Pulmonary nodule puncture positioning device

Abstract

The pulmonary nodule puncture positioning device comprises an auxiliary seat, an octagonal frame is arranged in the center of the auxiliary seat, a center hole is formed in the center of the octagonal frame, a disc seat is arranged on the auxiliary seat, a guide hole is formed in the center of the disc seat and vertically corresponds to the center hole, a puncture needle is arranged in the guide hole in a sliding fit mode, and the puncture needle is of a hollow structure. The telescopic tube is slidably matched in the puncture needle, a positioning part is arranged at one end of the puncture needle, a pushing cap is matched with one end, away from the positioning part, of the puncture needle, and one end of the telescopic tube is matched with the pushing cap. The device has the advantages that the device is suitable for tiny or deep pulmonary nodules with the diameter smaller than or equal to 2 cm, the accuracy and stability of puncture positioning are remarkably improved through the innovative mechanical structure and material design, and the problem of positioning drift caused by lung tissue elasticity is solved through the memory alloy umbrella-shaped anchoring structure; and the visual high-density metal marking piece is matched to assist in image confirmation, so that the operation difficulty is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a lung nodule puncture positioning device. Background Art

[0002] Lung cancer is one of the malignant tumors with the highest morbidity and mortality in the world. Early detection and treatment are the key to improving the prognosis of patients. With the popularization of low-dose spiral CT technology, the detection rate of small lung nodules has increased significantly, but about 40% of nodules require further puncture biopsy to clarify the pathological nature.

[0003] The existing lung nodule localization technology has the following problems: for example, the existing puncture needle is easily displaced due to respiratory movement or tissue elasticity after positioning, and needs to be adjusted repeatedly, increasing the patient's pain.

[0004] In view of the shortcomings of the above scheme in actual production and implementation, it has been revised and improved. At the same time, in the spirit and concept of seeking excellence, with the assistance of professional knowledge and experience, and after many ingenuity and experiments, the present invention was created. A lung nodule puncture positioning device is provided to solve the above problems. Summary of the invention

[0005] The present invention provides a lung nodule puncture positioning device, which solves the problems in the prior art.

[0006] The technical solution of the present invention is implemented as follows: a pulmonary nodule puncture positioning device, comprising: an auxiliary seat, an octagonal frame is arranged at the center of the auxiliary seat, a center hole is arranged at the center of the octagonal frame, a disc seat is arranged on the auxiliary seat, a guide hole is arranged at the center of the disc seat, the guide hole corresponds to the center hole up and down, a puncture needle is slidably fitted in the guide hole, the puncture needle is a hollow structure, the telescopic tube is slidably fitted in the puncture needle, and a positioning piece is arranged at one end of the puncture needle; One end of the puncture needle away from the positioning piece is matched with a pushing cap, and one end of the telescopic tube is matched with the pushing cap.

[0007] As a preferred embodiment of a lung nodule puncture positioning device, a positioning column is provided on the auxiliary seat, a sliding sleeve is provided at the bottom of the disc seat, and a tube cap is provided at the top. The positioning column slides in the sliding sleeve and extends upward, and the extended end is threaded with the tube cap.

[0008] With the above solution, the center hole of the auxiliary seat is used to locate the marking point to achieve subsequent puncture.

[0009] As a preferred embodiment of a pulmonary nodule puncture and positioning device, the hollow inner diameter of the puncture needle is 0.8-1.2 mm.

[0010] As a preferred embodiment of a lung nodule puncture positioning device, the positioning piece is made of a nickel-titanium alloy with a phase change temperature of 30-40°C, has an outer diameter of 2-3 mm in a natural state, and is stored in the inner cavity of the puncture needle after being compressed.

[0011] As a preferred embodiment of a lung nodule puncture positioning device, the positioning piece forms an umbrella-shaped structure after being unfolded, and the end of the positioning piece is embedded with a high-density metal material, and the CT value is ≥2000HU.

[0012] The above scheme is adopted, and nickel-titanium alloy with a phase transition temperature range of 30-40°C is selected. By utilizing its superelasticity and shape memory effect, when the temperature reaches the phase transition temperature, the positioning part quickly recovers from the compressed state to the preset umbrella-shaped structure to form multi-point anchoring with the lung tissue. The marks formed by the high-density metal material are conducive to clear development under CT images, thereby achieving accurate anchoring.

[0013] As a preferred embodiment of the pulmonary nodule puncture positioning device, a hollow stud is provided at one end of the puncture needle, and the push cap is threadably matched with the hollow stud.

[0014] As a preferred embodiment of a lung nodule puncture positioning device, an extension column is provided at one end of the telescopic tube, a protrusion is provided at the end of the extension column, a limiting ring is provided in the pushing cap, and the extension column passes through the limiting ring and is fixedly engaged with the protrusion.

[0015] By adopting the above solution, the pushing cap moves spirally to realize the pushing of the positioning member.

[0016] A method for locating a lung nodule comprises the following steps: S1, preoperative CT three-dimensional reconstruction to plan the puncture path; S2, the puncture needle is inserted along the path to the edge of the nodule; S3, pushing the positioning member to the target position and releasing it to form an anchoring structure; S4. After the positioning accuracy is confirmed by imaging, the diagnosis and treatment operation is completed.

[0017] After adopting the above technical solution, the beneficial effect of the present invention is: the device is used for accurate positioning of lung nodules, especially for tiny or deep lung nodules with a diameter of ≤2 cm, and through innovative mechanical structure and material design, the accuracy and stability of puncture positioning are significantly improved.

[0018] The memory alloy umbrella-shaped anchoring structure solves the positioning drift problem caused by the elasticity of lung tissue; The linkage design of the hollow puncture needle and the push component ensures that the positioning process is completed in one go; Visual high-density metal markers assist in image confirmation, reducing the difficulty of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 This is a schematic diagram of the structure of the lung nodule puncture positioning device of the present invention; Figure 2 This is a schematic diagram of the structure of the matching relationship between the auxiliary seat and the disc seat of the present invention; Figure 3 This is a cross-sectional view of the matching relationship between the puncture needle, the positioning member and the push cap of the present invention; Figure 4 It is a schematic diagram of the structure of the cooperation relationship between the telescopic tube, the positioning member and the pushing cap of the present invention; In the figure, 1- auxiliary seat; 2- octagonal frame; 3- center hole; 4- positioning column; 5- disc seat; 6- sliding sleeve; 7- pipe cap; 8- guide hole; 9- puncture needle; 10- telescopic tube; 11- positioning piece; 12- hollow stud; 13- push cap; 14- extension; 15- bump; 16- limit ring. DETAILED DESCRIPTION

[0021] 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.

[0022] like Figure 1-4 As shown, a lung nodule puncture positioning device comprises: an auxiliary seat 1, an octagonal frame 2 is arranged at the center of the auxiliary seat 1, a center hole 3 is arranged at the center of the octagonal frame 2, a disc seat 4 is arranged on the auxiliary seat 1, a guide hole 8 is arranged at the center of the disc seat 4, the guide hole 8 corresponds to the center hole 3 up and down, a puncture needle 9 is slidably fitted in the guide hole 8, the puncture needle 9 is a hollow structure, a telescopic tube 10 is slidably fitted in the puncture needle 9, and a positioning piece 11 is arranged at one end of the puncture needle 9; One end of the puncture needle 9 away from the positioning member 11 is matched with a push cap 13 , and one end of the telescopic tube 10 is matched with the push cap 13 .

[0023] Among them, a positioning column 4 is arranged on the auxiliary seat 1, a sliding sleeve 6 is arranged at the bottom of the disc seat 4, and a pipe cap 7 is arranged at the top. The positioning column 4 is slidably matched in the sliding sleeve 6 and extends upward, and the extended end is threadedly matched with the pipe cap 7.

[0024] Furthermore, the central hole 3 of the auxiliary seat 1 is used to locate the marking point to achieve subsequent puncture.

[0025] The hollow inner diameter of the puncture needle 9 is 0.8-1.2 mm.

[0026] The positioning member 11 is made of a nickel-titanium alloy with a phase change temperature of 30-40° C., has an outer diameter of 2-3 mm in a natural state, and is received in the inner cavity of the puncture needle 9 after being compressed.

[0027] The positioning piece 11 forms an umbrella-shaped structure after being unfolded, and the end of the positioning piece 11 is embedded with a high-density metal material, and the CT value is ≥2000HU.

[0028] Furthermore, a nickel-titanium alloy with a phase transition temperature range of 30-40°C is selected, and its superelasticity and shape memory effect are utilized. When the temperature reaches the phase transition temperature, the positioning member 11 quickly recovers from the compressed state to the preset umbrella-shaped structure to form multi-point anchoring with the lung tissue, and the mark formed by the high-density metal material is conducive to clear development under CT images, thereby achieving accurate anchoring.

[0029] Among them, a hollow stud 12 is arranged at one end of the puncture needle 9, and the push cap 13 is threadably matched with the hollow stud 12.

[0030] An extension column 14 is disposed at one end of the telescopic tube 10 , a protrusion 15 is disposed at the end of the extension column 14 , a limiting ring 16 is disposed in the pushing cap 13 , and the extension column 14 passes through the limiting ring 16 and is fixedly matched with the protrusion 15 .

[0031] Furthermore, the pushing cap 13 moves spirally to push the positioning member 11 .

[0032] Preoperative preparation is performed before use. The patient takes a supine or prone position, and a CT scan is performed to determine the coordinates of the nodule. Then the center hole 3 of the auxiliary seat 1 is aligned with the positioning mark point. After local anesthesia, the puncture needle 9 is slowly inserted along the planned path. When the needle tip is 5 mm away from the edge of the nodule, the insertion is stopped and the positioning piece 11 is ready to be released. When releasing the positioning piece 11, a CT scan is required again to confirm the relative position to the nodule.

[0033] A method for locating a lung nodule comprises the following steps: S1, preoperative CT three-dimensional reconstruction to plan the puncture path; S2, the puncture needle is inserted along the path to the edge of the nodule; S3, pushing the positioning member to the target position and releasing it to form an anchoring structure; S4. After the positioning accuracy is confirmed by imaging, the diagnosis and treatment operation is completed.

[0034] This device is suitable for tiny or deep lung nodules with a diameter of ≤2cm. Through innovative mechanical structure and material design, it significantly improves the accuracy and stability of puncture positioning.

[0035] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, 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. In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be a direct connection, or it can be an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. 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 pulmonary nodule puncture positioning device, characterized in that: include: An auxiliary seat (1), wherein an octagonal frame (2) is provided at the center of the auxiliary seat (1), a center hole (3) is provided at the center of the octagonal frame (2), a disc seat (4) is provided on the auxiliary seat (1), a guide hole (8) is provided at the center of the disc seat (4), the guide hole (8) corresponds to the center hole (3) in a vertical direction, a puncture needle (9) is slidably fitted in the guide hole (8), the puncture needle (9) is a hollow structure, the telescopic tube (10) is slidably fitted in the puncture needle (9), and a positioning piece (11) is provided at one end of the puncture needle (9); The end of the puncture needle (9) away from the positioning member (11) is matched with a push cap (13), and one end of the telescopic tube (10) is matched with the push cap (13).

2. A pulmonary nodule puncture positioning device according to claim 1, characterized in that: The auxiliary seat (1) is provided with a positioning column (4), the bottom of the disc seat (4) is provided with a sliding sleeve (6), and the top is provided with a pipe cap (7), the positioning column (4) is slidably fitted in the sliding sleeve (6) and extends upward, and the extended end is threadably fitted with the pipe cap (7).

3. A pulmonary nodule puncture positioning device according to claim 1, characterized in that: The hollow inner diameter of the puncture needle (9) is 0.8-1.2 mm.

4. A pulmonary nodule puncture positioning device according to claim 1, characterized in that: The positioning piece (11) is made of a nickel-titanium alloy with a phase change temperature of 30-40° C., has an outer diameter of 2-3 mm in a natural state, and is received in the inner cavity of the puncture needle (9) after being compressed.

5. A pulmonary nodule puncture positioning device according to claim 4, characterized in that: The positioning piece (11) forms an umbrella-shaped structure after being unfolded, and the end of the positioning piece (11) is embedded with a high-density metal material with a CT value of ≥2000HU.

6. A pulmonary nodule puncture positioning device according to claim 1, characterized in that: A hollow stud (12) is provided at one end of the puncture needle (9), and the push cap (13) is threadably matched with the hollow stud (12).

7. A pulmonary nodule puncture positioning device according to claim 1, characterized in that: An extension column (14) is provided at one end of the telescopic tube (10), a protrusion (15) is provided at the end of the extension column (14), a limiting ring (16) is provided inside the pushing cap (13), and the extension column (14) passes through the limiting ring (16) and is fixedly engaged with the protrusion (15).

8. A method for locating a lung nodule, using the device according to any one of claims 1 to 7, comprising the following steps: S1, preoperative CT three-dimensional reconstruction to plan the puncture path; S2, the puncture needle is inserted along the path to the edge of the nodule; S3, pushing the positioning member to the target position and releasing it to form an anchoring structure; S4. After the positioning accuracy is confirmed by imaging, the diagnosis and treatment operation is completed.

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