阅读说明：本技术 支架辅助放置装置及其使用方法 (Auxiliary placement device for stent and using method thereof ) 是由 苏剑云 谢洪涛 何占元 于 2020-05-15 设计创作，主要内容包括：本发明公开了一种支架辅助放置装置及其使用方法,它用于将支架放置于支架输送装置的外管和芯管之间,它包括连接件,所述连接件适于安装在支架输送装置上,所述连接件具有一通道,所述通道的至少部分具有在连接件装于支架输送装置上后由近端向远端方向逐渐收口的收口段；其中,当连接件装于支架输送装置上后,所述支架适于经过收口段后进入外管和芯管之间的容置空间。本发明能够将支架快速装入支架输送装置内,避免支架预安装在支架输送装置中由于保存条件不当导致支架的薄膜粘接而无法正常打开的现象。(The invention discloses a stent auxiliary placing device and a using method thereof, which are used for placing a stent between an outer tube and a core tube of a stent conveying device and comprise a connecting piece, wherein the connecting piece is suitable for being installed on the stent conveying device and is provided with a channel, and at least part of the channel is provided with a closing section which gradually closes from a near end to a far end after the connecting piece is installed on the stent conveying device; when the connecting piece is arranged on the bracket conveying device, the bracket is suitable for entering the accommodating space between the outer tube and the core tube after passing through the closing-up section. The invention can quickly load the bracket into the bracket conveying device, and avoids the phenomenon that the bracket is pre-installed in the bracket conveying device and cannot be normally opened due to the adhesion of the film of the bracket caused by improper storage conditions.)

1. A stent placement aid for placing a stent (10) between an outer tube (20) and a core tube (30) of a stent delivery device, comprising:

the connecting piece (1), the said connecting piece (1) is suitable for installing on the conveying appliance of the support, the said connecting piece (1) has a channel, at least part of the said channel has closing off the section (11) from proximal end to distal end direction closing off gradually after the connecting piece (1) is installed on conveying appliance of the support; wherein the content of the first and second substances,

when the connecting piece (1) is arranged on the bracket conveying device, the bracket (10) is suitable for entering the accommodating space between the outer pipe (20) and the core pipe (30) after passing through the closing section (11).

2. The stent assisted placement device of claim 1,

the closing-in section (11) is arranged at the inlet part of the channel;

and/or the closing-in section (11) is a taper hole;

and/or the connecting piece (1) is of a transparent structure.

3. The stent assisted placement device of claim 1,

the channel further has a delivery through-hole section (12), the mouth-closing section (11) and the delivery through-hole section (12) being arranged from the proximal end in the distal direction.

4. The stent assisted placement device of claim 1,

when the connecting piece (1) is arranged on the bracket conveying device, the channel is communicated with the accommodating space between the outer pipe (20) and the core pipe (30) so that the bracket (10) enters the accommodating space between the outer pipe (20) and the core pipe (30).

5. The stent assisted placement device of claim 4,

when the connecting piece (1) is arranged on the bracket conveying device, the cavity of the outer tube (20) is butted with the outlet of the channel, and the core tube (30) penetrates through the channel so as to communicate the channel with the accommodating space between the outer tube (20) and the core tube (30).

6. The stent assisted placement device of claim 5,

the connecting piece (1) is further provided with an outer tube limiting hole (13) which is communicated with the channel and is suitable for clamping the outer tube (20) and is provided with a step surface which is abutted against the outer end surface of the outer tube (20) after the outer tube (20) is clamped in place.

7. The stent assisted placement device of claim 1,

the connecting piece (1) comprises two connecting pieces (100) which are connected together; wherein the content of the first and second substances,

one side of each of the two pairs of connecting pieces (100) is hinged, and the other side of each of the two pairs of connecting pieces (100) is inserted through at least one inserting mechanism after being overturned and assembled in place;

or two sides of the two pairs of connecting pieces (100) are respectively inserted through at least one inserting mechanism.

8. The stent assisted placement device of claim 7,

the grafting mechanism includes:

a docking pin (100 a) provided on any one of the docking pieces (100);

and an abutment hole (100 b) provided on the remaining one of the abutment members (100) and engaged with the shaft hole of the abutment pin (100 a).

9. The stent assisted placement device of claim 1,

also included is a support rod (2) adapted to be inserted into the lumen of the core tube (30) to avoid bending of the core tube (30) during insertion of the stent (10) into the stent delivery device.

10. The stent assisted placement device of claim 1,

also comprises an auxiliary sleeve (3) which is suitable for being sleeved on at least part of the outer tube (20) and is used for fixing the outer tube (20) through action in the process of placing the stent (10) into the stent delivery device.

11. The stent assisted placement device of claim 10,

the auxiliary sleeve (3) comprises:

the supporting outer tube (31), at least one pressing and kneading groove (31 a) is arranged on the supporting outer tube (31);

a flexible inner tube (32) arranged in the supporting outer tube (31), wherein the flexible inner tube (32) is suitable for fixing the outer tube (31) by applying force from a pressing and pinching groove (31 a) to enable the flexible inner tube (32) to be at least partially attached to the outer tube (31) after the auxiliary sleeve (3) is sleeved in at least part of the outer tube (20).

12. The stent assisted placement device of claim 11,

the flexible inner tube (32) is made of medical latex material.

13. A method of using a stent assisted placement device as defined in any of claims 1 to 9, the method comprising the steps of:

s1: pushing the core tube (30) out of the stent delivery device;

s2: mounting the connecting piece (1) on a bracket conveying device to enable the channel to be communicated with the accommodating space between the outer pipe (20) and the core pipe (30);

s3: the bracket (10) penetrates through the core tube (30), the distal end part of the bracket (10) is plugged into the closing section (11), the bracket (10) is conveyed to the distal end part of the bracket conveying device until the part of the distal end part of the bracket (10) enters the accommodating space between the outer tube (20) and the core tube (30), and the connecting piece (1) is removed;

s4: the outer tube (20) is fixed, and the stent (10) is continuously conveyed to the distal end part of the stent conveying device until the stent (10) is completely retracted into the accommodating space between the outer tube (20) and the core tube (30).

14. Use according to claim 13,

the method is carried out on the basis of a stent assisted placement device according to any of claims 10 to 12;

the method also comprises the following steps:

further included between step S1 and step S2 is: sleeving the auxiliary sleeve (3) into the outer tube (20);

in step S4, the outer tube (20) is fixed by the auxiliary sleeve (3).

Technical Field

The invention relates to a support auxiliary placement device and a use method thereof.

Background

At present, a nickel-titanium alloy self-expanding stent for non-blood vessels is pre-installed in a stent delivery device before leaving the factory, and the stent cannot be expanded normally due to the adhesion of a thin film on the surface when the stent is in a contracted state for a long time.

If the stent is not pre-installed in the stent delivery device, the physician can not easily install the stent in the site during the operation, firstly, the end part of the stent has more than ten branches, and the end part of the stent can not be completely inserted into the outer tube of the stent delivery device by bare hands. Secondly, the length direction of the contracted stent is longer, about 20 cm. The whole stent conveying device is difficult to shrink into the outer tube of the stent conveying device, the core tube of the stent conveying device is very likely to be bent or the outer tube is likely to deform, the whole set of instruments can be failed due to the above defects, and in addition, the doctor wears gloves in an operating room to operate, so that the difficulty of the above process is greatly increased.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides an auxiliary placement device for a support, which can quickly load the support into a support conveying device and avoid the phenomenon that the support cannot be normally opened due to the adhesion of a thin film of the support caused by improper storage conditions when the support is pre-installed in the support conveying device.

In order to solve the technical problems, the technical scheme of the invention is as follows: a stent placement aid for placing a stent between an outer tube and a core tube of a stent delivery device, comprising:

the connecting piece is suitable for being installed on the stent conveying device and is provided with a channel, and at least part of the channel is provided with a closing section which gradually closes from the near end to the far end after the connecting piece is installed on the stent conveying device; wherein the content of the first and second substances,

when the connecting piece is arranged on the bracket conveying device, the bracket is suitable for entering the accommodating space between the outer tube and the core tube after passing through the closing section.

Further, the closing-in section is arranged at the inlet part of the channel.

Further, the channel is also provided with a conveying through hole section, and the closing section and the conveying through hole section are arranged from the near end to the far end.

Further, after the connecting piece is arranged on the support conveying device, the channel is communicated with the accommodating space between the outer tube and the core tube so that the support enters the accommodating space between the outer tube and the core tube.

Further, after the connecting piece is arranged on the bracket conveying device, the cavity of the outer tube is butted with the outlet of the channel, and the core tube penetrates through the channel so as to communicate the channel with the accommodating space between the outer tube and the core tube.

Furthermore, in order to enable the connecting piece to be installed on the support conveying device, the connecting piece is further provided with an outer tube limiting hole which is communicated with the channel and suitable for clamping the outer tube and is provided with a step surface which is abutted against the outer end surface of the outer tube after the outer tube is clamped in place.

Further, the closing-in section is a taper hole.

Further, the connecting piece comprises two connecting pieces which are connected together; wherein the content of the first and second substances,

one side of each of the two pairs of connecting pieces is hinged, and the other side of each of the two pairs of connecting pieces is inserted through at least one inserting mechanism after being overturned and assembled in place;

or two sides of the two pairs of connecting pieces are respectively inserted through at least one inserting mechanism.

Further, the insertion mechanism includes:

a docking pin provided on any one of the docking pieces;

and the butt joint hole is arranged on the rest butt joint piece and matched with the butt joint pin shaft hole.

Further, in order to prevent the core tube from being bent and damaged when the support is installed in the support auxiliary placing device, the support auxiliary placing device further comprises a support rod which is suitable for being inserted into the cavity of the core tube so as to prevent the core tube from being bent in the process of placing the support in the support conveying device.

Further, the connecting piece is of a transparent structure.

Furthermore, in order to fix the outer tube and enable the support to be conveniently pushed into the accommodating space between the outer tube and the core tube, the support auxiliary placing device further comprises an auxiliary sleeve which is suitable for being sleeved on at least part of the outer tube and used for fixing the outer tube through action in the process of placing the support into the support conveying device.

Further, the auxiliary sleeve includes:

the supporting outer tube is provided with at least one pressing and kneading groove;

the flexible inner pipe is arranged in the supporting outer pipe and is suitable for enabling the flexible inner pipe to be at least partially attached to the outer pipe through force applied from the pressing and pinching groove after the auxiliary sleeve is sleeved into at least part of the outer pipe, and therefore the outer pipe is fixed.

Further, the flexible inner tube is made of medical latex material.

The invention also provides a using method of the auxiliary stent placement device, which comprises the following steps:

s1: pushing the core tube out of the bracket conveying device;

s2: mounting the connecting piece on the bracket conveying device to enable the channel to be communicated with the accommodating space between the outer pipe and the core pipe;

s3: the bracket penetrates through the core tube, the distal end part of the bracket is plugged into the closing-in section, the bracket is conveyed to the distal end part of the bracket conveying device until the part of the distal end part of the bracket enters the accommodating space between the outer tube and the core tube, and the connecting piece is taken down;

s4: and fixing the outer tube, and continuously conveying the support to the distal end part of the support conveying device until the support is completely retracted into the accommodating space between the outer tube and the core tube.

Further, the method is implemented based on a stent assisted placement device;

the method also comprises the following steps:

further included between step S1 and step S2 is: sleeving the auxiliary sleeve into the outer pipe;

in step S4, the outer tube is fixed by the auxiliary sleeve.

After the technical scheme is adopted, the invention has the following beneficial effects:

1. the auxiliary placement device for the bracket can quickly place the bracket into the bracket conveying device in an operating room on site, avoids the phenomenon that the bracket cannot be normally opened due to the adhesion of a film of the bracket caused by improper storage conditions when the bracket is pre-installed in the bracket conveying device, can greatly reduce the difficulty of installation when a doctor places the bracket by using the auxiliary placement device for the bracket, can quickly place the bracket in 2 minutes after being trained simply by using the auxiliary placement device for the bracket, and does not have any damage to instruments.

2. The closing-in section that sets up in the connecting piece among the supplementary placer of support can realize once only making in the whole outer tubes that get into support conveyor of support tip, efficient and to the support surface not damaged.

3. The auxiliary sleeve in the device can smoothly retract the support into the conveying device, and the phenomenon that the outer pipe of the conveying device is bent or deformed is avoided.

4. The support rod in the device can avoid the bending phenomenon of the core tube of the support conveying device and can ensure the straightness of the support in the support conveying device.

Drawings

FIG. 1 is an assembled view of a stent placement aid of the present invention;

FIG. 2 is a perspective view of a first construction of a connector of the present invention;

FIG. 3 is a perspective view of a second construction of a connector of the present invention;

FIG. 4 is a perspective view of a third construction of a connector of the present invention;

FIG. 5 is a structural cross-sectional view of the connector of the present invention;

FIG. 6 is a perspective view of an auxiliary sleeve according to a first configuration of the present invention;

fig. 7 is a perspective view of an auxiliary sleeve according to a second structure of the present invention.

Detailed Description

In order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.