Double-end sampling swab with inner sleeve layer and outer sleeve layer

Abstract

A double-end sampling swab with an inner sleeve layer and an outer sleeve layer comprises a handle and a sampling swab head at the front end, the sampling swab head is made of a water absorbing material, the handle is of a double-layer structure and comprises an inner core handle and an outer sleeve layer, the front end of the core handle is a main sampling swab head, and the front end of the sleeve layer is an auxiliary sampling swab head. The auxiliary sampling swab head is of an annular structure and is attached to the rear portion of the main sampling swab head, two samples can be obtained through one-time sampling of the sampling swab, the trouble of an operator and a sampled person is reduced, and the sampling speed is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of medical tests, and particularly to a double-headed sampling swab with inner and outer sheaths. Background Art

[0002] The Chinese invention patent application number is 202211029182.6, and the patent name is "A Method for Cross-Sorting and Mixing Samples for COVID-19 Detection". This method uses two swabs to dip samples in the oral cavity and separately puts them into two nucleic acid test tubes for sampling. The specific steps include: a. Sampling simultaneously with two swabs; b. Separately putting the swabs into the collection test tubes numbered in groups A and B. When a certain test tube in group A detects positive, since the same sample also exists in the corresponding test tube in group B, the corresponding test tube in group B will also detect positive. By comparing the personnel data in the two groups of test tubes, the infected person can be quickly locked. This method can not only reduce the detection cost, but also quickly and accurately identify the infected person, helping to reduce social costs. The implementation of this method requires using two sampling swabs each time to perform two pharyngeal samplings or nasal samplings on the person being sampled. For the medical staff performing the operation, the workload is doubled, and for the person being sampled, two cooperative actions are required, which is troublesome for both parties. It is necessary to improve the existing sampling swab to obtain two samples through one sampling, reduce the trouble for both parties, and improve the sampling speed. Summary of the Invention

[0003] The purpose of the present invention is to solve the above problems and provide a double-headed sampling swab with inner and outer sheaths.

[0004] The technical solution of the present invention is: a sampling swab with inner and outer sheaths for double samples, including a handle and a sampling swab head at the front end. The sampling swab head is made of a water-absorbing material. The handle is a double-layer structure, including an inner core handle and an outer sleeve layer. The front end of the core handle is the main sampling swab head, and the front end of the sleeve layer is the secondary sampling swab head. The secondary sampling swab head is an annular structure and fits on the rear part of the main sampling swab head. When this sampling swab is used for sampling, two sampling templates can be obtained through one sampling, and the main sampling swab head and the secondary sampling swab head can be separately removed for different detection schemes. Compared with the double-swab two-time sampling mentioned in the background art, it can improve the sampling speed, reduce the trouble for both parties, and improve the overall detection efficiency.

[0005] Preferably, the rear end of the core handle extends a certain length beyond the tail end of the sleeve layer. A sliding groove along the generatrix direction is provided on the side surface of a section at the tail of the sleeve layer, and a protruding positioning structure is provided at the corresponding position of the core handle. The sliding groove is used to adjust the telescoping of the core handle, which is convenient for breaking and leaving samples of the main and secondary sampling swab heads after sampling.

[0006] Preferably, the positioning structure is a positioning chuck that runs through and protrudes from the core handle transversely, and the diameter of the chuck is smaller than the width of the sliding groove. The chuck is located on the tail end face of the sleeve layer during sampling. When the main sampling swab head needs to be broken off after sampling, the chuck can be rotated and slid forward in the sliding groove to realize the main sampling swab head at the front end of the core handle, which is convenient for breaking and retaining the sample.

[0007] Preferably, the positioning structure is a positioning tongue formed by cutting and bending the two sides of the core handle, and the width of the positioning tongue is smaller than the width of the sliding groove. The positioning housing has the same function as the chuck and is made of the side material of the core handle itself, which reduces parts and reduces production costs.

[0008] Preferably, there are two sliding grooves, which are arranged symmetrically on the left and right, and there are two positioning clamps or positioning tongues, which are arranged symmetrically on the left and right. The telescopic sliding process of the two sliding grooves is more stable.

[0009] Preferably, the outer surface of the front section of the core body handle is provided with an annular breaking groove A, and the outer surface of the front section of the sleeve layer is provided with an annular breaking groove B. The annular breaking grooves A and B are not in the same position, and the distance from the annular breaking groove A to the outer end of the main sampling swab head is less than the length of the sliding groove. The annular breaking grooves A and B are provided to facilitate the breaking and sampling of the two swab heads. The two are in different positions, so that when the swab heads are subjected to lateral forces during sampling, they form mutual protection and are not easily broken. The length of the sliding groove is designed in this way to ensure that the annular breaking groove A can be exposed after the main sampling swab head is extended, so as to facilitate breaking.

[0010] Preferably, the core handle is a hollow tube structure; the hollow tube structure can weaken the structural strength of the core handle at the annular breaking groove armor, making the core handle easier to break; during sampling, the annular breaking groove armor is in a state of being sleeved in the sleeve layer; the sleeve layer replaces the annular breaking groove armor to resist bending, and the core handle is not easily broken at the annular breaking groove armor; after sampling is completed, the annular breaking groove armor extends out of the sleeve layer and is no longer protected by the sleeve layer; at this time, the core handle is easier to break.

[0011] Preferably, the front part of the main sampling swab head is a spherical part, the rear part is a conical part, the front section of the sleeve layer is a conical trumpet part matching the conical part, and the auxiliary sampling swab head surrounds the outer surface of the trumpet part. The trumpet part matches the conical set to ensure the stability of the two after installation, and it is not easy to loosen during sampling, and it is also easy to separate after sampling. The sides of the main and auxiliary sampling swab heads can both contact the body fluids of the sampled area, so that the two swab heads can complete sampling synchronously.

[0012] Preferably, the main sampling swab head is hemispherical and covers the outside of the hemispherical end at the front end of the core handle; the front end of the sleeve layer is a flanged part, and the outer diameter of the flanged part matches the diameter of the hemispherical end. The secondary sampling swab head surrounds the outer surface of the flanged part and the front section of the nearby sleeve layer. The flanged part ensures firm covering during the production of the secondary sampling swab head and forms an end face at the front end, which also facilitates separation after sampling. The outer surface of the secondary sampling swab head is also hemispherical. Such a combination of the main and secondary sampling swab heads forms a sphere, making the axial length of the sampling swab more compact and making it easier to achieve synchronous sampling with the two swab heads.

[0013] A double-headed sampling swab with inner and outer sleeve layers of the present invention includes a handle and a sampling swab head at the front end. The sampling swab head is made of absorbent material. The handle is a double-layer structure, including an inner core handle and an outer sleeve layer. The front end of the core handle is the main sampling swab head, and the front end of the sleeve layer is the secondary sampling swab head. The secondary sampling swab head is an annular structure and fits on the rear part of the main sampling swab head. This sampling swab can obtain two samples in one sampling, and at the same time, it can also reduce the trouble of both the operator and the person being sampled and improve the sampling speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view structural schematic diagram of the double-headed sampling swab with inner and outer sleeve layers in Embodiment 1; Figure 2 It is Figure 1 the A-A sectional structural schematic diagram and its partial enlarged schematic diagram of Figure 3 It is Figure 1 the enlarged schematic diagram of the B-B sectional structure of Figure 4 It is Figure 1 the three-dimensional structural schematic diagram of Figure 5 It is the three-dimensional structural schematic diagram after the core handle extends forward relative to the sleeve layer in Embodiment 1; Figure 6 It is the sectional structural schematic diagram after the core handle extends forward relative to the sleeve layer in Embodiment 1; Figure 7 It is a front view structural schematic diagram of the double-headed sampling swab with inner and outer sleeve layers in Embodiment 2; Figure 8 It is Figure 7 the A-A sectional structural schematic diagram and its partial enlarged schematic diagram of Figure 9 It is Figure 8 the enlarged schematic diagram of the B-B sectional structure of Figure 10 It is Figure 7 the three-dimensional structural schematic diagram of Figure 11 It is a schematic diagram of the three-dimensional structure of the core handle after it extends forward relative to the sleeve layer in the second embodiment; Figure 12 It is a schematic cross-sectional structure diagram of the core handle after it extends forward relative to the sleeve layer in the second embodiment; Figure 13 It is a schematic diagram of the cross-sectional structure of the core handle after it extends forward relative to the sleeve layer in the third embodiment; Figure 14 yes Figure 13 I magnified view of; Figure 15 yes Figure 13 II enlarged view; Figure 16 yes Figure 13 III magnified view; In the figure, 1. core handle, 11. annular breaking groove A, 12. positioning clamp, 13. positioning tongue, 2. sleeve layer, 21. bell mouth part, 22. annular breaking groove B, 23. air vent, 24. sliding groove, 25. guide chamfer, 3. main sampling swab head, 4. auxiliary sampling swab head. DETAILED DESCRIPTION

[0015] Example 1: See Figures 1-6 The figure shows a sampling swab with inner and outer layers and double samples, including a handle and a sampling swab head at the front end. The sampling swab head is made of absorbent material, and the handle is a double-layer structure, including an inner core handle 1 and an outer sleeve layer 2. The front end of the core handle 1 is a main sampling swab head 3, and the front end of the sleeve layer 2 is an auxiliary sampling swab head 4. The auxiliary sampling swab head 4 is an annular structure and fits the rear of the main sampling swab head 3. When the sampling swab is used for sampling, two sampling samples can be obtained by sampling at one time. The main sampling swab head 3 and the auxiliary sampling swab head 4 can be taken off separately for different detection schemes. Compared with the double swab twice sampling mentioned in the background technology, it can improve the sampling speed, reduce the trouble of both parties, and improve the overall detection efficiency.

[0016] The rear end of the core handle 1 extends a certain length beyond the rear end of the sleeve layer 2, and a sliding groove 24 along the generatrix direction is provided on the side of the rear end of the sleeve layer 2, and a protruding positioning structure is provided at the corresponding part of the core handle 1. The sliding groove 24 is used to adjust the extension and contraction of the core handle 1, and after sampling, it is convenient to break off the main and auxiliary sampling swab heads 4 to retain the sample.

[0017] The positioning structure is a positioning chuck 12 that penetrates transversely and protrudes from the core handle 1, and the diameter of the chuck is smaller than the width of the sliding groove 24. The chuck is located on the tail end face of the sleeve layer 2 during sampling. When the main sampling swab head 3 needs to be broken off after sampling, the chuck can be rotated and slid forward in the sliding groove 24 to realize the main sampling swab head 3 at the front end of the core handle 1, which is convenient for breaking and retaining the sample.

[0018] There are two sliding grooves 24, which are arranged symmetrically left and right. There are two positioning chucks 12 or positioning tongues 13, which are also arranged symmetrically left and right. The process of telescopic sliding of the two sliding grooves 24 is more stable.

[0019] An annular breaking groove A 11 is provided on the outer surface of the front section of the core body handle 1, and an annular breaking groove B 22 is provided on the outer surface of the front section of the sleeve layer 2. The annular breaking grooves A 11 and B are not in the same position. The distance from the annular breaking groove A 11 to the outer end of the main sampling swab head 3 is less than the length of the sliding groove 24. The annular breaking grooves A 11 and B are respectively for facilitating the breaking and sampling retention of the two swab heads. Their positions are different, so that they form mutual protection when bearing lateral force during sampling and are not easily broken. The length of the sliding groove 24 is designed in this way to ensure that the annular breaking groove A 11 can be exposed after the main sampling swab head 3 extends, facilitating breaking.

[0020] The front part of the main sampling swab head 3 is a spherical part, and the rear part is a conical part. The front section of the sleeve layer is a conical flared part 21 matching the conical part. The secondary sampling swab head 4 is wound around the outer surface of the flared part 21. The flared part 21 matches the conical sleeve, ensuring the stability after their installation, not being easily loosened during sampling, and also being convenient for separation after sampling. In this way, the sides of the main and secondary sampling swab heads 4 can both contact the body fluid at the sampled part, realizing synchronous sampling by the two swab heads.

[0021] The working process of this sampling swab: The manufactured sampling swab is as Figures 1-4 shown. At this time, the positioning chuck 12 supports on the tail end face of the sleeve layer 2 to realize the axial positioning between the core body handle 1 and the sleeve layer 2. At this time, holding the tail of the core body handle 1, the sampling swab can be operated to insert into parts of the human body such as the pharynx and nasal cavity where body fluid can be wiped. After wiping, the main and secondary sampling swab heads 4 at the front end are both adsorbed with body fluid to form a sampling sample. After taking out the sampling swab from the human body, rotate the outer sleeve layer 2 to make the positioning chuck 12 enter the sliding groove 24, push the core body handle 1 forward to separate the main and secondary sampling swab heads 4 front and back, and expose the annular breaking groove A 11. In this way, the front end of the core body handle 1 with the main sampling swab head 3 can be broken off first for sampling retention; then pull the core body handle 1 backward, and break off the flared part 21 with the secondary sampling swab head 4 for sampling retention. In this way, the sampling and sampling retention of the two samples are completed.

[0022] Embodiment 2: Refer to Figures 7-12 , Embodiment 2 is basically the same as Embodiment 1, and the same parts will not be repeated. The differences in Embodiment 2 are: 1. The positioning structure is a positioning tongue 13 formed by cutting and then bending outward on both sides of the core body handle 1. The width of the positioning tongue 13 is smaller than the width of the sliding groove 24. The positioning tongue has the same function as the chuck in the first embodiment. Here, it is made of the side material of the core body handle 1 itself, which can reduce the number of parts and lower the production cost.

[0023] 2. The main sampling swab head 3 is hemispherical and covers the outside of the hemispherical end at the front end of the core body handle 1; the front end of the sleeve layer is a flanging part, and the outer diameter of the flanging part matches the diameter of the hemispherical end. The secondary sampling swab head 4 is wound around the outer surface of the flanging part and the front section of the nearby sleeve layer. The flanging part ensures firm wrapping during the production of the secondary sampling swab head 4 and forms an end face at the front end, which is also convenient for the separation of the main and secondary parts after sampling. The outer surface of the secondary sampling swab head 4 is also hemispherical. Such a combination of the main and secondary sampling swab heads 4 forms a sphere, the axial length of the sampling swab is shorter and more compact, and it is easier to achieve synchronous sampling of the two swab heads.

[0024] In the annular breaking groove A 11 in the first embodiment and the second embodiment, there are air holes 23 that penetrate the sleeve layer 2 horizontally, which are used for ventilation between the outside, the sleeve layer 2 and the sliding gap between the core body handle 1, to avoid the problem of poor sliding caused by gas sealing.

[0025] Embodiment Three: Refer to Figures 13-16 , Embodiment Three is basically the same as Embodiment One, and the same parts will not be repeated. The differences in Embodiment Three are as follows: the core body handle 1 is a hollow tube structure; this hollow tube structure can weaken the structural strength of the core body handle 1 at the annular breaking groove A 11, making the core body handle 1 easier to be broken; during sampling, the annular breaking groove A 11 is in a state of being sleeved on the sleeve layer 2; the sleeve layer 2 resists bending instead of the annular breaking groove A 11, and the core body handle 1 is not easily broken at the annular breaking groove A 11; after sampling, the annular breaking groove A 11 extends out of the sleeve layer 2 and is no longer protected by the sleeve layer 2; at this time, the core body handle 1 is more easily broken.

[0026] Guide chamfers 25 are symmetrically arranged on both sides of the notch of the sliding groove 24; the positioning chuck 12 or the positioning tongue 13 can smoothly enter the sliding groove 24 by means of the guide chamfers 25 to realize the outward extension of the main sampling swab head 3 relative to the secondary sampling swab head 4.

Claims

1. A double-sample sampling swab with an inner and outer layer, comprising a handle and a sampling swab head at the front end, wherein the sampling swab head is made of a water-absorbing material, and is characterized by: The handle is double-layered The structure includes an internal core handle and an external sleeve layer. The front end of the core handle is a main sampling swab head, and the front end of the sleeve layer is an auxiliary sampling swab head. The auxiliary sampling swab head is a ring structure and is attached to the rear of the main sampling swab head.

2. The inner and outer layer double-headed sampling swab according to claim 1, characterized in that: The rear end of the core handle extends a certain length beyond the tail end of the sleeve layer, a sliding groove along the generatrix direction is provided on the side of the tail section of the sleeve layer, and a protruding positioning structure is provided at the corresponding position of the core handle.

3. The inner and outer layer double-headed sampling swab according to claim 2, characterized in that: The positioning structure is a positioning clamp that penetrates transversely and protrudes from the core handle, and the diameter of the clamp is smaller than the width of the sliding groove.

4. The inner and outer layer double-headed sampling swab according to claim 2, characterized in that: The positioning structure is a positioning tongue formed by cutting and bending the two sides of the core handle outward, and the width of the positioning tongue is smaller than the width of the sliding groove.

5. The inner and outer layer double-headed sampling swab according to claim 3 or 4, characterized in that: There are two sliding grooves, which are arranged symmetrically on the left and right. There are two positioning clamps or positioning tongues, which are arranged symmetrically on the left and right.

6. The inner and outer layer double-headed sampling swab according to claim 3 or 4, characterized in that: The outer surface of the front section of the core handle is provided with an annular breaking groove A, and the outer surface of the front section of the sleeve layer is provided with an annular breaking groove B. The annular breaking grooves A and B are not in the same position, and the distance from the annular breaking groove A to the outer end of the main sampling swab head is less than the length of the sliding groove.

7. The inner and outer layer double-headed sampling swab according to claim 1, characterized in that: The core handle is a hollow tube structure.

8. The inner and outer layer double-headed sampling swab according to claim 1, characterized in that: The main sampling swab head has a spherical front part and a conical rear part. The front section of the sleeve layer is a conical bell-mouth part matching the conical part. The auxiliary sampling swab head surrounds the outer surface of the bell-mouth part.

9. The inner and outer layer double-headed sampling swab according to claim 1, characterized in that: The main sampling swab head is hemispherical and is covered on the outside of the hemispherical end at the front end of the core handle; the front end of the sleeve layer is a flanged portion, the outer diameter of the flanged portion matches the diameter of the hemispherical end, and the auxiliary sampling swab head is surrounded on the outer surface of the flanged portion and the nearby front section of the sleeve layer, and the outer surface of the auxiliary sampling swab head is also hemispherical.

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