clamping device

Abstract

A clamping device, comprising a clamping body, a connecting rod and a locking assembly, the clamping body comprises a mounting seat, a first clamping body and a second clamping body, the locking assembly comprises a first locking piece, a second locking piece and an adjusting piece, the first locking piece is arranged on the mounting seat, the second locking piece and the adjusting piece are movably arranged on the connecting rod, the adjusting piece is connected with the second locking piece, and the adjusting piece is used for driving the second locking piece to switch between a locking position and an unlocking position. Since the locking assembly with the adjusting piece is connected on the clamping body, the adjusting piece can drive the locking assembly to lock and unlock the second clamping body, the second clamping body cannot move in the locking state, and the second clamping body can freely move in the unlocking state; so that when a doctor uses the clamping device to clamp or disassemble devices such as injection pumps, only one hand needs to hold the clamping device, and the locking and unlocking of the second clamping body can be realized by operating the adjusting piece with fingers, so that the clamping device is convenient to use, time and labor are saved.

Description

Technical Field

[0001] This invention relates to medical auxiliary devices, and more specifically to a clamping device for clamping medical devices. Background Technology

[0002] In medical settings, doctors need to clamp and transport infusion pumps, syringe pumps, and their assemblies, such as using a manual, portable clamping device. Traditional clamping devices require doctors to operate both hands to clamp and disassemble these components, making the process inconvenient, time-consuming, and labor-intensive. Summary of the Invention

[0003] This invention provides a clamping device to solve the problems of inconvenient, time-consuming and labor-intensive operation of clamping devices.

[0004] In one embodiment, a clamping device is provided, including...

[0005] The clamping body includes a mounting base, a first clamping body, and a second clamping body. The first clamping body is disposed on the mounting base, and the second clamping body is movably disposed on the mounting base. The first clamping body and the second clamping body are used together to clamp the object being clamped.

[0006] A connecting rod is axially movable on the mounting base, and one end of the connecting rod is connected to the second clamping body for driving the second clamping body to move relative to the first clamping body;

[0007] A locking assembly includes a first locking member, a second locking member, and an adjusting member. The first locking member is an outer sleeve with internal teeth, and the connecting rod passes through the outer sleeve. The second locking member is a rotating snap-fit ​​member used to engage or disengage with the internal teeth of the outer sleeve. The adjusting member includes a sleeve shaft, a pressure cylinder, and a return member. The pressure cylinder is sleeved on the connecting rod, and a receiving cavity is provided at one end of the pressure cylinder away from the second clamp. The sleeve shaft is axially movable and sleeved on the connecting rod, and one end of the sleeve shaft can move into the receiving cavity of the pressure cylinder. The rotating snap-fit ​​member is installed on the sleeve shaft, and one end of the rotating snap-fit ​​member is rotatably connected to the sleeve shaft, while the other end of the rotating snap-fit ​​member is a free end. The return member is disposed on the sleeve shaft and connected to the free end of the rotating snap-fit ​​member.

[0008] The adjusting member is used to drive the rotating snap-fit ​​member to switch between a locked position and an unlocked position; in the locked position, the returning member is used to drive the free end of the rotating snap-fit ​​member to pop out and connect with the inner teeth of the outer sleeve; in the unlocked position, the pressing cylinder is used to press the rotating snap-fit ​​member back so that the free end of the rotating snap-fit ​​member separates from the inner teeth of the outer sleeve.

[0009] In one embodiment, the inner teeth of the outer sleeve are unidirectional teeth.

[0010] In one embodiment, the connecting rod is provided with a shoulder, and the end of the pressure cylinder near the second clamp abuts against the shoulder.

[0011] In one embodiment, the connecting rod is provided with an external thread, and the sleeve is provided with an internal thread, wherein the internal thread of the sleeve engages with the external thread of the connecting rod.

[0012] In one embodiment, the sleeve shaft is provided with a mounting groove, and the rotating snap-fit ​​component and the return component are installed in the mounting groove of the sleeve shaft.

[0013] In one embodiment, the sleeve shaft is provided with two mounting slots symmetrical along the axis, and each mounting slot is equipped with a rotating snap-fit ​​component and a return component.

[0014] In one embodiment, a clamping device is provided, including...

[0015] The clamping body includes a mounting base, a first clamping body, and a second clamping body. The first clamping body is disposed on the mounting base, and the second clamping body is movably disposed on the mounting base. The first clamping body and the second clamping body are used together to clamp the object being clamped.

[0016] A connecting rod is axially movable on the mounting base, and one end of the connecting rod is connected to the second clamping body for driving the second clamping body to move relative to the first clamping body;

[0017] The locking assembly includes a first locking member, a second locking member, and an adjusting member. The first locking member is an outer sleeve with one-way teeth, the one-way teeth including a plurality of annular teeth arranged side by side, and the connecting rod passes through the outer sleeve. The second locking member is a rotating snap-fit ​​member, which is used to engage or disengage with the one-way teeth of the outer sleeve.

[0018] The adjusting member is connected to the rotating snap-fit ​​member, and the adjusting member is used to drive the rotating snap-fit ​​member to switch between a locked position and an unlocked position. In the locked position, the adjusting member is used to drive the rotating snap-fit ​​member to connect with the one-way teeth of the outer sleeve. In the unlocked position, the adjusting member is used to drive the rotating snap-fit ​​member to separate from the one-way teeth of the outer sleeve.

[0019] In one embodiment, the adjusting component includes a sleeve shaft, a pressure cylinder, and a return component. The connecting rod has a shoulder and an external thread. The pressure cylinder and the sleeve shaft are sleeved on the connecting rod. One end of the pressure cylinder abuts against the shoulder, and the end of the pressure cylinder away from the shoulder has a receiving cavity. The sleeve shaft has an internal thread that meshes with the external thread of the connecting rod. One end of the sleeve shaft is movable into the receiving cavity of the pressure cylinder. The sleeve shaft has a mounting groove, and a rotating snap-fit ​​component is installed in the mounting groove of the sleeve shaft. One end of the rotating snap-fit ​​component is rotatably connected to the sleeve shaft, and the other end of the rotating snap-fit ​​component is a free end. The return component is disposed on the sleeve shaft and is connected to the free end of the rotating snap-fit ​​component. The return component is used to drive the free end of the rotating snap-fit ​​component to pop out and connect with the one-way teeth of the outer sleeve. The pressure cylinder is used to press the rotating snap-fit ​​component back so that the free end of the rotating snap-fit ​​component separates from the one-way teeth of the outer sleeve.

[0020] In one embodiment, the rotating latching member and the one-way teeth of the outer sleeve form a ratchet structure, the rotating latching member can move freely relative to the one-way teeth toward the second clamping body, and the one-way teeth block and restrict the rotating latching member from moving freely away from the second clamping body.

[0021] In one embodiment, the return element is a spring or a sheet spring.

[0022] In one embodiment, the return member is an elastic structure having an elastic portion, which is connected to the rotating snap-fit ​​member.

[0023] In one embodiment, the adjusting member further includes a spring disposed between the pressure cylinder and the sleeve shaft.

[0024] In one embodiment, the spring is located in the receiving cavity of the pressure cylinder, one end of the spring is connected to the end of the receiving cavity near the second clamp, and the other end of the spring is connected to the end of the sleeve shaft near the second clamp.

[0025] In one embodiment, the pressure cylinder is provided with an axial guide groove, and the sleeve shaft is provided with a protruding limiting block, the limiting block being axially movable within the guide groove.

[0026] In one embodiment, a grip is attached to the end of the connecting rod away from the mounting base.

[0027] In one embodiment, the second clamp is rotatably connected to the end of the connecting rod, and the second clamp has a clearance that can be adjusted axially relative to the connecting rod.

[0028] In one embodiment, one of the mounting base and the second clamp is provided with a linear guide rail, and the other is provided with a linear guide groove adapted to the linear guide rail. The linear guide rail and the linear guide groove are slidably connected so that the second clamp can slide in a straight line relative to the mounting base.

[0029] In one embodiment, the first clamp and the mounting base are an integrated structure.

[0030] According to the clamping device of the above embodiment, since a locking assembly with an adjusting member is connected to the clamping body, the adjusting member can drive the locking assembly to lock and unlock the second clamping body. In the locked state, the second clamping body cannot move, and in the unlocked state, the second clamping body can move freely. This allows doctors to lock and unlock the second clamping body simply by holding the clamping device with one hand and operating the adjusting member with their fingers when using the clamping device to clamp or disassemble devices such as infusion pumps. Thus, this clamping device is convenient to use and saves time and effort. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the clamping device in one embodiment;

[0032] Figure 2 This is an axial sectional view of the clamping device in one embodiment;

[0033] Figure 3 This is a schematic diagram of the connecting rod in one embodiment;

[0034] Figure 4 This is a schematic diagram of the locking assembly in one embodiment;

[0035] Figure 5 This is a schematic diagram of the eccentric wheel in one embodiment;

[0036] Figure 6 This is an axial sectional view of the clamping device in one embodiment;

[0037] Figure 7 This is a schematic diagram of the clamping device in one embodiment;

[0038] Figure 8 This is an axial sectional view of the clamping device in one embodiment;

[0039] Figure 9 This is an axial sectional view of the clamping device in one embodiment;

[0040] Figure 10 This is a partial structural schematic diagram of the clamping device in one embodiment. Detailed Implementation

[0041] Traditional clamping devices consist of a mounting base, a fixed clamp, and a movable clamp. The fixed clamp is fixedly mounted on the mounting base, and the movable clamp is connected to a screw. The screw is threadedly connected to the mounting base, and the rotation of the screw drives the movement of the movable clamp. When operating the clamping device, doctors need to hold the mounting base with one hand and turn the screw with the other to clamp or release syringes or other devices relative to the fixed clamp, which is inconvenient. Furthermore, the movement of the movable clamp, whether clamping or releasing, is entirely driven by the screw's rotation, resulting in slow movement and a prolonged operation time.

[0042] Therefore, the applicant improved the clamping device by adding a locking device. This locking device can lock the movable clamp body. In the unlocked state, the movable clamp body can move freely. In the locked state, it can be driven by rotation to clamp or unlock. This effectively divides the movement of the movable clamp body into a free state with arbitrary large-stroke movement and a locked / unlocked state with small-range movement, thereby improving the clamping efficiency of the clamping device. Furthermore, with the locking device, clamping and locking can be operated with one hand, making the operation of the clamping device much more convenient.

[0043] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings. Similar elements in different embodiments are referred to by associated similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of this application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to this application are not shown or described in the specification. This is to avoid obscuring the core parts of this application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0044] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0045] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0046] Please refer to Figures 1 to 6 In one embodiment, a clamping device is provided, which includes a clamping body 10, a connecting rod 20, and a locking assembly 30.

[0047] The clamping body 10 includes a mounting base 11, a first clamp 12, and a second clamp 13. The first clamp 12 is a fixed clamp, and the second clamp 13 is a movable clamp. The first clamp 12 and the mounting base 11 are an integral structure. The first clamp 12 can also be fixed to the mounting base 11 by welding or screws. The second clamp 13 is movably mounted on the mounting base 11 and can move relative to the first clamp 12. Thus, the cooperation between the first clamp 12 and the second clamp 13 enables the clamping of medical devices.

[0048] The connecting rod 20 is a rotating shaft structure. The mounting base 11 has a mounting portion 111, which is spaced apart from the first clamping body 12 and opposite to it. The mounting portion 111 has a mounting hole, through which the connecting rod 20 passes, and the connecting rod 20 is axially movable. The second clamping body 13 is mounted on the end of the connecting rod 20 and is located between the mounting portion 111 and the first clamping body 12. The connecting rod 20 and the second clamping body 13 move simultaneously, and the connecting rod 20 can also rotate relative to the second clamping body 13.

[0049] A linear guide rail 112 is provided on the mounting base 11, and the linear guide rail 112 is located between the mounting part 111 and the first clamping body 12. The second clamping body 13 is provided with a linear guide groove 131 adapted to the linear guide rail 112. The second clamping body 13 is slidably engaged with the linear guide rail 112 through the linear guide groove 131. The cross-section of the linear guide rail 112 can be square, triangular, or dovetail-shaped, etc., and the linear guide groove 131 has a shape complementary to the linear guide rail 112. The cooperation between the linear guide rail 112 and the linear guide groove 131 can limit the radial degree of freedom of the second clamping body 13, thereby improving the stability of the clamping movement of the second clamping body 13. Alternatively, in other embodiments, the mounting base 11 is provided with a linear guide groove, and the second clamping body 13 is provided with a protrusion adapted to the linear guide groove. The cooperation between the protrusion and the linear guide groove can also improve the stability of the movement of the second clamping body 13.

[0050] In this embodiment, the locking assembly 30 includes a first locking member 31, a second locking member 32, and an adjusting member 33. The first locking member 31 includes an outer sleeve 311 with an internal thread. The second locking member 32 includes a toothed block 321 that is adapted to the internal thread of the outer sleeve 311. One end of the outer sleeve 311 is fixed to the side of the mounting part 111 away from the first clamp 12. The connecting rod 20 passes through the outer sleeve 311. The outer sleeve 311 serves as an axial guide for the connecting rod 20 and also has a locking function.

[0051] Please refer to 2 and Figure 3 The connecting rod 20 has a mounting groove 21 located on the outer sleeve 311. The mounting groove 21 radially penetrates the connecting rod 20. Two toothed blocks 321 are symmetrically installed within the mounting groove 21, with their tooth surfaces facing outwards. Two spaced-apart connecting portions 322 are located on the inner side of each toothed block 321 facing away from the tooth surfaces, each with aligned mounting holes. The two toothed blocks 321 are symmetrically arranged, with their connecting portions 322 intersecting each other. The mounting holes on the two toothed blocks 321 are aligned, and the two toothed blocks 321 mutually limit each other's axial freedom. The width of the mounting groove 21 is slightly larger than the axial length of the toothed block 321. The mounting groove 21 also limits the axial freedom of the toothed block 321, thereby improving the stability of its extension and retraction.

[0052] In other embodiments, the tooth block 321 may have three or more blocks, which may be evenly arranged along a circumference. The connecting portions 322 of the multiple tooth blocks 321 are staggered.

[0053] Please refer to Figure 4 In this embodiment, the adjusting member 33 includes a rotating shaft 331, an eccentric wheel 332, and a toggle member 333. The connecting rod 20 is provided with a mounting hole 22, which communicates with the mounting groove 21. The rotating shaft 331 is rotatably installed in the mounting hole 22 of the connecting rod 20, and one end of the rotating shaft 331 extends into the mounting groove 21.

[0054] Please refer to Figure 5There are four eccentric wheels 332, which are eccentrically mounted on the rotating shaft 331 and located within the mounting groove 21, forming a cam-like structure. The four eccentric wheels 332 are divided into two groups. For ease of description, the four eccentric wheels 332 arranged side-by-side are defined as a, b, c, and d. Eccentric wheels a and c form one group, and eccentric wheels b and d form another group. Eccentric wheels a and c are eccentrically offset by +ΔL relative to the rotating shaft 331 on a straight line L, while eccentric wheels b and d are eccentrically offset by -ΔL relative to the rotating shaft 331 on a straight line L. Eccentric wheels a and c are each mounted in the mounting hole of the connecting part 322 of one toothed block 321, and eccentric wheels b and d are each mounted in the mounting hole of the connecting part 322 of another toothed block 321. The mounting holes of the two toothed blocks 321 are square, with the width of the mounting hole equal to the outer diameter R of the eccentric wheel 332 and the length equal to R + 2ΔL. This ensures that when the rotating shaft 331 drives the eccentric wheel 332 to rotate 90°, the height of the toothed block 321 relative to the rotating shaft 331 changes by ΔL. In this embodiment, ΔL is set slightly larger than the tooth height of the toothed block 321, so that the toothed block 321 can completely separate from the outer sleeve 311, thereby enabling the rotating shaft 331 to rotate 90° to achieve both engagement and disengagement of the toothed block 321 and the outer sleeve 311.

[0055] In other embodiments, when ΔL is much greater than the tooth height of the tooth block 321, rotating the shaft 331 by 10°, 20°, or 60° can switch between engaging and disengaging the tooth block 321 and the outer sleeve 311. The specific rotation angle can be set according to actual needs.

[0056] In this embodiment, the actuating element 333 is an annular wheel with radial protrusions for easy operation by the doctor. The actuating element 333 is mounted on the connecting rod 20, which has a slot 23 arranged circumferentially with an opening angle of 90°. An extension of the actuating element 333 passes through the slot 23 and connects to the rotating shaft 331, or the actuating element 333 is connected to the rotating shaft 331 via a screw passing through the slot 23. The actuating element 333 drives the rotation of the rotating shaft 331.

[0057] The outer diameter of the actuating element 333 is greater than the maximum radial length of the eccentric wheel 332. The maximum radial length of the eccentric wheel 332 is 1 / 2R+ΔL, which makes the actuating element 333 and the eccentric wheel 332 a lever structure. Applying a smaller force to the actuating element 333 can drive the eccentric wheel 332 to rotate.

[0058] In other implementations, the actuating element 333 is also a rod-shaped structure. One end of the rod-shaped structure passes through the slot 23 and is connected to the rotating shaft 331, while the other end of the rod-shaped structure protrudes outside the slot 23, which can also drive the eccentric wheel 332 to rotate.

[0059] In this embodiment, the adjusting member 33 also includes a torsion spring 334, which is installed in the mounting hole 22 of the connecting rod 20. The torsion spring 334 is sleeved on the rotating shaft 331 and connected to the connecting rod 20. The torsion spring 334 is used to provide a restoring force for the rotating shaft 331 to rotate and reset.

[0060] In other embodiments, the adjusting member 33 is not provided with torque, and the return of the rotating shaft 331 can also be achieved by rotating the toggle member 333.

[0061] In this embodiment, a handle 24 is installed at the end of the connecting rod 20 away from the second clamp 13. The handle 24 is made of wood or plastic to improve the grip feel. The handle 24 can also be an integral structure with the connecting rod 20. The outer surface of the handle 24 is also provided with anti-slip texture. The handle 24 is used to drive the connecting rod 20 and the locking assembly 30 (excluding the outer sleeve 311) to rotate simultaneously.

[0062] In this embodiment, the method of using the clamping device is described using clamping a syringe as an example. The clamping steps are as follows:

[0063] S11: The doctor holds the mounting base 11 with one hand and rotates the actuator 333 90° using their thumb; the actuator 333 drives the toothed block 321 to retract via the rotating shaft 331 and the eccentric wheel 332. At this time, the toothed block 321 separates from the outer sleeve 311 and is in the unlocked state. Please refer to [reference needed]. Figure 6 ;

[0064] S12: Place the syringe between the first clamp 12 and the second clamp 13, and then push the second clamp 13, the connecting rod 20 and the locking assembly 30 together toward the first clamp 12 by the thumb or palm, so that the first clamp 12 and the second clamp 13 form a preliminary clamping of the syringe; during this process, the thumb or palm always presses the actuating piece 333.

[0065] S13: Release the actuating element 333. Driven by the torsion spring 334, the rotating shaft 331 and the eccentric wheel 332 rotate 90° in opposite directions to reset. Then, the eccentric wheel 332 drives the toothed block 321 to extend and reset. The toothed block 321 engages with the internal thread of the outer sleeve 311, forming a locked state. Please refer to [reference needed]. Figure 2 ;

[0066] S14: By rotating the grip handle 24 with the fingers, the toothed block 321 rotates relative to the outer sleeve 311. The threaded connection between the toothed block 321 and the outer sleeve 311 converts the rotation into axial linear movement, ultimately driving the second clamping body 13 to abut against the syringe. The first clamping body 12 and the second clamping body 13 clamp the syringe tightly. This state is the clamped state, or pre-tightened state. In this state, the toothed block 321 is subjected to a reverse clamping force. Under this force, the driving force of rotating the actuating element 333 cannot drive the movement of the toothed block 321. The clamped state can prevent accidental contact with the actuating element 333 from causing the syringe to be released.

[0067] If it is necessary to release the syringe, the grip handle 24 must be rotated in the opposite direction first, so that the second clamp 13 is away from the first clamp 12, and the syringe is partially released. Then, the actuator 333 is rotated to separate the toothed block 321 from the outer sleeve 311, forming an unlocked state. Finally, the grip handle 24 is moved axially to move the second clamp 13 away by a large distance, and the syringe can be removed.

[0068] In this embodiment, the clamping device has a locking assembly 30 with an adjusting member 33 connected to the clamping body 10. The adjusting member 33 can drive the locking assembly 30 to lock and unlock the second clamping body 13. In the locked state, the second clamping body 13 cannot move axially directly but can move by rotation. In the unlocked state, the second clamping body 13 can move axially directly. This allows doctors to lock and unlock the second clamping body 13 simply by holding the clamping device with one hand and operating the adjusting member with their fingers when using the clamping device to clamp or disassemble devices such as infusion pumps. Therefore, this clamping device is convenient to use and saves time and effort.

[0069] In one embodiment, a clamping device is provided. The difference between this clamping device and the above embodiment is that the locking component is different. This clamping device can also achieve single-person operation.

[0070] Please refer to Figures 7 to 10 In this embodiment, the clamping body 10 includes a mounting base 11, a first clamp 12, and a second clamp 13. The first clamp 12 is a fixed clamp, and the second clamp 13 is a movable clamp. The first clamp 12 and the mounting base 11 are an integral structure. The first clamp 12 can also be fixed to the mounting base 11 by welding or screws. The second clamp 13 is movably disposed on the mounting base 11 and can move relative to the first clamp 12. Thus, the cooperation between the first clamp 12 and the second clamp 13 can achieve the clamping of medical devices.

[0071] The connecting rod 20 is a rotating shaft structure. The mounting base 11 has a mounting portion 111, which is spaced apart from the first clamping body 12 and opposite to it. The mounting portion 111 has a mounting hole, through which the connecting rod 20 passes, and the connecting rod 20 is axially movable. The second clamping body 13 is mounted on the end of the connecting rod 20 and is located between the mounting portion 111 and the first clamping body 12. The connecting rod 20 and the second clamping body 13 move simultaneously, and the connecting rod 20 can also rotate relative to the second clamping body 13.

[0072] A linear guide rail 112 is provided on the mounting base 11, and the linear guide rail 112 is located between the mounting part 111 and the first clamping body 12. The second clamping body 13 is provided with a linear guide groove 131 adapted to the linear guide rail 112. The second clamping body 13 is slidably engaged with the linear guide rail 112 through the linear guide groove 131. The cross-section of the linear guide rail 112 can be square, triangular, or dovetail-shaped, etc., and the linear guide groove 131 has a shape complementary to the linear guide rail 112. The cooperation between the linear guide rail 112 and the linear guide groove 131 can limit the radial degree of freedom of the second clamping body 13, thereby improving the stability of the clamping movement of the second clamping body 13. Alternatively, in other embodiments, the mounting base 11 is provided with a linear guide groove, and the second clamping body 13 is provided with a protrusion adapted to the linear guide groove. The cooperation between the protrusion and the linear guide groove can also improve the stability of the movement of the second clamping body 13.

[0073] The locking assembly 40 includes a first locking member 41, a second locking member 42, and an adjusting member 43. The first locking member 41 includes an outer sleeve 411, which has internal teeth. The internal teeth are unidirectional teeth, which are formed by several annular teeth arranged side by side and are non-spiral structures.

[0074] The second locking member 42 includes a rotating latching member 421, which is a long strip structure and has two parts.

[0075] The end of the connecting rod 20 away from the second clamp 13 has an external thread. The adjusting component 43 includes a sleeve 431, a pressure cylinder 432, and a return component 433. The sleeve 431 has an internal thread and is sleeved on the connecting rod 20, forming a threaded connection. The sleeve 431 is also located inside the outer sleeve 411. The sleeve 431 has two symmetrical mounting slots, each slot housing a rotating locking component 421 and a return component 433. Specifically, the end of the rotating locking component 421 near the second clamp 13 is rotatably connected to the sleeve 431, and the end of the rotating locking component 421 away from the second clamp 13 is a free end. The return component 433 is a spring piece, which is connected to the inner surface of the free end of the rotating locking component 421. The spring piece always provides a driving force for the free end of the rotating locking component 421 to pop outward. The spring of the return piece 433 can be set as two pieces, or an elastic structure with two elastic parts that are respectively connected to the two rotating latches 421 one by one. The return piece 433 is also a straight spring, which can also provide driving force to the rotating latches 421.

[0076] Under the action of the return piece 433, the free end of the rotating latch 421 pops out and latches onto the one-way teeth of the outer sleeve 411. The rotating latch 421 and the outer sleeve 411 form a ratchet structure. The rotating latch 421 can move freely relative to the outer sleeve 411 toward the second clamp 13, but cannot move freely away from the second clamp 13.

[0077] The pressure cylinder 432 is a cylindrical structure, mounted on the connecting rod 20, and located between the second clamp 13 and the sleeve shaft 431. The connecting rod 20 has a shoulder, and the end of the pressure cylinder 432 away from the sleeve shaft 431 abuts against the shoulder of the connecting rod 20. The shoulder serves to limit the movement of the pressure cylinder 432. The side of the pressure cylinder 432 facing the sleeve shaft 431 has an annular receiving cavity. The outer diameter of the end of the sleeve shaft 431 facing the pressure cylinder 432 is smaller than the inner diameter of the receiving cavity of the pressure cylinder 432. This end of the sleeve shaft 431 can move into the receiving cavity of the pressure cylinder 432, thereby allowing the outer wall of the receiving cavity of the sleeve shaft 431 to press the rotating snap-fit ​​member 421 into the mounting groove of the sleeve shaft 431.

[0078] In this embodiment, the adjusting member 43 also includes a spring 434, which is installed in the receiving cavity of the pressure cylinder 432. The two ends of the spring 434 are connected to the pressure cylinder 432 and the sleeve shaft 431 respectively. The spring 434 is always in a compressed state. The spring 434 is used to provide preload to the threaded connection of the sleeve shaft 431 and to provide axial force to the pressure cylinder 432 so that the pressure cylinder 432 can be stably positioned in the axial position of the connecting rod 20.

[0079] An axial guide groove is provided on the pressure cylinder 432, and a protruding limiting block is provided on the sleeve shaft 431. The limiting block can be axially moved and engaged in the guide groove. The guide groove and the limiting block are used for guiding and improving the stability of the axial movement of the sleeve shaft 431.

[0080] In this embodiment, the connecting rod 20 can be driven to rotate relative to the sleeve shaft 431 by rotating the grip handle 24, thereby driving the pressure cylinder 432 to move relative to the sleeve shaft 431. When the grip handle 24 rotates counterclockwise, the connecting rod 20 rotates relative to the sleeve shaft 431, and the pressure cylinder 432 moves closer to the sleeve shaft 431. The pressure cylinder 432 can press down the rotating locking member 421, causing the rotating locking member 421 to separate from the outer sleeve 411. When the grip handle 24 rotates clockwise, the connecting rod 20 rotates relative to the sleeve shaft 431, and the pressure cylinder 432 moves away from the sleeve shaft 431. The pressure cylinder 432 leaves the rotating locking member 421, and under the action of the spring 434, the rotating locking member 421 pops out and engages with the outer sleeve 411. When the grip handle 24 continues to rotate clockwise, the second clamp 13 moves closer to the first clamp 12, forming a clamping of the device.

[0081] In this embodiment, the method of using the clamping device is described using clamping a syringe as an example. The clamping steps are as follows:

[0082] S21: The doctor holds the handle 24 with one hand and rotates it counterclockwise with their fingers; the connecting rod 20 rotates relative to the sleeve shaft 431, and the pressure cylinder 432 moves closer to the sleeve shaft 431. The pressure cylinder 432 can press down the rotating locking piece 421, separating the rotating locking piece 421 from the outer sleeve 411, putting it in the unlocked state. Please refer to [reference needed]. Figure 9 ;

[0083] S12: Place the syringe between the first clamp 12 and the second clamp 13, and then push the second clamp 13, the connecting rod 20 and the locking assembly 40 together toward the first clamp 12 by the thumb or palm, so that the first clamp 12 and the second clamp 13 form a preliminary clamping of the syringe.

[0084] S13: By rotating the grip handle 24 clockwise with your fingers, the connecting rod 20 rotates relative to the sleeve shaft 431, and the pressure cylinder 432 moves away from the sleeve shaft 431. The pressure cylinder 432 disengages from the rotating locking piece 421, and under the action of the spring 434, the rotating locking piece 421 pops out and engages with the outer sleeve 411, forming a locked state. Please refer to [link / reference]. Figure 8 ;

[0085] S14: Continue to rotate the grip handle 24 clockwise with your fingers. The connecting rod 20 rotates relative to the sleeve shaft 431. The connecting rod 20 drives the second clamp 13 to move toward the first clamp 12, so that the second clamp 13 is driven to abut against the syringe. The first clamp 12 and the second clamp 13 clamp the syringe. This state is the clamped state.

[0086] If it is necessary to release the syringe, first rotate the grip handle 24 counterclockwise so that the second clamp 13 is away from the first clamp 12, partially releasing the syringe, and then rotate until the rotating latch 421 separates from the outer sleeve 411, forming an unlocked state. Finally, move the grip handle 24 axially to move the second clamp 13 a large distance away, at which point the syringe can be removed.

[0087] The clamping device in this embodiment is a one-way ratchet structure. In both the unlocked and locked states, the second clamping body 13 can move quickly toward the first clamping body 12, facilitating the doctor's operation. In the unlocked state, rotating the locking piece 421 separates it from the outer sleeve 411, enabling the second clamping body 13 to slide quickly in the opposite direction. This makes the clamping device easy to operate, saving time and effort.

[0088] The above examples illustrate the present invention only to aid in understanding it and are not intended to limit the scope of the invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the principles of this invention.

Claims

1. A clamping device, characterized in that, include The clamping body includes a mounting base, a first clamping body, and a second clamping body. The first clamping body is disposed on the mounting base, and the second clamping body is movably disposed on the mounting base. The first clamping body and the second clamping body are used together to clamp the object being clamped. A connecting rod is axially movable on the mounting base, and one end of the connecting rod is connected to the second clamping body for driving the second clamping body to move relative to the first clamping body; A locking assembly includes a first locking member, a second locking member, and an adjusting member. The first locking member is an outer sleeve with internal teeth, and the connecting rod passes through the outer sleeve. The second locking member is a rotating snap-fit ​​member used to engage or disengage with the internal teeth of the outer sleeve. The adjusting member includes a sleeve shaft, a pressure cylinder, and a return member. The pressure cylinder is sleeved on the connecting rod, and a receiving cavity is provided at the end of the pressure cylinder away from the second clamp. The sleeve shaft is axially movable and sleeved on the connecting rod, and one end of the sleeve shaft can move into the receiving cavity of the pressure cylinder. The rotating snap-fit ​​member is installed on the sleeve shaft, and one end of the rotating snap-fit ​​member is rotatably connected to the sleeve shaft, while the other end of the rotating snap-fit ​​member is a free end. The return member is disposed on the sleeve shaft and connected to the free end of the rotating snap-fit ​​member. The adjusting member is used to drive the rotating snap-fit ​​member to switch between a locked position and an unlocked position; in the locked position, the returning member is used to drive the free end of the rotating snap-fit ​​member to pop out and connect with the inner teeth of the outer sleeve; in the unlocked position, the pressing cylinder is used to press the rotating snap-fit ​​member back so that the free end of the rotating snap-fit ​​member separates from the inner teeth of the outer sleeve.

2. The clamping device as described in claim 1, characterized in that, The inner teeth of the outer sleeve are unidirectional teeth.

3. The clamping device as described in claim 1, characterized in that, The connecting rod is provided with a shoulder, and the end of the pressure cylinder near the second clamp abuts against the shoulder.

4. The clamping device as described in claim 1, characterized in that, The connecting rod is provided with an external thread, and the sleeve is provided with an internal thread. The internal thread of the sleeve engages with the external thread of the connecting rod.

5. The clamping device as described in claim 1, characterized in that, The sleeve shaft is provided with a mounting groove, and the rotating snap-fit ​​component and the return component are installed in the mounting groove of the sleeve shaft.

6. The clamping device as described in claim 5, characterized in that, The sleeve shaft is provided with two mounting slots symmetrical along the axis, and each mounting slot is equipped with a rotating snap-fit ​​component and a return component.

7. A clamping device, characterized in that, include The clamping body includes a mounting base, a first clamping body, and a second clamping body. The first clamping body is disposed on the mounting base, and the second clamping body is movably disposed on the mounting base. The first clamping body and the second clamping body are used together to clamp the object being clamped. A connecting rod is axially movable on the mounting base, and one end of the connecting rod is connected to the second clamping body for driving the second clamping body to move relative to the first clamping body; The locking assembly includes a first locking member, a second locking member, and an adjusting member. The first locking member is an outer sleeve with one-way teeth, the one-way teeth including a plurality of annular teeth arranged side by side, and the connecting rod passes through the outer sleeve. The second locking member is a rotating snap-fit ​​member, which is used to engage or disengage with the one-way teeth of the outer sleeve. The adjusting member is connected to the rotating snap-fit ​​member, and the adjusting member is used to drive the rotating snap-fit ​​member to switch between a locked position and an unlocked position. In the locked position, the adjusting member is used to drive the rotating snap-fit ​​member to connect with the one-way teeth of the outer sleeve. In the unlocked position, the adjusting member is used to drive the rotating snap-fit ​​member to separate from the one-way teeth of the outer sleeve.

8. The clamping device as described in claim 7, characterized in that, The adjusting component includes a sleeve shaft, a pressure cylinder, and a return component. The connecting rod has a shoulder and an external thread. The pressure cylinder and the sleeve shaft are sleeved on the connecting rod. One end of the pressure cylinder abuts against the shoulder, and the end of the pressure cylinder away from the shoulder has a receiving cavity. The sleeve shaft has an internal thread, which meshes with the external thread of the connecting rod. One end of the sleeve shaft is movable into the receiving cavity of the pressure cylinder. The sleeve shaft has a mounting groove, and the rotating snap-fit ​​component is installed in the mounting groove of the sleeve shaft. One end of the rotating snap-fit ​​component is rotatably connected to the sleeve shaft, and the other end of the rotating snap-fit ​​component is a free end. The return component is located on the sleeve shaft and is connected to the free end of the rotating snap-fit ​​component. The return component is used to drive the free end of the rotating snap-fit ​​component to pop out and connect with the one-way teeth of the outer sleeve. The pressure cylinder is used to press the rotating snap-fit ​​component back so that the free end of the rotating snap-fit ​​component separates from the one-way teeth of the outer sleeve.

9. The clamping device as described in claim 7, characterized in that, The rotating latching member and the one-way teeth of the outer sleeve form a ratchet structure. The rotating latching member can move freely relative to the one-way teeth toward the second clamping body, while the one-way teeth block and restrict the rotating latching member from moving freely away from the second clamping body.

10. The clamping device as described in claim 1 or 8, characterized in that, The return element is a spring or a spring-loaded spring.

11. The clamping device as described in claim 1 or 8, characterized in that, The recovery component is an elastic structure, which has an elastic part that is connected to the rotating snap-fit ​​component.

12. The clamping device as described in claim 1 or 8, characterized in that, The adjusting component also includes a spring, which is disposed between the pressure cylinder and the sleeve shaft.

13. The clamping device as described in claim 12, characterized in that, The spring is located inside the receiving cavity of the pressure cylinder. One end of the spring is connected to the end of the receiving cavity near the second clamping body, and the other end of the spring is connected to the end of the sleeve shaft near the second clamping body.

14. The clamping device as described in claim 1 or 8, characterized in that, The pressure cylinder is provided with an axial guide groove, and the sleeve shaft is provided with a protruding limiting block, which is axially movable and disposed in the guide groove.

15. The clamping device as described in any one of claims 1 to 14, characterized in that, A grip is installed at the end of the connecting rod away from the mounting base.

16. The clamping device as described in claim 15, characterized in that, The second clamp is rotatably connected to the end of the connecting rod, and the second clamp has a clearance that can be adjusted axially relative to the connecting rod.

17. The clamping device as claimed in any one of claims 1 to 16, characterized in that, One of the mounting base and the second clamp is provided with a linear guide rail, and the other is provided with a linear guide groove adapted to the linear guide rail. The linear guide rail and the linear guide groove are slidably connected so that the second clamp can slide in a straight line relative to the mounting base.

18. The clamping device as claimed in any one of claims 1 to 17, characterized in that, The first clamp and the mounting base are an integrated structure.

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