CN101579266B - Prosthesis of posterior wall of external auditory canal - Google Patents
Prosthesis of posterior wall of external auditory canal Download PDFInfo
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- CN101579266B CN101579266B CN200910086887XA CN200910086887A CN101579266B CN 101579266 B CN101579266 B CN 101579266B CN 200910086887X A CN200910086887X A CN 200910086887XA CN 200910086887 A CN200910086887 A CN 200910086887A CN 101579266 B CN101579266 B CN 101579266B
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- external auditory
- auditory meatus
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- face
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Abstract
The invention discloses prosthesis of a posterior wall of an external auditory canal, comprising a stent of the posterior wall of the external auditory canal. The stent is curved prosthesis, the thickness of which can be adjusted according to the requirements; the radian of the stent just inosculates the residual anterior wall, upper wall and lower wall of the external auditory canal after open mastoidectomy, thus forming the complete external auditory canal. The prosthesis of the invention can be used for reconstructing the external auditory canal in the open mastoidectomy or any other surgeries requiring external auditory canal reconstruction, thus recovering/imitating the shapes and functions of the external auditory canal and mastoid.
Description
Technical field
The invention belongs to the engineering in medicine field, more specifically, relate to a kind of prosthesis of posterior wall of external auditory canal.
Background technology
According to whether keeping the external auditory meatus rear wall, radical mastoidectomy can be divided into wall type, and (canal wall up is CWU) with open (canal wall down, CWD) two kinds of art formulas.
Intact wall type radical mastoidectomy has intactly kept the external auditory meatus rear wall, helps preserving audition, but also so often is difficult to the intratympanic focal cleaning in back totally, causes postoperative to recur easily, in the practice, the situation generation of repeatedly recurrence and operation is repeatedly often arranged.
The basic principle of open radical mastoidectomy is to remove tympanum, tympanic antrum and intramastoid all focuses, and makes tympanic antrum, mastoid cavity and tympanum form a cavity that communicates with external auditory meatus.When adopting open surgery, must remove the external auditory meatus rear wall, therefore after the removing focus, promptly enable to carry out ossicular chain reconstruction, tympanoplasty, but, certainly will influence audition because the 26S Proteasome Structure and Function of external auditory meatus is damaged for thorough removing focus.
Summary of the invention
The object of the present invention is to provide a kind of prosthesis of posterior wall of external auditory canal, thereby it is used for behind open radical mastoidectomy rebuilding the external auditory meatus rear wall and overcomes the deficiencies in the prior art, realizes both thoroughly having removed focus, preserves the ideal effect of audition again as far as possible.
Prosthesis of posterior wall of external auditory canal of the present invention comprises wall bracket after the external auditory meatus, and wall bracket is the arc prosthese of alternative external auditory meatus rear wall after this external auditory meatus." arc " used herein is also nonessential to be a proper part with circle of same curvature, and it also comprises the arc with certain radian.The radian of arc prosthese is to make this prosthese just in time fit with carrying out external auditory meatus antetheca, upper wall and lower wall residual behind the open radical mastoidectomy, to form complete external auditory meatus.This prosthese can be made by Medpor or any material of knowing that is fit to known in the art or following, and its thickness can be regulated as required.
After the described external auditory meatus wall bracket have medial surface, with medial surface opposite external side face, external auditory meatus face and mastoid cavity face.Wherein medial surface is provided with semicircle gap in the front upper place at contiguous residual external auditory meatus upper wall place, and this gap is equivalent to the aditus ad antrum, is the passage that is communicated with tympanum and mastoid cavity.Whole external auditory meatus face at external auditory meatus rear wall support adjacent medial side face is provided with the projection edge, and this projection edge is equivalent to tympanic ring and is beneficial to supporting heavy drum film, and the width of this projection edge is advisable to be enough to supporting tympanum.The middle and lower part of wall bracket medial surface is provided with groove after the external auditory meatus, and the size of this groove can the size according to facial ridge be made amendment in art.After this groove was smeared biogum, it can stably be stuck in the surface of facial ridge, thereby kept the stable of prosthesis.Outside the mastoid cavity face of external auditory meatus rear wall support adjacent lateral side face, be provided with the tunnel, yet the present invention is not limited thereto, when wall bracket is thicker after the external auditory meatus, this tunnel can penetrate in lateral surface after the described external auditory meatus in the wall bracket, and when wall bracket after this external auditory meatus approached, rebuilds the external auditory meatus spaciousness, this tunnel can be given prominence in external auditory meatus by the external auditory meatus of described back wall bracket.Use the memorial alloy sheet to pass this tunnel, and pass this two ends, tunnel, because the memorial alloy sheet expands under body temperature, its two ends of stretching out can be clamped between residual the external auditory meatus upper wall and lower wall, thereby further keep the stable of prosthesis.It will be understood by those skilled in the art that except memorial alloy any well known in the prior art or following other material that can be used for supporting of knowing also can be used for prosthesis of the present invention.Be provided with recess in the mastoid cavity face of wall bracket after the external auditory meatus, when needing, this recess can make the insertion portion of mastoid cavity obturator snap in further to stablize wall bracket after the external auditory meatus.
Selectively, prosthesis of posterior wall of external auditory canal of the present invention also comprise with external auditory meatus after the chimeric mastoid cavity obturator of wall bracket.The mastoid cavity obturator can be made by Medpor or any material of knowing that is fit to known in the art or following, is full of the gas room in it, is equivalent to the effect of mastoid air cell, or with reality material filling mastoid cavity.The mastoid cavity obturator can be square, cuboid or other irregular shape, it is extended with insertion portion at nearly external auditory meatus rear surface place, this insertion portion can snap in the recess of the mastoid cavity face of wall bracket after the described external auditory meatus, fill mastoid cavity damaged in, further stablize wall bracket after the external auditory meatus.
Utilize prosthesis of posterior wall of external auditory canal of the present invention can recover/simulate the form and the function of external auditory meatus, mastoid process.
The present invention also aims to provide the application of a kind of prosthesis of posterior wall of external auditory canal in open radical mastoidectomy, it can be used for rebuilding the external auditory meatus rear wall behind open radical mastoidectomy.
The present invention also aims to provide a kind of prosthesis of posterior wall of external auditory canal to carry out application in the operation that the external auditory meatus rear wall rebuilds at needs.
The present invention also aims to provide a kind of mastoid cavity obturator to carry out application in the operation of mastoid cavity filling at needs.
Description of drawings
Below in conjunction with accompanying drawing, describe prosthesis of posterior wall of external auditory canal of the present invention in detail, wherein:
When Fig. 1 illustrates human body and lies on the back, the left side of head view;
Fig. 2 illustrates the sketch map that prior art has been used the external auditory meatus cross section of wall type radical mastoidectomy;
Fig. 3 illustrates the sketch map of the external auditory meatus cross section of using open radical mastoidectomy;
Fig. 4 illustrates the schematic perspective view according to prosthesis of posterior wall of external auditory canal of the present invention;
Fig. 5 illustrates the sketch map of mastoid cavity face of the prosthesis of posterior wall of external auditory canal of Fig. 4; With
Fig. 6 illustrates the axonometric chart with the chimeric mastoid cavity obturator of the prosthesis of posterior wall of external auditory canal of Fig. 4.
The specific embodiment
When Fig. 1 illustrates human body and lies on the back, the left side of head view.In one embodiment of the invention, be example with people left side ear, prosthesis of posterior wall of external auditory canal of the present invention is described.
Fig. 2 and 3 illustrates the sketch map of having used the external auditory meatus cross section behind wall type radical mastoidectomy and the open radical mastoidectomy respectively, and wherein external auditory meatus is made up of antetheca 2, upper wall 3, rear wall 1 and lower wall 4.For succinct purpose, only show associated component parts such as tympanic antrum 5, temporo line 6, mastoid cavity 7 among the figure.
Fig. 4 illustrates wall bracket after the external auditory meatus of the prosthesis of posterior wall of external auditory canal according to the present invention, it is an arc prosthese 10, the radian of this arc prosthese 10 is to make that residual external auditory meatus antetheca 2, upper wall 3 and lower wall 4 just in time coincide behind itself and the open radical mastoidectomy, thereby forms complete external auditory meatus.This arc prosthese 10 can be made by Medpor or any material of knowing that is fit to known in the art or following, and its thickness can be regulated as required, as long as it can become rigid supporting prostheses.Arc prosthese 10 comprises medial surface 12, lateral surface 13, external auditory meatus face 14 and mastoid cavity face 15.Wherein the front upper place of medial surface 12 (that is, contiguous residual external auditory meatus upper wall 3 places) is provided with semicircular gap 16, and this gap 16 is equivalent to the aditus ad antrum, is the passage that is communicated with tympanum and mastoid cavity; The whole external auditory meatus face 14 of adjacent medial side face 12 is provided with projection edge 17, is equivalent to tympanic ring, is beneficial to supporting heavy drum film.The width of this projection edge 17 is advisable to be enough to supporting tympanum, and this width is no more than 5mm usually, to avoid influencing the tympanum function.
As shown in Figure 4, the middle and lower part of medial surface 12 is provided with groove 18, and this groove 18 can stably be stuck in the surface of facial ridge 101, thereby keeps the stable of prosthesis.Size according to common facial ridge well known in the art prepares groove 18, and can the size according to facial ridge 101 make amendment to the size of groove 18 in art.By smear biogum to groove itself and facial ridge are tightened.
The mastoid cavity face 15 that Fig. 4 shows at adjacent lateral side face 13 is provided with tunnel 19, yet the present invention is not limited thereto.When arc prosthese 10 was thicker, this tunnel 19 can penetrate in the arc prosthese 10 in lateral surface 13, and thin when this arc prosthese 10, rebuild external auditory meatus when spacious, this tunnel 19 can be outstanding in external auditory meatus in the external auditory meatus face 14.Use the memorial alloy sheet to pass this tunnel 19, and pass this 19 two ends, tunnel, this tunnel 19 has any feasible cross sectional shape, for example, arc, square, rectangle etc., with and width can be as big as the width of whole prosthesis, can reach 25mm; Thickness is the feasible unlikely stricture of external auditory mea tus degree of being that causes in two ends that stretches out, as is no more than 3mm.Because the memorial alloy sheet expands under body temperature, and its two ends of stretching out can be clamped between residual the external auditory meatus upper wall 3 and lower wall 4, further to keep the stable of prosthesis.Should point out that well known by persons skilled in the art or any material with supporting role of knowing in the future all within the scope of the invention.
Further, Fig. 5 illustrates the sketch map according to the another embodiment of the mastoid cavity face of the prosthesis of posterior wall of external auditory canal of Fig. 4.As seen from Figure 5, can be provided with recess 20 in this prosthesis mastoid cavity face 15, this recess cross section can be Any shape, for example rectangle, square, irregular polygon etc.In another embodiment, this recess 20 can be for a plurality of.When needing, the insertion portion 21a of mastoid cavity obturator 21 can snap in this recess 20, the size of this recess 20 can be in art according to the size of mastoid cavity obturator insertion portion 21a make amendment (or the size of insertion portion 21a made amendment according to the size of recess 20), so that insertion portion 21a firmly is connected with recess 20, thereby fill mastoid cavity damaged in, further stablize wall bracket after the external auditory meatus.Obviously, the quantity of the insertion portion 21a of mastoid cavity obturator 21 should be consistent with recess 20.
Can make with Medpor or any material of knowing that is fit to known in the art or following with the mastoid cavity obturator 21 that wall bracket after the external auditory meatus is chimeric, be full of the gas room in it, be equivalent to the effect of mastoid air cell, or reality material filling mastoid cavity.The mastoid cavity obturator can be square, cuboid or other irregular shape, and this obturator size matches its anteroposterior diameter and mastoid cavity size and is beneficial to keep the stable of prosthese according to the preparation of common mastoid cavity size.In the practice, can in art, prune the mastoid cavity obturator, when anteroposterior diameter is not enough, can cuts from this obturator top and get fritter and carry out filling, so that it adapts to requirement of different patients better according to the size of mastoid cavity.Locate to stretch out an insertion portion 21a at mastoid cavity obturator 21 nearly external auditory meatus rear surfaces (the mastoid cavity face 15 of wall bracket after being external auditory meatus of the present invention), as mentioned above, this insertion portion 21a can snap in the recess 20 of mastoid cavity face 15, fill mastoid cavity damaged in, further stablize wall bracket after the external auditory meatus.Fig. 6 shows the sketch map of an embodiment of the insertion portion 21a of mastoid cavity obturator 21.
During use, only need to smear biogum, make its surface that stably is stuck in facial ridge, to keep the stable of prosthesis to groove 18; Because the memorial alloy sheet expands, thereby the two ends that this memorial alloy sheet stretches out can be clamped between postoperative residual the external auditory meatus upper wall 3 and lower wall 4, thereby keep the stable of prosthesis under body temperature; Perhaps the insertion portion 21a of mastoid cavity obturator 21 can also be snapped in the recess 20 of the mastoid cavity face 15 of arc prosthese 10, further stablize arc prosthese 10.
Should point out that accompanying drawing only is used for illustrating better the present invention, component shape wherein, ratio be only for schematically, and do not limit the present invention in any way.The size that should be understood that each parts of prosthesis of posterior wall of external auditory canal of the present invention in addition is all to match with common and common auditory meatus well known by persons skilled in the art, mastoid cavity, neural crest, and in practice, those skilled in the art can suitably revise its size.
Prosthesis of posterior wall of external auditory canal of the present invention is implanted to the patient that carries out behind the open radical mastoidectomy or carries out the patient that external auditory meatus is rebuild because of congenital atresia of external auditory meatus, bony auditory canal are damaged, can rebuild the structure of external auditory meatus and recover its function.
Prosthesis of posterior wall of external auditory canal of the present invention also can be used for other any needs to carry out in the operation that external auditory meatus rebuilds, and for example, wound or tumor post-operation cause the bony auditory canal wall damaged.
Prosthesis of posterior wall of external auditory canal of the present invention is kept prosthesis stability with adopting multiple mode, stage construction.
Prosthesis of posterior wall of external auditory canal of the present invention is easy to use, but the prosthesis of industrial prepared in batches has same or analogous morphosis, only need the concrete condition according to each patient repair a little in art, can directly use.
Above the present invention has exemplarily been described, replacement scheme, modification, modification, improvement that generally use this area of knowing in the future but those skilled in the art can associate those well known in the prior art or present possibly can't predictions and the technical scheme that is equal to basically with the form of the specific embodiment.Therefore, claims are intended to the technical scheme that contains these replacement schemes, modification, improvement and be equal to basically.
Claims (10)
1. prosthesis of posterior wall of external auditory canal, comprise wall bracket after the external auditory meatus, wall bracket is to be arcual prosthese on perpendicular to the cross section of external auditory meatus direction after the described external auditory meatus, external auditory meatus antetheca, upper wall and lower wall residual behind the radian of this arc prosthese and the open radical mastoidectomy just in time coincide, thereby form complete external auditory meatus, it is characterized in that wall bracket comprises after the described external auditory meatus:
Medial surface is included in the gap at contiguous external auditory meatus upper wall place, and this gap is used to be communicated with tympanum and tympanic antrum and mastoid cavity; And at the groove of medial surface middle and lower part, this groove can stably be stuck in the surface of facial ridge;
With medial surface opposite external side face;
The external auditory meatus face, it is provided with the projection edge at adjacent medial side face place and is beneficial to supporting heavy drum film; With
The mastoid cavity face is included in the tunnel at adjacent lateral side face place.
2. prosthesis of posterior wall of external auditory canal, comprise wall bracket after the external auditory meatus, wall bracket is to be arcual prosthese on perpendicular to the cross section of external auditory meatus direction after the described external auditory meatus, external auditory meatus antetheca, upper wall and lower wall residual behind the radian of this arc prosthese and the open radical mastoidectomy just in time coincide, thereby form complete external auditory meatus, it is characterized in that wall bracket comprises after the described external auditory meatus:
Medial surface is included in the gap at contiguous external auditory meatus upper wall place, and this gap is used to be communicated with tympanum and tympanic antrum and mastoid cavity; And at the groove of medial surface middle and lower part, this groove can stably be stuck in the surface of facial ridge;
With medial surface opposite external side face, comprise the tunnel that penetrates wherein;
The external auditory meatus face, it is provided with the projection edge at adjacent medial side face place and is beneficial to supporting heavy drum film; With
The mastoid cavity face relative with the external auditory meatus face.
3. prosthesis of posterior wall of external auditory canal, comprise wall bracket after the external auditory meatus, wall bracket is to be arcual prosthese on perpendicular to the cross section of external auditory meatus direction after the described external auditory meatus, external auditory meatus antetheca, upper wall and lower wall residual behind the radian of this arc prosthese and the open radical mastoidectomy just in time coincide, thereby form complete external auditory meatus, it is characterized in that wall bracket comprises after the described external auditory meatus:
Medial surface is included in the gap at contiguous external auditory meatus upper wall place, and this gap is used to be communicated with tympanum and tympanic antrum and mastoid cavity; And at the groove of medial surface middle and lower part, this groove can stably be stuck in the surface of facial ridge;
With medial surface opposite external side face;
The external auditory meatus face, it is provided with the projection edge at adjacent medial side face place and is beneficial to supporting heavy drum film, and comprises by external auditory meatus outstanding tunnel in the external auditory meatus; With
The mastoid cavity face relative with the external auditory meatus face.
4. each described prosthesis of posterior wall of external auditory canal among the claim 1-3 is characterized in that, also comprises recess on the described mastoid cavity face.
5. each described prosthesis of posterior wall of external auditory canal among the claim 1-3 is characterized in that, passes backing material in the described tunnel, and the two ends that make this backing material stretch out are clamped between residual external auditory meatus upper wall and the lower wall.
6. each described prosthesis of posterior wall of external auditory canal among the claim 1-3 is characterized in that, described groove stably is stuck in the surface of facial ridge by biogum.
7. the described prosthesis of posterior wall of external auditory canal of claim 4 is characterized in that, passes backing material in the described tunnel, and the two ends that make this backing material stretch out are clamped between residual external auditory meatus upper wall and the lower wall.
8. the described prosthesis of posterior wall of external auditory canal of claim 4 also comprises the mastoid cavity obturator chimeric with the recess of mastoid cavity face.
9. the described prosthesis of posterior wall of external auditory canal of claim 8 is characterized in that, passes backing material in the described tunnel, and the two ends that make this backing material stretch out are clamped between residual external auditory meatus upper wall and the lower wall.
10. claim 8 or 9 described prosthesis of posterior wall of external auditory canal is characterized in that, described mastoid cavity obturator snaps in the recess of mastoid cavity face by insertion portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910086887XA CN101579266B (en) | 2009-06-10 | 2009-06-10 | Prosthesis of posterior wall of external auditory canal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910086887XA CN101579266B (en) | 2009-06-10 | 2009-06-10 | Prosthesis of posterior wall of external auditory canal |
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| CN101579266A CN101579266A (en) | 2009-11-18 |
| CN101579266B true CN101579266B (en) | 2011-03-23 |
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| CN200910086887XA Expired - Fee Related CN101579266B (en) | 2009-06-10 | 2009-06-10 | Prosthesis of posterior wall of external auditory canal |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107019582A (en) * | 2017-05-05 | 2017-08-08 | 南方医科大学 | Modeling method, manufacture method and the adopted ear of a kind of adopted ear of damage-free type |
| IT202000000217A1 (en) * | 2020-01-09 | 2021-07-09 | Univ Pisa | Prosthetic device for tympanoplasty reconstruction |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4556122A (en) * | 1981-08-31 | 1985-12-03 | Innovative Hearing Corporation | Ear acoustical hearing aid |
| US4608051A (en) * | 1981-04-29 | 1986-08-26 | Ernst Leitz Wetzlar Gmbh | Auditory canal wall prosthesis and process for producing same |
| CN201160922Y (en) * | 2008-02-05 | 2008-12-10 | 中国人民解放军总医院 | Artificial tympanic ring |
-
2009
- 2009-06-10 CN CN200910086887XA patent/CN101579266B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4608051A (en) * | 1981-04-29 | 1986-08-26 | Ernst Leitz Wetzlar Gmbh | Auditory canal wall prosthesis and process for producing same |
| US4556122A (en) * | 1981-08-31 | 1985-12-03 | Innovative Hearing Corporation | Ear acoustical hearing aid |
| US4556122B1 (en) * | 1981-08-31 | 1987-08-18 | ||
| CN201160922Y (en) * | 2008-02-05 | 2008-12-10 | 中国人民解放军总医院 | Artificial tympanic ring |
Non-Patent Citations (1)
| Title |
|---|
| 冯秀兰.Medpor与PTFE重建耳廓直入式耳道中耳一期成形治疗先天性耳畸形的术后护理.《全国五官科护理学术交流暨专题讲座会议》.2005, * |
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| CN101579266A (en) | 2009-11-18 |
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