A kind of dedicated mandibular ramus inside drag hook of decorative surseryTechnical field
The present invention relates to drag hooks on the inside of a kind of dedicated mandibular ramus of decorative sursery, belong to the field of medical instrument technology.
Background technique
Lower jaw plastic operation is mainly Bilateral sagittal split ramus osteotomy, and operative approach is to need to use in operation in mouthThere are mandibular foramen in drag hook exposure visual area on the inside of mandibular ramus, drag hook active position lower section, and nervus alverlaris enters lower jaw mind from this holeThrough pipe.Drag hook easy damaged nervus alverlaris on the inside of mandibular ramus in the prior art, and drag hook handle inconvenience is held.To solve thisA little problems need to design corresponding technical solution and give and solve according to correlative study mandibular foramen apart from mandibular ramus front and rear edge distanceCertainly.
Summary of the invention
The present invention be directed to the shortcomings of the prior art, provide a kind of dedicated mandibular ramus inside drag hook of decorative sursery,Solve the problems, such as that drag hook may damage nervus alverlaris on the inside of mandibular ramus in the prior art, meet actual operation requirements.
To solve the above problems, the technical solution used in the present invention is as follows:
A kind of dedicated mandibular ramus inside drag hook of decorative sursery, comprising: preceding end hook, middle section bar and tail end drag hook handle, institutePreceding end hook, middle section bar and tail end drag hook handle is stated to be integrally formed；
The cross section of drag hook is round rectangle on the inside of the dedicated mandibular ramus of decorative sursery.
As an improvement of the above technical solution, radius 12.5mm round for 1/2 is seen in the preceding end hook front, and it is 1/2 that side, which is seen,Circle, radius 8mm；The tangent line and middle section bar of the preceding end hook and middle section bar junction are at 20 ° of angles.
As an improvement of the above technical solution, for the preceding end hook with a thickness of 3mm, the front end hook edge is mellow and full.
As an improvement of the above technical solution, two long side of middle section bar is parallel, length 80mm, width 25mm, thickDegree is 3mm；From the position junction 8mm from the front end to the position junction 48mm from the front end, indent, the indent are the middle section barRound rectangle, width 10mm, length 40mm, middle section bar edge is mellow and full, and the middle section bar is every without concave side long side10mm has scale.
As an improvement of the above technical solution, the tail end drag hook handle cross-section is round rectangle, the tail end drag hookHandle and middle section bar cramp angle are 120 °, and the tail end drag hook handle is hollow structure, inner cavity surface to outer surface with a thickness of 3mm, instituteState tail end drag hook decreased food be 130mm and, width 25mm parallel with two long sides at the bar junction to 20mm of middle section, with a thickness of3mm, the tail end drag hook handle is parallel to two long sides at 130mm from 22mm, width 35mm, with a thickness of 10mm.
As an improvement of the above technical solution, there are four ellipse is recessed on the tail end drag hook handle 22mm to 130mm sectionIt falls into, oval long axis is 25mm, short axle 20mm, spacing 1mm, and be recessed depth 5mm, and a nearest ellipse from the front end is recessedFall into away from tail end drag hook handle junction 30mm, the tail end drag hook handle edge is mellow and full.
In the present invention, the thickness of drag hook is the width of finger retractor cross circular section angular moment shape.
Compared with prior art, implementation result of the invention is as follows by the present invention: avoiding mandibular foramen, avoids damaging as far as possibleHurt nervus alverlaris, the scale in drag hook middle section is convenient for measuring and studies, and tail end drag hook handle conveniently firmly and is held, and meets realBorder use demand.
Detailed description of the invention
Fig. 1 is the main view of drag hook on the inside of the dedicated mandibular ramus of decorative sursery of the present invention；
Fig. 2 is the left view of drag hook on the inside of the dedicated mandibular ramus of decorative sursery of the present invention；
Fig. 3 is structural schematic diagram of the embodiment of the present invention.
Specific embodiment
Illustrate the contents of the present invention below in conjunction with specific embodiments.
It is as shown in Figure 1 to Figure 2: for hook structure schematic diagram on the inside of the dedicated mandibular ramus of decorative sursery of the present invention.
First part: drag hook on the inside of the dedicated mandibular ramus of decorative sursery, comprising: preceding end hook 1, middle section bar 2 and tail end drag hookHandle 3, preceding end hook 1, middle section bar 2 and tail end drag hook handle 3 are integrally formed；Layback in the dedicated mandibular ramus of decorative surseryThe cross section of hook is round rectangle.
Wherein, radius 12.5mm round for 1/2 is seen in preceding 1 front of end hook, and side is seen as 1/2 circle, radius 8mm；Preceding end hook 1 withThe tangent line and middle section bar 2 of 2 junction of middle section bar are at 20 ° of angles；For the preceding end hook 1 with a thickness of 3mm, preceding 1 edge of end hook is mellow and full.
2 liang of long sides of the middle section bar are parallel, length 80mm, width 25mm, with a thickness of 3mm；Middle section bar 2 is from from the front endThe junction position 8mm to the position junction 48mm from the front end indent, indent are round rectangle, width 10mm, length 40mm,Middle section bar 2 has scale without the every 10mm of concave side long side, and bar 2 edge in middle section is mellow and full.
Specifically, 3 cross section of tail end drag hook handle is round rectangle, and tail end drag hook handle 3 is with 2 angle of middle section bar120 °, tail end drag hook handle 3 is hollow structure, inner cavity surface to outer surface with a thickness of 3mm, and 3 length of tail end drag hook handle is 130mmAnd, width 25mm parallel with two long sides at 2 junction to 20mm of middle section bar, with a thickness of 3mm, tail end drag hook handle 3 is from 22mmTwo long sides are parallel at place to 130mm, width 35mm, with a thickness of 10mm；The Duan Shangyou from 22mm to 130mm of tail end drag hook handle 3Four oval depressions, oval long axis are 25mm, short axle 20mm, spacing 1mm, and be recessed depth 5mm, one recently from the front endOval depressions away from 3 junction 30mm of tail end drag hook handle, 3 edges of tail end drag hook handle are mellow and full.
Second part:
Bilateral sagittal split ramus osteotomy is carried out using drag hook on the inside of common mandibular ramus: according to conventional bilateral lower jawLower jaw mucous membrane is cut in the design of branch sagittal split osteotomy, separates exposure anterior border of ramus and the cheek side of grinding one's teeth in sleep of lower jaw the one or two sticks boneFilm attachment is moved under water under ramus of mandible medial periosteum and is separated on the inside of exposed ramus of mandible with lower jaw aperture, saws using reflex in mandibular foramenHorizontal osteotomy, the vertical osteotomy of anterior border of ramus and lower jaw cheek side cortex osteotomy on the inside of top row ramus of mandible；Using common lower jaw literDrag hook catches on mandibular ramus rear on the inside of branch, and exposure visual area should be noted when being that nervus alverlaris is easy to damage at this time.SoAnd when being changed for surgical experience deficiency or position of mandibular foramen (such as 4 position of mandibular foramen is too close to mandibular ramus rear),Drag hook be easy to cause interior alveolar nerve injury on the inside of common mandibular ramus.
Using drag hook on the inside of the dedicated mandibular ramus of decorative sursery of the present invention, or ramus of mandible insufficient for surgical experience is dissectedWhen form changes (such as 4 position of mandibular foramen is too close to mandibular ramus rear), it can be conducive to expose visual area, avoid lower alveolusNeurotrosis.
Operation method is as follows: cutting lower jaw mucous membrane, separation exposure according to the design of conventional Sagittal split ramus osteotomyAnterior border of ramus and lower jaw the one or two grind one's teeth in sleep cheek side stick periosteum attachment, move under water under ramus of mandible medial periosteum and separate exposed ramus of mandibleInside and mandibular foramen, using reflex saw on the inside of mandibular foramen top row ramus of mandible Horizontal osteotomy, the vertical osteotomy of anterior border of ramus andLower jaw is equivalent to lower jaw the one or two and grinds one's teeth in sleep the cheek side cortex osteotomy of intersection.End hook before the present invention is caught on into mandibular ramus rear(as shown in Figure 3), exerts oneself to opposite side upwards, can not only expose visual area, and can be avoided damage nervus alverlaris.
Actual production and application has been put into the product that this programme is protected at present, especially in the field of medical instrument technologyOn application achieve certain success, it is clear that it is beneficial for having confirmed the technical solution of the product, is to meet society need, it is also suitable for batch production and popularization and use.
The foregoing is a detailed description of the present invention in conjunction with specific embodiments, and it cannot be said that the present invention is specifically realIt applies and is only limitted to these explanations.For those skilled in the art to which the present invention belongs, before not departing from present inventive conceptIt puts, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to the scope of protection of the invention.