Pulmonary nodule positioning needle based on angle gauge

Abstract

The utility model discloses a pulmonary nodule positioning needle based on an angle gauge, and aims to overcome the defects of insufficient local anesthesia depth, incapability of displaying real-time depth and angle and the like of a conventional pulmonary nodule puncture positioning needle under the guidance of CT (Computed Tomography). The function of integrating three steps of anesthesia, puncture and positioning in the CT-guided pulmonary nodule positioning operation is achieved. Meanwhile, the structure of the puncture handle is improved, a horizontal angle gauge is fused, the puncture angle can be displayed in real time, the operation efficiency and the positioning accuracy are improved, and meanwhile wounds and radiation dosage borne by a patient are reduced to the maximum extent.

Description

Technical Field

[0001] The utility model belongs to the medical field, and in particular relates to a pulmonary nodule positioning needle based on an angle meter. Background Art

[0002] Pulmonary nodules refer to round or oval lesions with a diameter of less than 3 cm found in lung tissue. They are usually found in chest imaging examinations (such as chest X-rays, CT scans, etc.). Their nature cannot be directly determined in the early stage. They may be benign or malignant. At the same time, pulmonary nodules can be single or multiple, and may be primary (originated from the lungs) or secondary (metastasis from other parts). Early diagnosis and surgery of pulmonary nodules are very important.

[0003] With the improvement of people's health awareness and the advancement of lung nodule screening technology, there are now effective diagnostic and surgical methods for lung nodules. The development of percutaneous lung biopsy has provided help for clinical differentiation of benign and malignant lung nodules; video-assisted thoracoscopic surgery is a minimally invasive peripheral wedge resection that can maximize the preservation of normal lung tissue and remove target lung nodules. Whether it is biopsy of the lesion through percutaneous lung biopsy or targeted treatment of lung nodules through video-assisted thoracoscopic surgery, it is necessary to accurately locate the lung nodules through puncture.

[0004] At present, the most widely used clinical positioning technology is CT-guided positioning technology. First, local anesthesia is performed on the patient's chest. The doctor slowly pushes the positioning needle according to the image provided by CT. The direction and depth of the needle insertion depend on the doctor's personal experience. Under normal circumstances, the process of preoperative positioning of a lung nodule needs to be corrected more than three times before the positioning needle can accurately fall on the lung nodule site and then release the locator. Not only does it cause damage to the patient's health by exposing the patient to multiple radiations, but the process of repeatedly correcting the direction and depth of the positioning needle can also easily cause damage to the patient's skin and tissues, causing unnecessary pain to the patient. Secondly, when locating the lung nodule before surgery, it is necessary to first puncture the local anesthesia with a syringe, and then the positioning needle passes through the wound formed by the local anesthesia. Since there are two punctures in the whole process, local anesthesia puncture and positioning puncture, it is easy to cause secondary damage to the patient; and when locating deep lung nodules, the local anesthesia needle is often not deep enough, and the patient feels obvious pain when the puncture needle penetrates deep.

[0005] It can be seen that the current clinical positioning puncture surgery for lung nodules not only causes two traumas, the anesthesia needle and the positioning needle, but also has low puncture efficiency. The entire puncture process relies too much on the doctor's personal experience and requires repeated corrections of the depth and angle of the positioning needle, causing more pain to the patient. At the same time, too many CT scans will also affect the patient's health.

[0006] The existing integrated positioning needle for anesthesia can only inject anesthetics from the positioning needle tube, and the positioning efficiency is still very low. The doctor still needs to rely on personal experience to advance the positioning needle, and the existing integrated positioning needle for anesthesia has health and safety risks.

[0007] In addition, the existing angle control auxiliary instruments for puncture and positioning needles are all auxiliary angle meters independent of the positioning needle. They are expensive to manufacture, difficult to operate, and occupy a large space. In actual clinical surgery, it is difficult for doctors to control the angle meter and the positioning needle at the same time, which may cause greater safety hazards. At the same time, most of the existing angle meters are non-disposable designs. Repeated use will contaminate the positioning needle and even cause wound infection, and long-term use will easily affect the accuracy. There are also positioning needles that display angles through metal structures such as electronic components. The preparation cost is high, and it will affect the CT scanning process during surgery, causing imaging interference.

[0008] Therefore, there is a clinical need for a disposable lung nodule localization needle that can display angles and has anesthesia function. Utility Model Content

[0009] In view of the above-mentioned defects, the utility model provides a lung nodule localization needle based on an angle meter, which can realize the three-step function of anesthesia-puncture-localization in CT-guided lung nodule localization surgery.

[0010] A pulmonary nodule positioning needle based on an angle meter comprises a positioning component, an anesthesia component and an angle meter; the positioning component comprises a puncture needle and a pusher and a positioner arranged in the puncture needle, the puncture needle is a hollow needle tube, connected to the anesthesia component; the pusher comprises a push core and a push button connected to the push core, the push core penetrates the inside of the anesthesia component and the puncture needle, and the push button is located at the top of the anesthesia component; the positioner is located at the puncture needle outlet and contacts with the push core, the push button drives the push core to move, and the push core drives the positioner to move along the puncture needle tube wall; the anesthesia component comprises an anesthesia injection main pipe, the anesthesia injection main pipe is detachably connected to the puncture needle and the push button, and the anesthesia injection main pipe is provided with an anesthetic injection port for injecting anesthetic; the angle meter is arranged on the puncture needle, and is used to display the angle between the puncture needle and the horizontal plane.

[0011] Preferably, a shell assembly for protecting the positioning needle is provided outside the puncture needle, including a protective tube and a protective cover. The protective tube is located outside the puncture needle to prevent the puncture needle from being polluted and damaged by the environment, and the protective cover is located outside the push button to prevent accidental touch.

[0012] Preferably, the positioner comprises a positioning line and a positioning hook which are connected to each other, the positioning line is arranged inside the push core, and the positioning hook is arranged at the end of the push core.

[0013] Preferably, the anesthesia component further comprises a one-way valve, which is located at the anesthetic injection port to avoid contamination of the interior of the needle tube.

[0014] Preferably, the anesthesia assembly further comprises an anesthesia tube auxiliary tube, which is arranged on the side wall of the anesthesia injection main tube and is connected to the anesthesia injection main tube through the anesthetic injection port for injecting anesthetic from the side.

[0015] Preferably, the positioning assembly further comprises a cursor, and the cursor is slidably connected to the puncture needle.

[0016] Preferably, the inclinometer is detachably connected to the puncture needle, and the inclinometer can rotate around the puncture needle to adjust the direction of the pointer.

[0017] Preferably, the inclinometer is slidably connected to the puncture needle and is used as a cursor.

[0018] Preferably, the inclinometer is a gravity pointer inclinometer, a liquid inclinometer, or a reverse gravity pointer inclinometer.

[0019] Preferably, the puncture needle is provided with a length scale for displaying the needle insertion depth.

[0020] The beneficial effects of the utility model are:

[0021] (1) The utility model integrates the positioning needle and the angle meter into an integrated design, which is highly practical and has a low cost. At the same time, the positioning needle is a disposable consumable, which is clean and hygienic. The consumable is in great demand and has considerable profit margins, and has broad application prospects and clinical promotion value.

[0022] (2) The positioning needle disclosed in the utility model has an anesthesia inlet, and the anesthesia inlet is provided with a one-way valve, which can prevent bacteria from entering the interior of the positioning needle through the anesthesia inlet, thereby reducing the risk of infection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.

[0024] Figure 1 This is a schematic diagram of the positioning needle structure of the gravity pointer angle meter of Example 1 of the utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the angle meter of Embodiment 2 of the utility model when used as a cursor;

[0026] Figure 3 This is a schematic diagram of the positioning needle structure of the reverse gravity pointer angle meter of Example 3 of the present utility model;

[0027] Figure 4 It is a schematic diagram of the positioning needle structure of the liquid angle meter according to the fourth embodiment of the utility model.

[0028] Reference numerals:

[0029] 10-Angle meter, 101-Cavity, 102-Gravity pointer,

[0030] 11-puncture needle, 12-cursor, 13-push device, 14-positioner, 15-protection tube, 16-protection cover, 17-check valve, 18-anesthesia injection main tube, 19-anesthesia injection auxiliary tube;

[0031] 21- angle meter, 31- reverse gravity pointer angle meter, 311- movable scale, 312- pointer, 41- gravity angle meter. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Example 1

[0034] like Figure 1 As shown, a lung nodule positioning needle based on an angle meter includes: a positioning component, a shell component, an anesthesia component and an angle meter.

[0035] The positioning assembly is the core component of the positioning needle, including a puncture needle 11 with a scale, a movable cursor 12, a pusher 13 and a positioner 14. The puncture needle 11 is a hollow needle tube with a certain inner diameter, and it can be an integrated design with the anesthesia assembly, that is, the upper part of the puncture needle 11 and the vertical channel of the anesthesia assembly share the same hollow straight tube; the puncture needle 11 and the anesthesia assembly can also be detachably connected, for example, the anesthesia assembly is connected to the puncture needle 11 by means of threads or snaps, and this embodiment does not limit the connection method. The cursor 12 is arranged on the outer surface of the puncture needle 11 and is slidably connected to the puncture needle tube. The function of the cursor 12 is to accurately set the depth of the needle before insertion to improve the accuracy of positioning. In this embodiment, the cursor 12 is made of rubber and has a certain friction force, so that it can stay stably at any position of the puncture needle 11. The pusher 13 is used to fix the positioning hook on the positioner 14 at the lung nodule. The pusher 13 includes a push core and a push button. The push core is a slender core. The push button is located at the upper part of the anesthesia component. It is a button with an elastic setting, and its interior is fixedly connected to the push core. When the doctor presses the push button on the top, the push core moves downward along the pipeline of the puncture needle 11; when the doctor releases the button, the push core rebounds to its original position. In this embodiment, a platform is provided at the lower end of the push button, which serves as a force-bearing platform for the push button, so that the push button produces a certain elastic deformation. At the same time, the platform serves as a connecting component and is detachably connected to the anesthesia component. A hole is opened in the center of the platform, and the push core passes through the small hole in the middle of the platform to reach the inside of the anesthesia component and the puncture needle 11. The locator 14 is located inside the puncture needle 11 near the exit and contacts the push core. The locator 14 includes a positioning line and a positioning hook. The positioning line is an extremely thin cotton thread located inside the push core; the positioning line is connected to the positioning hook. In the present embodiment, the positioning hook is an anchor hook in the shape of an upwardly curved hook, which increases the anchoring property and facilitates fixation at the position of the lung nodule. In practice, it can be a grab hook, a spring coil, a barbed needle or other structures that can be fixed at the lung nodule. The present embodiment does not limit this. As long as the structure can be anchored at the position of the lung nodule, it is within the scope of protection of the present application.

[0036] The shell assembly is used to protect the positioning assembly, including a protection tube 15 and a protection cover 16. The protection tube 15 is located outside the puncture needle 11 to prevent the puncture needle 11 from being polluted and damaged by the environment. The protection cover 16 is located outside the push button to prevent the push core from being pushed prematurely due to touching the push button.

[0037] The anesthesia assembly includes an anesthesia injection main pipe 18, an anesthesia injection sub-pipe 19 and a one-way valve 17. The anesthesia injection main pipe 18 is located at the top of the puncture needle 11. In the present embodiment, the anesthesia injection main pipe 18 is a conical design with the top of the cone facing upward, which is convenient for hand-held operation. At the same time, the conical setting allows the injected anesthetic to enter the pipe better. The anesthesia injection sub-pipe 19 is located on one side of the anesthesia injection main pipe 18 and is connected to the anesthesia injection main pipe 18. It is a port extending outward from the anesthesia injection main pipe 18 and is used to inject anesthetic. The one-way valve 17 is arranged at the injection port of the anesthesia injection sub-pipe 19, or at the connection between the anesthesia injection sub-pipe 19 and the anesthesia injection main pipe 18. Its purpose is to only allow liquid to flow from the anesthesia injection sub-pipe 19 into the anesthesia injection main pipe 18, so as to prevent external contaminants from entering the needle tube. The anesthesia assembly is fixedly connected to the puncture needle 11, and the top of the anesthesia injection main pipe 18 is the above-mentioned platform.

[0038] The angle meter 10 is located on the puncture needle 11 and is used to display the angle between the positioning needle and the horizontal plane. The angle meter used in this embodiment is a gravity pointer angle meter 10. The angle meter is fixed to the top of the puncture needle 11 by means of a snap. The doctor can observe the angle between the positioning needle and the horizontal plane at any time during operation, which is convenient for accurate needle pushing. At the same time, the angle meter in this example can rotate around the puncture needle 11, and the doctor can adjust the direction of the gravity pointer angle meter 10 according to his own operating habits. The gravity pointer angle meter 10 consists of a semicircular cavity 101 with a scale and a gravity pointer 102. The gravity pointer 102 is arrow-shaped and has a certain weight. It always points vertically downward under the action of gravity. When the positioning needle is tilted, the scale in the semicircular cavity 101 pointed by the gravity pointer 102 is the tilt angle of the positioning needle at this time. The doctor can locate the patient's lung nodule at one time based on the tilt angle and the position of the cursor 12.

[0039] In this embodiment, all components of the pulmonary nodule anesthesia positioning needle based on the gravity pointer angle meter 10 are disposable.

[0040] The working mode of the positioning needle disclosed in this application is:

[0041] In clinical operation, the doctor obtains the positioning needle in this case and removes the protective tube 15 first. According to the lung nodule image scanned by CT, the location information of the lung nodule, that is, the depth and angle of the lung nodule from the patient's chest surface, is obtained. The cursor 12 is pre-adjusted to the appropriate depth scale, and the angle meter 10 is observed at the same time to control the needle angle and slowly push it into the patient's chest. During the advancement process, an anesthetic needle is used to inject anesthetic from the anesthesia injection sub-tube 19. The injection of anesthetic and the pushing of the needle are carried out simultaneously until the cursor 12 touches the patient's skin and the pushing of the needle is stopped. At this time, the doctor removes the protective cover 16, presses the push button, and the push core pushes the positioning hook to be fixed at the position of the lung nodule. Then, the push button is slowly pulled out to pull out the push core. After the push core is completely pulled out, the puncture needle 11 is slowly pulled out. When the needle tip of the puncture needle 11 reaches the patient's pleura, anesthetic is injected from the anesthesia injection sub-tube 19 again to reduce the patient's pleural reaction. Finally, the puncture needle 11 is completely pulled out.

[0042] The entire process of this embodiment only requires one CT scan before needle insertion, which greatly reduces the radiation that patients are exposed to due to repeated corrections and scans when locating lung nodules, and also reduces the burden of corrections on doctors. The integrated puncture and anesthesia design performs anesthesia at the same time as puncture positioning, so that the patient does not need to suffer repeated trauma. When the anesthetic is injected for the second time, the air pressure is more stable due to the two openings, and there will be no backflow of anesthetic.

[0043] Example 2

[0044] like Figure 2 As shown, the inclinometer is directly used as a vernier, and the other components are arranged the same as in Example 1.

[0045] This embodiment also uses a gravity angle meter. The angle meter 21 displays the same angle principle as in the first embodiment, but the angle meter in this embodiment is a smaller version of the angle meter in the first embodiment, and the purpose is to be set inside the protection tube 15 and outside the puncture needle 11, and used as a cursor of the puncture needle. Such a design can reduce the setting of the cursor and effectively reduce the weight of the positioning needle.

[0046] The angle meter 21 is slidably connected to the puncture needle 11. In this embodiment, a hollow rubber ring is sleeved on the outer wall of the puncture needle so that the angle meter 21 can slide up and down and be fixed at any scale position.

[0047] The positioning needle disclosed in this embodiment only needs one angle meter 21 to simultaneously present the angle and depth information. Compared with Example 1, the advantage is that the doctor only needs to pay attention to the angle meter during the operation, and does not need to pay attention to the cursor and the angle at the same time. This allows the doctor to be more focused during the operation and improves the success rate of the operation.

[0048] Example 3

[0049] like Figure 3As shown, the inclinometer used is a reverse gravity pointer inclinometer 31, and the other components are arranged the same as in Example 1.

[0050] The reverse gravity pointer angle meter 31 includes a movable scale 311 and a pointer 312. The reverse gravity pointer angle meter 31 in this embodiment is a disc-shaped, and a movable shaft is set in the center of the disc. The movable scale 311 can rotate around the center of the disc, and there is a gravity block 312 below it. The gravity block is always vertical and horizontal due to gravity. The pointer 312 is fixed on the disc, and its direction is always on the central axis of the positioning needle and points to the push button. In actual operation, when the positioning needle is tilted, the movable scale 311 rotates relatively, and the angle indicated by the pointer 312 is the tilt angle of the puncture needle.

[0051] The reverse gravity pointer inclinometer 31 in this embodiment can be normally detachably connected to the puncture needle 11 and used only as an inclinometer, or it can be slidably connected to the outside of the puncture needle 11 and inside the protective tube 15 as in Example 2 and used as an inclinometer and cursor.

[0052] Example 4

[0053] like Figure 4 As shown, the angle meter used is a liquid angle meter 41, and the arrangement of other components is the same as that of embodiment 1.

[0054] The liquid angle meter 41 includes a disc cavity, half of which is filled with solution, and the periphery of the cavity is engraved with scales. When the positioning needle is tilted, the current inclination angle of the puncture needle can be obtained according to the scale where the liquid surface of the solution is located. The liquid angle meter 41 can rotate around the puncture needle.

[0055] In special cases, the cavity can also be spherical, with a channel in the middle of the spherical cavity for the puncture needle to pass through, and a scale is engraved inside the spherical cavity. When the puncture needle is tilted, the inclination angle of the puncture needle at this moment can be obtained according to the position of the liquid surface. The advantage of the angle meter in this embodiment being a liquid angle meter 41 is that the angle information can be seen at 360 degrees without the need to rotate the angle meter.

[0056] The liquid angle meter 41 in this embodiment can be normally detachably connected to the puncture needle 11 and used only as an angle meter, or it can be slidably connected to the outside of the puncture needle 11 and inside the protective tube 15 as in Example 2 and used as an angle meter and a vernier.

[0057] Example 5

[0058] The goniometers in the above-mentioned embodiments 1, 3 and 4 are characterized in that the goniometers are detachable and reusable, that is, the goniometer can be removed from one positioning pin and installed on another positioning pin for use, which saves costs and prevents the waste of discarding the entire positioning pin due to damage of the goniometer in certain cases. When the goniometer is damaged or inaccurate, the goniometer can be directly removed and replaced; and it is suitable for situations where some doctors are not accustomed to using the goniometer and can be directly removed.

[0059] The pulmonary nodule localization needle based on the angle meter disclosed in the utility model aims to solve the defects of the conventional CT-guided pulmonary nodule puncture localization needle, such as insufficient local anesthesia depth and inability to display real-time depth and angle. By reasonably expanding the inner diameter of the puncture needle and adding an injection sub-port with a valve, the three-step function of anesthesia-puncture-positioning in the CT-guided pulmonary nodule localization operation is realized. At the same time, the puncture handle structure is improved, and the horizontal angle meter is integrated, which can display the puncture angle in real time, aiming to improve the surgical efficiency and positioning accuracy, while minimizing the trauma and radiation dose suffered by the patient.

[0060] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pulmonary nodule localization needle based on an angle meter, characterized in that: Includes positioning components, anesthesia components and angle gauges; The positioning assembly comprises a puncture needle (11) and a pusher (13) and a positioner (14) arranged in the puncture needle (11); the puncture needle (11) is a hollow needle tube and is connected to the anesthesia assembly; the pusher comprises a push core and a push button connected to the push core; the push core penetrates the anesthesia assembly and the puncture needle, and the push button is located at the top of the anesthesia assembly; the positioner (14) is located at the outlet of the puncture needle (11) and contacts the push core; the push button drives the push core to move, and the push core drives the positioner (14) to move; The anesthesia assembly comprises an anesthesia injection main pipe (18), the anesthesia injection main pipe (18) is detachably connected to the puncture needle (11) and the push button, and the anesthesia injection main pipe (18) is provided with an anesthetic injection port for injecting anesthetic; The inclinometer (10) is arranged on the puncture needle (11) and is used to display the angle between the puncture needle (11) and the horizontal plane.

2. The pulmonary nodule localization needle based on an angle meter according to claim 1, characterized in that: The anesthesia component further comprises an anesthesia tube auxiliary tube (19), wherein the anesthesia tube auxiliary tube (19) is arranged on a side wall of the anesthesia injection main tube (18) and is in communication with the anesthesia injection main tube (18).

3. The pulmonary nodule localization needle based on an angle meter according to claim 2, characterized in that: The anesthesia component further comprises a one-way valve (17), wherein the one-way valve (17) is located at the injection port of the anesthesia tube auxiliary tube (19) and is used to avoid contamination of the interior of the needle tube.

4. The pulmonary nodule localization needle based on an angle meter according to any one of claims 1 to 3, characterized in that: The positioner (14) comprises a positioning line and a positioning hook which are connected to each other, the positioning line is arranged inside the push core, and the positioning hook is arranged at the end of the push core.

5. The pulmonary nodule localization needle based on an angle meter according to claim 4, characterized in that: The positioning assembly further comprises a cursor (12), wherein the cursor (12) is slidably connected to the puncture needle (11).

6. The pulmonary nodule localization needle based on an angle meter according to any one of claims 1 to 3, characterized in that: The puncture needle (11) is provided with a housing assembly for protecting the positioning needle, comprising a protection tube (15) and a protection cover (16); the protection tube (15) is located outside the puncture needle (11) and is used to prevent the puncture needle from being polluted and damaged by the environment; the protection cover (16) is located outside the push button and is used to prevent accidental touching.

7. The pulmonary nodule localization needle based on an angle meter according to claim 1, characterized in that: The inclinometer (10) is arranged as a whole outside the puncture needle (11) and is detachably connected to the puncture needle (11). The inclinometer (10) can rotate around the puncture needle (11) to adjust the direction of the pointer.

8. The pulmonary nodule localization needle based on an angle meter according to claim 1, characterized in that: The inclinometer (10) is integrally arranged on the puncture needle (11), is slidably connected to the puncture needle (11), and is used as a cursor.

9. The pulmonary nodule localization needle based on an angle meter according to claim 7 or 8, characterized in that: The inclinometer (10) is a gravity pointer inclinometer, a liquid inclinometer, or a reverse gravity pointer inclinometer.

10. The pulmonary nodule localization needle based on an angle meter according to claim 1, characterized in that: The puncture needle (11) is provided with a length scale for displaying the needle insertion depth.

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