CN2572990Y - Auditory meatus rack - Google Patents
Auditory meatus rack Download PDFInfo
- Publication number
- CN2572990Y CN2572990Y CN 02248161 CN02248161U CN2572990Y CN 2572990 Y CN2572990 Y CN 2572990Y CN 02248161 CN02248161 CN 02248161 CN 02248161 U CN02248161 U CN 02248161U CN 2572990 Y CN2572990 Y CN 2572990Y
- Authority
- CN
- China
- Prior art keywords
- dilator
- meatus
- meatus acusticus
- auditory meatus
- acusticus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to an auditory meatus rack, which comprises a wire mesh and a silicone membrane. The wire mesh is adopted as a skeleton which is wrapped inside the silicone membrane, particularly a tubular structure which has a shape same as an auditory meatus and is a trapezoidal cylinder is adopted, and the curved surface of the head or the tail of the auditory meatus rack is shrunk in opening, so that the problems of displacement and falling off of the implanted auditory meatus rack and hyperplasia of scars at both ends of the auditory meatus rack are effectively avoided and the utility model is suitable for treatment of auditory meatus stenosis or auditory meatus atresia caused by various reasons. The utility model has the obvious advantages of simple structure, easy implantation, easiness of taking out, high toughness and safety.
Description
This utility model relates to a kind of medical stent, particularly prevents and treat the narrow meatus acusticus dilator of auditory meatus.
In the prior art, the niti-shaped memorial alloy medical stent is widely used in esophageal stricture, biliary tract stenosis, urethral stricture, tracheal stenosis, fields such as angiostenosis, Wang Geping doctor of Beijing Jishuitan Hospital etc. and the Guo Jinfang of Beijing Non-Ferrous Metal Research General Academy professor, professors Zhu Ming etc. disclose a kind of niti-shaped memorial alloy external auditory meatus support for the treatment of the stricture of external auditory mea tus locking of burn back the 115th page of the 32nd volume second phase of " Chinese ear,nose ﹠ throat magazine " April in 1999, it is characterized by grid straight tube shape, its phase transition temperature is 30 ℃～33 ℃, the webmaster diameter is 6～8mm, length is 12～15mm, the grid filament diameter is 0.2mm, support is divided into two types on bare bracket and outer attached pellosil support, successfully the niti-shaped memorial alloy medical stent is used for the treatment of stricture of external auditory mea tus and has obtained good curative effect.But in clinical practical application, because grid straight tube shape external auditory meatus support does not meet the physiological requirement of auditory meatus, exist the external auditory meatus support easily to be shifted, to come off, particularly the people to cicatrix body constitution easily stimulates scar hyperplasia at the two ends of grid straight tube shape external auditory meatus support.
The purpose of this utility model is that a kind of novel meatus acusticus dilator will be provided, it not only meets the physiological requirement of auditory meatus, and the two ends that can overcome grid straight tube shape external auditory meatus support effectively easily stimulate the shortcoming of scar hyperplasia, be not only applicable to the treatment of the stricture of external auditory mea tus locking that causes because of burn, and after being applicable to various otology operations, the particularly narrow treatment of the auditory meatus that causes behind the operation on the middle ear.
The purpose of this utility model is achieved in that
Meatus acusticus dilator comprises metal gauze (1) and pellosil (2), it is characterized in that pellosil (2) upward forms the trapezoidal cylindrical tube structure similar to ear canal shapes attached to metal gauze (1).
---the metal gauze (1) of above-mentioned meatus acusticus dilator is with the grid duct shape structure of niti-shaped memorial alloy silk braiding or with the grid duct shape structure of niti-shaped memorial alloy light-wall pipe through laser engraving.Through the typing heat treatment for the geometry set as: the trapezoidal cylinder tube shape structure that trapezoidal cylindrical tube structure, two ends band arc close up, two ends for the flat trapezoidal cylinder tube shape structure that closes up etc.
---the head (3) or the afterbody (4) of above-mentioned described meatus acusticus dilator can have curved surface to close up.
---the metal gauze (1) of above-mentioned meatus acusticus dilator also can be made with other elastomeric material.
---the pellosil (2) of above-mentioned meatus acusticus dilator is used the medical silica-gel manufacturing usually, also can make with other flexible high molecular material, as polyamine fat or politef.
---the recovery temperature of above-mentioned niti-shaped memorial alloy is between 15 ℃～35 ℃, and the diameter of shape-memory alloy wire is between 0.001～0.7mm, and the thickness of niti-shaped memorial alloy light-wall pipe is between 0.001～0.7mm.
The meatus acusticus dilator of this utility model is owing to adopted metal gauze (1) to be coated in the pellosil (2) as skeleton, particularly adopted the trapezoidal cylindrical tube structure similar to ear canal shapes, and close up at the curved surface of the head (3) of meatus acusticus dilator or afterbody (4), avoided effectively after meatus acusticus dilator is implanted displacement, come off and in the problem of the two ends of meatus acusticus dilator scar hyperplasias, be applicable to the treatment of the narrow or atresia auris of auditory meatus that a variety of causes causes.Has obvious advantage simple in structure, that implantation is easy, convenient to remove, pliability is good, safe and reliable.
Concrete structure principle of the present utility model and operation principle are provided by following embodiment and accompanying drawing.
The structural representation of the trapezoidal cylindrical tube meatus acusticus dilator of Fig. 1 this utility model.
The A-A cutaway view of Fig. 2 Fig. 1.
The structural representation of the trapezoidal cylindrical tube meatus acusticus dilator that the two ends band arc of Fig. 3 this utility model closes up.
The B-B cutaway view of Fig. 4 Fig. 3.
The two ends of Fig. 5 this utility model are the structural representation of the flat trapezoidal cylindrical tube meatus acusticus dilator that closes up.
The C-C cutaway view of Fig. 6 Fig. 5.
The fundamental diagram of the meatus acusticus dilator of Fig. 7 this utility model.
1 is metal gauze among the above-mentioned figure, and 2 is pellosil, and 3 is the head of meatus acusticus dilator, and 4 is the afterbody of meatus acusticus dilator, and 5 is the meatus acusticus dilator of this utility model, and 6 is tissue.
Adopting recovery temperature is that 33 ℃, diameter are that the niti-shaped memorial alloy silk of 0.25mm is woven into trapezoidal cylindrical tube network, and the heat treatment of finalizing the design in mould has promptly obtained the metal gauze (1) of the meatus acusticus dilator of this utility model; In specific purpose tool, this metal gauze (1) is covered pellosil (2) then, promptly obtained the meatus acusticus dilator (5) of this utility model.
Adopting recovery temperature is that 33 ℃, thickness are that the niti-shaped memorial alloy light-wall pipe of 0.25mm becomes the cylindrical tube network through laser engraving, the heat treatment of in mould, finalizing the design, make it the trapezoidal cylindrical tube network that is shaped as of more than recovery temperature (as 37 ℃), after the polishing, promptly obtained the metal gauze (1) of the meatus acusticus dilator of this utility model; In specific purpose tool, this metal gauze (1) is covered pellosil (2) then, promptly obtained the meatus acusticus dilator (5) of this utility model.
During clinical use, in cold water,,, with operation tweezers or other specific purpose tool it is delivered in the auditory meatus then meatus acusticus dilator (5) compression of this utility model as 15 ℃, meatus acusticus dilator under the effect of body temperature (5) recovers design shape, struts the auditory meatus narrow.When implanting half a year to two year, after scar tissue is stable, with in the auditory meatus by the cold water cooling, make meatus acusticus dilator (5) deliquescing, can conveniently take out with tweezers or other specific purpose tool.
Claims (6)
1, meatus acusticus dilator comprises metal gauze (1) and pellosil (2), it is characterized in that pellosil (2) upward forms the trapezoidal cylindrical tube structure similar to ear canal shapes attached to metal gauze (1).
2, according to the described meatus acusticus dilator of claim 1, the metal gauze (1) that it is characterized in that described meatus acusticus dilator is with the grid duct shape structure of niti-shaped memorial alloy silk braiding or with the grid duct shape structure of niti-shaped memorial alloy light-wall pipe through laser engraving.
3,, it is characterized in that the head (3) of described meatus acusticus dilator or afterbody (4) can have curved surface to close up according to the described meatus acusticus dilator of claim 1.
4,, it is characterized in that the metal gauze (1) of described meatus acusticus dilator also can be made with other elastomeric material according to claim 1 or 2 described meatus acusticus dilators.
5, according to the described meatus acusticus dilator of claim 1, it is characterized in that the pellosil (2) of described meatus acusticus dilator is used the medical silica-gel manufacturing usually, also can make, as polyamine fat or politef with other flexible high molecular material.
6, according to the described meatus acusticus dilator of claim 1, the recovery temperature that it is characterized in that described niti-shaped memorial alloy is between 15 ℃～35 ℃, the diameter of shape-memory alloy wire is between 0.001～0.7mm, and the thickness of niti-shaped memorial alloy light-wall pipe is between 0.001～0.7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02248161 CN2572990Y (en) | 2002-09-19 | 2002-09-19 | Auditory meatus rack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02248161 CN2572990Y (en) | 2002-09-19 | 2002-09-19 | Auditory meatus rack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2572990Y true CN2572990Y (en) | 2003-09-17 |
Family
ID=33718845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02248161 Expired - Lifetime CN2572990Y (en) | 2002-09-19 | 2002-09-19 | Auditory meatus rack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2572990Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100387316C (en) * | 2002-09-19 | 2008-05-14 | 周星 | Meatus acusticus dilator |
-
2002
- 2002-09-19 CN CN 02248161 patent/CN2572990Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100387316C (en) * | 2002-09-19 | 2008-05-14 | 周星 | Meatus acusticus dilator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080514 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |