Fixing device capable of easily recognizing target tissue in surgical operation

Abstract

The invention discloses a fixing device capable of easily identifying a target tissue in a surgical operation, the fixing device comprises a marking part and a fixing part, and the marking part is arranged at one end of the fixing device and is used for being at least partially located outside a micro cavity or a cavity-free structure so as to be identified. And the marking part can be positioned outside the micro cavity or the cavity-free structure, so that the marking part is convenient to identify and observe. Especially in the field of anastomosis of microscopic or ultramicro cavities, the sizes of the cavities are small, and due to the fact that part of body fluid such as blood can flow out, the operation view is not clear, the marking part is arranged and used for marking the specific position of the fixing device in the operation, the fixing device can be conveniently and easily recognized and observed by an operator, operation is facilitated, and operation efficiency is improved. The operation time can be shortened, and the operation risk is reduced. Or, the marking part is located at the position of the cavity-free structure, so that the operator can conveniently identify the corresponding cavity-free structure, and the cavity-free structure can be conveniently butted and stitched.

Description

Technical Field

[0001] The present invention relates to the field of medical surgical cavity anastomosis auxiliary instruments, and in particular to a fixing device that is easy to identify target tissue during surgical operations. Background Art

[0002] During surgery, the target tissue needs to be repaired to restore its function, which mainly includes the anastomosis of cavity tissue and the docking suturing of tissue without cavity structure. Cavity anastomosis is a basic surgical form in clinical practice, including cavity injury repair, cavity transplantation, cavity overlap, cavity suturing and repair, etc. It can be used in the fields of blood vessels, lymphatic tracts, vas deferens, fallopian tubes, ureters, bile ducts, trachea, bronchi and other cavities. It is a commonly used and effective treatment method for reconstructing cavity function. Cavity anastomosis is widely used and is commonly seen in various surgical operations, such as flap transplantation, limb replantation, accidental vascular injury, organ transplantation, arteriovenous fistula anastomosis, lymphatic duct anastomosis, vas deferens anastomosis, fallopian tube anastomosis, ureteral anastomosis, bile duct anastomosis, tracheal anastomosis, etc. In addition, docking suturing includes the docking suturing of tissues such as nerves, tendons, ligaments and other tissues without cavity structure.

[0003] With the continuous development of microsurgical instruments, microsutures, and surgical microscopes, micro- or ultra-micro-cavity anastomosis technology has gradually matured, and the cavities that can be anastomosed have become increasingly finer. Currently, there is a market gap for products below 1mm. However, in the field of cavitary anastomosis, especially in the field of micro- or ultra-micro-cavitary anastomosis, such as lymphatic anastomosis in flap transplantation, the cavities to be anastomosed are very small and transparent, and the surgical field of view is obscured due to the partial outflow of blood and other body fluids, making it difficult to observe clearly with the naked eye. This places high demands on the operator. Effectively marking the lymphatic vessels or other microscopic tissues to be anastomosed will help the operator identify the target tissue, facilitate the operation, shorten the operation time, and reduce surgical risks. In addition, in the docking and suturing of tissues such as nerves, tendons, and ligaments without cavities, especially when multiple non-cavitary structures or cavitary structures are present simultaneously, effective marking of the tissue location of the non-cavitary structure not only facilitates the operator's identification of the corresponding non-cavitary structure, but also facilitates docking and suturing of the non-cavitary tissue. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the above-mentioned defects of the prior art in microscopic or ultramicro lumen anastomosis or in docking suturing of non-lumen structures, and to provide a fixation device that can easily identify target tissues during surgical operations.

[0005] The present invention solves the above technical problems through the following technical solutions:

[0006] A fixing device for easily identifying target tissue during a surgical operation. The fixing device includes a marking part and a fixing part. The marking part is arranged at one end of the fixing device and is used to be at least partially located outside a microchannel or outside a structure without a channel for identification.

[0007] In this solution, the marking part can be located outside the microchannel or outside the structure without a channel, so as to be easily identified and observed. Especially in the field of anastomosis of microscopic or ultra-microscopic channels, the size of the channel is small, and the size of the fixing part is even smaller. Coupled with the fact that part of body fluids such as blood will flow out, making the surgical field of view unclear, it is difficult to identify and observe the fixing device. By setting the marking part to mark the specific position of the fixing device during the operation, it can be conveniently and easily identified and observed by the operator, that is, the target tissue is easily identifiable, which is beneficial to the operation of the surgery and can shorten the operation time and reduce the surgical risk. Or, the marking part is located at the position of the structure without a channel, so as to facilitate the operator to identify the corresponding structure without a channel, especially a microscopic structure without a channel, when there are multiple structures without a channel or channel structures existing simultaneously, so as to facilitate docking and suturing of the structure without a channel.

[0008] Preferably, the fixing part is arranged at the other end of the fixing device and is used to at least partially extend into the microchannel or to be attached to the structure without a channel.

[0009] In this solution, when the fixing part extends into the channel, it can support and fix the channel, restore the channel to its original shape, and facilitate the operator to perform anastomosis operations. In addition, the fixing part can also be attached to the structure without a channel, so that the marking part is located at the position of the structure without a channel, which is convenient for the operator to identify the corresponding structure without a channel, especially a microscopic structure without a channel, and perform docking and suturing operations on the structure without a channel.

[0010] Preferably, the marking part serves as a clamping part for being clamped.

[0011] In this solution, the marking part can also serve as a clamping part, which is convenient for the operator to directly clamp with hands or other surgical instruments. Especially when removing the device, it is easier to safely remove the device by clamping the clamping part.

[0012] Preferably, the fixing device further includes a rod body. The two ends of the rod body are respectively connected to the fixing part and the marking part; or, the rod body is connected to the fixing part, and at least part of the structure of the rod body serves as the marking part.

[0013] In this solution, the rod can connect the fixing part and the marking part, or at least part of the structure of the rod can serve as the marking part, so that the fixing device can be configured according to requirements. When the rod can be easily recognized and observed by the operator, or can be easily clamped by the operator, there is no need to additionally provide a marking part or a clamping part; when the rod is not convenient for the operator to recognize and observe, or is not convenient for the operator to clamp, a marking part or a clamping part can be additionally provided.

[0014] Preferably, the maximum outer diameter of the marking part is not less than the maximum outer diameter of the fixing part.

[0015] In this solution, by adopting the above structural form, the marking part is easier to be recognized and observed than the fixing part. Also, when the marking part serves as the clamping part, the marking part is easier to be clamped by the operator, thus facilitating the overall removal of the fixing device.

[0016] Preferably, at least one of the above-mentioned fixing part, marking part, rod, and the following connecting part and neck is set in a bright and eye-catching color. Preferably, the color includes but is not limited to at least one of red, yellow, blue, orange, purple, and green.

[0017] In this solution, by configuring at least one of the fixing part, marking part, rod, connecting part, and neck in a bright and eye-catching color, it is convenient for the operator to recognize and observe, or clamp. The bright and eye-catching colors mainly include red, yellow, blue, orange, purple, green, etc. However, the bright and eye-catching colors are not limited to these listed colors. It can be understood that other colors that are convenient for recognition and observation, or clamping, can also be selected.

[0018] Preferably, the marking part has a different-color area, and the color of the different-color area is different from the colors of other areas of the fixing device; or, the fixing device has a consistent color.

[0019] In this solution, the marking part adopts a more bright and eye-catching color, which is different from the colors of other areas of the fixing device, so that the marking part is easier to be recognized and observed, and is easier to be clamped when serving as the clamping part. The whole fixing device can have a consistent bright and eye-catching color, so that the whole is easy to be recognized and observed, and is easier to be clamped when serving as the clamping part.

[0020] Preferably, at least one of the above-mentioned fixing part, marking part, rod, and the following connecting part and neck contains a developer, a fluorescent agent, or a magnetic material.

[0021] In this solution, at least one of the fixing part, the marking part, the rod body, the connecting part, and the neck contains a developer, a fluorescent agent, or a magnetic material, so that this part is more easily recognizable and observable. Especially during surgery, in case the fixing device cannot be found for some reason, containing the above components can help the operator quickly find the fixing device.

[0022] Preferably, the marking part is a two-dimensional flat structure or a three-dimensional solid structure.

[0023] Preferably, when the marking part is a two-dimensional flat structure, the marking part is circular, oval, fan-shaped, polygonal, heart-shaped, or star-shaped.

[0024] Preferably, the polygon is a square, a rectangle, a triangle, a hexagon, an octagon, a rhombus, or a trapezoid.

[0025] Preferably, when the marking part is a two-dimensional flat structure and the marking part is connected to the fixing part through the rod body, the axis of the rod body is located in the plane where the marking part is located, or is parallel to the plane where the marking part is located, or there is an included angle.

[0026] Preferably, the thickness of the marking part is not greater than the thickness of the rod body.

[0027] Preferably, when the marking part is a three-dimensional solid structure, the marking part is a solid of revolution or a polyhedron.

[0028] Preferably, the solid of revolution is a sphere, an ellipsoid, a cylinder, a cone, a frustum of a cone, a gourd shape, an olive shape, a pear shape, a water droplet shape, a jujube shape, a bullet shape, an egg shape, a handle shape, or a Roman column shape.

[0029] Preferably, the polyhedron is a cube, a cuboid, a prism, a pyramid, a frustum of a pyramid, or a special-shaped polyhedron.

[0030] Preferably, the axis of the rod body is coaxial with the axis of the fixing part, or there is an included angle.

[0031] In this solution, the axis of the rod body and the axis of the fixing part can be configured to be coaxial or have an included angle according to requirements, so as to facilitate the operator to put in and take out the fixing part without being hindered by the cavity during the operation. Moreover, the connection angle between the rod body and the marking part or the clamping part can be set at any angle, so that the marking part or the clamping part can be easily recognized and observed by the operator, or can be easily clamped by the operator.

[0032] Preferably, when the axis of the rod body has an included angle with the axis of the fixing part, the connection position of the rod body and the fixing part is the end of the fixing part, or the middle part, or any position between the end and the middle part.

[0033] In this solution, the connection position between the rod body and the fixing part can also be selected according to requirements, so as to facilitate the operator to put in and take out the fixing part without being obstructed by the cavity during the operation.

[0034] Preferably, in the axial direction of the rod body, the outer diameter of the rod body is equal or unequal.

[0035] In this solution, the outer diameter of the rod body can be configured to be equal or unequal according to requirements, so as to facilitate the operator to identify and observe, or to facilitate the operator to grip.

[0036] Preferably, when the outer diameter of the rod body is unequal, the outer diameter of the middle part of the rod body is greater than that of the two ends; or, along the direction away from the fixing part, the outer diameter of the rod body gradually increases; or, the rod body is of special shape.

[0037] In this solution, the outer diameter of the rod body can be configured to be unequal through the above structural forms, and the corresponding structural form can be selected according to the usage requirements.

[0038] Preferably, the maximum outer diameter of the rod body is not greater than the maximum outer diameter of the marking part.

[0039] In this solution, it is convenient for the operator to put in and take out the fixing part without being obstructed by the cavity during the operation.

[0040] Preferably, the fixing device further includes a neck, and the neck is connected between the fixing part and the rod body.

[0041] In this solution, by providing a thinner neck between the fixing part and the rod body, it is convenient for the operator to put in and take out the fixing part without being obstructed by the cavity during the operation.

[0042] Preferably, the maximum outer diameter of the neck is not greater than the minimum outer diameter of the rod body.

[0043] Preferably, the axis of the neck is coaxial with the axis of the fixing part, or has an included angle with the axis of the fixing part; and / or, the axis of the neck is coaxial with the axis of the rod body, or has an included angle with the axis of the rod body.

[0044] In this solution, the relative positions of the axis of the neck with the axes of the fixing part and the rod body can be configured according to requirements, so as to facilitate the operation of the operator.

[0045] Preferably, the other end of the fixing device has a plurality of fixing parts, and the plurality of fixing parts are used to extend into different micro-cavities or be attached to different cavity-free structures, and the plurality of fixing parts are connected by a connecting part.

[0046] In this solution, the fixing device is configured with a plurality of fixing parts and connected by a connecting part, so that the plurality of fixing parts on one fixing device can extend into a plurality of same-type or different-type channels and perform support and fixation, thus facilitating the operation of anastomosis surgery. Alternatively, the plurality of fixing parts can also be attached to different non-channel structures to connect with the non-channel structures, thus facilitating the operation of docking suture for the corresponding non-channel structures.

[0047] Preferably, the connecting part includes at least one connecting rod, and the fixing part is arranged at the extending end of the connecting rod.

[0048] In this solution, the extending end of the connecting rod can be used as the setting position of the fixing part, so that the fixing part is located at the end of the connecting rod, facilitating the fixing part to extend into the channel or to be attached to the non-channel structure.

[0049] Preferably, the maximum outer diameter of the connecting rod connected to the fixing part is not greater than the maximum outer diameter of the corresponding fixing part.

[0050] Preferably, the axis of the fixing part is coaxial with or has an included angle with the axis of the connecting rod connected thereto.

[0051] In this solution, the axis of the fixing part can be configured to be coaxial with or have an included angle with the axis of the connecting rod connected thereto according to the usage requirements, so as to adapt to various anastomosis requirements between same-type or different-type channels. The fixing device can be applied to more usage scenarios, not only for blood vessels, but also for channels in many fields such as lymphatic ducts, vas deferens, fallopian tubes, ureters, bile ducts, tracheas, bronchi, etc. Moreover, it can be applied to the usage scenarios of same-type channels (such as anastomosis of blood vessels) and also to the usage scenarios of different-type channels (such as anastomosis of blood vessels and lymphatic vessels).

[0052] Preferably, the sizes of the plurality of fixing parts are partially the same, or all the same, or all different.

[0053] In this solution, the sizes of multiple fixing parts can be configured to be partially the same, or all the same, or all different according to the size of the cavity, so as to adapt to the size requirements of various cavities. In the case where there are cavities of multiple sizes that need to be supported and fixed during a surgery, if the fixing device of the present invention is adopted, the larger fixing parts can be selected according to the size of the cavity to support and fix the large-sized cavity, and the smaller fixing parts can be used to support and fix the small-sized cavity. In this way, the number of types of the purchased fixing device can be reduced by at least half. In the case where there are only two types of cavity diameters, only one type of fixing device needs to be purchased. This can reduce the number of manufacturing molds by half and reduce the number of purchased types by half, which greatly reduces the manufacturing cost of the product and also reduces the treatment cost of the patient. The fixing device can also support and fix two or more cavities with different diameters simultaneously using one fixing device, instead of separately selecting different fixing devices for two or more cavities with different diameters, reducing the number of instruments required during the surgery, saving the treatment cost, and being applicable to more complex surgeries.

[0054] Preferably, the fixing device further includes a rod body, and two ends of the rod body are respectively connected to the connecting part and the marking part; or, the rod body is connected to the connecting part, and at least part of the structure of the rod body serves as the marking part.

[0055] In this solution, when the fixing device has multiple fixing parts and the multiple fixing parts are connected by a connecting part, the rod body can connect the marking part and the connecting part, or at least part of the structure of the rod body can serve as the marking part, so that the fixing device can be configured according to requirements. When the rod body can be easily recognized and observed by the operator, or can be easily clamped by the operator, there is no need to additionally provide a marking part or a clamping part; when the rod body is not convenient for the operator to recognize and observe, or is not convenient for the operator to clamp, a marking part or a clamping part can be additionally provided.

[0056] Preferably, the axis of the rod body is coaxial with, parallel to, or has an included angle with the axis of the connecting part or a part of the structure of the connecting part.

[0057] In this solution, the relative position of the axis of the rod body and the axis of the connecting part or a part of the structure of the connecting part can be configured according to requirements, so as to facilitate the operation of the operator.

[0058] Preferably, the fixing device further includes a neck, and the neck is connected between the connecting part and the rod body.

[0059] Preferably, the other end of the fixing device has two fixing parts, the connecting part is a connecting rod, and the two fixing parts are arranged at two opposite extending ends of the connecting rod.

[0060] In this solution, the connecting portion can connect two fixing portions. The two fixing portions can respectively extend into two same or different types of cavities, and can support and fix the two cavities. Or the two fixing portions can be respectively attached to different cavity-free structures, so that the two cavity-free structures are both easy to identify.

[0061] Preferably, the marking portion is located on the opposite side of the fixing portion and corresponds to the position between the two fixing portions.

[0062] In this solution, the marking portion is located on the opposite side of the fixing portion and corresponds to the position between the two fixing portions. This layout method can not only prevent the marking portion from affecting the operation of the operator on the fixing portion, but also facilitate the identification, observation, or clamping of the marking portion.

[0063] Preferably, the other end of the fixing device has three of the fixing portions. The connecting portion includes a first connecting rod and a second connecting rod. The two ends of the first connecting rod are extension ends. One end of the second connecting rod is connected to the first connecting rod, and the other end is an extension end. The three fixing portions are respectively arranged at the corresponding extension ends.

[0064] In this solution, by configuring three fixing portions, three cavities can be supported and fixed simultaneously. For example, it can be applied to vascular surgical operations such as bifurcated artificial blood vessel transplantation and coronary artery bypass grafting. In some other embodiments, only two of the three fixing portions are used during the operation, and the other one is left idle. Thus, when selecting a fixing portion for anastomosis of two cavities, more options can be provided. If one fixing portion is not suitable, it can be replaced with another, which is convenient for surgical operation. In addition, the three fixing portions can also be attached to different cavity-free structures, so that the three cavity-free structures are both easy to identify.

[0065] Preferably, the axis of the first connecting rod and the axis of the second connecting rod form an angle, or the axis of the first connecting rod is parallel to the axis of a part of the second connecting rod.

[0066] Preferably, the marking portion is located on the opposite side of the connection position between the first connecting rod and the second connecting rod.

[0067] In this solution, this layout method can not only prevent the marking portion from affecting the operation of the operator on the fixing portion, but also facilitate the identification, observation, or clamping of the marking portion.

[0068] Preferably, the fixing portion is olive-shaped, drop-shaped, jujube-shaped, bullet-shaped, egg-shaped, cylindrical, gourd-shaped, pear-shaped, ellipsoidal or spherical.

[0069] Preferably, the fixing part has a hollow chamber inside; or, the fixing part is a solid structure.

[0070] In this solution, for the hollow fixing part with a hollow chamber inside, the fixing part spontaneously restores its initial shape through its own elasticity or shape memory, without the need to use gas or liquid for expansion support and fixation. This setting can reduce the complexity of the operation, make the operation simple, and improve the safety of the operation. For the fixing part with a solid structure, it is suitable for a smaller-diameter cavity, improves the support strength of the fixing part, and can provide strong support and fixation for the cavity. The fixing device is not limited to the surgical scenario of maintaining fluid flow in the cavity, and can also be applied to surgical scenarios where it is not necessary to maintain fluid flow in the cavity, and can also be applied to a surgical scenario where one cavity needs to maintain fluid flow in the cavity and another cavity does not need to maintain fluid flow in the cavity.

[0071] Preferably, the contrast agent includes one or more of iohexol, iopamidol, iotalamic acid, diatrizoic acid, sodium iodide, ioflupane, meglumine diatrizoate, iopromide, iodixanol, barium sulfate, bismuth subcarbonate, iron powder, and hydroxyapatite, or includes copolymers or mixtures of these materials.

[0072] In this solution, adding a contrast agent to the fixing device can make it easier to identify and observe the fixing device under an X-ray imaging device. Especially during surgery, in the case where the fixing device cannot be found for some reason, the presence of the contrast agent can help the operator quickly find the fixing device.

[0073] Preferably, the fluorescent agent includes one or more of stilbene type, coumarin type, pyrazoline type, benzoxazine type, and phthalimide type, or includes copolymers or mixtures of these materials. Further preferably, the fluorescent agent includes one or more of zinc silicate, zinc cadmium sulfide, fluorescein, and morin.

[0074] In this solution, adding a fluorescent agent to the fixing device can make it easier to identify and observe the fixing device under ultraviolet light irradiation. Especially during surgery, in the case where the fixing device cannot be found for some reason, the presence of the fluorescent agent can help the operator quickly find the fixing device.

[0075] Preferably, the magnetic material includes at least one of metallic magnetic materials and non-metallic magnetic materials. The metallic magnetic materials are iron, cobalt, nickel, and alloys or intermetallic compounds containing these elements, and the non-metallic magnetic material is ferrite.

[0076] In this solution, adding a magnetic material to the fixing device can make it easier to identify and find the fixing device under the attraction of a magnet. Especially during surgery, in the case where the fixing device cannot be found for some reason, the presence of the magnetic material can help the operator quickly find the fixing device.

[0077] The positive and progressive effects of the present invention are as follows: The marking part can be located outside a microchannel or outside a non-channel structure, facilitating identification and observation. Especially in the field of anastomosis of microscopic or ultra-microscopic channels, the size of the channel is small and the size of the fixing part is even smaller, making it difficult to identify and observe. By providing the marking part, it is convenient for the operator to identify and observe, which is beneficial to the operation of the surgery, can shorten the operation time, and reduce the surgical risk. Or, the marking part is located at the position of the non-channel structure, so as to facilitate the operator to identify the corresponding non-channel structure, especially the microscopic non-channel structure, when multiple non-channel structures or channel structures coexist, thus facilitating the docking and suturing of the corresponding non-channel structure. Moreover, the fixing device can not only be applicable to more complex surgeries and more usage scenarios, but also reduce the number of purchased models and lower the treatment cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0078] Figure 1 FIG. is a schematic structural diagram of a fixing device provided in Embodiment 1 of the present invention.

[0079] Figure 2 is Figure 1 a schematic structural diagram of another perspective of the fixing device in FIG.

[0080] Figure 3 FIG. is a schematic structural diagram of another fixing device provided in Embodiment 1 of the present invention.

[0081] Figure 4 FIG. is a schematic structural diagram of another fixing device provided in Embodiment 1 of the present invention.

[0082] Figure 5 FIG. is a schematic structural diagram of another fixing device provided in Embodiment 1 of the present invention.

[0083] Figure 6 is Figure 5 a schematic structural diagram of another perspective of the fixing device in FIG.

[0084] Figure 7 FIG. is a schematic structural diagram of another fixing device provided in Embodiment 1 of the present invention.

[0085] Figure 8 FIG. is a schematic structural diagram of another fixing device provided in Embodiment 1 of the present invention.

[0086] Figure 9 FIG. is a schematic structural diagram of another fixing device provided in Embodiment 1 of the present invention.

[0087] Figure 10 FIG. is a schematic structural diagram of another fixing device provided in Embodiment 1 of the present invention.

[0088] Figure 11 Schematic structural diagram of another fixing device provided in Embodiment 1 of the present invention.

[0089] Figure 12 Schematic structural diagram of another fixing device provided in Embodiment 1 of the present invention.

[0090] Figure 13 Schematic structural diagram of another fixing device provided in Embodiment 1 of the present invention.

[0091] Figure 14 Schematic structural diagram of another fixing device provided in Embodiment 1 of the present invention.

[0092] Figure 15 It is Figure 14 Schematic diagram of the fixing device at the end face of the marking part in

[0093] Figure 16 Schematic structural diagram of another fixing device provided in Embodiment 1 of the present invention.

[0094] Figure 17 It is Figure 16 Schematic diagram of the fixing device at the end face of the marking part in

[0095] Figure 18 Schematic structural diagram of another fixing device provided in Embodiment 1 of the present invention.

[0096] Figure 19 It is Figure 18 Schematic diagram of the fixing device at the end face of the marking part in

[0097] Figure 20 Schematic structural diagram of another fixing device provided in Embodiment 1 of the present invention.

[0098] Figure 21 It is Figure 20 Schematic plan view of the fixing device in

[0099] Figure 22 Schematic structural diagram of another fixing device provided in Embodiment 1 of the present invention.

[0100] Figure 23 It is Figure 22 Schematic structural diagram of the fixing device from another perspective in

[0101] Figure 24 Schematic structural diagram of another fixing device provided in Embodiment 1 of the present invention.

[0102] Figure 25 It is Figure 24 Schematic plan view of the fixing device in

[0103] Figure 26Schematic diagram of another fixing device provided in Embodiment 1 of the present invention.

[0104] Figure 27 Schematic diagram of another fixing device provided in Embodiment 1 of the present invention.

[0105] Figure 28 Schematic diagram of another fixing device provided in Embodiment 1 of the present invention.

[0106] Figure 29 Schematic diagram of another fixing device provided in Embodiment 1 of the present invention.

[0107] Figure 30 It is Figure 29 Schematic diagram of another perspective of the fixing device in

[0108] Figure 31 Schematic diagram of another fixing device provided in Embodiment 1 of the present invention.

[0109] Figure 32 It is Figure 31 Schematic diagram of another perspective of the fixing device in

[0110] Figure 33 Schematic diagram of another fixing device provided in Embodiment 1 of the present invention.

[0111] Figure 34 Schematic diagram of another fixing device provided in Embodiment 1 of the present invention. [[ID=۳۷]]

[0112] Figure 35 Schematic diagram of another fixing device provided in Embodiment 1 of the present invention.

[0113] Figure 36 Schematic diagram of another fixing device provided in Embodiment 1 of the present invention.

[0114] Figure 37 Schematic diagram of another fixing device provided in Embodiment 1 of the present invention.

[0115] Figure 38 Schematic diagram of another fixing device provided in Embodiment 1 of the present invention.

[0116] Figure 39 Schematic diagram of another fixing device provided in Embodiment 1 of the present invention.

[0117] Figure 40 Schematic diagram of another fixing device provided in Embodiment 1 of the present invention.

[0118] Figure 41 Schematic diagram of another fixing device provided in Embodiment 1 of the present invention.

[0119] Figure 42 Schematic structural diagram of another fixing device provided in Embodiment 1 of the present invention.

[0120] Figure 43 Schematic structural diagram of another fixing device provided in Embodiment 1 of the present invention.

[0121] Figure 44 Schematic structural diagram of another fixing device provided in Embodiment 1 of the present invention.

[0122] Figure 45 Schematic structural diagram of another fixing device provided in Embodiment 1 of the present invention.

[0123] Figure 46 Schematic structural diagram of another fixing device provided in Embodiment 1 of the present invention.

[0124] Figure 47 Schematic structural diagram of another fixing device provided in Embodiment 1 of the present invention.

[0125] Figure 48 Schematic structural diagram of another fixing device provided in Embodiment 1 of the present invention.

[0126] Figure 49 Schematic structural diagram of another fixing device provided in Embodiment 1 of the present invention.

[0127] Figure 50 Schematic structural diagram of another fixing device provided in Embodiment 1 of the present invention.

[0128] Figure 51 Schematic structural diagram of another fixing device provided in Embodiment 1 of the present invention.

[0129] Figure 52 Schematic structural diagram of another fixing device provided in Embodiment 1 of the present invention.

[0130] Figure 53 Schematic cross-sectional view of a fixing device provided in Embodiment 1 of the present invention.

[0131] Figure 54 Another schematic cross-sectional view of the fixing device provided in Embodiment 1 of the present invention.

[0132] Figure 55 Another schematic cross-sectional view of the fixing device provided in Embodiment 1 of the present invention.

[0133] Figure 56 Schematic structural diagram of a fixing device provided in Embodiment 2 of the present invention.

[0134] Figure 57 ForFigure 56 Schematic cross-sectional view of the middle fixing device.

[0135] Figure 58 Schematic structural view of a fixing device provided in Embodiment 2 of the present invention.

[0136] Figure 59 is Figure 58 Schematic cross-sectional view of the middle fixing device.

[0137] Figure 60 Schematic structural view of a fixing device provided in Embodiment 2 of the present invention.

[0138] Figure 61 is Figure 60 Schematic cross-sectional view of the middle fixing device.

[0139] Figure 62 Schematic structural view of another fixing device provided in Embodiment 2 of the present invention.

[0140] Figure 63 Schematic structural view of another fixing device provided in Embodiment 2 of the present invention.

[0141] Figure 64 Schematic view of a fixing device provided in an embodiment of the present invention when used in an end-to-end anastomosis operation.

[0142] Figure 65 Schematic view of a fixing device provided in an embodiment of the present invention when used in an end-to-side anastomosis operation.

[0143] Figure 66 Schematic view of a fixing device provided in an embodiment of the present invention when used in a side-to-side anastomosis operation.

[0144] Figure 67 Schematic view of another fixing device provided in an embodiment of the present invention when used in an end-to-end anastomosis operation.

[0145] Figure 68 Schematic view of another fixing device provided in an embodiment of the present invention when used in an end-to-side anastomosis operation.

[0146] Figure 69 Schematic view of another fixing device provided in an embodiment of the present invention when used in a side-to-side anastomosis operation.

[0147] Description of the Reference Numerals

[0148] Fixing device 1, fixing part 10, marking part 20, rod body 30, neck 40, connecting rod 50, first connecting rod 61, second connecting rod 62, cavity 2. Detailed implementation manners

[0149] The present invention will be further described below by way of embodiments, but the present invention is not limited to the scope of the described embodiments accordingly.

[0150] Embodiment 1

[0151] This embodiment provides a fixing device 1 for easily identifying a target tissue during a surgical operation. The fixing device 1 for easily identifying a target tissue during a surgical operation includes a fixing part 10 and a marking part 20. The marking part 20 is arranged at one end of the fixing device 1 and is used to be at least partially located outside a microchannel or outside a non-channel structure for being identified. The marking part 20 can be located outside the microchannel or outside the non-channel structure, so as to be easily identified and observed. Especially in the field of anastomosis of microscopic or ultra-microscopic channels, the size of the channel is small, the size of the fixing part 10 is even smaller, and in addition, since a part of body fluids such as blood will flow out, the surgical field of view is not clear, and the fixing device 1 is difficult to be identified and observed. By providing the marking part 20 to mark the specific position of the fixing device 1 during the operation, it can be conveniently and easily identified and observed by the operator, that is, the target tissue is easily identified, which is beneficial to the operation of the surgery, and can shorten the operation time and reduce the surgical risk. Or, the marking part is located at the position of the non-channel structure, so as to facilitate the operator to identify the corresponding non-channel structure, especially a microscopic non-channel structure, in the case where a plurality of non-channel structures or channel structures exist simultaneously, so as to facilitate the docking suture of the non-channel structure. It should be noted that the target tissue includes a microchannel and a non-channel structure. The microchannel is a tissue with a hollow interior, such as blood vessels, lymphatic ducts, vas deferens, fallopian tubes, ureters, bile ducts, trachea, bronchi and other channels. The non-channel structure is a tissue with a solid interior, such as nerves, tendons, ligaments, etc.

[0152] The fixing part 10 is arranged at the other end of the fixing device 1 and is used to at least partially extend into the microchannel or to be attached to the non-channel structure. When the fixing part 10 extends into the channel, it can support and fix the channel, so that the channel returns to its original shape, which is convenient for the operator to perform anastomosis operations. The fixing part 10 can also be attached to the non-channel structure, so that the marking part 20 is located at the position of the non-channel structure, which is convenient for the operator to identify the corresponding non-channel structure, especially a microscopic non-channel structure, and perform a docking suture operation on the corresponding non-channel structure. In specific implementation, at the position of the non-channel structure to be treated, such as in the tissue areas of nerves, tendons, ligaments, etc., the fixing device can be clamped and fixed on the relevant non-channel structure through surgical instruments, so as to mark the corresponding non-channel structure of the surgical area, so as to be relatively easy to identify the corresponding non-channel structure in the case where a plurality of non-channel structures or channel structures exist simultaneously, thus facilitating the docking suture of relevant tissues.

[0153] Wherein, the above-mentioned one end and the other end refer to the positions of the fixing part 10 and the marking part 20 on the fixing device 1. The fixing part 10 and the marking part 20 are at two opposite positions of the fixing device 1. This position arrangement facilitates the insertion of the fixing part 10 into the cavity without being affected by the marking part 20, and the marking part 20 can also be easily identified and observed. Therefore, other positions that meet this requirement should also fall within the protection scope of the present invention, and the protection scope of the present invention should not be limited to the structural forms provided in the drawings.

[0154] The marking part 20 serves as a clamping part for being clamped. The marking part 20 can also serve as a clamping part to facilitate the operator to directly clamp it by hand or with other surgical instruments. Especially when removing the device, it is easier to safely remove the device by clamping the clamping part. In specific implementation, at least part of the marking part 20 is located outside the cavity, so that it can serve as a clamping part. On the one hand, this part located outside the cavity can avoid damaging the anastomosed cavity. On the other hand, the marking part 20 is the part of the fixing device 1 that is easy to identify, so it is convenient for the operator to observe and clamp.

[0155] As Figures 1 - 54 shown, the fixing device 1 further includes a rod body 30. The rod body 30 can serve as a connecting component between the fixing part 10 and the marking part 20, or at least part of the structure of the rod body 30 can also serve as the connection between the marking part and the fixing part. The rod body 30 can connect the fixing part 10 and the marking part 20, or at least part of the structure of the rod body 30 can serve as the marking part, so that the fixing device 1 can be configured according to requirements. When the rod body 30 can be easily identified and observed by the operator, or is convenient for the operator to clamp, there is no need to additionally provide a marking part or a clamping part; when the rod body 30 is not convenient for the operator to identify and observe, or is not convenient for the operator to clamp, a marking part 20 or a clamping part can be additionally provided.

[0156] As an implementation manner, as Figures 1 - 44 shown, both ends of the rod body 30 are respectively connected to the fixing part 10 and the marking part 20.

[0157] As another implementation manner, as Figures 45 - 52 shown, the rod body 30 is connected to the fixing part 10, and at least part of the structure of the rod body 30 serves as the marking part. Preferably, the end of the rod body 30 away from the fixing part 10 serves as the marking part. In an alternative embodiment, the middle part of the rod body 30 serves as the marking part.

[0158] For the above two implementation manners in which the rod body 30 connects the fixing part 10 and the marking part 20 and part of the structure of the rod body 30 serves as the marking part, the arrangement manner between the rod body 30 and the fixing part 10 and / or the marking part 20, as well as the structural form of the rod body 30 itself, etc. can all adopt the following methods.

[0159] AsFigures 1 - 8 , Figure 49 , Figure 50 and Figure 52 As shown in Figure 52 , the axis of the rod body 30 is coaxial with the axis of the fixing part 10; or as shown in Figures 9 - 48 Figures 9 - 48 and Figure 51 , the axis of the rod body 30 has an included angle with the axis of the fixing part 10. The axis of the rod body 30 and the axis of the fixing part 10 can be configured to be coaxial or have an included angle according to requirements, so as to facilitate the operator to put in and take out the fixing part 10 without being hindered by the cavity. Moreover, the connection angle between the rod body 30 and the marking part 20 or the clamping part can be set to any angle, so that the marking part 20 or the clamping part can be conveniently identified and observed by the operator, or conveniently clamped by the operator.

[0160] Furthermore, when the axis of the rod body 30 has an included angle with the axis of the fixing part 10, the connection position between the rod body 30 and the fixing part 10 is the end of the fixing part 10, or the middle part, or any position between the end and the middle part. The connection position between the rod body 30 and the fixing part 10 can also be selected according to requirements, so as to facilitate the operator to put in and take out the fixing part 10 without being hindered by the cavity.

[0161] In the axial direction of the rod body 30, the outer diameter of the rod body 30 is equal; or, in the axial direction of the rod body 30, the outer diameter of the rod body 30 is not equal. The outer diameter of the rod body 30 can be configured to be equal or not equal according to requirements, so as to facilitate the operator to identify and observe, or facilitate the operator to clamp. In addition, the rod body 30 itself can be a three-dimensional structure or a two-dimensional flat structure.

[0162] As Figures 1 - 25 , Figures 33 - 44 and Figures 51 - 52 shown, when the outer diameter of the rod body 30 is equal, the rod body 30 can have different forms. As shown in Figures 1 - 25 Figures 1 - 25 and Figures 51 - 52 , the rod body 30 is a three-dimensional equal-diameter structure, such as a cylindrical equal-diameter structure. As shown in Figures 33 - 44 Figures 33 - 44 , the rod body 30 is a two-dimensional equal-diameter structure, such as a flat equal-diameter structure.

[0163] As Figures 26 - 32 and Figures 45 - 50 shown, when the outer diameter of the rod body 30 is not equal, the rod body 30 can have various unequal-diameter structural forms. The rod body 30 with unequal outer diameter can be a three-dimensional unequal-diameter structure. As shown in Figures 26 - 30 Figures 26 - 30 and Figures 45 - 50 , along the direction away from the fixing part 10, the outer diameter of the rod body 30 gradually increases. As shown in Figure 31 Figure 31 and Figure 32As shown, the outer diameter of the middle part of the rod body 30 is larger than that of both ends, or the rod body 30 can also be called a special-shaped structure. Or, the rod body 30 with unequal outer diameters can also be a two-dimensional structure with unequal diameters. The outer diameter of the rod body 30 can be configured to be unequal through the above structural forms, and the corresponding structural form can be selected according to the usage requirements. When the size of the rod body 30 of the fixing device 1 is sufficient to be recognized and observed by the operator, the easily recognizable and observable part can be used as a marking part or a clamping part.

[0164] In specific implementation, when the rod body 30 connects the fixing part 10 and the marking part 20, the maximum outer diameter of the rod body 30 is not larger than the maximum outer diameter of the marking part 20, so as to facilitate the operator to put in and take out the fixing part without being hindered by the cavity during operation. In addition, the dimensional relationship between the rod body 30 and the fixing part 10 can be that the maximum outer diameter of the rod body 30 is smaller than the maximum outer diameter of the fixing part 10; it can also be that the rod body 30 has a dimensional part smaller than the maximum outer diameter of the fixing part 10, and at the same time has a dimensional part larger than or equal to the maximum outer diameter of the fixing part 10. As Figures 46 - 48 and Figure 50 shown, the fixing device 1 further includes a neck 40, and the neck 40 is connected between the fixing part 10 and the rod body 30. By providing a thinner neck between the fixing part 10 and the rod body 30, it is convenient for the operator to put in and take out the fixing part 10 without being hindered by the cavity during operation. In specific implementation, the extension length of the neck 40 can be configured according to requirements.

[0165] In specific implementation, as Figure 45 , Figure 49 , Figure 51 and Figure 52 shown, the rod body 30 and the fixing part 10 can be directly connected; as Figures 46 - 48 and Figure 50 shown, the rod body 30 and the fixing part 10 can also be indirectly connected through other components, such as indirectly connected through the neck 40.

[0166] As Figures 46 - 48 and Figure 50 shown, the maximum outer diameter of the neck 40 is not larger than the minimum outer diameter of the rod body 30.

[0167] As Figure 47 , Figure 48 and Figure 50 shown, the axis of the neck 40 is coaxial with the axis of the fixing part 10. Or, as Figure 46 shown, the axis of the neck 40 has an included angle with the axis of the fixing part 10.

[0168] As Figure 46 and Figure 50 shown, the axis of the neck 40 is coaxial with the axis of the rod body 30. Or, as Figure 47 and Figure 48As shown, the axis of the neck 40 forms an angle with the axis of the rod body 30.

[0169] The relative positions of the axis of the neck 40 with respect to the axis of the fixing part 10 and the axis of the rod body 30 can be configured according to requirements, thus facilitating the operation of the operator.

[0170] As a preferred embodiment, the maximum outer diameter of the marking part 20 is not less than the maximum outer diameter of the fixing part 10. In other areas of the marking part 20, it may also have a size smaller than the maximum outer diameter of the fixing part 10, which can be specifically set according to requirements. By adopting the above structural form, the marking part 20 is easier to be recognized and observed compared with the fixing part 10. Moreover, when the marking part 20 is used as a clamping part, the marking part 20 is easier to be clamped by the operator, thus facilitating the overall removal of the fixing device 1. Especially in the field of anastomosis of microscopic or ultra-micro channels, the size of the fixing part 10 needs to be adapted to the size of the channel. Therefore, the size of the fixing part 10 is small and difficult to be recognized and observed. By setting the marking part 20 with a relatively large size, it is convenient for the operator to recognize and observe, thereby shortening the operation time and reducing the operation risk.

[0171] As a preferred embodiment, at least one of the fixing part 10, the marking part 20, the rod body 30, and the neck 40 is set with a bright and eye-catching color. By configuring at least one of the fixing part 10, the marking part 20, the rod body 30, and the neck 40 with a bright and eye-catching color, it is convenient for the operator to recognize, observe, or clamp. The bright and eye-catching colors mainly include red, yellow, blue, orange, purple, green, etc. However, the bright and eye-catching colors are not limited to these listed colors. It can be understood that other colors that are convenient for recognition, observation, or clamping can also be selected.

[0172] In specific implementation, the marking part 20 has a different-color area, and the color of the different-color area is different from the colors of other areas of the fixing device 1. The marking part 20 adopts a more bright and eye-catching color, which is different from the colors of other areas of the fixing device 1, so that the marking part 20 is easier to be recognized and observed, and is easier to be clamped when used as a clamping part. Or, the fixing device 1 has a consistent color. The whole fixing device 1 can have a consistent bright and eye-catching color, so that the whole is easy to be recognized and observed, and is easier to be clamped when used as a clamping part.

[0173] In specific implementation, the marking part 20 of the fixing device 1 can also simultaneously have the above-mentioned outer diameter size relationship and the above-mentioned color situation. Thus, the marking part 20 is easier to be recognized and observed, and is easier to be clamped when used as a clamping part. Take Figure 51 the shown fixing device 1 as an example. The rod body 30 of this fixing device 1 has an equal diameter. A color, especially a bright and eye-catching color, can be set on the rod body 30 to be recognized and observed by the operator, and is easier to be clamped when used as a clamping part.

[0174] As a preferred embodiment, at least one of the fixing portion 10, the marking portion 20, the rod body 30, and the neck portion 40 contains a contrast agent, a fluorescent agent, or a magnetic material, so that this part is more easily recognizable and observable. Especially during surgery, when for some reason the fixing device cannot be found, containing the above components can help the operator quickly find the fixing device.

[0175] As a preferred embodiment, the contrast agent can be selected from one or more of iohexol, iopamidol, iothalamic acid, diatrizoic acid, sodium iodide, ioflupane, meglumine diatrizoate, iopromide, iodixanol, barium sulfate, bismuth subcarbonate, iron powder, and hydroxyapatite, or a copolymer or mixture including these materials. Adding a contrast agent to the fixing device can make the fixing device more easily recognizable and observable under X-ray imaging equipment. Especially during surgery, when for some reason the fixing device cannot be found, containing a contrast agent can help the operator quickly find the fixing device.

[0176] As a preferred embodiment, the fluorescent agent can be selected from one or more of stilbene type, coumarin type, pyrazoline type, benzoxazine type, and phthalimide type, or a copolymer or mixture including these materials. Among them, the fluorescent agent includes one or more of zinc silicate, zinc cadmium sulfide, fluorescein, and morin, as well as other similar fluorescent agents. Adding a fluorescent agent to the fixing device can make the fixing device more easily recognizable and observable under ultraviolet light irradiation. Especially during surgery, when for some reason the fixing device cannot be found, containing a fluorescent agent can help the operator quickly find the fixing device.

[0177] As a preferred embodiment, the magnetic material can be selected from at least one of metallic magnetic materials and non-metallic magnetic materials. The metallic magnetic materials are iron, cobalt, nickel, and alloys or intermetallic compounds containing these elements, and the non-metallic magnetic material is ferrite. Adding a magnetic material to the fixing device can make the fixing device more easily recognizable and found under the attraction of a magnet. Especially during surgery, when for some reason the fixing device cannot be found, containing a magnetic material can help the operator quickly find the fixing device.

[0178] As Figures 1 - 55 shown, in specific implementation, the marking portion 20 can adopt various structural forms according to requirements. These structures can be three-dimensional structures or planar structures, and can be regular structures or irregular structures. As long as the structural form can be conveniently recognized and observed by the operator, or has a shape that can be conveniently clamped by the operator. Some feasible embodiments will be listed below, but the scope of protection should not be limited to the following embodiments.

[0179] The marking portion 20 is in a structural form such as a two-dimensional flat structure or a three-dimensional solid structure.

[0180] When the marking portion 20 is a two-dimensional flat structure, such as Figures 33 - 36 As shown, the marking portion 20 is polygonal. Figure 33 As shown, the marking portion 20 is an octagon; Figure 34 As shown, the marking portion 20 is a square; Figure 35 As shown, the marking portion 20 is a diamond; Figure 36 As shown, the marking portion 20 is a triangle. In addition, the marking portion 20 can also be a rectangle, a hexagon, a trapezoid or other polygonal structures.

[0181] As well as Figure 37 As shown, the marking portion 20 is fan-shaped; Figure 38 As shown, the marking portion 20 is oval; Figure 39 As shown, the marking portion 20 is heart-shaped; Figure 40 As shown, the marking portion 20 is star-shaped; Figure 41 As shown, the marking portion 20 is circular.

[0182] When the marking portion 20 is a two-dimensional flat structure and the marking portion 20 is connected to the fixing portion 10 through a rod, as shown in FIG. Figures 33 - 41 As shown, the axis of the rod body 30 is located in the plane where the marking portion 20 is located. In an alternative embodiment, the axis of the rod body 30 is parallel to the plane where the marking portion 20 is located. Figure 42 As shown, there is an angle between the axis of the rod body 30 and the plane where the marking portion 20 is located. Preferably, the axis of the rod body 30 is perpendicular to the plane where the marking portion 20 is located.

[0183] like Figure 43 and Figure 44 As shown, the thickness of the marking portion 20 is not greater than the thickness of the rod body 30 .

[0184] When the marking portion 20 is a three-dimensional structure, such as Figures 1 - 32 As shown, the marking portion 20 is a solid of rotation or a polyhedron. Specifically, the solid of rotation can be spherical, ellipsoidal, cylindrical, conical, truncated cone, gourd-shaped, olive-shaped, pear-shaped, teardrop-shaped, jujube-shaped, bullet-shaped, egg-shaped, handle-shaped or Roman column-shaped. The polyhedron is a cube, a cuboid, a prism, a pyramid, a prism or a special-shaped polyhedron. The prism is a triangular prism, a quadrangular prism, a pentagonal prism or a hexagonal prism; the pyramid is a triangular pyramid, a quadrangular pyramid, a pentagonal pyramid or a hexagonal pyramid; the pyramid is a triangular pyramid, a quadrangular pyramid, a pentagonal pyramid or a hexagonal pyramid. It should be noted that there is no restriction on the number of edges of the prism, pyramid and pyramid, as long as it is convenient for identification and operation.

[0185] like Figure 4 、 Figure 8 and Figure 11As shown, the marking part 20 is frustum-shaped, and its end face is circular. As Figure 14 and Figure 15 shown, the marking part 20 is frustum-shaped, and its end face is elliptical. As Figure 1 , Figure 2 , Figure 5 and Figure 6 shown, the marking part 20 is pentagonal prism-shaped. As Figure 9 shown, the marking part 20 is hexagonal prism-shaped. As Figure 3 , Figure 7 and Figure 10 shown, the marking part 20 is hexagonal pyramid-shaped. As Figure 18 and Figure 19 shown, the marking part 20 is dodecagonal pyramid-shaped, and its end face is star-shaped. As Figure 12 shown, the marking part 20 is frustum of a quadrangular pyramid-shaped, and its end face is rectangular. As Figure 13 shown, the marking part 20 is frustum of a quadrangular pyramid-shaped, and its end face is square. As Figure 16 and Figure 17 shown, the marking part 20 is generally prism-shaped structure, and its end face is fan-shaped. As Figure 20 and Figure 21 shown, the marking part 20 is pear-shaped. Specifically, the outer contour of the marking part 20 is generally pear-shaped, and planes are also provided at its two opposite end faces. As Figure 22 and Figure 23 shown, the marking part 20 is handle-shaped. As Figure 24 and Figure 25 shown, the marking part 20 is Roman column-shaped. As Figure 26 shown, the marking part 20 is olive-shaped. As Figure 27 shown, the marking part 20 is gourd-shaped. As Figure 28 shown, the marking part 20 is spherical. As Figure 29 and Figure 30 shown, the marking part 20 is generally two butt-jointed triangular pyramid-shaped structures. As Figure 31 and Figure 32 shown, the marking part 20 is a special-shaped polyhedron.

[0186] In specific implementation, the marking part 20 of the above two-dimensional flat structure or three-dimensional solid structure and the rod body 30 of the two-dimensional flat structure or three-dimensional solid structure can be arbitrarily combined according to requirements. That is to say, the marking part 20 of the two-dimensional flat structure can be combined with the rod body 30 of the two-dimensional flat structure, or can be combined with the rod body 30 of the three-dimensional solid structure; the marking part 20 of the three-dimensional solid structure can be combined with the rod body 30 of the two-dimensional flat structure, or can be combined with the rod body 30 of the three-dimensional solid structure.

[0187] In specific implementation, the fixing part 10 can adopt various structural forms according to requirements. Some feasible implementation manners will be listed below, but the protection scope should not be limited to the following implementation manners.

[0188] The fixing part 10 can adopt various structural forms, such as Figures 1 - 4 shown, the fixing part 10 is in the shape of a Chinese date; as Figures 5 - 44 , Figure 62 and Figure 63 shown, the fixing part 10 is in the shape of an olive; as Figures 45 - 50 shown, the fixing part 10 is in the shape of a water droplet; as Figures 51 - 52 , the fixing part 10 is in the shape of a bullet head; in other embodiments, the fixing part 10 can also be in the shape of an egg, a cylinder, a gourd, a pear, an ellipsoid, a sphere or other shapes.

[0189] As Figure 53 and Figure 54 shown, the fixing part 10 has a hollow chamber inside. For the hollow fixing part 10 with a hollow chamber inside, the fixing part 10 spontaneously resumes its initial shape through its own elasticity or shape memory, without the need to use gas or liquid for expansion support and fixation. This setting can reduce the complexity of the operation, make the operation simple, and improve the safety of the operation. Further, as Figure 53 shown, the fixing part 10 has a through hollow chamber inside. During the anastomosis operation, the fluid in the cavity 2 can continue to flow through this through hollow cavity, which can solve the problem that the cavity wall retracts and collapses during the cavity suture process due to the interruption of the fluid flow inside the cavity, affecting the suture. As Figure 54 shown, the fixing part 10 is provided with an opening at the opposite end to the rod body 30. This opening communicates with the internal chamber, which can make the fixing part compress into a smaller volume when placed in or taken out of the cavity, facilitating the operation and reducing the damage to the cavity.

[0190] Or as Figure 55 shown, the fixing part 10 is a solid structure. For the solid fixing part 10, it is suitable for cavities with a smaller diameter, improving the support strength of the fixing part 10 and providing a strong support and fixation effect on the cavity.

[0191] It should be noted that the fixing device is not limited to the surgical scenario of maintaining fluid flow in the cavity, and can also be applied to surgical scenarios where it is not necessary to maintain fluid flow in the cavity, and can also be applied to a surgical scenario where one cavity needs to maintain fluid flow in the cavity and another cavity does not need to maintain fluid flow in the cavity. More specifically, for example, the anastomosis of two blood vessels does not require maintaining the blood flow in the blood vessels. Instead, the two blood vessels need to be clamped with instruments to stop bleeding and then an anastomosis operation is performed. This can ensure a clear surgical field, making it more conducive for the operator to suture the two blood vessels and reducing the difficulty of the surgical operation.

[0192] More than 10 outer contour structures of the above-mentioned fixing part, as well as solid or hollow structures, can also be arbitrarily combined with the marking part 20 of two-dimensional flat structure or three-dimensional solid structure, and the rod body 30 of two-dimensional flat structure or three-dimensional solid structure according to requirements.

[0193] Some feasible embodiments will be described below in conjunction with the accompanying drawings. However, those skilled in the art can understand the embodiments in other drawings according to the description and drawings in this embodiment.

[0194] As Figure 4 and Figure 55 shown, Figure 55 is Figure 4 a cross-sectional view of the fixing device 1 in. The fixing device 1 includes a fixing part 10, a rod body 30 and a marking part 20. The rod body 30 has an equal-diameter structure, and its two ends are respectively connected to the fixing part 10 and the marking part 20. The fixing part 10, the rod body 30 and the marking part 20 are all three-dimensional solid structures, and the three are coaxially arranged. The fixing part 10 is in the shape of a jujube and is a solid structure, and the marking part 20 is in the shape of a frustum of a cone.

[0195] As Figure 11 and Figure 54 shown, Figure 54 is Figure 11 a cross-sectional view of the fixing device 1 in. The fixing device 1 includes a fixing part 10, a rod body 30 and a marking part 20. The rod body 30 has an equal-diameter structure, and its two ends are respectively connected to the fixing part 10 and the marking part 20. The fixing part 10, the rod body 30 and the marking part 20 are all three-dimensional solid structures, and there is an angle between the axis of the fixing part 10 and the axis of the rod body 30, and the fixing part 10 and the marking part 20 are coaxial. The fixing part 10 is in the shape of an olive and has a hollow chamber, and the marking part 20 is in the shape of a frustum of a cone.

[0196] As Figure 41 shown, the fixing device 1 includes a fixing part 10, a rod body 30 and a marking part 20. The rod body 30 has an equal-diameter structure, and its two ends are respectively connected to the fixing part 10 and the marking part 20. The fixing part 10 is a three-dimensional solid structure, and the rod body 30 and the marking part 20 are both two-dimensional flat structures, and there is an angle between the axis of the fixing part 10 and the plane where the rod body 30 is located, and there is an angle between the axis of the fixing part 10 and the plane where the marking part 20 is located. The fixing part 10 is in the shape of an olive, and the marking part 20 is circular.

[0197] As Figure 42As shown in the figure, the fixing device 1 includes a fixing portion 10, a rod body 30, and a marking portion 20. The rod body 30 has a constant diameter structure, and its two ends are respectively connected to the fixing portion 10 and the marking portion 20. The fixing portion 10 is a three-dimensional structure, and both the rod body 30 and the marking portion 20 are two-dimensional flat structures. Moreover, there is an angle between the axis of the fixing portion 10 and the plane where the rod body 30 is located, and there is an angle between the axis of the fixing portion 10 and the plane where the marking portion 20 is located. The fixing portion 10 is olive-shaped, and the marking portion 20 is circular.

[0198] As Figure 45 shown in the figure, the fixing device 1 includes a fixing portion 10 and a rod body 30. The rod body 30 has a non-constant diameter structure, and its size gradually increases along the direction away from the fixing portion 10. The fixing portion 10 and the rod body 30 are three-dimensional structures, and there is an angle between the axis of the fixing portion 10 and the axis of the rod body 30. The fixing portion 10 is teardrop-shaped.

[0199] As Figure 49 shown in the figure, the fixing device 1 includes a fixing portion 10 and a rod body 30. The rod body 30 has a non-constant diameter structure, and its size gradually increases along the direction away from the fixing portion 10. The fixing portion 10 and the rod body 30 are three-dimensional structures, and the axis of the fixing portion 10 is coaxial with the axis of the rod body 30. The fixing portion 10 is teardrop-shaped.

[0200] As Figure 46 shown in the figure, the fixing device 1 includes a fixing portion 10, a neck portion 40, and a rod body 30. The fixing portion 10, the neck portion 40, and the rod body 30 are connected in sequence. The rod body 30 has a non-constant diameter structure, and its size gradually increases along the direction away from the fixing portion 10; the neck portion 40 has a constant diameter structure. The fixing portion 10, the neck portion 40, and the rod body 30 are three-dimensional structures, and there is an angle between the axis of the fixing portion 10 and the axis of the neck portion 40, and the axis of the neck portion 40 is coaxial with the axis of the rod body 30. The fixing portion 10 is teardrop-shaped.

[0201] As Figure 48 shown in the figure, the fixing device 1 includes a fixing portion 10, a neck portion 40, and a rod body 30. The fixing portion 10, the neck portion 40, and the rod body 30 are connected in sequence. The rod body 30 has a non-constant diameter structure, and its size gradually increases along the direction away from the fixing portion 10; the neck portion 40 has a constant diameter structure. The fixing portion 10, the neck portion 40, and the rod body 30 are three-dimensional structures, and the axis of the fixing portion 10 is coaxial with the axis of the neck portion 40, and there is an angle between the axis of the neck portion 40 and the axis of the rod body 30. The fixing portion 10 is teardrop-shaped.

[0202] As Figure 50As shown, the fixing device 1 includes a fixing part 10, a neck part 40 and a rod body 30, and the fixing part 10, the neck part 40 and the rod body 30 are connected in sequence. The rod body 30 has a non-uniform diameter structure, and its size gradually increases along the direction away from the fixing part 10; the neck part 40 has a uniform diameter structure. The fixing part 10, the neck part 40 and the rod body 30 are three-dimensional structures, and the axis of the fixing part 10 is coaxial with the axis of the neck part 40, and the axis of the neck part 40 is coaxial with the axis of the rod body 30. The fixing part 10 is in the shape of a water droplet.

[0203] Through any one of the fixing devices 1 in this embodiment, it can be applied to anastomosis surgeries of microscopic or ultra-microscopic channels, such as anastomosis of blood vessels, lymphatic ducts, vas deferens, fallopian tubes, ureters, bile ducts, trachea, bronchi and other channels, and can perform anastomosis surgeries of the same type of channels or different types of channels. For example, in the treatment of Alzheimer's disease, clinically it is found that anastomosing the lymphatic duct to the adjacent vein will improve the circulation performance of lymph fluid in the lymphatic duct, and the curative effect on Alzheimer's disease is very significant. The operator can use surgical instruments to clamp the fixing part 10 and place the fixing part 10 in the channel 2. After the surgical instruments are released, the fixing part 10 made of elastic material or shape memory material can rebound and support the channel 2, facilitating the operator to perform subsequent anastomosis operations. When a part of the suture is completed, the fixing part 10 can be taken out through the unsutured channel gap by using the rod body 30 or the marking part 20 with a relatively larger size, and the subsequent suture can be continued. Therefore, when performing anastomosis surgery on microscopic or ultra-microscopic channels, the fixing device 1 can avoid the collapse and adhesion of the tube wall, which affects the suture, and is convenient for identification, observation and clamping operations, thereby providing appropriate anastomosis conditions, quickly expanding the channel 2, assisting surgical treatment, reducing tube wall damage, shortening the suture time, reducing the suture risk, improving the treatment efficiency, and effectively improving the patency rate of the postoperative channel.

[0204] Embodiment 2

[0205] This embodiment provides a fixing device 1 that is easy to identify target tissues in surgical operations. The difference between the fixing device 1 in this embodiment and the fixing device 1 in Embodiment 1 is that the other end of the fixing device 1 in this embodiment has a plurality of fixing parts 10, and the plurality of fixing parts 10 are used to extend into different micro-channels 2 or be attached to different non-channel structures, and the plurality of fixing parts 10 are connected by a connecting part. The fixing device 1 is configured with a plurality of fixing parts 10 and connected by a connecting part, so that the plurality of fixing parts 10 on one fixing device 1 can extend into a plurality of channels 2 of the same type or a plurality of channels 2 of different types, and perform support and fixation, thereby facilitating the operation of anastomosis surgery. Or, the plurality of fixing parts 10 can also be attached to different non-channel structures to connect with the non-channel structures, thereby facilitating the operation of the docking suture of the corresponding non-channel structures.

[0206] The connecting portion includes at least one connecting rod 50, and the fixing portion 10 is disposed at the extending end of the connecting rod 50. The extending end refers to the free end of the connecting rod 50. For example, for the connecting rod 50 shown in Figures 56 - 61 both ends of the connecting rod 50 are free ends, and the fixing portion 10 can be respectively disposed thereon; for the connecting rod 50 shown in Figure 62 and Figure 63 the connecting rods 50 are connected to each other and form three free ends. The extending end of the connecting rod 50 can serve as the setting position of the fixing portion 10, so that the fixing portion 10 is located at the end of the connecting rod 50, facilitating the fixing portion 10 to extend into the cavity 2 or facilitating attachment to a non-cavity structure. Specifically, multiple extending ends can be formed via at least one connecting rod 50, and each of these extending ends can serve as the setting position of the fixing portion 10.

[0207] As Figures 56 - 63 shown, the maximum outer diameter of the connecting rod 50 connected to the fixing portion 10 is not greater than the maximum outer diameter of the corresponding fixing portion 10.

[0208] As Figures 56 - 63 shown, the axis of the fixing portion 10 is coaxial with the axis of the connecting rod 50 connected thereto, and in an alternative embodiment, it can also be set to have an included angle. The axis of the fixing portion 10 can be configured to be coaxial with the axis of the connecting rod 50 connected thereto or have an included angle according to the usage requirements, so as to adapt to various anastomosis requirements between the same or different cavities 2. The fixing device 1 can be applied to more usage scenarios, not only for blood vessels, but also for cavities 2 in many fields such as lymphatic ducts, vas deferens, fallopian tubes, ureters, bile ducts, tracheas, bronchi, etc. Moreover, it can be applied to the usage scenarios of the same cavity 2 (such as anastomosis of blood vessels) and also to the usage scenarios of different cavities 2 (such as anastomosis of blood vessels and lymphatic vessels).

[0209] In specific implementation, according to the surgical requirements, the connecting rod 50 can be a straight rod or a curved rod. Each fixing portion 10 can be coaxial with the axis of the connecting rod 50 connected thereto, or have an included angle, or some of the multiple fixing portions 10 are coaxial with the axis of the connecting rod 50 connected thereto, and some have an included angle with the axis of the connecting rod 50 connected thereto. As Figures 56 - 63 shown, each fixing portion 10 is coaxial with the axis of the connecting rod 50 connected thereto.

[0210] The sizes of multiple fixing portions 10 are partially the same, or all the same, or all different. Specifically, as Figures 56 - 59 shown, the sizes of two fixing portions 10 are different. Or, as Figure 60 and Figure 61 shown, the sizes of two fixing portions 10 are the same. As Figure 62 and Figure 63As shown, two of the three fixing parts 10 have the same size, and the remaining one fixing part 10 has a size smaller than these two fixing parts 10. The sizes of the multiple fixing parts 10 can be configured to be partially the same, or all the same, or all different according to the size of the cavity 2, so as to adapt to the size requirements of various cavities 2. In the case where there are cavities 2 of multiple sizes that need to be supported and fixed during an operation, if the fixing device 1 of this solution is adopted, the larger fixing parts 10 can be selected according to the size of the cavity 2 to support and fix the cavity 2 with a larger size, and the smaller fixing parts 10 can support and fix the cavity 2 with a smaller size. In this way, the types of the purchased fixing devices 1 can be reduced by at least half. In the case where there are only two types of cavity 2 with different diameters, only one type of fixing device 1 needs to be purchased. This can reduce the manufacturing molds by half and reduce the number of purchased types by half, which greatly reduces the manufacturing cost of the product and also reduces the treatment cost of the patient. The fixing device 1 can also support and fix two or more cavities 2 with different diameters simultaneously using one fixing device 1, instead of separately selecting different fixing devices 1 for two or more cavities 2 with different diameters, reducing the number of instruments required during the operation and saving the treatment cost.

[0211] It should be noted that the fixing device 1 of this solution can be applied to more complex operations. For example, in the operation of finger replantation, it is necessary to anastomose multiple blood vessels with different diameters. By using the fixing device 1 with fixing parts 10 of different sizes in this solution, the larger fixing parts 10 can be used to support and fix the cavity 2 with a larger diameter for anastomosing the large cavity 2 first, and then the smaller fixing parts 10 can be used to support and fix the cavity 2 with a smaller diameter for anastomosing the small cavity 2. Therefore, the number of instruments used can be reduced by at least half, reducing the medical cost.

[0212] As an implementation manner, as Figures 56 - 59 、 Figure 62 and Figure 63 shown, the fixing device 1 further includes a rod body 30, and both ends of the rod body 30 are respectively connected to the connecting part and the marking part 20.

[0213] As another implementation manner, as Figure 60 and Figure 61 shown, the rod body 30 is connected to the connecting part, and at least part of the structure of the rod body 30 serves as the marking part 20. Preferably, the end of the rod body 30 away from the fixing part 10 serves as the marking part 20. In an alternative embodiment, the middle part of the rod body 30 serves as the marking part 20.

[0214] During specific implementation, the rod body 30 and the connecting part can be directly connected; the rod body 30 and the connecting part can also be indirectly connected through other components, such as indirectly connected through the neck 40.

[0215] When the fixing device 1 has a plurality of fixing parts 10 and the plurality of fixing parts 10 are connected by a connecting part, the rod body 30 can connect the marking part 20 and the connecting part, or at least part of the structure of the rod body 30 can serve as the marking part 20, so that the fixing device 1 can be configured according to requirements. When the rod body 30 can be easily recognized and observed by the operator, or can be easily clamped by the operator, there is no need to additionally provide a marking part 20 or a clamping part; when the rod body 30 is not convenient for the operator to recognize and observe, or is not convenient for the operator to clamp, a marking part 20 or a clamping part can be additionally provided.

[0216] As Figures 56 - 63 shown, the axis of the rod body 30 has an included angle with the axis of the connecting part. Preferably, the axis of the rod body 30 is perpendicular to the axis of the connecting part. In other embodiments, the axis of the rod body 30 can be coaxial or parallel with the axis of the connecting part, or coaxial or parallel with the axis of a part of the connecting part or have an included angle therewith. The relative position of the axis of the rod body 30 with respect to the axis of the connecting part or with respect to the axis of a part of the connecting part can be configured according to requirements, so as to facilitate the operation of the operator.

[0217] The fixing device 1 further includes a neck part 40, and the neck part 40 is connected between the connecting part and the rod body 30.

[0218] In specific implementation, the number of the fixing parts 10 can be specifically selected according to requirements. Embodiments in which the fixing parts 10 are divided into two and three will be provided below, but the protection scope of the present invention should not be limited to the following embodiments.

[0219] As Figures 56 - 61 shown, the other end of the fixing device 1 has two fixing parts 10, the connecting part is a connecting rod 50, and the two fixing parts 10 are arranged at two opposite extending ends of the connecting rod 50. The connecting part can connect the two fixing parts 10, and the two fixing parts 10 can respectively extend into two same or different kinds of cavities 2, and can support and fix the two cavities 2. Or the two fixing parts 10 can be respectively attached to different non-cavity structures, so that the two non-cavity structures are both easy to be recognized.

[0220] As Figures 56 - 61 shown, the marking part 20 is located on the opposite side of the fixing part 10 and corresponds to the position between the two fixing parts 10. The marking part 20 is located at one end of the fixing device 1, and the two fixing parts 10 are located at the other end of the fixing device 1, that is, the marking part 20 is located on the opposite side of the fixing part 10 and corresponds to the position between the two fixing parts 10. This layout method can not only avoid the marking part 20 from affecting the operation of the operator on the fixing part 10, but also facilitate the recognition, observation or clamping of the marking part 20.

[0221] As Figure 62 and Figure 63As shown, the other end of the fixing device 1 has three fixing parts 10. The connecting part includes a first connecting rod 61 and a second connecting rod 62. Both ends of the first connecting rod 61 serve as extending ends. One end of the second connecting rod 62 is connected to the first connecting rod 61, and the other end serves as an extending end. The three fixing parts 10 are respectively arranged on the corresponding extending ends. By configuring the three fixing parts 10, it is possible to support and fix three channels 2 simultaneously, such as being applied to vascular surgical operations such as bifurcated artificial blood vessel transplantation and coronary artery bypass grafting. In some other embodiments, only two of the three fixing parts 10 are used during the operation, and the other one is left idle. Thus, when selecting a fixing part 10 for anastomosis of two channels 2, more selectivity can be provided. If one fixing part is not suitable, it can be replaced with another, which is convenient for surgical operation. In addition, the three fixing parts 10 can also be attached to different non-channel structures, so that the three non-channel structures are all easy to identify.

[0222] As Figure 62 and Figure 63 shown, the axis of the first connecting rod 61 and the axis of the second connecting rod 62 have an included angle. In other embodiments, the axis of the first connecting rod 61 is parallel to the axis of a partial structure of the second connecting rod 62.

[0223] As Figure 62 and Figure 63 shown, the marking part 20 is located on the opposite side of the connection position between the first connecting rod 61 and the second connecting rod 62. This layout method can not only avoid the marking part 20 affecting the operator's operation of the fixing part 10, but also facilitate the identification, observation, or clamping of the marking part 20.

[0224] Specifically, the multiple fixing parts 10 can all be solid structures, or at least one of them has a hollow chamber inside; the connecting part can be a solid structure or have a hollow chamber inside. As Figures 56 - 61 shown, both of the two fixing parts 10 and the connecting part have hollow chambers, and the hollow chambers of the two fixing parts 10 are communicated through the hollow chamber of the connecting part.

[0225] For the fixing device 1 in this embodiment, the outer contour form of the fixing part 10, and whether it has a hollow chamber or is a solid structure inside can adopt any one of the implementation manners in the above-mentioned embodiment 1; the rod body 30 can have a uniform diameter or a non-uniform diameter, and can be a three-dimensional structure or a two-dimensional flat structure, adopting any one of the implementation manners in the above-mentioned embodiment 1; the two-dimensional flat structure or three-dimensional structure of the marking part 20 can adopt any one of the implementation manners in the above-mentioned embodiment 1; the connecting part is similar to the fixing part 10, marking part 20, rod body 30 or neck 40 in Embodiment 1, can be set with a bright and eye-catching color, and / or contain a developer, fluorescent agent or magnetic material, and can adopt any one of the implementation manners in the above-mentioned embodiment 1; and, the combination manner of the fixing part 10, connecting part and rod body 30, the combination manner of the fixing part 10, connecting part, rod body 30 and marking part 20, the combination manner of the fixing part 10, connecting part, neck 40 and rod body 30, and the combination manner of the fixing part 10, connecting part, neck 40, rod body 30 and marking part 20 can also adopt any one of the implementation manners in the above-mentioned embodiment 1 according to requirements. The scope of protection should not be limited to the manner provided in the embodiment. The following will be combined with Figures 56 - 63 , and further illustrate some specific implementation manners. As Figures 56 - 59 shown, the fixing device 1 includes two fixing parts 10, a connecting rod 50, a rod body 30 and a marking part 20. The two fixing parts 10 are of different sizes, and both fixing parts 10 are coaxially connected to the connecting rod 50. The rod body 30 has a uniform diameter structure, and its two ends are respectively connected to the connecting rod 50 and the marking part 20. The axis of the rod body 30 has an angle with the axis of the connecting rod 50, and the axis of the rod body 30 is coaxial with the axis of the marking part 20. The fixing part 10, connecting rod 50, rod body 30 and marking part 20 are all three-dimensional structures, and both fixing parts 10 are olive-shaped, where Figure 56 and Figure 57 the marking part 20 in Figure 58 and Figure 59 is a cube,

[0226] As [[ID=??]] Figure 60 and Figure 61 shown, the fixing device 1 includes two fixing parts 10, a connecting rod 50 and a rod body 30. The two fixing parts 10 are of equal size, and both fixing parts 10 are coaxially connected to the connecting rod 50. The rod body 30 has a non-uniform diameter structure, and its size gradually increases along the direction away from the fixing part 10. The axis of the rod body 30 has an angle with the axis of the connecting rod 50. The fixing part 10, connecting rod 50 and rod body 30 are all three-dimensional structures, and both fixing parts 10 are olive-shaped.

[0227] As Figure 62 and Figure 63As shown, the fixing device 1 includes three fixing parts 10, a first connecting rod 61, a second connecting rod 62, a rod body 30, and a marking part 20. Fixing parts 10 are respectively provided at two opposite extending end portions of the first connecting rod 61. One end of the second connecting rod 62 is connected to the middle position of the first connecting rod 61, and a fixing part 10 is provided at the other end. The axes of the first connecting rod 61 and the second connecting rod 62 are coplanar. One end of the rod body 30 is connected to the connection position of the first connecting rod 61 and the second connecting rod 62, and the other end of the rod body 30 is connected to the marking part 20. The fixing part 10, the first connecting rod 61, the second connecting rod 62, the rod body 30, and the marking part 20 are all three-dimensional structures. The three fixing parts 10 are all olive-shaped, where Figure 62 the marking part 20 in Figure 63 is egg-shaped,

[0228] For any one of the fixing devices 1 provided in the above-mentioned Embodiment 1 and Embodiment 2, it can be applied to end-to-end anastomosis surgery, end-to-side anastomosis surgery, and side-to-side anastomosis surgery. As Figures 64 - 69 shown, taking the fixing device 1 provided in Embodiment 1 as an example, the fixing parts 10 of two fixing devices 1 respectively extend into two same or different kinds of cavities 2, where Figures 64 - 66 , the fixing part 10 is water-drop-shaped, Figures 67 - 69 shown, the fixing part 10 is olive-shaped. As Figure 64 and Figure 67 shown, the fixing parts 10 of two fixing devices 1 respectively extend into the ends of two cavities 2. As Figure 65 and Figure 68 shown, one of the fixing parts 10 of two fixing devices 1 extends into the end of one cavity 2, and the other extends into the side of the other cavity 2. As Figure 66 and Figure 69 shown, the fixing parts 10 of two fixing devices 1 respectively extend into the sides of two cavities 2.

[0229] Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that this is only for illustration. The protection scope of the present invention is defined by the appended claims. Without departing from the principles and essence of the present invention, those skilled in the art can make various changes or modifications to these embodiments, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A fixing device for easily identifying target tissues during surgical operations, characterized in that, The fixing device includes a marking part and a fixing part. The marking part is arranged at one end of the fixing device and is used to be at least partially located outside the microchannel or outside the non-channel structure for identification.

2. The fixing device for easily identifying target tissue during a surgical operation as described in claim 1, wherein The fixing part is arranged at the other end of the fixing device and is used to at least partially extend into the microchannel or to be attached to the non-channel structure; and / or, the marking part serves as a clamping part for being clamped; and / or, the fixing device further includes a rod body, both ends of the rod body are respectively connected to the fixing part and the marking part; or, the rod body is connected to the fixing part, and at least part of the structure of the rod body serves as the marking part.

3. The fixing device for easily identifying target tissue during a surgical operation according to claim 1, wherein The maximum outer diameter of the marking part is not less than the maximum outer diameter of the fixing part; and / or, at least one of the fixing part, the marking part, and the rod body is set in a bright and eye-catching color; preferably, the color includes but is not limited to at least one of red, yellow, blue, orange, purple, and green; and / or, the marking part has a differently colored area, and the color of the differently colored area is different from the color of other areas of the fixing device; or, the fixing device has a consistent color; and / or, at least one of the fixing part, the marking part, and the rod body contains a developer, a fluorescent agent, or a magnetic material; and / or, the marking part is a two-dimensional flat structure or a three-dimensional solid structure.

4. The fixing device for easily identifying a target tissue during a surgical operation according to claim 3, characterized in that, When the marking part is a two-dimensional flat structure, the marking part is circular, elliptical, fan-shaped, polygonal, heart-shaped, or star-shaped; further preferably, the polygon is square, rectangular, triangular, hexagonal, octagonal, rhombic, or trapezoidal; Preferably, when the marking part is a two-dimensional flat structure and the marking part is connected to the fixing part through a rod body, the axis of the rod body is located in the plane where the marking part is located, or is parallel to the plane where the marking part is located, or has an included angle; further preferably, the thickness of the marking part is not greater than the thickness of the rod body; or, when the marking part is a three-dimensional solid structure, the marking part is a solid of revolution or a polyhedron; further preferably, the solid of revolution is spherical, ellipsoidal, cylindrical, conical, frustum-shaped, gourd-shaped, olive-shaped, pear-shaped, water-drop-shaped, jujube-shaped, bullet-shaped, egg-shaped, handle-shaped, or Roman-column-shaped; the polyhedron is cube-shaped, cuboid-shaped, prismatic, pyramidal, frustum-shaped, or irregular polyhedron.

5. The fixing device for easily identifying target tissues during a surgical operation according to claim 2, characterized in that, The axis of the rod body is coaxial with the axis of the fixing part or has an included angle; Preferably, when the axis of the rod body has an included angle with the axis of the fixing part, the connection position of the rod body and the fixing part is the end of the fixing part, or the middle part, or any position between the end and the middle part; and / or, in the axial direction of the rod body, the outer diameter of the rod body is equal or unequal; Preferably, when the outer diameter of the rod body is unequal, the outer diameter of the middle part of the rod body is greater than the outer diameters of both ends; or, along the direction away from the fixing part, the outer diameter of the rod body gradually increases; or, the rod body is of special shape; and / or, the maximum outer diameter of the rod body is not greater than the maximum outer diameter of the marking part.

6. The fixing device for easily identifying target tissue during a surgical operation according to claim 2, wherein The fixing device further includes a neck, and the neck is connected between the fixing part and the rod body; Preferably, the maximum outer diameter of the neck is not greater than the minimum outer diameter of the rod body; and / or, the axis of the neck is coaxial with the axis of the fixing part, or has an included angle with the axis of the fixing part; and / or, the axis of the neck is coaxial with the axis of the rod body, or has an included angle with the axis of the rod body.

7. The fixing device for easily identifying a target tissue during a surgical operation according to claim 1, characterized in that, The other end of the fixing device has a plurality of fixing parts, and the plurality of fixing parts are used to extend into different micro-channels or be attached to different non-channel structures, and the plurality of fixing parts are connected by a connecting part; Preferably, the connecting part includes at least one connecting rod, and the fixing part is arranged at the extending end of the connecting rod; Further preferably, the maximum outer diameter of the connecting rod connected to the fixing part is not greater than the maximum outer diameter of the corresponding fixing part; and / or, the axis of the fixing part is coaxial with the axis of the connecting rod connected thereto, or has an included angle; Preferably, the sizes of the plurality of fixing parts are partially the same, or all the same, or all different; Preferably, the fixing device further includes a rod body, and the two ends of the rod body are respectively connected to the connecting part and the marking part; or, the rod body is connected to the connecting part, and at least part of the structure of the rod body serves as the marking part; Further preferably, the axis of the rod body is coaxial with, parallel to or has an included angle with the axis of the connecting part or the axis of a part of the connecting part; and / or, the fixing device further includes a neck, and the neck is connected between the connecting part and the rod body.

8. The fixation device for easily identifying a target tissue during a surgical operation according to claim 7, wherein, The other end of the fixing device has two such fixing parts, the connecting part is a connecting rod, and the two fixing parts are arranged at two opposite extending ends of the connecting rod; Preferably, the marking part is located on the opposite side of the fixing part and corresponds to the position between the two fixing parts.

9. The fixing device for easily identifying a target tissue during a surgical operation according to claim 7, characterized in that, The other end of the fixing device has three such fixing parts, the connecting part includes a first connecting rod and a second connecting rod, the two ends of the first connecting rod serve as extending ends, one end of the second connecting rod is connected to the first connecting rod, and the other end serves as an extending end, and the three fixing parts are respectively arranged at the corresponding extending ends; Preferably, the axis of the first connecting rod has an included angle with the axis of the second connecting rod, or the axis of the first connecting rod is parallel to the axis of a part of the second connecting rod; Preferably, the marking part is located on the opposite side of the connection position of the first connecting rod and the second connecting rod.

10. The fixing device for easily identifying target tissue in a surgical operation according to any one of claims 1-9, characterized in that, The fixing part is olive-shaped, drop-shaped, jujube-shaped, bullet-shaped, egg-shaped, cylindrical, gourd-shaped, pear-shaped, ellipsoidal or spherical; and / or, the fixing part has a hollow chamber inside; or, the fixing part is a solid structure; and / or, at least one of the fixing part, the marking part, the rod body, the connecting part, and the neck is set in a bright and eye-catching color; preferably, the color includes and is not limited to at least one of red, yellow, blue, orange, purple, and green; Further preferably, at least one of the fixing part, the marking part, the rod body, the connecting part, and the neck contains a developer, a fluorescent agent, or a magnetic material; More preferably, the developer includes one or more of iohexol, iopamidol, iotalamic acid, diatrizoic acid, sodium iodide, ioflupane, meglumine diatrizoate, iopromide, iodixanol, barium sulfate, bismuth subcarbonate, iron powder, and hydroxyapatite, or includes a copolymer or mixture of these materials; More preferably, the fluorescent agent includes one or more of stilbene type, coumarin type, pyrazoline type, benzoxazine type, and phthalimide type, or includes a copolymer or mixture of these materials; Even more preferably, the fluorescent agent includes one or more of zinc silicate, zinc cadmium sulfide, fluorescein, and morin; More preferably, the magnetic material includes at least one of a metallic magnetic material and a non-metallic magnetic material. The metallic magnetic material is iron, cobalt, nickel, and an alloy or intermetallic compound containing these elements, and the non-metallic magnetic material is ferrite.

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