CN114099927A - Device is clogged to duct sliver spiral - Google Patents
Device is clogged to duct sliver spiral Download PDFInfo
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- CN114099927A CN114099927A CN202111500205.2A CN202111500205A CN114099927A CN 114099927 A CN114099927 A CN 114099927A CN 202111500205 A CN202111500205 A CN 202111500205A CN 114099927 A CN114099927 A CN 114099927A
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- sliver
- piston
- cylinder
- needle cylinder
- duct
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- 238000000034 method Methods 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 29
- 210000000613 ear canal Anatomy 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 238000010030 laminating Methods 0.000 abstract description 6
- 238000009423 ventilation Methods 0.000 abstract description 4
- 238000005429 filling process Methods 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 2
- 238000004804 winding Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000009825 accumulation Methods 0.000 description 3
- 210000003128 head Anatomy 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M31/00—Devices for introducing or retaining media, e.g. remedies, in cavities of the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F11/00—Methods or devices for treatment of the ears or hearing sense; Non-electric hearing aids; Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense; Protective devices for the ears, carried on the body or in the hand
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2210/00—Anatomical parts of the body
- A61M2210/06—Head
- A61M2210/0662—Ears
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Psychology (AREA)
- Vascular Medicine (AREA)
- Acoustics & Sound (AREA)
- Physics & Mathematics (AREA)
- Otolaryngology (AREA)
- Biophysics (AREA)
- Anesthesiology (AREA)
- Hematology (AREA)
- Actuator (AREA)
Abstract
The invention relates to a spiral auditory canal sliver filling device, which effectively solves the problems that the existing sliver is easy to accumulate in the auditory canal to cause unsmooth auditory canal ventilation and is not beneficial to wound surface recovery and influence on hearing of a patient in the filling process; the technical scheme of its solution makes the sliver of spiral winding on sealed chamber by loosening jack-up and spiral laminating inside the duct gradually in the duct through the rotation of the inflation cooperation pipe of gasbag, the in-process of this sliver laminating, the gasbag inflation size is laminated the duct size completely, therefore the sliver laminating also accords with the duct profile completely, and can guarantee sliver non-deformable and drop when sealed chamber takes out, the sliver laminates with spiral mode in the duct and gives a hollow logical groove of duct, can not only effectually realize the ventilation in the duct but also can effectively reduce the influence to the hearing when the sliver fills in.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a device for spirally filling yarns in auditory canals.
Background
In the treatment process of auditory canal diseases, the dressing change is realized by filling the sliver, in the current stage, a doctor needs to clamp one end of the sliver by using tweezers, and pulling the auricle of the patient to fill one end of the sliver into the auditory canal, gradually changing the clamping position and pushing the sliver in the auditory canal, finally applying the sliver to the affected part of the auditory canal in an arc state under an ideal state, in the actual operation process, the sliver is soft, the tweezers with rugged auditory canals can only plug the head of the sliver frequently, and the sliver at the rear section is plugged in a stacking way, so that the sliver can be filled in the auditory canals, however, the accumulation of sliver in the ear canal is detrimental to air flow, and sliver accumulation can also affect the hearing of the patient, therefore, a new device is needed at the present stage to achieve the effect that the gauze can be uniformly applied to the affected part of the auditory canal and the accumulation of the gauze in the auditory canal can be effectively avoided.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the ear canal sliver spiral filling device, which effectively solves the problems that the ear canal ventilation is not smooth and the wound recovery is not facilitated and the hearing of a patient is influenced because the sliver is easily accumulated in the ear canal in the filling process of the existing sliver.
The technical scheme for solving the problems comprises a plurality of round pipes with horizontal axes in the left-right direction, the round pipes are connected end to end in a rotating way, the left round pipe can drive the right round pipe to rotate synchronously in a rotating way, the right round pipe cannot drive the left round pipe to rotate reversely, a cylinder is installed at the left end of the round pipe at the leftmost end in a coaxial rotating way, a sleeve is installed at the right side of the round pipe at the rightmost end in a coaxial rotating way, the cylinder, the round pipes and the sleeve form a test-tube-shaped sealing cavity with an open right end, a plurality of air bags communicated with the inside of the sealing cavity are evenly distributed on the circumference of the sealing cavity, a first piston is installed in the sealing cavity, an external threaded pipe is fixed at the right end of the first piston, the external threaded pipe is communicated with the sealing cavity, a needle cylinder is coaxially fixed at the right end of the sealing cavity, the left end of the needle cylinder is open, the right end of the needle cylinder is sealed, a piston rod of the needle cylinder penetrates out from the right side of the needle cylinder, the right end of the external threaded pipe is rotatably installed on the piston rod of the needle cylinder and communicated with the inside of the needle cylinder, the left end of the needle cylinder is fixedly provided with a nut sleeved on the external threaded pipe, the piston rod of the needle cylinder is moved rightwards, so that gas in the needle cylinder can be conveyed into the sealing cavity through the external threaded pipe, meanwhile, the external threaded pipe is driven by the nut in the process of moving rightwards along with the piston rod, so that the first piston can move rightwards and rotate, and the first piston rotates to drive a circular pipe contacted with the first piston to rotate through friction force.
Furthermore, the rotation of right side pipe can not the left pipe of back drive and rotate, the right-hand member of pipe is equipped with the ring channel, installs the one-way bearing of terminal surface in the ring channel, and there is the sealing washer notch department of ring channel.
Furthermore, the left end of seal chamber is the arc surface, and the left side of seal chamber is equipped with the opening and towards the hemispherical clamp plate of seal chamber, and the left end of seal chamber runs through there is a polished rod, and the one end of polished rod is fixed on the clamp plate, and the other end is fixed with a spring, and the free end of spring is fixed with an annular permanent magnet, and the left end face of first piston is inlayed and is had one and can be by permanent magnet adsorbed hoop, is equipped with a through-hole in the middle of the first piston.
Furthermore, the first piston is a rubber piston, an edge in the axial direction of the first piston is arranged on the inner wall of the sealing cavity, the rubber piston deforms to seal the sealing cavity, and the friction force between the first piston and the circular tube is increased by the aid of the edge in the axial direction.
Furthermore, the contracted air bags do not obstruct the sliding of the yarn strips, a plurality of support bars along the axial direction of the circular tube and the circular cylinder are uniformly distributed on the outer edge of the circular tube and the circular cylinder, the support bars are arranged between two adjacent air bags, and the support bars support the yarn strips when the air bags are contracted.
Furthermore, a channel which can convey the gas in the needle cylinder to the external thread pipe is arranged on the piston rod of the needle cylinder.
Furthermore, the needle cylinder is provided with an air release valve, and the air bag can be contracted under the action of self elasticity under the condition of no inflation.
Compared with the traditional equipment, the device has the following advantages:
1. this device makes the sliver of spiral winding on sealed chamber by loosening jack-up and spiral laminating inside the duct gradually through the rotation of the inflation cooperation pipe of gasbag in the duct, and the in-process of this sliver laminating, the duct size is laminated completely to gasbag inflation size, therefore the sliver laminating also accords with the duct profile completely to can guarantee sliver non-deformable and drop when sealed chamber takes out.
2. The gauze is laminated in the duct with the spiral mode in the duct with a hollow logical groove in the duct, can not only the effectual ventilation that realizes in the duct but also can effectively reduce the influence to the hearing when the gauze fills in.
3. Compared with the traditional yarn filling mode, the filling mode of the device is more efficient and easy to operate, and can fall off in a spiral mode when being drawn out, so that discomfort of a patient in the dressing change process is effectively reduced.
4. The clamp plate carries out spacingly with the sliver tip when making initial condition through the absorption of permanent magnet and hoop for this device is placed in the duct easily, is locking the gasbag and is aerifyd gradually, and the permanent magnet breaks away from gradually with the hoop and makes the clamp plate not at centre gripping sliver tip, and the sliver at this moment has partly to be supported spacingly by the gasbag, consequently the clamp plate loosens the tip and can directly take out this device after accomplishing the sliver and spread out at the duct internal screw and not be used for carrying out follow-up operation, makes this device use more convenient.
Drawings
FIG. 1 is a front sectional view of the balloon of the present invention fully retracted.
Fig. 2 is a front sectional view of the left side airbag of the present invention when inflated.
Fig. 3 is a front view of the present invention.
Fig. 4 is an end view of the tube and its upper structure of the present invention.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
As can be seen from the drawings 1 to 4, the invention comprises a plurality of circular tubes 1 with horizontal left and right axes, the circular tubes 1 are connected end to end in a rotating way, the left circular tube 1 can rotate to drive the right circular tube 1 to rotate synchronously, the right circular tube 1 can not rotate to drive the left circular tube 1 to rotate reversely, a cylinder 2 is coaxially and rotatably arranged at the left end of the circular tube 1 at the leftmost end, a sleeve 3 is coaxially and rotatably arranged at the right side of the circular tube 1 at the rightmost end, the cylinder 2, the circular tubes 1 and the sleeve 3 form a test tube-shaped sealed cavity with an open right end, a plurality of air bags 4 communicated with the inside of the sealed cavity are evenly distributed on the circumference of the sealed cavity, a first piston 5 is arranged in the sealed cavity, an external threaded tube 6 is fixed at the right end of the first piston 5, the external threaded tube 6 is communicated with the sealed cavity, a needle cylinder 7 is coaxially fixed at the right end of the sealed cavity, the left end and the right end of the needle cylinder 7 are sealed, a piston rod 8 of the needle cylinder 7 penetrates out of the right side of the needle cylinder 7, the right end of the external threaded tube 6 is rotatably installed on the piston rod 8 of the needle cylinder 7 and is communicated with the interior of the needle cylinder 7, a nut 9 sleeved on the external threaded tube 6 is fixed at the left end of the needle cylinder 7, the piston rod 8 of the needle cylinder 7 can be moved rightwards, gas in the needle cylinder 7 can be conveyed into a sealed cavity through the external threaded tube 6, meanwhile, the external threaded tube 6 is driven by the nut 9 in the process of moving rightwards along with the piston rod 8, so that the first piston 5 can move rightwards and rotate, and the first piston 5 rotates to drive the circular tube 1 which is in contact with the first piston 5 through friction force.
In order to realize that the rotation of left side pipe 1 can drive the rotation of its right side pipe 1, the rotation of right side pipe 1 can not the left pipe 1 of back drive and rotate, the right-hand member of pipe 1 is equipped with ring channel 10, installs the one-way bearing of terminal surface in the ring channel 10, and there is the sealing washer notch department of ring channel 10.
In order to fix the head of the sliver, the left end of the sealing cavity is an arc surface, a pressing plate 11 with an opening facing to the hemispherical shape of the sealing cavity is arranged on the left side of the sealing cavity, a polished rod 12 penetrates through the left end of the sealing cavity, one end of the polished rod 12 is fixed on the pressing plate 11, a spring 13 is fixed at the other end of the polished rod, an annular permanent magnet 14 is fixed at the free end of the spring 13, an iron ring 15 capable of being adsorbed by the permanent magnet 14 is embedded in the left end face of the first piston 5, and a through hole is formed in the middle of the first piston 5.
In order to realize that the first piston 5 can drive the circular tube 1 in contact with the first piston to rotate through friction force during rotation, the first piston 5 is a rubber piston, the inner wall of the sealing cavity is provided with ridges along the axial direction of the first piston, the rubber piston deforms to realize sealing of the sealing cavity, and the friction force between the first piston 5 and the circular tube 1 is increased through the ridges along the axial direction.
In order to realize that the contracted air bags 4 do not obstruct the sliding of the yarn when the air bags 4 are contracted, a plurality of supporting strips 16 along the axial direction of the circular tube 1 and the cylinder 2 are uniformly distributed on the outer edge of the circular tube 1 and the cylinder 2 in the circumferential direction, the supporting strips 16 are arranged between two adjacent air bags 4, and the supporting strips 16 support the yarn when the air bags 4 are contracted.
In order to realize the communication between the right end of the external thread tube 6 and the inside of the syringe 7, a passage which can convey the gas in the syringe 7 to the external thread tube 6 is arranged on the piston rod 8 of the syringe 7.
In order to realize the adjustment of the air pressure in the needle cylinder 7, an air release valve 17 is arranged on the needle cylinder 7, and the air bag 4 can contract under the action of self elasticity under the condition of no inflation.
The specific working process of the invention is as follows: when the device is used, the air release valve 17 is opened to balance the external air pressure with the air pressure in the sealed cavity, the air bag 4 keeps a retraction state, the piston rod 8 of the needle cylinder 7 is pushed leftwards to enable the piston rod 8 of the vacuum cylinder to drive the first piston 5 to move leftwards through the external threaded pipe 6, in the process, under the action of the one-way end face bearing, the first piston 5 cannot drive the circular pipe 1 to rotate, so that the first piston 5 rotates and moves leftwards in the sealed cavity until the permanent magnet 14 and the iron ring 15 are mutually adsorbed, then the air release valve 17 is closed, the yarn is wound on the outer side of the sealed cavity in a spiral mode after the completion, the support strip 16 supports the yarn, the left yarn cover presses the right yarn, the left end part of the wound yarn is placed between the pressure plate 11 and the cylinder 2, the first piston 5 is stretched by pulling the piston rod 8 of the needle cylinder 7 rightwards to enable the pressure plate 11 and the end part of the cylinder 2 to be tightly attached to realize the fixation of the end part of the yarn, at the moment, the sealed cavity wound with the sliver is pushed into the auditory canal, the piston rod 8 of the needle cylinder 7 is pulled rightwards at the moment, in the process, the right movement of the piston rod 8 enables the gas in the needle cylinder 7 to enter the sealed cavity through the external threaded pipe 6, the gas pressure in the sealed cavity is increased, meanwhile, the right movement of the piston rod 8 drives the first piston 5 to move rightwards through the external threaded pipe 6, in the process, the right movement of the first piston 5 enables the air bag 4 to be sequentially inflated from left to right, meanwhile, the right movement of the external threaded pipe 6 realizes the rotation of the first piston 5 under the action of the nut 9, the rotation of the first piston 5 enables the first piston 5 to drive the circular pipe 1 in contact with the first piston to rotate, under the action of the one-way end face bearing, the circular pipe 1 on the left rotates to drive the circular pipe 1 on the right to rotate, in the process, the air bag 4 on the leftmost side expands and supports the sliver in the auditory canal in a jacking mode, and the air bag 4 expands sequentially from left to right along with the continuous right movement of the first piston 5, the sliver is spirally spread in the auditory canal along with the rotation of the circular tube 1, the first piston 5 passes through the left circular tube 1, is separated from the contact circular tube 1 and does not rotate along with the rotation of the right circular tube 1, the air bag 4 support can not be rotationally driven at the moment, the sliver which is originally spirally wound on the sealing cavity is finally jacked and attached in the auditory canal through the air bag 4 in the rotating process of the sealing cavity along with the continuous right movement of the first piston 5, the spring 13 is gradually stretched along with the continuous right movement of the first piston 5, the spring 13 is accumulated until the gradual magnetic adsorption force of the permanent magnet 14 and the iron ring 15 is smaller than the accumulated force of the spring 13, the permanent magnet 14 is separated from the iron ring 15 at the moment, the pressing plate 11 can release the clamped sliver end part, and at the moment, a part of the sliver is supported and limited by the air bag 4, so that the release of the sliver end part does not influence the spread of the subsequent sliver, after the actions are finished, the air is released through the air release valve 17, the air bag 4 retracts, the device can be drawn out, the yarn strips with the expanded diameters are filled in the auditory meatus in a spiral mode, and the piston rod 8 comprises a piston in a needle cylinder and a pull rod for driving the piston to move.
According to the invention, the gauze which is spirally wound on the sealed cavity is gradually loosened and jacked up in the auditory canal and is spirally attached to the inside of the auditory canal by the expansion of the air bag 4 in cooperation with the rotation of the circular tube 1, so that the gauze forms a hollow cylinder shape in the auditory canal, and the problems that the auditory canal is not ventilated smoothly and the hearing of a patient is not influenced due to the fact that the gauze is easily accumulated in the auditory canal in the filling process of the existing gauze are effectively solved.
Claims (7)
1. The ear canal sliver spiral filling device is characterized by comprising a plurality of round pipes (1) with horizontal axes in the left-right direction, the round pipes (1) are connected in a head-to-tail rotating mode, the round pipe (1) on the left side can be driven to rotate synchronously, the round pipe (1) on the right side can not be driven to rotate reversely, a cylinder (2) is installed at the left end of the round pipe (1) at the leftmost end in a coaxial rotating mode, a sleeve (3) is installed at the right side of the round pipe (1) at the rightmost end in a coaxial rotating mode, the cylinder (2), the round pipes (1) and the sleeve (3) form a test tube-shaped sealed cavity with an opening at the right end, a plurality of air bags (4) communicated with the sealed cavity are evenly distributed on the circumference of the sealed cavity, a first piston (5) is installed in the sealed cavity, an external threaded pipe (6) is fixed at the right end of the first piston (5), and the external threaded pipe (6) is communicated with the sealed cavity, the right end of the sealing cavity is coaxially fixed with a needle cylinder (7), the left end of the needle cylinder (7) is open, the right end of the needle cylinder is sealed, a piston rod (8) of the needle cylinder (7) penetrates out of the right side of the needle cylinder (7), the right end of an external threaded tube (6) is rotatably installed on the piston rod (8) of the needle cylinder (7) and communicated with the inside of the needle cylinder (7), a nut (9) sleeved on the external threaded tube (6) is fixed at the left end of the needle cylinder (7), the piston rod (8) of the needle cylinder (7) moving rightwards can enable gas in the needle cylinder (7) to be conveyed into the sealing cavity through the external threaded tube (6), meanwhile, the external threaded tube (6) can move rightwards and rotate along with the piston rod (8) in the process of moving rightwards through the nut (9), and the first piston (5) can rotate rightwards and can drive the circular tube (1) in contact with the first piston (5) through friction force.
2. The ear canal sliver spiral plugging device according to claim 1, wherein the right end of the circular tube (1) is provided with an annular groove (10), an end face one-way bearing is installed in the annular groove (10), and a sealing ring is arranged at the notch of the annular groove (10).
3. The ear canal sliver spiral plugging device according to claim 1, wherein the left end of the sealing cavity is a circular arc surface, the left side of the sealing cavity is provided with a pressing plate (11) with an opening facing to the hemispherical shape of the sealing cavity, the left end of the sealing cavity is penetrated with a polish rod (12), one end of the polish rod (12) is fixed on the pressing plate (11), the other end is fixed with a spring (13), the free end of the spring (13) is fixed with an annular permanent magnet (14), the left end surface of the first piston (5) is embedded with an iron ring (15) which can be adsorbed by the permanent magnet (14), and the middle of the first piston (5) is provided with a through hole.
4. The ear canal sliver spiral plugging device according to claim 1, wherein the first piston (5) is a rubber piston, the inner wall of the sealing chamber is provided with an axial ridge along the inner wall, the rubber piston deforms to seal the sealing chamber, and the axial ridge increases the friction between the first piston (5) and the circular tube (1).
5. The ear canal sliver spiral plugging device according to claim 1, wherein a plurality of support strips (16) are uniformly distributed on the outer periphery of the circular tube (1) and the cylinder (2) along the axial direction of the circular tube and the cylinder, the support strips (16) are arranged between two adjacent air bags (4), and the support strips (16) support the sliver when the air bags (4) are contracted.
6. The ear canal sliver spiral plugging device according to claim 1, wherein the piston rod (8) of the cylinder (7) is provided with a passage for delivering gas in the cylinder (7) to the externally threaded tube (6).
7. The ear canal sliver spiral plugging device according to claim 1, wherein the air release valve (17) is provided on the cylinder (7), and the air bag (4) can be contracted by its own elastic force without being inflated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111500205.2A CN114099927B (en) | 2021-12-09 | 2021-12-09 | Auditory canal sliver spiral stuffing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111500205.2A CN114099927B (en) | 2021-12-09 | 2021-12-09 | Auditory canal sliver spiral stuffing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114099927A true CN114099927A (en) | 2022-03-01 |
| CN114099927B CN114099927B (en) | 2024-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111500205.2A Active CN114099927B (en) | 2021-12-09 | 2021-12-09 | Auditory canal sliver spiral stuffing device |
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| CN (1) | CN114099927B (en) |
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| CN112316236A (en) * | 2020-10-22 | 2021-02-05 | 郑州大学第一附属医院 | Balanced interior pressure duct belt cleaning device |
| CN113069676A (en) * | 2021-04-09 | 2021-07-06 | 孙会文 | Ear-nose-throat nursing ear canal administration device |
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2021
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|---|---|---|---|---|
| US20160058619A1 (en) * | 2014-08-28 | 2016-03-03 | Oido Nova Ltd. | Ear protector against moisture |
| CN204395208U (en) * | 2015-01-21 | 2015-06-17 | 刘辉 | A kind of gynecological medicine-feeding sliver clamping device |
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| Publication number | Publication date |
|---|---|
| CN114099927B (en) | 2024-07-02 |
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