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Acute Pulmonary EmbolismTwi-TYPENCT05792397

TwiFlow Thrombectomy Catheter sYstem for Acute Pulmonary Embolism (Twi-TYPE Study)

A study testing TwiFlow-Thrombectomy Catheter System in people with Acute Pulmonary Embolism, run by Morningside (Nantong) Medical Co.,Ltd.

Unknown status

Status not confirmed. The sponsor has not verified this record for over two years, so it may be out of date.

Official record
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Trial summary

As a multicenter prospective single-arm clinical study, the investigators plan to recruit patients with acute pulmonary intravascular embolization from nationwide multi-center hospital organizations in China. Read more about this study

Who is it for?
Ages 18 to 75 years
Conditions the study is for
Acute Pulmonary Embolism
What is being tested?
TwiFlow-Thrombectomy Catheter System
Type of treatment
Medical device
Could I receive a placebo?
No, everyone receives an active treatment
How many people
127 participants
Where
No sites listed yet
Study dates
1 May 2023to 1 May 2026
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 75 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • 18≤ age ≤75, no gender limitation;
  • patients clinically diagnosed as acute pulmonary embolism requiring pulmonary artery thrombosis clearance;
  • RV/LV ratio ≥0.9;
  • Duration of pulmonary embolism symptoms ≤14 days
  • Systolic blood pressure ≥90mmHg
  • Patients who agreed to participate in the study and voluntarily signed the informed consent.

Who cannot join

  • Target vessel diameter < 6.6mm;
  • Calcification, plaque or stenosis of target lesions;
  • Pulmonary arterial hypertension with peak pulmonary arterial pressure >70mmHg;
  • Vasopressor is required after infusion to maintain pressure ≥90mmHg;
  • Hematocrit < 28%;
  • Patients with left bundle branch block;
Show all 18Show fewer
  • A history of chronic left heart failure and left ventricular ejection fraction≤30%;
  • Patients with abnormal renal function (serum creatinine > 1.8 mg/dL or >159umol/L);
  • Patients with known coagulopathy or bleeding tendency (platelet<100×109/L, or INR> 3);
  • Patients who cannot receive antiplatelet or anticoagulant therapy;
  • Patients who underwent cardiovascular or pulmonary open surgery within 7 days before surgery;
  • Patients with intracardiac thrombosis;
  • Patients treated with extracorporeal membrane oxygenation;
  • Patients known to be allergic to contrast agents;
  • Patients with diseases that may cause difficulty in treatment and evaluation (such as malignant tumor, acute infectious disease, sepsis, general condition that cannot tolerate surgery, life expectancy less than 3 months, etc.);
  • Pregnant and lactating women;
  • Patients who are participating in clinical trials of other drugs or medical devices;
  • Other patients deemed unsuitable for the study by the investigator;

Trial locations and contacts

No sites are listed yet.

Ni Linyan, Manager contact

+8613661929821

lyni@siriusmed.cn

Zhuang Hui, Dr. contact

About this study

Official title: A Multicenter Prospective Single-arm Study to Evaluate the Safety and Efficacy of a Novel Transcatheter Pulmonary Thrombectomy System Which Named 'TwiFlow' for Acute Pulmonary Embolism

As a multicenter prospective single-arm clinical study, the investigators plan to recruit patients with acute pulmonary intravascular embolization from nationwide multi-center hospital organizations in China. The investigators use the production of transcatheter pulmonary artery bolt system which named 'TwiFlow Thrombectomy Catheter System' developed by the MorningSide (NanTong) medical device Co., LTD. on pulmonary artery interventional therapy to evaluating the efficacy and safety of this novel system in the treatment of patients with pulmonary intravascular embolization disease.

Read the detailed description

As a multicenter prospective single-arm clinical study, the investigators plan to evaluate the new production's efficacy and safety which named 'TwiFlow-Thrombectomy Catheter System'. This study will be carried out in nationwide multi-center hospital organizations in China. According to the statistical principle, the sample size of this study was estimated, and the final number of selected cases was 127. After screening, all subjects will be treated with transcatheter pulmonary artery thrombectomy system, and clinical follow-up will be conducted at 48 hours, 14 days and 30 days after surgery. Right Ventricular/Left Ventricular decline from baseline to 48 hours after surgery and the incidence of major adverse events (MAE) within 48 hours after surgery were used as primary endpoints. In instrument performance evaluation, the success rate of surgery, postoperative immediate target lesion embolus removal efficiency, pulmonary artery pressure changes before and after operation value, values of arterial oxygen partial pressure changes before and 14 days after operation, death rates related to the equipment in 48 hours after surgery, incident rate of bleeding in 48 hours after operation, postoperative clinical deterioration rate in 48 hours after surgery, postoperative pulmonary vascular injury incidence in 48 hours after surgery, the incidence of heart damage injury in 48 hours after surgery, all-cause death rate in 30 days after surgery, and symptomatic Pulmonary Embolization recurrence rate in 30 days after surgery were secondary endpoints.

Being tested
TwiFlow-Thrombectomy Catheter System

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • TwiFlow-Thrombectomy Catheter SystemDevice

    Patients with acute pulmonary embolism and meeting the conditions of this clinical trial will accept the pulmonary embolism removal operation by the novel device named 'TwiFlow-Thrombectomy Catheter System'

Study groups in NCT05792397
Study groupRoleWhat they receive
treatment groupExperimentalThe arm contains patients with acute pulmonary embolism who undergoing interventional therapy with transcatheter pulmonary embolectomy system which named 'TwiFlow-Thrombectomy Catheter System'
Receives: Device: TwiFlow-Thrombectomy Catheter System

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Right Ventricular/Left Ventricular decline from baseline to 48 hours after surgery

    Right Ventricular (RV) and Left Ventricular (LV) were recorded during the screening period and 48 hours after surgery by echocardiography or pulmonary artery CT (CTPA), and RV/LV and RV/LV reduction were calculated. The target RV/ LV reduction from baseline to 48 hours after surgery was at least 0.2.

    Measured: before and 48 hours after surgery

  2. The incidence of major adverse events (MAE) within 48 hours after surgery

    The incidence of major adverse events (MAE) during and 48 hours after surgery was observed and recorded, and the incidence of MAE was calculated (referring to the definition of MAE). The target incidence of MAE 48 hours after surgery was less than 25%.

    MAE events defined as those occurring within 48 hours of treatment include device-related death, massive bleeding, pulmonary vascular injury, and cardiac injury.

    Haemorrhage: Disabling or life-threatening bleeding, or severe haemodynamic injury.

    Pulmonary vascular injury: Defined as perforation or injury of a major pulmonary artery branch requiring surgical open surgical intervention.

    Cardiac injury: Defined as heart injury requiring surgical open surgical intervention.

    Measured: 48 hours after surgery

Secondary outcomes (7)
  1. instrument performance evaluation

    researchers try to evaluate the twi-system instrument' performance during the operation, so investigators will review whether the device system successfully performed the following steps: 1.Pulmonary thrombectomy system transport to the thromboembolic site (yes or not), 2.The thrombectomy stent was successfully deployed (yes or not), 3.the clot-plug is retracted successfully (yes or not), 4. the thrombectomy device safely removed from the body (yes or not), 5. Thrombus suction catheter delivers to the specified thromboembolic location (yes or not), 6.the thrombus suction catheter delivery system safely removed from the body (yes or not). The study predefine the answer"yes" to 1 point and "no" to 0 point, then investigators will calculate the total scores according above 6 steps and evaluate the twi-system instrument' performance during the operation.

    Measured: intraoperative period

  2. the success rate of surgery

    Surgical success was defined as successful thrombectomy without MAE.

    Measured: intraoperative period

  3. pulmonary artery pressure changes before and after operation value

    Changes in pulmonary artery pressure before and after operation = postoperative pulmonary artery pressure - preoperative pulmonary artery pressure

    Measured: before the pulmonary intravascular embolization removal procedure began and after the embolization removal operation end immediately

  4. values of arterial oxygen partial pressure changes before and after operation

    Preoperative and postoperative arterial oxygen partial pressure = 14 days postoperative arterial oxygen partial pressure - preoperative arterial oxygen partial pressure

    Measured: before the pulmonary intravascular embolization removal procedure began and 14 days after surgery

  5. postoperative clinical deterioration rate in 48 hours after surgery

    Clinical deterioration include instrumentation related events such as unplanned endotracheal intubation, mechanical ventilation, arterial hypotension (>1 hour) or shock, cardiopulmonary resuscitation, significant deterioration of oxygenation, and emergency surgical embolectomy.

    Measured: 48 hours after surgery]

  6. all-cause death rate in 30 days after surgery

    all-cause death

    Measured: 30 days after surgery

  7. symptomatic Pulmonary Embolization recurrence rate in 30 days after surgery

    patients occur pulmonary embolism again and represent related clinical symptoms

    Measured: 30 days after surgery

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted31 Mar 2023
  2. Study start1 May 2023 (estimated)
  3. Primary completion1 May 2024 (estimated)
  4. Study completion1 May 2026 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
127 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05792397
Sponsor's protocol ID
CHENXING-2022-05
Acronym
Twi-TYPE
Status last verified
Mar 2023
First submitted
5 Mar 2023
Last updated
31 Mar 2023
Results posted
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Moore K, Kunin J, Alnijoumi M, Nagpal P, Bhat AP. Current Endovascular Treatment Options in Acute Pulmonary Embolism. J Clin Imaging Sci. 2021 Jan 25;11:5. doi: 10.25259/JCIS_229_2020. eCollection 2021.

    PubMed 33598362
  • Villalba L, Nguyen T, Feitosa RL Jr, Gunanayagam P, Anning N, Dwight K. Single-session catheter-directed lysis using adjunctive power-pulse spray with AngioJet for the treatment of acute massive and submassive pulmonary embolism. J Vasc Surg. 2019 Dec;70(6):1920-1926. doi: 10.1016/j.jvs.2019.03.038. Epub 2019 May 27.

    PubMed 31147112
  • Al-Hakim R, Bhatt A, Benenati JF. Continuous Aspiration Mechanical Thrombectomy for the Management of Submassive Pulmonary Embolism: A Single-Center Experience. J Vasc Interv Radiol. 2017 Oct;28(10):1348-1352. doi: 10.1016/j.jvir.2017.06.025.

    PubMed 28941516
  • Sista AK, Horowitz JM, Tapson VF, Rosenberg M, Elder MD, Schiro BJ, Dohad S, Amoroso NE, Dexter DJ, Loh CT, Leung DA, Bieneman BK, Perkowski PE, Chuang ML, Benenati JF; EXTRACT-PE Investigators. Indigo Aspiration System for Treatment of Pulmonary Embolism: Results of the EXTRACT-PE Trial. JACC Cardiovasc Interv. 2021 Feb 8;14(3):319-329. doi: 10.1016/j.jcin.2020.09.053. Epub 2021 Jan 13.

    PubMed 33454291
  • Wible BC, Buckley JR, Cho KH, Bunte MC, Saucier NA, Borsa JJ. Safety and Efficacy of Acute Pulmonary Embolism Treated via Large-Bore Aspiration Mechanical Thrombectomy Using the Inari FlowTriever Device. J Vasc Interv Radiol. 2019 Sep;30(9):1370-1375. doi: 10.1016/j.jvir.2019.05.024. Epub 2019 Jul 30.

    PubMed 31375449
  • Yasin JT, Davis R, Saemi A, Regunath H, Krvavac A, Saboo SS, Bhat AP. Technical efficiency, short-term clinical results and safety of a large-bore aspiration catheter in acute pulmonary embolism - A retrospective case study. Lung India. 2020 Nov-Dec;37(6):485-490. doi: 10.4103/lungindia.lungindia_115_20.

    PubMed 33154209
  • Tu T, Toma C, Tapson VF, Adams C, Jaber WA, Silver M, Khandhar S, Amin R, Weinberg M, Engelhardt T, Hunter M, Holmes D, Hoots G, Hamdalla H, Maholic RL, Lilly SM, Ouriel K, Rosenfield K; FLARE Investigators. A Prospective, Single-Arm, Multicenter Trial of Catheter-Directed Mechanical Thrombectomy for Intermediate-Risk Acute Pulmonary Embolism: The FLARE Study. JACC Cardiovasc Interv. 2019 May 13;12(9):859-869. doi: 10.1016/j.jcin.2018.12.022.

    PubMed 31072507

Questions about this trial

What is this clinical trial studying?

A study testing TwiFlow-Thrombectomy Catheter System in people with Acute Pulmonary Embolism, run by Morningside (Nantong) Medical Co.,Ltd.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 6 inclusion and 18 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: status not confirmed, as of the sponsor's last update on 31 Mar 2023. Status can change between updates, so confirm with the study contact before making plans.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Results are not available in the source record.

How can a doctor refer a patient or contact the research team?

Contact Ni Linyan, Manager (+8613661929821, lyni@siriusmed.cn), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Right Ventricular/Left Ventricular decline from baseline to 48 hours after surgery (time frame: before and 48 hours after surgery). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT05792397, which also lists 7 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 31 Mar 2023; AzTrials last refreshed its copy on 6 Nov 2026.

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