CN115253027B

CN115253027B - Multichannel vascular sheath

Info

Publication number: CN115253027B
Application number: CN202210890583.4A
Authority: CN
Inventors: 刘炼; 黄菊芳; 杨登峰; 姚凯; 王征; 徐宏博; 王智超; 薛碧晨; 杨玉红; 曾乐平; 刘曙
Original assignee: Third Xiangya Hospital of Central South University
Current assignee: Third Xiangya Hospital of Central South University
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2024-05-24
Anticipated expiration: 2042-07-27
Also published as: CN115253027A

Abstract

The invention provides a multichannel vascular sheath, which comprises a sheath tube and a sheath tube seat, wherein a cavity is formed in the sheath tube seat, the sheath tube comprises a front end and a rear end, the rear end of the sheath tube is communicated with the cavity, the cavity is simultaneously communicated with a first hose extending to the outside, the outer end of the first hose is provided with a multi-way valve, a detour channel is formed in the sheath tube seat, and the tail end of the detour channel extends out of the sheath tube and faces the rear end of the sheath tube. The invention makes the guide wire turn around and lead in more smoothly by virtue of the arrangement of the roundabout channel, is particularly beneficial to turning around the guide wire in the tiny blood vessel and leading the guide wire into the branch blood vessel at the side from the branch blood vessel, is convenient for radiography, makes the positions of the vessel sheath, the guide wire and the like and the relation with the vessel cavity more definite, effectively improves the reliability of the guide wire turn around and lead in and the convenience of operation, and avoids the damage and uncertainty caused by repeated puncturing the blood vessel.

Description

Multichannel vascular sheath

Technical Field

The invention relates to the technical field of vascular sheaths, in particular to a multichannel vascular sheath.

Background

Minimally invasive interventional therapy is a minimally invasive technique in which instruments or drugs are placed into diseased tissue with minimal trauma under the guidance of medical imaging equipment, and are subjected to physical, mechanical or chemical treatment. Interventional therapy requires the establishment of a passageway from outside the body into the vessel, percutaneous insertion of the vessel sheath into the vessel, and delivery of the device or drug through the vessel sheath to the lesion site for treatment. In the prior art, a vascular sheath generally comprises a sheath tube and a sheath tube seat which are communicated, a cavity in the sheath tube seat is communicated with the outside through a hose, and a multiway valve is arranged at the outer end of the hose, so that the hose can be used for completing blood drawing in an operation or injecting medicines into the blood vessel.

During surgery, it is sometimes necessary to introduce a guidewire in the opposite direction or into a side branch vessel. The steering of the guide wire cannot be completed by adopting a conventional vascular sheath, so that vascular puncture needs to be carried out again and a new guide wire needs to be introduced, the number of vascular puncture times is increased, the mistaken damage to a human body is caused, and the operation time is prolonged due to the uncertainty of operation. In the prior art, some vascular sheaths capable of steering a guide wire exist, however, a steering control structure of the vascular sheaths is usually positioned at the distal end of a sheath tube, so that not only is steering operation complicated, but also uncertainty and damage to a vascular wall in a guide wire rotating process are caused, and the steering of the guide wire is difficult to finish in a tiny blood vessel, and further improvement is needed.

Disclosure of Invention

The present invention aims to overcome the above-mentioned drawbacks of the prior art and provide a vascular sheath that can perform guidewire steering more optimally.

In order to achieve the above object, the present invention provides a multi-channel vascular sheath, comprising a sheath tube and a sheath tube holder, wherein a cavity is formed inside the sheath tube holder, the sheath tube comprises a front end and a rear end, the rear end of the sheath tube is communicated with the cavity, the cavity is simultaneously communicated with a first hose extending to the outside, and the outer end of the first hose is provided with a multi-way valve.

Further, the circuitous channel is arranged in a U shape.

Further, the circuitous channel is embedded in the cavity and the inner wall of the sheath.

Further, the head end of the detour channel is communicated with a second hose, and the outer end of the second hose is provided with a multi-way valve.

Further, contrast agents can be injected into the detour channel, and the correlation between the vascular sheath and the subsequent guide wire and the vascular cavity can be determined.

The scheme of the invention has the following beneficial effects:

the multichannel vascular sheath provided by the invention enables the guide wire to turn around and be guided smoothly by virtue of the arrangement of the roundabout channel, is particularly beneficial to turning around the guide wire in a tiny blood vessel and guiding the guide wire into a side branch blood vessel from the branch blood vessel, and effectively improves the reliability of the guide wire for turning around and guiding in and the convenience of operation, thereby improving the effect of operation implementation;

According to the invention, contrast agent can be filled in the detour channel to contrast the vascular sheath, so that the positions of the vascular sheath, the guide wire and the like and the relation between the vascular sheath and the vascular cavity are more definite, the accuracy of operation is further improved, and the operation is more convenient and quicker;

Other advantageous effects of the present invention will be described in detail in the detailed description section which follows.

Drawings

FIG. 1 is a schematic overall structure of embodiment 1 of the present invention;

FIG. 2 is a schematic illustration of a bifurcation of an implanted vessel in accordance with example 1 of the present invention;

Fig. 3 is a schematic overall structure of embodiment 2 of the present invention.

[ Reference numerals description ]

1-Sheath tube; 2-sheath holder; 3-cavity; 4-a first hose; a 5-multi-way valve; 6-detour channel; 7-an elastic seal; 8-a second hose.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a locked connection, a removable connection, or an integral connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

The invention relates to the technical field of vascular sheaths, a conventional vascular sheath generally comprises a sheath tube 1 and a sheath tube seat 2 which are communicated, a cavity 3 in the sheath tube seat 2 is communicated with the outside through a hose, a multi-way valve 5 is arranged at the outer end of the hose, and the hose can be used for completing blood drawing in an operation or injecting medicines into a blood vessel and the like. During surgery, it is sometimes necessary to introduce a guidewire in the opposite direction or into a side branch vessel. The steering of the guide wire cannot be completed by adopting a conventional vascular sheath, so that venipuncture needs to be carried out again and a new guide wire needs to be introduced, and the venipuncture times and the operation time are increased. Some vascular sheaths exist in the prior art, which can turn the guide wire, however, a steering control structure is usually arranged at the distal end of the sheath tube 1, so that not only is the steering operation complex, but also the steering of the guide wire is difficult to complete in a tiny blood vessel. Based on this, embodiment 1 of the present invention provides a multichannel vascular sheath, aiming at solving the above-mentioned problems.

As shown in fig. 1, the multichannel vascular sheath includes a sheath tube 1 and a sheath hub 2. Wherein, sheath tube seat 2 inside is provided with cavity 3, and sheath tube 1 includes front end and rear end, and the rear end and the tip intercommunication of cavity 3 of sheath tube 1, cavity 3 simultaneously with extend to outside first hose 4 intercommunication, the outer end of first hose 4 has multipotency valve 5 for to vascular target position guide wire, expansion pipe, apparatus etc. just can connect relevant equipment and draw blood or inject medicine etc. to the cavity.

The conventional guide wire is introduced into the cavity 3 of the sheath tube base 2 from the first hose 4, enters the rear end of the sheath tube 1 from the end part of the cavity 3, and finally is led out from the front end of the sheath tube 1. When the vascular sheath is implanted in a blood vessel, it is difficult to perform a reverse operation of the guidewire at the position, and it is particularly necessary to introduce the guidewire reversely into a small blood vessel or to introduce the guidewire from a branched blood vessel to a branched blood vessel at the side. Therefore, in the present embodiment, a detour passage 6 is formed inside the sheath hub 2, and the end of the detour passage 6 extends out of the sheath 1 and toward the rear end of the sheath 1.

The normal guide wire introduction process is as described above, and when the guide wire needs to be reversely introduced, the guide wire can be led out of the circuitous channel 6 through the circuitous channel 6, and the direction of the guide wire after entering the vascular cavity is towards the rear end of the sheath tube 1, so that the guide wire is reversely introduced. During specific operation, the guide wire is inserted from the head end of the circuitous channel 6, can pass along the circuitous channel 6, and is turned around and led out from the tail end of the circuitous channel 6.

Through the arrangement of the roundabout channel 6, the turning and steering of the vascular sheath guide wire are smoother, the operation is convenient, and the reliability and the efficiency of the operation implementation are further improved.

In the preferred embodiment, the detour channel 6 is provided in a U-shape, so that it is naturally ensured that the end of the detour channel 6 is turned around relative to the head end, and the guide wire is guided in a detour. Of course, in other embodiments, other forms of circuitous channel 6 may be used, as long as it is ensured that the guidewire turns around after entering the lumen of the vessel. The U-shaped structure is preferable because the U-shaped structure is simple and the guide wire can be deformed as smoothly as possible.

In this embodiment, the detour channel 6 is embedded in the cavity 3 and the inner wall of the sheath tube 1, i.e. forms an integral structure, which makes the whole more compact and avoids blocking and affecting the channel in the vascular sheath.

In the present embodiment, the leading end and the tail end of the detour channel 6 are located on two sides, respectively, and the phase angle is preferably 180 degrees, i.e. the two ends of the detour channel 6 are spaced as far apart as possible. By adopting the structural form, on one hand, the detour path of the guide wire can be smoother, and the guide wire is prevented from being blocked; on the other hand, this configuration enables a reliable and easy introduction of the guidewire from the branch vessel to the side branch vessel without the need for re-puncturing the main or side branch vessel, as shown in fig. 2. In operation, the implantation of the vascular sheath is completed through the puncture of the branch vessel, so that the sheath tube 1 is positioned in the main branch vessel, and the tail end of the detour channel 6 is positioned at the bifurcation of the vessel and aligned with the side branch vessel. After the guide wire introduced from the branch vessel enters the detour channel 6, detour is completed along the detour channel 6, and finally the guide wire is led out from the tail end of the detour channel 6. Since the end of the detour passage 6 is close to (aligned with) the side branch vessel, the guide wire guided out of the port can enter the side branch vessel exactly when continuing to move, and thus the guide wire introduction from the branch vessel to the side branch vessel can be completed smoothly.

As a further improvement, in this embodiment, elastic sealing members 7 are uniformly arranged at two ends of the circuitous channel 6 to seal the two ends of the circuitous channel 6, so that blood and the like cannot enter the circuitous channel 6 when the vascular sheath is used normally. When the guide wire needs to be led in a roundabout way, the elastic sealing piece 7 is made of a material easy to penetrate, so that the guide wire can be controlled to directly penetrate.

As a preferred embodiment, the elastic sealing member 7 in this embodiment is a silica gel sealing sheet, the middle part of the silica gel sealing sheet is provided with a penetrating seam, the silica gel sealing sheet has good sealing performance when not deformed, and the penetrating seam in the middle part can ensure smooth penetration of guide wires, instruments and the like after deformation.

When the vascular sheath provided by the embodiment is adopted, firstly, venipuncture is carried out (branch blood vessel) and a guide wire passes through a vein, and then the guide wire is implanted into the vascular sheath, so that the vascular sheath reaches a preset position. After the vascular sheath is in place, the guide wire is taken out, and the device or the medicine can be delivered to the lesion site through the vascular sheath. When the guide wire is required to be reintroduced reversely, the guide wire is reversely introduced through the detour channel 6 of the vascular sheath, so that the guide wire moves towards the other end of the blood vessel or enters a side branch blood vessel, and then the subsequent operation is carried out.

Example 2:

Also as shown in fig. 3, embodiment 2 of the present invention provides another multichannel vascular sheath, which is mainly different from embodiment 1 in that the head end of the detour channel 6 communicates with the second hose 8, the second hose 8 is similar to the first hose 4, can be extended to the outside of the blood vessel, and a multi-way valve 5 can be provided as well.

With this structure, compared with the embodiment 1, the subsequent guide wire can be guided more conveniently from the second hose 8. The interface between the second hose 8 and the detour channel 6 can ensure that the guide wire enters the detour channel, so that the arrangement of the detour channel 6 is more reasonable, U-shaped and the like are not needed, and the smoothness of the guide wire during guiding is further improved.

The bypass channel 6 may be a separate chamber in the vascular sheath, and the chamber may be filled with a specific substance to achieve a specific purpose. For example, the bypass passage 6 may be filled with a contrast medium, and the contrast medium may be injected through the second tube 8. Therefore, the angiography can be performed on the vascular sheath through the contrast agent, so that the positions of the vascular sheath, the guide wire and the like and the relation between the vascular sheath and the vascular lumen are more definite, the accuracy of operation is further improved, and the operation is more convenient and quicker.

Likewise, to ensure that the detour channel 6 is an independent chamber, in this embodiment, the end of the detour channel 6 is also provided with an elastic sealing element 7, the elastic sealing element 7 is preferably a silicone sealing sheet, and a through seam is formed in the middle of the silicone sealing sheet. Therefore, the contrast medium injected into the bypass passage 6 can be stored in the bypass passage 6 in a sealed manner, and does not enter the blood vessel or the like.

Of course, the elastic sealing member 7 is not required, and the processing and manufacturing difficulties can be reduced. Saline or the like may be injected into the detour channel 6, and blood in the blood vessel is prevented from flowing back along the detour channel 6 under the effect of pressure balance.

While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.

Claims

1. A multichannel vascular sheath, comprising a sheath tube and a sheath tube seat, wherein a cavity is formed in the sheath tube seat, the sheath tube comprises a front end and a rear end, the rear end of the sheath tube is communicated with the cavity, the cavity is simultaneously communicated with a first hose which extends to the outside, and the outer end of the first hose is provided with a multi-way valve;

The circuitous channel is arranged in a U shape;

The circuitous channel is embedded in the cavity and the inner wall of the sheath.

2. The multi-channel vascular sheath of claim 1, wherein the head end of the circuitous channel communicates with a second hose having a multi-way valve at an outer end thereof.

3. A multi-channel vascular sheath according to claim 1, wherein contrast agent can be injected into the circuitous channel to determine the relationship between the vascular sheath and the subsequent guidewire and lumen.