Auxiliary nasopharynx swab sampling device

Abstract

The nasopharynx swab sampling auxiliary device comprises a base, a chair, a pushing mechanism, a jaw jacking mechanism and a sampling mechanism, through the combination of the chair and the pushing mechanism, the distance between the top jaw mechanism and the chair and the distance between the sampling mechanism and the chair are flexibly adjusted, and a patient can conveniently enter and exit from the chair; the jaw jacking mechanism jacks the lower jaw of a patient from bottom to top through stretching and retracting of the first supporting rod, the patient is assisted in keeping the posture that the head leans backwards, and nasopharynx swab sampling operation can be conducted smoothly. The operation of sampling the nasopharynx swab is realized by the sampling mechanism; the driving part A drives the whole poking mechanism to rotate, so that the swab rod can be quickly adjusted to be in an inclined upward direction and an inclined downward direction to respectively meet the sampling requirements of a nose swab and a throat swab; the method can be realized without different complex structures; according to the poking mechanism, the swab rod can be rapidly disassembled, rapidly installed and clamped through the cooperation of the clamping screw tube and the screwing nut, and medical staff do not need to hold the swab rod by hand for operation.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and particularly relates to a nasopharyngeal swab sampling assistance device. Background Art

[0002] Nasopharyngeal swab sampling is a detection method for collecting samples from the nasal cavity and pharynx, and is commonly used for detecting pathogens such as viruses and bacteria. Sampling personnel need to undergo professional training, be familiar with the sampling process and operation specifications, and wear personal protective equipment, including work clothes, disposable hats, medical protective masks, goggles or protective face shields, disposable gloves, isolation gowns, etc. The person to be sampled needs to understand the sampling process in advance, relax, and avoid excessive tension.

[0003] The body position for sampling is adjusted as follows: Let the person to be sampled sit on a chair, keep the head upright, and lean slightly backward. The sampling personnel stand directly in front of or on the side of the person to be sampled. Among them, the nasal cavity sampling operation is: gently insert the nasopharyngeal swab into one nostril, slowly penetrate along the bottom of the nasal cavity until reaching the nasopharynx. Stay in the nasopharynx for a few seconds, and gently rotate the swab to collect sufficient samples. Note that the action should be gentle to avoid damaging the nasal mucosa due to excessive force; the pharyngeal sampling operation is: after removing the nasopharyngeal swab from the nasal cavity, then insert the swab into the oral cavity and gently wipe the posterior pharyngeal wall, tonsils and other parts to collect pharyngeal samples. Similarly, the swab stays in the pharynx for a few seconds to ensure that sufficient cells and secretions are collected.

[0004] The existing above operations are usually manually operated by medical staff throughout the process, and the person being sampled actively cooperates to maintain the body position of leaning backward. Such a situation usually has the following problems: 1. When the person being sampled performs the head backward operation by themselves, the backward position is often not in place, resulting in the need for medical staff to give guidance and manual assistance, increasing the risk of infection for medical staff and consuming time; 2. Medical staff have many working steps and a large labor intensity, and are prone to fatigue after working for a long time; 3. The position and angle adjustment of the swab rod are not convenient, resulting in the inability to accurately reach the nasopharynx of the person being sampled;

[0005] Therefore, there is a need to provide a nasopharyngeal swab sampling assistance device to assist the person being sampled to maintain a suitable body position, save the physical strength of the sampler, and reduce the infection risk for the person being sampled and the sampler. Summary of the Invention

[0006] In order to solve the above technical problems, the present invention provides a nasopharyngeal swab sampling assistance device, which is designed in terms of the structure for assisting the person being sampled to lean backward and reducing the physical labor of the sampler; a jaw-lifting mechanism is arranged in front of the patient to assist the patient to lean backward by lifting the lower jaw; a pushing mechanism is provided to adapt to patients of different body types; the insertion and rotation operations of the swab rod are completed through a sampling mechanism;

[0007] To achieve the above technical objectives, the present invention is realized through the following technical solutions:

[0008] A nasopharyngeal swab sampling assistance device, comprising: a base, a chair, a pushing mechanism, a jaw-top mechanism, and a sampling mechanism;

[0009] The chair is fixedly installed on one side of the base; the jaw-top mechanism and the sampling mechanism are both slidably installed on the other side of the base; the pushing mechanism includes an upper pushing rod and a lower pushing rod that are parallel up and down; the upper pushing rod drives the sampling mechanism to slide through telescoping; the lower pushing rod drives the jaw-top mechanism to slide through telescoping; the jaw-top mechanism is located between the chair and the sampling mechanism;

[0010] The jaw-top mechanism includes a support rod A and a jaw-top plate; the jaw-top plate is rotatably installed at the top of the support rod; the jaw-top plate is a plate-like structure adapted to the anatomical structure of the human mandible;

[0011] The sampling mechanism includes a support rod B, an adjustment mechanism, and an insertion mechanism; the adjustment mechanism includes a slide rail, a driving member A, and a push rod; the slide rail is rotatably connected to the top of the support rod B and rotates relative to the support rod B under the drive of the driving member A; the insertion mechanism is slidably installed on the slide rail, is pushed by the push rod to slide, and rotates with the slide rail;

[0012] The insertion mechanism includes a slider, a driving member B, an insertion rod, a clamping screw tube, and a tightening nut; the insertion rod is rotatably connected to the slider, and the bottom end is fixedly connected to the driving member B and rotates relative to the slider under the drive of the driving member B; the clamping screw tube is fixedly connected to the top end of the insertion rod and is angled with the insertion rod; the tightening nut is spirally sleeved in the clamping screw tube;

[0013] Furthermore, a telescopic rod is fixedly installed above the backrest of the chair, and a head cushion plate is rotatably installed at the top end of the telescopic rod; there is a rotational damping between the head cushion plate and the telescopic rod; a vertically penetrating hollow is provided in the middle of the seat surface of the chair; the hollow is located at one end of the chair close to the sampling mechanism;

[0014] Furthermore, both the upper pushing rod and the lower pushing rod are rods that telescope in the horizontal direction, one end is commonly fixed to the end of the base opposite to the chair, and the other end extends and telescopes towards the chair direction; the end of the upper pushing rod is fixedly connected to the outer wall of the support rod B; the end of the lower telescopic rod passes through the support rod B and is fixedly connected to the outer wall of the support rod A;

[0015] Furthermore, a torsion spring shaft is fixedly connected to the top end of the support rod A; the jaw-top plate and the support rod A are rotatably connected through the torsion spring shaft;

[0016] Furthermore, the track direction of the slide rail is perpendicular to the telescopic direction of the second support rod; the middle part of the slide rail is penetrated; both ends of the slide rail are closed and fixedly connected with a circular shaft respectively; the top end of the second support rod is fixedly connected with a U-shaped rod; both sides of the top end of the U-shaped rod are fixedly connected with a coaxial rotating seat respectively; the first driving member is fixedly installed outside the two rotating seats, and the output end is fixedly connected with the circular shaft and drives the slide rail to rotate through the output rotary motion;

[0017] Furthermore, a U-shaped seat is fixedly connected between the two circular shafts, and the bottom end of the U-shaped seat is a straight rail; the track of the straight rail is parallel to the slide rail;

[0018] Furthermore, the push rod is a telescopic rod, one end of which is fixedly connected to one of the circular shafts, and the other end is fixedly connected to one side of the slider; the inserting rod is a telescopic rod, which passes through the slider and rotates inside the slider; the bottom end of the inserting rod is fixedly connected to the output end of the second driving member; the second driving member outputs a rotary motion and the bottom end slides linearly on the straight rail;

[0019] Furthermore, the bottom of the clamping screw tube is an external threaded column, and the top is provided with a plurality of clamping plates that are inclined inward and arranged circumferentially; there are gaps between the plurality of clamping plates; both ends of the tightening nut penetrate through, the bottom is an internal threaded tube that is spirally sleeved with the external threaded column, and the top is provided with a plurality of circular pressing plates with inward narrow openings; when the tightening nut is screwed towards the bottom of the clamping screw tube, the circular pressing plates press the plurality of clamping plates from top to bottom;

[0020] The beneficial effects of the present invention are as follows:

[0021] Compared with the traditional method of medical staff holding the swab rod by hand and guiding the patient to tilt the head back and manually insert and rotate the swab rod, the nasopharyngeal swab sampling assistance device provided by the present invention realizes, through mechanical structure design, assisting the patient to maintain the head-tilted-back posture required for nasopharyngeal swab sampling, and realizes the angle adjustment, insertion and rotation operations of the swab rod through mechanical structures; specifically:

[0022] Through the combination of the chair and the pushing mechanism, when in use, first shorten the upper push rod and the lower push rod in the pushing mechanism, so that the jaw pushing mechanism and the sampling mechanism are far away from the chair, which is convenient for the patient to sit down or after sitting down, the upper push rod and the lower push rod extend, and push the jaw pushing mechanism and the sampling mechanism to the front of the patient for work;

[0023] The jaw-supporting mechanism supports the patient's lower jaw from bottom to top through the extension and retraction of the support rod A, thereby assisting the patient in maintaining a head-tilted posture and body position, and facilitating the smooth operation of nasopharyngeal swab sampling; the operation of nasopharyngeal swab sampling is all realized by the sampling mechanism; the driving member A drives the stabbing mechanism to rotate as a whole, and can quickly adjust the swab rod to an oblique upward and oblique downward direction, respectively adapting to the sampling requirements of nasal swabs and pharyngeal swabs; it does not need to be realized through different complex structures; the stabbing mechanism can quickly disassemble and quickly install and clamp the swab rod through the cooperation of the clamping screw and the tightening nut, and medical staff do not need to hold the swab rod for operation;

[0024] The poking rod and driving member B in the poking mechanism respectively drive the swab rod to perform poking and rotating operations, which can fully simulate the poking into the deep nasopharynx and rotating operations required for artificial nasopharyngeal swab sampling.

[0025] This device replaces the manual operation of traditional nasopharyngeal swab sampling through the mechanical combination and linkage of the above-mentioned structures, and completes the alignment, insertion and rotation of the swab rod by controlling the extension and retraction of each rod and the operation of drive part A and drive part B, thereby performing sufficient and effective sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention from one perspective;

[0028] Figure 2 is a side view of the present invention from one viewing angle;

[0029] Figure 3 It is a schematic diagram of the overall structure of the present invention from another perspective;

[0030] Figure 4 The present invention Figure 3 A schematic cross-sectional structure diagram of ;

[0031] Figure 5 is a structural schematic diagram of the stabbing mechanism of the present invention;

[0032] Figure 6 The present invention Figure 1 A schematic diagram of the enlarged local structure at point A in the middle;

[0033] Figure 7 The present invention Figure 4Schematic diagram of the enlarged partial structure at B in

[0034] Figure 8 of the present invention Figure 4 Schematic diagram of the enlarged partial structure at C in

[0035] Figure 9 of the present invention Figure 5 Cross-sectional structure schematic diagram of

[0036] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0037] 1 - Base

[0038] 2 - Chair, 201 - Telescopic rod, 202 - Head cushion plate, 203 - Hollow out

[0039] 3 - Pushing mechanism, 301 - Upper pushing rod, 302 - Lower pushing rod

[0040] 4 - Maxillofacial pressing mechanism, 401 - Support rod A, 402 - Maxillofacial pressing plate, 403 - Torsion spring shaft

[0041] 5 - Sampling mechanism, 501 - Support rod B, 504 - U-shaped rod, 505 - Rotating seat

[0042] 502 - Position adjusting mechanism, 5021 - Slide rail, 5022 - Driving part A, 5023 - Push rod, 5024 - Round shaft, 5025 - U-shaped seat, 5026 - Straight rail

[0043] 503 - Inserting mechanism, 5031 - Slide block, 5032 - Driving part B, 5033 - Inserting rod

[0044] 6 - Clamping screw tube, 601 - External thread column, 602 - Clamping plate

[0045] 7 - Tightening nut, 701 - Internal thread tube, 702 - Round pressing plate Specific embodiments

[0046] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0047] Embodiment 1

[0048] Please refer to Figures 1 - 9, in this embodiment, a nasopharyngeal swab sampling assistance device includes: a base 1, a chair 2, a pushing mechanism 3, a jaw pushing mechanism 4, and a sampling mechanism 5; the base 1 is the basic support mechanism of the device. To improve the overall portability of the device, universal wheels with brakes can be fixedly installed on the lower surface of the base 1 to freely move the device and position it by braking the universal wheels after movement; the chair 2 is the mechanism for the patient to sit on. The specific structure of the chair is a mature technical means in the prior art. The device can directly use the structure of the existing chair and fixedly install the chair on the base 1. After the patient sits down, the sampling of the nasopharyngeal swab is realized through the cooperation of the pushing mechanism 3, the jaw pushing mechanism 4, and the sampling mechanism 5.

[0049] In this embodiment, the chair 2 is fixedly installed on one side of the base 1; the jaw pushing mechanism 4 and the sampling mechanism 5 are both slidably installed on the other side of the base 1; the pushing mechanism 3 includes an upper pushing rod 301 and a lower pushing rod 302 that are parallel up and down; the upper pushing rod 301 drives the sampling mechanism 5 to slide through telescoping; the lower pushing rod 302 drives the jaw pushing mechanism 4 to slide through telescoping; the jaw pushing mechanism 4 is located between the chair 2 and the sampling mechanism 5; the function and purpose of the pushing mechanism 3 of this device are to respectively push the jaw pushing mechanism 4 and the sampling mechanism 5 to slide in two directions, towards and away from the human body; when away from the human body, it is convenient for the user to sit on the chair, and when close to the human body, the sampling operation is carried out; both the upper pushing rod 301 and the lower pushing rod 302 are rods that linearly expand and contract in the horizontal direction and can be fixed in length after expansion and contraction. The specific structure is a mature technical means in the prior art. Those skilled in the art can flexibly select rods that automatically control expansion and contraction, including electric push rods, hydraulic rods, pneumatic push rods, etc., from their functions of horizontal expansion and contraction and being fixed in length after expansion and contraction.

[0050] In this embodiment, the mandible lifting mechanism 4 includes a support rod A 401 and a mandible lifting plate 402; the mandible lifting plate 402 is rotatably installed at the top of the support rod A 401; the mandible lifting plate 402 is a plate-like structure adapted to the anatomical structure of the human mandible; the function of the mandible lifting mechanism 4 can be directly understood from its literal meaning, which is a mechanism that lifts the user's mandible upward in a sitting state; specifically, the component in direct contact with the user's mandible is the mandible lifting plate 402. The mandible lifting plate 402 shown in the drawings in this specification is a display of its position and connection relationship, and does not limit it to only the arc plate shown in the figure. Its specific shape is a plate-like structure adapted to the anatomical structure at the human mandible, with stable structure and can cover the lower part of the mandible from bottom to top; the mandible lifting plate 402 is rotatably connected to the support rod A 402 to rotate due to the change in the mandible angle when lifting the user's mandible, improving comfort; a relatively small rotational damping can be set for the rotational connection between the mandible lifting plate 402 and the support rod A 402, so that when using it again after use, the mandible lifting plate 402 can quickly return to the initial state without manual operation again;

[0051] In this embodiment, the sampling mechanism 5 includes a support rod B 501, an adjustment mechanism 502, and an insertion mechanism 503; the adjustment mechanism 502 includes a slide rail 5021, a driving member A 5022, and a push rod 5023; the slide rail 5021 is rotatably connected to the top of the support rod B 501 and rotates relative to the support rod B 501 under the drive of the driving member A 5022; the insertion mechanism is slidably installed on the slide rail 5021, slides under the push of the push rod 5023, and rotates with the slide rail 5021; the sampling mechanism 5 is the mechanism in this device that directly performs nasopharyngeal swab sampling. The swab rod is aligned with the human nasopharynx through the support rod B 501 and the adjustment mechanism 502, and finally the insertion mechanism 503 performs insertion and sampling;

[0052] In this embodiment, the insertion mechanism 503 includes a slider 5031, a driving member B 5032, an insertion rod 5033, a clamping screw tube 6, and a tightening nut 7; the insertion rod 5033 is rotatably connected to the slider, and the bottom end is fixedly connected to the driving member B 5032 and rotates relative to the slider under the drive of the driving member B 5032; the clamping screw tube 6 is fixedly connected to the top of the insertion rod 5033 and forms an angle with the insertion rod 5033; the tightening nut 7 is spirally sleeved inside the clamping screw tube 6; the insertion mechanism 503 includes two mechanical actions, one is the clamping of the swab rod for sampling, and the other is driving the swab rod to insert into the nostril or pharynx; the clamping of the swab rod is realized through the clamping screw tube 6 and the tightening nut, and manual operation is required; the insertion rod 5033 is a linear telescopic and fixed-length rod after telescoping, and it needs to be a rod that can be automatically controlled for telescoping, such as an electric push rod, a hydraulic rod, a pneumatic push rod, etc.

[0053] In this embodiment, a telescopic rod 201 is fixedly installed above the backrest of the chair 2, and a head cushion plate 202 is rotatably installed at the top end of the telescopic rod 201; there is a rotational damping between the head cushion plate 202 and the telescopic rod 201; a hollow 203 penetrating up and down is formed in the middle of the seat surface of the chair 2; the hollow 203 is located at one end of the chair 2 close to the sampling mechanism 5;

[0054] In this embodiment, both the upper push rod 301 and the lower push rod 302 are rods that can be telescoped in the horizontal direction. One end of each of them is commonly fixed to one end of the base 1 opposite to the chair 2, and the other end extends and can be telescoped towards the chair 2; the end of the upper push rod 301 is fixedly connected to the outer wall of the support rod B 501; the end of the lower push rod 302 passes through the support rod B 501 and is fixedly connected to the outer wall of the support rod A 401;

[0055] In this embodiment, a torsion spring shaft 403 is fixedly connected to the top end of the support rod A 401; the top jaw plate 402 is rotatably connected to the support rod A 401 through the torsion spring shaft 403; the torsion spring shaft 403 is the above-mentioned rotational damping between the support rod A 401 and the top jaw plate 402. By setting the damping, the state can be quickly restored after the top jaw mechanism is used;

[0056] In this embodiment, the track direction of the slide rail 5021 is perpendicular to the telescopic direction of the support rod B 501; the middle of the slide rail 5021 is penetrated; both ends of the slide rail 5021 are closed and respectively fixedly connected with a circular shaft 5024; the top end of the support rod B 501 is fixedly connected with a U-shaped rod 504; both sides of the top end of the U-shaped rod 504 are respectively fixedly connected with a coaxial rotating seat 505; the driving member A 5022 is fixedly installed outside the two rotating seats 505, and the output end is fixedly connected with the circular shaft 5024, and drives the slide rail 5021 to rotate by outputting a rotary motion; the rotation of the slide rail 5021 is used to adjust the angle of the insertion mechanism in one direction;

[0057] In this embodiment, a U-shaped seat 5025 is fixedly connected between the two circular shafts 5024, and the bottom end of the U-shaped seat 5025 is a straight rail 5026; the track of the straight rail 5026 is parallel to the slide rail 5021; the U-shaped seat 5025 is used to limit the insertion rod so that the insertion rod slides relative to the slide rail 5021;

[0058] In this embodiment, the push rod 5023 is a telescopic rod, one end of which is fixedly connected to one of the circular shafts 5024, and the other end is fixedly connected to one side of the slider; the piercing rod 5033 is a telescopic rod, which passes through the slider and rotates inside the slider; the bottom end of the piercing rod 5033 is fixedly connected to the output end of the driving member B 5032; the driving member B 5032 outputs a rotary motion and the bottom end is;

[0059] In this embodiment, the bottom of the clamping screw 6 is an external thread column 601, and the top is a plurality of clamping plates 602 that are inclined inward and arranged circumferentially; there is a gap between the plurality of clamping plates 602; the tightening nut 7 passes through both ends, the bottom is an internal thread tube 701 that is spirally sleeved with the external thread column 601, and the top is a plurality of circular pressure plates 702 with narrow inward openings; when the tightening nut 7 is screwed toward the bottom of the clamping screw 6, the circular pressure plates 702 press the plurality of clamping plates 602 from top to bottom; the specific structure of this part is detailed in the specification. Figure 7 ;

[0060] In this embodiment, the specific use process of a nasopharyngeal swab sampling auxiliary device is as follows:

[0061] The device is assembled and installed according to the diagram and the above text records, and cleaned and disinfected before use. The upper push rod 301 and the lower push rod 302 are controlled to retract to adjust the top jaw mechanism 4 and the sampling mechanism 5 to the end of the base 1 away from the chair 2; the sampled person sits on the chair 2 with his back against the backrest of the chair 2, and the head of the sampled person is cushioned on the head pad 202 by controlling the extension and retraction of the telescopic rod 201; first, the lower push rod 302 and the support rod A 401 are started, and the extension and retraction are controlled to make the top jaw plate 402 reach below the patient's lower jaw and rise from bottom to top, so as to assist the patient to keep his head tilted back;

[0062] Start the upper push rod 301 and the support rod B 501, and control the extension and retraction so that the sampling mechanism 5 reaches a suitable position in front of the patient's neck in height and position; screw down the tightening nut 7, and insert the swab rod between the clamping plates 602, and then screw on the tightening nut 7, and fix the swab rod with B; then start the driving member A 5022 and the push rod 5023, move the swab rod to align with the patient's nasopharyngeal swab, and then start the insertion rod 5033 to extend and the driving member B 5032 to output the rotary motion, insert the swab rod into the nasopharynx and rotate it, and after sampling, retract the telescopic rod to take out the swab rod to complete the sampling.

[0063] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. An auxiliary device for nasopharyngeal swab sampling, characterized in that, Including: A base, a chair, a pushing mechanism, a jaw pressing mechanism, and a sampling mechanism; The chair is fixedly installed on one side of the base; both the jaw pressing mechanism and the sampling mechanism are slidably installed on the other side of the base; the pushing mechanism includes an upper pushing rod and a lower pushing rod that are parallel up and down; the upper pushing rod drives the sampling mechanism to slide through telescoping; the lower pushing rod drives the jaw pressing mechanism to slide through telescoping; the jaw pressing mechanism is located between the chair and the sampling mechanism; The jaw pressing mechanism includes a support rod A and a jaw pressing plate; the jaw pressing plate is rotatably installed at the top end of the support rod; the jaw pressing plate is a plate-like structure adapted to the anatomical structure of the human mandible; The sampling mechanism includes a support rod B, an adjustment mechanism, and an insertion mechanism; the adjustment mechanism includes a slide rail, a driving member A, and a push rod; the slide rail is rotatably connected to the top end of the support rod B and rotates relative to the support rod B under the drive of the driving member A; the insertion mechanism is slidably installed on the slide rail, is pushed by the push rod to slide, and rotates with the slide rail; The insertion mechanism includes a slider, a driving member B, an insertion rod, a clamping screw tube, and a tightening nut; the insertion rod is rotatably connected to the slider, and the bottom end is fixedly connected to the driving member B and rotates relative to the slider under the drive of the driving member B; the clamping screw tube is fixedly connected to the top end of the insertion rod and is angled with the insertion rod; the tightening nut is spirally sleeved inside the clamping screw tube.

2. The auxiliary device for nasopharyngeal swab sampling according to claim 1, characterized in that An expansion rod is fixedly installed above the backrest of the chair, and a head cushion plate is rotatably installed at the top end of the expansion rod; there is a rotational damping between the head cushion plate and the expansion rod; a hollow is provided in the middle of the seat surface of the chair and penetrates up and down; the hollow is located at one end of the chair close to the sampling mechanism.

3. The auxiliary device for nasopharyngeal swab sampling according to claim 1, wherein Both the upper pushing rod and the lower pushing rod are rods that can be telescoped in the horizontal direction, with one end commonly fixed to the end of the base opposite to the chair, and the other end extending and telescoping towards the chair; the end of the upper pushing rod is fixedly connected to the outer wall of the support rod B; the end of the lower expansion rod passes through the support rod B and is fixedly connected to the outer wall of the support rod A.

4. The auxiliary device for nasopharyngeal swab sampling according to claim 1, characterized in that, A torsion spring shaft is fixedly connected to the top end of the support rod A; the jaw pressing plate and the support rod A are rotatably connected through the torsion spring shaft.

5. The auxiliary device for nasopharyngeal swab sampling according to claim 1, wherein The trajectory direction of the slide rail is perpendicular to the telescoping direction of the support rod B; the middle of the slide rail penetrates; the two ends of the slide rail are closed and respectively fixedly connected with a circular shaft; the top end of the support rod B is fixedly connected with a U-shaped rod; both sides of the top end of the U-shaped rod are respectively fixedly connected with a coaxial rotating seat; the driving member A is fixedly installed outside the two rotating seats, and the output end is fixedly connected with the circular shaft and drives the slide rail to rotate through output rotary motion.

6. The auxiliary device for nasopharyngeal swab sampling according to claim 5, wherein, A U-shaped seat is fixedly connected between the two circular shafts, and the bottom end of the U-shaped seat is a straight rail; the trajectory of the straight rail is parallel to the slide rail, and the driving member B slides on the straight rail.

7. The auxiliary device for nasopharyngeal swab sampling according to claim 5, characterized in that, The push rod is a telescopic rod, one end of which is fixedly connected to one of the round shafts, and the other end is fixedly connected to one side of the slider; the insertion rod is a telescopic rod, which passes through the slider and rotates within the slider; the bottom end of the insertion rod is fixedly connected to the output end of the driving member B; the driving member B outputs a rotary motion.

8. The nasopharyngeal swab sampling assistance device according to claim 5, wherein, The bottom of the clamping screw tube is an external thread column, and the top is provided with a plurality of clamping plates that are inclined inward and arranged circumferentially; there are gaps between the plurality of clamping plates; both ends of the tightening nut penetrate through, the bottom is an internal thread tube that is helically sleeved with the external thread column, and the top is provided with a plurality of round pressing plates with inward narrow openings; when the tightening nut is screwed towards the bottom of the clamping screw tube, the round pressing plates press the plurality of clamping plates from top to bottom.

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