An openable and closable cell sampling brush

Abstract

This invention discloses an openable cell sampling brush, comprising a rod body and movable bristles located at the front of the rod body. A placement cavity is provided at the front of the rod body, within which a pair of rotating arms are symmetrically arranged for rotatability. The front of each rotating arm extends out of the placement cavity and has bristles at its tip. The pair of rotating arms are driven to rotate by an operating rod. The operating rod is arranged along the length of the rod body through an inner cavity, and extends from the rear of the rod body to form an operating block for manual operation. When the manual operation block is pushed down or up along the length of the rod body, the operating rod is activated, thereby driving the pair of rotating arms to rotate and open to the sides or close to the center. This invention uses an openable structure for cell sampling. During entry into the vagina, the bristles on both sides are in a closed state. After reaching the vaginal stump, the bristles can be opened and closed by operation to brush the entire "I"-shaped stump back and forth, achieving a good sampling effect.

Description

Technical Field

[0001] This utility model relates to a medical device, and more particularly to an openable cell sampling brush. Background Technology

[0002] For patients with cervical lesions who have undergone total hysterectomy, regular exfoliative cytology sampling is still necessary to monitor for recurrence. However, since the cervix has been removed, the vaginal stump is shaped like a "I" due to suturing. Most existing cell sampling brushes are conventional rod-shaped structures with bristles longer in the middle than at both ends, collecting exfoliated cells by rotating them through the cervical canal. This type of brush cannot effectively conform to the vaginal stump of patients without a cervical canal after total hysterectomy, especially the exfoliated cells at the two corners of the stump, which are particularly difficult to collect. Therefore, a different cell sampling brush structure is needed to collect exfoliated cells from the "I"-shaped vaginal stump, preventing missed diagnoses of recurrent lesions at the vaginal stump. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an openable cell sampling brush that uses the opening and closing of the structure to sample the vaginal "I"-shaped stump, especially the corners on both sides of the stump, ensuring smooth and sufficient sampling.

[0004] This utility model adopts the following technical solution: an openable cell sampling brush, including a rod body and bristles located at the front of the rod body. A placement cavity is provided at the front of the rod body. A pair of rotating arms are symmetrically arranged rotatably in the placement cavity. The front of the rotating arms extends out of the placement cavity and is provided with bristles at the front end. The pair of rotating arms are driven to rotate by an operating rod. The operating rod is arranged in an inner cavity along the length direction of the rod body, and the operating rod extends out at the rear of the rod body to form an operating block for human hand operation. When the human hand drives the operating block to push down or up along the length direction of the rod body, the operating rod is linked and drives the pair of rotating arms to rotate and open to both sides or close to the middle.

[0005] As an improvement, a pair of rotating shafts are installed inside the cavity, and rotating holes are opened at the rear of a pair of rotating arms. The pair of rotating holes are respectively fitted onto the pair of rotating shafts, so that the pair of rotating arms can rotate and open around the rotating shafts.

[0006] As an improvement, a slanted groove is provided on the rotating arm along the front-to-back direction, and a shaft is provided at the front of the operating lever. The shaft is inserted into the slanted groove. When the operating lever moves back and forth, the shaft moves along the slanted groove and drives a pair of rotating arms to rotate and open.

[0007] As an improvement, the operating lever includes a long lever, a crossbar, and two vertical levers. The crossbar is vertically positioned at the front end of the long lever, and the two ends of the crossbar are respectively connected to the two vertical levers. The front end of the vertical levers is provided with a pin.

[0008] As an improvement, an elongated hole is opened on the rear side of the rod, which connects to the inner cavity, and the operating block extends out from the elongated hole for operation by hand.

[0009] The beneficial effects of this invention are as follows: Cell sampling is performed through an opening and closing structure. During the process of entering the vagina, the bristles on both sides are in a closed state. After reaching the vaginal stump, the bristles can be opened and closed by operation to brush the entire "I"-shaped stump back and forth, achieving a good sampling effect. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Figure 2 This is a perspective view of the structure of the brush bristles when they are closed, according to this utility model.

[0012] Figure 3 This is a perspective view of the structure of the brush bristles of this utility model when they are open.

[0013] Figure 4 This is a schematic diagram of the component structure after the rod body is removed in this utility model.

[0014] In the diagram: 1. Rod body; 11. Arrangement cavity; 12. Inner cavity; 13. Rotating shaft; 14. Elongated hole; 2. Brush bristles; 3. Rotating arm; 31. Rotating hole; 32. Inclined groove; 4. Operating rod; 41. Insert shaft; 42. Long rod; 43. Horizontal bar; 44. Vertical bar; 5. Operating block. Detailed Implementation

[0015] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0016] like Figures 1-4 The image shows a specific embodiment of the opening and closing cell sampling brush of this utility model. This embodiment includes a rod body 1 and bristles 2 located at the front of the rod body 1. A placement cavity 11 is provided at the front of the rod body 1. A pair of rotating arms 3 are symmetrically arranged rotatably within the placement cavity 11. The front of the rotating arms 3 extends out of the placement cavity 11 and has bristles 2 at its front end. The pair of rotating arms 3 are driven to rotate by an operating rod 4. The operating rod 4 is arranged along the length of the rod body 1 in an inner cavity 12, and the operating rod 4 extends out at the rear of the rod body 1 to form an operating block 5 for manual operation. When the manual drives the operating block 5 to push down or up along the length of the rod body 1, the operating rod 4 is linked to drive the pair of rotating arms 3 to rotate and open to the sides or close to the middle.

[0017] In use, the initial state of this invention is that the pair of rotating arms 3 and brush bristles 2 are closed. The physician holds the rear of the rod 1 and inserts the front of the cell sampling brush into the vagina until it reaches the vaginal stump. The opening and closing direction of the pair of rotating arms 3 and brush bristles 2 corresponds to the extension direction of the "I"-shaped stump. Then, the physician's fingers drive the operating block 5 to move up and down, and the operating rod 4 moves back and forth simultaneously, thereby driving the pair of rotating arms 3 to rotate and close in the middle or open to the sides, brushing back and forth multiple times to collect a sufficient amount of cells for subsequent testing. After sampling, the pair of rotating arms 3 and brush bristles 2 are readjusted to the closed state and withdrawn from the vagina. In practice, the rotating arms 3 and brush bristles 2 are set with appropriate thickness to adapt to the "I"-shaped stump, and the brush bristles 2 can smoothly brush the vaginal stump and the two side corners to complete effective cell sampling. The pair of brush bristles 2 can preferably be set with the side lengths longer than the middle length, which is beneficial for brushing cells in the two side corners of the vagina when opening and closing. The rod 1 is set to a suitable length so that after the front part of the rod 1 is inserted into the vagina, the rear part has sufficient length to allow the operating block 5 to be located outside the body. The doctor can drive the operating block 5 when holding the rod 1. The solid structure of the front part of the rod 1 has a rounded shape, which facilitates entry into the vagina and reduces patient discomfort. The size of the cavity 11 is adapted to the activity space requirements of the rotating arm 3 and the operating rod 4. That is, the cavity 11 leaves a suitable space on both sides for the pair of rotating arms 3 to open to both sides and limits the maximum opening limit. The operating rod 4 is limited by the inner wall of the cavity 11 and the inner cavity 12, so that it can move back and forth along the rod 1.

[0018] As an improved specific implementation, a pair of rotating shafts 13 are installed in the arrangement cavity 11, and rotating holes 31 are opened at the rear of the pair of rotating arms 3. The pair of rotating holes 31 are respectively fitted onto the pair of rotating shafts 13, thereby causing the pair of rotating arms 3 to rotate and open around the rotating shafts 13.

[0019] like Figure 2 , 3 As shown, in specific implementation, the rod 1 can be assembled from two parts, with an arrangement cavity 11 and an inner cavity 12 formed between the two parts. The rotating arm 3 and the operating rod 4 are installed in the cavity. A pair of rotating shafts 13 are machined into the inner wall of the rod 1 at the arrangement cavity 11. The pair of rotating shafts 13 are symmetrically arranged. The rear part of the pair of rotating arms 3 is installed at the pair of rotating shafts 13 through the rotating hole 31, so that they can rotate and open. The bristles 2 at the front end are the front part of the rotation radius, so that they can rotate within a large range, thereby fully sampling the vaginal stump.

[0020] As an improved specific implementation, the rotating arm 3 has an inclined groove 32 along the front-back direction, and the front part of the operating rod 4 is provided with a shaft 41, which is inserted into the inclined groove 32. When the operating rod 4 moves back and forth, the shaft 41 moves along the inclined groove 32 and drives a pair of rotating arms 3 to rotate and open.

[0021] like Figure 2 , 3 As shown in Figure 4, during installation, the insertion shaft 41 is inserted into the inclined groove 32, which has a structure with the front end facing outwards and the rear end facing inwards. When the rotating arm 3 closes, the insertion shaft 41 stays at the front end of the inclined groove 32. When the doctor drives the operating block 5 to move backwards, the operating rod 4 moves backwards synchronously. The backward movement of the insertion shaft 41 will abut against the side wall of the inclined groove 32, thereby driving the rotating arm 3 to open outwards. The insertion shaft 41 will then move towards the rear end along the inclined groove 32. When the operation is reversed, the action of the rotating arm 3 closing inwards is completed.

[0022] As an improved specific implementation, the operating lever 4 includes a long lever 42, a cross lever 43 and two vertical levers 44. The cross lever 43 is vertically arranged at the front end of the long lever 42, and the two ends of the cross lever 43 are respectively connected forward to the two vertical levers 44. The front end of the vertical lever 44 is provided with a shaft 41.

[0023] like Figure 2 , 3 As shown in Figure 4, the long rod 42 is housed in the inner cavity 12 and moves back and forth. The horizontal rod 43 and the two vertical rods 44 are located in the arrangement cavity 11 and move back and forth. The arrangement cavity 11 can be provided with a groove structure corresponding to the vertical rods 44 for limiting the vertical rods 44 and moving back and forth. The overall symmetrical structure ensures the stability of the back and forth movement.

[0024] As an improved specific implementation, an elongated hole 14 is opened on the rear side of the rod 1, the elongated hole 14 is connected to the inner cavity 12, and the operating block 5 extends out from the elongated hole 14 for operation by hand.

[0025] like Figure 1 , 2 As shown in Figure 3, the length of the elongated hole 14 is determined according to the range of motion of the operating block 5, thereby ensuring the opening and closing angle of the rotating arm 3. The operating block 5 is installed on the operating rod 4 by passing through the elongated hole 14 on the outside. When the doctor holds the rod 1, he can drive the operating block 5 to move back and forth with his thumb, thereby improving the convenience of the sampling operation.

[0026] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A closing cell sampling brush, comprising a rod (1) and bristles (2) located at the front of the rod (1), characterized in that: The front part of the rod (1) is provided with a cavity (11), and a pair of rotating arms (3) are rotatably and symmetrically arranged in the cavity (11). The front part of the rotating arms (3) extends out of the cavity (11) and is provided with bristles (2) at the front end. The pair of rotating arms (3) are driven to rotate by an operating rod (4). The operating rod (4) is arranged in an inner cavity (12) opened along the length direction of the rod (1), and the operating rod (4) extends out at the rear part of the rod (1) to form an operating block (5) for manual operation. When the manual drives the operating block (5) to push down or up along the length direction of the rod (1), the operating rod (4) is linked and drives the pair of rotating arms (3) to rotate to open to both sides or close to the middle.

2. The openable / closing cell sampling brush according to claim 1, characterized in that: A pair of rotating shafts (13) are installed in the arrangement cavity (11), and a rotating hole (31) is opened at the rear of the pair of rotating arms (3). The pair of rotating holes (31) are respectively fitted onto the pair of rotating shafts (13) so that the pair of rotating arms (3) can rotate and open around the rotating shafts (13).

3. The openable / closing cell sampling brush according to claim 1, characterized in that: The rotating arm (3) has a slanted groove (32) along the front-back direction. The front part of the operating rod (4) is provided with a shaft (41). The shaft (41) is inserted into the slanted groove (32). When the operating rod (4) moves back and forth, the shaft (41) moves along the slanted groove (32) and drives a pair of rotating arms (3) to rotate and open.

4. The openable / closing cell sampling brush according to claim 3, characterized in that: The operating lever (4) includes a long rod (42), a cross rod (43) and two vertical rods (44). The cross rod (43) is vertically arranged at the front end of the long rod (42). The two ends of the cross rod (43) are respectively connected to the two vertical rods (44) forward. The front end of the vertical rod (44) is provided with a shaft (41).

5. A closing cell sampling brush according to any one of claims 1-4, characterized in that: The rod (1) has a long hole (14) on its rear side, which is connected to the inner cavity (12), and the operating block (5) extends out from the long hole (14) for operation by hand.

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