China's First-Ever 14F Large-Bore Thrombus Aspiration Procedure Marks a New Era in DVT Treatment

Oct 16, 2025 07:31 CST Updated 07:31

Kossel

Vascular Interventional Device Manufacturer and R&D Developer

Embarking on a New Journey of Thrombus Aspiration

China's First Case: 14F Large-Lumen Aspiration

Recently, the peripheral thrombus aspiration system, K-Rhino, independently developed by Kossel Medtech (Suzhou) Co., Ltd.Interventional Vascular Department of Suzhou Municipal Hospital (Professor Jin Yiqi's Team)Successful application. This is the first clinical application in China of the domestically produced peripheral thrombus aspiration system since its market launch on September 2, 2025. It also marks the first use of a 14F aspiration catheter for lower extremity DVT, pioneering large-lumen venous aspiration and embarking on a new journey for large-lumen venous aspiration.

KOSSEL

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· Patient Information and Diagnosis/Treatment Process

Male, 80 years old, admitted to the hospital with the main complaint of "swelling in the left lower limb for one week." Physical examination: stable vital signs, no difficulty breathing, swelling in the left lower limb.

Lower Extremity Venous Ultrasound

"Thrombosis formation in the left common femoral vein and great saphenous vein extending to the popliteal vein and distal veins."

Preoperative Angiography

The patient was placed in the supine position, and a 5F sheath was inserted through the left popliteal vein. Angiography indicated deep vein thrombosis in the left lower limb.

Inferior Vena Cava Filter Placement + Thrombectomy + Anticoagulation

(1) Filter placement: Place an umbrella-shaped long-term vena cava filter to prevent thrombus detachment during aspiration.

(2) Thrombus aspiration: Switch to a 14F short sheath, introduce the K-Rhino 14F aspiration catheter, connect to a negative pressure suction pump, perform antegrade aspiration, aspirate a large amount of fresh thrombus until angiography indicates that blood flow in the deep vein is restored, then remove the catheter and apply compression dressing.

Aspiration Process:

Contrast after aspiration:

Extracted Thrombus:

KOSSEL

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· The Truth About 14F Large-Bore Aspiration

Management of 14F Puncture Site

Professor Yi Qi Jin

14F Popliteal Vein Puncture and Aspiration, Safe and Effective
Simple compression, routine situation, no need for suturing.

Regarding the Issue of 14F Blood Loss

(1) The use of a 14F aspiration catheter improves aspiration efficiency, leaves minimal residue, reduces procedure time, and keeps blood loss within the normal range.

(2) More emphasis on aspiration techniques: When blood is aspirated, the flow rate in the transparent tube can be seen to increase significantly. Aspiration should be stopped, the catheter tip adjusted to the thrombus lesion, and then aspiration performed again.

(3) In vitro experiments

Use 8F, 10F, 12F, and 14F aspiration catheters to aspirate a 7cm long segment of thrombus in the iliac vein, and record the thrombus aspiration time, "total blood loss," and "catheter blockage status."

10F

12F

14F

· Experimental Results

· Experimental Conclusion

The 14F aspiration catheter has higher aspiration efficiency and lower total blood loss compared to 8F, 10F, and 12F, with no occurrence of catheter blockage.

K-Rhino Peripheral Thrombus Aspiration System: With a 14F large-lumen design, it ushers in the "large-lumen" revolution for venous thrombus aspiration.

Expert Profile

Professor Jin Yiqi

Suzhou Municipal Hospital

Director of the Department of Interventional Vascular Surgery, Suzhou Municipal Hospital, Chief Physician, Associate Professor, Master's Supervisor

Engaged in interventional vascular specialty for over two decades

Member of the Complications Group of the Vascular Surgery Branch of the Chinese Medical Doctor Association

Member of the Vascular Surgery Physician Branch of the Jiangsu Province Medical Association

Vice Chairman of the Vascular Surgery Branch of the Jiangsu Research Society

Vice Chairman of the Geriatric Medicine Association of Jiangsu Province, Pan-Vascular Branch

Deputy Group Leader of the Aortic Group, Vascular Surgery Branch, Jiangsu Medical Association

Member of the Stroke Branch of Jiangsu Medical Association

Deputy Group Leader of the Vascular Group, Intervention Branch, Jiangsu Medical Association

Standing Committee Member of the Interventional Physicians Branch of Jiangsu Province Medical Association

President of the Interventional Physicians Branch of the Suzhou Medical Association

Member of the Interventional Physicians Branch of the Suzhou Medical Association

Vice Chairman of the Pulmonary Embolism Expert Committee of the Suzhou City Hospital Association

Member of Suzhou Municipal Government Procurement Expert Database

Proficient in the minimally invasive treatment of aortic and peripheral arterial/venous diseases. Rich experience in the diagnosis and treatment of aortic aneurysms, aortic dissections, lower extremity arteriosclerosis occlusion, diabetic foot, varicose veins of the lower extremities, deep vein thrombosis, and peripheral vascular malformations. Has received multiple provincial and municipal awards, including the Jiangsu Province New Technology Introduction Award and the Suzhou City New Technology Introduction Award. Led and participated in several provincial and municipal research projects. Published numerous SCI and core journal papers as the first author and corresponding author, in top regional surgical journals such as ANN SURG, EJVES, CVIR, JVIR, etc. Contributed to the books "Comprehensive Diagnosis and Interventional Treatment of Surgical Diseases" and "Imaging Diagnosis and Interventional Treatment."

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