Skin flora sampling device

Abstract

The present invention relates to the technical field of skin flora sampling, and in particular to a skin flora sampling device. The device includes a liquid supply mechanism, a rotating mechanism and a sampling mechanism; the liquid supply mechanism includes a liquid supply cylinder and a pressure relief tank; a driving force is transmitted to the liquid supply cylinder so that the sampling mechanism applies pressure to the skin, and when the sampling pressure applied by the sampling mechanism to the skin exceeds a threshold value, the medium partially enters the pressure relief tank. When the skin flora sampling device provided by the present invention is in use, a driving force is transmitted to the liquid supply cylinder so that the sampling mechanism applies pressure to the skin, and when the driving force exceeds the threshold value, the medium in the liquid supply cylinder is input to the rotating mechanism, and the rotating mechanism drives the sampling mechanism to sample the skin flora; when the sampling mechanism applies a sampling pressure to the skin that exceeds the threshold value, the medium partially enters the pressure relief tank to control the sampling pressure applied to the skin, thereby solving the problem of easy damage to the skin during flora sampling.

Description

Technical Field

[0001] The present invention relates to the technical field of skin flora sampling, and in particular to a skin flora sampling device. Background Art

[0002] The skin surface is colonized by numerous microorganisms. The host and the symbiotic microbial flora rely on the interaction of immune cells and molecular networks to establish and maintain the healthy homeostasis of the skin. By sampling the skin flora, we can analyze the microbial community on the skin surface, thereby gaining a deeper understanding of the pathogenesis of skin diseases. Existing skin flora sampling methods include tape adhesion sampling and tool scraping sampling. Both sampling methods require applying pressure to the skin at the sampling site. In order to ensure the collection effect of the flora, the skin at the sampling site is mostly the affected area.

[0003] However, since it is difficult to control the pressure applied to the skin during manual sampling, and the pressure-bearing capacity of the skin at the sampling site is different, the skin is easily damaged during the bacterial sampling process. Summary of the Invention

[0004] The present invention provides a skin flora sampling device to solve the problem that the skin is easily damaged during the flora sampling process because the pressure applied to the skin is difficult to control during the manual sampling process and the pressure bearing capacity of the skin at the sampling point is different.

[0005] In order to solve the above technical problems, the technical solution provided by the present invention is:

[0006] A skin flora sampling device:

[0007] It includes a liquid supply mechanism, a rotary mechanism and a sampling mechanism; the liquid supply mechanism includes a liquid supply cylinder and a pressure relief tank;

[0008] During operation, a driving force is transmitted to the liquid supply cylinder so that the sampling mechanism applies pressure to the skin. When the driving force exceeds the threshold, the medium in the liquid supply cylinder is input into the rotary mechanism, and the rotary mechanism drives the sampling mechanism to sample the skin flora; when the sampling pressure applied to the skin by the sampling mechanism exceeds the threshold, part of the medium enters the pressure relief tank.

[0009] Furthermore, the liquid supply mechanism also includes a liquid supply diverter and a drive one-way valve; the liquid supply diverter is connected to the liquid supply cylinder; the two ends of the drive one-way valve are respectively connected to the rotary mechanism and the liquid supply diverter to form a drive branch; when the driving force borne by the liquid supply cylinder is greater than the threshold value, the drive one-way valve is opened under the push of the medium, and the medium in the liquid supply cylinder flows through the liquid supply diverter and the drive one-way valve in sequence and enters the rotary mechanism.

[0010] Furthermore, the liquid supply mechanism also includes a pressure relief one-way valve; the two ends of the pressure relief one-way valve are respectively connected to the pressure relief tank and the liquid supply diversion piece to form a pressure relief branch; when the sampling mechanism applies a sampling pressure exceeding the threshold to the skin, the pressure relief one-way valve opens under the push of the medium, and part of the medium passing through the liquid supply diversion piece enters the pressure relief tank through the pressure relief one-way valve.

[0011] Furthermore, the pressure relief one-way valve and the driving one-way valve both include a valve body, a one-way valve plug, a pressure-regulating spring, a valve cover, a double-headed piston and a telescopic joint; the valve body is sleeved on the one-way valve plug and is slidingly connected to the one-way valve plug; one end of the one-way valve plug is sealed against the valve body, and the other end is abutted against the pressure-regulating spring; the end of the pressure-regulating spring facing away from the one-way valve plug is abutted against the double-headed piston; the valve cover is sleeved on the valve body and is threadedly connected to the double-headed piston; the two ends of the double-headed piston are respectively inserted into the valve body and the telescopic joint, and are slidingly connected to the valve body and the telescopic joint; the double-headed piston rotates along the valve cover to change the distance between the one-way valve plug and the double-headed piston, thereby changing the pre-compression amount of the pressure-regulating spring.

[0012] Furthermore, the rotary mechanism includes a rotary shaft, a rotary cylinder, a translation piston and a rotary pin; the rotary shaft is inserted into the rotary cylinder and is rotationally connected to the rotary cylinder; the translation piston is sleeved on the rotary shaft and is slidingly connected to the rotary shaft; a rotary groove is provided on the outer surface of the rotary shaft; one end of the rotary pin is connected to the translation piston, and the other end is inserted into the rotary groove; the liquid supply cylinder injects a medium into the rotary cylinder to make the translation piston move along the rotary cylinder, and the translation piston drives the rotary pin to move along the rotary groove, thereby driving the rotary shaft to rotate.

[0013] Furthermore, the sampling mechanism includes a support shaft, a collecting tape, a storage shaft and an extrusion roller; the storage shaft is transmission-connected to the rotating shaft through a synchronization component; one end of the collecting tape is connected to the support shaft and wound around the support shaft, and the other end is connected to the storage shaft; the extrusion roller is located between the support shaft and the storage shaft, and abuts against the side of the collecting tape away from the skin; during operation, the part of the collecting tape between the support shaft and the extrusion roller abuts against the skin under the action of sampling pressure, and the rotating shaft drives the storage shaft to rotate through the synchronization component, so that the collecting tape is partially wound around the storage shaft, thereby driving the skin flora sampling device to move along the skin, and the skin flora is collected during the movement of the collecting tape.

[0014] Furthermore, the sampling mechanism also includes an overhead roller; the overhead roller is mounted on the support shaft; the outer diameter of the overhead roller is larger than the outer diameter of the collection tape wrapped on the storage shaft; during operation, the overhead roller abuts against the skin under the action of sampling pressure, so that the extrusion roller drives the collection tape to make linear contact with the skin, and the storage shaft drives the overhead roller to rotate, thereby driving the skin flora sampling device to move along the skin, and during this process, the collection tape slides along the skin.

[0015] Furthermore, the collection roll includes a base tape, a collection layer and an adhesive tape; the collection layer and the adhesive tape are installed on the side of the base tape facing the skin, and are alternately arranged along the length direction of the base tape; when the collection roll is wound onto the storage shaft, the adhesive tape adheres the two adjacent layers of the base tape to form a sealed cavity, and the sealed cavity is accommodated in the collection layer.

[0016] Furthermore, the storage shaft includes a storage rod and a storage sleeve; the storage rod and the storage sleeve are detachably connected; and the collecting belt is connected to the storage rod.

[0017] Furthermore, the sampling mechanism also includes a belt-breaking knife; the belt-breaking knife is located on the front side of the storage shaft; after the adhesive belt is adhered to the base belt, the base belt subsequently contacts the belt-breaking knife to break the base belt.

[0018] The beneficial effects of the skin flora sampling device of the present invention are analyzed as follows:

[0019] The device includes a liquid supply mechanism, a rotating mechanism and a sampling mechanism; the liquid supply mechanism includes a liquid supply cylinder and a pressure relief tank; during operation, a driving force is transmitted to the liquid supply cylinder so that the sampling mechanism applies pressure to the skin. When the driving force exceeds the threshold, the medium in the liquid supply cylinder is input into the rotating mechanism, and the rotating mechanism drives the sampling mechanism to sample the skin flora; when the sampling pressure applied to the skin by the sampling mechanism exceeds the threshold, part of the medium enters the pressure relief tank.

[0020] When in use, the skin flora sampling device provided by the present invention transmits a driving force to the liquid supply cylinder so that the sampling mechanism applies pressure to the skin. When the driving force exceeds a threshold, the medium in the liquid supply cylinder is input into the rotary mechanism, and the rotary mechanism drives the sampling mechanism to sample the skin flora. When the sampling pressure applied to the skin by the sampling mechanism exceeds the threshold, part of the medium enters the pressure relief tank to control the sampling pressure applied to the skin, thereby solving the problem of easy damage to the skin during the flora sampling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in related technologies, the following briefly introduces the drawings required for use in the specific embodiments or related technical descriptions. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A schematic structural diagram of a skin flora sampling device provided in an embodiment of the present invention;

[0023] Figure 2 A right side view of the skin flora sampling device provided by an embodiment of the present invention;

[0024] Figure 3 A rear view of the skin flora sampling device provided by an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of the combined structure of the liquid supply mechanism and the rotary mechanism in the skin flora sampling device provided in an embodiment of the present invention;

[0026] Figure 5 A bottom view of the combination of the liquid supply mechanism and the rotary mechanism of the skin flora sampling device provided by an embodiment of the present invention;

[0027] Figure 6 An exploded schematic diagram of the three-dimensional structure of the rotary mechanism in the skin flora sampling device provided in an embodiment of the present invention;

[0028] Figure 7 A schematic diagram of the structure of the collection tape in the skin flora sampling device provided in an embodiment of the present invention;

[0029] Figure 8 Schematic diagram of the combined structure of the support shaft, collection belt and storage shaft in the skin flora sampling device provided by an embodiment of the present invention;

[0030] Figure 9 A cross-sectional view of a pressure relief one-way valve and a drive one-way valve in a skin flora sampling device provided in an embodiment of the present invention.

[0031] icon:

[0032] 100-Liquid supply mechanism; 110-Liquid supply cylinder; 111-Cylinder body; 112-Piston rod; 120-Pressure relief tank; 130-Liquid supply diverter; 140-Pressure relief check valve; 150-Drive check valve; 160-Reset diverter; 170-Reset check valve; 180-Compensating check valve; 190-Auxiliary pipe; 101-Valve body; 102-Check valve plug; 103-Pressure regulating spring; 104-Valve cover; 105-Double-headed piston; 106-Expansion joint; 200-Slewing mechanism; 210-Slewing shaft; 211-Slewing Rotating groove; 220-rotating cylinder; 230-translational piston; 240-rotating pin; 300-sampling mechanism; 310-support shaft; 311-collecting rod; 312-collecting sleeve; 313-collecting bolt; 320-collecting tape; 321-base tape; 322-collecting layer; 323-adhesive tape; 330-storing shaft; 331-storing rod; 332-storing sleeve; 333-storing bolt; 340-overhead roller; 350-squeezing roller; 360-elastic pressure plate; 370-tape tearing knife; 380-tape breaking knife. DETAILED DESCRIPTION

[0033] Since it is difficult to control the pressure applied to the skin during manual sampling, and the pressure-bearing capacity of the skin at the sampling site is different, the skin is easily damaged during the bacterial sampling process.

[0034] In view of this, the present solution provides a skin flora sampling device, including a liquid supply mechanism 100 , a rotating mechanism 200 and a sampling mechanism 300 .

[0035] The following combination Figures 1-9 The structure and shape of the skin flora sampling device provided in this embodiment are described in detail:

[0036] The liquid supply mechanism 100 includes a liquid supply cylinder 110 and a pressure relief tank 120; during operation, a driving force is transmitted to the liquid supply cylinder so that the sampling mechanism applies pressure to the skin. When the driving force exceeds the threshold, the medium in the liquid supply cylinder is input into the rotary mechanism, and the rotary mechanism drives the sampling mechanism to sample the skin flora; when the sampling mechanism applies a sampling pressure on the skin that exceeds the threshold, part of the medium enters the pressure relief tank.

[0037] In this embodiment: by transmitting a driving force to the liquid supply cylinder 110, the sampling mechanism 300 applies pressure to the skin. When the driving force exceeds a threshold, the medium in the liquid supply cylinder 110 is input into the rotary mechanism 200, and the rotary mechanism 200 drives the sampling mechanism 300 to sample the skin flora. The pressure transmitted to the sampling mechanism 300 by the liquid supply cylinder 110 while driving the rotary mechanism 200 is greater than the lower limit of the pressure required for the sampling mechanism 300 to collect skin flora, thereby avoiding the influence of insufficient sampling pressure on the collection of skin flora.

[0038] When the sampling pressure applied to the skin by the sampling mechanism 300 exceeds the threshold, the medium partially enters the pressure relief tank 120 to control the sampling pressure applied to the skin, thereby solving the problem of easy damage to the skin during the flora sampling process.

[0039] Regarding the shape and structure of the liquid supply mechanism 100 in more detail:

[0040] The liquid supply cylinder 110 includes a cylinder body 111 and a piston rod 112 ; the piston rod 112 is inserted into the cylinder body 111 and is slidably connected to the cylinder body 111 ; the driving force drives the piston rod 112 to move along the cylinder body 111 , thereby inputting the medium in the cylinder body 111 into the rotary mechanism 200 .

[0041] In order to ensure that the medium in the liquid supply cylinder 110 is input into the rotary mechanism 200 when the driving force exceeds the threshold, the liquid supply mechanism 100 further includes a liquid supply diverter 130 and a driving one-way valve 150 .

[0042] Specifically, the liquid supply diverter 130 is connected to the liquid supply cylinder 110; the two ends of the driving one-way valve 150 are respectively connected to the rotary mechanism 200 and the liquid supply diverter 130 to form a driving branch; when the driving force borne by the liquid supply cylinder 110 is greater than the threshold value, the driving one-way valve 150 opens under the push of the medium, and the medium in the liquid supply cylinder 110 flows through the liquid supply diverter 130 and the driving one-way valve 150 in turn and enters the rotary mechanism 200.

[0043] In order to ensure that part of the medium enters the pressure relief tank 120 when the sampling pressure applied to the skin by the sampling mechanism 300 exceeds a threshold, the liquid supply mechanism 100 further includes a pressure relief one-way valve 140 .

[0044] Specifically, the two ends of the pressure relief one-way valve 140 are respectively connected to the pressure relief tank 120 and the liquid supply diverter 130 to form a pressure relief branch; when the sampling mechanism 300 applies a sampling pressure to the skin that exceeds the threshold, the pressure relief one-way valve 140 opens under the push of the medium, and part of the medium passing through the liquid supply diverter 130 enters the pressure relief tank 120 through the pressure relief one-way valve 140.

[0045] How to adjust the sampling pressure according to the patient's actual condition:

[0046] The pressure relief one-way valve 140 and the driving one-way valve 150 both include a valve body 101, a one-way valve plug 102, a pressure-regulating spring 103, a valve cover 104, a double-headed piston 105 and a telescopic joint 106; the valve body 101 is sleeved on the one-way valve plug 102 and is slidingly connected to the one-way valve plug 102; one end of the one-way valve plug 102 is abutted and sealed against the valve body 101, and the other end is abutted against the pressure-regulating spring 103; the end of the pressure-regulating spring 103 facing away from the one-way valve plug 102 is abutted against the double-headed piston 105; the valve cover 104 is sleeved on the valve body 101 and is threadedly connected to the double-headed piston 105; the two ends of the double-headed piston 105 are respectively inserted into the valve body 101 and the telescopic joint 106, and are slidingly connected to the valve body 101 and the telescopic joint 106. The double-headed piston 105 rotates along the valve cover 104 to change the distance between the one-way valve plug 102 and the double-headed piston 105 , thereby changing the pre-compression amount of the pressure-adjusting spring 103 .

[0047] In this embodiment, the sampling pressure range is determined based on the actual skin condition of the patient, which includes the type of disease and the severity of the disease. After the sampling pressure range is determined, the double-headed piston 105 is driven to rotate along the valve cover 104 to change the distance between the one-way valve plug 102 and the double-headed piston 105, thereby changing the pre-compression amount of the pressure regulating spring 103, and driving the opening pressure of the one-way valve 150 and the pressure relief one-way valve 140 to correspond to the lower and upper limits of the sampling pressure.

[0048] After the skin flora sampling device is adjusted, it is placed at the skin sampling position, and then the driving force is transmitted to the liquid supply cylinder 110. When the driving force borne by the liquid supply cylinder 110 exceeds the threshold, the piston rod 112 moves along the cylinder body 111 to open the driving one-way valve 150 under the push of the medium, and then the medium in the rodless cavity of the cylinder body 111 enters the rotary mechanism 200 through the liquid supply diverter 130 and the driving one-way valve 150. The pressure transmitted to the sampling mechanism 300 by the liquid supply cylinder 110 while driving the rotary mechanism 200 is greater than the lower limit of the pressure required for the sampling mechanism 300 to collect skin flora.

[0049] When the sampling pressure applied to the skin by the sampling mechanism 300 exceeds the threshold, the pressure relief one-way valve 140 opens under the push of the medium, and part of the medium passing through the liquid supply diversion piece 130 enters the pressure relief tank 120 through the pressure relief one-way valve 140, thereby controlling the collection pressure transmitted to the skin by the sampling mechanism 300 to be below the upper limit.

[0050] Regarding the shape and structure of the rotary mechanism 200 in more detail:

[0051] The rotary mechanism 200 includes a rotary shaft 210, a rotary cylinder 220, a translation piston 230, and a rotary pin 240; the rotary shaft 210 is inserted into the rotary cylinder 220 and is rotatably connected to the rotary cylinder 220;

[0052] The translation piston 230 is mounted on and slidably connected to the rotating shaft 210. A rotation groove 211 is defined on the outer surface of the rotating shaft 210. One end of the rotation pin 240 is connected to the translation piston 230, while the other end is inserted into the rotation groove 211. The fluid supply cylinder 110 injects fluid into the rotating cylinder 220, causing the translation piston 230 to move along the rotating cylinder 220. The translation piston 230 drives the rotation pin 240 to move along the rotation groove 211, thereby rotating the rotating shaft 210.

[0053] To prevent the translating piston 230 from rotating relative to the rotating drum 220:

[0054] A guide strip is provided on the inner wall of the rotary cylinder 220; a guide groove is provided on the contact surface between the translation piston 230 and the rotary cylinder 220; the guide groove is fitted on the guide strip and is slidably connected to the guide strip, and the guide strip and the guide groove cooperate with each other to limit the rotational movement pair of the translation piston 230 and the rotary cylinder 220, thereby preventing the translation piston 230 from rotating relative to the rotary cylinder 220.

[0055] In this embodiment, the translation piston 230 divides the annular space surrounded by the rotating shaft 210 and the rotating cylinder 220 into a driving chamber and a reset chamber. The piston rod 112 drives the medium in the rodless chamber of the cylinder body 111 into the driving chamber of the rotating cylinder 220, so that the translation piston 230 moves along the rotating cylinder 220. The translation piston 230 drives the rotating pin 240 to move along the rotating groove 211, and the rotating groove 211 drives the rotating shaft 210 to rotate through its own structure.

[0056] In order to return the medium in the rotary mechanism 200 and the pressure relief tank 120 to the liquid supply cylinder 110 during the resetting process, the liquid supply mechanism 100 further includes a resetting diverter 160 , a resetting check valve 170 and a compensation check valve 180 .

[0057] Specifically, the reset diverter 160 is connected to the rodless chamber of the cylinder body 111; the two ends of the reset check valve 170 are respectively connected to the drive chamber of the rotary drum 220 and the reset diverter 160 to form a reset branch; the two ends of the compensation check valve 180 are respectively connected to the pressure relief tank 120 and the reset diverter 160 to form a compensation branch. When the liquid supply cylinder 110 is reset, the piston rod 112 moves along the cylinder body 111 to open the reset check valve 170, and then the medium in the drive chamber of the rotary drum 220 flows back into the rodless chamber of the cylinder body 111, thereby driving the translation piston 230 to reset. When the translation piston 230 moves to its original position and the liquid supply cylinder 110 has not been reset, the compensation check valve 180 opens to allow the medium in the pressure relief tank 120 to flow back into the rodless chamber of the cylinder body 111.

[0058] In order to facilitate the rotary drum 220 to drive the medium in the cavity to flow back to the rodless cavity of the cylinder body 111, the liquid supply mechanism 100 further includes an auxiliary pipe 190.

[0059] Specifically, one end of the auxiliary tube 190 is connected to the rod cavity of the cylinder body 111, and the other end is connected to the reset cavity of the rotary cylinder 220; when the liquid supply cylinder 110 is reset, the piston rod 112 moves along the cylinder body 111, so that the medium in the rod cavity of the cylinder body 111 enters the reset cavity of the rotary cylinder 220 through the auxiliary tube 190, and then drives the translation piston 230 to move along the rotary cylinder 220, so that the rotary cylinder 220 drives the medium in the cavity to flow back to the rodless cavity of the cylinder body 111.

[0060] In this embodiment, the piston rod 112 is driven to move along the cylinder body 111, so that the medium in the rod cavity of the cylinder body 111 enters the reset cavity of the rotary cylinder 220 through the auxiliary pipe 190, and then drives the translation piston 230 to move along the rotary cylinder 220. The translation piston 230 drives the rotary cylinder 220 to drive the medium in the cavity to flow back to the rodless cavity of the cylinder body 111 through the reset one-way valve 170 and the reset diverter 160.

[0061] When the translation piston 230 moves to its original position and the liquid supply cylinder 110 is not reset, the piston rod 112 continues to move along the cylinder body 111. The suction force generated during the movement of the piston rod 112 opens the compensation one-way valve 180, so that the medium in the pressure relief tank 120 flows back to the rodless chamber of the cylinder body 111 through the compensation one-way valve 180 and the reset diverter 160.

[0062] Regarding the shape and structure of the sampling mechanism 300 in more detail:

[0063] The sampling mechanism 300 includes a support shaft 310, a collection belt 320, a storage shaft 330, and an extrusion roller 350. The storage shaft 330 is connected to the rotating shaft 210 through a synchronous component. One end of the collection belt 320 is connected to the support shaft 310 and is wound around the support shaft 310, and the other end is connected to the storage shaft 330. The extrusion roller 350 is located between the support shaft 310 and the storage shaft 330 and abuts the side of the collection belt 320 away from the skin. During operation, the portion of the collection belt 320 between the support shaft 310 and the extrusion roller 350 abuts the skin under the action of the sampling pressure. The rotating shaft 210 drives the storage shaft 330 to rotate through the synchronous component, so that the collection belt 320 is partially wound around the storage shaft 330, thereby driving the skin flora sampling device to move along the skin. The collection belt 320 collects skin flora during the movement.

[0064] In order to realize that the rotary shaft 210 drives the storage shaft 330 to rotate through the synchronous component, the synchronous component includes a driving synchronous wheel, a follower synchronous wheel and a synchronous belt.

[0065] Specifically, the driving synchronous wheel is assembled with the rotary shaft 210; the following synchronous wheel is assembled with the storage shaft 330; and the driving synchronous wheel and the following synchronous wheel are connected via a synchronous belt transmission.

[0066] To facilitate installation and replacement of the collection tape 320:

[0067] The support shaft 310 includes a collecting rod 311, a collecting sleeve 312 and a collecting bolt 313; the collecting bolt 313 is inserted into the collecting sleeve 312 and is slidably connected along the collecting sleeve 312; the collecting rod 311 is connected to the collecting sleeve 312 through the collecting bolt 313; the collecting tape 320 is wrapped around the collecting rod 311; the collecting rod 311 on which the collecting tape 320 is used is separated from the collecting sleeve 312 through the collecting bolt 313, and then the collecting rod 311 wrapped with the collecting tape 320 is fixed to the collecting sleeve 312 through the collecting bolt 313, thereby completing the replacement of the collecting tape 320.

[0068] In this embodiment, part of the collecting tape 320 between the support shaft 310 and the extrusion roller 350 abuts against the skin under the action of the sampling pressure, and the rotating shaft 210 drives the storage shaft 330 to rotate through the synchronization component, so that part of the collecting tape 320 is wound around the storage shaft 330. The collecting tape 320 drives the skin flora sampling device to move through the static friction between the collecting tape 320 and the skin, thereby collecting the skin flora.

[0069] In order to increase the collection effect of skin flora, the sampling mechanism 300 also includes an overhead roller 340.

[0070] Specifically, the overhead roller 340 is mounted on the support shaft 310; the outer diameter of the overhead roller 340 is larger than the outer diameter of the collection tape 320 wound on the storage shaft 330; during operation, the overhead roller 340 abuts against the skin under the action of the sampling pressure, so that the extrusion roller 350 drives the collection tape 320 to make contact with the skin line, and the storage shaft 330 drives the overhead roller 340 to rotate, thereby driving the skin flora sampling device to move along the skin, and during this process, the collection tape 320 slides along the skin.

[0071] In this embodiment, the overhead roller 340 abuts against the skin under the action of sampling pressure, so that the extrusion roller 350 drives the collection tape 320 to make linear contact with the skin, and the storage shaft 330 drives the support shaft 310 to rotate through the collection tape 320, and the support shaft 310 drives the overhead roller 340 to rotate. The overhead roller 340 drives the skin flora sampling device to move along the skin through static friction between the overhead roller 340 and the skin. Because the outer diameter of the overhead roller 340 is larger than the outer diameter of the collection tape 320 wound on the storage shaft 330, the moving speed of the collection tape 320 is smaller than the moving speed of the skin flora collection device, and then the collection tape 320 and the skin move relative to each other, so that the collection tape 320 scrapes and collects the skin flora under the action of the collection pressure.

[0072] In order to prevent the sampled bacteria on the collection tape 320 from being contaminated, the collection tape 320 includes a base tape 321 , a collection layer 322 and an adhesive tape 323 .

[0073] Specifically, the collection layer 322 and the adhesive tape 323 are installed on the side of the base tape 321 facing the skin, and are alternately arranged along the length direction of the base tape 321; when the collection roll 320 is wound onto the storage shaft 330, the adhesive tape 323 adheres the two adjacent layers of the base tape 321 to form a sealed cavity, which accommodates the collection layer 322.

[0074] To facilitate the collection of bacterial flora for culture:

[0075] When the bacterial colony needs to be transferred to a culture dish, the collection layer 322 is separated from the base tape 321 , and then the collection layer 322 carrying the bacterial colony is directly placed in the culture dish, and the culture dish cultures the bacterial colony carried by the collection layer 322 .

[0076] In this embodiment, the storage shaft 330 drives the base belt 321 to wrap around its surface, and the base belt 321 drives the collection layer 322 and the adhesive tape 323 to move. During this process, the collection layer 322 collects the skin flora. After the flora is collected, the collection layer 322 is wrapped around the storage shaft 330 along with the base belt 321, and then the adhesive tape 323 is wrapped around the storage shaft 330 along with the base belt 321. The adhesive tape 323 adheres to the side of the base belt 321 facing the skin. At this time, the collection layer 322 after the flora is collected is located in the sealed cavity formed by the adhesive tape 323 and the base belt 321, thereby separating it from the external environment.

[0077] In order to facilitate separation of the collecting web 320 wound on the receiving shaft 330 , the receiving shaft 330 includes a receiving rod 331 and a receiving sleeve 332 .

[0078] Specifically, the storage rod 331 is detachably connected to the storage sleeve 332 ; the collection belt 320 is connected to the storage rod 331 .

[0079] In order to achieve detachable connection between the storage rod 331 and the storage sleeve 332 , the storage shaft 330 further includes a storage bolt 333 .

[0080] Specifically, the receiving bolt 333 is inserted into the receiving sleeve 332 and is slidably connected along the receiving sleeve 332 ; the receiving rod 331 is connected to the receiving sleeve 332 via the receiving bolt 333 .

[0081] In order to separate the collecting tape 320 wound on the receiving rod 331 from the collecting tape 320 wound on the supporting shaft 310 , the sampling mechanism 300 further includes a tape breaking knife 380 .

[0082] Specifically, the tape-breaking knife 380 is located at the front side of the storage shaft 330 ; after the adhesive tape 323 is adhered to the base tape 321 , the base tape 321 subsequently contacts the tape-breaking knife 380 to break the base tape 321 .

[0083] In order to prevent the collection tape 320 wound on the storage shaft 330 from loosening, the sampling mechanism 300 further includes an elastic pressing plate 360 ​​.

[0084] Specifically, the elastic pressing plate 360 ​​is located above the supporting shaft 310 and abuts against the collecting tape 320 so that the collecting tape 320 is wound around the supporting shaft 310 .

[0085] In order to separate the collection roll 320 in contact with the patient from the collection roll 320 not in contact with the patient, the sampling mechanism 300 further includes a tearing knife 370 .

[0086] Specifically, the tearing knife 370 is connected to the elastic pressure plate 360 ​​; after the breaking knife 380 breaks the collection tape 320 , it drives the base tape 321 to move toward the tearing knife 370 so that the tearing knife 370 breaks the base tape 321 .

[0087] The folding roller 330 is connected to the collecting roller 320 by the belt-breaking knife 380, and the belt-breaking knife 380 cuts the base belt 321. At this time, the elastic pressure plate 360 ​​contacts the collecting roller 320, so that the unused collecting roller 320 is still wound on the supporting shaft 310. Then, the collecting rod 331 with the collecting roller 320 is separated from the collecting sleeve 332. The collection layer 322 wrapped in the sealed cavity formed by the adhesive tape 323 and the base tape 321 is marked and stored, and then a new storage rod 331 is connected to the storage sleeve 332, and then the collection tape 320 that has been in contact with the patient is driven to move toward the tearing knife 370, and then the collection tape 320 that has been in contact with the patient and the unused collection tape 320 wrapped on the support shaft 310 are separated, and then one end of the collection tape 320 wrapped on the support shaft 310 is fixed on the storage rod 331 for subsequent operations.

[0088] In order to connect the liquid supply mechanism 100 , the rotating mechanism 200 and the sampling mechanism 300 to each other, a supporting frame is also included.

[0089] Specifically, the liquid supply cylinder 110 and the pressure relief tank 120 are both inserted into the carrying frame; the rotating mechanism 200 is connected to the carrying frame through a rotating bracket; the support shaft 310 is connected to the carrying frame through a supporting bracket, and the support shaft 310 rotates along its own axis; the storage shaft 330 and the extrusion roller 350 are connected to the carrying frame through a suspension bracket, and the storage shaft 330 and the extrusion roller 350 both rotate along their own axes.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A skin flora sampling device, characterized in that: It comprises a liquid supply mechanism (100), a rotation mechanism (200) and a sampling mechanism (300); The liquid supply mechanism (100) comprises a liquid supply cylinder (110) and a pressure relief tank (120); During operation, a driving force is transmitted to the liquid supply cylinder (110) so that the sampling mechanism (300) applies pressure to the skin. When the driving force exceeds a threshold value, the medium in the liquid supply cylinder (110) is input into the rotary mechanism (200), and the rotary mechanism (200) drives the sampling mechanism (300) to sample the skin flora. When the sampling pressure applied to the skin by the sampling mechanism (300) exceeds a threshold value, the medium partially enters the pressure relief tank (120); The liquid supply mechanism (100) further includes a liquid supply diverter (130) and a drive one-way valve (150); The liquid supply diverter (130) is in communication with the liquid supply cylinder (110); both ends of the drive one-way valve (150) are in communication with the rotary mechanism (200) and the liquid supply diverter (130) respectively, so as to form a drive branch circuit; When the driving force applied to the liquid supply cylinder (110) is greater than a threshold value, the driving one-way valve (150) is opened under the push of the medium, and the medium in the liquid supply cylinder (110) flows sequentially through the liquid supply diverter (130) and the driving one-way valve (150) and enters the rotary mechanism (200); The liquid supply mechanism (100) further includes a pressure relief one-way valve (140); The two ends of the pressure relief one-way valve (140) are respectively connected to the pressure relief tank (120) and the liquid supply diverter (130) to form a pressure relief branch circuit; When the sampling pressure applied to the skin by the sampling mechanism (300) exceeds a threshold value, the pressure relief one-way valve (140) is opened under the push of the medium, and part of the medium passing through the liquid supply diverter (130) enters the pressure relief tank (120) through the pressure relief one-way valve (140).

2. The skin flora sampling device according to claim 1, characterized in that: The pressure relief one-way valve (140) and the driving one-way valve (150) both comprise a valve body (101), a one-way valve plug (102), a pressure regulating spring (103), a valve cover (104), a double-headed piston (105), and a telescopic joint (106); The valve body (101) is sleeved on the one-way valve plug (102) and is slidably connected to the one-way valve plug (102); one end of the one-way valve plug (102) abuts against the valve body (101) for sealing, and the other end abuts against the pressure-regulating spring (103); the end of the pressure-regulating spring (103) facing away from the one-way valve plug (102) abuts against the double-headed piston (105); The valve cover (104) is fitted onto the valve body (101) and is threadedly connected to the double-headed piston (105); both ends of the double-headed piston (105) are respectively plugged into the valve body (101) and the telescopic joint (106), and are slidably connected to the valve body (101) and the telescopic joint (106); The double-headed piston (105) rotates along the valve cover (104) to change the distance between the one-way valve plug (102) and the double-headed piston (105), thereby changing the pre-compression amount of the pressure-regulating spring (103).

3. The skin flora sampling device according to claim 2, characterized in that: The rotary mechanism (200) comprises a rotary shaft (210), a rotary cylinder (220), a translation piston (230), and a rotary pin (240); The rotary shaft (210) is inserted into the rotary drum (220) and is rotationally connected to the rotary drum (220); The translation piston (230) is sleeved on the rotary shaft (210) and is slidably connected to the rotary shaft (210); A rotation groove (211) is formed on the outer surface of the rotation shaft (210); One end of the rotary pin (240) is connected to the translation piston (230), and the other end is inserted into the rotary groove (211); The liquid supply cylinder (110) injects a medium into the rotary cylinder (220) to move the translation piston (230) along the rotary cylinder (220). The translation piston (230) drives the rotary pin (240) to move along the rotary groove (211), thereby driving the rotary shaft (210) to rotate.

4. The skin flora sampling device according to claim 3, characterized in that: The sampling mechanism (300) comprises a support shaft (310), a collection belt (320), a storage shaft (330) and an extrusion roller (350); The storage shaft (330) is transmission-connected to the rotary shaft (210) via a synchronization component; One end of the collecting roll (320) is connected to the support shaft (310) and wound around the support shaft (310), and the other end is connected to the storage shaft (330); The squeezing roller (350) is located between the supporting shaft (310) and the receiving shaft (330), and abuts against the side of the collecting belt (320) away from the skin; During operation, the portion of the collecting tape (320) between the supporting shaft (310) and the squeezing roller (350) comes into contact with the skin under the action of the sampling pressure, and the rotating shaft (210) drives the receiving shaft (330) to rotate through the synchronous component, so that the collecting tape (320) is partially wound around the receiving shaft (330), thereby driving the skin flora sampling device to move along the skin, and the skin flora is collected during the movement of the collecting tape (320).

5. The skin flora sampling device according to claim 4, characterized in that: The sampling mechanism (300) further includes an overhead roller (340); The overhead roller (340) is sleeved on the support shaft (310); The outer diameter of the overhead roller (340) is greater than the outer diameter of the collection tape (320) wound on the storage shaft (330); During operation, the overhead roller (340) comes into contact with the skin under the action of sampling pressure, so that the extrusion roller (350) drives the collection belt (320) to make contact with the skin line, and the storage shaft (330) drives the overhead roller (340) to rotate, thereby driving the skin flora sampling device to move along the skin. During this process, the collection belt (320) slides along the skin.

6. The skin flora sampling device according to claim 5, characterized in that: The collection roll (320) includes a base tape (321), a collection layer (322) and an adhesive tape (323); The collection layer (322) and the adhesive tape (323) are mounted on the side of the base tape (321) facing the skin, and are alternately arranged along the length direction of the base tape (321); When the collecting roll (320) is wound onto the receiving shaft (330), the adhesive tape (323) adheres two adjacent layers of the base tape (321) to form a sealed cavity, and the sealed cavity accommodates the collecting layer (322).

7. The skin flora sampling device according to claim 6, characterized in that: The storage shaft (330) comprises a storage rod (331) and a storage sleeve (332); The storage rod (331) is detachably connected to the storage sleeve (332); The collecting belt (320) is connected to the storage rod (331).

8. The skin flora sampling device according to claim 7, characterized in that: The sampling mechanism (300) further includes a belt-breaking knife (380); The belt-breaking knife (380) is located on the front side of the storage shaft (330); After the adhesive tape (323) is adhered to the base tape (321), the base tape (321) is subsequently brought into contact with the tape-breaking knife (380) to break the base tape (321).

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