A ligature clip

Abstract

The present invention relates to the technical field of medical devices, and specifically to a ligation clamp, comprising: a female plug body, on which a connected access channel and a ligation groove are provided, and a fine pipe can enter along the access channel and be accommodated in the ligation groove; a male plug body, which is plugged and matched with the female plug body to be movably accommodated in the ligation groove and the access channel, the head shape of the male plug body matches the ligation groove, and the head of the male plug body abuts against the side wall of the ligation groove to ligate the fine pipe; and a locking member, which is used to lock the male plug body at a predetermined position of the female plug body so that the head of the male plug body abuts against the side wall of the ligation groove. By dividing the ligation clamp into two parts, the female plug body and the male plug body, in the process of ligating the fine pipe, the ligation clamp does not need to be deformed, successfully avoiding the characteristic of the degradable magnesium alloy that is not easy to deform, so that the fine pipe can be effectively clamped.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a ligation clip. Background Art

[0002] With the development and progress of science and technology, minimally invasive surgery has gradually become popular in the medical field due to its advantages of small trauma, light pain and fast recovery. During minimally invasive surgery, doctors usually need to temporarily close some tiny ducts in the human body, such as blood vessels, lymphatic vessels, bile ducts, etc., to prevent tissue fluid leakage during or after surgery and endanger the patient's life. At present, for the temporary closure of such ducts, ligation clips are usually used to ligate them.

[0003] Ligation clips are divided into two types: degradable ligation clips and non-degradable ligation clips. Among them, non-degradable ligation clips cannot be absorbed by the human body and need to be removed by a second operation, which is easy to cause secondary damage to the patient's body. Degradable ligation clips are favored by doctors and patients because they can be degraded in the human body.

[0004] At present, the degradable ligation clips on the market are basically made of polymer materials. However, the ligation clips made of polymer materials have the problem of poor mechanical properties, which can easily cause the clamping force of the ligation clip to be small and fail to effectively clamp the pipeline, which can easily cause tissue fluid leakage. Therefore, people are exploring the use of metal materials to replace polymer materials. At present, the most studied and best-performing degradable metal is magnesium alloy.

[0005] like Figure 1 As shown, the current magnesium alloy ligation clamp is usually set in an integrated "C" shape, and a buckle and a slot are respectively set at both ends of the ligation clamp. When the fine tube needs to be ligated, the fine tube is placed between the two arms of the ligation clamp, and then the buckle and the slot are buckled. The operation is simple and convenient.

[0006] However, since magnesium alloy has very poor plasticity at room temperature, and this type of ligature clip requires the magnesium alloy to undergo large plastic deformation during the closing process, this type of ligature clip is very likely to break during the closing process. Summary of the invention

[0007] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the ligation clip in the prior art needs to undergo large plastic deformation during the closing process and is therefore prone to breakage during the closing process, thereby providing a ligation clip.

[0008] In order to solve the above technical problems, the technical solution provided by the present invention is:

[0009] A ligation clip, comprising:

[0010] A female plug body, on which a communicating access channel and a ligation groove are provided, and a fine tube can enter along the access channel and be accommodated in the ligation groove;

[0011] A male plug body, which is plugged and matched with the female plug body to be movably accommodated in the ligation groove and the access channel, the head shape of the male plug body matches the shape of the ligation groove, and the head of the male plug body abuts against the side wall of the ligation groove to ligate the fine tube;

[0012] And, a locking piece is used to lock the male plug body at a predetermined position of the female plug body so that the head of the male plug body abuts against the side wall of the ligation groove.

[0013] Furthermore, the male connector includes an upper arm and a lower arm arranged in parallel, the upper arm and the lower arm cooperate to form a slide groove, and the locking member includes:

[0014] A guide boss is arranged on the access channel, and its extension direction is consistent with that of the access channel, the guide boss can slide along the slide groove, and the thickness of the guide boss is consistent with the distance between the upper arm and the lower arm;

[0015] At least one locking boss is arranged on the upper arm and / or the lower arm and is located at the end where the head of the male connector is located. When the guide boss slides in the slide groove, it abuts against the locking boss to drive the upper arm and / or the lower arm to undergo elastic deformation in the thickness direction of the guide boss. When the male connector is locked with the female connector, the locking boss is accommodated in the ligation groove and abuts against the edge of the guide boss.

[0016] Furthermore, two guide bosses are provided, and are respectively arranged on two opposite side walls of the access channel.

[0017] Furthermore, along the insertion direction of the male connector, the thickness of the guide boss gradually increases.

[0018] Furthermore, along the insertion direction of the male connector, a chamfer is provided at the rear end of the guide boss.

[0019] Furthermore, along the insertion direction of the male connector, the head end of the guide boss is also provided with a chamfer.

[0020] Furthermore, there are two locking bosses, which are respectively arranged on the upper arm and the lower arm opposite to each other.

[0021] Furthermore, the edge shape of the locking boss matches the edge of the guide boss.

[0022] Furthermore, along the insertion direction of the male connector, the upper arm and / or the lower arm are provided with an inclined surface for facilitating the extension of the guide boss.

[0023] Furthermore, the male connector and / or the female connector are both provided with a clamping groove for clamping by a ligating forceps.

[0024] The technical solution of the present invention has the following advantages:

[0025] 1. The ligation clamp provided by the present invention is divided into two parts, a female plug-in body and a male plug-in body. When a minute tube is to be ligated, it is only necessary to plug the female plug-in body into the male plug-in body so that the head of the male plug-in body abuts against the ligation groove, and the male plug-in body and the female plug-in body are locked by a locking piece. In the process of ligating the minute tube, the ligation clamp does not need to be deformed, and the characteristic of the biodegradable magnesium alloy that it is not easy to deform is successfully avoided, so that the minute tube can be effectively clamped.

[0026] 2. The ligation clamp provided by the present invention, by setting the locking piece as a guide boss and a locking boss, when the fine tube is to be ligated, the fine tube can be placed in the ligation groove, and then the guide boss is placed in the slide groove, and the male plug body is pushed forward. When the male plug body moves to the side where the female plug body is located, the guide boss first abuts against the locking boss. Since the spacing between the upper arm and the lower arm is consistent with the thickness of the guide boss, under the action of the locking boss, the upper arm and / or the lower arm will undergo elastic deformation at this time to cooperate with the guide boss to clamp. With the further movement of the male plug body, the guide boss is separated from the locking boss. At this time, the upper arm and the lower arm will restore their elastic deformation, and finally form a position in which the locking boss is accommodated in the ligation groove and abuts against the edge of the guide boss, and the head of the male connector abuts against the groove wall of the ligation groove. Under the blocking action of the guide boss, the male connector can no longer escape from the female connector, thereby achieving locking between the male connector and the female connector. The structure is simple and the locking operation is simple and convenient. During use, the female connector will not deform, and the male connector only needs to undergo slight elastic deformation. Therefore, the ligation clamp can still be prevented from breaking due to the poor plasticity of magnesium alloy at room temperature.

[0027] 3. The ligation clamp provided by the present invention can make the plug-in cooperation between the female plug-in body and the male plug-in body more stable by providing two guide bosses which are relatively distributed on both sides of the access channel.

[0028] 4. The ligation clip provided by the present invention sets the thickness of the guide boss to gradually increase along the insertion direction of the male connector, so that the locking boss can be more tightly abutted against the guide boss, thereby further preventing the male connector from escaping from the female connector, making the plug-in cooperation between the female connector and the male connector more stable.

[0029] 5. The ligation clamp provided by the present invention can facilitate the entry of fine pipes by setting a chamfer at the tail end of the guide boss, thereby preventing the fine pipes from being cut when contacting the fine pipes due to the overly sharp edge of the guide boss; on the other hand, it can facilitate the guide boss to enter the slide groove of the male plug-in body, thereby facilitating the plug-in fit between the male plug-in body and the female plug-in body.

[0030] 6. The ligation clamp provided by the present invention can facilitate the uniform distribution of fine tubes in the ligation groove by also arranging a chamfer at the head end of the wire boss.

[0031] 7. The ligation clamp provided by the present invention can, on the one hand, further enhance the locking stability between the male connector and the female connector by providing two locking bosses, and on the other hand, can evenly distribute the elastic deformation required for the male connector to the upper and lower arms, thereby further weakening the elastic deformation required for a single wall and further preventing the male connector from breaking.

[0032] 8. The ligation clip provided by the present invention can form a surface abutment with the guide boss when the locking boss is accommodated in the ligation groove by setting the edge shape of the locking boss to match the edge of the guide boss, thereby further enhancing the locking stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 It is a schematic diagram of the structure of a ligation clip in the prior art;

[0035] Figure 2 It is a schematic structural diagram of the ligation clip in Example 1 of the present invention;

[0036] Figure 3 It is a schematic structural diagram of the female plug body in Embodiment 1 of the present invention;

[0037] Figure 4 Schematic diagram of the structure of the male plug body in Example 1 of the present invention;

[0038] Figure 5 Schematic diagram of the structure of the ligation clip in Example 2 of the present invention;

[0039] Figure 6 Schematic diagram of the structure of the ligation clip in Example 3 of the present invention.

[0040] Description of reference numerals:

[0041] 1. Female connector; 11. Access channel; 12. Ligation groove; 13. Guide boss; 2. Male connector; 21. Upper arm; 211. Inclined surface; 22. Lower arm; 23. Slide groove; 24. Locking boss; 3. Connecting plate; 4. Clamping groove. DETAILED DESCRIPTION

[0042] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are 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 therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0046] Example 1

[0047] Combination Figure 2-4The present embodiment relates to a ligation clamp, comprising a female plug-in body 1, a male plug-in body 2 and a locking member. The female plug-in body 1 is provided with an inlet and outlet channel 11 and a ligation groove 12 which are interconnected. The fine tube can enter the ligation groove 12 along the inlet and outlet channel 11 and be accommodated in the ligation groove 12. The male plug-in body 2 is plugged and matched with the female plug-in body 1. The male plug-in body 2 can be movably accommodated in the ligation groove 12 and the inlet and outlet channel 11. The shape of the head of the male plug-in body 2 matches the shape of the ligation groove 12. The fine tube accommodated in the ligation groove 12 can be ligated by abutting the head of the male plug-in body 2 against the side wall of the ligation groove 12. The locking member is used to lock the male plug-in body 2 with the female plug-in body 1, thereby completing the ligation action.

[0048] In this embodiment, the head shape of the male connector 2 and the shape of the ligation groove 12 are both semicircular, the female connector 1 is formed in a U shape as a whole, and the male connector 2 is formed in a T shape as a whole.

[0049] Specifically, the male connector 2 includes an upper arm 21 and a lower arm 22 arranged in parallel, and the upper arm 21 and the lower arm 22 cooperate to form a slide groove 23. In this embodiment, the width of the upper arm 21 and the lower arm 22 is consistent with the width of the access channel 11, and the locking member includes a guide boss 13 and a locking boss 24. The guide boss 13 is fixed on the female connector 1 and is located on the access channel 11. The extension direction of the guide boss 13 is consistent with the extension direction of the access channel 11. The guide boss 13 can slide along the slide groove 23, and the thickness of the guide boss 13 is consistent with the thickness of the slide groove 23. There is at least one locking boss 24, which is respectively arranged on the upper arm 21 and / or the lower arm 22, and the locking boss 24 is located at the end where the head of the male connector 2 is located. When the guide boss 13 slides in the slide groove 23, it will abut against the locking boss 24, thereby driving the upper arm 21 and / or the lower arm 22 to undergo elastic deformation in the thickness direction of the guide boss 13. When the male connector 2 is locked with the female connector 1, the locking boss 24 is accommodated in the ligation groove 12 and abuts against the edge of the guide boss 13.

[0050] When the fine tube is to be ligated, the fine tube can be placed in the ligation groove 12, and then the guide boss 13 is placed in the slide groove 23, and the male plug body 2 is pushed forward. When the male plug body 2 moves toward the side where the female plug body 1 is located, the guide boss 13 first abuts against the locking boss 24. Since the spacing between the upper arm 21 and the lower arm 22 is consistent with the thickness of the guide boss 13, under the action of the locking boss 24, the upper arm 21 and / or the lower arm 22 will undergo elastic deformation and cooperate to clamp the guide boss 13. As the male plug body 2 moves further, the guide boss 13 separates from the locking boss 24. At this time, the upper arm 21 and the lower arm 22 will restore elastic deformation, and finally form a position state in which the locking boss 24 is accommodated in the ligation groove 12 and abuts against the edge of the guide boss 13, and the head of the male plug body 2 abuts against the groove wall of the ligation groove 12. Under the blocking effect of the guide boss 13, the male plug body 2 can no longer escape from the female plug body 1, thereby realizing the locking between the male plug body 2 and the female plug body 1. The structure is simple and the locking operation is simple and convenient. During use, the female plug body 1 will not be deformed, and the male plug body 2 only needs to undergo a slight elastic deformation. Therefore, the ligation clip can still be prevented from breaking due to the poor plasticity of magnesium alloy at room temperature.

[0051] In this embodiment, two locking bosses 24 are provided, and are respectively provided on the upper arm 21 and the lower arm 22. This arrangement, on the one hand, can further enhance the locking stability between the male connector 2 and the female connector 1; on the other hand, the elastic deformation required for the male connector 2 can be evenly distributed to the upper and lower arms 22, thereby further weakening the elastic deformation required for a single wall and further preventing the male connector 2 from breaking.

[0052] It should be noted that in order to adjust the connection strength between the upper arm 21 and the lower arm 22, in the present embodiment, a connecting plate 3 is further provided between the upper arm 21 and the lower arm 22. By adjusting the length of the connecting plate 3, the connection strength between the upper arm 21 and the lower arm 22 can be adjusted, so that the upper arm 21 and the lower arm 22 can undergo elastic deformation but at the same time have a certain connection strength.

[0053] In this embodiment, in order to make the plug-in fit between the female plug body 1 and the male plug body 2 more stable, two guide bosses 13 are also provided, and the guide bosses 13 are respectively provided on two opposite side walls of the access channel 11 .

[0054] Among them, in order to further enhance the locking tightness between the male connector 2 and the female connector, the thickness of the guide boss 13 is set to gradually increase along the insertion direction of the male connector 2. In this way, when the male connector 2 is gradually inserted into the female connector 1, the elastic deformation of the upper arm 21 and the lower arm 22 will gradually increase, so that the locking boss 24 can have a larger resilience to rebound, so that the locking boss 24 can be more tightly in contact with the guide boss 13, thereby further preventing the male connector 2 from falling out of the female connector 1.

[0055] In this embodiment, a chamfer is provided at the tail end of the guide boss 13 in the direction of insertion of the male connector 2, that is, the tail end of the guide boss 13 is in a circular arc transition. This arrangement can, on the one hand, facilitate the entry of fine pipes and prevent the fine pipes from being cut when contacting the fine pipes due to the overly sharp edges of the guide boss 13. On the other hand, it can facilitate the guide boss 13 to enter the slide groove 23 of the male connector 2, thereby facilitating the completion of the plug-in fit between the male connector 2 and the female connector 1.

[0056] In order to make the fine tubes more evenly distributed in the ligation groove 12, in this embodiment, a chamfer is also provided at the head end of the guide boss 13 along the insertion direction of the male connector 2.

[0057] In addition, in this embodiment, the edge of the locking boss 24 is also configured to match the edge shape of the guide boss 13. This configuration allows the locking boss 24 to form a surface abutment with the guide boss 13 when accommodated in the ligation groove 12, thereby further enhancing the locking stability.

[0058] In order to facilitate the guide boss 13 to extend into the slide groove 23, in this embodiment, an inclined surface 211 is provided on both the upper arm 21 and the lower arm 22, and the inclined surfaces 211 on the upper arm 21 and the lower arm 22 cooperate to form a trumpet shape with the opening direction facing the ligation groove 12. In other embodiments, the inclined surface 211 may be provided only on the upper arm 21 or the lower arm 22.

[0059] In this embodiment, in order to facilitate the ligating forceps to clamp the male plug body 2 and the female plug body 1, a clamping groove 4 is opened on the male plug body 2 and the female plug body 1. The clamping groove 4 is wedge-shaped and suitable for the ligating forceps to extend into and clamp.

[0060] In this embodiment, the male plug body 2 and the female plug body 1 are made of magnesium or a magnesium alloy in one piece.

[0061] The usage principle of this embodiment is roughly as follows:

[0062] By dividing the ligation clamp into two parts, a female plug-in body 1 and a male plug-in body 2, when the tiny tube is to be ligated, it is only necessary to plug the female plug-in body 1 into the male plug-in body 2 so that the head of the male plug-in body 2 abuts against the ligation groove 12, and use the locking piece to lock the male plug-in body 2 and the female plug-in body 1. In the process of ligating the tiny tube, the ligation clamp does not need to be deformed, and the characteristic of the biodegradable magnesium alloy that it is not easy to deform is successfully avoided, so that the tiny tube can be effectively clamped.

[0063] Example 2

[0064] like Figure 5 As shown, this embodiment relates to a ligation clip. The difference between this embodiment and embodiment 1 is that, in this embodiment, the head of the male connector 2 is in an "M" shape, and the ligation groove 12 is in a "W" shape.

[0065] Example 3

[0066] like Figure 6 As shown, this embodiment relates to a ligation clip. The difference between this embodiment and embodiment 1 is that in this embodiment, the head of the male connector 2 and the ligation groove 12 are both configured to be wavy.

[0067] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A ligation clip, characterized in that: include: A female plug body (1) is provided with a communicating access channel (11) and a ligation groove (12), and a fine tube can enter along the access channel (11) and be accommodated in the ligation groove (12); A male plug body (2) is plugged into and matched with the female plug body (1) to be movably accommodated in the ligation groove (12) and the access channel (11); the shape of the head of the male plug body (2) matches the shape of the ligation groove (12); the head of the male plug body (2) abuts against the side wall of the ligation groove (12) to ligate the fine tube; and a locking member, used for locking the male plug body (2) at a predetermined position of the female plug body (1) so that the head of the male plug body (2) abuts against the side wall of the ligation groove (12); The male connector (2) comprises an upper arm (21) and a lower arm (22) arranged in parallel, wherein the upper arm (21) and the lower arm (22) cooperate to form a slide groove (23), and the locking member comprises: A guide boss (13) is arranged on the access channel (11) and has an extension direction consistent with the extension direction of the access channel (11); the guide boss (13) can slide along the slide groove (23); and the thickness of the guide boss (13) is consistent with the spacing between the upper arm (21) and the lower arm (22); At least one locking boss (24) is arranged on the upper arm (21) and / or the lower arm (22) and is located at the end where the head of the male connector (2) is located. When the guide boss (13) slides in the slide groove (23), it abuts against the locking boss (24) to drive the upper arm (21) and / or the lower arm (22) to undergo elastic deformation in the thickness direction of the guide boss (13). When the male connector (2) is locked with the female connector (1), the locking boss (24) is accommodated in the ligation groove (12) and abuts against the edge of the guide boss (13).

2. The ligation clip according to claim 1, characterized in that: Two guide bosses (13) are provided, and are respectively arranged on two opposite side walls of the inlet and outlet channel (11).

3. The ligation clip according to claim 1 or 2, characterized in that: Along the insertion direction of the male connector (2), the thickness of the guide boss (13) gradually increases.

4. The ligation clip according to claim 1 or 2, characterized in that: Along the insertion direction of the male connector (2), the tail end of the guide boss (13) is provided with a chamfer.

5. The ligation clip according to claim 4, characterized in that: Along the insertion direction of the male connector (2), the head end of the guide boss (13) is also provided with a chamfer.

6. The ligation clip according to claim 1, characterized in that: Two locking bosses (24) are provided, and are respectively arranged on the upper arm (21) and the lower arm (22) in a relative manner.

7. The ligation clip according to claim 1 or 6, characterized in that: The edge shape of the locking boss (24) matches the edge of the guide boss (13).

8. The ligation clip according to claim 1, characterized in that: Along the insertion direction of the male connector (2), the upper arm (21) and / or the lower arm (22) are provided with an inclined surface (211) for facilitating the insertion of the guide boss (13).

9. The ligation clip according to claim 1, characterized in that: The male plug-in body (2) and the female plug-in body (1) are both provided with clamping grooves (4) for clamping by ligating forceps.

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