Pharyngeal swab collecting cotton swab

Abstract

The invention provides a throat swab collecting cotton swab which comprises a cotton swab rod, a connecting rod and a collecting cotton swab head. The cotton swab rod and the connecting rod are integrally formed in an injection molding mode. The diameter of the cotton swab rod is one millimeter to three millimeters larger than that of the connecting rod. The collecting cotton swab head is connected to the top end of the connecting rod in a sleeved or glued mode. The whole collecting cotton swab head is arranged in an ellipsoid shape; the cotton swab rod comprises a cotton swab main rod, a circular raised head, anti-slip lines and a widening lug. According to the invention, the collection efficiency can be improved, and a multistage fiber structure of the pharyngeal cell adsorption outer layer, the adsorption secretion middle layer and the sample collection inner layer increases the sample adsorption amount; the elastic adjusting rod reduces pharyngeal stimulation and reduces the occurrence rate of vomiting reflex, and the design of the flexible section adapts to pharyngeal structures of different patients; and under the action of the condom and the breaking groove, the safety is enhanced, the accidental breaking risk can be prevented, and the operation stability is improved through the anti-skid design.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and particularly relates to a throat swab collection cotton swab. Background Art

[0002] Throat swab specimens are medical samples used for detecting pathogenic bacteria in respiratory tract infections, and secretions are collected from the pharyngeal and tonsillar regions of patients using sterile cotton swabs. This specimen type includes oropharyngeal swabs and nasopharyngeal swabs, and can detect pathogens such as novel coronavirus, Staphylococcus, and Streptococcus pneumoniae, providing a basis for the diagnosis of diseases such as diphtheria and suppurative tonsillitis.

[0003] During collection, the principle of aseptic operation needs to be followed. It is required that the patient fast and gargle before collection. After the medical staff use a tongue depressor to expose the pharynx, they gently wipe for sampling. The sample needs to be sent for inspection in a timely manner to ensure the accuracy of the detection. The test results help to detect pathogenic bacteria at an early stage, guide the formulation of treatment plans in clinical practice, and achieve the goal of early diagnosis and early treatment.

[0004] In addition, Chinese Patent Publication No. is CN115089223A, and the invention creation name is a throat swab collection cotton swab, which is characterized in that it includes: a main swab, a sleeve swab, an elastic element, and a cotton swab head. However, the existing throat swab collection tools still have problems such as a simple collection head structure, limited surface area, which affects the sample collection volume; the rod body lacks an elastic adjustment design, is inconvenient to operate, increases patient discomfort, and has a high risk of breakage, posing a safety hazard.

[0005] In view of this, it is very necessary to invent a throat swab collection cotton swab. Summary of the Invention

[0006] In order to solve the above technical problems, the present invention provides a throat swab collection cotton swab to solve the problems of the existing throat swab collection tools, such as a simple collection head structure, limited surface area, which affects the sample collection volume; the rod body lacks an elastic adjustment design, is inconvenient to operate, increases patient discomfort, and has a high risk of breakage, posing a safety hazard.

[0007] A throat swab collection cotton swab includes a cotton swab rod, a connecting rod, and a collection cotton swab head. The cotton swab rod and the connecting rod are integrally injection-molded together; the diameter of the cotton swab rod is one to three millimeters thicker than the diameter of the connecting rod; the collection cotton swab head is sleeved or glued to the top of the connecting rod; the collection cotton swab head is integrally set in an elliptical spherical shape.

[0008] Preferably, the cotton swab rod includes a cotton swab main rod, a circular convex head, anti-slip patterns, and a widened convex piece. The outer top end of the cotton swab main rod is provided with a circular convex head; the anti-slip patterns are engraved on the left outer surface of the cotton swab main rod; the widened convex piece is integrally compression-molded on the left side of the cotton swab main rod near the circular convex head end.

[0009] Preferably, the connecting rod includes an elastic rod body, a condom, a breaking groove, and abrasive ridges. The condom is slidably sleeved on the outer surface of the elastic rod body; the breaking groove is formed on the outer right side of the elastic rod body; the abrasive ridges are formed on the outer right side of the elastic rod body and are located on the right of the breaking groove.

[0010] Preferably, the collection cotton swab head includes a flocked cotton ball and a plastic-sealed sleeve. The plastic-sealed sleeve is integrally blow-molded on the left side of the flocked cotton ball; the flocked cotton ball is integrally spherical.

[0011] Preferably, the flocked cotton ball is composed of a pharyngeal cell adsorption outer layer, an adsorption and secretion middle layer, and a sample collection inner layer. A pH-sensitive dye strip is filled in the middle position inside the sample collection inner layer.

[0012] Preferably, the pharyngeal cell adsorption outer layer is made of a medical-grade polyester fiber (PET) or nylon (PA) short fiber layer, and the fiber diameter is 10-30 μm, the length is 1-3 mm, and it is arranged in a brush shape.

[0013] Preferably, the adsorption and secretion middle layer is an ultra-fine polypropylene (PP) or polyethylene (PE) fiber layer, the fiber diameter is 5-15 μm, and it is in a helical winding structure.

[0014] Preferably, the sample collection inner layer is a hydrophilic polyurethane (PU) sponge or a cellulose-based hydrogel layer. The porosity of the sample collection inner layer is ≥80%, and it can absorb and store liquid samples.

[0015] Preferably, the cotton swab rod is a composite structure of a shape memory alloy core material and a medical elastic plastic layer; the shape memory alloy core material is a nickel-titanium alloy or a copper-based shape memory alloy; the medical elastic plastic layer is a medical-grade TPE (thermoplastic elastomer) layer or a silicone layer.

[0016] Preferably, the condom can be slidably sleeved on the upper part of the breaking groove; the condom is a brittle polystyrene (PS) sleeve or a polylactic acid (PLA) sleeve.

[0017] Preferably, the pH-sensitive dye strip is a bromocresol purple strip or a phenol red strip; it is embedded in the sample collection inner layer 313 and changes from white to blue when encountering a sample (pH≥7.4); the color change threshold is 0.2 ml to ensure the sufficiency of collection.

[0018] Preferably, the pharyngeal swab collection cotton swab is placed in a medical dialysis paper + PET composite film, EO sterilized packaging bag.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: the pharyngeal swab collection cotton swab can improve the collection efficiency, the composite collection head design increases the cell capture rate by more than 30%, the flocked cotton ball, the pharyngeal cell adsorption outer layer, the adsorption secretion middle layer, and the multi-level fiber structure of the sample collection inner layer increase the sample adsorption amount by 50%; at the same time, the patient comfort is improved, the elastic adjustment rod reduces pharyngeal stimulation, reduces the incidence of vomiting reflex, and the flexible section design adapts to the pharyngeal structure of different patients; under the action of the condom and the breaking groove, the safety is enhanced and the risk of accidental breakage can be prevented, the anti-slip design improves the operational stability, and the rod body design conforms to ergonomics. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 It is a schematic structural diagram of the cotton swab rod of the present invention.

[0022] Figure 3 It is a structural schematic diagram of the connecting rod of the present invention.

[0023] Figure 4 It is a schematic structural diagram of the collection cotton swab head of the present invention.

[0024] Figure 5 It is a schematic cross-sectional structure diagram of a flocked cotton ball of the present invention.

[0025] In the figure: 1. Cotton swab rod; 11. Cotton swab main rod; 12. Round convex head; 13. Anti-slip texture; 14. Widened convex piece; 2. Connecting rod; 21. Elastic rod body; 22. Condom; 23. Breaking groove; 24. Increased wear texture; 3. Collection cotton swab head; 31. Flocked cotton ball; 311. Pharyngeal cell adsorption outer layer; 312. Adsorption secretion middle layer; 313. Sample collection inner layer; 3131. pH sensitive dye strip; 32. Plastic cover. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings: Example

[0027] As attached Figure 1 As shown, the present invention provides a throat swab collection cotton swab, comprising a cotton swab rod 1, a connecting rod 2 and a collection cotton swab head 3, wherein; the cotton swab rod 1 and the connecting rod 2 are integrally injection molded together; the diameter of the cotton swab rod 1 is one to three millimeters thicker than the diameter of the connecting rod 2; the collection cotton swab head 3 is sleeved or glued to the top of the connecting rod 2; the collection cotton swab head 3 is arranged in an elliptical spherical shape as a whole.

[0028] As attached Figure 2As shown, in the above embodiments, specifically, the cotton swab rod 1 includes a cotton swab main rod 11, a circular convex head 12, anti-slip lines 13 and a widened convex piece 14. The outer top end of the cotton swab main rod 11 is provided with a circular convex head 12; the anti-slip lines 13 are engraved on the left outer surface of the cotton swab main rod 11; the widened convex piece 14 is integrally compression-molded on the left side of the cotton swab main rod 11 near the circular convex head 12 end.

[0029] As shown in the Figure 3 attachment, in the above embodiments, specifically, the connecting rod 2 includes an elastic rod body 21, a condom 22, a breaking groove 23 and abrasive lines 24. The condom 22 is slidably sleeved on the outer surface of the elastic rod body 21; the breaking groove 23 is opened on the right outer side of the elastic rod body 21; the abrasive lines 24 are opened on the right outer surface of the elastic rod body 21 and are located on the right part of the breaking groove 23.

[0030] As shown in the Figure 4 attachment, in the above embodiments, specifically, the collection cotton swab head 3 includes a flocked cotton ball 31 and a plastic-sealed sleeve 32. The plastic-sealed sleeve 32 is integrally blow-molded on the left side of the flocked cotton ball 31; the flocked cotton ball 31 is integrally spherical.

[0031] As shown in the Figure 5 attachment, in the above embodiments, specifically, the flocked cotton ball 31 is composed of a pharyngeal cell adsorption outer layer 311, an adsorption and secretion middle layer 312, and a sample collection inner layer 313. A pH-sensitive dye strip 3131 is filled in the middle position inside the sample collection inner layer 313.

[0032] In the above embodiments, specifically, the pharyngeal cell adsorption outer layer 311 is made of a medical-grade polyester fiber (PET) or nylon (PA) short fiber layer, and the fiber diameter is 10 - 30 μm, the length is 1 - 3 mm, and it is arranged in a brush shape.

[0033] In the above embodiments, specifically, the adsorption and secretion middle layer 312 is an ultra-fine polypropylene (PP) or polyethylene (PE) fiber layer, the fiber diameter is 5 - 15 μm, and it has a helical winding structure.

[0034] In the above embodiments, specifically, the sample collection inner layer 313 is a hydrophilic polyurethane (PU) sponge or a cellulose-based hydrogel layer. The porosity of the sample collection inner layer 313 is ≥80%, and it can absorb and store liquid samples.

[0035] In the above embodiments, specifically, the cotton swab rod 1 is a composite structure of a shape memory alloy core material and a medical elastic plastic layer; the shape memory alloy core material is a nickel-titanium alloy or a copper-based shape memory alloy; the medical elastic plastic layer is a medical-grade TPE (thermoplastic elastomer) layer or a silicone layer.

[0036] In the above embodiments, specifically, the condom 22 can be slidably sleeved on the upper part of the breaking groove 23; the condom 22 is a brittle polystyrene (PS) sleeve or a polylactic acid (PLA) sleeve.

[0037] In the above embodiments, specifically, the pH-sensitive dye strip 3131 is a bromocresol purple strip or a phenol red strip; it is embedded in the sample collection inner layer 313 and changes from white to blue when encountering a sample (pH≥7.4); the color change threshold is 0.2 ml to ensure the sufficiency of collection.

[0038] In the above embodiments, specifically, the throat swab collection cotton swab is placed in a packaging bag made of medical dialysis paper + PET composite film and sterilized by EO.

[0039] The working process of the present invention is as follows: First, prepare before use and check the packaging: Ensure that the sterile packaging is intact, without damage or contamination; take out the cotton swab: Open the packaging along the tear opening, hold the proximal end of the rod body of the cotton swab main rod 11, the circular convex head 12, and the anti-slip pattern 13, and avoid touching the collection head; pinch the anti-slip pattern of the rod body (proximal rigid section) with the thumb and index finger, and the middle finger at the middle of the cotton swab main rod 11; the elastic rod body 21 section bends naturally to adapt to the curvature of the pharynx; enter the oral cavity and slowly enter along the buccal mucosa, avoiding the tongue surface to reduce the vomiting reflex; gently press the flocked cotton ball 31 on the posterior pharyngeal wall or tonsillar crypt (key sampling site); rotate the cotton swab 3-5 times (about 10 seconds) to scrape off exfoliated cells and secretions; slowly withdraw along the entry path, avoiding touching the teeth or tongue surface; immerse the flocked cotton ball 31 in the virus preservation solution (such as 3 ml VTM), and that's it.

[0040] The throat swab collection cotton swab can improve the collection efficiency. The composite collection head design can increase the cell capture rate by more than 30%. The multi-stage fiber structure of the flocked cotton ball 31, the pharyngeal cell adsorption outer layer 311, the adsorption secretion middle layer 312, and the sample collection inner layer 313 can increase the sample adsorption amount by 50%; at the same time, it can improve the patient's comfort. The elastic adjustable rod reduces pharyngeal irritation and reduces the incidence of vomiting reflex. The flexible section design adapts to the pharyngeal structures of different patients; under the action of the condom 22 and the breaking groove 23, the safety is enhanced, the risk of accidental breakage can be prevented, the anti-slip design improves the operation stability, and the ergonomic rod body design.

[0041] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention 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 invention.

[0042] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A throat swab collection cotton swab, characterized in that, The throat swab collection cotton swab comprises a cotton swab rod (1), a connecting rod (2) and a collection cotton swab head (3), wherein: the cotton swab rod (1) and the connecting rod (2) are integrally injection-molded together; the diameter of the cotton swab rod (1) is one to three millimeters thicker than the diameter of the connecting rod (2); the collection cotton swab head (3) is sleeved or glued to the top of the connecting rod (2); and the collection cotton swab head (3) is arranged in an elliptical spherical shape as a whole.

2. The throat swab collection cotton swab according to claim 1, characterized in that, The cotton swab rod (1) comprises a cotton swab main rod (11), a circular convex head (12), an anti-slip pattern (13) and a widening convex piece (14); the outer top end of the cotton swab main rod (11) is provided with a circular convex head (12); the anti-slip pattern (13) is engraved on the left side of the outer surface of the cotton swab main rod (11); and the widening convex piece (14) is integrally molded on the left side of the cotton swab main rod (11) near the end of the circular convex head (12).

3. The throat swab collection cotton swab according to claim 1, characterized in that, The connecting rod (2) comprises an elastic rod body (21), a safety cover (22), a breaking groove (23) and a wear-increasing groove (24); the safety cover (22) is slidably sleeved on the outer surface of the elastic rod body (21); the breaking groove (23) is opened on the right side of the outside of the elastic rod body (21); and the wear-increasing groove (24) is opened on the right side of the outer surface of the elastic rod body (21) and is located on the right part of the breaking groove (23).

4. The throat swab collection cotton swab according to claim 1, characterized in that, The collection cotton swab head (3) comprises a flocked cotton ball (31) and a plastic cover (32), wherein the plastic cover (32) is blow-molded integrally on the left side of the flocked cotton ball (31); the flocked cotton ball (31) is arranged in a spherical shape as a whole.

5. The throat swab collection cotton swab according to claim 4, wherein The flocked cotton ball (31) is composed of a pharyngeal cell adsorption outer layer (311), an adsorption secretion middle layer (312), and a sample collection inner layer (313), and the inner middle position of the sample collection inner layer (313) is filled with a pH sensitive dye strip (3131).

6. The throat swab collection cotton swab according to claim 5, wherein, The pharyngeal cell adsorption outer layer (311) is made of a medical-grade polyester fiber (PET) or nylon (PA) short fiber layer, and the fiber diameter is 10-30 μm, the length is 1-3 mm, and it is arranged in a brush shape.

7. The throat swab collection cotton swab according to claim 5, wherein, The adsorption and secretion middle layer (312) is an ultra-fine polypropylene (PP) or polyethylene (PE) fiber layer, the fiber diameter is 5-15 μm, and it has a spiral winding structure.

8. The throat swab collection cotton swab according to claim 5, characterized in that, The sample collection inner layer (313) is a hydrophilic polyurethane (PU) sponge or a cellulose-based hydrogel layer. The porosity of the sample collection inner layer (313) is ≥80%, and can absorb and store liquid samples.

9. The throat swab collection cotton swab according to claim 3, wherein The condom (22) can be slidably sleeved on the upper part of the breaking groove (23); the condom (22) is a brittle polystyrene (PS) sleeve or a polylactic acid (PLA) sleeve.

10. The throat swab collection cotton swab according to claim 5, characterized in that, The pH sensitive dye strip (3131) is a bromocresol purple strip or a phenol red strip; it is embedded in the sample collection inner layer 313 and changes from white to blue when encountering a sample (pH ≥ 7.4; the color change threshold is 0.2 ml to ensure sufficient collection.

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