Synchronously rotating choledochoscope cell brush

Abstract

The utility model discloses a choledochoscope cell brush capable of rotating synchronously, which comprises a front handle and a rotating operation handle, and is characterized in that the front handle is fixedly connected with an outer sleeve, the outer sleeve is connected with a boosting tube in a sliding manner, the boosting tube is fixedly connected with the rotating operation handle, and the rotating operation handle can control a far-end cell brush to rotate forwards and backwards synchronously. The far end of the boosting tube is riveted with a synchronous rotating double-twisted-wire inhaul cable, a guide head is arranged at the far end of the synchronous rotating double-twisted-wire inhaul cable, a cell brush is arranged in the middle of the synchronous rotating double-twisted-wire inhaul cable, and the outer sleeve moves back and forth to collect the far-end cell brush into the outer sleeve. The device solves the problems that a current cytobrush is low in focus sampling positive rate, multiple times of sampling are needed, and the biopsy positive rate is increased.

Description

Technical Field

[0001] The utility model belongs to the technical direction of medical equipment, and specifically relates to a synchronously rotatable biliary endoscopic cell brush. Background Art

[0002] When patients with unexplained biliary stricture undergo endoscopic retrograde cholangiopancreatography (ERCP), samples need to be taken for histological or cytological examination to distinguish benign from malignant and to guide the selection of further treatment measures.

[0003] Currently, the ERCP choledochoscope includes an objective channel and an instrument channel. The sample that can be extracted by the cell brush entering through the instrument channel is limited, which affects the accuracy of the test results to a certain extent.

[0004] Therefore, it is necessary to design a synchronously rotating choledochoscope cytology brush with a large sampling volume. Utility Model Content

[0005] The purpose of the utility model is to provide a synchronously rotating choledochoscope cell brush for existing devices to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a synchronously rotatable biliary endoscope cell brush, comprising a front handle 1 and a rotating operating handle 2, the front handle 1 being threadedly connected to an outer sleeve 3, the outer sleeve 3 being slidably connected to a booster tube 4, the booster tube 4 and the rotating operating handle 2 being commonly connected to a motor 21, a forward button 22 and a reverse button 23 being provided on one side of the rotating operating handle 2, the distal end of the booster tube 4 being threadedly connected to a synchronously rotating double-twisted wire cable 5, a guide head 31 being provided at the front end of the synchronously rotating double-twisted wire cable 5, a cell brush 51 being provided in the middle of the synchronously rotating double-twisted wire cable 5, and the outer sleeve 3 being slidably connected to a biliary endoscope 6.

[0007] The present utility model further illustrates that the choledochoscope 6 is of prior art, comprising: a choledochoscope main unit, a mirror tube, and an objective lens; the choledochoscope main unit is connected to the proximal end of the mirror tube, and the objective lens is installed at the distal end of the mirror tube; the mirror tube is provided with an objective lens channel and an instrument channel, the objective lens is installed at the distal end of the objective lens channel, and the outer sleeve 3 extends from the proximal end of the instrument channel and extends from the distal end of the instrument channel to the field of view of the objective lens.

[0008] The utility model further illustrates that the motor is a micro motor that can rotate forward or reverse, and a high-frequency vibration motor can be selected.

[0009] The present invention further illustrates that the outer diameter of the outer sleeve 3 is between Φ0.8 and Φ2 mm.

[0010] The present invention further explains that the cell brush 51 can be selected to be 2mm, 3mm, 4mm, or 5mm to cope with different lesions.

[0011] The present invention further explains that the cell brush 51 can be made of a relatively soft or relatively hard material. For special lesions, a cell brush made of a relatively soft material can be used to take samples in a non-invasive or minimally invasive manner.

[0012] The utility model further describes

[0013] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0014] (1) The cytobrush is rotatable by being equipped with a motor, a booster tube, and a synchronously rotating double-twisted wire cable, which has the advantage of large sampling volume and increased test accuracy; BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a partial cross-sectional schematic diagram of the present utility model;

[0018] Figure 3 It is a partially enlarged schematic diagram of the utility model;

[0019] Figure 4 It is a partially enlarged schematic diagram of the utility model;

[0020] Figure 5 It is a schematic diagram of the device of the utility model;

[0021] In the figure: 1. Front handle; 2. Rotating operating handle; 21. Motor; 22. Forward button; 23. Reverse button; 3. Outer cannula; 31. Guide head; 4. Booster tube; 5. Synchronously rotating double-twisted wire cable; 51. Cytology brush; 6. Choledoscopic endoscope. DETAILED DESCRIPTION

[0022] The following is a non-limiting detailed description of the technical solution of the present invention in conjunction with preferred embodiments and their accompanying drawings. Obviously, the described embodiments are only a portion of the embodiments of the present invention, and not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0023] See also Figure 1-5 The utility model provides a technical solution: a synchronously rotatable choledochoscope cell brush, comprising a front handle 1 and a rotating operating handle 2, the front handle 1 is fixedly connected to the outer tube 3, the outer tube 3 is slidably connected to the booster tube 4, the booster tube 4 and the rotating operating handle 2 are fixedly connected, a motor 21 is arranged inside the rotating operating handle 2 to control the synchronous forward and reverse rotation of the distal cell brush, a forward button 22 and a reverse button 23 are arranged on one side of the rotating operating handle 2, the distal end of the booster tube 4 is riveted to the synchronously rotating double-twisted wire cable 5, a guide head 31 is arranged at the distal end of the synchronously rotating double-twisted wire cable 5, a cell brush 51 is arranged in the middle of the synchronously rotating double-twisted wire cable 5, the outer tube 3 moves back and forth, and the distal cell brush 51 is put into the outer tube.

[0024] The cell brush assembly includes a front handle 1, a rotating operating handle 2, a motor 21, a forward button 22, a reverse button 23, an outer sleeve 3, a guide head 31, a booster tube 4, a synchronously rotating double-twisted wire cable 5 and a cell brush 51.

[0025] The motor 21 can be a micro motor capable of forward or reverse rotation, or a high-frequency vibration motor.

[0026] The outer sleeve 3 has a diameter between 1.8 and 3 mm.

[0027] The cell brush 51 can be selected to be 2mm, 3mm, 4mm, or 5mm to cope with different lesions.

[0028] In the embodiment of the present invention, the choledochoscope 6 is of the prior art, comprising: a choledochoscope main unit, a mirror tube and an objective lens; the choledochoscope main unit is connected to the proximal end of the mirror tube, and the objective lens is installed at the distal end of the mirror tube; the mirror tube is provided with an objective lens channel and an instrument channel, the objective lens is installed at the distal end of the objective lens channel, and the outer sleeve 3 extends from the proximal end of the instrument channel and extends from the distal end of the instrument channel to the field of view of the objective lens.

[0029] Under normal circumstances, the cell brush 51 is retracted in the outer cannula 3, and the outer cannula 3 is combined with the guide head 31. When sampling is needed at the patient's site, the medical staff searches for the lesion through the objective lens of the choledochoscope 6, inserts the outer cannula 3 through the instrument channel of the choledochoscope 6, and when the guide head 31 reaches the front end of the lesion under observation of the objective lens, the medical staff holds the front handle 1 and pushes the rotating operating handle 2 forward. The rotating operating handle 2 drives the booster tube 4 forward, and the booster tube 4 drives the synchronously rotating double-twisted wire cable 5 forward. The synchronously rotating double-twisted wire cable 5 pushes the cell brush 51 out of the outer cannula 3, and the cell brush 51 is stretched open. The forward button 22 on the rotating operating handle 2 is pressed, and the motor 21 rotates forward, and the booster tube 4, the synchronously rotating double-twisted wire cable 5, the cell brush 51 and the guide head 31 rotate forward to sample the lesion. By pressing the reverse button 23 on the rotary operating handle 2, the motor 21 rotates in the opposite direction, and the booster tube 4, the synchronously rotating twisted wire cable 5, the cytology brush 51, and the guide head 31 rotate in the opposite direction, allowing for further sampling of the lesion. Alternatively, a high-frequency vibration motor connected to the rotary operating handle 2 can vibrate back and forth, driving the distal cytology brush to vibrate with a certain amplitude, allowing for deeper and more effective sampling, thereby improving the biopsy positivity rate. Compared to existing biliary endoscopic cytology brushes, the rotatable biliary endoscopic cytology brush can collect more cells at a time, improving the accuracy of subsequent benign and malignant differentiation, and thus guiding the selection of further treatment measures.

[0030] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0031] Finally, it should be pointed out that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the above embodiments, or that some of the technical features may be replaced with equivalents. Such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A synchronously rotatable choledochoscope cytology brush, comprising a front handle (1) and a rotating operating handle (2), characterized in that: The front handle (1) is fixedly connected to the outer sleeve (3), the outer sleeve (3) is slidably connected to the booster tube (4), the booster tube (4) is fixedly connected to the rotating operating handle (2), a motor (21) is arranged inside the rotating operating handle (2), and the rotating operating handle (2) can control the synchronous forward and reverse rotation of the distal cell brush, the distal end of the booster tube (4) is riveted to the synchronous rotating double-twisted wire cable (5), the distal end of the synchronous rotating double-twisted wire cable (5) is provided with a guide head (31), and the middle of the synchronous rotating double-twisted wire cable (5) is provided with a cell brush (51), and the outer sleeve (3) moves forward and backward to receive the distal cell brush (51) into the outer sleeve.

2. The synchronously rotatable choledochoscope cytology brush according to claim 1, characterized in that: The choledochoscope (6) comprises: a choledochoscope main unit, a scope tube and an objective lens, wherein the choledochoscope main unit is connected to the proximal end of the scope tube, and the objective lens is mounted at the distal end of the scope tube; the scope tube is provided with an objective lens channel and an instrument channel, and the objective lens is mounted at the distal end of the objective lens channel; the outer sleeve 3 extends from the proximal end of the instrument channel and extends from the distal end of the instrument channel to within the field of view of the objective lens.

3. The synchronously rotatable choledochoscope cytology brush according to claim 2, characterized in that: The outer diameter of the outer sleeve (3) is between Φ0.8 and Φ2 mm.

4. The synchronously rotatable choledochoscope cytology brush according to claim 3, characterized in that: The cell brush (51) can be selected to have a diameter of 2 mm, 3 mm, 4 mm, or 5 mm to cope with different lesions.

5. The synchronously rotatable choledochoscope cytology brush according to claim 4, characterized in that: The cell brush (51) can be made of a relatively soft or relatively hard material. For special lesions, a cell brush made of a relatively soft material can be used to take samples in a non-invasive or minimally invasive manner.

6. The synchronously rotatable choledochoscope cytology brush according to claim 1, characterized in that: The motor (21) is a micro motor connected to the rotary operating handle (2). The micro motor can be electrically controlled to rotate forward and reverse at a uniform speed, thereby driving the distal cell brush to rotate forward and reverse.

7. The synchronously rotatable choledochoscope cytology brush according to claim 1, characterized in that: The motor (21) is a high-frequency vibration motor connected to the rotary operating handle (2). The high-frequency vibration motor vibrates back and forth, driving the distal cell brush to vibrate with a high-frequency vibration with a certain amplitude.

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