CN219353996U - Control handle and conveying system - Google Patents

Abstract

The utility model provides a control handle which comprises a shell, a tightening block, a tightening ring and a guide rod, wherein the proximal end of the guide rod penetrates through the distal end of the shell to enter the interior of the shell, the guide rod can axially move relative to the shell, the tightening ring and the tightening block are movably sleeved on the guide rod, the tightening block and the tightening ring are accommodated in the shell, and when the tightening block is pressed against the tightening ring, the guide rod is static relative to the shell. The utility model also provides a conveying system comprising the control handle, wherein the conveying system comprises a sleeve structure, the sleeve structure is fixedly connected with the distal end of the guide rod, when the guide rod is fixed relative to the main body, the sleeve structure is fixed relative to the control handle, and when the main body can move relative to the guide rod, the main body can move relative to the sleeve structure. According to the utility model, through the elastic ring, the abutting block and the guide rod, the independent movement or the integral movement between the control handle and the sleeve structure is realized, and the practicality, the convenience and the flexibility of the whole product are improved.

Description

Control handle and conveying system

Technical Field

The utility model belongs to the field of medical instruments, and particularly relates to a control handle and a conveying system.

Background

The traditional chest opening treatment has large risk and can not be tolerated by high-risk patients. In recent years, the intervention treatment brings hope to the patient, and the intervention treatment generally refers to the minimally invasive treatment by introducing a specific instrument into a lesion part of a human body through a natural duct or a tiny wound of the human body. Due to the complex structure of the human body, the position, angle, direction and the like of the conveyed instrument are usually required to be adjusted in the conveying process. However, the existing conveyor handle has relatively single function and cannot be linked with other handles, so that the operation difficulty and the operation time of a doctor are greatly increased.

Disclosure of Invention

The utility model aims to provide a control handle and a conveying system, which aim to solve the technical problems that synchronous rotation and independent rotation among a plurality of sheaths and axial movement and fixation among the plurality of sheaths cannot be realized by the conveying system in the prior art.

The utility model provides a control handle for solving the technical problems, which comprises a shell, a tightening block, a tightening ring and a guide rod, wherein the proximal end of the guide rod penetrates through the distal end of the shell to enter the shell, the guide rod can axially move relative to the shell, the tightening ring and the tightening block are movably sleeved on the guide rod, the tightening block and the tightening ring are contained in the shell, the tightening ring is closer to the distal end of the shell relative to the tightening block, and when the tightening block is in tightening with the tightening ring, the guide rod is static relative to the shell.

In some embodiments of the present utility model, the housing includes a main body and a distal end cover disposed at a distal end of the main body, and the distal end cover is movable relative to the main body to drive the abutting block to approach or separate from the elastic ring.

In some embodiments of the utility model, the proximal end of the guide rod passes through the distal cover and enters the housing, and the distal cover can only rotate around the longitudinal central axis of the housing relative to the main body, the distal cover is in threaded fit with the abutting block, and when the distal cover rotates relative to the main body, the distal cover drives the abutting block to move towards or away from the elastic ring.

In some embodiments of the present utility model, the distal end cover is provided with a knob portion and a mating portion, the knob portion is further away from the proximal end of the control handle than the mating portion, the mating portion is mounted on the main body, the mating portion is provided with a first clamping portion, the main body is provided with a second clamping portion, and the first clamping portion is mated with the second clamping portion.

In some embodiments of the present utility model, the control handle further includes an anti-rotation gasket and/or a pressure gasket, wherein the anti-rotation gasket and/or the pressure gasket are/is sleeved on the guide rod, the anti-rotation gasket is disposed at one side of the elastic ring away from the tight block, and the pressure gasket is disposed between the elastic ring and the tight block.

In some embodiments of the present utility model, a plurality of gripping structures are disposed at one end of the abutting block near the elastic ring, the ends of the gripping structures near the elastic ring incline towards the guide rod to form a shrinkage structure, when the distal end cover rotates to drive the abutting block to move towards the direction near the elastic ring, the shrinkage structure abuts against the elastic ring, and the shrinkage structure enters a gap between the elastic ring and the guide rod, and the gripping structures are extruded and radially fit with the guide rod to fix the guide rod relative to the main body.

In some embodiments of the utility model, the distal cap is axially movable relative to the body only along a longitudinal central axis of the housing.

In some embodiments of the present utility model, the main body further includes a key device and an elastic member, the key device includes a stopper, and the distal end cap is provided with an end cap elastic stopper; when the distal end cover moves in a direction approaching the elastic ring, the stop part and the end cover elastic stop part are mutually abutted, the elastic piece is compressed, the elastic ring is pressed by the abutting block, and the elastic ring is pressed and radially attached to the guide rod, so that the guide rod is static relative to the main body.

In some embodiments of the utility model, the distal end cap is disposed on a side wall in the circumferential direction of the body, and the distal end cap moves relative to the body only in a direction perpendicular to the longitudinal center axis of the housing.

In some embodiments of the present utility model, the main body further includes a key device and an elastic member, the key device includes a stopper, and the distal end cap is provided with an end cap elastic stopper; when the distal end cover moves in a direction approaching the elastic ring, the stop part and the end cover elastic stop part are mutually abutted, the elastic piece is compressed, the elastic ring is pressed by the abutting block, and the elastic ring is pressed and radially attached to the guide rod, so that the guide rod is static relative to the main body.

The present utility model provides a conveying system, which comprises a control handle according to any one of the above technical problems, wherein the conveying system comprises a sleeve structure, the sleeve structure is fixedly connected with the distal end of the guide rod, when the guide rod is fixed relative to the shell, the sleeve structure is fixed relative to the control handle, and when the shell can move relative to the guide rod, the shell can move relative to the sleeve structure.

The beneficial effects of the utility model are as follows: according to the utility model, through the elastic ring, the abutting block and the guide rod, the independent movement or the integral movement between the control handle and the sleeve structure is realized, so that the practicality, convenience and flexibility of the whole product are improved. When the guide rod is locked, the control handle and the sleeve structure can only move integrally. After the guide rod is unlocked, the control handle and the sleeve structure can be independently rotated, and the main body can also axially move along the guide rod relative to the sleeve structure, so that the operation flexibility of the conveying system is improved, and the operation difficulty of a doctor is greatly reduced.

Drawings

Fig. 1 is a schematic structural view of a control handle according to a first embodiment of the present utility model.

Fig. 2 is an exploded view of a control handle according to a first embodiment of the present utility model.

Fig. 3 is a schematic axial sectional view of a control handle according to a first embodiment of the present utility model.

Fig. 4 is a schematic axial sectional view of a distal cap of a control handle according to a first embodiment of the present utility model.

Fig. 5 is a schematic view of a distal end cap and a tightening block according to another embodiment of the present utility model.

Fig. 6 is a schematic structural view of a control handle according to a second embodiment of the present utility model.

Fig. 7 is an exploded view of a control handle according to a second embodiment of the present utility model.

Fig. 8 is an enlarged view at a in fig. 7.

Fig. 9 is a schematic perspective view of a distal cap and a locking member of a control handle according to a second embodiment of the present utility model.

Fig. 10 is a schematic axial sectional view of a control handle according to a second embodiment of the present utility model.

Fig. 11 is a schematic sectional view showing a locked state of a control handle according to a third embodiment of the present utility model.

Fig. 12 is an enlarged view at B in fig. 11.

Fig. 13 is a schematic cross-sectional view showing an initial state of a control handle according to a third embodiment of the present utility model.

Fig. 14 is a schematic cross-sectional view showing an unlocked state of a control handle according to a third embodiment of the present utility model.

Fig. 15 is a schematic view showing an internal structure of a locking state of a control handle according to a fourth embodiment of the present utility model.

Fig. 16 is a schematic structural view showing a locking state of a key device and a distal cover of a control handle according to a fourth embodiment of the present utility model.

Fig. 17 is a schematic view of a distal end cover of a control handle according to a fourth embodiment of the present utility model.

Fig. 18 is a schematic view showing an internal structure of a control handle in an unlocked state according to a fourth embodiment of the present utility model.

Fig. 19 is a schematic structural view of a conveying system according to a fifth embodiment of the present utility model.

The attached drawings are used for identifying and describing:

10. a control handle; 100. a housing; 101. a main body; 102. a tightening block; 103. an elastic ring; 104. a distal cap; 105. a guide rod; 1040. a hollow cavity; 1041. a knob portion; 1042. a mating portion; 1043. a first clamping part; 1044. distal cap threads; 1011. a second clamping part; 1021. a slider thread; 1045. a first ramp structure; 1022. a second ramp structure; 106. an anti-rotation washer; 107. a pressure washer; 20. a control handle; 200. a housing; 201. a main body; 202. a tightening block; 203. an elastic ring; 204. a distal cap; 205. a guide rod; 2021. a grip claw structure; 2022. a contracted structure; 2023. a groove; 2024. a through groove; 2025. a short through groove; 2026. a long through groove; 2041. a knob portion; 2042. a mating portion; 2043. a mating groove; 2011. a locking member; 2012. a locking lever; 2013. a main body portion; 2014. an accommodating hole; 30. a control handle; 300. a housing; 301. a main body; 302. a tightening block; 303. an elastic ring; 304. a distal cap; 305. a guide rod; 3011. a key device; 3012. a key section; 3013. a stop portion; 3014. a rotating shaft; 3015. an elastic member; 3016. reinforcing ribs; 3017. an end cap spring stopping part; 3013a, a circular arc segment; 3017a, a rod body; 3017b, barb portions; 40. a control handle; 400. a housing; 401. a main body; 402. a tightening block; 403. an elastic ring; 404. a distal cap; 405. a guide rod; 4010. a connecting rod; 4011. a key device; 4012. a key section; 4013. a rotating shaft; 4014. a stop portion; 4015. an elastic member; 4017. an end cap spring stopping part; 4017b, barb portion; 4041. an abutting portion; 4042. a pressing part; 4043. a first ramp structure; 4021. a second ramp structure; 4044. avoidance of gaps; 4016. reinforcing ribs; 50. a conveying system; 501. a sleeve structure; 502. a control handle; 503. a guide rod; 504. a main body.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment. It should be noted that, in this embodiment, terms of left, right, up, down, etc. are merely relative concepts or references to normal use states of the product, and should not be construed as limiting.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

In addition, in the field of interventional medical devices, "distal" is defined as the end of the procedure that is distal to the operator, and "proximal" is defined as the end of the procedure that is proximal to the operator. "axial" refers to a direction parallel to the line connecting the distal center and the proximal center of the medical device, and "radial" refers to a direction perpendicular to the axial direction described above, and defines the "axial" and "radial" of any component of the medical device in accordance with this principle.

Example 1

Referring to fig. 1 and 2, a first embodiment of the present utility model provides a control handle 10, where the control handle 10 is a handle for delivering articles, such as a pusher for delivering mitral valve clips in the field of medical devices, and may also be used in a stent-delivering device, a valve-delivering device, or the like. The embodiment of the utility model takes a mitral valve clamping system as an example for detailed description. The control handle 10 comprises a housing 100, a tightening block 102, an elastic ring 103 and a guide rod 105, wherein the proximal end of the guide rod 105 penetrates through the distal end of the housing 100 to enter the housing 100, the guide rod 105 can axially move relative to the housing 100, the elastic ring 103 and the tightening block 102 are movably sleeved on the guide rod 105, and the tightening block 102 and the elastic ring 103 are accommodated in the housing 100. Specifically, the housing 100 includes a main body 101 and a distal cover 104 disposed at a distal end of the main body 101. The main body 101 is a holding portion of the control handle 10, the distal end cover 104 is used for controlling the movement of the abutting block 102, the elastic ring 103 is used for generating deformation after being pressed by the abutting block 102, the elastic ring 103 after deformation is attached to the guide rod 105, and the guide rod 105 is mainly used for connecting other devices, such as connecting an adjustable bending sleeve, etc. The proximal end of the guide rod 105 passes through the distal end of the body 101 into the interior of the body 101, and the body 101 is movable relative to the guide rod 105, i.e., the body 101 can translate or rotate relative to the guide rod 105. The distal end cover 104, the abutting block 102 and the elastic ring 103 are movably sleeved on the guide rod, namely, gaps exist among the distal end cover 104, the abutting block 102, the elastic ring 103 and the guide rod 105. And distal end lid 104 sets up the distal end tip of main part 101, support tight piece 102 and elastic ring 103 are all accomodate in distal end lid 104, support tight piece 102 with distal end lid 104 cooperation, elastic ring 103 with support tight piece 102 interval setting, distal end lid 104 motion drives support tight piece 102 to be close to or keep away from the direction of elastic ring 103.

It will be appreciated that in the first embodiment of the present utility model, the guide rod 105 has a cylindrical structure, and the distal end cover 104 and the end of the abutting block 102 near the elastic ring 103 have a circular ring structure. And the distal end cover 104 is a hollow knob structure, and the abutting block 102 and the elastic ring 103 are both accommodated in the hollow cavity 1040 of the distal end cover 104. The elastic ring 103 is in a circular ring structure in a circular truncated cone shape, and the circular truncated cone shape can facilitate the elastic ring 103 to deform radially after being stressed axially. The abutting block 102 is made of hard material, and the elastic ring 103 is made of elastic material, such as silica gel. When the distal end cover 104 moves to drive the abutting block 102 to move along the axial direction of the guide rod 105 towards the direction close to the elastic ring 103, and the abutting block 102 presses the elastic ring 103, the elastic ring 103 is pressed in the axial direction to reduce the axial length of the elastic ring 103, and at the moment, the radial length of the elastic ring 103 is prolonged, so that the diameter of an inner hole of the circular ring-shaped elastic ring 103 is reduced, and the elastic ring 103 is further radially attached to the guide rod 105. Since the distal end cover 104 is connected with the main body 101, and the elastic ring 103 and the abutting block 102 are both located in the distal end cover 104, after the elastic ring 103 radially abuts against the guide rod 105, the guide rod 105 is locked, so that the guide rod 105 cannot move relative to the main body 101, that is, the guide rod 105 and the main body 101 can only move in unison. At this time, the distal end cover 104 is moved to drive the abutting block 102 to move along the guide rod 105 in the axial direction away from the elastic ring 103, and the abutting block 102 will not press the elastic ring 103. Since the elastic ring 103 is made of elastic material, the elastic ring 103 will return to its original shape, i.e. a gap exists between the elastic ring 103 and the guide rod 105, and at this time, the lock between the guide rod 105 and the main body 101 is released, and the main body 101 can move relative to the guide rod 105. The utility model realizes the independent movement or the integral movement between the control handle 10 and the guide rod 105 through locking or unlocking between the elastic ring 103 and the guide rod 105. The guide rod 105 can be connected with other components, namely, the control handle 10 can realize independent movement or integral movement with other components. And further the practicality, convenience and flexibility of the whole product are improved. For example, in a mitral valve clamping system, the control handle 10 is a pusher and the guide rod 105 is connected to an adjustable curved cannula. The pusher and the adjustable bend sleeve can only move integrally when the guide rod 105 is locked by the elastic ring 103. After the guide rod 105 is unlocked, the pusher and the adjustable curved sleeve can rotate independently, and the pusher can also axially move along the guide rod relative to the adjustable curved sleeve, so that the flexibility of operation of the mitral valve clamping system is improved, and the operation difficulty of a doctor is greatly reduced.

Referring to fig. 2 and 3, in the first embodiment of the present utility model, the distal end cover 104 can only rotate around the longitudinal central axis of the housing 100 relative to the main body 101, the distal end cover 104 is provided with a knob portion 1041 and an engaging portion 1042, and the hollow cavity 1040 penetrates the knob portion 1041 and the engaging portion 1042. The engaging portion 1042 engages with a distal end portion of the main body 101 and is received in the main body 101, and the knob portion 1041 is exposed to the main body. The engaging portion 1042 engages the distal end of the body 101 with the distal cap 104, and the knob portion 1041 is provided for a user to rotate the distal cap 104. Specifically, a first locking portion 1043 is disposed on the outer surface of the mating portion 1042, and the first locking portion 1043 is a protrusion protruding from the outer surface of the mating portion 1042. A second clamping portion 1011 is disposed in the distal end portion of the main body 101, the second clamping portion 1011 is of a groove structure, and the first clamping portion 1043 is matched with the second clamping portion 1011, that is, the protrusion is matched with the groove structure in a clamping manner, so as to connect the distal end cover 104 with the distal end portion of the main body 101.

In other embodiments of the present utility model, the first locking portion 1043 may be a groove structure, and the second locking portion 1011 may be a protrusion. Or the first clamping portion 1043 and the second clamping portion 1011 are made of magnetic materials, and the first clamping portion 1043 and the second clamping portion 1011 are matched by magnetic attraction.

Further, referring to fig. 2-4, the inner wall of the distal cap 104 is provided with distal cap threads 1044, that is, the surface of the hollow cavity 1040 of the distal cap 104 is provided with distal cap threads 1044. The outer surface of the abutting block 102 is provided with a slider thread 1021, the distal end cover thread 1044 is matched with the slider thread 1021, and the distal end cover 104 is rotated to drive the abutting block 102 to axially move along the guide rod 105. Specifically, since the first locking portion 1043 is engaged with the second locking portion 1011, the distal end cover 104 is not axially movable relative to the main body, and thus the distal end cover 104 is rotated to drive the abutting block 102 to axially move along the guide rod 105. By rotating the knob portion 1041 of the distal cap 104, the distal cap 104 is rotated integrally, and the distal cap 104 rotates to drive the abutting block 102 engaged with the distal cap thread 1044 to axially move in the hollow cavity 1040.

Referring to fig. 4 and 5, the control handle 10 further includes an anti-rotation washer 106 and a pressure washer 107, the anti-rotation washer 106 and the pressure washer 107 are both sleeved on the guide rod 105, the anti-rotation washer 106 is disposed on a side of the elastic ring 103 away from the abutting block 102, and the pressure washer 107 is disposed between the elastic ring 103 and the abutting block 102. The anti-rotation washer 106 and the pressure washer 107 are received within the hollow cavity 1040 of the distal cap 104. Specifically, the anti-rotation gasket 106 and the pressure gasket 107 are ring-shaped structures, and the anti-rotation gasket 106 and the pressure gasket 107 are made of hard materials. When the abutting block 102 moves towards the elastic ring 103, the abutting block 102 contacts the pressure washer 107, then abuts against the pressure washer 107 and drives the pressure washer 107 to move towards the elastic ring 103, then the pressure washer 107 contacts the elastic ring 103, the abutting block 102 continues to move and then drives the pressure washer 107 and the elastic ring 103 to move towards the anti-rotation washer 106 until one surface of the anti-rotation washer 106 away from the elastic ring 103 abuts against the hollow cavity 1040, and then the anti-rotation washer 106, the elastic ring 103, the pressure washer 107 and the abutting block 102 are mutually pressed, and the elastic ring 103 generates radial deformation to be attached to the guide rod 105 and then locks the guide rod 105.

Further, when the anti-rotation washer 106 is not in contact with the elastic ring 103, the anti-rotation washer 106 disposed on the side of the elastic ring 103 away from the abutting block 102 can prevent the distal end cover 104 from driving the elastic ring 103 to rotate together when the distal end cover 104 rotates, thereby preventing the elastic ring 103 from being damaged due to friction between the rotation of the elastic ring 103 and the guide rod 105 or the cavity wall of the hollow cavity 1040. When the anti-rotation washer 106, the elastic ring 103, the pressure washer 107 and the pressing block 102 are in contact with each other and not yet pressed against each other, the distal end cover 104 needs to be continuously rotated at this time, and rotating the distal end cover 104 at this time drives the anti-rotation washer 106, the elastic ring 103 and the pressure washer 107 to rotate together. If the pressure washer 107 is omitted, the abutting block 102 that can only perform axial movement directly presses the elastic ring 103, and after the abutting block 102 that performs axial movement presses the elastic ring 103 that rotates circumferentially, the elastic ring 103 will be twisted, so that the elastic ring 103 is prone to fatigue failure. And after the pressure washer 107 is arranged, the abutting block 102 will be in contact with the pressure washer 107 of hard material, and the pressure washer 107 will follow the rotation of the elastic ring 103. In this embodiment, the surface of the pressure washer 107 near the elastic ring 103 is a plane, and the plane is perpendicular to the longitudinal central axis of the guide rod 105, so that the extrusion force applied to the elastic ring 103 will be more uniform, and the deformation of the elastic ring 103 will be more uniform, thus greatly reducing the possibility of twisting the elastic ring 103 and reducing the probability of fatigue failure. In addition, since the movement of the distal end cover 104 is a rotational movement, in order to prevent the elastic ring 103 from turning after locking the guide rod 105, in the first embodiment of the present utility model, the anti-turning washer 106, the elastic ring 103 and the pressure washer 107 are all in a circular ring structure.

Example two

Referring to fig. 6-8, a second embodiment of the present utility model provides a control handle 20, which includes a housing 200 having a main body 201 and a distal end cover 204, a tightening block 202, an elastic ring 203, and a guide rod 205, wherein the difference between the second embodiment and the first embodiment is: the control handle 20 does not have an anti-rotation washer and a pressure washer. The end of the abutting block 202 near the elastic ring 203 is provided with a plurality of grip claw structures 2021, and the end of the grip claw structures 2021 near the elastic ring 203 is inclined towards the guide rod 205 to form a contraction structure 2022, i.e. the contraction structure 2022 is a slope structure facing to the distal end. A groove 2023 is provided on a surface of the grip structure 2021 adjacent to the guide rod 205, and by providing the groove 2023, deformability of the grip structure 2021 is improved. A through groove 2024 is disposed between two adjacent gripping structures 2021, and the through groove 2024 includes a short through groove 2025 and a long through groove 2026, and two adjacent through grooves 2024 are a short through groove 2025 and a long through groove 2026.

Specifically, the distal end cap 204 rotates to drive the abutting block 202 to move in a direction approaching to the elastic ring 203, when the shrinkage structure 2022 abuts against the elastic ring 203, the distal end cap 204 continues to rotate, the shrinkage structure 2022 enters a gap between the elastic ring 203 and the guide rod 205, and the elastic ring 203 is gradually sleeved on the shrinkage structure 2022 due to the slope structure of the shrinkage structure 2022 facing to the distal end, at this time, the elastic ring 203 will press the plurality of grip structures 2021, the plurality of grip structures 2021 are contracted towards the guide rod 205, and the plurality of grip structures 2021 radially adhere to the guide rod 205 after being shrunk, so that the guide rod 205 is fixed relative to the main body 201.

Further, in order to ensure the strength of the grip structure 2021, to avoid the breakage of the grip structure 2021, and to avoid that the grip structure 2021 is too strong to shrink and cannot adhere to the guide rod 205, in the second embodiment of the present utility model, the number of the grip structures 2021 is set to 8. The 8 grip claw structures 2021 are circumferentially spaced apart at one end of the abutting block 202 near the elastic ring 203. It will be appreciated that if the number of grip structures 2021 is greater than 8, the circumferential length of the grip structure 2021 alone will be too small, which will result in too low a strength of the grip structure 2021 and a fracture will be likely to occur. If the number of the gripper structures 2021 is less than 8, the strength of the gripper structures 2021 is too high, so that the gripper structures 2021 are not easy to deform and shrink, and cannot adhere to the guide rod 205.

The grip structure 2021 may be integrally formed with the tightening block 202, or the grip structure 2021 may be formed by cutting and polishing the tightening block 202. The grip structure 2021 may also be made separately from the tightening block 202, and the grip structure 2021 is connected to the tightening block 202 by means of glue adhesion, snap connection, threaded connection, etc.

In other embodiments of the present utility model, the guide rods 205 with different sizes may be correspondingly arranged according to the objects to be conveyed, so as to correspondingly arrange the size of the abutting blocks 202 and the number of the gripper structures 2021.

In the second embodiment of the present utility model, two grooves 2023 are disposed on a surface of each gripper structure 2021 adjacent to the guide rod 205 at intervals, and by virtue of the arrangement of the grooves 2023, the deformability of the gripper structures 2021 is improved, so that the deformability of the gripper structures 2021 is prevented from being too low, and the gripper structures 2021 are prevented from breaking after being extruded by the elastic ring 203. While also allowing the grip structure 2021 to better conform to the guide 205. A through groove 2024 is disposed between two adjacent gripper structures 2021, that is, the two adjacent gripper structures 2021 are disposed at intervals through the through groove 2024. At the same time, the provision of the through grooves 2024 ensures that the grip pawl structure 2021 is retractable. Further, two adjacent through grooves 2024 are a short through groove 2025 and a long through groove 2026. That is, the short through grooves 2025 and the long through grooves 2026 are alternately arranged in the circumferential direction of the end of the abutting block 202 near the elastic ring 203. The deformability of the entire plurality of grip structures 2021 is not excessively large or small by alternately arranging a short through groove 2025 and a long through groove 2026. If all the through grooves 2024 are the short through grooves 2025, the deformability of the entire plurality of grip structures 2021 is too small, and the grip structures 2021 cannot be contracted to attach to the guide rod 205. If all the through grooves 2024 are the long through grooves 2026, the deformability of the entire plurality of grip structures 2021 is too large, and the grip structures 2021 cannot be tightly attached to the guide rod 205, so that the guide rod 205 cannot be locked. Meanwhile, the short through grooves 2025 and the long through grooves 2026 are alternately arranged, so that the overall deformability uniformity of the plurality of gripper structures 2021 can be ensured, the gripper structures 2021 on one side are prevented from being strong in deformability, the gripper structures 2021 on one side are prevented from being weak in deformability, and the gripper structures 2021 cannot be tightly attached to the guide rod 205.

In other embodiments of the present utility model, the number of grooves 2023 provided on the side of each grip structure 2021 adjacent to the guide 205 may be 1 or 3, etc. Two short through grooves 2025 and two long through grooves 2026 may be alternately arranged in the circumferential direction of the end of the abutting block 202 near the elastic ring 203.

Referring to fig. 7, 9 and 10, in a second embodiment of the present utility model, a way to match the distal end of the main body 201 with the distal end cover 204 is also provided. Specifically, the main body 201 includes a locking member 2011, and the locking member 2011 includes a main body 2013 having a circular ring structure and two locking bars 2012 disposed inside the main body 2013. The body portion 2013 may be secured within the distal end of the body 201 by a snap fit, threaded connection, or the like. Two receiving holes 2014 penetrating the side wall of the main body 2013 are formed on the side wall of the main body 2013, for receiving one locking rod 2012 respectively. One end of the lock lever 2012 enters the inside of the main body 2013 from one receiving hole 2014 of the main body 2013 and the lock lever 2012 is erected on the inner wall of the main body 2013. The distal end cover 204 is provided with a knob portion 2041 and an engaging portion 2042 as in the distal end cover of the first embodiment, and an engaging groove 2043 is provided on the outer surface of the engaging portion 2042 of the distal end cover 204. After the locking member 2011 is sleeved on the matching portion 2042, the locking rod 2012 is inserted into the locking member 2011, meanwhile, a portion of the locking rod 2012 located inside the main body 2013 is accommodated in the matching groove 2043, the locking rod 2012 is matched with the matching groove 2043 to achieve limiting, further, the distal end cover 204 is matched with the distal end portion of the main body 201, and the distal end cover 204 is fixed on the distal end portion of the main body 201.

In other embodiments of the present utility model, the locking lever 2012 may be omitted, and a protrusion (not shown) is disposed on the inner surface of the locking member 2011, and the protrusion may be formed integrally with the locking member 2011, or may be formed separately, and disposed on the inner surface of the locking member 2011 by glue adhesion, snap fit, embedding, or the like, for example, a silicone strip is disposed on the inner surface of the locking member 2011 by glue adhesion or embedding. The distal end cap 204 is further coupled to the distal end of the main body 201 by engagement of the protrusions with the engagement grooves 2043.

In other embodiments of the present utility model, the number of the receiving holes 2014 may be 4, and four receiving holes 2014 may be disposed in two opposite directions, that is, one locking bar 2012 may be received in two opposite receiving holes 2014. At this time, both ends of the lock lever 2012 are respectively received in two opposite receiving holes 2014, and a middle portion of the lock lever 2012 is erected on an inner wall of the main body 2013.

Example III

Referring to fig. 11 and 12, a third embodiment of the present utility model provides a control handle 30, which includes a housing 300 having a main body 301 and a distal end cover 304, a tightening block 302, an elastic ring 303, and a guide rod 305. The main difference between the third embodiment of the present utility model and the second embodiment and the first embodiment is that: the distal end cap 304 moves axially along the longitudinal central axis of the housing 300 only with respect to the main body 301, and when the distal end cap 304 moves axially with respect to the main body 301, the abutting block 302 is driven to move in a direction approaching or separating from the elastic ring 303. In the first and second embodiments of the present utility model, the distal cover is a knob switch, and the relative movement or the relative fixation between the guide rod and the main body is achieved by rotating the distal cover. In the third embodiment of the present utility model, the distal cover 304 is a push button switch, and the relative movement or relative fixation between the guide rod 305 and the main body 301 is achieved by pressing the distal cover 304.

Specifically, the main body 301 further includes a key device 3011, and the key device 3011 is disposed on a side wall in the circumferential direction of the main body 301. The key device 3011 includes a key portion 3012, a stopper portion 3013, and a rotation shaft 3014, the rotation shaft 3014 passes through the key portion 3012 and is fixed on a circumferential side wall of the main body 301, so that the key portion 3012 is fixed on the circumferential side wall of the main body 301, and the key portion 3012 is rotatable around the rotation shaft 3014. The stop part 3013 is disposed on a surface of the key part 3012 facing the inner side of the main body 301, and when the key part 3012 rotates around the rotation shaft 3014, the stop part 3013 is driven to rotate along with the key part 3012. The key device 3011 further includes a torsion spring (not shown), which is sleeved on the rotation shaft 3014, and the torsion spring may be housed in the key portion 3012 or may be housed in a side wall of the main body 301. In the initial state, the key portion 3012 is disposed at an angle to the side wall of the main body 301, and one end of the key portion 3012 is exposed outside the side wall of the main body 301, so as to facilitate the user to apply pressure to the key portion 3012, as shown in fig. 13. In use, pressing the distal cap 304 effects a relative movement or relative fixation between the guide rod 305 and the body 301, as shown in fig. 11. When the user presses the button 3012, the elastic potential energy caused by the deformation of the torsion spring needs to be overcome, so that the distal end cover 304 is restored to the initial state, as shown in fig. 14. When the user releases the button part 3012, the elastic potential energy of the torsion spring enables the torsion spring to restore, and the restoration of the torsion spring drives the button part 3012 to rotate to an initial state.

With continued reference to fig. 11 and 12, the main body 301 further includes an elastic member 3015, one end of the elastic member 3015 is connected to a side of the distal end cover 304 facing the elastic ring 303, and the other end of the elastic member 3015 is fixed in the main body 301. Specifically, the body 301 has a rib 3016 disposed therein, and the rib 3016 and the distal end cap 304 are axially spaced apart from each other. The elastic member 3015 is disposed between the reinforcing rib 3016 and the distal end cap 304, that is, one end of the elastic member 3015 is fixed to the distal end cap 304, and the other end is fixed to the reinforcing rib 3016. The elastic piece 3015, the distal end cover 304 and the reinforcing rib 3016 may be connected by glue adhesion, embedding a stop part, and the like.

Further, an end cap spring stop 3017 is provided on a side of the distal cap 304 facing the elastic ring 303. Specifically, the end cap spring stop 3017 has a stem 3017a and a barb 3017b. The stem 3017a is disposed proximate to the distal cap 304, and the barb 3017b is connected to an end of the stem 3017a distal from the distal cap 304. The barb 3017b protrudes toward the stopper 3013 with respect to the rod 3017 a. The stop portion 3013 includes a circular arc section 3013a, and the circular arc section 3013a is disposed on a face of the stop portion 3013 facing the end cap spring stop portion 3017. The control handle 30 is initially in an initial state as shown in fig. 13. When the guide rod 305 needs to be fixed relative to the main body 301, the distal end cover 304 is pressed, so that the distal end cover 304 moves in a direction approaching the elastic ring 303, the distal end cover 304 moves to drive the abutting block 302 and the end cover elastic stop 3017 to move in a direction approaching the elastic ring 303, and the elastic piece 3015 is gradually compressed. When the distal end cap 304 moves a certain distance, the barb portion 3017b contacts the arc segment 3013a, and then the distal end cap 304 is continuously pressed again, the barb portion 3017b pushes the stop portion 3013, so that the stop portion 3013 and the key portion 3012 rotate around the rotation axis 3014, and the stop portion 3013 can ensure that the barb portion 3017b continuously moves after rotating, so that the distal end cap 304 and the elastic ring 303 continuously move. The arc section 3013a can ensure that the barb 3017b can smoothly transition on the arc section 3013a, so as to achieve the effect of saving labor. When the barb portion 3017b passes the stop portion 3013, the key portion 3012 and the stop portion 3013 will return due to elastic potential energy of the torsion spring. And the surface of the reset stop part 3013 far away from the distal end cover 304 and the surface of the barb part 3017b close to the distal end cover 304 are mutually abutted, so that the end cover spring stop part 3017 is matched with the stop part 3013 in a clamping way, and further the movement of the distal end cover 304 is limited, and the distal end cover 304 is prevented from being reset by the elastic force of the elastic piece 3015 in a compressed state. And at this time, the abutting block 302 presses the elastic ring 303, and the elastic ring 303 is radially attached to the guide rod 305 after being pressed, so that the guide rod 305 is fixed relative to the main body 301, and at this time, the state of the control handle 30 is shown in fig. 11.

It will be appreciated that the distal end cap 304 and the abutment block 302 may be integrally formed; or may be split and sleeved on the guide rods 305 respectively. In a third embodiment of the present utility model, the distal end cap 304 and the abutment block 302 are integrally formed. After the end cover elastic stopping portion 3017 is in clamping fit with the stop portion 3013, the elastic piece 3015 is in a compressed state, the elastic ring 303 is in a pressed state, the elastic piece 3015 and the elastic ring 303 both have elastic force for restoring the original state, and the elastic force is smaller than the force required for deforming the torsion spring, so that the end cover elastic stopping portion 3017 and the stop portion 3013 are stably in clamping fit.

Referring to fig. 12 and 14, when the snap fit between the end cap elastic stop 3017 and the stop 3013 needs to be released, the guide rod 305 can move relative to the main body 301. Pressing the button part 3012 causes the button part 3012 to rotate about the rotation shaft 3014, and further causes the stopper part 3013 to rotate in a direction away from the barb part 3017 b. When the stop 3013 is rotated a certain angle, the barb 3017b will not contact the stop 3013. At this time, the distal end cover 304 will be restored by the elastic force of the elastic member 3015, and the abutting block 302 will not press the elastic ring 303 any more, and the guide rod 305 can move relative to the main body 301.

It can be understood that, in order to achieve the effort-saving effect, the button 3012 is prevented from being rotated only by pressing the button 3012 with excessive force, so as to further affect the safety of the operation; and avoids the stop 3013 having to be rotated too far to disengage from the barb 3017 b. The stopper 3013 is provided at an end of the key 3012 near the distal end cap 304, and the rotation shaft 3014 is provided near the stopper 3013.

It is understood that the number of the key devices 3011 may be one, two or more, for example, the number of the key devices 3011 is two, and two of the key devices 3011 are disposed at opposite sides of the sidewall of the main body 301. The number of the end cap spring stopping parts 3017 is also correspondingly one, and the end cap spring stopping parts are correspondingly arranged at the positions corresponding to the key device 3011.

Example IV

Referring to fig. 15-17, a fourth embodiment of the present utility model provides a control handle 40, and the main difference between the fourth embodiment and the third embodiment is that: the distal cap 404 of the fourth embodiment is provided on a side wall in the circumferential direction of the main body 401. The distal end cap 404 is movable only in a direction perpendicular to the axial direction of the guide rod 405. Specifically, the distal end of the body 401 is sealed, leaving only a passageway for the guide rod 405 to pass through. The distal end cover 404 includes an abutment portion 4041 and a pressing portion 4042, where the abutment portion 4041 and the pressing portion 4042 may be integrally formed, or the abutment portion 4041 and the pressing portion 4042 may be separately formed, and the abutment portion 4041 is fixedly connected with the pressing portion 4042. The abutting portion 4041 is configured to contact the abutting block 402, and the pressing portion 4042 is configured to be pressed by a user against the distal end cover 404. A first slope structure 4043 is provided on a surface of the abutment portion 4041 near the abutment block 402, and the first slope structure 4043 is installed in the main body 401 in a direction perpendicular to an axial direction of the main body 401. The abutting block 402 is correspondingly provided with a second slope structure 4021 at one end close to the first slope structure 4043, and the first slope structure 4043 and the second slope structure 4021 are in contact with each other. A clearance hole 4044 is provided at the first ramp structure 4043 to avoid interference of the guide rod 405 with the first ramp structure 4043. The key device 4011 is disposed near the distal end cover 404, and the key device 4011 includes a link 4010, a key portion 4012, a rotation shaft 4013, and a stopper portion 4014. The connecting rod 4010 is arranged perpendicular to the axial direction of the guide rod 405, one end of the connecting rod 4010 is fixedly connected with the key portion 4012, and the other end is slidably connected with the rotating shaft 4013. The stop portion 4014 is fixedly connected with the rotating shaft 4013, the stop portion 4014 is disposed at an angle with the connecting rod 4010, and an included angle between the connecting rod 4010 and the stop portion 4014 is preferably an acute angle. Pressing the key portion 4012 will drive the connecting rod 4010 to move, the connecting rod 4010 slides on the rotating shaft 4013, and then drives the rotating shaft 4013 to rotate, and the rotating shaft 4013 rotates and then drives the stop portion 4014 to rotate.

Further, the elastic member 4015 is fixed to the distal end cap 404 at one end and to the reinforcing rib 4016 at the other end. The resilient member 4015 provides the force required to reposition the distal cap 404. When the guide rod 405 needs to be locked, the distal end cover 404 is pressed down, the elastic member 4015 is compressed, the first slope structure 4043 slides on the second slope structure 4021, and since the distal end cover 404 can only move along the direction perpendicular to the axial direction of the guide rod 405, the sliding of the first slope structure 4043 pushes the abutting block 402 to move axially, so that the elastic ring 403 is pressed by the abutting block 402. And at this time, the barb portion 4017b of the end cap bullet-stopping portion 4017 is in clamping fit with the stop portion 4014, so as to realize clamping fit of the distal end cap 404 and the key device 4011, and further limit movement of the distal end cap 404, so that the abutting block 402 continuously presses the elastic ring 403. The elastic ring 403 is pressed to radially fit the guide rod 405, so that the guide rod 405 is fixed relative to the main body 401.

Referring to fig. 18, when the snap fit between the end cap spring stopping portion 4017 and the stop portion 4014 needs to be released, so that the guide rod 405 can move relative to the main body, the key portion 4012 is pressed, the link 4010 follows the movement of the key portion 4012, and the movement of the link 4010 drives the rotation shaft 4013 to rotate, so as to drive the stop portion 4014 to rotate. When the stop 4014 is rotated a certain angle, the barb 4017b will not contact the stop 4014. At this time, the distal end cover 404 will be restored by the elastic force of the elastic member 4015, the abutting block 402 will not press the elastic ring 403 any more, and the guide rod 405 can move relative to the main body.

It will be appreciated that the number of key devices 4011 may be one, two or more, for example, the number of key devices 4011 is two, both of the key devices 4011 being disposed near the distal end cover 404. Example five

Referring to fig. 19, a fifth embodiment of the present utility model provides a delivery system 50 for delivering articles, and the fifth embodiment of the present utility model is exemplified by a mitral valve clamping system, and is described in detail. The delivery system 50 comprises a cannula arrangement 501 and a control handle 502 as described in embodiments one to four, wherein the cannula arrangement 501 is fixedly connected to the distal end of the guiding rod 503, wherein the cannula arrangement 501 is fixed relative to the control handle 502 when the guiding rod 503 is fixed relative to the body 504, and wherein the body 504 is movable relative to the cannula arrangement 501 when the body 504 is movable relative to the guiding rod 503.

In particular, the control handle 502 may be a pusher for delivering the mitral valve clip to the lesion, and the cannula structure 501 may be an adjustable curved cannula for adjusting the delivery path of the mitral valve clip. When the guide rod 503 is locked, the pusher cannot rotate or axially move relative to the guide rod 503, and at this time, the adjustable curved sleeve fixedly connected with the guide rod 503 will move in unison with the pusher, that is, the pusher will move to drive the adjustable curved sleeve to move in unison. When the guide rod 503 is not locked, the pusher may move or rotate axially relative to the adjustable bend sleeve, and the adjustable bend sleeve may also rotate relative to the pusher. Therefore, the delivery system 50 can realize synchronous movement or independent movement between the sleeve structure 501 and the control handle 502, thereby improving the flexibility of operation of the mitral valve clamping system and greatly reducing the operation difficulty of doctors.

In addition, during surgery, the guide rod 503 needs to be locked: locking is performed before the left atrium is accessed through the femoral vein; after entering the left atrium, the instrument is locked when the pusher and the bending-adjustable sleeve are required to be integrally pushed, rotated and bent in the whole process of capturing the valve leaflet; the valve clip needs to be locked when being opened and closed in the body; after successful capture of the leaflets by the valve clip, locking is required upon release of the valve clip and withdrawal of the system from the body. The guide 503 does not need to be locked: after entering the left atrium, the adjustable curved cannula or pusher is released when it needs to be rotated separately; the pusher is released when it needs to be pushed back and forth separately.

Compared with the prior art, the control handle and the conveying system have the following advantages:

according to the utility model, through the elastic ring, the abutting block and the guide rod, the independent movement or the integral movement between the control handle and the sleeve structure is realized, so that the practicality, convenience and flexibility of the whole product are improved. When the guide rod is locked, the control handle and the sleeve structure can only move integrally. After the guide rod is unlocked, the control handle and the sleeve structure can be independently rotated, and the main body can also axially move along the guide rod relative to the sleeve structure, so that the operation flexibility of the conveying system is improved, and the operation difficulty of a doctor is greatly reduced.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, or alternatives falling within the spirit and principles of the utility model.

Claims (12)

1. A control handle, characterized in that: the control handle comprises a shell, a tight supporting block, a tight elastic ring and a guide rod, wherein the near end of the guide rod penetrates through the far end of the shell to enter the inside of the shell, the guide rod can move axially relative to the shell, the tight elastic ring and the tight supporting block are movably sleeved on the guide rod, the tight supporting block and the tight elastic ring are contained in the shell, the tight elastic ring is relatively close to the far end of the shell, and after the tight supporting block and the tight elastic ring are pressed, the guide rod is relatively static relative to the shell.

2. The control handle as set forth in claim 1, wherein: the abutting block and the elastic ring are integrally accommodated in the shell.

3. The control handle as set forth in claim 1, wherein: the shell comprises a main body and a distal end cover arranged at the distal end part of the main body, and the distal end cover can move relative to the main body so as to drive the abutting block to be close to or far away from the elastic ring.

4. A control handle as claimed in claim 3, wherein: the proximal end of the guide rod penetrates through the distal end cover to enter the shell, the distal end cover can only rotate around the longitudinal central shaft of the shell relative to the main body, the distal end cover is in threaded fit with the abutting block, and when the distal end cover rotates relative to the main body, the distal end cover drives the abutting block to move in a direction approaching to or far away from the elastic ring.

5. The control handle as set forth in claim 4, wherein: the remote end cover is provided with knob portion and cooperation portion, knob portion compares cooperation portion is more kept away from control handle's proximal end, cooperation portion install in the main part, be provided with first joint portion on the cooperation portion, the main part is provided with second joint portion, first joint portion with the cooperation of second joint portion.

6. The control handle as set forth in claim 4, wherein: the control handle is characterized in that the control handle further comprises an anti-rotation gasket and/or a pressure gasket, the anti-rotation gasket and/or the pressure gasket are/is sleeved on the guide rod, the anti-rotation gasket is arranged on one side, far away from the tight block, of the elastic ring, and the pressure gasket is arranged between the elastic ring and the tight block.

7. The control handle as set forth in claim 4, wherein: the one end that supports tight piece and be close to the elastic ring is provided with a plurality of gripper structures, and a plurality of gripper structures is close to the tip of elastic ring to the guide arm slope forms the shrink structure, when the distal end lid is rotatory to be driven support tight piece to be close to the direction motion of elastic ring, shrink structure supports the elastic ring, just shrink structure gets into the elastic ring with clearance between the guide arm, gripper structure receives the extrusion and radially laminates the guide arm, so that the guide arm is relative the main part is fixed.

8. A control handle as claimed in claim 3, wherein: the distal cap is axially movable relative to the body only along a longitudinal central axis of the housing.

9. The control handle as set forth in claim 8, wherein: the main body further comprises a key device and an elastic piece, wherein the key device comprises a stop part, and the far-end cover is provided with an end cover elastic stopping part; when the distal end cover moves in a direction approaching the elastic ring, the stop part and the end cover elastic stop part are mutually abutted, the elastic piece is compressed, the elastic ring is pressed by the abutting block, and the elastic ring is pressed and radially attached to the guide rod, so that the guide rod is static relative to the main body.

10. A control handle as claimed in claim 3, wherein: the distal end cover is provided on a side wall in the circumferential direction of the main body, and moves relative to the main body only in a direction perpendicular to the longitudinal center axis of the housing.

11. The control handle as set forth in claim 10, wherein: the main body further comprises a key device and an elastic piece, wherein the key device comprises a stop part, and the far-end cover is provided with an end cover elastic stopping part; when the distal end cover moves in a direction approaching the elastic ring, the stop part and the end cover elastic stop part are mutually abutted, the elastic piece is compressed, the elastic ring is pressed by the abutting block, and the elastic ring is pressed and radially attached to the guide rod, so that the guide rod is static relative to the main body.

12. A delivery system comprising a control handle as claimed in any one of claims 1 to 11, wherein the delivery system comprises a sleeve structure fixedly connected to the distal end of the guide rod, the sleeve structure being fixed relative to the control handle when the guide rod is fixed relative to the housing, the housing being movable relative to the sleeve structure when the housing is movable relative to the guide rod.