. Belonging to the field of medical device technology, the invention includes a palm fixation plate; one end of a height adjustment mechanism is slidably connected to the palm fixation plate, and the other end of the height adjustment mechanism is connected to an angle adjuster; the other end of the angle adjuster is fixedly installed on the palm fixation plate, and the angle adjuster has an arc-shaped structure with a thumb fixation component slidably connected to it; an index finger fixation component is slidably connected to the palm fixation plate. Compared with existing technologies, the postoperative fixation and retractor disclosed in this application provides better fixation and is more stable. The index finger and thumb fixation components ensure stability after fixation, preventing the patient from involuntarily clenching their hand. Furthermore, with the cooperation of the angle adjuster, telescopic connector, and height adjustment mechanism, the thenar eminence area can be effectively fixed, maintaining an ideal retractor angle and preventing thenar eminence contracture.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, and in particular relates to a postoperative fixation and retractor for surgery on the thenar eminence of the hand and its method of use. Background Technology

[0002] The thenar eminence, or the area between the thumb and index finger, is one of the most important functional areas of the hand. Composed of the thumb metacarpals, index finger metacarpals, the first dorsal interosseous muscle, the adductor pollicis brevis, and other structures, it plays a crucial role in hand function, primarily including grasping, pinching, and opposition. Injuries to the thenar eminence, such as trauma, burns, infections, and certain diseases like congenital thumb dysplasia and palmar aponeurosis contracture, may require surgical treatment. Surgical methods include tendon repair, nerve repair, fracture fixation, and thenar eminence reconstruction. Postoperative scar contracture is common in the thenar eminence area, leading to narrowing of the thenar eminence and severely affecting hand function. Currently, commonly used postoperative fixation methods for the thenar eminence include plaster casts and braces, but these have drawbacks such as inadequate fixation, poor comfort, and restricted functional exercises.

[0003] There is an urgent need to propose a postoperative fixation and retractor for surgery on the thenar eminence area of ​​the hand and its usage method in order to solve the above-mentioned technical problems. Summary of the Invention

[0004] The purpose of this invention is to provide a postoperative fixation and retractor for hand surgery on the thenar eminence area and its method of use, to solve the aforementioned problems. Compared with existing technologies, the postoperative fixation and retractor for hand surgery on the thenar eminence area disclosed in this application has a better fixation effect and is more stable. Through the fixation of the index finger and thumb, the stability of the index finger and thumb after fixation is ensured, preventing the patient from involuntarily clenching their hand. Furthermore, with the cooperation of the angle adjuster, telescopic connector, and height adjustment mechanism, the thenar eminence area can be effectively fixed, maintaining an ideal retractor angle and preventing thenar eminence contracture. It also facilitates functional exercises: the angle adjuster can be adjusted according to the postoperative recovery progress, facilitating early functional exercises and promoting hand function recovery. At the same time, the postoperative fixation and retractor disclosed in this application is simple to operate: its simple structure and convenient operation make it easy for medical staff to use and for patients to wear. In addition, the postoperative fixation and retractor of this application is made of lightweight, breathable, and malleable materials, making it comfortable to wear and reducing the occurrence of complications such as pressure sores and circulatory disorders.

[0005] To achieve the above objectives, the present invention provides the following solution: The present invention discloses a postoperative fixation and retractor for surgery on the thenar eminence of the hand, including a palm fixation plate for fixing the palm and fitting snugly to the palm. A height adjustment mechanism, one end of which is slidably connected to the palm fixing plate, and the other end of which is connected to an angle adjuster. When the height adjustment mechanism moves along a first direction, it is used to adjust the height distance to ensure the thumb is fixed at a certain height. An angle adjuster, the other end of which is fixedly mounted on the palm fixation plate, the angle adjuster has an arc-shaped structure, and a thumb fixation component is slidably connected to the angle adjuster. When the thumb fixation component moves on the angle adjuster in a second direction or a third direction, the distance between the thumb and index finger can be adjusted to adapt to the angle of the thumb and index finger of different patients. An index finger fixation device is slidably attached to the palm fixation plate and located at the index finger position on the palm fixation plate. The index finger fixation device is used to fix the patient's index finger.

[0006] Preferably, the thumb retainer includes: A connector, on which a slider I is fixedly connected, the slider I being slidably connected to the angle adjuster; A thumb fixing plate, the top of which is fixedly connected to the bottom of the connector; Tightening component I, which is screwed onto slider I and located opposite the connector, is used to tighten the thumb fixing plate onto the angle adjuster; Tightening strap II: Several tightening straps II are fixedly connected to the thumb fixing plate.

[0007] Preferably, the height adjustment mechanism includes: A sleeve, one end of which is slidably connected to the palm fixing plate, and an adjusting rod is slidably connected to the other end; An adjusting rod, the other end of which is connected to the angle adjuster; A screwing component is screwed onto the outside of the sleeve, and the screwing component is used to tighten the sleeve and the adjusting rod.

[0008] Preferably, the palm fixing plate is provided with a sliding groove II, and the bottom end of the sleeve is fixedly connected to a slider III, which slides in the sliding groove II.

[0009] Preferably, it also includes a telescopic connector, one end of which is fixed to the adjusting rod, and the other end of which is fixed to or inserted into the index finger fixing member.

[0010] Preferably, the palm fixing plate is provided with a sliding groove I, and the bottom of the index finger fixing member is fixedly connected with a slider II, which slides in the sliding groove I.

[0011] Preferably, the angle connector has a through groove, and the slider I slides in the through groove.

[0012] Preferably, the index finger fixing member is an index finger fixing plate, and the index finger fixing plate is further provided with a plurality of tightening straps III, and the cross-section of the thumb fixing plate and the index finger fixing plate is an arc-shaped structure.

[0013] Preferably, the palm fixing plate is provided with a tightening strap I for fixing the palm part.

[0014] To achieve the above objectives, the present invention also provides the following solution: The present invention also discloses a method for using a postoperative fixation and retractor for surgery on the thenar eminence region of the hand. Fix the palm: Initially fix the patient's palm to the palm fixation plate using tightening strap I; Fix the index finger according to the location of the patient's wound: Fix the patient's index finger to the index finger fixation plate and secure it with tightening strap II to maintain the position of the index finger; Fix the thumb according to the location of the patient's wound: Fix the patient's thumb to the thumb fixation plate and secure it with tightening strap II to maintain the position of the thumb; Adjust the angle adjuster according to the patient's wound to adjust the angle between the index finger and thumb, thus making the angle of the web between the thumb and index finger suitable for different patients; The telescopic connector can be adjusted according to the patient's wound, and the angle between the index finger and thumb can also be adjusted to suit the angle of the web between different patients.

[0015] Compared with existing technologies, the present invention has the following advantages and technical effects: The postoperative fixation and retractor for the thenar eminence region of the hand disclosed in this invention has a better fixation effect and is more stable than existing technologies. The index finger and thumb fixation components ensure stability after fixation, preventing patients from involuntarily clenching their hands. Furthermore, with the cooperation of the angle adjuster, telescopic connector, and height adjustment mechanism, the thenar eminence region can be effectively fixed, maintaining an ideal retractor angle and preventing thenar eminence contracture. It also facilitates functional exercises: the angle adjuster can adjust the fixation angle according to postoperative recovery, facilitating early functional exercises and promoting hand function recovery. Simultaneously, the postoperative fixation and retractor disclosed in this application is easy to operate: its simple structure and convenient operation make it easy for medical staff and patients to wear. In addition, the postoperative fixation and retractor of this application is made of lightweight, breathable, and malleable materials, ensuring comfortable wear and reducing the occurrence of complications such as pressure sores and circulatory disorders. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the postoperative fixation and dispersing device in this invention; Figure 2 for Figure 1 Another perspective structural diagram; Figure 3 for Figure 1 A magnified view of part A in the image; Figure 4 This is a schematic diagram of the thumb fixing component in this invention; Figure 5 This is a schematic diagram of the height adjustment mechanism in this invention; Figure 6 This is a schematic diagram of the index finger fixing component in Example 3; Figure 7 This is a schematic diagram of the index finger fixing component in Example 4; Figure 8 This is a schematic diagram of the thumb fixation component in Example 5; Figure 9 for Figure 8 Another perspective structural diagram; Figure 10 This is a schematic diagram of the limiting block in Example 2; Figure 11 This is a schematic diagram of the angle adjuster in Example 6; Figure 12 This is a schematic diagram of the hand-fixing plate in Example 7; The components include: 1. Palm fixing plate; 101. Plate body I; 102. Plate body II; 103. Telescopic rod; 104. Cavity; 2. Tightening strap I; 3. Thumb fixing component; 31. Thumb fixing plate; 32. Tightening strap II; 33. Connecting component; 34. Slider I; 35. Tightening component I; 36. Finger sleeve; 37. Rubber plug; 4. Index finger fixing plate; 5. Slide groove I; 6. Slider II; 7. Connecting mechanism; 71. Rotating shaft; 72. 73. Tightening component II; 74. Spherical base; 75. Ball head; 76. Connecting block; 8. Tightening belt III; 9. Height adjustment mechanism; 91. Sleeve; 92. Adjusting rod; 93. Tightening component; 10. Slide groove II; 11. Slider III; 12. Limiting block; 121. Limiting block body; 122. Top plate; 123. Fixing post; 124. Blind hole; 13. Telescopic connector; 14. Angle adjuster; 15. Groove; 16. Through groove. Detailed Implementation

[0017] 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.

[0018] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Example 1 like Figures 1-5 As shown, the present invention discloses a postoperative fixation and retractor for surgery on the thenar eminence of the hand, including a palm fixation plate 1 for fixing the palm and fitting snugly to the palm. A height adjustment mechanism 9, one end of which is slidably connected to the palm fixing plate 1, and the other end of which is connected to an angle adjuster 14. When the height adjustment mechanism 9 moves along a first direction, it is used to adjust the height distance to ensure the height of the thumb is fixed. Angle adjuster 14, the other end of which is fixedly installed on the palm fixing plate 1. The angle adjuster 14 has an arc-shaped structure. A thumb fixing member 3 is slidably connected to the angle adjuster 14. When the thumb fixing member 3 moves on the angle adjuster 14 in the second or third direction, the distance between the thumb and index finger can be adjusted to adapt to the angle of the thumb and index finger of different patients. An index finger fixation device is slidably connected to the palm fixation plate 1. The index finger fixation device is located at the index finger position of the palm fixation plate 1 and is used to fix the patient's index finger.

[0020] Specifically, such as Figures 1 to 3 As shown, to ensure the comfort of the patient's fingers, soft rubber pads can be placed inside the thumb fixation piece 3 and the index finger fixation piece respectively; at the same time, to ensure stability during use, the height adjustment mechanism 9 and the angle adjuster 14 can be fixed together. For easy disassembly and installation, screws can also be used to fix the height adjustment mechanism 9 and the angle adjuster 14 together.

[0021] In use, first fix the patient's hand on the palm fixation plate 1. Then, adjust the position of the index finger fixation piece and the thumb fixation piece 3 according to the location of the injury in the thenar eminence. Specifically, if the injury in the thenar eminence area is on the dorsal side, after connecting the hand, thumb, and index finger, adjust the thumb to abduct 90° on the palmar side and fix it in place. If the injury in the thenar eminence area is on the palmar side, after connecting the hand, thumb, and index finger, adjust the thumb to abduct 90° horizontally and fix it in place. If the injury in the thenar eminence area is on both the dorsal and palmar sides, after connecting the hand, thumb, and index finger, adjust the thumb to abduct 45° on the palmar side and fix it in place. The hand, thumb, and index finger are adjusted by the height adjustment mechanism 9 and the angle adjuster 14. Compared with existing technologies, the postoperative fixation and retractor for the thenar eminence region of the hand disclosed in this application provides better fixation and stability. The index finger fixation component and thumb fixation component 3 ensure stability after fixation, preventing the patient from voluntarily clenching their hand. Furthermore, the angle adjuster 14, telescopic connector 13, and height adjustment mechanism 9 effectively fix the thenar eminence region, maintaining an ideal opening angle and preventing thenar eminence contracture. It also facilitates functional exercises: the angle adjuster 14 can adjust the fixation angle according to postoperative recovery, facilitating early functional exercises and promoting hand function recovery. The postoperative fixation and retractor disclosed in this application is also easy to operate: its simple structure and convenient operation make it easy for medical staff and patients to wear. In addition, the postoperative fixation and retractor is made of lightweight, breathable, and malleable materials, ensuring comfortable wear and reducing complications such as pressure sores and circulatory disorders.

[0022] In a further optimized design, the thumb fixation component 3 includes: Connector 33, on which slider I 34 is fixedly connected, slider I 34 slidingly connected to angle adjuster 14; A thumb fixing plate 31, the top of which is fixedly connected to the bottom of the connector 33; Tightening component I35, which is screwed onto the slider I34 and located opposite the connector 33, is used to tighten the thumb fixing plate 31 onto the angle adjuster 14. Tightening straps II 32: Several tightening straps II 32 are fixedly connected to the thumb fixing plate 31.

[0023] Specifically, such as Figure 4As shown, connector 33 is a cylinder connected to a connecting plate. The cylinder and connecting plate are integrally formed. The connecting plate is fixedly connected to thumb fixing plate 31, and the tightening strap II 32 is an elastic cord with tension. When medical staff put it on the patient, the patient can directly fit their thumb into thumb fixing plate 31, and the tightening strap II 32 will fix their thumb. When it is necessary to adjust the angle between thumb fixing plate 31 and index finger fixing piece, tightening piece I 35 can be loosened. Medical staff can hold the cylinder of connector 33 and slide it. When it slides to the designated position, tightening piece I 35 can be tightened to the point where it cannot be tightened any further. At this time, slider I 34 is fixed in angle adjuster 14 and cannot move. Tightening piece I can be a nut to initiate the tightening action. In addition, if the tightening strap II 32 cannot guarantee the fixation, a buckle can be used, such as the buckle connection commonly used on backpacks.

[0024] In a further optimized design, the height adjustment mechanism 9 includes: Sleeve 91, one end of which is slidably connected to the palm fixing plate 1, and the other end is slidably connected to an adjusting rod 92; Adjusting rod 92, the other end of which is connected to the angle adjuster 14; A screwing component 93 is screwed onto the outside of the sleeve 91. The screwing component 93 is used to tighten the sleeve 91 and the adjusting rod 92.

[0025] Specifically, such as Figure 5 As shown, in order to facilitate the height adjustment to accommodate the different thumb lengths of patients, a sleeve 91 and an adjusting rod 92 are used. The first direction is the direction in which the adjusting rod 92 is away from the sleeve 91, thereby increasing the height. When the appropriate height is adjusted, it is fixed by a screw 93, which can be a bolt.

[0026] In a further optimized design, a sliding groove II10 is provided on the palm fixing plate 1, and a slider III11 is fixedly connected to the bottom end of the sleeve 91, with the slider III11 sliding in the sliding groove II10.

[0027] Specifically, such as Figure 1 As shown, in order to ensure that the height adjustment mechanism 9 can adjust the height normally without affecting the use of other structural components, when the adjustment rod 92 is adjusted to a certain height, in order to prevent the angle adjuster 14 from being damaged due to its inability to adapt to the height, medical staff can also adjust the height by appropriately sliding the slider III 11 to prevent the angle adjuster 14 from being damaged. The distance that the slider III 11 moves is only to adapt to the stress of the angle adjuster 14, and will not move a large distance that would cause the height to be unreliable.

[0028] Further optimization of the scheme also includes a telescopic connector 13, one end of which is fixed to the adjusting rod 92, and the other end of which is fixed to or inserted into the index finger fixing member.

[0029] Specifically, such as Figure 2 As shown, the telescopic connector 13 adopts a telescopic rod 103. The presence of the telescopic connector 13 can ensure the stability of the index finger fixing piece, and at the same time, it can slightly move the index finger fixing piece to ensure the angle of the tiger's mouth area.

[0030] In a further optimized design, a sliding groove I5 is provided on the palm fixing plate 1, and a slider II6 is fixedly connected to the bottom of the index finger fixing component, with the slider II6 sliding within the sliding groove I5.

[0031] Specifically, such as Figure 2 As shown, the index finger fixing member is moved by the cooperation of the slider II6 and the telescopic connector 13, thereby changing the angle between the thumb fixing member 3 and the index finger fixing member.

[0032] In a further optimized design, a through groove 16 is provided on the angle connector, and the slider I slides into the through groove 16.

[0033] In a further optimized design, the index finger fixing component is an index finger fixing plate 4, and the index finger fixing plate 4 is also provided with several tightening straps Ⅲ8. The cross-sections of the thumb fixing plate 31 and the index finger fixing plate 4 are arc-shaped structures.

[0034] In a further optimized design, the palm fixing plate 1 is provided with a tightening strap I2 for fixing the palm.

[0035] In addition, this application also provides a method for using a postoperative fixation and retractor for surgery on the thenar eminence area of ​​the hand, the specific steps of which are as follows: Fixing the palm: The patient's palm is initially fixed to the palm fixation plate 1 using the tightening strap I2; Fix the index finger according to the location of the patient's wound: Fix the patient's index finger on the index finger fixation plate 4 and fix it with the tightening strap II 32 to maintain the position of the index finger; Fix the thumb according to the location of the patient's wound: Fix the patient's thumb on the thumb fixation plate 31 and fix it with the tightening strap II 32 to maintain the position of the thumb; Adjust the angle adjuster 14 according to the patient's wound to adjust the angle between the index finger and thumb, thereby adapting to the angle of the web between the thumb and index finger for different patients; The telescopic connector 13 can be adjusted according to the patient's wound, and the angle between the index finger and thumb can also be adjusted to suit the angle of the web between different patients.

[0036] Example 2 The only difference from Embodiment 1 is that, in order to ensure that slider II 6 and slider III 11 can be limited and fixed at different positions, a number of blind holes 124 can be opened on slide groove I 5 and slide groove II 10 respectively. There is a certain distance between the blind holes 124, and a limiting block 12 is inserted into the blind hole 124 to fix slider II 6 and slider III 11 at a certain position and prevent them from sliding.

[0037] Specifically, such as Figure 1 and Figure 10 As shown, the limiting block 12 includes a limiting block body 121, which is inserted into the slide groove I 5 and / or slide groove II 10. The top of the limiting block body 121 is integrally formed and connected to a top plate 122. When the limiting block body 121 is inserted into the slide groove I 5 and / or slide groove II 10, the bottom surface of the top plate 122 is in contact with the top surface of the palm fixing plate 1. Two fixing posts 123 are fixedly installed on both sides of the top plate 122, and the two fixing posts 123 are located on both sides of the limiting block body 121. During installation, the fixing posts 123 are inserted into the blind holes 124.

[0038] Example 3 The only difference from Embodiment 1 is that a connecting mechanism 7 is connected between the index finger fixing member and the slider II 6. The connecting mechanism 7 includes a connecting block 75 that is fixedly connected to the bottom of the index finger fixing member. A rotating shaft 71 is passed through the connecting blocks 75. The rotating shaft 71 is rotatably connected to the slider II 6. In order to ensure the angle of the index finger fixing member, a tightening member II 72 is screwed on the other side of the slider II 6.

[0039] Specifically, such as Figure 6 As shown, in order to allow the index finger to be adjusted to different angles so that the tiger's mouth area is at a suitable angle, the index finger fixing piece can be rotated so that its angle relative to the palm fixing plate 1 can be adjusted. At this time, the telescopic connector 13 and the index finger fixing piece are connected by a plug-in connection. At this time, it can be directly disconnected to adjust the angle.

[0040] Example 4 The only difference from Embodiment 3 is that the connecting mechanism 7 includes a ball head 74 fixedly connected to the bottom of the index finger fixing member, and the slider II 6 adopts a spherical base 73. Specifically, as shown... Figure 7 As shown, when making adjustments, simply rotate the index finger retainer. To ensure stability, the ball head 74 can be covered with a rubber layer to guarantee friction, thereby ensuring the stability of the index finger retainer after adjustment.

[0041] Example 5 The only difference from Embodiment 1 is that the thumb fixing member 3 and the index finger fixing member are finger sleeves 36. The top of the finger sleeve 36 is detachably connected to one end of the connector 33. The other end of the connector 33 of the thumb fixing member 3 is connected to the slider I. The other end of the connector 33 of the index finger fixing plate 4 is connected to one end of the telescopic connector 13.

[0042] Specifically, such as Figure 8 and Figure 9 As shown, the finger sleeve 36 is replaceable. The connector 33 uses a ball head 74 and a ball seat for connection. The ball head 74 is made of rubber for easy disassembly and installation. When changing to a different size, simply remove the finger sleeve 36 and replace it with the one to be replaced. The material of the finger sleeve 36 is the same as that of the thumb fixing plate 31 and the index finger fixing plate 4. To prevent the finger sleeve 36 from being too large, a rubber plug 37 is used to fasten it, preventing it from shifting and becoming unstable. The side of the rubber plug 37 that contacts the finger is covered with cotton cloth or sponge to prevent scratching the patient's finger skin and improve comfort.

[0043] Example 6 The only difference from Embodiment 1 is that the angle adjuster 14 has a groove 15, and the connector 33 on the thumb fixing plate 31 is directly bolted; specifically, as shown in the example... Figure 11 As shown, when sliding is required, loosen the bolt so that it can slide within the groove 15. When it slides to the designated position, tighten the bolt.

[0044] Example 7 The difference from Embodiment 1 is only that the palm fixing plate 1 includes plate body I 101 and plate body II 102, and plate body I 101 and plate body II 102 are connected by a telescopic rod 103. Specifically, as shown... Figure 12 As shown, a cavity 104 is provided inside plate I 101. Several telescopic rods 103 are fixedly installed in the cavity 104. The other end of the telescopic rods 103 is fixedly installed on plate II 102. When the width of the palm fixing plate 1 is insufficient, plate I 101 and plate II 102 can be separated. Under the action of the telescopic rods 103, the width of the palm fixing plate 1 can be widened, and the length of the palm fixing plate 1 can also be extended. This is achieved simply by placing the telescopic rods 103 in the length direction.

[0045] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0046] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A post-operative immobilization spreader for use in a hand surgery of the metacarpal region, characterized in that: Includes a palm fixing plate (1) for fixing the palm and fitting snugly to the palm; A height adjustment mechanism (9) is provided, one end of which is slidably connected to the palm fixing plate (1), and the other end of which is connected to an angle adjuster (14). The height adjustment mechanism (9) moves along a first direction to adjust the height distance to ensure the height of the thumb is fixed. Angle adjuster (14), the other end of which is fixedly installed on the palm fixing plate (1), the angle adjuster (14) is an arc structure, and a thumb fixing member (3) is slidably connected on the angle adjuster (14). When the thumb fixing member (3) moves on the angle adjuster (14), it can adjust the distance between the thumb and index finger to adapt to the angle of the thumb and index finger of different patients. The index finger fixation piece is slidably attached to the palm fixation plate (1) and is located at the index finger position of the palm fixation plate (1). The index finger fixation piece is used to fix the patient's index finger.

2. The post-operative immobilization spreader for surgery in the region of the metacarpophalangeal joint of the hand according to claim 1, characterized in that The thumb fixing member (3) includes: Connector (33), on which a slider I (34) is fixedly connected, and the slider I (34) slides on the angle adjuster (14); Thumb fixing plate (31), the top of which is fixedly connected to the bottom of the connector (33); Tightening component I (35), which is screwed onto the slider I and located opposite the connector (33), is used to tighten the thumb fixing plate (31) onto the angle adjuster (14); Tightening strap II (32) is fixedly connected to the thumb fixing plate (31) with several tightening straps II (32).

3. The post-operative immobilization spreader for surgery in the region of the metacarpophalangeal joint of the hand according to claim 1, characterized in that: The height adjustment mechanism (9) includes: A sleeve (91) has one end slidably connected to the palm fixing plate (1), and an adjusting rod (92) is slidably connected to the other end. Adjusting rod (92), the other end of which is connected to the angle adjuster (14); A screwing component (93) is screwed onto the outside of the sleeve (91). The screwing component (93) is used to tighten the sleeve (91) and the adjusting rod (92).

4. The post-operative immobilization spreader for surgery in the region of the metacarpophalangeal joint of the hand according to claim 3, characterized in that: The palm fixing plate (1) is provided with a sliding groove II (10), and the bottom end of the sleeve (91) is fixedly connected to a slider III (11), which slides in the sliding groove II (10).

5. The post-operative immobilization spreader for surgery in the region of the metacarpophalangeal joint of the hand according to claim 3, characterized in that: It also includes a telescopic connector (13), one end of which is fixed to the adjusting rod (92), and the other end of which is fixed to or inserted into the index finger fixing member.

6. The postoperative fixation and retractor for hand surgery in the thenar eminence region according to claim 1, characterized in that: The palm fixing plate (1) is provided with a sliding groove I (5), and the bottom of the index finger fixing piece is fixedly connected with a slider II (6), which slides in the sliding groove I (5).

7. The postoperative fixation and retractor for hand surgery in the thenar eminence region according to claim 2, characterized in that: The angle adjuster (14) has a through groove (16), and the slider I slides in the through groove (16).

8. The postoperative fixation and retractor for hand surgery in the thenar eminence region according to claim 2, characterized in that: The index finger fixing component is an index finger fixing plate (4), and the index finger fixing plate (4) is also provided with several tightening straps III (8). The cross-section of the thumb fixing plate (31) and the index finger fixing plate (4) is an arc-shaped structure.

9. The postoperative fixation and retractor for hand surgery in the thenar eminence region according to claim 1, characterized in that: The palm fixing plate (1) is provided with a tightening strap I (2) for fixing the palm.

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