阅读说明：本技术 一种瓣膜脱钩机构及一种瓣膜输送装置 (Valve unhooking mechanism and valve conveying device ) 是由 虞奇峰 于 2019-12-12 设计创作，主要内容包括：本发明公开了一种瓣膜脱钩机构及一种瓣膜输送装置,其中瓣膜脱钩机构包括安装壳体以及滑动设置在安装壳体内的固定筒；所述安装壳体上开设有安装槽,所述固定筒的外壁上开设有限位槽,所述固定筒外套设有限位件,所述限位件卡合在所述限位槽内,且所述限位件在可移动的设置于所述安装槽内,所述限位件上开设有限位孔；所述瓣膜脱钩机构进一步包括：限位机构,穿过所述限位孔以对所述限位件进行限位；弹性件,设置在所述安装壳体内,在第一状态时,所述弹性件使所述限位机构插入所述限位孔；在第二状态时,所述外管移动机构可作用于所述限位机构使其抵抗弹性件的弹性力退出限位孔。(The invention discloses a valve unhooking mechanism and a valve conveying device, wherein the valve unhooking mechanism comprises an installation shell and a fixed cylinder arranged in the installation shell in a sliding manner; the mounting shell is provided with a mounting groove, the outer wall of the fixed cylinder is provided with a limiting groove, the fixed cylinder is sleeved with a limiting part, the limiting part is clamped in the limiting groove and movably arranged in the mounting groove, and the limiting part is provided with a limiting hole; the valve unhooking mechanism further comprises: the limiting mechanism penetrates through the limiting hole to limit the limiting piece; the elastic piece is arranged in the mounting shell, and in a first state, the elastic piece enables the limiting mechanism to be inserted into the limiting hole; in the second state, the outer tube moving mechanism can act on the limiting mechanism to enable the limiting mechanism to resist the elastic force of the elastic piece to exit from the limiting hole.)

1. A valve unhooking mechanism is used for being matched with an outer tube moving mechanism to complete valve unhooking operation; the valve unhooking mechanism comprises an installation shell and a fixed cylinder arranged in the installation shell in a sliding manner; the installation casing is provided with a mounting groove, the outer wall of the fixed cylinder is provided with a limiting groove, the outer sleeve of the fixed cylinder is provided with a limiting part, the limiting part is clamped in the limiting groove, and the limiting part is movably arranged in the mounting groove, and the installation casing is characterized in that:

the limiting piece is provided with a limiting hole;

the valve unhooking mechanism further comprises:

the limiting mechanism penetrates through the limiting hole to limit the limiting piece;

the elastic piece is arranged in the mounting shell, and in a first state, the elastic piece enables the limiting mechanism to be inserted into the limiting hole; in the second state, the outer tube moving mechanism can act on the limiting mechanism to enable the limiting mechanism to resist the elastic force of the elastic piece to exit from the limiting hole.

2. The valve unhooking mechanism of claim 1, wherein: the elastic piece is arranged between the mounting shell and the limiting mechanism and used for abutting against the limiting structure, so that the limiting mechanism is inserted into the limiting hole to limit the limiting piece in a first state;

or;

two ends of the elastic piece are respectively connected to the fixed cylinder and the limiting mechanism and used for maintaining the limiting mechanism to be inserted into the limiting hole, so that the limiting mechanism limits the limiting piece in a first state.

3. The valve unhooking mechanism of any one of claims 1 or 2, wherein: the stop gear includes:

the plug pin is formed by a butting part and a plug pin part connected with the butting part, and the plug pin is inserted into the limiting hole to limit the limiting part;

and one end of the push rod is connected to the plug pin, and the other end of the push rod penetrates through the fixed cylinder and reaches the outside of the fixed cylinder to be matched with the outer pipe moving mechanism to push the plug pin to exit from a limiting state.

4. The valve unhooking mechanism of claim 1, wherein: the installation shell comprises a shell and a handle, and the handle is clamped with the shell.

5. The valve unhooking mechanism is characterized by further comprising a mounting cylinder, wherein one end, opposite to the handle, of the fixing cylinder is inserted into the mounting cylinder, and the side walls of the fixing cylinder and the handle, located at one end of the mounting cylinder, are respectively sleeved with a first sealing ring.

6. The valve unhooking mechanism according to claim 1, wherein an elastic body is disposed in the mounting groove and is used for abutting against the limiting member so that the limiting member is clamped in the limiting groove.

7. A heart valve delivery device, comprising the valve unhooking mechanism of any one of claims 1-6, a limiting tube, a plurality of guide wires, and an outer tube moving mechanism connected to the valve unhooking mechanism;

the limiting pipe is connected with the fixing barrel, a movable hole is formed in the limiting pipe, one end of each guide wire is connected to the handle, and the other end of each guide wire penetrates through the movable hole and is connected with the fixing claw.

And a sealing pin is connected in the outer tube moving structure, and when the sealing pin pushes the limiting mechanism until the limiting piece exits from the limiting state, the fixing cylinder is moved, so that the fixing claws are exposed out of the special-shaped tube to separate the valve from the conveyor.

8. The heart valve delivery device of claim 7, further comprising a special tube connected to the limiting tube, wherein an end of the guide wire away from the handle sequentially passes through the limiting tube and the special tube and is connected to the fixing claw.

9. A heart valve delivery device as claimed in claim 8, wherein the side wall of the profiled tube is provided with a plurality of grooves.

10. A heart valve delivery device as claimed in claim 9, wherein the section of the guide wire located in the profiled tube is a structure with two enlarged ends and a thin middle.

11. A heart valve delivery device as claimed in claim 8 or 9, wherein a visualization ring is attached to the end of the tube remote from the retention tube.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a valve unhooking mechanism and a valve conveying device.

Background

The heart is a very important organ of a human body and provides power for blood circulation of the human body, the heart is divided into a left part and a right part, each part comprises a ventricle and an atrium, the ventricle and the atrium are separated by a ventricular septum and an atrial septum, and valves for preventing blood backflow are arranged among the atrium, the ventricle and the artery. The valve between the left atrium and the left ventricle is a mitral valve, the valve between the right atrium and the right ventricle is a tricuspid valve, the valve between the left ventricle and the aorta is an aortic valve, and the valve between the right ventricle and the pulmonary artery is a pulmonary valve.

The valves open and close in response to the contraction and relaxation of the heart, and therefore the valves of the heart must withstand prolonged squeezing of the blood and the surrounding annulus and flushing of the blood. If the valve fails to close completely or opens insufficiently due to disease or other causes, it will result in blood backflow and inadequate blood flow supply. Such as: for the heart valve diseases, the traditional treatment method is to stop the heart after opening the chest, open the heart to carry out surgical repair of the valve or replacement of the artificial valve under the support of low-temperature systemic circulation, then rebound the heart after the operation is finished, and finish the subsequent operation. Surgical valve replacement surgery has large trauma and long recovery time of patients, so that the old patients are often contraindicated to surgery due to the old, weak constitution, serious disease or combination of other diseases.

Minimally invasive surgical techniques are continuously developed, wherein a heart valve prosthesis can be introduced into a patient through a catheter, namely, the heart valve is placed through minimally invasive intervention surgery, and the chest is not required to be opened in the surgery, so that the trauma is small, the postoperative recovery is fast, and a new solution is provided for heart valve stenosis patients who cannot prolong the lives or relieve the pains of the patients through conventional treatment means at present. At present, the process of implanting the intervention type artificial heart valve into the body usually depends on a certain delivery device to deliver the intervention type artificial heart valve to a predetermined position for release.

In the actual use process of the existing valve conveying device, the inner tube can be driven to move by pressing down the release control piece, but the release control piece is easily pressed by mistake to drive the inner tube to move, so that the valve support is released, and the valve unhooking mechanism and the valve conveying device are provided.

Disclosure of Invention

The invention provides a valve unhooking mechanism and a valve conveying device, and aims to solve the technical problem that the release control part is easily pressed by mistake during conveying of the conventional heart valve conveying device, so that a heart valve is released.

The technical scheme provided by the invention is as follows:

a valve unhooking mechanism is used for being matched with an outer tube moving mechanism to complete valve unhooking operation; the valve unhooking mechanism comprises an installation shell and a fixed cylinder arranged in the installation shell in a sliding manner; the mounting shell is provided with a mounting groove, the outer wall of the fixed cylinder is provided with a limiting groove, the fixed cylinder is sleeved with a limiting part, the limiting part is clamped in the limiting groove and movably arranged in the mounting groove, and the limiting part is provided with a limiting hole; the valve unhooking mechanism further comprises: the limiting mechanism penetrates through the limiting hole to limit the limiting piece; the elastic piece is arranged in the mounting shell, and in a first state, the elastic piece enables the limiting mechanism to be inserted into the limiting hole; in the second state, the outer tube moving mechanism can act on the limiting mechanism to enable the limiting mechanism to resist the elastic force of the elastic piece to exit from the limiting hole.

In the technical scheme, by arranging the limiting mechanism, when the valve is not unhooked, the limiting mechanism is inserted into the limiting hole to limit the limiting part, so that the limiting part is not mistakenly pressed, and the safety of a doctor in the operation process is improved.

Preferably, the elastic element is arranged between the mounting shell and the limiting mechanism and used for abutting against the limiting structure, so that the limiting mechanism is inserted into the limiting hole to limit the limiting element in the first state;

or;

two ends of the elastic piece are respectively connected to the fixed cylinder and the limiting mechanism and used for maintaining the limiting mechanism to be inserted into the limiting hole, so that the limiting mechanism limits the limiting piece in a first state.

Preferably, the limiting mechanism comprises:

the plug pin is formed by a butting part and a plug pin part connected with the butting part, and the plug pin is inserted into the limiting hole to limit the limiting part;

and one end of the push rod is connected to the plug pin, and the other end of the push rod penetrates through the fixed cylinder and reaches the outside of the fixed cylinder to be matched with the outer pipe moving mechanism to push the plug pin to exit from a limiting state.

In this technical scheme, stop gear specifically sets up to bolt and push rod, and the sealed round pin through in the outer tube moving mechanism promotes the push rod through the design of bolt and push rod, causes the push rod to drive the bolt motion, makes it release spacing hole to relieve the spacing to the locating part.

Preferably, the mounting housing includes a housing and a handle that is snap-fitted to the housing.

Preferably, the sealing device further comprises an installation cylinder, one end, opposite to the handle, of the fixed cylinder is inserted into the installation cylinder, and the side walls of the end, located in the installation cylinder, of the fixed cylinder and the handle are respectively sleeved with a first sealing ring.

In this technical scheme, through setting up first sealing washer, can play better sealed effect on the one hand, be favorable to the evacuation, on the other hand the first sealing washer that sets up on the solid fixed cylinder produces the damping and feels when the solid fixed cylinder removes to prevent the valve unhook too fast.

Preferably, an elastic body is arranged in the mounting groove and used for abutting against the limiting piece so that the limiting piece is clamped in the limiting groove.

A heart valve conveying device comprises any one of the valve unhooking mechanisms, a limiting pipe, a plurality of guide wires and an outer pipe moving mechanism connected to the valve unhooking mechanism;

the limiting pipe is connected with the fixing barrel, a movable hole is formed in the limiting pipe, one end of each guide wire is connected to the handle, and the other end of each guide wire penetrates through the movable hole and is connected with the fixing claw.

And a sealing pin is connected in the outer tube moving structure, and when the sealing pin pushes the limiting mechanism until the limiting piece exits from the limiting state, the fixing cylinder is moved, so that the fixing claws are exposed out of the special-shaped tube to separate the valve from the conveyor.

In the technical scheme, the outer tube moving mechanism is moved by matching with the outer tube mechanism, so that the sealing pin in the outer tube moving mechanism can be driven to push the push rod in the limiting mechanism, the limiting mechanism is enabled to exit from a limiting state, the valve can be unhooked at the moment, and misoperation is prevented.

Preferably, the special-shaped tube is connected to the limiting tube, and one end, far away from the handle, of the guide wire sequentially penetrates through the limiting tube and the special-shaped tube and is connected with the fixing claw.

Preferably, a plurality of grooves are formed in the side wall of the special pipe.

In the technical scheme, the grooves are formed in the special-shaped pipes, so that the special-shaped pipes can be bent towards a single direction when being used, the middle parts of all the special-shaped pipes are ensured to be bent outwards, and the valves can be well unfolded when being released.

Preferably, the section of the guide wire positioned in the special-shaped tube is a structure with two expanded ends and a thin middle part.

Preferably, one end of the special pipe, which is far away from the limiting pipe, is connected with a developing ring.

In the technical scheme, the end part of the special pipe is provided with the developing ring, so that a doctor can develop and observe in real time in the operation process.

Compared with the prior art, the valve unhooking mechanism and the valve delivery device provided by the embodiment of the invention have the following beneficial effects:

1. according to the invention, the limiting mechanism is arranged in the mounting shell, and the limiting mechanism is a limiting piece for limiting in the operation process, so that valve unhooking caused by mistaken pressing operation in the operation process is prevented, the rhythm of valve release can be well controlled in the valve implantation process, and premature release of the valve is prevented.

2. According to the invention, the mounting cylinder is sleeved at the end, opposite to the handle, of the fixed cylinder, so that the sealing performance is better compared with that of a common luer, the emptying effect can be better achieved, and on the other hand, the sealing ring on the fixed cylinder can bring a damping feeling when the limiting pipe moves, so that a doctor can well control the rhythm of releasing the valve, and the valve can not be too fast or too slow.

3. According to the invention, the special pipe is arranged and the groove is formed in the special pipe, so that the special pipe can be conveniently bent along the groove when the valve is released, the bending direction is single, the valve is ensured not to be twisted when the valve is released, and meanwhile, the valve can be better expanded.

4. According to the invention, the movable hole on the limiting tube is in clearance fit with the guide wire, and the clearance between the outer wall of the guide wire and the inner wall of the movable hole is very small, so that the guide wire can be ensured not to deform in the movable hole, and the phenomenon of asynchronism caused by guide wire deformation in the valve release process can be avoided.

Drawings

The foregoing features, technical features, advantages and implementations of a valve unhooking mechanism and a valve delivery device will be further described in the following detailed description of preferred embodiments in a clearly understandable manner in conjunction with the accompanying drawings.

FIG. 1 is a schematic cross-sectional view of a valve unhooking mechanism of the present invention;

FIG. 2 is a perspective view of a portion of the valve unhooking mechanism of the present invention;

fig. 3 is a schematic structural view of the special pipe of the present invention;

FIG. 4 is a structural schematic diagram of the mechanical tubes of the present invention in an unhooked state after being connected to the limiting tube;

FIG. 5 is a schematic structural view of the special pipe and the limiting pipe in a unhooking state after being connected;

FIG. 6 is a schematic view of a portion of a guidewire of the present invention;

FIG. 7 is a perspective view of a part of the outer tube moving mechanism of the present invention;

FIG. 8 is a schematic cross-sectional view of the fastener of the present invention after installation with a seal pin;

FIG. 9 is a schematic perspective view of the mounting member and seal pin of the present invention after installation;

FIG. 10 is a schematic perspective view of a seal pin according to the present invention;

FIG. 11 is a schematic view of the push tab of the seal pin of the present invention after contact with the stop strip;

fig. 12 is a schematic view of the engaged bite piece of the present invention;

FIG. 13 is a partial schematic view of the half-threaded member of the present invention;

FIG. 14 is a schematic view of the delivery device of the present invention in an unreleased, unhooked state;

FIG. 15 is a schematic view of a delivery transfer device according to the present invention in an unhooked valve condition.

The reference numbers illustrate: a housing 100, an upper shell 110, a lower shell 120, a handle 130;

the limiting device comprises a limiting tube 210, a fixed cylinder 220, a limiting groove 230, a button 240, a first spring 250, a bolt 260, a push rod 270, a second spring 280, a first sealing ring 290, a limiting member 2110 and an installation cylinder 2120;

a guide wire 300, a fixing claw 310 and a special pipe 320;

a threaded pipe 400, a half-threaded part 401, a barrier 402;

the sealing device comprises a fixing piece 510, a fin 520, a damping ring 530, a sealing pin 540, a sealing cylinder 541, a barb 542, a stop 543, a push piece 544, an outer tube 550, a screw cap 560, a joint 570, a barb ring 571, a sealing ring 580, an emptying tube 590 and a second sealing ring 5100;

the engaging piece 610, the self-locking spring 620, the unlocking button 630, the rotating shell 640 and the rotating groove 641;

a stationary case 700;

a tapered head 800;

tubule 900.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.

For the sake of simplicity, only the parts relevant to the invention are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".

According to one embodiment of the present invention, as shown in fig. 1, a valve unhooking mechanism is provided for cooperating with an outer tube moving mechanism to perform a valve unhooking operation; the valve unhooking mechanism comprises a mounting shell and a fixed cylinder 220 arranged in the mounting shell in a sliding manner; the mounting housing is provided with a mounting groove, the outer wall of the fixed cylinder 220 is provided with a limit groove 230 (not shown), the fixed cylinder 220 is externally sleeved with a limit piece 2110, the limit piece 2110 is clamped in the limit groove 230, the limit piece 2110 is movably arranged in the mounting groove (not shown), and the limit piece 2110 is provided with a limit hole (not shown); the valve unhooking mechanism further comprises: the limiting mechanism penetrates through the limiting hole to limit the limiting piece 2110; the elastic piece is arranged in the mounting shell, and enables the limiting mechanism to be inserted into the limiting hole in the first state; in the second state, the outer tube moving mechanism can act on the limiting mechanism to enable the limiting mechanism to exit the limiting hole against the elastic force of the elastic element, and the first state and the second state are both before the valve is unhooked.

As shown in fig. 2, in a specific implementation, the mounting housing includes a housing 100 and a handle 130, the housing 100 is formed by fastening an upper housing 110 and a lower housing 120, the handle 130 is fastened in the housing 100, the handle 130 is provided with a through hole, an inner side of a section of a limiting member 2110 is fastened in a limiting groove 230 to ensure that the fixing cylinder 220 can be fastened in use, an outer side of the limiting member 2110 is located in a mounting groove formed in the housing 100 to enable the limiting member 2110 to slide in the mounting groove, so as to ensure that the fixing cylinder 220 can be well limited, in this embodiment, referring to fig. 1 again, a button 240 is connected to the limiting member 2110, the button 240 can be integrally formed with the limiting member 2110 to facilitate good release, an elastic body is arranged in the mounting groove to support the limiting member 2110 to enable the limiting member 2110 to be fastened in the limiting groove 230, the elastic body is a first spring 250, one end of the first spring 250 abuts against the inner wall of the mounting groove, the other end of the first spring 250 abuts against the side wall of the limiting member 2110, the first spring 250 ensures that the limiting member 2110 can be always engaged with the limiting groove 230 without pressing the button 240, besides the first spring 250 in this embodiment, an elastic sheet can be disposed at the connection between the button 240 and the limiting member 2110, the elastic sheet is arc-shaped, the two ends of the elastic sheet are connected with the housing 100, when in the limiting state, the elastic sheet is arc-shaped, so as to ensure that the limiting member 2110 can play a limiting role for the fixed barrel 220, when the limiting is released, the button 240 is pressed, the elastic sheet is deformed, the limiting member 2110 is disengaged from the limiting groove 230, the hand is released, and the original state can be restored under the action of the elastic sheet, in this embodiment, the first spring 250 is selected as an elastic component for maintaining the limiting member 2110 to be engaged with the limiting groove 230, the first spring 250 is durable and is less likely to be damaged than the spring plate, which can improve the service life of the device.

Referring to fig. 1 again, in another embodiment of the present invention, the limiting mechanism specifically includes: the bolt 260, the bolt 260 is formed by a butt-joint part and a pin part connected to the butt-joint part, the pin is inserted in the spacing hole to limit the spacing piece; one end of the push rod 270 is connected to the latch 260, the other end of the push rod 270 passes through the fixed cylinder 220 and reaches the outside of the fixed cylinder 220, in a specific implementation, one end of the push rod 270, which is far away from the latch 260, is located at a stop strip 402 described below, so that a push sheet 544 described below is matched to push the latch 260 to exit a limiting state, and the push sheet 544 starts to push the push rod 270 when sweeping the stop strip 402, in this embodiment, the elastic member is a second spring 280, and the elastic member is provided at two positions, and the elastic member is provided between the mounting housing and the limiting mechanism and is used for abutting against the limiting structure, so that the limiting mechanism is inserted into the limiting hole to limit the limiting member 2110 in the first state (again shown; specifically, one end of the second spring 280 abuts against the abutting portion, and the other end of the second spring 280 abuts against the handle 130 described below, and at this time, the second spring 280 is in a compressed state.

Or both ends of the elastic member are respectively connected to the fixed cylinder 220 and the limiting mechanism for maintaining the limiting mechanism inserted into the limiting hole, so that the limiting mechanism limits the limiting member 2110 in the first state (not shown), in specific implementation, one end of the second spring 280 is connected to the plug pin 260, the other end of the second spring 280 is connected to the fixed cylinder 220, and at this time, the second spring is in a natural state or a stretched state.

Referring to fig. 1 again, in a specific implementation, the plug 260 is formed by an abutting portion and a plug pin portion perpendicular to the abutting portion, and the plug pin is inserted into the plug hole and extends into a limiting hole formed in the limiting member 2110 to limit the limiting member 2110; the contact pin is connected at the edge of butt portion, and the edge of butt portion is also connected to the one end of push rod 270, and the other end of push rod 270 passes fixed section of thick bamboo 220, and butt portion can be a platelike structure in this embodiment, has seted up the jack on the fixed section of thick bamboo 220, and the jack communicates with each other with spacing groove 230 to the contact pin can pass the jack and reach spacing downthehole, in order to carry on spacingly to locating part 2110.

Referring to fig. 1 again, in another embodiment of the present invention, a mounting barrel 2120 is further included, an opposite end of the fixing barrel 220 and an opposite end of the handle 130 are inserted into the same mounting barrel 2120, and a first sealing ring 290 is respectively sleeved on a side wall of one end of the fixing barrel 220 and an end wall of one end of the handle 130 located in the mounting barrel 2120, and the first sealing ring 290 can play a role in sealing on one hand and can bring a damping feeling when the fixing barrel 220 moves on the other hand, so as to ensure that a doctor can be stable during an operation process, compared with the existing luer handle 130.

As shown in fig. 14 and 15, a heart valve delivery device comprises any one of the valve unhooking mechanisms, a limiting tube 210, a plurality of guide wires 300 and an outer tube moving mechanism connected to the valve unhooking mechanism;

the limiting tube 210 is connected with the fixing tube 220, a movable hole is formed in the limiting tube 210, one end of each of the guide wires 300 is connected to the handle 130, and the other end of each of the guide wires 300 penetrates through the movable hole and is connected with the fixing claw 310.

The sealing pin 540 is connected in the outer tube moving structure, and when the sealing pin 540 pushes the push rod 270 until the latch 260 exits the limit state, the button 240 is pressed to move the fixed cylinder 220, so that the fixed claw 310 is exposed out of the special tube 320 to separate the valve from the transporter.

Wherein the outer tube moving structure is as shown in fig. 7 and 13, and comprises a threaded tube 400, the threaded tube is provided with a sliding hole, the inner wall of the threaded tube 400 is provided with a plurality of barrier strips 402, in the specific implementation, one end of the threaded tube 400 is connected with a fixed cylinder 220 in the valve unhooking mechanism, the other end of the threaded tube 400 is connected with a fixed shell 700, the threaded tube 400 is spliced together by two half-threaded parts 401, a sliding hole is formed at the splicing part of one section of the two half-threaded parts 401, the fixing part 510 can move along the sliding hole, the two half-threaded parts 401 are in central symmetry, and the thread shapes of the threads arranged on the threaded tube 400 have no inclination, so that the threads on the threaded tube 400 can not generate outward thrust to the matched threaded engaging part 610, the thread shapes of the half-threaded parts 401 at the same height are the same, and in the specific implementation, the two half-threaded parts 401 have the same shape and can be divided into, each petal is the same, so that half of the cost of the grinding tool is saved when the mold is opened, and manpower and material resources can be saved; the threaded pipe 400 formed by the two half-threaded parts 401 is a double-threaded pipe or a four-threaded pipe, the lead of the threaded pipe 400 is 6-16mm, the thread pitch of the threaded pipe is 3-8mm, but in the specific implementation, the lead is 12mm, the thread pitch is 6mm, the quick valve release effect can be realized, sliding grooves are formed in the inner walls of the two half-threaded parts 401, a plurality of blocking strips 402 are arranged in the sliding grooves, the adjacent blocking strips 402 are spaced at a certain distance, the sliding grooves are formed, so that the pushing sheet 544 described below is always located in the sliding grooves to slide, the pushing sheet 544 cannot be extruded and deformed with the inner walls of the half-threaded parts 401, and the pushing sheet 544 is protected.

As shown in fig. 7 and 12, the rotating mechanism disposed on the outer wall of the threaded pipe 400 and capable of engaging with the threads on the threaded pipe 400 includes a rotating housing 640 and a thread engaging mechanism connected in the rotating housing 640, the thread engaging mechanism is formed by two engaging members 610 that are connected in a staggered manner by self-locking elastic members, the self-locking elastic members enable the two engaging members 610 to engage with the threaded pipe 400, in this embodiment, the self-locking elastic members are self-locking springs 620, the two self-locking springs 620 are in a compressed state, the two engaging members 610 are in central symmetry, engaging teeth matched with the thread on the threaded pipe 400 are formed on the engaging members 610, during actual operation, it can be ensured that the two engaging members 610 are always engaged with the threaded pipe 400, when quick release is required, only the unlocking button 630 connected to the two engaging members 610 needs to be pressed, the two self-locking springs 620 are compressed and the two engaging members 610 are moved away from each other to ensure that the two engaging members 610 are separated from the outer wall of the threaded pipe 400, so that the fixing member 510 is driven to slide rapidly by rotating the housing 640, thereby driving the outer pipe 550 to move rapidly.

As shown in fig. 8 and 9, and the fixing member 510 is disposed in the threaded pipe 400, the rotating mechanism rotates or slides to drive the fixing member 510 to slide along the sliding hole, a sealing pin 540 is disposed in the fixing member 510, in a specific implementation, the sealing pin 540 includes a sealing cylinder 541, a second sealing ring 5100 is sleeved on a side wall of one end of the sealing pin 540 located in the fixing member 510, a water injection hole is opened on a side wall of one end of the fixing member 510 close to the outer pipe 550, one end of the fixing member 510 connected with an evacuation pipe 590 communicated with the water injection hole, and the other end of the evacuation pipe 590 penetrates through the sliding hole and reaches the outside of the threaded pipe 400; one end of the sealing barrel 541 is provided with a push piece 544, the push piece 544 is located in the sliding groove to slide, so that the barrier 402 is always located in the sliding groove and is not deformed for a long time and damaged, when the rotating mechanism drives the push piece 544 to push the barrier 402, as shown in fig. 11, the push piece 544 strikes the surface of the barrier 402, the push piece 544 sweeps the surface of the barrier 402 to generate a warning sound, and when the thread engagement mechanism is engaged on the threaded pipe 400, the thread engagement mechanism is rotated to drive the fixing member 510 to slowly slide along the sliding hole.

As shown in fig. 8 and 10, in the implementation, a side wall of the sealing cylinder 541 is provided with a barb 542 fixed on the side wall of the fixing member 510, the barb 542 is for better connecting the sealing pin 540 with the fixing member 510, and the sealing pin 540 is not easily separated from the fixing member 510 during the moving process. The side wall of the sealing barrel 541 connected with the push plate 544 is connected with a stop 543, and the stop 543 can ensure that the sealing pin 540 is mounted at a proper position when being mounted.

As shown in fig. 8 and 9, in another embodiment of the present invention, one end of two fins 520 is connected to a sidewall of the fixing member 510, the other end of the fin 520 penetrates through the sliding hole and is located in a rotating groove 641 formed in a rotating shell 640 of the thread engagement mechanism, and one end of the fin 520 located in the rotating groove 641 is connected to a damping ring 530.

A joint 570 is fixedly connected to one end of the fixing member 510 far away from the push plate 544, a sealing ring 580 is arranged at a contact position of the joint 570 and one end of the outer tube 550 to improve the sealing effect, the outer tube 550 is connected to the fixing member 510 through a nut 560 in a threaded manner, the side wall of the joint 570 is abutted against the inner wall of one end of the outer tube 550, and an inverted hook ring 571 is arranged on the outer wall of the joint 570

During the specific installation, a conical head 800 is connected to the limiting tube via a distal narrow tube 900, and the conical head 800 is used to guide the delivery device into the surgical site.

Referring to fig. 3-5 again, in another embodiment of the present invention, a special pipe 320 is further included, the special pipe 320 is connected to the limiting pipe 210, and one end of the guide wire 300 away from the handle 130 sequentially passes through the limiting pipe 210 and the special pipe 320 and is connected to the fixing jaw 310. The side wall of the special pipe 320 is provided with a plurality of grooves, so that when the valve is released, the special pipe 320 can be bent towards a single direction, the valve is easy to release and open, one end of the special pipe 320, which is far away from the limiting pipe 210, is connected with a developing ring, so that a doctor can conveniently perform developing observation in the operation process, and one section of the guide wire 300, which is positioned in the special pipe 320, is of a structure with two expanded ends and a thin middle part, so that the guide wire is beneficial to bending along with the special pipe 320 (as shown in fig. 6).

As shown in fig. 14 and 15, a conical head 800 is connected to the limiting tube via a distal tubule 900 during the specific installation, and the conical head 800 serves to guide the delivery device into the surgical site.

Based on the above embodiment, during loading, the outer tube moving mechanism is moved to make the push piece 544 push the push rod 270 on the valve unhooking mechanism, so that the contact pin in the plug pin 260 is separated from the limit position, the button 240 is pressed to move the limit tube 210, so that the fixed claw 310 is exposed, and then the valve is fixed on the fixed claw 310, because of the existence of the special-shaped tube 320, the valve is fixed by a plurality of special-shaped tubes 320 and the matched fixed claws 310, and is more easily unfolded when the valve is unfolded, then the valve hanging lug and the fixed claw 310 are together retracted into the special-shaped tube 320 by moving the limit tube 210, the special-shaped tube 320 and the valve are retracted into the outer tube 550, and the tapered head 800 is contacted with the outer tube 550 by moving the outer tube 550;

during delivery, a doctor extends the tip of the delivery device into an operation part, then slowly rotates the rotating shell 640 to drive the outer tube 550 to move, at the moment, the delivery device can move at a slow speed, when the doctor needs to quickly move the outer tube 550 in the operation process, the doctor can press the unlocking button 630 to quickly drive the outer tube 550 to move, when the outer tube 550 moves to the barrier strip 402, crisp sound is generated to warn the doctor to enter the position for releasing the valve, when the outer tube 550 moves to the push piece 544 to push the push rod 270, the bolt 260 slowly exits the limiting state at the moment, the limiting tube 210 can be moved by pressing the button 240 to release the limiting of the valve, at the moment, the valve unhooking state can be entered, and the doctor can perform quick release or slow release as required so as to perform valve recovery when the release position is incorrect.

It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.