Clamping device and clamping assembly thereof
By designing a clamping assembly with double locking function in a medical clamping device, the structure of the connecting rod and deformable boss is used to solve the problem of poor clamping stability, achieving higher stability and safety, and reducing the Surgical complexity and medical costs.
Patent Information
- Application Number
- CN202422911329.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-11-28
AI Technical Summary
The existing medical clamping devices have poor stability after clamping and are prone to fall off, which increases the duration of surgical operations and the pain of patients and medical expenses.
A clamping assembly with double locking function is designed. Through the connection between the connecting rod and the clamping arm seat, combined with a deformable boss and a stopper, the clamping arm is ensured stably closed, and the clamping arm is realized by operating the assembly. Reliable locking.
Improves the stability of clamping, reduces surgical operation duration and patient pain, reduces medical expenses, and ensures the reliability and safety of clamping components.
Smart Images
Figure CN222265326U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, in particular to a clamping device and a clamping component thereof. Background Art
[0002] Natural cavities such as the digestive tract, respiratory tract, and urethra are common sites of human diseases. In the treatment of natural cavity diseases, flexible endoscope interventional treatment is widely used due to its advantages of small wounds, mild pain, fast recovery, and short hospitalization time. For active bleeding in the stomach and intestines of the human body, drug spraying, electrosurgical coagulation, or mechanical compression hemostasis is generally required. Among them, the effect of compression hemostasis is relatively more reliable and has been generally recognized by doctors and patients.
[0003] Mechanical clamping devices are generally called hemostatic clamps, which usually include a clamp part and an introduction part. In actual applications, the clamp part and the introduction part are sent into the patient's digestive tract through the clamp channel of the endoscope. When the front clamp reaches the position where the patient needs to be operated on, the control action can be transmitted to the clamp part through the introduction part to achieve the opening or closing of the clamp. After the clamp closing action is completed, the introduction part is removed, and the clamp part will remain in the human body.
[0004] In the related technology, there are many varieties of hemostatic clips with great differences in functions. If the hemostatic clips are unstable and easy to fall off after clamping, it will increase the operation time, and will also increase the pain of the patients and increase medical expenses.
[0005] In view of this, it is urgent to optimize the design of the medical clamping device to overcome the above-mentioned defects. Utility Model Content
[0006] The purpose of the present application is to provide a clamping device and a clamping assembly thereof, which can effectively improve the clamping stability through structural optimization.
[0007] The clamping assembly provided in the embodiment of the present application is used to adapt to the operating assembly, and the clamping assembly includes two clamping arms that can be opened and closed relative to each other, as well as two connecting rods and a clamping arm seat; a first sliding groove and a first hinge hole are provided on the clamping arm, and the first sliding groove is close to the front end of the clamping arm relative to the first hinge hole; a second hinge hole and a second sliding groove are provided on the clamping arm seat, and the second hinge hole is close to the front end of the clamping arm seat relative to the second sliding groove; a first connecting pin is inserted in the first sliding groove of the two clamping arms, the first connecting pin can move in the first sliding groove, and the first connecting pin is rotatably connected to the second hinge hole on the clamping arm seat; the first hinge hole of each clamping arm is rotatably connected to one end of the corresponding connecting rod through the second connecting pin The second end of the second connecting rod is rotatably connected through a third connecting pin, and the third connecting pin is inserted in the second sliding groove of the clamp arm seat and can move in the second sliding groove; a deformable first boss is provided on the slot wall of the first sliding groove, the first boss extends toward the front end of the clamp arm, and the extending end of the first boss has a first stop portion, and the first stop portion can limit the first connecting pin located at the front end of the first sliding groove to move backward; a deformable second boss is provided on the slot wall of the second sliding groove, the second boss extends toward the rear end of the clamp arm seat, and the extending end of the second boss has a second stop portion, and the second stop portion can limit the third connecting pin located at the rear end of the second sliding groove to move forward.
[0008] Optionally, the first boss further has a first pressing surface, and the first connecting pin located at the rear end of the first slide groove can press against the first pressing surface until the first boss is deformed to move to the front end of the first slide groove.
[0009] Optionally, the second boss further has a second pressing surface, and the third connecting pin located at the front of the second slide slot can press against the second pressing surface until the second boss is deformed to move to the rear end of the second slide slot.
[0010] Optionally, the number of the first bosses is two and they are respectively arranged on the two side walls of the first chute; the number of the second bosses is two and they are respectively arranged on the two side walls of the second chute.
[0011] Optionally, the two first bosses are symmetrically arranged on both sides of the first sliding groove, and the two second bosses are symmetrically arranged on both sides of the second sliding groove.
[0012] Optionally, the clamp arm seat is cylindrical, and the second sliding groove is arranged through the side wall of the clamp arm seat.
[0013] Optionally, through slots are respectively provided at relative positions of the side walls of the clamp arm seat, and when the clamp arm is in an open state, the second connecting pin and the connecting ends of the connecting rod and the clamp arm extend out of the through slots on corresponding sides.
[0014] The utility model also provides a clamping device, which includes a clamping assembly and an operating assembly, wherein the operating assembly is detachably connected to the clamping assembly; the clamping assembly is the clamping assembly described above; the operating assembly drives the clamping assembly to rotate through a control line, and drives the two clamping arms of the clamping assembly to open or close.
[0015] Optionally, the operating assembly includes a detacher, a detachment seat and a handle assembly, the detacher is inserted into the detachment seat, and the front end of the detacher has a bayonet for being fixedly engaged with the first connecting pin; the front end of the control line is fixedly connected to the detacher, and the rear end of the control line is connected to the handle assembly to control the rotation, extension or retraction of the control line.
[0016] Optionally, it also includes a rotating ring, an ejector tube and a deformation sheet, the rotating ring is nested between the disconnector and the disconnection seat, and the rotating ring is rotatably connected to the disconnection seat; the control line is fixedly connected by a connecting tube sleeved on the front end of the control line and the rear end of the disconnector; the body of the deformation sheet is U-shaped, the bottom structure of the body of the deformation sheet is sleeved on the outside of the control line, the front ends of the two side structures of the deformation sheet are bent back to back to form an extended end, the two extended ends extend through the side wall of the rotating ring, and are inserted into the limiting openings of the clamp arm seat on the corresponding side; the ejector tube is sleeved on the disconnector, and the disconnector located on the front side of the ejector tube has a convex portion, the rear end face of the convex portion is arranged opposite to the front end face of the ejector tube, the rear end face of the ejector tube is arranged opposite to the bottom structure of the body of the deformation sheet sleeved on the outside of the connecting tube, and the two side structures of the deformation sheet are located between the ejector tube and the rotating ring.
[0017] Optionally, the handle assembly includes a controller, a holder and a docking ring, the control line is covered with an outer sleeve on the outside, and the docking ring is connected to the disengagement seat through the outer sleeve; the holder is rotatably connected to the docking ring to control the rotation of the control line; the controller is connected to the control line, the controller is covered on the front part of the holder, and the holder has a slide groove for the controller to move forward and backward relative to the holder to control the forward and backward movement of the control line.
[0018] Compared with the prior art, the utility model provides a clamping assembly with a double locking function. Specifically, the two clamping arms of the clamping assembly are connected to the clamping arm seat through a connecting rod; the clamping arm is provided with a first slide groove and a first hinge hole, the groove wall of the first slide groove has a first boss extending toward the front end of the clamping arm, the clamping arm seat is provided with a second hinge hole and a second slide groove, the groove wall of the second slide groove has a second boss extending toward the rear end of the clamping arm seat; the first slide grooves of the two clamping arms are inserted with a first connecting pin, and the first connecting pin is rotatably connected with the second hinge hole on the clamping arm seat; the two connecting rods are rotatably connected through a third connecting pin, and the third connecting pin is inserted in the second slide groove of the clamping arm seat. In this way, on the one hand, the first stopper at the extension end of the first boss can limit the first connecting pin from moving backward, and the clamping locking of the clamping assembly can be formed based on the first connecting pin; on the other hand, the second stopper at the extension end of the second boss can limit the third connecting pin from moving forward, and the clamping locking of the clamping assembly can be formed based on the third connecting pin. Overall, the double locking can reliably lock the clamp arm, ensure the clamping stability, and avoid abnormal detachment of the clamping component. On this basis, it provides a good technical guarantee for reasonably controlling the operation time, reducing the patient's increased pain and medical expenses.
[0019] In an optional solution of the utility model, the second slide groove is arranged through the side wall of the clamp arm seat. In this way, the operator can observe the relative position of the third connecting pin in the second slide groove through an endoscope to determine whether the clamping state is abnormal, which has good operability. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 A schematic diagram of a use state of the clamping device provided in an embodiment of the present application;
[0021] Figure 2 for Figure 1 A partial enlarged view of
[0022] Figure 3 A schematic diagram of another use state of the clamping device provided in an embodiment of the present application;
[0023] Figure 4 for Figure 3 A partial enlarged view of
[0024] Figure 5 A schematic diagram of an open state of a clamping assembly provided in an embodiment of the present application;
[0025] Figure 6 for Figure 5 A schematic diagram of the clamp arm shown in ;
[0026] Figure 7 for Figure 5 Schematic diagram of the assembly relationship between the clamp arm and the connecting rod shown in;
[0027] Figure 8 for Figure 5 The structural schematic diagram of the clamp arm seat shown in;
[0028] Fig. 9 A schematic diagram of a closed state of a clamping assembly provided in an embodiment of the present application;
[0029] Fig.10 for Fig. 9 A cross-sectional view of the clamping assembly shown in ;
[0030] Fig.11 A schematic diagram of the assembly relationship between the clamping assembly and the operating assembly provided in an embodiment of the present application;
[0031] Fig.12 A partial cross-sectional view of an operating assembly provided in an embodiment of the present application;
[0032] Fig.13 for Figure 2 A schematic diagram of the assembly relationship between the disconnector and the third connecting pin shown in ;
[0033] Fig.14 for Figure 2 A cross-sectional view of
[0034] Fig.15 for Figure 1 A cross-sectional view of the handle assembly is shown in FIG.
[0035] In the figure: the clamping device 100;
[0036] Clamping assembly 10, clamping arm 11, toothed structure 111, first sliding groove 112, first hinge hole 113, first boss 114, first pressing surface 1141, first stopper 1142, connecting rod 12, clamping arm seat 13, second hinge hole 131, second sliding groove 132, second boss 133, second pressing surface 1331, second stopper 1332, through slot 134, limiting opening 135, first connecting pin 14, second connecting pin 15, third connecting pin 16;
[0037] Operating assembly 20, detacher 21, bayonet 211, protrusion 212, ejector tube 22, rotating ring 23, detachment seat 24, deformation piece 25, extension end 251, control line 26, handle assembly 27, controller 271, gripper 272, slide groove 2721, docking ring 273, connecting tube 28, outer sleeve 29, lubrication tube 210. DETAILED DESCRIPTION
[0038] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0039] See also Figure 1, which is a schematic diagram of a usage state of the clamping device provided in an embodiment of the present application.
[0040] The medical clamping device 100 comprises a clamping assembly 10 and an operating assembly 20, wherein the operating assembly 20 is detachably connected to the clamping assembly 10. Figure 2 、The picture is Figure 1 A partial enlarged view. During the operation, the clamping assembly 10 is first inserted into the clamp channel tube of the flexible endoscope (not shown in the figure). The clamping assembly 10 can be controlled to rotate and the clamping arm 11 at the front end of the clamping assembly 10 can be controlled to open and close by the operating assembly 20. After the lesion target is locked, the clamping arm 11 closes and clamps the lesion. The operating assembly 20 can be pulled back to separate it from the clamping assembly 10. The clamping assembly 10 remains in the body and falls off and is excreted from the body after the wound is repaired.
[0041] Figure 1 The two clamping arms 11 of the clamping assembly 10 are shown in the open state. Figure 3 and Figure 4 ,in, Figure 3 This is a schematic diagram of another use state of the clamping device provided in an embodiment of the present application. Figure 3 The two clamp arms 11 shown in FIG. are in a clamped state. Figure 4 for Figure 3 A partial enlarged view of .
[0042] In this embodiment, the clamping assembly 10 includes two clamping arms 11 that can be opened and closed freely, and the two clamping arms 11 are connected to the clamping arm seat 13 through a connecting rod 12. Figure 5 , Figure 6 , Figure 7 and Figure 8 ,in, Figure 5 A schematic diagram of the open state of the clamping assembly provided in an embodiment of the present application, Figure 6 for Figure 5 A schematic diagram of the clamp arm is shown in FIG. Figure 7 for Figure 5 The schematic diagram of the assembly relationship between the clamp arm and the connecting rod is shown in FIG. Figure 8 for Figure 5 The structural schematic diagram of the clamp arm seat is shown in .
[0043] In a specific implementation, the clamp arm 11 can be a hollow structure, and the front end has a toothed structure 111. In the clamped state, the toothed structures at the front ends of the two clamp arms 11 are adapted to easily clamp and contain tissue. The "front end" here and the "rear end" used below are defined based on the patient's lesion. The "front end" is the end close to the lesion, and the "rear end" is the end away from the lesion. It should be understood that the use of the above-mentioned directional words is only used to clearly describe the solution, and does not constitute a substantial limitation on the technical solution claimed for protection in this application.
[0044] like Figure 6 As shown, the connecting end of the clamp arm 11 includes a first slide slot 112 and a first hinge hole 113, wherein the first slide slot 112 is located on a side of the first hinge hole 113 close to the front end of the clamp arm 11. In other words, the first slide slot 112 is close to the front end of the clamp arm 11 relative to the first hinge hole 113.
[0045] Combination Figure 5 and Figure 7 As shown, the first connecting pin 14 is inserted into the first sliding groove 112 of the two clamping arms 11, and the first connecting pin 14 is rotatably connected to the second hinge hole 131 on the clamping arm seat 13. One end of the first sliding groove 112 faces the front end of the clamping arm 11, and the other end faces the rear end of the clamping arm 11. During the opening and closing process of the two clamping arms 11, the first connecting pin 14 can move in the first sliding groove 112.
[0046] The first hinge holes 113 of the two clamp arms 11 are rotatably connected to one end of the corresponding connecting rod 12 through the second connecting pin 15, and the other ends of the two connecting rods 12 are rotatably connected through the third connecting pin 16, and the third connecting pin 16 is inserted into the second sliding groove 132 on the clamp arm seat 13.
[0047] Combination Figure 5 and Figure 8 As shown, the second hinge hole 131 on the clamp arm seat 13 is located on the side of the second slide slot 132 near the front end of the clamp arm seat 13; that is, the second hinge hole 131 is close to the front end of the clamp arm seat 13 relative to the second slide slot 132. One end of the second slide slot 132 faces the front end of the clamp arm seat 13, and the other end faces the rear end of the clamp arm seat 13. During the opening and closing process of the two clamp arms 11, the third connecting pin 16 can move in the second slide slot 132.
[0048] For the clamping state, the clamping assembly 10 provided in this embodiment has a double locking function to ensure stable clamping reliability.
[0049] For example Figure 6 As shown, a deformable first boss 114 is provided on the groove wall of the first slide groove 112, and the first boss 114 extends toward the front end of the clamp arm 11, and the first boss 114 has a first pressing surface 1141 and a first stopper 1142. The first connecting pin 14 located at the rear end of the first slide groove 112 can press against the first pressing surface 1141 to deform the first boss 114, and the first stopper 1142 is located at the extension end of the first boss 114.
[0050] When the clamp arm 11 is in the open state, the Figure 7As shown, the first connecting pin 14 is located at the rear end of the first sliding slot 112 . During the closing process of the clamp arm 11 , the first connecting pin 14 moves forward in the first sliding slot 112 and presses against the first pressing surface 1141 to deform the first boss 114 .
[0051] When the clamp arm 11 is in the closed state, please refer to Fig. 9 and Fig.10 ,in, Fig. 9 This is a schematic diagram of the closed state of the clamping assembly provided in an embodiment of the present application. Fig.10 for Fig. 9 The first connecting pin 14 is located at the front end of the first slide slot 112, and the first stopper 1142 at the extended end of the first boss 114 can limit the first connecting pin 14 from moving backward. Thus, the clamping assembly 10 can be clamped and locked based on the first connecting pin 14, in other words, the function of locking the clamp arm is realized.
[0052] In order to improve the actuation performance, optionally, the first boss 114 can be provided on both side walls of the first slide groove 112. For example, but not limited to, the two first bosses 114 are symmetrically arranged on both sides of the first slide groove 112 to avoid unbalanced load and stagnation of the first connecting pin 14 when moving in the first slide groove.
[0053] For example Figure 8 As shown, a deformable second boss 133 is provided on the groove wall of the second slide groove 132, and the second boss 133 extends toward the rear end of the clamp arm seat 13, and the second boss 133 has a second pressing surface 1331 and a second stop portion 1332. The third connecting pin 16 located at the front of the second slide groove 132 can press against the second pressing surface 1331 to deform the second boss 133, and the second stop portion 1332 is located at the extension end of the second boss 133.
[0054] When the clamp arm 11 is in the open state, the Figure 5 As shown, the third connecting pin 16 is located in front of the second slide slot 132. During the closing process of the clamp arm 11, the third connecting pin 16 moves backward in the second slide slot 132 and presses against the second pressing surface 1331 to deform the second boss 133. Fig. 9 The third connecting pin 16 is located at the rear end of the second slide slot 132, and the second stopper 1332 at the extension end of the second boss 133 can limit the forward movement of the third connecting pin 16. Thus, the clamping assembly 10 can be clamped and locked based on the third connecting pin 16.
[0055] Also optionally, the second bosses 133 may be provided on both side walls of the second slide groove 132. For example, but not limited to, the two second bosses 133 may be symmetrically provided on both sides of the second slide groove 132 to avoid unbalanced load and stagnation of the third connecting pin 16 when moving in the groove, thereby improving the overall actuation performance.
[0056] Furthermore, the clamp arm seat 13 may be cylindrical, and the second slide groove 132 may be set through the side wall of the clamp arm seat 13, so that the operator can observe the position of the third connecting pin 16 in the second slide groove 132 through an endoscope to determine whether the clamping state is abnormal.
[0057] In addition, the side walls of the clamp arm seat 13 may be provided with a through slot 134, such as Figure 2 As shown, when the clamp arm 11 is switched to the open state, the second connecting pin 15 and the connecting end of the connecting rod 12 and the clamp arm 11 can extend through the through slot 134 on the corresponding side (only one side is shown in the figure).
[0058] It should be noted that the shapes of the first boss 114 and the second boss 133 can be determined according to the overall design requirements of the product, as long as they can be deformed and can establish a locking and limiting function, and are not limited to the shapes shown in the figure.
[0059] For the operating assembly 20, different structures can be used to realize the functions of driving the clamping assembly 10 to rotate and the clamping arm 11 to open and close. Figure 1 , Figure 2 , Fig.11 and Fig.12 ,in, Fig.11 This is a schematic diagram of the assembly relationship between the clamping assembly 10 and the operating assembly 20 provided in an embodiment of the present application. Fig.12 It is a partial cross-sectional view of the operating assembly 20.
[0060] In this embodiment, the operating assembly 20 mainly includes a detacher 21 , an ejector tube 22 , a rotating ring 23 , a detachment seat 24 , a deformation piece 25 , a control line 26 and a handle assembly 27 .
[0061] The detacher 21 is inserted into the detaching seat 24, and the front end of the detacher 21 has a bayonet 211, which is used to be fixedly engaged with the third connecting pin 16 of the clamping assembly 10. The front end of the control line 26 is fixedly connected to the rear end of the detacher 21, and the rear end of the control line 26 is connected to the handle assembly 27 to control the rotation of the control line 26 and drive the clamping assembly 10 to rotate to align with the target, and at the same time, control the control line 26 to extend or retract and drive the two clamping arms 11 of the clamping assembly 10 to open or close.
[0062] The control line 26 is fixedly connected to the rear end of the disconnector 21. To improve assembly processability, the connection can be fixed by a connecting tube 28 which is sleeved on the front end of the control line 26 and the rear end of the disconnector 21, for example but not limited to press-fitting.
[0063] Among them, the main body of the deformable piece 25 is U-shaped, and the bottom structure of the main body of the U-shaped deformable piece 25 is sleeved on the outside of the control line 26 and the connecting tube 28. The ends of the two side structures of the U-shaped deformable piece 25 are bent back to back to form an extended end 251, and the two extended ends 251 extend through the side wall of the rotating ring 23.
[0064] The rotating ring 23 is nested between the detacher 21 and the detaching seat 24 , and the rotating ring 23 can be rotatable relative to the detaching seat 24 .
[0065] Among them, the ejector tube 22 is sleeved on the disconnector 21, and the disconnector 21 on the front side of the ejector tube 22 has a convex portion 212, the rear end surface of the convex portion 212 is arranged opposite to the front end surface of the ejector tube 22, the rear end surface of the ejector tube 22 is arranged opposite to the bottom structure of the body of the deformation piece 25 sleeved on the outside of the connecting tube 28, and the two side structures of the deformation piece 25 are located between the ejector tube 22 and the rotating ring 23.
[0066] Please also see Fig.11 , Fig.13 and Fig.14 ,in, Fig.13 Shows Figure 2 The schematic diagram of the assembly relationship between the disconnector 21 and the third connecting pin 16 is shown in FIG. Fig.14 for Figure 2 After the operating assembly 20 is plugged into the clamping assembly 10, the bayonet 211 at the front end of the disconnector 21 is engaged with the third connecting pin 16 of the clamping assembly 10, and at the same time, after the extended end 251 of the deformation sheet 25 is deformed, it can be inserted into the limit opening 135 of the clamping arm seat 13 based on its elastic recovery ability.
[0067] Furthermore, in order to improve the linkage reliability between the operating assembly 20 and the clamping assembly 10, two disengagers 21 are provided at intervals, respectively engaging with the third connecting pin 16. Similarly, the two outwardly extending ends 251 of the deformation sheet 25 extend through the side wall of the rotating ring 23 and are inserted into the limit openings 135 on the corresponding sides.
[0068] Please also see Figure 1 and Fig.15 ,in, Fig.15 for Figure 1 A cross-sectional view of the handle assembly is shown in FIG.
[0069] In this embodiment, the handle assembly 27 mainly includes a controller 271, a gripper 272 and a docking ring 273. An outer sleeve 29 is sleeved on the outside of the control line 26, wherein the docking ring 273 is connected to the rear end of the separation seat 24 through the outer sleeve 29. The gripper 272 and the docking ring 273 are relatively rotatably connected.
[0070] The controller 271 is connected to the control line 26. The controller 271 is mounted on the front of the holder 272. The holder 272 has a slide groove 2721, so that the controller 271 can move forward and backward relative to the holder 272. In this way, through the forward and backward movement of the controller 271, the opening and closing of the front end clamping arm 11 can be controlled by the third connecting pin 16, the connecting rod 12, etc., and the rotation of the clamping assembly 10 can be controlled by the overall rotation of the handle assembly 27.
[0071] In addition, a lubrication tube 210 is provided on the outer layer of the control line 26 to make the movement of the control line 26 smoother.
[0072] The clamping device 100 provided in the embodiment of the present application is mainly used in gastroenterological surgery through natural cavity. During the operation, the clamping assembly 10 is first inserted into the clamp channel tube of the flexible endoscope, and then manually transported to the front clamp channel tube outlet. Under the field of view of the endoscope, the opening and closing of the front clamp arm 11 can be controlled by the controller 271 of the handle assembly 27. Specifically, the rotation of the front clamp arm 11 can be controlled by the rotation of the handle assembly 27. When the target is locked, the clamp arm 11 clamps the target lesion (bleeding point). Next, the controller 271 is pulled back with force, and when the force on the rear end of the detacher 21 exceeds the deformation limit of the bayonet 211, the front detacher 21 is detached from the third connecting pin 16; in addition, the backward movement of the detacher 21 drives the ejector tube 22 to move backward, and the ejector tube 22 drives the deformation sheet 25 to move backward, so that the front end 251 of the deformation sheet 25 is detached from the rotating ring and the limiting opening 135 of the clamping arm seat 13, so that the operating assembly 20 is detached from the clamping assembly 10. In this way, the operating assembly 20 can be pulled out.
[0073] The ordinal numbers "first" and "second" used in this article are only used to describe the composition or structure of the same function in the technical solution. It is understandable that the use of the ordinal numbers "first" and "second" does not constitute an understanding limitation on the technical solution claimed for protection in this application.
[0074] The above are only preferred implementations of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. A clamping assembly, adapted to be matched with an operating assembly, characterized in that: The clamping assembly includes two clamping arms that can be opened and closed relative to each other, two connecting rods and a clamping arm seat; the clamping arm is provided with a first slide groove and a first hinge hole, and the first slide groove is close to the front end of the clamping arm relative to the first hinge hole; the clamping arm seat is provided with a second hinge hole and a second slide groove, and the second hinge hole is close to the front end of the clamping arm seat relative to the second slide groove; A first connecting pin is inserted into the first sliding groove of the two clamp arms, the first connecting pin can move in the first sliding groove, and the first connecting pin is rotatably connected to the second hinge hole on the clamp arm seat; the first hinge hole of each clamp arm is rotatably connected to one end of the corresponding connecting rod through the second connecting pin, and the other ends of the two connecting rods are rotatably connected through a third connecting pin, and the third connecting pin is inserted in the second sliding groove of the clamp arm seat and can move in the second sliding groove; A deformable first boss is disposed on the groove wall of the first slide groove, the first boss extends toward the front end of the clamp arm, and the extending end of the first boss has a first stopper, the first stopper can limit the first connecting pin located at the front end of the first slide groove from moving backward; A deformable second boss is arranged on the slot wall of the second slide slot, and the second boss extends toward the rear end of the clamp arm seat. The extending end of the second boss has a second stop portion, and the second stop portion can limit the forward movement of the third connecting pin located at the rear end of the second slide slot.
2. The clamping assembly according to claim 1, characterized in that: The first boss also has a first pressing surface. The first connecting pin located at the rear end of the first slide slot can press against the first pressing surface to deform the first boss so as to move to the front end of the first slide slot.
3. The clamping assembly according to claim 1, characterized in that: The second boss also has a second pressing surface, and the third connecting pin located at the front of the second slide slot can press against the second pressing surface to deform the second boss to move to the rear end of the second slide slot.
4. The clamping assembly according to any one of claims 1 to 3, characterized in that: The number of the first bosses is two and they are respectively arranged on the two side walls of the first chute; the number of the second bosses is two and they are respectively arranged on the two side walls of the second chute.
5. The clamping assembly according to claim 4, characterized in that: The two first bosses are symmetrically arranged on both sides of the first sliding slot, and the two second bosses are symmetrically arranged on both sides of the second sliding slot.
6. The clamping assembly according to claim 4, characterized in that: The clamp arm seat is cylindrical, and the second sliding groove is arranged through the side wall of the clamp arm seat.
7. The clamping assembly according to claim 6, characterized in that: The side walls of the clamp arm seat are respectively provided with through slots at relative positions. When the clamp arm is in an open state, the second connecting pin and the connecting ends of the connecting rod and the clamp arm extend out of the through slots on corresponding sides.
8. A clamping device, characterized in that: The clamping device comprises a clamping assembly and an operating assembly, wherein the operating assembly is detachably connected to the clamping assembly; The clamping assembly is the clamping assembly according to any one of claims 1 to 7; The operating assembly drives the clamping assembly to rotate through a control line, and drives the two clamping arms of the clamping assembly to open or close.
9. The clamping device according to claim 8, characterized in that: The operating assembly includes a detacher, a detachment seat and a handle assembly, the detacher is inserted into the detachment seat, and the front end of the detacher has a bayonet for being fixedly engaged with the first connecting pin; the front end of the control line is fixedly connected to the detacher, and the rear end of the control line is connected to the handle assembly to control the control line to rotate, extend or retract.
10. The clamping device according to claim 9, characterized in that: It also includes a rotating ring, an ejection tube and a deformation sheet, wherein the rotating ring is nested between the disconnector and the disconnection seat, and the rotating ring is rotatably connected to the disconnection seat; the control line is fixedly connected through a connecting tube sleeved on the front end of the control line and the rear end of the disconnector; The body of the deformable sheet is U-shaped, the bottom structure of the body of the deformable sheet is sleeved outside the control line, the front ends of the two side structures of the deformable sheet are bent back to back to form extended ends, the two extended ends extend through the side walls of the rotating ring, and are inserted into the limiting openings of the clamp arm seats on the corresponding sides; The ejector tube is sleeved on the disconnector, and the disconnector located at the front side of the ejector tube has a convex portion, the rear end surface of the convex portion is arranged opposite to the front end surface of the ejector tube, the rear end surface of the ejector tube is arranged opposite to the bottom structure of the body of the deformation sheet sleeved outside the connecting tube, and the two side structures of the deformation sheet are located between the ejector tube and the rotating ring.
11. The clamping device according to any one of claims 9 to 10, characterized in that The handle assembly includes a controller, a gripper and a docking ring, the control line is sheathed with an outer sleeve, and the docking ring is connected to the disengagement seat through the outer sleeve; The holder is rotatably connected to the docking ring to control the rotation of the control line; The controller is connected to the control line, and the controller is sleeved on the front of the holder. The holder has a slide groove for the controller to move forward and backward relative to the holder to control the control line to move forward and backward.