Fiber net cutter for non-traumatic fragmentation of internal hard deposits

Abstract

A fiber net cutter for non-traumatic fragmentation of internal hard deposits, the fiber net cutter comprising a fiber net pouch (1) and a free pathological hard deposit (3), wherein the fiber net pouch (1) comprises several first fiber cord loops (101), and several second fiber cord loops (102) are fixedly mounted on the outside of the several first fiber cord loops (101), with the first fiber cord loops (101) and the second fiber cord loops (102) interweaving with each other; and a support (2) is provided on one side of the fiber net pouch (1), with a support inner cavity (4) being provided on the inner side of the support (2), and a moving rod (5) is provided inside the support inner cavity (4). The present invention can be introduced via a minimally invasive access or a natural lumen of the human body and can effectively fragment the internal pathological hard deposit (3), and can also effectively and accurately capture and fragment the internal free pathological hard deposit (3).

Description

A fiber mesh cutter for non-destructive pulverization of hard objects inside the body Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a fiber mesh cutter for non-destructive pulverization of hard objects inside the body. Background Technology

[0002] In the medical field, the presence of pathological masses in the human body (such as kidney stones, gallstones, and cataracts) seriously endangers human health. These masses can lead to organ dysfunction, tissue damage, and abnormal physiological functions, causing immense suffering to patients. Furthermore, some pathological masses often remain in a mobile state. For example, mobile kidney stones can move within the renal pelvis or ureter, causing severe pain and urinary tract obstruction; gallstones can remain mobile within the gallbladder or bile duct, causing complications such as biliary colic and cholangitis. These mobile pathological masses further increase the harm to patients and the difficulty of treatment.

[0003] Currently, commonly used clinical treatments include surgical resection and extracorporeal shock wave lithotripsy (ESWL). While surgical resection can directly remove the hard object, it has significant drawbacks such as large trauma, long recovery time, and high risk of complications. ESWL is a non-invasive technique that uses the energy of external shock waves to break up the pathological hard object, allowing it to be expelled or aspirated from the body. However, this method has limitations regarding the size, location, and hardness of the pathological hard object, and the fragmentation process may damage surrounding tissues. Other physical or chemical methods for dissolving and expelling stones also have limitations, only applicable to specific types of stones or smaller stones. For example, kidney stones are a common disease of the urinary system with a high incidence rate. Patients often suffer from severe pain, hematuria, and other symptoms, which can lead to kidney damage in severe cases. Traditional surgical stone removal methods require incisions inside the patient's body, resulting in large surgical trauma, long postoperative recovery time, and risks of complications such as infection and bleeding. Although ESWL reduces surgical trauma to some extent, its fragmentation effect is poor for larger and harder stones, and repeated treatments may lead to kidney tissue damage. In addition, after treatment with methods such as surgery and extracorporeal shock wave lithotripsy, problems such as pain and urinary tract obstruction may still occur during the expulsion of stone fragments.

[0004] To reduce the difficulty of surgery and minimize the harm of extracorporeal shock wave therapy to the human body, a scalpel-like structure has been developed, mainly consisting of a blade and a net. The blade removes attached tissue or pathological hard objects from the body, and then the net collects them to prevent the excised material from remaining in the body or moving. However, this scalpel-like structure has difficulty capturing free-floating pathological hard objects within the body, and it cannot pulverize them.

[0005] A fiber mesh cutter for non-destructive pulverization of hard objects inside the body is proposed to address the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a fiber mesh cutter for non-destructive pulverization of hard objects in the body, thereby solving the problem mentioned in the background art that it is currently difficult to capture free-state pathological hard objects in the body and to pulverize them.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a fiber mesh cutter for non-destructive pulverization of hard objects in the body, comprising a fiber mesh and free-state pathological hard objects;

[0008] Also includes:

[0009] The fiber net bag includes a plurality of first fiber rope loops, and a plurality of second fiber rope loops are fixedly installed on the outside of the plurality of first fiber rope loops, and the first fiber rope loops and the second fiber rope loops are interlaced.

[0010] The fiber mesh bag has a support frame on one side, and the support frame has an inner cavity on the inner side, and a movable rod is provided inside the inner cavity.

[0011] One end of the movable rod is fixedly equipped with an installation ring, which is made of materials with elastic deformation such as shape memory alloy and elastic polymer, and the installation ring passes through the inner side above several first limiting rope loops.

[0012] Preferably, the plurality of first fiber rope loops and the plurality of second fiber rope loops are all made of organic or inorganic fibers such as high-strength high-modulus polyethylene and titanium wire.

[0013] Preferably, the fiber diameters of the first fiber loop and the second fiber loop are between 1 μm and 100 μm, and the tensile strength of the first fiber loop and the second fiber loop is not less than 100 MPa, and the elastic modulus of the first fiber loop and the second fiber loop is not less than 10 GPa.

[0014] Preferably, the mesh size formed by the alternation of several first fiber rope loops and several second fiber rope loops is 0.02mm-10mm.

[0015] Preferably, mounting brackets are symmetrically installed on one side of the movable rod, and a fixing block is fixedly installed on one side of each of the two mounting brackets. A positioning rod is slidably connected inside the fixing block, and a ramp is provided at one end of the positioning rod.

[0016] Preferably, a telescopic spring is fitted on the outer side of each of the two positioning rods, and one end of the telescopic spring is fixedly connected to the fixing block, and a connecting block is fixedly installed on the other end of the telescopic spring, and the connecting block is fixedly connected to the positioning rod.

[0017] Preferably, both mounting brackets are slidably connected to the inner cavity of the support frame, and the annular bracket can enter the inner cavity of the support frame after installation.

[0018] Compared with existing technologies, the beneficial effects of this invention are: it avoids the problems of large wounds or easy tissue damage caused by traditional surgical resection or extracorporeal shock wave lithotripsy; it can be inserted through a micro-incision (less than 5mm) or natural body cavities to effectively pulverize pathological hard objects in the body, without causing side effects or damage to the human body; at the same time, it can effectively target and precisely capture and pulverize free-floating pathological hard objects in the body, breaking the limitation of traditional scalpel techniques that rely on the location of pathological hard objects in the body. The specific details are as follows:

[0019] 1. When removing free-floating pathological masses from a patient's body, a fiber mesh can be inserted into the body. After locating the free-floating pathological mass, the fiber mesh is injected through a minimally invasive surgical incision or a natural body cavity. A support frame then delivers and opens the fiber mesh. The open support opening facilitates the capture of free-floating pathological masses of any shape. After the fiber mesh captures the free-floating pathological mass, the moving rod is pulled, causing the mounting ring to move. The mounting ring moves into the inner cavity of the support frame, and the deformation of the mounting ring causes the first fiber rope loop to be drawn into the inner cavity of the support frame. The captured free-floating pathological mass is obstructed by the cavity opening. At this time, the continued contraction of the fiber mesh generates a centripetal cutting and crushing force on the free-floating pathological mass. The fibers in the fiber mesh are subjected to centripetal tension from the contraction movement. The first and second fiber rope loops are subjected to force on the free-floating pathological mass, generating enormous pressure on a very small unit area of ​​the fibers. Due to the high elastic modulus of the fibers, the tensile force is ultimately applied entirely to the free-state pathological hard material, rather than being dissipated into the fibers as elastic energy. Simultaneously, the high strength of the fibers ensures that breakage does not occur during the cutting and pulverizing of the free-state pathological hard material, preventing the escape of the material and its inability to be cut and pulverized. Through the control of fiber properties and pore size, it can effectively pulverize any type of pathological hard material in the body, breaking through the limitations of traditional scalpel techniques that rely on the type and size of the pathological hard material. The operation is simple, efficient, and low-cost, reducing the financial burden on patients.

[0020] 2. When the support frame is inserted into the body, the positioning rod abuts against the support frame, keeping the moving rod stationary. When it is necessary to crush free-floating pathological hard objects, the moving rod moves, causing the mounting ring to move, which in turn moves the mounting frame. After the mounting frame moves, the ramp on the positioning rod abuts against the support frame. As the tension increases, it can move the positioning rod. After the positioning rod moves, it slides on the fixed block under the abutment of the support frame, which allows the telescopic spring to be stretched, causing the positioning rod to retract into the inner cavity of the support frame. The two positioning rods can support the moving rod, preventing the mounting ring from being resisted and moving unexpectedly after the whole body is inserted into the body. Attached Figure Description

[0021] Figure 1 is a schematic diagram of the fiber mesh structure of the present invention;

[0022] Figure 2 is a partial structural schematic diagram of the present invention;

[0023] Figure 3 is a schematic diagram of the enlarged structure of region A in Figure 2 of this invention;

[0024] Figure 4 is a schematic diagram of the free-state pathological hard object capture structure of the present invention;

[0025] Figure 5 is a schematic diagram of the cutting and crushing mechanism of the present invention.

[0026] In the diagram: 1. Fiber mesh bag; 101. First fiber rope loop; 102. Second fiber rope loop; 2. Support frame; 3. Free-floating pathological hard object; 4. Inner cavity of the support frame; 5. Moving rod; 501. Mounting frame; 502. Fixing block; 503. Positioning rod; 504. Telescopic spring; 505. Connecting block; 6. Mounting ring. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please refer to Figures 1-5. The present invention provides a technical solution: a fiber mesh cutter for non-destructive pulverization of hard objects in the body, comprising a fiber mesh bag 1 and a free-state pathological hard object 3, and further comprising: the fiber mesh bag 1 includes a plurality of first fiber rope loops 101, and a plurality of second fiber rope loops 102 are fixedly installed on the outside of the plurality of first fiber rope loops 101, and the first fiber rope loops 101 and the second fiber rope loops 102 are interlaced with each other. A support frame 2 is provided on one side of the fiber mesh bag 1, and a support frame cavity 4 is opened on the inner side of the support frame 2. A moving rod 5 is provided inside the support frame cavity 4. An installation ring 6 is fixedly installed at one end of the moving rod 5. The installation ring 6 is made of a material with elastic deformation (such as shape memory alloy, elastic polymer, etc.) and is inserted above the inner side of the plurality of first limiting rope loops 101. It can effectively pulverize any type of pathological hard object in the body, breaking the limitations of traditional technology that depends on the type and size of the pathological hard object in the body. It is simple to operate, highly efficient, and low in cost, and can reduce the financial burden on patients.

[0029] Several first fiber rope loops 101 and several second fiber rope loops 102 are made of high-strength, high-modulus polyethylene, nylon, titanium wire, and other organic and inorganic fibers. This ensures the strength of the fiber net when crushing free-floating pathological hard objects 3. The fiber diameter of the first fiber rope loops 101 and second fiber rope loops 102 is between 1μm and 100μm, and the tensile strength of the first fiber rope loops 101 and second fiber rope loops 102 is not less than 100MPa, and the elastic modulus of the first fiber rope loops 101 and second fiber rope loops 102 is not less than 10GPa, facilitating the crushing of hard objects. The mesh size formed by the interlacing of the first fiber rope loops 101 and second fiber rope loops 102 is 0.02mm-10mm, facilitating the capture of hard objects. The outer surface of the moving rod 5... Mounting brackets 501 are symmetrically installed on both sides, and fixing blocks 502 are fixedly installed on one side of each mounting bracket 501. Positioning rods 503 are slidably connected inside the fixing blocks 502, and one end of the positioning rods 503 is provided with a ramp to support the moving rod 5. A telescopic spring 504 is sleeved on the outer side of each positioning rod 503, and one end of the telescopic spring 504 is fixedly connected to the fixing block 502. A connecting block 505 is fixedly installed on the other end of the telescopic spring 504, and the connecting block 505 is fixedly connected to the positioning rod 503, so that the movement of the moving rod 5 can drive the positioning rod 503 to move. Both mounting brackets 501 are slidably connected to the inner cavity 4 of the support frame, and the mounting ring 6 can enter the inner cavity 4 of the support frame after deformation, which facilitates the entry of the mounting ring 6 into the inner cavity 4 of the support frame after deformation.

[0030] Working principle: Before using this fiber mesh cutter for non-destructive pulverization of hard objects inside the body, it is necessary to check the overall condition of the device to ensure that it can work normally. As shown in Figures 1-5, when removing free-form pathological hard objects 3 from the patient's body, the fiber mesh 1 can be inserted into the body. After determining the location of the free-form pathological hard object 3, the fiber mesh 1 is injected through a minimally invasive surgical incision or a natural body cavity. The support frame 2 delivers and opens the fiber mesh 1. The open support port is conducive to capturing free-form pathological hard objects 3 of any shape. After the fiber net 1 captures the free-state pathological hard object, the moving rod 5 is pulled to move the mounting ring 6. The mounting ring 6 moves into the inner cavity 4 of the support frame. The deformation of the mounting ring 6 causes the first fiber rope ring 101 to be drawn into the inner cavity 4 of the support frame. The captured free-state pathological hard object 3 is blocked by the cavity opening. At this time, the continued contraction of the fiber net 1 generates a centripetal cutting and crushing force on the free-state pathological hard object 3. The fibers in the fiber net 1 are subjected to the centripetal tension of the contraction movement. The first fiber rope ring 101 and the second fiber rope ring 102 are subjected to force on the free-state pathological hard object 3, producing a very small unit area of ​​fiber. Due to the high elastic modulus of the fiber, the immense pressure ensures that the tensile force is ultimately applied entirely to the free-state pathological hard object 3, without being dissipated into the fiber as elastic energy. At the same time, the high strength of the fiber ensures that it will not break during the cutting and crushing of the free-state pathological hard object 3, preventing the escape of the free-state pathological hard object 3 and thus preventing it from being cut and crushed. Through the control of fiber properties and pore size, it can effectively crush any type of pathological hard object in the body, breaking the limitations of traditional technology that relies on the type and size of the pathological hard object in the body. It is simple to operate, highly efficient, and low in cost, which can reduce the financial burden on patients.

[0031] When the support frame 2 is inserted into the body, the positioning rod 503 abuts against the support frame 2, keeping the moving rod 5 stationary. When it is necessary to crush the free-floating pathological hard object 3, the moving rod 5 moves, causing the mounting ring 6 to move, which in turn moves the mounting frame 501. After the mounting frame 501 moves, the ramp on the positioning rod 503 abuts against the support frame 2. As the tension increases, it can drive the positioning rod 503 to move. After the positioning rod 503 moves, it slides on the fixed block 502 under the abutment of the support frame 2, which allows the extension spring 504 to be stretched, causing the positioning rod 503 to retract into the inner cavity 4 of the support frame. The two positioning rods 503 can support the moving rod 5, preventing the mounting ring 6 from being resisted and moving unexpectedly after the whole body is inserted into the body.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fiber mesh cutter for non-destructive pulverization of hard objects in the body, comprising a fiber mesh (1) and a free-state pathological hard object (3); Its features are, Also includes: The fiber net bag (1) includes a plurality of first fiber rope loops (101), and a plurality of second fiber rope loops (102) are fixedly installed on the outside of the plurality of first fiber rope loops (101), and the first fiber rope loops (101) and the second fiber rope loops (102) are interlaced with each other; Among them, a support frame (2) is provided on one side of the fiber net bag (1), and a support frame cavity (4) is opened on the inner side of the support frame (2), and a moving rod (5) is provided inside the support frame cavity (4); One end of the movable rod (5) is fixedly equipped with an installation ring (6), which is made of a material with elastic deformation and is inserted above the inner side of several first limiting rope loops (101).

2. The fiber mesh cutter for non-destructive pulverization of hard objects inside the body according to claim 1, characterized in that: Several first fiber rope loops (101) and several second fiber rope loops (102) are made of organic and inorganic fibers such as high-strength and high-modulus polyethylene, nylon, and titanium wire; the mounting ring (6) is made of materials that can produce elastic deformation, such as shape memory alloy and elastic polymer.

3. A fiber mesh cutter for non-destructive pulverization of hard objects inside the body according to claim 1, characterized in that: The fiber diameter of the first fiber loop (101) and the second fiber loop (102) is between 1 μm and 100 μm, and the tensile strength of the first fiber loop (101) and the second fiber loop (102) is not less than 100 MPa, and the elastic modulus of the first fiber loop (101) and the second fiber loop (102) is not less than 10 GPa.

4. A fiber mesh cutter for non-destructive pulverization of hard objects inside the body according to claim 1, characterized in that: The mesh size formed by the alternation of several first fiber rope loops (101) and several second fiber rope loops (102) is 0.02mm-10mm.

5. A fiber mesh cutter for non-destructive pulverization of hard objects inside the body according to claim 1, characterized in that: The movable rod (5) is symmetrically equipped with mounting brackets (501) on one side of the outside, and a fixing block (502) is fixedly installed on one side of each of the two mounting brackets (501). A positioning rod (503) is slidably connected inside the fixing block (502), and a ramp is provided at one end of the positioning rod (503).

6. A fiber mesh cutter for non-destructive pulverization of hard objects inside the body according to claim 5, characterized in that: Each of the two positioning rods (503) is fitted with a telescopic spring (504) on its outer side. One end of the telescopic spring (504) is fixedly connected to the fixing block (502), and the other end of the telescopic spring (504) is fixedly installed with a connecting block (505). The connecting block (505) is fixedly connected to the positioning rod (503).

7. A fiber mesh cutter for non-destructive pulverization of hard objects inside the body according to claim 5, characterized in that: Both mounting brackets (501) are slidably connected to the inner cavity (4) of the support frame, and the mounting ring (6) can enter the inner cavity (4) of the support frame after deformation.

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