An interventional study of Pulse electric field ablation system and Sham Procedure in Chronic Bronchitis and COPD (Chronic Obstructive Pulmonary Disease), sponsored by Suzhou Hengruihongyuan Medical Technology Co. LTD. Recruiting at 13 sites in China. Open to participants aged 35 Years to 80 Years. Per ClinicalTrials.gov, last updated 2025-09-02.
Sponsored by Suzhou Hengruihongyuan Medical Technology Co. LTD · Not applicable, Interventional, and Treatment
This is a prospective, randomized, parallel group, sham-controlled, multicenter clinical trial. The objective is to evaluate the safety and effectiveness of pulsed electric field ablation system manufactured by Suzhou Hengruihongyuan Medical Technology Co., Ltd. for the treatment of the symptoms of chronic bronchitis in adult COPD patients with moderate to severe chronic bronchitis. A total of 210 patients will be randomized into the experimental group and the sham group (2:1).
209 studies on the registry are indexed under Bronchitis, Chronic; 14 are open to participants now.
This study's planned enrollment of 210 is above the median of 101 across 154 interventional studies indexed under Bronchitis, Chronic.
Browse Bronchitis, Chronic studies →Suzhou Hengruihongyuan Medical Technology Co. LTD is the lead sponsor of 8 studies on the registry; 3 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
From a breathing test (spirometry): how much air you can blow out in the first second. Often given as a percentage of what is expected for your age, height and sex.
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
A blood test of average blood sugar over the past two to three months, given as a percentage or in mmol/mol. 6.5% (48 mmol/mol) or more is the usual threshold for diabetes, normally confirmed by a second test.
A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.
Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
FEV1
From a breathing test (spirometry): how much air you can blow out in the first second. Often given as a percentage of what is expected for your age, height and sex.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Corticosteroids (steroids)
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Clinically significant
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
HbA1c
A blood test of average blood sugar over the past two to three months, given as a percentage or in mmol/mol. 6.5% (48 mmol/mol) or more is the usual threshold for diabetes, normally confirmed by a second test.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Autoimmune disease
A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.
Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Immunosuppression
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Investigational drug or device
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Device: Pulse electric field ablation system
Device: Sham Procedure
Bronchial rheoplasty (BR) is a staged procedure wherein pulsed electric fields are delivered to the right lung in the first treatment visit, and then the left lung is treated approximately 1 month later.
Staged sham procedure: the catheter is inserted into the right lung, but energy is not delivered; then the same steps are performed in the left lung approximately 1 month later (no energy is delivered to the patient).
COPD Assessment Test (CAT) Score
Mean change from baseline in the COPD Assessment Test (CAT) total score, the total CAT score ranges from 0 to 40, where lower scores represent lower symptom burden
Time frame: 6 months
COPD Assessment Test (CAT) score
Mean change from baseline in the COPD Assessment Test (CAT) total score, the total CAT score ranges from 0 to 40, where lower scores represent lower symptom burden.
Time frame: 3 and 12 months
COPD Assessment Test (CAT) Score (items 1 and 2)
Mean change from baseline in mean total scores for items 1 and 2 of the bilateral CAT scores (ranges from 0 to 10), where lower scores represent lower symptom burden.
Time frame: 3, 6 and 12 months
St. George Respiratory Questionnaire (SGRQ-C)
Change from baseline in the total score of the COPD of the St. George Respiratory Questionnaire (SGRQ-C), the total score ranges from 0 to 100, where lower scores represent lower symptom burden.
Time frame: 6 and 12 months
Change from baseline in Modified Medical Research Council dyspnea scale (mMRC) scores
Change from baseline in Modified Medical Research Council dyspnea scale (mMRC) scores, rated on a scale from 0 to 4, where lower grades represent lower symptom burden.
Time frame: 3, 6 and 12 months
COPD Exacerbations
Rate of moderate and severe COPD exacerbations.
Time frame: 12 months
Pulmonary Function (FEV1)
Changes from baseline in forced expiratory volume in the first second (FEV1) during a pulmonary function test (PFT).
Time frame: 3, 6 and 12 months
Pulmonary Function (FEV1 /FVC ratio)
Changes from baseline in the FEV1 /FVC ratio during a pulmonary function test (PFT).
Time frame: 3, 6 and 12 months
The six minute walking test (6MWT)
Change from baseline in the 6-minute walk test.
Time frame: 6 and 12 months
Technical success rate
Success defined as: * Experimental group: Successful placement of the device, successful discharge, and successful withdrawal. * Control group: Successful placement of the device, and successful withdrawal. Calculation method: Patients with technical success/ total cases of subjects in the same group x 100%.
Time frame: Approximately 15-minutes after device removal
Start is estimated for Sep 2025; primary completion for Aug 2026, 11 months later.
Of 24 interventional studies with no phase under Bronchitis, Chronic, half reached primary completion within 35 months of starting (the median), counting those still running; a quarter within 28 and three quarters within 47. This study's planned 11 months is below that.
How these figures are worked out, and which studies are left out of them.
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Suzhou Hengruihongyuan Medical Technology Co. LTD