Detection pen for carrying acetic acid reagent

Abstract

The invention discloses a detection pen for carrying an acetic acid reagent, and belongs to the technical field of medical equipment, the detection pen comprises a liquid containing tube, a liquid outlet tube, a smearing device, a spring device and a sealing cover, the liquid containing tube extends into the spring device and is in sliding connection with the spring device, the liquid outlet tube penetrates through the liquid containing tube and the spring device, and the liquid outlet tube is fixedly connected with the spring device; the smearing device is clamped and hermetically mounted at the extending end of the liquid outlet pipe and is communicated with a pipeline of the liquid outlet pipe; a sealing part is arranged at one end of the liquid containing pipe, a limiting part is arranged at one end of the liquid outlet pipe, and the limiting part is matched with the sealing part to limit the liquid outlet pipe; a long-strip-shaped liquid outlet hole is formed in the position, on one side of the limiting part, of the liquid outlet pipe, the liquid outlet pipe is slidably connected with the sealing part, and the sealing cover is installed at the other end of the liquid containing pipe. The device is convenient to carry and simple to operate, and can control the liquid outlet amount of acetic acid during detection.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, and in particular relates to a testing pen for carrying acetic acid reagent. Background Technology

[0002] Genital warts are a common sexually transmitted disease caused by human papillomavirus (HPV) infection, resulting in benign growths on the skin and mucous membranes. Transmission primarily occurs through sexual contact, but in some cases, it can be indirectly transmitted through everyday items such as underwear, towels, and bath tubs. Clinically, some patients with genital warts present with atypical lesions, latent infection, or subclinical manifestations that cannot be visually identified. An acetic acid test is often used for auxiliary differentiation. The acetic acid test, using 5% glacial acetic acid solution, works by recognizing the difference between the keratin produced by HPV-infected epithelial cells and that produced by normal, uninfected epithelial cells. The acetic acid test causes the keratin produced by HPV-infected epithelial cells to coagulate, decolorize, and turn white. The test is simple, safe, and highly sensitive. After applying 5% glacial acetic acid solution evenly around the lesion with a cotton swab for 5 minutes, a uniform, clearly defined white change appears at the observation site, accurately indicating the extent of the warts. This test is helpful in diagnosing clinically visible but suspicious lesions and subclinical infections that are not visible in the surrounding area. This test can detect subclinical infection areas as early as possible, playing an extremely important role in the diagnosis and differential diagnosis of some atypical or subclinical human papillomavirus infections. It is an important auxiliary means for diagnosing condyloma acuminata and provides good guidance for the early detection and early intervention treatment of subclinical infection areas.

[0003] Chinese patent (CN212879375U) discloses a swab for an acetic acid whitening test. When in use, pulling the piston rod separates the tube plug from the end of the cotton swab, allowing glacial acetic acid solution to flow into the hollow cotton swab and saturate the cotton tip. However, in this technical solution, the amount of acetic acid reagent flowing out cannot be controlled after pulling the piston rod; furthermore, depending on the area being applied, the acetic acid needs to stop flowing briefly. This patented technology requires frequent pushing of the piston rod with both hands during use, making it very inconvenient. Summary of the Invention

[0004] In view of this, the present invention provides a detection pen for carrying acetic acid reagent to solve the above problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A testing pen for carrying acetic acid reagent includes: a liquid-holding tube, a dispensing tube, an applicator, a spring device, and a sealing cap. The liquid-holding tube extends into and is slidably connected to the spring device. The dispensing tube passes through the liquid-holding tube and the spring device and is fixedly connected to the spring device. The applicator is snap-fitted and sealed at the extended end of the dispensing tube and communicates with the dispensing tube. One end of the liquid-holding tube has a sealing portion, and one end of the dispensing tube has a limiting portion. The limiting portion cooperates with the sealing portion to limit the dispensing tube. The dispensing tube has an elongated dispensing hole on one side of the limiting portion and is slidably connected to the sealing portion. The sealing cap is installed at the other end of the liquid-holding tube.

[0007] Furthermore, the spring device includes a spring housing and a spring, the liquid-holding tube extends into the spring housing and is slidably connected to the liquid-holding tube, the spring is disposed between the spring housing and the liquid-holding tube, and the liquid-discharging tube passes through the spring and the spring housing and is fixedly connected to the spring housing.

[0008] Furthermore, a pair of sliding protrusions are provided on the inner wall of the spring housing at the end away from the application device, and an L-shaped groove is provided on the outer wall of the liquid-holding tube. The sliding protrusions slide in the L-shaped groove to limit the position of the liquid-holding tube.

[0009] Furthermore, the application device includes a ball bearing and an application tip. The ball bearing rolls at the output end of the application tip. The application tip is snapped and sealed to the liquid outlet tube and is connected to the liquid outlet tube.

[0010] Furthermore, a first vent hole is provided at the end of the liquid-holding tube away from the application device. The sealing cap is rotatably connected to the liquid-holding tube, and an elongated vent hole is provided on the sealing cap. When the first vent hole and the elongated vent hole are aligned, they are used to balance the liquid-holding tube with atmospheric pressure.

[0011] Furthermore, the spring housing is provided with an extension, and a retaining ring is provided at the end of the extension away from the application device. The retaining ring is provided with a groove, and the sealing cover is provided with a protrusion. The protrusion is inserted into the groove to restrict the relative rotation of the sealing cover and the retaining ring.

[0012] The beneficial effects of this invention are as follows:

[0013] When using this invention, hold the liquid-holding tube, align the application device with the application area, and press down on the liquid-holding tube. The compression spring device of the liquid-holding tube causes the elongated liquid outlet on the liquid-holding tube to gradually leak out of the sealing part. The greater the downward pressure, the longer the elongated liquid outlet leaks out of the sealing part, and the greater the liquid output of the application device, and vice versa. When changing the application area and needing to temporarily stop the liquid output, simply hold the liquid-holding tube away from the skin, and the spring device will push the liquid-holding tube upward, causing the elongated liquid outlet to return to the sealing part, and the application device will stop dispensing liquid. This invention can control the amount of liquid output and can also stop the liquid output at any time. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0015] Figure 1 This is an axonometric view of the present invention.

[0016] Figure 2 This is a front view of the present invention.

[0017] Figure 3 yes Figure 2 Sectional view of AA.

[0018] Figure 4 yes Figure 2 A front view rotated 90° around the central axis.

[0019] Figure 5 yes Figure 4 A cross-sectional view of BB.

[0020] Figure 6 This is a structural view of the spring housing.

[0021] Figure 7 This is a structural view of the liquid outlet pipe.

[0022] Figure 8 This is a structural view of the liquid-containing tube.

[0023] Figure 9 This is a structural view of the closed cover.

[0024] In the figure:

[0025] 10-Liquid collection tube, 11-Sealing part, 12-L-shaped groove, 13-First vent hole, 20-Liquid outlet tube, 21-Limiting part, 22-Elongated liquid outlet hole, 31-Ball bearing, 32-Applying pen tip, 41-Spring housing, 411-Sliding protrusion, 42-Spring, 43-Extension, 44-Fixing ring, 441-Groove, 50-Sealing cap, 51-Elongated vent hole, 52-Protrusion. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] See attached document Figure 1-9 As shown, the present invention provides a test pen for carrying acetic acid reagent, comprising: a liquid holding tube 10, a liquid dispensing tube 20, an application device, a spring device, and a sealing cap 50. The liquid holding tube 10 extends into the spring device and is slidably connected to the spring device. The liquid dispensing tube 20 passes through the liquid holding tube 10 and the spring device and is fixedly connected to the spring device. The application device is snap-fitted and sealed at the protruding end of the liquid dispensing tube 20 and is in pipeline communication with the liquid dispensing tube 20. One end of the liquid holding tube 10 is provided with a sealing part 11, and one end of the liquid dispensing tube 20 is provided with a limiting part 21. The limiting part 21 cooperates with the sealing part 11 to limit the liquid dispensing tube 20. The liquid dispensing tube 20 is provided with an elongated liquid dispensing hole 22 on one side of the limiting part 21. The liquid dispensing tube 20 is slidably connected to the sealing part 11, and the sealing cap 50 is installed at the other end of the liquid holding tube 10.

[0028] When using, hold the liquid collection tube 10, align the application device with the application area, and press down on the liquid collection tube 10. The liquid collection tube 10 compresses the spring device, causing the elongated liquid outlet 22 on the liquid collection tube 10 to gradually leak out of the sealing part 11. The greater the downward pressure, the longer the elongated liquid outlet 22 leaks out of the sealing part 11, and the greater the liquid output of the application device, and vice versa. When changing the application area and needing to temporarily stop the liquid output, simply hold the liquid collection tube 10 away from the skin, and the spring device will push the liquid collection tube 10 upward, causing the elongated liquid outlet 22 to return to the sealing part 11, and the application device will stop dispensing liquid.

[0029] Preferably, the spring device includes a spring housing 41 and a spring 42. The liquid-holding tube 10 extends into the spring housing 41 and is slidably connected to it. The spring 42 is disposed between the spring housing 41 and the liquid-holding tube 10. The liquid-dispensing tube 20 passes through the spring 42 and the spring housing 41 and is fixedly connected to the spring housing 41. When the liquid-holding tube 10 is held down and the spring 42 is compressed, since the liquid-dispensing tube 20 and the spring housing 41 are fixedly connected, as the liquid-holding tube 10 moves downward, the longer the elongated liquid outlet 22 on the liquid outlet 20 protrudes from the sealing part 11, the greater the liquid output of the applicator, and vice versa. When the application range is changed and it is necessary to temporarily stop the liquid output, simply hold the liquid-holding tube 10 away from the skin, and the spring 42 pushes the liquid-holding tube 10 upward, causing the elongated liquid outlet 22 to return to the sealing part 11, and the applicator stops dispensing liquid.

[0030] Preferably, a pair of sliding protrusions 411 are provided on the inner wall of the end of the spring housing 41 away from the application device, and an L-shaped groove 12 is provided on the outer wall of the liquid-holding tube 10. The sliding protrusions 411 slide in the L-shaped groove 12 to limit the liquid-holding tube 10. Before use, the sliding protrusions 411 are on the short side of the L-shaped groove 12. Since the short side of the L-shaped groove 12 surrounds the liquid-holding tube 10, the sliding protrusions 411 in the short side can prevent the liquid-holding tube 10 from compressing the spring 42 downward when not in use, thus preventing the application device from dispensing liquid. When using this device to apply acetic acid to the skin, the liquid-holding tube 10 is rotated, and the liquid-holding tube 10 and the spring housing 41 rotate relative to each other, causing the sliding protrusions 411 to move to the bottom end of the long side of the L-shaped groove 12. At this time, the liquid-holding tube 10 can be held and moved downward to dispense liquid normally. After use, the liquid-holding tube 10 is rotated again to allow the sliding protrusions 411 to enter the short side of the L-shaped groove 12.

[0031] Preferably, the application device includes a ball bearing 31 and an application pen head 32. The ball bearing 31 rolls at the output end of the application pen head 32. The application pen head 32 is snapped and sealed to the liquid outlet tube 20 and is connected to the liquid outlet tube 20. The ball bearing 31 rolls on the patient's skin, and acetic acid enters the application pen head 32 from the liquid outlet tube 20 and is evenly applied to the skin by the ball bearing 31.

[0032] Preferably, the end of the liquid-holding tube 10 furthest from the application device is provided with a first vent hole 13. The sealing cap 50 is rotatably connected to the liquid-holding tube 10. The sealing cap 50 is provided with an elongated vent hole 51. The first vent hole 13 is aligned with the elongated vent hole 51, so that the liquid-holding tube 10 is kept at the same pressure as the atmosphere. This allows the acetic acid in the liquid-holding tube 10 to be applied to the skin by the application device under the action of gravity. As the liquid-holding tube 10 moves downward, the first vent hole 13 moves along the length of the elongated vent hole 51, so that the liquid-holding tube 10 is always kept at the same pressure as the atmosphere.

[0033] Preferably, the spring housing 41 is provided with an extension 43, and a fixing ring 44 is provided at the end of the extension 43 away from the application device. The fixing ring 44 is provided with a groove 441, and the sealing cap 50 is provided with a protrusion 52. The protrusion 52 is inserted into the groove 441 to restrict the relative rotation of the sealing cap 50 and the fixing ring 44. When the liquid-holding tube 10 is held and rotated, the liquid-holding tube 10 and the spring housing 41 rotate relative to each other, while the sealing cap does not rotate. When the sliding protrusion 411 enters from the short side of the L-shaped groove 12 to the bottom of the long side of the L-shaped groove 12, the first vent 13 is aligned with the strip-shaped vent, so that the liquid-holding tube 10 is kept in the same pressure as the atmosphere.

[0034] Example

[0035] Before use, the sliding protrusion 411 is positioned on the short side of the L-shaped groove 12. This position prevents the liquid-holding tube 10 from compressing the spring 42 downwards when not in use, thus preventing liquid from being dispensed from the application device. When applying acetic acid to the skin, rotating the liquid-holding tube 10 causes relative rotation between the tube and the spring housing 41. Due to the restriction of the protrusion 52 and the groove 441, the sealing cap does not rotate. When the sliding protrusion 411 moves from the short side of the L-shaped groove 12 to the bottom of the long side, the first vent 13 aligns perfectly with the strip-shaped vent, ensuring the liquid-holding tube 10 maintains atmospheric pressure. Holding the liquid-holding tube 10 downwards and compressing the spring 42 prevents liquid from being dispensed from the application device due to the pressure difference between the liquid-holding tube 20 and the spring. The outer casing 41 is fixedly connected. As the liquid-holding tube 10 moves downward, the first vent 13 moves along the length of the elongated vent 51, ensuring that the liquid-holding tube 10 maintains the same atmospheric pressure. The longer the elongated outlet hole 22 on the outlet tube 20 protrudes from the sealing part 11, the greater the liquid output of the application device, and vice versa. When changing the application area and needing to temporarily stop the liquid output, simply hold the liquid-holding tube 10 away from the skin, and the spring 42 will push the liquid-holding tube 10 upward, causing the elongated outlet hole 22 to return to the sealing part 11, thus stopping the liquid output of the application device. After use, rotate the liquid-holding tube 10 again, causing the sliding protrusion 411 to enter the short side of the L-shaped groove 12, preventing acetic acid from flowing out of the application device. This invention can control the amount of liquid output and stop the liquid output at any time.

[0036] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A testing pen for carrying acetic acid reagent, characterized in that, include: The device comprises a liquid-collecting tube, a liquid-discharging tube, an applicator, a spring device, and a sealing cap. The liquid-collecting tube extends into and is slidably connected to the spring device. The liquid-discharging tube passes through the liquid-collecting tube and the spring device, and is fixedly connected to the spring device. The applicator is snap-fitted and sealed at the protruding end of the liquid-discharging tube and is connected to the liquid-discharging tube. One end of the liquid-collecting tube is provided with a sealing part, and one end of the liquid-discharging tube is provided with a limiting part. The limiting part cooperates with the sealing part to limit the liquid-discharging tube. The liquid-discharging tube is provided with an elongated liquid outlet on one side of the limiting part, and is slidably connected to the sealing part. The sealing cap is installed at the other end of the liquid-collecting tube.

2. A test pen for carrying acetic acid reagent according to claim 1, characterized in that, The spring device includes a spring housing and a spring. The liquid-holding tube extends into the spring housing and is slidably connected to the liquid-holding tube. The spring is disposed between the spring housing and the liquid-holding tube. The liquid-discharging tube passes through the spring and the spring housing and is fixedly connected to the spring housing.

3. A testing pen for carrying acetic acid reagent according to claim 2, characterized in that, A pair of sliding protrusions are provided on the inner wall of the end of the spring housing away from the application device, and an L-shaped groove is provided on the outer wall of the liquid-holding tube. The sliding protrusions slide in the L-shaped groove to limit the position of the liquid-holding tube.

4. A test pen for carrying acetic acid reagent according to claim 1, characterized in that, The applicator includes a ball bearing and an applicator tip. The ball bearing rolls at the output end of the applicator tip. The applicator tip is snapped and sealed to the liquid outlet tube and is connected to the liquid outlet tube.

5. A test pen for carrying acetic acid reagent according to claim 1, characterized in that, The liquid-holding tube has a first vent hole at the end away from the application device. The sealing cap is rotatably connected to the liquid-holding tube. The sealing cap has an elongated vent hole. When the first vent hole is aligned with the elongated vent hole, it is used to balance the liquid-holding tube with atmospheric pressure.

6. A detection pen for carrying acetic acid reagent according to claim 2, characterized in that, The spring housing is provided with an extension, and a fixing ring is provided at the end of the extension away from the application device. The fixing ring is provided with a groove, and the sealing cover is provided with a protrusion. The protrusion is inserted into the groove to restrict the relative rotation of the sealing cover and the fixing ring.

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