Minimally invasive pulmonary nodule resection device and resection method

Abstract

The invention relates to the technical field of medical instruments, and discloses a minimally invasive pulmonary nodule resection device and a resection method.An operation handle comprises a guide pipe and an operation end connected with one end of the guide pipe; one end of the flexible cover is provided with an opening, the other end of the flexible cover extends into the operation end of the guide pipe to be connected and is in sliding fit with an inner cavity of the guide pipe, and the operation end controls the flexible cover to slide relative to the guide pipe so that the flexible cover can extend out of the guide pipe; the pair of cutting wires is woven to form a looping structure, the looping structure is arranged at the opening of the flexible cover and can be tightened to close the opening, the two ends of the pair of cutting wires extend into the guide pipe and are connected with the operation end, and the pair of cutting wires is controlled to contract through the operation end to enable the looping structure to be tightened.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a minimally invasive lung nodule resection device and a resection method. Background Art

[0002] The incidence of early-stage lung cancer in China is currently increasing, with a trend toward younger patients. With rising living standards and increasing public health expectations, coupled with advances in technology, the clarity of imaging examinations has significantly improved. Many malignant lung nodules, such as early-stage lung cancer, can now be detected when their diameter is less than 3-4 mm.

[0003] The main treatments for lung nodules / early lung cancer are surgery and ablation. Traditional video-assisted thoracoscopic surgery (VATS) requires the removal of the lung segment or lobe containing the nodule. Even with wedge resection, excessive normal lung tissue may still be removed, leading to loss of lung function. Although the incision of single-port thoracoscopic surgery is only 2-3 cm, deep nodules require the removal of lung segments or even lobes, which has a significant impact on patients with poor lung function reserves (such as the elderly or patients with chronic lung disease). Ablation therapy cannot completely remove the lesions, so it relies on imaging to determine the inactivation effect. The scars formed after ablation may mask signs of recurrence, leading to delayed discovery. In addition, ablation may destroy the tumor structure and increase the risk of metastasis. Therefore, there is an urgent need for more accurate, convenient, and less invasive treatment methods for patients with smaller lung nodules / early lung cancer. Summary of the Invention

[0004] The purpose of the present invention is to provide a minimally invasive pulmonary nodule resection device and resection method, aiming to solve or improve at least one of the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention provides the following solution: The present invention provides a minimally invasive lung nodule resection device, comprising:

[0006] An operating handle, comprising a guide tube and an operating end connected to one end of the guide tube;

[0007] A flexible cover having an opening at one end and the other end extending into and connected to the operating end of the guide tube and slidingly cooperating with the inner cavity of the guide tube, wherein the operating end controls the sliding of the flexible cover relative to the guide tube so that the flexible cover can extend out of the guide tube;

[0008] A pair of cutting wires are woven to form a sleeve structure, and the sleeve structure is arranged at the opening of the flexible cover. The sleeve structure can be tightened to close the opening. The two ends of the pair of cutting wires extend into the guide tube and are connected to the operating end. The operating end is used to control the contraction of the pair of cutting wires so that the sleeve structure can be tightened.

[0009] Optionally, the flexible cover is fixedly connected to one end away from its opening and is connected to a connecting tube. The connecting tube is slidably disposed in the guide tube and is connected to the operating end. The connecting tube is controlled by the operating end to slide relative to the guide tube so that the connecting tube drives the flexible cover to slide synchronously.

[0010] Optionally, a pair of flexible tubes are fixedly connected to the outer side wall of the connecting tube, and the pair of cutting wires are slidably arranged in the pair of flexible tubes.

[0011] Optionally, the flexible cover includes a bracket made of memory metal material, and the bracket can be controlled to switch between an expanded state and a contracted state through the operating end.

[0012] Optionally, the stent is wrapped with a film.

[0013] Optionally, a plurality of connecting rings are circumferentially arranged at the opening of the flexible cover, and a pair of cutting wires are passed through the plurality of connecting rings.

[0014] Optionally, the connecting tube includes an inner tube made of insulating material and an outer tube made of memory metal material.

[0015] Optionally, the cutting wire is made of memory metal.

[0016] Optionally, the flexible tube is made of memory metal.

[0017] The present invention also provides a minimally invasive lung nodule resection method, comprising the following steps:

[0018] Insert the barbed positioning wire into the lung nodule;

[0019] The flexible mask is guided by the positioning wire to cover the lung nodule;

[0020] The operating end is used to control the sleeve structure to tighten until the opening is closed, so that the cutting wire can complete the cutting of the lung nodule.

[0021] The present invention discloses the following technical effects: by using a flexible cover to wrap the lung nodule area, and controlling the contraction of a pair of cutting wires through the operating end, the sleeve structure is tightened to drive the opening of the flexible cover to close, so that the lung nodule area is completely cut by the cutting wire, which can achieve precise positioning and tissue coverage, avoid tissue residue, reduce damage to surrounding healthy tissue, reduce the risk of intraoperative bleeding, and can perform ultra-minimally invasive resection on patients with early lung cancer and high-risk small nodules, providing smaller surgical incisions, less tissue damage, and preserving more healthy lung tissue of the patient, while reducing the patient's postoperative recovery time and discomfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of this application. The exemplary embodiments and descriptions of this application are intended to explain this application and do not constitute an improper limitation on this application. In the accompanying drawings:

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is a schematic diagram of the flexible cover structure of the present invention.

[0025] In the figure: 1. guide tube; 2. operating end; 3. flexible cover; 31. bracket; 32. covering film; 33. connecting ring; 4. cutting wire; 5. connecting tube; 6. flexible tube. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Reference Figure 1-Figure 2 The present invention provides a minimally invasive pulmonary nodule resection device, comprising:

[0029] An operating handle comprising a guide tube 1 and an operating end 2 connected to one end of the guide tube 1;

[0030] A flexible cover 3 is provided with an opening at one end and the other end is inserted into and connected to the operating end 2 of the guide tube 1 and slidably cooperates with the inner cavity of the guide tube 1. The operating end 2 controls the flexible cover 3 to slide relative to the guide tube 1 so that the flexible cover 3 can extend out of the guide tube 1.

[0031] A pair of cutting wires 4 are woven to form a sleeve structure, which is arranged at the opening of the flexible cover 3. The sleeve structure can be tightened to close the opening. The two ends of the pair of cutting wires 4 extend into the guide tube 1 and are connected to the operating end 2. The operating end 2 is used to control the contraction of the pair of cutting wires so that the sleeve structure can be tightened.

[0032] By using a flexible cover 3 to wrap the lung nodule area and controlling the contraction of a pair of cutting wires 4 through the operating end 2, the sleeve structure is tightened to drive the opening of the flexible cover 3 to close, so that the lung nodule area is completely cut by the cutting wire 4, which can achieve precise positioning and tissue coverage, avoid tissue residue, reduce damage to surrounding healthy tissue, and reduce the risk of intraoperative bleeding. It can perform ultra-minimally invasive resection on patients with early lung cancer and high-risk small nodules, provide smaller surgical incisions, less tissue damage, and preserve more healthy lung tissue of the patient, while reducing the patient's postoperative recovery time and discomfort.

[0033] In one embodiment of the present invention, the flexible cover 3 is fixedly connected to one end away from its opening and is connected to a connecting tube 5. The connecting tube 5 is slidably arranged in the guide tube 1 and is connected to the operating end 2. The connecting tube 5 is controlled by the operating end 2 to slide relative to the guide tube 1, so that the connecting tube 5 drives the flexible cover 3 to slide synchronously.

[0034] By setting up the connecting tube 5, it is easy to thread the positioning wire, thereby guiding the flexible cover 3 to accurately locate and wrap the lung nodule, and the connecting tube 5 and the guide tube 1 slide together, and when the connecting tube 5 slides, the flexible cover 3 can be driven to extend or retract into the guide tube 1.

[0035] In one embodiment of the present invention, a pair of flexible tubes 6 are fixedly connected to the outer side wall of the connecting tube 5 , and the pair of cutting wires 4 are slidably disposed in the pair of flexible tubes 6 .

[0036] The cutting wire 4 can be constrained by providing the flexible tube 6 , and the flexible tube 6 can be deformed along with the expansion or contraction of the flexible cover 3 .

[0037] In one embodiment of the present invention, the flexible cover 3 includes a bracket 31 made of a memory metal material, and the bracket 31 can be controlled by the operating end 2 to switch between an expanded state and a contracted state.

[0038] In one embodiment of the present invention, the stent 31 is wrapped with a coating 32 .

[0039] In one embodiment of the present invention, a plurality of connecting rings 33 are circumferentially provided at the opening of the flexible cover 3 , and a pair of cutting wires 4 are passed through the plurality of connecting rings 33 .

[0040] The multiple connecting rings 33 can effectively guide the cutting wire 4 so that the cutting wire 4 can drive the opening of the bracket 31 to contract.

[0041] In one embodiment of the present invention, the connecting tube 5 includes an inner tube made of an insulating material and an outer tube made of a memory metal material.

[0042] In one embodiment of the present invention, the cutting wire 4 is made of memory metal.

[0043] In one embodiment of the present invention, the flexible tube 6 is made of memory metal.

[0044] The memory metal materials used above are all nickel titanium.

[0045] By cooperating with the nickel-titanium bracket 31, the outer tube of the connecting tube 5, the cutting wire 4, and the flexible tube 6, the operating end 2 triggers the shape memory effect through electric heating to achieve fully automatic deformation of "expanding-cutting-resetting", without the need for a complex mechanical transmission structure, and significantly reducing the failure rate of the device.

[0046] Furthermore, the operating end 2 includes a power supply, a controller and multiple control buttons. The bracket is electrically connected to the power supply through the outer tube of the connecting tube 5, and the cutting wire 4 and the flexible tube 6 are both electrically connected to the power supply. The controller is configured to control the temperature of the bracket 31, the outer tube of the connecting tube 5, the cutting wire 4 and the flexible tube 6 by adjusting the output current to trigger its shape memory effect.

[0047] Furthermore, the controller includes a temperature feedback module, which calculates the temperature of each memory metal in real time by detecting the resistance change of the memory metal.

[0048] Furthermore, the controller includes a multi-channel control module to control the actions of each memory metal separately.

[0049] The present invention also provides a minimally invasive lung nodule resection method, comprising the following steps:

[0050] According to the CT guidance system and lung nodule positioning system, the positioning wire with a barb is inserted into the lung nodule;

[0051] The flexible cover 3 is guided by the positioning wire to cover the lung nodule. Specifically, the connecting tube 5 is passed through the positioning wire, and the guide tube 1 is inserted into the body along the positioning wire to reach the lung nodule. Then, the outer tube of the connecting tube 5, the stent 31, the cutting wire and the flexible tube 6 are energized, so that the flexible cover 3 is expanded and pushed forward. The cutting wire is continuously cut while the stent 31 is expanded. After the flexible cover 3 is fully expanded, it forms a "bell-shaped cover" to cover the range of the lung nodule.

[0052] The operating end 2 is used to control the sleeve structure to tighten until the opening is closed, so that the bottom of the "bell-shaped cover" of the flexible cover 3 is tightened to a "cone shape" so that the cutting wire 4 completes the cutting of the lung nodule. Then, the power is disconnected and the flexible cover 3 is withdrawn. The flexible cover 3 wraps the lung nodule specimen and is taken out at the same time.

[0053] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0054] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A minimally invasive lung nodule resection device, characterized in that: include: An operating handle comprising a guide tube (1) and an operating end (2) connected to one end of the guide tube (1); A flexible cover (3) is provided with an opening at one end, and the other end is inserted into and connected to the operating end (2) of the guide tube (1), and is slidably engaged with the inner cavity of the guide tube (1). The operating end (2) controls the sliding of the flexible cover (3) relative to the guide tube (1), so that the flexible cover (3) can extend out of the guide tube (1); A pair of cutting wires (4) are woven to form a sleeve structure, and the sleeve structure is arranged at the opening of the flexible cover (3). The sleeve structure can be tightened to close the opening. The two ends of the pair of cutting wires (4) extend into the guide tube (1) and are connected to the operating end (2). The operating end (2) controls the contraction of the pair of cutting wires (4) to tighten the sleeve structure.

2. The minimally invasive pulmonary nodule resection device according to claim 1, characterized in that: The end of the flexible cover (3) away from the opening thereof is fixedly connected to and communicates with a connecting pipe (5); the connecting pipe (5) is slidably arranged in the guide pipe (1) and connected to the operating end (2); the connecting pipe (5) is controlled by the operating end (2) to slide relative to the guide pipe (1), so that the connecting pipe (5) drives the flexible cover (3) to slide synchronously.

3. The minimally invasive pulmonary nodule resection device according to claim 2, characterized in that: A pair of flexible tubes (6) are fixedly connected to the outer side wall of the connecting tube (5), and a pair of cutting wires (4) are slidably arranged in the pair of flexible tubes (6).

4. The minimally invasive pulmonary nodule resection device according to claim 1, characterized in that: The flexible cover (3) comprises a bracket (31) made of a memory metal material, and the bracket (31) can be controlled to switch between an expanded state and a contracted state via the operating end (2).

5. The minimally invasive pulmonary nodule resection device according to claim 4, characterized in that: The support (31) is wrapped with a coating (32).

6. The minimally invasive pulmonary nodule resection device according to claim 1, characterized in that: A plurality of connecting rings (33) are circumferentially arranged at the opening of the flexible cover (3), and a pair of cutting wires (4) are passed through the plurality of connecting rings (33).

7. The minimally invasive pulmonary nodule resection device according to claim 2, characterized in that: The connecting pipe (5) comprises an inner pipe made of an insulating material and an outer pipe made of a memory metal material.

8. The minimally invasive pulmonary nodule resection device according to claim 1, characterized in that: The cutting wire (4) is made of memory metal.

9. The minimally invasive pulmonary nodule resection device according to claim 3, characterized in that: The flexible tube (6) is made of memory metal.

10. A minimally invasive lung nodule removal method, based on the minimally invasive lung nodule removal device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Insert the barbed positioning wire into the lung nodule; The flexible mask (3) is guided by the positioning wire to cover the lung nodule; The operating end (2) controls the sleeve structure to be tightened until the opening is closed, so that the cutting wire (4) completes the cutting of the lung nodule.

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