Valve compression device

Abstract

Disclosed is a valve compression device, which comprises a compression housing (10), a communication tube (20), a funnel tube (30), compression arc plates (40), and a pressing assembly. The communication tube (20) is smoothly connected to the small-diameter end of the funnel tube (30); two opposite sides of the compression housing (10) are each provided with a placement opening (101), wherein one placement opening (101) is in communication with the communication tube (20), and the other placement opening (101) is in communication with the funnel tube (30). A plurality of operation ports (31) are formed in the circumferential direction of the funnel tube (30). The pressing assembly comprises traction plates (50) with slopes, an elastic support assembly (60), and a moving ring (70). When the moving ring (70) moves from the communication tube (20) to the funnel tube (30), the moving ring (70) simultaneously extrudes the plurality of traction plates (50) to drive the traction plates (50) to move towards the funnel tube (30). The compression arc plates (40) are in one-to-one correspondence with the operation ports (31), and are connected to the traction plates (50) by means of connecting rods (41). When the traction plates (50) move towards the funnel tube (30), the compression arc plates (40) pass through the operation ports (31) and move towards the axis of the funnel tube (30), such that a valve can be quickly compressed, and damage in the valve compression process is avoided.

Description

A valve compression device Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular relates to a valve compression device. Background Art

[0002] Transcatheter valve intervention usually involves suturing the pericardial tissue to the valve frame with sutures. Before performing the interventional valve surgery, a specific catheter is used to load and transport the valve to the target position for valve release and deployment. During the loading and transportation process, damage to the artificial valve needs to be minimized as much as possible.

[0003] When loading an existing artificial valve, the valve holder loaded with the artificial valve is connected by a connecting structure such as a claw, and the artificial valve is dragged into a compression lumen with a tapered inner diameter, so that the artificial valve enters from the large end of the compression lumen and exits from the small end. During the dragging process, the diameter of the lumen is continuously reduced to achieve compression of the size of the artificial valve, making it easier for the artificial valve to be introduced into the catheter and loaded onto the delivery system. However, the existing valve holder loaded with the artificial valve still has the following problems during the compression process:

[0004] The existing valve frame itself has a strong radial supporting force, and the resistance is large when the valve is dragged. At the same time, the valve frame equipped with an artificial valve compresses the size of the artificial valve as the tube diameter continues to decrease. The force pushing the valve frame to move the artificial valve is uneven, which can easily cause damage or even breakage at the sutures between the artificial valve and the valve frame, increasing the cost of use. Therefore, it is very necessary to involve a valve compression device for use in the existing medical device field.

[0005] Summary of the Invention

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a valve compression device that can quickly compress the valve and avoid damage to the valve during the compression process.

[0007] The present invention provides the following technical solutions:

[0008] Provided is a valve compression device comprising a compression housing, a connecting tube, a funnel tube, a compression arc plate, and a pressing assembly; the connecting tube is smoothly connected to the small-diameter end of the funnel tube to form a passage for accommodating the valve; placement openings are provided on opposite sides of the compression housing, one of which communicates with the connecting tube and the other communicates with the large-diameter end of the funnel tube; the funnel tube is circumferentially provided with a plurality of operating openings penetrating the tube wall;

[0009] The pressing assembly includes a traction plate with a slope, an elastic support assembly, and a movable ring; the traction plates are provided in plurality and surround the funnel tube; one end of the elastic support assembly is connected to the inner side of the traction plate, and the other end is mounted on the circumference of the connecting tube or the funnel tube; the movable ring is sleeved on the outer side of the plurality of traction plates and is movable along the axial direction of the funnel tube; when the movable ring moves from the connecting tube to the funnel tube, the movable ring simultaneously squeezes the plurality of traction plates to drive the traction plates toward the funnel tube;

[0010] The compression arc plate corresponds to the operating port one by one and is connected to the traction plate through a connecting rod; when the traction plate moves toward the funnel tube, the compression arc plate passes through the operating port and moves toward the axis of the funnel tube.

[0011] Preferably, the traction plate includes a first plane portion, a first slope portion, a second plane portion, a second slope portion and a third plane portion connected in sequence; the first plane portion, the first slope portion and the second plane portion are located on the outside of the connecting tube; the second slope portion and the third plane portion are located on the outside of the funnel tube; the inner side of the third plane portion is connected to the connecting rod; the inner diameter of the ring formed by multiple first plane portions is equal to or smaller than the inner diameter of the moving ring; the inner diameter of the ring formed by multiple second plane portions is larger than the inner diameter of the moving ring; the inner diameter of the ring formed by multiple third plane portions is larger than the inner diameter of the ring formed by multiple second plane portions.

[0012] Preferably, a first limit plate is provided at the end of the first planar portion away from the first slope portion, and a second limit plate is provided at the connecting section between the second planar portion and the second slope portion; the radial dimension of the first limit plate in the connecting pipe is larger than the radial dimension of the movable ring.

[0013] Preferably, there are three groups of elastic support components, the first group of elastic support components is located between the first plane portion and the connecting tube, the second group of elastic support components is located between the second plane portion and the connecting tube, and the third group of elastic support components is located between the third plane portion and the funnel tube;

[0014] The elastic support assembly includes a support spring and a telescopic rod; the support spring is sleeved on the outside of the telescopic rod;

[0015] The funnel tube is also provided with a plurality of limit blocks; the limit blocks correspond one-to-one to the operating ports, and the limit blocks extend from the surface of the funnel tube to the operating port; the third planar portion is also provided with a limit rod toward the funnel tube side; the limit rod is connected to a connecting plate; when the third planar plate moves into position toward the funnel tube, the connecting plate abuts against the surface of the limit block to inhibit the compression arc plate from moving toward the axis of the funnel tube.

[0016] Preferably, a handle is connected to the outer side of the compression shell; a transmission assembly for driving the moving ring to move is provided in the handle; a rotating handwheel is provided on the handle, and the rotating handwheel is connected to the transmission assembly to drive the moving ring.

[0017] Preferably, the transmission assembly includes a first miter bevel gear, a second miter bevel gear, a third miter bevel gear, a fourth miter bevel gear and a rotating rod; an operating chamber is provided inside the handle; a handwheel rod is connected to the axis of the rotating handwheel, the handwheel rod is rotatably connected to the handle, and the end away from the rotating handwheel extends into the operating chamber; the end of the handwheel rod extending into the operating chamber is sleeved with a fourth miter bevel gear; the rotating rod is rotatably connected to the handle, one end of the rotating rod is located in the operating chamber, and the other end is located inside the compression shell; the end of the rotating rod located in the operating chamber is provided with a third miter bevel gear, and the end located inside the compression shell is provided with a second miter bevel gear; the third miter bevel gear is meshed with the fourth miter bevel gear;

[0018] A pulling block is also provided in the compression shell, and a slot is provided on one side of the pulling block. A ball screw is rotatably connected to the pulling block, and a connecting arm is connected to the outer periphery of the movable ring, and the connecting arm is connected to the moving part of the ball screw; the end of the ball screw extending out of the pulling block is connected to a first miter gear; the first miter gear is meshed with a second miter gear.

[0019] Preferably, a plurality of rotation grooves are formed on the inner wall of the movable ring; and a plurality of pressure rollers are rotatably connected in the rotation grooves.

[0020] Preferably, the distance between the two placement ports is greater than the sum of the axial dimensions of the connecting tube and the funnel tube; a conducting assembly is connected to the placement port close to the funnel tube; the conducting assembly includes a conducting tube and a conducting guide rod; the conducting tube is coaxially sleeved in the placement port and can translate along the axial direction of the placement port; the inner diameter of the conducting tube is adapted to the inner diameter of the large end of the funnel tube; the conducting guide rod passes through the compression shell and can move back and forth along the compression shell, one end of the conducting guide rod is connected to the end of the conducting tube extending out of the compression shell, and the other end is facing a limiting structure in the compression shell; when the conducting guide rod moves to the end located in the compression shell and abuts against the limiting structure, the pipe mouth of the conducting tube abuts against the large-diameter pipe mouth of the funnel tube.

[0021] Preferably, a return spring and a pressure plate are provided at the end of the conduction guide rod located in the compression shell; the pressure plate is connected to the end of the conduction guide rod extending into the compression shell; the return spring is sleeved on the outside of the conduction guide rod, with one end connected to the inner wall of the compression shell and the other end connected to the pressure plate.

[0022] Preferably, the compression shell is provided with a plurality of limit assemblies surrounding the outside of the conducting tube, and the limit assemblies include a fixed rod and a rotating block; the fixed rod is fixed on the outer surface of the compression shell, and the rotating block is rotatably connected to the end of the fixed rod; the end face of the conducting tube located outside the compression shell is provided with an outwardly extending flange; when the conducting tube abuts against the funnel tube, the rotating block can rotate to the outside of the flange end face.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] (1) The compression of the valve is located inside the compression shell, which can prevent the external environment from affecting the sterile environment of the valve compression; a connecting tube and a funnel tube are provided in the compression shell, and an operation port is provided on the funnel tube. The compression arc plate passes through the operation port to compress the valve. There are multiple compression arc plates and they surround the outside of the funnel tube. A traction plate is provided on the outside of the funnel tube. The traction plate has a slope, and a movable ring is provided on the outside of the traction plate. When the movable ring moves, it can squeeze multiple compression arc plates at the same time, so that multiple compression arc plates can squeeze the valve to be compressed at the same time, thereby quickly completing the compression of the valve and avoiding damage to the valve during the compression process.

[0025] (2) A conducting assembly is provided between the placement port of the compression shell and the funnel tube. The provision of the conducting assembly can ensure that there is sufficient space inside the compression shell, while facilitating the placement of the valve to be compressed in the designated position of the funnel tube; the initial position of the conducting tube is away from the funnel tube, thereby avoiding interference with the compression of the valve by the conducting tube and damage to the valve; in order to facilitate the placement of the valve to be compressed in the funnel tube, a limiting assembly is also provided on the outside of the compression shell, thereby limiting the automatic resetting of the conducting tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] FIG1 is a schematic diagram of the overall appearance structure of the present invention;

[0027] FIG2 is a schematic cross-sectional view of the present invention taken from the connecting surface of the connecting pipe and the funnel pipe;

[0028] FIG3 is a longitudinal sectional view of the compression housing of the present invention;

[0029] FIG4 is a schematic structural diagram of a cross-sectional view of a partially compressed housing of the present invention;

[0030] FIG5 is a schematic diagram of the interior of the compression housing of the present invention;

[0031] FIG6 is a schematic diagram of the overall structure of the traction plate of the present invention;

[0032] FIG7 is a partial structural diagram of the transmission assembly of the present invention.

[0033] In the figure, the marks are: 10 is a compression shell, 101 is a placement port, 11 is a handle, 12 is a rotating hand wheel, 13 is a hand wheel rod, and 14 is an operating chamber;

[0034] 20 is a connecting pipe;

[0035] 30 is a funnel tube, 31 is an operation port, and 32 is a limit block;

[0036] 40 is a compression arc plate, 41 is a connecting rod, 42 is a limiting rod, and 43 is a connecting plate;

[0037] 50 is a traction plate, 51 is a first plane portion, 52 is a first slope portion, 53 is a second plane portion, 54 is a second slope portion, 55 is a third plane portion, 56 is a first limiting plate, and 57 is a second limiting plate;

[0038] 60 is an elastic support assembly, 61 is a support spring, and 62 is a telescopic rod;

[0039] 70 is a moving ring, 71 is a connecting arm, and 72 is a pressure roller;

[0040] 80 is a transmission assembly, 81 is a first miter gear, 82 is a second miter gear, 83 is a third miter gear, 84 is a fourth miter gear, 85 is a rotating rod, 86 is a pulling block, and 87 is a ball screw.

[0041] 90 is a conducting component, 91 is a conducting tube, 92 is a conducting guide rod, 93 is a return spring, 94 is a pressure plate, 95 is a fixed rod, and 96 is a rotating block. DETAILED DESCRIPTION

[0042] The present invention will now be described in further detail with reference to the accompanying drawings.

[0043] It should be noted that the terms such as "upper", "lower", "left", "right", "front", "back", etc. cited in the invention are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0044] As shown in FIG1-7 , a valve compression device is provided, including a compression housing 10 and a connecting tube 20 , a funnel tube 30 , a compression arc plate 40 and a pressing assembly arranged in the compression housing 10 .

[0045] As shown in Figure 3, the connecting tube 20 is smoothly connected to the small-diameter end of the funnel tube 30 to form a channel for accommodating the valve; placement ports 101 are provided on opposite sides of the compression shell 10, one of the placement ports 101 is connected to the connecting tube 20, and the other placement port 101 is connected to the large-diameter end of the funnel tube 30; the shape of the compression shell 10 can be one of the common shapes such as round, square and polygonal; the outer sides of the two placement ports 101 can be provided with covers or other components detachably connected to the placement ports 101 as needed, so as to further ensure the sterile environment inside the compression shell 10. The funnel tube 30 is circumferentially provided with a plurality of operating ports 31 penetrating the tube wall; the minor diameter of the funnel tube 30 is adapted to the inner diameter of the connecting tube 20, the funnel tube 30 and the connecting tube 20 are integrally formed or welded together, and the connecting gap between the funnel tube 30 and the connecting tube 20 is smooth, that is, the gap between the connecting tube 20 and the funnel tube 30 will not cause damage to the valve; the inner diameter of the large end of the funnel tube 30 can place the valve before compression, and the inner diameter of the connecting tube 20 can accommodate the compressed valve; the placement port 101 close to the funnel tube 30 is used to deliver the uncompressed valve, and the placement port 101 close to the connecting tube 20 is used to deliver the compressed valve, and the compressed valve is taken out from the placement port 101, and reference can be made to the existing technology.

[0046] As shown in Figures 4 and 5, the pressing assembly includes a traction plate 50 with a slope, an elastic support assembly 60 and a moving ring 70; there are multiple traction plates 50 and they surround the funnel tube 30. One end of the elastic support assembly 60 is connected to the inner side of the traction plate 50, and the other end is installed on the circumference of the connecting tube 20 or the funnel tube 30; the moving ring 70 is sleeved on the outer side of the multiple traction plates 50 and can move along the axial direction of the funnel tube 30; when the moving ring 70 moves from the connecting tube 20 to the funnel tube 30, the moving ring 70 simultaneously squeezes the multiple traction plates 50 to drive the traction plates 50 to move toward the funnel tube 30; the elastic support assembly 60 can provide support for the traction plates 50, and can also drive the traction plates 50 to return to their original positions when the squeezing force of the moving ring 70 on the traction plates 50 disappears.

[0047] The compression arc plate 40 corresponds one-to-one to the operating port 31 and is connected to the traction plate 50 through the connecting rod 41; the number of compression arc plates 40 and the number of operating ports 31 correspond one-to-one, and the number of compression arc plates 40 can be three, four or six, etc., and the number of compression arc plates 40 and the number of connecting rods 41 correspond one-to-one; when the traction plate 50 moves toward the funnel tube 30, that is, when the traction plate 50 squeezes the elastic support component 60, the compression arc plate 40 passes through the operating port 31 and moves toward the axis of the funnel tube 30. When multiple compression arc plates 40 move toward the axis of the funnel tube 30 at the same time, the valve placed at the large diameter end of the funnel tube 30 can be compressed. The compression is achieved by the compression arc plate 40, which can avoid damage to the valve. The simultaneous action of multiple compression arc plates 40 can ensure that the valve is stable in the compression process; at the same time, the elastic support component 60 can also play a certain role in buffering the movement of the compression arc plate 40 during the compression process of the valve, thereby further avoiding valve damage.

[0048] Specifically, as shown in Figures 5 and 6, the traction plate 50 includes a first plane portion 51, a first slope portion 52, a second plane portion 53, a second slope portion 54 and a third plane portion 55 connected in sequence; the first plane portion 51, the first slope portion 52, the second plane portion 53, the second slope portion 54 and the third plane portion 55 are all arc-shaped in cross-section in the radial direction of the connecting pipe 20, and are connected by welding or integrally formed; the first plane portion 51, the first slope portion 52 and the second plane portion 53 are located on the outside of the connecting pipe 20; the second slope portion 54 and the third plane portion 55 are located on the inside of the funnel tube 30 The outer side; the inner side of the third planar portion 55 is connected to the connecting rod 41, and the inner diameter of the ring formed by the multiple first planar portions 51 is equal to or smaller than the inner diameter of the moving ring 70; the inner diameter of the ring formed by the multiple second planar portions 53 (before compression) is larger than the inner diameter of the moving ring 70; the inner diameter of the ring formed by the multiple third planar portions 55 is larger than the inner diameter of the ring formed by the multiple second planar portions 53, that is, in the process of the moving ring 70 moving from the first planar portion 51 to the second planar portion 53, the traction plate 50 is squeezed as a whole, so that the traction plate 50 drives the compression arc plate 40 to press the valve.

[0049] In some other embodiments, a first limiting plate 56 is provided at the end of the first planar portion 51 away from the first sloped portion 52, and a second limiting plate 57 is provided at the connecting section of the second planar portion 53 and the second sloped portion 54; the dimension of the first limiting plate 56 in the radial direction of the connecting pipe 20 is greater than the dimension of the second limiting plate 57 in the radial direction of the connecting pipe 20; the dimensions of the first limiting plate 56 and the second limiting plate 57 in the radial direction of the connecting pipe 20 are both greater than the radial dimension of the movable ring 70, the first limiting plate 56 and the second limiting plate 57 can prevent the movable ring 70 from separating from the traction plate 50, and the second limiting plate 57 can limit the moving distance of the movable ring 70 to a certain extent; Of course, in other embodiments, the dimension of the first limiting plate 56 in the radial direction of the connecting tube 20 is larger than the radial dimension of the movable ring 70, the dimension of the second limiting plate 57 in the radial direction of the connecting tube 20 is smaller than the radial dimension of the movable ring 70, and the dimension of the second limiting plate 57 in the radial direction of the connecting tube 20 is smaller than the distance from the second plane portion 53 to the third plane portion 55 in the radial direction of the connecting tube 20, that is, the movable ring 70 can pass through the second limiting plate 57 and move toward the third plane portion 55, thereby driving the third plane portion 55 to further drive the compression arc plate 40 to squeeze the valve, or it can compress valves of different sizes according to different compression requirements.

[0050] In this embodiment, there are three groups of elastic support components 60, the first group of elastic support components 60 is located between the first plane portion 51 and the connecting tube 20, the second group of elastic support components 60 is located between the second plane portion 53 and the connecting tube 20, and the third group of elastic support components 60 is located between the third plane portion 55 and the funnel tube 30; the number of elastic support components 60 is the same as the number of traction plates 50; each group of elastic support components 60 includes a support spring 61 and a telescopic rod 62; the support spring 61 is sleeved on the outside of the telescopic rod 62; one end of the telescopic rod 62 and the support spring 61 are both installed on the inner surface of the traction plate 50, and the other end are both installed on the surface of the connecting tube 20 or the funnel tube 30; the moving distance of the traction plate 50, that is, the moving distance of the compression arc plate 40, can be controlled by the maximum telescopic height of the telescopic rod 62. Of course, the moving distance of the compression arc plate 40 can also be controlled by other limiting methods.

[0051] Furthermore, the funnel tube 30 is provided with a plurality of limit blocks 32; the limit blocks 32 correspond one-to-one to the operating port 31, and the limit blocks 32 extend from the surface of the funnel tube 30 to the operating port 31; the third planar portion 55 is also provided with a limit rod 42 toward the funnel tube 30; the limit rod 42 is connected to a connecting plate 43; when the third planar portion 55 moves into position toward the funnel tube 30, the connecting plate 43 abuts against the surface of the limit block 32 to inhibit the compression arc plate 40 from moving toward the axis of the funnel tube 30.

[0052] In some other embodiments, referring to Figures 2 and 7, a handle 11 is connected to the outer side of the compression shell 10; a transmission assembly 80 for driving the movable ring 70 to move is provided in the handle 11; a rotating handwheel 12 is provided on the handle 11, and the rotating handwheel 12 is connected to the transmission assembly 80. The rotating handwheel 12 is rotated by manpower to drive the transmission assembly 80 to move, so as to drive the movable ring 70 to move.

[0053] Specifically, the transmission assembly 80 includes a first miter bevel gear 81, a second miter bevel gear 82, a third miter bevel gear 83, a fourth miter bevel gear 84 and a rotating rod 85; an operating chamber 14 is provided inside the handle 11; a handwheel rod 13 is connected to the central axis of the rotating handwheel 12, the handwheel rod 13 is rotatably connected to the handle 11, and the end away from the rotating handwheel 12 extends into the operating chamber 14; the end of the handwheel rod 13 extending into the operating chamber 14 is sleeved with the fourth miter bevel gear 84; by rotating the handwheel 12, the handwheel rod 13 drives the fourth miter bevel gear 84 to rotate synchronously, There is no relative movement between the rotating handwheel 12 and the handwheel rod 13; the rotating rod 85 is rotatably connected to the handle 11, one end of the rotating rod 85 is located in the operating chamber 14, and the other end is located inside the compression shell 10; the end of the rotating rod 85 located in the operating chamber 14 is provided with a third miter gear 83, and the end located inside the compression shell 10 is provided with a second miter gear 82; the third miter gear 83 is meshed with the fourth miter gear 84; the axis of the rotating rod 85 and the handwheel rod 13 are perpendicular to each other, and a pulling block 86 is also provided in the compression shell 10, and the pulling block 86 A slot is provided on one side, and a ball screw 87 is rotatably connected to the pulling block 86. The axial direction of the ball screw 87 is parallel to the axial direction of the handwheel rod 13. The outer periphery of the moving ring 70 is connected to a connecting arm 71, and the connecting arm 71 is connected to the moving part of the ball screw 87, that is, the end of the connecting arm 71 extends into the pulling block 86 and is threadedly connected to the ball screw 87; the end of the ball screw 87 extending out of the pulling block 86 is connected to the first equal-diameter bevel gear 81; the first equal-diameter bevel gear 81 is meshed with the second equal-diameter bevel gear 82; the meshing is completed by two pairs of mutually meshing equal-diameter bevel gears, which can ensure the accuracy of the moving distance of the moving ring 70 and facilitate the control of the start and stop of the moving ring 70.

[0054] In some other embodiments, a plurality of rotating grooves are opened on the inner wall of the movable ring 70; a plurality of pressure rollers 72 are rotatably connected in the rotating grooves. The setting of the pressure rollers 72 can convert the moving friction between the movable ring 70 and the traction plate 50 into rolling friction, thereby reducing friction.

[0055] In some other embodiments, the distance between the two placement ports 101 is greater than the sum of the axial dimensions of the connecting tube 20 and the funnel tube 30, so that there is enough space inside the compression shell 10; a conducting component 90 is connected to the placement port 101 close to the funnel tube 30; the conducting component 90 is provided to facilitate placing the valve to be compressed at a specified position of the funnel tube 30; the conducting component 90 includes a conducting tube 91 and a conducting guide rod 92; the conducting tube 91 is coaxially sleeved in the placement port 101 and can translate along the axial direction of the placement port 101; the inner diameter of the conducting tube 91 is the same as that of the funnel tube 30; the conducting guide rod 92 passes through the compression housing 10 and can move back and forth along the axial direction of the compression housing 10 (i.e., the axial direction of the placement port 101). The conducting guide rod 92 and the conducting tube 91 are respectively connected to the compression housing 10 in a movable manner as described in the prior art. One end of the conducting guide rod 92 is connected to the end of the conducting tube 91 extending out of the compression housing 10, and the other end faces a limiting structure within the compression housing 10. When the conducting guide rod 92 moves to the end located within the compression housing 10 and abuts against the limiting structure, the orifice of the conducting tube 91 abuts against the large-diameter orifice of the funnel tube 30. The limiting structure can be a fixed structure directly fixed within the compression housing, or it can be a connecting rod between the compression arc plate and the traction plate, as long as it can limit the guide rod.

[0056] Specifically, a return spring 93 and a pressure plate 94 are provided at the end of the conduction guide rod 92 located in the compression shell 10; the pressure plate 94 is connected to the end of the conduction guide rod 92 extending into the compression shell 10; the return spring 93 is sleeved on the outside of the conduction guide rod 92, and one end is connected to the inner wall of the compression shell 10, and the other end is connected to the pressure plate 94. The pressure plate 94 can increase the area of ​​the conduction guide rod 92 contacting the connecting rod 41.

[0057] Specifically, the compression shell 10 is provided with a plurality of limiting components surrounding the outside of the conducting tube 91, and the limiting components include a fixed rod 95 and a rotating block 96; the fixed rod 95 is fixed on the outer surface of the compression shell 10, and the rotating block 96 is rotatably connected to the end of the fixed rod 95; the end face of the conducting tube 91 located outside the compression shell 10 is provided with an outwardly extending flange; when the conducting tube 91 abuts against the funnel tube 30, the rotating block 96 can be rotated to the outside of the flange end face, thereby preventing the conducting tube 91 from resetting.

[0058] The working process of the present invention is as follows: the valve to be compressed is placed at the large diameter end of the funnel tube 30, and the rotating handwheel 12 is rotated manually. The rotating handwheel 12 drives the ball screw 87 to rotate. Under the action of the ball screw 87, the movable ring 70 is driven to move from the first plane portion 51 to the second plane portion 53. During the movement, the movable ring 70 simultaneously squeezes the multiple first slope portions 52 surrounding the outside of the connecting tube 20. The first slope portion 52 drives the third plane portion 55 to move toward the axis of the funnel tube 30. The action of the third plane portion 55 drives the compression arc plate 40 to pass through the operating port 31 to compress the valve located in the funnel tube 30. When the connecting plate 43 rests on the surface of the limit block 32, the compression of the valve is completed, and the compressed valve can be removed by relying on existing technology. When the compression is completed and the components need to be reset, the reverse operation can be performed.

[0059] When the valve to be compressed is placed in the funnel tube 30 through the conducting assembly 90: the conducting tube 91 is pressed, and the conducting tube 91 approaches the funnel tube 30 along the axial direction of the placement port 101, and the conducting guide rod 92 also moves synchronously into the compression shell 10. When the pressure plate 94 at the tail of the conducting guide rod 92 abuts against the connecting rod 41, the rotating block 96 is rotated, so that the rotating block 96 limits the movement of the conducting tube 91; the valve to be compressed is placed in the conducting tube 91 connected to the funnel tube 30, and the valve to be compressed is pushed to the funnel tube 30; when the valve to be compressed reaches the target position to be compressed, the rotating block 96 is rotated in the opposite direction to release the restriction of the rotating block 96 on the conducting tube 91. Under the action of the reset spring 93, the conducting tube 91 drives the conducting guide rod 92 to reset, and the conducting tube 91 is away from the funnel tube 30, thereby avoiding affecting the compression process.

[0060] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0061] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the principles of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should be considered within the scope of protection of the present invention.

Claims

1. A valve compression device, characterized in that: The invention comprises a compression shell (10), a connecting tube (20), a funnel tube (30), a compression arc plate (40) and a pressing assembly; the connecting tube (20) is smoothly connected to the small-diameter end of the funnel tube (30) to form a channel for accommodating the valve; placement ports (101) are provided on opposite sides of the compression shell (10), one of the placement ports (101) is communicated with the connecting tube (20), and the other placement port (101) is communicated with the large-diameter end of the funnel tube (30); a plurality of operation ports (31) penetrating the tube wall are provided in the circumferential direction of the funnel tube (30); The pressing assembly comprises a traction plate (50) with a slope, an elastic support assembly (60) and a moving ring (70); there are a plurality of traction plates (50) and they surround the funnel tube (30); one end of the elastic support assembly (60) is connected to the inner side of the traction plate (50), and the other end is installed on the peripheral surface of the connecting tube (20) or the funnel tube (30); the moving ring (70) is sleeved on the outer side of the plurality of traction plates (50) and can move along the axial direction of the funnel tube (30); when the moving ring (70) moves from the connecting tube (20) to the funnel tube (30), the moving ring (70) simultaneously squeezes the plurality of traction plates (50) to drive the traction plates (50) to move toward the funnel tube (30); The compression arc plate (40) corresponds to the operating port (31) one by one, and is connected to the traction plate (50) via a connecting rod (41); when the traction plate (50) moves toward the funnel tube (30), the compression arc plate (40) passes through the operating port (31) and moves toward the axis of the funnel tube (30).

2. The valve compression device according to claim 1, characterized in that: The traction plate (50) comprises a first plane portion (51), a first slope portion (52), a second plane portion (53), a second slope portion (54) and a third plane portion (55) which are connected in sequence; the first plane portion (51), the first slope portion (52) and the second plane portion (53) are located on the outside of the connecting pipe (20); the second slope portion (54) and the third plane portion (55) are located on the outside of the funnel tube (30); the inner side of the third plane portion (55) is connected to the connecting rod (41); the inner diameter of the ring formed by the plurality of the first plane portions (51) is equal to or smaller than the inner diameter of the moving ring (70); the inner diameter of the ring formed by the plurality of the second plane portions (53) is larger than the inner diameter of the moving ring (70); the inner diameter of the ring formed by the plurality of the third plane portions (55) is larger than the inner diameter of the ring formed by the plurality of the second plane portions (53).

3. The valve compression device according to claim 2, characterized in that: A first limiting plate (56) is provided at the end of the first plane portion (51) away from the first slope portion (52), and a second limiting plate (57) is provided at the connecting section between the second plane portion (53) and the second slope portion (54); the dimension of the first limiting plate (56) in the radial direction of the connecting pipe (20) is greater than the radial dimension of the movable ring (70).

4. The valve compression device according to claim 2, characterized in that: There are three groups of elastic support components (60), the first group of elastic support components (60) is located between the first plane portion (51) and the connecting tube (20), the second group of elastic support components (60) is located between the second plane portion (53) and the connecting tube (20), and the third group of elastic support components (60) is located between the third plane portion (55) and the funnel tube (30); The elastic support assembly (60) comprises a support spring (61) and a telescopic rod (62); the support spring (61) is sleeved on the outside of the telescopic rod (62); The funnel tube (30) is also provided with a plurality of limit blocks (32); the limit blocks (32) correspond to the operation ports (31) one by one, and the limit blocks (32) extend from the surface of the funnel tube (30) to the operation port (31); the third plane portion (55) is also provided with a limit rod (42) on the side facing the funnel tube (30); the limit rod (42) is connected to a connecting plate (43); when the third plane plate moves toward the funnel tube (30) to a position, the connecting plate (43) abuts against the surface of the limit block (32) so as to suppress the compression arc plate (40) from moving toward the axis of the funnel tube (30).

5. The valve compression device according to claim 1, characterized in that: The outer side of the compression shell (10) is connected to a handle (11); a transmission assembly (80) for driving the moving ring (70) to move is arranged inside the handle (11); a rotating hand wheel (12) is arranged on the handle (11), and the rotating hand wheel (12) is connected to the transmission assembly (80).

6. The valve compression device according to claim 5, characterized in that: The transmission assembly (80) comprises a first equi-diameter bevel gear (81), a second equi-diameter bevel gear (82), a third equi-diameter bevel gear (83), a fourth equi-diameter bevel gear (84) and a rotating rod (85); an operating chamber (14) is provided inside the handle (11); a handwheel rod (13) is connected to the axis of the rotating handwheel (12); the handwheel rod (13) is rotatably connected to the handle (11), and the end of the handwheel rod (13) away from the rotating handwheel (12) extends into the operating chamber (14); the handwheel rod (13) extends into the operating chamber (14) The end of the rotating rod (85) is sleeved with a fourth equal-diameter bevel gear (84); the rotating rod (85) is rotatably connected in the handle (11), one end of the rotating rod (85) is located in the operating chamber (14), and the other end is located inside the compression shell (10); the end of the rotating rod (85) located in the operating chamber (14) is provided with a third equal-diameter bevel gear (83), and the end located inside the compression shell (10) is provided with a second equal-diameter bevel gear (82); the third equal-diameter bevel gear (83) is meshed with the fourth equal-diameter bevel gear (84); A pulling block (86) is also provided in the compression shell (10), one side of the pulling block (86) is provided with a slot, a ball screw (87) is rotatably connected in the pulling block (86), a connecting arm (71) is connected to the outer periphery of the movable ring (70), and the connecting arm (71) is connected to the movable part of the ball screw (87); the end of the ball screw (87) extending out of the pulling block (86) is connected to a first equal-diameter bevel gear (81); the first equal-diameter bevel gear (81) is meshed with a second equal-diameter bevel gear (82).

7. The valve compression device according to claim 1, characterized in that: The inner wall of the movable ring (70) is provided with a plurality of rotation grooves; a plurality of pressure rollers (72) are rotatably connected in the rotation grooves.

8. The valve compression device according to claim 1, characterized in that: The distance between the two placement openings (101) is greater than the sum of the axial dimensions of the connecting tube (20) and the funnel tube (30); a conduction assembly (90) is connected to the placement opening (101) near the funnel tube (30); the conduction assembly (90) comprises a conduction tube (91) and a conduction guide rod (92); the conduction tube (91) is coaxially sleeved in the placement opening (101) and is capable of axial translation along the placement opening (101); the inner diameter of the conduction tube (91) is equal to the inner diameter of the funnel tube (30); ); the conducting guide rod (92) passes through the compression shell (10) and can move back and forth along the compression shell (10); one end of the conducting guide rod (92) is connected to the end of the conducting tube (91) extending out of the compression shell (10), and the other end is directly opposite to a limiting structure in the compression shell (10); when the end of the conducting guide rod (92) located in the compression shell (10) abuts against the limiting structure, the pipe mouth of the conducting tube (91) abuts against the large-diameter pipe mouth of the funnel tube (30).

9. The valve compression device according to claim 8, characterized in that: The end of the conduction guide rod (92) located in the compression shell (10) is provided with a return spring (93) and a pressure plate (94); the pressure plate (94) is connected to the end of the conduction guide rod (92) extending into the compression shell (10); the return spring (93) is sleeved on the outer side of the conduction guide rod (92), with one end connected to the inner wall of the compression shell (10) and the other end connected to the pressure plate (94).

10. The valve compression device according to claim 8, characterized in that: The compression shell (10) is provided with a plurality of limit assemblies surrounding the outside of the conducting tube (91), the limit assemblies comprising a fixed rod (95) and a rotating block (96); the rotating block (96) is rotatably connected to the end of the fixed rod (95); the end surface of the conducting tube (91) located outside the compression shell (10) is provided with a flange extending outward; when the conducting tube (91) abuts against the funnel tube (30), the rotating block (96) can rotate to the outside of the flange end surface.

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