Pulmonary nodule localization needle

Abstract

The application discloses a lung nodule positioning puncture needle, which comprises a handle, a puncture needle tube arranged on the handle, a pushing component, and a pushing tube arranged on the pushing component, wherein the pushing tube passes through the handle and is arranged in the puncture needle tube, and the lung nodule positioning puncture needle further comprises a limiting structure which is configured to limit the pushing tube from being unexpectedly withdrawn. The lung nodule positioning puncture needle is prevented from being pulled backward by an operator by mistake, so that the probability that the positioning puncture needle cannot be normally used is reduced, and the safety of an operation is improved.

Description

Technical Field

[0001] This invention relates to the technical field of medical devices, and more particularly to a pulmonary nodule localization puncture needle. Background Technology

[0002] Early-stage lung cancer, precancerous lesions, or suspected early-stage lung cancer nodules are often small in size and located deep within the lung tissue, making them difficult to locate during thoracoscopic surgery. CT-guided localization needles are currently the mainstream method for locating lung nodules, relying primarily on a hook at the tip of the needle to grip adjacent lung tissue for positioning. In existing techniques, a push tube within the localization needle is typically used to extend the hook and release it within the patient's body to establish localization.

[0003] Based on extensive research and practical experience, it has been found that when surgeons use some domestic and international products, there is a certain probability that the localization puncture needle will malfunction or even become unusable. This phenomenon is often overlooked or simply attributed to a probabilistic product quality defect. In other words, those skilled in the art do not recognize the underlying technical issues but simply categorize it as a product defect. Summary of the Invention

[0004] In view of this, the present invention addresses a technical problem that has not yet been discovered by those skilled in the art based on the aforementioned deficiencies; and provides a lung nodule localization puncture needle designed to solve this technical problem. Regarding the above phenomenon, since those skilled in the art have not recognized the essential technical problem causing this phenomenon, even with the greatest possible improvement in quality control requirements and processing precision, it is difficult to avoid the occurrence of the above phenomenon.

[0005] Therefore, the technical problem identified is considered an innovation of this application as a substantial contribution. Specifically, the hook of the existing lung nodule localization puncture needle is a compression anchor hook, which is initially set inside the puncture needle tube. When the puncture needle tube reaches the designated position, the anchor hook is pushed out and released from the puncture needle tube under the action of the push tube. The reason for the probabilistic failure to use the needle normally is that, since the rear end of the anchor hook is connected to a flexible traction line, the operator may unintentionally or accidentally pull the push tube backward, causing the push tube to retract. This action exposes the flexible traction line in the internal space of the puncture needle tube outside the push tube, causing the flexible traction line to bend and become blocked in the space, resulting in the push tube being jammed and the anchor hook failing to be fired and released normally. Therefore, the technical problem of the above-mentioned defect can be summarized as the flexible traction line being blocked due to the operator's unintentional / accidental pulling action, which prevents the anchor hook from being released normally, and thus the localization puncture needle cannot work normally.

[0006] Furthermore, in response to the aforementioned defects and technical problems, a lung nodule localization puncture needle is proposed, which has a mechanism to prevent the push tube of the lung nodule localization puncture needle from unexpectedly retracting, so that the localization puncture needle can still work normally even when the operator performs an unconscious / misoperational pull.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] The present invention provides a lung nodule localization puncture needle, including a handle, a puncture needle tube disposed on the handle, a pushing component, and a pushing tube disposed on the pushing component. The pushing tube passes through the handle and is placed inside the puncture needle tube. The lung nodule localization puncture needle also includes a limiting structure configured to prevent the pushing tube from being retracted unintended.

[0009] The aforementioned lung nodule localization puncture needle includes a handle, a puncture needle tube, a pushing component, a pushing tube, a flexible traction line, and an anchor hook; the pushing tube passes through the handle and is placed inside the puncture needle tube; the anchor hook is disposed inside the puncture needle tube; the flexible traction line is directly / indirectly connected to the anchor hook; and it also includes a limiting structure configured to restrict the unintended retraction of the pushing tube.

[0010] Furthermore, some components of the limiting structure are synchronized with the push tube.

[0011] As a preferred embodiment, the limiting structure includes a sliding stop and a stop, which are respectively disposed on the push tube and the puncture needle tube.

[0012] Furthermore, the sliding stop is an integral part of the push tube or the sliding stop is fixedly connected to the push tube;

[0013] And / or, the stop is part of the entire puncture needle tube or the stop is fixedly connected to the puncture needle tube.

[0014] Furthermore, both the sliding stop and the stop are tubular structures, and the outer diameter of the sliding stop is larger than the inner diameter of the stop.

[0015] As another preferred option, some components of the limiting structure are configured to deform as the push tube moves forward;

[0016] Furthermore, the limiting mechanism includes a foldable tube, the wall of which is made of a non-elastic flexible material, the rear side of which is fixedly connected to the pushing component, and the front side of which is fixedly connected to the handle.

[0017] As a further preferred embodiment, the limiting mechanism includes a corrugated tube, the rear side of which is fixedly connected to the pushing component, and the front side of which is fixedly connected to the handle.

[0018] As a preferred alternative, the limiting mechanism includes a sliding block and a sliding groove. The sliding block is fixedly connected to or integrally formed with the pushing component, and the sliding groove is formed on the handle. A slider is provided on the sliding block, and the slider slides in the sliding groove. A limiting block is provided on the rear side of the sliding groove, and the limiting block is used to cooperate with the slider of the sliding block to limit the sliding movement.

[0019] As another preferred technical solution, the limiting mechanism includes a sliding block and a sliding groove. The sliding block is fixedly connected to or integrally formed with the pushing component, and the sliding groove is formed on the handle. The sliding block wall is provided with a rack with at least one tooth, and the sliding groove is provided with a one-way toothed groove that cooperates with the rack. The one-way toothed groove is provided with a toothed groove that allows the rack on the sliding block to push forward and prevents the sliding block from moving backward.

[0020] The present invention, by employing the above-mentioned technology, has the following positive effects compared with the prior art:

[0021] This invention has discovered a technical problem that is not yet known or difficult to discover by those skilled in the art. The reason why existing lung nodule localization puncture needles may fail to function properly is that, because the rear end of the anchor hook is connected to a flexible traction line, the operator may unintentionally or accidentally pull the tube backward, causing the push tube to retract. This action exposes the flexible traction line inside the puncture needle tube outside the push tube, causing the flexible traction line to bend and become blocked in the space, resulting in the push tube being jammed and the anchor hook unable to be fired and released normally. In other words, the operator's unintentional / accidental pulling action may cause the flexible traction line to become blocked, preventing the anchor hook from being released normally, and thus the localization puncture needle may not function properly. The positive effects of discovering this technical problem are as follows: First, the public dissemination of this patent has raised surgeons' awareness of proper operation, minimizing and avoiding misoperations, and improving surgical safety and economy. Second, when quality control and processing precision already meet the corresponding requirements, there is no need to further increase quality control requirements and processing precision, effectively avoiding waste of resources. Third, the discovery of this technical problem has provided technical inspiration for solving it, promoting further development in the field of lung nodule localization puncture needles.

[0022] The limiting structure of the present invention is configured to restrict the unintended retraction of the push tube, so that the positioning puncture needle can still work normally even when the surgeon pulls it back unintentionally or by mistake, thus improving the safety and stability of the lung nodule positioning puncture needle.

[0023] The lung nodule localization puncture needle of the present invention has a simple overall structure, is easy to operate, and is safe and reliable. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the lung nodule localization puncture needle of the present invention.

[0025] Figure 2 This is an exploded view of the overall structure of the lung nodule localization puncture needle of the present invention.

[0026] Figure 3 This is a schematic diagram of the normal structure of the anchor hook of the pulmonary nodule localization puncture needle.

[0027] Figure 4 This is a schematic diagram of the abnormal state of the anchor hook of the pulmonary nodule localization puncture needle.

[0028] Figure 5 This is a schematic cross-sectional view of the lung nodule localization puncture needle of the present invention.

[0029] Figure 6 This invention relates to the lung nodule localization puncture needle. Figure 5 A magnified view of a portion of the image.

[0030] Figure 7 This is a schematic diagram of the first embodiment of the lung nodule localization puncture needle of the present invention.

[0031] Figure 8 This is a schematic diagram of a second embodiment of the lung nodule localization puncture needle of the present invention.

[0032] Figure 9 This is a schematic diagram of the third embodiment of the lung nodule localization puncture needle of the present invention.

[0033] In the attached diagram: 1. Handle; 2. Puncture needle tube; 3. Pushing component; 4. Pushing tube; 5. Corrugated tube; 5-1. Sliding stop; 5-2. Stop; 5-3. Sliding block; 5-4. Slide groove; 5-5. Tooth; 5-6. One-way toothed groove; 6. Flexible traction line; 7. Fixing tube; 8. Anchor hook; 9. Buckle cover. Detailed Implementation

[0034] The technical contributions and solutions of the present invention will now be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0035] In the description of this invention, it should be understood that, in order to clearly and intuitively present the technical solution of this application, some components are omitted in the drawings, which are only for illustration and do not constitute a specific limitation of this application.

[0036] In this application, "front side" generally refers to the side closer to the anchor hook 8, and "rear side" generally refers to the side closer to the pushing component 3.

[0037] In this application, the formulation of the technical problem is considered an innovative point, representing a substantial contribution. See also... Figures 1 to 6 The diagram illustrates the lung nodule localization puncture needle of the present invention, which mainly includes: a handle 1, a puncture needle tube 2, a pushing component 3, a pushing tube 4, a flexible traction line 6, a fixing tube 7, an anchor hook 8, and a snap-on cap 9. The anchor hook 8 is disposed within the internal space of the puncture needle tube 2 and enters the human tissue together with the puncture needle tube 2. A flexible traction line 6 is attached to the rear side of the anchor hook 8 and is disposed within the pushing tube 4; this flexible traction line is used for traction and positioning. The diagram also includes a fixing tube 7, which is fixedly connected to the anchor hook 8. During normal operation, when the operator applies force to the pushing component 3, causing the pushing component 3 and the pushing tube 4 to move forward in tandem, the pushing tube 4 moves forward along the axial direction of the puncture needle tube 2 and abuts against the fixing tube 7 or the anchor hook 8. This pushes the fixing tube 7 and the anchor hook 8 forward together until the fixing tube 7 and the anchor hook 8 are pushed out of the puncture needle tube 2, and the anchor hook 8 is released within the patient's body to form a positioning point. See also... Figures 3 to 4 The reason why the lung nodule localization puncture needle may not work properly is that, since the rear end of the anchor hook 8 is connected to a flexible traction line 6, the operator may unconsciously or accidentally pull the push tube 4 backward. This action exposes the flexible traction line 6 in the internal space of the puncture needle tube 2 outside the push tube 4. As a result, the flexible traction line 6 bends and gets blocked in the space, causing the push tube 4 to be stuck and unable to function properly. Consequently, it is impossible to properly push out and release the fixation tube 7 and the anchor hook 8.

[0038] Furthermore, based on this, the following specific embodiments are proposed to ensure that the positioning puncture needle can still function normally even when the operator performs an unconscious / misoperational pulling motion.

[0039] See Figures 1 to 6The diagram illustrates a lung nodule localization puncture needle of the present invention, comprising a handle 1, a puncture needle tube 2, a pushing component 3, a pushing tube 4, a flexible traction line 6, and an anchor hook 8. The pushing component 3 is connected to the pushing tube 4, and the pushing tube 4 passes through the handle 1 and is placed inside the puncture needle tube 2. The flexible traction line 6 is placed inside the pushing tube 4, and the flexible traction line 6 is directly / indirectly connected to the anchor hook 8. The anchor hook 8 is a compressible anchor hook, which is compressed and disposed inside the puncture needle tube 2. The anchor hook 8... A fixing tube 7 is also provided, which is fixedly connected to the anchor hook 8; the push action of the surgeon on the push component 3 will cause the push tube 4 to move along its axial direction, and then the push tube 4 will abut against the fixing tube 7 or the anchor hook 8, driving the anchor hook 8 to be released from the puncture needle tube 2, released in the patient's body and forming a position; it also includes a limiting structure, which includes a sliding stop 5-1 and a stop part 5-2; the limiting structure is configured to restrict the push tube 4 from unintended retraction.

[0040] Preferably, the sliding stop 5-1 and the stop part 5-2 are respectively provided on the push tube 4 and the puncture needle tube 2;

[0041] Preferably, the sliding stop 5-1 is disposed on the front side of the push tube 4, and the sliding stop 5-1 is part of the entire push tube 4 or the sliding stop 5-1 is fixedly connected to the push tube 4;

[0042] Preferably, the stop part 5-2 is disposed on the front side of the inner wall of the puncture needle tube 2, and the stop part 5-2 is part of the entire puncture needle tube 2 or the stop part 5-2 is fixedly connected to the puncture needle tube 2;

[0043] Preferably, the outer diameter of the sliding stop 5-1 is larger than the inner diameter of the stop 5-2, so that when the push tube 4 is pulled backward, the stop 5-2 limits the sliding stop 5-1 on the push tube 4, preventing the push tube 4 from retracting and thus avoiding the flexible traction wire 6 inside the push tube 4 from being exposed and jammed in the internal space of the puncture needle tube 2 outside the push tube 4, thereby ensuring that the anchor hook 8 can be fired normally for release.

[0044] Preferably, the sliding stop 5-1 and the stop portion 5-2 can have various modified structures. For example, the sliding stop 5-1 can be an annular protrusion that moves synchronously on the push tube 4, and the stop portion 5-2 can be a stop component that restricts the annular protrusion from moving backward; or, the sliding stop 5-1 can be a slider that moves synchronously on the push tube 4, and the stop portion 5-2 can be a groove with varying depth that restricts the slider from sliding backward; and so on. Various modified structures located on the push tube 4 and the puncture needle tube 2, which are used to prevent the push tube 4 from being retracted as expected, are all considered as equivalent technical features of the corresponding technical means in this embodiment.

[0045] See Figure 7 As shown, it is similar in structure to the lung nodule localization puncture needle of the present invention shown in the aforementioned embodiment, including a handle 1, a puncture needle tube 2, a pushing component 3, a pushing tube 4, a flexible traction line 6, and an anchor hook 8; the pushing component 3 is connected to the pushing tube 4, and the pushing tube 4 passes through the handle 1 and is placed inside the puncture needle tube 2; the flexible traction line 6 is placed inside the pushing tube 4, and the flexible traction line 6 is directly / indirectly connected to the anchor hook 8; the anchor hook 8 is a compressible anchor hook, which is compressed and disposed inside the puncture needle tube 2; a fixing tube 7 is also provided on the anchor hook 8, and the fixing tube 7 is connected to the anchor hook 8. The hook 8 is fixedly connected; the push action of the operator on the push component 3 will cause the push tube 4 to move along its axial direction, and then the push tube 4 will abut against the fixed tube 7 or the anchor hook 8, driving the anchor hook 8 to be released from the puncture needle tube 2, released in the patient's body and forming a position; it also includes a limiting structure, the limiting mechanism including a sliding block 5-3 and a sliding groove 5-4; the sliding block 5-3 is fixedly connected to the push component 3 or the sliding block 5-3 is integrally formed with the push component 3; the sliding groove is opened on the handle 1, and the limiting structure is configured to restrict the push tube 4 from unintended retraction.

[0046] Preferably, the sliding block 5-3 is provided with a locking chamber, and the pushing component 3 is disposed in the locking chamber, which drives the sliding block 5-3 to move synchronously; furthermore, the locking chamber is disposed on the rear side of the sliding block 5-3.

[0047] Preferably, a slider is provided on the sliding block 5-3, and the slider slides within the sliding groove 5-4; a limiting block is provided on the rear side of the sliding groove 5-4 for sliding and limiting in cooperation with the slider of the sliding block 5-3. Specifically, when using the lung nodule positioning puncture needle, after the buckle cover 9 is removed from the handle 1, the pushing component 3 is exposed. Under normal conditions, the operator applies the pushing component 3, thereby releasing the anchor hook 8 from the puncture needle tube 2; however, when the operator performs an unconscious / misoperational pulling action, due to the limiting effect of the sliding groove 5-4 on the sliding block 5-3, the pushing component 3 cannot move backward, and thus the pushing tube 4 connected to the pushing component 3 will not move backward, thereby preventing the flexible traction wire 6 inside the pushing tube 4 from being exposed and jammed in the internal space of the puncture needle tube 2 outside the pushing tube 4, thus ensuring that the anchor hook 8 can be fired normally for release.

[0048] See Figure 8As a variation of the above embodiment, the sliding block 5-3 has a rack with at least one tooth 5-5 on its wall surface, and the sliding groove 5-4 has a one-way toothed groove 5-6 that cooperates with the rack. The one-way toothed groove 5-6 has a toothed groove that allows the rack on the sliding block 5-3 to push forward and prevents the sliding block 5-3 from moving backward. Similar to the working principle of the above embodiment, the limiting structure is configured to restrict the push tube 4 from retracting unexpectedly.

[0049] Please see Figure 9 As shown, it is similar in structure to the lung nodule localization puncture needle of the present invention shown in the aforementioned embodiments, including a handle 1, a puncture needle tube 2, a pushing component 3, a pushing tube 4, a flexible traction line 6, and an anchor hook 8; the pushing component 3 is connected to the pushing tube 4, and the pushing tube 4 passes through the handle 1 and is placed inside the puncture needle tube 2; the flexible traction line 6 is placed inside the pushing tube 4, and the flexible traction line 6 is directly / indirectly connected to the anchor hook 8; the anchor hook 8 is a compressible anchor hook, which is compressed and disposed inside the puncture needle tube 2; the anchor hook 8 is a compressible anchor hook. The hook 8 is also equipped with a fixing tube 7, which is fixedly connected to the anchor hook 8. When the surgeon applies a pushing action to the pushing component 3, the pushing tube 4 will be displaced along its axial direction, and then the pushing tube 4 will abut against the fixing tube 7 or the anchor hook 8, causing the anchor hook 8 to be released from the puncture needle tube 2, released into the patient's body and positioned. The system also includes a limiting mechanism, which includes a foldable tube. The two sides of the foldable tube are fixedly connected to the pushing component 3 and the handle 1, respectively. The wall of the foldable tube is made of a non-elastic flexible material. When the surgeon unconsciously / misoperates and pulls backward, the wall of the foldable tube is in a taut state, thus limiting the unintended retraction of the pushing tube 4. Under normal conditions, when the surgeon applies pressure to the pushing component 3, the foldable tube folds, thereby releasing the anchor hook 8 from the puncture needle tube 2.

[0050] In one variation of the above embodiment, the foldable tube is replaced with a corrugated tube 5. The corrugated tube 5 does not deform or deforms only slightly when the surgeon unconsciously or accidentally pulls backward, thus limiting the unintended retraction of the push tube 4. However, under normal conditions, when the surgeon applies pressure to the push component 3, the corrugated tube 5 compresses, causing the anchor hook 8 to be released from the puncture needle tube 2. Furthermore, the corrugated tube 5 can be a tensile corrugated tube.

[0051] Furthermore, it should be noted that the features in the above embodiments can be combined with each other without contradiction to form more embodiments.

[0052] The above description is merely a preferred embodiment of the present invention and does not limit the implementation and protection scope of the present invention. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A lung nodule localization puncture needle, comprising a handle (1), a puncture needle tube (2), a pusher (3), a pusher tube (4), a flexible traction wire (6), and an anchor hook (8). The push tube (4) passes through the handle (1) and is placed inside the puncture needle tube (2); The anchor hook (8) is disposed inside the puncture needle tube (2); The flexible traction line (6) is directly / indirectly connected to the anchor hook (8); Its features are, It also includes a limiting structure configured to prevent the push tube (4) from retracting unintended. Some components of the limiting structure deform as the push tube (4) moves forward. The limiting mechanism includes a foldable tube or a corrugated tube (5). The rear side of the foldable tube is fixedly connected to the push component (3), and the front side of the foldable tube is fixedly connected to the handle (1). The rear side of the corrugated tube (5) is fixedly connected to the push component (3), and the front side of the corrugated tube (5) is fixedly connected to the handle (1).

2. The lung nodule localization puncture needle according to claim 1, characterized in that, Some components of the limiting structure are synchronously linked with the push tube (4).

3. The lung nodule localization puncture needle according to claim 1, characterized in that, The limiting structure includes a sliding stop (5-1) and a stop (5-2), which are respectively disposed on the push tube (4) and the puncture needle tube (2).

4. The lung nodule localization puncture needle according to claim 3, characterized in that, The sliding stop (5-1) is part of the push tube (4) or the sliding stop (5-1) is fixedly connected to the push tube (4); and / or, the stop (5-2) is part of the puncture needle tube (2) or the stop (5-2) is fixedly connected to the puncture needle tube (2).

5. The lung nodule localization puncture needle according to claim 3, characterized in that, Both the sliding stop (5-1) and the stop (5-2) are tubular structures, and the outer diameter of the sliding stop (5-1) is larger than the inner diameter of the stop (5-2).

6. The lung nodule localization puncture needle according to claim 1, characterized in that, The wall of the foldable tube is made of a non-elastic flexible material.

7. The lung nodule localization puncture needle according to claim 1 or 2, characterized in that, The limiting mechanism includes a sliding block (5-3) and a sliding groove (5-4). The sliding block (5-3) is fixedly connected to or integrally formed with the pushing component (3). The sliding groove (5-4) is opened on the handle (1). A slider is provided on the sliding block (5-3), and the slider slides in the sliding groove (5-4). A limiting block is provided on the rear side of the sliding groove (5-4), and the limiting block is used to cooperate with the slider of the sliding block (5-3) to perform sliding limiting.

8. The lung nodule localization puncture needle according to claim 1 or 2, characterized in that, The limiting mechanism includes a sliding block (5-3) and a sliding groove (5-4). The sliding block (5-3) is fixedly connected to or integrally formed with the pushing component (3). The sliding groove (5-4) is opened on the handle (1). The wall surface of the sliding block (5-3) is provided with a rack with at least one tooth (5-5). The sliding groove (5-4) is provided with a one-way toothed groove (5-6) that cooperates with the rack. The one-way toothed groove (5-6) is provided with a toothed groove that allows the rack on the sliding block (5-3) to push forward and prevents the sliding block (5-3) from moving backward.

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