Adjustable double-layer cuff occluder

Abstract

The present invention provides an adjustable double-layer cuff occluder, which relates to the technical field of medical devices, including a catheter, a cuff, a bending section and an adjustment component, wherein the bending section is connected to the catheter for adjusting the angle of the cuff, and the adjustment component is used to adjust the degree of curvature of the bending section. The cuff is arranged at the cuff installation section, and the cuff installation section includes a part of the bending section area, and the cuff includes an inner cuff and an outer cuff that are nested. By setting the bending section and the adjustment component, the cuff blocking angle can be adjusted according to the patient's airway structure, and medical staff can effectively avoid the phenomenon of incomplete blocking during use, thereby improving the reliability of blocking. The position of the cuff on the bending section or the catheter can be adjusted to obtain a larger adjustable range, making it more convenient to adjust the angle of the occluder in the airway, and being able to reach the blocking position conveniently and accurately.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to an adjustable double-layer cuff occluder. Background Art

[0002] The disposable endobronchial tubes currently available on the market are mainly fixed-angle occluders with a narrow scope of application. Their main defects are: the front end angle of the occluder is fixed, and it is impossible to occlude variant airways, and patients with airway variants cannot receive rapid and effective treatment; during the insertion process, the fixed-angle occluder has strong friction with the endobronchial tube due to the angle problem, which can easily damage the cuff; and the cuff position of the traditional occluder is fixed, and sometimes it is difficult to reach the occlusion position. In view of the above defects, the present application is proposed. Summary of the invention

[0003] The purpose of the present invention is to provide an adjustable double-layer cuff occluder, and to provide an endobronchial tube occluding device with adjustable cuff angle and position.

[0004] In order to solve the above problems, the present invention provides an adjustable double-layer cuff occluder, comprising a catheter, a cuff, a bending adjustment section and an adjustment component, wherein the bending adjustment section is connected to the catheter for adjusting the angle of the cuff, and the adjustment component is used to adjust the bending degree of the bending adjustment section. The cuff is arranged at the cuff installation section, and the cuff installation section includes a part of the bending adjustment section area. The cuff includes an inner cuff and an outer cuff that are nested, and a contraction cavity is formed between the inner cuff and the outer cuff. When the contraction cavity is inflated, the outer cuff expands to achieve the purpose of blocking the trachea.

[0005] Furthermore, the cuff can be position-adjusted, the inner cuff is larger than or equal to the outer diameter of the cuff mounting section, and when the contraction cavity is inflated, the inner cuff is pressed tightly against the cuff mounting section under the influence of the gas pressure, thereby achieving the purpose of fixing the cuff. When part of the gas is pumped out, the cuff is in a natural state, and since the inner diameter of the inner cuff is larger than or equal to the outer diameter of the cuff mounting section, the position of the cuff on the cuff mounting section can be adjusted. When all the gas is pumped out, the cuff shrinks and wrinkles, and is tightly attached to the cuff mounting section, thereby achieving the purpose of fixing.

[0006] Furthermore, the cuff installation section also includes a portion of the catheter area.

[0007] Furthermore, the cuff is arranged at a fixed position, and the inner cuff is connected to the catheter.

[0008] Furthermore, the adjustment component includes an adjustment shaft, a wire fixing portion is provided on the adjustment shaft, the bending adjustment section is composed of a plurality of snake bone blocks, an adjustment structure is connected to the snake bone blocks, the wire fixing portion and the adjustment structure are connected by wires, and the length of the wires is changed by rotating the adjustment shaft to adjust the bending degree of the bending adjustment section.

[0009] Furthermore, the adjustment assembly also includes an angle valve seat, an adjustment knob, a shaft cover and an upper cover, the angle valve seat is installed on the conduit, the adjustment shaft is installed in the angle valve seat, the adjustment knob is connected to the adjustment shaft through the shaft cover, and the upper cover is installed on the angle valve seat so that the adjustment shaft is located in a closed space.

[0010] Furthermore, an identification panel is provided on the angle valve seat, and the identification panel is used to indicate the rotation angle of the adjustment shaft.

[0011] Furthermore, the adjustment component also includes a bonding shaft, the bonding shaft is installed on the catheter, the adjustment shaft is rotatably installed on the outside of the bonding shaft, the adjustment shaft, the bonding shaft and the catheter are coaxially arranged, and the silk thread passes through the catheter, the bonding shaft and the adjustment shaft.

[0012] Furthermore, the adjustment assembly also includes a locking assembly, and the locking assembly is used to lock the position of the adjustment shaft.

[0013] Furthermore, the adjustment structure is provided with two groups, namely a left adjustment structure and a right adjustment structure, and two silk threads are also provided, respectively connected with the left adjustment structure and the right adjustment structure.

[0014] Furthermore, a visual cavity, an adjustment cavity and an inflation cavity are provided in the conduit, and the visual cavity is used for the passage of a camera power line.

[0015] Furthermore, the adjustable double-layer cuff occluder also includes an inflation device and / or an automatic inflation device for inflating the cuff.

[0016] The beneficial effect of the present invention is that by setting the bending section and the adjustment component, the cuff blocking angle can be adjusted according to the patient's airway structure. Medical staff can effectively avoid incomplete blocking during use, which improves the reliability of blocking while greatly improving the patient's experience. By setting a double-layer cuff, the position of the cuff on the bending section or the catheter can be adjusted to obtain a larger adjustable range, making it more convenient to adjust the angle of the occluder in the airway, and the blocking position can be reached conveniently and accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the overall structure of the adjustable double-layer cuff occluder;

[0019] Figure 2 for Figure 1 A magnified schematic diagram of the structure at B in the middle;

[0020] Figure 3is a side view of the adjustment assembly;

[0021] Figure 4 An exploded schematic diagram of the adjustment components;

[0022] Figure 5 is a cross-sectional view of the catheter;

[0023] Figure 6 It is a schematic diagram of the bending section structure;

[0024] Figure 7 It is an exploded schematic diagram of the structure of the connection between the bending section, the catheter and the cuff;

[0025] Figure 8 is a schematic diagram of the cross-sectional structure of the cuff;

[0026] Fig. 9 This is a schematic diagram of the overall structure of the adjustment component in Example 3;

[0027] Fig.10 This is a schematic diagram of the decomposition of the adjustment component in Example 3;

[0028] Fig.11 It is a structural schematic diagram of a bonding shaft 1 of the adjustment component in Example 3;

[0029] Fig.12 It is a structural schematic diagram of a rotating shaft of the adjusting assembly in Example 3;

[0030] Fig.13 A schematic diagram of another structure of the inner cuff. DETAILED DESCRIPTION

[0031] The following description is only used to disclose the present invention so that those skilled in the art can implement the present invention. The embodiments described below are only for example, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other solutions that do not deviate from the spirit and scope of the present invention.

[0032] [Example 1]

[0033] Adjustable double-cuff occluder, such as Figure 1 , comprising a catheter 1, a cuff 2, a bending section 11 and an adjusting component 14, wherein the bending section 11 is connected to the catheter 1 for adjusting the angle of the cuff 2, the adjusting component 14 is used to adjust the bending degree of the bending section 11, the cuff 2 is arranged at the cuff installation section, and the cuff installation section includes a part of the bending section 11 area, such as Figure 8The cuff 2 includes an inner cuff 202 and an outer cuff 201 which are nested. The inner cuff 202 is larger than or equal to the outer diameter of the cuff installation section. The inner cuff 202 and the outer cuff 201 are bonded and connected to form a contraction cavity 205 therebetween. When the contraction cavity 205 is inflated, the outer cuff 201 expands to block the trachea. At the same time, under the influence of the gas pressure, the inner cuff 202 is tightly pressed against the cuff installation section to fix the cuff 2. When part of the gas is removed, the cuff 2 is in a natural state. Since the inner diameter of the inner cuff 202 is larger than or equal to the outer diameter of the cuff installation section, the position of the cuff 2 on the cuff installation section can be adjusted. When all the gas is removed, the cuff 2 shrinks and wrinkles, and is tightly attached to the cuff installation section to fix the cuff 2.

[0034] Specifically, an inflation tube insertion position 203 is provided at the end positions of the inner cuff 202 and the outer cuff 201, and the inflation tube 16 is connected here and bonded to the inner cuff 202 and the outer cuff 201. The through cavity 204 in the inner cuff 202 is sleeved on the cuff mounting section. The inner diameter of the inner cuff 202 is preferably larger than the outer diameter of the cuff mounting section, and the resistance is small during movement. In other embodiments, the inner diameter of the inner cuff 202 can also be equal to the outer diameter of the cuff mounting section. The shape of the inner cuff 202 can be set to Figure 8 The shape in the middle, that is, the diameter at the position of the contraction cavity 205 is larger, and the diameters on both sides are smaller, which is further convenient for movement, and can also be set as Fig.13 The straight cylindrical structure.

[0035] The position of the cuff 2 can be adjusted by pulling the inflation tube 16 (the inflation tube 16 is movable), or by setting a cuff position adjustment structure such as a pull wire (extending through the inside or outside of the catheter and connected to the inner cuff 202 and / or the outer cuff 201). It is also possible to adjust the position of the cuff 2 by simply pulling the catheter without setting a cuff position adjustment structure.

[0036] The bending adjustment section 11 can adopt a snake tube structure or other bendable structures, and the bending adjustment is performed by pulling with silk thread. In this embodiment, the adjustment component 14 includes an angle valve seat 29 and an adjustment shaft 28. The angle valve seat 29 is connected to the catheter 1, and the adjustment shaft 28 is installed on the angle valve seat 29. A silk thread fixing portion 33 is provided on the adjustment shaft 28. The silk thread fixing portion 33 is arranged in the winding groove 34. The silk thread fixing portion 33 is a hole or a pin. The bending adjustment section 11 is composed of a plurality of snake bone blocks 26. The snake bone blocks 26 are connected with an adjustment structure. The silk thread fixing portion 33 is connected to the adjustment structure by silk thread. By rotating the adjustment shaft 28, the length of the silk thread changes to adjust the bending degree of the bending adjustment section 11. Preferably, the adjustable bending degree is between 0 and 210° or 0 and 180°.

[0037] Specifically, the adjusting shaft 28 is installed in a closed space to protect the wire from pollution. Figure 2-Figure 4 The angle valve seat 29 is mounted on the conduit 1. The angle valve seat 29 is provided with an identification panel, which is used to indicate the rotation angle of the adjustment shaft 28. The adjustment component 14 also includes an adjustment knob 31, a shaft cover 30 and an upper cover 32. The adjustment knob 31 is connected to the adjustment shaft 28 through the shaft cover 30 to play a supporting role. The upper cover 32 is installed on the angle valve seat 29 so that the adjustment shaft 28 is located in a closed space. Furthermore, in order to achieve the effect of fixing the position after adjusting the angle, the adjustment component 14 also includes a locking component. In this embodiment, the locking component includes a clamping structure provided on the shaft cover 30 and the angle valve seat 29, such as Figure 4 The shaft cover 30 is spline-connected to the adjusting shaft 28, a snap-fitting protrusion is provided on the shaft cover 30, and a snap-fitting groove is provided in the angle valve seat 29. In other embodiments, the adjusting knob 31 may also be provided with a plum blossom-shaped snap-fitting protrusion, and a corresponding snap-fitting groove is provided in the angle valve seat 29. When adjusting the angle, the adjusting knob 31 is pulled outward to disengage the snap-fitting protrusion from the snap-fitting groove, and the adjusting knob 31 is rotated to wind or loosen the wire to adjust the bending angle. After the adjustment is completed, the adjusting knob 31 is pressed back, and the snap-fitting protrusion cooperates with the snap-fitting groove to achieve locking.

[0038] The cuff installation section is located on the bending adjustment section 11, and the position of the cuff 2 on the bending adjustment section 11 can be adjusted to obtain a larger adjustment range and a more precise adjustment effect, such as Figure 7 The outer side of the bending section 11 can be covered with an outer rubber tube 18. When covered with the outer rubber tube 18, the inner cuff 202 is located outside the outer rubber tube 18, and an inner rubber tube 17 connected to the catheter 1 is arranged inside. The outer rubber tube 18 is used to wrap the snake bone. The inner rubber tube 17 is placed inside the snake bone and connected to the catheter 1 to achieve functions such as sputum suction. The reducing steel sleeve 15 is connected to the outer rubber tube 18 and the catheter 1 to connect the catheter and the snake bone to play a role of reducing diameter and supporting. By replacing different types of reducing steel sleeves 15, The catheter 1 and cuffs of different diameters can be adapted. For example, a small cuff can be connected to a large-sized occluder. The inflation tube 16 is arranged at the inflation cavity 24 in the catheter 1, and the other end extends into the cuff 2 to inflate the cuff 2. The outer part of the inflation tube 16 and the outer rubber tube 18 can be optionally covered with a protective rubber tube 20 to protect the inflation tube 16 and prevent gas leakage. The protective rubber tube 20 is not arranged in the moving area of ​​the cuff 2, and an easily retractable protective rubber tube 20 can also be arranged in the moving area of ​​the cuff 2.

[0039] In this embodiment, Figure 5The adjusting structure includes an adjusting wire that passes through the snake bone block 26 in sequence and an adjusting block connected to the end of the adjusting wire, the wire is connected to the adjusting block, and the adjusting structure is provided with two groups, namely a left adjusting structure 27 and a right adjusting structure 25, which are connected to the two sides of the bending adjustment section 11 composed of a plurality of snake bone blocks 26, for realizing angle adjustment in two directions. The snake bone block 26 can be a separate block structure combined into the bending adjustment section 11, or it can be a tubular structure, and a plurality of grooves are provided on the tubular structure to realize the bending effect of the bending adjustment section 11, and any snake bone tube in the prior art can also be used, and it is necessary to ensure that it has a certain strength when not bending, so as to ensure that it will not bend during the catheterization process; it should be noted that the adjusting structure is not limited to setting one or two groups, and multiple groups can also be set to achieve the adjustable bending effect in multiple directions. Accordingly, the number of wires set is the same as the number of adjusting structures set. When two wires are set, the adjusting component 14 can be set in one or two groups. When one group is set, such as Figure 4 Two wire fixing parts 33 can be symmetrically arranged on the adjustment shaft 28. After the two wires pass through the catheter, they are both wound half a circle at the winding groove 34 and connected to the wire fixing parts 33. When adjusting the angle, the wire on one side is tightened for bending, and the wire on the other side can be relaxed with a half circle margin. In addition, when N wires are set, the adjustment component 14 can be set in N groups or N / 2 groups.

[0040] Titanium wire is generally used as the wire. Other materials can also be used while ensuring that the cleanliness requirements are met and the strength is sufficient.

[0041] like Figure 5 In this embodiment, the catheter 1 is a five-lumen tube, with the main cavity in the middle, which is used for suctioning sputum and other operations. A visual cavity 21, an adjustment cavity 1 22, an adjustment cavity 23 and an inflation cavity 24 are arranged around the main cavity. The visual cavity 21 is used for the camera power cord to pass through, and the visual effect is achieved by installing the camera component. It should be noted that the number of adjustment cavities and silk threads is generally consistent. The silk thread is extended from the adjustment cavity, and a hole is punched in the catheter at the adjustment component 14 for the silk thread to pass through.

[0042] In this embodiment, an inflation device 5 and / or an automatic inflation device 4 connected to the cuff 2 is installed on the catheter 1 for inflating the cuff 2. In other embodiments, the inflation device 5 and the automatic inflation device 4 may be only one of the two groups. The inflation device 5 is a joint, and the automatic inflation device 4 includes a valve body 42 and an air storage bag 41. The air storage bag 41 is pre-filled with gas. After the valve body 42 is opened, the gas in the pre-filled air storage bag 41 inflates the cuff.

[0043] The catheter 1 is provided with an adapter joint 3, which can be used to connect with the pipeline of the anesthesia machine, the lower bronchoscope and the sputum suction tube.

[0044] Embodiment 2:

[0045] On the basis of Example 1, the cuff installation section also includes a portion of the catheter 1 area, where the portion of the catheter 1 area is the inner rubber tube 17 section, and the inner rubber tube 17 is connected to the catheter 1 and can be regarded as a part of the catheter 1, so that the cuff 2 can be moved and adjusted within a larger range, and the position of the occluder head end can be controlled, making it more convenient to adjust the angle of the occluder in the airway, and the occlusion position can be reached conveniently and accurately.

[0046] Embodiment 3: The adjustment component 14 in this embodiment is different from that in Embodiment 1 or 2, such as Figure 9-12 The adjusting component includes a fixing cover 35, a bonding shaft 1 36, a bonding shaft 2 37, a rotating shaft 1 38 and a rotating shaft 2 29. The bonding shaft 1 36 and the bonding shaft 2 37 are bonded to the catheter 1 with a specific glue to form a bonding shaft as a whole. The bonding shaft 1 36 and the bonding shaft 2 37 are positioned by a concave-convex structure. The clean silk thread drawn from the catheter 1 passes through the wire hole 362 in the bonding shaft. The surfaces of the bonding shaft 1 36 and the bonding shaft 2 37 are provided with a winding groove 361. The rotating shaft 1 38 and the rotating shaft 2 29 are rotatably installed on the outside of the bonding shaft 1 36 and the bonding shaft 2 37. The rotating shaft 1 38 and the rotating shaft 2 29 can also be clamped and positioned by a concave-convex structure. The rotating shaft 1 38 and the rotating shaft 2 29 constitute an adjusting shaft. A screw for connecting with the silk thread is provided on it, and the clean silk thread extends through the winding groove 361 to be connected with the screw, and the screw is installed in the screw hole 381. The silk thread can be adjusted by rotating the rotating shaft. A plum blossom groove 382 is provided on the end face of the rotating shaft, and one end of the fixed cover 35 is provided with a shape matching the plum blossom groove. The fixed cover 35 can be slidably installed on the catheter. After the adjustment of the rotating shaft is completed, the fixed cover 35 is pushed into the plum blossom groove for locking. Similarly, when multiple groups of silk threads are set, the present adjustment component 14 can be set with multiple groups. When two groups of silk threads are set, the present adjustment component 14 can be set with one group or two groups. When one group is set, wire holes are provided on the bonding shaft 1 36 and the bonding shaft 2 37, and screws are provided on the rotating shaft 1 38 and the rotating shaft 2 29.

[0047] The adjusting posture of the adjusting component 14 in this embodiment is different from that of the adjusting component 14 in Embodiment 1, and can be selected according to the situation.

[0048] Embodiment 4 is different from the movably arranged manner of the cuff 2 in Embodiment 1 in that the cuff 2 is arranged in a fixed position, that is, the cuff 2 can be adjusted in angle by relying on the bending section 11, but cannot be adjusted in position, wherein the inner cuff 202 is arranged outside the snake bone block 26 of the bending section 11 and connected to the catheter 1, the inner cuff 202 can replace the outer rubber tube 18, or the outer rubber tube 18 can be arranged, the inner cuff 202 is arranged outside the outer rubber tube 18, the outer cuff 201 is connected to the inner cuff 202, and the inflation tube 16 inflates the contraction cavity 205. This scheme can fully ensure the sealing effect of the contraction cavity 205. If only a single-layer cuff is arranged, the bonding position between the cuff and the catheter is easily affected by the bending of the snake bone, resulting in unreliable sealing. In this scheme, the contraction cavity 205 formed between the inner and outer cuffs has higher sealing reliability.

[0049] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed and modified in any way without departing from the principles.

Claims

1. Adjustable double-layer cuff occluder, characterized by: The invention comprises a catheter (1), a cuff (2), a bending adjustment section (11) and an adjustment component (14); the bending adjustment section (11) is connected to the catheter (1) for adjusting the angle of the cuff (2); the adjustment component (14) is used to adjust the bending degree of the bending adjustment section (11); the cuff (2) is arranged at a cuff installation section; the cuff installation section includes a part of the bending adjustment section (11); the cuff (2) comprises an inner cuff (202) and an outer cuff (201) arranged in a nested manner; a contraction cavity (205) is formed between the inner cuff (202) and the outer cuff (201); when the contraction cavity (205) is inflated, the outer cuff (201) is contracted. 1) expands to achieve the purpose of blocking the trachea; the cuff (2) can be adjusted in position, the inner cuff (202) is larger than or equal to the outer diameter of the cuff installation section, and when the contraction chamber (205) is inflated, the inner cuff (202) is pressed tightly against the cuff installation section under the influence of gas pressure to achieve the purpose of fixing the cuff (2), and part of the gas is extracted. When the cuff (2) is in a natural state, since the inner diameter of the inner cuff (202) is larger than or equal to the outer diameter of the cuff installation section, the position of the cuff (2) on the cuff installation section can be adjusted; when all the gas is extracted, the cuff (2) shrinks and wrinkles, and is tightly attached to the cuff installation section, achieving the purpose of fixing.

2. The adjustable double-layer cuff occluder according to claim 1, characterized in that: The cuff installation section also includes a portion of the catheter (1) area.

3. The adjustable double-layer cuff occluder according to any one of claims 1-2, characterized in that: The adjustment component (14) comprises an adjustment shaft, on which a wire fixing portion (33) is arranged, the bending adjustment section (11) is composed of a plurality of snake bone blocks (26), the snake bone blocks (26) are connected to an adjustment structure, the wire fixing portion (33) and the adjustment structure are connected via a wire, and by rotating the adjustment shaft, the length of the wire changes to adjust the bending degree of the bending adjustment section (11).

4. The adjustable double-layer cuff occluder according to claim 3, characterized in that: The adjustment assembly (14) further comprises an angle valve seat (29), an adjustment knob (31), a shaft cover (30) and an upper cover (32); the angle valve seat (29) is mounted on the conduit (1); the adjustment shaft is mounted in the angle valve seat (29); the adjustment knob (31) is connected to the adjustment shaft via the shaft cover (30); and the upper cover (32) is mounted on the angle valve seat (29), so that the adjustment shaft is located in a closed space.

5. The adjustable double-layer cuff occluder according to claim 4, characterized in that: The angle valve seat (29) is provided with an identification panel, and the identification panel is used to indicate the rotation angle of the adjustment shaft.

6. The adjustable double-layer cuff occluder according to claim 5, characterized in that: The adjustment component (14) further comprises an adhesive shaft, the adhesive shaft is mounted on the catheter (1), the adjustment shaft is rotatably mounted on the outside of the adhesive shaft, the adjustment shaft, the adhesive shaft and the catheter (1) are coaxially arranged, and the silk thread passes through the catheter (1) and is connected to the adhesive shaft and the adjustment shaft.

7. The adjustable double-layer cuff occluder according to any one of claims 4 to 6, characterized in that: The adjustment component (14) also includes a locking component, which is used to lock the position of the adjustment shaft.

8. The adjustable double-layer cuff occluder according to claim 7, characterized in that: The adjustment structure is provided in two groups, namely a left adjustment structure (27) and a right adjustment structure (25), and two silk threads are provided, respectively connected to the left adjustment structure (27) and the right adjustment structure (25).

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