Jinan Eighth People's Hospital Successfully Completes the First Micra Leadless Pacemaker Implantation in Laiwu and Gangcheng Districts

Jan 16, 2024 13:17 CST Updated 13:17

Medtronic

Chronic Disease Medical Device and Therapy Developer

Source of the article:Jinan Eighth People's Hospital;Editor: Bai Xiaofei

Reprint Requirements: If the source of the article is indicated at the beginning of the text, it can be reprinted directly.

Heart to the Future

Recently, the Department of Cardiology at Jinan Eighth People's Hospital successfully implanted aMedtronicTheMicra Leadless Pacemaker, the small "capsule" takes root inside the heart, helping patients restore a regular and strong heartbeat.

The leadless pacemaker implantation in this caseLaiwu District and Gangcheng District of Jinan City belong toFirst CaseThis new technology has filled the gap in Micra leadless pacemaker implantation in this region.

# Case Details

The patient is an 88-year-old male admitted to the hospital due to symptoms such as dizziness, chest tightness, and shortness of breath.

After admission, a dynamic electrocardiogram examination was performed, showing sick sinus syndrome and third-degree atrioventricular block.Unable to apply drug treatment, needImplantation of a permanent pacemaker as soon as possible。

Due to the patient's thin physique, history of cerebral infarction, and inability to cooperate with prolonged limb immobilization, conventional pacemaker implantation could easily lead to poor wound healing, pocket infection, and electrode displacement.

# Surgical Planning and Implementation

The Eighth People's Hospital of Jinan CityZou Yanxin, Deputy Chief of the Cardiovascular Medicine Department and Chief Physician, led the team in a meticulous assessment under the guidance of expert Li Bingong from Qingdao Municipal Hospital.Successfully implanted a Micra leadless pacemaker in the patient.。

Surgical ApproachLocal Anesthesia Method`, by the patient`The Femoral Vein as

Access, implanting a tiny "capsule" pacemaker weighing only 2 grams into the optimal pacing position in the heart.

After implantation,The pacemaker has ideal parameters after various functional tests., Follow-up echocardiography indicated that the leadless pacemaker was in normal position, and the patient's symptoms such as dizziness and chest tightness disappeared after the surgery.

After a period of treatment and care, the patient can recover and be discharged from the hospital.

Postoperative Patient's Chest X-ray Image

▲Image SourceSelfThe Eighth People's Hospital of Jinan City

The heart is like the "engine" of the human body. Every beat represents the heart continuously and rhythmically pumping blood to ensure the blood and oxygen supply to tissues and organs throughout the body. When the heart beats too slowly, it can lead to insufficient blood supply, and in severe cases, may cause fainting or even be life-threatening. In such cases, a special device needs to be implanted —

Cardiac Pacemaker, Helping Patients Restore Regular Heartbeat

。

# Micra Leadless Pacemaker

Medtronic'sMicra isThe World's Smallest Heart Pacemaker Currently, only the size of a capsule, with a volume smaller than traditional pacemakers

Reduced by 93%

`, Weight`

Only about 2 grams

。Micra HasPowerful battery life, with a battery lifespan of up to 12 years, compatible with 1.5T/3.0T.

Full-body MRI scans provide stable vital energy for patients with arrhythmia.

Micra has two models —— Micra VR (single-chamber) and Micra AV (dual-chamber).

, which were approved for marketing by the FDA in 2016 and 2020 respectively. In November 2019, Micra VR was officially launched in China and clinically applied in minimally invasive surgical treatment for arrhythmia.

In May 2022, the new generation Micra AV also received NMPA approval and was officially launched in China.

Micra is inserted into the heart through a vein in the leg, requiring no chest incision. Unlike traditional pacemakers, it does not leave scars or lumps under the skin, eliminating potential complications caused by chest incisions and leads running from traditional pacemakers into the heart.

▲Image SourceOfficial CompanyNet

Medtronic's Micra system has currently evolved to include the Micra VR, Micra AV, Micra AV2, and Micra VR2.

The Latest GenerationMicra AV2 and Micra VR2InApproved by the FDA for market launch in May 2023, in

Received European CE Mark Approval in January 2024。

▲Image SourceOfficial CompanyNet

Advantages of Micra

1. Traditional pacemakers leave a noticeable incision and scar on the anterior chest (commonly the left anterior chest), with a larger wound, and older patients take longer to recover.Slower.Micra NoneGuideLead PacemakerNo scars or incisions after implantation, and no limitation on movement, significantly improving the quality of life for patients.

2. Traditional pacemakers may cause lung injury, leading to problems such as pneumothorax during venipuncture, and the difficulty of puncture increases in elderly patients due to their relatively poor vascular condition. The Micra leadless pacemaker can enter through the femoral vein, avoiding the above issues.And avoidAppearPocket complications and lead complications.

3. Traditional pacemakers require 6-12 hours of bed rest after surgery, and the implanted limb must avoid strenuous activity for 3 months.Micra Leadless Pacemaker CanReduce postoperative recovery time,Patients can get out of bed and move around as soon as 6 hours after surgery, or even sooner.

4. Micra With strong battery life, expected to last 12.8 years, and compatibility with innovative features such as 1.5T/3.0T full-body MRI scans.

# Technical Analysis

ForTechnical Composition of Micra, which mainly includesFour Main ComponentsPart, as shown in the figure below:

▲Image SourceOfficial CompanyNet

For the technical breakdown of Micra, its assembly relationship is shown in the figure below:

▲Image SourceOfficial CompanyNet

Overseas Cardiovascular Devices:

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