Sampling device for obstetrics and gynecology department

Abstract

The invention relates to the technical field of medical sampling, and discloses a sampling device for gynaecology and obstetrics, which comprises a suction tube, a piston is slidably arranged in the suction tube, the top of the piston is connected with a piston rod, the piston rod penetrates out of the top of the suction tube, a suction handle is fixed at the free end of the piston rod, the bottom of the suction tube is communicated with a suction tube, and a sleeve is sleeved outside the suction tube. The inner wall of the top of the sleeve is slidably connected with the suction cylinder, a vertical sample suction channel is arranged at the bottom of the sleeve, the bottom end of the suction pipe is slidably connected into the sample suction channel, a sample outlet handle is arranged at the top of the sleeve, and cutters are horizontally slidably arranged at the positions, on the two sides of a port of the sample suction channel, of the bottom of the sleeve and connected with a driving assembly. According to the invention, the problem that the sample is easy to pollute and drop in the existing sampling mode of vulva lesions and cervical lesions can be solved.

Description

Technical Field

[0001] This invention relates to the field of medical sampling technology, specifically to a sampling device for obstetrics and gynecology. Background Technology

[0002] Vulvar and cervical lesions are common diseases in women. Determining whether they are benign or malignant is a core prerequisite for developing clinical treatment plans. When unexplained lumps, masses, new growths, or ulcers appear in the vulva and cervix and do not heal for a long time, or when lesions show suspicious features such as irregular shape, blurred borders, abnormal color, or rapid enlargement in a short period of time, it is necessary to clarify the nature of the lesion through sampling and analysis to provide a basis for the formulation of subsequent treatment strategies.

[0003] Currently, the most common clinical sampling method involves the surgeon holding a hemostat or tissue forceps in one hand to hold and fix the lesion tissue, while using a cutting tool in the other hand to remove the tissue. In this process, it is difficult to coordinate both hands, resulting in poor convenience and stability of the sampling operation.

[0004] Meanwhile, after sampling, the sample needs to be transferred to a sample container. During the transfer process, the sample is easily contaminated or dropped. For example, during vulvar sampling, the lesion needs to be fully exposed, and secretions from the surrounding skin and mucous membranes, as well as microorganisms in the environment, are more likely to come into contact with the sample, making it more likely to cause sample contamination. After cervical sampling, the sample needs to be removed from the vagina. During this process, because the vagina is relatively narrow and the field of vision is limited, the sample is more likely to fall out.

[0005] In summary, existing sampling procedures for vulvar and cervical lesions suffer from technical drawbacks such as inconvenience, easy sample contamination, and sample loss. There is an urgent need to develop a sampling device that is easy to operate and provides strong sample protection. Summary of the Invention

[0006] The present invention aims to provide a sampling device for obstetrics and gynecology to solve the problems of easy sample contamination and loss in existing sampling methods for vulvar lesions and cervical lesions.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A sampling device for obstetrics and gynecology includes an aspiration cylinder, a piston slidably disposed inside the aspiration cylinder, a piston rod connected to the top of the piston and extending beyond the top of the aspiration cylinder, an aspiration handle fixed to the free end of the piston rod, an aspiration tube connected to the bottom of the aspiration cylinder, a sleeve outer sleeve, the inner wall of the top of the sleeve slidably connected to the aspiration cylinder, a vertical sampling channel provided at the bottom of the sleeve, the bottom end of the aspiration tube slidably connected within the sampling channel, a sample dispensing handle provided at the top of the sleeve, and cutters horizontally slidably disposed on both sides of the sampling channel port at the bottom of the sleeve, the cutters being connected to a drive assembly.

[0008] Preferably, as an improvement, the drive assembly includes a power wedge rod symmetrically and vertically slidably disposed on both sides of the sleeve, a connecting wedge rod horizontally slidably disposed at the bottom of the sleeve, the bottom end of the power wedge rod and the outer end of the connecting wedge rod being driven by a wedge surface engagement, the inner end of the connecting wedge rod being fixedly connected to the cutter, and a cutting handle being vertically and slidably connected to the outer wall of the sleeve, the cutting handle being connected to the power wedge rod.

[0009] Preferably, as an improvement, a flexible pad is provided on the end face of the bottom end of the suction tube.

[0010] Preferably, as an improvement, the flexible pad is detachably connected to the bottom end of the suction tube.

[0011] Preferably, as an improvement, the sample dispensing handle is a ring-shaped sample dispensing handle.

[0012] Preferably, as an improvement, the cutting handle is a ring-shaped cutting handle.

[0013] Preferably, as an improvement, a flexible sealing ring is provided around the outer periphery of the connection between the connecting wedge and the cutter.

[0014] Preferably, as an improvement, the top and bottom of the sample dispensing handle are provided with anti-slip texture.

[0015] Preferably, as an improvement, the top and bottom of the cutting handle are provided with anti-slip texture.

[0016] Preferably, as an improvement, an observation window is provided on the bottom side wall of the sleeve at the position corresponding to the sampling channel, and the connecting wedge and the power wedge are staggered from the observation window.

[0017] The principles and beneficial effects of this invention are as follows: During sampling, the suction channel is placed over the lesion tissue to be sampled. Pulling the piston creates negative pressure, drawing some tissue from the lesion into the suction channel. Pressing the cutting handle moves the power wedge downward, which in turn drives the connecting wedges on both sides to move inward, thereby moving the two cutters inward and cutting off the lesion tissue at the suction channel opening. The lesion tissue remaining in the suction channel is the collected sample. After cutting, the sleeve is raised by the sample dispensing handle, causing it to move upward along the suction tube, allowing the suction tube to slide down within the suction channel and eject the sample.

[0018] 1. This method involves drawing the lesion tissue into the sampling channel and then cutting it. The sample is located in the sampling channel during and after the sampling process, and is in a closed state (the cutter can be temporarily left in place after cutting to seal the sampling channel opening). On the one hand, compared with the traditional sampling method of complete exposure, it can greatly avoid sample contamination. On the other hand, it can also effectively prevent the sample from falling out during the sample transfer process.

[0019] 2. This design, which features a sliding arrangement of the suction tube and sleeve, offers several beneficial effects: Firstly, to prevent sample jamming within the suction channel, the suction tube can be blown out by the downward pressure of the suction tube. If blowing is insufficient, the sleeve can be pulled upwards along the suction tube, allowing the suction tube to move downwards within the suction channel and smoothly expel the sample, thus resolving the jamming problem. Secondly, during cleaning and disinfection, the suction tube can be extended from the suction channel, facilitating cleaning and disinfection and preventing blockage.

[0020] 3. This solution incorporates a flexible pad at the bottom end of the suction tube. Firstly, the pad's flexibility prevents the sample from impacting the suction tube's end when drawn into the suction channel, thus avoiding sample damage. Secondly, during sample ejection, the flexible pad's movement against the inner wall of the suction channel ensures complete sample removal. Thirdly, after sample removal, the suction tube can be moved again within the suction channel, and the flexible pad's movement against the inner wall of the suction channel facilitates cleaning.

[0021] 4. The flexible pad and the bottom of the suction tube are detachably connected, for example by using Velcro or interference fit, which makes it easy to replace the flexible pad.

[0022] 5. In this solution, cutting and subsequent sample dispensing only require pressing the corresponding handle. In actual use, the operator can hold the suction cylinder with one hand and operate the corresponding handle with the thumb of the same hand. This allows the solution to be operated with one hand when needed, greatly reducing the difficulty of operation and improving the convenience of operation.

[0023] 6. Furthermore, the sample cutting handle adopts a ring-shaped design, which synchronously drives the two power wedges on both sides to move downwards, ultimately ensuring the synchronized movement and shearing force of the two cutters, thus guaranteeing smooth sample cutting. Additionally, this design allows for unrestricted hand placement during one-handed operation; pressing from any position will synchronously drive the two power wedges downwards, making operation more convenient. Similarly, the sample dispensing handle also adopts a ring-shaped design, allowing for unrestricted hand placement during one-handed operation. Whether holding the suction cylinder in any position, the thumb can easily press the sample dispensing handle.

[0024] 7. This solution uses a power wedge and a connecting wedge to drive the cutter to cut samples. The cutter is built into the sleeve, which is safer and more compact than an external cutter design, making it easier for the operator to use.

[0025] 8. A flexible sealing ring is installed at the connection between the connecting wedge and the cutter. This ensures the sealing ring's flexibility doesn't hinder cutter movement and effectively prevents debris from entering the wedge's installation space. Anti-slip textures on the sample dispensing and cutting handles increase friction, preventing slippage and improving operational stability. An observation window is provided on the outer wall of the sleeve for easy observation of whether lesion tissue has been aspirated into the sampling channel. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention.

[0027] Figure 2 This is a longitudinal sectional view of Embodiment 1 of the present invention.

[0028] Figure 3 for Figure 2 A partial structural diagram.

[0029] The reference numerals in the accompanying drawings include: suction handle 1, piston rod 2, suction cylinder 3, sample dispensing handle 4, sample cutting handle 5, sleeve 6, slider 7, groove 8, power wedge 9, connecting wedge 10, cutter 11, suction channel 12, suction tube 13, and piston 14. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the embodiments. Example 1 like Figure 1 and Figure 2 As shown, a sampling device for obstetrics and gynecology includes a suction cylinder 3, a piston 14 slidably connected inside the suction cylinder 3, a piston rod 2 fixedly connected to the top of the piston 14, the piston rod 2 extending outside the top of the suction cylinder 3, a suction handle 1 fixed to the free end of the piston rod 2, and a suction tube 13 connected to the bottom of the suction cylinder 3, the suction tube 13 being integrally formed at the bottom of the suction cylinder 3.

[0031] The suction cylinder 3 is fitted with a sleeve 6. The top inner wall of the sleeve 6 is slidably connected to the suction cylinder 3 (using existing technology, such as a sliding connection method involving a slider and a groove). A vertical suction channel 12 is opened at the bottom of the sleeve 6, and the bottom end of the suction tube 13 is slidably connected within the suction channel 12. A sample dispensing handle 4 is fixed on the top outer wall of the sleeve 6. The sample dispensing handle 4 is annular and can be integrally formed with the top of the sleeve 6.

[0032] Combination Figure 3As shown, cutters 11 are horizontally slidably mounted on both sides of the bottom of the sleeve 6 at the port of the sampling channel 12. The cutters 11 are connected to a drive assembly. The drive assembly includes power wedges 9 symmetrically and vertically slidably mounted on both sides of the sleeve 6. Connecting wedges 10 are horizontally slidably mounted on the bottom of the sleeve 6. The two connecting wedges 10 are located on both sides of the sampling channel 12. The bottom end of the power wedge 9 and the outer end (the end furthest from the sampling channel 12) of the connecting wedge 10 are connected by a wedge surface engagement. The inner ends of the two connecting wedges 10 are fixedly connected to the two cutters 11. A flexible sealing ring is provided around the connection between the connecting wedge 10 and the cutter 11. The outer wall of the sealing ring is fixed to the sliding cavity wall of the connecting wedge 10, and the inner wall of the sealing ring is slidably engaged with the outer wall of the connecting wedge 10. An annular cutting handle 5 is provided on the outer wall of the sleeve 6. Two symmetrical grooves 8 are vertically opened on the outer wall of the sleeve 6. Sliding blocks 7 are slidably connected within the two grooves 8. The cutting handle 5 is connected to the two power wedges 9 through the two sliding blocks 7.

[0033] Working principle: After disinfection and other preliminary preparations, the sampling channel 12 is placed over the lesion to be sampled. Pulling up the suction handle 1 moves the piston 14 upward within the suction cylinder 3, creating a negative pressure within the suction cylinder 3, suction tube 13, and sampling channel 12. This draws a portion of the lesion tissue into the sampling channel 12. Then, pressing down the cutting handle 5 moves the power wedge 9 downward. The power wedge 9, through its wedge-shaped structure at the bottom, drives the connecting wedge 10 at the bottom of the sleeve 6 to move horizontally inward. The movement of the two connecting wedges 10 causes the two connected cutters 11 to move synchronously towards the sampling channel 12, thus cutting off the lesion tissue from the port of the sampling channel 12. The lesion tissue remaining in the sampling channel 12 is the collected sample. After cutting, the entire device is withdrawn from the sampling point. During withdrawal, the cutting handle 5 remains stationary, and the cutters 11 seal the port of the sampling channel 12 to ensure the sample within the sampling channel 12 is sealed and prevents contamination. The device is moved to dock with the sample collection container, the cutting handle 5 is reset, and then the sleeve 6 is moved upward along the suction cylinder 3 by lifting the sample dispensing handle 4. This allows the suction tube 13 to move downward in the suction channel 12, thereby pushing the sample in the suction channel 12 into the sample collection container for collection.

[0034] It should be noted that the lesion tissue volume during the diagnostic stage is usually small, with a diameter of 1-3 cm. The blade of the cutter 11 is initially flush with the exit points on both sides of the aspiration channel 12, not protruding into the aspiration channel 12, thus not affecting the aspiration of the lesion tissue. Therefore, when the cutter 11 is driven to move by the power wedge 9 and connecting wedge 10, the movement distance is small, and the operator does not need to press the cutting handle 5 excessively. This allows the drive assembly of this application to smoothly drive the cutter 11. In practical applications, a cutting marking line can be marked on the sleeve 6 to guide the operator to press the cutting handle 5 to the cutting marking line to complete the cutting, further improving operational convenience. In addition, this solution also supports one-handed operation in practical applications. In one-handed operation, the operator holds the top of the aspiration cylinder 3 with one hand and presses the cutting handle 5 with the thumb of the same hand.

[0035] Example 2 The difference between this embodiment and Embodiment 1 is that a flexible pad is fixed to the bottom end face of the suction tube 13. The flexible pad is made of medical rubber or silicone. This design can protect the aspirated lesion tissue by using the flexible pad to prevent the lesion tissue from impacting the bottom end of the suction tube 13; it can also allow the sample to be smoothly pushed out of the suction channel 12 by moving the flexible pad against the inner wall of the suction channel 12 during subsequent sample dispensing. After the sample dispensing is completed, the sample dispensing action can be performed again by moving the flexible pad against the inner wall of the suction channel 12 to clean the suction channel 12.

[0036] Example 3 The difference between this embodiment and embodiment 2 is that the flexible pad and the bottom end of the suction tube 13 are detachably connected. The detachable connection can be achieved using existing technologies, such as Velcro or interference fit. This arrangement makes it convenient to replace the flexible pad.

[0037] Example 4 The difference between this embodiment and embodiment 3 is that the top and bottom of the sample dispensing handle 4 are machined with anti-slip textures, and the top and bottom of the sample cutting handle 5 are also machined with anti-slip textures. This design facilitates increased friction, prevents slippage during operation, and improves operational stability.

[0038] Example 5 The difference between this embodiment and embodiment 4 is that a transparent observation window is installed on the bottom side wall of the sleeve 6 at the position corresponding to the sampling channel 12. The connecting wedge rod 10 and the power wedge rod 9 are offset from the observation window. This arrangement facilitates observation of whether lesion tissue is aspirated into the sampling channel 12, or whether the lesion tissue is successfully and completely pushed out of the sampling channel 12.

[0039] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A sampling device for obstetrics and gynecology, characterized in that: The device includes a suction cylinder, a piston that slides inside the suction cylinder, a piston rod connected to the top of the piston that extends beyond the top of the suction cylinder, a suction handle fixed to the free end of the piston rod, a suction tube connected to the bottom of the suction cylinder, a sleeve fitted over the suction cylinder, the inner wall of the top of the sleeve slidingly connected to the suction cylinder, a vertical suction channel at the bottom of the sleeve, the bottom end of the suction tube slidingly connected to the suction channel, a sample dispensing handle at the top of the sleeve, and cutters that slide horizontally on both sides of the suction channel port at the bottom of the sleeve, with the cutters connected to a drive assembly.

2. The sampling device for obstetrics and gynecology according to claim 1, characterized in that: The drive assembly includes a power wedge rod symmetrically and vertically slidably disposed on both sides of the sleeve, a connecting wedge rod horizontally slidably disposed at the bottom of the sleeve, the bottom end of the power wedge rod and the outer end of the connecting wedge rod are driven by a wedge surface engagement, the inner end of the connecting wedge rod is fixedly connected to the cutter, and a cutting handle is vertically and slidably connected to the outer wall of the sleeve, the cutting handle being connected to the power wedge rod.

3. A sampling device for obstetrics and gynecology according to claim 2, characterized in that: A flexible pad is provided on the end face of the bottom of the suction tube.

4. A sampling device for obstetrics and gynecology according to claim 3, characterized in that: The flexible pad is detachably connected to the bottom of the suction tube.

5. A sampling device for obstetrics and gynecology according to claim 4, characterized in that: The sample dispensing handle is a ring-shaped handle.

6. A sampling device for obstetrics and gynecology according to claim 5, characterized in that: The sample cutting handle is a ring-shaped sample cutting handle.

7. A sampling device for obstetrics and gynecology according to claim 6, characterized in that: A flexible sealing ring is provided around the outer periphery of the connection between the connecting wedge and the cutter.

8. A sampling device for obstetrics and gynecology according to claim 7, characterized in that: The top and bottom of the sample dispensing handle are textured with anti-slip patterns.

9. A sampling device for obstetrics and gynecology according to claim 8, characterized in that: The top and bottom of the cutting handle are equipped with anti-slip textures.

10. A sampling device for obstetrics and gynecology according to claim 9, characterized in that: An observation window is provided on the bottom side wall of the sleeve at the position corresponding to the sample suction channel, and the connecting wedge and the power wedge are staggered from the observation window.

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