Tracheal stent pusher

Abstract

The utility model relates to a tracheal stent pusher which comprises a restraining assembly, a pushing assembly and a pushing assembly, the restraining assembly comprises a long-strip-shaped rope cage and a traction rope arranged at one end of the rope cage in a connected mode, and the rope cage is used for folding and restraining a tracheal stent; the two ends of the containing pipe are communicated, a deformable guide wire is arranged in the length direction of the containing pipe so that the containing pipe can be bent and shaped, and the rope cage is arranged in the containing pipe in a sliding mode; the pushing pipe is arranged in the placing pipe in a sliding manner and is used for ejecting the rope cage filled with the air pipe bracket out of the placing pipe; the two ends of the pushing pipe are communicated, a wire passing opening is formed in one side of the pushing pipe, and the traction rope penetrates in from the end of the pushing pipe and penetrates out from the wire passing opening. A through biopsy hole is formed in the fiberoptic bronchoscope, the free end of the fiberoptic bronchoscope can penetrate through the pushing pipe and the rope cage in a sliding mode, and the biopsy hole is used for inserting a cutting tool to damage connection of the end, away from the pushing pipe, of the rope cage. The utility model provides a tracheal stent pusher which is simple to operate and high in fault tolerance.

Description

TECHNICAL FIELD

[0001] The utility model relates to artificial trachea technical field, concretely is a tracheal stent pusher. BACKGROUND

[0002] The trachea is composed of cartilages, smooth muscles and connective tissues. The tracheal cartilages are mostly 14-16, connected with each other by ligaments, and the tracheal cartilages are in the shape of "C", with the gap facing the back, accounting for about 2 / 3 of the tracheal circumference. The tracheal cartilages are generally 14-16, and the ring ligaments are connected between each cartilage. The membrane wall formed by the smooth muscle fibers and the connective tissues seals the back gap of the tracheal cartilage. The tracheal wall is composed of the mucosa layer, the submucosa layer and the adventitia from inside to outside. The cilia oscillation on the tracheal wall, the elastic fibers contained in the intrinsic membrane, the lymph tissues and the plasma cells, and the immunoglobulin in the secretion of the submucosal tracheal glands all constitute important components of the body defense system.

[0003] Tracheobronchomalacia is a pathological phenomenon caused by the collapse of the tracheal lumen to varying degrees due to the lack of the required cartilage hardness and support of the trachea. Tracheobronchomalacia is divided into congenital (primary) and acquired (secondary). The acquired (secondary) tracheobronchomalacia is mostly caused by external compression. For example, thymus enlargement, enlarged lymph nodes, cysts or atrial and ventricular enlargement, pulmonary artery ligaments, vascular rings, trauma, tracheotomy, thyroid tumors, etc. Due to the long-term compression of the tracheal cartilage by the space-occupying lesion, the cartilage ring becomes thin and weak, and in the late stage, the cartilage ring can be absorbed and disappeared, showing a membrane structure. The pathological mechanism may be that the long-term compression of the tracheal cartilage ring causes local blood supply deficiency or ischemia, and the ischemic aseptic necrosis causes the local disappearance of the tracheal ring.

[0004] The treatment method can use a non-invasive ventilator, but it affects daily life, and can be surgically removed, but if the tracheomalacia is wide, it cannot be used as the preferred solution, and an artificial trachea can also be implanted, such as a metal stent or a silicone stent, but such stents are prone to displacement or tracheal rupture. The existing tracheal stent placement device has a complex structure, and the operation is cumbersome, the placement efficiency of the tracheal stent is low, and the existing tracheal stent placement device is not easy to realize secondary adjustment after being placed in the trachea, increasing the pain of the patient and the occurrence of stent complications. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is to provide a tracheal stent pusher which is simple to operate and has high fault tolerance.

[0006] To solve the above problems, the technical scheme adopted by the utility model is:

[0007] A tracheal stent pusher, comprising:

[0008] A restraining assembly includes a long strip-shaped rope cage and a traction rope connected to one end of the rope cage, the rope cage is used to collect the tracheal stent;

[0009] A placement tube, both ends of which are through, is provided with a deformable guide wire in the length direction, so that the placement tube can be bent and shaped, and the rope cage is slidably arranged in the placement tube;

[0010] A push tube is slidably arranged in the placement tube and is used to push the rope cage filled with the tracheal stent out of the placement tube; both ends of the push tube are through, and a wire port is formed on one side of the push tube; the traction rope is inserted from the end of the push tube and is pulled out from the wire port;

[0011] A fiber bronchoscope is provided with a through biopsy hole, and the free end of the fiber bronchoscope can be slidably arranged through the push tube and the rope cage; the biopsy hole is used to insert a cutting tool to damage the connection of the rope cage away from one end of the push tube.

[0012] As an embodiment of the utility model, the tracheal stent is in a long strip shape as a whole, which includes a plurality of C-shaped stent rings arranged and a plurality of stent connecting segments, and the ends of the two adjacent stent rings are connected by the stent connecting segments.

[0013] As an embodiment of the utility model, the cross section of the tracheal stent in the released state is in a C shape, and the cross section of the tracheal stent in the collected and restrained state of the rope cage is in a shuttle shape, and the fiber bronchoscope passes through the inside of the stent ring.

[0014] As an embodiment of the utility model, the shape and size of the tracheal stent as a whole are matched with the shape and size of the trachea or bronchus.

[0015] As an embodiment of the utility model, the rope cage includes a plurality of binding lines arranged in a circumferential direction, one end of the plurality of binding lines is connected to form a first node, and the middle segments of the plurality of binding lines are connected to form a second node, the rope cage is formed between the first node and the second node, and the adjacent two binding lines of the rope cage are connected by a connecting line.

[0016] As an embodiment of the utility model, the parts of the plurality of binding lines away from the rope cage are wound with each other to form the traction rope.

[0017] As an embodiment of the utility model, the guide wire is made of a metal material with easy deformation.

[0018] As an embodiment of the utility model, the tracheal stent is made of a titanium-nickel alloy material.

[0019] The beneficial effects generated by the above technical scheme are as follows:

[0020] The rope cage can be used to fold and compress the tracheal support, so as to slide the rope cage and the tracheal support into the placement tube, the placement tube is provided with a deformable guide wire, and the guide wire is convenient for shaping according to the shape and size of the airway of the patient to pass through the curved part of the airway, or enter the trachea or the bronchus. The push tube is provided with a wire passing port, so that the cross section of the push tube is in the shape of C, the traction rope is convenient to pass through, and then the medical staff holds the traction rope to cooperate with the push tube to put the rope cage into the trachea of the patient, and the rope cage is placed in place under the guidance of the fiber bronchoscope, the tracheal support is cut off after the position is adjusted, then the damaged rope cage is taken out by pulling the traction rope; if the placement fails, the undamaged rope cage can be pulled back into the tube by pulling the traction rope, then the position of the placement tube is adjusted and placed again, and the fault tolerance of the pusher as a whole is increased. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic view of the tracheal support of the embodiment.

[0022] Figure 2 is a structural schematic view of the tracheal support of the embodiment.

[0023] Figure 3 is a structural schematic view of the tracheal support of the embodiment.

[0024] Figure 4 is Figure 3 is a structural schematic view of the tracheal support of the embodiment.

[0025] Figure 5 is a structural schematic view of the tracheal support of the embodiment.

[0026] Wherein: 100 tracheal support; 101 support ring; 102 support connecting section;

[0027] 200 placement tube; 201 guide wire;

[0028] 300 push tube; 301 wire passing port;

[0029] 400 rope cage; 401 traction rope; 402 first node; 403 second node. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model is clearly and completely described below in combination with specific embodiments.

[0031] As Figures 1 to 5 shown in the tracheal support pusher, the tracheal support pusher comprises:

[0032] A restraining assembly, which comprises a long strip-shaped rope cage 400 and a traction rope 401 connected to one end of the rope cage 400, the rope cage 400 is used to fold the tracheal stent 100;

[0033] A placement tube 200, which is through at both ends and is provided with a deformable guide wire 201 in the length direction, so that the placement tube 200 can be bent and shaped, and the rope cage 400 is slidingly arranged in the placement tube 200;

[0034] A push tube 300, which is slidingly arranged in the placement tube 200 and is used to push the rope cage 400 filled with the tracheal stent 100 out of the placement tube 200, the wall thickness of the push tube 300 is greater than that of the placement tube 200 to increase the strength of the push tube 300 and facilitate the pushing of the rope cage 400, and the inner diameter of the push tube 300 is smaller than the diameter of the folded tracheal stent 100; the two ends of the push tube are through, and a wire port 301 is formed on one side of the push tube, the traction rope 401 is inserted into the end of the push tube 300 and then is pulled out from the wire port 301, see Figure 3 and Figure 4 , the traction rope 401 can be conveniently held and pulled by medical staff after being pulled out from the wire port 301;

[0035] A bronchoscope, which is provided with a through biopsy hole, the free end of the bronchoscope can slidingly pass through the push tube 300 and the rope cage 400, and the biopsy hole is used to insert a cutting tool (a YAG laser fiber is inserted to burn and cut the rope cage 400) to destroy the connection of the rope cage 400 away from one end of the push tube 300, and then the restraining assembly is taken out by pulling the traction rope 401.

[0036] Referring to Figure 1 and Figure 2 , the tracheal stent 100 is in a long strip shape as a whole, which comprises a plurality of C-shaped stent rings 101 arranged and a plurality of stent connecting segments 102, and the end portions of two adjacent stent rings 101 are connected by a stent connecting segment 102. Specifically, referring to Figure 1 and Figure 3 , the end portion of one side of the stent ring 101 and the end portion of one side of the next stent ring 101 are connected by the stent connecting segment 102. The C-shaped stent ring 101 is placed between the tracheal cartilage rings and clamped therein to prevent dislocation.

[0037] The cross section of the tracheal stent 100 in the released state is in a C shape, and the cross section of the tracheal stent 100 in the folded and restrained state of the rope cage 400 is in a shuttle shape, and the bronchoscope passes through the inside of the stent ring 101.

[0038] The shape and size of the tracheal stent 100 as a whole are adapted to the shape and size of the trachea or bronchus. Referring to Figure 1The inner diameter of the proximal end support of the tracheal stent 100 is thin, and the C-shaped inner diameter of the proximal end of the tracheal carina is large, so as to better fit the tracheal wall, and preferably, the stent ring 101 is closer to a complete circular structure, at this time, the stent ring 101 of the first three sections of the tracheal stent 100 is large in diameter and is tightly connected, so that the first three sections can be clamped at the bronchial bifurcation, reducing the possibility of stent falling, and is suitable for placement of the stent in the bronchus.

[0039] Referring to Figure 5 The rope cage 400 comprises a plurality of binding lines arranged in a circle, one end of the plurality of binding lines is connected to form a first node 402, and the middle section of the plurality of binding lines is connected to form a second node 403, the first node 402 and the second node 403 form the rope cage 400, and the adjacent two binding lines of the rope cage 400 are connected by a connecting line. The parts of the plurality of binding lines away from the rope cage 400 are wound with each other to form the traction rope 401.

[0040] In the embodiment, the guide wire 201 is made of a metal material easy to deform, and preferably made of copper or aluminum alloy.

[0041] The tracheal stent 100 is made of titanium-nickel alloy material, and the use of memory metal material can make the tracheal stent 100 better fit the airway after recovery.

[0042] Although the utility model has been described in detail with reference to the foregoing embodiments, the skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A tracheal stent pusher characterized by, It comprises: a constraint assembly comprising a long rope cage (400) for constraining a tracheal stent (100) and a traction rope (401) connected to one end of the rope cage (400); a placement tube (200) with two ends penetrating each other and a deformable guide wire (201) arranged in the length direction of the placement tube (200) to make the placement tube (200) bendable and shapeable, and the rope cage (400) is slidingly arranged in the placement tube (200); a push tube (300) slidingly arranged in the placement tube (200) for pushing the rope cage (400) filled with the tracheal stent (100) out of the placement tube (200), the two ends of the push tube penetrating each other, and a wire port (301) is formed on one side of the push tube (300), the traction rope (401) is arranged to pass through the end of the push tube (300) and out of the wire port (301); a fiber bronchoscope provided with a penetrating biopsy hole, the free end of the fiber bronchoscope can slide through the push tube (300) and the rope cage (400), and the biopsy hole is used for inserting a cutting tool to damage the connection of the rope cage (400) away from one end of the push tube (300).

2. The tracheal stent pusher of claim 1, wherein, The tracheal stent (100) is long in shape as a whole, comprising a plurality of C-shaped stent rings (101) arranged and a plurality of stent connecting segments (102), and the ends of two adjacent stent rings (101) are connected by a stent connecting segment (102).

3. The tracheal stent pusher of claim 2, wherein, The cross section of the tracheal stent (100) in the released state is C-shaped, and the cross section of the tracheal stent (100) in the constraining state of the rope cage (400) is shuttle-shaped, and the fiber bronchoscope passes through the inside of the stent ring (101).

4. The tracheal stent pusher of claim 2, wherein, The shape and size of the tracheal stent (100) as a whole are matched with the shape and size of the trachea or bronchus.

5. The tracheal stent pusher of claim 1, wherein, The rope cage (400) comprises a plurality of binding wires arranged in a circular manner, one end of each of the binding wires is connected to form a first node (402), and the middle segments of the binding wires are connected to form a second node (403), the rope cage (400) is formed between the first node (402) and the second node (403), and the adjacent two binding wires of the rope cage (400) are connected by a connecting wire.

6. The tracheal stent pusher of claim 5, wherein, The parts of the binding wires away from the rope cage (400) are wound with each other to form the traction rope (401).

7. The tracheal stent pusher of claim 1, wherein, The guide wire (201) is made of a metal material with easy deformation.

8. The tracheal stent pusher of claim 1, wherein, The tracheal stent (100) is made of titanium-nickel alloy material.

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