CN215078399U

CN215078399U - Limb tissue microcirculation blood perfusion state monitoring and evaluating system

Info

Publication number: CN215078399U
Application number: CN202120988711.XU
Authority: CN
Inventors: 刘心睿; 杨坤濛; 刘光达; 胡新蕾; 张程
Original assignee: First Hospital Jinlin University
Current assignee: First Hospital Jinlin University
Priority date: 2021-05-10
Filing date: 2021-05-10
Publication date: 2021-12-10
Anticipated expiration: 2031-05-10

Abstract

The utility model relates to a limbs tissue microcirculation blood perfusion state monitoring evaluation system, include: the information acquisition unit is used for acquiring the information of the limb tissues to be detected; the working table is used for bearing the limb tissues to be detected so as to be matched with the signal acquisition unit to acquire information; a workstation, the workstation comprising: the information processing module is used for processing the information acquired by the signal acquisition unit; a display module for displaying the processed information; the information collected by the information collection unit comprises: the method comprises the steps of collecting a blood perfusion fluorescent image of the limb tissue to be detected, and/or a color image of the limb tissue to be detected, and/or a photoplethysmogram signal of the limb tissue to be detected. The utility model discloses enable the aassessment of limbs tissue microcirculation blood perfusion state more accurate, have characteristics such as non-contact, real-time, precision height, visual, with low costs, radiationless.

Description

Limb tissue microcirculation blood perfusion state monitoring and evaluating system

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a monitoring and evaluating system of limb tissue microcirculation blood perfusion state.

Background

Microcirculatory disorders are morphological abnormalities and dysfunction of blood vessels and blood flow that occur at the level of microcirculation. Microcirculation disturbance can cause the blood perfusion of tissues to be obviously reduced, thereby causing a series of ischemia and hypoxic pathological changes, and in severe cases, organ dysfunction or organ failure can be caused. Microcirculatory disturbance often occurs during the process of blood supply to the extremities due to trauma, surgery, low perfusion pressure, diabetic foot, etc.

For example, replantation of severed limbs (finger and toe) refers to a high, fine and fine operation in which the completely or incompletely severed limb is returned to its original position under the aid of an optical magnifier to restore blood circulation, enable it to survive and restore a certain function. The replantation of severed limbs is improved day by day in the field of our country wound, and becomes an effective measure for saving severed limbs (fingers and toes) and recovering the function of the severed limbs (fingers and toes). Replantation of severed limbs typically employs anastomosis of the proximal artery and vein of the severed finger. The blood vessel crisis after the replantation of the severed finger is the biggest obstacle of the replantation survival and the function recovery of the severed finger, generally occurs 1-3 days after the operation, the total incidence rate is reported to be 24%, the survival rate is saved to be 63%, therefore, the comprehensive treatment, the careful nursing and the proper function exercise after the operation are the keys of avoiding the complication of the blood vessel crisis after the replantation of the severed finger, recovering the function of the finger body to the utmost extent and adapting to the requirements of work, life and beauty.

Whether a blood vessel can be connected or not is mainly seen: the condition that the color, skin temperature, finger abdomen tension, capillary vessel reflux, finger tip side incision bleeding and the like of the skin meet the standard indicates the re-implantation survival.

1. The color of the skin. The ruddy limb after replantation indicates smooth blood flow.

2. Skin temperature is also referred to as body temperature. And (4) performing contact detection by using a skin thermometer conventionally after operation, and recording in time. In order to obtain correct finger temperature data, the room temperature should be recorded in time before the implanted finger is detected each time, the finger temperature of healthy finger is detected first, and then the finger temperature of implanted finger is detected again.

3. And (5) observing the capillary vessel refilling. The finger body is ruddy than the normal finger body within a few days after replantation, and the phenomenon of capillary vessel refilling is more obvious than that of the normal finger. When in test, the root of the matchstick or the finger of the tester can be used for slightly pressing the finger abdomen or the nail, the pressed skin or the nail is pale, and once the finger is removed from the compression, the pressed area turns from pale to ruddy within 1-2 seconds, which is called that the capillary vessel refilling test is normal.

4. Finger abdomen tension. The finger abdomen is nearly as strong as the finger or slightly higher than the finger, which is called full. The finger abdomen tension is rarely interfered by external factors, and is a reliable blood circulation observation index.

5. The side of the finger tip is incised to exsanguinate. The small incision of finger tip is the most direct index for clinical judgment of blood circulation in the implanted finger.

At present, the evaluation of the tissue metabolism condition of the severed finger after the severed finger replantation by a doctor mainly depends on the indirect rough judgment of the clinical experience, an accurate and effective evaluation means is lacked, the severed finger cannot be observed in real time, and the later recovery treatment of a patient is not facilitated.

For example, diabetic foot refers to a condition in which the protective function of the lower limbs of diabetic feet is reduced due to neuropathy, and the microcirculation is disturbed due to insufficient arterial perfusion due to macroangiopathy and microangiopathy, so that ulcer and gangrene are generated. The diabetic foot is a serious complication of diabetes, is one of the important reasons for disability and even death of the diabetic patient, causes pain to the patient and adds huge economic burden to the patient.

At present, the evaluation of the tissue metabolism condition of diabetic foot and low-pressure perfusion mainly depends on the clinical experience of medical staff, and an accurate and effective evaluation means is lacked, so that the recovery treatment of patients is not facilitated.

Disclosure of Invention

Preoperative medical imaging techniques include ultrasound US, CT, MRI, etc., by which a physician has access to a clear image. Imaging information is needed by the physician to obtain intraoperative anatomical information for safe and accurate intraoperative procedures, but such preoperative information is difficult to translate directly and apply to intraoperative conditions. By using the real-time operation image system, doctors can timely know and master the conditions of tissues in the operation, such as the information of the blood vessel distribution of specific tissues, the blood vessel smoothness after transplantation and the like, and can perform substantial guidance and assistance on various operation operations.

Indocyanine green (ICG), an indocyanine green (indocyanine green) is a dark green blue pigment in the tricarboxycyanine family, which is water-soluble and lipophilic. Indocyanine green (Indocyanine green) is intravenously injected into a body, is immediately combined with plasma proteins, and is rapidly distributed in blood vessels of the whole body along with blood circulation. Generally, about 97% of normal people are eliminated from blood after intravenous injection for 20 minutes, do not participate in chemical reaction in vivo, do not have enterohepatic circulation, do not have lymphatic countercurrent, and do not excrete from other extrahepatic organs such as kidney. The dye has the characteristics of high binding rate with plasma protein and difficult absorption by liver tissues, so the dye becomes a high-efficiency blood vessel labeling dye.

Indocyanine green has the characteristic of absorbing near infrared light, and 98% of indocyanine green can be combined with plasma protein in blood so as to be retained in a vascular cavity. The indocyanine green absorbs and emits near-infrared light, the absorption spectrum of the indocyanine green in blood is 650-850nm, and the highest absorption peak after intravenous injection is 805 nm; and the emission peak can shift to 820-830nm within a few seconds after injection, and the optimal emission wavelength is about 835 nm. The yield of fluorescence is the greatest when excited by infrared light having a wavelength around 765 nm. The fluorescence yield of indocyanine green increased linearly with increasing concentration of indocyanine green in the blood up to a concentration of 80 mg/L. When the concentration is more than 80mg/L, the fluorescence yield is lowered. Therefore, the concentration of indocyanine green in blood can be judged by detecting the fluorescence yield, so that the tissue recovery condition can be judged.

Based on this, for solving the problem that lack among the prior art to carry out accurate, effective aassessment to the tissue blood supply of the microcirculation obstacle that various reasons lead to, the utility model provides a limbs tissue microcirculation blood fills state monitoring evaluation system, this system is applicable to and leads to the tissue metabolism's of limbs blood supply promptly microcirculation obstacle to various reasons evaluation, can directly indicate target blood vessel development to the severed finger, shows its sufficient state, narrow degree, obstruction position, to affected part velocity of flow aassessment (semi-ration), provides a real-time, accurate assessment means for the recovery condition of severed finger after the severed finger replantation.

The utility model adopts the following technical proposal: a limb tissue microcirculation blood perfusion state monitoring and evaluating system, comprising: the information acquisition unit is used for acquiring the information of the limb tissues to be detected; the working table is used for bearing the limb tissues to be detected so as to be matched with the signal acquisition unit to acquire information; a workstation, the workstation comprising: the information processing module is used for processing the information acquired by the signal acquisition unit; a display module for displaying the processed information; the information collected by the information collection unit comprises: the method comprises the steps of collecting a blood perfusion fluorescent image of the limb tissue to be detected, and/or a color image of the limb tissue to be detected, and/or a photoplethysmogram signal of the limb tissue to be detected.

Preferably, the information processing module performs image fusion on the blood perfusion fluorescence image of the limb tissue to be detected and the color image of the limb tissue to be detected.

Preferably, the method comprises the following steps: the two information acquisition units are used for respectively and simultaneously acquiring the information of the healthy limb tissues of the patient and the corresponding limb tissues to be detected; and the two workbenches are respectively and simultaneously used for bearing healthy limb tissues of patients and corresponding limb tissues to be detected so as to be matched with the two information acquisition units to acquire information.

Preferably, the information acquisition unit includes: the device comprises a bracket 1 and a bearing part 2 connected with the free end of the bracket 1;

the bearing part 2 comprises an end disc 21 close to the workbench and a containing end 22 connected with the end disc 21 and used for containing the first imaging structure 3, and the bracket 1 is connected with the bearing part 2 at the containing end 22; the first imaging structure 3 transmits imaging information to the workstation for processing; the accommodating end 22 is provided with a lens 31 of the first imaging structure 3 near the end disc 21, and a body 32 of the first imaging structure 3 far away from the end disc 21; the end disc 21 is provided with a light source 4 for irradiating light to the limb tissue to be detected, and a filter assembly 5 for filtering incident light.

Preferably, the end disc 21 is circular, and the light source 4 is arranged at the annular part of the circular end disc 21; one end of the lens 31 is arranged in the central area of the circular end disc 21; the filter assembly 5 is disposed at an incident end portion of the lens 31.

Preferably, the end disc 21 further comprises a second imaging structure for imaging the limb tissue to be detected; the second imaging structure transmits imaging information to the workstation for processing; the light source 4 comprises an array of near infrared light emitting diodes.

Preferably, the first imaging arrangement 3 comprises a black and white camera and the second imaging arrangement comprises a color camera 6; the working wavelength of the near-infrared light-emitting diode array is 765 nm.

Preferably, the end disc 21 further includes a distance measuring module 7, configured to obtain distance information between the end disc 21 and the work table, and transmit the distance information to the work station, and the work station adjusts the position of the work table according to the distance information.

Preferably, the information acquisition unit further includes: a photoelectricity volume pulse ripples measuring device 8 for detecting detect the photoelectricity volume pulse ripples signal of waiting to detect limb tissue, photoelectricity volume pulse ripples measuring device 8 include a plurality of dual wavelength pulse ripples sensor 81, dual wavelength pulse ripples sensor 81 including being used for shining the dual wavelength light source that waits to detect limb tissue and being used for gathering and see through wait to detect limb tissue optical signal's photoelectric detector, photoelectric detector turns into the signal of telecommunication with optical signal and transmits for the workstation.

Preferably, the photoplethysmography device 8 includes 5 finger-shaped dual-wavelength pulse wave sensors 81 on the worktable.

Preferably, the workbench comprises a lifting unit 9, a workbench plate 10 connected with the upper part of the lifting unit 9, and a bottom plate 11 connected with the lower part of the lifting unit 9; and at least one layer of X-shaped hinge structures 12, wherein the X-shaped hinge structures 12 comprise two X-shaped hinge forks 121 positioned at two ends, the X-shaped hinge forks 121 comprise two support plates 1211 which are intersected with each other, and the two support plates 1211 are hinged at the middle position; the ends of two supporting plates 1211 on the same side of the X-shaped hinged fork 121 close to the bottom plate 11 are hinged to the bottom plate 11, the ends of the two supporting plates 1211 on the other side are connected through a bottom cross beam 13, two ends of the bottom cross beam 13 are respectively arranged in parallel sliding grooves 14, the sliding grooves 14 are fixedly connected to the bottom plate 11, and the bottom cross beam 13 is driven by a driving control unit 15 to open and close the ends of the supporting plates 1211 connected with the bottom cross beam relative to the ends of the supporting plates 1211 on the other side; the ends of the two support plates 1211 on the same side of the X-shaped hinged fork 121 close to the working table plate 10 are hinged to the bottom of the working table plate 10, the ends of the two support plates 1211 on the other side are slidably connected to two parallel sliding grooves 14 on the bottom of the working table plate 10, and the sliding grooves 14 are fixedly connected to the bottom of the working table plate 10.

Preferably, the lifting unit 9 comprises a plurality of layers of X-shaped hinge structures 12 stacked up and down, and the ends of the same side support plates 1211 of the adjacent X-shaped hinge structures 12 are hinged; the drive control unit 15 includes: the control system comprises a power module 151 and a control module, wherein the control module is used for receiving lifting control information sent by the workstation and sending motion control information to the power module 151; the power module 151 comprises a motor and a screw 1511 driven by the motor, and the screw 1511 drives the bottom beam 13 to reciprocate along the chute 14.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses utilize indocyanine green to have the characteristic of absorbing near-infrared light, establish limbs tissue microcirculation blood perfusion state monitoring evaluation system, make the aassessment of tissue microcirculation blood perfusion state more accurate, contactless, real-time, visual blood flow reflux state of looking over, have contactless, real-time, precision height, visual, with low costs, characteristics such as radiationless; the utility model discloses can also be applied to the vascularity of observing specific tissue, transplant information such as the smooth degree of back blood vessel, still can guide and assist multiple operation.

Drawings

Fig. 1 is a schematic structural view of a system for monitoring and evaluating a microcirculation blood perfusion status of limb tissues according to embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of a signal acquisition unit part in embodiment 1 of the present invention;

fig. 3 is a bottom view of the signal collecting unit of embodiment 1 of the present invention;

wherein: 1. a support; 2. a bearing part; 21. an end plate; 22. a receiving end; 3. a first imaging unit; 31, lens, 32, body; 4. a light source; 5. a filter assembly; 6. a color camera; 7. a distance measurement module;

8. a photoplethysmography device; 81. a dual wavelength pulse wave sensor; 9. a lifting unit;

10. a work table; 11. a base plate; an X-shaped hinge structure; an X-shaped hinge fork 121; 1211. a support plate; 13. a bottom cross member; 14. a chute; 15. a drive control unit; 151. a power module; 1511.

and a lead screw.

Detailed Description

The technical solution of the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.

Example 1

The present invention relates to a limb tissue microcirculation blood perfusion state monitoring and evaluating system as shown in fig. 1-3. Fig. 1 is a schematic structural diagram in an embodiment, and it should be noted that fig. 1 only illustrates the monitoring and evaluating system of the present invention by using a normal finger in a severed finger replantation operation and a severed finger after an operation as an example; the utility model discloses a monitoring evaluation system still is applicable to because wound, other operations, low pressure, the diabetes are sufficient to lead to the aassessment of the tissue metabolism condition that the limbs blood supply was microcirculation perfusion obstacle promptly. In addition, if the expense is not allowed, only the broken finger can be detected, and only one side of the system can realize a preliminary monitoring and evaluating function, for example, the comparison can be carried out according to the experience of the user or the related images of the healthy finger stored in the workstation to assist the judgment of the user.

A limb tissue microcirculation blood perfusion state monitoring and evaluating system is characterized by comprising: the information acquisition unit is used for acquiring the information of the limb tissues to be detected; the working table is used for bearing the limb tissues to be detected so as to be matched with the signal acquisition unit to acquire information; a workstation, the workstation (not shown) comprising: the information processing module is used for processing the information acquired by the signal acquisition unit; a display module for displaying the processed information; the information collected by the information collection unit comprises: the method comprises the steps of collecting a blood perfusion fluorescent image of the limb tissue to be detected, and/or a color image of the limb tissue to be detected, and/or a photoplethysmogram signal of the limb tissue to be detected.

According to the monitoring and evaluating system for the microcirculation blood perfusion state of the limb tissue, the fluorescence image of the blood perfusion, the color image of the limb tissue to be detected and the photoelectric volume pulse wave signal of the limb tissue to be detected are independently or comprehensively processed, so that the target blood vessel can be directly imaged, the filling state, the stenosis degree and the obstruction part of the target blood vessel are displayed, the flow rate and the flow rate of the affected part are evaluated (semi-quantitatively), and a real-time and accurate evaluating means is provided for the recovery condition after the finger amputation is replanted.

The acquired information is processed by the workstation, and the acquired information comprises but is not limited to processing into a blood perfusion fluorescence image, a color image or a fused image of the two images, calculating and displaying quantitative evaluation parameters of the tissue microcirculation blood perfusion state, such as information of the blood flow of severed finger vessels along with the heart pulsation, pulse pigment spectrum and the like.

Therefore, the color images of the blood vessel of the affected part and the organ tissue of the affected part can be fused, so that a user can observe more intuitively and obtain accurate positioning.

Therefore, the comparison information of the healthy limb tissue of the patient and the limb tissue to be detected can be obtained simultaneously, and the user can obtain the accurate comparison information more easily.

the bearing part 2 comprises an end disc 21 close to the workbench and a containing end 22 connected with the end disc 21 and used for containing the first imaging structure 3, and the bracket 1 is connected with the bearing part 2 at the containing end 22; the first imaging structure 3 transmits imaging information to the workstation for processing;

the accommodating end 22 is provided with a lens 31 of the first imaging structure 3 near the end disc 21, and a body 32 of the first imaging structure 3 far away from the end disc 21;

the end disc 21 is provided with a light source 4 for irradiating light to the limb tissue to be detected, and a filter assembly 5 for filtering incident light.

By the arrangement, blood perfusion fluorescence information is convenient to collect.

Therefore, the light can be intensively irradiated on the area to be collected, and the lens 31 is favorable for obtaining sufficient light.

Preferably, the end disc 21 further comprises a second imaging structure for imaging the limb tissue to be detected; the second imaging structure transmits imaging information to the workstation for processing;

the light source 4 comprises an array of near infrared light emitting diodes.

The two imaging structures are simultaneously arranged above the end plate, so that two kinds of imaging information can be simultaneously acquired; the near-infrared light-emitting diode array can be used for exciting indocyanine green in blood vessels to generate fluorescence.

Preferably, the operating wavelength of the near-infrared light-emitting diode array is 765 nm; the first imaging arrangement 3 comprises a black and white camera and the second imaging arrangement comprises a color camera 6.

It should be understood that the near infrared light emitting diode array can be designed to be 48 near infrared light emitting diodes which are uniformly arranged in a ring shape.

The fluorescence quantity of indocyanine green in blood generated under the wavelength of 765nm is maximum, and the indocyanine green is convenient to collect; the black and white camera is used to acquire fluorescence image information in the blood vessel, and the color camera 6 is used to acquire color image information of the organ tissue.

The distance measuring module 7 is used for transmitting the acquired distance information to the workstation, and the workstation conveniently acquires clearer images by analyzing the upper position and the lower position of the definition adjusting workbench of the acquired information of the image acquisition unit.

It should be understood that the shape of the dual wavelength pulse wave sensor 81 can be adaptively changed according to the shape of the organ tissue to be detected.

Preferably, the workbench comprises a lifting unit 9, a workbench plate 10 connected with the upper part of the lifting unit 9, and a bottom plate 11 connected with the lower part of the lifting unit 9;

and at least one layer of X-shaped hinge structures 12, wherein the X-shaped hinge structures 12 comprise two X-shaped hinge forks 121 positioned at two ends, the X-shaped hinge forks 121 comprise two support plates 1211 which are intersected with each other, and the two support plates 1211 are hinged at the middle position;

the ends of two supporting plates 1211 on the same side of the X-shaped hinged fork 121 close to the bottom plate 11 are hinged to the bottom plate 11, the ends of the two supporting plates 1211 on the other side are connected through a bottom cross beam 13, two ends of the bottom cross beam 13 are respectively arranged in parallel sliding grooves 14, the sliding grooves 14 are fixedly connected to the bottom plate 11, and the bottom cross beam 13 is driven by a driving control unit 15 to open and close the ends of the supporting plates 1211 connected with the bottom cross beam relative to the ends of the supporting plates 1211 on the other side;

the ends of the two support plates 1211 on the same side of the X-shaped hinged fork 121 close to the working table plate 10 are hinged to the bottom of the working table plate 10, the ends of the two support plates 1211 on the other side are slidably connected to two parallel sliding grooves 14 on the bottom of the working table plate 10, and the sliding grooves 14 are fixedly connected to the bottom of the working table plate 10.

Preferably, the lifting unit 9 comprises a plurality of layers of X-shaped hinge structures 12 stacked up and down, and the ends of the same side support plates 1211 of the adjacent X-shaped hinge structures 12 are hinged;

the drive control unit 15 includes: the control system comprises a power module 151 and a control module, wherein the control module is used for receiving lifting control information sent by the workstation and sending motion control information to the power module 151;

the power module 151 comprises a motor and a screw 1511 driven by the motor, and the screw 1511 drives the bottom beam 13 to reciprocate along the chute 14.

The utility model discloses limbs tissue microcirculation blood perfusion state monitoring evaluation system working process as follows:

the power supply of each power utilization component is connected, a left hand and a right hand are respectively placed on the left photoelectric volume pulse wave sensing device and the right photoelectric volume pulse wave sensing device, the laser ranging module 7 sends measured distance data information to the workstation through an RS232 cable, the workstation instructs the lifting unit 9 to drive the lead screw 1511 through the motor according to the distance information fed back by the laser ranging module 7 so as to drive the bottom cross beam 13 to reciprocate on the sliding groove 14, and therefore the X-shaped hinged structure 12 is contracted, lifted or opened and lowered to adjust the height of the working table plate 10, the black-white camera device is correctly focused, and the blood perfusion fluorescent image is ensured to be clear.

The optical filter group is integrated at the center of the near-infrared light-emitting diode array (the front end of the lens 31 and the center of the end disc 21), indocyanine green in the blood vessel absorbs near-infrared light emitted by the near-infrared light-emitting diode array and then emits fluorescence, the emitted fluorescence sequentially passes through the optical filter group and the lens 31 and enters the black-and-white camera to form a blood perfusion fluorescence image, and the black-and-white camera uploads the blood perfusion fluorescence image to the workstation through a USB cable (such as a USB3.0 cable).

Meanwhile, the photoplethysmography measuring device 8 uploads the photoplethysmography information measured by the left and right photoplethysmography sensing devices to the workstation;

meanwhile, the color camera 6 collects a color image of the microcirculation blood perfusion state of the tissue to be collected and uploads the color image to a workstation through a USB cable;

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. A limb tissue microcirculation blood perfusion state monitoring and evaluating system is characterized by comprising:

the information acquisition unit is used for acquiring the information of the limb tissues to be detected;

the working table is used for bearing the limb tissues to be detected so as to be matched with the signal acquisition unit to acquire information;

a workstation, the workstation comprising: the information processing module is used for processing the information acquired by the signal acquisition unit; a display module for displaying the processed information;

the information collected by the information collection unit comprises: the method comprises the steps of collecting a blood perfusion fluorescent image of the limb tissue to be detected, and/or a color image of the limb tissue to be detected, and/or a photoplethysmogram signal of the limb tissue to be detected.

2. The system for monitoring and evaluating the microcirculation blood perfusion state of limb tissues as claimed in claim 1, wherein the information processing module performs image fusion on the blood perfusion fluorescent image of the limb tissues to be detected and the color image of the limb tissues to be detected.

3. The system for monitoring and assessing the microcirculation blood perfusion status of limb tissues according to claim 1, which comprises: the two information acquisition units are used for respectively and simultaneously acquiring the information of the healthy limb tissues of the patient and the corresponding limb tissues to be detected; and the two workbenches are respectively and simultaneously used for bearing healthy limb tissues of patients and corresponding limb tissues to be detected so as to be matched with the two information acquisition units to acquire information.

4. A system for monitoring and assessing the microcirculation of limb tissues and blood perfusion status according to any claim 1-3, wherein said information collecting unit includes: the supporting frame comprises a supporting frame and a bearing part connected with the free end of the supporting frame;

the bearing part comprises an end disc close to the workbench and a containing end connected with the end disc and used for containing a first imaging structure, and the bracket is connected with the bearing part at the containing end; the first imaging structure transmits imaging information to the workstation for processing;

a lens of a first imaging structure is arranged at the accommodating end close to the end disc, and a machine body of the first imaging structure is arranged at the position far away from the end disc;

the end disc is provided with a light source for irradiating light to the limb tissue to be detected and a filtering component for filtering incident light.

5. The system for monitoring and assessing the microcirculation blood perfusion status of limb tissues as claimed in claim 4, wherein said end disc is circular, and said light source is disposed at the circular portion of said circular end disc; one end of the lens is arranged in the central area of the annular end disc; the filter assembly is disposed at an incident end of the lens.

6. The system for monitoring and assessing the microcirculation blood perfusion status of limb tissues as recited in claim 4, wherein said end disc further comprises a second imaging structure thereon for imaging the limb tissues to be examined; the second imaging structure transmits imaging information to the workstation for processing;

the light source includes an array of near-infrared light emitting diodes.

7. The limb tissue microcirculation blood perfusion status monitoring and assessment system according to claim 6, wherein the first imaging structure includes a black and white camera and the second imaging structure includes a color camera;

the working wavelength of the near-infrared light-emitting diode array is 765 nm.

8. The system for monitoring and assessing the microcirculation of limb tissues and blood perfusion status of claim 4, wherein the end disc further comprises a distance measuring module for obtaining information on the distance between the end disc and the working table and transmitting the information on the distance to the workstation, and the workstation adjusts the position of the working table according to the information on the distance.

9. A system for monitoring and assessing the microcirculation of limb tissue and blood perfusion status according to any of claims 1-3, wherein said information collecting unit further comprises: a photoelectricity volume pulse ripples measuring device for detecting detect the photoelectricity volume pulse ripples signal of waiting to detect limb tissue, photoelectricity volume pulse ripples measuring device include a plurality of dual wavelength pulse ripples sensor, dual wavelength pulse ripples sensor is including being used for shining the dual wavelength light source of waiting to detect limb tissue and being used for gathering and see through wait to detect limb tissue light signal's photoelectric detector, photoelectric detector turns into the signal of telecommunication with light signal and transmits for the workstation.

10. The system for monitoring and assessing the microcirculation of limb tissues and blood perfusion status of the body as claimed in claim 9, wherein said photoplethysmography measuring device includes 5 finger-shaped dual-wavelength pulse wave sensors on said table.

11. A limb tissue microcirculation blood perfusion status monitoring and evaluating system according to any of claims 1-3, wherein said working table includes a lifting unit, a working table plate connected with the upper part of said lifting unit and a base plate connected with the lower part of said lifting unit;

the X-shaped hinge structure comprises two X-shaped hinge forks positioned at two ends, each X-shaped hinge fork comprises two supporting plates which are mutually crossed, and the two supporting plates are hinged at the middle position;

the end parts of the two supporting plates on the same side of the X-shaped hinged fork, which are close to one side of the bottom plate, are hinged on the bottom plate, the end parts of the two supporting plates on the other side are connected through a bottom cross beam, the two end parts of the bottom cross beam are respectively arranged in parallel sliding grooves, the sliding grooves are fixedly connected to the bottom plate, and the end part of the supporting plate connected with the bottom cross beam is driven by a driving control unit to open and close relative to the end part of the supporting plate on the other side;

the end parts of the two supporting plates on the same side of the X-shaped hinged fork, which are close to one side of the working table plate, are hinged to the bottom of the working table plate, the end parts of the two supporting plates on the other side are connected to two parallel sliding grooves in the bottom of the working table plate in a sliding mode, and the sliding grooves are fixedly connected to the bottom of the working table plate.

12. The system for monitoring and assessing the microcirculation blood perfusion status of limb tissues as claimed in claim 11, wherein said lifting unit comprises a plurality of layers of X-shaped hinge structures which are stacked up and down, and the supporting plates at the same side of the adjacent X-shaped hinge structures are hinged;

the drive control unit includes: the control module is used for receiving lifting control information sent by the workstation and sending motion control information to the power module;

the power module comprises a motor and a lead screw driven by the motor, and the lead screw drives the bottom cross beam to reciprocate along the sliding groove.