Cytology brush
By designing a bendable cell brush and using a pull rope to drive the guide wire to bend elastically, the problems of inadequate sampling and low accuracy in the prior art are solved, and more efficient lesion sampling is achieved.
Patent Information
- Application Number
- CN202420954341.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-04-30
AI Technical Summary
When sampling the bending position, existing cell brushes are not in place, have low accuracy, and are difficult to reach the lesion site at the bronchial tip angle.
A cell brush including an outer casing, a guide wire, a handle, a brush head and a drawstring are designed. The brush head can move along the length of the outer casing, and the guide wire is elastically bent by pulling the drawstring to achieve bending sampling.
Through bending sampling, the cell brush can better reach the lesion position and improve the accuracy and efficiency of sampling.
Smart Images
Figure CN223009168U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a medical instrument, in particular to a cytobrush. Background Art
[0002] When performing bronchoscopy, a cytobrush is needed to sample the lesion. Currently, the brush head of the cytobrush generally can only move in a straight line direction and cannot reach the tip angle of the bronchus at the end, making it difficult to brush the lesion site. Therefore, the current cytobrush has problems of incomplete sampling and low accuracy when sampling at a curved position. Summary of the Utility Model
[0003] The purpose of the utility model is to provide a cytobrush to solve one or more technical problems existing in the prior art, and at least provide a beneficial choice or create conditions.
[0004] The solution of the utility model to solve its technical problems is as follows:
[0005] A cytobrush includes: an outer sleeve; a guide wire, one end of which is connected to a handle and the other end is connected to a brush head, and the brush head can extend into the outer sleeve from one end of the outer sleeve and protrude from the other end of the outer sleeve; a pull rope, one end of which passes through the outer sleeve and is connected to the brush head.
[0006] This technical solution has at least the following beneficial effects: During use, the outer sleeve is placed into the patient's body, and the brush head enters the outer sleeve from one end of the outer sleeve. By pushing the guide wire or the handle, the brush head can be extended from the other end of the outer sleeve, and the brush head can be used to sample the lesion site. When the brush head cannot reach the lesion position even when moving along the length direction of the outer sleeve, the pull rope is pulled, and the part of the guide wire close to the brush head and extending out of the outer sleeve is elastically bent by driving the guide wire through the pull rope, so as to reach the lesion position and sample. After sampling, the pulling force on the pull rope is removed, and the brush head can be reset after the guide wire elastically returns. In this way, the brush head on the cytobrush can achieve curved sampling, better reach the lesion position, and improve the accuracy and efficiency of sampling.
[0007] As a further improvement of the above technical solution, a hollow channel is provided in the handle, and the other end of the pull rope passes through the hollow channel and is connected to a pull ring. When it is necessary to pull the pull rope, the force can be applied to the pull ring, and the force can be applied more conveniently through the pull ring, effectively avoiding the situation of slipping when directly pulling the pull rope.
[0008] As a further improvement of the above technical solution, a catheter is connected to the side of the pull ring close to the handle, the pull rope is connected to the catheter, and the catheter is inserted into the hollow channel. When a force is applied to the pull ring, the cooperation between the catheter and the hollow channel can be used to limit the force application direction, so as to more accurately and stably pull the pull rope to deflect the brush head, which is beneficial to improving the operation efficiency.
[0009] As a further improvement of the above technical solution, a limiting ring is connected to the outside of the catheter by a thread, and one end of the limiting ring abuts against the handle. After the pulling ring is pulled in a direction away from the handle and the position adjustment of the pulling ring is completed, the limiting ring is rotated so that one end of the limiting ring abuts against the handle. At this time, the reset of the pulling ring can be restricted, which is beneficial to stably maintain the deflected state of the brush head and improve the operation convenience.
[0010] As a further improvement of the above technical solution, scale values are arranged on the outside of the catheter along its length direction. When the pulling ring is pulled in a direction away from the handle, the catheter is gradually drawn out from the hollow channel. At this time, the movement amount of the pulling rope or the deflection amount of the brush head can be conveniently known by observing the scale values on the catheter, further improving the operation efficiency.
[0011] As a further improvement of the above technical solution, the handle includes a hollow rod and limiting rings connected to both sides of the hollow rod. The hollow channel is formed in the hollow rod, and the guide wire is connected to one end of the hollow rod. During operation, the user can pass two fingers through the two limiting rings respectively, and the center of the guide wire passes through the hollow channel in the hollow rod to connect the pulling ring, so that the handle can be stably held.
[0012] As a further improvement of the above technical solution, the utility model further includes a conversion joint. One end of the conversion joint is a connection end, and the other end of the conversion joint is an injection end. The connection end is detachably connected to one end of the outer sleeve close to the handle. When it is necessary to use the brush head for sampling, the conversion joint and the outer sleeve are in a separated state. When it is necessary to inject medicine into the lesion site, the brush head can be directly pulled out of the outer sleeve, and then the connection head is connected to the end of the outer sleeve. At this time, the injection tube can be directly connected to the injection end, and the medicine can be directly injected inward through the outer sleeve, so that it is not necessary to take out or insert the outer sleeve during the medicine injection and sampling operations, improving the medical operation efficiency and thus improving the medical safety.
[0013] As a further improvement of the above technical solution, a connection belt is connected between the outside of the conversion joint and the outside of the outer sleeve. After the conversion joint is removed, the conversion joint and the outer sleeve are still connected to each other by the connection belt, which is convenient for placing and storing the conversion joint.
[0014] As a further improvement of the above technical solution, the outer side of the connection end is sleeved with a first sealing ring, and the inner side of the injection end is sleeved with a second sealing ring. When the connection end is connected to the end of the outer sleeve, the outer side of the first sealing ring abuts against the inner side of the outer sleeve, which can improve the connection sealing between the conversion joint and the outer sleeve. When the injection tube is connected to the injection end, the inner side of the second sealing ring abuts against the outer side of the end of the injection barrel, which can improve the connection sealing between the conversion joint and the injection barrel, thereby effectively reducing the phenomenon of infusion leakage.
[0015] As a further improvement of the above technical solution, the outer end of the outer tube close to the handle is provided with anti-skid patterns. When the outer tube needs to be held, the outer tube can be focused on the part with the anti-skid patterns, thereby effectively reducing the problem of slipping during infusion. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following is a brief description of the drawings required for the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present utility model, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.
[0017] Figure 1 It is a structural schematic diagram of the utility model when the brush head is extended along the length direction of the outer sleeve.
[0018] Figure 2 It is a schematic diagram of the structure of the brush head of the utility model when turning.
[0019] Figure 3 It is a schematic diagram of the structure of the utility model after the guide wire is separated from the outer sleeve.
[0020] In the attached drawings: 100 - outer sleeve, 110 - anti-slip pattern, 210 - guide wire, 220 - handle, 230 - brush head, 310 - pull rope, 320 - pull ring, 321 - catheter, 322 - limiting ring, 330 - conversion joint, 331 - connecting belt. DETAILED DESCRIPTION
[0021] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0022] In the description of the present utility model, it should be understood that with regard to the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.
[0023] In the description of the present utility model, the meaning of several is one or more, the meaning of multiple is two or more. Understanding greater than, less than, exceeding, etc. does not include the present number, and understanding above, below, within, etc. includes the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.
[0024] In the description of the present utility model, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above words in the present utility model in combination with the specific content of the technical solution.
[0025] Referring to Figure 1 and Figure 2 , a cell brush includes an outer sleeve 100, a guide wire 210 and a pull cord 310. Among them, one end of the guide wire 210 is connected with a handle 220, the other end of the guide wire 210 is connected with a brush head 230. The brush head 230 can extend into the outer sleeve 100 from one end of the outer sleeve 100 and protrude from the other end of the outer sleeve 100. One end of the pull cord 310 passes through the outer sleeve 100 and is connected to the brush head 230.
[0026] As can be seen from the above, during use, the outer sleeve 100 is placed into the patient's body, the brush head 230 enters the outer sleeve 100 from one end of the outer sleeve 100. By pushing the guide wire 210 or the handle 220, the brush head 230 can be extended from the other end of the outer sleeve 100. The brush head 230 can be used to sample the lesion site. When the brush head 230 cannot reach the lesion position even when moving along the length direction of the outer sleeve 100, the pull cord 310 is pulled. The pull cord 310 drives the guide wire 210 to approach the brush head 230 and the part extending out of the outer sleeve 100 undergoes elastic bending, so as to reach the lesion position and sample. After sampling, the pulling force on the pull cord 310 is removed, and after the guide wire 210 elastically restores, it can drive the brush head 230 to reset. In this way, the brush head 230 on the cell brush can achieve bending sampling, better reach the lesion position, and improve the accuracy and efficiency of sampling.
[0027] One end of the pull cord 310 is connected to the brush head 230, and the other end extends out of the end of the outer sleeve 100 away from the brush head 230. When it is necessary to rotate the brush head 230, a force can be directly applied to the pull cord 310 to make the brush head 230 rotate. In order to facilitate pulling the pull cord 310, in this embodiment, a hollow channel is provided in the handle 220, and the other end of the pull cord 310 passes through the hollow channel and is connected to a pull ring 320. When it is necessary to pull the pull cord 310, a force can be applied to the pull ring 320, and the force can be applied more conveniently through the pull ring 320, effectively avoiding the situation of slipping when directly pulling the pull cord 310.
[0028] In the above embodiment, if the pull ring 320 is directly pulled, it is easy to deviate from the length direction of the hollow channel when applying force, and at this time, it is easy to affect the stability of applying force to the pull ring 320. In order to further improve the operation efficiency, in this embodiment, a conduit 321 is connected to the side of the pull ring 320 close to the handle 220, the pull cord 310 is connected to the conduit 321, and the conduit 321 is inserted into the hollow channel. When a force is applied to the pull ring 320, the cooperation between the conduit 321 and the hollow channel can be used to limit the force application direction, so as to more accurately and stably pull the pull cord 310 to deflect the brush head 230, which is beneficial to improving the operation efficiency.
[0029] If the pull ring 320 is pulled out in the direction away from the handle 220 and it is necessary to continue to maintain the deflected position of the brush head 230, a continuous force can be directly applied. In order to facilitate the operation, in this embodiment, a limit ring 322 is connected to the outside of the conduit 321 by a thread, and one end of the limit ring 322 abuts against the handle 220. After the pull ring 320 is pulled in the direction away from the handle 220 and the position of the pull ring 320 is adjusted, the limit ring 322 is rotated so that one end of the limit ring 322 abuts against the handle 220. At this time, the reset of the pull ring 320 can be restricted, which is beneficial to stably maintaining the deflected state of the brush head 230 and improving the convenience of the operation. In practical applications, only a small section of the thread on the conduit 321 is required, so that the efficiency of the limit ring 322 moving along the direction of the conduit 321 can be improved.
[0030] To facilitate knowing the rotation angle of the brush head 230, scale values are provided along the length direction on the outer side of the catheter 321. When the pull ring 320 is pulled away from the handle 220, the catheter 321 is gradually withdrawn from the hollow channel. At this time, by observing the scale values on the catheter 321, it is convenient to know the movement amount of the pull cord 310 or the deflection amount of the brush head 230, further improving the operation efficiency. In practical applications, the scale values on the catheter 321 can be in length units, and at this time, the displacement amount of the catheter 321 is directly recorded. The scale values can also be in angle units. After the catheter 321 is pulled out by a certain displacement, the brush head 230 will also deflect by a certain angle. At this time, the rotation angle of the brush head 230 can be approximately indicated by the angle units.
[0031] As a further embodiment of the structure of the handle 220, the handle 220 includes a hollow rod and limit rings 322 connected to both sides of the hollow rod. The hollow channel is formed inside the hollow rod, and the guide wire 210 is connected to one end of the hollow rod. During operation, the user can pass two fingers through the two limit rings 322 respectively, and the center of the guide wire 210 passes through the hollow channel inside the hollow rod to connect to the pull ring 320, so that the handle 220 can be stably held.
[0032] In a medical operation, after cell sampling is completed, the outer catheter 100 still needs to be withdrawn, and then a medicine spraying tube is inserted, and then medicine is injected into the patient's body through a syringe. In order to improve the operation convenience, as Figure 3 shown, the present invention further includes a conversion joint 330. One end of the conversion joint 330 is a connection end, and the other end of the conversion joint 330 is an injection end. The connection end is detachably connected to the end of the outer catheter 100 close to the handle 220. For example, the connection end can be directly press-fitted to the end of the outer catheter 100, or can be connected to the end of the outer catheter 100 through a buckle. When it is necessary to use the brush head 230 for sampling, the conversion joint 330 and the outer catheter 100 are in a separated state. When it is necessary to inject medicine into the lesion site, the brush head 230 can be directly withdrawn from the outer catheter 100, and then the connection head is connected to the end of the outer catheter 100. At this time, the injection tube can be directly connected to the injection end, and medicine is directly injected inward through the outer catheter 100. In this way, it is not necessary to take out or insert the outer catheter 100 during the medicine injection and sampling operations, improving the medical operation efficiency and thus improving the medical safety.
[0033] After the conversion joint 330 is removed, if it is directly placed alone, it is easy to be lost. Therefore, in this embodiment, a connection belt 331 is connected between the outer side of the conversion joint 330 and the outer side of the outer catheter 100. After the conversion joint 330 is removed, the conversion joint 330 and the outer catheter 100 are still connected to each other through the connection belt 331, which can facilitate the placement and storage of the conversion joint 330.
[0034] In order to improve the sealing performance of the conversion joint 330, in this embodiment, the outer side of the connection end is sleeved with a first sealing ring, and the inner side of the injection end is sleeved with a second sealing ring. When the connection end is connected to the end of the outer sleeve 100, the outer side of the first sealing ring abuts against the inner side of the outer sleeve 100, which can improve the sealing performance of the connection between the conversion joint 330 and the outer sleeve 100. When the injection tube is connected to the injection end, the inner side of the second sealing ring abuts against the outer side of the end of the injection tube, which can improve the sealing performance of the connection between the conversion joint 330 and the injection tube, so as to effectively reduce the leakage of the infusion.
[0035] In order to facilitate the positioning of the outer tube 100, in this embodiment, the outer end of the outer tube 100 close to the handle 220 is provided with an anti-slip pattern 110. When the outer tube 100 needs to be held, the outer portion of the outer tube 100 with the anti-slip pattern 110 can be applied, thereby effectively reducing the problem of slipping during infusion.
[0036] The preferred implementation modes of the present invention are specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.
Claims
1. A cell brush, characterized in that: include: An outer sleeve (100); A guide wire (210), one end of which is connected to a handle (220), and the other end of which is connected to a brush head (230), wherein the brush head (230) can extend from one end of the outer sleeve (100) into the outer sleeve (100) and protrude from the other end of the outer sleeve (100); A pull rope (310) has one end passing through the outer sleeve (100) and connected to the brush head (230); a hollow channel is provided in the handle (220); the other end of the pull rope (310) passes through the hollow channel and is connected to a pull ring (320); a side of the pull ring (320) close to the handle (220) is connected to a catheter (321); the pull rope (310) is connected to the catheter (321), and the catheter (321) is inserted into the hollow channel.
2. A cell brush according to claim 1, characterized in that: The outer side of the conduit (321) is connected to a limiting ring (322) via a thread, and one end of the limiting ring (322) abuts against the handle (220).
3. A cell brush according to claim 1, characterized in that: The outer side of the conduit (321) is provided with scale values along its length direction.
4. A cell brush according to claim 1, characterized in that: The handle (220) comprises a hollow rod and limiting rings (322) connected to both sides of the hollow rod. The hollow channel is formed in the hollow rod, and the guide wire (210) is connected to one end of the hollow rod.
5. A cell brush according to claim 1, characterized in that: It also includes a conversion joint (330), one end of which is a connection end, and the other end of which is an injection end, and the connection end is detachably connected to one end of the outer sleeve (100) close to the handle (220).
6. A cell brush according to claim 5, characterized in that: A connecting belt (331) is connected between the outer side of the conversion joint (330) and the outer side of the outer sleeve (100).
7. A cell brush according to claim 5, characterized in that: The outer side of the connecting end is sleeved with a first sealing ring, and the inner side of the injection end is sleeved with a second sealing ring.
8. A cell brush according to claim 1, characterized in that: An anti-slip pattern (110) is provided on the outer side of the end of the outer sleeve (100) close to the handle (220).