CN115192249B - External auditory canal pruning support - Google Patents
External auditory canal pruning support Download PDFInfo
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- CN115192249B CN115192249B CN202210730585.7A CN202210730585A CN115192249B CN 115192249 B CN115192249 B CN 115192249B CN 202210730585 A CN202210730585 A CN 202210730585A CN 115192249 B CN115192249 B CN 115192249B
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- external auditory
- tube body
- auditory canal
- carrying layer
- pipe
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Classifications
-
- 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
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
-
- 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
- A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2210/0004—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof bioabsorbable
-
- 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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
- A61F2250/0067—Means for introducing or releasing pharmaceutical products into the body
Abstract
The embodiment of the disclosure discloses a bracket capable of pruning an external auditory canal. The pruneable external auditory canal support comprises: the pipe body is provided with through holes which are arranged in an array manner, the pipe body comprises a plurality of pipe sections which are axially arranged, the pipe sections are connected together, and a first pre-break line is arranged between the adjacent pipe sections; and the medicine carrying layer is sleeved outside the tube body, and a porous structure is formed on the outer surface of the medicine carrying layer and is configured to contain medicine.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a bracket capable of pruning an external auditory canal.
Background
The human ear comprises three parts of an outer ear, a middle ear and an inner ear. There are generally problems with cysts, inflammation or tumors, etc. caused by congenital or late interventions in the outer and middle ear. In the face of a cyst or tumor, a doctor will typically remove the cyst or tumor, and after removal, the doctor needs to take medicine from the operation site and support the external auditory meatus correspondingly to restore the external auditory meatus to its original shape. The existing medication and support scheme is to insert cotton sliver, silica gel tube or alloy support adhered with the medicine into the external auditory canal to support the external auditory canal and medication the operation position.
However, the external auditory meatus of different patients are different in shape, and the supporting shape of the external auditory meatus is difficult to control by using the method, so that effective support cannot be formed; moreover, the size of the support structure is difficult to adjust to adapt to different patients, and finally the support structure and the affected part cannot be tightly attached, so that the support is invalid and the medication is invalid. In addition, still can produce some pus at postoperative affected part, adopts above-mentioned mode, is difficult to in time discharge outside the ear with pus, and the accumulated pus can cause secondary infection, is unfavorable for postoperative resumes.
Therefore, a new technical solution is needed to solve the above technical problems.
Disclosure of Invention
An object of the present invention is to provide a new technical solution for an external auditory canal clipping support.
According to one aspect of the present invention, a pruneable external auditory canal support is provided. The pruneable external auditory canal support comprises: the pipe body is provided with through holes which are arranged in an array manner, the pipe body comprises a plurality of pipe sections which are axially arranged, the pipe sections are connected together, and a first pre-break line is arranged between the adjacent pipe sections; and the medicine carrying layer is sleeved outside the tube body, and a porous structure is formed on the outer surface of the medicine carrying layer and is configured to contain medicine.
Optionally, the body includes latus rectum section and toper section, the toper section with the one end of latus rectum section is connected, the latus rectum section with the one end that the toper section is opposite is formed with first oral area, the toper section with the one end that the latus rectum section is opposite is provided with the second oral area, the slope of second oral area sets up, the angle of slope and the inclination phase-match of tympanic membrane, the second oral area is constructed and is used for the top to hold the tympanic membrane, the structure on medicine carrying layer with the structure phase-match of body.
Optionally, at least one of the drift diameter section and the taper section comprises a plurality of the tube sections.
Optionally, the pipe body is an integral structure, the first pre-break line is a groove along the circumferential direction of the outer surface of the pipe body, a plurality of grooves are formed in the pipe body, and the pipe body is divided into a plurality of pipe sections by the grooves.
Optionally, the tube body is a degradable material.
Optionally, the medicine carrying layer is made of electrostatic spinning membrane material, flocked fabric, non-woven fabric, gauze, plastic, rubber or silica gel.
Optionally, the drug-loaded layer is adhered, sprayed, dip coated or vapor deposited outside the tube body.
Optionally, a plurality of rows of through holes are provided on the pipe body, and the through holes of each row are arranged along the axial direction of the pipe body.
Optionally, a plurality of second pre-break lines extending along the axial direction are arranged on the outer surface of the tube body.
Optionally, the pipe body is an integral structure, and the second pre-breaking line is a groove along the axial direction of the outer surface of the pipe body.
In the embodiment of the disclosure, the tube body can be easily trimmed according to the sizes of the auditory meatus of different patients through the first pre-break line, so that the size of the tube body is adapted to the size of the auditory meatus, and then the external auditory meatus of the patients can be effectively supported. The outside cover at the body is equipped with carries the medicine layer, carries the medicine layer and can effectively hold corresponding therapeutic medicine through self porous structure, under the supporting role of body, carries the medicine layer and can closely paste and release the medicine with the affected part, makes the medicine like this can be accurate act on the affected part, is favorable to the recovery of postoperative affected part, has avoided the infection inflammation scheduling problem that causes because of taking medicine inadequately. In addition, the body can utilize the latus rectum structure of self to drop the pus or the scab that produce after the operation and in time discharge outside the ear, prevented the infection that the pus was piled up or scab was piled up and is led to the good recovery of auditory canal.
Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is an exploded view of an external auditory canal clipping support according to an embodiment of the present disclosure.
Fig. 2 is a schematic view of a tube according to an embodiment of the present disclosure.
Fig. 3 is an assembled schematic view of an external auditory canal clipping support according to an embodiment of the present disclosure.
Fig. 4 is a schematic view of another pruneable external auditory canal support according to an embodiment of the present disclosure.
Reference numerals illustrate:
1. A tube body; 2. a through hole; 3. a pipe section; 4. a first pre-break line; 5. a drug-carrying layer; 6. a first mouth; 7. a second mouth; 8. a second pre-break line; 9. a drift diameter section; 10. a conical section; 11. an air bag.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
According to one embodiment of the present disclosure, a pruneable external auditory canal support is provided. As shown in fig. 1, the pruneable external auditory meatus stand includes: a tube body 1 and a medicine carrying layer 5.
The tube body 1 is provided with through holes 2 which are arranged in an array. The pipe body 1 comprises a plurality of pipe sections 3 arranged in an axial direction. A plurality of pipe sections 3 are connected together. A first pre-break line 4 is provided between adjacent pipe sections 3. The medicine carrying layer 5 is sleeved outside the tube body 1. The outer surface of the drug-carrying layer 5 is formed with a porous structure. The porous structure is configured for containing a drug.
For example, through holes 2 arranged in an array are provided on the tube body 1. When the tube body 1 is placed in the external auditory canal, the affected part can be contacted with a part of air through the through hole 2, so that the external auditory canal is kept in a dry environment, and the problem of further inflammation and ulcer caused by the fact that the affected part is in a moist and wet state for a long time is solved.
In one example, the shape of the through hole 2 is quadrangular. For example, the through holes 2 may be rectangular, diamond-shaped, or parallelogram-shaped, etc.
In this embodiment, the shape of the through hole 2 is set to be the shape easy to deform, so that when the tube body 1 stretches into the external auditory canal, the tube body 1 is extruded and deformed according to the shape of the external auditory canal, and then the shape of the through hole 2 arranged on the tube body 1 can be adaptively adjusted to deform, so that the problem that when the tube body 1 deforms, the through hole 2 is broken at the position of the through hole 2 on the tube body 1 due to difficult deformation of the shape of the through hole 2, and then the external auditory canal bracket is damaged is avoided. The through hole 2 is provided in the above shape to further improve the safety and practicality of the external auditory meatus bracket.
The pipe body 1 comprises a plurality of pipe sections 3 arranged in an axial direction. A plurality of pipe sections 3 are connected together. A first pre-break line 4 is provided between adjacent pipe sections 3. The user can select 3 numbers of pipe sections to be cut according to the external auditory canal size of the patient, and cut the pipe body 1 along the track of the first pre-break line 4, so as to finally obtain the pipe body 1 matched with the external auditory canal size of the user.
The setting of line 4 is cut out in advance to first makes the cutting out of body 1 light convenient, can guarantee moreover that the reservation body that obtains after cutting out (need place in the inside body 1 of external auditory canal) and idle body (need not place in the inside body 1 of external auditory canal after cutting out) all keep complete body 1 form, has improved the accuracy of cutting out, finally makes the reservation body effectively exert supporting role in external auditory canal, and idle body still can be as body 1 deposit simultaneously, has practiced thrift the material cost.
The medicine carrying layer 5 is sleeved outside the tube body 1. The outer surface of the drug-carrying layer 5 is formed with a porous structure. The porous structure is configured for containing a drug. The porous structure of the outer side of the medicine carrying layer 5 can effectively contain medicines, and has good bearing effect on the medicines in powder, granular or liquid states, so that the medicines can be well attached to the medicine carrying layer 5, the phenomenon that the medicines fall off in the external auditory meatus due to mutual friction between the medicine carrying layer 5 and the external auditory meatus in the process that the pipe body 1 stretches into the external auditory meatus is avoided, and the medicines cannot act on actual affected parts is caused.
The medicine carrying layer 5 is sleeved outside the tube body 1, the medicine carrying layer 5 can effectively contain corresponding therapeutic medicines through a porous structure of the medicine carrying layer 5, and under the supporting effect of the tube body 1, the medicine carrying layer 5 can be tightly adhered to an affected part and release the medicines, so that the medicines can accurately act on the affected part, the recovery of the affected part after an operation is facilitated, and the problems of infection inflammation and the like caused by the fact that the medicines are not in place are avoided. The support of the external auditory canal by the tube body 1 can lead the skin of the affected part after operation to naturally recover under the slow release effect of the medicine and the support effect of the tube body 1, thereby avoiding the generation of scars. In addition, the tube body 1 can timely discharge pus or scab generated after operation out of the ear by utilizing the self drift diameter structure, so that the infection caused by accumulation of the pus or scab is prevented, and the good recovery of the auditory canal is facilitated.
In one example, as shown in fig. 4, an air bag 11 is further provided between the tube body 1 and the drug-carrying layer 5. The air bag 11 is sleeved on the tube body 1. The structure of the air bag 11 is matched with that of the medicine carrying layer 5. The inner wall of the air bag 11 is attached to the outer wall of the tube body 1. The outer wall of the air bag 11 is attached to the inner wall of the medicine carrying layer 5.
Under the condition that the air bag 11 is not inflated, the pipe body 1 stretches into the external auditory canal, when the pipe body 1 is placed at a proper supporting position, the air bag 11 is inflated, and as the structure of the air bag 11 is matched with that of the medicine carrying layer 5, the inflated air bag 11 can form a uniform jacking effect on the medicine carrying layer 5, so that the medicine carrying layer 5 can form good contact with the external auditory canal, and the accuracy and effectiveness of medicine use are improved.
The drug-carrying layer 5 can be disposed outside the tube body 1 by bonding, spraying, dip coating, or vapor deposition.
Under the condition that the medicine carrying layer 5 is arranged on the outer side of the tube body 1 in an adhesive mode, the assembly mode of the external auditory meatus bracket is specifically as follows: the balloon 11 is sleeved on the outer wall of the tube body 1, and then the drug-carrying layer 5 is directly adhered to the balloon 11 to form the final shape of the external auditory meatus bracket.
The external auditory meatus stent further comprises a film layer under the condition that the drug-carrying layer 5 is provided outside the tube body 1 by spray coating, dip coating or vapor deposition. The film layer is provided on the outer wall of the balloon 11. The film layer matches the structure of the balloon 11. The material of the film layer may be an elastic material, such as plastic, rubber, or the like.
The drug-loaded layer 5 is formed on the film layer by spray coating, dip coating or vapor deposition. Thus, the medicine carrying layer 5 can be uniformly formed on the film layer outside the air bag 11 instead of being directly formed on the air bag 11, the problem of uneven coating on the air bag 11 which is directly formed is avoided, and the problem of bursting the medicine carrying layer 5 when the air bag 11 is inflated and expanded which is directly formed on the air bag 11 is avoided.
Under the condition that the air bag 11 is inflated, the inflated air bag 11 can simultaneously form a uniform jacking effect on the film layer and the medicine carrying layer 5, so that the medicine carrying layer 5 can form good contact with the external auditory meatus, and the accuracy and the effectiveness of medicine use are improved.
In one example, as shown in fig. 2, the tubular body 1 includes a drift diameter section 9 and a tapered section 10. The conical section 10 is connected to one end of the drift diameter section 9. The end of the drift diameter section 9 opposite the conical section 10 is formed with a first mouth 6. The conical section 10 is provided with a second mouth 7 at the end opposite the drift diameter section 9. The second mouth 7 is arranged obliquely. The inclination angle is matched with the inclination angle of the tympanic membrane. The second mouth 7 is configured for holding the tympanic membrane. The structure of the medicine carrying layer 5 is matched with that of the tube body 1.
It should be noted that the angle between the external auditory canal and the tympanic membrane of the human ear is not 90 degrees, but is an acute angle smaller than 90 degrees. In this embodiment, the tubular body 1 comprises a drift diameter section 9 and a conical section 10. The conical section 10 is provided with a second mouth 7 at the end opposite the drift diameter section 9. The second mouth 7 is arranged obliquely. The inclination angle is matched with the inclination angle of the tympanic membrane. Therefore, when the conical section of the tube body 1 stretches into the external auditory canal, the second opening 7 can be well attached to the acute angle between the tympanic membrane and the external auditory canal, accurate medicine application of the medicine on the medicine carrying layer 5 is facilitated, and in addition, the tube body 1 completely matched with the external auditory canal can well support the external auditory canal.
In addition, the tube body 1 is provided with the drift diameter section 9 and the taper section 10, and the second opening is provided at one end of the taper section 10, so that the drift diameter section 9 can form good effective support to the external auditory meatus (external auditory meatus far from tympanic membrane), while the taper section 10 can closely fit with the internal external auditory meatus (external auditory meatus close to tympanic membrane) and form good support.
If all set up body 1 as latus rectum section 9, the one end at latus rectum section 9 directly sets up the slope oral area, when stretching into the external auditory canal with body 1 like this, the slope oral area of direct setting on the latus rectum section 9 probably can the secondary injury to the tympanic membrane, set up body 1 as latus rectum section 9 and toper section 10, set up the second oral area 7 of slope on the toper section 10, the toper section 10 can play the cushioning effect to the contact of body 1 and tympanic membrane, can let the toper section slowly be close to the tympanic membrane earlier, the second oral area 7 of slope that sets up on the toper section 10 and tympanic membrane are pressed close to slowly afterwards, be favorable to improving the security of operation.
As shown in fig. 3, the structure of the drug-carrying layer 5 matches the structure of the tube body 1. In this embodiment, the structure of the tube 1 is itself perfectly matched to the morphology of the external auditory meatus, and the structure of the drug-carrying layer 5 is matched to the structure of the tube 1. Therefore, the medicine carrying layer 5 can be completely attached to the tube body 1, and under the condition that the tube body 1 stretches into the external auditory meatus, the medicine carrying layer 5 can be completely matched with the external auditory meatus in shape, so that accurate medicine taking of medicines on the medicine carrying layer 5 is facilitated, and the effectiveness of postoperative medicine taking recovery is improved.
In one example, at least one of the drift diameter section 9 and the tapered section 10 includes a plurality of tube segments 3.
For example, it may be that the path section 9 comprises one pipe section 3, and the taper section 10 comprises a plurality of pipe sections 3, to finally form the pipe body 1; or alternatively
It may be that the conical section 10 comprises one pipe section 3, the drift diameter section 9 comprises a plurality of pipe sections 3, and finally the pipe body 1 is formed; or alternatively
It is possible that both the drift diameter section 9 and the conical section 10 comprise a plurality of tube sections 3, which ultimately form the tube body 1.
It should be noted that, in both the pipe section 3 of the tapered section 10 and the pipe section 3 of the through-diameter section 9, each pipe section 3 may have the same height or may have different heights. The pipe sections 3 constituting the tapered section 10 may be pipe sections 3 of the same height or different heights, and similarly, the pipe sections 3 constituting the drift diameter section 9 may be pipe sections 3 of the same height or different heights, which are not limited herein, and may be selected by those skilled in the art according to actual needs.
For example, the axial dimension of the drift diameter section 9 consisting of a plurality of pipe sections 3 is 14mm-16mm. The radial dimension of the drift diameter section 9 formed by the pipe sections 3 is 8mm-15mm. The axial dimension of the conical section 10 consisting of a plurality of tube sections 3 is 12mm-14mm. In this embodiment, the axial dimensions of the plurality of tube segments 3 are identical, the axial dimensions of the tube segments 3 being 2mm-4mm. In the above size range, the size fit of the drift diameter section 9 and the conical section 10 can ensure that the tube body 1 is well attached to the external auditory meatus form, and is beneficial to the good supporting effect of the tube body 1. The axial dimensions of the pipe sections 3 are the same, so that the first pre-break lines 4 existing on the reserved pipe body are uniformly distributed on the pipe body 1, the supporting strength of the pipe body 1 is ensured, and effective supporting can be formed on the external auditory meatus.
For example, the ratio of the axial dimensions of the drift diameter section 9 to the conical section 10 is 5:3. and the drift diameter section 9 and the conical section 10 are each made up of a plurality of tube sections 3 of different axial dimensions. Under the proportion, the size fit of the drift diameter section 9 and the conical section 10 can ensure that the pipe body 1 is well attached to the external auditory meatus shape, and is favorable for the good supporting effect of the pipe body 1. The drift diameter section 9 and the conical section 10 are each made up of a plurality of tube sections 3 of different axial dimensions. The cutting selectivity of the tube body 1 can be improved, so that the tube body 1, whether the diameter section 9 or the conical section 10, can be well cut according to actual needs so as to adapt to the auditory canal shapes of more different patients.
In one example, the tube body 1 is of unitary construction. The first pre-break line 4 is a groove along the circumference of the outer surface of the pipe body 1. A plurality of grooves are provided on the pipe body 1. The plurality of grooves divide the pipe body 1 into a plurality of pipe sections 3.
For example, the tube body 1 is of unitary construction. The pipe body 1 is provided with a plurality of grooves along the circumferential direction of the outer surface of the pipe body 1, the grooves are first pre-broken lines 4, and the pipe body 1 is divided into a plurality of pipe sections 3 by the grooves. Therefore, the manufacturing process of the pipe body 1 is relatively simple, the first pre-break line 4 can be formed only by arranging the groove on the outer side of the pipe body 1, and a user can cut along the track of the first pre-break line 4 to obtain the proper size of the pipe body 1.
The first pre-break line 4 is a groove along the circumference of the outer surface of the pipe body 1. Since the first pre-break line 4 is formed by a groove on the outer surface of the tube body 1, this will result in a radial dimension of the tube body 1 at the groove being smaller than the radial dimension of the tube body 1 at the non-groove. When a user cuts along the groove, a moderate chamfer is formed between the pipe body at the cut and the pipe body which is not cut originally, so that burrs generated at the cut can be prevented from damaging the auditory meatus, and the use safety of the external auditory meatus bracket is improved.
The manner of providing the grooves may be laser etched, or may be preformed by a mold, or may be other suitable manner, without limitation, and may be selected by those skilled in the art according to actual needs.
In one example, the tube body 1 is a degradable material.
The degradable biological polymer material is material which is gradually degraded into low molecular weight compound or monomer through hydrolysis, enzymolysis and other processes in organisms, and the degradation product can be discharged out of the body or can participate in normal metabolism in the body to disappear.
The degradable material has good biocompatibility. Biocompatibility should include: tissue, blood, and mechanical compatibility. The degradable biological material is generally subjected to material design and surface interface modification according to the environmental characteristics of a human body, so that the compatibility between the implant material and tissues can be effectively improved, and the due physical and mechanical properties of the material are ensured. The implant material has stable and reliable physical and mechanical properties, is easy to process and form, is convenient for disinfection and sterilization, is nontoxic and heat-source-free, is not carcinogenic and is not teratogenic, and the like. The degradation period of the material temporarily implanted into the body is controllable, the degradation products are nontoxic monomers which can be absorbed or metabolized or the degradation monomers of the chain segment degradable high molecular material are mostly small molecules which can be absorbed by the human body, the degradable biological ceramic can be degraded into particles, molecules or ions in the body, the particles, molecules or ions gradually disappear by using cells as raw materials, and the degradable metal material can form ionic states to be absorbed and utilized by the human body.
For example, in the present embodiment, the material of the tube body 1 is a polylactic acid material, and the polylactic acid (Polylactic acid, PLA), also called polylactide, is a polyester polymerized from lactic acid as a raw material.
Polylactic acid has good biocompatibility and absorbability. Polylactic acid can be hydrolyzed by acid or enzyme in human body to generate lactic acid. Lactic acid, a metabolic product of cells, can be further metabolized by enzymes in the body to produce CO 2and H2O. Therefore, the polylactic acid is nontoxic and harmless to human bodies, and has better biocompatibility and biological absorbability. Polylactic acid can be used as a biological material implanted in the human body.
Polylactic acid has good physical processability. Polylactic acid is used as a thermoplastic polymer material, has good plasticity and physical processing property, higher melting point and crystallinity, good elasticity and flexibility and good thermoforming property. The polylactic acid material can be molded by extrusion, stretching, injection blow molding, etc., as in the case of polymer materials such as polypropylene (PP), polystyrene (PS) and polyphenylene oxide resin (PPO).
In the embodiment, the tube body 1 is made of polylactic acid material, and the good biocompatibility and absorbability of the polylactic acid material can not cause any toxicity and rejection to human body on the premise of forming effective support to the external auditory canal. In addition, the polylactic acid material has good plasticity and physical processability, can easily prepare the initial form of the required pipe body 1 according to the requirement, and can carry out processing and etching on the pipe body 1, thereby simplifying the production process flow and reducing the production cost.
Of course, the degradable material is not limited to polylactic acid, but can also be polycaprolactone, polyurethane, polyethylene glycol; or of the natural type: proteins (collagen, fibrin, silk, etc.), polysaccharides (starch, alginate, chitin, hyaluronic acid derivatives, etc.), natural polyesters, etc. The material of the degradable material can be selected by a person skilled in the art according to actual needs.
In one example, the drug-loaded layer 5 is an electrospun film, a fleece, a nonwoven, gauze, plastic, rubber, or silica gel.
For example, the drug-carrying layer 5 is an electrospun film, a fleece, a nonwoven fabric, a gauze, a plastic, a rubber or a silica gel. The medicine carrying layer 5 is made of the materials, and can carry out good bearing function on medicines by utilizing the porous structure on the surface of the medicine carrying layer.
In addition, the materials have plasticity and softness, and under the condition that the tube body 1 stretches into the external auditory meatus, the medicine carrying layer 5 can ensure that the external auditory meatus or other parts in the ear are not damaged at first, so that the safety of the operation is improved. Wherein the electrostatic spinning membrane material, the flocking cloth, the non-woven fabric and the gauze are porous materials. The porous material is capable of containing a drug. Materials such as plastics, rubber, and silica gel require surface processing to form a porous structure to accommodate the drug.
In addition, the medicine carrying layer 5 can be better attached to the external auditory meatus shape under the supporting action of the tube body 1, so that the effective accuracy of medicine application is improved.
The cost of the material is low, and the material is nontoxic and harmless to human body, thereby being beneficial to reducing the production cost of the medicine carrying layer 5.
In one example, the drug-loaded layer 5 is bonded, spray coated, dip coated or vapor deposited outside the tube body 1.
For example, the medicine carrying layer 5 may be adhered to the outside of the tube body 1, so that the adhesion mode does not damage the self structure of the medicine carrying layer 5, and the reliable connection between the medicine carrying layer 5 and the tube body 1 can be ensured.
For example, the adhesive is racemic polylactic acid, levo-polylactic acid or polyvinylpyrrolidone.
The medicine carrying layer 5 can also be sprayed outside the tube body 1. The method comprises the following steps: the pipe body 1 is placed in a device to be sprayed, the medicine is coated on the surface of the pipe body 1 through ultrasonic atomization spraying, and the medicine carrying layer 5 can be arranged outside the pipe body 1 through airing or drying. The medicine carrying layer 5 formed by spraying can be uniformly distributed on the outer side of the pipe body 1, and then the porous structure on the medicine carrying layer 5 can uniformly contain medicines, so that the medicine use is accurate and effective.
In one example, a plurality of rows of through holes 2 are provided in the pipe body 1. The through holes 2 of each row are arranged in the axial direction of the pipe body 1.
For example, a plurality of rows of through holes 2 are provided in the pipe body 1, and the through holes 2 of each row are aligned in the axial direction of the pipe body 1. So make through-hole 2 can set up on whole body 1 dispersedly, under the condition that body 1 stretched into the external auditory canal, dispersed through-hole 2 can get into more air, and then makes the internal dry environment of keeping of external auditory canal, is favorable to preventing that the affected part from being in moist state and causing further inflammation ulcer problem for a long time.
In one example, a plurality of second pre-break lines 8 extending in the axial direction are provided on the outer surface of the tube body 1.
For example, a plurality of second pre-break lines 8 extending in the axial direction are provided on the outer surface of the pipe body 1. The user can cut the tube 1 along the trajectory of the second pre-break line 8 and thereby change the radial dimensions of the tube 1 to accommodate the canal morphology of different patients to form a good effective support.
The setting of second pre-break line 8 makes the tailorring of body 1 light convenient, can guarantee moreover that the reservation body that obtains after tailorring (need place in the inside body 1 of external auditory canal) and idle body (need not place in the inside body 1 of external auditory canal after tailorring) all keep complete body 1 form, has improved the accuracy of tailorring, finally makes the reservation body effectively exert supporting role in the external auditory canal, and idle body still can be as body 1 deposit simultaneously, has practiced thrift the material cost.
In one example, the tube body 1 is of unitary construction. The second pre-break line 8 is a groove along the axial direction of the outer surface of the tube body 1.
For example, the tube body 1 is of unitary construction. The second pre-break line 8 is a groove along the axial direction of the outer surface of the tube body 1. Therefore, the manufacturing process of the pipe body 1 is relatively simple, the second pre-break line 8 can be formed only by arranging the groove on the outer surface of the pipe body 1, and a user can cut along the track of the second pre-break line 8 to obtain the proper size of the pipe body 1.
The second pre-break line 8 is a groove along the axial direction of the outer surface of the tube body 1. Since the second pre-break line 8 is formed by a groove on the outer surface of the tube body 1, this will result in a radial dimension of the tube body 1 at the groove being smaller than the radial dimension of the tube body 1 at the non-groove. When a user cuts along the groove, a moderate chamfer is formed between the pipe body at the cut and the pipe body which is not cut originally, so that burrs generated at the cut can be prevented from damaging the auditory meatus, and the use safety of the external auditory meatus bracket is improved.
The manner of providing the grooves may be laser etched, or may be preformed by a mold, or may be other suitable manner, without limitation, and may be selected by those skilled in the art according to actual needs.
The foregoing embodiments mainly describe differences between the embodiments, and as long as there is no contradiction between different optimization features of the embodiments, the embodiments may be combined to form a better embodiment, and in consideration of brevity of line text, no further description is given here.
While certain specific embodiments of the invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (9)
1. A pruneable external auditory canal support, comprising:
the pipe body is provided with through holes which are arranged in an array manner, the pipe body comprises a plurality of pipe sections which are axially arranged, the pipe sections are connected together, a first pre-break line is arranged between the adjacent pipe sections, and a plurality of second pre-break lines which extend along the axial direction are arranged on the outer surface of the pipe body; and
The medicine carrying layer is sleeved outside the tube body, and a porous structure is formed on the outer surface of the medicine carrying layer and is used for containing medicines.
2. The trimmable external auditory canal support of claim 1, wherein the tube body comprises a drift diameter section and a tapered section, the tapered section is connected with one end of the drift diameter section, a first opening is formed at one end of the drift diameter section opposite to the tapered section, a second opening is provided at one end of the tapered section opposite to the drift diameter section, the second opening is obliquely arranged, the oblique angle is matched with the oblique angle of the tympanic membrane, the second opening is configured to support the tympanic membrane, and the structure of the drug-carrying layer is matched with the structure of the tube body.
3. The trimmable external auditory canal support of claim 2, wherein at least one of the drift diameter section and the tapered section comprises a plurality of the tube sections.
4. The pruneable external auditory canal support according to claim 1, wherein the tube body is of an integral structure, the first pre-break line is a groove along the circumferential direction of the outer surface of the tube body, a plurality of grooves are arranged on the tube body, and the plurality of grooves divide the tube body into a plurality of tube sections.
5. The pruneable external auditory canal support of claim 1, wherein the tube is a degradable material.
6. The pruneable external auditory canal support according to any one of claims 1-5, wherein the drug-carrying layer is an electrospun membrane, a fleece, a nonwoven, gauze, plastic, rubber or silicone.
7. The trimmable external auditory canal support according to any of claims 1-5, wherein the drug-loaded layer is bonded, sprayed, dip-coated or vapor deposited outside the tube body.
8. The pruneable external auditory canal support according to any one of claims 1-5, wherein a plurality of rows of said through holes are provided on said tube body, said through holes of each row being aligned in an axial direction of said tube body.
9. The pruneable external auditory canal support according to claim 1, wherein the tube body is of unitary construction, and the second pre-break line is a groove along an axial direction of an outer surface of the tube body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210730585.7A CN115192249B (en) | 2022-06-24 | 2022-06-24 | External auditory canal pruning support |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210730585.7A CN115192249B (en) | 2022-06-24 | 2022-06-24 | External auditory canal pruning support |
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| CN115192249B true CN115192249B (en) | 2024-04-30 |
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| EP0447719A1 (en) * | 1990-03-05 | 1991-09-25 | Minnesota Mining And Manufacturing Company | Device for extended delivery of pharmacologically active agents to the ear |
| CN101822578A (en) * | 2010-03-29 | 2010-09-08 | 张发明 | Composite type orifice bracket |
| CN204379545U (en) * | 2015-01-08 | 2015-06-10 | 中国医学科学院北京协和医院 | A kind of chronicity grommet |
| CN210812483U (en) * | 2019-08-29 | 2020-06-23 | 南通市第一人民医院 | Ear canal belt cleaning device is used in nursing of otolaryngology branch of academic or vocational study |
| CN113509628A (en) * | 2021-04-21 | 2021-10-19 | 河南科技大学第一附属医院 | Medicine injection appliance for otolaryngological nursing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030033016A1 (en) * | 2001-08-07 | 2003-02-13 | Gyrus Group Plc | Implant sheath |
| GB2449114A (en) * | 2007-05-11 | 2008-11-12 | Sentient Medical Ltd | Middle ear implant with piezoelectric actuator acting on stapes footplate |
| US9510976B2 (en) * | 2014-04-29 | 2016-12-06 | Abbott Cardiovascular Systems Inc. | Devices and methods for treatment of the Eustachian tube and sinus cavity |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0447719A1 (en) * | 1990-03-05 | 1991-09-25 | Minnesota Mining And Manufacturing Company | Device for extended delivery of pharmacologically active agents to the ear |
| CN101822578A (en) * | 2010-03-29 | 2010-09-08 | 张发明 | Composite type orifice bracket |
| CN204379545U (en) * | 2015-01-08 | 2015-06-10 | 中国医学科学院北京协和医院 | A kind of chronicity grommet |
| CN210812483U (en) * | 2019-08-29 | 2020-06-23 | 南通市第一人民医院 | Ear canal belt cleaning device is used in nursing of otolaryngology branch of academic or vocational study |
| CN113509628A (en) * | 2021-04-21 | 2021-10-19 | 河南科技大学第一附属医院 | Medicine injection appliance for otolaryngological nursing |
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| CN115192249A (en) | 2022-10-18 |
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