Pulmonary nodule positioning assembly and pulmonary nodule puncture positioning system

Abstract

The utility model discloses a pulmonary nodule positioning assembly and a pulmonary nodule puncture positioning system.The pulmonary nodule positioning assembly comprises a positioning part and a conveying part which is connected with the positioning part and is in a stretching state, and the positioning part is connected with the conveying part through a connecting piece; the positioning part is provided with a first spiral section, a third spiral section and a second spiral section arranged between the first spiral section and the third spiral section, and the maximum outer diameter of the second spiral section is smaller than the maximum outer diameter of the first spiral section and the maximum outer diameter of the third spiral section. The pulmonary nodule puncture positioning system comprises a puncture needle assembly and the pulmonary nodule positioning assembly arranged in the puncture needle assembly. According to the pulmonary nodule puncture positioning system, a more stable and safer positioning effect can be provided, meanwhile, the discomfort and complications of a patient in the operation process are reduced, and the operation efficiency and the satisfaction degree of the patient are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and more specifically, to a pulmonary nodule positioning component. In addition, the utility model also relates to a pulmonary nodule puncture positioning system comprising the pulmonary nodule positioning component. Background Art

[0002] Lung nodules refer to round or oval lesions in the lungs, which are usually no larger than 3 cm in diameter. Early detection and diagnosis of lung nodules are crucial to improving the treatment of lung cancer. The first step in lung nodule removal surgery is positioning. Preoperatively, lung nodules are mainly positioned through chest CT and other examinations to determine the location of lung nodules, the scope of surgical resection, and other information.

[0003] The pulmonary nodule puncture positioning needle is a medical device used to accurately locate pulmonary nodules before surgery or biopsy, and plays a key role in improving the accuracy and safety of surgery. At present, the commonly used pulmonary nodule positioning needles on the market are fishhook-shaped pulmonary nodule positioning needles, such as double-hook positioning or four-hook positioning. This type of product is prone to cause pneumothorax, lung tissue bleeding, etc. It is manifested in clinical feedback that when it pops out of the puncture needle tube, the outward elastic force is relatively large, which can easily cause peripheral blood vessels to rupture and bleed. The thicker positioning line is placed on the pleura and lung surface. After positioning, there is traction and friction with breathing, which is painful. If the pulmonary nodule is grabbed or pierced, it may cause the implantation and spread of iatrogenic tumor cells. Another commonly used type of pulmonary nodule positioning needle on the market is the tower-shaped spring coil type. Compared with the fishhook type, the tower-shaped spring coil type pulmonary nodule positioning needle is easy to unhook. The tower-shaped spring coil type remains inside the pulmonary nodule, while the connecting line remains outside the body, which is easier to pull out.

[0004] In view of this, it is necessary to improve the pulmonary nodule positioning component and the pulmonary nodule puncture positioning system in the prior art to solve the above problems. Utility Model Content

[0005] The utility model aims to disclose a pulmonary nodule positioning component and a pulmonary nodule puncture positioning system, so as to improve the problems of existing products that are easy to cause bleeding of human tissue and easy to be unhooked.

[0006] To achieve the above-mentioned purpose, the utility model provides a lung nodule positioning assembly in a first aspect, comprising a positioning portion and a conveying portion connected to the positioning portion and in a stretched state, wherein the positioning portion and the conveying portion are connected via a connecting piece;

[0007] The positioning portion comprises a first spiral segment, a third spiral segment and a second spiral segment arranged between the first spiral segment and the third spiral segment, and the maximum outer diameter of the second spiral segment is smaller than the maximum outer diameters of the first spiral segment and the third spiral segment.

[0008] As a further improvement of the present invention, the maximum outer diameter of the third spiral segment is greater than or equal to the maximum outer diameter of the first spiral segment.

[0009] As a further improvement of the present invention, the connecting member is a pressing member that fixedly or detachably connects the positioning portion and the conveying portion.

[0010] As a further improvement of the present invention, the positioning portion is made of a shape memory alloy material, and the positioning portion is at least partially retained in the lung nodule tissue.

[0011] As a further improvement of the present invention, the length of the positioning portion does not exceed 15 mm.

[0012] The second aspect of the utility model provides a pulmonary nodule puncture positioning system, comprising a puncture needle assembly and the above-mentioned pulmonary nodule positioning assembly disposed in the puncture needle assembly;

[0013] The puncture needle assembly includes a puncture needle body and a puncture needle handle arranged at the proximal end of the puncture needle body;

[0014] The pulmonary nodule positioning component is disposed in the cavity of the puncture needle body, and the positioning portion is disposed in the direction close to the needle tip of the puncture needle body;

[0015] The puncture needle handle is provided with a channel penetrating the cavity.

[0016] As a further improvement of the utility model, a blocking piece is further provided on the puncture needle handle, and the blocking piece is used to block the channel.

[0017] As a further improvement of the present invention, the pulmonary nodule puncture positioning system further includes a pushing component, and the pushing component includes a pushing core and a pushing handle connected to the pushing core;

[0018] The pushing handle pushes the pushing core to pass through the puncture needle cavity to push the positioning portion out of the puncture needle cavity and into the interior of the pulmonary nodule.

[0019] As a further improvement of the present invention, a first sheath tube for protecting the puncture needle body is further provided outside the puncture needle body.

[0020] As a further improvement of the utility model, the pushing core is also provided with a second sheath tube for protecting the pushing core.

[0021] Compared with the prior art, the beneficial effects of the utility model are as follows: First, the lung nodule positioning component of the present application is suitable for accurately positioning lung nodules. Compared with double-hook and four-hook positioning needles, it can more effectively reduce the damage to lung tissue, reduce the risk of pulmonary hemorrhage and pneumothorax, and thus improve the comfort of patients. Secondly, it enhances the stability of positioning and reduces the risk of displacement of the lung nodule positioning component, reduces the deviation of positioning caused by breathing or body movement, and avoids the situation in which the delivery end is separated from the surface of the visceral pleura due to large movement amplitude or intense breathing when positioning deep lung nodules. Thirdly, the three-stage positioning design can be coiled in the lung tissue to form an irregular shape to provide good anchoring force.

[0022] Through the above-mentioned technical effects, the lung nodule localization needle can provide a more stable and safe positioning effect, while reducing patient discomfort and complications during the operation, thereby improving the efficiency of the operation and patient satisfaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of a lung nodule positioning component provided for this application;

[0024] Figure 2 A schematic diagram of the structure of a lung nodule puncture positioning system provided in this application;

[0025] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at the box;

[0026] Figure 4 A schematic structural diagram of a push component provided for this application;

[0027] Reference numerals: 1-positioning portion; 11-third spiral segment; 12-second spiral segment; 13-first spiral segment; 2-transporting portion; 3-connecting piece; 4-puncture needle body; 5-first sheath tube; 6-puncture needle handle; 7-blocking piece; 8-pushing core body; 9-pushing handle; 10-second sheath tube; DETAILED DESCRIPTION

[0028] The present invention is described in detail below in conjunction with the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in the field based on these embodiments are all within the scope of protection of the present invention.

[0029] For ease of explanation, the end closer to the operator (far away from the needle tip) is referred to as the proximal end or proximal end of the puncture needle, and the end closer to the needle tip is referred to as the distal end or distal end of the puncture needle.

[0030] Combination Figure 1As shown, the present application provides a lung nodule positioning component, which is suitable for accurately positioning lung nodules, including a positioning part 1 and a conveying part 2 connected to the positioning part 1 and in a stretched state, and the positioning part 1 and the conveying part 2 are connected by a connecting member 3.

[0031] The lung nodule positioning component of the present application can be used for the diagnosis of early lung cancer. For patients with early lung cancer, the lung nodule positioning component can help doctors accurately identify and locate lung nodules, making biopsy more accurate. It can also be used to guide the surgical resection of lung nodules. During the lung nodule resection surgery, the lung nodule positioning component can help surgeons accurately locate the position of the nodule, ensure the accuracy of the operation, and retain the surrounding healthy lung tissue to the greatest extent. In addition, it can also be used as an auxiliary means of interventional treatment. When performing radiofrequency ablation or other interventional treatments, the lung nodule positioning component can ensure that the treatment is accurately applied to the target nodule, thereby improving the treatment effect and reducing damage to surrounding normal tissues. Reduce surgical risks. Using the lung nodule positioning component for preoperative planning, doctors can better understand the exact location and size of the lung nodules, which helps them to develop a more detailed surgical plan, thereby improving the success rate of the operation.

[0032] Ginseng Figure 1 As shown, the positioning portion 1 has a first spiral segment 13, a third spiral segment 11, and a second spiral segment 12 disposed between the first spiral segment 13 and the third spiral segment 11, and the maximum outer diameter of the second spiral segment 12 is smaller than the maximum outer diameters of the first spiral segment 13 and the third spiral segment 11, that is, the maximum outer diameter of the first spiral segment 13 is greater than the maximum outer diameter of the second spiral segment 12; the maximum outer diameter of the third spiral segment 11 is greater than the maximum outer diameter of the second spiral segment 12. In a preferred embodiment, the maximum outer diameter of the third spiral segment 11 is greater than the maximum outer diameter of the first spiral segment 13. That is, the maximum outer diameter of the third spiral segment 11 is greater than the maximum outer diameter of the first spiral segment 13 and the maximum outer diameter of the second spiral segment 12. In a preferred embodiment, the maximum outer diameter of the third spiral segment 11 is equal to the maximum outer diameter of the first spiral segment 13.

[0033] Ginseng Figure 1 As shown, in a preferred embodiment, the third spiral segment 11 includes a curved segment and a straight segment, the curved segment presents the maximum outer diameter, and the straight segment is connected to the conveying portion 2 through the connecting member 3. The positioning portion adopts this three-segment design, and the three-segment design presents a double funnel shape. The double funnel shape design can make the positioning portion 1 more tightly combined with the pulmonary nodule lesion, and more firmly positioned at the pulmonary nodule lesion, which can solve the technical problem that the hook design is easy to be unhooked, reduce pulmonary hemorrhage, and improve the comfort of patients.

[0034] The outer diameter of the third spiral segment 11 can be 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, etc.

[0035] The outer diameter of the second spiral segment 12 can be 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, etc.

[0036] The outer diameter of the first spiral segment 13 may be 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, etc.

[0037] In a preferred embodiment, the maximum outer diameter of the third helical segment 11 is 5 mm, the maximum outer diameter of the second helical segment 12 is 3 mm, and the maximum outer diameter of the first helical segment 13 is 5 mm.

[0038] In another preferred embodiment, the maximum outer diameter of the third helical segment 11 is 5 mm, the maximum outer diameter of the second helical segment 12 is 3 mm, and the maximum outer diameter of the first helical segment 13 is 4 mm.

[0039] Illustratively, the positioning portion 1 is made of a shape memory alloy material, and the positioning portion 1 is at least partially retained in the pulmonary nodule tissue. Shape memory alloy materials are memory alloy materials that are already sold on the market, and the following can be cited: nickel-titanium alloy, copper-zinc alloy, copper-aluminum-nickel alloy, copper-aluminum-manganese alloy, titanium-molybdenum alloy, nickel-titanium-copper alloy, nickel-titanium-iron alloy, copper-manganese alloy, copper-iron alloy, titanium-nickel-vanadium alloy, copper-gold-zirconium alloy, copper-nickel-aluminum alloy, silver-cadmium alloy, titanium-palladium alloy, titanium-nickel-niobium alloy, zirconium-nickel alloy, titanium-nickel-silver alloy, etc. This application preferably uses nickel-titanium alloy. The positioning portion 1 can be wound with a single wire of a memory alloy material, or it can be wound with a spring.

[0040] In the present application, the length of the positioning portion 1 is not excessively limited, and its design size is preferably not more than 15 mm according to the size of the pulmonary nodule lesion.

[0041] In a preferred embodiment, the connector 3 is a press-fit sleeve, which is used to fixedly connect the positioning portion 1 and the conveying portion 2. In another preferred embodiment, the connector 3 is a press-fit sleeve, which is used to detachably connect or fixedly connect the third spiral segment 11 of the positioning portion 1 and the conveying portion 2. The material of the press-fit sleeve can be stainless steel or medical polymer material. The press-fit sleeve can firmly fix the conveying portion 2 to prevent the positioning portion 1 from being separated from the conveying portion 2.

[0042] The conveying part 2 is in a stretched state and connected to the positioning part 1 through the connecting piece 3. The material of the conveying part 2 can be selected from medical nylon material, nickel-titanium alloy, etc. In the present application, medical nylon material is more preferably used.

[0043] Ginseng Figure 2 and Figure 3 As shown, the second aspect of the utility model provides a pulmonary nodule puncture positioning system, comprising a puncture needle assembly and the above-mentioned pulmonary nodule positioning assembly disposed in the puncture needle assembly;

[0044] The puncture needle assembly includes a puncture needle body 4 and a puncture needle handle 6 disposed at the proximal end of the puncture needle body 4; the puncture needle body 4 is fixedly connected to the puncture needle handle 6, and the puncture operation of the puncture needle body 4 is controlled by the puncture needle handle 6.

[0045] The above-mentioned pulmonary nodule positioning component is arranged in the cavity of the puncture needle body 4, and the pulmonary nodule positioning component includes a positioning part 1 and a conveying part 2 connected to the positioning part 1 and in a stretched state. The positioning part 1 and the conveying part 2 are connected through a connecting piece 3.

[0046] The positioning part 1 is disposed in the direction of the needle tip of the puncture needle body 4, that is, in the distal direction of the puncture needle body 4; and the conveying part 2 is disposed in the proximal direction of the puncture needle body 4. A channel penetrating the inner cavity of the puncture needle body is disposed in the puncture needle handle 6. The channel is used to convey the pulmonary nodule positioning component, which is prepared as a finished product in advance and stored in the inner cavity of the puncture needle body 4 to be ready for use at any time.

[0047] Ginseng Figure 2 As shown, in a preferred embodiment, the puncture needle handle 6 is further provided with a blocking member 7, and the blocking member 7 is used to block the above-mentioned passage. The blocking member 7 and the passage can be blocked by: threaded connection, clamp connection, quick connector, conical connection and the like.

[0048] Ginseng Figure 4 As shown, in a preferred embodiment, the pulmonary nodule puncture positioning system further includes a pushing component, and the pushing component includes a pushing core 8 and a pushing handle 9 connected to the pushing core 8;

[0049] The pushing handle 9 is controlled to push the pushing core 8 through the internal cavity of the puncture needle body 4, so as to push the positioning part 1 out of the cavity of the puncture needle body 4 and into the interior of the pulmonary nodule.

[0050] There are no excessive restrictions on the material of the push core 8, preferably a hard material such as stainless steel. In addition, the maximum outer diameter of the push core 8 should be smaller than the inner cavity diameter of the puncture needle body 4, so that the push core 8 can move back and forth in the inner cavity of the puncture needle body 4.

[0051] Ginseng Figure 2 As shown, in a preferred embodiment, the outside of the puncture needle body 4 is further provided with a first sheath tube 5 for protecting the puncture needle body 4. The first sheath tube 5 is sleeved on the outside of the puncture needle body 4 to protect the puncture needle body 4 to prevent it from being bent due to external forces or to prevent the puncture needle body 4 from being contaminated by other objects.

[0052] Ginseng Figure 4 As shown, in a preferred embodiment, the push core 8 is further provided with a second sheath tube 10 for protecting the push core 8. The second sheath tube 10 is sleeved on the outside of the push core 8 to protect the push core 8 to prevent it from being bent due to external forces or to prevent the push core 8 from being contaminated by other objects.

[0053] There are no particular restrictions on the material of the first sheath tube 5 or the second sheath tube 10 , and they are preferably medical polymer materials, such as medical polyethylene.

[0054] The lung nodule positioning component in the present application adopts this three-stage design, which is double-funnel-shaped. The double-funnel-shaped design can make the positioning part 1 more tightly combined with the lung nodule lesion, and more firmly positioned at the lung nodule lesion, which can solve the technical problem that the hook-shaped design is easy to be unhooked, reduce pulmonary hemorrhage, and improve the comfort of patients. The series of detailed descriptions listed above are only specific descriptions of the feasible implementation methods of the utility model, and they are not used to limit the protection scope of the utility model. All equivalent implementation methods or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.

[0055] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A pulmonary nodule positioning component, characterized in that: The pulmonary nodule positioning assembly comprises a positioning portion and a conveying portion connected to the positioning portion and in a stretched state, wherein the positioning portion and the conveying portion are connected via a connecting piece; The positioning portion comprises a first spiral segment, a third spiral segment and a second spiral segment arranged between the first spiral segment and the third spiral segment, and the maximum outer diameter of the second spiral segment is smaller than the maximum outer diameters of the first spiral segment and the third spiral segment.

2. The pulmonary nodule positioning assembly according to claim 1, characterized in that: The maximum outer diameter of the third helical segment is greater than or equal to the maximum outer diameter of the first helical segment.

3. The pulmonary nodule positioning assembly according to claim 1, characterized in that: The connecting member is a pressing member that fixedly or detachably connects the positioning portion and the conveying portion.

4. The pulmonary nodule positioning assembly according to claim 1, characterized in that: The positioning portion is made of a shape memory alloy material, and at least a portion of the positioning portion is retained in the pulmonary nodule tissue.

5. The pulmonary nodule positioning assembly according to any one of claims 1 or 4, characterized in that: The length of the positioning portion does not exceed 15 mm.

6. A pulmonary nodule puncture positioning system, characterized in that: The pulmonary nodule puncture and positioning system comprises a puncture needle assembly and a pulmonary nodule positioning assembly as described in any one of claims 1 to 5 and arranged in the puncture needle assembly; The puncture needle assembly includes a puncture needle body and a puncture needle handle arranged at the proximal end of the puncture needle body; The pulmonary nodule positioning component is disposed in the cavity of the puncture needle body, and the positioning portion is disposed in the direction close to the needle tip of the puncture needle body; The puncture needle handle is provided with a channel penetrating the cavity.

7. The pulmonary nodule puncture positioning system according to claim 6, characterized in that: The puncture needle handle is also provided with a blocking piece, and the blocking piece is used to block the channel.

8. The pulmonary nodule puncture positioning system according to claim 6, characterized in that: The pulmonary nodule puncture positioning system further includes a pushing component, wherein the pushing component includes a pushing core and a pushing handle connected to the pushing core; The pushing handle pushes the pushing core body through the cavity of the puncture needle body to push the positioning part out of the puncture needle cavity and into the interior of the pulmonary nodule.

9. The pulmonary nodule puncture positioning system according to claim 6, characterized in that: The outside of the puncture needle body is also provided with a first sheath tube for protecting the puncture needle body.

10. The pulmonary nodule puncture positioning system according to claim 8, characterized in that: The pushing core is also provided with a second sheath tube for protecting the pushing core.

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