CN114699216B

CN114699216B - Airway stent conveying device

Info

Publication number: CN114699216B
Application number: CN202210405581.1A
Authority: CN
Inventors: 罗凤鸣; 陈宇; 李依璟; 万华靖; 赖玉田; 张心远
Original assignee: West China Precision Medicine Industrial Technology Institute; West China Hospital of Sichuan University
Current assignee: West China Precision Medicine Industrial Technology Institute; West China Hospital of Sichuan University
Priority date: 2022-04-18
Filing date: 2022-04-18
Publication date: 2022-11-04
Anticipated expiration: 2042-04-18
Also published as: CN114699216A

Abstract

The application discloses air flue support conveyor belongs to medical instrument technical field, and it includes first control cabinet, second control cabinet, a plurality of slider and many spinal branch vaulting poles. A bar-shaped groove is formed in the first control seat, and an arc-shaped groove is formed in the position, corresponding to the second control seat, of the second control seat. The slider joint is in bar groove and arc wall simultaneously to make the second control seat when rotating for first control seat, the slider can be close to or keep away from the center of first control seat. One end of the supporting rod is connected with the sliding block, and the other end of the supporting rod is used for being connected with the air flue support. When the bracing piece removed along with the slider towards first control seat center, the air flue support shrink to in sending into user's air flue with the air flue support, drive the outward flange removal of bracing piece towards first control seat when the slider, the bracing piece can strut the air flue support this moment, can effectively avoid the support to cause the injury at the air flue that removes the in-process to the user like this.

Description

Airway stent conveying device

Technical Field

The invention relates to the technical field of medical instruments, in particular to an airway stent conveying device.

Background

Malignant airway stenosis refers to a respiratory tract stenosis caused by invasion or compression of primary or metastatic tumors of the trachea, carina, left and right main bronchi and middle bronchial tubes and malignant tumors of adjacent organs, which seriously threatens human health and causes respiratory ventilation obstruction to patients. The stent can quickly and effectively relieve the dyspnea of the patient, improve the life quality and win time for further treatment.

At present, the stent clinically used is a nickel-titanium alloy stent, and the stent has strong integral supporting force and good plasticity. When installing, current support pusher can produce the friction with user's air flue at the in-process of advancing, causes the injury to user's air flue easily.

Disclosure of Invention

The invention discloses an airway stent delivery device to improve the problems.

The technical scheme adopted by the invention for solving the technical problems is as follows:

based on the above object, the present invention discloses an airway stent delivery device, comprising:

the first control seat is provided with a plurality of strip-shaped grooves, the strip-shaped grooves extend outwards from the center of the first control seat, and the strip-shaped grooves are arranged at intervals along the circumferential direction of the first control seat;

the second control seat is provided with a plurality of arc-shaped grooves which are used for being matched with the strip-shaped grooves, the arc-shaped grooves extend outwards from the center of the second control seat, the arc-shaped grooves and the strip-shaped grooves are arranged in a one-to-one correspondence mode, and the second control seat is rotatably connected with the first control seat;

one end of each sliding block is clamped in the arc-shaped groove, and the second end of each sliding block is clamped in the strip-shaped groove, so that when the second control seat rotates relative to the first control seat along the first direction, the sliding blocks move towards the direction far away from the center of the first control seat, when the second control seat rotates relative to the first control seat along the second direction, the sliding blocks move towards the direction close to the center of the first control seat, and the sliding blocks and the arc-shaped grooves are arranged in a one-to-one correspondence manner; and

the supporting rods are connected with the sliding blocks, and the supporting rods are arranged in a one-to-one correspondence mode with the sliding blocks.

Optionally: a groove is formed in the center of the first control seat, a first control tube is arranged on the first control seat and is positioned in the groove, the first control tube and the groove are coaxially arranged, and an opening is formed in the side wall of the first control tube; a second control tube is arranged on the second control seat, the second control tube is clamped in the groove and sleeved outside the first control tube, a plurality of clamping grooves are formed in the inner wall of the second control tube, and the plurality of clamping grooves are formed along the circumferential direction of the second control tube;

airway support conveyor still includes limit structure, limit structure includes control lever and control block, the control lever with the second control holder rotates to be connected, just the control lever cover is located in the first control tube, on the control lever with the position that the opening corresponds is provided with first groove of stepping down, the control block is located in the opening, the control block with first control tube rotates to be connected, just the axis of rotation of control block with the axis of first control tube is parallel, rotates the control lever so that the control block card is gone into first groove of stepping down perhaps in the draw-in groove.

Optionally: the limiting structure further comprises a torsion spring, two ends of the torsion spring are respectively connected with the control block and the first control pipe, and the free end of the control block is enabled to have a tendency of rotating towards the control rod through the torsion spring.

Optionally: one side of the control block, which faces the control rod, is arc-shaped, and the diameter of a circle corresponding to the arc-shaped surface is larger than that of the control rod;

the control rod is provided with a second yielding groove used for being matched with the control block, the second yielding groove and the first yielding groove are arranged along the circumferential interval of the control rod, the shape of the second yielding groove is matched with that of the control block, and the length of the second yielding groove is smaller than that of the control block.

Optionally: the sunken degree of depth in first groove of stepping down is followed first direction reduces gradually to the messenger works as when the control lever rotates along first direction, the control block gets into in the draw-in groove, works as when the control lever rotates along the second direction, the control block leaves the draw-in groove and gets into in the first groove of stepping down.

Optionally: the first groove of stepping down includes first spacing portion and the spacing portion of second, first spacing portion with the spacing portion of second communicates each other, just the depth of concavity of first spacing portion is along deviating from the direction of the spacing portion of second reduces gradually, the lateral wall of the spacing portion of second is the arc, just curved outside orientation the axis setting of control lever.

Optionally: be provided with first shifting block on the second control seat, be provided with on the control lever and be used for first shifting block complex second shifting block works as the slider removes extremely the arc wall deviates from when the one end at the center of control seat, first shifting block stirs the second shifting block, so that the control lever is followed the second control seat is followed together first direction rotates, just the control block card is gone into just in the second groove of stepping down.

Optionally: the clamping grooves are continuously arranged along the circumferential direction of the second control tube, each clamping groove comprises an inclined wall and a vertical wall, the vertical walls are arranged along the radial direction of the second control tube, and the inclined walls and the vertical walls are obliquely arranged so that the depth of each clamping groove is gradually reduced along the first direction.

Optionally: the radial extension length of the arc-shaped groove on the second control seat is greater than or equal to the radial extension length of the strip-shaped groove on the second control seat.

Optionally: the cross section of the first control seat is circular, the cross section of the second control seat is circular, the second control seat and the first control seat are coaxially arranged, and the diameter of the second control seat is smaller than that of the first control seat.

Compared with the prior art, the invention has the following beneficial effects:

when the airway stent conveying device disclosed by the invention is used, the stent is firstly contracted and then expanded after being conveyed to the designated position, so that the injury of the stent to an airway of a user in the moving process can be effectively avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is a schematic diagram illustrating an airway stent delivery device disclosed in an embodiment of the present invention in a first state;

FIG. 2 is a schematic diagram of an airway stent delivery device according to an embodiment of the present disclosure in a second state;

FIG. 3 illustrates an enlarged partial view of FIG. 2 in accordance with an embodiment of the present disclosure;

FIG. 4 is a schematic illustration of a first control pod of the disclosed embodiments;

FIG. 5 shows an enlarged partial view of FIG. 4 in accordance with an embodiment of the present disclosure;

FIG. 6 is a schematic view of a second control pod of the disclosed embodiment of the present invention;

FIG. 7 illustrates an enlarged partial view of FIG. 6 in accordance with an embodiment of the present disclosure;

FIG. 8 is a schematic diagram of a confinement structure disclosed in an embodiment of the invention in a first state;

FIG. 9 is a schematic illustration of a second control tube according to the disclosed embodiments;

FIG. 10 is a schematic diagram illustrating the connection of a first control tube to a control block according to an embodiment of the disclosure;

FIG. 11 is a schematic illustration of a control stick disclosed in an embodiment of the present invention;

FIG. 12 shows an enlarged partial view of FIG. 11 in accordance with an embodiment of the present disclosure;

FIG. 13 is a schematic diagram of a confinement structure disclosed in an embodiment of the invention in a second state;

FIG. 14 is a schematic diagram of a confinement structure disclosed in an embodiment of the invention in a third state;

fig. 15 is a schematic diagram of a limiting structure in a fourth state according to an embodiment of the present invention.

In the figure:

110-a first control seat, 111-a strip-shaped groove, 112-a groove, 113-a first control tube, 1131-an opening, 120-a second control seat, 121-an arc-shaped groove, 122-a second control tube, 1221-an inclined wall, 1222-a vertical wall, 1223-a clamping groove, 123-a first shifting block, 130-a sliding block, 141-a control rod, 1411-a second shifting block, 1412-a first abdicating groove, 1413-a second abdicating groove and 142-a control block.

Detailed Description

The invention is described in further detail below by means of specific embodiments and with reference to the attached drawings.

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, as generally described and illustrated in the figures herein, could be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as disclosed in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present application, it should be noted that the indication of orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of the application is used, or the orientation or positional relationship which is usually understood by those skilled in the art, or the orientation or positional relationship which is usually placed when the product of the application is used, and is only for the convenience of describing the application and simplifying the description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may for example be fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Example (b):

referring to fig. 1 and 2, an embodiment of the present invention discloses an airway stent delivery device, which includes a first control seat 110, a second control seat 120, a plurality of sliders 130, and a plurality of support rods (not shown). The first control seat 110 is provided with a strip-shaped groove 111, and the second control seat 120 is provided with an arc-shaped groove 121 used for matching with the strip-shaped groove 111. The sliding block 130 is simultaneously clamped in the strip-shaped groove 111 and the arc-shaped groove 121, so that when the second control seat 120 rotates relative to the first control seat 110, the sliding block 130 can be close to or far away from the center of the first control seat 110. The one end and the slider 130 of bracing piece are connected, the other end of bracing piece is used for being connected with the air flue support, the bracing piece is connected in the inboard of air flue support, when the bracing piece removes along with slider 130 towards first control seat 110 center, the air flue support shrink, in so that send the air flue support into user's air flue, after the air flue support is sent the appointed position, rotate second control seat 120, make slider 130 drive the outward flange removal of bracing piece towards first control seat 110, the bracing piece can strut the air flue support this moment, normal use.

The disclosed air flue support conveyor of this embodiment is when using, and earlier with the support shrink, wait to send to and struts the support after the assigned position again, can effectively avoid the support to cause the injury to user's air flue at the removal in-process.

Referring to fig. 4, the cross section of the first control seat 110 is circular, a plurality of linear grooves 111 are formed in the cross section, the linear grooves 111 extend outwards from the center of the first control seat 110, and the plurality of linear grooves 111 are arranged at intervals along the circumferential direction of the first control seat 110. The plurality of strip-shaped grooves 111 extend outwards from a position close to the center of the first control seat 110, so that the plurality of strip-shaped grooves 111 are not communicated with each other, and the sliding blocks 130 can move in the respective strip-shaped grooves 111.

Referring to fig. 6, the cross section of the second control base 120 is also circular, the second control base 120 is rotatably connected to the first control base 110, the second control base 120 is coaxially disposed with the first control base 110, and the diameter of the second control base 120 is smaller than that of the first control base 110. A plurality of arc-shaped slots 121 are formed in the second control seat 120, the arc-shaped slots 121 extend outwards from the center of the second control seat 120, and the arc-shaped slots 121 are arranged at intervals along the circumferential direction of the second control seat 120. The arc-shaped grooves 121 extend outwards from a position close to the center of the first control seat 110, so that the arc-shaped grooves 121 are not communicated with each other, the position of the arc-shaped groove 121 corresponds to the position of the strip-shaped groove 111, and the radial extension length of the arc-shaped groove 121 on the second control seat 120 is greater than or equal to the radial extension length of the strip-shaped groove 111 on the second control seat 120, so that when the second control seat 120 rotates relative to the first control seat 110, the arc-shaped groove 121 and the strip-shaped groove 111 always have overlapped parts in the direction of the rotation axis of the second control seat 120. One end joint of slider 130 is in arc groove 121, and the other end joint of slider 130 is in bar groove 111, through rotating second control seat 120, can change the position of arc groove 121 and the coincidence of bar groove 111 to make slider 130 slide in bar groove 111.

Referring to fig. 1 and 2, when the second control socket 120 rotates relative to the first control socket 110 in a first direction, the sliding block 130 moves away from the center of the first control socket 110, and when the second control socket 120 rotates relative to the first control socket 110 in a second direction, the sliding block 130 moves closer to the center of the first control socket 110.

In the present embodiment, the clockwise direction in fig. 1 is taken as the first direction, and the counterclockwise direction in fig. 1 is taken as the second direction.

The supporting rod is connected with the sliding block 130, and the supporting rod can move along with the sliding block 130, when the supporting rod moves towards the center of the first control seat 110 along with the sliding block 130, the air flue bracket contracts along with the supporting rod, and at the moment, the air flue bracket is convenient to be placed in the air flue of a user; when the support bar moves towards the edge of the first control seat 110 along with the sliding block 130, the airway stent is spread by the support bar, and the airway stent can be used normally.

In this embodiment, the strip-shaped groove 111 and the arc-shaped groove 121 are both provided in three, and are provided as shown in fig. 4 and 6, and the slider 130 and the support rod are correspondingly provided in three. When the second control seat 120 rotates, the three sliding blocks 130 drive the supporting rod to slide along the direction of the bar-shaped groove 111. Of course, the number of the strip-shaped groove 111, the arc-shaped groove 121, the slider 130 and the support rods is set to three, which is only one embodiment of the present embodiment, in other embodiments, it is also possible to set the strip-shaped groove 111, the arc-shaped groove 121, the slider 130 and the support rods to be more, and in order to ensure that the airway stent can be stably spread, the strip-shaped groove 111, the arc-shaped groove 121, the slider 130 and the support rods are preferably set to be at least three. The number of the strip-shaped grooves 111, the number of the arc-shaped grooves 121, the number of the sliding blocks 130 and the number of the supporting rods are consistent and are respectively arranged in a one-to-one correspondence manner.

Referring to fig. 4, 5 and 10, a groove 112 is formed at a central position of the first control socket 110, and a first control tube 113 is formed on the first control socket 110. The groove 112 is located on a side of the first control socket 110 facing the second control socket 120, the first control tube 113 is located in the groove 112, and the first control tube 113 and the groove 112 are coaxially arranged. An opening 1131 is provided in a side wall of the first control tube 113, and the opening 1131 penetrates the first control tube 113 in a radial direction of the first control tube 113.

Referring to fig. 6, 7 and 9, the second control seat 120 is provided with a second control tube 122, the second control tube 122 is clamped in the groove 112, the second control tube 122 is sleeved outside the first control tube 113, the inner wall of the second control tube 122 is provided with a plurality of clamping grooves 1223, and the plurality of clamping grooves 1223 are arranged along the circumferential direction of the second control tube 122. The plurality of catching grooves 1223 are continuously arranged in the circumferential direction of the second control tube 122, the catching grooves 1223 include an inclined wall 1221 and an upright wall 1222, the upright wall 1222 is arranged in the radial direction of the second control tube 122, and the inclined wall 1221 is arranged obliquely to the upright wall 1222 such that the depth of the catching grooves 1223 is gradually reduced in the first direction.

Referring to fig. 8 and 10 to 12, the airway stent delivery device further includes a limiting structure for limiting the rotation of the second control console 120. The limiting structure includes a control rod 141, a control block 142 and a torsion spring (not shown), the control rod 141 is rotatably connected to the second control base 120, and the control rod 141 is sleeved in the first control tube 113. A first abdicating groove 1412 and a second abdicating groove 1413 are arranged on the control rod 141 at positions corresponding to the opening 1131, the first abdicating groove 1412 and the second abdicating groove 1413 are both recessed inwards along the radial direction of the control rod 141, and the first abdicating groove 1412 and the second abdicating groove 1413 are arranged at intervals along the circumferential direction of the control rod 141. The control block 142 is rotatably connected to the first control tube 113, and the rotation axis of the control block 142 is parallel to the axis of the first control tube 113. The two ends of the torsion spring are connected to the control block 142 and the first control tube 113, respectively, and the torsion spring makes the free end of the control block 142 have a tendency to rotate towards the control rod 141, i.e. the torsion spring twists the control block 142 to have a tendency to rotate in the second direction. The side of the control block 142 facing the control rod 141 is arc-shaped, and the diameter of the circle corresponding to the arc-shaped surface is larger than the diameter of the control rod 141.

Rotating the control lever 141 to allow the control block 142 to be clamped into the first and

second relief grooves

1412, 1413 or the clamping groove 1223, specifically referring to fig. 8, 13 and 14, initially, the control block 142 is clamped into the first relief groove 1412, and at this time, the second control tube 122 can freely rotate relative to the first control tube 113; when the control lever 141 is rotated in the first direction, the control block 142 is pushed out of the first abdicating groove 1412, and at this time, the control block 142 is clamped in the clamping groove 1223, so that the second control tube 122 cannot rotate relative to the first control tube 113 any more; when the control lever 141 is further rotated in the first direction, a small portion of the control block 142 is clamped into the second receding groove 1413, and a large portion of the control block 142 is still clamped into the clamping groove 1223, which can also limit the rotation of the second control tube 122.

When the control block 142 is pushed to the edge of the first indent 1412 and is inserted into the engaging slot 1223, the torsion spring makes the control block 142 tend to rotate in the second direction, so that the control block 142 tends to return to the first indent 1412, and the lever 141 needs to be pressed all the time to continuously restrict the second control tube 122. After the second abdicating groove 1413 is arranged, the above situation can be effectively improved, when the control block 142 is clamped in the second abdicating groove 1413, the arc surface of the control block 142 is attached to the bottom wall of the abdicating groove, the end part of the control block 142 is abutted to the end wall of the second abdicating groove 1413, at this time, the torsion spring makes the control block 142 have a tendency of rotating along the second direction, the control block 142 also transmits the force to the control rod 141, and makes the control rod 141 have a tendency of rotating along the first direction, at this time, because the end part of the control block 142 is abutted to the end wall of the second abdicating groove 1413, the control rod 141 cannot rotate along the first direction, and the control block 142 cannot rotate along the second direction; besides, under the condition that the control rod 141 is driven by the control block 142 to have a tendency of rotating along the first direction, the control rod 141 and the control block 142 are in a self-locking state when not subjected to external force, that is, when the control rod 141 is not subjected to external force, the control block 142 is continuously clamped in the second receding groove 1413, so that the second control tube 122 is ensured to be continuously limited. When the restriction on the second control tube 122 needs to be removed, only the control rod 141 needs to rotate along the second direction, and at this time, the control rod 141 needs to rotate along the second direction only by overcoming the acting force of the torsion spring, and the torsion spring is arranged to ensure the self-locking between the control block 142 and the control rod 141 on one hand, and prevent the accidental touch on the other hand, so that the rotation of the control rod 141 needs to overcome the force of the torsion spring to rotate.

In this embodiment, the first abdicating groove 1412 includes a first limiting portion and a second limiting portion, the first limiting portion and the second limiting portion are communicated with each other, the depth of the recess of the first limiting portion is gradually reduced along the direction departing from the second limiting portion, the side wall of the second limiting portion is arc-shaped, and the outer side of the arc-shaped is arranged toward the axis of the control rod 141. When the control rod 141 rotates, the end of the control block 142 contacts with different positions of the second limiting portion, and when the end of the control block 142 contacts with one end of the second limiting portion, which is far away from the first limiting portion, the control block 142 completely leaves the range of the first avoiding groove 1412, and at this time, the control block 142 enters the clamping groove 1223 to limit the rotation of the second control tube 122. When the end of the control block 142 contacts the joint of the second limiting portion and the first limiting portion, the sidewall of the control block 142 just abuts against the first limiting portion, and at this time, under the action of the torsion spring, the control block 142 has a tendency to rotate in the second direction, and at the same time, the control rod 141 also has a tendency to rotate in the first direction, but because the arc-shaped outer side of the second limiting portion is disposed toward the axis of the control rod 141, when the end of the control block 142 contacts the middle position of the second limiting portion, the second limiting portion and the control block 142 have a tendency to slide toward the first limiting portion until the end of the first limiting portion slides to the joint of the second limiting portion and the first limiting portion, based on this, even if the torsion spring makes the control block 142 have a tendency to rotate in the second direction, the control block 142 cannot drive the control rod 141 to rotate freely under the restriction of the arc-shaped second limiting portion, thereby ensuring that the control block 142 can always move in the first abdicating groove 1412 when the control rod 141 is not subjected to external force, and further ensuring that the second control tube 122 can rotate relative to the control tube 113 when the control rod 141 is not subjected to external force. Meanwhile, when the second control socket 120 rotates relative to the first control socket 110, the control rod 141 does not rotate with the second control socket 120 under the restriction of the torsion spring.

Referring to fig. 2 and 3, in some embodiments of the present embodiment, a first shifting block 123 is disposed on the second control seat 120, a second shifting block 1411 for matching with the first shifting block 123 is disposed on the control rod 141, and the second shifting block 1411 is located on a moving path of the first shifting block 123. When the sliding block 130 moves to an end of the arc-shaped slot 121 departing from the center of the control seat, the first shifting block 123 shifts the second shifting block 1411, so that the control rod 141 rotates along with the second control seat 120 along the first direction, and the control block 142 is just clamped into the second abdicating slot 1413. That is, when the slider 130 moves to the outermost position of the strip-shaped groove 111 or the arc-shaped groove 121, the control block 142 is just clamped into the second abdicating groove 1413, so that the control rod 141 and the control block 142 are self-locked, and the rotation of the second control seat 120 is limited. In-process that struts at the air flue support, the air flue support also can contact with user's air flue, the air flue support also can receive the resistance when strutting hard, this resistance can make the air flue support have the trend of shrink, just also can make bracing piece and slider 130 have the trend of inside slip, can effectually overcome this trend after setting up foretell structure, make the air flue support strut the back before not fixed, its shape can not change, after the air flue support after strutting is fixed, can separate air flue support conveyor and air flue support.

When the air flue support conveying device disclosed by the application is used, when the slider 130 is located at the position, closest to the center of the first control seat 110, of the strip-shaped groove 111, the control block 142 is just clamped into the first yielding groove 1412, and when the slider 130 is located at the position, farthest from the first control seat 110, of the strip-shaped groove 111, one part of the control block 142 is clamped into the second yielding groove 1413, and the other part of the control block is clamped into the clamping groove 1223. However, the air flue support conveying device disclosed by the application also has an application state, and in the application process, the condition that the air flue support cannot be directly opened at one time can occur, namely when the air flue support is partially opened, the air flue support needs to stay for a period of time, so that secondary injury caused by the fact that the air flue of a user is directly opened is avoided. Referring to fig. 15, when the airway stent is expanded to any size and needs to be temporarily held, the control lever 141 may be rotated to allow a portion of the control block 142 to be inserted into the slot 1223, and another portion of the control block 142 is still located in the first slot 1412, but since the slot 1223 includes the inclined wall 1221, the control block 142 may abut against the inclined wall 1221, and when the control block 142 abuts against the inclined wall 1221, the rotation of the second control seat 120 in the second direction may be limited, so as to ensure that the airway stent does not contract under the pressure of the airway of the user, and further ensure that the airway stent can be temporarily held for a period of time in the expanded state.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An airway stent delivery device, comprising:

2. The airway stent delivery device according to claim 1, wherein a groove is formed in a central position of the first control seat, a first control tube is arranged on the first control seat, the first control tube is located in the groove, the first control tube is arranged coaxially with the groove, and an opening is formed in a side wall of the first control tube; a second control tube is arranged on the second control seat, the second control tube is clamped in the groove and sleeved outside the first control tube, a plurality of clamping grooves are formed in the inner wall of the second control tube, and the plurality of clamping grooves are formed along the circumferential direction of the second control tube;

3. The airway stent delivery device according to claim 2, wherein the restriction structure further comprises a torsion spring, two ends of the torsion spring are respectively connected with the control block and the first control tube, and the torsion spring makes the free end of the control block have a tendency to rotate towards the control rod.

4. The airway stent delivery device according to claim 3, wherein the control block is curved on the side facing the control rod, and the diameter of the circle corresponding to the curved surface is larger than the diameter of the control rod;

5. The airway stent delivery device according to claim 4, wherein the recess depth of the first recess gradually decreases in the first direction such that when the lever is rotated in the first direction, the control block enters the notch, and when the lever is rotated in the second direction, the control block leaves the notch and enters the first recess.

6. The airway stent delivery device according to claim 5, wherein the first abdicating groove comprises a first limiting portion and a second limiting portion, the first limiting portion and the second limiting portion are communicated with each other, the depth of the recess of the first limiting portion is gradually reduced along the direction departing from the second limiting portion, the side wall of the second limiting portion is arc-shaped, and the outer side of the arc-shaped is arranged towards the axis of the control rod.

7. The airway stent delivery device according to claim 4, wherein a first shifting block is arranged on the second control seat, a second shifting block matched with the first shifting block is arranged on the control rod, when the slider moves to one end of the arc-shaped groove deviating from the center of the control seat, the first shifting block shifts the second shifting block, so that the control rod rotates along with the second control seat along the first direction, and the control block is just clamped into the second abdicating groove.

8. The airway stent delivery device according to claim 2, wherein a plurality of the catching grooves are continuously provided along a circumferential direction of the second control tube, the catching grooves include a sloped wall and a vertical wall, the vertical wall is provided along a radial direction of the second control tube, and the sloped wall is provided obliquely to the vertical wall such that a depth of the catching grooves gradually decreases in the first direction.

9. The airway stent delivery device according to any one of claims 1 to 8, wherein the extension length of the arc-shaped groove in the radial direction of the second control seat is greater than or equal to the extension length of the strip-shaped groove in the radial direction of the second control seat.

10. The airway-stent delivery device of any one of claims 1-8, wherein the first control seat has a circular cross-section, the second control seat is coaxially disposed with the first control seat, and the second control seat has a diameter smaller than the first control seat.