Minimally invasive puncture anchoring assembly and pulmonary nodule puncture positioning system

Abstract

The invention provides a minimally invasive puncture anchoring assembly and a pulmonary nodule puncture positioning system.The minimally invasive puncture anchoring assembly comprises a body part and a tail line fixedly connected to the tail end of the body part, and the tail line is used for body surface marking and positioning; the body part comprises a positioning body and an anchoring body, and the positioning body is of a strip-shaped structure made of a metal material and is used for being placed near a pulmonary nodule through CT guidance in the pulmonary nodule minimally invasive surgery so as to develop under CT scanning and indicate the relative position of the pulmonary nodule in the lung; the anchoring body is made of a polyurethane-polycaprolactone polymer composite material, so that the anchoring body has good biocompatibility and absorbability; the anchoring body is coaxially and fixedly arranged on the positioning body and is of a spindle-shaped structure in a free state. The anchoring body is arranged by virtue of polyurethane-polycaprolactone sponge, so that the anchoring body has the integrated characteristics of firm adhesion, rapid hemostasis, controllable degradation and the like, and is used for assisting an operator in stably anchoring and accurately positioning pulmonary nodules in a minimally invasive surgery, and the operation safety is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of interventional medical devices, and particularly to a minimally invasive puncture anchoring assembly and a pulmonary nodule puncture positioning system. Background Art

[0002] As is well known, lung cancer is one of the cancers with the highest mortality rates globally. In recent years, with the widespread application of low-dose CT screening, the number of early-detected small pulmonary nodules has increased significantly. Precise positioning and resection of these nodules are of great clinical significance for the prevention and treatment of early lung cancer.

[0003] Currently, clinically, the positioning of pulmonary nodule lesions mainly relies on techniques such as hook wire positioning, microcoil positioning, and dye injection under CT guidance. However, although hook wire positioning improves the positioning accuracy, there is a risk of unhooking and it is very likely to cause complications such as pneumothorax and bleeding; for microcoil positioning, since the microcoil is placed under CT guidance and intraoperative fluorescence imaging is used for positioning, although it has good stability, there are also risks of minor bleeding and pneumothorax; positioning methods such as dye injection using ultrasound and near-infrared imaging technology have certain advantages in reducing radiation exposure compared to traditional techniques, but they are prone to affect the positioning effect due to dye diffusion and fading in the lung parenchyma. Therefore, the research and development of a pulmonary nodule positioning device that can stably anchor, accurately position, and be safer will have a profound impact on the development of the medical cause. Summary of the Invention

[0004] The purpose of the present invention is to provide a minimally invasive puncture anchoring assembly and a pulmonary nodule puncture positioning system for stably anchoring and accurately positioning pulmonary nodules during minimally invasive pulmonary nodule surgery, and improving the safety of pulmonary nodule resection surgery.

[0005] The technical solution provided by the present invention is as follows:

[0006] On the one hand, the present invention provides a minimally invasive puncture anchoring assembly, including:

[0007] A body portion, including a positioning body and an anchoring body;

[0008] The positioning body is a metal positioning body and has a strip-shaped structure, which is used to be placed near the pulmonary nodule under CT guidance during minimally invasive pulmonary nodule surgery to be visible under CT scanning and indicate the relative position of the pulmonary nodule in the lung;

[0009] The anchoring body has a spindle-shaped structure in its free state, and the anchoring body is coaxially fixed on the positioning body; the anchoring body has good biocompatibility and absorbability;

[0010] A tail wire, fixedly connected to the tail end of the positioning body, for marking and positioning on the body surface.

[0011] With a minimally invasive puncture anchoring component provided by the present invention, clinically, under CT guidance, the minimally invasive puncture anchoring component is implanted into the lung tissue through a puncture needle. The metal positioning body is visible under CT scan to ensure its accurate implantation near the lung nodule. After that, the anchoring body disengages from the puncture needle and rapidly expands to form a spindle-shaped structure, achieving accurate anchoring of the lung nodule. Since the anchoring body is in a spindle-shaped structure in its free state, after it disengages from the puncture needle, it mechanically embeds into the lung tissue and firmly adheres to the lung tissue relatively. At the same time, it compresses the bleeding point to achieve physical plugging of the puncture point, effectively reducing the risk of displacement of the anchoring body relative to the lung tissue after expansion, enhancing the stability and accuracy of positioning the lung nodule, achieving the effect of rapid hemostasis during the operation, and reducing the probability of complications such as pneumothorax after positioning. At the same time, since the anchoring body has good biocompatibility and can be absorbed by the body, it effectively reduces the probability of damage to the patient's body during lung nodule resection surgery and the secondary damage to the body caused by the accidental termination of the operation with the minimally invasive puncture anchoring component remaining in the patient's body, effectively enhancing the safety of lung nodule resection surgery.

[0012] In some embodiments, the anchoring body is provided as a hemostatic sponge, and the hemostatic sponge is spirally wound around the outer surface of the positioning body around the axis of the positioning body.

[0013] With a minimally invasive puncture anchoring component provided by the present invention, the hemostatic sponge is soft in texture and has good elasticity and plasticity. Setting the hemostatic sponge as the anchoring body helps to reduce the probability of the minimally invasive puncture anchoring component remaining in the patient's body and causing secondary damage to the body when the operation is accidentally terminated, effectively ensuring the safety of lung nodule resection surgery. At the same time, the hemostatic sponge has a three-dimensional porous network structure in its dry state, can be compressed, has good resilience and strong supportability after removing the pressure, has good comprehensive performance after being made into the anchoring body, and makes the structure of the anchoring body simple, convenient for production and use, and low in cost, which is beneficial for enterprises and / or relevant departments to reduce costs and increase efficiency.

[0014] In some embodiments, the hemostatic sponge is provided as a polyurethane-polycaprolactone hemostatic sponge.

[0015] With a minimally invasive puncture anchoring component provided by the present invention, a block copolymer formed by chemical crosslinking of polyurethane and polycaprolactone is used to make the hemostatic sponge, and the hemostatic sponge is used to make the anchoring body. On the one hand, since polycaprolactone is inserted into the polyurethane main chain and the proportion of polycaprolactone is adjusted, the hemostatic sponge can achieve delayed degradation to maintain the long-term stable support of the anchoring body in the body, so that the minimally invasive puncture anchoring component can be temporarily stored in the patient's body when the operation is accidentally terminated, and then the corresponding operation can be carried out later. Even if it is determined that the operation is terminated, since the anchoring body can be slowly absorbed by the patient's body, there is no need to specifically operate to remove the anchoring body from the patient's body, further enhancing the safety of the corresponding operation.

[0016] Moreover, after the anchor body made of the hemostatic sponge contacts blood, its high porosity and hydrophilic-hydrophobic balance design enable it to quickly absorb blood, electrostatically adsorb platelets, and activate coagulation factors through contact, thereby achieving a rapid hemostasis effect. This makes the anchor body have the characteristics of firm adhesion, rapid hemostasis, and controllable degradation, with good comprehensive performance and strong practicability.

[0017] In addition, the anchor body material is easy to prepare and convenient to produce, which helps to further reduce the cost investment of enterprises and / or relevant departments in the production and use of this minimally invasive puncture anchor assembly.

[0018] In some embodiments, the positioning body is provided as a medical titanium alloy positioning body.

[0019] Through a minimally invasive puncture anchor assembly provided by the present invention, setting the positioning body to be made of titanium alloy with good biocompatibility helps to reduce the inflammatory reaction during and after the operation, reduce the surgical pain and risk of patients, and shorten the hospitalization time of patients. Moreover, in the case of an accidental termination of the operation, this minimally invasive puncture anchor assembly can remain in the patient's body for a long time without causing an immune rejection reaction, which helps to stably ensure the use safety of this minimally invasive puncture anchor assembly.

[0020] In some embodiments, the positioning body includes a head end, a middle section, and a tail end. The head end, the middle section, and the tail end are coaxially arranged and fixedly connected in sequence;

[0021] The radial dimension of the middle section is smaller than the radial dimensions of the head end and the tail end, so that the positioning body as a whole has a dumbbell-shaped structure;

[0022] The anchor body is fixedly arranged on the middle section.

[0023] Through a minimally invasive puncture anchor assembly provided by the present invention, setting the positioning body to have a dumbbell-shaped structure and arranging the anchor body in the middle section of the positioning body helps to improve the overall structural stability of the body, and thus ensure the stable and reliable function of this minimally invasive puncture anchor assembly, which helps the smooth progress of the pulmonary nodule resection surgery and improves the surgical success rate. At the same time, the positioning body has a simple structure, is convenient for production and assembly, and further promotes energy conservation and cost reduction for enterprises and / or relevant departments.

[0024] In some embodiments, the head end is round.

[0025] Through a minimally invasive puncture anchor assembly provided by the present invention, setting the head end of the positioning body to be round helps to reduce the probability of this minimally invasive puncture anchor assembly damaging surrounding tissues during the pulmonary nodule resection surgery, and further improves the use safety of this minimally invasive puncture anchor assembly.

[0026] In some embodiments, an installation groove is coaxially opened on the tail end;

[0027] The tail wire is inserted into the installation groove and is glued and fixed relative to the inner wall of the installation groove.

[0028] A minimally invasive puncture anchoring assembly provided by the present invention has an installation groove on the tail end to connect the tail line. The connection method of the tail line to the body is simple, which helps to significantly reduce the production difficulty and corresponding production and use costs of the minimally invasive puncture anchoring assembly, and is conducive to energy saving and cost reduction.

[0029] In some embodiments, the tail wire is configured as a polyglycolic acid tail wire.

[0030] The minimally invasive puncture anchoring component provided by the present invention has a polyglycolic acid material with good biocompatibility and absorbability. The antibacterial and anti-inflammatory compounds produced by its decomposition metabolism help promote wound healing and ensure that the wound is smooth and soft. The tail line is made of polyglycolic acid material, which helps to stably ensure the safety of the minimally invasive puncture anchoring component and minimize the damage to the body caused by lung nodule resection surgery.

[0031] On the other hand, the present application also provides a pulmonary nodule puncture positioning system, comprising any of the above-mentioned minimally invasive puncture anchoring components, and further comprising:

[0032] Puncture needle assembly and push needle assembly;

[0033] The puncture needle assembly includes a puncture needle, and the push needle assembly includes a push needle;

[0034] The body is placed inside the front end of the puncture needle, and the push needle is placed inside the puncture needle and behind the body to push the body out of the puncture needle; the push needle is sealed and slidably matched with the inner wall of the puncture needle;

[0035] The anchor body is compressed inside the puncture needle to form a spiral structure, and the anchor body returns to an expanded spindle-shaped structure after being pushed out of the puncture needle;

[0036] The end of the tail line facing away from the body passes through the end of the pushing needle facing away from its pushing end, and is used for body surface marking and positioning.

[0037] In some embodiments, the puncture needle assembly further comprises a first tail portion, which is in a funnel-shaped structure and is disposed at an end of the puncture needle away from its needle tip, and is used to compress the anchor body and push it into the puncture needle;

[0038] The pushing needle assembly also includes a second tail portion, which is arranged at an end of the pushing needle away from its pushing end and is located on a side of the first tail portion away from the needle tip of the puncture needle; the second tail portion is adapted to the first tail portion to form a funnel-shaped structure, and abuts against the first tail portion after the anchor body is released from the puncture needle.

[0039] In some embodiments, the outer wall of the puncture needle is evenly provided with scale lines along its axis;

[0040] A positioning line is provided at one end of the pushing needle close to the second tail portion, and the positioning line is used to indicate that the anchoring body is just at the opening of the puncture needle tip and is not released.

[0041] According to the lung nodule puncture positioning system provided by the present invention, in the initial state, the tail line is inserted into the push needle, and the end thereof away from the body is inserted out from the push needle. Clinically, when using the above-mentioned minimally invasive puncture anchor assembly to perform minimally invasive surgery on lung nodules, the operator tightens the tail line until the tail end of the positioning body is stably fitted with the pushing end of the pushing needle, and then uses the pushing needle to compress the anchor body of the above-mentioned minimally invasive puncture anchor assembly from the opening end of the first tail and send it into the puncture needle, and keep the body located at the inner side of the front end of the puncture needle; thereafter, under the guidance of CT, the operator punctures the puncture needle through the chest wall into the lung tissue near the lung nodule, and the positioning body is developed under CT, indicating the position of the minimally invasive puncture anchor assembly in the lung tissue; when the positioning line moves to the first tail of the puncture needle, it indicates that the anchor body is just located at the opening of the puncture needle tip and has not been released, and continues to be pushed to the second tail to abut the first tail, indicating that the anchor body is completely released from the puncture needle tip, and the anchor body expands and stably anchors at the corresponding position in the lung tissue. Afterwards, slowly withdraw the puncture needle and the push needle, leaving the tail wire outside the body to mark the location of the lung nodule, and then proceed with subsequent surgical operations.

[0042] On the one hand, the funnel-shaped first tail is used to compress the anchor body, which effectively improves the ease of assembly of the lung nodule puncture positioning system; a positioning line and a funnel-shaped second tail are set to be used in conjunction with the first tail, and combined with scale lines to indicate the position of the anchor body relative to the puncture needle and the depth of the puncture needle relative to the body. This effectively reduces the operational difficulty of lung nodule resection surgery, improves the success rate of the surgery, and shortens the operation time, thereby significantly reducing the patient's surgical pain and risks, and ensuring the comprehensive performance of the lung nodule puncture positioning system.

[0043] Compared with the prior art, the minimally invasive puncture anchoring assembly and pulmonary nodule puncture positioning system provided by the present invention have at least one of the following beneficial effects:

[0044] 1. Since the anchoring body is spindle-shaped in its free state, it can be quickly fixed at the corresponding position in the lung tissue after being withdrawn from the self-piercing needle, reducing the risk of displacement relative to the lung tissue after inflation, achieving precise and stable positioning of the lung nodule, physically blocking the puncture point to achieve hemostasis during the operation, and effectively reducing the risk of complications such as pneumothorax in patients after the operation. In addition, due to the good biocompatibility and absorbability of the anchoring body, the minimally invasive puncture anchoring component can be retained in the patient's body for a long time without causing secondary damage to the body, and there is no need to specifically operate to remove it from the patient's body after determining the termination of the operation. It can be slowly degraded in the body, thus significantly reducing the damage of minimally invasive lung nodule surgery to the patient's body and improving the operational safety of lung nodule resection surgery.

[0045] 2. In the present invention, the positioning body is made of medical titanium alloy, and the head end of the positioning body is set to be round to reduce the probability of inflammatory reactions during and after the operation and the damage of surgical instruments to the patient's body during the operation. The polyurethane-polycaprolactone hemostatic sponge is used to wrap the positioning body to form the anchoring body, ensuring the support stability and safety of the anchoring body relative to the lung tissue, achieving the effect of hemostasis during the operation and reducing postoperative complications. At the same time, the tail line is made of polyglycolic acid material to further reduce the inflammatory reaction and promote wound healing. In this way, the minimally invasive puncture anchoring component can not only achieve precise positioning under complex lung nodule positions, with high stability and strong operational safety, but also help significantly reduce the surgical pain and risk of patients, shorten the hospital stay, and conform to the principle of "people-oriented".

[0046] 3. In the present invention, by setting the positioning body to be dumbbell-shaped, the hemostatic sponge is wrapped around the middle section of the positioning body to form the anchoring body, and at the same time, an installation groove is provided at the tail end of the positioning body to connect the tail line. The overall structure of the minimally invasive puncture anchoring component is simple, convenient for production and use, and has low cost, which is beneficial for enterprises and / or relevant departments to reduce costs and increase efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The following will further illustrate the above-mentioned characteristics, technical features, advantages and their implementation manners of the solution in a clear and easy-to-understand manner in combination with the drawings in the preferred embodiments.

[0048] Figure 1 is an axonometric schematic diagram mainly showing the overall structure of the minimally invasive puncture anchoring component in an embodiment of the present invention;

[0049] Figure 2 is an axonometric schematic diagram mainly showing the overall structure of the positioning body in an embodiment of the present invention;

[0050] Figure 3 is an axonometric schematic diagram mainly showing the anchoring body in its free state in an embodiment of the present invention;

[0051] Figure 4It is an axonometric schematic diagram mainly showing the overall structure of the push needle assembly in the embodiment of the present invention;

[0052] Figure 5 It is an axonometric schematic diagram mainly showing the overall structure of the puncture needle assembly in the embodiment of the present invention;

[0053] Figure 6 It is an axonometric schematic diagram mainly showing the overall structure of the pulmonary nodule puncture positioning system after the anchoring body is released from the puncture needle in the embodiment of the present invention.

[0054] Explanation of reference numerals:

[0055] 1. Body; 11. Positioning body; 111. Head end; 112. Middle section; 113. Tail end; 1131. Installation groove; 12. Anchoring body; 2. Tail line;

[0056] 100. Puncture needle; 200. First tail; 300. Push needle; 310. Positioning line; 400. Second tail. Detailed implementation manners

[0057] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation manners of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings, and other implementation manners can be obtained.

[0058] To make the drawings concise, only the parts related to the present invention are schematically shown in each drawing, and they do not represent their actual structures as products. In addition, to make the drawings concise and easy to understand, in some drawings, components with the same structure or function are only schematically shown for one of them, or only one of them is marked. In this article, "one" not only means "only this one", but also means "more than one" situation.

[0059] Lung cancer is one of the cancers with the highest lethality rate globally. With the wide application of low-dose CT screening, the number of early-detected pulmonary nodules has increased significantly. Therefore, its accurate positioning and early resection are extremely important. Clinically, since pulmonary nodules are usually small in size and mostly located in the deep lung parenchyma, it is difficult to locate them by touch or vision during traditional video-assisted thoracoscopic surgery (VATS), resulting in greater surgical difficulty and an increased likelihood of thoracotomy due to inaccurate positioning. This not only prolongs the patient's hospital stay but also significantly increases the patient's surgical pain and risk.

[0060] In order to solve the challenge of intraoperative positioning, in recent years, technologies such as hook needle positioning, micro-coil positioning and dye injection under CT guidance have emerged one after another. Although hook needle positioning improves positioning accuracy, there is a risk of unhooking and it is likely to cause complications such as pneumothorax and bleeding; micro-coil positioning is inserted under CT guidance and uses intraoperative fluorescent imaging for positioning. Although it has good stability, it also has the risk of a small amount of bleeding and pneumothorax; compared with traditional technologies, dye injection uses ultrasound and near-infrared imaging technology to reduce radiation exposure. However, it is easy to affect the positioning effect due to dye diffusion and fading in the lung parenchyma, and there is room for improvement.

[0061] In this regard, refer to the accompanying drawings of the specification Figures 1 to 6 In one embodiment, a minimally invasive puncture anchoring assembly is provided to assist doctors in achieving stable anchoring and precise positioning of pulmonary nodules in complex pulmonary nodule locations during minimally invasive surgery, and to ensure operational safety. Figure 1 It includes a body 1 and a tail line 2 connected to the rear end of the body 1, wherein the body 1 includes a positioning body 11 and an anchoring body 12; wherein the positioning body 11 is made of metal material and has a strip-shaped structure; the anchoring body 12 has good biocompatibility and absorbability, is coaxially fixed on the positioning body 11, and has a spindle-shaped structure in a free state, so as to be stably anchored relative to the lung tissue when used; the tail line 2 is used for surface marking positioning.

[0062] Clinically, under the guidance of CT, the minimally invasive puncture anchoring assembly is implanted into the lung tissue through the puncture needle 100, and the positioning body 11 is visualized under the CT scan to ensure that the minimally invasive puncture anchoring assembly is accurately implanted near the lung nodule. Afterwards, the anchoring body 12 is disengaged from the puncture needle 100 and rapidly expands to form a spindle-shaped structure, which is embedded and fixed in the lung tissue to achieve anchoring relative to the lung nodule. Since the anchor body 12 is spindle-shaped after being released from the puncture needle 100, it can be quickly embedded in the lung tissue and fixed relative to the lung tissue after being released from the puncture needle 100, effectively reducing the probability of its relative displacement of the lung nodule; at the same time, after being embedded in the corresponding lung tissue, it physically blocks the puncture point and realizes mechanical compression of the bleeding point, which helps to minimize the risk of intraoperative bleeding and postoperative complications such as pneumothorax; at the same time, since the anchor body 12 has good biocompatibility and can be absorbed by the body, when the operation is accidentally terminated, the minimally invasive puncture anchor component can be temporarily stored in the patient's body, and then the corresponding operation can be performed. Even if the operation is finally terminated, since the anchor body can be slowly degraded in the body, there is no need for special surgery to remove it from the patient's body, which effectively reduces the damage to the patient's body caused by minimally invasive surgery for lung nodules and ensures the safety of lung nodule resection surgery.

[0063] In one embodiment, based on the above embodiment, specifically, referring to Figure 1 and Figure 2, in this embodiment of the present invention, the positioning body 11 includes a head end 111, a middle section 112 and a tail end 113, all of which are cylindrical structures, arranged coaxially, fixedly connected in sequence, and the radial dimension of the middle section 112 is smaller than that of the head end 111 and the tail end 113 at the same time, so that the positioning body 11 as a whole has a dumbbell-shaped structure; the anchoring body 12 is fixedly arranged on the middle section 112 to improve the structural stability of the body portion 1. To meet the needs of minimally invasive surgery for pulmonary nodules, in this embodiment, it is preferably set that the radial dimensions of the head end 111 and the tail end 113 are both 1 mm, and the radial dimension of the middle section 112 is set to 0.5 mm.

[0064] In the implementation manner of this embodiment, it is preferably set that the head end 111, the middle section 112 and the tail end 113 are integrally formed to ensure the structural strength and production convenience of the positioning body 11. Of course, the forming method and forming structure of the positioning body 11 are not limited to this, and it should not be used as a specific limitation to the protection scope of the present invention.

[0065] In this embodiment, it is preferably set that the anchoring body 12 is fixedly arranged on the positioning body 11 by an adhesive method.

[0066] In this embodiment, an installation groove 1131 is coaxially opened at the position of the tail end 113 away from the head end 111; the tail wire 2 is coaxially inserted into the installation groove 1131 and adhesively fixed relative to the inner wall of the installation groove 1131.

[0067] Of course, in the implementation manner of this embodiment, the installation methods of the anchoring body 12 and the tail wire 2 relative to the positioning body 11 are not limited to this, and any form that can realize the fixed connection of the anchoring body 12 and the tail wire 2 relative to the positioning body 11 should be included in the protection scope of the present invention.

[0068] In addition, to reduce the probability of the positioning body 11 damaging the surrounding tissues during pulmonary nodule resection surgery, in this embodiment, further, the head end 111 is set to be round.

[0069] Further, in the implementation manner of this embodiment, it is preferably set that the positioning body 11 is made of a material with good biocompatibility. In this embodiment, it is preferably set that the positioning body 11 is made of titanium alloy to reduce the inflammatory reaction during and after the surgery. Of course, in other implementation manners of the present invention, other materials can also be used to make the positioning body 11, and the manufacturing material of the positioning body 11 should not be used as a specific limitation to the protection scope of the present invention.

[0070] It should be noted that according to the application scenario of this minimally invasive puncture anchoring component, after the anchoring body 12 is arranged on the positioning body 11, it is necessary to ensure that it can be compressed inside the puncture needle 100 and quickly resume its spindle-shaped structure after being pushed out of the puncture needle 100. In this embodiment, preferably, the anchoring body 12 is set as a hemostatic sponge, which is spirally wound around the axis of the positioning body 11 and adhesively fixed on the outer surface of the middle section 112 to form a spindle-shaped structure. The hemostatic sponge has a three-dimensional porous network structure in the dry state, can be compressed, has good resilience and strong supporting ability after the pressure is removed, and has good comprehensive performance and low cost after being made into the anchoring body 12.

[0071] Furthermore, in this embodiment, with reference to Figure 3 , preferably, the hemostatic sponge is set as a polyurethane-polycaprolactone hemostatic sponge. By inserting polycaprolactone into the main chain of polyurethane and adjusting the proportion of polycaprolactone, the hemostatic sponge can achieve delayed degradation, so as to maintain the long-term stable support of the anchoring body 12 in the body, thereby reducing the urgency of the corresponding pulmonary nodule resection surgery, enabling the anchoring body 12 to be temporarily stored in the patient's body or slowly absorbed by the patient's body after determining to terminate the surgery. Moreover, after the anchoring body 12 contacts the blood, its high porosity and hydrophilic-hydrophobic balance design enable it to quickly absorb blood. At the same time, by electrostatically adsorbing platelets and activating coagulation factors through contact, it can also achieve a rapid hemostasis effect, so that the anchoring body 12 has the characteristics of firm adhesion, rapid hemostasis, and controllable degradation integration, significantly improving its comprehensive performance and strong practicability.

[0072] For the tail line 2, in this embodiment, preferably, it is set as a polyglycolic acid tail line 2 to ensure that the whole minimally invasive puncture anchoring component has good biocompatibility.

[0073] By selecting materials with good tissue compatibility and / or absorbability to make the minimally invasive puncture anchoring component, the present invention enables the minimally invasive puncture anchoring component to be retained in the body for a long time in case of accidental termination of the surgery, without immune rejection reaction, effectively improving the safety of minimally invasive pulmonary nodule surgery and the surgical success rate.

[0074] It should be noted that the minimally invasive puncture anchoring component of the present invention is not limited to the resection treatment of pulmonary nodules, but can also be used in the positioning of breast microtumors, liver tumors, and surgical positioning of urinary system lesions in minimally invasive interventional surgeries. The application scope of the embodiments of the present application is not specifically limited. This embodiment only takes its precise positioning and anchoring in minimally invasive pulmonary nodule surgery as an example to elaborate on the technical principle.

[0075] Next, with reference to Figures 1 to 6In one embodiment, a pulmonary nodule puncture positioning system is provided, comprising the minimally invasive puncture anchoring assembly described in any of the above embodiments, with reference to Figure 4 and Figure 5 , further comprising: a puncture needle assembly and a push needle assembly; specifically, the puncture needle assembly comprises a puncture needle 100 and a first tail portion 200, and the push needle assembly comprises a push needle 300 and a second tail portion 400; refer to Figure 4 and Figure 5 , where reference Figure 6 The outer wall of the puncture needle 100 is evenly provided with scale lines along its axis. The first tail portion 200 is provided at the end of the puncture needle 100 away from its needle tip and has a funnel-shaped structure, which is used to compress the anchor body 12 and push it into the puncture needle 100; the second tail portion 400 is provided at the end of the pushing needle 300 away from its pushing end, and is adapted to the funnel-shaped structure of the first tail portion 200. The second tail portion 400 is located at the end of the first tail portion 200 away from the needle tip of the puncture needle 100, and abuts against the first tail portion 200 after the anchor body 12 is released from the puncture needle 100; and the pushing needle 300 is also provided with a positioning line 310, which is located at the end of the puncture needle 100 close to the second tail portion 400, which is used to indicate that the anchor body 12 is just at the opening of the needle tip of the puncture needle 100 and has not been released.

[0076] During assembly, the tail line 2 is inserted into the pushing needle 300, and its end away from the body 1 is passed out from the second tail 400 end of the pushing needle 300; in clinical application, the operator tightens the tail line 2 until the tail end 113 of the positioning body 11 is in contact with the pushing end of the pushing needle 300 to ensure that the pushing needle 300 can stably push the body 1 out of the puncture needle 100; then the above-mentioned minimally invasive puncture anchoring assembly and the pushing needle 300 are placed together on the inner side of the puncture needle 100 from one end of the first tail 200, and the anchoring body 12 is compressed by the first tail 200 and presents a spiral structure in the puncture needle 100, continuously pushing the pushing needle 300 and the positioning body 11 until the positioning line 310 is flush with the end of the first tail 200 of the puncture needle 100, keeping the body 1 placed on the inner side of the front end of the puncture needle 100, that is, making the anchoring body 12 just located at the needle tip opening of the puncture needle 100 and not released. Afterwards, under the guidance of CT, the surgeon punctures the puncture needle 100 through the chest wall into the lung tissue near the lung nodule, observes the scale line on the outer wall of the puncture needle 100, ensures that the position of the puncture needle 100 meets the surgical requirements, and after satisfactory positioning, pushes the push needle 300 to seal and slide relative to the inner wall of the puncture needle 100, and uses the push needle 300 to push the body 1 into the lung tissue. After the anchor body 12 is removed from the puncture needle 100, it returns to an expanded spindle-shaped structure and fits with the surrounding tissue to achieve fixation. After the above-mentioned minimally invasive puncture anchor assembly is fully implanted, slowly withdraw the puncture needle 100 and the push needle 300, and expose the tail line 2 to the outside of the body to mark the position of the nodule for subsequent surgical operations.

[0077] The implementation principle of this embodiment is as follows: clinically, after the above-mentioned minimally invasive puncture anchoring assembly is assembled, when it is used for lung nodule removal surgery, first, under the guidance of CT, the surgeon punctures the puncture needle 100 through the chest wall into the lung tissue near the lung nodule, observes the scale line on the outer wall of the puncture needle 100, ensures that the position of the puncture needle 100 meets the surgical requirements, observes the position of the positioning line 310 relative to the first tail 200, ensures that the minimally invasive puncture anchoring assembly remains near the opening of the puncture needle 100 and is in an unreleased state, so as to ensure that it accurately locates the lung nodule after entering the lung tissue; after the positioning is satisfactory, the surgeon uses the push needle 300 to push the body 1 into the lung tissue, and the anchor body 12 expands and embeds into the lung tissue after it is removed from the puncture needle 100, so as to achieve accurate and stable anchoring. After the above-mentioned minimally invasive puncture anchoring assembly is completely implanted, slowly withdraw the puncture needle 100 and the push needle 300, and keep the tail line 2 exposed to the outside of the body to mark the position of the nodule, and then the subsequent surgical operation can be carried out.

[0078] The lung nodule puncture positioning system has a simple structure and convenient operation, which helps to reduce the operation difficulty of lung nodule resection surgery, shorten the operation time, and improve the operation success rate. At the same time, due to the characteristics of the anchoring body such as firmly adhering to the lung tissue, quickly achieving hemostasis and controllable degradation, while ensuring the accurate positioning and stable anchoring of the lung nodule, it effectively reduces the risks of complications such as bleeding during the lung nodule resection surgery and pneumothorax after the surgery; moreover, since the minimally invasive puncture anchoring component is made of materials with good biocompatibility as a whole, even if the operation is aborted accidentally, the minimally invasive puncture anchoring component will not cause secondary damage to the body because it can remain in the body for a long time and will not produce immune rejection reactions, thus stably ensuring the safety of the minimally invasive lung nodule surgery.

[0079] It should be noted that the above-mentioned embodiments can be freely combined as needed. The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A minimally invasive puncture and anchoring assembly, characterized in that, include: The body part includes a positioning body and an anchoring body; The positioning body is a metal positioning body with a strip-shaped structure, and is used to be placed near the lung nodule under CT guidance during minimally invasive surgery on lung nodules, so as to be visualized under CT scanning and indicate the relative position of the lung nodule in the lung; The anchoring body is in a spindle-shaped structure in a free state, and the anchoring body is coaxially fixed on the positioning body; the anchoring body has good biocompatibility and absorbability; The tail line is fixedly connected to the tail end of the positioning body and is used for body surface marking and positioning.

2. A minimally invasive puncture anchoring assembly according to claim 1, characterized in that: The anchoring body is configured as a hemostatic sponge, and the hemostatic sponge is spirally wound around the axis of the positioning body and on the outer surface of the positioning body; The hemostatic sponge is configured as a polyurethane-polycaprolactone hemostatic sponge.

3. A minimally invasive puncture anchoring assembly according to claim 1 or 2, characterized in that: The positioning body is configured as a medical titanium alloy positioning body.

4. A minimally invasive puncture anchoring assembly according to claim 1, characterized in that: The positioning body comprises a head end, a middle section and a tail end, wherein the head end, the middle section and the tail end are coaxially arranged and fixedly connected in sequence; The radial dimension of the middle section is smaller than the radial dimensions of the head end and the tail end, so that the positioning body has a dumbbell-shaped structure as a whole; The anchoring body is fixedly arranged on the middle section.

5. A minimally invasive puncture anchoring assembly according to claim 4, characterized in that: The head end is rounded.

6. The minimally invasive puncture anchoring assembly according to claim 1, characterized in that: A mounting groove is coaxially provided on the tail end; The tail wire is inserted into the installation groove and is glued and fixed relative to the inner wall of the installation groove.

7. The minimally invasive puncture anchoring assembly according to claim 1, characterized in that: The tail line is configured as a polyglycolic acid tail line.

8. A lung nodule puncture positioning system, characterized in that, The minimally invasive puncture anchoring assembly comprises any one of claims 1 to 7, further comprising: Puncture needle assembly and push needle assembly; The puncture needle assembly includes a puncture needle, and the push needle assembly includes a push needle; The body is placed inside the front end of the puncture needle, and the push needle is placed inside the puncture needle and behind the body to push the body out of the puncture needle; the push needle is sealed and slidably matched with the inner wall of the puncture needle; The anchor body is compressed inside the puncture needle to form a spiral structure, and the anchor body returns to an expanded spindle-shaped structure after being pushed out of the puncture needle; The end of the tail line facing away from the body passes through the end of the pushing needle facing away from its pushing end, and is used for body surface marking and positioning.

9. A pulmonary nodule puncture positioning system according to claim 8, characterized in that: The puncture needle assembly further includes a first tail portion, which is in a funnel-shaped structure and is disposed at an end of the puncture needle away from the needle tip thereof, and is used to compress the anchor body and push it into the puncture needle; The pushing needle assembly also includes a second tail portion, which is arranged at an end of the pushing needle away from its pushing end and is located on a side of the first tail portion away from the needle tip of the puncture needle; the second tail portion is adapted to the first tail portion to form a funnel-shaped structure, and abuts against the first tail portion after the anchor body is released from the puncture needle.

10. A pulmonary nodule puncture positioning system according to claim 9, characterized in that: The outer wall of the puncture needle is evenly provided with scale lines along its axis; A positioning line is provided at one end of the pushing needle close to the second tail portion, and the positioning line is used to indicate that the anchoring body is just at the opening of the puncture needle tip and is not released.

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