Positioning line recovery device

Abstract

The utility model provides a positioning line recovery device. The positioning line recovery device comprises a moving part, a recovery main body and an actuating part, the moving part is arranged at the end part of the recovery main body and can move between muscular tissues to approach the anchor hook of the positioning line; the recycling main body comprises a recycling channel, the recycling channel is used for containing a positioning line, and the positioning line can slide relative to the recycling channel; the actuating part is connected with the positioning line and is used for tensioning the positioning line, and when the recycling main body advances, the recycling channel slides along the tensioned positioning line, so that the moving part abuts against the anchor hook; after the moving part abuts against the anchor hook, the actuating part pulls the positioning line to recycle the anchor hook into the recycling channel. According to the utility model, the recovery device with the moving part and the actuating part is arranged, so that the positioning line anchored in the human tissue can be recovered, the recovery difficulty caused by the fact that the positioning line cannot be subjected to wedge-shaped resection after being positioned on a focus is solved, and the technical blank aiming at the problem is filled up.

Description

Technical Field

[0001] The present application relates to the field of medical devices, and in particular to a positioning wire recovery device. Background Art

[0002] Currently, CT-guided puncture positioning is mainly used before clinical surgery. Puncture positioning involves puncturing a positioning line with an anchoring component around the lesion. The positioning line can extend beyond the skin. During thoracoscopic surgery, wedge-shaped resection of lung tissue is performed based on the anchoring component. Current products do not have the function of retrieving the anchor hook after the anchoring component is pushed out and released.

[0003] After the positioning line is anchored in the lung and before wedge resection is prepared, the patient may encounter sudden problems, such as sudden cerebral hemorrhage, cerebral infarction, coagulation, or mental state that is not suitable for surgery or does not meet the surgical conditions. The patient may also be in trouble because the anchoring component of the positioning line is not anchored in place or the anchoring position deviates greatly from the lesion. Since the anchor hook has been anchored but surgical resection cannot be performed, it is also difficult to remove the anchored positioning device. If the positioning line left outside the body is forcibly pulled to pull out the anchor hook, the anchoring structure of the anchor hook makes it difficult to withdraw it within the tissue. In severe cases, it will damage normal tissue, causing the risk of pneumothorax and hemothorax, and endangering the patient's health. There are also health risks if the positioning device is left in the body for a long time.

[0004] Based on this, the present utility model is proposed. Patent CN219126608U proposes a puncture positioning needle for small lung nodules, and its locator is directly integrated on the puncture needle. When in use, the locator will push out the needle sleeve, expand and squeeze against the lung tissue, thereby locating the small lung nodule. Even if surgery is not possible, it can be pulled out of the body by pulling the pull wire. This patent achieves recycling by proposing a pull wire with a specific shape and that can be deformed. The technical solution proposed in the present utility model is universal for the anchor hook structure of the pull wire of the existing lung nodule positioning needle on the market, and can achieve recycling for the positioning wire with an anchor hook structure. Utility Model Content

[0005] The utility model provides a positioning wire recovery device, which can recover the positioning wire that has been anchored in human tissue by arranging a moving part and an actuating part, thereby solving the recovery difficulty caused by the inability to perform wedge resection after the positioning wire is positioned on the lesion, and filling the technical gap for this problem.

[0006] The utility model provides a kind of positioning line recovery device, including moving part, recovery main part, actuating part;The moving part is located in the end of the recovery main part, and can be moved between muscle tissue to approach the anchor hook of the positioning line;The recovery main part includes recovery channel, and the recovery channel is used to accommodate the positioning line, and the positioning line can be relatively slid relative to the recovery channel;The actuating part is connected with the positioning line, for tensioning the positioning line, when the recovery main part advances, the recovery channel slides along the positioning line of tensioning, to make the moving part abut the anchor hook;When the moving part abuts the anchor hook, actuating part pulls the positioning line to recover the anchor hook into the recovery channel.

[0007] Optionally, the moving part is a pointed end.

[0008] Optionally, the positioning line recovery device further comprises an opening, which is provided on the recovery main part and is arranged close to the moving part; the opening is in communication with the moving part and the recovery channel; the recovery channel is a groove provided on the outer wall of the recovery main part.

[0009] Optionally, a spring tube is arranged in the recovery main part, and the spring tube is coaxially connected with the recovery main part.

[0010] Optionally, the pointed end is provided with a reinforcing coating.

[0011] Optionally, the recovery channel has a fixed diameter, which is greater than the diameter of the positioning line, smaller than the diameter of the anchor hook in an expanded state, and greater than the diameter of the anchor hook in a contracted state.

[0012] Optionally, the recovery main part can be bent when moving with the moving part, and is not easy to deform when being extruded in the radial direction.

[0013] Optionally, the device further comprises a nickel-titanium guide wire, the nickel-titanium guide wire is crossed and fixed with the positioning line, and the actuating part pulls the positioning line by pulling the nickel-titanium guide wire.

[0014] Compared with the prior art, the utility model has at least the following beneficial effects:

[0015] The positioning line recovery device provided by the utility model has a moving part and an actuating part, and the device can be guided to the anchor hook of the positioning line and abutted by using the characteristic that the moving part can move between muscle tissues, and then the anchor hook is recovered by pulling the positioning line. In the process of recovering the positioning line, the anchor hook is the most difficult part, because the anchor hook itself is arranged as a structure that is not easy to slip out of the tissue and lock the lesion, so it is difficult to displace. The structure of the utility model can recover the anchor hook along the release path, which causes little harm to the human body and saves labor.

[0016] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory and are not restrictive of the application. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and serve to explain the principles of the application, in which, like reference numerals designate corresponding parts throughout the several views.

[0018] Figure 1 Fig. 1 shows a schematic diagram of a lung nodule localization needle puncture process.

[0019] Figure 2 Fig. 2 shows a schematic diagram of a localization line in human body displacement.

[0020] Figure 3 Fig. 3 shows a schematic diagram of a three-dimensional structure of a localization line recovery device according to an embodiment of the application.

[0021] Figure 4 Fig. 4 shows a schematic diagram of a three-dimensional structure of a localization line recovery device according to another embodiment of the application.

[0022] Figure 5 Fig. 5 shows a schematic diagram of a three-dimensional structure of a localization line recovery device according to another embodiment of the application. Figure 3 Fig. 5 shows a schematic diagram of a three-dimensional structure of a localization line recovery device according to another embodiment of the application.

[0023] Reference signs: moving part 11, recovery main body 12, actuating part, localization line 13, anchor hook 131, recovery channel 14, opening 15, groove 141, lesion 21, skin 22, lung 23, localization needle 24, displacement change 25. DETAILED DESCRIPTION

[0024] The exemplary embodiments will be described in detail herein below with reference to the drawings. When the following description refers to the drawings, identical numbers on different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the application. Instead, they are merely examples of apparatuses and methods consistent with some aspects of the application as detailed in the appended claims.

[0025] The terms used in this utility model are for the purpose of describing specific embodiments only and are not intended to limit the utility model. Unless otherwise defined, the technical terms or scientific terms used in this utility model should have the usual meaning understood by people with ordinary skills in the field to which this utility model belongs. The words "include" or "comprise" and the like used in this utility model specification and claims mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect.

[0026] The terms used in this utility model are for the purpose of describing specific embodiments only and are not intended to limit the utility model. As used in this utility model and the appended claims, the singular forms "a," "the," and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0027] Description of technical problem: Figure 1 As shown, puncture positioning is to puncture the positioning needle 24 with an anchoring component around the lesion 21. After the positioning needle 24 penetrates the skin 22 and the chest wall, the positioning line 13 can be released and anchored at the lesion 21 in the lung 23. After the positioning needle 24 is withdrawn, the end of the positioning line 13 can extend outside the skin 22 on the surface of the body. If a resection operation is to be performed, the patient may no longer be suitable for wedge resection or the positioning needle 24 may have an error in positioning the lesion 21. At this time, the positioning line 13 needs to be recovered. If the positioning line 13 is directly pulled out with force, the anchor hook 131 structure on the positioning line 13 will hinder the pulling out of the positioning line 13 and cause tissue damage. There are also cases such as Figure 2 The problem shown is that the positioning wire 13 has undergone a displacement change 25 compared to the path when it was released, and the positioning wire 13 cannot be pulled out along the existing release channel.

[0028] In view of the above problems, the present invention provides a positioning line 13 recovery device, combined with Figure 3 As shown, it includes a moving part 11, a recovery body 12, and an actuating part (not shown); the moving part 11 can move between muscle tissues to approach the anchor hook 131 of the positioning line 13; in some embodiments, the moving part 11 can be a smooth tip that can slide between muscle tissues without damaging the tissues.

[0029] The recovery body 12 comprises a recovery channel 14 for accommodating the positioning line 13, which is relatively slidable with respect to the recovery channel 14; the recovery channel 14 is mainly used to define the active range of the positioning line 13 and to pull away, and to establish a channel for the recovery of the positioning line 13.

[0030] The actuating part is used to pull the positioning line 13, and after the recovery body 12 is pushed, the positioning line 13 is relatively slidable with respect to the recovery channel 14, so that the moving part 11 abuts against the anchor hook 131; during the navigation process, the pulling force of the actuating part is small, which makes the positioning line 13 tight but does not displace, and in this way, after the moving part 11 is pushed, the tightness of the positioning line 13 makes the moving part 11 better navigate along the positioning line 13 to the anchor hook 131. After the moving part 11 abuts against the anchor hook 131, the actuating part pulls the positioning line 13 to recover the anchor hook 131 into the recovery channel 14. At this time, the pulling force is much greater than that during the navigation process, so as to pull the anchor hook 131 into the recovery channel 14. The moving part 11 preferably uses a harder material or is coated with a reinforced coating, in this way, after the moving part 11 abuts against the anchor hook 131, it can provide better support for the actuating part to pull the anchor hook 131, facilitating the recovery of the anchor hook 131.

[0031] The actuating part (not shown) can be various transmission devices that provide pulling force to the positioning line 13, which can be manually pulled, or a combination of a winding wheel and a handle for controlling the winding wheel, when the handle is turned, the handle will drive the winding wheel to rotate to provide pulling force to the positioning line 13. When the actuating part is a mechanical transmission device, it can be provided on the recovery body 12 or independently provided outside the recovery body 12.

[0032] In some embodiments, as Figure 4As shown, the positioning wire 13 recovery device further includes an opening 15 disposed on the recovery body 12 and proximate to the movable portion 11. The opening 15 connects the movable portion 11 with a recovery channel 14, which is a groove 141 disposed on the outer wall of the recovery body 12. The positioning wire 13 passes through the movable portion 11 and then exits the opening 15, engaging the groove 141 at the opening 15. The proximity of the opening 15 to the movable portion 11 reduces the required length of the positioning wire 13 exposed to the surface of the skin 22. In the above scheme, the length of the positioning line 13 exposed on the surface of the skin 22 needs to reach the length of the recovery channel 14 before it can be connected to the actuator part (the positioning line 13 can be extended with the help of other devices or methods), while in this scheme, the length of the positioning line 13 exposed on the surface of the skin 22 only needs to reach the length from the movable part 11 to the opening 15 to be connected to the actuator part. Under the action of the actuator part, as the positioning line recovery device moves relative to the positioning line 13, the length of the positioning line 13 pulled out of the opening 15 gradually increases and fits the groove 141.

[0033] In some embodiments, a spring tube 16 is disposed within the recovery body 12 and is coaxially connected to the recovery body 12. The spring tube 16 can be disposed within the recovery body 12 (either separately or integrally). This configuration enhances the toughness of the recovery body 12, allowing the recovery body 12 to bend without buckling during the recovery process and to resist deformation in the radial direction under compression, thereby ensuring unobstructed flow of the recovery channel 14.

[0034] In some embodiments, the recovery channel 14 has a fixed diameter, which is larger than the diameter of the positioning line 13, smaller than the diameter of the anchor hook 131 in the expanded state, and larger than the diameter of the anchor hook 131 in the contracted state (e.g., Figure 5 (as shown). The diameter of the recovery channel 14 should be minimized. On the one hand, the diameter of the recovery channel 14 determines the diameter of the recovery body 12. A recovery body 12 with a smaller diameter encounters less resistance when pushed into muscle tissue, making it easier to push into the muscle tissue. On the other hand, the smaller diameter of the recovery channel 14 is closer to the central axis of the positioning line 13. After contacting the anchor hook 131, the anchor hook 131 can be evenly stressed and retracted toward the central axis.

[0035] In some embodiments, the recycling body 12 is bendable with the movement of the moving portion 11 and is not compressed when squeezed. Polyethylene can be selected as the material for making the recycling body 12.

[0036] The present invention also provides a method for using a positioning line 13 recovery device, using the positioning line 13 recovery device as described above, step one: introduce the positioning line 13 exposed to the skin 22 into the recovery channel 14 through the movable part 11, and connect it to the actuating part. Step two: the actuating part tightens the positioning line 13 and pushes the recovery body 12 forward, the recovery channel 14 in the recovery body 12 slides along the tightened positioning line 13, and the recovery body 12 gradually enters the skin 22. The structure of the movable part 11 enables the recovery body 12 to adjust the propulsion direction of the recovery body 12 in the muscle tissue, and finally the movable part 11 abuts against the anchor hook 131; step three: after the movable part 11 abuts against the anchor hook 131, continue to pull the positioning line 13 to retract the anchor hook 131 into the recovery channel 14; step four: pull the positioning line 13 recovery device out of the body as a whole.

[0037] In some embodiments, the length of the positioning wire 13 exposed on the surface of the skin 22 is insufficient to connect to the actuator, and a nickel-titanium guide wire can be used to cross and fold the positioning wire 13 to secure it. The actuator pulls the nickel-titanium guide wire to pull the positioning wire 13. Other methods can also be used to extend the positioning wire 13.

[0038] Those skilled in the art will readily recognize other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the invention being indicated by the following claims.

[0039] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A positioning line recovery device, characterized in that: The invention comprises a moving part, a recovery body and an actuating part; the moving part is provided at the end of the recovery body and can move between muscle tissues to approach the anchor hook of the positioning line; the recovery body comprises a recovery channel, the recovery channel is used to accommodate the positioning line, and the positioning line can slide relative to the recovery channel; the actuating part is connected to the positioning line and is used to tighten the positioning line. When the recovery body is advanced, the recovery channel slides along the tightened positioning line so that the moving part abuts the anchor hook; when the moving part abuts the anchor hook, the actuating part pulls the positioning line to retract the anchor hook into the recovery channel.

2. The positioning wire recovery device according to claim 1, characterized in that: The moving portion is a tip.

3. The positioning wire recovery device according to claim 1, characterized in that: The positioning line recovery device also includes: an opening, which is arranged on the recovery body and is close to the moving part; the opening connects the moving part and the recovery channel; the recovery channel is a groove arranged on the outer wall of the recovery body.

4. The positioning wire recovery device according to claim 1, wherein: A spring tube is provided in the recovery body, and the spring tube is coaxially connected to the recovery body.

5. The positioning wire recovery device according to claim 2, characterized in that: The tip is provided with a reinforcement coating.

6. The positioning wire recovery device according to claim 2, wherein: The recovery channel has a fixed diameter, which is larger than the diameter of the positioning line, smaller than the diameter of the anchor hook in an expanded state, and larger than the diameter of the anchor hook in a contracted state.

7. The positioning wire recovery device according to claim 1, wherein: The recovery body can be bent as the moving part moves, and is not easily deformed when squeezed in the radial direction.

8. The positioning wire recovery device according to claim 1, wherein: It also includes a nickel-titanium guide wire, which is cross-folded and fixed with the positioning wire. The actuating part pulls the positioning wire by pulling the nickel-titanium guide wire.

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