CN214104866U - Eustachian tube washes-expansion integrated device that doses - Google Patents
Eustachian tube washes-expansion integrated device that doses Download PDFInfo
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- CN214104866U CN214104866U CN202022915925.2U CN202022915925U CN214104866U CN 214104866 U CN214104866 U CN 214104866U CN 202022915925 U CN202022915925 U CN 202022915925U CN 214104866 U CN214104866 U CN 214104866U
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Abstract
The utility model discloses an eustachian tube washes-expansion integrated device that doses, this merger support wash the expander joint in conveying system's preceding outer calorie of pipe, and impel through the drive of back drive division, the aqueduct inner core that washes the expander cup joints in outer ring shape aqueduct, the A, B export of medical three-way valve is connected respectively through the pipe to the afterbody of aqueduct inner core and outer ring shape aqueduct, the import of medical three-way valve is connected with water injection device or lavage device, the scalable cup joint at the sacculus utricule outside of eustachian tube drug support. The utility model discloses integrate sacculus expansion pipe, aqueduct inner core and eustachian tube drug support as an organic whole, and wholly pass through conveying system disposable propelling movement during the use, only can realize the treatment of dosing with the expansion to the washing of eustachian tube through the access connection lavage device or the water injection device of the medical three-way valve of outside change during the use, sacculus expansion and the synchronous completion of release eustachian tube drug support, easy operation, safe and reliable, treatment scheme are more perfect.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, concretely relates to eustachian tube washes-expansion integrated device that doses.
Background
The conventional method of treating secretory otitis media due to eustachian tube dysfunction during otic microsurgery is tympanocentesis/catheterization and/or tympanometry, and its traumatic nature to the tympanic membrane and middle ear inevitably leads to the following complications: (1) tympanopsclerosis is easily caused by middle ear mucosa bleeding, mucus exudation or long-term postoperative tube placement; (2) the tympanic membrane is not healed after the tympanocentesis or is infected after the operation to generate permanent tympanocentesis; (3) upper respiratory tract infection or external auditory canal pollution is converted into chronic suppurative otitis media; (4) sensorineural deafness can result when the tube is placed in the inferior posterior aspect. In addition, for intractable adhesive otitis media, the above procedure can be even impossible due to extreme invagination of the tympanic membrane, which presents great difficulties for clinical treatment.
In recent years, eustachian tube dilation under a nasal endoscope becomes a new method for treating patients with eustachian tube dysfunction, but the eustachian tube dilation only simply expands the eustachian tube mechanically at one time so as to improve the function of the eustachian tube, and cannot completely improve the microenvironment of the middle ear; in order to overcome the technical defects, people continuously develop medicine balloon dilatation catheters, but the medicine balloon dilatation catheters are formed by directly adding a medicine coating on a balloon, medicines stay in a lesion area through balloon dilatation to achieve the purpose of treatment, and before the medicines are expanded and released, the eustachian tube is not cleaned, so that the treatment effect is poor, and even medical accidents can be caused because the medicines react with abnormal secretions in the eustachian tube. Therefore, if an integrated device which can simultaneously clean and expand the eustachian tube for drug administration treatment can be designed, the functions of the eustachian tube and the mucous membrane of the tympanic cavity can be effectively improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the not enough of above-mentioned prior art, provide a simple structure, convenient operation, can wash and expand the eustachian tube of treatment of dosing and wash-expand the integrated device of dosing to the eustachian tube simultaneously.
In order to realize the technical purpose, the utility model discloses the technical scheme who takes does: an integrated device for washing, expanding and dosing a eustachian tube comprises a washing expander, a conveying system and a eustachian tube drug bracket, wherein the conveying system comprises a front outer clamping tube and a rear driving part, the washing expander is clamped in the front outer clamping tube, the flushing dilator comprises a balloon dilatation catheter and an inner core of the aqueduct, the balloon dilatation catheter comprises an outer annular aqueduct and a balloon bag body, the balloon bag body is coated at the front end of the outer part of the outer annular aqueduct, and is communicated with the outer annular water guide pipe through a water outlet, the inner core of the water guide pipe is sleeved in the outer annular water guide pipe, outer annular aqueduct and aqueduct inner core afterbody pass through the pipe and connect the A export and the B export of medical three-way valve respectively, and the import and the water injection device or the lavage device of medical three-way valve are connected, and the scalable cup joint of eustachian tube drug stand is outside the sacculus utricule, and the bullet leaves the sacculus utricule along with the expansion of sacculus utricule.
Further, outer ring shape aqueduct is the hard silica gel material, and the length of outer ring shape aqueduct is 25cm, and the external diameter is 5mm, and the internal diameter is 4mm, the aqueduct inner core is the soft silica gel material, and the aqueduct inner core stretches out outer ring shape aqueduct front end 2 ~ 3mm, and aqueduct inner core rear end flushes with outer ring shape aqueduct rear end, and the afterbody of outer ring shape aqueduct and aqueduct inner core is equipped with the flood peak respectively, two flood peaks are connected respectively through the pipe in the A export and the B export of medical three-way valve.
Furthermore, the water outlet is arranged on the outer wall of the outer ring-shaped water guide pipe and corresponds to the position of the balloon capsule, the number of the water outlets is 1-4, and water injected into the outer ring-shaped water guide pipe is filled into the balloon capsule through the water outlet.
Further, the balloon body has a length of 15mm and a diameter of 1cm after being fully expanded in an unbound state.
Furthermore, the front outer clamping tube is a C-shaped outer guide tube, a bent part at the front end of the C-shaped outer guide tube is bent leftwards or rightwards and is made of soft silica gel, the flushing expander is clamped in the C-shaped outer guide tube through an upper opening of the C-shaped outer guide tube, a hollow cylindrical tube is integrally connected to the tail of the C-shaped outer guide tube, and the rear driving part is a plunger type push rod and is connected in the hollow cylindrical tube in a sliding mode and used for pushing the flushing expander to move forwards along the C-shaped outer guide tube.
Furthermore, displacement scales are arranged on the C-shaped outer catheter and are respectively marked as '0' and '1', when the front end of the rear driving part is positioned at the '0' scale, the flushing dilator is contracted in the front outer clamping tube, and when the front end of the rear driving part is positioned at the '1' scale, the balloon body is completely pushed out of the front outer clamping tube.
Furthermore, the eustachian tube drug stent is sleeved outside the balloon body and bound on the balloon body through a binding rope, the eustachian tube drug stent is a hollow mesh tube, the outer surface of the eustachian tube drug stent is coated with a drug coating, the hollow mesh tube and the binding rope are both made of elastic bioabsorbable medical materials, the diameter of the binding rope is 0.1mm, and the binding rope is broken under the action of an expansion force when the balloon body is completely expanded to release the eustachian tube drug stent.
Further, the elastic bioabsorbable medical material is lactide-co-glycolide, and the drug in the drug coating is one of antibiotic, antifungal agent, glucocorticoid and mucosa protective agent.
Further, the hollow net pipe is a closed ring net pipe or a waist drum-shaped net pipe with two large ends and a small middle part.
The utility model discloses following beneficial effect has:
1) the utility model provides an eustachian tube washes-expansion integrated device of dosing, integrate sacculus expansion pipe, aqueduct inner core and eustachian tube medicine support into an organic whole, the aqueduct inner core is used for injecting the washing liquid in order to clear away the inflammatory secretion that probably exists in the tympanum, sacculus expansion pipe pressurizes water injection through outer annular aqueduct in order to expand the sacculus utricule, the sacculus utricule expansion not only can expand the obstructed eustachian tube, make normal ventilation, can also release eustachian tube medicine support, eustachian tube medicine support is in lesion area long-term slowly-released medicine, be favorable to postoperative recovery of eustachian tube mucous membrane and eustachian tube function, thereby realize washing and expansion dosing treatment to eustachian tube lesion area, the treatment scheme is more perfect;
2) the eustachian tube drug stent is made of elastic bioabsorbable medical materials, is bound on the balloon body through a binding rope made of the same material, and is broken under the action of expansion force along with the expansion of the balloon body to release the eustachian tube drug stent;
3) the utility model integrates the balloon dilatation catheter, the aqueduct inner core and the eustachian tube drug stent into a whole, and the tail water injection heads of the outer ring-shaped aqueduct of the balloon dilatation catheter and the aqueduct inner core are respectively connected with the A outlet and the B outlet of the medical three-way valve, when the eustachian tube needs to be washed, the lavage device is connected with the inlet of the medical three-way valve, the regulating valve of the rotary medical three-way valve is communicated with the inlet and the B outlet of the medical three-way valve, namely, the cleaning fluid can be injected into the tympanic cavity through the aqueduct inner core for washing and then pumped back and discharged, the inlet of the medical three-way valve is switched with the pressure pump after the washing is finished, the regulating valve of the rotary medical three-way valve is communicated with the inlet and the A outlet of the medical three-way valve, the balloon sac body is expanded through the water injection and pressurization of the outer ring-shaped aqueduct tube through the pressure pump, the expansion of the eustachian tube and the drug stent release are treated, compared with the existing drug stent which is temporarily arranged in a catheter of a conveying system when in use and then pushed out by a pushing device to release the drug stent, the installation and use method is time-consuming and labor-consuming; the utility model discloses with the direct ligature of eustachian tube drug support on the sacculus utricule when production, sacculus expansion is accomplished with release eustachian tube drug support in step, ligature eustachian tube drug support's the whole disposable propelling movement that passes through conveying system of expander, only can realize the washing to the eustachian tube through access connection lavage device or the water injection device of outside change medical three-way valve, the sacculus expansion, drug support release and last expansion treatment of dosing, and is simple in operation, use manpower sparingly, can alleviate the tradition and take out a lot of to insert the treatment misery that causes for the disease, use comfort is good.
Drawings
FIG. 1 is a schematic view of the overall structure of the irrigation dilator and eustachian tube drug stent of the present invention;
FIG. 2 is an enlarged view of a portion of the area A of FIG. 1;
FIG. 3 is a schematic view of the FIG. 2 structure with the eustachian tube drug stent removed;
FIG. 4 is an enlarged view of a portion of FIG. 1 in the area B;
fig. 5 is a schematic structural view of the conveying system of the present invention;
FIG. 6 is a schematic diagram of the eustachian tube drug stent of FIG. 1;
FIG. 7 is a state diagram of the flushing dilator with the balloon body contracted in the front outer clamping tube;
FIG. 8 is a state diagram of the flushing dilator when the balloon body is pushed out of the front outer clamping tube;
fig. 9 is a view of the balloon of fig. 8 in connection with a eustachian tube drug stent.
Wherein the reference numerals are: the device comprises an irrigation dilator 1, a balloon dilatation catheter 1-1, an outer annular aqueduct 1-11, a balloon capsule 1-12, a water outlet 1-13, an aqueduct inner core 1-2, a medical three-way valve 1-3, an A outlet 1-31, a B outlet 1-32, an inlet 1-33, a conveying system 2, a front outer clamping tube 2-1, a front end bending part 2-11, a rear driving part 2-2, a eustachian tube drug stent 3 and a binding rope 4.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.
As shown in figures 1-9, the utility model relates to a eustachian tube flushing-expanding administration integrated device, which comprises a flushing dilator 1, a conveying system 2 and a eustachian tube drug bracket 3, wherein the conveying system 2 comprises a front outer clamping tube 2-1 and a rear driving part 2-2, the flushing dilator 1 is clamped in the front outer clamping tube 2-1 and is driven to advance by the rear driving part 2-2, the flushing dilator 1 comprises a balloon dilatation catheter 1-1 and an inner aqueduct core 1-2, the balloon dilatation catheter 1-1 comprises an outer annular aqueduct 1-11 and a balloon sac 1-12, the balloon sac 1-12 is wrapped at the outer front end of the outer annular aqueduct 1-11 and is communicated with the outer annular aqueduct 1-11 through a water outlet 1-13, the inner aqueduct core 1-2 is sleeved in the outer annular aqueduct 1-11, the outer ring-shaped water guide pipe 1-11 is made of hard silica gel, the length of the outer ring-shaped water guide pipe 1-11 is 25cm, the outer diameter is 5mm, the inner diameter is 4mm, the water guide pipe inner core 1-2 is made of soft silica gel, the water guide pipe inner core 1-2 extends out of the front end of the outer ring-shaped water guide pipe 1-11 by 2-3 mm, the rear end of the water guide pipe inner core 1-2 is flush with the rear end of the outer ring-shaped water guide pipe 1-11, the tail parts of the outer ring-shaped water guide pipe 1-11 and the water guide pipe inner core 1-2 are respectively provided with a water injection head, an A outlet 1-31 and a B outlet 1-32 of the medical three-way valve 1-3 are respectively connected with the water injection head of the outer ring-shaped water guide pipe 1-11 and the water guide pipe inner core 1-2 through guide pipes, an inlet 1-33 of the medical three-way valve 1-3 is connected with a water injection device or an lavage device, and the balloon bag body 1-12 is coated outside the front end of the outer ring-shaped water guide pipe 1-11, the length of the balloon capsule body 1-12 is 15mm, the diameter of the balloon capsule body is 1cm after the balloon capsule body is fully expanded in an unbound state, the number of the water outlets 1-13 is 1-4, the water injected into the outer annular water guide pipe 1-11 is filled into the balloon capsule body 1-12 through the water outlets 1-13 corresponding to the position of the balloon capsule body 1-12, and the eustachian tube drug stent 3 is telescopically sleeved outside the balloon capsule body 1-12 and bounces away from the balloon capsule body 1-12 along with the expansion of the balloon capsule body 1-12.
As shown in fig. 5, the front outer clamping tube 2-1 is a C-shaped outer guide tube, a front end bending portion of the C-shaped outer guide tube is bent left or right and is made of soft silica gel, the flushing dilator 1 is clamped in the C-shaped outer guide tube through an upper opening of the C-shaped outer guide tube, a hollow cylindrical tube is integrally connected to a tail portion of the C-shaped outer guide tube, and the rear driving portion 2-2 is a plunger type push rod slidably connected in the hollow cylindrical tube and used for pushing the flushing dilator 1 to move forward along the C-shaped outer guide tube.
As shown in fig. 7 and 8, the C-shaped outer catheter is provided with displacement scales marked as "0" and "1", respectively, when the front end of the rear driving part 2-2 is located at the scale of "0", the flushing dilator 1 is contracted in the front outer clamping tube 2-1, and when the front end of the rear driving part 2-2 is located at the scale of "1", the balloon body 1-12 is completely pushed out of the front outer clamping tube 2-1.
As shown in fig. 2 and 9, the eustachian tube drug stent 3 is sleeved outside the balloon body 1-12 and bound on the balloon body 1-12 through a binding rope 4, the eustachian tube drug stent 3 is a hollow mesh tube coated with a drug coating on the outer surface, both the hollow mesh tube and the binding rope 4 are made of elastic bioabsorbable medical materials, the diameter of the binding rope 4 is 0.1mm, and the binding rope is broken under the action of an expansion force when the balloon body 1-12 is completely expanded to release the eustachian tube drug stent 3.
Wherein the elastic bioabsorbable medical material is lactide-co-glycolide, and the drug in the drug coating is one of antibiotic, antifungal agent, glucocorticoid and mucosa protective agent.
In the embodiment, the hollow mesh pipe is a closed annular mesh pipe or a waist drum-shaped mesh pipe with two large ends and a small middle, and the waist drum-shaped mesh pipe with two large ends and a small middle is preferred.
The application method of the eustachian tube irrigation-expansion administration integrated device comprises the following steps:
s1, placing the front outer clamping tube 2-1 of the conveying system 2 along the nasal cavity direction, enabling the front end bending part 2-11 to reach the mouth of the eustachian tube and to be placed into the eustachian tube along the direction parallel to the trend of the eustachian tube, pushing the rear driving part 2-2 to enable the front end of the rear driving part to be located at the scale of '1', and completely pushing the balloon bag 1-12 out of the front outer clamping tube 2-1 and placing the balloon bag in the lesion area of the eustachian tube;
s2, connecting the lavage device with an inlet 1-33 of a medical three-way valve 1-3, rotating an adjusting valve of the medical three-way valve 1-3 to communicate with an inlet 1-33 of the medical three-way valve 1-3 and an outlet 1-32 of the medical three-way valve B, injecting a cleaning solution into the middle ear cavity from the outlet 1-32 of the medical three-way valve through an inner core 1-2 of a water guide pipe through the lavage device, pumping the cleaning solution and the secretion in the tympanic cavity back to the lavage device through the lavage device, and detaching the lavage device from the inlet 1-33 of the medical three-way valve 1-3 after the washing is finished;
s3, connecting a pressure pump with an inlet 1-33 of a medical three-way valve 1-3, rotating an adjusting valve of the medical three-way valve 1-3 to enable the inlet 1-33 of the medical three-way valve 1-3 to be communicated with an outlet 1-31 of the medical three-way valve A, injecting water through the pressure pump to pressurize so as to expand a balloon capsule 1-12, further expanding a narrow or blocked eustachian tube, wherein when the balloon capsule 1-12 is expanded, a binding rope 4 is broken under the action of an expansion force to release the eustachian tube drug stent 3, the eustachian tube drug stent 3 is elastically expanded to be in contact with a lesion part of the eustachian tube, and in the automatic degradation process of the eustachian tube drug stent 3, drugs in a drug coating are slowly released to the lesion area;
s4, decompressing and retracting the balloon capsule body 1-12, separating the eustachian tube drug stent 3 from the balloon capsule body 1-12 and remaining in the eustachian tube;
s5, finally, the conveying system 2 is pulled out, and the conveying system 2 drives the irrigation dilator 1 to exit from the eustachian tube-nasal cavity, so that cleaning, dilation and drug administration treatment of the eustachian tube lesion area are completed.
The utility model pushes the washing dilator 1 into the lesion area of the eustachian tube through the conveying system 2, the inlet 1-33 of the medical three-way valve 1-3 is connected with the lavage device, the adjusting valve of the medical three-way valve 1-3 is rotated to inject the cleaning fluid into the external water source through the inner core 1-2 of the aqueduct, then the cleaning fluid and the secretion and blood in the eustachian tube are pumped out of the eustachian tube, after the washing is finished, the lavage device is removed, the pressure pump is connected with the inlet 1-33 of the medical three-way valve 1-3, the adjusting valve of the medical three-way valve 1-3 is rotated to inject water and pressurize through the outer ring-shaped aqueduct tube 1-11 to expand the sacculus utricule 1-12, the binding rope 4 binding the eustachian tube medicament support 3 is broken under the action of the expansion force when the sacculus utricule 1-12 is expanded to release the eustachian tube medicament support 3, the eustachian tube medicament support 3 is elastically expanded and slowly releases the medicament, the blocked eustachian tube can be expanded to be recovered smoothly, and meanwhile, the eustachian tube can be subjected to drug treatment by slowly releasing the drug in a lesion area for a long time, so that the recovery of the functions of the eustachian tube and the middle ear after operation is facilitated, the operation is simple, the safety and the reliability are realized, the treatment scheme is more perfect, and the effect is better.
Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, a plurality of modifications and decorations without departing from the principle of the present invention should be considered as the protection scope of the present invention.
Claims (9)
1. The eustachian tube flushing-expanding administration integrated device is characterized by comprising a flushing dilator (1), a conveying system (2) and a eustachian tube drug bracket (3), wherein the conveying system (2) comprises a front outer clamping tube (2-1) and a rear driving part (2-2), the flushing dilator (1) is clamped in the front outer clamping tube (2-1) and is driven to advance through the rear driving part (2-2), the flushing dilator (1) comprises a balloon dilation catheter (1-1) and a water guide tube inner core (1-2), the balloon dilation catheter (1-1) comprises an outer annular water guide tube (1-11) and a balloon sac body (1-12), the balloon sac body (1-12) is coated at the outer front end of the outer annular water guide tube (1-11) and is communicated with the outer annular water guide tube (1-11) through a water outlet (1-13), the eustachian tube drug stent (3) is telescopically sleeved outside the balloon capsule body (1-12) and bounces away from the balloon capsule body (1-12) along with the expansion of the balloon capsule body (1-12).
2. The integrated eustachian tube irrigation-dilation administration device according to claim 1, wherein: the medical three-way valve is characterized in that the outer annular water guide pipe (1-11) is made of hard silica gel, the length of the outer annular water guide pipe (1-11) is 25cm, the outer diameter of the outer annular water guide pipe is 5mm, the inner diameter of the outer annular water guide pipe is 4mm, the inner core (1-2) of the water guide pipe is made of soft silica gel, the inner core (1-2) of the water guide pipe extends out of the front end of the outer annular water guide pipe (1-11) by 2-3 mm, the rear end of the inner core (1-2) of the water guide pipe is flush with the rear end of the outer annular water guide pipe (1-11), water injection heads are arranged at the tail parts of the outer annular water guide pipe (1-11) and the inner core (1-2) of the water guide pipe respectively, and an A outlet (1-31) and a B outlet (1-32) of the medical three-way valve (1-3) are connected with the two water injection heads respectively through guide pipes.
3. The integrated eustachian tube irrigation-dilation administration device according to claim 1, wherein: the water outlets (1-13) are arranged on the outer wall of the outer annular water guide pipe (1-11) and correspond to the positions of the balloon capsules (1-12), the number of the water outlets (1-13) is 1-4, and water injected into the outer annular water guide pipe (1-11) is filled into the balloon capsules (1-12) through the water outlets (1-13).
4. The integrated eustachian tube irrigation-dilation administration device according to claim 1, wherein: the length of the balloon body (1-12) is 15mm, and the diameter of the balloon body is 1cm after the balloon body is fully expanded in an unbound state.
5. The integrated eustachian tube irrigation-dilation administration device according to claim 1, wherein: the front outer clamping pipe (2-1) is a C-shaped outer guide pipe, a bent part (2-11) at the front end of the C-shaped outer guide pipe is bent leftwards or rightwards and is made of soft silica gel, the flushing expander (1) is clamped in the C-shaped outer guide pipe through an upper opening of the C-shaped outer guide pipe, a hollow cylindrical pipe is integrally connected to the tail of the C-shaped outer guide pipe, and the rear driving part (2-2) is a plunger type push rod and is connected in the hollow cylindrical pipe in a sliding mode and used for pushing the flushing expander (1) to move forwards along the C-shaped outer guide pipe.
6. The integrated eustachian tube irrigation-dilation administration device according to claim 5, wherein: the C-shaped outer catheter is provided with displacement scales which are respectively marked as '0' and '1', when the front end of the rear driving part (2-2) is positioned at the '0' scale, the flushing dilator (1) is contracted in the front outer clamping tube (2-1), and when the front end of the rear driving part (2-2) is positioned at the '1' scale, the balloon body (1-12) is completely pushed out of the front outer clamping tube (2-1).
7. The integrated eustachian tube irrigation-dilation administration device according to claim 1, wherein: the eustachian tube drug stent (3) is sleeved outside the balloon body (1-12) and bound on the balloon body (1-12) through a binding rope (4), the eustachian tube drug stent (3) is a hollow mesh tube coated with a drug coating on the outer surface, the hollow mesh tube and the binding rope (4) are both made of elastic bioabsorbable medical materials, the diameter of the binding rope (4) is 0.1mm, and the binding rope is broken under the action of an expansion force when the balloon body (1-12) is completely expanded to release the eustachian tube drug stent (3).
8. The integrated eustachian tube irrigation-dilation administration device according to claim 7, wherein: the elastic bioabsorbable medical material is lactide-co-glycolide, and the medicine in the medicine coating is one of antibiotic, antifungal agent, glucocorticoid and mucous membrane protective agent.
9. The integrated eustachian tube irrigation-dilation administration device according to claim 7, wherein: the hollow net pipe is a closed annular net pipe or a waist drum-shaped net pipe with two large ends and a small middle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022915925.2U CN214104866U (en) | 2020-12-08 | 2020-12-08 | Eustachian tube washes-expansion integrated device that doses |
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|---|---|---|---|
| CN202022915925.2U CN214104866U (en) | 2020-12-08 | 2020-12-08 | Eustachian tube washes-expansion integrated device that doses |
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| CN214104866U true CN214104866U (en) | 2021-09-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116672164A (en) * | 2022-02-23 | 2023-09-01 | 柏为（武汉）医疗科技股份有限公司 | Eustachian tube bracket |
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2020
- 2020-12-08 CN CN202022915925.2U patent/CN214104866U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116672164A (en) * | 2022-02-23 | 2023-09-01 | 柏为（武汉）医疗科技股份有限公司 | Eustachian tube bracket |
| CN116672164B (en) * | 2022-02-23 | 2024-04-19 | 柏为（武汉）医疗科技股份有限公司 | Eustachian tube bracket |
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