\. Patients with acute lower limb ischemia or acute exacerbation of chronic lower limb ischemia. 2. Vascular reconstruction (bypass or intravascular therapy) or sympathetic resection or amputation was performed within 4 weeks prior to the signing of the informed consent. 3. Due to surgical operation, the patient is still in the postoperative risk period, and the researcher judges that the patient is not suitable for the test. 4. Main-iliac artery stenosis 70%. 5. Patients with ischemic ulcer of lower extremity. 6. NYHA classification of cardiac function is classified as grade (see annex 1 for specific classification criteria). 7. Patients with unstable angina pectoris due to cerebral infarction, cerebral hemorrhage and myocardial infarction within 3 months before signing the informed consent. 8. Refractory hypertension (taking three or more antihypertensive drugs, systolic blood pressure 180mmHg or diastolic blood pressure 110mmHg). 9. Proliferative retinopathy and retinopathy examination is not available. 10. Inability to accurately describe symptoms and emotions. 11. Severe liver disease with uncompensated cirrhosis, jaundice, ascites or hemorrhagic varices. 12. Current recipients of immunosuppressants or chemoradiotherapy. 13. Anti-hiv antibody positive, anti-hepatitis c antibody positive and hepatitis b surface antigen positive (if the subject is HBsAg positive and HBV DNA in peripheral blood is combined, the researcher believes that the subject's chronic hepatitis b is stable and will not increase the risk of the subject, the subject can be selected). 14. Results of laboratory examination during screening period: hemoglobin <80g/L, white blood cell count < 3.0109 /L, platelet <75 109/L, upper limit of normal AST or ALT> 3 times, upper limit of normal serum creatinine > 2.5 times, or other laboratory examination indicators appear abnormal that researchers think may affect the evaluation of test results. 15. Patients with poor blood glucose control after treatment (hemoglobin a1c >10%). 16. Previously diagnosed with malignant tumor, or any of the following test results determined by the investigator to be at risk of tumor: fecal occult blood test;Chest X-ray examination or chest CT examination;Alpha-fetoprotein (AFP), carcinoembryonic antigen (CEA) and ca19-9;Male subjects, prostate specific antigen test (PSA, free PSA);Female subjects, cervical smear (Pap), mammography/b-ultrasound and ca-125 examination;The investigators determined that additional tests were necessary to eliminate the tumor risk. 17. In the opinion of the investigators, patients with comorbidities that affect safety and efficacy evaluation, or with a predicted survival of less than 12 months. 18. Frequent drinkers within the 12 months prior to the signing of the informed consent, i.e., those who drank more than 14 units of alcohol per week (1 unit =360 mL beer or 45 mL alcohol of 40% spirits or 150 mL wine) or substance abusers. 19. Participate in other clinical trials within 3 months before signing the informed consent
Yes for \. Patients with acute lower limb ischemia or acute exacerbation of chronic lower limb ischemia. 2. Vascular reconstruction (bypass or intravascular therapy) or sympathetic resection or amputation was performed within 4 weeks prior to the signing of the informed consent. 3. Due to surgical operation, the patient is still in the postoperative risk period, and the researcher judges that the patient is not suitable for the test. 4. Main-iliac artery stenosis 70%. 5. Patients with ischemic ulcer of lower extremity. 6. NYHA classification of cardiac function is classified as grade (see annex 1 for specific classification criteria). 7. Patients with unstable angina pectoris due to cerebral infarction, cerebral hemorrhage and myocardial infarction within 3 months before signing the informed consent. 8. Refractory hypertension (taking three or more antihypertensive drugs, systolic blood pressure 180mmHg or diastolic blood pressure 110mmHg). 9. Proliferative retinopathy and retinopathy examination is not available. 10. Inability to accurately describe symptoms and emotions. 11. Severe liver disease with uncompensated cirrhosis, jaundice, ascites or hemorrhagic varices. 12. Current recipients of immunosuppressants or chemoradiotherapy. 13. Anti-hiv antibody positive, anti-hepatitis c antibody positive and hepatitis b surface antigen positive (if the subject is HBsAg positive and HBV DNA in peripheral blood is combined, the researcher believes that the subject's chronic hepatitis b is stable and will not increase the risk of the subject, the subject can be selected). 14. Results of laboratory examination during screening period: hemoglobin <80g/L, white blood cell count < 3.0109 /L, platelet <75 109/L, upper limit of normal AST or ALT> 3 times, upper limit of normal serum creatinine > 2.5 times, or other laboratory examination indicators appear abnormal that researchers think may affect the evaluation of test results. 15. Patients with poor blood glucose control after treatment (hemoglobin a1c >10%). 16. Previously diagnosed with malignant tumor, or any of the following test results determined by the investigator to be at risk of tumor: fecal occult blood test;Chest X-ray examination or chest CT examination;Alpha-fetoprotein (AFP), carcinoembryonic antigen (CEA) and ca19-9;Male subjects, prostate specific antigen test (PSA, free PSA);Female subjects, cervical smear (Pap), mammography/b-ultrasound and ca-125 examination;The investigators determined that additional tests were necessary to eliminate the tumor risk. 17. In the opinion of the investigators, patients with comorbidities that affect safety and efficacy evaluation, or with a predicted survival of less than 12 months. 18. Frequent drinkers within the 12 months prior to the signing of the informed consent, i.e., those who drank more than 14 units of alcohol per week (1 unit =360 mL beer or 45 mL alcohol of 40% spirits or 150 mL wine) or substance abusers. 19. Participate in other clinical trials within 3 months before signing the informed consent exclusion criteria 1
No for \. Patients with acute lower limb ischemia or acute exacerbation of chronic lower limb ischemia. 2. Vascular reconstruction (bypass or intravascular therapy) or sympathetic resection or amputation was performed within 4 weeks prior to the signing of the informed consent. 3. Due to surgical operation, the patient is still in the postoperative risk period, and the researcher judges that the patient is not suitable for the test. 4. Main-iliac artery stenosis 70%. 5. Patients with ischemic ulcer of lower extremity. 6. NYHA classification of cardiac function is classified as grade (see annex 1 for specific classification criteria). 7. Patients with unstable angina pectoris due to cerebral infarction, cerebral hemorrhage and myocardial infarction within 3 months before signing the informed consent. 8. Refractory hypertension (taking three or more antihypertensive drugs, systolic blood pressure 180mmHg or diastolic blood pressure 110mmHg). 9. Proliferative retinopathy and retinopathy examination is not available. 10. Inability to accurately describe symptoms and emotions. 11. Severe liver disease with uncompensated cirrhosis, jaundice, ascites or hemorrhagic varices. 12. Current recipients of immunosuppressants or chemoradiotherapy. 13. Anti-hiv antibody positive, anti-hepatitis c antibody positive and hepatitis b surface antigen positive (if the subject is HBsAg positive and HBV DNA in peripheral blood is combined, the researcher believes that the subject's chronic hepatitis b is stable and will not increase the risk of the subject, the subject can be selected). 14. Results of laboratory examination during screening period: hemoglobin <80g/L, white blood cell count < 3.0109 /L, platelet <75 109/L, upper limit of normal AST or ALT> 3 times, upper limit of normal serum creatinine > 2.5 times, or other laboratory examination indicators appear abnormal that researchers think may affect the evaluation of test results. 15. Patients with poor blood glucose control after treatment (hemoglobin a1c >10%). 16. Previously diagnosed with malignant tumor, or any of the following test results determined by the investigator to be at risk of tumor: fecal occult blood test;Chest X-ray examination or chest CT examination;Alpha-fetoprotein (AFP), carcinoembryonic antigen (CEA) and ca19-9;Male subjects, prostate specific antigen test (PSA, free PSA);Female subjects, cervical smear (Pap), mammography/b-ultrasound and ca-125 examination;The investigators determined that additional tests were necessary to eliminate the tumor risk. 17. In the opinion of the investigators, patients with comorbidities that affect safety and efficacy evaluation, or with a predicted survival of less than 12 months. 18. Frequent drinkers within the 12 months prior to the signing of the informed consent, i.e., those who drank more than 14 units of alcohol per week (1 unit =360 mL beer or 45 mL alcohol of 40% spirits or 150 mL wine) or substance abusers. 19. Participate in other clinical trials within 3 months before signing the informed consent exclusion criteria 1
Not sure for \. Patients with acute lower limb ischemia or acute exacerbation of chronic lower limb ischemia. 2. Vascular reconstruction (bypass or intravascular therapy) or sympathetic resection or amputation was performed within 4 weeks prior to the signing of the informed consent. 3. Due to surgical operation, the patient is still in the postoperative risk period, and the researcher judges that the patient is not suitable for the test. 4. Main-iliac artery stenosis 70%. 5. Patients with ischemic ulcer of lower extremity. 6. NYHA classification of cardiac function is classified as grade (see annex 1 for specific classification criteria). 7. Patients with unstable angina pectoris due to cerebral infarction, cerebral hemorrhage and myocardial infarction within 3 months before signing the informed consent. 8. Refractory hypertension (taking three or more antihypertensive drugs, systolic blood pressure 180mmHg or diastolic blood pressure 110mmHg). 9. Proliferative retinopathy and retinopathy examination is not available. 10. Inability to accurately describe symptoms and emotions. 11. Severe liver disease with uncompensated cirrhosis, jaundice, ascites or hemorrhagic varices. 12. Current recipients of immunosuppressants or chemoradiotherapy. 13. Anti-hiv antibody positive, anti-hepatitis c antibody positive and hepatitis b surface antigen positive (if the subject is HBsAg positive and HBV DNA in peripheral blood is combined, the researcher believes that the subject's chronic hepatitis b is stable and will not increase the risk of the subject, the subject can be selected). 14. Results of laboratory examination during screening period: hemoglobin <80g/L, white blood cell count < 3.0109 /L, platelet <75 109/L, upper limit of normal AST or ALT> 3 times, upper limit of normal serum creatinine > 2.5 times, or other laboratory examination indicators appear abnormal that researchers think may affect the evaluation of test results. 15. Patients with poor blood glucose control after treatment (hemoglobin a1c >10%). 16. Previously diagnosed with malignant tumor, or any of the following test results determined by the investigator to be at risk of tumor: fecal occult blood test;Chest X-ray examination or chest CT examination;Alpha-fetoprotein (AFP), carcinoembryonic antigen (CEA) and ca19-9;Male subjects, prostate specific antigen test (PSA, free PSA);Female subjects, cervical smear (Pap), mammography/b-ultrasound and ca-125 examination;The investigators determined that additional tests were necessary to eliminate the tumor risk. 17. In the opinion of the investigators, patients with comorbidities that affect safety and efficacy evaluation, or with a predicted survival of less than 12 months. 18. Frequent drinkers within the 12 months prior to the signing of the informed consent, i.e., those who drank more than 14 units of alcohol per week (1 unit =360 mL beer or 45 mL alcohol of 40% spirits or 150 mL wine) or substance abusers. 19. Participate in other clinical trials within 3 months before signing the informed consent exclusion criteria 1