Cardiac myxoma umbrella trap

Abstract

The application discloses a cardiac myxoma umbrella-shaped catcher, which comprises a mesh bag, a cavity arranged in the mesh bag, and an opening arranged on the cavity; a rubber ring arranged along the opening and fixedly connected with the mesh bag, used for contracting the opening through the elasticity of the rubber ring; two adjusters symmetrically arranged on two sides of the mesh bag and connected with the outer wall of the mesh bag, each of the adjusters comprising a sleeve and an adjusting rod; wherein the outer wall of the sleeve is connected with the mesh bag, one end of the adjusting rod is connected with the mesh bag, the other end of the adjusting rod extends to the outside through the sleeve, and the adjusting rod can move axially relative to the sleeve, so as to dynamically adjust the size of the opening. Therefore, the operation difficulty can be reduced, and the risk of postoperative organ embolism caused by the myxoma left in the heart after the myxoma is broken can be avoided.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a cardiac myxoma umbrella-shaped trap. Background Technology

[0002] Cardiac myxomas are the most common primary true tumors within the heart chambers. They are mostly benign and solitary, with the left atrium being the most common site. Their surface morphology is highly varied and heterogeneous, presenting as spherical, oval, irregular, and other shapes. Their size and weight also vary significantly, ranging from a few millimeters to tens of centimeters in diameter and from a few grams to hundreds of grams in weight. The proportion of their volume within the heart chamber varies, sometimes occupying only a small portion, sometimes occupying the majority, or even filling and blocking the entire heart chamber.

[0003] Because myxomas are gelatinous and fragile, they often adhere to the cardiac chamber wall, and their mobility is restricted by the pedicle. Given the potential risks of blood flow obstruction and fragment embolism, early surgical resection is necessary. The surgical approach typically involves a right atrial incision depending on the tumor's location. During the procedure, surgeons will avoid directly clamping or touching the tumor with forceps, especially with grape-shaped or polypoid myxomas, to prevent breakage and dislodgement. A suitably sized, flexible spoon is used to support the tumor, or a suction device with moderate suction is used to lift and remove it. However, even with these precautions, myxomas are fragile and difficult to remove completely. If the tumor breaks and remains inside the heart, it increases the risk of postoperative organ embolism. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, one objective of this invention is to provide a cardiac myxoma umbrella-shaped capture device that can not only reduce the difficulty of surgical operation, but also avoid the unexpected risk of myxoma rupture and remaining in the heart, causing postoperative organ embolism.

[0006] To achieve the above objectives, the present invention provides a cardiac myxoma umbrella-shaped trap, comprising: A net bag with an internal cavity and an opening in the cavity; A rubber ring, arranged along the opening and fixedly connected to the net, is used to elastically contract the opening; Two adjusters are symmetrically arranged on both sides of the net and connected to the outer wall of the net. Each adjuster includes a sleeve and an adjusting rod. The outer wall of the sleeve is connected to the net bag, one end of the adjusting rod is connected to the net bag, the other end of the adjusting rod extends through the sleeve to the outside, and the adjusting rod can move axially relative to the sleeve to dynamically adjust the size of the opening.

[0007] This invention relates to a cardiac myxoma umbrella-shaped trap. Two adjusters are used to insert a net into the heart through a surgical incision. The surgeon can then flexibly adjust the distance between the two adjusters according to the actual size of the myxoma, while simultaneously moving an adjusting rod relative to the cannula to precisely adjust the opening size, ensuring the myxoma can smoothly pass through and enter the net. Once the net completely covers the myxoma, the surgeon can gradually remove the force applied to the adjusting rod. At this point, the rubber ring will elastically contract the opening, adaptively and tightly adhering to the surface of the myxoma's pedicle. Even if the myxoma ruptures during subsequent surgery, the broken tissue will be contained within the net, effectively preventing it from falling into the heart. Finally, the surgeon removes the entire myxoma and surrounding myocardial tissue along the pedicle, and then removes the net along with the removed myxoma. This method not only reduces the difficulty of the surgical procedure but also avoids the risk of postoperative organ embolism caused by a ruptured myxoma remaining in the heart.

[0008] In addition, the cardiac myxoma umbrella-shaped trap proposed in the application may also have the following additional technical features: Specifically, the net has multiple connection points, and the adjusting rod includes a first rod body, a second rod body, and a sliding rod. The first rod body is rotatably connected to the corresponding connection point. A sliding cavity is provided inside the first rod body. One end of the sliding rod is slidably connected in the sliding cavity, and the other end of the sliding rod is hinged to the second rod body. The end of the second rod body away from the first rod body passes through the sleeve, and the sleeve is rotatably connected to the corresponding connection point.

[0009] Specifically, the sleeve has a limiting cavity inside, which is coaxially connected to the lumen of the sleeve. The second rod has a limiting ring on its outer wall, which is slidably connected in the limiting cavity. A spring is sleeved on the outer wall of the second rod, one end of which is fixed in the limiting cavity, and the other end of which is fixedly connected to the limiting ring.

[0010] Specifically, it also includes threaded sleeves and two screws with opposite thread directions; The two screws are respectively fixed on the outer wall of the corresponding sleeve, and the threaded sleeve is arranged between the two screws and is threadedly connected to the screws respectively.

[0011] Specifically, it also includes a connecting rod, which is provided with a slider. The slider is axially movable relative to the connecting rod, and the slider is detachably connected to the corresponding adjusting rod.

[0012] Specifically, the sleeve has a through groove, and a push block is slidably connected in the through groove. One end of the push block protrudes from the through groove, and the other end of the push block is connected to the adjusting rod.

[0013] Specifically, the net includes a first state and a second state; In the first state, the net is compressed and folded together into a sheet shape; in the second state, the net is opened into an umbrella shape. Attached Figure Description

[0014] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a cardiac myxoma umbrella-shaped trap according to an embodiment of the present invention; Figure 2 This is a schematic diagram illustrating the disassembly of the connecting rod and threaded sleeve according to an embodiment of the present invention. Figure 3 In accordance with the present invention Figure 2 Enlarged structural diagram of area A in the middle; Figure 4 This is a cross-sectional view of a sleeve according to an embodiment of the present invention; Figure 5 In accordance with the present invention Figure 4 A magnified structural diagram of region B in the middle; Figure 6 This is a schematic diagram of a net in a first state according to an embodiment of the present invention.

[0017] As shown in the figure: 1. Net bag; 10. Opening; 11. Connection point; 2. Rubber ring; 3. Adjuster; 30. Sleeve; 31. Adjusting rod; 32. Limiting ring; 33. Spring; 300. Limiting cavity; 301. Through groove; 310. First rod body; 311. Second rod body; 312. Slide rod; 4. Threaded sleeve; 5. Screw; 6. Connecting rod; 60. Slider; 7. Push the block. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of the present invention, the solutions of the present invention will be further described below. It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the invention, but the invention may also be practiced in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of the invention, and not all embodiments.

[0020] The following description, in conjunction with the accompanying drawings, describes an embodiment of the cardiac myxoma trapping device of the present invention.

[0021] like Figures 1-5 As shown, the cardiac myxoma umbrella trap of this embodiment of the invention may include a net bag 1, a rubber ring 2, and two adjusters 3.

[0022] The net bag 1 has a cavity inside (not shown in the figure), and an opening 10 is provided on the cavity. The opening 10 is used as an inlet for the cardiac myxoma to enter the net bag 1.

[0023] The rubber ring 2 is arranged along the opening 10 and fixedly connected to the net bag 1. It is used to form an elastic constriction by its own elastic contraction of the opening 10. After the elastic constriction wraps the tumor to the pedicle, it can form a dynamic seal through its own tension, thus constricting and wrapping the entire myxoma and effectively preventing the myxoma from overflowing through the opening 10 after it breaks.

[0024] Two adjusters 3 are symmetrically arranged on both sides of the mesh bag 1 and connected to the outer wall of the mesh bag 1. It can be understood that, compared with the solution of directly fixing the adjusters 3 at the opening 10 or fixing them to the rubber ring 2, this arrangement has the following advantages: First, the adjusters 3 are kept at a certain distance from the opening 10, which can effectively avoid interference between the surgical instruments and the adjusters 3 during operation, providing convenience for the operation of the surgical instruments and ensuring the smooth progress of the surgical procedure. Second, this arrangement can minimize the interference with the sealing effect of the rubber ring 2 fixed on the myxoma, allowing the rubber ring 2 to adhere more tightly and closely to the irregular surface of the tumor, thereby improving the sealing effect.

[0025] Each adjuster 3 includes a sleeve 30 and an adjusting rod 31, wherein the outer wall of the sleeve 30 is connected to the net 1, one end of the adjusting rod 31 is connected to the net 1, the other end of the adjusting rod 31 extends through the sleeve 30 to the outside, and the adjusting rod 31 can move axially relative to the sleeve 30 to dynamically adjust the size of the opening 10.

[0026] Specifically, during the actual myxoma removal surgery, the surgeon only needs to hold one regulator 3 in each hand and control the two regulators 3 to insert the net bag 1 into the heart through the surgical incision, positioning the net bag 1 below the myxoma. Subsequently, the surgeon can flexibly adjust the distance between the two regulators 3 according to the actual size of the myxoma, while simultaneously pushing the adjusting rod 31 relative to the cannula 30 to precisely adjust the size of the opening 10, ensuring that the myxoma can smoothly pass through the opening 10 and enter the net bag 1.

[0027] Once the net 1 has completely covered the myxoma, the surgeon can gradually remove the force applied to the adjusting rod 31. At this point, the rubber ring 2 will automatically and tightly conform to the surface of the myxoma's pedicle by contracting its opening 10. Even if the myxoma breaks during subsequent surgical procedures, the broken and detached tumor tissue will be contained in the net 1, effectively preventing it from falling into the heart.

[0028] Finally, the doctor removes the entire myxoma and surrounding myocardial tissue along the pedicle, and then removes the net bag 1 along with the removed myxoma. This procedure not only reduces the difficulty of the surgery but also avoids the risk of myxoma rupture and remaining in the heart, which could lead to postoperative organ embolism.

[0029] In one embodiment of the present invention, such as Figure 1 , Figure 2 and Figure 3 As shown, the net bag 1 has multiple connection points 11. The adjusting rod 31 includes a first rod body 310, a second rod body 311, and a sliding rod 312. The first rod body 310 is rotatably connected to the corresponding connection point 11. A sliding cavity is provided inside the first rod body 310. One end of the sliding rod 312 is slidably connected in the sliding cavity. The other end of the sliding rod 312 is hinged to the second rod body 311. A sleeve 30 is passed through the end of the second rod body 311 away from the first rod body 310, and the sleeve 30 is rotatably connected to the corresponding connection point 11.

[0030] It should be noted that the connection point 11 can be a rod-shaped object. That is, the sleeve 30 and the adjusting rod 31 are connected to the net bag 1 through the connection point 11. Setting the connection point 11 as a transition can avoid the sleeve 30 and the adjusting rod 31 being directly connected to the net bag 1, reducing the impact of wrinkles and tears on the net bag 1 during operation, thereby improving the service life of the net bag 1.

[0031] In the above scheme, after the net 1 is set up, the operator can flexibly adjust its position by rotating the sleeve 30 when facing complex surgical situations. In this way, suitable operating space can be created for surgical instruments, effectively avoiding potential interference and thus meeting the operational needs under complex surgical pathways.

[0032] Meanwhile, during the rotation of the cannula 30, the rotational motion generated by the second rod 311 is cleverly converted into the rotation of the first rod 310 via the slide rod 312. Moreover, the slide rod 312 can slide while converting the motion. This sliding can accurately compensate for the displacement generated during the rotation, effectively preventing jamming and ensuring that the cannula 30 can rotate smoothly to meet the actual rotation requirements during surgery.

[0033] In one embodiment of the present invention, such as Figure 4 and Figure 5 As shown, a limiting cavity 300 is provided inside the sleeve 30. The limiting cavity 300 is coaxially connected to the lumen of the sleeve 30. A limiting ring 32 is provided on the outer wall of the second rod 311. The limiting ring 32 is slidably connected in the limiting cavity 300. A spring 33 is sleeved on the outer wall of the second rod 311. One end of the spring 33 is fixed in the limiting cavity 300, and the other end of the spring 33 is fixedly connected to the limiting ring 32.

[0034] Specifically, during operation, a pushing force can be applied to the second rod 311. When the second rod 311 moves under force, it will cause the limiting ring 32 connected to it to slide within the limiting cavity 300. During this process, the limiting ring 32 will exert a stretching effect on the spring 33, causing the spring 33 to deform and accumulate elastic potential energy.

[0035] After the net 1 is successfully placed over the myxoma, the applied force on the second rod 311 is removed. At this point, the elastic potential energy stored in the spring 33 is released, pulling the second rod 311 back. Through this series of actions, the net 1 can be made to fit tightly against the myxoma, ensuring a good wrapping effect, thereby further reducing the risk of the myxoma breaking and spilling out during the operation.

[0036] In one embodiment of the present invention, such as Figure 1 As shown, the cardiac myxoma umbrella-shaped catcher of this embodiment of the invention also includes a threaded sleeve 4 and two screws 5 with opposite thread directions. The two screws 5 are respectively fixed on the outer wall of the corresponding sleeve 30, and the threaded sleeve 4 is arranged between the two screws 5 and is threadedly connected to the screws 5 respectively.

[0037] In the above scheme, the net bag 1 is inserted into the heart through a surgical incision and positioned below the myxoma. First, by rotating the threaded sleeve 4, the threaded sleeve 4 can synchronously drive the two screws 5 with opposite thread directions to move closer or further apart, thereby adjusting the distance between the two adjusters 3, that is, adjusting the width of the opening 10. This makes it easier to operate, as only the length of the opening 10 needs to be adjusted by pushing the second rod 311 when the net bag 1 is put into the myxoma.

[0038] Furthermore, such as Figure 1 As shown, the cardiac myxoma umbrella-shaped catcher of this embodiment of the invention also includes a connecting rod 6. The connecting rod 6 is provided with a slider 60. The slider 60 can move axially relative to the connecting rod 6. The slider 60 is detachably connected to the corresponding adjusting rod 31. The detachable connection can be achieved by providing a groove adapted to the adjusting rod 31 at one end of the slider 60 near the adjusting rod 31, so as to facilitate the insertion of one end of the adjusting rod 31.

[0039] In the above scheme, the addition of a connecting rod 6, which works in conjunction with the threaded sleeve 4, enables a one-handed operation mode. During operation, after adjusting the width of the opening 10 using the threaded sleeve 4 and screw 5, the surgeon places their thumb on the connecting rod 6, with the other four fingers naturally resting on the surface of the threaded sleeve 4. At this point, applying a pushing force with the thumb will cause the connecting rod 6 to simultaneously move the two second rods 311, thus allowing for flexible adjustment of the opening 10's size. Compared to traditional one-handed operation, this design frees up the surgeon's other hand, allowing them to perform other medical procedures and effectively improving surgical efficiency.

[0040] Furthermore, the slider 60 adopts a sliding design, which will not interfere with the adjustment of the distance between the two adjusters 3 via the threaded sleeve 4, while ensuring the installation of the connecting rod 6. At the same time, the slider 60 and the adjusting rod 31 are detachably connected, allowing the surgeon to easily remove the connecting rod 6 according to actual surgical needs. (See details in [reference needed]). Figure 2 In this way, doctors can use both hands to operate in situations where the surgery is more difficult, ensuring the accuracy and safety of the procedure.

[0041] In one embodiment of the present invention, such as Figure 1 As shown, a through groove 301 is provided on the sleeve 30, and a push block 7 is slidably connected in the through groove 301. One end of the push block 7 protrudes out of the through groove 301, and the other end of the push block 7 is connected to the adjusting rod 31.

[0042] The addition of the push block 7, understandably, greatly facilitates operation by holding the adjuster 3 with both hands. In practice, the surgeon can directly push the push block 7 with their thumb. The force applied to the push block 7 will move the second rod 311, thereby allowing for flexible adjustment of the opening size 10. Compared to pushing the second rod 311 from the rear, this adjustment method using the push block 7 is more convenient and efficient, effectively improving the smoothness and convenience of the surgical procedure.

[0043] In one embodiment of the present invention, the net 1 is made of an elastic material, which may be medical-grade silicone, thermoplastic polyurethane, etc. Its chemical composition is stable and will not release allergenic substances (such as small molecule impurities, heavy metals) to the human body, nor will it cause adverse reactions (such as inflammation, allergies, rejection reactions) with blood, body fluids or tissues. It can be selected according to the actual situation. It is understood that the elastic material can be freely stretched or contracted within a certain range, without the need to customize special nets for different tumors: it can adapt to both small and large tumors, and has stronger adaptability.

[0044] Furthermore, the net 1 includes a first state and a second state; wherein, in the first state, the net 1 is compressed and folded together into a sheet shape, as can be seen from... Figure 6 In the first state, the bottom part of the net bag 1 is folded from bottom to top and hidden inside the net bag 1. At the same time, the inner wall of the net bag 1 can be compressed together and fitted, which makes it convenient for medical staff to place the front end of the regulator 3 and the net bag 1 in the first state into the heart. In the second state, the net bag 1 is opened into an umbrella shape with a larger opening 10 at the top, which makes it easier to directly fit the myxoma, making the operation more convenient.

[0045] It should be noted that after the net 1 in the first state is placed in the heart, the opening 10 can be opened by adjusting the distance between the two regulators 3 and the position of the adjusting rod 31. This allows the net 1 to be stretched out by rubbing. During the process of removing the myxoma, the net 1 is affected by the movement of the left and right regulators 3, and slowly moves from bottom to top to wrap the myxoma in the net 1. The net 1 then gradually expands and opens into an umbrella shape, thus forming the transition from the first state to the second state.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0047] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cardiac myxoma umbrella-shaped trap, characterized in that, include: A net bag with an internal cavity and an opening in the cavity; A rubber ring, arranged along the opening and fixedly connected to the net, is used to elastically contract the opening; Two adjusters are symmetrically arranged on both sides of the net and connected to the outer wall of the net. Each adjuster includes a sleeve and an adjusting rod. The outer wall of the sleeve is connected to the net bag, one end of the adjusting rod is connected to the net bag, the other end of the adjusting rod extends through the sleeve to the outside, and the adjusting rod can move axially relative to the sleeve to dynamically adjust the size of the opening; It also includes threaded sleeves and two screws with opposite thread directions; The two screws are respectively fixed on the outer wall of the corresponding sleeve, and the threaded sleeve is arranged between the two screws and is threadedly connected to the screws respectively. The threaded sleeve can synchronously drive the two screws to move closer or further apart, thereby adjusting the distance between the two adjusters; During the surgery, the net was placed below the myxoma; The net bag is affected by the movement of the regulator, and moves from bottom to top to wrap the myxoma in the net bag; The rubber ring, by its own elastic contraction opening, adaptively and tightly adheres to the surface of the pedicle of the myxoma.

2. The cardiac myxoma umbrella-shaped trap according to claim 1, characterized in that, The net has multiple connection points. The adjusting rod includes a first rod body, a second rod body, and a sliding rod. The first rod body is rotatably connected to the corresponding connection point. A sliding cavity is provided inside the first rod body. One end of the sliding rod is slidably connected in the sliding cavity. The other end of the sliding rod is hinged to the second rod body. The end of the second rod body away from the first rod body passes through the sleeve, and the sleeve is rotatably connected to the corresponding connection point.

3. The cardiac myxoma umbrella-shaped trap according to claim 2, characterized in that, The sleeve has a limiting cavity inside, which is coaxially connected to the lumen of the sleeve. The second rod has a limiting ring on its outer wall, which is slidably connected in the limiting cavity. A spring is sleeved on the outer wall of the second rod, one end of which is fixed in the limiting cavity, and the other end of which is fixedly connected to the limiting ring.

4. The cardiac myxoma umbrella-shaped trap according to claim 1, characterized in that, It also includes a connecting rod, which is provided with a slider. The slider is axially movable relative to the connecting rod, and the slider is detachably connected to the corresponding adjusting rod.

5. The cardiac myxoma umbrella-shaped trap according to any one of claims 1-4, characterized in that, The sleeve has a through groove, and a push block is slidably connected in the through groove. One end of the push block protrudes from the through groove, and the other end of the push block is connected to the adjusting rod.

6. The cardiac myxoma umbrella-shaped trap according to claim 5, characterized in that, The net is made of elastic material.

7. The cardiac myxoma umbrella-shaped trap according to claim 6, characterized in that, The net includes a first state and a second state; In the first state, the net is compressed and folded together into a sheet shape; in the second state, the net is opened into an umbrella shape.

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