Ground magnetic attraction detector for operating room

Abstract

The invention relates to the technical field of magnetic attraction seeking instruments, in particular to an operating room ground magnetic attraction seeking instrument. The device comprises a head assembly, a rod assembly is arranged below the head assembly, a transmission assembly is connected below the rod assembly, a tooth driving assembly is arranged in the transmission assembly, and a magnetic attraction assembly is arranged below the tooth driving assembly. An upper bevel gear is driven by a motor to rotate, a lower bevel gear is driven by the upper bevel gear to rotate, and then a first sliding plate, a second sliding plate and a third sliding plate are pushed out of the interior of the shell step by step, so that the exploring instrument can go deep into the deep position of a gap, and the exploring efficiency of the exploring instrument on metal parts is improved; meanwhile, through the meshing relation between a fourth rack and a half gear, the half gear drives a swing arm to swing to be unfolded when sliding, so that the exploration area of the swing arm is increased, and the exploration efficiency is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of magnetic finders, in particular to a magnetic finder for the floor of an operating room. Background Art

[0002] During routine operating room work, suture needles or small metal parts may occasionally be lost. This can potentially leave surgical foreign objects in the body cavity, potentially causing varying degrees of iatrogenic harm to the patient. Therefore, operating room protocols clearly stipulate that whenever such an incident occurs, the operation will be suspended, and all staff involved in the search for the lost needle or small metal part will participate. While radiography can be used to explore and confirm the location within the body cavity, outside the cavity, personnel often rely on visual inspection to search the entire space and floor during surgery, which is inefficient and increases the difficulty of the operation. Due to the large number of medical devices in the operating room, dropped parts can easily fall into the gaps between the equipment and the floor. In this situation, the equipment must be moved or other tools must be used to remove the part. In the case of large equipment, moving the part or removing it from the gap can be difficult. Inefficient searching inevitably prolongs the surgical pause, potentially leading to adverse effects on the patient, such as prolonged anesthesia, increased medication use, prolonged body pressure, increased incidence of hypothermia, and increased risk of infection. Summary of the Invention

[0003] The purpose of the present invention is to provide an operating room floor magnetic search device to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, a magnetic search device for the floor of an operating room is provided, comprising a head assembly, a motor fixedly installed inside the head assembly, a rod assembly arranged below the head assembly, the motor drives the rod assembly to rotate, a transmission assembly is connected below the rod assembly, and the rod assembly drives the transmission assembly to rotate when it rotates, and is characterized in that a tooth drive assembly is arranged inside the transmission assembly, the motor drives the rod assembly, the rod assembly rotates and pushes the tooth drive assembly out from the inside of the transmission assembly step by step, when the tooth drive assembly needs to be retracted, the extended tooth drive assembly is retracted through the transmission assembly, a magnetic assembly is arranged below the tooth drive assembly, the magnetic assembly adsorbs metal parts, the tooth drive assembly pushes the magnetic assembly out from the inside of the transmission assembly and unfolds, and when the magnetic assembly contracts, it absorbs and squeezes the metal parts, so that the metal parts move closer to the center of the magnetic assembly.

[0005] As a further improvement of the present technical solution, the gear drive assembly includes a first slide, a tooth plate is installed on the upper side of the first slide, and a first gear is rotatably installed below the first slide. The sliding of the first slide drives the first gear to slide, and a first rack is engaged with one side of the first gear. The position of the first rack is fixed, and a second slide is slidingly arranged below the first gear. The upper part of the second slide is meshed with the first gear through the tooth plate, and the rotation of the first gear pushes the second slide to slide toward the outside of the transmission assembly, and a second gear is rotatably installed below the second slide. The sliding of the second slide drives the second gear to slide, and a second rack is engaged with one side of the second gear. The position of the second rack is fixed, and a third slide is slidingly arranged below the second gear, and the upper part of the third slide is meshed with the tooth plate and the second gear. The rotation of the second gear pushes the third slide to slide toward the outside of the transmission assembly.

[0006] As a further improvement of the present technical solution, two half gears are rotatably installed under the third slide, and a magnetic search block is provided between the two half gears. The magnetic search block searches for metal parts, and the top of the magnetic search block is fixedly connected to the third slide. A swing arm is fixedly installed under the half gear, and a gear is provided on the side wall of the half gear near the magnetic search block. A fourth rack is provided on both sides of the magnetic search block. The fourth rack is engaged with the half gear through the tooth plate. The third slide slides toward the outside of the transmission assembly, driving the gear of the half gear to engage with the tooth plate of the fourth rack, thereby driving the half gear to rotate, so that the two swing arms are away from each other at one end of the half gear.

[0007] As a further improvement of this technical solution, the transmission assembly includes a shell, the first rack and the second rack are fixedly mounted on the side wall of the shell, the first slide, the second slide and the third slide slide between the side walls of the shell, and the fourth rack is fixedly mounted on the bottom of the shell.

[0008] As a further improvement of the present technical solution, a transmission gear is rotatably installed at the bottom of the shell, and a telescopic rack is slidably installed on one side of the transmission gear. A tooth plate is provided on the side where the magnetic search block and the telescopic rack are close to each other. The magnetic search block and the telescopic rack slide alternately at the bottom of the shell through the meshing transmission gear, and the telescopic rack is squeezed into the interior of the shell, driving the magnetic search block to slide into the interior of the shell.

[0009] As a further improvement of this technical solution, a lower bevel gear is rotatably installed between the side walls of the transmission assembly. When the lower bevel gear rotates, it pushes the first slide to slide. One side of the lower bevel gear is engaged with the first slide. One side of the lower bevel gear is engaged with an upper bevel gear. When the upper bevel gear rotates, it drives the lower bevel gear to rotate.

[0010] As a further improvement of this technical solution, the rod assembly includes an outer rod, the upper end of which is fixedly connected to the head assembly, an inner rod is provided inside the outer rod, and the upper end of the inner rod is fixedly connected to the rotating shaft of the motor.

[0011] As a further improvement of the present technical solution, a concave connecting column is inserted into the lower end of the inner rod, and a plurality of wedge-shaped grooves are provided in the lower annular array of the concave connecting column. A convex connecting column is provided at the lower end of the concave connecting column, and a plurality of wedge blocks are provided in the upper annular array of the convex connecting column. When the inner rod rotates clockwise, the wedge blocks are engaged in the wedge-shaped grooves, so that the concave connecting column drives the convex connecting column to rotate, and the lower end of the convex connecting column is fixedly connected to the upper bevel gear. When the convex connecting column rotates clockwise, it pushes the first slide plate to slide to the outside of the shell through the lower bevel gear. When the concave connecting column rotates counterclockwise, it rotates and separates from the convex connecting column.

[0012] As a further improvement of the present technical solution, the bottom of the outer rod is rotatably connected to a connecting piece, the connecting piece is fixedly connected to the shell, a ratchet ring is fixedly connected to the top of the connecting piece, a plurality of wedge-shaped protrusions are provided in a circular array on the inner side wall of the ratchet ring, and a pawl is slidably installed on the side wall of the inner rod near the ratchet ring. When the pawl rotates counterclockwise, it engages with the wedge of the ratchet ring, and when the pawl rotates clockwise, it separates from the ratchet ring.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. In the operating room floor magnetic finder, the upper bevel gear is driven to rotate by the motor, and the lower bevel gear is driven to rotate by the upper bevel gear, and then the first slide, the second slide and the third slide are pushed out from the inside of the shell step by step, so that the finder can penetrate deep into the gap, thereby improving the finder's efficiency in finding metal parts. At the same time, through the meshing relationship between the fourth rack and the half gear, the half gear drives the swing arm to swing to unfold when sliding, thereby increasing the search area of the swing arm and effectively improving the search efficiency.

[0015] 2. In the operating room floor magnetic finder, the pawl slides in the ratchet ring, so that the inner rod drives the ratchet ring to rotate when it rotates counterclockwise, and then drives the shell to rotate through the connecting part, so that the finder can rotate in the gap, thereby searching for metal parts in multiple directions, effectively improving the efficiency of searching for metal parts.

[0016] 3. In the operating room floor magnetic finder, after the finder is used, the telescopic rack is pushed toward the inside of the shell, so that the magnetic finder block is retracted toward the inside of the shell, thereby driving the first slide, the second slide and the third slide to retract inside the shell, effectively reducing the volume of the finder, saving floor space, and avoiding the finder from affecting the movement of medical staff due to its large size and length when idle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic cross-sectional view of the rod assembly structure of the present invention;

[0019] Figure 3 This is one of the schematic cross-sectional views of the transmission assembly structure of the present invention;

[0020] Figure 4 This is the second schematic cross-sectional view of the transmission assembly structure of the present invention;

[0021] Figure 5 This is a schematic diagram of the magnetic attraction component of the present invention being unfolded;

[0022] Figure 6 This is a closed schematic diagram of the magnetic attraction component of the present invention;

[0023] Figure 7 It is a schematic diagram of the exploded structure of the gear drive assembly of the present invention;

[0024] Figure 8 It is a bottom view schematic diagram of the magnetic attraction component structure of the present invention;

[0025] Figure 9 This is one of the internal connection diagrams of the rod assembly of the present invention;

[0026] Figure 10 This is the second schematic diagram of the internal connection of the rod assembly of the present invention.

[0027] The meaning of each number in the figure is:

[0028] 1. Head assembly;

[0029] 2. Rod assembly; 21. Outer rod; 22. Inner rod; 221. Ratchet; 23. Female connecting post; 24. Male connecting post; 25. Connector; 26. Ratchet ring;

[0030] 3. Transmission assembly; 31. Housing; 32. Lower bevel gear; 33. Upper bevel gear; 34. Telescopic rack; 35. Transmission gear; 36. Fourth rack;

[0031] 4. Gear drive assembly; 41. First slide; 42. First gear; 43. First rack; 44. Second slide; 45. Second gear; 46. Second rack; 47. Third slide;

[0032] 5. Magnetic assembly; 51. Swing arm; 52. Magnetic search block; 53. Half gear. DETAILED DESCRIPTION

[0033] 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.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0035] Example 1

[0036] See also Figures 1-10As shown, the purpose of this embodiment is to provide an operating room floor magnetic search instrument, including a head assembly 1, a motor is fixedly installed inside the head assembly 1, a rod assembly 2 is arranged below the head assembly 1, and the motor drives the rod assembly 2 to rotate, so that the search instrument can search for metal parts in different directions, and a transmission assembly 3 is connected below the rod assembly 2. When the rod assembly 2 rotates, it drives the transmission assembly 3 to rotate, thereby searching for gaps in different positions, effectively improving the efficiency of searching for metal parts, and a gear drive assembly 4 is arranged inside the transmission assembly 3. When the motor rotates, the motor's rotating shaft drives the rod assembly 2 to push the gear drive assembly 4 out of the interior of the transmission assembly 3 step by step, so that the search instrument can search the depth of the gap and absorb the metal parts deep in the gap, avoiding the need for medical staff to bend over significantly to remove metal parts in the gap. The tooth drive assembly 4 is retracted through the transmission assembly 3 to avoid tripping medical staff due to its large size and length when the finder is idle. A magnetic component 5 is provided under the tooth drive assembly 4, which adsorbs metal parts through the magnetic component 5. When the magnetic component 5 shrinks, the adsorbed metal parts are taken out, and the tooth drive assembly 4 pushes the magnetic component 5 out of the inside of the transmission assembly 3 and unfolds it. The unfolded magnetic component 5 increases the search area for metal parts, thereby improving the search efficiency for metal parts. When the magnetic component 5 shrinks, it adsorbs and squeezes the metal parts, so that the metal parts are brought closer to the center of the magnetic component 5, thereby improving the search efficiency and preventing the metal parts from falling when taken out, thereby ensuring the use effect of the finder.

[0037] The gear drive assembly 4 includes a first slide 41, and a toothed plate is installed on the upper side of the first slide 41, which pushes the first slide 41 to slide through the toothed plate, and a first gear 42 is rotatably installed under the first slide 41, and the first gear 42 is driven to slide by the sliding of the first slide 41. A first rack 43 is engaged with one side of the first gear 42, so that the first gear 42 rotates while sliding outward from the inside of the transmission assembly 3. The transmission assembly 3 includes a housing 31, and the first rack 43 is fixedly mounted on the side wall of the housing 31. A second slide 44 is slidably provided below the first gear 42, and the upper side of the second slide 44 is engaged with the first gear 42 through the toothed plate, and the rotation of the first gear 42 pushes the second slide 44 to slide toward the outside of the transmission assembly 3, and the lower side of the second slide 44 The second gear 45 is rotatably installed on the side, and the sliding of the second slide plate 44 drives the second gear 45 to slide. A second rack 46 is engaged with one side of the second gear 45, and the second rack 46 is fixedly installed on the side wall of the shell 31, so that the second gear 45 rotates while sliding. A third slide plate 47 is slidingly set below the second gear 45, and the upper part of the third slide plate 47 is engaged with the second gear 45 through the tooth plate. When the second gear 45 rotates, it pushes the third slide plate 47 to slide to the outside of the transmission component 3, so that the first slide plate 41, the second slide plate 44, and the third slide plate 47 slide out from the inside of the transmission component 3 step by step, so that the depth of the gap can be explored, and at the same time, the volume of the explorer is effectively reduced, avoiding the explorer occupying too large an area in the operating room.

[0038] Two half gears 53 are rotatably installed under the third slide plate 47. When the third slide plate 47 slides, the half gears 53 are driven to slide. A magnetic search block 52 is provided between the two half gears 53. The magnetic search block 52 is used to search and adsorb metal parts. The magnetic search block 52 follows the sliding of the third slide plate 47, so that the magnetic search block 52 can adsorb metal parts deep in the gap. The top of the magnetic search block 52 is fixedly connected to the third slide plate 47. A swing arm 51 is fixedly installed under the half gear 53. The swing arm 51 is used to search and adsorb metal parts. When the two swing arms 51 move, the search area for metal parts is increased, thereby improving the efficiency of searching for metal parts. At the same time, when the two swing arms 51 shrink, they move closer to the magnetic search block 52, and the metal parts between the swing arm 51 and the magnetic search block 52 are adsorbed. The metal parts are squeezed so that they are firmly adsorbed on the swing arm 51 and the magnetic search block 52, thereby avoiding the metal parts from falling off the search instrument when the metal parts are taken out, which brings extra workload to medical staff. A gear is provided on the side wall of the half gear 53 near the magnetic search block 52, and a fourth rack 36 is provided on both sides of the magnetic search block 52. The fourth rack 36 is fixedly mounted on the bottom of the shell 31. The fourth rack 36 is engaged with the half gear 53 through the tooth plate, so that when the third slide 47 slides toward the outside of the transmission component 3, it drives the gear of the half gear 53 to engage with the tooth plate of the fourth rack 36, and then drives the half gear 53 to rotate, so that the two swing arms 51 are away from each other at one end of the half gear 53, and the two half gears 53 are opened outside the transmission component 3, thereby increasing the search area for metal parts and improving the search efficiency.

[0039] The bottom of the shell 31 is rotatably mounted with a transmission gear 35, and a telescopic rack 34 is slidably mounted on one side of the transmission gear 35. When the magnetic search block 52 extends from the inside of the shell 31, the telescopic rack 34 is driven to extend from the inside of the shell 31. By pushing the telescopic rack 34 toward the inside of the shell 31, the magnetic search block 52 is retracted inside the shell 31, thereby reducing the volume of the search instrument when it is idle. A tooth plate is provided on the side close to the magnetic search block 52 and the telescopic rack 34. The magnetic search block 52 is The telescopic rack 34 slides alternately with the telescopic rack 34 at the bottom of the shell 31 through the meshing transmission gear 35. When the telescopic rack 34 is squeezed toward the interior of the shell 31, it drives the telescopic rack 34 to rotate. The rotating telescopic rack 34 drives the magnetic search block 52 to slide toward the interior of the shell 31, thereby shrinking the magnetic search block 52 inside the shell 31. When the magnetic search block 52 slides toward the interior of the shell 31, it drives the third slide 47, the second slide 44 and the first slide 41 to slide toward the interior of the shell 31 in turn.

[0040] A lower bevel gear 32 is rotatably installed between the side walls of the transmission assembly 3, and one side of the lower bevel gear 32 is engaged with the first slide 41, and the first slide 41 is pushed to slide by the rotation of the lower bevel gear 32. One side of the lower bevel gear 32 is engaged with an upper bevel gear 33, and the rotation of the upper bevel gear 33 drives the lower bevel gear 32 to rotate, thereby pushing the first slide 41 out from the inside of the shell 31, driving the first gear 42 to push the second slide 44 out from the inside of the shell 31, and driving the second gear 45 to push the third slide 47 out from the inside of the shell 31, thereby driving the swing arm 51 to be pushed out from the inside of the shell 31 and unfolded, so that the finder can explore the depth of the gap, and at the same time, the volume of the finder is effectively reduced through the step-by-step telescopic function.

[0041] The lower end of the inner rod 22 is inserted with a concave connecting column 23, and the outer sleeve of the concave connecting column 23 is provided with a spring to continuously squeeze the inner rod 22 downward. A plurality of wedge-shaped grooves are opened in the lower annular array of the concave connecting column 23, and a convex connecting column 24 is provided at the lower end of the concave connecting column 23, which drives the convex connecting column 24 to rotate through the concave connecting column 23. A plurality of wedge blocks are provided in the upper annular array of the convex connecting column 24. When the inner rod 22 rotates clockwise, the spring squeezes the wedge block downward, so that the wedge block is engaged in the wedge groove, thereby driving the convex connecting column 24 to rotate through the concave connecting column 23. The lower end of the convex connecting column 24 is fixedly connected to the upper bevel gear 33. When the convex connecting column 24 rotates clockwise, it pushes the first slide plate 41 to slide to the outside of the shell 31 through the lower bevel gear 32. When the concave connecting column 23 rotates counterclockwise, it rotates and separates from the convex connecting column 24.

[0042] The bottom of the outer rod 21 is rotatably connected to a connecting piece 25, and the connecting piece 25 is fixedly connected to the shell 31. The shell 31 is driven to rotate by the connecting piece 25, so that the finder can explore the gap in multiple directions. A ratchet ring 26 is fixedly connected to the top of the connecting piece 25, and the connecting piece 25 and the shell 31 are driven to rotate by the ratchet ring 26. The inner side wall of the ratchet ring 26 is provided with a plurality of wedge-shaped protrusions in an annular array. A pawl 221 is slidably installed on the side wall of the inner rod 22 near the ratchet ring 26. When the pawl 221 rotates counterclockwise, it engages with the wedge of the ratchet ring 26, thereby driving the shell 31 to rotate through the connecting piece 25. When the pawl 221 rotates clockwise, it separates from the ratchet ring 26, so that the inner rod 22 no longer drives the shell 31 to rotate.

[0043] The present invention drives the upper bevel gear 33 to rotate through a motor, causing the lower bevel gear 32 to rotate and then gradually push the first slide 41, the second slide 44 and the third slide 47 out from the interior of the housing 31, so that the finder can penetrate deep into the gap, thereby improving the finder's efficiency in finding metal parts. At the same time, through the meshing relationship between the fourth rack 36 and the half gear 53, the half gear 53 drives the swing arm 51 to swing to expand when sliding, thereby increasing the search area of the swing arm 51 and effectively improving the search efficiency. The pawl 221 slides in the ratchet ring 26, causing the inner rod 22 to rotate the ratchet ring 26 when rotating counterclockwise, and then drives the housing 31 to rotate through the connecting member 25, so that the finder can rotate in the gap, thereby finding metal parts in multiple directions, effectively improving the search efficiency of metal parts.

[0044] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A magnetic search device for the floor of an operating room, comprising a head assembly (1), wherein a motor is fixedly installed inside the head assembly (1), a rod assembly (2) is provided below the head assembly (1), the motor drives the rod assembly (2) to rotate, a transmission assembly (3) is connected below the rod assembly (2), and when the rod assembly (2) rotates, the transmission assembly (3) is driven to rotate, characterized in that: A gear drive assembly (4) is provided inside the transmission assembly (3), and the motor drives the rod assembly (2) so that the rod assembly (2) rotates to push the gear drive assembly (4) out of the transmission assembly (3) step by step. When the gear drive assembly (4) needs to be retracted, the extended gear drive assembly (4) is retracted through the transmission assembly (3). A magnetic attraction assembly (5) is provided below the gear drive assembly (4), and the magnetic attraction assembly (5) adsorbs metal parts. The gear drive assembly (4) pushes the magnetic attraction assembly (5) out of the transmission assembly (3) and expands it. When the magnetic attraction assembly (5) contracts, it attracts and squeezes the metal parts so that the metal parts move closer to the center of the magnetic attraction assembly (5).

2. The operating room floor magnetic search device according to claim 1, characterized in that: The tooth drive assembly (4) includes a first slide (41), a tooth plate is installed on the upper side of the first slide (41), a first gear (42) is rotatably installed below the first slide (41), the first slide (41) slides to drive the first gear (42) to slide, a first rack (43) is meshed on one side of the first gear (42), the position of the first rack (43) is fixed, a second slide (44) is slidably provided below the first gear (42), the upper side of the second slide (44) is meshed with the first gear (42) through the tooth plate, and the first gear (42) rotates to drive the second The slide plate (44) slides toward the outside of the transmission assembly (3), and a second gear (45) is rotatably installed below the second slide plate (44). The sliding of the second slide plate (44) drives the second gear (45) to slide. A second rack (46) is engaged with one side of the second gear (45). The position of the second rack (46) is fixed. A third slide plate (47) is slidably provided below the second gear (45). The upper part of the third slide plate (47) is engaged with the second gear (45) through a tooth plate. The second gear (45) rotates to push the third slide plate (47) to slide toward the outside of the transmission assembly (3).

3. The operating room floor magnetic search device according to claim 2, characterized in that: Two half gears (53) are rotatably mounted below the third slide (47), a magnetic search block (52) is provided between the two half gears (53), the magnetic search block (52) searches for metal parts, the top of the magnetic search block (52) is fixedly connected to the third slide (47), a swing arm (51) is fixedly installed below the half gear (53), a gear is provided on the side wall of the half gear (53) near the magnetic search block (52), and a fourth rack (36) is provided on both sides of the magnetic search block (52), the fourth rack (36) is meshed with the half gear (53) through the tooth plate, and the third slide (47) slides toward the outside of the transmission assembly (3) to drive the gear of the half gear (53) to mesh with the tooth plate of the fourth rack (36), thereby driving the half gear (53) to rotate, so that the two swing arms (51) are away from one end of the half gear (53) and move away from each other.

4. The operating room floor magnetic search device according to claim 3, characterized in that: The transmission assembly (3) includes a housing (31), the first rack (43) and the second rack (46) are fixedly mounted on the side walls of the housing (31), the first slide (41), the second slide (44) and the third slide (47) slide between the side walls of the housing (31), and the fourth rack (36) is fixedly mounted on the bottom of the housing (31).

5. The operating room floor magnetic search device according to claim 4, characterized in that: A transmission gear (35) is rotatably mounted on the bottom of the housing (31), and a telescopic rack (34) is slidably mounted on one side of the transmission gear (35). A toothed plate is provided on the side where the magnetic search block (52) and the telescopic rack (34) are close to each other. The magnetic search block (52) and the telescopic rack (34) slide alternately on the bottom of the housing (31) through the meshing transmission gear (35). The telescopic rack (34) is pressed into the interior of the housing (31) to drive the magnetic search block (52) to slide into the interior of the housing (31).

6. The operating room floor magnetic search device according to claim 5, characterized in that: A lower bevel gear (32) is rotatably mounted between the side walls of the transmission assembly (3). One side of the lower bevel gear (32) is meshed with the first slide plate (41). When the lower bevel gear (32) rotates, it pushes the first slide plate (41) to slide. An upper bevel gear (33) is meshed with one side of the lower bevel gear (32). When the upper bevel gear (33) rotates, it drives the lower bevel gear (32) to rotate.

7. The operating room floor magnetic search device according to claim 5, characterized in that: The rod assembly (2) comprises an outer rod (21), the upper end of the outer rod (21) being fixedly connected to the head assembly (1), an inner rod (22) being provided inside the outer rod (21), and the upper end of the inner rod (22) being fixedly connected to the rotating shaft of the motor.

8. The operating room floor magnetic search device according to claim 7, characterized in that: A concave connecting column (23) is inserted into the lower end of the inner rod (22), and a plurality of wedge-shaped grooves are formed in a lower annular array of the concave connecting column (23). A convex connecting column (24) is provided at the lower end of the concave connecting column (23), and a plurality of wedge blocks are provided in an upper annular array of the convex connecting column (24). When the inner rod (22) rotates clockwise, the wedge blocks are engaged in the wedge-shaped grooves, so that the concave connecting column (23) drives the convex connecting column (24) to rotate. The lower end of the convex connecting column (24) is fixedly connected to the upper bevel gear (33). When the convex connecting column (24) rotates clockwise, it pushes the first slide plate (41) to slide toward the outside of the housing (31) through the lower bevel gear (32). When the concave connecting column (23) rotates counterclockwise, it is separated from the convex connecting column (24).

9. The operating room floor magnetic search device according to claim 7, characterized in that: The bottom of the outer rod (21) is rotatably connected to a connecting piece (25), and the connecting piece (25) is fixedly connected to the housing (31). A ratchet ring (26) is fixedly connected to the top of the connecting piece (25), and a plurality of wedge-shaped protrusions are provided in an annular array on the inner side wall of the ratchet ring (26). A pawl (221) is slidably mounted on the side wall of the inner rod (22) near the ratchet ring (26). When the pawl (221) rotates counterclockwise, it engages with the wedge of the ratchet ring (26), and when the pawl (221) rotates clockwise, it separates from the ratchet ring (26).

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