Bronchoscope external cannula with balloon

Abstract

The bronchoscope external cannula comprises a cannula body and the special-shaped sacculus, the special-shaped sacculus is fixed to the outer side of the cannula body, and the special-shaped sacculus is tightly attached to the outer wall of the cannula body in a closed state and is symmetrically distributed along the longitudinal axis of the cannula body after being inflated; the special-shaped balloon further comprises an inflation catheter, and the inflation catheter is fixed to the outer wall of the sleeve and extends to the bronchoscope operation part. According to the bronchoscope external cannula with the balloon, the visual portion and the operation aperture of the bronchoscope in the cannula cannot be affected, bronchoalveolar lavage operation can be conveniently carried out at the far end, and the bronchoscope external cannula with the balloon can be conveniently and accurately placed in a target bronchus.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to an external cannula of a bronchoscope with a balloon. Background Art

[0002] Bronchoalveolar lavage has very important clinical value in the diagnosis of unexplained peripheral pulmonary shadows. Selecting the drainage bronchus in the area where the lesion is located for lavage is a prerequisite for obtaining accurate diagnostic information. With the support of a variety of navigation technologies, an ultra-fine bronchoscope (distal diameter of the insertion part is 3.5 mm or less) can be inserted into the more distal drainage bronchus for more accurate lavage to obtain more valuable specimens, thereby improving diagnostic efficiency. However, in clinical operations, it was found that because the more distal bronchial lumen is thinner and the wall of the tube is not supported by cartilage rings, the lumen often collapses during negative pressure suction, resulting in low recovery efficiency, which in turn leads to low diagnostic efficiency. There is currently no solution to this problem.

[0003] Currently, most balloons are released through guidewires or through endoscopic operation holes, and are usually used for dilation of the central airways, but not for bronchoalveolar lavage. A small number of balloons are external balloons that can be hung at the distal end of the bronchoscope and released freely after reaching the target bronchus. However, they are still essentially blocking balloons, which will block the distal lumen once inflated, and are usually used to stop bleeding. After the lumen is blocked, the bronchoscope will not be able to perform any operations on the distal bronchus, including bronchoalveolar lavage. Summary of the invention

[0004] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the utility model is that the existing bronchoscope cannot accurately lavage the more distal bronchi, and most of the existing balloons are released through a guidewire or through an endoscope operation hole, usually used for dilation of the central airway, and cannot be used for bronchoalveolar lavage. A few external balloons are blocking balloons and cannot support the bronchoscope to perform any operation on the distal bronchi. The utility model provides an external cannula of a bronchoscope with a balloon, which will not affect the visible part and operation aperture of the bronchoscope in the cannula, facilitates bronchoalveolar lavage operations at the distal end, and is conveniently and accurately placed in the target bronchus.

[0005] To achieve the above-mentioned purpose, the utility model provides an external cannula of a bronchoscope with a balloon, comprising a cannula and a special-shaped balloon. The special-shaped balloon is fixed on the outside of the cannula. When the special-shaped balloon is in a closed state, it is tightly attached to the outer wall of the cannula. After being inflated, the special-shaped balloon is symmetrically distributed along the longitudinal axis of the cannula. The special-shaped balloon also includes an inflation catheter, which is fixed on the outer wall of the cannula and extends to the operating part of the bronchoscope.

[0006] Furthermore, the special-shaped balloon is configured as two wing-shaped balloons, which are in a "one" shape after being inflated, and the two wing-shaped balloons are symmetrically distributed along the longitudinal axis of the sleeve to form a "wing shape".

[0007] Furthermore, the length of the sleeve is set to 2 cm.

[0008] Furthermore, the length of the wing-shaped balloon along the longitudinal axis of the sleeve is set to 1 cm.

[0009] Furthermore, after the wing-shaped balloon is inflated, the expansion height is set to 0.5-1.5 mm.

[0010] Furthermore, the balloon and the sleeve are configured to be integrally formed.

[0011] Furthermore, the balloon and the sleeve are configured to be combined and fixed by strong adhesive.

[0012] Furthermore, the sleeve is configured as a silicone sleeve.

[0013] Furthermore, the special-shaped balloon includes one of a floating point, an X-shaped, an S-shaped or other irregular shapes.

[0014] Technical Effects

[0015] The utility model provides an external sleeve of a bronchoscope with a balloon, which can be sleeved on the distal end of an insertion part of an ultra-thin bronchoscope. The balloon outside the sleeve is expanded or closed by an inflation catheter. The balloon is wing-shaped after being expanded, which can support the bronchioles around the distal end of the bronchoscope, thereby avoiding the closure of the lumen caused by negative pressure suction and increasing the efficiency and quality of lavage. The special-shaped balloon will not completely block the lumen after being inflated, thereby ensuring that gas can enter the distal airway during negative pressure suction, which is beneficial to the recovery of lavage fluid. In addition, the special-shaped balloon can fix the position of the ultra-thin bronchoscope after expansion, reducing the need for repeated confirmation of the bronchiolar opening and increasing the lavage efficiency.

[0016] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a bronchoscope external cannula with a balloon in a preferred embodiment of the utility model;

[0018] Figure 2 The utility model is a schematic diagram of a bronchoscope external sleeve with a balloon according to a preferred embodiment of the utility model. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] In the following description, specific details such as specific internal procedures and techniques are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0021] like Figure 1 As shown, the utility model provides an external cannula of a bronchoscope with a balloon, comprising a cannula 1 and a special-shaped balloon 2. The special-shaped balloon 2 is fixed on the outside of the cannula 1. When the special-shaped balloon is in a closed state, it is tightly attached to the outer wall of the cannula. After being inflated, the special-shaped balloon is symmetrically distributed along the longitudinal axis of the cannula. The special-shaped balloon 2 also includes an inflation catheter 3, which is fixed on the outer wall of the cannula and extends to the operating part of the bronchoscope.

[0022] like Figure 1 As shown, in this embodiment, the length of the sleeve is set to 2 cm. The special-shaped balloon is set to two wing-shaped balloons. After being inflated, the wing-shaped balloons are in an "I" shape, and the two wing-shaped balloons are symmetrically distributed along the longitudinal axis of the sleeve to form a "wing shape". The length of the wing-shaped balloon along the longitudinal axis of the sleeve is set to 1 cm. After the wing-shaped balloon is inflated, the expansion height is set to 0.5-1.5 mm. The two wing-shaped balloons are respectively arranged on both sides of the sleeve and are symmetrically distributed. The two wing-shaped balloons are each provided with an inflation catheter, and the inflation catheters of the two wing-shaped balloons converge at a position not exceeding the upper edge of the sleeve and then extend outward to the body. The two wing-shaped balloons are inflated and deflated by a syringe outside the body.

[0023] The balloon and the sleeve are arranged to be integrally formed. In another embodiment, the balloon and the sleeve are arranged to be combined and fixed by strong adhesive.

[0024] The sleeve is set to be a silicone sleeve.

[0025] In another embodiment, the special-shaped balloon includes one of a floating point, an X-shaped, an S-shaped or other irregular shapes. The special-shaped balloon does not need to be arranged in a closed manner around the sleeve.

[0026] The utility model discloses an external sleeve for a bronchoscope with a balloon, which includes various lengths and materials and can be adapted not only to ultra-thin bronchoscopes but also to bronchoscopes of various models.

[0027] like Figure 2As shown, a bronchoscope external sleeve with a balloon in the utility model is placed at the distal end of the insertion part of the ultra-thin bronchoscope 5 before use, and the inflation catheter of the balloon is fixed on the operating part of the ultra-thin bronchoscope 5. The ultra-thin bronchoscope is inserted into the distal bronchus in a conventional manner. After insertion, the special-shaped balloon 2 is inflated by the inflation catheter 3 using a syringe 4 to expand the special-shaped balloon, thereby supporting the bronchus and avoiding the closure of the lumen caused by negative pressure suction. The special-shaped balloon does not completely block the lumen, ensuring that gas can enter the distal airway during negative pressure suction, which is beneficial to the recovery of the lavage fluid.

[0028] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A bronchoscope external cannula with a balloon, characterized in that: The special-shaped balloon comprises a sleeve and a special-shaped balloon, wherein the special-shaped balloon is fixed on the outside of the sleeve, and is tightly attached to the outer wall of the sleeve when in a closed state, and is symmetrically distributed along the longitudinal axis of the sleeve after being inflated; the special-shaped balloon also comprises an inflation catheter, which is fixed on the outer wall of the sleeve and extends to the operating part of the bronchoscope.

2. A bronchoscope external cannula with a balloon as claimed in claim 1, characterized in that: The special-shaped balloon is configured as two wing-shaped balloons, which are in a "one" shape after being inflated, and the two wing-shaped balloons are symmetrically distributed along the longitudinal axis of the sleeve to form a "wing shape".

3. The bronchoscope external cannula with a balloon as claimed in claim 1, characterized in that: The length of the sleeve is set to 2 cm.

4. The bronchoscope external cannula with a balloon as claimed in claim 2, characterized in that: The length of the wing-shaped balloon along the longitudinal axis of the sleeve is set to 1 cm.

5. The bronchoscope external cannula with a balloon as claimed in claim 4, characterized in that: After the wing-shaped balloon is inflated, the expansion height is set to 0.5-1.5 mm.

6. The bronchoscope external cannula with a balloon as claimed in claim 1, characterized in that: The balloon and the sleeve are configured to be integrally formed.

7. The bronchoscope external cannula with a balloon as claimed in claim 1, characterized in that: The balloon and the sleeve are configured to be combined and fixed by strong adhesive.

8. The bronchoscope external cannula with a balloon as claimed in claim 1, characterized in that: The sleeve is configured as a silicone sleeve.

9. The bronchoscope external cannula with a balloon as claimed in claim 1, characterized in that: The special-shaped balloon includes one of a floating point, an X-shaped and an S-shaped balloon.

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