Lithotomy position leg bracket and operating bed

Abstract

The invention relates to a leg bracket and provides a lithotomy position leg bracket which comprises a support and a leg placing assembly, the leg placing assembly is arranged on the support and comprises a shelf and a wrapping plate, the wrapping plate is arranged on the shelf and comprises a first supporting section, a transition section and a second supporting section, and the first supporting section is connected with the second supporting section through the transition section. The first supporting section and the second supporting section incline downwards along the position away from the transition section. And detection patches are arranged on the first supporting section, the transition section and the second supporting section. The invention further provides an operating bed which comprises the leg bracket. According to the device, the pressure of the far ends of thighs, popliteal space areas, fibula heads and gastrocnemius muscles of a patient in the lithotomy position operation process can be detected in real time through the multiple detection patches, and the height of the lifting rod and the angle between the second supporting section and the transition section can be automatically controlled when abnormality is detected, so that automatic fine adjustment of the lithotomy position posture is achieved; and the risk of body position errors in the long-time operation process is effectively avoided.

Description

Technical Field

[0001] The invention relates to a leg support, in particular to a lithotomy position leg support and an operating table. Background Art

[0002] The lithotomy position is a medical position commonly used in gynecological and urological surgeries. The patient lies supine with their legs raised and spread apart on a leg rest. The leg rest supports and secures the patient's legs to ensure a smooth operation. However, since surgeries are typically prolonged, the forces between the patient's legs and the leg rest may change, leading to surgical complications. Common peroneal nerve injury, for example, is a common complication, often caused by improper leg fixation or insufficient padding, and is particularly prone to occur during prolonged surgeries. Existing leg rests are difficult to quickly fine-tune during surgery, relying heavily on the medical staff's experience and increasing the risk of misalignment. Summary of the Invention

[0003] The purpose of the present invention is to provide a lithotomy position leg support and an operating table, which can at least solve some of the defects in the prior art.

[0004] To achieve the above-mentioned object, an embodiment of the present invention provides the following technical solution: a lithotomy position leg support, comprising a bracket and a leg rest assembly, wherein the leg rest assembly is mounted on the bracket, the leg rest assembly comprises a shelf and a covering plate, the covering plate is mounted on the shelf, the covering plate comprises a first supporting section, a transition section, and a second supporting section, the first supporting section and the second supporting section are connected by the transition section, and the first supporting section and the second supporting section are both inclined downwardly away from the transition section;

[0005] The first supporting section, the transition section and the second supporting section are all provided with detection patches for detecting the pressure at corresponding positions of the patient.

[0006] Furthermore, the first support section and the second support section both include a contact layer, an airbag layer and an air path layer. The airbag layer is located between the contact layer and the air path layer. The covering plate is installed on the shelf through the air path layer, and an air path connected to the airbag layer is built into the air path layer.

[0007] Furthermore, the airbag layer of the second supporting section includes two relatively independent airbag parts, one of which corresponds to the gastrocnemius muscle of the leg, and the other corresponds to the fibula head of the leg.

[0008] Furthermore, two detection patches are provided on the second supporting section, corresponding to the two corresponding areas of the airbag parts respectively.

[0009] Furthermore, the inclination angle of the first support segment is greater than that of the second support segment, and the second support segment is rotatably connected to the transition segment, and the rotation axis is horizontally arranged.

[0010] Furthermore, the bracket includes a lifting rod and a mounting seat, the lifting rod is installed on the mounting seat, and the shelf is installed on the top of the lifting rod.

[0011] Furthermore, the lifting rod includes a lifting body, a first support rod and a second support rod. A support is provided at the top of the lifting body. The first support rod and the second support rod are both installed on the support. The first support rod is located directly above the support and is supported at the corresponding transition section of the shelf. One end of the second support rod is rotatably connected to the second support section corresponding to the shelf, and the other end is connected to the support.

[0012] Furthermore, the second support rod adopts a telescopic structure, and the second support section is controlled to rotate relative to the transition section by the telescopic movement of the second support rod.

[0013] Furthermore, a blood flow detection element is provided on the first supporting section, and when the blood flow data detected by the blood flow detection element is lower than a preset value and lasts for a preset time, an alarm is directly issued.

[0014] An embodiment of the present invention further provides an operating table, comprising a bed body and the above-mentioned lithotomy position leg support, wherein the support is detachably mounted on the bed body.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the leg support is mainly used for patients in the lithotomy position, and the height of the lifting rod can be adjusted according to the patient and the needs of the operation to meet the requirements of the lithotomy position. In addition, a detection patch is set on the covering plate of the leg rest assembly to detect the pressure of the distal thigh, popliteal fossa, fibula head and gastrocnemius muscle of the patient in the lithotomy position operation, and then determine whether the patient's posture needs to be fine-tuned. The leg support provided by the present invention can also automatically control the height of the lifting rod and automatically control the angle between the second support section and the transition section according to the pressure of each detection patch, so as to achieve fine-tuning of the patient's posture, which can effectively avoid the risk of posture errors during long-term surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a lithotomy leg support provided by an embodiment of the present invention;

[0017] Figure 2 A schematic structural diagram of a covering belt of a lithotomy leg support provided by an embodiment of the present invention;

[0018] Figure 3 A partial cross-sectional view of a covering band of a lithotomy leg support provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying 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 embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1 An embodiment of the present invention provides a lithotomy position leg support that can be applied to an operating table to support the patient's legs during lithotomy surgery. The support includes a bracket 1 and a leg rest assembly 2. The leg rest assembly 2 is mounted on the bracket 1. The bracket 1 can serve as a supporting component for the leg rest assembly 2. The leg rest assembly 2 is mounted on the bed of the operating table through the bracket 1. Generally speaking, the bracket 1 has a lifting function, and thus the bracket 1 includes a lifting rod 11 and a mounting seat 12. The lifting rod 11 is mounted on the mounting seat 12. The mounting seat 12 can be detachably mounted on the bed of the operating table. The leg rest assembly 2 is mounted on the top of the lifting rod 11. The height of the leg rest assembly 2 can be adjusted by the lifting rod 11 to adjust the lithotomy position of the patient. When the bracket 1 is installed on the bed, mark the zero point position of the lifting rod 11 relative to the bed. When the patient's legs are supported on the leg rest assembly 2, adjusting the lifting rod 11 can control the height difference between the patient's legs and the patient's upper body, thereby adjusting the patient's hip flexion angle, that is, by controlling the height of the leg rest assembly 2 to adjust the patient's hip flexion angle, to ensure that the patient is in a suitable lithotomy position.

[0021] See also Figure 1 as well as Figure 2 The legrest assembly 2 includes a shelf 21 and a covering plate 22. The shelf 21 is mounted on the top of the bracket 1, and the covering plate 22 is mounted on the shelf 21. The covering plate 22 has a legrest slot that can be bent and deformed perpendicular to the length. The legrest slot runs through the length of the covering plate 22, and the patient's calf can pass through the legrest slot. The legrest slot is an open structure with opposite edges extending along its length. An opening is formed between the two opposite edges. The opening is opposite to the shelf 21, and the patient's calf can extend into the legrest slot along the opening. When the patient's calf is at least partially located in the legrest slot, the covering plate 22 is tied with a strap. The covering plate 22 is bent and deformed to reduce the size of the opening, and the covering plate 22 partially wraps the patient's calf. Of course, during the use of the strap, there is no need to control the covering plate 22 to exert a large pressure on the patient's leg.

[0022] Specifically, the covering plate 22 as a whole is an irregular inverted V structure, and the covering plate 22 includes a first support section 221, a second support section 222 and a transition section 223, and the first support section 221 and the second support section 222 are connected by the transition section 223, and the transition section 223 is located at the vertex of the covering plate 22, and the first support section 221 and the second support section 222 are both inclined downward along a position away from the transition section 223, wherein the inclination angle of the first support section 221 is greater than that of the second support section 222, and the length of the first support section 221 is smaller than that of the second support section 222. Of course, the intersection of the first support section 221 and the second support section 222 has a smooth transition. When the patient places his legs in the leg rest groove, the patient's calf is located on the second support section 222, and the distal end of the patient's thigh (near the popliteal fossa) is located on the first support section 221. The patient's popliteal fossa is located directly above the transition section 223, and there is a gap between the two. The flexion angle of the patient's hip joint can be controlled by the inclination angle of the first support section 221 and the height of the lifting rod 11, and the flexion angle of the patient's knee joint can be controlled by the inclination angle of the second support section 222 and the first support section 221. The lifting rod 11 is supported at the second support section 222. In addition, the covering plate 22 also includes a plurality of detection patches 23. The detection patches 23 are thin sheets and are provided with pressure detection elements. The so-called pressure detection elements here use flexible resistors or capacitive sensors. Each detection patch 23 is a movable structure arranged on the outside of the covering plate 22. An electrical circuit is provided inside the covering plate 22. Each detection patch 23 is electrically connected to the electrical circuit inside the covering plate 22. When in use, the detection patch 23 is first attached to the corresponding position of the patient's leg, and then the leg is placed in the leg rest groove. Of course, the detection patches 23 should all be located in the leg rest groove. The number of detection patches 23 is preferably four, corresponding to the distal thigh, popliteal fossa, fibular head and gastrocnemius muscle of the human leg. In a preferred embodiment, a blood flow detection element 24 is further provided on the second supporting section 222 . The blood flow detection element 24 uses optical sensing (PPG) to detect changes in subcutaneous microcirculatory blood flow through infrared / green LEDs.

[0023] See also Figure 1-Figure 3Detailing the structure of the covering plate 22 along the thickness direction, the first support segment 221 and the second support segment 222 both include a contact layer 224, an airbag layer 225, and an air path layer 226. The contact layer 224 is the surface layer, with the legs directly in contact with it. The airbag layer 225 is located between the contact layer 224 and the air path layer 226, and the airbag layer 225 is covered on the inside by the contact layer 224 and the air path layer 226. The covering plate 22 is mounted on the shelf 21 via the air path layer 226, and an air path 228 is built into the air path layer 226. The air path 228 communicates with the airbag layer 225 and is used to inflate or deflate the airbag layer 225. The blood flow detection element 24 is disposed on the surface layer of the second support segment 222. The transition section 223's connection with the first support section 221 and the second support section 222 are the highest points of the cladding plate 22. The connection between the transition section 223 and the second support section 222 is a bendable structure. For example, the second support section 222 can rotate relative to the transition section 223, with the axis of rotation being horizontally disposed, thereby enabling adjustment of the angle between the second support section 222 and the transition section 223. Based on this structure, the lifting rod 11 comprises a lifting body 111, a first support rod 112, and a second support rod 113. A support 114 is disposed at the top of the lifting body 111. Both the first support rod 112 and the second support rod 113 are mounted on the support 114. The first support rod 112 is located directly above the support 114 and is supported on the shelf 21 at the location corresponding to the transition section 223. One end of the second support rod 113 is rotatably connected to the shelf 21 at the location corresponding to the second support section 222, specifically at the location corresponding to the gastrocnemius muscle of the shelf 21, while the other end is connected to the support 114. The second support rod 113 adopts a telescopic structure. The telescopic movement of the second support rod 113 can control the rotation of the second support section 222 relative to the transition section 223 to achieve angle adjustment between the two. In addition, since the bed body of the operating bed and the legrest assembly 2 are staggered in the horizontal direction, and the legrest assembly 2 is located on the outside of the foot of the bed body, the lifting body 111 adopts a bending structure, including a first vertical portion, an inclined portion, and a second vertical portion connected in sequence. The first vertical portion and the second vertical portion are not coaxial, and the inclined portion extends upward from the top end of the first vertical portion to the bottom end of the second vertical portion. The above-mentioned support 114 is set on the second vertical portion. The first vertical portion is connected to the mounting base 12 and can be lifted and lowered vertically in a manner similar to a cylinder, thereby driving the second vertical portion and the legrest assembly 2 thereon to lift and lower vertically.

[0024] The airbag layer 225 of the second support section 222 includes two relatively independent airbag parts 227, one of which corresponds to the gastrocnemius muscle of the leg, and the other corresponds to the fibula head of the leg; and the first support section 221 includes an independent airbag part 227. Each airbag part 227 is connected to the air path 228 of the air path layer 226 through an independent solenoid valve 229, that is, one end of the air path 228 is connected to the outside world, and the other end is divided into three branches, corresponding to three solenoid valves 229 respectively. Of course, an air pump is also provided on the air path 228, and each airbag part 227 is inflated by the air pump and the solenoid valve 229. As for the airbag part 227, it includes a plurality of hexagonal honeycomb chambers, each hexagonal honeycomb chamber is arranged in an array, and adjacent hexagonal honeycomb chambers are connected. Although the above-mentioned detection patch 23 is movably arranged, three of the detection patches 23 correspond to the three airbag part 227 areas respectively.

[0025] Before surgery in the lithotomy position, each detection patch 23 is first attached to the corresponding position of the patient's leg. After the patient's leg is placed in the leg rest slot according to the above requirements and tied with a strap, the leg rest slot contacts the patient's leg, forming a certain covering effect. The solenoid valves 229 corresponding to the three branches are opened, and the air pump starts working, blowing air into each airbag part 227, and the covering plate 22 forms a certain pressure on the patient's leg. Based on this, the detection patches 23 corresponding to the three airbag parts 227 are preset with a first preset value and a second preset value. The first preset value corresponds to the pre-operative period. After each airbag part 227 is inflated until the corresponding detection patch 23 reaches the first preset value, the corresponding solenoid valve 229 is closed. The second preset value is a warning value, which is greater than the first preset value. When the detection value of the detection patch 23 reaches the second preset value and lasts for a certain period of time during the operation, an alarm is issued. The first preset value and the second preset value of the detection patch 23 corresponding to the three airbag parts 227 are different. For example, the first preset value of the distal thigh is 15mmHg, and the second preset value is 30mmHg; the first preset value of the fibula head is 10mmHg, and the second preset value is 20mmHg; the first preset value of the gastrocnemius is 20mmHg, and the second preset value is 40mmHg; for the detection patch 23 corresponding to the popliteal fossa area, it is only set with a warning value, and the warning value is 0mmHg. Therefore, during the inflation process, when the detection patch 23 reaches the first preset value, the solenoid valve 229 of the corresponding airbag part 227 is closed, and when the detection patch 23 corresponding to each airbag part 227 reaches the first preset value, the air pump is turned off, and the patient's lithotomy position is adjusted to the right position. Therefore, when the patient is adjusting the lithotomy position, the covering plate 22 can adapt to patients with various leg shapes through the cooperation of the detection patch 23 and the airbag part 227.

[0026] During the operation, when the pressure value detected by one of the detection patches 23 reaches the second preset value, and the duration exceeds the preset time, such as 10s, that is, when the duration exceeds 10s, the airbag part 227 corresponding to the detection patch 23 is deflated, that is, the corresponding solenoid valve 229 is opened, and the air pump is used to evacuate the air therein until the pressure value of the detection patch 23 reaches the first preset value. When the pressure value of the detection patch 23 corresponding to the popliteal fossa area is greater than 0mmHg and lasts for 10s, it indicates that the patient's leg has shifted during the operation (generally the displacement is relatively small). At this time, the pressure value change of the detection patch 23 corresponding to the first support segment 221 within 10s is judged. For example, when the pressure value of the detection patch 23 is decreasing, it indicates that the patient's leg has moved to the side of the first support segment 221. At this time, the lifting rod 11 is controlled to descend, and when the pressure value of the detection patch 23 corresponding to the popliteal fossa area decreases during the descent process, the pressure value of the detection patch 23 is adjusted to be reduced to 0mmHg, and when the detection patch 23 corresponding to the popliteal fossa area is descent, the pressure value of the detection patch 23 is adjusted to be reduced to 0mmHg. When the pressure value of the detection patch 23 does not change or the change amplitude is very small, an alarm is issued; and when the pressure value of the detection patch 23 corresponding to the first supporting segment 221 increases within 10s, it indicates that the patient's leg moves toward the second supporting segment 222. At this time, the second support rod 113 is controlled to extend to increase the angle between the first supporting segment 221 and the second supporting segment 222. When the pressure value of the detection patch 23 corresponding to the popliteal fossa area decreases during the extension process, the pressure value of the detection patch 23 is adjusted to 0 mmHg. When the pressure value of the detection patch 23 corresponding to the popliteal fossa area does not change or the change amplitude is very small during the extension process, an alarm is issued.

[0027] When the two detection patches 23 corresponding to the second support segment 222 reach the second preset value, the second support rod 113 is controlled to contract, reducing the angle between the first support segment 221 and the second support segment 222, and when the detection patch 23 corresponding to the fibula head reaches the first preset value, the second support rod 113 stops contracting.

[0028] When the blood flow data detected by the blood flow detection element 24 is lower than a preset value and persists for a preset time, such as 10 seconds, an alarm is immediately issued. Furthermore, for obese patients, the first and second preset values of the detection patch 23 and the preset value of the blood flow detection element 24 can be adjusted to 80%, and the preset time can be shortened to 80%.

[0029] See again Figure 1The present invention also provides an operating bed, comprising a bed body and the above-mentioned leg support, wherein the bracket 1 is detachably mounted on the bed body. In this embodiment, the above-mentioned leg support is applied to the operating bed, and two groups of leg supports are provided, which are respectively provided on both sides of the foot of the bed body, and the two brackets 1 are rotatably connected to the corresponding positions of the bed body, and the rotation axis is in the vertical direction. When the patient's legs are supported on the two leg supports, the opening angle between the patient's legs can be adjusted by controlling the bracket 1 to rotate around the bed body, so that the patient can obtain a suitable lithotomy position. Of course, after the opening angle is adjusted appropriately, the bracket 1 and the bed body are locked to prevent the two from rotating relative to each other. In addition, the two groups of leg supports can also be moved along the length direction of the bed body so that the leg supports can adapt to patients of different heights and body shapes.

[0030] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A lithotomy leg support, comprising a bracket and a leg rest assembly, wherein the leg rest assembly is mounted on the bracket, and is characterized in that: The leg rest assembly includes a shelf and a covering plate, wherein the covering plate is mounted on the shelf, and the covering plate includes a first supporting section, a transition section, and a second supporting section, wherein the first supporting section and the second supporting section are connected via the transition section, and both the first supporting section and the second supporting section are inclined downward away from the transition section; The first supporting section, the transition section and the second supporting section are all provided with detection patches for detecting the pressure at corresponding positions of the patient.

2. The lithotomy leg support according to claim 1, characterized in that The first supporting section and the second supporting section both include a contact layer, an airbag layer and an air path layer. The airbag layer is located between the contact layer and the air path layer. The covering plate is installed on the shelf through the air path layer, and an air path connected to the airbag layer is built into the air path layer.

3. The lithotomy leg support according to claim 2, wherein: The airbag layer of the second supporting section includes two relatively independent airbag parts, one of which corresponds to the gastrocnemius muscle of the leg, and the other corresponds to the fibula head of the leg.

4. The lithotomy leg support according to claim 3, characterized in that Two detection patches are provided on the second supporting section, corresponding to the two airbag parts respectively.

5. The lithotomy leg support according to claim 1, wherein: The inclination angle of the first support section is greater than that of the second support section, and the second support section is rotatably connected to the transition section, and the rotation axis is horizontally arranged.

6. The lithotomy leg support according to claim 5, characterized in that The bracket includes a lifting rod and a mounting seat, the lifting rod is mounted on the mounting seat, and the shelf is mounted on the top of the lifting rod.

7. The lithotomy leg support according to claim 6, characterized in that The lifting rod includes a lifting body, a first support rod and a second support rod. A support is provided at the top of the lifting body. The first support rod and the second support rod are both installed on the support. The first support rod is located directly above the support and is supported at the corresponding transition section of the shelf. One end of the second support rod is rotatably connected to the second support section corresponding to the shelf, and the other end is connected to the support.

8. The lithotomy leg support according to claim 7, wherein: The second support rod adopts a telescopic structure, and the second support section is controlled to rotate relative to the transition section by the telescopic movement of the second support rod.

9. The lithotomy leg support according to claim 1, wherein: A blood flow detection element is provided on the first supporting section, and when the blood flow data detected by the blood flow detection element is lower than a preset value and lasts for a preset time, an alarm is directly issued.

10. An operating table, comprising a bed body, characterized in that: It also includes a lithotomy position leg support according to any one of claims 1 to 9, wherein the support is detachably mounted on the bed.

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