A puncture positioning needle for lung nodules

Abstract

The utility model relates to the technical field of auxiliary equipment for the removal of pulmonary nodules, a pulmonary nodule puncture positioning needle, comprising an outer sheath, the outer sheath comprising an upper sheath cavity and a lower sheath cavity, the upper sheath cavity and the lower sheath cavity being an integrally formed structure; an inner core, the inner core being inserted into the outer sheath; a silk thread assembly being inserted into the inner core; an elastic member, one end of the elastic member being fixedly connected to the inner core, the other end of the elastic member being fixedly connected to the end wall of the lower sheath cavity, and the end diameter of the inner core being larger than the cavity diameter of the lower sheath cavity, the elastic member being located in the upper sheath cavity; and an outer plug. The pulmonary nodule puncture positioning needle disclosed in the utility model is configured such that the outer sheath and the inner core are integrally formed, so that when puncturing, the outer sheath and the inner core can be percutaneously punctured into the pulmonary nodule site at one time, which can not only reduce the difficulty of operation, but also reduce the risk during the puncture process, while improving the success rate of positioning, so that surgeons can effectively find pulmonary nodules and perform removal surgery when performing thoracoscopy and other surgeries.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary equipment for pulmonary nodule lesion resection, in particular to a pulmonary nodule puncture positioning needle. Background Art

[0002] Pulmonary nodules are defined as focal, dense, ground-glass, or mixed nodules with clear or blurred margins and a diameter of 3 cm or less on lung imaging. Such nodules are often difficult to locate during surgical resection and require preoperative localization.

[0003] Lung nodule localization is primarily categorized as preoperative and intraoperative. Currently, most hospitals utilize preoperative localization methods, such as CT positioning, three-dimensional virtual positioning, and electromagnetic navigation. However, a small number of hospitals, with improved facilities, can utilize intraoperative localization. CT positioning is currently the most commonly used method. CT positioning involves percutaneous placement of metal coils or metal hooks under CT guidance. Alternatively, injection of dyes or radionuclides can be used for localization. Currently, some localization needles are used separately for localization. The outer sheath of the localization needle is first inserted through the skin to the site of the lung nodule. An inner core containing a metal coil is then passed through the outer sheath to the site of the lung nodule. Finally, the metal coil is pushed from the inner core until it enters the body, achieving localization. However, this method is cumbersome and requires the physician to ensure the accuracy of the outer sheath before inserting the inner core. This increases the difficulty of the procedure and the risk of air embolism. It also increases the risk of sheath migration and the failure rate of localization.

[0004] Therefore, there is an urgent need for a lung nodule puncture positioning needle to solve the above problems. Utility Model Content

[0005] The purpose of the present utility model is to provide a pulmonary nodule puncture positioning needle to solve the problems existing in the prior art. By setting the outer sheath and the inner core as an integrated structure, the outer sheath and the inner core can be percutaneously punctured into the lung to the pulmonary nodule site at one time during puncture. This not only reduces the difficulty of operation, but also reduces the risk during the puncture process, while improving the success rate of positioning, allowing surgeons to effectively find pulmonary nodules and perform resection surgery during thoracoscopy and other operations. Furthermore, the pulmonary nodule puncture positioning needle disclosed in the present application has a simple structure, is easy to operate, and is highly practical.

[0006] To achieve the above-mentioned purpose, the present invention provides the following solution: The present invention provides a pulmonary nodule puncture positioning needle, comprising:

[0007] An outer sheath, the outer sheath comprising an upper sheath cavity and a lower sheath cavity, the upper sheath cavity and the lower sheath cavity being an integrally formed structure;

[0008] An inner core, the inner core being inserted into the outer sheath; a wire assembly being inserted into the inner core;

[0009] An elastic member, wherein one end of the elastic member is fixedly connected to the inner core, and the other end of the elastic member is fixedly connected to the end wall of the lower sheath cavity, and the diameter of the end of the inner core is larger than the cavity diameter of the lower sheath cavity, wherein the diameter of the inner core body is well matched with the lower sheath cavity, and the elastic member is located in the upper sheath cavity;

[0010] The external plug is moved downward from the upper sheath cavity along a first direction until the wire assembly is placed inside the pulmonary nodule or at the edge of the nodule during puncture positioning.

[0011] Preferably, the cavity diameter of the upper sheath cavity is larger than the cavity diameter of the lower sheath cavity.

[0012] Preferably, it further comprises an end cavity, wherein the end cavity and the upper sheath cavity are an integrally formed structure, and the end cavity is a trumpet-shaped structure.

[0013] Preferably, the inner core comprises:

[0014] An inner core body, wherein a cavity is defined in the inner core body, and the wire assembly is passed through the cavity;

[0015] A mounting seat, the inner core body is fixedly connected to the mounting seat, and the diameter of the mounting seat is larger than the cavity diameter of the lower sheath cavity;

[0016] One end of the elastic member is fixed on the mounting seat, and the elastic member is wound around the outer side of the inner core body.

[0017] Preferably, the external plug comprises:

[0018] A pressing seat, the pressing seat having a trumpet-shaped structure, and the outer diameter of the pressing seat is consistent with the inner diameter of the end cavity, and when positioned, the pressing seat is adapted to fit in the end cavity;

[0019] A connector is fixedly connected below the pressing seat, and during positioning, the bottom of the connector contacts the top of the mounting seat.

[0020] Preferably, the length of the outer plug is greater than the length of the upper sheath cavity.

[0021] Preferably, the elastic member is a spring.

[0022] Preferably, the wire assembly comprises:

[0023] a silk thread, the silk thread being located in the cavity;

[0024] The metal wire is fixedly connected to the silk thread, and the metal wire is located in the lower sheath cavity and curls into a ball after being pushed out of the outer sheath.

[0025] The utility model discloses the following technical effects: the lung nodule puncture positioning needle disclosed in the utility model is configured as an integral structure of the outer sheath and the inner core, so that when puncturing, the outer sheath and the inner core can be percutaneously punctured into the lung to the lung nodule site at one time, which not only reduces the difficulty of operation, but also reduces the risk during the puncture process, while improving the success rate of positioning, allowing surgeons to effectively find lung nodules and perform resection surgery when performing thoracoscopy and other operations; furthermore, the lung nodule puncture positioning needle disclosed in the present application has a simple structure, is easy to operate, and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 Schematic diagram of the structure of the outer sheath;

[0028] Figure 2 for Figure 1 sectional view of

[0029] Figure 3 for Figure 2 A partial enlarged view of middle A;

[0030] Figure 4 for Figure 2 A partial enlarged view of B in the middle;

[0031] Figure 5 Schematic diagram of the structure of the inner core;

[0032] Figure 6 Schematic diagram of the structure of the wire assembly;

[0033] Figure 7 Schematic diagram of the structure of the external plug;

[0034] Among them, 1. outer sheath; 101. upper sheath cavity; 102. lower sheath cavity; 103. end cavity; 2. inner core; 201. inner core body; 202. mounting seat; 3. wire assembly; 301. wire; 302. metal wire; 4. outer plug; 401. connector; 402. pressing seat; 6. spring. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0037] Reference Figure 1-Figure 7 The utility model provides a pulmonary nodule puncture positioning needle, comprising

[0038] The outer sheath 1 includes an upper sheath cavity 101 and a lower sheath cavity 102, and the upper sheath cavity 101 and the lower sheath cavity 102 are an integrally formed structure;

[0039] An inner core 2, the inner core 2 is inserted into the outer sheath 1; a wire assembly 3 is inserted into the inner core 2;

[0040] An elastic member, one end of which is fixed to the inner core 2, and the other end of which is fixed to the end wall of the lower sheath cavity 102, and the end diameter of the inner core 2 is larger than the cavity diameter of the lower sheath cavity 102, and the elastic member is located in the upper sheath cavity 101; wherein the elastic member is a spring 6;

[0041] When the external plug 4 is being positioned for puncture, the external plug 4 is moved downward from the upper sheath cavity 101 along a first direction until the thread assembly 3 is placed inside the pulmonary nodule or at the edge of the nodule.

[0042] Specifically, such as Figure 2-Figure 4 As shown, before the pulmonary nodule puncture positioning needle disclosed in the present application is used, its inner core 2 is arranged in the outer sheath 1 through an elastic member, that is, the outer sheath 1 and the inner core 2 are set to an integral structure, so that during puncture, when the outer sheath 1 punctures the pulmonary nodule site, the inner core 2 is also located at the pulmonary nodule site accordingly. At the same time, the wire assembly 3 is also placed in the inner core 2 during production. After the puncture is completed, the outer plug 4 is directly pressed. The outer plug 4 moves downward and compresses the elastic member, thereby driving the inner core 2 to move downward, causing the wire assembly 3 to move downward until the wire assembly 3 falls to the pulmonary nodule site. Due to the setting of the elastic member, the inner core 2 can perform a rebound motion, that is, the outer plug 4 can be pressed repeatedly until the metal wire 302 of the wire assembly 3 is completely pushed to the pulmonary nodule site.

[0043] Operation steps: Preliminarily determine the lung nodule to be located, as well as the puncture depth and angle based on the preoperative CT scan. During the operation, the patient lies on the examination and treatment bed, and undergoes another CT scan to determine the skin puncture point, puncture angle and depth. Routinely disinfect and lay a drape on the puncture site. After local anesthesia, puncture the outer sheath 1 and the inner core 2 to the predetermined position (the area where the lung nodule is located) according to the predetermined puncture angle and depth, and perform a parallel CT scan to determine that the needle tip is at the predetermined position. Insert the outer plug 4 into the end cavity 103, and push the silk thread component 3 into the body by repeatedly pressing the outer plug 4, which not only reduces the risk in the positioning process, but also effectively locates the lung nodules and improves the success rate of puncture; it allows surgeons to effectively find lung nodules and perform resection surgery when performing thoracoscopy and other operations; the lung nodule puncture positioning needle disclosed in this application has a simple structure, is easy to operate, and is highly practical.

[0044] In a further optimized solution, the cavity diameter of the upper sheath cavity 101 is larger than the cavity diameter of the lower sheath cavity 102 .

[0045] Specifically, such as Figure 2 As shown, in order to facilitate the installation of the elastic part and ensure that the inner core 2 can be located in the upper sheath cavity 101, the cavity diameter of the upper sheath cavity 101 is set to be larger than the cavity diameter of the lower sheath cavity 102, that is, the upper sheath cavity 101 is set as a hollow cavity, and only a through hole is opened in the lower sheath cavity, through which the wire assembly 3 can pass.

[0046] A further optimized solution further includes an end cavity 103, wherein the end cavity 103 and the upper sheath cavity 101 are an integrally formed structure, and the end cavity 103 is a trumpet-shaped structure.

[0047] Further optimizing the solution, the inner core 2 includes:

[0048] An inner core body 201 having a cavity defined therein, wherein the wire assembly 3 is passed through the cavity;

[0049] A mounting seat 202 is fixedly connected to the inner core body 201 , and the diameter of the mounting seat 202 is larger than the cavity diameter of the lower sheath cavity 102 ;

[0050] One end of the elastic member is fixed to the mounting seat 202 , and the elastic member is wrapped around the outer surface of the inner core body 201 .

[0051] Specifically, such as Figure 2-Figure 5 As shown, in order to prevent the inner core 2 from entering the cavity inside the lower sheath cavity 102, the diameter of the mounting seat 202 is set to be larger than the cavity diameter of the lower sheath cavity 102, so that when the inner core 2 moves downward, the spring 6 and the mounting seat 202 will not move into the cavity of the lower sheath cavity 102.

[0052] Further optimizing the solution, the outer plug 4 includes:

[0053] The pressing seat 402 has a trumpet-shaped structure, and the outer diameter of the pressing seat 402 is consistent with the inner diameter of the end cavity 103. When positioned, the pressing seat 402 fits into the end cavity 103;

[0054] The connector 401 is fixedly connected below the pressing seat 402 . During positioning, the bottom of the connector 401 contacts the top of the mounting seat 202 .

[0055] Furthermore, the length of the outer plug 4 is greater than the length of the upper sheath cavity 101 .

[0056] Specifically, such as Figure 7 As shown, in order to ensure that the outer plug 4 can place the wire assembly 3 at the specified position, the length of the connector 401 is the length of the upper sheath cavity 101 plus 1 cm, wherein the pressing seat 402 and the connector 401 are an integrally formed structure, and the connector 401 is a cylindrical structure.

[0057] Further optimizing the solution, the wire assembly 3 includes:

[0058] a wire 301, the wire 301 being located in the cavity;

[0059] The metal wire 302 is fixedly connected to the wire 301 , and the metal wire 302 is located in the lower sheath cavity 102 .

[0060] Specifically, such as Figure 5 As shown, the metal wire 302 is a 6-turn metal spring, and the outer diameter of the metal wire 302 is larger than the diameter of the cavity opened in the inner core 2. In this way, when the inner core 2 moves downward, the metal wire 302 will move downward accordingly. The diameter of the metal wire 302 is the same as the cavity diameter of the lower sheath cavity 102. In this way, when the metal wire 302 moves downward, it moves along the inner wall of the lower sheath cavity 102. By repeatedly pressing the pressing seat 402, the spring 6 is repeatedly compressed, and the inner core 2 moves downward until the metal wire 302 is completely removed from the unsheathed end of the lower sheath cavity 102 and falls to the lung nodule site.

[0061] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0062] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements to the technical solutions of the present invention made by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A pulmonary nodule puncture positioning needle, characterized in that: include: An outer sheath (1), the outer sheath (1) comprising an upper sheath cavity (101) and a lower sheath cavity (102), the upper sheath cavity (101) and the lower sheath cavity (102) being an integrally formed structure; An inner core (2), the inner core (2) being inserted into the outer sheath (1); a wire assembly (3) being inserted into the inner core (2); An elastic member, one end of the elastic member is fixedly connected to the inner core (2), the other end of the elastic member is fixedly connected to the end wall of the lower sheath cavity (102), the end diameter of the inner core (2) is larger than the cavity diameter of the lower sheath cavity (102), and the elastic member is located in the upper sheath cavity (101); When the external plug (4) is being used for puncture positioning, the external plug (4) is moved downward from the upper sheath cavity (101) along a first direction until the thread assembly (3) is placed inside the lung nodule or at the edge of the nodule.

2. The pulmonary nodule puncture positioning needle according to claim 1, characterized in that: The cavity diameter of the upper sheath cavity (101) is greater than the cavity diameter of the lower sheath cavity (102).

3. The pulmonary nodule puncture positioning needle according to claim 1, characterized in that: It also includes an end cavity (103), wherein the end cavity (103) and the upper sheath cavity (101) are an integrally formed structure, and the end cavity (103) is a trumpet-shaped structure.

4. The pulmonary nodule puncture positioning needle according to claim 3, characterized in that: The inner core (2) comprises: An inner core body (201), wherein a cavity is provided in the inner core body (201), and the wire assembly (3) is inserted into the cavity; A mounting seat (202), the inner core body (201) is fixedly connected with the mounting seat (202), and the diameter of the mounting seat (202) is larger than the cavity diameter of the lower sheath cavity (102); One end of the elastic member is fixedly connected to the mounting seat (202), and the elastic member is wound around the outside of the inner core body (201).

5. The pulmonary nodule puncture positioning needle according to claim 4, characterized in that: The outer plug (4) comprises: A pressing seat (402), the pressing seat (402) is a trumpet-shaped structure, and the outer diameter of the pressing seat (402) is consistent with the inner diameter of the end cavity (103), and when positioning, the pressing seat (402) is adapted to be inside the end cavity (103); A connecting body (401), wherein the connecting body (401) is fixedly connected below the pressing seat (402), and when positioned, the bottom of the connecting body (401) contacts the top of the mounting seat (202).

6. The pulmonary nodule puncture positioning needle according to claim 1, characterized in that: The length of the outer plug (4) is greater than the length of the upper sheath cavity (101).

7. The pulmonary nodule puncture positioning needle according to claim 1, characterized in that: The elastic member is a spring (6).

8. The pulmonary nodule puncture positioning needle according to claim 4, characterized in that: The wire assembly (3) comprises: A wire (301), the wire (301) being located in the cavity; The metal wire (302) is fixedly connected to the wire (301), and the metal wire (302) is located in the lower sheath cavity (102) and curls into a ball after being pushed out of the outer sheath (1).

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