Binding device for operating bed

Abstract

The invention discloses an operating bed binding device which comprises at least two binding belts for binding a patient on an operating bed and a screwing mechanism arranged on one side of the operating bed, the screwing mechanism comprises a mounting plate and at least two screwing devices mounted on the mounting plate, the mounting plate is fixed on flat iron on one side of the operating bed, and the screwing devices are arranged on the mounting plate. The screwing device comprises a winding drum, a worm wheel and a worm, the winding drum is connected with the worm wheel, the worm is meshed with the worm wheel, the two ends of the binding belt are a first end and a second end respectively, the second end is detachably installed on the other side, away from the screwing mechanism, of the operating bed, and the first end is fixed to the periphery of the winding drum. The winding drum is driven to rotate by rotating the worm, so that the bandage is wound or unwound through the winding drum.

Description

Technical Field

[0001] This invention relates to an operating table restraint device, belonging to the field of medical equipment technology. Background Technology

[0002] Patients typically need to lie on a special operating table during surgery or examination. To facilitate the procedure, they need to maintain a specific posture for an extended period. This posture cannot be maintained by the patient on their own, especially when the patient is under anesthesia or unconscious. Therefore, it is necessary to use straps to restrain the patient to the operating table.

[0003] To facilitate binding, existing operating tables are equipped with long, flat iron strips on both sides for easy wrapping and knotting of the bindings (the use of flat iron makes it easy to fix the bindings and other equipment). When in use, the two ends of the bindings are wrapped around the flat iron strips on both sides of the operating table and then tied with slip knots to bind the patient in a specific position to the bed.

[0004] The problem with existing technology is that it is difficult to make the tightness of the binding appropriate. If it is too loose, the posture cannot be effectively maintained. In particular, the operating table will be adjusted and rotated as needed during the operation, which can easily cause the binding to fail or even cause the patient to slip forward or backward and fall to the ground. If the binding is too tight for a long time, it will cause bruising and injury to the binding area. Once the binding strap is wrapped and knotted on the flat iron, it is difficult to adjust the tightness of the binding at will. Summary of the Invention

[0005] The problem this invention aims to solve is: how to conveniently bind a patient and conveniently adjust the tightness of the binding as needed.

[0006] To address the above problems, the technical solution proposed by this invention is:

[0007] An operating table binding device includes at least two binding straps for binding a patient to an operating table and a screwing mechanism located on one side of the operating table. The screwing mechanism includes a mounting plate and at least two screwdrivers mounted on the mounting plate. The mounting plate is fixed to a flat iron on one side of the operating table. Each screwdriver includes a drum, a worm gear, and a worm shaft. The drum is connected to the worm gear, and the worm gear meshes with the worm gear. The two ends of the binding straps are respectively end one and end two. End two is detachably mounted on the other side of the operating table away from the screwing mechanism. End one is fixed to the outer periphery of the drum. In application, the drum is rotated by rotating the worm shaft, causing the binding straps to be tightened or loosened by the drum.

[0008] The screwdriver also includes a synchronous rotating tube that can rotate around its own axis. The outer circumference of the synchronous rotating tube is provided with a synchronous groove along the axial direction. The inner wall of the drum is provided with a sliding protrusion. The drum is axially slidably fitted onto the outer circumference of the synchronous rotating tube. Its sliding protrusion is located in the synchronous groove and can slide in the synchronous groove. The turbine is fixed on the synchronous rotating tube. When the turbine drives the synchronous rotating tube to rotate, the sliding protrusion located in the synchronous groove can force the drum to rotate with the synchronous rotating tube.

[0009] The screwing mechanism also includes a common shaft, the two ends of which are fixed to the mounting plate. The synchronous rotating tubes of each screwdriver are fitted onto the common shaft and can rotate relative to the common shaft. The worm gear and the worm are mounted on the drive frame, which is fixed to the mounting plate.

[0010] The drum has limiting flanges at both ends, and a fastener is provided on the drum. A pressure post parallel to the drum is fixed inside the limiting flange at one end. There is a gap between the pressure post and the limiting flange at the other end, and a gap between the pressure post and the drum. Both gaps are slightly larger than the thickness of the binding tape end. The binding tape end has several eyelets arranged along its length. In application, the binding tape end is fastened to the fastener through the eyelets to be fixed on the drum.

[0011] The second end of the binding strap is provided with a clasp, which has a first locking post, a second locking post, a third locking post, a fourth locking post, a first locking opening between the first locking post and the second locking post, a second locking opening between the second locking post and the third locking post, and a third locking opening between the third locking post and the fourth locking post. The end of the second end of the binding strap passes through the first locking opening from below the first locking post, passes around the upper side of the second locking post and passes down through the second locking opening, passes around the lower side of the third locking post and passes up through the third locking opening, folds back and passes down through the first locking opening, and is then clamped between the binding strap body and the first locking post. The fourth locking post is connected to a flat iron on the other side of the operating table away from the screwing mechanism.

[0012] It also includes a linkage mechanism that enables the two ends of the binding strap to be wound and unwound synchronously. The linkage mechanism includes a flexible but constant-length guide tube and a core wire located inside the guide tube and capable of being pulled out inside the guide tube. The core wire is divided into a connecting end and a winding end. The guide tube and the core wire located inside the guide tube pass under the operating table. The winding end of the core wire is located on one side of the operating table where the twisting mechanism is located, and a winding tape connected to the winding end is provided on this side. A buttonhole is provided on the winding tape. A second buckle for fastening the winding tape and a second pressure post for pressing the winding tape are also added to the roll. The connecting end of the core wire is located on the other side of the operating table and is connected to the second end of the binding strap.

[0013] The linkage mechanism also includes a winding side frame and a connecting side frame for installing the winding end and connecting end of the core wire, respectively. The winding side frame is fixed on the mounting plate on one side of the operating table where the screwing mechanism is located, and the connecting side frame is fixed on the flat iron on the other side of the operating table.

[0014] The winding side frame has a first sliding rod and a first sliding sleeve fitted on the first sliding rod. The first sliding sleeve can slide axially on the first sliding rod but cannot rotate circumferentially. The winding end of the core wire is installed on the first sliding sleeve through a conduit at its end. The connecting side frame has a second sliding rod and a second sliding sleeve fitted on the second sliding rod. The second sliding sleeve can slide axially on the second sliding rod but cannot rotate circumferentially. The connecting end of the core wire is installed on the second sliding sleeve through a conduit at its end.

[0015] The sliding sleeve has vertical synchronizing arms at its front and rear ends. The lower end of the synchronizing arm is fixed to the sliding sleeve, and the upper end has an arc-shaped groove with an upward opening. The upper ends of the two synchronizing arms are respectively clamped on the outer sides of the front and rear ends of the drum and can slide back and forth with the drum. The arc-shaped grooves of the two synchronizing arms are fitted on the lower side of the synchronizing tube to prevent the sliding sleeve from rotating relative to the sliding rod. The synchronizing tube can rotate relative to the groove wall of the arc-shaped groove.

[0016] It also includes multiple strap guides for changing the direction of tension at both ends of the strap when the strap is pulled at an angle. The strap guide includes a bracket, a support shaft mounted on the bracket, and a guide roller with an annular guide groove that is mounted on the support shaft and can rotate.

[0017] Beneficial effects: Due to the use of a turbine and worm gear rotating mechanism, which is an automatic anti-reverse structure, the drum will not automatically unwind after the external force is stopped and the turbine is turned at any angle. The binding straps tightened by the drum will not automatically loosen. In other words, medical staff can release the straps simply by turning the worm gear to any angle. Compared with traditional surgery, where medical staff need to untie the knots and then tie them back up after adjusting the tightness, this operating table binding device makes it very simple for medical staff to adjust the tightness of the binding straps during surgery, and eliminates the risk of the patient slipping and falling off the bed. The simultaneous tightening or loosening of both ends of the binding straps prevents them from dragging and rubbing against the patient, thus avoiding injury and pain. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the operating table binding device described in Embodiment 1 being installed on the operating table;

[0019] Figure 2 This is a three-dimensional schematic diagram of how a patient in the first sleeping position is bound to an operating table using an operating table binding device, as described in Example 1.

[0020] Figure 3This is a three-dimensional schematic diagram of the screwing mechanism in the operating table binding device described in Embodiment 1;

[0021] Figure 4 This is a three-dimensional schematic diagram of the common shaft mounted on the mounting plate as described in Embodiment 1;

[0022] Figure 5 This is a three-dimensional schematic diagram of the synchronous rotating tube mounted on the common shaft as described in Embodiment 1;

[0023] Figure 6 This is a three-dimensional schematic diagram of the roll described in Embodiment 1;

[0024] Figure 7 This is a three-dimensional schematic diagram of the structural relationship between the turbine, worm gear, and synchronous rotor as described in Embodiment 1;

[0025] Figure 8 This is a three-dimensional schematic diagram of the structural relationship between the turbine, worm gear, synchronous rotary tube, and drum described in Embodiment 1;

[0026] Figure 9 This is a three-dimensional schematic diagram of how a patient in a second sleeping position is bound to an operating table using an operating table restraint device, as described in Example 1.

[0027] Figure 10 This is a three-dimensional schematic diagram of the strap guide described in Embodiment 1;

[0028] Figure 11 for Figure 9 A magnified view of a portion of the image;

[0029] Figure 12 This is a three-dimensional schematic diagram of the connection between the second end of the binding strap and its eye-shaped buckle as described in Embodiment 1;

[0030] Figure 13 This is a three-dimensional schematic diagram of Example 2, which illustrates the use of an operating table restraint device to restrain a patient in a second sleeping position on an operating table.

[0031] Figure 14 This is a three-dimensional schematic diagram of the linkage mechanism described in Embodiment 2;

[0032] Figure 15 This is a simplified cross-sectional view of the conduit and the core wire located inside the conduit as described in Embodiment 2;

[0033] Figure 16 This is a three-dimensional schematic diagram showing the connection relationship between the winding end and connecting end of the core wire and the winding tape and binding tape as described in Embodiment 2;

[0034] Figure 17 for Figure 13 A partially enlarged schematic diagram shows the installation of the wound end of the core wire on the fixing base.

[0035] Figure 18 for Figure 13 A partially enlarged schematic diagram shows the installation of the core wire connection end on the second mounting base;

[0036] Figure 19 A three-dimensional schematic diagram of the structural relationship between the winding side frame and the drum as described in Example 2;

[0037] Figure 20 A three-dimensional schematic diagram of the drum described in Embodiment 2 shows that a pressure post 2 and a fastener 2 are installed on the drum;

[0038] Figure 21 for Figure 12 A partially enlarged schematic diagram shows that the winding end of the core wire is fixed to the same drum on one side by both the winding tape and the binding tape.

[0039] In the diagram: 1. Twisting mechanism; 11. Mounting plate; 12. Twisting device; 121. Drum; 120. Winding groove; 1211. Fastener 1; 1212. Pressure column 1; 1213. Gap 1; 1214. Gap 2; 1215. Sliding convex part; 1216. Limiting flange; 1217. Fastener 2; 1218. Pressure column 2; 13. Drive frame; 131. Worm gear; 1311. Handle; 132. Turbine; 14. Synchronous rotating tube; 141. Synchronous sliding groove; 15. Common shaft; 16. Bearing; 2. Linkage mechanism; 21. Winding side frame; 211. Slide rod 1; 212. Sliding sleeve 1; 213. Synchronous arm; 2131. Arc-shaped groove; 214. Fixed seat 1. 2141. Insertion Hole 1; 22. Connecting Side Frame; 221. Slide Rod 2; 222. Slide Sleeve 2; 223. Fixing Base 2; 2231. Insertion Hole 2; 23. Conduit; 24. Core Wire; 241. Wrapping End; 2411. Wrapping Tape; 242. Connecting End; 3. Binding Tape Guide; 31. Bracket; 32. Support Shaft; 33. Guide Roller; 4. Binding Tape; 41. Buttonhole; 42. End 1; 43. End 2; 44. T-shaped Buckle; 441. First Locking Pillar; 442. Second Locking Pillar; 443. Third Locking Pillar; 444. Fourth Locking Pillar; 445. First Locking Cavity; 446. Second Locking Cavity; 447. Third Locking Cavity; 5. Operating Table; 51. Flat Iron. Detailed Implementation

[0040] The present invention will be further described below with reference to embodiments and accompanying drawings:

[0041] Example 1

[0042] like Figure 1 , 2As shown in Figures 3, 6, 7, and 8, an operating table binding device includes at least two binding straps 4 for binding a patient to an operating table 5 and a screwing mechanism 1 located on one side of the operating table 5. The screwing mechanism 1 includes a mounting plate 11 and at least two screwdrivers 12 mounted on the mounting plate 11. The mounting plate 11 is fixed to a flat iron 51 on one side of the operating table 5. The screwdrivers 12 include a drum 121, a turbine 132, and a worm gear 131. The drum 121 is connected to the turbine 132, and the worm gear 131 meshes with the turbine 132. The two ends of the binding straps 4 are respectively end 1 42 and end 2 43. End 2 43 is detachably mounted on the other side of the operating table 5 away from the screwing mechanism 1. End 1 42 is fixed to the outer periphery of the drum 121. In use, the drum 121 is driven to rotate by rotating the worm gear 131, so that the binding straps 4 are wound tightly or loosely by the drum 121. Because the turbine 132 and worm gear 131 work together in an automatic anti-reverse mechanism, when the drum 121 is wound to any angle and the external force is stopped from rotating the turbine 132, the drum 121 will not automatically unwind, and the binding strap 4 tightly wound by the drum 121 will not automatically loosen. In other words, medical staff can release the strap by rotating the worm gear 131 to any angle. Compared with the traditional surgical procedure where medical staff need to untie the knot when adjusting the tightness of the binding strap and then tie it again immediately after adjustment, the operating table binding device of this rotating mechanism 1 makes the operation of tightening and loosening the binding strap very simple for medical staff during surgery, and eliminates the risk of the patient slipping and falling off the bed.

[0043] The screwdriver 12 also includes a synchronous rotating tube 14 that can rotate around its own axis. The outer periphery of the synchronous rotating tube 14 is provided with a synchronous groove 141 along the axial direction. The inner wall of the drum 121 is provided with a sliding protrusion 1215. The drum 121 is axially slidably fitted onto the outer periphery of the synchronous rotating tube 14. Its sliding protrusion 1215 is located in the synchronous groove 141 and can slide within the synchronous groove 141. The turbine 132 is fixed on the synchronous rotating tube 14. When the turbine 132 drives the synchronous rotating tube 14 to rotate, the sliding protrusion 1215 located in the synchronous groove 141 can force the drum 121 to rotate with the synchronous rotating tube 14. In this way, it can ensure that the drum 121 rotates with the turbine 132, and also allow the drum 121 to slide back and forth to adapt to the change of the binding position of the strap 4 on the patient. At the same time, the position of the turbine worm gear is fixed, which facilitates the tightening and loosening operations.

[0044] like Figure 4 , 5 As shown, the screwing mechanism 1 also includes a common shaft 15, both ends of which are fixed to the mounting plate 11. The synchronous rotating tubes 14 of each screwdriver 12 are fitted onto the common shaft 15 and can rotate relative to the common shaft 15. The worm gear 132 and the worm 131 are mounted on the drive frame 13, which is fixed to the mounting plate 11. In this way, multiple screwdrivers 12 can be set on a single common shaft 15 to meet the requirements when multiple straps 4 are used to bind the patient.

[0045] like Figure 7 As shown, for ease of operation, a rocker handle 1311 is provided at the outer end of the worm gear 131.

[0046] like Figure 4 , 7 As shown, in order to ensure smooth rotation of the synchronous rotating tube 14, a bearing 16 is provided between the synchronous rotating tube 14 and the common shaft 15.

[0047] like Figure 6 As shown, the drum 121 has limiting flanges 1216 at both ends, so that the end 42 of the binding tape 4 is wound into the winding groove 120 formed between the two limiting flanges 1216.

[0048] like Figure 6 , 11 As shown, a buckle 1211 is provided on the roll 121, and a number of eyelets 41 are provided on the end 42 of the binding strap 4 along the length direction. When in use, the end 42 of the binding strap 4 is fastened to the buckle 1211 through the eyelets 41.

[0049] Furthermore, a pressure post 1212 parallel to the drum 121 is fixed to the inner side of the limiting flange 1216 at one end. The pressure post 1212 has a gap 1213 between itself and the limiting flange 1216 at the other end, and a gap 1214 between itself and the drum 121. Both gaps 1213 and 1214 are slightly larger than the thickness of the end 42 of the binding strap 4. In application, the end 42 of the binding strap 4 is slid from gap 1213 into gap 1214, and then the end 42 is fastened to the fastener 1211 through a buttonhole. Thus, due to the pressure of the pressure post 1212, the end 42 fastened to the fastener 1211 is less likely to slip off on its own.

[0050] Furthermore, such as Figure 1 , 12As shown, the end 43 of the binding strap 4 has a clasp 44, which has a first locking post 441, a second locking post 442, a third locking post 443, a fourth locking post 444, a first locking slot 445 between the first locking post 441 and the second locking post 442, a second locking slot 446 between the second locking post 442 and the third locking post 443, and a third locking slot 447 between the third locking post 443 and the fourth locking post 444. The end of the end 43 of the binding strap 4 passes through the first locking slot 445 from below the first locking post 441, passes through the second locking slot 446 from above the second locking post 442, passes through the third locking slot 447 from below the third locking post 443, folds back, passes through the first locking slot 445 from below, and is then clamped between the main body of the binding strap 4 and the first locking post 441. The fourth locking post 444 is connected to the flat iron 51 on the other side of the operating table 5 away from the screwing mechanism 1. The eye-shaped buckle 44 serves two purposes: firstly, it allows for manual adjustment of the length of the folded-back end 43 to adjust the length of the main body of the binding strap 4. This allows for a large adjustment range, making it suitable for adjusting lengths with significant differences when using different binding methods, thus eliminating the need to rely entirely on the roll 121 for adjustment; secondly, it allows the binding strap 4 to be removed from the eye-shaped buckle 44 for cleaning and disinfection.

[0051] like Figure 9 , 10 As shown, the operating table binding device also includes multiple binding guides 3 for changing the tension direction at both ends of the binding strap 4 when it is pulled at an angle. Each binding guide 3 includes a bracket 31, a support shaft 32 mounted on the bracket 31, and a guide roller 33 with an annular guide groove that is rotatable and mounted on the support shaft 32. The guide roller 33 can adapt to the tension direction of the binding strap 4, ensuring that the binding strap 4 wound in the winding groove 120 will not slip when the drum 121 rotates, and also making the binding strap 4, when its binding direction is changed, pull more smoothly when it is tightened.

[0052] Example 2

[0053] like Figure 13-21 As shown, its difference from Embodiment 1 lies in that: the operating table binding device also includes a linkage mechanism 2 that enables the two ends of the binding band 4 to be rolled up and unrolled simultaneously. The linkage mechanism 2 includes a flexible but constant-length guide tube 23 and a core wire 24 located inside the guide tube 23 and capable of being pulled out inside the guide tube 23. The core wire 24 is divided into a connecting end 242 and a winding end 241 (see...). Figure 13-15 The conduit 23 and the core wire 24 located inside the conduit 23 pass under the operating table. The winding end 241 of the core wire 24 is located on one side of the operating table 5 where the screwing mechanism 1 is located, and a winding tape 2411 connected to the winding end 241 is provided on this side. A buttonhole 41 is provided on the winding tape 2411. The aforementioned roller 121 is also provided with a second buckle 1217 for fastening the winding tape 2411 and a second pressure post 1218 for pressing down the winding tape 2411 (see...). Figure 20 , 21 The core wire 24 connecting end 242 is located on the other side of the operating table 5 and is connected to the second end 43 of the binding strap 4. When using the eye-shaped buckle 44 described in Embodiment 1, the core wire 24 connecting end 242 is actually connected to the eye-shaped buckle 44 (see...). Figure 16 In application, end 42 of the binding strap 4 is directly fixed to the drum 121 of the screwing mechanism 1 using buckle 1211. End 43 is connected to the connecting end 242 of the core wire 24 via buckle 44. The winding tape 2411 of the winding end 241 of the core wire 24 is also fixed to the same drum 121 of the screwing mechanism 1 using buckle 1217 and pressure post 1218. Rotating the drum 121 can simultaneously tighten or loosen both ends of the binding strap 4, thereby adjusting the tightness of the binding strap 4 on the patient (see [link]). Figure 13 and Figure 21 In this way, when adjusting the tightness, the strap 4 will not rub against the patient, thus preventing injury and pain.

[0054] The conduit 23 and the core wire 24 located inside the conduit 23 and capable of being pulled within the conduit 23 are actually commercially available tricycle brake cables, which are existing technology products.

[0055] The linkage mechanism 2 also includes a winding side frame 21 and a connecting side frame 22 for mounting the winding end 241 and connecting end 242 of the core wire 24, respectively. The winding side frame 21 is mounted on the mounting plate 11 on one side of the operating table where the screwing mechanism 1 is located, and the connecting side frame 22 is mounted on the flat iron 51 on the other side of the operating table.

[0056] The winding side frame 21 has a sliding rod 211 and a sliding sleeve 212 fitted on the sliding rod 211. The sliding sleeve 212 can slide axially on the sliding rod 211 but cannot rotate circumferentially. The winding end 241 of the core wire 24 is mounted on the sliding sleeve 212 through the conductor tube 23 at its end. The connecting side frame 22 has a sliding rod 221 and a sliding sleeve 222 fitted on the sliding rod 221. The sliding sleeve 222 can slide axially on the sliding rod 221 but cannot rotate circumferentially. The connecting end 242 of the core wire 24 is mounted on the sliding sleeve 222 through the conductor tube 23 at its end (see...). Figure 14 , 16 (17, 18, 19). The sliding sleeve 222 can slide axially on the sliding rod 221 to adapt to changes in the binding position of the binding strap 4 on the patient. The sliding sleeve 222 cannot rotate circumferentially on the sliding rod 221 to ensure that the tube holes at both ends of the guide tube 23 always face upward, so that the connection end 242 of the core wire can be connected to the binding strap 4 above, and the winding end 241 can be connected to the drum 121 above.

[0057] Vertical synchronizing arms 213 are provided at the front and rear ends of the sliding sleeve 212. The lower end of the synchronizing arm 213 is fixed to the sliding sleeve 212, and the upper end is provided with an upward-opening arc-shaped groove 2131. The upper ends of the two synchronizing arms 213 are respectively clamped on the outer sides of the front and rear ends of the drum 121, so that the sliding sleeve 212 can slide back and forth with the drum 121. The arc-shaped grooves 2131 of the two synchronizing arms 213 are fitted on the lower side of the synchronizing tube 14 to prevent the sliding sleeve 212 from rotating relative to the sliding rod 211. The synchronizing tube 14 can rotate relative to the groove wall of the arc-shaped groove 2131 (see...). Figure 17 , 21 ).

[0058] The linkage mechanism 2 also includes a fixing seat 214 and a fixing seat 223 respectively provided on the sliding sleeve 212 and the sliding sleeve 222 for fixing the two ends of the wire tube 23. The fixing seat 214 and the fixing seat 223 are respectively provided with vertical insertion holes 2141 and 2231 for inserting the two ends of the wire tube 23. In application, the two ends of the wire tube 23 are inserted and fixed in the insertion holes 2141 and 2231 respectively (see 14, 17, 18).

[0059] The above embodiments are only used to describe the present invention more clearly, and should not be regarded as limiting the scope of protection covered by the present invention. Any equivalent modifications should be regarded as falling within the scope of protection covered by the present invention.

Claims

1. A surgical bed restraint device, characterized in that: The device includes at least two straps (4) for binding the patient to the operating table (5) and a screwing mechanism (1) located on one side of the operating table (5). The screwing mechanism (1) includes a mounting plate (11) and at least two screwdrivers (12) mounted on the mounting plate (11). The mounting plate (11) is fixed to a flat iron (51) on one side of the operating table (5). The screwdrivers (12) include a drum (121), a turbine (132), and a worm gear (131). The drum (121) and the turbine... (132) Connection, the worm (131) meshes with the turbine (132), the two ends of the strap (4) are respectively end one (42) and end two (43), the end two (43) is detachably installed on the other side of the operating table (5) away from the screwing mechanism (1), the end one (42) is fixed on the outer periphery of the drum (121), when in use, the drum (121) is driven to rotate by rotating the worm (131), so that the strap (4) is wound tight or loosened by the drum (121).

2. The operating table restraint device according to claim 1, characterized in that: The screwdriver (12) also includes a synchronous rotating tube (14) that can rotate around its own axis. The outer periphery of the synchronous rotating tube (14) is provided with a synchronous groove (141) along the axial direction. The inner wall of the drum (121) is provided with a sliding protrusion (1215). The drum (121) is axially slidably fitted on the outer periphery of the synchronous rotating tube (14). Its sliding protrusion (1215) is located in the synchronous groove (141) and can slide in the synchronous groove (141). The turbine (132) is fixed on the synchronous rotating tube (14). When the turbine (132) drives the synchronous rotating tube (14) to rotate, the sliding protrusion (1215) located in the synchronous groove (141) can force the drum (121) to rotate with the synchronous rotating tube (14).

3. The operating table restraint device according to claim 2, characterized in that: The screwing mechanism (1) also includes a common shaft (15), the two ends of which are fixed on the mounting plate (11). The synchronous rotating tubes (14) of each screwdriver (12) are mounted on the common shaft (15) and can rotate relative to the common shaft (15). The turbine (132) and worm (131) are mounted on the drive frame (13), which is fixed on the mounting plate (11).

4. The operating table restraint device according to any one of claims 1, characterized in that: The drum (121) has limiting flanges (1216) at both ends. A fastener (1211) is provided on the drum (121). A pressure post (1212) parallel to the drum (121) is fixed on the inner side of the limiting flange (1216) at one end. The pressure post (1212) has a gap (1213) with the limiting flange (1216) at the other end and a gap (1214) with the drum (121). Both gaps (1213) and gap (1214) are slightly larger than the thickness of the end of the binding strap (42). The end of the end (42) has several eyelets (41) arranged along the length direction. When in use, the end of the binding strap (4) (42) is fastened to the fastener (1211) through the eyelets (41) to achieve fixation on the drum (121).

5. The operating table restraint device according to claim 1, characterized in that: The binding strap (4) has a buckle (44) at its end 2 (43). The buckle (44) has a first locking post (441), a second locking post (442), a third locking post (443), a fourth locking post (444), a first locking slot (445) between the first locking post (441) and the second locking post (442), a second locking slot (446) between the second locking post (442) and the third locking post (443), and a third locking slot (447) between the third locking post (443) and the fourth locking post (444). The end of the second end (43) of the binding strap (4) passes through the first lock hole (445) from the bottom of the first lock post (441), passes through the second lock hole (446) from the top of the second lock post (442), passes through the third lock hole (447) from the bottom of the third lock post (443), folds back, passes through the first lock hole (445) from the bottom, and is then clamped between the binding strap (4) body and the first lock post (441). The fourth lock post (444) is connected to the flat iron (51) on the other side of the operating table (5) away from the screwing mechanism (1).

6. The operating table restraint device according to claim 4, characterized in that: It also includes a linkage mechanism (2) that enables the two ends of the binding strap (4) to be rolled up and unrolled simultaneously. The linkage mechanism (2) includes a flexible but constant-length guide tube (23) and a core wire (24) located inside the guide tube (23) and capable of being pulled out inside the guide tube (23). The core wire (24) is divided into a connecting end (242) and a winding end (241). The guide tube (23) and the core wire (24) located inside the guide tube (23) pass under the operating table. The winding end (241) of the core wire (24) is located at the spiral The twisting mechanism (1) is located on one side of the operating table (5), and a winding tape (2411) connected to the winding end (241) is provided on this side. A buttonhole (41) is provided on the winding tape (2411). A second buckle (1217) for fastening the winding tape (2411) and a second pressure post (1218) for pressing the winding tape (2411) are also provided on the roller (121). The connecting end (242) of the core wire (24) is located on the other side of the operating table (5) and is connected to the end (43) of the binding tape (4).

7. The operating table restraint device according to claim 6, characterized in that: The linkage mechanism (2) also includes a winding side frame (21) and a connecting side frame (22) for installing the winding end (241) and connecting end (242) of the core wire (24), respectively. The winding side frame (21) is fixed on the mounting plate (11) on one side of the operating table where the screwing mechanism (1) is located, and the connecting side frame (22) is fixed on the flat iron (51) on the other side of the operating table.

8. The operating table restraint device according to claim 7, characterized in that: The winding side frame (21) has a sliding rod (211) and a sliding sleeve (212) fitted on the sliding rod (211). The sliding sleeve (212) can slide axially on the sliding rod (211) but cannot rotate circumferentially. The winding end (241) of the core wire (24) is installed on the sliding sleeve (212) through the wire tube (23) at its end. The connecting side frame (22) has a sliding rod (221) and a sliding sleeve (222) fitted on the sliding rod (221). The sliding sleeve (222) can slide axially on the sliding rod (221) but cannot rotate circumferentially. The connecting end (242) of the core wire (24) is installed on the sliding sleeve (222) through the wire tube (23) at its end.

9. The operating table restraint device according to claim 8, characterized in that: The sliding sleeve (212) has vertical synchronizing arms (213) at its front and rear ends respectively. The lower end of the synchronizing arm (213) is fixed to the sliding sleeve (212), and the upper end is provided with an arc-shaped groove (2131) with an upward opening. The upper ends of the two synchronizing arms (213) are respectively clamped on the outer side of the front and rear ends of the drum (121) and can slide back and forth with the drum (121). The arc-shaped groove (2131) of the two synchronizing arms (213) is sleeved on the lower side of the synchronizing tube (14) to prevent the sliding sleeve (212) from rotating relative to the sliding rod (211). The synchronizing tube (14) can rotate relative to the groove wall of the arc-shaped groove (2131).

10. The operating table restraint device according to claim 4, characterized in that: It also includes multiple strap guides (3) for changing the tension direction at both ends of the strap (4) when the strap (4) is pulled diagonally. The strap guide (3) includes a bracket (31), a support shaft (32) provided on the bracket (31), and a guide roller (33) with an annular guide groove that is mounted on the support shaft (32) and can rotate.

Images