US-12622725-B2 - CT-guided percutaneous pulmonary nodule cutter and using method thereof

US12622725B2US 12622725 B2US12622725 B2US 12622725B2US-12622725-B2

Abstract

A computed tomography-guided (CT-guided) percutaneous pulmonary nodule cutter includes an outer sheath puncture guide needle and a mesh-shaped electromagnetic cutting system; a hollow sleeve is disposed in the outer sheath puncture guide needle, and the mesh-shaped electromagnetic cutting system is disposed in a space between the outer sheath puncture guide needle and the hollow sleeve, a main body of the mesh-shaped electromagnetic cutting system is made of a polymer shape memory material into a tubular shape; and the tubular shape is integrally formed with two meshes at a position facing a tip end of the outer sheath puncture guide needle. By using the CT-guided percutaneous pulmonary nodule cutter, the patient's economic burden is reduced and the patient's comfort is improved and it is beneficial for promoting CT-guided percutaneous cutting biopsy of the pulmonary nodules.

Inventors

Mailin Chen

Assignees

Mailin Chen

Dates

Publication Date: 20260512
Application Date: 20230613
Priority Date: 20230303

Claims (6)

1 . A percutaneous pulmonary nodule cutter comprises: an outer sheath puncture guide needle, a hollow sleeve disposed in the outer sheath puncture guide needle, and a mesh-shaped electromagnetic cutting system disposed in a space between the outer sheath puncture guide needle and the hollow sleeve; wherein a main body of the mesh-shaped electromagnetic cutting system is made of a polymer shape memory material into a tubular shape, the tubular shape is integrally formed with two meshes at a position facing towards a tip end of the outer sheath puncture guide needle, an inner side of the tubular shape is provided with two metal wires, first ends of the two metal wires are correspondingly disposed at ends of the two meshes and extend out of the two meshes, and second ends of the two metal wires are disposed outside another end of the outer sheath puncture guide needle and correspondingly connected to a positive pole and a negative pole of a power supply through an excitation switch.
2 . The percutaneous pulmonary nodule cutter as claimed in claim 1 , wherein a tail end of the hollow sleeve is connected to a negative pressure suction pump, and the negative pressure suction pump is configured to generate a negative pressure at a front end of the hollow sleeve.
3 . The percutaneous pulmonary nodule cutter as claimed in claim 2 , the tail end of the hollow sleeve is provided with a conversion head, the conversion head is detachably connected with a negative pressure hose, and the negative pressure hose is connected with the negative pressure suction pump.
4 . The percutaneous pulmonary nodule cutter as claimed in claim 1 , wherein in an initial state, the two meshes merge to form a spherical cavity shape; and in an actual use state, the two meshes are squeezed and inserted into the space between the outer sheath puncture guide needle and the hollow sleeve and are pushed to a cutting point, when the compressed and deformed meshes are extended outside, the compressed and deformed meshes gradually return the spherical cavity shape to fix cut pulmonary nodules, and the pulmonary nodules are removed in conjunction with a negative pressure suction fixation at the front end of the hollow sleeve after cut is completed.
5 . The percutaneous pulmonary nodule cutter as claimed in claim 1 , wherein an outer surface of the outer sheath puncture guide needle is provided with a graduated scale.
6 . The percutaneous pulmonary nodule cutter as claimed in claim 1 , wherein a connector is disposed on a surface corresponding to a tail end of the outer sheath puncture guide needle, the connector is configured to connect a handle, and an outer surface of the handle is provided with an anti-slide structure.

Description

TECHNICAL FIELD The disclosure relates to the technical field of a pulmonary nodule cutter, and particularly to a computed tomography-guided (CT-guided) percutaneous pulmonary nodule cutter and a using method thereof. BACKGROUND At present, computed tomography (CT) has found an increasing number of pulmonary nodules with a size less than 10 mm in the lungs, and there are many uncertain pulmonary nodules that require tissue biopsy to determine diagnosis, prognosis, and guide further treatment. However, a commonly used lung biopsy technique in clinic, such as a CT-guided percutaneous puncture, bronchoscopy, thoracoscopy or thoracotomy, has certain shortcomings for a biopsy of the pulmonary nodules, either a diagnostic efficacy is limited, or an invasive trauma is large and a risk is high, and safety, applicability or effectiveness of the commonly used lung biopsy technique affects the biopsy of the pulmonary nodules, and also affect results of pathological testing to a certain extent. At present, there is no safe and effective minimally invasive method or approach suitable for the biopsy of the pulmonary nodules. Therefore, a CT-guided percutaneous pulmonary nodule cutter and a using method of the CT-guided percutaneous pulmonary nodule cutter are provided. SUMMARY A main purpose of the disclosure is to provide a CT-guided percutaneous pulmonary nodule cutter and a using method of the CT-guided percutaneous pulmonary nodule cutter, which is intended to solve or improve at least one of raised in the above-mentioned background technology. In order to achieve the above purpose, the disclosure provides a CT-guided percutaneous pulmonary nodule cutter, which includes an outer sheath puncture guide needle and a mesh-shaped electromagnetic cutting system, a hollow sleeve disposed in the outer sheath puncture guide needle, and the mesh-shaped electromagnetic cutting system is disposed in a space between the outer sheath puncture guide needle and the hollow sleeve, a main body of the mesh-shaped electromagnetic cutting system is made of a polymer shape memory material into a tubular shape; and the tubular shape is integrally formed with two meshes at a position facing a tip end of the outer sheath puncture guide needle. An inner side of the tubular shape is provided with two metal wires, first ends of the two metal wires are correspondingly disposed at ends of the two meshes and extend out of the two meshes, and second ends of the two metal wires are disposed outside another end of the outer sheath puncture guide needle and correspondingly connected to a positive pole and a negative pole of a power supply through an excitation switch. According to the CT-guided percutaneous pulmonary nodule cutter provided in the disclosure, a tail end of the hollow sleeve is connected to a negative pressure suction pump, and the negative pressure suction pump generates a negative pressure at a front end of the hollow sleeve. According to the CT-guided percutaneous pulmonary nodule cutter provided in the disclosure, in an initial state, the two meshes merge to form a spherical cavity shape, and in an actual use state, the two meshes are squeezed and inserted into the space between the outer sheath puncture guide needle and the hollow sleeve and are pushed to a cutting point, when the compressed and deformed meshes are extended outside, the compressed and deformed meshes gradually return the spherical cavity shape to fix cut pulmonary nodules, after cut is completed, a removal of the pulmonary nodules is achieved in conjunction with the negative pressure suction fixation at the front end of the hollow sleeve. The disclosure further provides a using method of the CT-guided percutaneous pulmonary nodule cutter, including the following steps: (1) sleeving the outer sheath puncture guide needle with a chest wall duct dilator, and locating the outer sheath puncture guide needle at an edge of the pulmonary nodules through percutaneous puncture;(2) inserting the hollow sleeve and the mesh-shaped electromagnetic cutting system to the edge of the pulmonary nodules;(3) turning on a negative pressure switch and the mesh-shaped electromagnetic cutting system, and moving the mesh-shaped electromagnetic cutting system;(4) activating the mesh-shaped electromagnetic cutting system and cutting off pulmonary tissue (i.e., pulmonary nodules) after observing an entry of the pulmonary nodules into the two meshes; and(5) returning the outer sheath puncture guide needle and the chest wall duct dilator, and removing a sample of the pulmonary nodules. The disclosure discloses the following technical effects: The purpose of the disclosure is to solve problems of pathological sampling of pulmonary nodules and to ensure comforts of patients, safety of doctors' operation, and effectiveness of pathological material collection. The medical personnel engaged in puncture biopsy can operate the CT-guided percutaneous pulmonary nodule cutter, the operation with the CT-g