Deoxyribose nucleic acid (DNA) collection flocking swab

Abstract

The utility model discloses a DNA collection flocking swab, which comprises a swab rod, a cap body and a swab head, the swab rod comprises a base rod and an end rod, one end of the end rod is provided with a cavity, and one end of the base rod is movably connected in the cavity; the cap body comprises a base, a tail seat and a separating part, the tail seat is arranged on one side of the base in a leaning mode and connected with the swab rod, a through hole for the swab rod to penetrate through is formed in the base, and the separating part is arranged on the other side of the base and used for separating the swab rod when the joint of the base rod and the end rod slides to make contact with the separating part. The base rod and the end rod are separated by the separating piece; the swab head is arranged on the end rod. The base rod and the end rod are separated through the separating piece by pulling the tail seat and moving the swab rod, so that the end rod and the swab head are separated from the base rod together, bending type breaking operation is not needed, and breaking operation of the swab head is simplified.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of flocking swab, specifically relates to a DNA collection flocking swab. BACKGROUND

[0002] In the field of criminal case investigation, DNA testing, forensic medicine, genetics, etc., the extraction and preservation of trace biological evidence are often involved, and the flocking swab is a commonly used DNA collection tool. In order to facilitate the breaking of the flocking swab and subsequent detection work, the existing flocking swab is provided with a position facilitating breaking, for example, Chinese patent 201822273014.7 discloses a spherical head DNA collection flocking swab, one end of the conical head swab rod is connected with the spherical flocking swab head, one end of the three-section swab rod is connected with the handle, and the connection between the middle section swab rod and the three-section swab rod is provided with an inwardly recessed easy-breaking part.

[0003] For the above-mentioned prior art, there are still the following problems: in the breaking operation, if the operator lacks experience and the force control for breaking the flocking swab is not good, the flocking swab may bounce up when breaking, and the debris or fibers of the swab rod may splash, affecting the purity and integrity of DNA extraction. Therefore, in order to simplify the breaking operation, improve the stability of breaking, and optimize the difficulty of novice operation, a DNA collection flocking swab is proposed. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the above technical deficiencies, and proposes a DNA collection flocking swab to solve the technical problem that the force control for breaking the flocking swab in the prior art is not good, which may cause the flocking swab to bounce up when breaking, and the debris or fibers of the swab rod to splash.

[0005] To achieve the above technical purpose, the utility model adopts the following technical scheme:

[0006] The utility model provides a DNA collection flocking swab, which comprises:

[0007] The swab rod comprises a base rod and an end rod, one end of the end rod is provided with a cavity, and one end of the base rod is movably connected in the cavity;

[0008] The cap body comprises a base, an abutment and a separating piece, the abutment is arranged on one side of the base and connected with the swab rod, a through hole is formed in the base for the swab rod to pass through, and the separating piece is arranged on the other side of the base and used to separate the base rod and the end rod when the base rod and the end rod are in contact with the separating piece; and

[0009] The swab head is arranged on the end rod.

[0010] In some embodiments, a sleeve is further included, which is sleeved outside the swab rod and the swab head and detachably connected with the cap.

[0011] In some embodiments, a connector is arranged between the outer side of the base rod and the end of the end rod, which includes a plurality of plastic strips, both ends of the plastic strips being connected with the outer side of the base rod and the end of the end rod respectively.

[0012] In some embodiments, the separator includes an annular cylinder, the bottom of the annular cylinder being provided with an annular cutting edge for cutting the connector when the swab rod slides to contact the connector with the cutting element.

[0013] In some embodiments, the separator includes a plurality of convex rods, and the plurality of plastic strips are circumferentially distributed and form a plurality of gaps between adjacent plastic strips, the plurality of convex rods corresponding to the plurality of gaps one by one, for circumferentially rotating and breaking the plastic strips when the swab rod slides to contact the connector with the cutting element.

[0014] In some embodiments, both sides of the convex rod are provided with a strip-shaped cutting edge.

[0015] In some embodiments, a sleeve is arranged on the base, the inner diameter of the sleeve matching the inner diameter of the end rod.

[0016] In some embodiments, both sides of the tail seat are extended with a convex edge.

[0017] In some embodiments, the top of the base is provided with a clamping groove, and the bottom of the tail seat is provided with an elastic clamping piece, the elastic clamping piece being clamped with the clamping groove.

[0018] In some embodiments, the inner side of the through hole is provided with a sealing ring.

[0019] Compared with the prior art, the DNA collection and flocking swab provided by the utility model, by pulling the tail seat, moving the swab rod, and separating the base rod and the end rod by the separator, the end rod and the swab head are separated from the base rod, without the need for bending and breaking operation, the breaking operation of the swab head is simplified, and the force and the breaking position do not need to be deliberately controlled, so that the DNA collection and flocking swab is easier to use. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structure schematic view of the DNA collection and flocking swab provided by the utility model embodiment;

[0021] Figure 2 is a structure perspective view of the DNA collection and flocking swab sleeved with a sleeve provided by the utility model embodiment;

[0022] Figure 3It is the lifting structure schematic diagram of the DNA collection flocking swab provided by the embodiment of the utility model;

[0023] Figure 4 It is the A part local enlarged view of the utility model Figure 3 ;

[0024] Figure 5 It is another visual angle schematic diagram of the DNA collection flocking swab provided by the embodiment of the utility model;

[0025] Figure 6 It is the ring cylinder cutting structure schematic diagram of the DNA collection flocking swab provided by the embodiment of the utility model;

[0026] Figure 7 It is the B part local enlarged view of the utility model Figure 6 ;

[0027] Figure 8 It is the schematic diagram with sleeve structure of the DNA collection flocking swab provided by the embodiment of the utility model;

[0028] Figure 9 It is the lifting structure schematic diagram with sleeve of the DNA collection flocking swab provided by the embodiment of the utility model.

[0029] Mark explanation:

[0030] 1, swab rod; 11, base rod; 12, end rod; 13, connecting piece; 131, plastic strip; 101, cavity;

[0031] 2, cap body; 21, base; 2101, clamping groove; 22, tailstock; 2201, elastic card; 23, separating piece; 231, ring cylinder; 232, convex rod; 24, sleeve; 25, convex edge; 201, through hole; 202, sealing ring;

[0032] 3, swab head;

[0033] 4, sleeve. Specific implementation

[0034] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the following is combined with the drawing and embodiment, and the utility model is further described in detail.It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0035] In order to solve the technical problem that the intensity control of the flocking swab breaking is not good, which may lead to the bounce of the flocking swab when breaking, and the splashing of the swab rod debris or fiber, the utility model provides a DNA collection flocking swab, which can realize the breaking operation of the flocking swab is simplified, and the breaking is stable and not easy to bounce.

[0036] It should be noted that the DNA collection flocking swab is used for but not limited to DNA evidence collection and subsequent detection, and in order to facilitate the description, in the utility model, only the DNA collection flocking swab is applied to DNA evidence collection and subsequent detection as an example for description, and the principle of the DNA collection flocking swab applied to other collection scenes and subsequent detection is substantially same with the principle applied to DNA evidence collection and subsequent detection, which will not be described here.

[0037] Please refer to Figure 1 , Figure 1 It is the structure schematic diagram of the DNA collection flocking swab in one embodiment of the utility model, the DNA collection flocking swab includes swab rod 1, cap body 2 and swab head 3, swab rod 1 includes base rod 11 and end rod 12, one end of end rod 12 is provided with cavity 101, one end of base rod 11 is movably connected in cavity 101, and it can be separated under the action of external force of separating piece 23;Cap body 2 includes base 21, tail seat 22 and separating piece 23, tail seat 22 is arranged on one side of base 21 and is connected with swab rod 1, and swab rod 1 can be moved by pulling tail seat 22, a through hole 201 for swab rod 1 to penetrate is formed in base 21, the through hole 201 is used to guide the moving direction of swab rod 1, so that it moves on the axis, separating piece 23 is arranged on the other side of base 21, and is used to separate base rod 11 and end rod 12 when the connecting place of base rod 11 and end rod 12 slides to contact separating piece 23, so that separating piece 23 separates base rod and end rod 13;Swab head 3 is arranged on end rod 12, and swab head 3 is separated from base rod 11 by disconnecting end rod 12.

[0038] In the embodiment, cap body 2 is part of a handheld part, and the handheld cap body 2 collects DNA with swab head 3;After collection, swab head 3 needs to be disconnected and separated from the main body of swab rod 1, that is, separated from base rod 11, at this time, tail seat 22 needs to be pulled to pull up swab rod 1, so that separating piece 23 acts on the connecting place of base rod 11 and end rod 12, separating piece 23 forms external force, separates the connecting place of base rod 11 and end rod 12, separates swab head 3 from the main body of swab rod 1, and achieves the effect of disconnection;The above disconnection action does not need the operator to bend swab rod 1, only needs an up action, and does not need additional control force, and can disconnect connecting piece 13 by up to separating piece 23, the operation is simpler, and it is more convenient to hold, and there is no risk of bouncing, after disconnection, end rod 12 falls downward along the axis, and the disconnection direction is stable.

[0039] In one of the embodiments, please refer to Figure 2Also include a sleeve 4, the sleeve 4 is sleeved on the outside of the swab rod 1 and swab head 3, and is detachably connected with the cap 2, the sleeve 4 is connected with the cap 2 through threads, mainly used for the use scene of the need to save the tufted swab, can be stored in the sleeve 4, and in the subsequent scene of breaking, the swab head 3 is operated to break and separate.

[0040] In one embodiment, please refer to Figure 3 And Figure 4 The outer side of the base rod 11 and the end of the end rod 12 are provided with a connecting piece 13, which is arranged between the outer side of the base rod 11 and the end of the end rod 12, and plays a connecting and reinforcing role between the base rod 11 and the end rod 12, the connecting piece 13 includes a plurality of plastic strips 131, the two ends of the plastic strip 131 are connected with the outer side of the base rod 11 and the end of the end rod 12 respectively, the plastic strip 131 is a slender plastic connecting strip, which is arranged obliquely, and has an oblique cutting force when the separating piece 23 acts on it, so that the plastic strip 131 can be broken, that is, the gap between the base rod 11 and the end rod 12 is large enough, and the connecting piece 13 can be naturally separated under the action of gravity, without jamming, in processing, the plastic strip 131 can be connected on the base rod 11 by hot melting, and can be effectively broken by twisting or cutting when cutting.

[0041] In addition, the connecting piece 13 can also adopt an elastic clamping convex structure to form a clamping connection between the end rod 12 and the base rod 11 after insertion, stabilize the connection, and when the separating piece 23 is pushed, the clamping connection between the end rod 12 and the base rod 11 is disconnected under the pushing action, forming a separation effect.

[0042] In one embodiment, please refer to Figure 6 And Figure 7 The separating piece 23 includes an annular cylinder 231, and the bottom of the annular cylinder 231 is provided with an annular cutting edge for cutting the connecting piece 13 when the swab rod 1 slides to contact the connecting piece 13 and the cutting piece, when the separating piece 23 adopts the annular cylinder 231, the plastic strip 131 can be directly cut off by directly pulling up, which is simple and convenient to operate.

[0043] In one embodiment, please refer to Figure 3 And Figure 4The separating piece 23 comprises a plurality of convex rods 232, and a plurality of the plastic strips 131 are circumferentially distributed and form gaps between adjacent plastic strips 131, and the plurality of convex rods 232 correspond to each of the gaps, for circumferential rotation and breaking of the plastic strips 131 when the swab rod 1 slides to contact the connecting piece 13 and the cutting piece. The separating piece 23 has the operation of rotation relative to the cutting mode of the annular barrel 231, but can have a higher breaking rate. When the cutting edge manufacturing precision is insufficient, the annular barrel 231 can have a breaking failure, and the convex rod 232 is inserted into the gap and rotated, and has the effect of breaking the plastic strip 131.

[0044] Further, both sides of the convex rod 232 are provided with a strip-shaped cutting edge, so that the breaking of the plastic strip is more efficient.

[0045] In one embodiment, referring to Figure 8 and Figure 9 The sleeve 24 is arranged on the base 21, and the inner diameter of the sleeve 24 matches the inner diameter of the end rod 12. When the connecting piece 13 is pulled into the base 21, the end rod 12 is inserted into the sleeve 24, and the position of the end rod 12 is stabilized.

[0046] In one embodiment, referring to Figure 1 Both sides of the tail seat 22 extend the convex edge 25, which facilitates lifting of the tail seat 22.

[0047] Further, referring to Figure 3 and Figure 5 The top of the base 21 is provided with a clamping groove 2101, and the bottom of the tail seat 22 is provided with an elastic clamping 2201. The elastic clamping 2201 is clamped with the clamping groove 2101. The clamping of the elastic clamping 2201 and the clamping groove 2101 improves the stability of the abutting position of the tail seat 22 and the base 21. When the tail seat 22 is pulled, the elastic clamping 2201 and the clamping groove 2101 can be separated, and the pulling of the swab rod 1 is not affected.

[0048] Further, the inner side of the through hole 201 is provided with a sealing ring 202, which improves the sealing effect.

[0049] In order to better understand the present application, the following will be combined with Figures 1 to 9The technical scheme of the utility model is explained in detail: in use, DNA collection is operated according to the conventional flocked swab and is broken, that is, the tail seat 22 is pulled, the swab rod 1 is moved upwards, if the separating piece 23 is an annular cylinder 231, the annular cylinder 231 is pulled to cut the plastic strip 131, then the end rod 12 and the swab head 3 automatically fall off downwards; if the separating piece 23 is a plurality of convex rods 232, the convex rods 232 are pulled to be inserted into the gap between the plastic strips 131, the swab rod 1 is rotated, the convex rods 232 cut the plastic strips 131, then the end rod 12 and the swab head 3 automatically fall off downwards.

[0050] The specific embodiment of the utility model described above does not constitute the limitation of the protection scope of the utility model. Any various other corresponding changes and deformation made according to the technical concept of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A DNA collection flocked swab, comprising: The utility model relates to a swab rod, a cap body and a swab head. The utility model also includes a sleeve which is sleeved on the outer side of the swab rod and the swab head and detachably connected with the cap body. A connecting piece is arranged between the outer side of the base rod and the end of the end rod, and the connecting piece includes a plurality of plastic strips, the two ends of the plastic strips being respectively connected with the outer side of the base rod and the end of the end rod. The separating piece includes an annular cylinder, and the bottom of the annular cylinder is provided with an annular cutting edge for cutting the connecting piece when the swab rod slides to contact the cutting piece.

2. The DNA collection flocked swab of claim 1, wherein, The separating piece includes a plurality of convex rods, the plastic strips are circumferentially distributed, and a plurality of gaps are formed between adjacent plastic strips, a plurality of convex rods correspond to each gap, and the plastic strips are circumferentially rotated and broken when the swab rod slides to contact the cutting piece.

3. The DNA collection flocked swab of claim 2, wherein, The two sides of the convex rod are provided with strip-shaped cutting edges.

4. The DNA collection flocked swab of claim 3, wherein, The base is provided with a sleeve, and the inner diameter of the sleeve matches the inner diameter of the end rod.

5. The DNA collection flocked swab of claim 3, wherein, The tail seat is extended with convex edges on both sides.

6. The DNA collection flocked swab of claim 5, wherein, The top of the base is provided with a clamping groove, the bottom of the tail seat is provided with an elastic clamping piece, and the elastic clamping piece is clamped with the clamping groove.

7. The DNA collection flocked swab of claim 4 or 6, wherein, The inner side of the through hole is provided with a sealing ring.

8. The DNA collection flocked swab of claim 7, wherein, ​ 9. The DNA collection flocked swab of claim 8, wherein, ​ 10. The DNA collection flocked swab of claim 9, wherein, ​

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