CN110786975B

CN110786975B - Handle assembly of conveyor, conveyor and conveying system

Info

Publication number: CN110786975B
Application number: CN201810879331.5A
Authority: CN
Inventors: 张军强
Original assignee: Lifetech Scientific Shenzhen Co Ltd
Current assignee: Lifetech Scientific Shenzhen Co Ltd
Priority date: 2018-08-03
Filing date: 2018-08-03
Publication date: 2022-07-05
Anticipated expiration: 2038-08-03
Also published as: CN110786975A

Abstract

The invention relates to a handle assembly of a support conveyor, which comprises a fixed handle and a movable handle, and further comprises a locking device, wherein the locking device comprises a clamping piece and a return piece; the clamping piece and the return piece are both arranged on the fixed handle, the movable handle comprises a movable clamping part, and the return piece is used for controlling the clamping piece to be clamped or separated with the movable clamping part so as to connect or separate the fixed handle and the movable handle; or the clamping piece and the return piece are both arranged on the movable handle, the fixed handle comprises a fixed clamping part, and the return piece is used for controlling the clamping piece to be clamped or separated with the fixed clamping part so as to enable the fixed handle to be connected or separated with the movable handle. The handle assembly of the stent delivery device can prevent the stent from being released and opened in advance.

Description

Handle assembly of conveyor, conveyor and conveying system

Technical Field

The invention relates to the field of interventional medical instruments, in particular to a handle assembly of a conveyor, the conveyor and a conveying system.

Background

In recent years, interventional therapy for cardiovascular diseases has become an important approach. With the continuous development of interventional technology, the advantages of using lumen stents (such as covered stents) to treat aortic aneurysms and arterial dissection diseases are prominent day by day. The covered stent is an artificial blood vessel which is adaptive to the size of the blood vessel and mainly comprises a covered membrane and a stent for supporting the covered membrane, wherein the covered membrane is generally made of terylene or expanded polytetrafluoroethylene (e-PTFE) membrane, and the supporting stent is mainly woven by stainless steel wires or nickel-titanium alloy wires. The use process of the covered stent is that the covered stent is firstly compressed into a sheath canal cavity of a stent conveyor, then a blood vessel is generally punctured at the position of a femoral artery or an iliac artery, a guide wire is utilized to establish a track, then the conveyor establishes a conveying path through the iliac artery, an abdominal aorta, a thoracic aorta, an aortic arch and an ascending aorta, then the conveying path is conveyed to a lesion appointed position, finally the covered stent is released, the covered stent is released and opened to be tightly attached to the wall of an aneurysm, a covering film of the covered stent isolates blood flow from a lesion part, the impact of the blood flow on the aneurysm wall of the lesion part is eliminated, a channel for normal circulation of the blood is established, and then the guide wire and the conveyor are withdrawn, so that the intervention treatment of the aneurysm and an arterial interlayer is realized.

The common stent conveyor consists of a sheath core tube, an outer sheath tube, a fixed handle, a movable handle and the like. The covered stent is conveyed into a human blood vessel by a stent conveyor, after the covered stent is positioned at the position of the pathological change of the blood vessel, the outer sheath tube is driven to retreat by the axial separation of the movable handle and the fixed handle, so that the covered stent is released and opened. For most of stent conveyors, the fixed handle and the movable handle are only in a plane contact state when the stent graft is not released, and in the transportation and storage processes of a stent conveying system, the condition that the stent graft is released and opened in advance due to relative separation of the movable handle and the fixed handle caused by jolting, shaking and the like is difficult to avoid. Meanwhile, in the clinical operation process, the condition that the movable handle and the fixed handle are separated in advance due to unreasonable operation of a doctor is difficult to avoid, so that the covered stent is released and opened in advance, and the product is invalid.

Disclosure of Invention

In view of this, there is a need for a handle assembly for a delivery apparatus that avoids premature release of the lumen device and product failure.

The handle assembly of the conveyor comprises a fixed handle and a movable handle, and further comprises a locking device, wherein the locking device comprises a clamping piece and a return piece;

the clamping piece and the return piece are both arranged on the fixed handle, the movable handle comprises a movable clamping part, and the return piece is used for controlling the clamping piece to be clamped or separated with the movable clamping part so as to connect or separate the fixed handle and the movable handle;

or the clamping piece and the return piece are both arranged on the movable handle, the fixed handle comprises a fixed clamping part, and the return piece is used for controlling the clamping piece to be clamped or separated with the fixed clamping part so as to enable the fixed handle to be connected with or separated from the movable handle.

In one embodiment, the return member is an elastic member;

when the clamping piece is separated from the movable clamping part, the elastic piece is in a compressed state;

or, when the clamping piece is separated from the fixed clamping part, the elastic piece is in a compressed state.

In one embodiment, the fixed handle comprises a fixed shell, the fixed shell encloses a containing cavity, the clamping piece and the return piece are both contained in the containing cavity, one end of the return piece abuts against the inner wall of the fixed shell, and the other end of the return piece abuts against the clamping piece.

In one embodiment, the movable handle further comprises a movable housing, and the movable clamping part is connected with the distal end of the movable housing.

In one embodiment, the movable handle further comprises a movable shell, the movable shell encloses a containing cavity, the clamping piece and the return piece are both contained in the containing cavity, one end of the return piece abuts against the inner wall of the movable shell, and the other end of the return piece abuts against the clamping piece.

In one embodiment, the fixed handle further comprises a fixed housing, and the fixed clamping part is connected with the proximal end of the fixed housing.

In one embodiment, a clamping structure is arranged on the clamping piece;

the movable clamping part is provided with a movable clamping structure, and the return piece controls the clamping structure to be clamped with or separated from the movable clamping structure;

or the fixed clamping part is provided with a fixed clamping structure, and the return piece controls the clamping structure to be clamped with or separated from the fixed clamping structure.

In one embodiment, the retaining structure is a protrusion or a groove;

the movable clamping structure is a groove or a bulge;

or, the fixed clamping structure is a groove or a protrusion.

In one embodiment, the movable clamping structure surrounds a longitudinal central axis of the movable handle; the fixed clamping structure surrounds the longitudinal central axis of the fixed handle.

The conveyor also comprises a handle assembly of the conveyor, the outer sheath tube is axially arranged in the fixed handle and the movable handle in a penetrating mode, and the outer sheath tube is fixedly connected with the movable handle.

A conveying system comprises a lumen instrument and the conveyor, wherein the lumen instrument is contained in the containing cavity.

The handle assembly of the conveyor is provided with the locking device comprising the clamping piece and the return piece, the clamping piece is controlled to be clamped or separated with the movable clamping part through the return piece, or the clamping piece is controlled to be clamped or separated with the fixed clamping part through the return piece so that the fixed handle is connected with or separated from the movable handle, therefore, in the transportation and storage processes of the conveying system, the movable handle and the fixed handle can be prevented from being released and opened in advance due to relative separation caused by jolt and other reasons, and the failure of products before use is avoided.

Drawings

FIG. 1 is a schematic diagram of the construction of one embodiment of a delivery system;

FIG. 2 is a schematic diagram of the conveyor of the conveying system of FIG. 1;

FIG. 3 is a schematic view of the fixed handle of the transporter shown in FIG. 2;

FIG. 4 is a schematic view of the movable handle of the conveyor shown in FIG. 2;

FIG. 5 is a schematic view of a latch of the delivery system of FIG. 1;

FIG. 6 is a schematic view of the engagement between the engagement member and the movable engagement portion of the conveyor of the conveying system shown in FIG. 1;

FIG. 7 is an enlarged view of the engagement member with the movable engagement portion of the conveyor system shown in FIG. 6;

FIG. 8 is a schematic view of the conveyor system of FIG. 1 with the engagement member disengaged from the movable engagement portion;

fig. 9 is a schematic structural view of a conveying system according to another embodiment.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.

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 invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

In the field of interventional medical devices, the "distal end" is defined as the end that is distal from the operator during the procedure, and the "proximal end" is defined as the end that is proximal to the operator during the procedure. "axial" refers to a direction parallel to the line joining the centers of the distal and proximal ends of the medical device, and "radial" refers to a direction perpendicular to the axial direction.

Referring to FIG. 1, one embodiment of a delivery system 100 includes a lumen instrument 1 and a delivery device 2.

In this embodiment, the luminal device 1 is a vascular stent. Specifically, the lumen device 1 is a stent graft including a support frame and a stent graft covering the support frame. The tectorial membrane cladding forms the lumen structure on supporting the skeleton.

Referring to both FIGS. 1 and 2, the delivery device 2 includes a sheath and core tube 20, an outer sheath tube 30, and a handle assembly 90 for a stent delivery device. The sheath core tube 20 and the outer sheath tube 30 are both hollow tubular members. The outer sheath tube 30 is sleeved on the sheath core tube 20, and the outer sheath tube 30 and the sheath core tube 20 are coaxial. Also, the outer sheath 30 is axially slidable relative to the sheath core tube 20. The outer sheath tube 30 and the sheath core tube 20 enclose an annular accommodating cavity 40, and the lumen instrument 1 is accommodated in the annular accommodating cavity 40.

In the present embodiment, the sheath-core tube 20 has a diameter-variable structure. Referring to fig. 2, the sheath-core tube 20 includes a first inner tube 21 and a second inner tube 22 fixedly connected to a proximal end of the first inner tube 21. The first inner tube 21 and the second inner tube 22 are both hollow tubular members. The first inner tube 21 is a tubular structure with an equal diameter, the second inner tube 22 is also a tubular structure with an equal diameter, and the outer diameter of the first inner tube 21 is smaller than that of the second inner tube 22. In one embodiment, the inner diameter of the first inner tube 21 and the inner diameter of the second inner tube 22 are equal. In this embodiment, the sheath-core tube 20 may be formed by integral molding. In other embodiments, the inner diameter of the first inner tube 21 is smaller than the inner diameter of the second inner tube 22, and the second inner tube 22 is sleeved and fixed on the proximal end of the first inner tube 21. The second inner tube 22 may be secured to the proximal end of the first inner tube 21 by bonding, welding, or the like.

The sheath core tube 20 is provided with a variable diameter structure, so that the second inner tube 22 can form better support for the outer sheath 30 in the region of the outer sheath 30 not covered by the lumen instrument 1, so as to prevent the outer sheath 30 from being bent.

Further, the conveyor 2 further comprises a guide head 10, and the guide head 10 is a conical hollow cavity structure with two open ends. The guide heads 10 are preferably TIP guide heads to provide better compliance of the guide heads 10. The distal end of the sheath core tube 20 extends into the guiding head 10 from the proximal end opening end of the guiding head 10 and is fixedly connected with the guiding head 10, and the cavity of the sheath core tube 20 is communicated with the cavity of the guiding head 10 to form a guide wire channel, so that the stent conveyor 2 can smoothly enter a blood vessel under the guidance of a guide wire.

The handle assembly 90 of the delivery device includes a fixed handle 50, a movable handle 60, a guide rod 70, and a locking mechanism 80.

Referring to fig. 3, the fixed handle 50 includes a fixed housing 51. The fixed housing 51 encloses a housing chamber 511 with both ends open. The top of the fixed casing 51 is opened with a key window 512.

A plurality of engaging plates 52 are provided in the stationary housing 51. One end of the plurality of engaging plates 52 is disposed on the inner wall of the fixed housing 51, and the other end thereof freely extends toward the housing chamber 511. The plurality of clamping plates 52 are distributed in pairs at intervals along the axial direction of the fixed shell 51, and each group of clamping plates 52 is parallel to the other groups of clamping plates 52. In each set of the click plates 52, the free ends of the two click plates 52 are opposed to each other, and a gap is formed between the free ends of the two click plates 52.

The engaging plate 52 may be fixedly disposed on the inner wall of the fixed housing 51 by means of gluing, welding, or mechanical structural connection. Alternatively, the stationary housing 51 and the clamping plate 52 may be integrally formed to form the stationary handle 50, for example, by injection molding.

A first fixing structure 513 is further provided on the inner wall of the fixed housing 51.

Referring to fig. 4, the movable handle 60 includes a movable housing 61 and a movable engaging portion 62. The movable housing 61 encloses a cavity 611 open at both ends. The movable engaging portion 62 is connected to the distal end of the movable housing 61. The movable engaging portion 62 is a substantially hollow cylindrical structure, the movable engaging portion 62 communicates with the movable housing 61, and a longitudinal central axis of the movable engaging portion 62 is collinear with a longitudinal central axis of the movable housing 61. The outer wall of the movable engaging portion 62 is provided with a movable engaging structure. In the present embodiment, the movable engaging structure is a groove 622 opened on the outer wall of the movable engaging portion 62. The movable engaging portion 62 and the movable housing 61 may be fixedly connected by gluing, welding, or the like. Alternatively, the movable engaging portion 62 is molded together with the movable case 61.

Further, a reinforcing plate 63 is provided in the movable case 61. One end of a plurality of reinforcing plates 63 is provided on the inner wall of the movable housing 61, and the other end freely extends toward the cavity 611. The plurality of reinforcing plates 63 are arranged in pairs in a group at intervals along the axial direction of the movable housing 61, and each group of reinforcing plates 63 is parallel to the other groups of reinforcing plates 63. In each set of the reinforcing plates 63, the free ends of the two reinforcing plates 63 are opposed to each other, and a gap is formed between the free ends of the two reinforcing plates 63.

Referring to fig. 1 again, the guide rod 70 is disposed through the fixed housing 51 and the movable housing 61, and the distal end of the guide rod 70 is fixedly connected to the fixed housing 51. When the fixed housing 51 and the movable housing 61 are connected, the movable engaging portion 62 extends into the fixed housing 51, and the proximal end surface of the fixed housing 51 is aligned with and abuts against the distal end surface of the movable housing 61. When the fixed housing 51 and the movable housing 61 are separated, the movable housing 61 is axially slidable relative to the fixed housing 51 along the guide 70.

Specifically, the guide rod 70 sequentially passes through the gap formed by the two clamping plates 52 of each set, and the distal end of the guide rod 70 is clamped by the two clamping plates 52 of each set, so that the distal end of the guide rod 70 is fixedly connected with the fixed housing 51. Further, the side walls of the guide rods 70 may be fixedly connected to the free end of each of the clamping plates 52 by means of gluing or welding. Furthermore, a stopper 71 is disposed on an outer wall of the guide rod 70, and the stopper 71 abuts against the snap plate 52 to further limit the axial sliding of the guide rod 70 along the fixed housing 51.

The plurality of clamping plates 52 are arranged, on one hand, the guide rod 70 can be clamped, so that the far end of the guide rod 70 is fixedly connected with the fixed shell 51, and on the other hand, the plurality of clamping plates 52 also play a role of reinforcing ribs, so that the strength of the fixed shell 51 is improved.

It will be appreciated that the free end of each engagement plate 52 is shaped to conform to the outer surface of the guide bar 70 to better engage the guide bar 70. Each set of the engaging plates 52 may be a one-piece structure, such as a hollow plate-like structure, the outer circumferential surface of which surrounds the axial direction of the fixed housing 51 and the outer circumferential surface of which is connected to the inner wall of the fixed housing 51. Through which the guide rod 70 passes.

The end of the guide rod 70 remote from the fixed handle 50 (i.e., the proximal end of the guide rod 70) extends into the movable housing 61 and, in turn, through the gap of each set of reinforcing plates 63, and extends proximally and axially from the proximal end of the movable housing 61. The guide rod 70 is located in the portion of the movable housing 61, which is not clamped by each set of reinforcing plates 63, and a gap is formed between the outer surface of the guide rod 70 and the free end of each set of reinforcing plates 63, so as to ensure that the movable housing 61 can slide axially along the guide rod 70.

Referring to fig. 1, the guide rod 70 is a hollow tubular member, and a cavity 72 is formed inside the guide rod 70. Referring to fig. 2, a through hole 73 is formed on the wall of the guide rod 70, and the through hole 73 is communicated with the cavity 72. Referring again to fig. 1, the proximal end of the outer sheath 30 penetrates into the cavity 72 of the guide rod 70, and the outer sheath 30 is fixedly connected to the movable housing 61. Specifically, two fixing members 64 may be provided in the movable housing 61, and one end of each fixing member 64 is fixedly connected to the inner wall of the movable housing 61, and the other end of each fixing member 64 extends into the cavity 72 from the through hole 73 and is fixedly connected to the outer wall of the outer sheath 30, so that the outer sheath 30 is fixedly connected to the movable housing 61.

In the present embodiment, the fixing member 64 has a sheet-like structure. The fixing member 64 includes proximal and distal end surfaces distributed in the axial direction and upper and lower end surfaces distributed in the radial direction. The distal end face and the proximal end face of the fixing member 64 are fixedly connected to the adjacent two reinforcing plates 63, respectively; the end face of the upper end of the fixing member 64 is suspended, the other end opposite to the suspended end extends into the cavity 72 from the through hole 73, and the end face of the lower end is fixedly connected with the outer wall of the outer sheath tube 30. It is understood that in other embodiments, the two fixing members 64 may be integrally formed into a hollow fixing structure, and are not limited to the two-piece structure in this embodiment. It is also understood that in other embodiments, the number of the fixing elements 64 may be three, four or more, as long as the plurality of fixing elements 64 can connect the outer sheath 30 with the movable housing 61.

Further, a reinforcing tube 65 is further disposed in the movable housing 61, the reinforcing tube 65 is sleeved on the sheath tube 30, and a proximal end of the reinforcing tube 65 is fixedly connected to a distal end of the fixing member 64. It is understood that the reinforcing tube 65 may be omitted, and the sheath tube 30 and the movable housing 61 may be fixedly connected by the fixing member 64 and the through hole 73. The provision of the reinforcing tube 65 increases the contact area, so that the connection of the sheath 30 to the movable housing 61 is more reliable. The reinforcing tube 65 may be fixedly connected to the fixing member 64 by means of gluing, welding, or the like. Alternatively, the reinforcing tube 65 and the fixing member 64 may be integrally formed.

Referring to fig. 1, the locking device 80 includes an engaging member 81 and a returning member 82. In the present embodiment, the engaging piece 81 and the return piece 82 are both accommodated in the accommodating chamber 511 of the fixed housing 51. The engaging piece 81 and the return piece 82 are both provided at the proximal end opening end of the fixed housing 51. Alternatively, the engaging member 81 and the returning member 82 are disposed at positions close to the proximal end opening end of the fixed housing 51. The engaging member 81 is opposite to the key window 512 (not labeled in fig. 1) on the fixed housing 51.

The engaging member 81 is an annular frame. The engaging member 81 is provided with a retaining structure. Referring to fig. 5, in the present embodiment, the engaging member 81 is an annular frame obtained by changing four right angles of a rectangular frame into four rounded corners; the retaining structure is a protrusion 812 disposed on the inner wall of the engaging member 81. Referring to fig. 1 again, the engaging member 81 is sleeved on the guide rod 70, an outer side wall of the engaging member 81 is engaged with an inner wall of the fixed housing 51, and the protrusion 812 of the engaging member 81 is located at the bottom. A gap is formed between the inner wall of the engaging piece 81 and the outer wall of the guide rod 70.

It should be understood that the engaging member 81 may have other shapes, such as an oval frame, as long as the engaging member 81 is adapted to the shape of the fixed housing 51 and the shape of the guide rod 70, so that the engaging member 81 is reliably disposed in the fixed housing 51, and the engaging member 81 is sleeved on the guide rod 70, and a sufficient gap is formed between the inner wall of the engaging member 81 and the outer wall of the guide rod 70.

The outer wall of the engaging member 81 is further provided with a second fixing structure 813. The second fixing structure 813 cooperates with the first fixing structure 513 on the fixed housing 51, so that the engaging member 81 is more reliably disposed in the fixed housing 51, and the engaging member 81 can move up or down along the fixed housing 51 under the action of the return member 82.

Specifically, the first fixing structure 513 may be a protrusion or a sliding groove, and the second fixing structure 813 may be a sliding groove or a protrusion that is engaged with the first fixing structure 513. In this embodiment, the first fixing structure 513 is a strip-shaped protrusion disposed on the inner wall of the fixed housing 51, and the second fixing structure 813 is a strip-shaped sliding slot. More specifically, to ensure the strength of the engaging member 81, the strip-shaped sliding groove is defined by two strip-shaped posts 814 provided on the side wall of the engaging member 81.

The return member 82 is an elastic member. Specifically, the return element 82 may be a metal spring, a metal elastic sheet, or an elastic element formed by a polymer elastic material. For example, the return member 82 may be a metal coil spring, an elastic sleeve made of a polymer material, or an elastic silicone gasket. The return member 82 shown in fig. 1 is a coil spring. One end of the return piece 82 is fixedly connected to the inner wall of the fixed housing 51, and the other end abuts against the bottom of the engaging piece 81. It is understood that the end of the return element 82 abutting against the engaging element 81 may be fixedly connected with the engaging element 81 or not fixedly connected with the engaging element 81. In the loaded state, the return member 82 may be in a free state, i.e., a state of being not compressed at all, or may be in a state of being partially compressed.

Referring to fig. 1 again, the locking device 80 further includes a button 83, one end of the button 83 is connected to the top of the engaging member 81, and the other end of the button 83 extends out of the button window 512 and is located outside the fixed housing 51, so as to press the returning member 82 or reset the returning member 82.

When the delivery system 100 is assembled, the lumen device 1 is compressed and loaded into the receiving chamber 40 surrounded by the sheath core tube 20 and the outer sheath tube 30, thereby loading the lumen device 1 into the stent transporter 2. In the loaded state, the distal end surface of the outer sheath tube 30 abuts the proximal end surface of the guide head 10. Referring to fig. 6, in the loaded state, the movable engaging portion 62 of the movable handle 60 extends into the fixed housing 51, the movable engaging portion 62 extends into the gap between the engaging member 81 and the guide rod 70, the recess 622 on the movable engaging portion 62 engages with the protrusion 812 on the engaging member 81, and the fixed handle 50 is connected to the movable handle 60. At this point, the return 82 is in a completely uncompressed state or in a state that is only partially compressed. In a completely uncompressed state or a state of being only partially compressed, the movable handle 60 cannot slide axially along the guide rod 70, and accordingly, the locked state of the movable handle 60 inhibits the outer sheath 30 from sliding axially so that the distal end surface of the outer sheath 30 is held in abutment with the proximal end surface of the guide head 10. At this time, the lumen device 1 (not shown in fig. 6) is constrained by the outer sheath 30, and the movable handle 60 is separated from the fixed handle 50 by jolting, so that the outer sheath 30 is prevented from being withdrawn during the transportation of the transportation system 100. In the clinical operation process, the condition that the movable handle 60 is separated from the fixed handle 50 to cause the withdrawal of the sheath tube 30 due to unreasonable operation of a doctor can be effectively avoided.

During the operation, after the lumen device 1 is delivered to the lesion, the outer sheath 30 is driven to slide axially proximally to release the lumen device 1 when the movable handle 60 is slid axially proximally along the guide rod 70 by separating the fixed handle 50 from the movable handle 60. Specifically, the releasing process is described with reference to fig. 1 and fig. 7 (fig. 7 does not show the lumen device 1), when the lumen device 1 is delivered to the diseased region, the returning element 82 is compressed or further compressed, the compression deformation of the returning element 82 causes the engaging element 81 to move downward in the radial direction, so that the protrusion 812 is separated from the groove 622 of the movable engaging portion 62, at this time, the constraint of the engaging element 81 on the movable handle 60 disappears, the fixed handle 50 and the movable handle 60 are in the unlocked state, that is, the two are separated, the movable handle 60 can slide axially along the guide rod 70, so as to drive the outer sheath 30 to slide axially towards the proximal end, so that the constraint of the outer sheath 30 on the lumen device 1 disappears, and thereby the lumen device 1 is released.

Therefore, since the handle assembly 90 of the transporter is provided with the locking device 80 comprising the clamping piece 81 and the return piece 82, the return piece 82 controls the clamping or separating of the clamping piece 81 and the movable clamping part 62 so as to connect or separate the fixed handle 50 and the movable handle 60, when the transporter 2 containing the handle assembly 90 of the transporter is used for transporting the lumen instrument 1, the lumen instrument 1 can be prevented from being released and opened in advance. Therefore, the delivery system 100 has good stability, and the situation that the lumen instrument 1 is released to open in advance to cause the failure of the delivery system 100 can not happen.

It should be noted that, referring to fig. 7, the width L1 of the gap formed between the inner wall of the engaging member 81 and the outer wall of the guide bar 70 is required to satisfy a certain requirement, not only the movable engaging portion 62 of the movable handle 60 can be inserted into the gap, but also when the movable engaging portion 62 is inserted into the gap, the gap L2 (i.e. the displacement amount of the radial displacement of the engaging member 81) between the inner wall of the engaging member 81 and the outer wall of the movable engaging portion 62 must be greater than the height H1 of the protrusion 812 or the depth H2 of the groove 622, so as to ensure that the protrusion 812 of the engaging member 81 can be separated from the groove 622 when the returning member 82 is compressed. Specifically, the sizes of L1 and L2 can be adjusted reasonably by the dimensions of the engaging piece 81, the guide rod 70 and the engaging piece 81. For example, the sizes of L1 and L2 are adjusted by adjusting the wall thicknesses of the guide rod 70 and the movable engaging portion 62. Alternatively, the sizes of L1 and L2 are adjusted by adjusting the width and thickness of the engaging piece 81 in the radial direction.

In other embodiments, the retaining structure of the engaging member 81 may be a groove formed on the inner wall of the engaging member 51. Accordingly, the groove 622 on the movable engaging portion 62 can be omitted, and a corresponding protrusion can be provided on the movable engaging portion 62 to match with the groove of the engaging member 81. Thus, the movable connection between the fixed handle 50 and the movable handle 60 can be realized.

In one embodiment, whether the movable engaging portion 62 is provided with the groove 622 or the protrusion, the groove 622 or the protrusion provided on the movable engaging portion 62 is disposed around the longitudinal central axis of the movable handle 60, so that during the transportation process or at any time before the lumen device 1 needs to be released, no matter how the movable handle 60 rotates, the reliable connection between the fixed handle 50 and the movable handle 60 can be ensured, so as to avoid the premature release of the lumen device 1.

Referring to fig. 8, in another embodiment, a locking device 80 is disposed in the movable handle 60. Specifically, the engaging piece 81 and the return piece 82 are both accommodated in the accommodating chamber 611 of the movable housing 61. The engaging piece 81 and the return piece 82 are both disposed at the distal end opening end of the movable housing 61. Alternatively, the engaging member 81 and the returning member 82 are both disposed near the distal end opening end of the movable housing 61. In this case, a key window (not shown in fig. 8) is formed in the movable case 61, and one end of the key 83, which is away from the engaging piece 81, protrudes from the key window and is located outside the movable case 61. The movable engaging portion 62 of the movable handle 60 is omitted. The fixed handle 50 includes a fixed engaging portion 53, and the key window 512 of the fixed case 51 is omitted. In this embodiment, the groove 532 is formed on the fixed engaging portion 53, and the protrusion 812 of the control engaging member 81 is engaged with or disengaged from the groove 532 through the returning member 82, so that the fixed handle 50 and the movable handle 60 are connected or separated, thereby effectively preventing the lumen device 1 from being released and opened in advance.

It is understood that in other embodiments, the retaining structure on the engaging member 81 can be a groove. Accordingly, the groove 532 on the fixed engaging part 53 can be omitted, and the corresponding protrusion on the fixed engaging part 53 can be matched with the groove of the engaging member 81. Thus, the movable connection between the fixed handle 50 and the movable handle 60 can be realized.

It will be appreciated that in the embodiment shown in figure 8 the first securing formation 513 on the inner wall of the fixed housing 51 is omitted. Accordingly, a fixing structure matching with the second fixing structure 813 of the engaging member 81 is provided on the inner wall of the movable housing 61 so that the engaging member 81 can be more reliably disposed in the movable handle 50 and the engaging member 81 can move up or down in the radial direction of the movable housing 61.

It should be noted that the lumen device 1 in the delivery system 100 is a lumen-like implantation device, for example, the lumen device 1 is a vascular stent. Vascular stents include, but are not limited to, aortic stents, coronary stents, peripheral stents, biliary stents, and the like. Alternatively, the luminal device 1 is a heart valve prosthesis or the like. The delivery apparatus 2 is suitable for delivering various types of luminal instruments 1.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A handle assembly of a conveyor comprising a fixed handle comprising a fixed housing and a movable handle comprising a movable housing; the handle assembly of the conveyor is characterized by further comprising a locking device and a clamping part, wherein the locking device comprises a clamping piece and a return piece;

the clamping piece and the return piece are both arranged on the fixed shell or the movable shell, and correspondingly, the clamping part is arranged on the movable shell or the fixed shell; the clamping piece is an annular frame and is matched with the shape of the fixed shell or the movable shell and the shape of the guide rod, the outer side wall of the clamping piece is clamped with the inner wall of the fixed shell or the movable shell, and a gap is formed between the inner wall of the clamping piece and the outer wall of the guide rod; the inner wall of the clamping piece also comprises a clamping structure; one end of the return piece is fixedly connected with the inner wall of the fixed shell or the movable shell, and the other end of the return piece is abutted against the outer wall of the bottom of the clamping piece; the return piece is used for controlling the clamping structure to be clamped or separated with the clamping part so as to connect or separate the fixed handle and the movable handle.

2. The handle assembly of claim 1, wherein said return member is a resilient member;

when the clamping piece is separated from the clamping part arranged on the movable shell, the elastic piece is in a compressed state;

alternatively, when the engaging piece is separated from an engaging portion provided on the fixed case, the elastic piece is in a compressed state.

3. The conveyor handle assembly of claim 1 wherein said stationary housing encloses a receiving cavity, said engagement member and said return member being received in said receiving cavity.

4. The handle assembly of claim 3, wherein said snap-fit portion is connected to a distal end of said movable housing.

5. The conveyor handle assembly of claim 1 wherein said movable housing defines a receiving cavity, said engagement member and said return member being received in said receiving cavity.

6. The handle assembly of claim 5, wherein said snap-fit portion is connected to a proximal end of said stationary housing.

7. The handle assembly of a conveyor according to claim 1,

the clamping part is provided with a clamping structure, and the return piece controls the clamping structure to be clamped with or separated from the clamping structure.

8. The handle assembly of claim 7, wherein said catch structure is a projection or a groove; the clamping structure is a groove or a bulge.

9. The handle assembly of claim 7, wherein said snap-fit structure encircles a longitudinal central axis of said stationary handle.

10. A conveyor comprising a sheath core pipe and an outer sheath pipe, wherein the outer sheath pipe is sleeved on the sheath core pipe, the outer sheath pipe can axially slide relative to the sheath core pipe, and the sheath core pipe and the outer sheath pipe enclose an accommodating cavity, the conveyor further comprises a handle assembly of the conveyor according to any one of claims 1 to 9, the outer sheath pipe axially penetrates through the fixed handle and the movable handle, and the outer sheath pipe is fixedly connected with the movable handle.

11. A delivery system comprising a luminal instrument, wherein the delivery system further comprises the delivery apparatus of claim 10, wherein the luminal instrument is received in the receiving chamber.