A CT-guided percutaneous puncture lung nodule cutter

Abstract

The present invention discloses a CT-guided percutaneous puncture lung nodule cutter, comprising an outer sheath puncture guide needle and a net bag-shaped electromagnetic cutting system, wherein a hollow sleeve is arranged inside the outer sheath puncture guide needle, and the net bag-shaped electromagnetic cutting system is arranged in the space between the outer sheath puncture guide needle and the hollow sleeve, wherein the main body of the net bag-shaped electromagnetic cutting system is made of a tubular polymer shape memory material, and at the same time, the position of the tubular shape facing the tip of the outer sheath puncture guide needle is integrally formed into two net bags; the invention ensures the comfort of patients, the safety of doctors' operation, and the effectiveness of pathological sampling, and allows medical personnel engaged in puncture biopsy to use the pulmonary nodule puncture cutter, which is simple and easy to operate, and has safe and accurate positioning, and significantly improves the success rate of pathological diagnosis of pulmonary nodules, while reducing the economic burden of patients and improving their comfort; it is also conducive to promoting and popularizing CT-guided percutaneous cutting biopsy of pulmonary nodules.

Description

Technical Field

[0001] The invention relates to a pulmonary nodule cutter, in particular to a CT-guided percutaneous puncture pulmonary nodule cutter. Background Art

[0002] At present, CT scans have found an increasing number of lung nodules smaller than 10 mm in size. Among these, many uncertain lung nodules require tissue biopsy to confirm the diagnosis, prognosis, and guide further treatment. However, commonly used lung biopsy techniques in clinical practice, such as CT-guided percutaneous puncture, bronchoscopy, thoracoscopy, or thoracotomy, have certain shortcomings for the biopsy of small lung nodules. They are either limited in diagnostic efficacy or invasive, traumatic, and risky. Their safety, applicability, or effectiveness affect the implementation of the biopsy of small lung nodules and also affect the results of pathological examinations to a certain extent. At present, there is no safe and effective minimally invasive method or method for sampling small lung nodules. Summary of the invention

[0003] The purpose of the present invention is to provide a CT-guided percutaneous puncture lung nodule cutter to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A CT-guided percutaneous puncture lung nodule cutter comprises an outer sheath puncture guide needle and a net bag-shaped electromagnetic cutting system. A hollow sleeve is arranged inside the outer sheath puncture guide needle. The net bag-shaped electromagnetic cutting system is arranged in the space between the outer sheath puncture guide needle and the hollow sleeve. The main body of the net bag-shaped electromagnetic cutting system is made of a tubular polymer shape memory material. At the same time, the position of the tubular shape facing the tip of the outer sheath puncture guide needle is integrally formed into two net bags. Two metal wires are arranged inside the tubular shape, and the ends of the metal wires are located at the ends of the net bag and extend out of the net bag. The other end of the metal wires is located outside the other end of the outer sheath puncture guide needle and is connected to the positive and negative poles of a power supply through an excitation switch.

[0006] As a further solution of the present invention: the tail end of the hollow sleeve is connected to a negative pressure suction pump, and negative pressure is generated at the front end port position by the negative pressure suction pump.

[0007] As a further solution of the present invention: in a natural state, the two net bags are combined to form a spherical cavity shape; in actual use, they are squeezed and inserted into the space between the outer sheath puncture guide needle and the hollow cannula and pushed to the cutting site. When the squeezed and deformed net bag is extended, it gradually recovers its shape and fixes the cut lung nodules. After the cutting is completed, the negative pressure at the 4 ports of the hollow cannula is used for suction and fixation to achieve the removal of the lung nodules.

[0008] The method for using the CT-guided percutaneous puncture pulmonary nodule cutter includes the following steps:

[0009] (1) An outer sheath puncture guide needle with a chest wall duct dilator is used for percutaneous puncture and positioning at the edge of a small lung nodule;

[0010] (2) Inserting a hollow cannula and a net-shaped electromagnetic cutting system to the edge of the small pulmonary nodule;

[0011] (3) Turn on the negative pressure switch and the net-shaped electromagnetic cutting system, and move forward slowly (no more than 10 mm);

[0012] (4) Observe the small lung nodules entering the net bag, activate the net bag-shaped electromagnetic cutting system, and cut off the lung tissue;

[0013] (5) Retract the outer sheath puncture guide needle and chest wall duct dilator and remove the small lung nodule specimen.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The purpose of the present invention is to solve the problem of pathological sampling of pulmonary nodules; it ensures the comfort of patients, the safety of doctors' operations, and the effectiveness of pathological sampling, and allows medical personnel engaged in puncture biopsy to use this pulmonary nodule puncture cutter, which is simple and easy to operate, safe and accurate in positioning, and significantly improves the success rate of pathological diagnosis of pulmonary nodules, while reducing the economic burden of patients and improving their comfort; it is also conducive to promoting and popularizing percutaneous cutting biopsy of pulmonary nodules under CT guidance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of the CT-guided percutaneous pulmonary nodule cutter.

[0017] Figure 2 This is a schematic diagram of the structure of the protruding part of the net bag in the CT-guided percutaneous puncture lung nodule cutter.

[0018] Figure 3 This is a schematic diagram of the structure with the net bag in the CT-guided percutaneous pulmonary nodule cutter fully extended.

[0019] Figure 4 This is a structural schematic diagram of the first step in using the CT-guided percutaneous pulmonary nodule cutter.

[0020] Figure 5 This is a schematic diagram of the structure of the second step when using the percutaneous pulmonary nodule cutter under CT guidance.

[0021] Figure 6 This is a schematic diagram of the structure of the third step when using the percutaneous pulmonary nodule cutter under CT guidance.

[0022] Figure 7 This is a schematic diagram of the structure of the fourth step when using the percutaneous pulmonary nodule cutter under CT guidance.

[0023] Figure 8 This is a schematic diagram of the structure of the fifth step when using the percutaneous pulmonary nodule cutter under CT guidance. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figures 1 to 8 In an embodiment of the present invention, a CT-guided percutaneous puncture lung nodule cutter comprises an outer sheath puncture guide needle 1 and a net-shaped electromagnetic cutting system 2, wherein the outer sheath puncture needle is used to locate the edge of a small lung nodule.

[0026] A hollow sleeve 4 is arranged inside the outer sheath puncture guide needle 1, and a net bag-shaped electromagnetic cutting system 2 is arranged in the space between the outer sheath puncture guide needle 1 and the hollow sleeve 4. The main body of the net bag-shaped electromagnetic cutting system 2 is made of a tubular polymer shape memory material, and at the same time, the position of the tubular shape facing the tip of the outer sheath puncture guide needle 1 is integrally formed into two net bags. In a natural state, the two net bags are combined to form a spherical cavity shape; in actual use, the net bag is squeezed and inserted into the space between the outer sheath puncture guide needle 1 and the hollow sleeve 4 and pushed to the cutting position. When the squeezed and deformed net bag is extended, it gradually restores its shape and fixes the cut pulmonary nodules, and cooperates with the negative pressure suction fixation at the front end port of the hollow sleeve 4 to achieve the removal of the pulmonary nodules.

[0027] The tail end of the hollow sleeve 4 is connected to a negative pressure suction pump, and negative pressure is generated at the front end port position by the negative pressure suction pump.

[0028] Because it is an ellipsoidal net bag, when it is squeezed, the ends open when the middle is compressed, so it can approach the small lung nodules well and complete the wrapping.

[0029] Two metal wires 3 are arranged inside the tubular body, and the ends of the metal wires 3 are located at the ends of the net bag and extend out of the net bag, while the other ends of the metal wires are located outside the other end of the outer sheath puncture guide needle 1 and are connected to the positive and negative poles of the power supply through the excitation switch. By keeping the end of the net bag in contact with the small lung nodule, and then cooperating with the power supply to make the positive and negative poles discharge to achieve cutting, electric cutting can reduce the risk of bleeding, and at the same time, electric coagulation can be performed when bleeding occurs, which has good safety.

[0030] There is a scale on the surface of the outer sheath puncture guide needle 1, the head end of the outer sheath puncture guide needle 1 is the puncture tip, the outer sheath puncture guide needle 1 is a hollow structure, and the surface corresponding to the tail end of the outer sheath puncture guide needle 1 can be fixedly connected to the safety handle, and the excitation switch can be fixed on the safety handle.

[0031] The lung nodule cutting device is an umbrella-shaped negative pressure electric cutting device;

[0032] In actual use, an endoscope is required, and the specific method of using the cutter includes the following steps:

[0033] (1) Figure 4 , an outer sheath puncture guide needle, which is covered with a chest wall duct dilator 5, is positioned at the edge of a small lung nodule during percutaneous puncture;

[0034] (2) Figure 5 , insert the hollow cannula and net-shaped electromagnetic cutting system to the edge of the small pulmonary nodule;

[0035] (3) Figure 6 , turn on the negative pressure switch and cutting device, and move forward slowly (no more than 10mm);

[0036] (4) Figure 7 , observe the small lung nodules entering the cutting device and cutting off the lung tissue;

[0037] (5) Figure 8 , withdraw the puncture needle, expand the chest wall duct, and remove the small lung nodule specimen.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A CT-guided percutaneous puncture lung nodule cutter, characterized in that: include: An outer sheath puncture guide needle (1) and a net bag-shaped electromagnetic cutting system (2), a hollow sleeve (4) is arranged inside the outer sheath puncture guide needle (1), and the net bag-shaped electromagnetic cutting system (2) is arranged in the space between the outer sheath puncture guide needle (1) and the hollow sleeve (4), the main body of the net bag-shaped electromagnetic cutting system (2) is made of a tubular polymer shape memory material, and the position of the tubular shape facing the tip of the outer sheath puncture guide needle (1) is integrally formed into two net bags, two metal wires (3) are arranged inside the tubular shape, and the ends of the metal wires (3) are located at the ends of the net bag and extend out of the net bag, and the other ends of the metal wires are located outside the other end of the outer sheath puncture guide needle (1) and are connected to the positive and negative poles of a power supply through an excitation switch; the tail end of the hollow sleeve (4) is connected to a negative pressure suction pump, and negative pressure is generated at the front end port position by the negative pressure suction pump; In a natural state, the two net bags are combined to form a spherical cavity shape; in actual use, they are squeezed and inserted into the space between the outer sheath puncture guide needle (1) and the hollow sleeve (4) and pushed to the cutting position. When the squeezed and deformed net bag is extended, it gradually recovers its shape and fixes the cut pulmonary nodules. After the cutting is completed, the negative pressure at the port of the hollow sleeve (4) is used for suction fixation to achieve the removal of the pulmonary nodules. The outer surface of the outer sheath puncture guide needle (1) is provided with a scale, the head end of the outer sheath puncture guide needle (1) is a puncture tip, the outer sheath puncture guide needle (1) is a hollow structure, and a connector is installed on the surface corresponding to the tail end of the outer sheath puncture guide needle (1), the connector is used to connect to a safety handle, and the trigger switch is fixed on the safety handle; The method for using the CT-guided percutaneous puncture lung nodule cutter comprises the following steps: (1) An outer sheath puncture guide needle with a chest wall duct dilator is used for percutaneous puncture and positioning at the edge of a small lung nodule; (2) Inserting a hollow cannula and a net-shaped electromagnetic cutting system to the edge of the small pulmonary nodule; (3) Turn on the negative pressure switch and the net-shaped electromagnetic cutting system, and move forward slowly; (4) Observe the small lung nodules entering the net bag, activate the net bag-shaped electromagnetic cutting system, and cut off the lung tissue; (5) Retract the outer sheath puncture guide needle and chest wall duct dilator and remove the small lung nodule specimen.

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