CN201727611U

CN201727611U - Formed nasal prosthesis

Info

Publication number: CN201727611U
Application number: CN2010202684648U
Authority: CN
Inventors: 叶明�
Original assignee: SUOKANG MEDICAL MATERIAL CO Ltd SHANGHAI
Current assignee: SUOKANG MEDICAL MATERIAL CO Ltd SHANGHAI
Priority date: 2010-07-22
Filing date: 2010-07-22
Publication date: 2011-02-02
Anticipated expiration: 2020-07-22

Abstract

The utility model relates to a formed nasal prosthesis, which is an expanded polytetrafluoroethylene nasal prosthesis provided with an L-shaped integrally formed structure, and comprises a nasal columella, a nasal tip and a nasal dorsum. The L-shaped nasal prosthesis has high biocompatibility, is provided with a polished prosthesis structure with a smooth surface, which is more close to a human nose structure, and can be directly implanted into a human body with slight modifications, so that the operation time is greatly shortened, and the risk of improper prosthesis correction is reduced; and as the nasal tip has small tensile force, the risk of postoperative infection is also greatly reduced.

Description

A kind of molding nose prosthesis

Technical field

This utility model relates to a kind of nose prosthesis, particularly, relates to a kind of expanded PTFE molding nose prosthesis.

Background technology

In anaplasty, nose prosthesis is implanted under the nasal dorsal fascia, can improve the human body face image.

At present, the nose prosthesis of domestic extensive use has two kinds, i.e. silicone rubber nose prosthesis and expanded PTFE nose prosthesis.Certainly, also occurred composite nose prosthesis now, promptly the part of silica gel prosthese covers expanded PTFE.(as: CN2481295Y, human body nose shaping implant).But this Technology Need uses binding agent or suturing skill that two kinds of compositions are fixed on one.

Though silicone rubber is easy to engraving, molding, but biocompatibility is not as expanded PTFE, postoperative is prone to prostheses migration, and prosthese is retained for a long time in vivo, as time passes, it is big that the tension force of nose portion can become, allow rubescent gradually, the attenuation of patient's nose portion skin, even ulceration occurs, prosthese exposes, thereby need carry out the augmentation rhinoplasty second time, this has increased patient's misery and financial burden.For this reason, (CN201453417U) introduced the making of perforating nose prosthesis.But this technology does not fundamentally solve prosthese and histiocytic consistency problem.

Expanded PTFE be by politef through expanded, produce " joint and fiber " structure, its microcellular structure can allow histiocyte open into, playing must fixation, has avoided prostheses migration; Prove that by a large amount of clinical trials expanded PTFE does not have carcinogenic and teratogenesis, demonstrates excellent biological compatibility, do not form fiber kystis after the implantation, can intactly take out in case of necessity.So being widely used in soft tissue, it fills.But because its special physicochemical character, the expanded PTFE nose prosthesis that provides in the market is semi-finished product, promptly need the doctor in operation, to carve and sew up prosthese, thereby this has increased corresponding operating time and prosthese and is exposed to the airborne time and has increased the probability that infects, and prosthese may occur simultaneously and carve problem improperly.Integrated expanded PTFE nose prosthesis is vastly to ask beautiful person and cosmetic surgeons urgently required.

The utility model content

The purpose of this utility model provides a kind of expanded PTFE nose prosthesis of directly implant into body, and overcoming in such operation at present, thereby prosthese needs engraving, stitching causes bacterial infection, operating time is long and repair problem improperly.

In order to achieve the above object, this utility model provides a kind of molding nose prosthesis, and this molding nose prosthesis is for having the expanded PTFE nose prosthesis of " L " type integrated formed structure, and this nose prosthesis comprises nose pillar, nose and bridge of the nose.

Angle [alpha] between described nose pillar and the bridge of the nose is acute angle.

Angle [alpha] between described nose pillar and the bridge of the nose is 85～90 °.

Described molding nose prosthesis integral body is polished into the borrowed structure with slick and sly surface.

Expanded PTFE is to be formed through special processing technique by polytetrafluoroethyldispersion dispersion resin, and the ultrastructure of " knot and fiber " is arranged, and sees through control knot spacing and can induce autologous tissue's cell inwardly to grow.Therefore, use expanded PTFE as the prosthese packing material and the organization healing mode that is not both of material maximum in the past.Be that expanded PTFE is the organization healing mode that tissue is grown into, traditional silicone rubber then is the organization healing mode of fibers encapsulation.Therefore, comprise that with this material the soft tissue of augmentation rhinoplasty operation fills operation and have outward appearance nature true to nature, good biocompatibility, prosthese are not shifted, degeneration, advantage that complication is few.While is very limited owing to the cell tissue amount of the micropore of growing into again, therefore, and also can be very difficult when taking out this material if desired.

The integrated expanded PTFE nose prosthesis that this utility model provides, good biocompatibility, this prosthese is " L " type, be polished into slick and sly body, more approach the human nasal structure, modify a little, get final product direct implant into body, overcome in present such operation, prosthese needs engraving, sews up, thereby causes bacterial infection, operating time is long and repair problem improperly.And this nose prosthesis handles integrated prosthese for adopting the expanded PTFE raw material through mould, and nose portion tension force is less relatively, and the probability of postoperative infection is little.

Therefore, the integrated expanded PTFE nose prosthesis that this utility model provides has good biocompatibility, through modifying directly implant into body a little, can significantly reduce operating time and reach prosthese correction risk improperly, and the probability of postoperative infection is little.

Description of drawings

Fig. 1 is the structural representation of a kind of molding nose prosthesis of the present utility model.

Fig. 2 is the structural representation of the semi-finished product 4 of a kind of molding nose prosthesis of the present utility model.

The specific embodiment

Below in conjunction with Fig. 1, describe this utility model preferred embodiment in detail.

As shown in Figure 1, a kind of molding nose prosthesis that this utility model provides, this molding nose prosthesis is for having the expanded PTFE nose prosthesis of " L " type integrated formed structure, and this nose prosthesis comprises nose pillar 1, nose 2 and bridge of the nose 3.

Angle [alpha] between described nose pillar 1 and the bridge of the nose 3 is acute angle.

Preferably, the angle [alpha] between described nose pillar 1 and the bridge of the nose 3 is 85～90 °.

Described molding nose prosthesis integral body is polished into the prosthese with slick and sly surface.

A kind of molding nose prosthesis that this utility model provides is to be raw material with the politef, stretchedly makes it expanded, and again through die-cut, simple finishing adds thermal finalization and makes.Concrete steps are as follows:

Step 1, with a block length 85～90mm, wide 10～12mm, the expanded PTFE cuboid of high 6～8mm cuts into the semi-finished product that the cross section is an isosceles trapezoid, its upper base face length 5～6mm;

Step 2 is carried out die-cut with the described isosceles trapezoid semi-finished product of step 1, makes semi-finished product 4, as shown in Figure 2;

Step 3 with semi-finished product 4, through adding thermal finalization, makes integrated nose prosthesis finished product, wherein, nose pillar 1 long 7～8mm, bridge of the nose 3 long 50～70mm, the angle [alpha] between nose pillar 1 and the bridge of the nose 3 is 85～90 °, as shown in Figure 1.

In use, the doctor only needs the concrete condition according to the patient, carve slightly, the molding nose prosthesis that just can directly this utility model be provided is implanted in patient's body, so reduced the time of engraving prosthese, and prosthese is one-body molded, do not need stitching step, operating time shortens, and nose portion tension force is little, the probability that infects is little, the more natural beauty of postoperative nose profile.

Although content of the present utility model has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to restriction of the present utility model.After those skilled in the art have read foregoing, for multiple modification of the present utility model with to substitute all will be conspicuous.Therefore, protection domain of the present utility model should be limited to the appended claims.

Claims

1. a molding nose prosthesis is characterized in that, this molding nose prosthesis is for having the expanded PTFE nose prosthesis of " L " type integrated formed structure, and this nose prosthesis comprises nose pillar (1), nose (2) and bridge of the nose (3).

2. molding nose prosthesis as claimed in claim 1 is characterized in that, the angle [alpha] between described nose pillar (1) and the bridge of the nose (3) is acute angle.

3. molding nose prosthesis as claimed in claim 2 is characterized in that, the angle [alpha] between described nose pillar (1) and the bridge of the nose (3) is 85～90 °.

4. molding nose prosthesis as claimed in claim 1 is characterized in that, described molding nose prosthesis integral body is polished into the borrowed structure with slick and sly surface.