An implant device

Abstract

The utility model provides a kind of implant device, it is related to medical instrument technical field, including support pusher, trachea bronchial stent and release line;Wherein, the support pusher can be bent and / or visualized;The support pusher includes sequentially connected handle, bendable guide pipe and lens mechanism;The trachea bronchial stent is set on the support pusher and is close to one end of the lens mechanism;One end of the release line is located at the handle, and the other end of the release line is wound on the trachea bronchial stent, so that the trachea bronchial stent is in folded state, so as to improve the accuracy of tracheal stent implantation;When applying tension to one end of the release line, the other end of the release line releases the winding connection to the trachea bronchial stent, so that the trachea bronchial stent is in unfolded state.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an implantable device. Background Technology

[0002] The lungs are the main site of gas exchange, while the bronchi are the main channels for gas to enter and exit the lung tissue. The two work together to complete the respiratory movement.

[0003] The trachea is divided into the main trachea and the left and right bronchi, which further subdivide into bronchial segments and smaller bronchi, gradually narrowing until they reach the alveoli. During inhalation, air enters the trachea from the outside, then the bronchi and smaller bronchi, eventually reaching the alveoli where the exchange of oxygen and carbon dioxide takes place. Carbon dioxide is then exhaled through the smaller bronchi into the bronchi, then back into the trachea, and finally expelled from the body.

[0004] During this process, any lesion in either the bronchi or lung tissue can affect respiratory movement. For example, lesions such as inflammatory granulomas, scars, tuberculosis, trauma, tracheomalacia, amyloidosis, and tumors can lead to stenosis of the trachea and bronchi, causing symptoms such as difficulty breathing.

[0005] To address airway narrowing or obstruction, the conventional approach is to implant a tracheobronchial stent. However, current tracheobronchial stent implantation techniques require a high level of skill from the operator and are prone to issues such as inaccurate stent placement.

[0006] Therefore, an implantable device is needed. Utility Model Content

[0007] The purpose of this invention is to overcome the defects of the prior art and provide an implantation device that can be used in clinical practice to assist in the implantation of tracheobronchial stents.

[0008] The objective of this utility model can be achieved through the following technical solutions:

[0009] According to one objective of this utility model, this utility model provides an implantation device, comprising:

[0010] Stent pusher, tracheobronchial stent and release line;

[0011] The support pusher is flexible and / or visible; the support pusher includes a handle, a flexible guide tube, and a lens mechanism connected in sequence.

[0012] The tracheobronchial stent is fitted onto the stent pusher at one end near the lens mechanism.

[0013] One end of the release line is located at the handle, and the other end of the release line is wrapped around the tracheobronchial support.

[0014] In a preferred embodiment, the release line is located outside the support pusher.

[0015] In a preferred embodiment, the handle has a first channel; the first channel is connected to the guide pipe;

[0016] The guide pipe has a side hole; the side hole does not coincide with the tracheobronchial support.

[0017] The release line passes sequentially through the first channel, the interior of the guide pipe, and the side hole.

[0018] In a preferred embodiment, the handle is provided with an operation port and a connection port, and the operation port and the connection port form the first channel;

[0019] The operating port is located on the side wall of the handle; the connection port is located at the same end of the lens mechanism near the handle; the connection port is connected to the guide pipe.

[0020] In a preferred embodiment, one end of the release line is connected to a pulling mechanism for assisting in pulling out the release line; a protective mechanism is provided on the side wall of the handle to prevent the pulling mechanism from being accidentally pulled.

[0021] The pulling mechanism and the protective mechanism are detachably connected.

[0022] In a preferred embodiment, the pulling mechanism is a pull buckle.

[0023] In a preferred embodiment, the protection mechanism includes: a plurality of limiting components;

[0024] Several of the limiting components are arranged in a circumferential direction, and the pulling mechanism is engaged between all the limiting components.

[0025] In a preferred embodiment, there are two limiting components; the two limiting components are arranged opposite to each other.

[0026] In a preferred embodiment, the lens mechanism includes a guide wire and a lens assembly;

[0027] One end of the wire is electrically connected to the power source via the handle; the other end of the wire is electrically connected to the lens assembly; the lens assembly is fixed at the distal end of the guide tube.

[0028] In a preferred embodiment, the tracheobronchial stent is a deformable tracheobronchial stent.

[0029] When the release line is connected to the tracheobronchial stent, the tracheobronchial stent is in a folded state.

[0030] After the release line is disconnected from the tracheobronchial stent, the tracheobronchial stent automatically returns to its deployed state.

[0031] Compared with existing technologies, this technical solution has the following advantages:

[0032] 1. The tracheobronchial stent is attached to a visually flexible stent pusher to facilitate accurate placement of the tracheobronchial stent.

[0033] 2. The pull mechanism is a pull buckle, which makes it easy to pull and release the line.

[0034] 3. A protective mechanism is provided on the handle to prevent accidental release of the tracheobronchial stent due to accidental contact with the release line.

[0035] 4. By using flexible guide pipes, the difficulty of operation is reduced.

[0036] 5. Use deformable tracheobronchial stents to save space for implantation devices. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 A three-dimensional structural diagram of an implantation device provided in the embodiments of this specification. Figure 1 .

[0039] Figure 2 A three-dimensional structural diagram of an implantation device provided in the embodiments of this specification. Figure 2 .

[0040] Figure 3 A three-dimensional structural diagram of an implantation device provided in the embodiments of this specification. Figure 3 .

[0041] Figure 4 A three-dimensional structural diagram of an implantation device provided in the embodiments of this specification. Figure 4 .

[0042] Figure 5 This is a schematic diagram illustrating a binding method for an implantable device provided in an embodiment of this specification.

[0043] Figure 6 This is a schematic diagram of the handle of an implantation device provided in an embodiment of this specification.

[0044] Figure 7 A schematic diagram of the pulling mechanism and protective mechanism of an implantation device provided in the embodiments of this specification. Figure 1 .

[0045] Figure 8 A schematic diagram of the pulling mechanism and protective mechanism of an implantation device provided in the embodiments of this specification. Figure 2 .

[0046] Figure 9 A three-dimensional structural diagram of an implantation device provided in the embodiments of this specification. Figure 5 .

[0047] In the diagram: 100 Stent pusher; 200 Tracheobronchial stent; 300 Release line; 400 Pulling mechanism; 1 Handle; 11 Operating port; 12 Connecting port; 13 First channel; 14 Protection mechanism; 141 Limiting component; 2 Guide tube; 21 Limiting section; 22 Operating section; 23 Side hole; 3 Lens mechanism. Detailed Implementation

[0048] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0049] Inflammatory granulomas, scars, tuberculosis, trauma, tracheomalacia, amyloidosis, tumors and other lesions can lead to stenosis of the trachea and bronchi, which in turn can cause obstructive pneumonia, atelectasis and dyspnea. This can cause patients to experience difficulty breathing, wheezing, coughing and other symptoms. In severe cases, respiratory failure can occur and endanger life.

[0050] To improve clinical symptoms, tracheobronchial stents are often used in clinical practice to quickly relieve breathing difficulties and treat airway stenosis.

[0051] A tracheobronchial stent is a prosthesis used to address lateral compression stenosis or narrowing of the central airway, improve ventilation, and reconstruct the airway. Tracheobronchial stent implantation is minimally invasive and highly safe; moreover, it can rapidly relieve airway obstruction, improve clinical symptoms, and has significant effects.

[0052] Currently, the main methods for tracheobronchial stent placement used in clinical practice include:

[0053] (1) A tracheobronchial stent was placed under X-ray fluoroscopy guidance.

[0054] (2) Place a tracheobronchial stent under direct vision using a rigid bronchoscope.

[0055] However, positioning under fluoroscopy requires high-end hardware; implanting a tracheobronchial stent under direct vision has limitations on the material of the bronchoscope, requiring the use of a rigid bronchoscope; and the implantation method requires a high level of operator skill, which can easily lead to inaccurate stent positioning.

[0056] Based on this, this specification provides an implantation device, such as... Figure 1 As shown, it includes:

[0057] Stent pusher 100, tracheobronchial stent 200, and release line 300;

[0058] The support pusher 100 is flexible and / or visible; the support pusher 100 includes a handle 1, a flexible guide tube 2 and a lens mechanism 3 connected in sequence.

[0059] The tracheobronchial stent 200 is sleeved on the stent pusher 100 at one end near the lens mechanism 3;

[0060] One end of the release line 300 is located at the handle, and the other end of the release line (300) is wrapped around the tracheobronchial stent 200. Specifically, as shown... Figure 2 As shown:

[0061] The support pusher 100 includes a handle 1, a guide tube 2, and a lens mechanism 3; the handle 1, guide tube 2, and lens mechanism 3 are arranged sequentially from the proximal end to the distal end of the support pusher 100. The inner end of the handle 1 is the proximal end of the support pusher 100, and the outer end of the handle 1 is connected to the inner end of the guide tube 2; the outer end of the guide tube 2 is connected to the lens mechanism 3, which is located at the distal end of the support pusher 100.

[0062] The inner end of the handle 1 includes a first electrical connection part; the first electrical connection part is electrically connected to the power supply through the display screen, or the first electrical connection part is electrically connected to the power supply; the outer end of the handle 1 includes a second electrical connection part; there is an electrical connection channel between the first electrical connection part and the second electrical connection part.

[0063] Since this invention eliminates the need for direct visualization during tracheobronchial stent implantation, it avoids the mandatory requirement of using a rigid bronchoscope for stent implantation, thus reducing the material requirements for the tracheobronchoscope body 100. To facilitate the insertion of the guide tube 2 into the patient's bronchus, the guide tube 2 is flexible. The guide tube 2 is hollow.

[0064] The inner end of the guide pipe 2 is sealed and fixedly connected to the outer end of the handle 1; specifically, the second electrical connection part of the handle 1 is located in the inner end of the guide pipe 2.

[0065] Lens mechanism 3 includes: wires and lens assembly. Lens assembly includes: illumination component and image acquisition sensor.

[0066] To facilitate the operation of the lens mechanism 3 for illumination and real-time acquisition of images inside the respiratory tract, the lens mechanism 3 is electrically connected to a power source via a handle 1; one end of the wire is electrically connected to the power source via the handle 1, that is, the second electrical connection part at the outer end of the handle 1 is connected to one end of the wire of the lens mechanism 3; the other end of the wire is electrically connected to the lens assembly.

[0067] The lens assembly is flush with the outer end of the guide pipe 2 to prevent the image information acquired by the lens mechanism 3 from being obstructed by the guide pipe 2. To improve the stability of the acquired image, the lens assembly is fixed to the outer end of the guide pipe 2.

[0068] Based on this, the stent pusher 100 is inserted into the patient's airway through the nasal cavity or oral cavity and artificial airway. After passing through the glottis and entering the trachea, bronchi and more distal bronchi, the inside of the airway can be illuminated and observed through the lens mechanism 3. The observed images are transmitted to the display screen through the cable in the electrical connection part. The operator can observe the condition of the trachea and bronchi more accurately and intuitively by observing the images on the display screen, understand the nature of the lesion, and accurately deliver and release the tracheobronchial stent 200 to the lesion site.

[0069] The support pusher 100 is provided with a release line 300, the length direction of which is consistent with the length direction of the support pusher 100. The release line 300 includes a pull section, a transition section and a winding section in sequence.

[0070] During the delivery of the tracheobronchial stent 200, the tracheobronchial stent 200 is positioned in a folded state at the distal end of the stent pusher 100. The pull section of the release line 300 is close to the proximal end of the stent pusher 100, and the winding section of the release line 300 is wrapped around the outer surface of the tracheobronchial stent 200. When a pulling force is applied to the pull section of the release line 300 at the proximal end of the stent pusher 100, the winding section is gradually moved towards the proximal end of the stent pusher 100 through the transition section to unwind the release line 300 from the tracheobronchial stent 200, so that the tracheobronchial stent 200 changes from a folded state to an unfolded state.

[0071] The transition section of the release line 300 is located outside and / or inside the support pusher 100.

[0072] In one embodiment of this specification, such as Figure 2 As shown, the transition section of the release line 300 is located outside the stent pusher 100. That is, the transition section of the release line 300 is parallel to the guide pipe 2. At this time, the release lines 300 are all located outside the stent pusher 100.

[0073] During the movement of the support pusher 100, the release line may become tangled due to friction or movement. Therefore, in order to avoid the release line from getting tangled, at least one constraint is provided on the outer surface of the guide pipe 2; the release line passes through all the constraints in sequence.

[0074] The constraint members are arranged sequentially along the length of the guide pipe 2. The arrangement direction of the constraint members is parallel to the guide pipe 2, or, as shown below... Figure 3 As shown, the arrangement direction of the constraint components is the spiral forward direction of the guide pipe 2; the spiral winding angle and number of turns can be designed as needed, which reduces the release resistance and prevents the release line 300 from accidentally coming loose during the pushing process.

[0075] The constraint can be a closed hollow structure or an open hollow structure. To ensure smooth sliding of the release line, a lubricating coating can also be applied to the inner wall of the constraint.

[0076] Of course, in order to reduce the damage and irritation of the human body to the restraints, a recessed receiving groove can be set on the guide pipe 2 based on the arrangement direction of the restraints to reduce the height of the restraints protruding from the guide pipe 2.

[0077] In another embodiment of this specification, such as Figure 4 As shown, the transition section of the release line 300 is located inside the stent pusher 100. This arrangement further prevents the release line 300 from getting tangled during the process of the stent pusher 100 entering the patient's body, and also prevents the release line 300 from being accidentally touched, which could lead to the tracheobronchial stent being disconnected.

[0078] Specifically, the handle 1 has a first channel 13, which is connected to the guide pipe 2;

[0079] The handle 1 has an operation port 11 and a connection port 12. The operation port 11 and the connection port 12 are connected, and a first channel 13 is formed between them. The operation port 11 is located on the side wall of the handle 1. The connection port and the lens mechanism are both located near the same end of the handle (the outer end of the handle). The connection port 12 is located at the outer end of the handle 1. The connection port 12 and the lens mechanism 3 are located at the same end of the handle 1. The connection port 12 is connected to the guide pipe 2. The operation port 11 and the connection port 12 avoid the electrical connection part, and the first channel 13 does not contact the electrical connection channel, thereby avoiding affecting the illumination and image acquisition of the lens mechanism 3.

[0080] At this time, the connection port 12 of the handle 1 is located in the inner end of the guide pipe 2 to achieve the connection between the connection port 12 and the guide pipe 2.

[0081] To facilitate control of the implantation device's orientation, a direction operation button is provided on the handle. This button controls the orientation of the lens mechanism 3. Specifically, when the operator inserts the flexible guide tube into the patient's body, they can view the images captured by the lens mechanism 3 in real time on the display screen. The operator uses the direction operation button to control the movement and rotation of the lens mechanism 3. Since the lens mechanism 3 is fixedly connected to the flexible guide tube 2, the movement and rotation of the lens mechanism 3 causes the guide tube to move and rotate along with it. This allows the operator to control the movement and rotation of the lens mechanism within the guide tube using the direction operation button for better observation.

[0082] The guide pipe 2 sequentially includes a limiting section 21 and an operating section 22. The limiting section 21 and the operating section 22 are arranged from the inner end to the outer end of the guide pipe 2. In one embodiment of this specification, the lens mechanism 3 is electrically connected to a power source via a handle 1; the inner end of the lens mechanism 3 is fixed to the operating section 22. In another embodiment of this specification, the lens mechanism 3 is electrically connected to a power source via a handle 1; the outer end of the lens mechanism 3 is fixed to the operating section 22, so that the entire lens mechanism 3 is located inside the guide pipe 2.

[0083] The guide pipe 2 contains the wires of the release line 300 and the lens mechanism 3.

[0084] To facilitate the binding of the release line 300 to the tracheobronchial stent 200, a side hole 23 may be provided on the guide tube 2; the side hole 23 is located between the handle 1 and the tracheobronchial stent 200. Specifically, a side hole 23 is provided on the limiting section 21; to avoid excessive release line 300 extending outside the guide tube 2, the side hole 23 is located close to the tracheobronchial stent 200, that is, the side hole 23 is located on the side of the limiting section 21 near the operating section 22. The shape of the side hole 23 includes, but is not limited to, a circle.

[0085] At this time, the release line passes through the first channel 13, the interior of the guide pipe 2, and the side hole 23 in sequence.

[0086] In one embodiment of this specification, the stent pusher 100 is a disposable stent pusher 100.

[0087] With the continuous development of materials science and the widespread use of flexible bronchoscopes in clinical practice, the implantation of tracheobronchial stents 200 has been widely applied in clinical practice. During the implantation of tracheobronchial stents 200, a release device can also be implanted through the working channel of a flexible bronchoscope. However, this type of stent has the following main problems: (1) it is subjected to extreme compression and stretching due to the extremely small space requirements of the working channel; (2) the positioning is inaccurate and the state after the stent is deployed cannot be predicted; (3) the diameter of the braided metal wire of the tracheobronchial stent becomes thinner and the support is insufficient, making it easy to break.

[0088] Therefore, to avoid damage to the stent, this invention pre-installs the tracheobronchial stent 200 at the distal end of the disposable stent pusher 100, combined with the lens mechanism 3, to facilitate tracheobronchial stent implantation. This invention can be operated without positioning under fluoroscopy, and its hardware requirements and operator skill requirements are not high.

[0089] The tracheobronchial stent 200 is fitted onto the guide tube 2. The tracheobronchial stent 200 is fitted onto the outside of the operating section 22, that is, the tracheobronchial stent 200 is located on the stent pusher 100 at the end opposite to the handle 1; and the tracheobronchial stent 200 does not coincide with the side hole 23.

[0090] Preferably, the tracheobronchial stent 200 is a deformable tracheobronchial stent 200. Specifically, the tracheobronchial stent 200 can be an elastic tracheobronchial stent 200.

[0091] In one embodiment of this specification, the tracheobronchial stent 200 has the following main features: (1) easy to implant and remove; (2) good expansion ability without causing damage to the tracheal mucosa; (3) available in various sizes to suit various tracheal stenosis; (4) able to maintain the implanted position without moving; (5) does not irritate the tracheal mucosa, aggravate infection, or promote granulation tissue formation; (6) does not obstruct tracheal drainage; and (7) does not inhibit ciliary movement or the function of clearing secretions.

[0092] The method of covering the tracheobronchial stent 200 is not limited here.

[0093] In one embodiment of this specification, the tracheobronchial stent 200 can be a tracheobronchial stent 200 woven from alloy wires. These alloy wires possess excellent elasticity and shape memory effect, deforming under external force and returning to their original shape after the force is removed, facilitating their application in medical implants. Specifically, under external force, the tracheobronchial stent can be folded and maintained in a folded state, with its length direction remaining unchanged and its diameter decreasing; when no external force is applied, the tracheobronchial stent 200 automatically returns to its unfolded state.

[0094] Therefore, to facilitate the delivery of the tracheobronchial stent 200, it needs to be folded and held in place before reaching the target position. In one embodiment of this specification, a release line 300 is also provided. The target position refers to the tracheal position where the tracheobronchial stent 200 is needed for support, that is, the position where the tracheobronchial stent 200 changes from its folded state to its unfolded state.

[0095] The release line 300 enters the guide tube 2 through the operating port 11 and the connecting port 12, and extends out of the guide tube 2 through the side hole 23. At this time, the pull section of the release line 300 extends out of the guide tube 2 through the first channel 13; the transition section of the release line 300 is located inside the guide tube 2; the winding section of the release line 300 extends out of the guide tube 2 through the side hole 23 and is wound around the tracheobronchial stent 200. The release line 300 extending from the side hole 23 is wrapped around the outside of the tracheobronchial stent 200, binding the tracheobronchial stent 200 so that the tracheobronchial stent 200 is in a folded state under the binding of the release line 300 (under the action of external force) and is stationary relative to the guide tube 2. The side of the tracheobronchial stent 200 closest to the outer end of the guide tube 2 is designated as the outer end of the tracheobronchial stent 200. When the release line 300 is pulled, the outer end of the tracheobronchial stent 200 unfolds first.

[0096] This manual provides a bundling method, such as... Figure 5 As shown in the diagram, the left side represents the inner end of the tracheobronchial stent 200, and the right side represents the outer end. End A is the end point (tail) of the winding section of the release line 300. When the release line 300 is pulled, end B is pulled off first, causing the outer end of the tracheobronchial stent 200 to unfold first. Based on the continuous pulling of the release line 300 under external force, the tracheobronchial stent 200 gradually unfolds from right to left. Of course, other binding methods can also be used, and are not limited here.

[0097] To facilitate control of the release line 300 and the pull release line 300, such as Figure 6 As shown, in one embodiment of this specification, the pull section of the release line 300 is connected to a pulling mechanism 400 for assisting in pulling out the release line 300; the pulling mechanism 400 is fixedly connected to the release line 300. The pulling mechanism 400 is a pull buckle. Preferably, the pull buckle is annular.

[0098] To prevent the release line 300 from being pulled into the guide pipe 2, the diameter of the pulling mechanism 400 is larger than the diameter of the operating port 11.

[0099] When the release line 300 is connected to the tracheobronchial stent 200, the tracheobronchial stent 200 is in a folded state; when the release line 300 is disconnected from the tracheobronchial stent 200, the tracheobronchial stent 200 returns to its unfolded state.

[0100] Since the release line 300 is fastened to the tracheobronchial stent 200 by a snap fastener, a protective mechanism 14 is provided on the side wall of the handle 1 to prevent the tracheobronchial stent 200 from being prematurely untied due to accidental pulling of the release line 300 before the stent pusher 100 enters the target position. The protective mechanism 14 is detachably connected to the pulling mechanism 400.

[0101] The protection mechanism 14 and the operating port 11 are arranged parallel to each other along the length of the handle 1; the protection mechanism 14 and the operating port 11 are arranged along the circumference of the handle 1.

[0102] like Figure 7 As shown, the protection mechanism 14 includes: a plurality of limiting components 141; the plurality of limiting components 141 are arranged in a circumferential direction, and the pulling mechanism 400 is engaged between all the limiting components 141.

[0103] like Figure 8 As shown, in one embodiment of this specification, there are two limiting components 141; the two limiting components 141 are arranged opposite to each other.

[0104] The limiting component 141 includes a fixing member and a snap-fit ​​member; the fixing member is located between the snap-fit ​​member and the handle 1; one end of the fixing member is fixedly connected to the handle 1; the other end of the fixing member is fixedly connected to the tail of the snap-fit ​​member; the fixing member is perpendicular to the handle 1; the distance between the tops of any two snap-fit ​​members is less than the outer diameter of the pulling mechanism 400, and the distance between the tails of two opposite snap-fit ​​members is slightly greater than the outer diameter of the pulling mechanism 400, thereby allowing the pulling mechanism 400 to be snapped into the limiting component 141. The fixing member has a rectangular cross-section, and both the snap-fit ​​member and the snap-fit ​​member have rectangular cross-sections.

[0105] This invention allows for the determination of the implantation location based on the stent pusher 100, and the delivery and release of the tracheobronchial stent 200 pre-installed on the disposable stent pusher 100 through visual delivery, thereby reducing the occurrence of inaccurate tracheobronchial stent positioning.

[0106] This invention allows for the design of multiple implantable devices based on the different diameters of the tracheobronchial stent 200. Subsequently, the diameter of the bronchial stent is typically determined to be 1.3 times the diameter of the narrowed airway segment, thus allowing for the selection of the appropriate implantable device. After the tracheobronchial stent regains its shape, it fits tightly against the tracheal wall, minimizing displacement. When selecting the implantable device, to prevent restenosis caused by tumor growth at both ends of the tracheobronchial stent, the tracheobronchial stent 200 in the implanted device should extend 5-10 mm beyond each end of the narrowing. The excellent hyperelasticity of the tracheobronchial stent allows it to conform to the curvature of the trachea and bronchi, maintaining airway patency.

[0107] The following is a brief description of the usage process:

[0108] Based on the anatomical characteristics and lesions of different parts of the patient's trachea and bronchi, the appropriate size of the tracheobronchial stent 200 is determined, and the corresponding implantation device is selected.

[0109] After local anesthesia and sedation, the distal end of the stent pusher 100 is inserted into the tracheobronchus through the nasal cavity or oral cavity, or into the tracheobronchus through an artificial airway under general anesthesia.

[0110] When the tracheobronchial stent is deployed, the distal end of the narrowed bronchus (the outer end of the guide tube 2) is flared out. Once the tracheobronchial stent 200 is deployed, it also quickly expands into a flared shape, generating a thrust that propels the stent 200 distally, causing it to pass over the distal end of the narrowed bronchus. To prevent this, the release line 300 is quickly pulled back as soon as the distal end of the stent 200 slightly exceeds the narrowed area, simultaneously expanding the entire stent and preventing it from sliding into the distal bronchus. Therefore, when the guide tube 2 of the stent pusher 100 reaches the target position (narrow section), one end of the guide tube 2 is made to pass the target position by about 5-10mm for accurate positioning. After positioning, the operator uses one hand to keep the operating handle 1 stable, and the other hand takes out the pulling mechanism 400 that is locked in the protection mechanism 14, and pulls back the pulling mechanism 400 to retract the release line 300 to start releasing the tracheobronchial stent 400. At this time, the release line 300 binding the tracheobronchial stent 200 is untied sequentially along the long axis of the tracheobronchial stent 200 from the distal end (outer end of the guide tube 2), and the tracheobronchial stent 200 gradually unfolds from the distal end of the guide tube 2. After confirming that the tracheobronchial stent 200 has started to unfold, as the release line 300 is untied, the tracheobronchial stent 200 is released towards the operating handle 1, and the tracheobronchial stent 200 gradually unfolds. After the middle section of the tracheobronchial stent 200 is aligned with the narrowed area, the release line 300 is fully pulled open to completely release the tracheobronchial stent 200. Figure 9 As shown.

[0111] The tracheobronchial stent 200 was visually observed through the lens mechanism 3 to confirm that its shape was well restored, that it fit tightly against the airway wall, and that the narrowed part of the airway was opened by the tracheobronchial stent 200. Finally, the stent pusher 100 was withdrawn from the patient's body.

[0112] The embodiments described above are only used to illustrate the technical ideas and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. The scope of patent application of this utility model should not be limited by these embodiments. That is, any equivalent changes or modifications made in accordance with the spirit disclosed in this utility model still fall within the patent scope of this utility model.

Claims

1. An implant device, characterized in that, include: Stent pusher (100), tracheobronchial stent (200), and release line (300); The support pusher (100) is flexible and / or visible; the support pusher (100) includes a handle (1), a flexible guide tube (2), and a lens mechanism (3) connected in sequence. The tracheobronchial stent (200) is sleeved on the stent pusher (100) at one end near the lens mechanism (3); One end of the release line (300) is located at the handle, and the other end of the release line (300) is wrapped around the tracheobronchial support (200).

2. An implant device as in claim 1, wherein, The release line (300) is located outside the support pusher (100).

3. An implant device as in claim 1, wherein, The handle has a first channel (13); the first channel (13) is connected to the guide pipe (2); The guide pipe (2) is provided with a side hole (23); the side hole (23) does not coincide with the tracheobronchial stent (200); The release line (300) passes sequentially through the first channel (13), the interior of the guide pipe (2), and the side hole (23).

4. An implant device as in claim 3, wherein, The handle (1) is provided with an operation port (11) and a connection port (12), and the operation port (11) and the connection port (12) form the first channel (13); The operating port (11) is located on the side wall of the handle (1); the connection port (12) is located at the same end of the handle (1) as the lens mechanism (3); the connection port (12) is connected to the guide pipe (2).

5. An implant device as in claim 1, wherein, One end of the release line (300) is connected to a pulling mechanism (400) for assisting in pulling out the release line (300); a protective mechanism (14) is provided on the side wall of the handle (1) to prevent the pulling mechanism (400) from being pulled accidentally; The pulling mechanism (400) is detachably connected to the protection mechanism (14).

6. An implantable device as described in claim 5, characterized in that, The pulling mechanism (400) is a pull buckle.

7. An implant device as in claim 5, wherein, The protection mechanism (14) includes: a plurality of limiting components (141); Several of the limiting components (141) are arranged in a circumferential direction, and the pulling mechanism (400) is engaged between all of the limiting components (141).

8. An implantable device as described in claim 7, characterized in that, The number of the limiting components (141) is two; the two limiting components (141) are arranged opposite to each other.

9. An implant device as in claim 1, wherein, The lens mechanism (3) includes a wire and a lens assembly; One end of the wire is electrically connected to the power source via the handle (1); the other end of the wire is electrically connected to the lens assembly; the lens assembly is fixed at the far end of the guide pipe (2).

10. An implant device as in claim 1, wherein, The tracheobronchial stent (200) is a deformable tracheobronchial stent (200); When the release line (300) is connected to the tracheobronchial stent (200), the tracheobronchial stent (200) is in a folded state. After the release line (300) is disconnected from the tracheobronchial stent (200), the tracheobronchial stent (200) automatically returns to its deployed state.

Images