CN215306328U - Bronchus plugging device system with foam-shaped matrix memory alloy frame structure - Google Patents

Abstract

The utility model discloses a bronchial occluder system with a foam matrix memory alloy frame structure, which belongs to the technical field of medical instruments and comprises a positioning guide wire, an occluder, a recovery sheath, a push rod, a preset recovery wire and a capture device, wherein the occluder is composed of a foam matrix and a memory alloy frame, the capture device is connected with the occluder through the push rod, the occluder is provided with the recovery sheath, the preset recovery wire is arranged in the recovery sheath, and the designed structure can be attached to an occluded bronchus.

Description

Bronchus plugging device system with foam-shaped matrix memory alloy frame structure

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a bronchial occluder system with a foam-shaped matrix memory alloy frame structure.

Background

Clinically applicable indications of the bronchial occluder include emphysema, bullous lung, bronchopleural fistula, intractable hemoptysis, cavitary pulmonary tuberculosis and the like. However, the bronchus occluders used clinically at present are congenital atrial defect occluders, ventricular defect occluders, patent ductus arteriosus or patent foramen ovale occluders, and as the occluders are specially designed for congenital heart diseases and are not designed according to the shape, structure or function of the bronchus occluder, the bronchus occluder is not easy to completely occlude, is easy to fall off and is easy to cause secondary infection.

Due to factors such as air pollution and aging population, and the improvement of the detection rate of small nodules in the lung, the number of patients with lung diseases such as lung cancer is increased year by year, and the number of patients with lung surgery is also increased year by year. After lung lobe or segment resection, about 1% to 2% of patients develop bronchopleural fistula. If the bronchus pleura fistula cannot be effectively treated in time, the bronchus pleura fistula can not be healed for a long time after secondary infection, and the affected side pleural cavity infection or the opposite side healthy lung infection can be caused. Bronchial occlusion plus pleural cavity irrigation and drainage are the most active and effective treatment for such patients. Emphysema or bullous lung is a common lung disease, internal treatment cannot be radical, and surgical treatment means includes thoracotomy or lung volume reduction under thoracoscope or bullous lung resection operation, but has a plurality of complications. The bronchus occluder provides a minimally invasive and effective treatment means for occluding the pulmonary segmental bronchus of the affected side.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

The utility model aims to solve the problems that the existing bronchus stopper cannot be attached to a blocked bronchus and cannot be recycled or loaded with medicine.

2. Technical scheme

In order to achieve the purpose, the technical scheme provided by the utility model is as follows:

the utility model discloses a bronchial occluder system with a foam matrix memory alloy frame structure, which comprises a positioning guide wire, an occluder, a recovery sheath, a push rod, a preset recovery wire and a catcher, wherein the occluder consists of a foam matrix and a memory alloy frame, the occluder and the push rod can be connected through threads on the memory alloy frame of the occluder during conveying, and the catcher can be used for catching and buckling a recovery hook on the memory alloy for recovery or can be used for recovery through the recovery wire during recovery.

Preferably, the foam substrate is attached to the surface of the memory alloy frame, and the foam substrate is made of a shape memory polymer.

Preferably, the surface of the foam substrate is coated or impregnated with one or more drugs.

Preferably, the occluder is in the shape of an occluder, a vascular plug, a filter or a spring ring.

Preferably, the outermost layer of the foam substrate is covered with a membrane that seals the drug inside, the membrane covering the exposed portion of the memory alloy frame inside the foam substrate.

Preferably, the memory alloy frame and the foam substrate are fixed by sewing, bonding or embedding.

Preferably, a plurality of developing marks are arranged on the memory alloy frame, and the developing marks are developed under X-rays.

Preferably, the surface of the positioning guide wire is coated with a hydrophilic layer.

Preferably, the memory alloy frame is in threaded connection with the push rod.

Preferably, the memory alloy frame is provided with a small hole, and the preset recovery line penetrates through the small hole to be connected with the memory alloy frame.

Preferably, the foam substrate is polyurethane, and the foam substrate can be cut into different shapes.

Preferably, the memory alloy frame is a net-like structure.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

the utility model discloses a bronchial occluder system with a foam matrix memory alloy frame structure, which comprises a positioning guide wire, an occluder, a recovery sheath, a push rod, a preset recovery wire and a catcher, wherein the occluder consists of a foam matrix and a memory alloy frame, the catcher is connected with the occluder through the push rod, the recovery sheath is arranged on the occluder, the preset recovery wire is arranged in the recovery sheath, and the designed structure can be attached to an occluded bronchus.

Drawings

FIG. 1 is a schematic structural view of an occluder of a bronchial occluder system of a foam-like matrix memory alloy frame structure according to the present invention;

FIG. 2 is a cross-sectional view of an occluder of a foam-like matrix memory alloy frame structure bronchial occluder system of the present invention;

FIG. 3 is a schematic structural view of the whole of a bronchial occluder system of a foam-like matrix memory alloy frame structure according to the present invention;

FIG. 4 is a schematic diagram of a pre-installed recovery wire of a bronchial occluder system with a foam-like matrix memory alloy frame structure according to the present invention;

FIG. 5 is a schematic structural view of a plug-shaped vascular occluding device of the present invention;

FIG. 6 is a schematic structural view of the filter of this embodiment 1;

fig. 7 is another schematic structural diagram of the occluder of this embodiment 3;

fig. 8 is another schematic structural diagram of the occluder of this embodiment 3.

The reference numerals in the schematic drawings illustrate:

100. positioning a guide wire;

200. an occluder; 210. a foam matrix; 220. a memory alloy frame; 221. a small hole;

300. recovering the sheath;

400. a push rod;

500. presetting a recovery line; 510. a node;

600. a catcher;

700. and (3) a filter.

Detailed Description

In order to facilitate an understanding of the utility model, the utility model will now be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the utility model are shown, but which may be embodied in many different forms and are not limited to the embodiments described herein, but rather are provided for the purpose of providing a more thorough disclosure of the utility model.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present; the terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model; as used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Example 1

Referring to fig. 1-4 and 6, the bronchial occluder system with a foam matrix memory alloy frame structure in the present embodiment includes a positioning guide wire 100, an occluder 200, a recovery sheath 300, a push rod 400, a preset recovery wire 500 and a capture device 600, the occluder 200 is composed of a foam matrix 210 and a memory alloy frame 220, the capture device 600 is connected with the occluder 200 through the push rod 400, the occluder 200 is provided with the recovery sheath 300, and the preset recovery wire 500 is arranged in the recovery sheath 300, and the designed structure can be attached to the occluded bronchi.

The foam substrate 210 of this embodiment is attached to the surface of the memory alloy frame 220, and the foam substrate 210 is made of shape memory polymer, and the designed structure, the foam substrate shape memory polymer, can recover the memory shape under a certain temperature.

The surface of the foam substrate 210 of this embodiment is coated with one or more drugs.

The outermost layer of the foam substrate 210 of this embodiment is covered with a membrane that seals the drug inside, covering the exposed portion of the memory alloy frame 220 inside the foam substrate 210.

The memory alloy frame 220 and the foam substrate 210 of the present embodiment are fixed by sewing, bonding or fitting. The memory alloy frame 220 structure can be fixed in the foam matrix body by medical glue, and the sealing membrane, the foam matrix and the memory alloy frame 220 structure can be fixed together by medical suture.

The memory alloy frame 220 of the embodiment is provided with a plurality of developing marks, and the developing marks are developed under X-rays.

The positioning wire 100 of this embodiment is coated with a hydrophilic layer on the surface, and the positioning wire 100 is generally selected to have an outer diameter of 0.035 inches and a length of 1800 mm.

The memory alloy frame 220 and the push rod 400 are in threaded connection, the 5F-16F conveying sheath/recovery sheath 300 can be selected according to the different diameters of the conveyed plugging device 200, the length is 400-1000 mm, the head end of the catheter can be straight, the bending angle can be 15-45 degrees, the push rod 400 or the push steel cable can be selected for a push device, a push steel cable is generally selected, the head end of the push steel cable is provided with a thread matched with a connecting/recovery component of the memory alloy frame 220 structure, and the push steel cable can rotate for two and a half circles.

The memory alloy frame 220 of the embodiment is provided with a small hole 221, the preset recycling line 500 passes through the small hole 221 and is connected with the memory alloy frame 220, the preset recycling line 500 can be made of nylon wire, carbon wire or PE (braided wire), the diameter is about 0.2 mm-1 mm, and the length is about 80 mm-2000 mm.

The preset recycling line 500 of the embodiment is a bifilar structure, the preset recycling line (the middle part of 00 is provided with a node 510, the diameter of the node 510 is larger than that of the small hole 221 on the memory alloy frame 220, the node (510) is positioned on one side of the small hole 221 on the memory alloy frame 220, and by the designed structure, whether the memory alloy frame 220 is pulled back or not can be further selected by selecting to pull different strands of the preset recycling line 500.

The foam substrate 210 of this embodiment is polyurethane, the foam substrate 210 can be cut into different shapes, the foam substrate can be cut into different shapes to fit the blocked bronchus, and can be made into shapes such as cylinder, strawberry, dumbbell, mushroom, etc.; the foam-like matrix can maintain a better compressed state during the delivery of the occluding device 200, and can be restored to the original state after the occluding device 200 is released

The memory alloy frame 220 of the present embodiment is a net-like structure.

Before operation, two recovery wires are threaded from the far end to the near end of the delivery sheath, and then the bronchus stopper 200 is integrally collected into the lumen at the far end of the delivery sheath.

During operation, under the perspective of an X-ray machine, a target bronchus to be blocked is determined through a fiber bronchoscope, and after body surface positioning is carried out, a guide wire is guided into a target bronchus cavity to be blocked through a biopsy working channel of the fiber bronchoscope; then, under the direct viewing of a bronchofiberscope or the X-ray perspective positioning, the plugging device 200 is conveyed into a target bronchus along the guide wire, and then the guide wire is withdrawn; slowly delivering the sheath tube loaded with the plugging device 200 into a target bronchus to be plugged; then, the plugging device 200 is pushed out of the delivery sheath by the pushing rod 400/steel wire/steel cable, after the plugging device 200 is completely expanded and fixed, the pushing rod 400/steel wire/steel cable and the delivery sheath are withdrawn, and the plugging device 200 is remained in the target bronchial cavity, so that the whole bronchial plugging process is completed.

If the plugging effect is not ideal after the occluder 200 is pushed out of the delivery sheath, the recovery wire can be pulled back to retract the entire bronchial occluder 200 into the lumen at the distal end of the delivery sheath again. After the position of the delivery sheath is adjusted, the occluder 200 is released again.

The positioning guide wire 100 can be also connected with a filter 700, after the filter 700 is sent to a target bronchus along the guide wire, the guide wire is withdrawn, and a sheath tube loaded with the filter 700 is slowly sent to the target bronchus to be blocked; the filter 700 is then pushed out of the delivery sheath by the push rod 400/wire/cable, and after the filter 700 is fully expanded and secured, the push rod 400/wire/cable and delivery sheath are withdrawn.

Example 2

Referring to fig. 2 to 6, the basic mechanism of the present embodiment is the same as that of embodiment 1, except that the occluder structure of the present embodiment is a vascular plug-shaped occluder.

Example 3

Referring to fig. 2-5, 6 and 7, the basic mechanism of the present embodiment is the same as that of embodiment 1, except that the stopper structure of the present embodiment is in the shape of a cylindrical spring ring.

Example 4

Referring to fig. 2-5, 6 and 8, the basic mechanism of the present embodiment is the same as that of embodiment 1, except that the occluder structure of the present embodiment is in the shape of a pagoda spring ring.

The above-mentioned embodiments only express a certain implementation mode of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention; it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which are within the protection scope of the present invention; therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (12)

1. A foam-like matrix memory alloy frame structure bronchial occluder system which characterized in that: the device comprises a positioning guide wire (100), a plugging device (200), a recovery sheath (300), a push rod (400), a preset recovery wire (500) and a catching device (600), wherein the plugging device (200) is composed of a foam matrix (210) and a memory alloy frame (220), the catching device (600) is connected with the plugging device (200) through the push rod (400), the recovery sheath (300) is arranged on the plugging device (200), and the preset recovery wire (500) is arranged in the recovery sheath (300).

2. The foam-like matrix memory alloy frame structure bronchial occluder system of claim 1, wherein: the foam matrix (210) is embedded on the outer layer of the memory alloy frame (220), and the foam matrix (210) is made of shape memory polymer.

3. The foam-like matrix memory alloy frame structure bronchial occluder system of claim 1, wherein: the foam matrix (210) is impregnated with a drug.

4. The foam-like matrix memory alloy frame structure bronchial occluder system of claim 1, wherein: the occluder (200) is in the shape of an occluder, a vascular plug, a filter or a spring ring.

5. A foam-like matrix memory alloy frame structure bronchial occluder system of claim 3, wherein: the outermost layer of the foam substrate (210) is covered with a membrane that seals the drug inside, and the membrane covers the exposed portion of the memory alloy frame (220) inside the foam substrate (210).

6. The foam-like matrix memory alloy frame structure bronchial occluder system of claim 1, wherein: the memory alloy frame (220) and the foam substrate (210) are fixed through sewing, bonding or embedding.

7. The foam-like matrix memory alloy frame structure bronchial occluder system of claim 1, wherein: the memory alloy frame (220) is provided with a plurality of developing marks, and the developing marks are developed under X-rays.

8. The foam-like matrix memory alloy frame structure bronchial occluder system of claim 1, wherein: the surface of the positioning guide wire (100) is coated with a hydrophilic layer.

9. The foam-like matrix memory alloy frame structure bronchial occluder system of claim 1, wherein: the memory alloy frame (220) is in threaded connection with the push rod (400).

10. The foam-like matrix memory alloy frame structure bronchial occluder system of claim 1, wherein: the memory alloy frame (220) is provided with a small hole (221), and the preset recovery wire (500) penetrates through the small hole (221) to be connected with the memory alloy frame (220).

11. The foam-like matrix memory alloy frame structure bronchial occluder system of claim 1, wherein: the foam substrate (210) is of the polyurethane type.

12. The foam-like matrix memory alloy frame structure bronchial occluder system of claim 1, wherein: the memory alloy frame (220) is of a net-like structure.

Images