CN207666620U - Condylar fracture resets drag hook - Google Patents

Abstract

Condylar fracture resets drag hook, including handle, connecting rod and hook, and connecting rod one end connects handle, the other end connects hook, and hook is dashed forward with condyle and is adapted to, the extrados round blunt of hook, cross section is rectangle oblate or that quadrangle is circular arc chamfering, and the connecting rod of hook and handle is end, and the other end is head end；Hook is tangent with connecting rod, and connecting rod is bent in obtuse angle, and the bending part rounding off of connecting rod, hook and connecting rod are curved towards two side directions respectively, hook, connecting rod and handle one.Hook is bent by tablet, and the head end of hook is smooth circular arc.The utility model has the advantages of capable of exposing surgical field of view in art, restoring the prominent shape of condyle and protect peripheral vessels, nerves and muscles.

Description

Condylar fracture resets drag hook

Technical field

The utility model belongs to field of oral cavity medical equipment, and especially a kind of condylar fracture resets drag hook.

Background technology

The incidence of jaw fracture accounts for about the 35% of jaw surface damage.Mandibular position protrudes, and is subject to be damaged and cause to fracture Incidence is high.Hitting exactly joint portion, mental foramen area, angle of mandible and neck of condyle portion becomes the predilection site of fracture of mandible.Condylar fracture The 20%-30% of fracture of mandible is accounted for, clinical manifestation is mainly：Local soft tissue swelling and pain, limitation of mouth opening, occluding relation are disorderly Unrest and Mandibular Deviation.Mandibular CT examination and remporomandibular joint magnetic resonance examination can specify type and the pass of condylar fracture on row Save the displacement of disk.Inwardly lower displacement prominent apparent to condyle, angulation deformity be more than 45 °, ramus of mandible height obviously shorten 5mm, be closed multiple Position cannot obtain good occluding relation person, should be regarded as operative indication.Operative Principle is：It is exposed and is fractured using suitable notch The broken ends of fractured bone resets and makees Titanic micro-plates after ensuring occluding relation normalization.But in the course of surgery, due to the fact that, condyle is prominent Fracture site is difficult to reset completely, also is difficult to fix even if resetting, and returns in articular fossa of temporal bone after resetting completely and also increases Operating difficulty.Reason is：1. the patient of condylar fracture is because of the combined injury with craniocerebral trauma or other positions, some condylar fractures Fragment even to fossa cranii media shift, when patient experiences stable disease to Oral and Maxillofacial Surgery treats, the time be generally wound two weeks with Afterwards, wherein March, the condylar fracture broken ends of fractured bone was at this time because occluding relation disorder and limitation of mouth opening carry out medical patient after being no lack of wound Malunion forms poroma, resets difficulty, can not confirm its normal appearance；2. although there is joint space dilator and various in art Drag hook, but to correctly restoring the not substantive help of the prominent shape of condyle；3. the tensile stress area of neck of condyle portion fracture is in neck of condyle portion Rear nearby has abundant blood vessel, if damage intracranial artery, anthemorrhagic difficulty are in peril of one's life；4. traditional operation, in order to complete Exposure art area, need to pull neighbouring soft tissue, facial nerve,temporal and rami zygomatici for a long time drawing easy damaged and cause volume line disappear and The not congruent facial paralysis symptom of eye closing；5. even if the reseting fracture broken ends of fractured bone, whens row Titanic micro-plates, which will be difficult to fixation, to cause fracture site to move Position.

Condyle of mandible pincers are more common condylar fracture auxiliary reset instruments in current clinic, and the instrument is using conventional The design of bone holding forcep type, using two rostrals clamping displacement bone blocks, and be auxiliarily fixed.However in clinic, due to the prominent pincers of condyle It is larger to clamp beak, and condylar fracture surgical field of view is limited, the prominent pincers of condyle are usually stretched into without space, and bone block, or clamping bone can not be clamped It can not adjustment direction or ideal reset after block.Muscle is accidentally clipped to sometimes even if space is larger, when bone block is clamped causes doctor source Sexual trauma.The smaller and osteoporosis further, since condyle is dashed forward, excessive chucking power are sometimes prone to that bone block is caused to be split again.

Invention content

Surgical field of view can be exposed in art the purpose of this utility model is to provide a kind of, restore the prominent shape of condyle and protect week Enclose blood vessel, the condylar fracture of nerves and muscles resets drag hook.

Condylar fracture resets drag hook, including handle, connecting rod and hook, and connecting rod one end connects handle, other end connection Hook, hook are dashed forward with condyle and are adapted to, the extrados round blunt of hook, and cross section is rectangle oblate or that quadrangle is circular arc chamfering, hook The connecting rod of son and handle is end, and the other end is head end；It is characterized in that：Hook is tangent with connecting rod, and connecting rod bending is in Obtuse angle, the bending part rounding off of connecting rod, hook and connecting rod are curved towards two side directions respectively, hook, connecting rod and handle one Body.Hook is bent by tablet, and the head end of hook is smooth circular arc.

Further, connecting rod bending is in 120 °.Therefore the axial direction of the tangential and handle of drag hook is in 120 ° of angles.

Further, the prominent total length for resetting drag hook of condyle is 180mm, vertical height 72mm.

Further, the end setting tail of handle hooks, and tail is hooked with drag hook in the same direction, the cambered surface round blunt that tail hooks.

When the utility model is used, adjusting occluding relation, the prominent all fracture sites of exposure condyle draw prominent reset of condyle Hook crosses the merging of neck of condyle portion according to radian, fracture site is substantially put into above drag hook, and handle is exerted oneself, and condylar fracture can be complete The form for resetting and keeing relative stability, whens row Titanic micro-plates, will not shift, and protect the blood vessel and nerve of surrounding, avoid Nerve significantly pulls, and operation wound is made to be preferably minimized, and decreases the risk of operation, reduces operating time, improves hand The safety of art.

The utility model has the following advantages：

1, the configuration design that the utility model is dashed forward according to normal condyle, hook match with the anatomic form of condyle of mandible, Art area can be conveniently entered and the condylar fracture broken ends of fractured bone is resetted, handle firmly generates inside extruding force to keep condyle prominent solid It is fixed to be convenient for implantation Titanium miniplate and screw.

2, the utility model aims at condylar fracture design, and the prominent drag hook that resets of entire condyle is formed with the bending place of connecting rod as branch Point lever, handle exert oneself buccally side pressing can make condylar fracture reset and holding position form stable, can effective protection week The blood vessel and nerve enclosed reduces the incidence of paralysis behind operation, increases the safety of operation.

3, there is the utility model compact enough mechanical strengths, shape to fix not pliable, practical safety, letter Singly, conveniently, highly practical.

4, condylar fracture reset drag hook can be disposable practical, practicality is repeated after can also sterilizing, entire drag hook is without structure Sterilization processing is conveniently done at dead angle.Drag hook can make trade edition according to the shape of standard condyle of mandible, also can root Personalized customization is done according to the normal Condylar morphology of patient.

Description of the drawings

Fig. 1 is the schematic diagram of the utility model.

Fig. 2 be the utility model catch on condyle it is prominent when schematic diagram.

Fig. 3 is that visual angle from the top down sees that the utility model catches on the prominent schematic diagram of condyle.

Fig. 4 is that visual angle from inside to outside sees that the utility model catches on the prominent schematic diagram of condyle.

Specific implementation mode

As shown in Figs 1-4, condylar fracture resets drag hook, including handle 1, connecting rod 2 and hook 3, the connection of 2 one end of connecting rod Handle 1, the other end connect hook 3, and hook 3 is dashed forward with condyle and is adapted to, the extrados round blunt of hook 3, and cross section is oblate or quadrangle For the rectangle of circular arc chamfering, hook 3 and the connecting rod 2 of handle 1 are end, and the other end is head end；Hook 3 and connecting rod 2 are tangent, Connecting rod 2 is bent in obtuse angle, and the bending part rounding off of connecting rod 2, hook 3 and connecting rod 2 are curved towards two side directions respectively, hook 3,1 one of connecting rod 2 and handle.

Hook 3, connecting rod 2 and handle 1 are integrally formed, and ensure that there is drag hook enough mechanical strengths, shape fixation to be not easy Bending deformation.

The hook and interconnecting piece of connecting rod, the bending part of the connecting rod and equal round blunt mistake of the interconnecting piece of connecting rod and handle It crosses, entire drag hook conveniently does sterilization processing without structure dead angle.Therefore, the prominent reset drag hook of the condyle can be disposable, Practicality is repeated after can sterilizing.Hook can make trade edition according to the shape of standard condyle of mandible, also can be according to trouble The normal Condylar morphology of person does personalized customization.

The configuration design that hook is dashed forward according to normal condyle, hook match with the anatomic form of condyle of mandible, can be easily It is resetted into art area and to the condylar fracture broken ends of fractured bone.

Connecting rod 2 is bent, to be formed using the bending place of connecting rod 2 as the lever of fulcrum.In use, drag hook is made to catch on condyle It is prominent, it exerts a force to handle 1, which is transmitted to drag hook by the leverage of connecting rod 2 and forms moment of flexure, and very little can be used at handle 1 Power, easily make very much condyle is prominent to reset and holding position form stable, keep condyle prominent fixed convenient for implantation Titanium miniplate and screw, can have Effect protects the blood vessel and nerve of surrounding, reduces incidence paralysed below of performing the operation, increases the safety of operation.

Hook 3 and connecting rod 2 are curved towards two side directions respectively, and if drag hook is towards a left side, connecting rod 2 is towards the right side, to enable drag hook It is prominent smoothly to catch on condyle.And when hook 3 catches on condyle and dashes forward, connecting rod 2 does not stop operation sight, and operator and assistant is made to have space behaviour Make, and avoids other surgical instruments（Such as dural retractor）It is in contact with the prominent above tissue of condyle.Hook 3 is prominent according to normal condyle The shape fabricating on head, hook 3 and condyle are prominent to be fitted closely, and make the condyle of fracture is prominent can be interior fixed in a limited space, merging It is not shifted when anchor studs or lag screw.Handle 1 can be exerted oneself to greatest extent using hand-held biomechanical principle is met.

The bending of connecting rod 2 is in 120 °.Therefore the axial direction of the tangential and handle 1 of drag hook is in 120 ° of angles.Condyle is prominent to reset drag hook Total length be 180mm, vertical height 72mm.

The end setting tail of handle 1 hooks, and tail is hooked with drag hook in the same direction, the cambered surface round blunt that tail hooks.When operation, finger is used It resists tail and hooks the force that handle end can be realized, facilitate force.Because instrument can become non-on operating table because contacting blood Ordinary light is slided, and tail hook upwarps, because rubber sleeve is detached from handle when can avoid firmly.Tail hook may be set to be tail ring, play anti-slip Purpose.

Content described in this specification embodiment is only enumerating for the way of realization conceived to utility model, this practicality is new The protection domain of type is not construed as being only limitted to the concrete form that embodiment is stated, the scope of protection of the utility model also and In those skilled in the art according to the utility model design it is conceivable that equivalent technologies mean.

Claims (5)

1. condylar fracture resets drag hook, including handle, connecting rod and hook, connecting rod one end connects handle, other end connecting hook Son, hook are dashed forward with condyle and are adapted to, the extrados round blunt of hook, and cross section is rectangle oblate or that quadrangle is circular arc chamfering, hook Connecting rod with handle is end, and the other end is head end；It is characterized in that：Hook is tangent with connecting rod, and connecting rod bending is in blunt Angle, the bending part rounding off of connecting rod, hook and connecting rod are curved towards two side directions respectively, hook, connecting rod and handle one.

2. condylar fracture as described in claim 1 resets drag hook, it is characterised in that：Hook is bent by tablet, hook Head end is smooth circular arc.

3. condylar fracture as claimed in claim 2 resets drag hook, it is characterised in that：Connecting rod bending is in 120 °.

4. condylar fracture as claimed in claim 3 resets drag hook, it is characterised in that：The prominent total length for resetting drag hook of condyle is 180mm, vertical height 72mm.

5. the condylar fracture as described in one of claim 1-4 resets drag hook, it is characterised in that：The end setting tail of handle hooks, Tail is hooked with drag hook in the same direction, the cambered surface round blunt that tail hooks.