Tissue ligation ring

Abstract

The invention provides a tissue loop ligature ring which comprises an elastic ring and an auxiliary component, the elastic ring is used for being connected to the auxiliary component, a part of structure of the elastic ring is used for forming an expandable loop ligature space, and when the loop ligature space shrinks to the minimum, the elastic ring stores elastic potential energy. When the tissue ligation ring is used for ligation on a target tissue such as an internal hemorrhoid tissue, the target tissue is partially located in the ligation space, and the elastic ring still has elastic potential energy when the elastic ring shrinks to the minimum in the ligation space, so that the tissue ligation ring can continuously apply acting force to the tissue; the target tissue is completely necrotic or basically completely necrotic and automatically falls off, so that the area of an ulcer surface formed on the body of the patient when the target tissue falls off is favorably reduced, and even the ulcer surface is not formed on the body of the patient.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and particularly relates to a tissue ligation ring. Background Art

[0002] Hemorrhoids are a common anorectal disease, which are divided into three categories: internal hemorrhoids, external hemorrhoids, and mixed hemorrhoids. Among them, the general treatment method for internal hemorrhoids is hemorrhoid ligation, that is, an elastic silk thread or rubber band is used to ligate the root of the internal hemorrhoid tissue, and the constricting force generated by the ligation is used to make the internal hemorrhoid tissue ischemic, and then atrophy and fall off.

[0003] When using an elastic silk thread to ligate the internal hemorrhoid tissue, the doctor can control the tightening force of the silk thread and then tie a knot. As the internal hemorrhoid tissue atrophies, the ligation ring formed by the elastic thread further shrinks, causing the elasticity of the elastic thread to gradually disappear. Regardless of the ligation force at the initial stage of ligation, the ligation loop formed by the elastic thread must have a certain circumference. This results in that when the elastic thread no longer has elastic deformation, the ligation loop still has a certain ligation space and cannot provide a force to the internal hemorrhoid tissue. On the one hand, this is not conducive to the complete necrosis and shedding of the internal hemorrhoid tissue. On the other hand, when the internal hemorrhoid tissue falls off, the tissue cannot close and a large ulcer surface is formed on the patient's body.

[0004] When using a rubber band to ligate the internal hemorrhoid tissue, the outer diameter of the rubber band is generally 5 mm and the inner diameter is 2 mm. In practice, the inner diameter of the rubber band cannot be infinitely reduced because any elastic material has a tolerable deformation rate. When the deformation rate is too large, the elastic material will be torn. If the inner diameter of the rubber band is too small, for example, less than 1.5 mm, when using the rubber band to ligate the internal hemorrhoid tissue, the rubber band is overstretched, resulting in an actual deformation rate greater than the tolerable deformation rate of the rubber band material, causing the rubber band to break. That is to say, the inner diameter of the rubber band used for ligating internal hemorrhoids is at least 1.5 mm. Then, when the internal hemorrhoid tissue shrinks to the point where the rubber band has no elastic deformation, the diameter of the internal hemorrhoid tissue is at least 1.5 mm. After that, the internal hemorrhoid tissue is no longer affected by the constricting force of the rubber band. This is also not conducive to the complete necrosis and shedding of the internal hemorrhoid tissue, and when the internal hemorrhoid tissue falls off, the tissue cannot close and a large ulcer surface is formed on the patient's body, and the diameter of the ulcer surface is at least 1.5 mm. In addition, the rubber band is prone to slipping. Summary of the Invention

[0005] The purpose of the present invention is to provide a tissue ligation ring, aiming to provide a constricting force to the tissue throughout the process of ligating on the target tissue.

[0006] To achieve the above object, the present invention provides a tissue ligation ring, which includes an elastic ring and an auxiliary component. The elastic ring is connected to the auxiliary component, and a part of the structure of the elastic ring is used to form a expandable and contractible ligation space; the elastic ring and the auxiliary component cooperate to form an elastic force that continuously contracts the ligation space, and enables the elastic ring to still have elastic potential energy when the ligation space shrinks to the minimum.

[0007] Optionally, the elastic ring is threaded through the auxiliary component.

[0008] Optionally, two engaging holes are provided on the auxiliary component and are arranged at intervals, and each engaging hole penetrates through the auxiliary component;

[0009] The elastic ring passes through the two engaging holes, wraps around the auxiliary component, and stores elastic potential energy;

[0010] The elastic ring is used to jointly form the ligation space with at least a part of the surface on one side of the auxiliary component.

[0011] Optionally, the auxiliary component is in an arc structure, and the convex surface of the auxiliary component is used to jointly form the ligation space with the elastic ring.

[0012] Optionally, the auxiliary component is a sheet-like plate body; or, the auxiliary component is an annular structure wound by a wire; or, an anti-slip structure is provided on the surface of the auxiliary component for forming the ligation space.

[0013] Optionally, the auxiliary component is a sheet-like plate body;

[0014] The auxiliary component is provided with an engaging hole and a guiding hole, and both the engaging hole and the guiding hole penetrate through the auxiliary component; a part of the elastic ring is threaded through the engaging hole to form a positioning connection with the auxiliary component, and another part of the elastic ring passes through the guiding hole and is used to form the ligation space.

[0015] Optionally, the auxiliary component is provided with a through guiding hole, and the auxiliary component has a first end and a second end that are opposite to each other in the axial direction of the guiding hole;

[0016] A part of the elastic ring is strip-shaped and threaded through the guiding hole. One end of the elastic ring is fixedly connected to the auxiliary component, and the other end is exposed at the second end, and stores elastic potential energy; the part of the elastic ring exposed at the second end is used to form the ligation space.

[0017] Optionally, the auxiliary component includes a tube body and a joint part. The lumen of the tube body constitutes the guiding hole, and the joint part is arranged on the tube body; the elastic ring is connected to the auxiliary component through the joint part.

[0018] Optionally, a limiting knot is formed on a part of the first end of the auxiliary component by the elastic ring, and an outer diameter of the limiting knot is greater than a pore diameter of the guide hole.

[0019] Optionally, the auxiliary component is a spring structure.

[0020] Optionally, the elastic ring is spirally wound around the auxiliary component and stores elastic potential energy;

[0021] The elastic ring forms a plurality of spiral coils, and any one of the spiral coils is used to partially move away from the auxiliary component under the action of an external force to form the ligation space.

[0022] Compared with the prior art, the tissue ligation ring of the present invention has the following advantages:

[0023] The foregoing tissue ligation ring includes an elastic ring and an auxiliary component. The elastic ring is used to be connected to the auxiliary component, and a partial structure of the elastic ring is used to form a scalable ligation space. The elastic ring and the auxiliary component jointly act to form an elastic force that continuously contracts the ligation space, so that the elastic ring still has elastic potential energy when the ligation space shrinks to the minimum. When the tissue ligation ring is used to ligate a target tissue such as internal hemorrhoid tissue, a part of the target tissue is located in the ligation space. Since the elastic ring still has elastic potential energy when the ligation space shrinks to the minimum, the tissue ligation ring can continuously apply a force to the tissue until the target tissue is completely necrotic or substantially completely necrotic and falls off by itself, which is beneficial to reducing the area of the ulcer surface formed on the patient's body when the target tissue falls off, and even preventing the formation of an ulcer surface on the patient's body. Description of the Drawings

[0024] The drawings are used to better understand the present invention and do not constitute an improper limitation to the present invention. Among them:

[0025] Figure 1 is a schematic structural diagram of the tissue ligation ring provided by the first embodiment of the present invention. In the illustration, the auxiliary component is composed of a flat plate, and the ligation space is not shrunk to the minimum;

[0026] Figure 2 is a schematic structural diagram of the tissue ligation ring provided by the first embodiment of the present invention. In the illustration, the auxiliary component is composed of a flat plate, and the ligation space has not been formed yet;

[0027] Figure 3 is a schematic structural diagram of the tissue ligation ring provided by the first embodiment of the present invention. In the illustration, the auxiliary component is composed of an arc-shaped plate, and the ligation space is not shrunk to the minimum;

[0028] Figure 4FIG. 0 is a schematic structural diagram of the tissue ligation ring provided by the first embodiment of the present invention. The auxiliary component in the figure is composed of an arc-shaped plate, and the ligation space has not been formed yet;

[0029] Figure 5 FIG. 4 is a schematic structural diagram of the tissue ligation ring provided by the second embodiment of the present invention. The ligation space in the figure has not shrunk to the minimum;

[0030] Figure 6 FIG. 8 is a schematic structural diagram of the tissue ligation ring provided by the second embodiment of the present invention. The ligation space in the figure has not shrunk to the minimum, and Figure 6 the formation method of the ligation space in Figure 5 is different from that shown in

[0031] Figure 7 FIG. 16 is a schematic structural diagram of the tissue ligation ring provided by the third embodiment of the present invention. The ligation space in the figure has not shrunk to the minimum;

[0032] Figure 8 FIG. 20 is a schematic structural diagram of the tissue ligation ring provided by the fourth embodiment of the present invention;

[0033] Figure 9 FIG. 24 is a schematic structural diagram of the tissue ligation ring provided by the fourth embodiment of the present invention, Figure 9 which Figure 8 has a different viewing orientation from

[0034] Figure 10 FIG. 32 is a schematic structural diagram of the tissue ligation ring provided by the fifth embodiment of the present invention;

[0035] Figure 11 FIG. 36 is a schematic structural diagram of the tissue ligation ring provided by the sixth embodiment of the present invention;

[0036] Figure 12 FIG. 40 is a schematic structural diagram of the tissue ligation ring provided by the seventh embodiment of the present invention;

[0037] Figure 13 FIG. 44 is a schematic structural diagram of the tissue ligation ring provided by the eighth embodiment of the present invention;

[0038] Figure 14 FIG. 48 is a schematic structural diagram of the tissue ligation ring provided by the ninth embodiment of the present invention.

[0039] [Explanation of the reference numerals is as follows]:

[0040] 100 - Tissue ligation ring, 110 - Elastic ring, 111 - First line segment, 112 - Second line segment, 113 - Limit node, 114 - Spiral coil, 120 - Auxiliary component, 120a - First end, 120b - Second end, 121 - Engagement hole, 122 - Anti-slip structure, 123 - Channel, 124 - Inner hole, 125 - Guide hole, 126 - Connection part, 127 - Limiting part, 101 - Ligation space Detailed implementation mode

[0041] The following uses specific specific examples to illustrate the implementation modes of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in this embodiment only illustrate the basic concept of the present invention in a schematic manner. Therefore, only the components related to the present invention are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components during actual implementation. The type, quantity, and ratio of each component during its actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0042] In addition, each of the following description contents of the embodiments has one or more technical features. However, this does not mean that those who use the present invention must implement all the technical features in any one embodiment at the same time, or can only separately implement a part or all of the technical features in different embodiments. In other words, on the premise that implementation is possible, those skilled in the art can, according to the disclosure content of the present invention and depending on design specifications or implementation requirements, selectively implement some or all of the technical features in any one embodiment, or selectively implement the combination of some or all of the technical features in multiple embodiments, thereby increasing the flexibility when implementing the present invention.

[0043] As used in this specification, the singular forms "a", "an", and "the" include plural referents, and the plural form "plural" includes more than two referents, unless the context clearly dictates otherwise. As used in this specification, the term "or" is generally used in the sense of including "and / or", unless the context clearly dictates otherwise, and the terms "mounted", "connected", and "coupled" should be construed broadly. For example, it may be a fixed connection, a detachable connection, or an integral connection. It may be a mechanical connection or an electrical connection. It may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. The relational terms such as "first", "second", etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations, nor do they indicate or imply relative importance or implicitly specify the quantity of the indicated technical features. It should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] The object of the present invention is to provide a tissue ligation ring, which can be used for ligating target tissues, and the target tissues include but are not limited to internal hemorrhoid tissues or intestinal polyps. The tissue ligation ring can provide a force to the tissue throughout the process of ligating the tissue until the target tissue is completely necrotic or substantially completely necrotic and falls off by itself, effectively reducing the area of the ulcer surface formed on the patient's body due to the detachment of the target tissue, and even preventing the formation of an ulcer surface on the patient's body.

[0045] To make the object, advantages and features of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It should be noted that the drawings are in a very simplified form and use non-precise scales, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention. The same or similar reference numerals in the drawings represent the same or similar components.

[0046] Figures 1 to 14 Schematic diagrams showing the tissue ligation ring 100 provided by various embodiments of the present invention. Please refer to Figures 1 to 14, the tissue ligation ring 100 includes an elastic ring 110 and an auxiliary component 120. The elastic ring 110 is used to be connected to the auxiliary component 120, and a partial structure of the elastic ring 110 is used to form a scalable ligation space 101. The elastic ring and the auxiliary component jointly act to form an elastic force that continuously contracts the ligation space 101, and enables the elastic ring 110 to still have elastic potential energy when the ligation space 101 shrinks to the minimum. That is to say, when using the tissue ligation ring 100 of the present application to ligate the target tissue, even if the ligation space 101 has shrunk to the minimum value, it can still continuously provide a squeezing force to the target tissue to promote the continuous atrophy of the target tissue due to ischemia until the target tissue is completely necrotic or substantially completely necrotic and falls off by itself. In this way, the ulcer surface formed on the patient's body when the tissue falls off can be reduced. Even, in some cases, the ligation space 101 can shrink to completely disappear. In this case, when the tissue falls off, no ulcer surface will be formed on the patient's body. It should be noted that the meaning of "scalable" mentioned here is capable of expanding or contracting.

[0047] Next, the possible configurations of the tissue ligation ring 100 will be described through specific embodiments. It can be understood that only some optional implementation manners of the tissue ligation ring 100 are listed below, rather than all implementation manners, so it should not constitute an improper limitation to the present invention.

[0048] <Example 1>

[0049] Figures 1 to 3 Shows a schematic structural diagram of the tissue ligation ring 100 provided in this embodiment. As Figures 1 to 3 shown, the elastic ring 110 is threaded through the auxiliary component 120. Specifically, the auxiliary component 120 is a sheet-like plate body, and two engaging holes 121 arranged at intervals are formed on the auxiliary component 120, and each engaging hole 121 penetrates through the auxiliary component 120. In this embodiment, the arrangement direction of the two engaging holes 121 is referred to as the first direction, and the extending direction of the engaging hole 121 is referred to as the second direction, and the second direction intersects with the first direction. The auxiliary component 120 has a first end 120a and a second end 120b that are opposite in the second direction.

[0050] The elastic ring 110 sequentially passes through the two engaging holes 121 and is wound around the auxiliary component 120, and stores elastic potential energy. That is, the elastic ring 110 is pre-stretched by connecting it to the auxiliary component 120.

[0051] For convenience of description, in this embodiment, when the ligation space 101 is not formed, the portion of the elastic ring 110 located at the first end 120a of the auxiliary component 120 is referred to as the first line segment 111, and the portion of the elastic ring 110 located at the second end 120b of the auxiliary component 120 is referred to as the second line segment 112. When the ligation space 101 is not formed, as Figure 2 and 3 shown, the second line segment 112 abuts against the surface of the second end 120b of the auxiliary component 120. As described above, at this time, the elastic ring 110 stores elastic potential energy.

[0052] Among them, the second line segment 112 of the elastic ring 110 is used to jointly form the ligation space 101 with the surface of the auxiliary component 120 located at the second end 120b. Specifically, a pulling force is applied to the second line segment 112 along the direction from the first end 120a to the second end 120b, so that the second line segment 112 is separated from the auxiliary component 120. In this way, the space enclosed by the second line segment 112 and the surface of the auxiliary component 120 located at the second end 120b can be used as the ligation space 101. It can be understood that when the ligation space 101 shrinks to the minimum, it means that the second line segment 112 abuts against the surface of the auxiliary component 120 at the second end 120b again.

[0053] In some cases, the surface of the auxiliary component 120 at the second end 120b is smooth. Therefore, when the second line segment 112 abuts against the surface of the auxiliary component 120 at the second end 120b, there is almost no gap between the second line segment 112 and the auxiliary component 120. In other words, when the ligation space 101 shrinks to the minimum, the size of the ligation space 101 can be considered to be zero (at this time, it can also be described that the ligation space 101 no longer exists). Thus, when the target tissue falls off, no ulcer surface is formed on the patient's body.

[0054] In some cases, an anti-slip structure 122 is formed on the surface of the auxiliary component 120 at the second end 120b to increase the roughness of the surface. In this way, when the tissue ligation ring 100 is ligated to the target tissue, the friction between the tissue ligation ring 100 and the target tissue can be increased, preventing the tissue ligation ring 100 from falling off the target tissue and improving the reliability of ligation. In this embodiment, the structure of the anti-slip structure 122 is not particularly limited, and it generally includes a convex structure and a concave structure at the same time (the part between adjacent convex structures can be regarded as a concave structure, and the part between adjacent concave structures is regarded as a convex structure). When the second line segment 112 contacts the surface of the auxiliary component 120 at the second end 120b, the second line segment 112 only contacts the convex structure, and there is a certain gap between the second line segment 112 and the auxiliary component 120 at the concave structure, but this gap is extremely small and approximately zero. In this way, when the ligation space 101 shrinks to the minimum, its size is not zero but close to zero. In this case, when the target tissue falls off, although an ulcer surface may be formed on the patient's body, the ulcer surface is extremely small.

[0055] Optionally, as Figure 1 and Figure 2 shown, the sheet-like plate body constituting the auxiliary component 120 is a flat plate. In this way, any side of the auxiliary component 120 in the second direction can be used as the second end 120b, and the first line segment 111 of the elastic ring 110 abuts against the surface of the auxiliary component 120 at the first end 120a.

[0056] Alternatively, as Figure 3 shown, the sheet-like plate body constituting the auxiliary component 120 is an arc-shaped plate. Preferably, the convex side of the auxiliary component 120 is used as the second end 120b so that the surface of the auxiliary component 120 at the second end 120b is a convex surface. The advantage of this is that when the tissue ligation ring 100 is ligated to the target tissue, the ligation force on the target tissue can be increased, promoting the necrosis and shedding of the target tissue. It can be understood that in this case, as Figure 3 and Figure 4 shown, the first line segment 111 of the elastic ring 110 and the surface of the auxiliary component 120 at the first end 120a never abut.

[0057] The material of the elastic ring 110 includes, but is not limited to, any one of rubber, latex, and silica gel. The elastic ring 110 can be prefabricated into a closed ring structure and then connected to the auxiliary component 120. It can be understood that in order to connect the annular elastic ring 110 to the auxiliary component 120, a channel 123 should be formed on the wall of the engagement hole 121 so that the circumference of the engagement hole 121 is not closed, thereby allowing the elastic ring 110 to be snapped into the engagement hole 121 through the channel 123. Preferably, the channel 123 extends in the first direction, which can prevent the elastic ring 110 from detaching from the auxiliary component 120 through the channel 123. Alternatively, the elastic ring 110 is formed by tying elastic threads. In this case, there is no need to form the channel on the wall of the engagement hole 121 (i.e., the circumference of the engagement hole 121 can be closed). When assembling the elastic ring 110 and the auxiliary component 120, first pass the elastic thread through the two engagement holes 121 in sequence, and then tie a knot on the elastic thread to form a closed ring structure.

[0058] <Example Two>

[0059] Figure 5 and Figure 6 The schematic diagram showing the tissue ligation ring 100 provided in this embodiment Figure 5 The tissue ligation ring 100 in forms the ligation space 101 in the first way Figure 6 The tissue ligation ring 100 in forms the ligation space 101 in the second way.

[0060] Refer to Figure 5 and Figure 6 The difference between the tissue ligation ring 100 provided in this embodiment and that in the first embodiment is that the auxiliary component 120 is not composed of a sheet-like plate body, but is formed by bending a wire. That is to say, the auxiliary component 120 is a ring structure, and the auxiliary component 120 has an inner hole 124. It can be understood that the two engagement holes 121 are also formed by bending a wire, so the circumference of the engagement hole 121 is not closed.

[0061] For this tissue ligation ring 100, the ligation space 101 can be formed in at least two ways. Figure 5 The schematic diagram showing the formation of the ligation space 101 in the first way is shown. Please refer to Figure 5 In the first way, only the second segment 112 of the elastic ring 110 and the auxiliary component 120 on the surface of the second end 120b together form the ligation space 101, that is, this way is the same as the way of forming the ligation space 101 in the first embodiment. Figure 6The figure shows a schematic diagram when the ligation space 101 is formed by the second method. As Figure 6 shown, in the second method, both the first line segment 111 and the second line segment 112 of the elastic ring 110 participate in forming the ligation space 101. The specific operation is as follows: A pulling force directed from the first end 120a to the second end 120b is applied to both the first line segment 111 and the second line segment 112 simultaneously, such that the first line segment 111 partially passes through the inner hole 124 and is located at the second end 120b, and together with the second line segment 112 forms a double-strand wire bundle. This double-strand wire bundle and a partial surface of the auxiliary component 120 located at the second end 120b together form the ligation space 101. When the ligation space 101 is formed by the second method and ligated onto the target tissue, a stronger squeezing force can be provided to the target tissue by the double-strand wire bundle, so as to better promote ischemia and apoptosis of the target tissue. It can be understood that in the second method, when the ligation space 101 shrinks to the minimum, the second line segment 112 re-abuts against the partial surface of the auxiliary component 120 located at the second end 120b, and the first line segment 111 returns to the first end 120a under the action of the elastic force of the elastic ring 110 itself, so that the ligation space 101 no longer exists. Thus, the ligation space 101 can shrink to zero (that is, the minimum value of the ligation space 101 is zero).

[0062] In addition, the tissue ligation ring provided in this embodiment can also form the ligation space by a third method. Specifically, a pulling force directed from the first side to the second side is applied to the first line segment of the elastic ring, such that the first line segment partially passes through the inner hole and is located at the second side, thereby using the part of the first line segment located at the second side and a partial surface of the auxiliary component at the second side to jointly form the ligation space (not shown in the figure). It can be understood that when the ligation space shrinks to zero, the first line segment returns to the first side under the action of the elastic force of the elastic ring itself. Thus, the minimum value of the ligation space is zero.

[0063] <Embodiment Three>

[0064] Figure 7 is a schematic structural diagram of the tissue ligation ring 100 provided in this embodiment. As Figure 7 shown, the auxiliary component 120 is a sheet-shaped plate body, and a guide hole 125 is provided thereon. The guide hole 125 penetrates through the auxiliary component 120. In this embodiment, the axial direction of the guide hole 125 is referred to as the second direction. Therefore, the auxiliary component 120 also has a first end 120a and a second end 120b that are opposite to each other in the second direction.

[0065] The tissue ligation ring 100 provided in this embodiment forms the ligation space 101 in the following manner: a part of the structure of the elastic ring 110 is maintained at the first end 120a of the auxiliary component 120, and then another part of the structure of the elastic ring 110 is passed through the guide hole 125 from the first end 120a in a strip shape, and then passed through the guide hole 125 from the second end 120b, so that the elastic ring 110 is partially located at the second end 120b in the form of a double-stranded wire bundle. Afterwards, the part of the elastic ring 110 that passes through the guide hole 125 and reaches the second end 120b is stretched to form the ligation space 101. It can be understood that when the elastic ring 110 partially passes through the guide hole 125 and is located at the second end 120b, the elastic ring 110 is stretched and stores elastic potential energy.

[0066] In this embodiment, when the ligation space 101 shrinks to the minimum, the portion of the elastic ring 110 that passes through the guide hole 125 and reaches the second end 120b (i.e., the portion of the elastic ring 110 that forms the ligation space 101) is re-formed into a double-stranded wire bundle, that is, the ligation space 101 can shrink to its size of zero. Therefore, after the target tissue is ligated with the tissue ligation ring 100 provided in this embodiment, the target tissue can be completely necrotic, and when the target tissue falls off, basically no ulcer surface will be formed on the patient's body.

[0067] In addition, it can be understood that, when the target tissue falls off, the portion of the elastic ring 110 that passes through the guide hole 125 and reaches the second end 120b moves along the second end 120b toward 120a under the action of its own elastic force until it leaves the guide hole 125. This also shows that the ligation space 101 formed in this embodiment can shrink to zero.

[0068] The elastic ring 110 can be connected to the auxiliary component 120 in any suitable manner. Figure 7 shows an optional connection method, please continue to refer to Figure 7 , the auxiliary component 120 is formed with two engaging holes 121 arranged along a first direction, and the first direction intersects with the second direction. The two engaging holes 121 are distributed on opposite sides of the guide hole 125 and are isolated from the guide hole 125. Each engaging hole 121 passes through the auxiliary component 120 in the second direction. The elastic ring 110 is sequentially arranged at the two engaging holes 121 and wrapped around the auxiliary component 120.

[0069] After connecting the elastic ring 110 to the auxiliary component 120, the part of the elastic ring 110 located at the first end 120a of the auxiliary component 120 is called the first line segment 111, and the part of the elastic ring 110 located at the second end 120b of the auxiliary component 120 is called the second line segment 112. Subsequently, by partially passing the first line segment 111 through the guide hole 125 and reaching the second end 120b, and expanding the part of the first line segment 111 located at the second end 120b, the ligation space 101 can be formed.

[0070] Preferably, when the elastic ring 110 is wrapped around the auxiliary component 120 and the first line segment 111 has not been inserted into the guide hole 125, the elastic ring 110 has been stretched and stores elastic potential energy. Thus, when the first line segment 111 partially passes through the guide hole 125 and reaches the second end 120b, the elastic ring 110 stores sufficient elastic potential energy. Alternatively, when the elastic ring 110 is wrapped around the auxiliary component 120 but the first line segment 111 has not been inserted into the guide hole 125, the elastic ring 110 is exactly in a taut but not stretched state. At this time, once the first line segment 111 is subjected to a pulling force from the first end 120a towards the second end 120b and partially penetrates into the guide hole 125, the elastic ring 110 is stretched and stores elastic potential energy.

[0071] It can be understood that when the elastic ring 110 is pre-made into a closed ring structure and then connected to the auxiliary component 120, a channel 123 is provided on the wall of each engaging hole 121 so that the circumference of the engaging hole 121 is not closed, thereby allowing the elastic ring 110 to pass through the channel 123 and be snapped into the engaging hole 121. Preferably, the channel 123 extends in the first direction. Alternatively, the elastic ring 110 first passes through the two engaging holes 121 in the form of an elastic thread and then is knotted to form a closed ring structure. In this case, there is no need to provide the channel on the wall of the engaging hole 121.

[0072] <Example Four>

[0073] Figure 8 and Figure 9 are schematic diagrams of the tissue ligation ring 100 provided in this embodiment. Please refer to Figure 8 and Figure 9 . The difference between this embodiment and Embodiment Three lies in the connection method between the elastic ring 110 and the auxiliary component 120.

[0074] In detail, in this embodiment, only one engaging hole 121 is provided on the auxiliary component 120, the engaging hole 121 is located on one side of the guide hole 125, and the engaging hole 121 passes through the auxiliary component 120 along the second direction. The elastic ring 110 is provided at the engaging hole 121.

[0075] <Example 5>

[0076] Figure 10 shows a schematic diagram of the structure of the tissue ligation ring 100 provided in this embodiment. Please refer to Figure 10 , one of the differences between this embodiment and the fourth embodiment is that the auxiliary component 120 has a different structure, specifically, the sheet-like plate in the fourth embodiment is replaced by a tube in this embodiment.

[0077] In detail, the tube body extends along the second direction, and the lumen of the tube body constitutes the guide hole 125. When the tissue ligature ring 100 is used to ligature the target tissue, the elastic ring 110 is divided into three parts, namely, a first part, a second part and a third part, wherein the first part is inserted into the lumen of the tube body, the second part is at least partially retained at the first end 120a of the auxiliary component 120, the third part is located at the second end 120b of the auxiliary component 120, and the third part is expanded to form the ligature space 101.

[0078] The second difference between this embodiment and the fourth embodiment is that the connection method between the elastic ring 110 and the auxiliary component 120 is different. Please refer to Figure 10 , a limiting node 113 is formed on the elastic ring 110, and the outer diameter of the limiting node 113 is greater than the inner diameter of the tube body (that is, the aperture of the guide hole 125). In this way, when the tissue ligation ring 100 is used to ligate the target tissue, the limiting node 113 is set at the first end 120a of the auxiliary component 120 (that is, the limiting node 113 is formed on the second part), and the limiting node 113 can be used to limit the elastic ring 110 to prevent the elastic ring 110 from detaching from the auxiliary component 120. The limiting node 113 can be formed by tying a knot on the elastic ring 110.

[0079] <Example 6>

[0080] Figure 11 shows a schematic diagram of the tissue ligation ring provided in this embodiment. As Figure 11 ​As shown, the difference between this embodiment and the fifth embodiment is that the auxiliary component 120 not only includes the tube body, but also includes a joint portion 126, and the joint portion 126 is provided at the end of the tube body near the first end 120a. Optionally, the joint portion 126 has a joint section and a bulged body (not labeled in the figure), and the joint section connects the bulged body and the tube body. When using the tissue ligation ring 100 to ligate the target tissue, the second part of the elastic ring 110 sleeve is sleeved on the joint section and is restricted by the bulged body and does not separate from the auxiliary component 120.

[0081] <Embodiment Seven>

[0082] Figure 12 The schematic diagram of the tissue ligation ring 100 provided in this embodiment is shown. The difference between this embodiment and the sixth embodiment is the different setting position of the joint portion 126. In this embodiment, the joint portion 126 is provided on the side wall of the tube body and is close to the second end 120b. When the tissue ligation ring 100 works, the elastic ring 110 is sleeved at the joint portion 126. The advantage of such a setting is that when the third part of the elastic ring 110 is located at the second end 120b, the deformation of the elastic ring 110 can be increased, and then the elastic potential energy stored in the elastic ring 110 can be increased to better squeeze the target tissue.

[0083] <Embodiment Eight>

[0084] Figure 13 The schematic diagram of the tissue ligation ring 100 provided in this embodiment is shown. Refer to Figure 13 , the difference between this embodiment and the fifth embodiment is that a spring structure is used to replace the tube body. The advantage of this embodiment is that in the initial stage of using the tissue ligation ring 100 to ligate the target tissue, the target tissue applies an axial extrusion force to the spring structure, so that the spring structure is compressed and stores elastic potential energy, and this elastic potential energy acts on the target tissue in the reverse direction, improving the extrusion force on the target tissue and facilitating the ischemia and apoptosis of the target tissue.

[0085] <Embodiment Nine>

[0086] Figure 14 The schematic diagram of the tissue ligation ring 100 provided in this embodiment is shown. In this embodiment, the auxiliary component 120 includes a columnar structure such as a cylindrical structure, and the elastic ring 110 is helically wound around the columnar structure 120 and stores elastic potential energy. The elastic ring 110 forms a plurality of helical turns 114, and any one of the helical turns 114 can be used to form the ligation space 101.

[0087] The spiral coil 114 used to form the ligation space 101 is called the target spiral coil. The specific method for forming the ligation space 101 is as follows: Apply a radially outward pulling force along the columnar structure to the target spiral coil, so that the target spiral coil partially moves away from the columnar structure, and the space enclosed by the part of the target spiral coil away from the columnar structure and the surface of other spiral coils 114 and / or the side surface of the columnar structure constitutes a large-sized ligation space 101.

[0088] It should be understood that if the space enclosed by the part of the target spiral coil away from the columnar structure and the side surface of the columnar structure forms the ligation space 101, then when the ligation space 101 shrinks to the minimum, the target spiral coil completely adheres to the surface of the columnar structure, so that the size of the ligation space 101 shrinks to zero (that is, the ligation space no longer exists). If the space enclosed by the part of the target spiral coil away from the columnar structure and the side surface of the columnar structure and the surface of other spiral coils forms the ligation space 101, and there is a gap between adjacent two spiral coils 114, then when the ligation space 101 shrinks to the minimum, the target spiral coil partially adheres to the surface of other spiral coils and there is a gap with the side surface of the columnar structure. That is, the ligation space 101 cannot completely shrink to zero, but because the thickness of the elastic ring 110 is extremely small, therefore, the gap between the target spiral coil and the side surface of the columnar structure is also extremely small, so it can be considered that the minimum value of the ligation space 101 is approximately zero.

[0089] In this embodiment, when the circumference of the elastic ring 110 in the natural state is certain, the more turns the elastic ring 110 winds around the columnar structure, the greater the elastic potential energy stored in the elastic ring 110. When it forms the ligation space 101 and ligates the target tissue, it can better promote the ischemia and apoptosis of the target tissue.

[0090] In addition, a limiting member 127 can also be provided on the auxiliary member 120. The limiting member 127 is used to prevent the elastic ring 110 from detaching from the auxiliary member 120. The form of the limiting member 127 in this embodiment is not particularly limited as long as it can achieve the purpose. In an optional manner, the limiting member 127 is, for example, a limiting cap provided at both axial ends of the columnar structure, and the outer diameter of the limiting cap is larger than the outer diameter of the columnar structure.

[0091] In summary, in the tissue ligation ring provided by each embodiment of the present invention, by connecting the elastic ring to the auxiliary component, and then forming the ligation space and ligating it on the target tissue, it can be ensured that the elastic ring still has a certain elastic potential energy when the ligation space shrinks to the minimum, and continuously applies a squeezing force to the target tissue to promote further necrosis of the target tissue until the target tissue falls off by itself, which can effectively reduce the area of the ulcer surface formed on the patient's body due to the detachment of the target tissue.

[0092] Although the present invention is disclosed as above, it is not limited thereto. Those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims

1. A tissue ligation ring, characterized in that: It comprises an elastic ring and an auxiliary component, wherein the elastic ring is connected to the auxiliary component, and a part of the structure of the elastic ring is used to form an expandable ligation space; the elastic ring and the auxiliary component work together to form an elastic force that causes the ligation space to continuously shrink, and the elastic ring still has elastic potential energy when the ligation space shrinks to the minimum.

2. The tissue ligation ring according to claim 1, characterized in that: The elastic ring is passed through the auxiliary component.

3. The tissue ligation ring according to claim 2, characterized in that: The auxiliary component is provided with two engaging holes arranged at intervals, and each engaging hole passes through the auxiliary component; The elastic ring passes through the two engaging holes, is wrapped around the auxiliary component, and stores elastic potential energy; The elastic ring is used to form the ligation space together with at least a portion of the surface of one side of the auxiliary component.

4. The tissue ligation ring according to claim 3, characterized in that: The auxiliary component is an arc-shaped structure, and the convex surface of the auxiliary component is used to form the ligation space together with the elastic ring.

5. The tissue ligation ring according to claim 3 or 4, characterized in that: The auxiliary component is a sheet-like plate; or, the auxiliary component is an annular structure formed by winding wire; or, an anti-slip structure is arranged on the surface of the auxiliary component used for forming the ligation space.

6. The tissue ligation ring according to claim 2, characterized in that: The auxiliary component is a sheet-like plate; The auxiliary component is provided with a coupling hole and a guide hole, and both the coupling hole and the guide hole pass through the auxiliary component; a part of the elastic ring is passed through the coupling hole to form a positioning connection with the auxiliary component, and another part of the elastic ring passes through the guide hole and is used to form the ligation space.

7. The tissue ligation ring according to claim 1, characterized in that: The auxiliary component is provided with a through guide hole, and the auxiliary component has a first end and a second end opposite to each other in the axial direction of the guide hole; The elastic ring is partially arranged in a strip shape in the guide hole, one end of the elastic ring is positioned and connected to the auxiliary component, the other end is exposed at the second end, and stores elastic potential energy; the part of the elastic ring exposed at the second end is used to form the ligation space.

8. The tissue ligation ring according to claim 7, characterized in that: The auxiliary component comprises a tube body and a joint portion, the tube cavity of the tube body constitutes the guide hole, and the joint portion is arranged on the tube body; the elastic ring is connected to the auxiliary component through the joint portion.

9. The tissue ligation ring according to claim 7, characterized in that: A limit node is formed on the portion of the elastic ring located at the first end of the auxiliary component, and the outer diameter of the limit node is larger than the aperture of the guide hole.

10. The tissue ligation ring according to claim 8 or 9, characterized in that: The auxiliary component is a spring structure.

11. The tissue ligation ring according to claim 1, characterized in that: The elastic ring is spirally wound on the auxiliary component and stores elastic potential energy; The elastic ring forms a plurality of spiral circles, and any one of the spiral circles is used to partially move away from the auxiliary component under the action of external force to form the ligation space.

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