Arm supporting device for hand surgical operation

Abstract

The invention discloses an arm supporting device for hand surgery. The arm supporting device comprises an outer frame, an arm supporting component and a driving mechanism. The arm supporting part comprises a clamping assembly and a mounting part; the two clamping assemblies are arranged on the same straight line, and the two clamping assemblies are arranged in a spaced mode. The clamping assembly is composed of a limiting piece and a rotating piece. Wherein the limiting piece is fixedly arranged at the top end of the mounting piece, and the rotating piece is rotatably arranged in the limiting piece; the bottom end of the mounting piece is connected with the outer frame; according to the device, flexible and accurate rotating operation can be achieved according to treatment requirements of different parts, specifically, the small arm and the large arm can be independently rotated, when an operation only needs to carry out fine treatment on a certain part of the small arm or the large arm, a doctor can independently rotate the corresponding part, overall adjustment is not needed, and the operation efficiency is greatly improved. And the accuracy and the efficiency of operation are greatly improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of surgical instruments, and in particular relates to an arm support device for hand surgery. Background Art

[0002] Hand surgery, due to its high precision and stringent requirements for stability, places extremely high standards on the surgical environment and auxiliary equipment. In traditional surgeries, the patient's arm is often fixed with a simple bracket or manual support. This can easily lead to shaking during the operation due to unconscious patient movement, muscle tremors, or fatigue of medical staff, increasing the risk of nerve and vascular damage, directly affecting the success rate of the operation and postoperative functional recovery. At the same time, with the acceleration of the digital transformation of medical care, the intelligent diagnosis and treatment ecosystem that combines online and offline operations is gradually penetrating into the management of the entire surgical process. Through the closed-loop linkage of preoperative AI image analysis, real-time intraoperative data monitoring, and postoperative remote rehabilitation guidance, doctors can obtain more accurate surgical decision-making support, and patients can also enjoy continuous and personalized diagnosis and treatment services.

[0003] In current hand surgery, arm supports are essential tools. These widely used devices focus on firmly securing and reliably supporting the arm, creating a stable operating environment.

[0004] However, in actual surgical scenarios, due to the complexity and diversity of the condition, targeted treatment is often required for different parts of the arm. However, existing arm support devices have obvious limitations. They lack the ability to flexibly rotate and cannot adjust the angle independently according to surgical needs. Doctors can only pause the surgical operation and adjust the angle of the arm support device themselves. This process is not only cumbersome but also has many hidden dangers. Especially during delicate surgical operations, the stability of the doctor's hand will inevitably be affected when adjusting his or her posture and the angle of the device. The slightest carelessness may lead to surgical risks, posing a potential threat to the patient's safety and surgical results. Summary of the Invention

[0005] The object of the present invention is to provide an arm support device for hand surgery to solve the problem that the existing arm support device proposed in the above background technology cannot be rotated according to different treatment parts and is inconvenient to operate.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: an arm support device for hand surgery, the arm support device comprising an outer frame, an arm support component, and a drive mechanism; The arm support component includes a clamping assembly and a mounting member; The clamping assembly is provided with two groups and is arranged on the same straight line, and the two groups of clamping assemblies are arranged at a distance; the clamping assembly is composed of a limiting member and a rotating member; Wherein, the limiting member is fixedly arranged at the top end of the mounting member, and the rotating member is rotatably arranged inside the limiting member; The bottom end of the mounting member is connected to the outer frame; The driving mechanism is placed below one side of the arm support component and is in transmission connection with the arm support component. The driving mechanism includes a transmission member and a locking member. Wherein, the transmission member is arranged adjacent to the arm support member, and when the transmission member moves in parallel with the straight line formed by the two groups of clamping components, it is respectively connected to any one or two groups of clamping components; The locking member is provided on the transmission member and limits the transmission member at a fixed point in the axial direction when the transmission member moves axially.

[0007] As a preferred technical solution of the present invention, the limiting members constituting the two groups of the clamping assemblies include a first support collar and a second support collar; the mounting members include a support rod, a sleeve, and a reinforcing rod; There are two support rods, which have two vertical sections and one horizontal section, and are respectively fixed below the support collar 1 and the support collar 2, and the sleeve is fixed at the bottom end of the support rod, that is, the sleeve is fixed at the vertical position of the bottom of the support rod, and the sleeve is slidably connected to the outer frame; The reinforcing rod is fixed vertically at a horizontal position of the support rod to achieve support and reinforcement of the support rod. The bottom end of the reinforcing rod is also fixed with a cylindrical structure with the same shape as the sleeve, and the reinforcing rod slides with the outer frame through the cylindrical structure.

[0008] As a preferred technical solution of the present invention, the rotating member includes a rotating ring cylinder, a reversing ring, an airbag, and a clamping plate; One end of the rotating ring tube extends to one end of the limiter and is wrapped around the outside of the limiter by bending. A circle of convex teeth is formed on the outer wall of the rotating ring tube when it is turned over to the outside of one end of the limiter, and the rest of the rotating ring tube is inside the limiter. Placement grooves are opened at equal angles on the outer surface of the rotating ring tube in the area of ​​the inner wall of the limiter, and an annular groove is opened at the other end of the rotating ring tube; One end of the reversal ring extends to the other end of the limiter and is also wrapped around the outside of the limiter by bending, and a circle of convex teeth is also formed on the outer wall of the flipped part, and its size, material, and arc length of two adjacent convex teeth are exactly the same as the convex teeth on the rotating ring tube, which is convenient for processing and production, and also convenient for later transmission; an arc plate is fixed at an equal angle at the innermost position of the bend of the reversal ring, and the entire reversal ring can be understood as an inverted "凵"-shaped structure, so as to achieve half-wrapping of the limiter, and the arc plate is arranged at the position of the inside of the limiter and the innermost bend of the reversal ring, and the arc plate fits in the The rotating ring cylinder is on the outer surface of the inner area of ​​the limiter and is arranged adjacent to the placement groove. A convex ring is fixed on the end surface of the other end of the reversing ring. The convex ring is inserted into the other end of the rotating ring cylinder, and the two are magnetically connected. The magnetic force connecting the convex ring and the rotating ring cylinder is greater than the force required for the reversing ring, the arc plate, and the convex ring to rotate. By plugging the two together, the connection can be achieved, reducing the risk of the two falling off. In order to ensure the connection between the two, the convex ring is made of magnetic material, and the rotating ring cylinder is made of metal material. The connection between the two is achieved by magnetic attraction. In the non-pulled state, the connection between the rotating ring cylinder and the reversing ring can be guaranteed; The airbag is arranged in the inner area after the rotating ring cylinder and the reversing ring are spliced ​​together, and the airbag is fixedly connected to the rotating ring cylinder but not to the reversing ring. Therefore, during the entire rotation, when the rotating ring cylinder rotates forward and reverse, it will drive the reversing ring to rotate forward and reverse synchronously. The clamping plate is arranged on the inner side of the placement groove, and the top of the clamping plate protrudes outwards and is engaged with the inner wall of the limiting member and is limited and locked in a single direction.

[0009] As a preferred technical solution in the present invention, a rotating shaft is fixed to the bottom end of the card plate, and the rotating shaft is rotatably arranged on the inner side of the rotating ring cylinder. Therefore, the card plate can rotate on the inner side of the rotating ring cylinder under the action of the rotating shaft. An elastic member is provided at the distance between the card plate and the rotating ring cylinder. The rotating shaft is arranged adjacent to the arc plate. Therefore, during the later rotation of the arc plate, the card plate can be pressed so that the card plate can rotate downward around the rotating shaft and squeeze the elastic member.

[0010] As a preferred technical solution of the present invention, the inner wall of the supporting collar is fixed with a slot at an equal angle, the slot is for the top of the card plate to be inserted into, and the width of the slot is greater than the maximum width of the card plate at the insertion position, thereby ensuring that the card plate can rotate after being pressed down by the arc plate and is limited by the slot; The inner wall of the supporting collar 2 is also provided with a groove having the same size, position and depth as the clamping groove.

[0011] As a preferred technical solution of the present invention, the transmission member of the driving mechanism includes a one-way driving rod 1 and a one-way driving rod 2; The two ends of the one-way driving rod are fixed with driving gears 1, and a long driving column is fixed on the outer end surface of one of the driving gears 1. The two driving gears 1 are respectively engaged with the convex teeth of the reversing ring on the supporting collar 1 and the supporting collar 2; The one-way drive rod 2 is arranged obliquely below the one-way drive rod 1, and a drive gear 2 is fixed at both ends of the one-way drive rod 2. A short drive column is fixed on the outer end surface of one of the drive gears 2, and the two drive gears 2 are respectively engaged with the convex teeth of the rotating ring cylinder on the support ring 1 and the support ring 2; Among them, the thickness of the one-way drive rod 1 and the one-way drive rod 2 are equal, and the thickness of the one-way drive rod 1 is twice the thickness of the convex teeth on the rotating ring cylinder and the reversing ring, and the one-way drive rod 1 and the one-way drive rod 2 themselves are each provided with three equidistant annular grooves near both ends; the distance between each two adjacent annular grooves is one and a half the thickness of the one-way drive rod 1.

[0012] As a preferred technical solution of the present invention, the locking member of the driving mechanism includes a vertical rod, a connecting block, and a connecting cylinder; The vertical rod is fixed on the inner side surface of the outer frame in a vertical shape; The connecting block is fixedly mounted on the top of the vertical pole in an integral manner. The connecting block is provided with through holes for the one-way driving rod 1 and the one-way driving rod 2 to pass through, and a middle hole is also provided in the middle of the connecting block. There are two connecting tubes, which are distributed opposite to each other. A limiting rod is fixed on the end face of each connecting tube. The limiting rod passes through the middle hole to the through hole. The end of the limiting rod is a hemispherical structure and is inserted into the annular groove on the one-way drive rod 1 and the one-way drive rod 2. A built-in spring is also fixed between the two connecting tubes.

[0013] As a preferred technical solution of the present invention, the one-way driving rod 1 and the one-way driving rod 2 are further sleeved with a limit plate and a limit spring; Wherein, the limit spring is arranged between one of the connecting blocks and the limit spring, and the limit spring is fixed on the one-way driving rod 1 and the one-way driving rod 2.

[0014] As a preferred technical solution of the present invention, the outer frame is a mounting frame, in which the main rod and the auxiliary rod of the cylindrical structure at the bottom end of the sleeve and the reinforcing rod are respectively installed; The vertical rod is arranged adjacent to the secondary rod.

[0015] As a preferred technical solution of the present invention, a medical air pump is also installed on the mounting frame. The medical air pump is arranged on the side of the main rod, wherein the medical air pump is connected to an external power supply through an electric wire, and the medical air pump has an air suction and exhaust port, and the exhaust port is used to extract and discharge the gas inside the air bag. The medical air pump is a conventional medical pump, and the models include; A through pipeline hole is provided on the side of the top and bottom of the support rod, and a trachea runs through the pipeline hole. One end of the trachea is connected to the air bag, and the other end is connected to the medical air pump.

[0016] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the device can realize flexible and precise rotation operation according to the treatment needs of different parts. Specifically, it can rotate the forearm and upper arm independently. When the operation only requires fine treatment of a certain part of the forearm or upper arm, the doctor can rotate the corresponding part alone without overall adjustment, which greatly improves the accuracy and efficiency of the operation. At the same time, the device also has the function of synchronous rotation of the forearm and upper arm. When it is necessary to perform continuous operation on the entire arm or adjust the surgical field of view, the doctor only needs simple operation to rotate the forearm and upper arm together, easily meeting the treatment needs of different positions. Moreover, the entire rotation operation process is simple and quick. The doctor does not need to spend too much time and energy on adjusting the device, and can devote himself to the surgical operation, effectively reducing the surgical risks caused by frequent adjustment of the device, and providing a strong guarantee for the smooth progress of hand surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of an arm support device for hand surgery; Figure 2 Rear view of an arm support device for hand surgery; Figure 3 It is a schematic diagram of the connection between the rotating ring and the reversing ring; Figure 4 for Figure 3 Schematic diagram of the state under partial expansion; Figure 5 It is a schematic diagram of the connection between the rotating ring and the clamping plate; Figure 6 Schematic diagram of the structure of the inversion ring; Figure 7 Schematic diagram of the connection between the support ring 1 and the clamping plate; Figure 8 Schematic diagram of the connection between the card plate and the convex ring; Figure 9 Schematic diagram of the structure of the driving mechanism; Figure 10 A schematic diagram of the connection between the connecting block and the locking member; Figure 11 Schematic diagram of the position of the ring groove on the one-way driving rod 2.

[0018] In the picture: 101. Mounting frame; 102. Auxiliary rod; 103. Main rod; 104, support rod; 104a, sleeve; 104b, reinforcement rod; 104c, pipeline hole; 105. trachea; 201, support ring 1; 201a, slot; 202, support ring 2; 203, rotating ring cylinder; 203a, placement groove; 204, reversing ring; 204a, arc plate; 204b, convex ring; 205, airbag; 206, card plate; 206a, rotating shaft; 207, elastic member; 301, one-way driving rod 1; 301a, driving gear 1; 301b, long driving column; 302, one-way driving rod 2; 302a, driving gear 2; 302b, annular groove; 302c, short driving column; 401, pole; 402, connecting block; 402a, through hole; 402b, middle hole; 403, limit plate; 404, limit spring; 405, connecting tube; 405a, limit rod; 406, built-in spring; 500. Medical air pump. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figures 1 to 11 , the present invention provides a technical solution: an arm support device for hand surgery, the arm support device comprising an outer frame, an arm support component, and a driving mechanism; The arm support component includes a clamping assembly and a mounting member; There are two groups of clamping components, which are arranged on the same straight line, and the two groups of clamping components are set at a distance; the clamping components are composed of a limiting part and a rotating part; The limiting member is fixed on the top of the mounting member, and the rotating member is rotatably arranged inside the limiting member; The bottom end of the mounting piece is connected to the outer frame; The driving mechanism is placed below one side of the arm support component and is in transmission connection with the arm support component. The driving mechanism includes a transmission member and a locking member. The transmission member is arranged adjacent to the arm support member, and when the transmission member moves in parallel with the straight line formed by the two groups of clamping components, it is respectively connected to any one or two groups of clamping components; The locking member is arranged on the transmission member and limits the transmission member at a fixed point in the axial direction when the transmission member moves axially.

[0021] In this embodiment, refer to Figure 1 and Figure 2 The limiting parts constituting the two sets of clamping assemblies include a support ring 1 201 and a support ring 2 202; the mounting parts are a support rod 104, a sleeve 104a, and a reinforcing rod 104b; As can be seen from the figure, there are two support rods 104, which have two vertical sections and one horizontal section, and are fixed below the support ring 1 201 and the support ring 2 202 respectively. The sleeve 104a is fixed at the bottom end of the support rod 104, that is, the sleeve 104a is fixed at the vertical part of the bottom of the support rod 104, and the sleeve 104a is slidably connected to the outer frame; The reinforcing rod 104b is vertically fixed at a horizontal position of the support rod 104 to strengthen the support rod 104. The bottom end of the reinforcing rod 104b is also fixed with a cylindrical structure with the same shape as the sleeve 104a, and the reinforcing rod 104b slides with the outer frame through the cylindrical structure.

[0022] In this embodiment, refer to Figure 3 、 Figure 4 、 Figure 5 The rotating parts include a rotating ring 203, a reversing ring 204, an air bag 205, and a clamping plate 206; One end of the rotating ring cylinder 203 extends to one end of the limiter and is wrapped around the outside of the limiter by bending. A circle of convex teeth is formed on the outer wall of the rotating ring cylinder 203 when it is turned over to the outside of one end of the limiter, and the rest of the rotating ring cylinder 203 is inside the limiter. A placement groove 203a is opened at an equal angle on the outer surface of the rotating ring cylinder 203 in the inner wall area of ​​the limiter, and an annular groove is opened at the other end of the rotating ring cylinder 203, that is, Figure 5 The position indicated by H; One end of the reversal ring 204 extends to the other end of the limiter and is also wrapped around the outside of the limiter by bending. A circle of convex teeth is also formed on the outer wall of the flipped part. Its size, material, and arc length of two adjacent convex teeth are exactly the same as the convex teeth on the rotating ring tube 203, which is convenient for processing and production, and also convenient for later transmission; an arc plate 204a is fixed at an equal angle at the innermost position of the bend of the reversal ring 204. Here, the entire reversal ring 204 can be understood as an inverted "凵"-shaped structure, so as to achieve half-wrapping of the limiter, and the arc plate 204a is arranged inside the limiter and at the position of the innermost bend of the reversal ring 204. The arc plate 204a fits the rotating ring tube 203 at the limiter. On the outer surface of the inner area, and adjacent to the placement groove 203a, a convex ring 204b is fixed to the other end surface of the reversing ring 204. The convex ring 204b is inserted into the other end of the rotating ring cylinder 203, and the two are magnetically connected. The magnetic force connecting the convex ring 204b and the rotating ring cylinder 203 is greater than the force required for the self-rotation of the reversing ring 204, the arc plate 204a, and the convex ring 204b. By plugging the two together, the connection can be achieved, reducing the risk of the two falling off. In order to ensure the connection between the two, the convex ring 204b is made of magnetic material, and the rotating ring cylinder 203 is made of metal. The connection between the two is achieved by magnetic attraction. In the non-pulled state, the connection between the rotating ring cylinder 203 and the reversing ring 204 can be guaranteed; The airbag 205 is arranged in the inner area after the rotating ring cylinder 203 and the reversing ring 204 are spliced ​​together. The airbag 205 is fixedly connected to the rotating ring cylinder 203 and is not fixed to the reversing ring 204. Therefore, during the entire rotation, when the rotating ring cylinder 203 rotates forward and reverse, it will drive the reversing ring 204 to rotate forward and reverse synchronously. The clamping plate 206 is disposed inside the placement groove 203 a , and the top of the clamping plate 206 protrudes outwards and engages with the inner wall of the limiting member to be limited and locked in a single direction.

[0023] In this embodiment, refer to Figure 7 and Figure 8 A rotating shaft 206a is fixed to the bottom end of the card plate 206, and the rotating shaft 206a is rotatably set on the inner side of the rotating ring cylinder 203. Therefore, the card plate 206 can rotate on the inner side of the rotating ring cylinder 203 under the action of the rotating shaft 206a. An elastic member 207 is provided at the distance between the card plate 206 and the rotating ring cylinder 203. The rotating shaft 206a is arranged adjacent to the arc plate 204a. Therefore, when the arc plate 204a rotates in the later stage, it can press the card plate 206, so that the card plate 206 can rotate downward around the rotating shaft 206a and squeeze the elastic member 207.

[0024] In this embodiment, refer to Figure 7The inner wall of the supporting collar 201 is fixed with a slot 201a at an equal angle, and the top of the card plate 206 is inserted into the slot 201a. The width of the slot 201a is greater than the maximum width of the card plate 206 at the insertion position, thereby ensuring that the card plate 206 can rotate after being pressed down by the arc plate 204a and is limited by the slot 201a. The inner wall of the second support ring 202 is also provided with a groove having the same size, position and depth as the slot 201a. Since the structures of the first support ring 201 and the second support ring 202 are exactly the same, only the first support ring 201 is illustrated in the figure.

[0025] In this embodiment, refer to Figure 1 、 Figure 2 、 Figure 9 , the transmission member of the driving mechanism includes a one-way driving rod 1 301 and a one-way driving rod 2 302; A driving gear 1 301a is fixedly provided at both ends of the one-way driving rod 1 301. A long driving column 301b is fixedly provided on the outer end surface of one of the driving gears 1 301a. The two driving gears 1 301a are respectively meshed with the convex teeth of the reversing ring 204 on the support collar 1 201 and the support collar 2 202. The second one-way drive rod 302 is disposed obliquely below the first one-way drive rod 301. A second drive gear 302a is fixedly disposed at each end of the second one-way drive rod 302. A short drive post 302c is fixedly disposed on the outer end surface of one of the second drive gears 302a. The two second drive gears 302a are respectively engaged with the protruding teeth of the rotating ring 203 on the first support collar 201 and the second support collar 202. Reference here Figure 9 and Figure 11 , wherein the thickness of the one-way drive rod 1 301 and the one-way drive rod 2 302 are equal, and the thickness of the one-way drive rod 1 301 is twice the thickness of the protruding teeth on the rotating ring cylinder 203 and the reversing ring 204, and the one-way drive rod 1 301 and the one-way drive rod 2 302 themselves are each provided with three equally spaced annular grooves 302b near both ends; the distance between each two adjacent annular grooves 302b is half the thickness of the one-way drive rod 1 301.

[0026] In this embodiment, refer to Figure 9 and Figure 10 , the locking parts of the driving mechanism include a vertical rod 401, a connecting block 402, and a connecting tube 405; The vertical rod 401 is fixed vertically on the inner side of the outer frame; The connecting block 402 is integrally fixed to the top of the vertical pole 401. The connecting block 402 is provided with a through hole 402a for the one-way driving rod 1 301 and the one-way driving rod 2 302 to pass through. A middle hole 402b is also provided in the middle of the connecting block 402. There are two connecting tubes 405, which are distributed opposite to each other. A limiting rod 405a is fixed on the end face of each connecting tube 405. The limiting rod 405a passes through the middle hole 402b to the through hole 402a. The end of the limiting rod 405a is a hemispherical structure and is inserted into the annular groove 302b on the one-way drive rod 1 301 and the one-way drive rod 2 302. A built-in spring 406 is also fixed between the two connecting tubes 405.

[0027] In this embodiment, refer to Figure 1 、 Figure 2 、 Figure 9 A limit plate 403 and a limit spring 404 are also sleeved on the one-way driving rod 1 301 and the one-way driving rod 2 302; Among them, the limit spring 404 is arranged between one of the connecting blocks 402 and the limit spring 404, and the limit spring 404 is fixed on the one-way driving rod 1 301 and the one-way driving rod 2 302. The function of the limit spring 404 is to remind medical staff when pushing the one-way driving rod 1 301 and the one-way driving rod 2 302 to avoid pushing too deep and causing the limit rod 405a to be completely separated from the annular groove 302b.

[0028] In this embodiment, refer to Figure 1 and Figure 2 The outer frame is the installation frame 101, and the main rod 103 and the auxiliary rod 102 that pass through the sleeve 104a and the bottom cylindrical structure of the reinforcing rod 104b are respectively installed in the installation frame 101. As can be seen from the figure, there is a hole on the bottom cylindrical structure of the main rod 103 and the reinforcing rod 104b. The hole is a screw hole. During installation, the auxiliary rod 102 and the main rod 103 are tightened by screwing in the bolt to achieve position limiting; The vertical pole 401 is disposed adjacent to the secondary pole 102 .

[0029] In this embodiment, refer to Figure 2 、 Figure 3 、 Figure 7 A medical air pump 500 is also mounted on the mounting frame 101 and is disposed on the side of the main rod 103. The medical air pump 500 is connected to an external power source via an electric wire and has a suction and exhaust port. The exhaust port is used to extract and discharge the gas inside the air bag 205. The medical air pump 500 is a conventional medical pump, and models include JHRD. A through pipeline hole 104c is provided on the side of the top and bottom of the support rod 104, and a trachea 105 passes through the pipeline hole 104c. One end of the trachea 105 is connected to the airbag 205, and the other end is connected to the medical air pump 500. The medical air pump 500 transmits the gas to the airbag 205 through the trachea 105. The raised airbag 205 realizes the clamping limit of the arm. In order to ensure that the trachea 105 is not affected by the rotation of the rotating ring cylinder 203 and the reversing ring 204, the overall maximum stretched length of the trachea 105 is greater than the length generated when the rotating ring cylinder 203 and the reversing ring 204 rotate. At the same time, the trachea 105 is a bellows structure as a whole, which can meet the angle changes during stretching and rotation.

[0030] The working principle of the arm support device is described as follows: Installation and debugging: The sleeve 104a and the bottom cylindrical structure of the reinforcing rod 104b are fixed on the auxiliary rod 102 by bolts; Limit clamping of the arm; The patient's arm is passed through the support ring 1 201 and the support ring 2 202 in sequence, and then the medical air pump 500 is started. The medical air pump 500 transmits gas to the air bag 205 through the trachea 105. The raised air bag 205 tightly clamps the patient's arm to achieve arm fixation; Intraoperative adjustment: When targeted treatment is needed for different parts of the arm, the patient's upper arm, lower arm, or entire arm is rotated as needed, which is achieved in the following three states: 1. Adjust the patient's forearm: Push the long drive post 301b so that the drive gear 1 301a equipped with the long drive post 301b meshes with the reversing ring 204 on the second support collar 202. The meshing length is half of the drive gear 1 301a, while the other half of the thickness of the drive gear 1 301a is outside the rotating ring 203 and does not mesh with the rotating ring 203. Meanwhile, the other drive gear 2 302a does not mesh with the rotating ring 203 on the first support collar 201. At this time, the long driving column 301b is rotated, and the long driving column 301b drives the driving gear 1 301a and the one-way driving rod 1 301 to rotate. At this time, the driving gear 1 301a drives the reversing ring 204 on the supporting ring 202 to rotate, and the reversing ring 204 synchronously drives the arc plate 204a to rotate, and the convex ring 204b rotates in the annular groove of the rotating ring cylinder 203, and the arc plate 204a will squeeze the card plate 206, so that the card plate 206 rotates around the rotating shaft 206a toward the inside of the placement groove 203a, and simultaneously squeezes the elastic member 207. The elastic member 207 will be compressed and stop deforming when it reaches its maximum deformation value, and at the same time, the card plate 206 will be separated from the card slot 201a. Due to the existence of the elastic member 207, the card plate 206 cannot fully enter the placement groove 203a. Therefore, the arc plate 204a will press against the card plate 206 under the rotation of the reversing ring 204, and the card plate 206 will be driven by the card plate 206. The rotating ring cylinder 203 rotates synchronously. It is worth noting that the force of the external continuous rotation of the reversing ring 204 is greater than the magnetic attraction between the convex ring 204b and the rotating ring cylinder 203, and the force required to rotate the rotating ring cylinder 203 clamping the patient's arm is also greater than the magnetic attraction between the convex ring 204b and the rotating ring cylinder 203. Therefore, in the initial stage of rotation, the arc plate 204a will rotate on the rotating ring cylinder 203, while the rotating ring cylinder 203 is in a stationary state. When the arc plate 204a is pressed against the clamping plate 206, it will drive the rotating ring cylinder 203 to rotate through the clamping plate 206. At this time, the airbag 205 in the rotating ring cylinder 203 and the reversing ring 204 will wrap the patient's forearm for a small range of rotation. When the long driving column 301b stops rotating, the elastic member 207 rebounds and lifts the clamping plate 206. At this time, the clamping plate 206 pushes the reversing ring 204 back to its original position, and the clamping plate 206 is clamped into the clamping groove 201a. Retract the long drive post 301b and push the short drive post 302c, so that the second drive gear 302a equipped with the short drive post 302c is meshed with the rotating ring cylinder 203 on the second support collar 202. The meshed length is half of the second drive gear 302a, while the other half of the thickness of the second drive gear 302a is outside the rotating ring cylinder 203 and does not mesh with the rotating ring cylinder 203. The other second drive gear 302a is not meshed with the rotating ring cylinder 203 on the first support collar 201. Rotate the short drive column 302c, the short drive column 302c drives the drive gear two 302a and the one-way drive rod two 302 to rotate, the rotation at this place is opposite to the rotation direction of the long drive column 301b, at this time the drive gear two 302a drives the rotating ring cylinder 203 on the support ring two 202 to rotate, because the magnetic attraction between the rotating ring cylinder 203 and the reverse rotating ring 204 is greater than the strength of the rotating reverse ring 204 itself, therefore the rotating ring cylinder 203 will drive the whole reverse rotating ring 204 to rotate synchronously through magnetic attraction, when the rotating ring cylinder 203 rotates, the clamping plate 206 will rotate around the rotating shaft 206a to realize the movement from the adjacent clamping groove 201a to another adjacent clamping groove 201a, at this time the air bag 205 in the rotating ring cylinder 203 and the reverse rotating ring 204 will wrap the small arm of the patient to rotate in a small range, but when it is reversed, it will be limited and clamped by the other side of the clamping plate 206, only when the short drive column 302c is pushed back and the long drive column 301b is pushed to the specified position, the long drive column 301b can realize reverse rotation; Second, adjust the patient's arm: Push the long drive column 301b, so that the drive gear one 301a without the long drive column 301b is engaged and connected with the reverse rotating ring 204 on the support ring one 201, and the length of the engagement and connection is half of the thickness of the drive gear one 301a, while the other drive gear two 302a is not engaged with the rotating ring cylinder 203 on the support ring two 202, then rotate the long drive column 301b, the subsequent operation is the same as the operation of adjusting the patient's arm; Pull back the long drive column 301b, and then push the short drive column 302c, so that the drive gear two 302a without the short drive column 302c is engaged and connected with the rotating ring cylinder 203 on the support ring one 201, and the length of the engagement and connection is half of the thickness of the drive gear two 302a, while the other drive gear two 302a is not engaged with the rotating ring cylinder 203 on the support ring two 202, then rotate the short drive column 302c, the subsequent operation is the same as the operation of adjusting the patient's arm; Third, adjust the patient's whole arm: Push the long drive column 301b, so that the drive gear one 301a with the long drive column 301b is engaged and connected with the reverse rotating ring 204 on the support ring two 202, and the length of the engagement and connection is equal to the thickness of the drive gear one 301a, while the other drive gear one 301a is engaged and connected with the reverse rotating ring 204 on the support ring one 201, and the length of the engagement and connection is half of the thickness of the drive gear one 301a, then rotate the long drive column 301b, the subsequent operation is the same as the operation of adjusting the patient's arm; Pull back the long drive column 301b, and then push the short drive column 302c, so that the second drive gear 302a equipped with the short drive column 302c is meshed with the rotating ring cylinder 203 on the second support collar 202, and the meshed connection is equal to the thickness of the second drive gear 302a. The other second drive gear 302a is meshed with the rotating ring cylinder 203 on the first support collar 201, and the meshed connection length is half the thickness of the second drive gear 302a. Then, rotate the short drive column 302c. The subsequent operation is the same as the operation of adjusting the patient's forearm. When pushing the one-way driving rod 2 302 and the one-way driving rod 1 301, they both pass through the compression built-in spring 406 of the connecting tube 405, and then snap into the other annular groove 302b due to the rebound of the built-in spring 406, thus achieving equidistant pushing. After completing the operation on the patient's arm, the medical air pump 500 extracts the gas in the air bag 205, and then removes the patient's arm from the support ring 1 201 and the support ring 2 202.

[0031] Although the embodiments of the present invention have been shown and described (see the above detailed description for details), it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An arm support device for hand surgery, characterized in that: The arm support device includes an outer frame, an arm support component, and a drive mechanism; The arm support component includes a clamping assembly and a mounting member; The clamping assembly is provided with two groups and is arranged on the same straight line, and the two groups of clamping assemblies are arranged at a distance; the clamping assembly is composed of a limiting member and a rotating member; Wherein, the limiting member is fixedly arranged at the top end of the mounting member, and the rotating member is rotatably arranged inside the limiting member; The bottom end of the mounting member is connected to the outer frame; The driving mechanism is placed below one side of the arm support component and is in transmission connection with the arm support component. The driving mechanism includes a transmission member and a locking member. Wherein, the transmission member is arranged adjacent to the arm support member, and when the transmission member moves in parallel with the straight line formed by the two groups of clamping components, it is respectively connected to any one or two groups of clamping components; The locking member is provided on the transmission member and limits the transmission member at a fixed point in the axial direction when the transmission member moves axially.

2. The arm support device for hand surgery according to claim 1, characterized in that: The limiting members constituting the two groups of the clamping assemblies include a first support collar (201) and a second support collar (202); the mounting members include a support rod (104), a sleeve (104a), and a reinforcing rod (104b); The support rods (104) are provided with two and are fixedly mounted below the support ring 1 (201) and the support ring 2 (202), respectively. The sleeve (104a) is fixedly mounted at the bottom end of the support rod (104), and the sleeve (104a) is slidably connected to the outer frame. The reinforcing rod (104b) is fixed vertically at a horizontal position of the supporting rod (104), and a cylindrical structure having the same shape as the sleeve (104a) is also fixed at the bottom end of the reinforcing rod (104b), and the reinforcing rod (104b) slides with the outer frame through the cylindrical structure.

3. The arm support device for hand surgery according to claim 2, characterized in that: The rotating member comprises a rotating ring cylinder (203), a reversing ring (204), an air bag (205), and a clamping plate (206); One end of the rotating ring cylinder (203) extends to one end of the limiting member and is wrapped around the outside of the limiting member by bending. A circle of convex teeth is formed on the outer wall of the rotating ring cylinder (203) when it is turned over to the outside of one end of the limiting member, and the rest of the rotating ring cylinder (203) is located inside the limiting member. A placement groove (203a) is provided at an equal angle on the outer surface of the rotating ring cylinder (203) in the inner wall area of ​​the limiting member, and an annular groove is provided at the other end of the rotating ring cylinder (203); One end of the reversing ring (204) extends to the other end of the limiting member and is also wrapped around the outside of the limiting member by bending, and a circle of convex teeth is also formed on the outer wall of the reversed part; an arc plate (204a) is fixedly provided at an equal angle at the innermost position of the bending part of the reversing ring (204), and the arc plate (204a) is fitted on the outer surface of the rotating ring cylinder (203) in the inner area of ​​the limiting member and is arranged adjacent to the placement groove (203a); a convex ring (204b) is fixedly provided on the end surface of the other end of the reversing ring (204), and the convex ring (204b) is inserted into the other end of the rotating ring cylinder (203), and the two are magnetically connected, and the magnetic force connecting the convex ring (204b) and the rotating ring cylinder (203) is greater than the force required for the reversing ring (204), the arc plate (204a), and the convex ring (204b) to rotate; The airbag (205) is arranged in the inner area after the rotating ring cylinder (203) and the reversing ring (204) are spliced ​​together, and the airbag (205) is fixedly connected to the rotating ring cylinder (203); The clamping plate (206) is arranged on the inner side of the placement groove (203a), and the top of the clamping plate (206) protrudes outwards and engages with the inner wall of the limiting member, and is limited and locked in a single direction.

4. The arm support device for hand surgery according to claim 3, characterized in that: A rotating shaft (206a) is fixedly provided at the bottom end of the clamping plate (206), and the rotating shaft (206a) is rotatably arranged inside the rotating ring cylinder (203). An elastic member (207) is provided at the distance between the clamping plate (206) and the rotating ring cylinder (203), and the rotating shaft (206a) is arranged adjacent to the arc plate (204a).

5. The arm support device for hand surgery according to claim 4, characterized in that: The inner wall of the supporting ring (201) is provided with a slot (201a) at an equal angle, the slot (201a) is for the top of the card plate (206) to be inserted into, and the width of the slot (201a) is greater than the maximum width of the inserted position of the card plate (206); The inner wall of the second supporting ring (202) is also provided with a groove having the same size, position and depth as the clamping groove (201a).

6. The arm support device for hand surgery according to claim 3, characterized in that: The transmission member of the driving mechanism includes a one-way driving rod 1 (301) and a one-way driving rod 2 (302); The two ends of the one-way driving rod (301) are fixed with driving gears (301a), and a long driving column (301b) is fixed on the outer end surface of one of the driving gears (301a). The two driving gears (301a) are respectively engaged with the convex teeth of the reversing ring (204) on the supporting collar (201) and the supporting collar (202); The one-way driving rod 2 (302) is arranged obliquely below the one-way driving rod 1 (301), and driving gears 2 (302a) are fixedly provided at both ends of the one-way driving rod 2 (302), and a short driving column (302c) is fixedly provided on the outer end surface of one of the driving gears 2 (302a), and the two driving gears 2 (302a) are respectively engaged with the convex teeth of the rotating ring cylinder (203) on the supporting ring 1 (201) and the supporting ring 2 (202); The thickness of the one-way drive rod 1 (301) and the one-way drive rod 2 (302) are equal, and the thickness of the one-way drive rod 1 (301) is twice the thickness of the convex teeth on the rotating ring cylinder (203) and the reversing ring (204), and the one-way drive rod 1 (301) and the one-way drive rod 2 (302) themselves are each provided with three equally spaced annular grooves (302b) near both ends; the distance between each two adjacent annular grooves (302b) is half the thickness of the one-way drive rod 1 (301).

7. The arm support device for hand surgery according to claim 6, characterized in that: The locking member of the driving mechanism comprises a vertical rod (401), a connecting block (402), and a connecting cylinder (405); The vertical rod (401) is fixedly mounted on the inner side surface of the outer frame in a vertical shape; The connecting block (402) is integrally fixed to the top of the vertical pole (401), and a through hole (402a) for the one-way driving rod (301) and the one-way driving rod (302) to pass through is provided on the connecting block (402), and a middle hole (402b) is also provided in the middle of the connecting block (402); Two connecting tubes (405) are provided and are distributed in opposite directions. A limiting rod (405a) is fixedly provided on the end face of each connecting tube (405). The limiting rod (405a) passes through the middle hole (402b) to the through hole (402a). The end of the limiting rod (405a) is a hemispherical structure and is inserted into the annular groove (302b) on the one-way driving rod (301) and the one-way driving rod (302). A built-in spring (406) is also fixedly provided between the two connecting tubes (405).

8. The arm support device for hand surgery according to claim 7, characterized in that: The one-way driving rod 1 (301) and the one-way driving rod 2 (302) are also sleeved with a limit plate (403) and a limit spring (404); The limiting spring (404) is arranged between one of the connecting blocks (402) and the limiting spring (404), and the limiting spring (404) is fixed on the one-way driving rod (301) and the one-way driving rod (302).

9. The arm support device for hand surgery according to claim 7, characterized in that: The outer frame is a mounting frame (101), and a main rod (103) and a secondary rod (102) are respectively installed in the mounting frame (101), which penetrate the sleeve (104a) and the bottom end cylindrical structure of the reinforcing rod (104b); The vertical rod (401) is arranged adjacent to the secondary rod (102).

10. The arm support device for hand surgery according to claim 9, characterized in that: A medical air pump (500) is also installed on the mounting frame (101), and the medical air pump (500) is arranged on the side of the main rod (103); A through pipeline hole (104c) is provided on the side surfaces of the top and bottom of the support rod (104), and an air tube (105) passes through the pipeline hole (104c). One end of the air tube (105) is connected to the air bag (205), and the other end is connected to the medical air pump (500).

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