CN112237501A

CN112237501A - Guide catheter

Info

Publication number: CN112237501A
Application number: CN202011156299.1A
Authority: CN
Inventors: 李乐乐; 杨云鹤
Original assignee: Shanghai Yuanchang Medical Technology Co ltd
Current assignee: Zhejiang guichuang Medical Technology Co.,Ltd.
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-01-19

Abstract

The application discloses guide pipe, including body and developing device, be provided with the blind hole on the body, developing device sets up the hole bottom department at the blind hole, seted up the side opening on the body, the side opening is located developing device department, and side opening intercommunication blind hole and this is external. The invention has the following beneficial effects: the guiding catheter ensures that the side hole can accurately reach the position near the branch blood vessel through the positioning function of the developing device, and meanwhile, the bending function of the blind hole and the side hole is that the guide wire is bent and folded into the branch blood vessel, so that the operation is convenient, and the guide wire can smoothly and quickly enter the branch blood vessel.

Description

Guide catheter

Technical Field

The invention relates to the field of vascular surgical instruments, in particular to a guide catheter.

Background

Stent grafts are often used to repair aortic dissections and aneurysms involving branches, and in order to repair diseased vessels while not covering major branch vessels, surgeons often employ fenestrations or chimneys. The fenestration or the chimney operation usually requires a guide wire to be introduced into a branch vessel, but the guide wire needs to be bent during the process of introducing the guide wire into the branch vessel, so that the guide wire is difficult to be introduced into the branch vessel, the time is long, and once the guide wire is failed, the guide wire has to be changed into an open operation.

Disclosure of Invention

The invention aims at the problems and provides a guide catheter.

The technical scheme adopted by the invention is as follows:

the utility model provides a guide catheter, includes body and developing device, be provided with the blind hole on the body, developing device sets up the hole bottom department at the blind hole, seted up the side opening on the body, the side opening is located developing device department, and the side opening intercommunication blind hole reaches this external.

The developing device is used for displaying the position of the side hole in the human body when the X-ray is irradiated on, so that the developing device can be a metal block or a plastic block.

The guide catheter has the following action principle that firstly the guide catheter moves in a blood vessel, because the developing device has a developing effect under an X-ray machine, and the side hole is positioned at the developing device, when the side hole reaches the joint of a main blood vessel and a branch blood vessel and faces the branch blood vessel, the guide wire is plugged into a blind hole, when the guide wire moves to the developing device, the guide wire can be bent to move to the side hole, and at the moment, the guide wire enters the branch blood vessel.

In conclusion, the guiding catheter ensures that the side hole can accurately reach the position near the branch blood vessel through the positioning action of the developing device, and meanwhile, the bending action of the blind hole and the side hole bends the guide wire and folds the guide wire into the branch blood vessel, so that the guiding catheter is convenient to operate, and the guide wire can smoothly and quickly enter the branch blood vessel.

Optionally, the blind hole is a linear blind hole, and the side hole is perpendicular to the blind hole.

The linear blind hole is convenient for inserting the guide wire, and the body is made of flexible materials and has certain flexibility, so that the blind hole is not always straight, and when the body is bent, the catheter is also bent.

Optionally, the body is provided with a through hole, and the through hole is parallel to the blind hole.

Optionally, the catheter device further comprises a catheter seat, the catheter seat is matched with the body, and a pore passage communicated with the blind hole and the through hole is formed in the catheter seat.

The purpose of arranging the catheter seat is to facilitate the guide wire to enter the through hole and the blind hole, because the aperture of the pore passage in the catheter seat is larger than the apertures of the through hole and the blind hole. The body is inserted and sleeved on the conduit seat.

Optionally, the body is a circular tube-shaped body, and one end of the body is in a circular truncated cone shape.

The round tubular body is convenient to rotate and adjust, so that the side hole faces to a branch blood vessel; and when the guiding catheter is positioned between the covered stent and the catheter, the guiding catheter can rotate left and right and push and pull up and down.

Optionally, the bending protection ring is further included, the body is a flexible body, the bending protection ring is arranged on the outer wall of the body, and the bending protection ring is solid with the body.

The body can be made of a single material (such as pebax PA PE PTFE …) or a composite material (such as woven mesh tube, coil tube …). The protection ring of specifically bending is located the handing-over department of body and pipe seat, and the body can play the guard action when bending like this. Particularly, when the body and the bending guard ring are made of the same material, the body and the bending guard ring can be integrally formed, and when the body and the bending guard ring are made of different medium materials, the body and the bending guard ring can be fixed together in a thermal shrinkage bonding mode.

Optionally, the blind hole has a plurality ofly, and is parallel to each other between the blind hole, and the hole bottom department of every blind hole all is provided with developing device, and every blind hole all communicates and has a side opening.

The design is convenient for simultaneously penetrating a plurality of guide wires.

Optionally, the side holes are not in one circumferential section.

The reason that the guide wires are not arranged on one circumferential section is to facilitate the simultaneous insertion of a plurality of guide wires and avoid the excessive interference of the guide wires.

Optionally, the blind holes have unequal hole depths.

Optionally, the developing device comprises a plastic block or a metal block.

The developing device may be a metal block, a plastic block, or a combination thereof.

The invention has the beneficial effects that: the guiding catheter ensures that the side hole can accurately reach the position near the branch blood vessel through the positioning function of the developing device, and meanwhile, the bending function of the blind hole and the side hole is that the guide wire is bent and folded into the branch blood vessel, so that the operation is convenient, and the guide wire can smoothly and quickly enter the branch blood vessel.

Description of the drawings:

FIG. 1 is a schematic structural view of example 1;

FIG. 2 is a schematic sectional view of the inside of embodiment 1;

FIG. 3 is a schematic structural view of example 2;

FIG. 4 is a schematic view of the guiding catheter in a first step of performing the fenestration procedure;

FIG. 5 is a schematic view of the guiding catheter in a second step of performing the fenestration procedure;

FIG. 6 is a schematic view of the guiding catheter at a third step in performing the fenestration procedure;

FIG. 7 is a schematic view of the guide duct in a first step of performing a chimney operation;

FIG. 8 is a schematic view of the guiding duct in a second step of performing a chimney operation;

fig. 9 is a schematic view of the guiding duct in a third step of performing a chimney operation.

The figures are numbered: 1. the body, 101, a catheter holder, 102, a blind hole, 103, a through hole, 104, a bending retainer, 105, a side hole, 106, a developing device, 107, a pore canal, 2, a covered stent, 3, a preset guide wire, 4, a branch blood vessel, 5 and a guide wire.

The specific implementation mode is as follows:

the present invention is described in detail below.

Example 1

As shown in fig. 1 and fig. 2, a guiding catheter comprises a main body 1 and a developing device 106, wherein the main body 1 is provided with a blind hole 102, the developing device 106 is disposed at the bottom of the blind hole 102, the main body 1 is provided with a side hole 105, the side hole 105 is located at the developing device 106, and the side hole 105 is communicated with the blind hole 102 and the outside of the main body 1.

The blind hole 102 is a linear blind hole 102, and the side hole 105 is perpendicular to the blind hole 102.

The body 1 is provided with a through hole 103, and the through hole 103 is parallel to the blind hole 102.

The device also comprises a conduit seat 101, wherein the conduit seat 101 is matched with the body 1 in an inserting way, and the conduit seat 101 is provided with a pore canal 107 communicated with the blind hole 102 and the through hole 103.

The body 1 is a circular tube-shaped body 1, and one end of the body 1 is in a circular truncated cone shape.

The bending protection ring is characterized by further comprising a bending protection ring 104, the body 1 is a flexible body 1, the bending protection ring 104 is arranged on the outer wall of the body 1, and the bending protection ring 104 is solid with the body 1.

The developing device 106 may be a plastic block or a metal block or a combination of both.

Example 2

As shown in fig. 3 and fig. 1, a guiding catheter comprises a main body 1 and a developing device 106, wherein the main body 1 is provided with a blind hole 102, the developing device 106 is disposed at the bottom of the blind hole 102, the main body 1 is provided with a side hole 105, the side hole 105 is located at the developing device 106, and the side hole 105 is communicated with the blind hole 102 and the outside of the main body 1.

The blind holes 102 are arranged in a plurality of parallel, the bottom of each blind hole 102 is provided with a developing device 106, and each blind hole 102 is communicated with a side hole 105.

The side holes 105 are not in one circumferential section. Blind holes 102 have unequal hole depths.

The method for using the guiding catheter provided by the embodiment 1 in the window making operation is further described by combining the attached fig. 4, 5 and 5.

Firstly, referring to the attached figure 4, a covered stent 2 is plugged into a main blood vessel, and a prefabricated guide wire 3 is plugged into the covered stent 2;

secondly, referring to fig. 5, a guiding catheter is inserted into the main blood vessel along the preset guide wire 3 and passes through the hole on the covered stent 2, and the side hole 105 on the guiding catheter faces to the branch blood vessel;

thirdly, referring to fig. 6, the guiding wire 5 is inserted into the blind hole 102 of the guiding catheter, and when the guiding wire contacts the developing device 106, the guiding wire 5 bends and moves into the branch vessel 4.

The use of the guide catheter shown in example 1 in a fenestration procedure is further described with reference to fig. 7, 8 and 9.

Firstly, as shown in figure 7, a covered stent is inserted into a main blood vessel, and a preset guide wire 3 is inserted between the main blood vessel and the covered stent 2;

secondly, as shown in fig. 8, the guiding catheter is sleeved on the preset guide wire 3, the preset guide wire 3 passes through the through hole 102 of the guiding catheter, the guiding catheter is plugged to the branch vessel, and the side hole 105 on the guiding catheter faces the branch vessel 4;

thirdly, as shown in fig. 9, the guiding wire 5 is plugged inwards along the blind hole 102 of the guiding catheter, and when the guiding wire 5 touches the developing device 106, the guiding wire 5 bends and enters the branch vessel.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, which is defined by the claims and their equivalents, and can be directly or indirectly applied to other related fields of technology.

Claims

1. The utility model provides a guide catheter, its characterized in that, includes body and developing device, be provided with the blind hole on the body, developing device sets up the hole bottom department at the blind hole, seted up the side opening on the body, the side opening is located developing device department, and the side opening intercommunication blind hole reaches outside this body.

2. The guide catheter of claim 1, wherein the blind hole is a linear blind hole and the side hole is perpendicular to the blind hole.

3. The guide catheter of claim 2, wherein the body defines a through hole that is parallel to the blind hole.

4. The guide catheter of claim 3, further comprising a catheter hub, wherein the catheter hub is coupled to the body, and wherein the catheter hub defines a channel communicating the blind hole and the through hole.

5. The guide catheter of claim 1, wherein the body is a tubular body having a frustoconical end.

6. The guide catheter of claim 1, further comprising a crimp retainer, the body being a flexible body, the crimp retainer being disposed on an outer wall of the body, the crimp retainer being solid with the body.

7. The guide catheter of claim 1, wherein the blind holes are arranged in a plurality of parallel positions, the bottom of each blind hole is provided with a developing device, and each blind hole is communicated with a side hole.

8. The guide catheter of claim 7, wherein the side hole is not in one circumferential cross-section.

9. The guide catheter of claim 8, wherein the blind holes have unequal hole depths.

10. The guide catheter of claim 1, wherein the visualization device comprises a plastic block or a metal block.