A Trial of HR021618 in Postsurgical Pain Management
A Trial of HR021618 in Postsurgical Pain Management
The study is being conducted to evaluate the efficacy, safety of HR021618 and to explore the
 reasonable dosage of HR021618 for Pain Management after Orthopaedic surgery.
Inclusion Criteria:

 1. Able and willing to provide a written informed consent

 2. Subjects requiring elective Orthopaedic surgery

 3. Male or female

 4. Meet the weight standard

 5. Conform to the ASA Physical Status Classification Postoperative randomization criteria
 Exclusion Criteria

 1、 Sufficient pain to require IVanalgesia assessed by NRS ranging 2、 No evidence of organ
 insufficiency, or any other abnormality, during or following surgery

 Exclusion Criteria:

 1. History of major surgery

 2. History of active or high-risk bleeding disorders

 3. History of myocardial infarction or coronary artery bypass

 4. History or clinical manifestations of significant renal, hepatic, cardiovascular,
 metabolic, neurologic, psychiatric, or other condition that would preclude
 participation in the study

 5. Abnormal values in the laboratory

 6. Have a known allergy to meloxicam or any excipient of HR021618, , aspirin, other
 non-steroidal anti-inflammatory drugs (NSAIDs) or to any peri- or postoperative
 medications used in this study

 7. Use other drugs that affect the analgesic effect before randomization, and the time
 from the last use to randomization is shorter than 5 half-lives

 8. Planned/actual admission to the intensive care unit

 9. Pregnant or nursing women

 10. No birth control during the specified period of time

 11. Participated in clinical trials of other drugs (received experimental drugs)

 12. The inestigators determined that other conditions were inappropriate for participation
 in this clinical trial