CN118593095B

CN118593095B - A nasal foreign body remover

Info

Publication number: CN118593095B
Application number: CN202410738898.6A
Authority: CN
Inventors: 张君
Original assignee: Fourth Military Medical University FMMU
Current assignee: Fourth Military Medical University FMMU
Priority date: 2024-06-07
Filing date: 2024-06-07
Publication date: 2024-11-22
Anticipated expiration: 2044-06-07
Also published as: CN118593095A

Abstract

The present invention discloses a nasal foreign body extractor, comprising a gripping rod, at least two inserts, a storage head, a capsule bag, a first liquid delivery assembly and an electromagnet, a mounting plate is fixed on the outer wall of the gripping rod, a first arc-shaped notch is provided on the plate surface of the mounting plate, each insert is slidably connected with the first arc-shaped notch through a sliding assembly, each insert extends along the length direction of the gripping rod, and an infusion channel is provided in the insert; the storage head is a flat structure, the flat surface extends along the length direction of the gripping rod, the storage head is fixed at the front end of the insert, and a storage groove is provided on the side wall of the storage head facing the center of the nasal cavity; the capsule bag is arranged in the storage groove; the first liquid delivery assembly is connected with the capsule bag through the infusion channel; the electromagnet is used to generate magnetic force to convert the magnetorheological fluid in the capsule bag after expansion into a solid-like form to hook the foreign body. The present invention removes the foreign body by hooking it out from the rear side of the foreign body, which can improve the accuracy and speed of removing the foreign body.

Description

Nasal foreign body extractor

Technical Field

The invention relates to the technical field of medical equipment, in particular to a nasal foreign body extractor.

Background

The nasal foreign matter refers to a substance which enters the nasal cavity from outside the nasal cavity and stays in the nasal cavity, and the nasal foreign matter is generally classified into non-biological foreign matter, plant foreign matter and animal foreign matter. Nasal cavity foreign matter is more common in children patient, and its in-process of playing is carelessly with the foreign matter in the nasal cavity, and the foreign matter can lead to infant dyspnea, consequently needs in time take out.

The nasal cavity foreign matter taking out mode generally adopts modes such as nasal cavity foreign matter pincers, the foreign matter that blocks the nasal cavity often is smooth on the surface and large-scale structure, when adopting nasal cavity foreign matter pincers or tweezers to take out, because the gap size position that forms between foreign matter and the nasal cavity exists differently, both sides jaw portion is difficult to open and stretches into the gap simultaneously and accomplish to press from both sides and get, the degree of difficulty of taking out is big, moreover, the foreign matter surface is smooth, jaw portion is difficult to stably attach on the surface of foreign matter when openly pressing from both sides to get, consequently, slipping phenomenon appears easily, difficult to once only successfully take out, thereby can prolong the take-out time, simultaneously because infant's age is less, take-out in-process can cry and alarm influence the process of pressing from both sides, and the time of crying of extension can increase children certainly, make it be difficult to keep steadily at the in-process of taking out, push into nasal cavity deep with the foreign matter easily, even fall into pharyngeal cavity trachea, cause serious result.

Disclosure of Invention

The invention aims to provide a nasal cavity foreign body extractor, which solves the problem that in the prior art, foreign bodies are difficult to rapidly and accurately extract from the nasal cavity of an infant.

The technical scheme of the invention is as follows:

A nasal foreign body extractor, which comprises a holding rod, at least two inserting sheets, a containing head, a bag, a first liquid conveying component and an electromagnet; the outer wall of the holding rod is fixedly sleeved with a mounting plate, and a first arc-shaped notch coaxially arranged with the holding rod is formed in the surface of the mounting plate; each inserting piece is in sliding connection with the first arc-shaped notch through a sliding assembly, and extends along the length direction of the holding rod; infusion channels are arranged in each insert; the storage head is of a flat structure, the flat surface of the storage head extends along the length direction of the holding rod, the storage head is fixed at the front end of the inserting piece, and a storage groove is formed in the side wall of the storage head, facing the center of the nasal cavity; the bag is arranged in the containing groove; the first liquid conveying component is communicated with the bag through the infusion channel and is used for conveying magnetorheological fluid into the bag to expand the bag after the containing head passes through the foreign matters; the electromagnet is used for generating magnetic force to enable magnetorheological fluid in the bag after expansion to be converted into a quasi-solid form to hook the foreign matters.

Preferably, as a further improvement of the present invention, the sliding assembly includes an arc-shaped seat, an arc-shaped sliding block and a lock nut; the arc-shaped seat is fixed on the side wall of the mounting plate, a second arc-shaped notch with a T-shaped cross section is formed in the arc-shaped seat, the second arc-shaped notch is opposite to the first arc-shaped notch, the inserting sheet is arranged in the second arc-shaped notch in a penetrating mode, and external threads are arranged on the outer wall of the inserting sheet; the arc-shaped sliding block is sleeved and fixed on the inserting piece and is in sliding connection with the second arc-shaped notch; the lock nut is in threaded connection with the inserting sheet and is positioned at the rear side of the mounting plate.

Preferably, as a further improvement of the present invention, the central angle of the first arc-shaped notch and the central angle of the second arc-shaped notch are both 240 degrees, and the inserting piece has three.

Preferably, as a further improvement of the present invention, the first liquid delivery assembly includes a first delivery tube, a first pump body, and a valve; one end of the first conveying pipe is communicated with the infusion channel; the output end of the first pump body is connected with the other end of the first conveying pipe, and the input end of the first pump body is connected with an external storage vessel for storing magnetorheological fluid through a liquid suction pipe; the valve is arranged on the first conveying pipe and is used for opening or closing the first conveying pipe.

Preferably, as a further improvement of the invention, the front side of the holding rod is provided with a mounting block, the side wall of the mounting block opposite to the holding rod is provided with a mounting groove, the electromagnet is fixed in the mounting groove, a linear moving assembly is arranged between the rear end of the mounting block and the holding rod, and the linear moving assembly is used for driving the mounting block to extend into the nasal cavity.

Preferably, as a further improvement of the invention, the linear movement assembly comprises a threaded rod, a nut seat, a limiting block and a limiting groove; the threaded rod is arranged in the mounting hole in a penetrating way, the mounting hole is horizontally arranged in the holding rod, one end of the threaded rod extends to the front side of the mounting plate and is fixed with the side wall of the mounting block through the connecting rod, and the other end of the threaded rod extends out of the holding rod; the nut seat is rotationally connected with the rear end of the holding rod through a bearing, and is in threaded connection with the threaded rod; the limiting block is fixed on the outer side wall of the threaded rod; the limiting groove is formed in the mounting hole, and the limiting block is in sliding connection with the limiting groove.

Preferably, as a further improvement of the invention, the mounting block is conical, the diameter of the front end is smaller than that of the rear end, a plurality of spray holes are circumferentially formed in the conical surface of the mounting block, the threaded rod is of a hollow structure, and a second liquid conveying component is arranged in the threaded rod and communicated with the spray holes and used for conveying and spraying clear water or normal saline into the spray holes.

Preferably, as a further improvement of the present invention, the second liquid delivery assembly includes a multi-way pipe, a second delivery pipe, and a second pump body; the multi-way pipe is fixed in a connecting cavity formed in the rear end face of the mounting block, the multi-way pipe is provided with an input port and a plurality of output ports, and the plurality of output ports of the multi-way pipe are respectively communicated with the plurality of spray holes in a one-to-one correspondence manner; the second conveying pipe is arranged in the threaded rod in a penetrating way, and one end of the second conveying pipe extends into the mounting block and is communicated with the input port of the multi-way pipe; the second pump body is fixed the other end of threaded rod, the output of second pump body with second conveyer pipe intercommunication, the input of second pump body is connected with the connecting pipe, the connecting pipe is used for storing clear water or normal saline device intercommunication with the external world.

Preferably, as a further improvement of the invention, an included angle alpha is formed between the spray hole and the axis of the conical block, and the included angle alpha ranges from 45 degrees to 60 degrees.

Compared with the prior art, the invention has the beneficial effects that:

1. the foreign matter is taken out from the rear side of the foreign matter in a hooking way, so that the problem that the foreign matter is difficult to take out rapidly due to slipping can be avoided compared with the way that the foreign matter is taken out by a pair of foreign matter pliers or forceps on the front side.

2. The hooking part can expand and stretch, so that the inserting sheet can not influence the process of passing through the gap between the nasal cavity and the foreign body.

3. After at least two inserting sheets pass through gaps between nasal cavities and foreign matters and move to the rear side of the foreign matters, the sliding assembly is utilized to drive the at least two inserting sheets to rotate along the first arc-shaped notch to adjust the inserting sheets to be separated from each other, the foreign matters and the inner wall of the nasal cavity can be separated in the moving process of the inserting sheets, magnetorheological fluid is injected into the bag through the first liquid conveying assembly, the magnetorheological fluid is not influenced by external magnetic force in the process, so that the magnetorheological fluid is always in a liquid state, the bag expands towards the outer side of the containing groove along with the increase of the injection amount, the part of the bag, which is positioned at the outer side of the containing groove, forms a hook head similar to a draw hook, the magnetorheological fluid in the bag is converted into a quasi-solid form by liquid through controlling the electromagnet to convert the part of the bag, which is positioned at the outer side of the containing groove, into a hard structure, and the foreign matters are hooked out towards the outer side of the nasal cavity through the hard structure.

Drawings

FIG. 1 is a schematic front view of three auxiliary clamping bars in a separated state;

FIG. 2 is a schematic diagram of the front cross-sectional structure of FIG. 1 of the present invention;

FIG. 3 is an enlarged schematic view of a portion of the invention at A in FIG. 2;

FIG. 4 is an enlarged schematic view of a portion of the invention at B in FIG. 2;

FIG. 5 is a schematic diagram of the left-hand structure of FIG. 1 according to the present invention;

FIG. 6 is a schematic view of the position of the included angle α in the present invention;

FIG. 7 is a schematic front view of three auxiliary clamping bars in the assembled state;

Fig. 8 is a schematic diagram of the left-hand structure of fig. 7 according to the present invention.

Detailed Description

The following describes embodiments of the present invention in detail with reference to fig. 1 to 8. In the description of the invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate describing the invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second" may include one or more such features, either explicitly or implicitly; in the description of the invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

Examples

As shown in fig. 1 to 8, an embodiment of the present invention provides a nasal foreign body extractor including a grip lever 1, at least two insertion pieces 2, a receiving head 3, a pouch 4, a first liquid delivery assembly, and an electromagnet 5; the outer wall of the holding rod 1 is provided with a first arc notch along the circumferential direction; each insert piece 2 is in sliding connection with the first arc-shaped notch through a sliding component, and each insert piece 2 extends along the length direction of the holding rod 1; an infusion channel is arranged in each insert piece 2; the accommodating head 3 is of a flat structure, the flat surface of the accommodating head 3 extends along the length direction of the holding rod 1, the accommodating head 3 is fixed at the front end of the inserting piece 2, and an accommodating groove 31 is formed in the side wall of the accommodating head 3 facing the center of the nasal cavity; the bag 4 is arranged in the containing groove 31 in a shielding mode, and the top of the bag 4 is adhered and fixed with the inner top surface of the containing groove 31; the first liquid conveying component is communicated with the bag 4 through an infusion channel and is used for conveying magnetorheological fluid into the bag 4 to expand the bag 4 after the accommodating head 3 passes through the foreign matters; the electromagnet 5 is used for generating magnetic force to convert the magnetorheological fluid in the bag 4 into a quasi-solid form after expansion so as to hook the foreign matters.

In this embodiment, when the foreign bodies in the nasal cavity of the infant are taken out, referring to fig. 7 and 8, the inserting pieces 2 are gathered together, then a gap between the nasal cavity and the foreign bodies is found, then the nasal foreign bodies remover is moved to the interior of the nasal cavity of the infant through the holding rod 1, the inserting pieces 2 and the accommodating head 3 pass through the gap and move to the rear side of the foreign bodies, the moving process of the inserting pieces 2 cannot be affected because the bag 4 is contracted in the accommodating groove, when the inserting pieces 2 pass through and then the holding rod 1 is stopped, referring to fig. 1 and 5, the sliding component drives at least two inserting pieces 2 to rotate along the first arc-shaped notch 61 to adjust the positions of the inserting pieces 2, so that the at least two inserting pieces 2 are separated, the foreign bodies can be separated from the inner wall of the nasal cavity in the moving process of the inserting pieces 2, the positions of the inserting pieces 2 can be adjusted, the positions of the inserting pieces can be evenly distributed, and the subsequent stable pulling force can be applied, then the magnetorheological fluid is injected into the bag 4 through the first liquid conveying component through the infusion channel, in the process, the magnetorheological fluid is always in a liquid state because the magnetorheological fluid is not influenced by external magnetic force, the bag 4 expands towards the outer side of the containing groove 31 along with the increase of the injection amount, the part of the bag 4 positioned at the outer side of the containing groove 31 forms a hook head part similar to a drag hook, in addition, the bag 4 is soft and is attached to the surface of the foreign matter if contacting the surface of the foreign matter, after the bag contacts with the foreign matter, the first liquid conveying component is controlled to stop injecting the magnetorheological fluid, then the electromagnet 5 is controlled to be in an electrified state to generate magnetic force, the magnetic force of the electromagnet 5 can be correspondingly regulated by controlling the magnitude of current, the magnetic force generated by the electromagnet 5 can enable the magnetorheological fluid in the bag 4 to be converted into a quasi-solid form from liquid, thereby make the part that bag 4 is located the storage tank 31 outside change into the stereoplasm structure, come the nasal cavity foreign matter extractor whole to the nasal cavity outside removal through holding pole 1 this moment, the removal in-process drives the stereoplasm structure that bag 4 is located the storage tank 31 outside through inserted sheet 2 and pulls the foreign matter to the nasal cavity outside, realizes taking out the foreign matter from the foreign matter rear side adoption hook form, improves and takes out the success rate, reduces and takes out time.

Wherein, the bag 41 is made of corrosion-resistant medical silica gel material, has no irritation, toxicity, anaphylactic reaction and little organism rejection reaction to human tissues, has good physical and chemical properties, can keep the original elasticity and softness in the process of contacting body fluid and tissues, is not degraded, and is a quite stable inert substance.

Wherein, insert piece 2 is made for having elastic stereoplasm material, when passing the foreign matter and rotating, has certain elastic deformation ability to avoid stereoplasm shaft removal friction to can lead to the fact the problem of damage to the nasal cavity inner wall to appear, the shape of insert piece 2 also can be the cylinder of needle-like simultaneously, conveniently rotates, and the inside adopts hollow setting to act as the infusion passageway.

Wherein, referring to fig. 3, accomodate first 3 and be flat duckbill form, the diameter of front end to rear end increases in proper order, can be convenient for guide inserted sheet 2 from the foreign matter and the gap between the nasal cavity pass, all set up each edges and corners department of accomodating first 3 into the fillet simultaneously, avoid removal in-process edges and corners fish tail nasal cavity inner wall.

Specifically, the sliding assembly includes an arc-shaped seat 71, an arc-shaped slider 73 and a lock nut 74; the arc-shaped seat 71 is fixed on the side wall of the mounting plate 2, a second arc-shaped notch 72 with a T-shaped cross section is formed in the arc-shaped seat 71, the second arc-shaped notch 72 is opposite to the first arc-shaped notch 61, the inserting piece 2 is arranged in the second arc-shaped notch 72 in a penetrating manner, and external threads are formed on the outer wall of the inserting piece 2; the arc-shaped sliding block 73 is sleeved and fixed on the inserting piece 2 and is in sliding connection with the second arc-shaped notch 72; the lock nut 74 is screwed with the insert 2 and is located at the rear side of the mounting plate 6.

When the sliding component drives the inserting piece 2 to move, the locking nut 74 is firstly unscrewed to contact the limitation of the sliding component on the inserting piece 2, then the inserting piece 2 is rotated to move along the first arc-shaped notch 61 and the second arc-shaped notch 72 and rotate around the holding rod 1 to adjust the position of the inserting piece, after the position of the inserting piece 2 is adjusted, the locking nut 74 is screwed down, and the position of the inserting piece 2 is locked by friction force through the cooperation of the locking nut and the arc-shaped sliding block 73 so as to take out foreign matters later.

Example 2

In this embodiment, as a preferred embodiment, as shown in fig. 6 and 8, the central angle of the first arc-shaped notch 61 and the central angle of the second arc-shaped notch 72 are 240 ° in this embodiment, and the number of the inserting pieces 2 is three.

Through the arrangement, after three inserting pieces 2 penetrate through foreign matters, the position of one inserting piece 2 is fixed in the middle, and the other two inserting pieces 2 rotate to the limit positions of the two ends along the first arc-shaped notch 61 and the second arc-shaped notch 72, so that the three inserting pieces 2 are evenly divided, the clamping parts forming the included angles of 120 degrees with each other are formed to encircle the foreign matters and clamp the side walls of the foreign matters, so that the stress is even, and the foreign matters are further kept stable when being pulled.

Specifically, the first liquid delivery assembly includes a first delivery tube 41, a first pump body (not shown), and a valve 42; the first conveying pipe 41 is arranged in the inserting sheet 2 in a penetrating way, and one end of the first conveying pipe 41 extends and the other end is communicated with the transfusion channel; the output end of the first pump body is connected with the other end of the first conveying pipe 41, and the input end of the first pump body is connected with an external storage vessel for storing magnetorheological fluid through a liquid suction pipe; a valve 42 is provided on the first delivery pipe 41 for opening or closing the first delivery pipe 41.

When the magnetorheological fluid is conveyed into the bag 4 through the first liquid conveying component, the input end of the first pump body is connected with a storage vessel for storing the magnetorheological fluid outside through a liquid suction pipe, then the first pump body and the valve 42 are opened, the magnetorheological fluid is pumped out by the first pump body and conveyed into the bag 4 through the first conveying pipe 41, the bag 4 is filled with the magnetorheological fluid along with continuous conveying of the first pump body, the bag 4 is expanded to the outer side of the storage groove 31, and after the magnetorheological fluid is expanded to a certain degree, the valve 42 and the first pump body are closed to block conveying of the magnetorheological fluid, so that the bag 4 is kept in an expanded state.

Further, as shown in fig. 2, in order to avoid that the foreign matter is inclined and turned over and cannot be hooked when the hollow tubule 2 is used for hooking the foreign matter to move in the process, the front side of the holding rod 1 is provided with the mounting block 8, the front end of the mounting block 8 is provided with the mounting groove, the electromagnet 5 is fixed in the mounting groove, and the linear moving assembly is arranged between the rear end of the mounting block 8 and the holding rod 1 and used for driving the mounting block 8 to extend into the nasal cavity.

Specifically, as shown in fig. 1 and 2, the linear movement assembly includes a threaded rod 81, a nut seat 82, a stopper 83, and a stopper groove 84; the threaded rod 81 is arranged in the mounting hole 11 in a penetrating way, the mounting hole 11 is horizontally arranged in the holding rod 1, one end of the threaded rod 81 extends to the front side of the mounting plate 6 and is fixed with the side wall of the mounting block 8 through the connecting rod, and the other end of the threaded rod 81 extends out of the holding rod 1; the nut seat 82 is rotationally connected with the rear end of the holding rod 1 through a bearing, and the nut seat 82 is in threaded connection with the threaded rod 81; the limiting block 83 is fixed on the outer side wall of the threaded rod 81; the limiting groove 84 is formed in the mounting hole 11, and the limiting block 83 is slidably connected with the limiting groove 84.

When the installation block 8 is driven to move through the linear movement mechanism, the nut seat 82 is screwed, the limiting block 83 is in sliding connection with the limiting groove 84, so that the rotary motion is converted into linear movement, the installation block 8 is driven to horizontally move along the length direction of the threaded rod 81, the installation block 8 enters the nasal cavity to prop against the side wall of the foreign matter, the three hollow tubules 2 hook the rear end face of the foreign matter to form a clamping limiting function, the foreign matter is prevented from tilting forward or tilting, the installation block 8 and the three hollow tubules 2 are kept to synchronously move during movement, meanwhile, the electromagnet 5 is fixed in the installation groove and can synchronously enter the nasal cavity along with the installation block 8, the electromagnet 5 is enabled to be close to the bag 4, and therefore the electromagnet 5 can be adjusted to generate magnetic force through adjusting the distance between the electromagnet 5 and the bag 4, and if the iron foreign matter is encountered, the electromagnet 5 can be directly adsorbed by the electromagnet 5, so that the foreign matter is sucked out.

Further, in order to be convenient for make the installation piece 8 get into the nasal cavity, consequently, be the toper with the installation piece 8, and the front end diameter is less than the rear end diameter, so make the front end of installation piece 8 can better get into the infant nasal cavity in, simultaneously in order to wash the lubrication to the nasal cavity inside taking out the foreign matter, in order to improve the success rate of taking out the foreign matter, consequently, a plurality of orifices 80 have been offered along its circumference around on the conical surface of installation piece 8, threaded rod 81 is hollow structure, and be equipped with second liquid conveying component in the threaded rod 81, second liquid conveying component communicates with a plurality of orifices 80, be used for carrying and spraying clear water or normal saline to orifice 80 in.

Specifically, the second liquid delivery assembly includes a multi-way tube 91, a second delivery tube 92, and a second pump body 93; the multi-way pipe 91 is fixed in a connecting cavity formed in the rear end face of the mounting block 8, the multi-way pipe 91 is provided with an input port and a plurality of output ports, and the plurality of output ports of the multi-way pipe 91 are respectively communicated with the plurality of spray holes 80 in a one-to-one correspondence manner; the second conveying pipe 92 is arranged in the threaded rod 81 in a penetrating way, and one end of the second conveying pipe 92 extends into the mounting block 8 and is communicated with the input port of the multi-way pipe 91; the second pump body 93 is fixed at the other end of threaded rod 81, and the output of second pump body 93 communicates with second conveyer pipe 92, and the input of second pump body 93 is connected with the connecting pipe, and the connecting pipe is used for storing clear water or normal saline device intercommunication with the external world.

When carrying and spraying liquid through second liquid delivery module, store clear water or normal saline device intercommunication with the connecting pipe with the external world, then take out clear water or normal saline that store the liquid storage device through control second pump body 93, and carry in the multipipette 91 through the second conveyer pipe 92, and carry in a plurality of orifice 80 blowout through multipipette 91, the second pump body 93 can control the pressure size of blowout liquid, and then can spray between nasal cavity and the foreign matter, moist, so that better removal, and because threaded rod 81 is hollow structure, can directly act as the infusion chamber, reduce too much pipeline setting.

Further, as shown in fig. 6, in order to ensure that the spray angle of the spray hole 80 can be better sprayed into the space between the nasal cavity and the foreign matter, an included angle α is formed between the spray hole 80 and the axis of the cone block, and the included angle α is in the range of 45 ° -60 °.

In summary, when the nasal foreign matter of the infant is taken out, three inserting pieces 2 are gathered together to reduce the volume of the infant and search gaps between nasal cavities and the foreign matter, then the nasal foreign matter extractor is integrally moved to the inner part of the nasal cavity of the infant through the holding rod 1, the inserting pieces 2 pass through the gaps and move to the rear side of the foreign matter under the guidance of the holding head 3, the moving process of the inserting pieces 2 cannot be influenced because the bag 4 is contracted in the holding groove, the holding rod 1 is stopped moving after passing, the three inserting pieces 2 are driven by the sliding component to rotate along the first arc-shaped notch 61 to adjust the positions of the inserting pieces, so that the three inserting pieces 2 are separated and uniformly surround the foreign matter, then the magnetorheological fluid is injected into the bag 4 through the first liquid conveying component, and in the process, the magnetorheological fluid is not influenced by external magnetic force, so that the magnetorheological fluid is always in a liquid state, the part of the bag 4 positioned at the outer side of the accommodating groove 31 forms a hook head part similar to a draw hook along with the expansion of the injection amount to the outer side of the accommodating groove 31, and because the bag 4 is soft and is attached to the surface of the foreign matter if contacting with the surface of the foreign matter, after the expansion to a certain extent, the first liquid conveying component is controlled to stop injecting the magnetorheological fluid, then the electromagnet 5 is controlled to be in an electrified state so as to generate magnetic force, the magnetic force of the electromagnet 5 can be correspondingly regulated by controlling the magnitude of current, the magnetic force generated by the electromagnet 5 can change the magnetorheological fluid in the bag 4 from liquid to solid-like form, so that the part of the bag 4 positioned at the outer side of the accommodating groove 31 is converted into a hard structure, and the whole nasal foreign matter extractor is moved to the outside of a nasal cavity through the holding rod 1, during the movement, the foreign matter is pulled to the outer side of the nasal cavity through the hard structure of the bag 4 positioned at the outer side of the containing groove 31, so that the foreign matter is taken out.

The foregoing disclosure is only illustrative of the preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any variations within the scope of the present invention will be apparent to those skilled in the art.

Claims

1. A nasal cavity foreign matter remover, comprising:

The device comprises a holding rod (1), wherein a mounting plate (6) is fixedly sleeved on the outer wall of the holding rod, and a first arc-shaped notch (61) which is coaxially arranged with the holding rod (1) is formed in the plate surface of the mounting plate (6);

The two inserting pieces (2) are connected with the first arc-shaped notch (61) in a sliding mode through a sliding assembly, and each inserting piece (2) extends along the length direction of the holding rod (1); an infusion channel is arranged in each insert (2);

The accommodating head (3) is of a flat structure, the flat surface of the accommodating head (3) extends along the length direction of the holding rod (1), the accommodating head (3) is fixed at the front end of the inserting piece (2), and an accommodating groove (31) is formed in the side wall of the accommodating head (3) facing the center of the nasal cavity;

a pocket (4) provided in the storage groove (31);

the first liquid conveying component is communicated with the bag (4) through the infusion channel and is used for conveying magnetorheological fluid into the bag (4) to expand the bag (4) after the containing head (3) passes through the foreign matters;

the electromagnet (5) is used for generating magnetic force to enable magnetorheological fluid in the expanded bag (4) to be converted into a quasi-solid form so as to hook the foreign matters;

The sliding assembly includes: the arc-shaped seat (71) is fixed on the side wall of the mounting plate (6), a second arc-shaped notch (72) with a T-shaped cross section is formed in the arc-shaped seat (71), the second arc-shaped notch (72) is opposite to the first arc-shaped notch (61), the inserting sheet (2) is arranged in the second arc-shaped notch (72) in a penetrating mode, and external threads are formed in the outer wall of the inserting sheet (2); the arc-shaped sliding block (73) is sleeved and fixed on the inserting piece (2) and is in sliding connection with the second arc-shaped notch (72); the locking nut (74) is in threaded connection with the inserting piece (2) and is positioned at the rear side of the mounting plate (6);

the first liquid delivery assembly includes: a first delivery tube (41) having one end communicating with the infusion channel; the output end of the first pump body is connected with the other end of the first conveying pipe (41), and the input end of the first pump body is connected with an external storage vessel for storing magnetorheological fluid through a liquid suction pipe; a valve (42) provided on the first delivery pipe (41) for opening or closing the first delivery pipe (41);

The front side of the holding rod (1) is provided with a mounting block (8), the side wall of the mounting block (8) opposite to the holding rod (1) is provided with a mounting groove, the electromagnet (5) is fixed in the mounting groove, a linear moving assembly is arranged between the mounting block (8) and the holding rod (1), and the linear moving assembly is used for driving the mounting block (8) to extend into the nasal cavity;

The linear motion assembly includes: the threaded rod (81) is arranged in the mounting hole (11) in a penetrating mode, the mounting hole (11) is horizontally arranged in the holding rod (1), one end of the threaded rod (81) extends to the front side of the mounting plate (6) and is fixed with the side wall of the mounting block (8) through the connecting rod, and the other end of the threaded rod (81) extends out of the holding rod (1); the nut seat (82) is rotationally connected with the rear end of the holding rod (1) through a bearing, and the nut seat (82) is in threaded connection with the threaded rod (81); the limiting block (83) is fixed on the outer side wall of the threaded rod (81); the limiting groove (84) is formed in the mounting hole (11), and the limiting block (83) is connected with the limiting groove (84) in a sliding mode.

2. The nasal foreign body extractor according to claim 1, wherein the central angle of the first arc-shaped notch (61) and the central angle of the second arc-shaped notch (72) are 240 °, and the number of the inserting pieces (2) is three.

3. The nasal cavity foreign body extractor according to claim 1, wherein the mounting block (8) is tapered, the diameter of the front end is smaller than that of the rear end, a plurality of spray holes (80) are circumferentially formed in the tapered surface of the mounting block (8), the threaded rod (81) is of a hollow structure, a second liquid conveying component is arranged in the threaded rod (81), and the second liquid conveying component is communicated with the plurality of spray holes (80) and is used for conveying and spraying clear water or physiological saline into the spray holes (80).

4. The nasal foreign object remover of claim 3, wherein the second liquid delivery assembly comprises:

The multi-way pipe (91) is fixed in a connecting cavity formed in the rear end face of the mounting block (8), the multi-way pipe (91) is provided with an input port and a plurality of output ports, and the plurality of output ports of the multi-way pipe (91) are respectively communicated with the plurality of spray holes (80) in a one-to-one correspondence manner;

The second conveying pipe (92) is arranged in the threaded rod (81) in a penetrating way, and one end of the second conveying pipe (92) extends into the mounting block (8) and is communicated with the input port of the multi-way pipe (91);

the second pump body (93) is fixed at the other end of threaded rod (81), the output of second pump body (93) with second conveyer pipe (92) intercommunication, the input of second pump body (93) is connected with the connecting pipe, the connecting pipe is used for storing clear water or normal saline device intercommunication with the external world.

5. The nasal cavity foreign matter extractor according to claim 4, wherein an included angle α is formed between the nozzle hole (80) and the axis of the cone block, and the included angle α ranges from 45 ° to 60 °.