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New injection could ease pain after orthopedic surgery

NCT ID NCT07551739

Symptom relief Sponsor: Haisco Pharmaceutical Group Co., Ltd. Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests a new drug called HSK55718 for pain after orthopedic surgery. About 200 adults will receive either the new drug, morphine, or a placebo. Researchers will measure how well it controls pain and how satisfied patients are. The goal is to find a safer or more effective pain relief option.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
HSK55718 injection
What this could lead to
If successful, this could provide a new option for managing pain after surgery with potentially fewer side effects than current treatments.
What could go wrong
This is an early Phase 2 trial with only 200 participants, so results may not apply to everyone. The drug may not work better than existing painkillers or could have unexpected side effects.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 2

Tests whether the treatment actually works, and watches for side effects, in a larger group.

Participants

About 200 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Apr 2026

An estimate. Start dates often move.

Expected to finish

Nov 2026

An estimate. End dates often move.

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: Age ≥18 years old, regardless of gender; 18 kg/m2≤BMI≤30 kg/m2; American Society of Anesthesiologists (ASA) gradeⅰ-ⅲ; Accept abdominal surgery under general anesthesia; Within 4 hours after the end of surgery, NRS≥4 in the resting state at any time; Fully understand and voluntarily participate this trial, and sign the informed consent form; Exclusion Criteria: A history of cardiovascular, respiratory, neurological, or psychiatric diseases that meet the protocol-defined exclusion criteria. Clinically significant abnormalities in laboratory tests during the screening period. A history of severe drug allergy or known allergy to the investigational drug. Continuous use of opioid analgesics for more than 10 days for any reason within 3 months prior to randomization. Use of any medication that may affect analgesia, where the last dose was administered less than 5 half-lives of that drug before randomization. A history of drug abuse, substance abuse, and/or alcohol abuse within the past year. Pregnant or lactating women. Participation in another drug clinical trial within 3 months prior to the screening period. Presence of any sensory dysfunction. Presence of any painful physical condition. Subjects with any other factor considered by the investigator to be ineligible for participation in the trial.

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Pain after surgery

How to take part

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  1. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  2. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

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