Locking mechanism and blood vessel bandage

Abstract

The utility model provides a locking mechanism and a blood vessel bandage, and relates to the technical field of medical instruments. The locking mechanism comprises a base plate, a clamping plate and a driving assembly. The substrate is used for being connected with a strip and is provided with a through groove for the strip to pass through; the base plate is rotationally connected with the clamping plate, a plurality of first meshing teeth and a plurality of second meshing teeth are arranged on the opposite surfaces of the clamping plate and the base plate respectively, and an included angle is formed between the orientation of the first meshing teeth and the orientation of the second meshing teeth; the driving assembly is installed on the base plate and is in transmission connection with the clamping plate to drive the clamping plate to drive the first meshing teeth to be meshed with or separated from the second meshing teeth. The locking mechanism solves the technical problems that in the prior art, an instrument used for tightening the blood vessel is inconvenient to use, and the blood vessel is prone to being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a locking mechanism and a blood vessel binding band. Background Art

[0002] In surgical operations, such as abdominal surgery, it is necessary to tie the blood vessels tightly before cutting them off to prevent blood from spurting out and flowing out after cutting them off. In the prior art, the blood vessels are clamped by blocking forceps or tied up with cable ties.

[0003] The method of clamping the blood vessel with a blocking clamp is simple to operate, but because the cross-sectional shape of the blocking clamp is mostly flat and there are tooth-like protrusions on the clamp head, the clamping force depends on the control of the degree of closure of the clamp head, which can easily cause damage or rupture of the blood vessel during the clamping process. The method of tying the blood vessel with a cable tie, the shape of the cable tie after binding is round. Although it can match the shape of the blood vessel, the cable tie is mostly tightened in one direction, and it is not easy to control the tightening force of the blood vessel. If the force is too loose, the blood vessel cannot be tightened and bleeding may occur. If the force is too strong, the blood vessel tissue may be necrotized. Utility Model Content

[0004] The utility model aims to provide a locking mechanism and a blood vessel binding band to alleviate the technical problems in the prior art that the devices used to bind blood vessels are inconvenient to use and are prone to cause blood vessel damage.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is:

[0006] In a first aspect, the locking mechanism provided by the utility model comprises a base plate, a clamping plate and a driving assembly; the base plate is used to connect with the strip and is provided with a through slot for the strip to pass through;

[0007] The base plate is rotatably connected to the clamping plate, and the surfaces of the clamping plate and the base plate facing each other are respectively provided with a plurality of first meshing teeth and a plurality of second meshing teeth, and the orientation of the first meshing teeth and the orientation of the second meshing teeth are arranged at an angle;

[0008] The driving assembly is mounted on the base plate and is drivingly connected to the clamping plate to drive the clamping plate to drive the first meshing teeth to mesh with or separate from the second meshing teeth.

[0009] Furthermore, the plurality of first meshing teeth are parallel to each other, and the plurality of second meshing teeth are parallel to each other.

[0010] Furthermore, the clamping plate is rotatably connected to the base plate via a rotating shaft;

[0011] The driving assembly includes a pressing rod, a first elastic member and a second elastic member, wherein the first elastic member is sleeved on the rotating shaft and drives the first meshing tooth to mesh with the second meshing tooth;

[0012] The axis of the pressing rod is parallel to the axis of the rotating shaft, the pressing rod is slidably matched with the base plate and the clamping plate along the axial direction of the rotating shaft, and has a driving part, and the cross section of the driving part gradually increases from one end close to the middle of the pressing rod to one end away from the middle of the pressing rod;

[0013] One end of the second elastic member is connected to the base plate, and the other end is connected to the pressing rod.

[0014] Furthermore, the base plate is provided with a limiting hole, and the axis of the limiting hole is parallel to the rotating shaft;

[0015] The pressing rod is installed in the limiting hole.

[0016] Furthermore, a limiting sleeve is installed at one end of the limiting hole, and a fixing block is installed at the other end;

[0017] One end of the pressing rod extends out of the limiting sleeve and is slidably matched with the limiting sleeve, and the other end is connected to the second elastic member;

[0018] The second elastic member abuts against the fixing block.

[0019] Furthermore, a limiting protrusion is provided at one end of the pressing rod away from the second elastic member, and when the first meshing tooth is meshed with the second meshing tooth, the limiting protrusion abuts against the limiting sleeve.

[0020] Furthermore, the clamping plate includes a first engaging portion and a connecting portion;

[0021] The first meshing portion is provided with the first meshing teeth and is connected to the connecting portion;

[0022] The connecting portion is rotationally connected to the base plate and transmission-connected to the driving assembly.

[0023] Furthermore, an end of the connecting portion facing away from the first engaging portion is provided with a limiting plane that cooperates with the driving assembly.

[0024] Furthermore, the base plate includes a second engaging portion and a mounting portion;

[0025] The second meshing portion is provided with the second meshing teeth and is connected to the mounting portion;

[0026] The mounting portion is used to connect with the strip, and a mounting groove is provided on the side wall close to the second engaging portion, and the through groove is provided on the bottom wall of the mounting groove, and the connecting portion is inserted into the mounting groove and rotatably connected with the side wall of the mounting groove;

[0027] The driving assembly is installed in the installation portion and is transmission-connected with the connecting portion.

[0028] In a second aspect, the vascular bandage provided by the utility model comprises a strip and a locking mechanism as described in any one of the above items;

[0029] One end of the strip is connected to the base plate in the locking mechanism, and the other end passes through between the clamping plate in the locking mechanism and the base plate and then extends out of the through slot of the base plate.

[0030] Based on the above technical solutions, the technical effects that can be achieved by the present invention are analyzed as follows:

[0031] The locking mechanism provided by the utility model comprises a base plate, a clamping plate and a driving assembly; the base plate is used to connect with the strip and is provided with a through groove for the strip to pass through; the base plate is rotatably connected with the clamping plate, and the surfaces of the clamping plate and the base plate facing each other are respectively provided with a plurality of first meshing teeth and a plurality of second meshing teeth, and the orientation of the first meshing teeth and the orientation of the second meshing teeth are arranged at an angle; the driving assembly is installed on the base plate and is transmission-connected with the clamping plate to drive the clamping plate to drive the first meshing teeth to engage or separate with the second meshing teeth.

[0032] The locking mechanism can be applied to a vascular bandage. When the vascular bandage is not in use, one end of the bandage is connected to the base plate, and the other end is a free end, and the first meshing tooth and the second meshing tooth are in a mutually meshing state. When the vascular bandage is in use, the operator drives the driving component to separate the first meshing tooth and the second meshing tooth, and passes the free end of the bandage through between the first meshing tooth and the second meshing tooth and then extends out of the through slot. The operator operates the driving component to mesh the first meshing tooth and the second meshing tooth to clamp the bandage. The bandage is used to bind the blood vessel, and the shape formed by the bandage matches the shape of the blood vessel, so that the vascular bandage has the function of binding the blood vessel and avoids the problem of damaging the blood vessel during binding. When the tightness of the vascular bandage needs to be adjusted, the operator drives the driving component to separate the first meshing tooth and the second meshing tooth, and adjusts the length of the strip extending out of the through slot after passing between the first meshing tooth and the second meshing tooth until the tightness is appropriate; the operator operates the driving component to mesh the first meshing tooth and the second meshing tooth to clamp the strip again; the locking mechanism is used to control the effective length of the strip and the blood vessel, so as to facilitate the adjustment of the tightness and avoid problems such as vascular cell necrosis caused by one-way tightening. The direction of the first meshing tooth and the direction of the second meshing tooth are set at an angle, which is different from the traditional upper and lower tooth meshing. When the strip is located between the upper and lower teeth, the strip is constrained only by friction. External force pulling the strip may pull the strip out from between the upper and lower teeth and damage it; when the first meshing tooth and the second meshing tooth are meshed, the tooth tip of the second meshing tooth abuts against the side wall of the first meshing tooth. Similarly, the tooth tip of the first meshing tooth abuts against the side wall of the second meshing tooth. There is line contact between the first meshing tooth and the second meshing tooth, so that there is enough space for the strip between the first meshing tooth and the second meshing tooth, and the extrusion force and friction force are used to constrain the strip at the same time, thereby improving the locking effect of the strip and avoiding the problem that the strip can be pulled out from between the first meshing tooth and the second meshing tooth and cause damage to the strip.

[0033] The locking mechanism uses a driving component to control the engagement or separation of the first meshing tooth and the second meshing tooth, thereby clamping or loosening an object extending between the first meshing tooth and the second meshing tooth. The structure is simple and easy to adjust. Moreover, since the orientation of the first meshing tooth and the orientation of the second meshing tooth are set at an angle, damage to the object extending between the two is avoided and the clamping force is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific implementation methods of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1A schematic diagram of the structure of a vascular bandage provided by an embodiment of the utility model;

[0036] Figure 2 A schematic diagram of the structure of the locking mechanism provided in the embodiment of the utility model when it is relaxed;

[0037] Figure 3 A schematic diagram of the structure of the locking mechanism provided in the embodiment of the utility model when engaged;

[0038] Figure 4 A schematic diagram of the internal structure of the locking mechanism provided by an embodiment of the utility model;

[0039] Figure 5 A schematic diagram of a driving component in a locking mechanism provided by an embodiment of the utility model when the driving component is not driven by an external force;

[0040] Figure 6 A schematic diagram of a driving component in a locking mechanism provided by an embodiment of the utility model being driven by an external force;

[0041] Figure 7 A schematic diagram of the structure of a clamping plate in a locking mechanism provided by an embodiment of the utility model at a first viewing angle;

[0042] Figure 8 A schematic diagram of the structure of a clamping plate in a locking mechanism provided by an embodiment of the utility model at a second viewing angle;

[0043] Fig. 9 A schematic diagram of the structure of a base plate in a locking mechanism provided by an embodiment of the utility model at a first viewing angle;

[0044] Fig.10 A schematic diagram of the internal structure of a base plate in a locking mechanism provided in an embodiment of the utility model;

[0045] Fig.11 A schematic diagram of the structure of a base plate in a locking mechanism provided by an embodiment of the utility model at a second viewing angle;

[0046] Fig.12 A schematic structural diagram of a strip of a vascular bandage provided in an embodiment of the utility model.

[0047] icon:

[0048] 100-base plate; 110-second meshing tooth; 120-rotating shaft; 130-limiting hole; 140-limiting sleeve; 150-fixing block; 160-second meshing portion; 170-mounting portion; 171-mounting groove; 172-through groove;

[0049] 200- clamping plate; 210- first meshing tooth; 220- first meshing portion; 230- connecting portion; 231- limiting plane; 240- blind hole;

[0050] 310 - pressing rod; 320 - first elastic member; 330 - second elastic member; 340 - driving part; 350 - limiting protrusion;

[0051] 400-strips. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0053] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. 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.

[0054] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0055] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply 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 a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0056] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0057] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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.

[0058] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0059] Embodiment 1

[0060] The locking mechanism provided by the utility model includes a base plate 100, a clamping plate 200 and a driving assembly; the base plate 100 is used to connect with the strip 400, and is provided with a through groove 172 for the strip 400 to pass through; the base plate 100 is rotatably connected with the clamping plate 200, and the surfaces of the clamping plate 200 and the base plate 100 facing each other are respectively provided with a plurality of first meshing teeth 210 and a plurality of second meshing teeth 110, and the orientation of the first meshing teeth 210 and the orientation of the second meshing teeth 110 are set at an angle; the driving assembly is installed on the base plate 100, and is transmission-connected with the clamping plate 200, so as to drive the clamping plate 200 to drive the first meshing teeth 210 to engage or separate with the second meshing teeth 110.

[0061] Specifically, see Figure 2 and Figure 3 The first meshing teeth 210 and the second meshing teeth 110 are both inclined, and the inclination angles are different, so that when the first meshing teeth 210 and the second meshing teeth 110 are meshed, the tooth tip of the first meshing teeth 210 abuts against the side wall of the second meshing teeth 110. Preferably, the tooth tips of the first meshing teeth 210 and the second meshing teeth 110 are both arc-shaped to avoid scratching the strip 400.

[0062] This locking mechanism can be applied to vascular bandages, see Figure 3 When the vascular bandage is not in use, one end of the strip 400 is connected to the base plate 100, and the other end is a free end, and the first meshing teeth 210 and the second meshing teeth 110 are in a mutually meshing state; see Figure 1 and Figure 2When using the vascular bandage, the operator drives the driving assembly to separate the first meshing tooth 210 and the second meshing tooth 110, and passes the free end of the strip 400 through the first meshing tooth 210 and the second meshing tooth 110 and then extends out of the through slot 172; the operator operates the driving assembly to mesh the first meshing tooth 210 and the second meshing tooth 110 to clamp the strip 400; the strip 400 is used to bind the blood vessel, and the shape formed by the strip 400 matches the shape of the blood vessel, so that the vascular bandage has the function of binding the blood vessel and avoids the problem of damaging the blood vessel during binding. When the tightness of the vascular bandage needs to be adjusted, the operator drives the driving assembly to separate the first meshing tooth 210 and the second meshing tooth 110, and adjusts the length of the strip 400 extending through the through slot 172 after passing between the first meshing tooth 210 and the second meshing tooth 110 until the tightness is appropriate; the operator operates the driving assembly to mesh the first meshing tooth 210 and the second meshing tooth 110, and clamps the strip 400 again; the locking mechanism is used to control the effective length of the strip 400 cooperating with the blood vessel, so as to facilitate the adjustment of the tightness and avoid problems such as vascular cell necrosis caused by one-way tightening. The orientation of the first meshing tooth 210 and the orientation of the second meshing tooth 110 are set at an angle, which is different from the conventional upper and lower tooth meshing. When the strip 400 is located between the upper and lower teeth, the strip 400 is only constrained by friction. The strip 400 may be pulled out from between the upper and lower teeth and damaged by external force. When the first meshing tooth 210 is meshed with the second meshing tooth 110, the tooth tip of the second meshing tooth 110 abuts against the side wall of the first meshing tooth 210. Similarly, the first meshing tooth 210 is meshed with the second meshing tooth 110. The tooth tip of 10 abuts against the side wall of the second meshing tooth 110, and there is line contact between the first meshing tooth 210 and the second meshing tooth 110, so that there is enough space between the first meshing tooth 210 and the second meshing tooth 110 for the strip 400, and at the same time, the extrusion force and the friction force are used to restrain the strip 400, thereby improving the locking effect of the strip 400 and avoiding the problem that the strip 400 can be pulled out from between the first meshing tooth 210 and the second meshing tooth 110, causing damage to the strip 400.

[0063] The locking mechanism uses a driving component to control the engagement or separation of the first meshing tooth 210 and the second meshing tooth 110, thereby clamping or loosening an object inserted between the first meshing tooth 210 and the second meshing tooth 110. The structure is simple and easy to adjust. Moreover, since the orientation of the first meshing tooth 210 and the orientation of the second meshing tooth 110 are set at an angle, damage to the object inserted between the two is avoided and the clamping force is improved.

[0064] The shape and structure of the locking mechanism are described in detail below:

[0065] In an optional solution of the embodiment of the present utility model, the plurality of first meshing teeth 210 are parallel to each other, and the plurality of second meshing teeth 110 are parallel to each other.

[0066] Specifically, in this embodiment, the shapes and sizes of the plurality of first meshing teeth 210 are equal, and the shapes and sizes of the plurality of second meshing teeth 110 are equal.

[0067] The plurality of first meshing teeth 210 are parallel to each other, and the plurality of second meshing teeth 110 are parallel to each other, which facilitates the processing of the first meshing teeth 210 and the second meshing teeth 110 and avoids the problem of being unable to mesh due to slight misalignment due to different angles.

[0068] In an optional scheme of an embodiment of the utility model, the splint 200 is rotatably connected to the base plate 100 via a rotating shaft 120; the driving assembly includes a pressing rod 310, a first elastic member 320 and a second elastic member 330, the first elastic member 320 is sleeved on the rotating shaft 120, and drives the first meshing tooth 210 to mesh with the second meshing tooth 110; the axis of the pressing rod 310 is parallel to the axis of the rotating shaft 120, the pressing rod 310 is slidably matched with the base plate 100 and the splint 200 along the axial direction of the rotating shaft 120, and has a driving part 340, the driving part 340 has a cross-section that gradually increases from one end close to the middle of the pressing rod to the end away from the middle of the pressing rod; one end of the second elastic member 330 is connected to the base plate 100, and the other end is connected to the pressing rod 310.

[0069] Specifically, the rotating shaft 120 is installed on the base plate 100 and is sleeved on the clamping plate 200 to realize the rotation connection between the clamping plate 200 and the base plate 100. The first elastic member 320 is set as a torsion spring, which is sleeved on the rotating shaft 120, and the two branches are respectively connected to the rotating shaft 120 and the clamping plate 200; when the first meshing tooth 210 and the second meshing tooth 110 are meshed, the torsion spring is in an initial state, and when the external force drives the first meshing tooth 210 and the second meshing tooth 110 to separate, the torsion spring is elastically deformed, and after the external force is removed, the torsion spring returns to its original shape and resets the clamping plate 200, thereby restoring the first meshing tooth 210 and the second meshing tooth 110 to the meshing state. Furthermore, the clamping plate 200 is provided with a blind hole 240, and one branch of the torsion spring is inserted into the blind hole 240. The second elastic member 330 is configured as a spring, and the two ends of the spring are connected to the pressing rod 310 and the base plate 100 respectively; when the pressing rod 310 is driven by an external force to squeeze the spring axially, the spring is elastically deformed, and after the external force is removed, the spring returns to its original shape and resets the pressing rod 310, thereby realizing the automatic reset of the pressing rod 310. The pressing rod 310 has a driving portion 340, and when the pressing rod 310 is moved by an external force, the cross-sectional area of ​​the driving portion 340 in contact with the clamping plate 200 changes, so that the clamping plate 200 rotates around the rotating shaft 120, thereby separating the first meshing teeth 210 and the second meshing teeth 110. Preferably, the pressing rod 310 is configured as a cylinder, and the diameter of the driving portion 340 gradually increases from one end close to the middle of the pressing rod to one end away from the middle of the pressing rod.

[0070] See also Figure 4The operation process of the driving assembly is as follows: the external force presses the pressing rod 310 to move downward in the axial direction, and the diameter of the driving part 340 in contact with the clamping plate 200 gradually increases, pushing the clamping plate 200 to rotate around the rotating shaft 120, so that the first meshing tooth 210 and the second meshing tooth 110 are separated, and the torsion spring and the spring are deformed at the same time; after the external force is removed, the spring returns to its original shape, so that the pressing rod 310 is reset upward; when the pressing rod 310 is reset, the diameter of the driving part 340 in contact with the clamping plate 200 gradually decreases, so that the torsion spring gradually returns to its original shape, driving the clamping plate 200 to rotate around the rotating shaft 120 in the opposite direction, and then the first meshing tooth 210 and the second meshing tooth 110 are meshed. The driving assembly uses the torsion spring and the spring to realize the automatic reset of the clamping plate 200 and the pressing rod 310.

[0071] In an optional solution of the embodiment of the utility model, the base plate 100 is provided with a limiting hole 130 , the axis of the limiting hole 130 is parallel to the rotating shaft 120 ; the pressing rod 310 is installed in the limiting hole 130 .

[0072] Specifically, the limiting hole 130 passes through the base plate 100 , and the limiting hole 130 provides a receiving function for the pressing rod 310 .

[0073] The pressing rod 310 is installed in the limiting hole 130 , so that the pressing rod 310 is installed inside the base plate 100 , thereby reducing the space occupied by the locking mechanism.

[0074] In an optional scheme of an embodiment of the utility model, a limiting sleeve 140 is installed at one end of the limiting hole 130, and a fixing block 150 is installed at the other end; one end of the pressing rod 310 extends out of the limiting sleeve 140 and slides with the limiting sleeve 140, and the other end is connected to the second elastic member 330; the second elastic member 330 abuts against the fixing block 150.

[0075] Specifically, the limiting sleeve 140 is clamped to the base plate 100 , and the fixing block 150 is bonded or clamped to the base plate 100 .

[0076] One end of the pressing rod 310 extends out of the limiting sleeve 140, so that the operator can press the pressing rod 310. The limiting sleeve 140 is slidably matched with the pressing rod 310 to guide the movement direction of the pressing rod 310.

[0077] In an optional solution of the embodiment of the utility model, a limiting protrusion 350 is provided at one end of the pressing rod 310 away from the second elastic member 330 , and when the first meshing teeth 210 and the second meshing teeth 110 are meshed, the limiting protrusion 350 abuts against the limiting sleeve 140 .

[0078] Specifically, see Figure 5 and Figure 6 The pressing rod 310 includes a limiting protrusion 350 , a driving portion 340 and a middle portion from top to bottom, and the limiting protrusion 350 protrudes outward from the outer peripheral wall of the pressing rod 310 .

[0079] The pressing rod 310 is reset until the limiting protrusion 350 abuts against the limiting sleeve 140 , so that the pressing rod 310 is bound in the substrate 100 to prevent the pressing rod 310 from being separated from the substrate 100 .

[0080] In an optional solution of the embodiment of the utility model, the splint 200 includes a first meshing portion 220 and a connecting portion 230; the first meshing portion 220 is provided with a first meshing tooth 210 and is connected to the connecting portion 230; the connecting portion 230 is rotationally connected to the base plate 100 and is transmission-connected to the driving assembly.

[0081] Specifically, see Figure 7 and Figure 8 , the width of the connecting portion 230 is smaller than the width of the clamping plate 200. Preferably, the first engaging portion 220 and the connecting portion 230 are integrally formed.

[0082] The first meshing portion 220 enables the clamping plate 200 to have the first meshing teeth 210 , and the connecting portion 230 enables the clamping plate 200 to be rotatably connected to the base plate 100 and to be transmission-connected to the driving assembly.

[0083] In an optional solution of the embodiment of the utility model, a limiting plane 231 cooperating with the driving assembly is provided at one end of the connecting portion 230 away from the first engaging portion 220 .

[0084] Specifically, see Figures 5 to 7 , the pressing rod 310 is pressed downward, the driving part 340 contacts the limiting plane 231, and as the diameter of the driving part 340 gradually increases, the clamping plate 200 is squeezed and rotates around the rotating shaft 120, and the first meshing teeth 210 and the second meshing teeth 110 are separated; the pressing rod 310 is released, and the clamping plate 200 is reset under the action of the torsion spring. Furthermore, the rotating shaft 120 is located at one end of the connecting part 230 close to the first meshing part 220.

[0085] The limiting plane 231 increases the contact area with the driving part 340 and improves the transmission stability.

[0086] In an optional scheme of an embodiment of the utility model, the substrate 100 includes a second meshing portion 160 and a mounting portion 170; the second meshing portion 160 is provided with a second meshing tooth 110 and is connected to the mounting portion 170; the mounting portion 170 is used to connect with the strip 400, and a mounting groove 171 is provided on the side wall close to the second meshing portion 160, and a through groove 172 is provided on the bottom wall of the mounting groove 171, and the connecting portion 230 is inserted into the mounting groove 171 and rotatably connected to the side wall of the mounting groove 171; the driving assembly is installed in the mounting portion 170 and is transmission-connected to the connecting portion 230.

[0087] Specifically, see Figures 9 to 11The second engagement portion 160 and the mounting portion 170 are integrally formed. The mounting groove 171 is communicated with the limiting hole 130, the connecting portion 230 is inserted into the mounting groove 171, and the limiting plane 231 abuts against the pressing portion.

[0088] The second meshing portion 160 enables the base plate 100 to have the second meshing teeth 110 , and the mounting portion 170 realizes the rotational connection between the clamping plate 200 and the base plate 100 , and the driving assembly is mounted.

[0089] Embodiment 2

[0090] The vascular binding band provided in the embodiment of the utility model includes the locking mechanism described in the first embodiment, and therefore, also has all the beneficial effects in the first embodiment, which will not be described in detail here.

[0091] In an optional solution of the embodiment of the utility model, the vascular bandage includes a strip 400, one end of which is connected to the base plate 100 in the locking mechanism, and the other end passes through between the clamp 200 in the locking mechanism and the base plate 100 and then extends out of the through slot 172 of the base plate 100.

[0092] Specifically, see Figure 1 , the strip 400 is fixedly connected to the substrate 100. For further information, see Fig.12 The strip 400 meshed by the first meshing teeth 210 and the second meshing teeth 110 is wavy and is fixed under the extrusion force and friction force of the first meshing teeth 210 and the second meshing teeth 110 , and will not be scratched by the tooth tips when adjusting the length of the strip 400 .

[0093] When using the blood vessel bandage, the strip 400 is wrapped around the outside of the blood vessel, the pressing rod 310 is pressed, and the free end of the strip 400 is passed through the first meshing tooth 210 and the second meshing tooth 110, and then extends out of the through slot 172; the strip 400 is pulled to tighten the blood vessel, and the pressing rod 310 is released to lock the strip 400. After use, the pressing rod 310 is pressed to pull out the strip 400. When the blood vessel bandage is tightened, it matches the shape of the blood vessel and will not hurt the blood vessel; moreover, the strip 400 can be advanced or retreated, and the operation is simple.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A locking mechanism, characterized in that: include: A base plate (100), a clamping plate (200) and a driving assembly; the base plate (100) is used to connect with a strip (400) and is provided with a through slot (172) for the strip (400) to pass through; The base plate (100) is rotatably connected to the clamping plate (200); surfaces of the clamping plate (200) and the base plate (100) facing each other are respectively provided with a plurality of first meshing teeth (210) and a plurality of second meshing teeth (110); the orientation of the first meshing teeth (210) and the orientation of the second meshing teeth (110) are arranged at an angle; The driving assembly is mounted on the base plate (100) and is transmission-connected to the clamping plate (200) so as to drive the clamping plate (200) to drive the first meshing teeth (210) to mesh with or separate from the second meshing teeth (110).

2. The locking mechanism according to claim 1, characterized in that: The plurality of first meshing teeth (210) are parallel to each other, and the plurality of second meshing teeth (110) are parallel to each other.

3. The locking mechanism according to claim 1, characterized in that: The clamping plate (200) is rotatably connected to the base plate (100) via a rotating shaft (120); The driving assembly comprises a pressing rod (310), a first elastic member (320) and a second elastic member (330); the first elastic member (320) is sleeved on the rotating shaft (120) and drives the first meshing tooth (210) to mesh with the second meshing tooth (110); The axis of the pressing rod (310) is parallel to the axis of the rotating shaft (120), the pressing rod (310) is slidably matched with the base plate (100) and the clamping plate (200) along the axial direction of the rotating shaft (120), and has a driving part (340), and the cross section of the driving part (340) gradually increases from one end close to the middle of the pressing rod to one end away from the middle of the pressing rod; One end of the second elastic member (330) is connected to the base plate (100), and the other end is connected to the pressing rod (310).

4. The locking mechanism according to claim 3, characterized in that: The base plate (100) is provided with a limiting hole (130), and the axis of the limiting hole (130) is parallel to the rotating shaft (120); The pressing rod (310) is installed in the limiting hole (130).

5. The locking mechanism according to claim 4, characterized in that: A limiting sleeve (140) is installed at one end of the limiting hole (130), and a fixing block (150) is installed at the other end; One end of the pressing rod (310) extends out of the limiting sleeve (140) and is slidably matched with the limiting sleeve (140), and the other end is connected to the second elastic member (330); The second elastic member (330) abuts against the fixing block (150).

6. The locking mechanism according to claim 5, characterized in that: A limiting protrusion (350) is provided at one end of the pressing rod (310) away from the second elastic member (330), and when the first meshing tooth (210) is meshed with the second meshing tooth (110), the limiting protrusion (350) abuts against the limiting sleeve (140).

7. The locking mechanism according to claim 1, characterized in that: The clamping plate (200) comprises a first meshing portion (220) and a connecting portion (230); The first meshing portion (220) is provided with the first meshing teeth (210) and is connected to the connecting portion (230); The connecting portion (230) is rotationally connected to the base plate (100) and is transmission-connected to the driving assembly.

8. The locking mechanism according to claim 7, characterized in that: One end of the connecting portion (230) facing away from the first engaging portion (220) is provided with a limiting plane (231) that cooperates with the driving assembly.

9. The locking mechanism according to claim 7, characterized in that: The base plate (100) comprises a second engaging portion (160) and a mounting portion (170); The second meshing portion (160) is provided with the second meshing teeth (110) and is connected to the mounting portion (170); The mounting portion (170) is used to connect with the strip (400), and a mounting groove (171) is provided on the side wall close to the second meshing portion (160), and the bottom wall of the mounting groove (171) is provided with the through groove (172), and the connecting portion (230) is inserted into the mounting groove (171) and rotatably connected with the side wall of the mounting groove (171); The driving assembly is installed in the installation portion (170) and is drivingly connected to the connection portion (230).

10. A vascular bandage, characterized in that: comprising a strip (400) and a locking mechanism as claimed in any one of claims 1 to 9; One end of the strip (400) is connected to the base plate (100) in the locking mechanism, and the other end passes through between the clamping plate (200) in the locking mechanism and the base plate (100) and then extends out of the through slot (172) of the base plate (100).

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