Pressing and holding device for compressing interventional instrument and loading method of interventional instrument

Abstract

The invention discloses a pressing and holding device for compressing an interventional instrument and a loading method of the interventional instrument. The pressing and holding device comprises a shell, a pressing device and a loading device, wherein the shell is provided with a through instrument channel; the multiple force application blocks are movably installed in the shell, all the force application blocks are distributed around the instrument channel, the multiple force application blocks have an opposite gathering state and a separation state, and the instrument channel is correspondingly retracted and released in the state switching process; and the gear ring is in running fit with the shell, and the gear ring synchronously drives the multiple force application blocks to switch states.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a crimping device for a compression interventional device. Background Art

[0002] In order to facilitate delivery within the body, interventional devices need to be radially compressed using a crimper before surgery to obtain a smaller radial size. After compression, they are loaded into the delivery system and delivered to the treatment site in the body in a compressed state. Finally, they are expanded to the functional size at the desired location.

[0003] The crimping device in the prior art includes multiple force-applying components acting on the interventional instrument. The relative movement of each force-applying component can radially compress the interventional instrument. For example, a crimping device disclosed in the prior art is equipped with multiple sliders serving as force-applying components. However, due to structural limitations, the shapes of each slider are different, resulting in cumbersome alignment and low efficiency during assembly. Summary of the invention

[0004] In order to solve the above technical problems, the present application discloses a crimping device for compressing an interventional instrument, comprising:

[0005] A housing having an instrument channel extending therethrough;

[0006] A force-applying block, wherein the force-applying blocks are in a plurality and are movably mounted in the housing, the force-applying blocks are distributed around the instrument channel, the plurality of force-applying blocks have a relatively gathered state and a separated state, and the instrument channel is correspondingly retracted and released during the switching process;

[0007] A gear ring is rotatably matched with the housing, and the gear ring synchronously drives a plurality of force applying blocks to switch states.

[0008] Several optional methods are provided below, but they are not intended to be additional limitations on the above overall solution, but are merely further supplements or preferences. Under the premise that there is no technical or logical contradiction, each optional method can be combined with the above overall solution alone, or multiple optional methods can be combined. Optionally, the gear ring uses a meshing transmission method to synchronously drive multiple force blocks to switch between a gathered state and a separated state.

[0009] Optionally, the crimping device further comprises a transmission mechanism, and the transmission mechanism is transmission-connected between the gear ring and each force-applying block.

[0010] Optionally, the transmission mechanism includes:

[0011] A rack, arranged on each force applying block;

[0012] The transmission gear is rotatably mounted in the housing, and each rack is meshed with the gear ring through one or more transmission gears.

[0013] Optionally, the rotation axis of the gear ring and the extension direction of the instrument channel are parallel to each other.

[0014] Optionally, the rotation axis of the transmission gear and the rotation axis of the ring gear are parallel to each other.

[0015] Optionally, the gear ring includes an annular portion, and driving teeth distributed on the annular portion and drivingly matched with the force applying block, and the driving teeth are arranged in at least one of the following ways:

[0016] The driving teeth are internal teeth distributed on the inner edge of the annular portion;

[0017] The driving teeth are external teeth distributed on the outer edge of the annular portion;

[0018] The driving teeth are side teeth distributed on the axial end surface of the annular portion.

[0019] Optionally, the number of the driving teeth is an integer multiple of the number of the force applying blocks.

[0020] Optionally, the number of the driving teeth is 8 times the number of the force applying blocks.

[0021] Optionally, the annular portion is provided with a plurality of weight-reducing grooves along the circumference of the gear ring.

[0022] Optionally, the gear ring surrounds the periphery of multiple force blocks.

[0023] Optionally, along the extension direction of the instrument channel, the rack and the gear ring are staggered.

[0024] Optionally, the number of racks fixed on the same force applying block is two and they are arranged side by side, and along the extension direction of the instrument channel, each rack is located on both sides of the gear ring.

[0025] Optionally, the transmission gear adopts 1 to 3-stage gear transmission, in which the first stage is meshed with the ring gear and the last stage is meshed with the rack in accordance with the transmission sequence.

[0026] Optionally, the transmission gear includes multiple sets, and each set corresponds to a force application block.

[0027] Optionally, each set of transmission gears includes a first gear and a second gear coaxially fixed to the first gear, the first gear is meshed with the ring gear, and the second gear is meshed with a rack on a corresponding force block.

[0028] Optionally, on the same force applying block, a second gear is respectively configured for each rack, or all racks are configured with the same second gear.

[0029] Optionally, the pitch circle diameter of the first gear is D1, the pitch circle diameter of the second gear is D2, and D1:D2=1:(0.3-0.7) is satisfied.

[0030] Optionally, the axial length of the first gear is L1, and the axial length of the second gear is L2, and they satisfy L1:L2=(3-6):1.

[0031] Optionally, the transmission ratio range between the first gear and the ring gear is 1:(5-15);

[0032] The transmission ratio range between the second gear and the ring gear is 1:(5-15).

[0033] Optionally, the transmission ratio between the first gear and the ring gear is 1:9.6;

[0034] The transmission ratio between the second gear and the ring gear is 1:9.6.

[0035] Optionally, the transmission ratio between the first gear and the ring gear is 3:26;

[0036] The transmission ratio between the second gear and the ring gear is 3:26.

[0037] Optionally, the rack and the force applying block are arranged integrally or separately.

[0038] Optionally, the interventional device is an artificial heart valve.

[0039] Optionally, the crimping device further includes a driving mechanism for driving the gear ring to rotate.

[0040] Optionally, the driving mechanism includes at least one of the following methods:

[0041] Mode A, the driving mechanism is a driving handle connected to the gear ring indirectly or directly;

[0042] Mode B, the driving mechanism is an electric component that is transmission-connected to the ring gear.

[0043] Optionally, the electric component is mounted on the housing to drive the ring gear to rotate relative to the housing.

[0044] Optionally, the electric component is a motor.

[0045] Optionally, the shell is provided with an operation window, and at least a portion of the gear ring is exposed to the operation window, and the portion is connected to the driving handle.

[0046] Optionally, at least a portion of the gear ring is a connecting portion exposed to the operating window, and the driving handle is detachably fixed to the connecting portion.

[0047] Optionally, the center angle corresponding to the stroke of the driving handle is 30 degrees to 120 degrees.

[0048] Optionally, the center angle corresponding to the stroke of the driving handle is 30 degrees to 60 degrees.

[0049] Optionally, the center angle corresponding to the stroke of the driving handle is 40 degrees.

[0050] Optionally, the driving handle includes a gripping portion and a clamping portion, and the gear ring is provided with a clamping groove that matches the clamping portion.

[0051] Optionally, the driving handle is in a rod-shaped structure, one end of the driving handle is connected to the gear ring, and the other end extends in a direction away from the instrument channel.

[0052] Optionally, when the force applying blocks are switched from a gathered state to a separated state, two adjacent force applying blocks always abut against each other along the circumference of the instrument channel.

[0053] Optionally, one end of the force applying block facing the instrument channel has a bent portion;

[0054] Along the circumference of the instrument channel, the bending portion has a first edge surface located on the outside and a second edge surface located on the inside;

[0055] The inner wall of the instrument channel is surrounded by the intersection of the first edge surface and the second edge surface of each force application block.

[0056] Optionally, along the circumference of the instrument channel, of two adjacent force-applying blocks, a first edge surface of one force-applying block fits with a second edge surface of the other force-applying block.

[0057] Optionally, along the circumference of the instrument channel, in two adjacent force-applying blocks, the second edge surface shielding plate divides the first edge surface, and a portion of the first edge surface exposed to the instrument channel is an active surface;

[0058] When the force applying block switches from the gathered state to the separated state, the length of the action surface along the circumferential direction of the instrument channel gradually increases.

[0059] Optionally, the first edge surface and the second edge surface are both connected to other adjacent parts of the force applying block through an arc-shaped transition surface.

[0060] Optionally, for the same force-applying block, an included angle between the first edge surface and the second edge surface along the circumference of the instrument channel is 30 degrees.

[0061] Optionally, for the same force-applying block, the angle between the movement direction of the force-applying block and the second edge is 105 degrees, and the angle between the movement direction of the force-applying block and the first edge is 75 degrees.

[0062] Optionally, along the circumference of the instrument channel, the angle between the movement directions of two adjacent force blocks is 30 degrees.

[0063] Optionally, the shell is in the shape of a hollow disc, the instrument channel passes through the axial portion of the disc, the interior of the shell is an installation chamber, and the gear ring and the force block are both located in the installation chamber.

[0064] The present application also provides a method for loading an interventional device, comprising:

[0065] Providing the crimping device described in the above embodiments;

[0066] placing an interventional instrument in the instrument channel;

[0067] The gear ring is rotated, and the gear ring drives a plurality of force applying blocks to move synchronously to compress the interventional instrument;

[0068] The compressed interventional device is transferred into a tube for loading the interventional device.

[0069] Optionally, the tube is pre-positioned and aligned with the instrument channel.

[0070] Optionally, when compressing the interventional device, a step-by-step compression method is adopted according to the radial dimensions of different positions of the interventional device.

[0071] Optionally, the interventional instrument includes a first section and a second section along its axial direction, and a radial dimension of the first section is greater than a radial dimension of the second section;

[0072] The step-by-step compression method includes:

[0073] Inserting a core rod into the interventional instrument to compress the radial dimension of the first section to be substantially equal to the radial dimension of the second section;

[0074] The first section and the second section are then compressed synchronously until the core rod is fitted together.

[0075] Optionally, a first tube of a conveying system is passed through the interventional instrument, the interventional instrument is compressed until it fits with the first tube, and the compressed interventional instrument is pushed into a second tube of the conveying system.

[0076] The crimping device disclosed in the present application drives the force block to move through the gear ring, thereby reducing the number of parts of the crimping device, better controlling the mold opening cost and part size, and achieving the effect of simple assembly without complicated fixed assembly forms.

[0077] The present application also provides a crimping device for compressing an interventional instrument, comprising:

[0078] A shell, wherein the shell is hollow and has an instrument channel therethrough;

[0079] A plurality of force blocks are provided, each of which is movably mounted in the shell and distributed around the instrument channel. The plurality of force blocks can be relatively gathered and separated, and the instrument channel can be retracted and released accordingly. At least one of the force blocks is provided with an indication mark, and the shell is provided with a window corresponding to the position of the indication mark.

[0080] The structural features and driving methods of the multiple force blocks in this solution can adopt conventional technologies or be combined with other embodiments of the present application, such as using a corresponding gear ring to configure a driving mechanism to synchronously drive the multiple force blocks.

[0081] Optionally, the indicator mark and the force applying block are an integral structure or are fixed separately, and along the axial direction of the shell (i.e. the extension direction of the instrument channel), the indicator mark is located on one side of the force applying block.

[0082] Optionally, the split fixing method is plugging and / or bonding.

[0083] Optionally, one of the indicator mark and the force applying block is provided with a plug-in portion, and the other is provided with a slot matching with the plug-in portion.

[0084] Optionally, the window is in a bar shape and extends along the movement direction of the force block where the indicator mark is located.

[0085] Optionally, the movement direction of the force applying block with the indicator mark is parallel to the bottom surface of the crimping device.

[0086] Optionally, the window is hollowed out in the shell, and a transparent cover is provided at the hollowed-out portion.

[0087] Optionally, the transparent cover is buckled into the hollow portion of the shell.

[0088] Optionally, an end portion of the indicator mark extends out of the window to form an indicating portion, and a width of the indicating portion is greater than a width of the window.

[0089] Optionally, the housing has a recessed area surrounding the viewing window, and the indicator is placed in the recessed area;

[0090] The transparent cover is buckled in the recessed area and has the same height as the peripheral part of the shell.

[0091] Optionally, there are at least two indicating marks, and along the axial direction of the shell, at least two indicating marks are respectively located at two opposite sides of the shell.

[0092] Optionally, there are two indicating marks, which are fixed to the same force applying block.

[0093] Optionally, the indicator has a color different from that of the shell.

[0094] Optionally, the housing and / or the transparent cover is provided with a reference scale corresponding to the displacement of the indicator mark.

[0095] The present application also provides a crimping device for compressing an interventional instrument, comprising:

[0096] A shell, wherein the shell is hollow and has an instrument channel therethrough;

[0097] A plurality of force applying blocks, each of which is movably mounted in the housing and distributed around the instrument channel, and the plurality of force applying blocks can be relatively gathered and separated, and the instrument channel can be retracted and released accordingly;

[0098] A gear ring, which is rotatably mounted in the housing and is located at the periphery of the instrument channel, and is transmission-connected to each of the force-applying blocks and synchronously drives the multiple force-applying blocks;

[0099] A driving shaft, at least a portion of which is located in the housing and linked to the gear ring, and at least a portion of which is used to connect to a power source.

[0100] Optionally, the rotation axis of the drive shaft is parallel to the rotation axis of the ring gear.

[0101] Optionally, the power source is a knob and / or a motor;

[0102] At least a portion of the knob is exposed to the housing, and the knob and the drive shaft are an integral or separate structure;

[0103] The motor is located inside the housing.

[0104] Optionally, along the extension direction of the instrument channel, the crimping gripper has a relative front and back side, the knob is located on the front side of the shell, and a bracket is also installed on the front side of the shell.

[0105] Optionally, at least a portion of the knob is located outside the shell, and an elastic gasket is pressed between the portion and the outer wall of the shell.

[0106] Optionally, the elastic gasket is annular, and is sleeved on the knob, with one axial side of the elastic gasket abutting against the shell, and the other axial side abutting against the knob.

[0107] Optionally, the outer wall of the shell has a recessed area corresponding to the position of the knob, and the elastic gasket is placed in the recessed area.

[0108] Optionally, along the radial direction of the ring gear, the drive shaft is located outside the ring gear.

[0109] Optionally, the drive shaft and the ring gear are directly driven or driven through a linkage assembly;

[0110] The linkage assembly is driven by a gear set or a worm gear.

[0111] Optionally, the gear set includes a plurality of meshing gears, and a rotation axis of each gear is parallel to the drive shaft.

[0112] Optionally, the number of the gears is 2 to 5.

[0113] Optionally, the gear set includes:

[0114] A third gear, the third gear is fixedly arranged coaxially with the driving shaft;

[0115] A fourth gear is rotatably matched with the housing, and the fourth gear is meshed and transmitted between the third gear and the gear ring.

[0116] Optionally, the gear ring includes an annular portion, and driving teeth that mesh with the linkage assembly are distributed on the outer periphery of the annular portion.

[0117] Optionally, the third gear and the fourth gear are both located in the housing, and along the radial direction of the gear ring, the third gear and the fourth gear are both located outside the gear ring.

[0118] Optionally, the fourth gear includes at least a first unit tooth and a second unit tooth that are coaxially arranged and mesh with the third gear and the driving tooth respectively;

[0119] The tooth thickness ratio of the first unit tooth to the second unit tooth is 1:0.7-1.5.

[0120] Optionally, along the axial direction of the gear ring, the outer periphery of the gear ring is partially offset to form an offset area, and the driving tooth is located in the offset area;

[0121] The gear ring forms an escape zone on the front side of the offset zone, and the escape zone accommodates the first unit tooth or the second unit tooth.

[0122] The present application also provides a crimping device for compressing an interventional instrument, comprising:

[0123] A shell, wherein the shell is hollow and has an instrument channel therethrough;

[0124] A plurality of force applying blocks, each of which is movably mounted in the housing and distributed around the instrument channel, and the plurality of force applying blocks can be relatively gathered and separated, and the instrument channel can be retracted and released accordingly;

[0125] A gear ring, the gear ring is rotatably mounted in the housing and is located at the periphery of the instrument channel, the gear ring is drivingly connected to each of the force applying blocks, and synchronously drives multiple force applying blocks, the gear ring is provided with multiple limiting structures, and the multiple limiting structures are at different circumferential positions of the gear ring;

[0126] The shift member is movably installed relative to the shell, and the shift member has a plurality of working positions. In each working position, the shift member cooperates with a corresponding limiting structure to limit the rotation of the gear ring.

[0127] Optionally, each limiting structure is at a different radial position on the gear ring; the shift member moves along the radial direction of the gear ring to a corresponding working position.

[0128] Optionally, the limiting structure is a limiting step arranged on the gear ring, and the shift member is limited against the corresponding limiting step along the circumference of the gear ring in the working position.

[0129] Optionally, the crimping device further comprises a driving mechanism for driving the shift member, and the driving mechanism comprises:

[0130] An operating button, the operating button being rotatably mounted on the housing;

[0131] A transmission member, the transmission member is linked with the operating button and can drive the shift member to switch between various working positions;

[0132] An elastic member acts on the shift member to keep the shift member in a working position.

[0133] Optionally, the transmission member is a cam, and the rotation axis of the cam is perpendicular to the movement direction of the shift member.

[0134] Optionally, the operating button is located on the front side of the shell, and is arranged on both sides of the operating channel together with the window on the same side.

[0135] Optionally, the shift member at least includes a driving portion abutting against the outer peripheral side of the cam, a locking portion cooperating with the limiting structure, and a transmission portion connected to the elastic member;

[0136] Along the axial direction of the gear ring, the driving portion and the locking portion are located on two opposite sides of the shift member.

[0137] Optionally, the elastic member is a compression spring, and the elastic member is pressed between the transmission part and the inner wall of the housing, and applies force to the radial inner side of the shift member.

[0138] Optionally, the shift member is block-shaped and is located between the inner wall of the shell and the gear ring.

[0139] Optionally, the driving portion faces radially outward of the shift member;

[0140] The locking portion is arranged in a direction perpendicular to that of the shifting member.

[0141] Optionally, the shift member has a first groove structure and a second groove structure on two opposite sides along the axial direction of the gear ring, the first groove structure accommodates a partial structure of the gear ring, the second groove structure accommodates the cam, and one of the inner walls of the second groove structure is the driving part.

[0142] Optionally, the radial inner side of the shift member has a third groove structure, and the bottom wall of the third groove structure is the transmission part;

[0143] The shifting member also has a column fixed in the third slot structure, and the end of the elastic member is sleeved on the outer side of the column.

[0144] Optionally, the shift member has a top surface and a bottom surface opposite to each other, and the locking portion is located on the top surface of the shift member and between the first slot structure and the third slot structure.

[0145] Optionally, the operating button and the cam are driven by a plurality of mutually meshing transmission gears, and the rotation axis of the operating button, the rotation axis of the cam and the rotation axes of the transmission gears are parallel;

[0146] According to the transmission sequence, the first transmission gear is coaxially arranged with the operating button, and the last transmission gear is coaxially arranged with the cam.

[0147] Optionally, along the circumference of the instrument channel, the stopper is located between two adjacent force-applying blocks, and the movement path of the stopper avoids each force-applying block.

[0148] Optionally, the crimping device further comprises a locking member for locking the shift member in a corresponding working position, wherein the locking member directly or indirectly interferes with at least one of the following moving parts:

[0149] The gear member;

[0150] The operating button;

[0151] the cam;

[0152] The transmission gear.

[0153] Optionally, the inner wall of the shell has a plurality of slots that cooperate with the locking member, and the plurality of slots are arranged in sequence along the rotation or movement direction of the moving component.

[0154] Optionally, the locking member includes:

[0155] A locking tongue, the locking tongue being matched with the card slot;

[0156] A connecting arm is connected between the locking tongue and the moving component and is capable of deformation.

[0157] Optionally, the connecting arm extends in an arc-shaped direction, two ends of the connecting arm are respectively connected to the moving component, and the locking tongue is located at the top of the arc of the connecting arm.

[0158] Optionally, the crimping device further includes a spring sheet mounted on the housing;

[0159] The gear ring is provided with a plurality of latching teeth matched with the spring sheet along its circumference, and the spring sheet can pass over the latching teeth and vibrate or make a sound.

[0160] The specific beneficial technical effects will be further explained in the specific implementation methods in combination with specific structures or steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0161] Figure 1 A schematic diagram of the structure of a crimping device in an embodiment provided in the present application;

[0162] Figure 2 for Figure 1 A schematic diagram of the structure of the mid-pressure gripper from another perspective;

[0163] Figure 3 for Figure 1 Schematic diagram of the exploded structure of the medium pressure gripper;

[0164] Figure 4 for Figure 1 Schematic diagram of partial exploded structure of the medium pressure gripper;

[0165] Figure 5 for Figure 4 The structural schematic diagram in which the transparent cover is omitted;

[0166] Figure 6 for Figure 3 A schematic diagram of the structure of the indicator mark and the force-applying block;

[0167] Figure 7 for Figure 6 A schematic diagram of the exploded structure of the indicator mark and the force-applying block;

[0168] Figure 8 for Figure 1 A schematic diagram of the structure of the middle crimping gripper with part of the housing omitted;

[0169] Fig. 9 for Figure 8A schematic diagram of the structure of the middle part of the shell;

[0170] Fig.10 for Fig. 9 A partial cross-sectional view of the middle shell;

[0171] Fig.11 for Figure 8 Schematic diagram of the structure of the middle force block and the gear ring;

[0172] Fig.12 for Figure 8 Schematic diagram of the structure of the middle force block and the gear ring;

[0173] Fig.13 for Fig.11 Schematic diagram of the structure of the middle gear ring;

[0174] Fig.14 for Fig.11 Structural diagram of the middle force block and the transmission mechanism;

[0175] Fig.15 for Fig.14 The structural diagram of the transmission mechanism;

[0176] Fig.16 for Fig.15 Schematic diagram of the exploded structure of the transmission mechanism;

[0177] Fig.17 for Figure 1 Schematic diagram of part of the structure of the middle pressure gripper;

[0178] Fig.18 for Fig.17 Schematic diagram of the exploded structure of the middle knob and shaft;

[0179] Fig.19 A schematic diagram of the structure of a crimping device in an embodiment provided in the present application;

[0180] Fig. 20 for Fig.19 A schematic diagram of the partial structure of the mid-range position member and the housing;

[0181] Fig.21 for Fig. 20 A schematic diagram of the structure of the middle shell;

[0182] Fig. 22 It is a schematic diagram of the structure of the gear member and the gear ring;

[0183] Fig.23 A schematic structural diagram of the shift member and the gear ring from another perspective;

[0184] Fig.24 for Fig. 20 A schematic diagram of the structure of the mid-range position component;

[0185] Fig.25 for Fig. 22 A schematic diagram of the structure of the first transmission gear;

[0186] Fig.26 for Fig. 22 A schematic diagram of the structure of the second transmission gear;

[0187] Fig. 27 for Fig.19 Schematic diagram of the exploded structure of the middle pressure gripper and bracket;

[0188] Fig.28 for Fig. 27 Schematic diagram of the exploded structure of the middle pressure gripper and bracket;

[0189] Fig.29 for Fig. 27 Schematic diagram of the exploded structure of the middle bracket;

[0190] Fig.30 for Fig.29 A schematic diagram of the structure of the first half of the middle bracket;

[0191] Fig.31 for Fig.29 A schematic diagram of the structure of the second half of the middle bracket;

[0192] Fig.32 It is a schematic diagram of the exploded structure of the shell and the base in the crimping device;

[0193] Fig.33 for Fig.32 Schematic diagram of the structure of the middle base;

[0194] Fig.34 A schematic diagram of the structure of an interventional device in an embodiment provided in this application;

[0195] Fig.35 for Fig.34 Schematic diagram of the structure of the interventional device after compression;

[0196] Fig.36 A schematic diagram of the structure of a crimping device in an embodiment provided in the present application;

[0197] Fig.37 A schematic diagram of the structure of a crimping device in an embodiment provided in the present application;

[0198] Fig.38 for Fig.36 A schematic diagram of the structure of the middle crimping gripper with part of the housing omitted;

[0199] Fig.39 for Fig.36 A schematic diagram of the structure of the middle crimping gripper with part of the housing omitted;

[0200] Fig.40 for Fig.36 Schematic diagram of the exploded structure of the medium pressure gripper;

[0201] Fig.41 for Fig.38 Structural schematic diagram of the middle gear ring and the force block;

[0202] Fig.42 for Fig.38 Structural schematic diagram of the middle gear ring and the force block;

[0203] Fig.43 for Fig.41 Schematic diagram of the structure of the middle gear ring;

[0204] Fig.44 for Fig.41 The structural diagram of the transmission mechanism;

[0205] Fig.45 for Fig.42 The structural diagram of the transmission mechanism;

[0206] Fig.46 for Fig.41 Structural schematic diagram of the middle force applying block;

[0207] Fig.47 It is a schematic diagram of the connection structure between the driving handle and the housing;

[0208] Fig.48 for Fig.47 A schematic diagram of the exploded structure of the middle driving handle and the housing;

[0209] Fig.49 for Fig.36 Schematic diagram of the exploded structure of the middle shell;

[0210] Fig.50 for Fig.49 A schematic diagram of a portion of the structure of the middle shell;

[0211] Fig.51 for Fig.49 The structural diagram of the main body;

[0212] Fig.52 is a schematic diagram of the structure of the crimping device;

[0213] Fig.53 is a schematic diagram of the structure of the crimping device;

[0214] Fig.54 for Fig.53 Schematic diagram of the exploded structure of the medium pressure gripper;

[0215] Fig.55 A flowchart of a method for loading an interventional device according to an embodiment of the present application;

[0216] Fig.56is a schematic diagram of the structure of the interventional device;

[0217] Fig.57 is a schematic diagram of the structure of the interventional device;

[0218] Fig.58 Schematic diagram of the structure of loading interventional instruments into the delivery system.

[0219] The reference numerals in the figures are described as follows:

[0220] 100, crimping device; 101, front side; 102, back side;

[0221] 10. Shell; 11. Instrument channel; 12. First half shell; 121. Second half shell; 122. Decorative plate; 123. Concave area; 13. Window; 14. Viewing window; 141. Transparent cover; 142. First clamping block; 143. First clamping slot; 144. Concave area; 15. Mounting column; 151. Axial hole; 152. Inner cylinder; 153. Outer cylinder; 154. Closing plate; 16. Fixed column; 17. Mounting area; 18. Fixed part; 181. Clamping tongue; 182. Cantilever; 19. Guide groove; 191. Expanding; 192. Guide plate; 193. Make way area; 194. Guide groove;

[0222] 20, force applying block; 21, slot; 22, bending portion; 221, first edge surface; 222, second edge surface; 223, arc-shaped transition surface;

[0223] 30. Indicator mark; 31. Connecting part; 32. Indicator part;

[0224] 40. gear ring; 41. annular portion; 411. driving tooth; 42. internal tooth; 43. transmission mechanism; 431. rack; 432. transmission gear; 433. fifth gear; 434. sixth gear; 435. rotating shaft; 436. second clamping block; 437. second clamping groove; 438. through hole; 44. clamping tooth; 441. first guide tooth surface; 442. second guide tooth surface; 45. limiting structure; 451. limiting step; 452. transition surface; 46. offset area; 47. avoidance area;

[0225] 50. driving shaft; 51. power source; 52. knob; 521. matching groove; 522. housing; 523. connecting piece; 524. third clamping block; 525. third clamping groove; 526. depression; 53. linkage assembly; 531. third gear; 532. fourth gear; 533. first unit gear; 534. second unit gear; 535. axle; 536. axle; 54. first alignment mark;

[0226] 60. gear member; 61. driving mechanism; 611. operating button; 612. cam; 613. elastic member; 62. transmission gear; 621. first transmission gear; 622. second transmission gear; 63. locking member; 631. locking tongue; 632. locking groove; 633. connecting arm; 64. second alignment mark; 65. driving part; 651. locking part; 652. transmission part; 653. first groove structure; 654. second groove structure; 655. third groove structure; 656. column;

[0227] 70. shrapnel; 71. connecting portion; 72. triggering portion;

[0228] 80, bracket; 81, first half cylinder; 811, second half cylinder; 812, bearing bracket; 813, rotating groove; 814, limiting tooth; 815, fixed shaft; 816, engaging block; 817, operating ear; 818, guide surface; 819, locking surface; 82, elastic pad; 83, fitting part; 831, engaging block; 832, engaging groove; 84, transition section;

[0229] 90, base; 91, boss; 911, mounting groove; 912, locking groove; 92, positioning assembly; 921, foolproof convex ridge; 922, foolproof groove; 923, flaring;

[0230] 200. Interventional devices; 201. Stents;

[0231] 9100, crimping device; 9101, instrument channel; 9103, delivery system; 9104, first pipe fitting; 9105, second pipe fitting; 9106, guide head; 9107, installation head;

[0232] 910, housing; 911, operating window; 912, installation chamber; 913, guide unit; 9131, guide plate; 9132, guide groove; 9133, avoidance area; 914, window; 915, body; 916, cover plate;

[0233] 920, force applying block; 921, bending portion; 9211, first edge surface; 9212, second edge surface; 9213, arc-shaped transition surface;

[0234] 930, gear ring; 931, annular portion; 932, driving tooth; 933, weight-reducing groove; 934, connecting portion; 935, slot;

[0235] 940, transmission mechanism; 941, rack; 942, transmission gear; 9421, first gear; 9422, second gear;

[0236] 950, driving mechanism; 951, driving handle; 9511, gripping portion; 9512, clamping portion; 952, shielding plate;

[0237] 960, base; 961, snap-fit ​​structure; 9611, snap tongue; 9612, snap slot; 962, mounting slot;

[0238] 970, limiting component; 971, fixing part; 972, adjusting part; 9721, supporting groove; 973, locking mechanism; 9731, stud; 9732, operating part; 9733, threaded hole;

[0239] 980, bracket; 981, bearing bracket; 9811, block; 982, elastic pad; 9821, groove; 983, support part; 984, supporting part; 985, magnetic attraction part; 986, matching part; 987, fitting part; 988, flaring section; 989, semi-cylinder structure;

[0240] 990. interventional device; 991. stent; 992. connecting ear; 993. first section; 994. second section. DETAILED DESCRIPTION

[0241] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0242] It should be noted that when a component is referred to as being "connected" to another component, it may be directly connected to the other component or there may be a central component. When a component is referred to as being "disposed on" another component, it may be directly disposed on the other component or there may be a central component at the same time.

[0243] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0244] In this application, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number or order of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0245] refer to Figures 1 to 3 As shown, the present application provides a crimping device 100 for compressing an interventional instrument 200, comprising:

[0246] The housing 10 is hollow and has an instrument channel 11 therethrough;

[0247] A plurality of force applying blocks 20 are movably installed in the housing 10 and distributed around the instrument channel 11 . The plurality of force applying blocks 20 can be relatively gathered and separated, and the instrument channel 11 can be retracted and released accordingly.

[0248] In order to facilitate in vivo delivery, the interventional device 200 needs to be radially compressed using a crimper 100 before surgery to obtain a smaller radial size. After compression, it is loaded into the delivery system and delivered to the treatment site in the body in a compressed state. Finally, it is expanded to a functional size at the desired position.

[0249] When the interventional instrument 200 does not enter the instrument channel 11, the multiple force blocks 20 are in a relatively separated state. After the interventional instrument 200 enters the instrument channel 11, the multiple force blocks 20 gradually switch from separation to gathering. During this process, the multiple force blocks 20 will shrink the instrument channel 11, and the inner wall of the instrument channel 11 will squeeze the interventional instrument 200, and the inner wall of the instrument channel 11 will evenly reduce the size of the interventional instrument 200.

[0250] The shapes of the force applying blocks 20 are the same; during the installation of the force applying blocks 20 , there is no need to identify the type of the force applying blocks 20 , which simplifies the assembly method of the force applying blocks 20 .

[0251] The crimping device 100 has a front surface 101 and a back surface 102 opposite to each other; the crimping device 100 has a bottom surface (eg, Figure 2 A in ), and the top surface opposite to the bottom surface (e.g. Figure 2 B) wherein both ends of the instrument channel 11 are open to the front side 101 and the back side 102 of the crimping device 100 respectively.

[0252] The interior of the housing 10 forms an installation chamber, and each force-applying block 20 is movably arranged in the installation chamber. The shape of the housing 10 is not strictly limited. For example, the housing 10 in the figure is roughly cylindrical. In order to facilitate the assembly of other components, a split structure can be adopted, that is, the housing 10 includes two half shells that are interlocked. Of course, in order to facilitate local maintenance or operation, it can also be divided into more parts. In order to facilitate the mutual fixation between the two half shells, various methods such as buckles and screws can be adopted.

[0253] The housing 10 has an axial direction in space, and two ends of the housing 10 along the axial direction respectively correspond to the front side 101 and the back side 102 of the crimping device 100 . The instrument channel 11 extends along the axial direction of the housing 10 .

[0254] Each half shell is provided with a window 13, each window 13 is connected to the installation chamber, and the two axial ends of the instrument channel 11 are respectively opened at the two windows 13. When each force block 20 is pressed and gripped on the interventional instrument 200, each force block 20 is exposed at the corresponding window 13.

[0255] The inner wall of the instrument channel 11 is formed by the cooperation of the force blocks 20. It should be explained that the gathering and separation of the multiple force blocks 20 is a relative concept; separation corresponds to: the force blocks 20 radially outward and have a tendency to move away from each other; when the multiple force blocks 20 are gathered, they will compress the interventional instrument 200.

[0256] The instrument channel 11 has a central axis that passes through the geometric center of the instrument channel 11 . When each force block 20 retracts and releases the instrument channel 11 , the position of the central axis of the instrument channel 11 will not change to avoid affecting the compression of the interventional instrument 200 .

[0257] For example, Fig.34 To Attachment Fig.35 In the figure, an interventional device 200 (for example, an artificial heart valve, only the stent part is shown) is taken as an example. The interventional device 200 includes a cylindrical stent 201. The stent 201 can generally be formed by cutting or weaving. In order to achieve radial deformability, it is mostly a grid structure. The stent 201 is provided with leaflets (generally two or three leaves, which cooperate with each other to control blood flow), and a coating attached to the inner wall or outer wall of the stent 201 can be provided as needed.

[0258] In this embodiment, if Figures 4 to 7 As shown, a crimping device 100 for indicating the compression degree of an interventional instrument 200 is provided, comprising:

[0259] The housing 10 is hollow and has an instrument channel 11 therethrough;

[0260] A plurality of force blocks 20, each of which is movably mounted in the housing 10 and distributed around the instrument channel 11. The plurality of force blocks 20 can be relatively gathered and separated, and the instrument channel 11 can be retracted and released accordingly;

[0261] At least one of the force applying blocks 20 is provided with an indication mark 30 , and the housing 10 is provided with a window 14 corresponding to the position of the indication mark 30 .

[0262] The indicator mark 30 can indicate the position of the force block 20; when the force block 20 moves, it will drive the indicator mark 30 to move; the position of the indicator mark 30 is observed through the window 14 to determine the movement position of the force block 20, so as to facilitate the determination of the scaling degree of the instrument channel 11.

[0263] There is no strict limitation on the specific shape of the indicator mark 30 (for example, the indicator mark 30 in the figure is a rod shape), which is at least convenient for the operator to observe. In different embodiments, the indicator mark 30 can be protruding from the outer surface of the force block 20; or the indicator mark 30 is a part of the force block 20, and only the color is different from the color of other parts of the force block 20.

[0264] Along the axial direction of the shell 10, the indicator mark 30 is located on one side of the force block 20, and the window 14 is located on the corresponding side of the shell 10, so as to shorten the distance between the window 14 and the indicator mark 30. The corresponding window 14 is strip-shaped and extends along the movement direction of the force block 20 where the indicator mark 30 is located.

[0265] In this embodiment, the indicator mark 30 and the force applying block 20 are fixed separately, and the separate fixing method is plugging and / or bonding. Of course, in other embodiments, the indicator mark 30 and the force applying block 20 can be an integrated structure.

[0266] When plugged in, one of the indicator mark 30 and the force block 20 is provided with a plug-in portion 31, and the other is provided with a slot 21 that matches the plug-in portion 31. For example, in the figure, the plug-in portion 31 is columnar and fixed to one end of the indicator mark 30 facing the force block 20, and the side wall of the force block 20 is provided with a slot 21 that is roughly consistent with the outline of the plug-in portion 31.

[0267] The movement direction of the force applying block 20 with the indicator mark 30 is parallel to the bottom surface of the crimping device 100. The bottom surface is generally horizontal during use. The horizontal movement of the indicator mark 30 is more conducive to eliminating visual errors than the oblique movement.

[0268] The window 14 is hollowed out in the housing 10, and a transparent cover 141 is buckled in the hollowed-out part. For example, the transparent cover 141 is provided with a first clamping block 142, and the housing 10 is provided with a first clamping groove 143 matched with the first clamping block 142. The transparent cover 141 can seal the window 14 without interfering with the observation of the indicator mark 30. The housing 10 has a recessed area 144 surrounding the window 14, and the indicator 32 is placed in the recessed area 144; the transparent cover 141 is buckled in the recessed area 144 and is at the same height as the peripheral part of the housing 10, that is, the outer side surfaces of the transparent cover 141 and the housing 10 are roughly flush.

[0269] The housing 10 and / or the transparent cover 141 may be provided with reference scales for obtaining the displacement of the indicator mark 30 . The reference scales are arranged in sequence along the movement direction of the indicator mark 30 and are adjacent to the indicator mark 30 for comparison.

[0270] The end of the indicator mark 30 extends out of the window 14 to form an indicator portion 32. The width of the indicator portion 32 is greater than the width of the window 14 (which can be understood as Figure 2In the height direction of the middle, it can take into account both anti-dropping and eye-catching, and the indicator part 32 and the shell 10 can be configured with different colors for easy distinction.

[0271] There can be multiple indicator marks 30, for example, two indicator marks 30 located at two opposite sides of the housing 10, so that the operator can observe the indicator marks 30 from different sides of the crimping device 100. The two indicator marks 30 can also be fixed to the same force block 20 to ensure accurate synchronization of the indication.

[0272] Each force applying block 20 can be driven in a variety of ways, and one embodiment provides an improved method, such as Figures 8 to 16 As shown, the crimping device 100 further includes a gear ring 40 , which is rotatably matched with the housing 10 , and the gear ring 40 synchronously drives the plurality of force applying blocks 20 .

[0273] The gear ring 40 is rotated to drive the plurality of force applying blocks 20 to move relatively apart or together. The synchronous movement can be understood as the force applying blocks 20 moving simultaneously and at the same speed.

[0274] By driving the force block 20 to move through the gear ring 40, the number of parts of the crimping device 100 is reduced, the mold opening cost and the size of the parts can be better controlled, and the assembly is simple without complicated fixed assembly forms.

[0275] The rotation axis of the gear ring 40 is parallel to the extension direction of the instrument channel 11; the rotation axis of the gear ring 40 is perpendicular to the movement direction of the force block 20. The gear ring 40 includes an annular portion 41 (such as a circular ring in the figure), and internal teeth 42 distributed on the inner edge of the annular portion 41 and in transmission cooperation with the force block 20. The gear ring 40 can synchronously drive multiple force blocks 20 by meshing transmission through the internal teeth 42, so as to improve the stability and accuracy of the gear ring 40 driving multiple force blocks 20. Accordingly, there is a certain space inside the annular portion 41, and the annular portion 41 surrounds the periphery of the multiple force blocks 20, so as to make the structure of the crimping grip 100 more compact and reduce the size of the crimping grip.

[0276] In this embodiment, the ring gear 40 is connected to each force block 20 through a transmission mechanism 43; the transmission mechanism 43 includes a rack 431 and a transmission gear 432, the rack 431 is arranged on each force block 20, and the transmission gear 432 is rotatably installed in the housing 10, and each rack 431 is meshed with the internal teeth 42 on the ring gear 40 through one or more transmission gears 432.

[0277] During the rotation of the ring gear 40, the transmission gear 432 will synchronously drive the racks 431 to move, so as to drive the force block 20 to move. The ring gear 40, the transmission gear 432 and the rack 431 are meshed with each other, so that the ring gear 40 can stably drive the force block 20 to move.

[0278] The ring gear 40 surrounds the periphery of the transmission gear 432; the rotation axis of the transmission gear 432 is parallel to the rotation axis of the ring gear 40; along the extension direction of the instrument channel 11, the rack 431 and the ring gear 40 are staggered to reduce interference and allow the rack 431 to have a larger stroke.

[0279] In this embodiment, the transmission gear 432 includes multiple sets, each set corresponds to a force block 20, and each set of transmission gears 432 adopts 1-3 gear transmission; wherein the first-stage transmission gear is meshed with the gear ring 40, and the final-stage transmission gear is meshed with the rack 431. The shapes of the transmission gears 432 are the same; during the installation of the transmission gears 432, there is no need to identify the type of the transmission gears 432, which simplifies the assembly method of the transmission gears 432.

[0280] Each set of transmission gears 432 includes a fifth gear 433 and a sixth gear 434 coaxially fixed to the fifth gear 433 . The fifth gear 433 meshes with the ring gear 40 , and the sixth gear 434 meshes with the rack 431 on the corresponding force applying block 20 .

[0281] When the force applying block 20 is in operation, the force applying block 20 avoids the fifth gear 433 and the sixth gear 434 .

[0282] The axial length of the fifth gear 433 is L1, and the axial length of the sixth gear 434 is L2, and they satisfy that L1:L2=(3~6):1; the pitch circle diameter of the fifth gear 433 is D1, and the pitch circle diameter of the sixth gear 434 is D2, and they satisfy that D1:D2=1:(0.3~0.7). Preferably, D1:D2=1:(0.4~0.6). In this embodiment, the racks 431 fixed on the same force block 20 are two racks arranged side by side, and along the extension direction of the instrument channel 11, each rack 431 is located on both sides of the gear ring 40. The transmission gear 432 drives the force block 20 to move by driving the two racks 431. The setting of the two racks 431 can increase the force points acting on the force block 20 along the extension direction of the instrument channel 11, so as to stabilize the operation of the force block 20. Among them, the slot 21 is located on one side of the rack 431.

[0283] On the same force applying block 20, a sixth gear 434 is respectively configured for each rack 431. Along the extension direction of the instrument channel 11, each set of transmission gears 432 includes two sixth gears 434, and the two sixth gears 434 are respectively located on both sides of the fifth gear 433. The sixth gears 434 are at least partially located on both sides of the gear ring 40, and the local positions are meshed with the corresponding racks 431.

[0284] The transmission gear 432 is rotatably matched with the housing 10 via a rotating shaft 435. The fifth gear 433 and each of the sixth gears 434 have a through hole 438 for the rotating shaft 435 to pass through.

[0285] The sixth gear 434 and the fifth gear 433 can adopt an integral structure, and the fifth gear 433 and at least one sixth gear 434 can also be arranged separately to facilitate the demoulding process of the transmission gear 432. For example, between the fifth gear 433 and the sixth gear 434, the end face of one of them is provided with a second clamping block 436, and the end face of the other is provided with a second clamping groove 437 that cooperates with the second clamping block 436. When the second clamping block 436 is placed in the second clamping groove 437, the connection strength can be further enhanced by bonding or other methods. Similarly, the sixth gear 434 and the rotating shaft 435 can also adopt a connection method similar to that between the sixth gear 434 and the fifth gear 433, and adopt an integral or split structure.

[0286] The number of the internal teeth 42 is an integer multiple (e.g., 8 times) of the number of the force blocks 20, so that the ring gear 40, the transmission gear 432, and the rack 431 are phase-synchronized, thereby ensuring the synchronous movement of the force blocks 20. For example, the number of the internal teeth 42 is 96, and the number of the force blocks 20 is 12; the number of the internal teeth 42 is 104, and the number of the force blocks 20 is 8.

[0287] In order to enable the ring gear 40 to drive the stroke of the force block 20 as much as possible under a smaller stroke, the transmission ratio range of the fifth gear 433 and the ring gear 40 is 1: (5-15); the transmission ratio range of the sixth gear 434 and the ring gear 40 is 1: (5-15). For example, the number of teeth of the fifth gear 433 and the number of teeth of the sixth gear 434 are both 10; the number of teeth of the ring gear 40 is 96, and the transmission ratio of the fifth gear 433 and the ring gear 40 is 1: 9.6; the transmission ratio of the sixth gear 434 and the ring gear 40 is 1: 9.6. The number of teeth of the fifth gear 433 and the number of teeth of the sixth gear 434 are both 12; the number of teeth of the ring gear 40 is 104, and the transmission ratio of the fifth gear 433 and the ring gear 40 is 3: 26; the transmission ratio of the sixth gear 434 and the ring gear 40 is 3: 26.

[0288] The fifth gear 433 and the sixth gear 434 may also be combined with the relevant descriptions about the first gear 9421 and the second gear 9422 in the following embodiments.

[0289] In order to maintain the continuity of the instrument channel 11 in the circumferential direction during the process of retracting and extending the instrument channel 11 , in this embodiment, when the force applying blocks 20 move, two adjacent force applying blocks 20 always abut against each other along the circumferential direction of the instrument channel 11 .

[0290] Reference Figure 6 To Attachment Figure 7 In this embodiment, the end of the force block 20 facing the instrument channel 11 has a bent portion 22 (roughly hook-shaped); along the circumference of the instrument channel 11, the bent portion 22 has a first edge surface 221 on the outside and a second edge surface 222 on the inside; the inner wall of the instrument channel 11 is surrounded by the intersection of the first edge surface 221 and the second edge surface 222 of each force block 20. The rack 431 is connected to the end of the force block 20 facing away from the bent portion 22.

[0291] Along the circumference of the instrument channel 11, of the two adjacent force blocks 20, the first edge surface 221 of one force block 20 fits with the second edge surface 222 of the other force block 20. Along the circumference of the instrument channel 11, of the two adjacent force blocks 20, the second edge surface 222 blocks part of the first edge surface 221, and the part of the first edge surface 221 exposed to the instrument channel 11 is the action surface; when the force blocks 20 switch from gathering to separation, the length of the action surface along the circumference of the instrument channel 11 gradually increases.

[0292] For the same force block, the first edge surface 221 and the second edge surface 222 both smoothly transition to other adjacent parts of the force block 20 through the arc transition surface 223; the angle between the first edge surface 221 and the second edge surface 222 along the circumference of the instrument channel 11 is 30 degrees; the angle between the movement direction of the force block 20 and the second edge surface 222 is 105 degrees, and the angle with the first edge surface 221 is 75 degrees; along the circumference of the instrument channel 11, the angle between the movement directions of two adjacent force blocks 20 is 30 degrees.

[0293] like Fig. 9 In order to limit the movement of the force block 20, referring to one embodiment, a guide groove 19 is provided on the inner wall of the housing 10, and a part of the structure of the force block 20 is placed in the guide groove 19 and can slide along the guide groove 19. For example, for the same force block 20, the number of guide grooves 19 is two, and each guide groove 19 is located at two opposite sides of the force block 20 along the extension direction of the instrument channel 11. Among them, the opening in the guide groove 19 faces the force block 20, and the opening has a flared opening 191, and the flared opening 191 can guide the force block 20 to enter the guide groove 19. The guide groove 19 is partially expanded outward to form a clearance area 193 for avoiding the sixth gear 434.

[0294] Regarding the structure of the guide groove 19, in this embodiment, two guide plates 192 arranged opposite to each other are integrally provided on the inner wall of the housing 10, and the guide groove 19 is formed between the two guide plates 192. Along the circumference of the instrument channel 11, two opposite sides of the force block 20 are respectively fitted with the corresponding guide plates 192 to prevent the force block 20 from shaking in the circumference of the instrument channel 11.

[0295] In this embodiment, if Figure 8As shown, the crimping device 100 further includes an elastic sheet 70 mounted on the housing 10 ; the gear ring 40 is provided with a plurality of latching teeth 44 cooperating with the elastic sheet 70 along its circumference, and the elastic sheet 70 can pass over the latching teeth 44 and vibrate or make a sound.

[0296] One end of the spring 70 is a connecting portion 71 fixedly connected to the housing 10 , and the other end is a triggering portion 72 matched with the latching tooth 44 . The triggering portion 72 extends to the outer wall of the gear ring 40 and is gap-matched with the outer wall of the gear ring 40 .

[0297] The connecting portion 71 is generally cylindrical; the inner wall of the housing 10 is provided with a fixing column 16, the connecting portion 71 is sleeved on the fixing column 16 and fixed to the fixing column 16, and the axis of the fixing column 16 is arranged parallel to the axial direction of the housing 10. For example, the outer wall of the fixing column 16 has a block, and the connecting portion 71 has a slot that matches the block.

[0298] The trigger portion 72 is sheet-shaped and is bent into a substantially C-shape. The trigger portion 72 is fixed to the side wall of the connecting portion 71 and is integrally provided with the connecting portion 71 . At least the trigger portion 72 of the spring sheet 70 is made of elastic material.

[0299] There are multiple (for example, three in the figure) latching teeth 44, which are arranged on the outer periphery of the gear ring 40. Along the circumference of the gear ring 40, the latching teeth 44 have a first guide tooth surface 441 and a second guide tooth surface 442 on both sides, respectively. The first guide tooth surface 441 and the second guide tooth surface 442 meet on the side facing away from the gear ring to form a tooth tip, and the trigger plate 72 will vibrate or make a sound when passing over the tooth tip.

[0300] Combination Figure 1 to Figure 3 In this embodiment, the housing 10 includes:

[0301] A first half shell 12 and a second half shell 121 are buckled together, and a mounting chamber is formed between the first half shell 12 and the second half shell 121;

[0302] The decorative plate 122 is buckled on the first half shell 12 or the second half shell 121 , and the decorative plate 122 covers the back side of the housing 10 .

[0303] The first half shell 12 is generally cylindrical (e.g., a cylinder in the figure); one axial end of the first half shell 12 is closed, and the other end is open. The closed end of the first half shell faces the front side of the housing 10, and the open end faces the back side of the housing 10.

[0304] The second half shell 121 is plate-shaped and is buckled in the opening of the first half shell 12 ; the second half shell 121 and the first half shell 12 can be connected by screws. The decorative plate 122 is buckled in the second half shell 121 .

[0305] In this embodiment, the portion other than the outer periphery of the housing 10 connected to the base 90 is the middle-upper portion, and the outer periphery of the middle-upper portion is closed, so that the components inside the housing 10 will not extend radially outward from the middle-upper portion. Furthermore, the outer periphery of the middle-upper portion extends smoothly to make the appearance of the housing 10 more concise and avoid unnecessary scratches.

[0306] In this embodiment, if Figure 17 to Figure 18 As shown, a crimping device 100 applied to an interventional instrument 200 is provided, comprising:

[0307] The housing 10 is hollow and has an instrument channel 11 therethrough;

[0308] A plurality of force blocks 20, each of which is movably mounted in the housing 10 and distributed around the instrument channel 11. The plurality of force blocks 20 can be relatively gathered and separated, and the instrument channel 11 can be retracted and released accordingly;

[0309] The gear ring 40 is rotatably mounted in the housing 10 and is located at the periphery of the instrument channel 11. The gear ring 40 is transmission-connected to each force-applying block 20 and synchronously drives the multiple force-applying blocks 20;

[0310] The drive shaft 50 , at least a portion of which is located in the housing 10 and linked to the ring gear 40 , and at least a portion of which is used to connect to a power source 51 .

[0311] The power source 51 provides power for the drive shaft 50. The drive shaft 50 only needs to drive the ring gear 40 to rotate to drive the force blocks 20 to separate or gather, so as to reduce the difficulty of alignment between the drive shaft 50 and the ring gear 40, and at the same time reduce the difficulty of assembling the drive shaft 50 and the ring gear 40.

[0312] The manner in which the gear ring 40 drives the force applying block 20 and the structure of the housing 10 can be combined with the above embodiments.

[0313] The drive shaft 50 is a component that can at least transmit torque. The power source 51 can be an electric component or a manual drive component in the prior art. When the motion mode directly output by the power source 51 is inconsistent with the motion mode of the drive shaft 50, an appropriate transmission component can be used to convert and transmit the motion mode. For example, the power source 51 is a knob 52 and / or a motor; at least a portion of the knob 52 is exposed to the housing 10, and the motor is inside the housing 10. The following embodiments are described with the power source 51 being the knob 52.

[0314] The knob 52 and the drive shaft 50 are of an integral or split structure; in the case of a split structure, the knob 52 and the drive shaft 50 are directly or indirectly connected. For example, in the figure, the knob 52 has a matching groove 521, and one axial end of the drive shaft 50 extends into the matching groove 521 and is engaged with the matching groove 521, so that the drive shaft 50 can rotate synchronously with the knob 52. Along the radial direction of the drive shaft 50, the cross-section of the matching groove 521 is non-circular, and the outer contour of the drive shaft 50 is substantially the same as the matching groove 521, so as to ensure that the drive shaft 50 and the knob 52 rotate synchronously.

[0315] The knob 52 is set as shown in one embodiment. The knob 52 includes a housing 522 and a connecting member 523 which is nested in the housing 522 and is engaged with the housing 522. The matching groove 521 is provided in the connecting member 523. The operator drives the driving shaft 50 to move through the connecting member 523 by holding the outer wall of the housing 522.

[0316] The shell 522 and the connecting member 523 are roughly cylindrical. One axial end of the shell 522 is closed, and the other end is open. The outer edge of the opening of the shell 522 fits the side wall of the housing 10; one axial end of the connecting member 523 extends into the shell 522, and the other end extends into the housing 10. For example, the outer side wall of the connecting member 523 is provided with a third clamping block 524, and the inner side wall of the shell 522 is provided with a third clamping groove 525 that matches the third clamping block 524, so as to connect the shell 522 and the connecting member 423. In order to facilitate holding, the outer periphery of the shell 522 is provided with a plurality of recesses 526.

[0317] In this embodiment, the knob 52 is located on the front of the housing 10 in the extension direction of the instrument channel 11. At least a portion of the knob 52 is located outside the housing 10, and an elastic gasket is provided between the portion and the outer wall of the housing 10. The elastic gasket can increase the friction between the knob 52 and the housing 10, and lock the position of the knob 52. The outer wall of the housing has a concave area 123 corresponding to the position of the knob 52, and the elastic gasket is placed in the concave area 123 and is at the same height as the peripheral part of the housing 10. For example, the elastic gasket is annular, and the elastic gasket is sleeved on the knob 52 (connecting member 523), and one axial side of the elastic gasket is in contact with the housing 10, and the other side is in contact with the knob 52 (the side of the housing 522 facing the housing 10).

[0318] The drive shaft 50 has an axis in space, and the knob 52 can drive the drive shaft 50 to rotate around its own axis. At this time, the axis of the drive shaft 50 can be understood as the rotation axis of the drive shaft 50. The rotation axis of the drive shaft 50 is parallel to the rotation axis of the gear ring 40; along the radial direction of the gear ring 40, the drive shaft 50 is located outside the gear ring 40, so as to avoid increasing the size of the crimping device 100 in the extension direction of the instrument channel 11, so as to make the structure of the crimping device 100 more compact.

[0319] The drive shaft 50 and the gear ring 40 are directly driven or driven through the linkage assembly 53. The outer periphery of the annular portion 41 is provided with drive teeth 411 meshing with the linkage assembly 53. The housing 10 is radially convex, and the convex portion and the other portions of the housing 10 are transitioned through an arc surface. The convex portion can increase the internal space of the housing 10, which is convenient for assembling the drive shaft 50 and the linkage assembly 53.

[0320] The linkage assembly 53 transmits the output of the drive shaft 50 to the ring gear 40 to rotate the ring gear 40. The linkage assembly 53 can adopt various transmission methods in the prior art according to the installation position and movement form of the drive shaft 50 and the ring gear 40, and change the direction and speed of movement to adapt to the working characteristics of the drive shaft and the ring gear. For example, the linkage assembly 53 is driven by a gear set or a worm gear. The following embodiments are described with the linkage assembly 53 adopting a gear set.

[0321] The gear set includes a plurality of gears meshing and transmitting, and the rotation axis of each gear is parallel to the drive shaft. The number of gears is 2 to 5, for example, the number of gears in the figure is 2. For example, the gear set includes a third gear 531 and a fourth gear 532, the third gear 531 is fixedly arranged coaxially with the drive shaft 50, the fourth gear 532 is rotationally matched with the housing 10, and the fourth gear 532 is meshed and transmitted between the third gear 531 and the ring gear 40. Among them, the third gear 531 and the fourth gear 532 are both in the housing, and along the radial direction of the ring gear 40, the third gear 531 and the fourth gear 532 are both on the outside of the ring gear 40.

[0322] The fourth gear 532 includes at least a first unit tooth 533 and a second unit tooth 534 arranged coaxially, the first unit tooth 533 meshes with the third gear 531, and the second unit tooth 534 meshes with the driving tooth 411. The tooth thickness ratio of the first unit tooth 533 and the second unit tooth 534 is 1:0.7-1.5, so as to strengthen the structural strength between the first unit tooth 533 and the second unit tooth 534. Along the axial direction of the gear ring 40, the outer peripheral edge of the gear ring 40 is partially offset and forms an offset area 46, and the driving tooth 411 is located in the offset area 46; the gear ring 40 forms an avoidance area 47 on the front side of the offset area 46 (towards the front side of the housing 10), and the avoidance area 47 accommodates the first unit tooth 533. The pitch circle diameter of the first unit tooth 533 is D3, and the pitch circle diameter of the second unit tooth 534 is D4, and D3:D4=1:(0.4-0.7) is satisfied.

[0323] Combination Figure 3 , Fig. 9 , Fig.10The inner wall of the housing 10 is provided with a mounting column 15, which is a double-layer structure with inner and outer layers nested. The inner part of the double-layer structure has an axial hole 151 that matches the axle 536 of the fourth gear 532. The double-layer structure can strengthen the connection strength between the mounting column 15 and the housing 10 and provide stable support for the axle 536. The mounting column 15 is integrally arranged with the housing.

[0324] The mounting column 15 includes an inner cylinder 152, an outer cylinder 153 and a sealing plate 154. The inner cylinder 152 has an axial hole 151. The outer cylinder 153 is sleeved on the outer side of the inner cylinder 152. The sealing plate 154 is annular. The inner periphery of the sealing plate 154 is connected to the end of the inner cylinder 152, and the outer periphery is connected to the end of the outer cylinder 153.

[0325] The mounting column 15 further includes a reinforcing rib plate, which is fixed between the inner cylinder 152 and the outer cylinder 153 and extends along the axial direction of the mounting column 15. There are multiple reinforcing rib plates, which are arranged along the axial direction of the inner cylinder 152.

[0326] In this embodiment, a first alignment mark 54 is provided between the drive shaft 50 and the housing 10 to indicate the predetermined direction of the knob 52 and determine the installation position of the knob 52. The first alignment marks 54 are provided in pairs, wherein one first alignment mark 54 is provided on the inner wall of the housing 10, and the other first alignment mark 54 is provided on the drive shaft 50.

[0327] There is no strict limitation on the specific shape of the first alignment mark 54. For example, the first alignment mark 54 is a triangle, a square, etc. The predetermined direction of the knob 52 can be determined by a direction mark set on the knob 52, or by the shape of the knob 52 (for example, the knob 52 is in a strip shape in the figure).

[0328] In this embodiment, if Figures 19 to 26 As shown, a crimping device 100 applied to an interventional instrument 200 is provided, comprising:

[0329] The housing 10 is hollow and has an instrument channel 11 therethrough;

[0330] A plurality of force blocks 20, each of which is movably mounted in the housing 10 and distributed around the instrument channel 11. The plurality of force blocks 20 can be relatively gathered and separated, and the instrument channel 11 can be retracted and released accordingly;

[0331] The gear ring 40 is rotatably mounted in the housing 10 and is located at the periphery of the instrument channel 11. The gear ring 40 is transmission-connected to the gear ring 40 and synchronously drives the multiple force-applying blocks 20. The gear ring 40 is provided with multiple limiting structures 45. The multiple limiting structures 45 are at different circumferential positions of the gear ring 29.

[0332] The shift member 60 is movably installed relative to the housing 10 . The shift member 60 has a plurality of working positions. In each working position, the shift member 60 cooperates with the corresponding limiting structure 45 to limit the rotation of the gear ring 40 .

[0333] During the rotation of the ring gear 40, each limiting structure 45 will rotate synchronously with the ring gear 40; when the shift member 60 cooperates with the limiting structure 45, the position of the ring gear 40 can be fixed, and at this time, the position of the force block 20 can be fixed to limit the compression of the interventional instrument 200 by the force block 20; during the rotation of the ring gear 40, different limiting structures 45 will cooperate with the shift member 60 to achieve the effect of step-by-step compression of the interventional instrument 200.

[0334] The manner in which the gear ring 40 drives the force applying block 20 and the structure of the housing 10 can be combined with the above embodiments.

[0335] Each limiting structure 45 has a different radial position on the gear ring 40; the shift member 60 moves to the corresponding working position along the radial direction of the gear ring 40. The limiting structure 45 is a limiting step 451 set on the gear ring 40. The shift member 60 is limited by the corresponding limiting step 451 along the circumference of the gear ring 40 in the working position. Each limiting step 451 is set along the inner peripheral edge of the gear ring 40, and there is a transition surface 452 extending along the circumference of the gear ring 40 between two adjacent limiting steps 451. When the shift member 60 switches between two adjacent limiting steps 451, the shift member 60 avoids the transition surface 452. Among them, along the circumference of the instrument channel 11, the shift member 60 is located between two adjacent force blocks 20, and the movement path of the shift member 60 avoids each force block 20.

[0336] In this embodiment, the crimping device 100 also includes a driving mechanism 61 for driving the shift member 60; the driving mechanism 61 includes an operating button 611, a transmission member and an elastic member 613, and the operating button 611 is rotatably installed on the shell 10; the transmission member is linked with the operating button 611, and can drive the shift member 60 to switch between various working positions; the elastic member 613 acts on the shift member 60 to keep the shift member 60 in the working position.

[0337] The operating button 611 is located on the front side of the housing 10. For example, in the figure, the operating button 611 and the viewing window 14 on the same side are respectively arranged on two opposite sides of the instrument channel 11.

[0338] The transmission member is a cam 612, and the rotation axis of the cam 612 is perpendicular to the movement direction of the shift member 60; the movement direction of the shift member 60 is parallel to the bottom surface of the crimping device 100. The outer peripheral side of the cam 612 is a continuous curved surface, and the shift member 60 can abut against the outer peripheral side of the cam 612. When the shift member 60 abuts against the outer peripheral side of the cam 612 at different positions, the working position of the shift member 60 can be changed.

[0339] A second alignment mark 64 is provided between the cam 612 and the housing 10, and the second alignment mark 64 is used to indicate the cam 612, so that the shift member 60 is in a non-working position. The non-working state of the shift member 60 is understood as a state other than the working state. For example, the outer side of the cam 612, which is farthest from the rotation axis, fits the locking portion 651 of the shift member 60.

[0340] The second alignment marks 64 are arranged in pairs, one of which is placed on the inner wall of the housing 10, and the other is placed on the side wall of the cam 612. There is no strict restriction on the specific shape of the second alignment marks 64. For example, the second alignment marks 64 are triangles, squares, etc.

[0341] The operating button 611 and the cam 612 are transmitted through a plurality of mutually meshing transmission gears 62, and the rotation axis of the operating button 611, the rotation axis of the cam 612, and the rotation axis of each transmission gear 62 are parallel. For example, in the figure, there are two transmission gears 62, namely a first transmission gear 621 and a second transmission gear 622, the first transmission gear 621 is coaxially arranged with the operating button 611, the second transmission gear 622 is coaxially arranged with the cam 612, and the first transmission gear 621 and the second transmission gear 622 are meshed and transmitted.

[0342] In order to limit the movement of the shift member 60, referring to one embodiment, the inner wall of the housing 10 is provided with a guide groove 194, and a part of the structure of the shift member 60 is placed in the guide groove 194 and can slide along the guide groove 194 to limit the movement path of the shift member 60. For example, the number of the guide grooves 194 is two, and each guide groove 194 is located at two opposite sides of the shift member 60 along the axial direction of the housing 10.

[0343] In this embodiment, the shift member 60 at least includes a driving portion 65 abutting against the outer peripheral side of the cam 612, a locking portion 651 cooperating with the limiting structure 45, and a transmission portion 652 connected to the elastic member 613; along the axial direction of the gear ring 40, the driving portion 65 and the locking portion 651 are located at two opposite sides of the shift member 60. The driving portion 65 faces the radial outer side of the shift member 60; the locking portion 651 is arranged perpendicular to the direction of the shift member 60.

[0344] The shift member 60 is generally block-shaped (e.g., a rectangular body in the figure), and has a top surface and a bottom surface opposite to each other; the shift member 60 is located between the inner wall of the housing 10 and the gear ring 40. The shift member 60 has a first groove structure 653 and a second groove structure 654 along the axial direction of the gear ring 40, and a third groove structure 655 on the radial inner side; wherein the first groove structure 653 accommodates a part of the structure of the gear ring 40; the second groove structure 654 accommodates the cam 612, and one of the inner walls of the second groove structure 654 is the driving part 65, and is an arc surface; the bottom wall of the third groove structure 655 is the transmission part 652, and the elastic member 613 presses against the bottom wall of the third groove structure 655; the locking part 651 is located on the top surface of the shift member 60, and is located between the first groove structure 653 and the third groove structure 655.

[0345] In this embodiment, the elastic member 613 is a compression spring, and the elastic member 613 is pressed between the transmission part 652 and the inner wall of the housing 10 (the groove wall on the radial inner side of the guide groove 194), and applies force to the radial inner side of the shift member 60. A column 656 is provided in the third groove structure 655, and the end of the elastic member 613 is sleeved on the outer side of the column 656 to fix the elastic member 613.

[0346] In this embodiment, the crimping device 100 further includes a locking member 63 for locking the shift member 60 in a corresponding working position. The locking member 63 directly or indirectly interferes with at least one of the following moving parts: the shift member 60; the operating button 611; the cam 612; the transmission gear 62.

[0347] The inner wall of the housing 10 has a plurality of locking grooves 632 that cooperate with the locking member 63 , and the plurality of locking grooves 632 are sequentially arranged along the rotation or movement direction of the moving component.

[0348] The locking member 63 is disposed on the first transmission gear 621, and the housing 10 is provided with a plurality of locking grooves 632 arranged along the circumference of the first transmission gear 621. For example, in the figure, the number of the locking grooves 632 is 3.

[0349] The locking member 63 includes a locking tongue 631 and a connecting arm 633. The connecting arm 633 is connected between the locking tongue 631 and the moving part. The extending tendency of the connecting arm 633 is arc-shaped. Both ends of the connecting arm 633 are connected to the moving part, and the locking tongue is located at the top of the arc of the connecting part. As shown in the figure, both ends of the connecting arm 633 are connected to the first transmission gear 621 respectively, and the arc-shaped opening of the connecting arm 633 faces the rotation axis of the first transmission gear 621; the locking tongue 631 is located in the middle part of the connecting arm 633 and is arranged away from the rotation axis of the first transmission gear 621. During the rotation of the first transmission gear 621, the locking tongue 631 will be stuck in the corresponding locking groove 632 to limit the rotation of the first transmission gear 621, and the connecting arm 633 can be deformed to adapt to the locking tongue 631 entering and exiting the corresponding locking groove 632.

[0350] The compressed interventional device 200 needs to be loaded into the tube. In order to support the tube, in this embodiment, Figures 27 to 31 As shown, a bracket 80 is also installed on the front of the housing 10. The bracket 80 is detachably mounted on the housing 10 in a snap-fit ​​manner and has a support position corresponding to the position of the instrument channel 11. When the pipe is placed at the support position, the channel in the pipe is arranged opposite to the instrument channel 11, so that the interventional instrument 200 can enter the channel in the pipe.

[0351] The interior of the bracket 80 is used as a bearing bracket 812 of the support position. The bracket 80 is a cylindrical structure, and the bracket 80 includes two radially spliced ​​first half cylinder 81 and second half cylinder 811, and the space enclosed between the first half cylinder 81 and the second half cylinder 811 is the bearing bracket 812.

[0352] The first half cylinder 81 is engaged with the second half cylinder 811. For example, in the figure, the first half cylinder 81 is located below the second half cylinder 811, one side of the first half cylinder 81 has a semi-open rotation groove 813, and the other side opposite thereto is provided with a limit tooth 814, one side of the second half cylinder 811 is provided with a fixed shaft 815 matched with the rotation groove 813, and the other side opposite thereto is provided with a clamping block 816 matched with the limit tooth 814. The limit tooth 814 protrudes from the outer side wall of the first half cylinder 81; the clamping block 816 has a guide surface 818 and a locking surface 819, and the limit tooth 814 passes over the clamping block 816 from the guide surface 818 and is limited by the locking surface 819.

[0353] The side wall of the second half cylinder 811 has an operating ear 817, and the engaging block 816 is located at the operating ear 817. When the engaging block 816 passes over the limiting tooth 814, the operating ear 817 can be deformed. The operating ear 817 protrudes from the second half cylinder 811 and smoothly transitions with the second half cylinder 811.

[0354] The first half cylinder 81 is also provided with a fitting portion 83 on the side facing the housing 10, and the fitting portion 83 is provided with a plurality of clamping blocks 831, and the housing 10 is provided with a plurality of clamping slots 832 that match the clamping blocks 831. For example, in the figure, there are two clamping blocks 831, which are provided on the fitting portion 83 and located on both sides of the radial direction of the instrument channel 11; correspondingly, there are two clamping slots 832, which are located on the housing 10, and the openings of the two clamping slots 832 face different directions. When installing the bracket 80, by rotating the bracket 80, each clamping block 831 is respectively clamped into the corresponding clamping slot 832, so that the bracket 80 can be fixed on the housing 10.

[0355] The fitting portion 83 is in a fan-shaped ring shape, and the central angle of the fitting portion 83 is 120 to 180 degrees. The fitting portion 83 is located in the lower half of the instrument channel 11. The housing 10 has an installation area 17 around the instrument channel 11, and the installation area 17 is concave. When the fitting portion 83 is placed in the installation area 17, the outer surface of the fitting portion 83 is flush with the outer surface of the housing 10.

[0356] The bracket 80 further includes a transition section 84 fixedly connected between the first half cylinder 81 and the fitting portion 83. Along the extension direction of the instrument channel 11, the channel in the transition section 84 gradually increases from the first half cylinder 81 toward the housing 10, so as to form a large end and a small end at both ends of the transition section 84. The small end of the transition section 84 smoothly transitions with the first half cylinder 81, and the large end smoothly transitions with the fitting portion 83. The transition section 84 is semi-cylindrical, and the cross section of the transition section 84 along the radial direction of the instrument channel 11 is U-shaped. The top of the transition section 84 is open when the crimping grip 100 is in use. The top surface of the transition section 84 is substantially flush with the top surface of the first half cylinder 81.

[0357] An elastic pad 82 is provided in the bearing bracket 812. The elastic pad 82 is installed on the inner wall of the bearing bracket 812. The elastic pad 82 can increase the friction between the bearing bracket 812 and the pipe. For example, the elastic pad 82 is made of silicone. Of course, in some other embodiments, the inner wall of the bearing bracket 812 can also be made of silicone, and the setting of the elastic pad 82 can be omitted.

[0358] The elastic pad 82 is a cylindrical structure, and the side wall of the elastic pad 82 is in contact with the inner wall of the bearing bracket 812. The elastic pad 82 includes two radially spliced ​​unit pads, and a channel is formed between the two unit pads for the tube body to pass through.

[0359] Reference Fig.32 And attached Fig.33 In this embodiment, the crimping device 100 also includes a base 90 having a mounting groove 911 , and the outer wall of the shell 10 has a fixing portion 18 , which can extend into the mounting groove 911 to fix the shell 10 on the base 90 .

[0360] The base 90 is generally plate-shaped, and has an upwardly protruding boss 91 in the middle of the base 90, and the mounting groove 911 is located on the boss 91. The top surface of the mounting groove 911 is open to the end surface of the boss 91, and when the fixing portion 18 is placed in the mounting groove 911, the end surface of the boss 91 abuts against the side surface of the housing 10.

[0361] The fixing portion 18 is substantially cylindrical and has an axial direction in space. One axial end of the fixing portion 18 is connected to the housing 10 , and the other end extends toward the base 90 and is open.

[0362] A positioning assembly 92 is provided between the base 90 and the housing 10, so that the fixing portion 18 and the mounting groove 911 have a unique matching relationship in the circumferential direction, and the positioning assembly 92 can determine the mounting position between the base 90 and the housing 10. For example, the positioning assembly 92 includes a foolproof ridge 921 and a foolproof groove 922 matched with the foolproof ridge 921, the foolproof ridge 921 is provided on one of the groove wall of the mounting groove 911 and the side wall of the fixing portion 18, and the foolproof groove 922 is provided on the other of the groove wall of the mounting groove 911 and the side wall of the fixing portion 18.

[0363] The unique matching relationship can be understood as: when the fixing portion 18 and the mounting groove 911 rotate 360 ​​degrees, there is only one position that makes the fixing portion 18 match the mounting groove 911. For example, the number of foolproof ridges 921 is 1, and the number of corresponding foolproof grooves 922 is 1. The foolproof groove 922 is arranged on the side wall of the fixing portion 18 and extends along the axial direction of the fixing portion 18, and the bottom of the foolproof groove 922 is open. The bottom of the foolproof groove 922 has a flared opening 923 for guiding the foolproof ridges 921 to enter.

[0364] In order to further strengthen the connection strength between the fixing portion 18 and the installation slot 911, the fixing portion 18 has a latch 181, and the slot wall of the installation slot 911 is provided with a locking slot 912 that matches the latch 181. There are multiple latches 181, and they extend along the circumference of the fixing portion 18.

[0365] Each of the latches 181 is connected to the bottom of the fixing portion 18 through a cantilever 182, and the locking groove 912 is located at the bottom wall of the mounting groove 911. The cantilever 182 extends from the bottom of the fixing portion 18 to the base 90, and the cantilever 182 can be deformed to adapt to the installation of the latch 181.

[0366] refer to Figures 36 to 40 As shown, in one embodiment of the present application, a crimping device 9100 for compressing an interventional instrument is disclosed, comprising:

[0367] A housing 910, wherein the housing 910 has an instrument channel 9101 therethrough;

[0368] The force blocks 920 are multiple and movably mounted in the housing 910. The force blocks 920 are distributed around the instrument channel 9101. The multiple force blocks 920 are in a relatively gathered state (for example Fig.38 state in each force applying block 920) or a separated state (e.g. Fig.39 The state of each force block 920 in the switching state, and the corresponding retractable instrument channel 9101 during the switching state;

[0369] The gear ring 930 is rotationally matched with the housing 910 , and the gear ring 930 synchronously drives the multiple force blocks 920 to switch states.

[0370] In order to facilitate in vivo delivery, the interventional device 990 needs to be radially compressed using a crimper 9100 before surgery to obtain a smaller radial size. After compression, it is loaded into the delivery system and delivered to the treatment site in the body in a compressed state. Finally, it is expanded to the functional size at the desired position.

[0371] This embodiment further discloses a driving mechanism 950, which includes a driving handle 951 that is indirectly or directly connected to the ring gear 930. The operator holds the driving handle 951 and pulls the driving handle 951 to rotate the ring gear 930 relative to the housing 910.

[0372] When the interventional instrument 990 has not entered the instrument channel 9101, the multiple force blocks 920 are in a separated state. After the interventional instrument 990 enters the instrument channel 9101, the gear ring 930 is rotated to synchronously drive the multiple force blocks 920 to gradually switch from the separated state to the gathered state. During the process of the multiple force blocks 920 switching states, the multiple force blocks 920 will shrink the instrument channel 9101, and the inner wall of the instrument channel 9101 squeezes the interventional instrument 990. The inner wall of the instrument channel 9101 will evenly reduce the size of the interventional instrument 990 until the multiple force blocks 920 are in a gathered state. The synchronous movement of the multiple force blocks 920 means that each force block 920 moves at the same time and the movement speed of each force block 920 is the same.

[0373] The shell 910 is provided with correspondingly arranged windows 914 , each window 914 is communicated with the installation chamber 912 , and an instrument channel 9101 is formed between the two windows 914 ; each force applying block 920 is exposed at the corresponding window 914 when the force applying block 920 is in the retracted state.

[0374] In the present application, the force block 920 is driven to move by the gear ring 930, so that the number of parts of the crimping device 9100 is reduced, the mold opening cost and part size can be better controlled, and the assembly is simple without complicated fixed assembly.

[0375] The inner wall of the instrument channel 9101 is formed by the cooperation of the force blocks 920. It should be explained that the multiple force blocks 920 in the gathered state and the separated state are relative concepts, and the separated state corresponds to: the force blocks 920 are radially outward and have a tendency to move away from each other. When the multiple force blocks 920 are in the gathered state, for example, the inner diameter of the instrument channel 9101 is at the minimum value; when the multiple force blocks 920 move radially outward from the gathered state, the multiple force blocks 920 are in the separated state.

[0376] Reference Fig.56The interventional device 990 has no strict restrictions on the specific shape, for example, it may include a stent 991, with a connecting ear 992 at one axial end of the stent 991, and the connecting ear 992 may be provided with an expansion head at the end. The stent 991 is a radially compressible or expandable structure, generally a mesh tube structure formed by cutting or weaving. In this embodiment, the interventional device 990 is an artificial heart valve.

[0377] In this embodiment, the ring gear 930 uses a meshing transmission method to synchronously drive the multiple force blocks 920 to switch between the gathered state and the separated state. The meshing transmission method can improve the stability and accuracy of the ring gear 930 driving the multiple force blocks 920. For details on how the ring gear 930 synchronously drives the multiple force blocks 920 to switch states, please refer to the specific description of the transmission mechanism 940 below, which will not be expanded here.

[0378] Reference Fig.41 To Attachment Fig.46 In this embodiment, the crimping device 9100 further includes a transmission mechanism 940, which is connected in transmission between the ring gear 930 and each force block 920. The transmission mechanism 940 is used to transmit the output of the ring gear 930 to each force block 920 so that each force block 920 moves synchronously. According to the installation position and movement form of the ring gear 930 and each force block 920, various transmission methods in the prior art can be adopted, and the direction and speed of movement can be changed to adapt to the working characteristics of each force block 920. The transmission mechanism 940 at least ensures the necessary mechanical strength and a good and precise matching method to ensure the movement trajectory, speed and reaction time of each force block 920.

[0379] Reference Fig.41 To Attachment Fig.42 In this embodiment, the transmission mechanism 940 includes a rack 941 and a transmission gear 942. The rack 941 is provided at each force block 920. The transmission gear 942 is rotatably installed in the housing 910. Each rack 941 and the ring gear 930 are meshed and transmitted through one or more transmission gears 942 and the ring gear 930. During the rotation of the ring gear 930, the transmission gear 942 will synchronously drive each rack 941 to move, so as to drive the force block 920 to move. In this application, the ring gear 930, the transmission gear 942 and the rack 941 are meshed and transmitted, so that the ring gear 930 can stably drive the force block 920 to move.

[0380] The transmission gear 942 has a rotation axis, which is the axis when the transmission gear 942 rotates around its own geometric center. The gear ring 930 has a rotation axis, which is the axis when the gear ring 930 rotates around its own geometric center.

[0381] In this embodiment, the transmission gear 942 includes multiple sets, each set corresponding to a force block 920. The shapes of the transmission gears 942 are the same, which is convenient for mass production; during the installation of the transmission gear 942, there is no need to identify the type of the transmission gear 942, which simplifies the assembly method of the transmission gear 942.

[0382] For the specific structure of the gear ring 930, refer to the attached Fig.43 In this embodiment, the gear ring 930 includes an annular portion 931 and driving teeth distributed on the annular portion 931 and drivingly matched with the force applying block 920. The driving teeth 932 are arranged in at least one of the following ways:

[0383] The driving teeth 932 are internal teeth distributed on the inner edge of the annular portion;

[0384] The driving teeth 932 are external teeth distributed on the outer edge of the annular portion 931;

[0385] The driving teeth 932 are side teeth distributed on the axial end surface of the annular portion 931 .

[0386] In this embodiment, the driving teeth 932 are internal teeth distributed on the inner edge of the annular portion 931 , and the following embodiments are described on this basis.

[0387] In order to reduce the weight of the gear ring 930 , referring to one embodiment, a plurality of weight-reducing grooves 933 are formed in the annular portion 931 along the circumference of the gear ring 930 .

[0388] The annular portion 931 has a certain space therein. In order to make the structure of the crimping device 9100 more compact and reduce the size of the crimping device 9100, referring to one embodiment, the gear ring 930 surrounds the periphery of the plurality of force applying blocks 920. Similarly, the gear ring 930 also surrounds the periphery of each transmission gear 942.

[0389] In this embodiment, the rotation axis of the gear ring 930 is parallel to the extension direction of the instrument channel 9101. The instrument channel 9101 has a central axis, which passes through the geometric center of the instrument channel 9101. During the process of each force block 920 retracting and releasing the instrument channel 9101, the position of the central axis of the instrument channel 9101 will not change. Among them, the central axis of the instrument channel 9101 is roughly consistent with the rotation axis of the gear ring 930 (in this embodiment, the central axis of the instrument channel 9101 is consistent with the rotation axis of the gear ring 930). In order to reduce the size of the crimping gripper 9100 in the extension direction of the instrument channel, referring to one of the embodiments, the rotation axis of the transmission gear 942 is parallel to the rotation axis of the gear ring 930.

[0390] If the movement path of the rack 941 does not avoid the gear ring 930, the movement path of the force block 920 will be shortened, thereby affecting the retraction and extension of the instrument channel 9101. In order to enable the movement path of the rack 941 to avoid the gear ring 930, refer to one embodiment, refer to the attached Fig.42 Along the extension direction of the instrument channel 9101, the rack 941 and the gear ring 930 are staggered.

[0391] Reference Fig.44 To Attachment Fig.46 In this embodiment, two racks 941 are fixed to the same force block 920 and arranged side by side. Along the extension direction of the instrument channel 9101, each rack 941 is located on both sides of the gear ring 930. The transmission gear 942 drives the force block 920 to move by driving the two racks 941. The arrangement of the two racks 941 can increase the force points acting on the force block 920 along the extension direction of the channel, so as to stabilize the operation of the force block 920.

[0392] In this embodiment, the rack 941 and the force block 920 are integrally arranged to increase the structural strength between the rack 941 and the force block 920, and also reduce the processing technology of the rack 941 and the force block 920. Of course, in other embodiments, the rack 941 and the force block 920 may also be separately arranged, and the rack 941 may be fixed to the force block 920 by bonding or welding.

[0393] In this embodiment, the number of the driving teeth 932 is an integer multiple of the number of the force blocks 920, so that the ring gear 930, the transmission gear 942 and the rack 941 are phase-synchronized, thereby ensuring the synchronous movement of the force blocks 920. Preferably, the number of teeth on the driving teeth 932 is 8 times the number of the force blocks 920. In this embodiment, the number of the driving teeth 932 is 96, and the number of the force blocks 920 is 12. Of course, in other embodiments, the number of the driving teeth 932 is 104, and the number of the force blocks 920 is 8.

[0394] Reference Fig.44 To Attachment Fig.45 In this embodiment, the transmission gear 942 adopts 1 to 3 gear transmission, wherein the first stage is meshed with the ring gear 930, and the last stage is meshed with the rack 941. Specifically, in this embodiment, each set of transmission gears 942 includes a first gear 9421 and a second gear 9422 coaxially fixed with the first gear 9421, the first gear 9421 is meshed with the ring gear 930, and the second gear 9422 is meshed with the rack 941 on the corresponding force block 920.

[0395] Along the radial direction of the instrument channel 9101, when the force block 920 is in the gathered state, each rack 941 faces away from the force block 920 and is adjacent to the second gear 9422; when the force block 920 is in the extreme position of the separated state, each rack 941 is adjacent to the inner wall of the housing 910. When the force block 920 is in operation, the force block 920 avoids the first gear 9421 and the second gear 9422 to prevent the first gear 9421 and the second gear 9422 from interfering with the movement of the force block 920.

[0396] Reference Fig.44 To Attachment Fig.46 In this embodiment, a second gear 9422 is respectively configured for each rack 941 on the same force block 920. Along the extension direction of the instrument channel 9101, each set of transmission gears 942 includes two second gears 9422, and the two second gears 9422 are respectively located on both sides of the first gear 9421, and are respectively rotatably matched with the housing 910 through a rotating shaft. Along the extension direction of the instrument channel, the second gears 9422 are at least partially located on both sides of the gear ring 930, and the local positions are meshed with the corresponding racks 941. Of course, in other embodiments, on the same force block 920, for each rack 941, all racks 941 are configured with the same second gear 9422.

[0397] In this embodiment, the axial length of the first gear 9421 is L1, and the axial length of the second gear 9422 is L2, and they satisfy L1:L2=(3-6):1. The axial length of the first gear 9421 and the axial length of the second gear 9422 are adjusted according to the pitch circle diameter of the first gear 9421, the pitch circle diameter of the second gear 9422, and the circumferential length of the gear ring 930.

[0398] Since each force block 920 is equipped with a transmission gear 942, when multiple transmission gears 942 are located in the annular portion 931 of the gear ring 930, in order to avoid mutual interference between the transmission gears 942, there are certain restrictions on the pitch circle diameter of the transmission gears 942. Referring to one embodiment, the pitch circle diameter of the first gear 9421 is D1, the pitch circle diameter of the second gear 9422 is D2, and D1:D2=1:(0.3-0.7). Preferably, D1:D2=1:(0.4-0.6).

[0399] In order to enable the ring gear 930 to drive the stroke of the force block 920 as much as possible under a smaller stroke, referring to one embodiment, the transmission ratio range between the first gear 9421 and the ring gear 930 is 1: (5-15); the transmission ratio range between the second gear 9422 and the ring gear 930 is 1: (5-15). For example, the number of teeth of the first gear 9421 and the number of teeth of the second gear 9422 are both 10; the number of teeth of the ring gear 930 is 96, and the transmission ratio between the first gear 9421 and the ring gear 930 is 1: 9.6; the transmission ratio between the second gear 9422 and the ring gear 930 is 1: 9.6. The number of teeth of the first gear 9421 and the number of teeth of the second gear 9422 are both 12; the number of teeth of the ring gear 930 is 104, and the transmission ratio between the first gear 9421 and the ring gear 930 is 3: 26; the transmission ratio between the second gear 9422 and the ring gear 930 is 3: 26.

[0400] Reference Fig.36 To Attachment Fig.40 And attached Fig.47 And attached Fig.48 In this embodiment, the crimping device 9100 further includes a driving mechanism 950 for driving the gear ring 930 to rotate. The driving mechanism 950 is mainly used to drive the gear ring 930 to rotate along the center direction of the instrument channel 9101. In order to achieve its basic function, a motor, a cylinder, a hydraulic cylinder or even a manual driving component can be selected in the prior art. When the motion mode directly output by the driving mechanism 950 is inconsistent with the motion mode of the gear ring 930, an appropriate transmission component can be used to convert and transmit the motion mode.

[0401] Reference Fig.36 To Attachment Fig.40 And attached Fig.47 And attached Fig.48 , the specific structure of the driving handle 951, referring to one embodiment, the driving handle 951 is a rod-shaped structure, one end of the driving handle 951 is connected to the gear ring 930, and the other end extends in a direction away from the instrument channel 9101.

[0402] Regarding the connection method between the driving handle 951 and the gear ring 930, referring to one embodiment, the housing 910 is provided with an operation window 911, at least a portion of the gear ring 930 is exposed to the operation window 911, and the portion is connected to the driving handle 951. The operation window 911 is arranged opposite to the outer edge of the gear ring 930, the driving handle 951 is connected to the outer periphery of the gear ring 930, and extends away from the gear ring 930, and the extension direction of the driving wrench extends along the radial direction of the instrument channel 9101, so that the operator can operate the driving handle 951.

[0403] In this embodiment, at least a portion of the gear ring 930 is a connection portion 934 exposed to the operation window 911, and the driving handle 951 is detachably fixed to the connection portion 934. The connection portion 934 is mainly used to install the driving handle 951. In order to achieve its basic function, the connection portion 934 can be a groove structure or a protrusion structure, and the driving handle 951 can be fixed to the connection portion 934 by bolts, pins, etc.

[0404] Reference Fig.47 To Attachment Fig.48 In this embodiment, the driving handle 951 includes a gripping portion 9511 and a clamping portion 9512 . The gear ring 930 is provided with a clamping slot 935 that matches the clamping portion 9512 . The driving handle 951 is fixed by clamping the clamping portion 9512 in the clamping slot 935 .

[0405] The clamping portion 9512 is block-shaped, and the outer contour of the clamping portion 9512 is roughly consistent with the contour of the clamping slot 935, so that the clamping portion 9512 fits tightly when placed in the clamping slot 935. Along the extension direction of the instrument channel 9101, at least one side of the clamping slot 935 is open to facilitate the clamping portion 9512 to enter the clamping slot 935.

[0406] In order to increase the firmness of the clamping portion 9512 fixed in the clamping slot 935, referring to one of the embodiments, the driving mechanism 950 also includes a baffle plate 952, and the baffle plate 952 is fixed to the gear ring 930 by clamping, bonding or bolts, and the baffle plate 952 and the gear ring 930 cooperate with each other to limit the opening size of the clamping slot 935 facing away from the instrument channel 9101.

[0407] Along the circumference of the extension channel, the two opposite sides of the operating window 911 can limit the stroke of the driving handle 951. In this embodiment, the center angle corresponding to the stroke of the driving handle 951 is 30 degrees to 120 degrees, and the stroke of the driving handle 951 is determined according to the degree of retraction and expansion of the driving channel. Preferably, the center angle corresponding to the stroke of the driving handle 951 is 30 degrees to 60 degrees. In this embodiment, the center angle corresponding to the stroke of the driving handle 951 is 45 degrees.

[0408] Of course, in other embodiments, the driving mechanism 950 includes an electric component that is transmission-connected to the ring gear 930. The electric component can automatically drive the ring gear 930 to rotate, so as to realize the automatic operation of the crimping device 9100. Regarding the arrangement of the electric component, referring to one embodiment, the electric component is installed on the housing 910, and drives the ring gear 930 to rotate relative to the housing 910. In this embodiment, the electric component is a motor.

[0409] The motor has an output shaft, and a driving gear is installed on the output shaft. The outer edge of the annular portion 931 or the axial end surface of the annular portion 931 is provided with driving teeth, and the driving mechanism 950 also includes a driving gear meshing with the driving teeth, and the electric part drives the ring gear 930 through the driving gear.

[0410] Each force block 920 cooperates with each other to form the inner wall of the instrument channel 9101. In the process of retracting and releasing the instrument channel 9101, in order to keep the instrument channel 9101 continuous in the circumferential direction, refer to the attached Fig.44 To Attachment Fig.46 In this embodiment, when the force blocks 920 are switched from the gathered state to the separated state, two adjacent force blocks 920 always abut against each other along the circumference of the instrument channel 9101 .

[0411] For the specific structure of the force applying block 920, please refer to the attached Fig.44 To Attachment Fig.46 In this embodiment, the end of the force block 920 facing the instrument channel 9101 has a bent portion 921 (roughly hook-shaped); along the circumference of the instrument channel 9101, the bent portion 921 has a first edge surface 9211 on the outside and a second edge surface 9212 on the inside; the inner wall of the instrument channel 9101 is surrounded by the intersection of the first edge surface 9211 and the second edge surface 9212 of each force block 920. The rack 941 is connected to the end of the force block 920 facing away from the bent portion 921; along the extension direction of the instrument channel 9101, the two opposite sides of the force block 920 are respectively flush with the outer surface of the rack 941; along the circumference of the instrument channel 9101, the two opposite sides of the force block 920 (excluding the bent portion 921) are flush with the outer surface of the rack 941.

[0412] Reference Fig.44 To Attachment Fig.46 In this embodiment, along the circumference of the instrument channel 9101, of the two adjacent force blocks 920, the first edge surface 9211 of one force block 920 is in contact with the second edge surface 9212 of the other force block 920. Specifically, referring to one embodiment, along the circumference of the instrument channel 9101, of the two adjacent force blocks 920, the second edge surface 9212 shields the first edge surface 9211, and the portion of the first edge surface 9211 exposed to the instrument channel 9101 is the action surface; when the force blocks 920 are switched from the gathered state to the separated state, the length of the action surface along the circumference of the instrument channel 9101 gradually increases.

[0413] In this embodiment, the first edge surface 9211 and the second edge surface 9212 are connected to other adjacent parts of the force block 920 through the arc transition surface 9213, so that the first edge surface 9211 and the second edge surface 9212 and other adjacent parts of the force block 920 can be smoothly transitioned.

[0414] Further, the specific configuration of the force block 920, referring to one embodiment, for the same force block 920, the angle between the first edge surface 9211 and the second edge surface 9212 along the circumference of the instrument channel 9101 is 30 degrees. For the same force block 920, the angle between the movement direction of the force block 920 and the second edge is 105 degrees, and the angle between the movement direction of the force block 920 and the first edge is 75 degrees. Along the circumference of the instrument channel 9101, the angle between the movement directions of two adjacent force blocks 920 is 30 degrees.

[0415] The shapes of the force blocks 920 are all the same, which is convenient for mass production. During the installation of the force blocks 920 , there is no need to identify the type of the force blocks 920 , which simplifies the assembly method of the force blocks 920 .

[0416] Reference Fig.49 To Attachment Fig.51 , discloses the details of the setting of the housing 910. Referring to one embodiment, the housing 910 is in the shape of a hollow disk, the instrument channel 9101 passes through the axial portion of the disk, the interior of the housing 910 is an installation chamber 912, and the gear ring 930 and the force block 920 are both located in the installation chamber 912. Referring to one embodiment, the instrument channel 9101 is located at the center of the housing 910.

[0417] In order to define the motion path of the force applying block 920, refer to the attached Fig.50 To Attachment Fig.51 The present application discloses a guide unit 913, which is used to limit the movement direction of the force block 920. The guide unit 913 is a guide rail arranged along a predetermined direction. There is no strict restriction on the shape and structure of the guide rail. The guide rail can be a guide rod, or other components with an outer surface arranged along a predetermined direction, such as a baffle arranged along a predetermined direction. In order to adapt to the guide unit 913, the force block 920 has a sliding seat corresponding to the shape of the guide unit 913. For example, when the guide unit 913 is a guide rod, the corresponding sliding seat can be a sliding sleeve mounted on the guide rod. When the guide component is a strip groove, the corresponding sliding seat can be a support block or a support strip embedded in the strip groove.

[0418] Reference Fig.50 To Attachment Fig.51, the present application discloses a guide unit 913, the guide unit 913 includes a guide groove 9132 and a guide block, the guide groove 9132 is provided in one of the housing 910 and the force block 920; the guide block is provided in the other of the housing 910 and the force block 920, and cooperates with the guide groove 9132. The guide groove 9132 can limit the running path of the force block 920 so that the force block 920 moves along a preset path. In this embodiment, the guide groove 9132 is provided in the inner wall of the housing 910, and the guide block is provided in the force block 920. In order to make the operation of the force block 920 more stable, referring to one of the embodiments, for the same force block 920, the number of guide units 913 is two sets, and each guide unit 913 is respectively located on two opposite sides of the force block 920 along the extension direction of the instrument channel 9101.

[0419] Reference Fig.50 To Attachment Fig.51 In this embodiment, the guide groove 9132 is formed by fixing two guide plates 9131 on the inner wall of the housing 910, and forming the guide groove 9132 between the two guide plates 9131. The guide plate 9131 and the housing 910 are integrally arranged to strengthen the connection strength between the guide plate 9131 and the housing 910, while reducing the difficulty of the processing technology of the guide plate 9131 and the housing 910.

[0420] In this embodiment, the two guide plates 9131 are arranged in parallel, and along the circumference of the instrument channel 9101, the two opposite sides of the guide block are respectively in contact with the inner wall of the guide groove 9132 to prevent the force block 920 from shaking along the circumference of the instrument channel 9101.

[0421] In this embodiment, the guide block and the force block 920 are integrally arranged, and the guide block is a partial structure of the force block 920, which can strengthen the connection strength between the guide plate 9131 and the housing 910, and can also reduce the difficulty of the processing technology of the guide plate 9131 and the housing 910. Of course, in other embodiments, the guide block and the force block 920 are separately arranged, and the guide block is fixed to the housing 910 by welding or bonding.

[0422] When the guide block is installed in the guide groove 9132 , in order to reduce the difficulty of installation, referring to one embodiment, the opening of the guide groove 9132 faces the force block 920 , and the opening has a flared opening, which can guide the guide block into the guide groove 9132 .

[0423] In this embodiment, at least part of the structure of the second gear 9422 is located in the guide groove 9132. When the tooth top circle of the second gear 9422 is larger than the width of the guide groove 9132, the guide groove 9132 is partially expanded to form an escape zone 9133 for escaping the second gear 9422; when the tooth top circle of the second gear 9422 is smaller than the width of the guide groove 9132, part of the structure of the second gear 9422 can be directly placed in the guide groove 9132.

[0424] In this embodiment, the crimping device 9100 further includes a transmission mechanism 940, which is located in the installation chamber 912 and is transmission-connected between the ring gear 930 and each force-applying block 920. In this embodiment, the crimping device 9100 further includes a driving mechanism 950 for driving the ring gear 930 to rotate, and the driving mechanism 950 is completely located in the installation chamber 912, or at least a part of the driving mechanism 950 is located outside the installation chamber 912.

[0425] In this embodiment, the housing 910 is a split buckle structure, which is composed of at least two parts, and each part is arranged along the axial direction of the housing 910. Each buckle part includes a body 915 with an opening and a cover plate 916 buckled at the opening of the body 915. The body 915 has a cavity, and the gear ring 930, each force block 920 and each transmission mechanism 940 are all located in the cavity. The instrument channel 9101 passes through the cover plate 916 and the body 915 in sequence.

[0426] Reference Fig.40 And attached Fig.52 In this embodiment, the crimping device 9100 further includes a base 960, and the housing 910 is detachably mounted on the base 960. The crimping device 9100 is fixed to the support surface through the base 960. The crimping device 9100 has a bottom surface (e.g. Fig.52 A in ), and the top surface opposite to the bottom surface (e.g. Fig.52 B in the figure). Unless otherwise specified, the bottom surface of the crimping device 9100 should be understood as the bottom surface of the base 960. Since the crimping device 9100 can be placed at various angles, the side facing vertically downward may be side A or may not be side A at different placement angles. Therefore, the bottom surface in this application does not refer to the side facing downward in actual use.

[0427] The form in which the housing 910 is fixed to the base 960 is shown in the attached Fig.40 In this embodiment, the crimping device 9100 further includes a clamping structure 961, and the housing 910 is detachably mounted on the base 960 through the clamping structure 961. The clamping structure 961 is used to fix the housing 910 on the base 960, and also facilitates the removal of the housing 910 relative to the base 960. According to the installation position of the housing 910 and the base 960, various clamping methods in the prior art can be adopted, such as nuts, bolts, bonding, etc.

[0428] Reference Fig.40 The present application discloses a snap-fit ​​structure 961, which includes a snap-fit ​​tongue 9611 and a snap-fit ​​groove 9612 matched with the snap-fit ​​tongue 9611. The snap-fit ​​tongue 9611 is disposed on one of the base 960 and the housing 910; the snap-fit ​​groove 9612 is disposed on the other of the base 960 and the housing 910. When the housing 910 is mounted at a predetermined position of the base 960, the snap-fit ​​tongue 9611 and the snap-fit ​​groove 9612 are snap-fitted and fixed to each other, so that the housing 910 can be fixed to the base 960; when the housing 910 is removed from the base 960, the snap-fit ​​tongue 9611 and the snap-fit ​​groove 9612 only need to be separated to remove the housing 910 from the base 960.

[0429] Reference Fig.40 In this embodiment, the base 960 has a mounting groove 962 that matches the housing 910, and the snap-fit ​​structure 961 is located between the groove wall of the mounting groove 962 and the housing 910. The mounting groove 962 is open on the bottom surface facing away from the base 960, and the housing 910 enters from the opening of the mounting groove 962 until the latch 9611 and the latch groove 9612 are snap-fitted and fixed to each other, at which time part of the structure of the housing 910 is placed in the mounting groove 962.

[0430] When the shell 910 is placed in the mounting groove 962: along the extension direction of the instrument channel 9101, the axial ends of the shell 910 are respectively fitted with the two opposite sides corresponding to the mounting groove 962; the bottom wall of the mounting groove 962 is fitted with the outer edge of the shell 910 (in this embodiment, the bottom wall of the mounting groove 962 is an arc that matches the shell 910).

[0431] The latch tongue 9611 is integrally formed with the inner wall of the mounting groove 962 to strengthen the connection strength between the latch tongue 9611 and the housing 910 and reduce the processing technology between the latch tongue 9611 and the housing 910. In order to facilitate the latch tongue 9611 and the slot 9612 to be engaged, the latch tongue 9611 and / or the slot 9612 have a guiding slope, which can guide the latch tongue 9611 into the slot 9612.

[0432] In order to stably fix the housing 910 on the mounting base, in one embodiment, there are at least two groups of the clamping structures 961, and the two groups of the clamping structures 961 are respectively located on two opposite sides of the housing 910. In other embodiments, there are also multiple groups of the clamping structures 961 on the same side of the housing 910.

[0433] In this embodiment, when the crimping gripper 9100 is in use, the lowest and highest points of the travel of the driving handle 951 are both located on the longitudinal section of the housing 910 (eg Fig.52The longitudinal section is perpendicular to the bottom surface of the base 960 and passes through the axis of the housing 910. Referring to one embodiment, when the crimping device 9100 is in use, the central angle between the highest point of the driving wrench stroke and the highest point of the housing 910 is 40 degrees to 60 degrees. Preferably, the central angle between the highest point of the driving wrench stroke and the highest point of the housing 910 is 40 degrees.

[0434] Attached Fig.40 In this embodiment, the crimping device 9100 further includes a limiting component 970 , and the limiting component 970 directly or indirectly interferes with at least one of the following: the ring gear 930 ; the force block 920 ; the transmission mechanism 940 ; and the driving mechanism 950 .

[0435] The limiting component 970 is mainly used to limit the folded state of each force block 920, so there is no strict restriction on the shape and specific structure of the limiting component 970. For example, a locking pin, a frame structure or a solid body component can be used. The general principle is that it should have at least sufficient mechanical strength and ensure a firm connection with the above components. The specific setting of the limiting component 970 is detailed in the specific description of the limiting component 970 below, which will not be expanded here.

[0436] The compressed interventional device 990 needs to be loaded into the tube. In order to support the tube, refer to the attached Fig.40 The present application discloses a bracket 980, which is used to support an interventional instrument 990 or a delivery system. The bracket 980 is mounted on the housing 910 or the base 960 and has a support position corresponding to the position of the instrument channel 9101. When the pipe is placed at the support position, the channel in the pipe is arranged relative to the instrument channel, so that the interventional instrument 990 can enter the channel in the pipe. The specific setting of the bracket 980 is described in detail below, which will not be expanded here.

[0437] Reference Fig.36 To Attachment Fig.40 The present application also provides a crimping device 9100, comprising:

[0438] A housing 910, wherein the housing 910 has an instrument channel 9101 therethrough;

[0439] The force blocks 920 are multiple and movably mounted in the housing 910. The force blocks 920 are distributed around the instrument channel 9101. The multiple force blocks 920 are in a relatively gathered state (for example Fig.38 state in each force applying block 920) or a separated state (e.g. Fig.39 The state of each force block 920 in the switching state, and the corresponding retractable instrument channel 9101 during the switching state;

[0440] The driving handle 951 is linked with the force applying block 920 to synchronously drive the multiple force applying blocks 920 to switch states;

[0441] The limiting component 970 includes a fixing portion 971 connected to the shell 910 and an adjusting portion 972 movably matched with the fixing portion 971 . The adjusting portion 972 is limited against the driving handle 951 moved to the extreme position and corresponds to the gathered state of the force block 920 .

[0442] When the interventional instrument 990 has not entered the instrument channel 9101, the multiple force blocks 920 are in a separated state. After the interventional instrument 990 enters the instrument channel 9101, the driving handle 951 drives the multiple force blocks 920 to gradually switch from the separated state to the gathered state. In the process of the multiple force blocks 920 switching states, the multiple force blocks 920 will shrink the instrument channel 9101, and the inner wall of the instrument channel 9101 squeezes the interventional instrument 990. The inner wall of the instrument channel 9101 will evenly reduce the size of the interventional instrument 990 until the driving handle 951 and the adjustment part 972 are against each other. At this time, the compression of the interventional instrument 990 by the crimping device 9100 is completed. When the gathered state of the force blocks 920 needs to be adjusted, the stroke of the driving handle 951 will change, and the position between the adjustment part 972 and the fixing part 971 can be adjusted at this time.

[0443] Reference Fig.40 And attached Fig.52 In this embodiment, the crimping device 9100 further includes a base 960, and the housing 910 is detachably mounted on the base 960. The fixing portion 971 of the position-limiting component 970 is mounted on the base 960. The crimping device 9100 is fixed to the support surface through the base 960. The crimping device 9100 has a bottom surface (e.g. Fig.52 A in ), and the top surface opposite to the bottom surface (e.g. Fig.52 B).

[0444] When the adjustment path of the limiting component 970 is not perpendicular to the bottom surface of the base 960, the force exerted by the driving handle 951 on the limiting component 970 will fall outside the connection position between the limiting component 970 and the base 960, thereby increasing the force at the connection position between the limiting component 970 and the base 960. In order to solve this technical problem, referring to one of the embodiments, in the use state, the bottom surface of the base 960 is the supporting surface, and the adjustment movement path of the limiting component 970 is arranged perpendicular to the supporting surface.

[0445] The limiting component 970 is made of a rod. A pipe can be used as the rod to reduce weight, but whether it is a pipe or a solid rod, it is for supporting purposes. Therefore, the rod in this article is not strictly limited to a solid or hollow structure. It can be a straight rod or partially curved according to its spatial direction. Similarly, the cross-sectional shape is not strictly limited.

[0446] In this embodiment, the limiting component 970 has a length direction, and the length of the limiting component 970 along its length direction is adjustable, so that the limiting component 970 can be quickly adjusted into place.

[0447] In order to make the structure of the limiting component 970 compact, in this embodiment, the fixing portion 971 and the adjusting portion 972 are plugged into each other and can slide together. The fixing portion 971 can be plugged into the inside of the adjusting portion 972, or the adjusting portion 972 can be plugged into the inside of the fixing portion 971, so as to reduce the length of the limiting component 970 in the radial direction.

[0448] Referring to one embodiment, one of the fixing portion 971 and the adjusting portion 972 is a tubular structure, and the other is disposed in the inner cavity of the tubular structure. The tubular structure has its own inner cavity, and the tubular structure not only has a certain supporting strength, but also has the effect of reducing weight.

[0449] In order to prevent the adjusting portion 972 from rotating in the inner cavity of the tubular structure, the fixing portion 971 is provided with a limiting groove along its own axis, and the adjusting portion 972 forms a limiting portion that matches the limiting groove by partially indenting itself;

[0450] And / or, the inner cavity of the fixing portion 971 and the radial cross-section of the adjusting portion 972 are both non-circular.

[0451] In this embodiment, the limiting component 970 further includes a locking mechanism 973 for maintaining the relative position of the fixing portion 971 and the adjusting portion 972. The locking mechanism 973 is used to fix the adjusting portion 972 to the fixing portion 971 and also to enable the adjusting portion 972 to move along the fixing portion 971, and various locking methods in the prior art can be used.

[0452] For the specific configuration of the locking mechanism 973, refer to the attached Fig.40 In this embodiment, the locking mechanism 973 includes a screw connection, which is disposed on one of the fixing portion 971 and the adjusting portion 972 and can abut against the other to maintain the relative position of the fixing portion 971 and the adjusting portion 972 .

[0453] The screw connection member includes a stud 9731 and an operating portion 9732 fixed to the end of the stud 9731. The fixing portion 971 is provided with a threaded hole 9733 connected to the inside of the fixing portion 971. The stud 9731 is screwed into the threaded hole 9733 and is controlled by the operating portion 9732. When the adjustment portion 972 moves to a preset setting, the operator holds and rotates the operating portion 9732 to screw the stud 9731 into the threaded hole 9733 until the end of the stud 9731 facing away from the operating portion 9732 abuts against the adjustment portion 972.

[0454] In this embodiment, one end of the adjusting portion 972 has a supporting groove 9721, and the supporting groove 9721 is used to limit the position of the driving handle 951. The supporting groove 9721 can increase the contact surface between the adjusting portion 972 and the driving handle 951. The supporting groove 9721 is generally U-shaped, and the opening of the U-shape faces the driving handle 951.

[0455] The method of driving the force block 920 can be combined with the above embodiments. For example, the driving handle 951 is linked with the force block 920 through the following components:

[0456] The gear ring 930 is rotatably matched with the housing 910, and the gear ring 930 synchronously drives the plurality of force blocks 920 to switch states, and the driving handle 951 is indirectly or directly connected to the gear ring 930;

[0457] Rack 941, fixed to each force applying block 920;

[0458] The transmission gear 942 is rotatably installed in the housing 910 , and each rack 941 is meshed with the gear ring 930 through one or more of the transmission gears 942 for transmission.

[0459] The ring gear 930 uses meshing transmission to synchronously drive multiple force blocks 920 to switch between a gathered state and a separated state. The meshing transmission method can improve the stability and accuracy of the ring gear 930 driving multiple force blocks 920. During the rotation of the ring gear 930, the rack 941 will be synchronously driven to move through the transmission gear 942 to drive the force block 920 to move. In the present application, the ring gear 930, the transmission gear 942 and the rack 941 use a meshing transmission method, which can enable the ring gear 930 to stably drive the force block 920 to move.

[0460] In this embodiment, the transmission gear 942 includes multiple sets, each set corresponding to a force block 920. The shapes of the transmission gears 942 are the same, which is convenient for mass production; during the installation of the transmission gear 942, there is no need to identify the type of the transmission gear 942, which simplifies the assembly method of the transmission gear 942.

[0461] Reference Fig.36 To Attachment Fig.40The present application also provides a crimping device 9100, comprising:

[0462] A housing 910, wherein the housing 910 has an instrument channel 9101 therethrough;

[0463] A force block 920, wherein the force blocks 920 are multiple and movably installed in the housing 910, and each force block 920 is distributed around the instrument channel 9101, and the multiple force blocks 920 have a relatively gathered state and a separated state, and the instrument channel 9101 is correspondingly retracted and released during the switching process;

[0464] The bracket 980 includes a supporting portion 983 and a supporting portion 984 which are connected to each other. The supporting portion 983 cooperates with the shell 910 , and the supporting portion 984 has a supporting position corresponding to the position of the instrument channel 9101 .

[0465] When the interventional instrument 990 has not entered the instrument channel 9101, the multiple force blocks 920 are in a separated state. After the interventional instrument 990 enters the instrument channel 9101, the multiple force blocks 920 are driven to gradually switch from a separated state to a gathered state. During the process of the multiple force blocks 920 switching states, the instrument channel 9101 will be contracted, and the inner wall of the instrument channel 9101 will squeeze the interventional instrument 990. The inner wall of the instrument channel 9101 will evenly reduce the size of the interventional instrument 990 until the compression of the interventional instrument 990 by the crimping device 9100 is completed.

[0466] After the crimping device 9100 has completed compressing the interventional instrument 990, it drives the multiple force blocks 920 to switch from the gathered state to the separated state, and then moves the interventional instrument 990 into the tube on the bracket 980. When the tube is placed in the supporting position, the channel in the tube is arranged opposite to the instrument channel, so that the interventional instrument 990 can enter the channel in the tube.

[0467] Reference Fig.40 And attached Fig.52 In this embodiment, the crimping device 9100 further includes a base 960, and the housing 910 can be detachably mounted on the base 960. The support portion 983 can also be plugged into the base 960. The crimping device 9100 is fixed to the support surface through the base 960. The crimping device 9100 has a bottom surface (e.g. Fig.52 A in ), and the top surface opposite to the bottom surface (e.g. Fig.52 B).

[0468] In this embodiment, a slot extending in a straight line is provided on the outer wall of the housing 910, and the support portion 983 is slidably fitted in the slot, so that the movement direction of the support portion 983 after being inserted into the slot is arranged in a straight line. In one embodiment, one end of the slot serves as an entrance end and is adjacent to the instrument channel 9101, and the other end of the slot extends toward the base 960.

[0469] In this embodiment, the extending direction of the slot is the radial direction of the instrument channel, and the slot entrance is aligned with the instrument channel 9101. When the crimping gripper 9100 is in use, the slot is located below the instrument channel 9101.

[0470] In this embodiment, the support portion 983 and the supporting portion 984 are integrally arranged to enhance the structural strength of the support portion 983 and the supporting portion 984 and reduce the process difficulty of the bracket 980. Of course, in other embodiments, the support portion 983 and the supporting portion 984 may also be separately arranged, and the support portion 983 and the supporting portion 984 may be fixed by bolts or welding.

[0471] In this embodiment, the support position extends along the direction of the instrument channel 9101 and forms a bearing bracket 981 that is connected to the instrument channel 9101. In order to facilitate observation of the pipe fittings at the support position and timely adjustment of the pipe fittings, referring to one embodiment, the top of the bracket 980 is a semi-cylinder structure with a U-shaped cross-section, the top surface of the semi-cylinder structure is open, and the interior serves as the bearing bracket 981.

[0472] In order to protect the outer side of the pipe body further clamped, refer to the attached Fig.40 In this embodiment, an elastic pad 982 is provided in the bearing bracket 981, and the elastic pad 982 is installed on the inner wall of the bearing bracket 981. The material of the elastic pad 982 is silicone. Of course, in some other embodiments, the inner wall of the bearing bracket 981 can also be made of silicone material, and the setting of the elastic pad 982 can be omitted.

[0473] For the fixing method of the elastic pad and the bearing bracket, please refer to the attached Fig.40 In this embodiment, the elastic pad 982 is installed in the bearing bracket 981 by means of snaps, bonding or fasteners, so as to facilitate the disassembly and assembly of the elastic pad 982 and the bearing bracket 981.

[0474] In this embodiment, one of the inner wall of the bearing bracket 981 and the elastic pad 982 is provided with a groove 9821, and the other is provided with a block 9811 that matches the groove 9821. Along the extension direction of the bearing bracket, a plurality of blocks 9811 and grooves 9821 are provided, and each block 9811 is respectively engaged in a corresponding groove 9821.

[0475] Reference Fig.40 In this embodiment, the support portion 983 is plate-shaped and is attached to the outer wall of the housing 910. Fig.40 In this embodiment, the support portion 983 has a length direction, one end of the support portion 983 along the length direction cooperates with the slot, and the other end is connected to the supporting portion 984.

[0476] In order to strengthen the connection strength between the semi-cylinder structure and the support part, in this embodiment, a reinforcing rib is fixed between the bottom of the semi-cylinder structure and the support part. The reinforcing rib is plate-shaped, and the extension direction of the semi-cylinder structure is perpendicular to the extension direction of the support part. When the reinforcing rib is located at the connection between the semi-cylinder structure and the support part, the two sides of the reinforcing rib plate are respectively fitted and fixed to the semi-cylinder structure and the support part.

[0477] The method of driving the force applying block 920 can be combined with the above embodiments, for example, the crimping device 9100 further includes:

[0478] The gear ring 930 is rotatably matched with the housing 910, and the gear ring 930 synchronously drives the plurality of force blocks 920 to switch states;

[0479] Rack 941, fixed to each force applying block 920;

[0480] The transmission gear 942 is rotatably installed in the housing 910 , and each rack 941 is meshed with the gear ring 930 through one or more of the transmission gears 942 for transmission.

[0481] The ring gear 930 uses meshing transmission to synchronously drive multiple force blocks 920 to switch between a gathered state and a separated state. The meshing transmission method can improve the stability and accuracy of the ring gear 930 driving multiple force blocks 920. During the rotation of the ring gear 930, the rack 941 will be synchronously driven to move through the transmission gear 942 to drive the force block 920 to move. In the present application, the ring gear 930, the transmission gear 942 and the rack 941 use a meshing transmission method, which can enable the ring gear 930 to stably drive the force block 920 to move.

[0482] In this embodiment, the transmission gear 942 includes multiple sets, each set corresponding to a force block 920. The shapes of the transmission gears 942 are the same, which is convenient for mass production; during the installation of the transmission gear 942, there is no need to identify the type of the transmission gear 942, which simplifies the assembly method of the transmission gear 942.

[0483] Reference Fig.36 To Attachment Fig.40 And attached Fig.53 To Attachment Fig.54 The present application also provides a crimping device 9100, comprising:

[0484] A housing 910, wherein the housing 910 has an instrument channel 9101 therethrough;

[0485] A force block 920, wherein the force blocks 920 are multiple and movably installed in the housing 910, and each force block 920 is distributed around the instrument channel 9101, and the multiple force blocks 920 have a relatively gathered state and a separated state, and the instrument channel 9101 is correspondingly retracted and released during the switching process;

[0486] The bracket 980 is detachably mounted on the housing 910 by magnetic attraction, and has a support position corresponding to the position of the instrument channel 9101.

[0487] In this embodiment, one of the bracket 980 and the housing 910 is provided with a magnetic member 985, and the other is provided with a matching member 986 that magnetically matches the magnetic member 985. One end of the bracket 980 facing the housing 910 is attached to the housing 910, and the magnetic member 985 is provided at the attachment surface of the bracket 980 and the housing 910. In this embodiment, the matching member 986 is a ferromagnetic material.

[0488] In order to make the bracket 980 more firmly fixed on the housing 910, in this embodiment, there are multiple magnetic members 985, and at least two magnetic members 985 are staggered in the circumferential direction of the instrument channel. Further, in this embodiment, the magnetic members 985 are arranged in sequence along the circumferential direction of the instrument channel.

[0489] In this embodiment, the end faces of the bracket 980 and the shell 910 that are in contact with each other both have mounting positions, and the magnetic member 985 and the matching member 986 are fixed at the corresponding mounting positions. In order to reduce the gap between the bracket 980 and the shell 910, referring to one of the embodiments, the mounting position is a groove structure, and the magnetic member 985 or the matching member 986 is embedded in the corresponding groove structure so that the end face of the bracket 980 can be in contact with the outside of the shell 910. In this embodiment, the support position extends along the direction of the instrument channel 9101, and forms a bearing bracket 981 that is opposite to the instrument channel 9101.

[0490] One of the magnetic component 985 and the matching component 986 protrudes from the mounting position, and the other is embedded in the bottom of the slot structure. The component protruding from the mounting position can extend into the corresponding slot structure and be attracted to the component located in the slot structure. In this embodiment, the magnetic component 985 is installed on the bracket 980, and the matching component 986 is installed on the shell 910. The magnetic component 985 protrudes from the end face of the bracket 980, and the matching component 986 is embedded in the bottom of the slot structure. When the bracket 980 is installed on the shell 910, the magnetic component 985 on the bracket 980 extends into the slot structure on the shell 910, and is magnetically attracted to the matching component 986 in the slot structure to fix the bracket 980 on the shell 910.

[0491] The specific configuration of the bracket 980 is described in detail in one embodiment. Fig.54 , bracket 980 includes:

[0492] A semi-cylindrical structure 989 with a U-shaped cross section, the top surface of which is open, and the interior serves as a bearing bracket 981;

[0493] A fitting portion 987 that is fixed to the housing 910 by magnetic attraction, and the fitting portion 987 is located at the periphery of the instrument channel 9101 and extends along the circumference of the instrument channel 9101;

[0494] The flared section 988 is fixedly connected between the semi-cylinder structure 989 and the fitting part 987 , and along the axial direction of the instrument channel, the small end of the flared section 988 is connected to the middle part of the semi-cylinder structure 989 , and the large end is connected to the fitting part 987 .

[0495] The cross section of the semi-cylinder structure 989 along the radial direction of the instrument channel is U-shaped; when the crimping gripper 9100 is in use, the opening of the U-shaped portion is set upward so that the top surface of the semi-cylinder structure 989 is open. The installation position is on the side of the fitting portion 987 facing the shell 910. Along the radial direction of the instrument channel, the size of the fitting portion 987 is greater than the wall thickness of the semi-cylinder structure 989 and the wall thickness of the flared section 988, so as to increase the contact surface between the bracket 980 and the shell 910. Referring to one of the embodiments, the central angle corresponding to the fitting portion 987 is 120 degrees to 180 degrees, and the fitting portion 987 is located in the lower half of the instrument channel 9101. The fitting portion 987 is plate-shaped, and the fitting portion 987 and the semi-cylinder structure 989 are integrally arranged.

[0496] The flared section 988 is semi-cylindrical, and the cross section of the flared section 988 along the radial direction of the instrument channel is U-shaped. The top of the flared section 988 is open when the crimping gripper 9100 is in use. Along the extension direction of the instrument channel, the channel in the flared section 988 gradually increases from the middle of the semi-cylindrical structure 989 toward the housing 910, so as to form a large end and a small end at both ends of the flared section 988.

[0497] The small end of the flared section 988 is arranged circumferentially around the semi-cylinder structure 989 and connected to the outer side wall of the semi-cylinder structure, and there is a certain gap between the large end of the flared section 988 and the semi-cylinder structure 989. The top surface of the semi-cylinder structure 989 is arranged substantially flush with the top surface of the flared section 988, so that part of the structure of the semi-cylinder structure 989 is located inside the flared section 988. Referring to one embodiment, along the radial direction of the instrument channel, the semi-cylinder structure 989 is located in the middle of the instrument channel 9101, and there is an avoidance gap between it and the fitting portion 987.

[0498] In order to protect the outer side of the pipe body further clamped, refer to the attached Fig.54In this embodiment, an elastic pad 982 is provided in the bearing bracket 981, and the elastic pad 982 is installed on the inner wall of the bearing bracket 981. The material of the elastic pad 982 is silicone. Of course, in some other embodiments, the inner wall of the bearing bracket 981 can also be made of silicone material, and the setting of the elastic pad 982 can be omitted.

[0499] For the fixing method of the elastic pad and the bearing bracket, please refer to the attached Fig.54 In this embodiment, the elastic pad 982 is installed in the bearing bracket 981 by means of snaps, bonding or fasteners, so as to facilitate the disassembly and assembly of the elastic pad 982 and the bearing bracket 981.

[0500] In this embodiment, one of the inner wall of the bearing bracket 981 and the elastic pad 982 is provided with a groove 9821, and the other is provided with a clamping block 9811 that matches the groove 9821. Along the extension direction of the bearing bracket 981, a plurality of clamping blocks 9811 and grooves 9821 are provided, and each clamping block 9811 is respectively clamped in a corresponding groove 9821.

[0501] The method of driving the force applying block 920 may be combined with the above embodiments. For example, the crimping device 9100 further includes:

[0502] The gear ring 930 is rotatably matched with the housing 910, and the gear ring 930 synchronously drives the plurality of force blocks 920 to switch states;

[0503] Rack 941, fixed to each force applying block 920;

[0504] The transmission gear 942 is rotatably installed in the housing 910 , and each rack 941 is meshed with the gear ring 930 through one or more of the transmission gears 942 for transmission.

[0505] The ring gear 930 uses meshing transmission to synchronously drive multiple force blocks 920 to switch between a gathered state and a separated state. The meshing transmission method can improve the stability and accuracy of the ring gear 930 driving multiple force blocks 920. During the rotation of the ring gear 930, the rack 941 will be synchronously driven to move through the transmission gear 942 to drive the force block 920 to move. In the present application, the ring gear 930, the transmission gear 942 and the rack 941 use a meshing transmission method, which can enable the ring gear 930 to stably drive the force block 920 to move.

[0506] In this embodiment, the transmission gear 942 includes multiple sets, each set corresponding to a force block 920. The shapes of the transmission gears 942 are the same, which is convenient for mass production; during the installation of the transmission gear 942, there is no need to identify the type of the transmission gear 942, which simplifies the assembly method of the transmission gear 942.

[0507] Reference Fig.55 To Attachment Fig.58 One embodiment of the present application further provides a method for loading an interventional device 990, comprising:

[0508] Provide a crimping device 9100 of each of the above embodiments;

[0509] Place the interventional instrument 990 in the instrument channel 9101;

[0510] The gear ring 930 is rotated to drive the plurality of force applying blocks 920 to synchronously move and compress the interventional instrument 990;

[0511] The compressed interventional instrument 990 is transferred into a tube for loading the interventional instrument 990 .

[0512] Before loading the interventional instrument 990: the tube is pre-installed at the bracket 980, and each force block 920 is in a separated state; after placing the interventional instrument 990 in the instrument channel 9101, pull the drive handle 951, and the drive handle 951 drives the gear ring 930 to rotate to drive the multiple force blocks 920 to switch to the retracted state. At this time, the multiple force blocks 920 move synchronously to compress the interventional instrument 990 until the interventional instrument 990 is compressed into place. After the interventional instrument 990 is compressed into place, push the interventional instrument 990 to transfer the compressed part of the interventional instrument 990 into the tube. In order to facilitate the loading of the interventional instrument 990 into the tube, refer to one of the embodiments, the tube is pre-positioned, and the position is aligned with the instrument channel 9101. The cavity of the tube is aligned with the instrument channel 9101.

[0513] Reference Fig.56 The interventional device 990 has no strict restrictions on the specific shape, for example, it may include a stent 991, with a connecting ear 992 at one axial end of the stent 991, and the connecting ear 992 may be provided with an expansion head at the end. The stent 991 is a radially compressible or expandable structure, generally a mesh tube structure formed by cutting or weaving. In this embodiment, the interventional device 990 is an artificial heart valve.

[0514] The interventional instrument 990 has an axial direction, and the radial dimensions of the various parts of the interventional instrument 990 along its own axial direction are different. Referring to one embodiment, when compressing the interventional instrument 990, a step-by-step compression method is adopted according to the radial dimensions of different positions of the interventional instrument 990. The interventional instrument 990 is divided into multiple sections according to different radial dimensions, and then the crimping device 9100 compresses each section of the interventional instrument 990 separately until the interventional instrument 990 can be loaded into the tube.

[0515] Reference Fig.56 To Attachment Fig.57In this embodiment, the interventional instrument 990 includes a first section 993 and a second section 994 along its axial direction, and the radial dimension of the first section 993 is greater than the radial dimension of the second section 994; the step-by-step compression method includes: a mandrel is inserted into the interventional instrument 990 to compress the radial dimension of the first section 993 to be approximately equal to the radial dimension of the second section 994. Among them, the axis of the first section 993 and the axis of the second section 994 are approximately consistent.

[0516] Before compressing the interventional instrument 990, the dry interventional instrument 990 needs to be moistened. The second section 994 of the interventional instrument 990 is clamped by a clamp, and the first section 993 is placed in the instrument channel 9101. The clamp abuts against the housing 910 to limit the position of the first section 993 in the instrument channel 9101, and then the interventional instrument 990 is adjusted so that the axis of the interventional instrument 990 is colinear with the axis of the instrument channel 9101, and finally the first section 993 is compressed. There is no strict restriction on the specific shape of the clamp, for example, the clamp is cylindrical, and the second section 994 of the interventional instrument 990 is placed inside the clamp.

[0517] The compressed interventional instrument 990 is removed from the fixture. In order to reduce the radial size of the interventional instrument 990, referring to one embodiment, the step-by-step compression method also includes: inserting a core rod into the interventional instrument, and then compressing the first section 993 and the second section 994 synchronously until the core rod fits. Before the interventional instrument 990 is compressed, a protective sleeve is placed on the outside of the interventional instrument 990, and the protective sleeve can prevent the crimping device 9100 from damaging the interventional instrument 990. There is no strict restriction on the specific shape of the core rod, for example, the core rod is cylindrical.

[0518] Reference Fig.58 In this embodiment, the compressed interventional device 990 is loaded into a delivery system 9103. The delivery system 9103 can be used to treat heart valves (e.g., mitral valve, aortic valve, tricuspid valve, vena cava valve, pulmonary valve). The treatment may include, but is not limited to, valve replacement, valve repair, or other surgery that affects valve function.

[0519] Reference Fig.58 In this embodiment, the delivery system 9103 includes two tubes coaxially arranged from the inside to the outside, and a control handle for driving the two tubes to move relative to each other. The distal end of each tube is used to cooperate with each other to operate the interventional instrument 990, and the proximal end of each tube is connected to the control handle, and the control handle uses hydraulics to drive the relative movement of each tube.

[0520] The present application uses hydraulic means at the control handle to drive each pipe fitting to realize the operation of the interventional instrument, such as release, cutting, rotation, grasping or recovery. The entire hydraulic system is configured at the proximal end, which is more convenient for on-site debugging or assembly. Even if unexpected conditions occur, they can be easily resolved in vitro. If the hydraulic mechanism is configured at the distal end, more stringent requirements will be placed on the size and safety of the equipment, and the movement form and direction that can be controlled will also be limited due to equipment problems.

[0521] The two pipes are respectively a first pipe 9104 and a second pipe 9105 which are slidably nested from the inside to the outside. The distal end of the first pipe 9104 is used to place the interventional instrument 990, and the second pipe 9105 is used to wrap or release the interventional instrument 990. The farthest end of the first pipe 9104 is a guide head 9106, and a mounting head 9107 is fixed near the proximal end of the guide head 9106. When the interventional instrument 990 is loaded, it is located between the guide head 9106 and the mounting head 9107 and is radially compressed. The interventional instrument 990 generally has a connecting ear 992 connected to the mounting head 9107. When loaded, the connecting ear 992 cooperates with the mounting head 9107 to limit the axial position of the interventional instrument 990.

[0522] In this embodiment, the first tube 9104 of the delivery system 9103 is inserted into the interventional instrument 990, the interventional instrument 990 is compressed to fit the first tube 9104, and the compressed interventional instrument 990 is pushed into the second tube 9105 of the delivery system 9103. After the interventional instrument 990 is assembled on the first tube 9104, the second tube 9105 is placed on the bracket 980, and the interventional instrument 990 is compressed to a preset size, the control handle drives the first tube 9104 to slide axially relative to the second tube 9105 and withdraw, so that the interventional instrument 990 is placed in the second tube 9105. When compressing the interventional instrument 990, the interventional instrument 990 can be checked after being compressed for a period of time (e.g., 10 seconds).

[0523] The first tube 9104 and the second tube 9105 are plastic tubes or metal tubes commonly used in the field of interventional instruments 990, such as cut hypotubes or metal braided tubes or a mixture of metal braided tubes and hypotubes. The first tube 9104 and / or the second tube 9105 can also be multi-layer composite tubes.

[0524] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. When the technical features in different embodiments are embodied in the same figure, it can be regarded that the figure also discloses the combination examples of the various embodiments involved.

[0525] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A crimping device for compressing an interventional device, characterized in that: include: A housing having an instrument channel extending therethrough; A force-applying block, wherein the force-applying blocks are in a plurality and are movably mounted in the housing, the force-applying blocks are distributed around the instrument channel, the plurality of force-applying blocks have a relatively gathered state and a separated state, and the instrument channel is correspondingly retracted and released during the switching process; A gear ring is rotatably matched with the housing, and the gear ring synchronously drives a plurality of force applying blocks to switch states.

2. The compression gripper for compressing an interventional instrument according to claim 1, characterized in that: The crimping device further comprises a transmission mechanism, and the transmission mechanism is transmission-connected between the gear ring and each force-applying block.

3. The compression gripper for compressing an interventional instrument according to claim 1, characterized in that: The rotation axis of the gear ring is parallel to the extension direction of the instrument channel.

4. The crimping device for compressing an interventional instrument according to claim 1, characterized in that: The gear ring includes an annular portion, and driving teeth distributed on the annular portion and drivingly matched with the force applying block, and the driving teeth are arranged in at least one of the following ways: The driving teeth are internal teeth distributed on the inner edge of the annular portion; The driving teeth are external teeth distributed on the outer edge of the annular portion; The driving teeth are side teeth distributed on the axial end surface of the annular portion.

5. The crimping device for compressing an interventional instrument as claimed in claim 4, characterized in that: The number of the driving teeth is an integer multiple of the number of the force applying blocks.

6. The crimping device for compressing an interventional instrument according to claim 5, characterized in that: The number of the driving teeth is 8 times the number of the force applying blocks.

7. The crimping device for compressing an interventional instrument according to claim 1, characterized in that: The gear ring comprises an annular portion, and a plurality of weight-reducing grooves are formed on the annular portion along the circumference of the gear ring.

8. The crimping device for compressing an interventional instrument according to claim 1, characterized in that: The gear ring surrounds the periphery of a plurality of force applying blocks.

9. The crimping device for compressing an interventional instrument according to claim 1, characterized in that: The interventional device is an artificial heart valve.

10. A method for loading an interventional device, characterized in that: include: A crimping device is provided, the crimping device comprising: A housing having an instrument channel extending therethrough; A force-applying block, wherein the force-applying blocks are in a plurality and are movably mounted in the housing, the force-applying blocks are distributed around the instrument channel, the plurality of force-applying blocks have a relatively gathered state and a separated state, and the instrument channel is correspondingly retracted and released during the switching process; A gear ring, the gear ring is rotatably matched with the housing, and the gear ring synchronously drives a plurality of force blocks to switch states; placing an interventional instrument in the instrument channel; The gear ring is rotated, and the gear ring drives a plurality of force applying blocks to move synchronously to compress the interventional instrument; The compressed interventional device is transferred into a tube for loading the interventional device.

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