Fiber net-shaped cutter for crushing hard objects in body without damage

Abstract

The invention discloses a fiber net-shaped cutter for non-destructive crushing of in-vivo hard objects, which comprises a fiber net bag and free pathological hard objects, and is characterized in that the fiber net bag comprises a plurality of first fiber rope rings, and a plurality of second fiber rope rings are fixedly mounted outside the plurality of first fiber rope rings; the first fiber rope rings and the second fiber rope rings are mutually staggered, a supporting frame is arranged on one side of the fiber net bag, a supporting frame inner cavity is formed in the inner side of the supporting frame, and a moving rod is arranged in the supporting frame inner cavity; the problems that a wound is large or tissue is prone to being damaged due to traditional surgical resection or extracorporeal shock wave lithotripsy and the like are solved, pathological hard objects in a human body can be led into and effectively crushed under a minimally invasive wound or a natural cavity of the human body, and no side effect or injury is caused to the human body. Meanwhile, in-vivo free pathological hard objects can be effectively and accurately captured and crushed, and the limitation that a traditional pocket knife technology depends on the positions of the in-vivo pathological hard objects is broken through.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a fiber mesh cutter for non-injury crushing of in-vivo hard objects. BACKGROUND

[0002] In the medical field, the presence of pathological hard objects (such as kidney stones, gallstones, cataracts, etc.) in the human body poses a serious threat to human health. These hard objects can cause organ dysfunction, tissue damage, and abnormal physiological functions, causing great pain to patients. At the same time, some pathological hard objects in the body often appear in a free state, such as a free kidney stone that can move within the renal pelvis or ureter, causing severe pain and urinary obstruction, and a gallstone that can be free in the gallbladder or bile duct, causing cholecystitis, cholangitis, and other complications. These free pathological hard objects in the body further increase the harm to patients and the difficulty of treatment.

[0003] Currently, the commonly used treatment methods in clinical practice include surgical resection, extracorporeal shock wave, etc. Surgical resection can directly remove the hard objects, but has significant drawbacks such as large trauma, long recovery time, and high risk of complications. Extracorporeal shock wave is a non-invasive technique that uses the energy of extracorporeal shock wave to break the pathological hard objects, allowing them to be expelled or sucked out of the body. However, this method has certain limitations on the size, location, and hardness of the pathological hard objects, and may damage the surrounding tissues during the crushing process. Other physical or chemical stone-dissolving and stone-removing methods also have limitations and are only suitable for specific types of stones or small stones. For example, kidney stones are a common disease in the urinary system with a high incidence, and patients often suffer from severe pain, hematuria, and other symptoms, which can cause kidney function impairment in severe cases. Traditional surgical stone removal methods require incisions in the patient's body, resulting in large surgical trauma, long postoperative recovery time, and risks of complications such as infection and bleeding. Although extracorporeal shock wave lithotripsy technology reduces surgical trauma to some extent, it is not effective for larger and harder stones, and repeated treatment can cause kidney tissue damage. In addition, after surgery and extracorporeal shock wave lithotripsy, stone fragments may still cause pain and urinary obstruction during the expulsion process.

[0004] To reduce the difficulty of surgery and the harm of extracorporeal shock wave technology to the human body, a scoop-knife structure design has been developed, mainly consisting of a blade and a scoop net. The blade removes the attached tissues or pathological hard objects in the body, and then the scoop net collects them to prevent the removal of the objects from the body or movement. However, this scoop-knife structure is difficult to capture free pathological hard objects in the body and cannot crush them.

[0005] A fiber mesh cutter for non-injury crushing of in-vivo hard objects is proposed to solve the problems mentioned above. SUMMARY

[0006] The present application aims to provide a fiber mesh cutter for non-injury crushing of in-vivo hard objects to solve the problem that it is difficult to capture in-vivo free pathological hard objects and to crush them.

[0007] To achieve the above object, the present application provides the following technical solution: a fiber mesh cutter for non-injury crushing of in-vivo hard objects, comprising a fiber mesh bag and free pathological hard objects;

[0008] Further comprising:

[0009] The fiber mesh bag comprises a plurality of first fiber rope rings, and a plurality of second fiber rope rings are fixedly installed outside the plurality of first fiber rope rings, and the first fiber rope rings and the second fiber rope rings are interlaced with each other.

[0010] The fiber mesh bag is provided with a support frame on one side, a support frame inner cavity is formed in the inner side of the support frame, and a moving rod is arranged in the inner side of the support frame inner cavity.

[0011] The moving rod is fixedly installed with a mounting ring at one end, the mounting ring is made of a material with elastic deformation such as memory alloy and elastic polymer, and the mounting ring is arranged above the inner side of the plurality of first limiting rope rings.

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

[0013] Preferably, the fiber diameter of the first fiber rope ring and the second fiber rope ring is 1-100 mu m, the tensile strength of the first fiber rope ring and the second fiber rope ring is not less than 100 MPa, and the elastic modulus of the first fiber rope ring and the second fiber rope ring is not less than 10 GPa.

[0014] Preferably, the mesh aperture formed by interlacing the plurality of first fiber rope rings and the plurality of second fiber rope rings is 0.02-10 mm.

[0015] Preferably, the outer side of the moving rod is symmetrically installed with a mounting frame, the inner side of the two mounting frames is fixedly installed with a fixed block, the inner side of the fixed block is slidably connected with a positioning rod, and the end of the positioning rod is provided with an inclined slope.

[0016] Preferably, the outer side of the two positioning rods is sleeved with a telescopic spring, one end of the telescopic spring is fixedly connected with the fixed block, the other end of the telescopic spring is fixedly installed with a connecting block, and the connecting block is fixedly connected with the positioning rod.

[0017] Preferably, the two mounting frames are slidably connected with the support frame inner cavity, and the mounting ring can enter the support frame inner cavity after deformation.

[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 It is a schematic diagram of the fiber mesh bag structure of the present application;

[0022] Figure 2 It is a schematic diagram of the local structure of the present application;

[0023] Figure 3 It is a schematic diagram of the A area of the present application Figure 2

[0024] Figure 4 It is a schematic diagram of the free pathological hard object capturing structure of the present application;

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

[0026] In the figure: 1, fiber mesh bag; 101, first fiber rope ring; 102, second fiber rope ring; 2, support frame; 3, free pathological hard object; 4, support frame inner cavity; 5, moving rod; 501, mounting frame; 502, fixed block; 503, positioning rod; 504, extension spring; 505, connecting block; 6, mounting ring. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] Please refer to Figures 1-5 The present application provides a technical solution: a fiber mesh cutter for non-invasive crushing of in-vivo hard objects, comprising a fiber mesh bag 1 and a free pathological hard object 3, further comprising: the fiber mesh bag 1 comprises a plurality of first fiber rope rings 101, and a plurality of second fiber rope rings 102 are fixedly installed outside the plurality of first fiber rope rings 101, and the first fiber rope rings 101 and the second fiber rope rings 102 are interlaced with each other, wherein one side of the fiber mesh bag 1 is provided with a support frame 2, and a support frame inner cavity 4 is formed in the inner side of the support frame 2, and a moving rod 5 is arranged in the inside of the support frame inner cavity 4, wherein one end of the moving rod 5 is fixedly installed with a mounting ring 6, and the mounting ring 6 is made of a material with elastic deformation (such as memory alloy, elastic polymer, etc.), and the mounting ring 6 is arranged above the inside of the plurality of first limiting rope rings 101, which can effectively crush any type of pathological hard object in the body, breaking the limitations of traditional technology depending on the type and size of pathological hard objects in the body, and has the advantages of simple operation, high efficiency, and low cost, which can reduce the cost burden of patients.

[0029] ​The first fiber rope ring 101 and the second fiber rope ring 102 are made of high-strength high-modulus polyethylene, nylon, titanium wire and other organic and inorganic fibers. When the free pathological hard objects 3 are crushed, the strength of the fiber mesh bag can be guaranteed. The fiber diameter of the first fiber rope ring 101 and the second fiber rope ring 102 is 1-100 μm, the tensile strength of the first fiber rope ring 101 and the second fiber rope ring 102 is not less than 100 MPa, and the elastic modulus of the first fiber rope ring 101 and the second fiber rope ring 102 is not less than 10 GPa, so as to facilitate the crushing of the hard objects. The mesh aperture size formed by the interlacing of the first fiber rope ring 101 and the second fiber rope ring 102 is 0.02-10 mm, which facilitates the capture of the hard objects. The outer side of the moving rod 5 is symmetrically provided with a mounting bracket 501, one side of the two mounting brackets 501 is fixedly provided with a fixed block 502, the inside of the fixed block 502 is slidably connected with a positioning rod 503, one end of the positioning rod 503 is provided with a slope, the moving rod 5 can be supported, the outer side of the two positioning rods 503 is sleeved with an extension spring 504, one end of the extension spring 504 is fixedly connected with the fixed block 502, the other end of the extension spring 504 is fixedly provided with a connecting block 505, the connecting block 505 is fixedly connected with the positioning rod 503, so that the movement of the moving rod 5 can drive the movement of the positioning rod 503. The two mounting brackets 501 are slidably connected with the support frame inner cavity 4, and the mounting ring 6 can enter the support frame inner cavity 4 after deformation, which facilitates the deformation of the mounting ring 6 into the support frame inner cavity 4.

[0030] Working principle: Before using the fiber mesh cutter for non-injury crushing of hard objects in the body, the overall condition of the device needs to be checked to determine whether it can work normally. According to the size of the hard object to be crushed, the mounting ring 6 is deformed to a size that can accommodate the hard object to be crushed, and then the hard object to be crushed is placed in the mounting ring 6. The hard object to be crushed is then crushed by the fiber mesh cutter. Figure 1 - Figure 5As shown, when the free pathological hard object 3 in the patient's body is removed, the fiber net bag 1 can be stretched into the body, and then after determining the position of the free pathological hard object 3 in the body, the fiber net bag 1 is injected through a minimally invasive surgical incision or a natural cavity of the human body, and the support frame 2 sends out and opens the fiber net bag 1, and the open support port is beneficial to the capture of the free pathological hard object 3 of any shape. After the fiber net bag 1 captures the free 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 mounting ring 6 deforms to make the first fiber rope ring 101 enter the inner cavity 4 of the support frame, the captured free pathological hard object 3 is blocked by the cavity, at this time, the fiber net bag 1 is continuously contracted to generate a centripetal cutting and crushing force on the free pathological hard object 3, the fibers in the fiber net bag 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 stress on the free pathological hard object 3, and a large pressure is generated on a very small unit area of the fiber. Due to the high elastic modulus of the fiber, the tension is finally completely applied to the free pathological hard object 3, and will not be dissipated in the form of elastic energy on the fiber, at the same time, the high strength of the fiber ensures that the fiber will not be broken during the cutting and crushing of the free pathological hard object 3, and prevents the free pathological hard object 3 from escaping and being unable to be cut and crushed. By adjusting the fiber performance and pore size, any type of pathological hard object in the body can be effectively crushed, breaking the limitations of traditional technology depending on the type and size of the pathological hard object in the body, and the operation is simple, efficient and low in cost, which can reduce the cost burden of patients.

[0031] When the support frame 2 is inserted into the body, the positioning rod 503 abuts against the support frame 2, at this time, the moving rod 5 is kept in a static state, when the free pathological hard object 3 needs to be crushed, the moving rod 5 moves to drive the mounting ring 6 to move, so that the mounting frame 501 moves, after the mounting frame 501 moves, the slope on the positioning rod 503 abuts against the support frame 2, with the increase of the tension, the positioning rod 503 can be moved, after the positioning rod 503 moves, it slides on the fixed block 502 under the abutting action of the support frame 2, so that the extension spring 504 can be stretched, and the positioning rod 503 is shrunk into the inner cavity 4 of the support frame, the two positioning rods 503 can support the moving rod 5, avoiding that the whole is inserted into the body and the mounting ring 6 moves accidentally due to resistance.

[0032] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A fiber mesh cutter for in-vivo hard object non-injury pulverization, comprising a fiber mesh bag (1) and a free pathological hard object (3); characterized in that Further comprising: The fiber mesh bag (1) comprises a plurality of first fiber rope rings (101), and a plurality of second fiber rope rings (102) are fixedly installed outside the plurality of first fiber rope rings (101), and the first fiber rope rings (101) and the second fiber rope rings (102) are interlaced with each other; Wherein, one side of the fiber mesh bag (1) is provided with a support frame (2), and a support frame inner cavity (4) is formed in the inner side of the support frame (2), and a moving rod (5) is arranged in the inner side of the support frame inner cavity (4); Wherein, one end of the moving rod (5) is fixedly installed with a mounting ring (6), and the mounting ring (6) is made of a material with elastic deformation, and the mounting ring (6) is arranged above the inner side of the plurality of first limiting rope rings (101).

2. The fiber mesh cutter for non-invasive pulverization of hard objects in vivo according to claim 1, characterized in that: The plurality of first fiber rope rings (101) and the plurality of second fiber rope rings (102) are made of high-strength and high-modulus polyethylene, nylon, titanium wire and other organic and inorganic fibers; the mounting ring (6) is made of a material capable of elastic deformation such as memory alloy and elastic polymer.

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

4. The fiber mesh cutter for non-invasive pulverization of hard objects in vivo according to claim 1, characterized in that: The mesh aperture size formed by the interlacing of the plurality of first fiber rope rings (101) and the plurality of second fiber rope rings (102) is 0.02-10 mm.

5. The fiber mesh cutter for non-invasive pulverization of hard objects in vivo according to claim 1, characterized in that: The outer side of the moving rod (5) is symmetrically provided with a mounting frame (501), and the outer side of the two mounting frames (501) is fixedly provided with a fixed block (502), and the inner side of the fixed block (502) is slidably connected with a positioning rod (503), and one end of the positioning rod (503) is provided with an inclined slope.

6. The fiber mesh cutter for non-invasive pulverization of hard objects in vivo according to claim 5, characterized in that: The outer side of the two positioning rods (503) is sleeved with a telescopic spring (504), one end of the telescopic spring (504) is fixedly connected with the fixed block (502), the other end of the telescopic spring (504) is fixedly provided with a connecting block (505), and the connecting block (505) is fixedly connected with the positioning rod (503).

7. The fiber mesh cutter for non-invasive pulverization of hard objects in vivo according to claim 5, characterized in that: The two mounting frames (501) are slidably connected with the support frame inner cavity (4), and the mounting ring (6) can enter the support frame inner cavity (4) after deformation.

Images