Lithotomy position examining table

Abstract

The lithotomy position examining table comprises a first supporting column and a driving assembly in the first supporting column, a connecting rod is fixedly connected to the middle of one side of the first supporting column, a second supporting column is fixedly connected to the end, away from the first supporting column, of the connecting rod, and a rotating shaft penetrates through and is fixedly connected to the top end of the second supporting column; a first bed board is placed at the top end of the first supporting column, a guide rail is fixedly connected to the side, close to the second supporting column, of the top end of the first supporting column, and a shoulder rest is placed at the top end of the first bed board. By arranging the supporting assembly and the stretching mechanism, angle adjustment is conducted on the upper body of a patient to enable the upper body of the patient to be in a concave body position, and meanwhile traction stretching is conducted on the neck of the patient; by arranging the telescopic assembly and the bending assembly, the length of the legs of the patient is automatically matched, and bending is achieved so that the patient can be in the improved lithotomy position; by arranging the driving assembly, the medical staff can complete the body position adjusting process only through one-time operation.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, in particular to a lithotomy position examination bed. Background Art

[0002] The lithotomy position is a commonly used surgical position used to expose the perineum. It is usually used in surgical and diagnostic operations such as obstetrics and gynecology, urology, and anorectal medicine. The purpose of this position is to facilitate doctors to perform surgery or examinations while maximizing exposure of the patient's perineum.

[0003] There are also related products in the prior art. For example, the patent with patent number CN114376844B discloses a lithotomy position operating bed, including a support seat and a bed body arranged on the support seat, and two sets of leg support mechanisms are arranged on the bed body, and the leg support mechanism includes a connecting seat, a sliding rod, a fixed seat, a sliding seat, a hinged plate 1 and a hinged plate 2. The connecting seat is vertically rotatably arranged on the bed body, and the sliding rod is horizontally rotatably arranged on the connecting seat, and the fixed seat is fixedly arranged on the sliding rod. The sliding seat is slidably connected to the sliding rod along the length direction of the sliding rod, one end of the hinged plate 1 is hinged to the fixed seat, and the other end is hinged to the hinged plate 2, and the hinged plate 2 is hinged to the sliding seat relative to the other end of the hinged plate 1. A first driving mechanism for driving the connecting seat to rotate and a second driving mechanism for driving the sliding rod to rotate are arranged on the bed body, and a third driving mechanism for driving the sliding seat to slide is arranged on the sliding rod.

[0004] In this case, through the cooperation of the second drive mechanism and the third drive mechanism, free switching between the lithotomy position and the supine position can be achieved without adding additional accessories, thereby greatly reducing the workload of medical staff; at the same time, the linkage between the third screws is used to achieve simultaneous adjustment of the two sets of leg support mechanisms, further improving work efficiency.

[0005] However, the above device only describes the application of the traditional lithotomy position. In the traditional lithotomy position, the bending angle of the patient's lower limbs is large and the fulcrum of the lower limbs is mainly concentrated in the popliteal fossa. The small support range of the popliteal fossa leads to long-term continuous compression of the popliteal nerve during the examination, which further causes lower limb venous thrombosis, nerve damage and calf compartment syndrome. At the same time, there is a lack of adjustment of the patient's upper body position in this case. The traditional lithotomy position with the head low and the feet high will lead to high abdominal pressure and poor blood circulation throughout the body. Summary of the invention

[0006] The purpose of the present invention is to provide a lithotomy position examination bed, which has the advantages of body position adjustment and angle adjustment and solves the problems raised in the background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions: a lithotomy position examination bed, comprising a support column 1 and a drive assembly for controlling the working state of a device inside the support column 1, wherein the drive assembly is located inside the support column 1 and is rotationally connected to the support column 1 in a limited position; The support column one is provided with two, and a limiting rod is fixedly connected between the support column one near the top, a connecting rod is fixedly connected to the middle of one side of the support column one, and the end of the connecting rod away from the support column one is fixedly connected to the support column two, the top of the support column two is penetrated by and fixedly connected with a rotating shaft, a bed board one is placed on the top of the support column one, the top of the rotating shaft is penetrated by and fixedly connected with the bed board two, a guide rail is fixedly connected to the side of the top of the support column one near the support column two, and a shoulder rest is placed on the top of the bed board one.

[0008] Preferably, the driving assembly includes a driving wheel, one side of the driving wheel is penetrated by and fixedly connected with a driving shaft, an end of the driving shaft close to the driving wheel is penetrated by and limitedly rotatably connected to the middle section of the limiting rod, an end of the driving shaft away from the driving wheel is fixedly connected with screw 1, an end of the screw 1 away from the driving shaft is fixedly connected with screw 2, a telescopic rod is transmission-connected to the outer contour of an end of the screw 2 away from screw 1, transmission racks are fixedly connected to both sides of the telescopic rod away from screw 2, and a support assembly for adjusting the angle of a bed board is provided on the outer contour of the driving shaft.

[0009] Preferably, the threads of screw rod 1 and screw rod 2 have opposite rotation directions and the same pitch, and the bed board 1, bed board 2 and shoulder support are all made of flexible materials.

[0010] Preferably, the support assembly includes a transmission shaft, which is vertically penetrated and transmission-connected to the outer contour of screw rod 1, the axial ends of the transmission shaft are fixedly connected with transmission sliders, and the transmission sliders are limitedly slidably connected to the inside of the guide rail, and a transmission rod 1 is penetrated and rotatably connected to the outer contours of the two ends of the transmission shaft, and the middle section of the transmission rod 1 is fixedly connected with a ring joint 1, and the end of the ring joint 1 close to the guide rail is rotationally connected to a transmission rod 2 through a pin shaft, and the end of the transmission rod 2 away from the ring joint 1 is fixedly connected with a ring joint 2, and the ring joint 2 penetrates and is limitedly rotated on the inner contour of the top end of the support column 1, the length ratio of the transmission rod 2 to the transmission rod 1 is one to two, and the end of the transmission rod 1 away from the transmission shaft is penetrated and provided with a stretching mechanism for pulling the shoulder rest.

[0011] Preferably, the stretching mechanism includes a traction rope, the bottom end of the traction rope passes through and is fixedly connected to an end of the transmission rod away from the transmission shaft, the top end of the traction rope is fixedly connected to the outer contour of the shoulder rest, a fixing block passes through and is slidably connected to the outer contour of the middle section of the traction rope, the bottom end of the fixing block is fixedly connected to the outer contour of the top end of the bed board close to the support column, a reset spring sleeved on the outer contour of the traction rope is arranged between the fixing block and the shoulder rest, the traction rope is initially in a relaxed state, and a telescopic component that automatically adapts according to the patient's leg length is arranged on the outer contour of the rotating shaft.

[0012] Preferably, the telescopic assembly includes an L-shaped rod, which is penetrated and limitedly rotatably connected to the outer contour of the rotating shaft, the end of the L-shaped rod close to the transmission rack is fixedly connected to an arcuate rack, the arcuate rack is meshed and transmission-connected to the transmission rack, the end of the L-shaped rod away from the arcuate rack is penetrated and limitedly slidably connected to a telescopic slider, the top end of the telescopic slider is fixedly connected to a connecting column, the top end of the connecting column is fixedly connected to a popliteal pad, and a bending component for adjusting the position of the patient's calf is provided on the outer contour of the telescopic slider.

[0013] Preferably, the bending assembly includes a bending rod 1, one end of which is rotatably connected to the outer contour of the telescopic slider away from the arc-shaped rack through a pin shaft, and the bending rod 1 is rotatably connected to the bending rod 2 near the middle section through a pin shaft, and the end of the bending rod 2 near the arc-shaped rack is penetrated by and limitedly rotatably connected with a positioning shaft, the positioning shaft penetrates and is fixedly connected to the outer contour of the L-shaped rod, the end of the positioning shaft away from the L-shaped rod is penetrated by and rotatably connected with a bending rod 3, the end of the bending rod 3 away from the positioning shaft is penetrated by and limitedly slidably connected to the limiting slider, the middle section of the limiting slider is penetrated by and fixedly connected with a bending shaft, the other end of the bending shaft penetrates and is limitedly rotatably connected to the end of the bending rod 1 away from the telescopic slider, and a pedal is fixedly connected to the outer contour of the top end of the limiting slider.

[0014] Preferably, the ratio of the length of the bending rod 1 to the bending rod 2 is 1:1, the ratio of the length of the bending rod 1 to the bending rod 3 is 2:3, a resistance wire is provided in the connecting column and is electrically connected to the telescopic slider, and an electric control switch is provided on the outer contour of the telescopic slider.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a support component and a stretching mechanism to adjust the angle of the patient's upper body to put it in a concave position while traction and stretching the patient's neck, thereby preventing slipping and reducing postoperative eye complications.

[0016] 2. The present invention automatically adapts to the patient's leg length and achieves bending by providing a telescopic component and a bending component to put the patient in a modified lithotomy position. At this time, the abdominal organs naturally move upward due to gravity, thereby exposing the pelvic cavity for easy operation.

[0017] 3. The present invention provides a driving assembly, which synchronizes the remaining structures of the transmission device. Medical staff only need a single operation to complete the above-mentioned body position adjustment process, which greatly reduces the steps of adjusting the body position and thus improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a cross-sectional view of the main structure of the present invention; Figure 3 This is an exploded schematic diagram of the bed structure of the present invention; Figure 4 It is a schematic diagram of the position relationship between the bed structure and the driving assembly of the present invention; Figure 5 A schematic diagram of the positional relationship between the driving assembly and the supporting assembly of the present invention; Figure 6 It is a schematic diagram of the positional relationship between the support assembly and the stretching mechanism of the present invention; Figure 7 This is a schematic diagram of the positional relationship between the driving assembly and the telescopic assembly of the present invention; Figure 8 It is a schematic diagram of the positional relationship between the telescopic component and the bending component of the present invention; Fig. 9 It is the overall workflow diagram of the present invention.

[0019] In the figure: 1. Support column one; 11. Limit rod; 12. Connecting rod; 13. Support column two; 14. Bed board one; 15. Shoulder support; 16. Bed board two; 17. Guide rail; 18. Rotating shaft; 2. Driving wheel; 21. Driving shaft; 22. Screw rod one; 23. Screw rod two; 24. Telescopic rod; 25. Transmission rack; 3. Transmission shaft; 31. Transmission slider; 32. Ring joint one; 33. Transmission rod two; 34. Ring joint two; 35. Transmission rod one; 4. Traction rope; 41. Fixed block; 42. Reset spring; 5. L-shaped rod; 51. Arc rack; 52. Telescopic slider; 53. Connecting column; 54. Popliteal pad; 6. Bending rod one; 61. Bending rod two; 62. Bending rod three; 63. Positioning shaft; 64. Limit slider; 65. Bending shaft; 66. Pedal. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention. Embodiment 1

[0021] See also Figures 1 to 9 The present invention provides a technical solution: a lithotomy position examination bed, comprising a support column 1 and a driving component for controlling the working state of an internal control device, wherein the driving component is located inside the support column 1 and is rotationally connected to the support column 1; The support column 1 is provided with two and a limiting rod 11 is fixedly connected between the support columns 1 near the top. A connecting rod 12 is fixedly connected to the middle of one side of the support column 1, and the end of the connecting rod 12 away from the support column 1 is fixedly connected to a support column 2 13, and the top of the support column 2 13 is penetrated and fixedly connected with a rotating shaft 18. A bed board 14 is placed on the top of the support column 1, and the top of the rotating shaft 18 is penetrated and fixedly connected with a bed board 2 16. A guide rail 17 is fixedly connected to the side of the top of the support column 1 near the support column 2 13, and a shoulder rest 15 is placed on the top of the bed board 14.

[0022] In the present invention, support column 1, connecting rod 12 and support column 2 13 together constitute the supporting structure of the device, providing limiting support for bed board 14, shoulder support 15 and bed board 2 16. Bed board 14 and bed board 2 16 jointly support the patient's body from the head to the abdominal cavity area, the shoulder support 15 supports the thyroid gland at the shoulder and neck area of ​​the patient, the driving component is limited by the limiting rod 11, and the guide rail 17 further guides the movement of the supporting component.

[0023] Medical staff operate the driving component, which synchronously drives the supporting component and the telescopic component. The supporting component adjusts the angle of the patient's upper body to ensure that the patient is in a concave position, thereby preventing slipping and reducing postoperative eye complications; the telescopic component synchronously rotates to ensure that the patient's legs are open and the maximum angle between the legs is 85°, thereby ensuring that the patient is in a modified lithotomy position for subsequent examinations; the supporting component synchronously drives the stretching mechanism, which pulls the patient's shoulder and neck to further prevent the patient from slipping and improve the patient's comfort when lying; the bending component automatically bends the knee joint as the patient's legs are straightened, ensuring that the maximum angle between the upper and lower legs is 120°, thereby alleviating the support pressure on the patient's popliteal fossa. Embodiment 2

[0024] See also Figures 4 to 6The present embodiment further explains Example 1, the driving assembly includes a driving wheel 2, one side of the driving wheel 2 is penetrated by and fixedly connected with a driving shaft 21, the end of the driving shaft 21 close to the driving wheel 2 is penetrated by and limitedly rotatably connected to the middle section of the limiting rod 11, the end of the driving shaft 21 away from the driving wheel 2 is fixedly connected with a screw 1 22, the end of the screw 1 22 away from the driving shaft 21 is fixedly connected with a screw 23, the outer contour of the end of the screw 2 23 away from the screw 1 22 is transmission-connected with a telescopic rod 24, the two sides of the telescopic rod 24 away from the end of the screw 2 23 are fixedly connected with a transmission rack 25, and a support assembly for adjusting the angle of the bed board 14 is provided on the outer contour of the driving shaft 21.

[0025] The screws of the screw rod 1 22 and the screw rod 2 23 have opposite screw threads and the same pitches. The bed board 1 14 , the bed board 2 16 and the shoulder rest 15 are all made of flexible materials.

[0026] The support assembly includes a transmission shaft 3, which is vertically penetrated and transmission-connected to the outer contour of a screw rod 22, and transmission sliders 31 are fixedly connected to the axial ends of the transmission shaft 3, and the transmission slider 31 is limitedly slidably connected to the inside of a guide rail 17, and a transmission rod 35 is penetrated and rotationally connected to the outer contours of the two ends of the transmission shaft 3, and the middle section of the transmission rod 35 is fixedly connected to a ring joint 32, and the end of the ring joint 32 close to the guide rail 17 is rotationally connected to a transmission rod 2 33 through a pin, and the end of the transmission rod 2 33 away from the ring joint 32 is fixedly connected to a ring joint 2 34, and the ring joint 2 34 penetrates and is limitedly rotated on the inner contour of the top end of the support column 1, and the ratio of the length of the transmission rod 2 33 to the transmission rod 1 35 is one to two, and the end of the transmission rod 1 35 away from the transmission shaft 3 is penetrated and provided with a stretching mechanism for pulling the shoulder support 15.

[0027] The stretching mechanism includes a traction rope 4, the bottom end of which passes through and is fixedly connected to an end of a transmission rod 35 away from the transmission shaft 3, the top end of which is fixedly connected to the outer contour of a shoulder rest 15, a fixing block 41 passes through and is slidably connected to the outer contour of the middle section of the traction rope 4, the bottom end of the fixing block 41 is fixedly connected to the outer contour of the top end of a bed board 14 close to a support column 1, a reset spring 42 sleeved on the outer contour of the traction rope 4 is arranged between the fixing block 41 and the shoulder rest 15, the traction rope 4 is initially in a relaxed state, and a telescopic component which automatically adapts according to the patient's leg length is arranged on the outer contour of the rotating shaft 18.

[0028] First, the patient lies on the upper surface of bed board 14 and bed board 2 16, and the shoulder support 15 is placed on the patient's shoulder and neck for support. At this time, the medical staff rotates the driving wheel 2, and the driving wheel 2 drives the driving shaft 21, screw 1 22 and screw 2 23 to rotate synchronously. The rotation of screw 1 22 causes the transmission shaft 3 to start moving outward along the axial direction of screw 1 22, and the rotation of screw 2 23 causes the telescopic rod 24 and the transmission rack 25 to start moving outward along the axial direction of screw 2 23.

[0029] Furthermore, the transmission shaft 3 drives the transmission slider 31 to move synchronously, so that the transmission rod 1 35 and the transmission rod 2 33 tend to move synchronously, but the limited rotation connection between the ring joint 2 34 and the support column 1 causes the transmission rod 2 33 to be unable to move outward in the horizontal direction. Under the action of the transmission slider 31 and the ring joint 1 32, the transmission rod 1 35 and the transmission rod 2 33 begin to deflect, and the deflection axis of the transmission rod 1 35 is at the position of the transmission slider 31 and the deflection axis of the transmission rod 2 33 is at the position of the ring joint 2 34. The end of the transmission rod 1 35 away from the transmission slider 31 begins to rise and extends outward, thereby supporting the bed board 14 and driving the bed board 14 to deflect synchronously. At this time, the support assembly is used to adjust the angle of the bed board 14 to achieve the purpose of tilting the patient's upper body and achieving a concave position.

[0030] At the same time, the outward extension of the transmission slider 31 during deflection causes the traction rope 4 to be stretched and in a taut state and further pulls the shoulder rest 15, so that when the patient's upper body is tilted, the shoulder rest 15 has a traction effect on the patient's head, thereby improving the patient's comfort. At this time, the return spring 42 is compressed and the return spring 42 is used to return the shoulder rest 15 during the subsequent return process. Embodiment 3

[0031] See also Figure 7 This embodiment further explains Example 2, the telescopic component includes an L-shaped rod 5, the L-shaped rod 5 is penetrated and limitedly rotatably connected to the outer contour of the rotating shaft 18, the end of the L-shaped rod 5 close to the transmission rack 25 is fixedly connected to an arcuate rack 51, the arcuate rack 51 is meshed and transmission-connected with the transmission rack 25, the end of the L-shaped rod 5 away from the arcuate rack 51 is penetrated and limitedly slidably connected to a telescopic slider 52, the top of the telescopic slider 52 is fixedly connected to a connecting column 53, the top of the connecting column 53 is fixedly connected to a popliteal pad 54, and a bending component for adjusting the position of the patient's calf is provided on the outer contour of the telescopic slider 52.

[0032] When the screw rod 23 rotates and causes the telescopic rod 24 and the transmission rack 25 to begin to move outward along the axial direction of the screw rod 23, the meshing between the transmission rack 25 and the arcuate rack 51 causes the arcuate rack 51 to drive the L-shaped rod 5 to begin to rotate along the rotation axis 18, and the L-shaped rod 5 further drives the telescopic slider 52, the connecting column 53 and the popliteal pad 54 to rotate synchronously. Since the popliteal pad 54 supports the patient's thigh, that is, along with the rotation of the telescopic assembly, the patient's legs are opened and under the limitation of the rotation ratio of the transmission rack 25 and the arcuate rack 51, the maximum angle between the patient's legs is 85°, so that the patient satisfies the modified lithotomy position for subsequent examination operations.

[0033] Compared with the traditional lithotomy position, the modified lithotomy position keeps the patient's thighs and abdomen at the same level, which effectively relieves the pressure on the patient's popliteal fossa and abdominal cavity, thereby reducing the operation time, intraoperative blood loss and the probability of postoperative lower limb complications. Embodiment 4

[0034] See also Figure 8 , this embodiment further explains Example 3, the bending assembly includes a bending rod 1 6, one end of the bending rod 1 6 is rotatably connected to the outer contour of the telescopic slider 52 on the side away from the arc-shaped rack 51 through a pin shaft, the bending rod 1 6 is rotatably connected to the bending rod 2 61 near the middle section through a pin shaft, the end of the bending rod 2 61 close to the arc-shaped rack 51 is penetrated and limitedly rotated and connected with a positioning shaft 63, the positioning shaft 63 penetrates and is fixedly connected to the outer contour of the L-shaped rod 5, the end of the positioning shaft 63 away from the L-shaped rod 5 is penetrated and rotatably connected with a bending rod 3 62, the end of the bending rod 3 62 away from the positioning shaft 63 is penetrated and limitedly slidably connected to a limiting slider 64, the middle section of the limiting slider 64 is penetrated and fixedly connected with a bending shaft 65, the other end of the bending shaft 65 penetrates and is limitedly rotated and connected to the end of the bending rod 1 6 away from the telescopic slider 52, and a pedal 66 is fixedly connected to the outer contour of the top of the limiting slider 64.

[0035] The length ratio of the bending rod 1 6 to the bending rod 2 61 is 1:1, and the length ratio of the bending rod 1 6 to the bending rod 3 62 is 2:3. A resistance wire is arranged inside the connecting column 53 and is electrically connected to the telescopic slider 52. An electric control switch is arranged on the outer contour of the telescopic slider 52.

[0036] When the patient lies on the device, he places his feet inside the pedal 66. At this time, as the patient's legs are pressed down and straightened, the bending assembly and the telescopic assembly work automatically. The pedal 66 drives the bending rod three 62 to press down, so that the limit slider 64 and the bending shaft 65 slide relative to each other inside the bending rod three 62. The limit slider 64 and the bending shaft 65 further cause the bending rod one 6 and the bending rod two 61 to deflect synchronously. The deflection of the bending rod one 6 causes the telescopic slider 52 to slide inside the L-shaped rod 5.

[0037] Since the length ratio of the bending rod 1 6 to the bending rod 2 61 is 1:1 and the length ratio of the bending rod 1 6 to the bending rod 3 62 is 2:3, it can be seen that with the deflection of the bending rod 1 6, the bending rod 2 61 and the bending rod 3 62, a triangular geometric structure is formed between the three, the maximum deflection angle of the bending rod 1 6 is 60°, and the maximum deflection angle of the bending rod 2 61 is 30°, that is, the maximum angle between the bending rod 1 6 and the bending rod 2 61 is 120°, and the maximum angle between the patient's thighs and calves is 120° to meet the body position requirements of the modified lithotomy position.

[0038] At the same time, during the sliding of the telescopic slider 52, the electric control switch on the outer contour of the telescopic slider 52 comes into contact with and squeezes the inner contour of the L-shaped rod 5, so that the circuit between the telescopic slider 52 and the popliteal pad 54 is turned on, and the resistance wire in the popliteal pad 54 starts to work and heats the patient's thigh and popliteal fossa to avoid a drop in body temperature due to exposure of the patient's legs to the external environment during the test.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithotomy examination bed, comprising a support column (1) and a drive assembly for controlling the working state of an internal control device, characterized in that: The driving assembly is located inside the support column 1 (1) and is connected to the support column 1 (1) in a limited rotation manner; The support column one (1) is provided with two, and a limiting rod (11) is fixedly connected between the support columns one (1) at a position close to the top, a connecting rod (12) is fixedly connected to the middle of one side of the support column one (1), and an end of the connecting rod (12) away from the support column one (1) is fixedly connected to the support column two (13).

2. The lithotomy position examination bed according to claim 1, characterized in that: The top end of the support column 2 (13) is penetrated by and fixedly connected with a rotating shaft (18); the top end of the support column 1 (1) is provided with a bed board 1 (14); the top end of the rotating shaft (18) is penetrated by and fixedly connected with a bed board 2 (16); the top end of the support column 1 (1) is fixedly connected with a guide rail (17) on a side close to the support column 2 (13); and the top end of the bed board 1 (14) is provided with a shoulder rest (15).

3. The lithotomy position examination bed according to claim 2, characterized in that: The driving assembly comprises a driving wheel (2), one side of the driving wheel (2) is penetrated by and fixedly connected to a driving shaft (21), one end of the driving shaft (21) close to the driving wheel (2) is penetrated by and is limitedly rotatably connected to the middle section of the limiting rod (11), one end of the driving shaft (21) away from the driving wheel (2) is fixedly connected to a first screw rod (22), one end of the screw rod (22) away from the driving shaft (21) is fixedly connected to a second screw rod (23), an outer contour of an end of the screw rod (23) away from the first screw rod (22) is drivingly connected to a telescopic rod (24), and both sides of the telescopic rod (24) away from the end of the screw rod (23) are fixedly connected to the second screw rod (23). A transmission rack (25) is connected, and a support assembly for adjusting the angle of a bed board (14) is arranged on the outer contour of the drive shaft (21); the support assembly comprises a transmission shaft (3), the transmission shaft (3) is vertically penetrated and transmission-connected to the outer contour of a screw rod (22), the two axial ends of the transmission shaft (3) are fixedly connected to transmission sliders (31), the transmission sliders (31) are limitedly slidably connected to the inside of the guide rail (17), the outer contours of the two ends of the transmission shaft (3) are penetrated and rotationally connected to a transmission rod (35), the middle section of the transmission rod (35) is fixedly connected to a ring joint (32), the ring joint One end of the first (32) close to the guide rail (17) is rotatably connected to the second transmission rod (33) through a pin shaft, and the end of the second transmission rod (33) away from the ring joint (32) is fixedly connected to the second ring joint (34), and the second ring joint (34) penetrates and is limitedly rotated on the inner contour of the top end of the support column (1), and the ratio of the length of the second transmission rod (33) to the first transmission rod (35) is one to two. The end of the first transmission rod (35) away from the transmission shaft (3) is penetrated and provided with a stretching mechanism for pulling the shoulder support (15); the stretching mechanism includes a traction rope (4), and the bottom end of the traction rope (4) penetrates and is fixedly connected to the transmission shaft (1). The rod (35) is at one end away from the transmission shaft (3); the top end of the traction rope (4) is fixedly connected to the outer contour of the shoulder support (15); a fixing block (41) passes through and is slidably connected to the outer contour of the middle section of the traction rope (4); the bottom end of the fixing block (41) is fixedly connected to the outer contour of the top of the bed board (14) near the support column (1); a return spring (42) sleeved on the outer contour of the traction rope (4) is arranged between the fixing block (41) and the shoulder support (15); the traction rope (4) is initially in a relaxed state; and a telescopic component that automatically adapts according to the patient's leg length is arranged on the outer contour of the rotating shaft (18);The telescopic assembly comprises an L-shaped rod (5), the L-shaped rod (5) being penetrated and connected to the outer contour of the rotating shaft (18) in a limited rotation manner, the end of the L-shaped rod (5) close to the transmission rack (25) being fixedly connected to an arc-shaped rack (51), the arc-shaped rack (51) and the transmission rack (25) being meshed and transmission-connected, the end of the L-shaped rod (5) away from the arc-shaped rack (51) being penetrated and connected to a telescopic slider (52) in a limited sliding manner, the top end of the telescopic slider (52) being fixedly connected to a connecting column (53), and the top end of the connecting column (53) being fixedly connected to a popliteal fossa pad (54). ; 4. The lithotomy position examination bed according to claim 3, characterized in that: The threads of the screw rod 1 (22) and the screw rod 2 (23) have opposite rotation directions and the same pitch; the bed board 1 (14), the bed board 2 (16) and the shoulder rest (15) are all made of flexible material.

5. The lithotomy position examination bed according to claim 4, characterized in that: The outer contour of the telescopic sliding block (52) is provided with a bending component for adjusting the position of the patient's lower leg.

6. The lithotomy position examination bed according to claim 5, characterized in that: The bending assembly comprises a bending rod 1 (6), one end of which is rotatably connected to the outer contour of the telescopic slider (52) on a side away from the arc-shaped rack (51) via a pin.

7. The lithotomy position examination bed according to claim 6, characterized in that: The bending rod 1 (6) is rotatably connected to the bending rod 2 (61) at a position close to the middle section via a pin shaft; one end of the bending rod 2 (61) close to the arc-shaped rack (51) is penetrated by and is limitedly rotatably connected to a positioning shaft (63); the positioning shaft (63) penetrates and is fixedly connected to the outer contour of the L-shaped rod (5); one end of the positioning shaft (63) away from the L-shaped rod (5) is penetrated by and is rotatably connected to the bending rod 3 (62); one end of the bending rod 3 (62) away from the positioning shaft (63) is penetrated by and is limitedly slidably connected to a limiting slider (64); the middle section of the limiting slider (64) is penetrated by and is fixedly connected to a bending shaft (65); the other end of the bending shaft (65) is penetrated by and is limitedly rotatably connected to the end of the bending rod 1 (6) away from the telescopic slider (52); and a pedal (66) is fixedly connected to the outer contour of the top end of the limiting slider (64).

8. The lithotomy position examination bed according to claim 7, characterized in that: The length ratio of the bending rod 1 (6) to the bending rod 2 (61) is 1:1, and the length ratio of the bending rod 1 (6) to the bending rod 3 (62) is 2:

3. A resistance wire is arranged inside the connecting column (53) and is electrically connected to the telescopic slider (52). An electric control switch is arranged on the outer contour of the telescopic slider (52).

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