Simple closing clamp

Abstract

The invention discloses a simple closing clamp. The simple closing clamp comprises a frame body, two clamping arms, a driving assembly and two locking structures. In the initial state, the two locking structures abut against each other and are not connected, so that the distance between the two clamping parts is minimum, and even if the radial size of the end, inserted into the human body, of the simple closing clamp is small, the simple closing clamp is suitable for being applied to more scenes and particularly suitable for being used in a narrow operation space; in the process of changing the opening state into the locking state, after the two locking structures make contact with each other and are in place of the locking positions, the two locking structures limit each other through themselves so that the clamping arms can not move relatively, the locking structures can achieve mutual locking of the two clamping arms without complex and precise structures, on one hand, on the other hand, on the other hand, on the other hand, on the other hand, the clamping arms can not move relatively. On the one hand, the layout of the product is more concise, the occupied space is small, the installation and maintenance are easy, the operation is simple, on the other hand, the complexity and the fault rate of the product are reduced, and the reliability and the stability of the product are improved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices for endoscopic minimally invasive surgery, and in particular to a simple closure clip. Background Art

[0002] The most commonly used soft endoscopic gastrointestinal defect suturing device is the endoscope clip. The endoscope clip directly passes through the endoscope working channel, and there is no need to install the endoscope, making the operation efficient. Since the inner diameter of the soft endoscope working channel is small, the outer diameter of the endoscope clip is required to be thin, which greatly increases the difficulty of development and design. In order to design the arrangement structure within a limited size space, how to design the locking structure of the endoscope clip is crucial.

[0003] At present, in most existing endoscopic clamp technologies, the locking structure achieves the locking effect by interfering with the structure on the outer wall or inner wall of the endoscopic clamp shell, which increases the complexity of the structure; in addition, the traditional endoscopic clamp (double-arm clamp) is mainly used to close smaller mucosal tissue defects. For larger defects, there is a special endoscopic clamp (three-arm clamp) that can effectively close large defects. However, in the existing three-arm clamp technology, the three-arm clamp structure is more complicated than the two-arm clamp structure. Summary of the invention

[0004] An embodiment of the present application provides a simple closing clamp, which includes: a frame; two clamping arms, which are hinged and installed on the frame, and the clamping arms include a clamping part, a connecting part and a control part arranged in sequence, and the two connecting parts are hinged; a driving component, which is respectively connected to the two control parts, and the driving component is configured to control the rotation of the clamping part relative to the frame; and two locking structures, which are respectively arranged on the two control parts; wherein the simple closing clamp has an initial state, an open state and a locked state that change in sequence; in the initial state, the two clamping parts are closed together, and the two locking structures are abutted against each other; in the open state, the two clamping parts are separated, and the two locking structures are separated; in the locked state, the two clamping parts are closed together, and the two locking structures are limited to each other, so that the two clamping arms are relatively fixed.

[0005] In some embodiments, at least one locking structure is movable relative to the clamping arm; when the initial state is changed to the open state, the locking structure moves relative to the clamping portion.

[0006] In some embodiments, one of the locking structures is a first spring sheet, and the other locking structure is a fixing member; the first spring sheet includes a first fixing portion and a first bending portion, and the first fixing portion is connected to the clamping arm; in an initial state, the first bending portion abuts against the fixing member, and is squeezed by the fixing member to bend toward the first fixing portion, so that the first spring sheet is in a force storage state; in the process of changing from the initial state to the open state, the first bending portion is separated from the fixing member, and under the action of the elastic force of the first spring sheet itself, the first bending portion moves relative to the clamping arm; in the locked state, the first bending portion is clamped on the fixing member.

[0007] In some embodiments, the hook of the first bent portion can be hooked onto the fixing member.

[0008] In some embodiments, a plurality of mating teeth are provided on the fixing member, and the clamping structure of the first bent portion can be connected to the mating teeth.

[0009] In some embodiments, the fixing member is a fixing plate, a snap-fit ​​hook is provided on the fixing plate, and the snap-fit ​​hook of the first bent portion is hooked with the snap-fit ​​hook.

[0010] In some embodiments, the two locking structures are both second spring sheets; the second spring sheets include a second fixed portion and a second bent portion, and the second fixed portion is connected to the clamping arm; in an initial state, the two second bent portions abut against each other and are squeezed toward the second fixed portion and bent so that the second spring sheets are in a state of storing force; in the process of changing from the initial state to the open state, the two second bent portions are separated, and under the action of the elastic force of the second spring sheet itself, the second bent portion moves relative to the clamping arm; in the locked state, the hooks of the two second bent portions are hooked together.

[0011] In some embodiments, the two locking structures each include a connecting piece and a reset piece, the connecting piece being connected to the clamping arm and being able to rotate relative to the clamping arm, and the reset piece being respectively connected to the connecting piece and the clamping arm; in an initial state, the two connecting pieces abut against each other, and the reset piece is in a force storage state; in the process of changing from the initial state to the open state, the two connecting pieces are separated, and under the action of the elastic force of the reset piece, the connecting piece rotates relative to the clamping arm; in the locked state, the clamping structures of the two connecting pieces are clamped together.

[0012] In some embodiments, in the direction from the control part to the clamping part, the line connecting the rotation centers of the two connecting pieces divides the space where the connecting pieces are located into a first part and a second part; in the process of changing from the initial state to the open state, the snap-fitting structure of the two connecting pieces enters the second part from the first part; in the process of changing from the open state to the locked state, the center points of the surfaces on the outer surfaces of the two connecting pieces that first contact each other are located in the second part.

[0013] In some embodiments, the snap-fit ​​structure of the connecting piece is a snap-fit ​​hook or a snap-fit ​​tooth.

[0014] In some embodiments, a limit member is disposed on the clamping arm, the limit member is disposed adjacent to the locking structure and is located on the movement path of the locking structure, and the limit member is configured to limit the movement distance of the locking structure.

[0015] In some embodiments, the two locking structures are limit racks arranged on the control part; in the initial state, the two limit racks abut against each other; in the open state, the two limit teeth are separated; in the locked state, the limit teeth on the two limit racks are meshed with each other.

[0016] In some embodiments, a groove is provided on the control portion, and the locking structure is located in the groove.

[0017] In some embodiments, the simple closing clip further includes: a clamping core, the clamping core is fixedly connected to the frame and is located between the two clamping parts, and the clamping core is configured to cooperate with the clamping parts.

[0018] In some embodiments, the driving assembly includes a push-pull member, which is connected to the control part and can rotate relative to the control part, and a breaking opening is provided on the push-pull member.

[0019] In some embodiments, the frame body includes a fixed seat and a connecting frame; the clamping arm is arranged on the fixed seat; the fixed seat is detachably connected to the connecting frame through a connecting member; a limiting portion is arranged on the push-pull member, and the limiting portion is located between the connecting member and the clamping arm, and along the moving direction of the push-pull member, the limiting portion can interfere with the connecting member.

[0020] Compared with the prior art, the above technical solution has the following advantages:

[0021] In the initial state, the two locking structures are against each other and have no connection relationship, so that the distance between the two clamping parts is minimized. Even if the radial dimension of one end of the simple closed clamp inserted into the human body is small, the product is suitable for more scenarios, especially narrow operating spaces. In the process of changing from the open state to the locked state, the two locking structures contact each other, and after being in the locked position, the two locking structures limit each other by themselves so that the clamping arms cannot move relative to each other. The above-mentioned locking structure does not require a complex and precise structure to achieve the mutual locking of the two clamping arms. On the one hand, it makes the layout of the product more concise, occupies less space, is easy to install and maintain, and is simple to operate. On the other hand, it reduces the complexity and failure rate of the product and improves the reliability and stability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 This is a schematic structural diagram of a first embodiment of the simple closing clip described in the present application;

[0024] Figure 2 for Figure 1 A schematic diagram of the exploded structure of the simple closing clip shown;

[0025] Figure 3 for Figure 1 A schematic diagram of a partial cross-sectional structure of the simple closing clip shown;

[0026] Figure 4 for Figure 3 A schematic diagram of the enlarged structure of the middle part A;

[0027] Figure 5 for Figure 1 A schematic diagram of the structure of the simple closing clip shown in the open state;

[0028] Figure 6 for Figure 1 A schematic diagram of the structure of the simple closing clip in a locked state;

[0029] Figure 7 for Figure 6 A schematic diagram of a partial cross-sectional structure of the simple closing clip shown;

[0030] Figure 8 for Figure 7 A schematic diagram of the enlarged structure of the middle B part;

[0031] Fig. 9 for Figure 1 A schematic diagram of the structure of the push-pull member shown in ;

[0032] Fig.10 for Figure 1 A schematic diagram of the structure of a clamping arm is shown in FIG.

[0033] Fig.11 for Figure 1 A schematic structural diagram of another clamping arm shown in ;

[0034] Fig.12 This is a schematic structural diagram of a second embodiment of the simple closing clip described in the present application;

[0035] Fig.13 for Fig.12 A schematic diagram of a partial cross-sectional structure of the simple closing clip shown;

[0036] Fig.14 for Fig.12 A schematic diagram of the structure of the simple closing clip in a locked state;

[0037] Fig.15 for Fig.14 A schematic diagram of a partial cross-sectional structure of the simple closing clip shown;

[0038] Fig.16 It is a partial cross-sectional structural schematic diagram of the third embodiment of the simple closing clip described in the present application in an initial state;

[0039] Fig.17 It is a partial cross-sectional structural schematic diagram of the third embodiment of the simple closing clip described in the present application in a locked state;

[0040] Fig.18 This is a structural schematic diagram of a fourth embodiment of the simple closing clip described in the present application;

[0041] Fig.19 for Fig.18 A schematic diagram of a partial cross-sectional structure of the simple closing clip shown;

[0042] Fig. 20 for Fig.18 A schematic diagram of the structure of the simple closing clip in a locked state;

[0043] Fig.21 for Fig. 20 A schematic diagram of a partial cross-sectional structure of the simple closing clip shown;

[0044] Fig. 22 This is a structural schematic diagram of a fifth embodiment of the simple closing clip described in the present application;

[0045] Fig.23 for Fig. 22A schematic diagram of the exploded structure of the simple closing clip shown;

[0046] Fig.24 for Fig. 22 A schematic diagram of a partial cross-sectional structure of the simple closing clip shown;

[0047] Fig.25 for Fig. 22 A schematic structural diagram of the simple closing clip shown in the open state;

[0048] Fig.26 for Fig. 22 A schematic diagram of the structure of the simple closing clip in a locked state;

[0049] Fig. 27 for Fig.26 Schematic diagram of the cross-sectional structure in the CC direction;

[0050] Fig.28 for Fig.26 A schematic diagram of a partial cross-sectional structure of the simple closing clip from another perspective;

[0051] Fig.29 for Fig.23 A schematic diagram of the structure of a clamping arm is shown in FIG.

[0052] Fig.30 It is a partial cross-sectional structural schematic diagram of the sixth embodiment of the simple closing clip described in the present application in an initial state;

[0053] Fig.31 It is a partial cross-sectional structural schematic diagram of the sixth embodiment of the simple closing clip described in the present application in a locked state;

[0054] Fig.32 This is a structural schematic diagram of a seventh embodiment of the simple closing clip described in the present application;

[0055] Fig.33 for Fig.32 A schematic diagram of the exploded structure of the simple closing clip shown;

[0056] Fig.34 for Fig.32 A schematic structural diagram of the simple closing clip shown in the open state;

[0057] Fig.35 for Fig.32 A schematic diagram of the structure of the simple closing clip in a locked state;

[0058] Fig.36 for Fig.35 Schematic diagram of the cross-sectional structure along the DD direction.

[0059] The reference numerals are as follows:

[0060] 10. Frame; 11. Fixed seat; 12. Connecting frame;

[0061] 20. Clamping arm; 21. Clamping portion; 22. Connecting portion; 23. Control portion; 24. Groove;

[0062] 30. Driving assembly; 31. Push-pull member; 32. Limiting part; 33. Breaking opening;

[0063] 40. Locking structure; 41. First spring piece; 411. First fixing portion; 412. First bending portion; 42. Fixing member; 421. Matching tooth; 43. Second spring piece; 431. Second fixing portion; 432. Second bending portion; 44. Connecting piece; 45. Resetting member; 46. Position-limiting rack;

[0064] 51. First part; 52. Second part; 60. Limiting member; 70. Clamping core; 80. Connecting member. DETAILED DESCRIPTION

[0065] The present application is further described in detail below through the accompanying drawings and embodiments. Through these descriptions, the characteristics and advantages of the present application will become clearer and more specific.

[0066] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field to which this application belongs; the terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions.

[0067] The "embodiment" mentioned in this application means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0068] The special word "exemplary" mentioned in this application means "used as an example, embodiment or illustrative". Among them, any embodiment described as "exemplary" is not necessarily interpreted as superior or better than other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings do not have to be drawn to scale unless otherwise specified. In the description of this application, the technical terms "first", "second", "third", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0069] In the description of this application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In the description of this application, "multiple" means more than two (including two), unless otherwise clearly and specifically limited.

[0070] In the description of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0071] The technical solutions of the embodiments of the present application are described in detail below in conjunction with the accompanying drawings. The technical features involved in the different implementation modes of the present application described below can be combined with each other as long as there is no conflict between them.

[0072] like Figures 1 to 36 As shown, the simple closing clamp provided by the present application includes: a frame 10 , two clamping arms 20 , a driving assembly 30 and two locking structures 40 .

[0073] The two clamping arms 20 are hinged and mounted on the frame 10 . The clamping arms 20 include a clamping portion 21 , a connecting portion 22 and a control portion 23 which are arranged in sequence. The two connecting portions 22 are hinged.

[0074] The driving assembly 30 is connected to the two control parts 23 respectively, and the driving assembly 30 is configured to control the clamping part 21 to rotate relative to the frame 10 .

[0075] The two locking structures 40 are respectively arranged on the two control parts 23 .

[0076] The simple closing clamp has an initial state, an open state and a locked state which change in sequence.

[0077] In the initial state, the two clamping parts 21 are closed, the two locking structures 40 are abutted against each other, and the two locking structures 40 are not connected to each other, so that the distance between the two clamping parts 21 is minimized, even if the radial dimension of one end of the simple closing clip inserted into the human body is small, so that the product is suitable for more scenarios, especially for use in narrow operating spaces.

[0078] In the open state, the two clamping parts 21 are separated from each other, and the two locking structures 40 are separated from each other. During this process, the clamping parts 21 are opened to each other to prepare for clamping human tissue, and the two locking structures 40 are ready to lock with each other.

[0079] In the locked state, the two clamping parts 21 are closed, and the two locking structures 40 are limited to each other so that the two clamping arms 20 are relatively fixed. The two locking structures 40 limit each other by themselves so that the clamping arms 20 cannot move relatively.

[0080] The simple closing clamp provided in the present application has a simple structure and does not require a complex or precise structure to achieve the mutual locking of the two clamping arms 20. On the one hand, it makes the product layout more concise, occupies less space, is easy to install and maintain, and is simple to operate. On the other hand, it reduces the complexity and failure rate of the product and improves the reliability and stability of the product.

[0081] like Figures 1 to 31 As shown, in one embodiment of the present application, a groove 24 is provided on the control part 23, and the locking structure 40 is located in the groove 24. Specifically, a groove 24 is provided on one control part 23, and the groove 24 and the outer surface of the other control part 23 form a receiving space, and the locking structure 40 is located in the receiving space. Alternatively, grooves 24 are provided on both control parts 23, and the two grooves 24 are connected to form a receiving space, and the locking structure 40 is located in the receiving space.

[0082] The recess 24 is provided as the installation space for the locking structure 40 to reasonably utilize the space on the clamping arm 20, thereby reducing the radial size of the simple closing clamp and making the product suitable for more application scenarios, especially narrow operating spaces.

[0083] like Figures 1 to 21 ,like Figure 32 to Figure 36 As shown, in one embodiment of the present application, the simple closing clip further includes a clamping core 70. The clamping core 70 is fixedly connected to the frame 10 and is located between the two clamping parts 21. The clamping core 70 is configured to cooperate with the clamping parts 21.

[0084] The two clamping arms 20 can respectively cooperate with the clamping core 70 to clamp human tissue, that is, the simple closed clamp can achieve the effect of a three-arm clamp, thereby increasing the use range of the product.

[0085] like Figures 1 to 36 As shown, in one embodiment of the present application, the driving assembly 30 includes a push-pull member 31. The push-pull member 31 is connected to the control unit 23 and can rotate relative to the control unit 23. The push-pull member 31 is provided with a breaking opening 33.

[0086] The frame 10 includes a fixing seat 11 and a connecting frame 12. The connecting frame 12 can be a spring tube. The clamping arm 20 is arranged on the fixing seat 11. The fixing seat 11 is detachably connected to the connecting frame 12 through a connecting member 80.

[0087] A limiting portion 32 is disposed on the push-pull member 31 . The limiting portion 32 is located between the connecting member 80 and the clamping arm 20 . Along the moving direction of the push-pull member 31 , the limiting portion 32 can interfere with the connecting member 80 .

[0088] When the simple closing clamp is in a locked state, the operator continues to drag the push-pull member 31 until the push-pull member 31 breaks away from the breaking opening 33, and continues to drag the push-pull member 31. When the limiting portion 32 interferes with the connecting member 80, the push-pull member 31 separates from the fixing seat 11 and the connecting frame 12 with the connecting member 80. At the same time, the fixing seat 11 separates from the connecting frame 12, leaving only the fixing seat 11 and the clamping arm 20 in the human body.

[0089] The specific operation of the simple closing clip provided in this application is as follows:

[0090] 1. The simple closing clip is in an initial state, the two clamping parts 21 are closed, and the two locking structures 40 are abutted against each other; the simple closing clip is inserted into the defect wound surface of human tissue.

[0091] 2. Push the push-pull member 31, which drives the clamping arm 20 to rotate relative to the frame 10 along the first rotation direction, so that the simple closing clamp changes from the initial state to the open state. In the open state, the two clamping parts 21 are separated and the two locking structures 40 are separated.

[0092] 3. Drag the push-pull member 31, and the push-pull member 31 drives the clamping arm 20 to rotate relative to the frame body 10 along the second rotation direction (the second rotation direction is opposite to the first rotation direction), so that the simple closing clamp changes from an open state to a locked state, and the clamping arm 20 clamps the human tissue. In the locked state, the two clamping parts 21 are closed, and the two locking structures 40 are limited to each other, so that the two clamping arms 20 are relatively fixed.

[0093] 4. The operator continues to drag the push-pull member 31 until the push-pull member 31 breaks away from the breaking opening 33, and continues to drag the push-pull member 31. When the limiting portion 32 interferes with the connecting member 80, the push-pull member 31 separates from the fixing seat 11 and the connecting frame 12 with the connecting member 80, and at the same time, the fixing seat 11 separates from the connecting frame 12, leaving only the fixing seat 11 and the clamping arm 20 in the human body.

[0094] When the simple closing clip includes a clamping core:

[0095] The clamping parts on both sides can independently cooperate with the clamping core to achieve closing, opening and locking movements. After clamping the human tissue on both sides, continue to pull the control parts on both sides at the same time, so that the locking parts on the two control parts squeeze and engage with each other, thereby locking the clamping parts on both sides. Regarding the implementation of the three-arm clamp, it needs to be explained that in the process of closing the clamping arm on one side that first clamps the tissue, since the clamping arm on the other side is movable, the clamping arm on this side can be pushed away to avoid interfering with the closing of the clamping arm; after clamping the tissue on one side and clamping it tightly, approach the tissue on the other side, and use the clamping arm on the other side and the clamping core to clamp the tissue and close it; finally, the clamping arms on both sides squeeze and lock each other.

[0096] Several embodiments of the simple closing clip are described in detail below with reference to the accompanying drawings.

[0097] Embodiment 1

[0098] like Figures 1 to 17 As shown, the simple closing clamp provided by the present application includes: a frame 10 , two clamping arms 20 , a driving assembly 30 and two locking structures 40 .

[0099] The two clamping arms 20 are hinged and mounted on the frame 10 . The clamping arms 20 include a clamping portion 21 , a connecting portion 22 and a control portion 23 which are arranged in sequence. The two connecting portions 22 are hinged.

[0100] The driving assembly 30 is connected to the two control parts 23 respectively, and the driving assembly 30 is configured to control the clamping part 21 to rotate relative to the frame 10 .

[0101] The two locking structures 40 are respectively arranged on the two control parts 23 .

[0102] Therein, at least one locking structure 40 is movable relative to the clamping arm 20 .

[0103] When the initial state is changed to the open state, the locking structure 40 moves relative to the clamping portion 21 so that the snap-fit ​​structure of the locking structure moves to the locked position, so that the snap-fit ​​structure of one locking structure can be locked with the other locking structure in the locked state; specifically, the locking structure 40 moves relative to the clamping portion 21 so that the size of the locking structure 40 in the width direction (the direction from the control portion 23 to the clamping portion 21 is the length direction, and the length direction is perpendicular to the width direction) becomes larger; or, the locking structure 40 moves relative to the clamping portion 21, the slot of the locking structure 40 faces the other locking structure, and a part of the other locking structure can be inserted into the slot so that the two locking structures are locked; or, in the initial state, parts of the two locking structures overlap; in the process of changing to the open state, one or two locking structures rotate relative to each other so that the snap-fit ​​structure of the locking structure enters the locked position; in the process of changing to the locked state, parts of the two locking structures overlap, and the snap-fit ​​structure is locked with the other locking structure.

[0104] The specific embodiment of the locking structure 40 is as follows:

[0105] One locking structure 40 is a first spring sheet 41, and the other locking structure 40 is a fixing member 42. It is understood that the fixing member 42 can be squeezed and bent relative to the first spring sheet 41. During the use of the product, the fixing member 42 will not be bent as much as the first spring sheet 41.

[0106] The first elastic piece 41 includes a first fixing portion 411 and a first bending portion 412 . The first fixing portion 411 is connected to the clamping arm 20 .

[0107] In the initial state, the first bending portion 412 abuts against the fixing member 42 and is pressed by the fixing member 42 to bend toward the first fixing portion 411 , so that the first elastic sheet 41 is in a force storage state.

[0108] From the initial state to the opening state in the process, the first bent portion 412 is separated from the fixing member 42 , and under the elastic force of the first elastic sheet 41 itself, the first bent portion 412 moves relative to the clamping arm 20 .

[0109] In the locked state, the first bent portion 412 is clamped on the fixing member 42 .

[0110] In the initial state, the first spring piece 41 is in a force storage state; in the process of changing from the initial state to the open state, the first spring piece 41 and the fixing piece 42 are gradually separated. In this process, the first spring piece 41 is gradually opened under the action of its own elastic force. When the first spring piece 41 and the fixing piece 42 are completely separated, the clamping structure of the first bent portion 412 enters the locked position; in the process of changing from the open state to the locked state, the first spring piece 41 and the fixing piece 42 are gradually in contact until the clamping structure is clamped on the fixing piece 42, even if the first spring piece 41 and the fixing piece 42 limit each other, so that the two clamping arms 20 are in a locked state.

[0111] like Fig.16 and Fig.17 As shown, in one embodiment of the present application, a limiter 60 is disposed on the clamping arm 20. The limiter 60 is disposed adjacent to the locking structure 40 and is located on the movement path of the locking structure 40. The limiter 60 is configured to limit the movement distance of the locking structure 40.

[0112] During the process of locking the two locking structures 40 together, the locking structure 40 will deform. The setting of the limiter 60 limits the deformation degree of the locking structure 40 to ensure that the locking structure 40 can return to its original state under the action of its own elastic force, thereby ensuring the reliability of the connection between the two locking structures 40.

[0113] like Figures 1 to 11As shown, in a specific embodiment of the present application, the fixing member 42 is provided with a plurality of matching teeth 421, and the clamping structure of the first bent portion 412 can be connected to the matching teeth 421. Specifically, the fixing member 42 can be a separate component, or can be an integrated structure with the clamping arm 20.

[0114] The operator can match the clamping structure with a matching tooth 421 according to the thickness of the human tissue clamped by the clamping arm 20, that is, connect the clamping structure with any matching tooth 421 as needed to achieve the locking of the two clamping arms 20. The structure of the above-mentioned fixing part 42 increases the scope of use of the product.

[0115] like Figures 12 to 15 As shown, in another specific embodiment of the present application, the fixing member 42 is a fixing plate, and a snap hook is provided on the fixing plate, and the snap hook of the first bent portion 412 is hooked with the snap hook. Specifically, the fixing plate can be a separate component, or it can be an integrated structure with the clamping arm 20 (the fixing plate is formed by cutting a part of the clamping arm 20).

[0116] The fixing plate has a simple structure and is easy to manufacture.

[0117] like Fig.16 and Fig.17 As shown, in another specific embodiment of the present application, the hook of the first bent portion 412 can be hooked onto the fixing member 42 .

[0118] The first bent portion 412 can be directly hooked onto the fixing member 42 , and has a simple structure and is easy to manufacture.

[0119] Embodiment 2

[0120] like Figures 18 to 21 As shown, the solution of the second embodiment is substantially the same as the solution of the first embodiment, and the main difference is that the two locking structures 40 are both second elastic sheets 43 .

[0121] The second elastic piece 43 includes a second fixing portion 431 and a second bending portion 432 . The second fixing portion 431 is connected to the clamping arm 20 .

[0122] In the initial state, the two second bending portions 432 abut against each other and are pressed toward the second fixing portion 431 to be bent, so that the second elastic sheet 43 is in a state of storing force.

[0123] In the process of changing from the initial state to the open state, the two second bent portions 432 are separated, and under the elastic force of the second elastic sheet 43 itself, the second bent portion 432 moves relative to the clamping arm 20 .

[0124] In the locked state, the hooks of the two second bent portions 432 are hooked with each other.

[0125] In the initial state, the two second spring sheets 43 are in a force storage state; in the process of changing from the initial state to the open state, the two second spring sheets 43 are gradually separated, and in this process, the second spring sheets 43 are gradually opened under the action of their own elastic force. When the two second spring sheets 43 are completely separated, the clamping structure of the second bending portion 432 enters the locked position; in the process of changing from the open state to the locked state, the two second spring sheets 43 gradually contact each other, and the two second spring sheets 43 are hooked together, even if the two second spring sheets 43 limit each other, so that the two clamping arms 20 are in a locked state.

[0126] Embodiment 3

[0127] like Figure 22 to Figure 32 As shown, the scheme of embodiment 3 is substantially the same as the scheme of embodiment 1, and the main difference is that the two locking structures 40 both include a connecting piece 44 and a reset piece 45, the connecting piece 44 is connected to the clamping arm 20 and can rotate relative to the clamping arm 20, and the reset piece 45 is respectively connected to the connecting piece 44 and the clamping arm 20.

[0128] In the initial state, the two connecting pieces 44 abut against each other, and the reset member 45 is in a force storage state.

[0129] In the process of changing from the initial state to the open state, the two connecting pieces 44 are separated, and under the action of the elastic force of the reset member 45 , the connecting piece 44 rotates relative to the clamping arm 20 .

[0130] In the locked state, the engaging structures of the two connecting pieces 44 are engaged with each other. Specifically, the engaging structures of the connecting pieces 44 are engaging hooks or engaging teeth.

[0131] In the initial state, the two reset members 45 are in a force storage state; in the process of changing from the initial state to the open state, the two connecting pieces 44 are gradually separated. During this process, the connecting pieces 44 are gradually opened under the action of the elastic force of the reset members 45. When the two connecting pieces 44 are completely separated, the snap-fit ​​structure of the connecting pieces 44 enters the locked position; in the process of changing from the open state to the locked state, the two connecting pieces 44 gradually contact each other, and the two connecting pieces 44 are snapped together, even if the two connecting pieces 44 limit each other, so that the two clamping arms 20 are in a locked state.

[0132] like Figures 22 to 31 As shown, in one embodiment of the present application, in the direction from the control portion 23 to the clamping portion 21 , a line connecting the rotation centers of the two connecting pieces 44 divides the space where the connecting pieces 44 are located into a first part 51 and a second part 52 .

[0133] In the process of changing from the initial state to the open state, the snap-fit ​​structure of the two connecting pieces 44 enters the second part 52 from the first part 51; rotating from the first part 51 to the second part 52 is called positive rotation, and rotating in the opposite direction to the positive rotation is called reverse rotation.

[0134] In the process of changing from the open state to the locked state, the center point of the first contact surface on the outer surfaces of the two connecting pieces 44 is located at the second portion 52 .

[0135] The above parameters require that the contact point of the two connecting pieces 44 passes through the rotation center, avoiding the two connecting pieces 44 from rotating during the contact process, resulting in the two connecting pieces 44 being unable to engage, that is, ensuring that the two connecting pieces 44 can be effectively connected during the process of changing from an open state to a locked state.

[0136] Embodiment 4

[0137] like Figure 32 to Figure 36 As shown, the simple closing clamp provided by the present application includes: a frame 10 , two clamping arms 20 , a driving assembly 30 and two locking structures 40 .

[0138] The two clamping arms 20 are hinged and mounted on the frame 10 . The clamping arms 20 include a clamping portion 21 , a connecting portion 22 and a control portion 23 which are arranged in sequence. The two connecting portions 22 are hinged.

[0139] The driving assembly 30 is connected to the two control parts 23 respectively, and the driving assembly 30 is configured to control the clamping part 21 to rotate relative to the frame 10 .

[0140] The two locking structures 40 are respectively arranged on the two control parts 23 .

[0141] The two locking structures 40 are position-limiting racks 46 disposed on the control portion 23 .

[0142] In the initial state, the two limit racks 46 abut against each other. In the open state, the two limit teeth are separated. In the locked state, the limit teeth on the two limit racks 46 mesh with each other.

[0143] In the initial state, the two limit racks 46 abut against each other; in the process of changing from the initial state to the open state, the two limit racks 46 gradually separate; in the process of changing from the open state to the locked state, the two limit racks 46 gradually contact each other, and in this process, the limit teeth on the two limit racks 46 are mutually engaged, that is, the two limit racks 46 are mutually limited, so that the two clamping arms 20 are in the locked state. The locking structure 40 is simple in structure, and can realize the mutual locking of the two clamping arms 20 without complex and precise structures.

[0144] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A simple closing clip, characterized in that: The simple closing clip comprises: Frame; Two clamping arms, the two clamping arms are hinged and installed on the frame, the clamping arm comprises a clamping part, a connecting part and a control part arranged in sequence, and the two connecting parts are hinged; A driving assembly, the driving assembly being connected to the two control parts respectively, and the driving assembly being configured to control the clamping part to rotate relative to the frame; and Two locking structures, the two locking structures are respectively arranged on the two control parts; Wherein, the simple closing clip has an initial state, an open state and a locked state which change in sequence; In the initial state, the two clamping parts are closed and the two locking structures are abutted against each other; In the open state, the two clamping parts are separated, and the two locking structures are separated; In the locked state, the two clamping parts are closed together and the two locking structures are limited to each other, so that the two clamping arms are relatively fixed.

2. The simple closing clip according to claim 1, characterized in that: at least one locking structure movable relative to the clamping arm; When the initial state is changed into the open state, the locking structure moves relative to the clamping portion.

3. The simple closing clip according to claim 2, characterized in that: One of the locking structures is a first spring sheet, and the other locking structure is a fixing member; The first elastic sheet includes a first fixing portion and a first bending portion, and the first fixing portion is connected to the clamping arm; In an initial state, the first bent portion abuts against the fixing member and is pressed by the fixing member to bend toward the first fixing portion, so that the first elastic sheet is in a force storage state; In the process of changing from the initial state to the open state, the first bent portion is separated from the fixing member, and under the action of the elastic force of the first elastic sheet itself, the first bent portion moves relative to the clamping arm; In the locked state, the first bent portion is clamped on the fixing member.

4. The simple closing clip according to claim 3, characterized in that: The hook of the first bent portion can be hooked onto the fixing member.

5. The simple closing clip according to claim 3, characterized in that: The fixing member is provided with a plurality of matching teeth, and the clamping structure of the first bending portion can be connected to the matching teeth.

6. The simple closing clip according to claim 3, characterized in that: The fixing member is a fixing plate, and a clamping hook is arranged on the fixing plate, and the clamping hook of the first bending portion is hooked with the clamping hook.

7. The simple closing clip according to claim 2, characterized in that: The two locking structures are both second spring pieces; The second elastic piece includes a second fixing portion and a second bending portion, and the second fixing portion is connected to the clamping arm; In the initial state, the two second bent portions abut against each other and are pressed toward the second fixed portion to bend, so that the second elastic sheet is in a state of storing force; In the process of changing from the initial state to the open state, the two second bent portions are separated, and under the action of the elastic force of the second elastic sheet itself, the second bent portion moves relative to the clamping arm; In the locked state, the hooks of the two second bent portions are hooked with each other.

8. The simple closing clip according to claim 2, characterized in that: The two locking structures each include a connecting piece and a reset piece, wherein the connecting piece is connected to the clamping arm and can rotate relative to the clamping arm, and the reset piece is respectively connected to the connecting piece and the clamping arm; In the initial state, the two connecting pieces are in contact with each other, and the reset member is in a force storage state; In the process of changing from the initial state to the open state, the two connecting pieces are separated, and under the action of the elastic force of the reset member, the connecting piece rotates relative to the clamping arm; In the locked state, the snap-fit ​​structures of the two connecting pieces are snap-fitted to each other.

9. The simple closing clip according to claim 8, characterized in that: In the direction from the control part to the clamping part, a line connecting the rotation centers of the two connecting pieces divides the space where the connecting pieces are located into a first part and a second part; In the process of changing from the initial state to the open state, the clamping structure of the two connecting pieces enters the second part from the first part; In the process of changing from the open state to the locked state, the center point of the first contacting surface on the outer surfaces of the two connecting pieces is located at the second part.

10. The simple closing clip according to claim 8, characterized in that: The clamping structure of the connecting piece is a clamping hook or a clamping tooth.

11. The simple closing clip according to claim 2, characterized in that: A limiting member is disposed on the clamping arm. The limiting member is disposed adjacent to the locking structure and is located on the movement path of the locking structure. The limiting member is configured to limit the movement distance of the locking structure.

12. The simple closing clip according to claim 1, characterized in that: The two locking structures are limit racks arranged on the control part; In the initial state, the two limit racks abut against each other; In the open state, the two limiting teeth are separated; In the locked state, the limiting teeth on the two limiting racks are meshed with each other.

13. The simple closing clip according to any one of claims 1 to 12, characterized in that: The control part is provided with a groove, and the locking structure is located in the groove.

14. The simple closing clip according to any one of claims 1 to 12, characterized in that: The simple closing clip further comprises: a clamping core, which is fixedly connected to the frame and located between the two clamping parts, and the clamping core is configured to cooperate with the clamping parts.

15. The simple closing clip according to any one of claims 1 to 12, characterized in that: The driving assembly comprises a push-pull member, which is connected to the control part and can rotate relative to the control part. A breaking opening is arranged on the push-pull member.

16. The simple closing clip according to claim 15, characterized in that: The frame includes a fixing seat and a connecting frame; The clamping arm is arranged on the fixing seat; The fixing seat is detachably connected to the connecting frame via a connecting piece; A limiting portion is provided on the push-pull member, and the limiting portion is located between the connecting member and the clamping arm. Along the moving direction of the push-pull member, the limiting portion can interfere with the connecting member.

Images