A kind of three concave surfaces spiral cutter head of breast biopsy and rotary-cut probeTechnical field
The invention belongs to medical instruments field.It is related to a kind of medical puncture syringe needle or cutter head, and in particular to a kind of breastRoom biopsy and the spiral cutter head in three concave surfaces of rotary-cut probe.
Background technology
Breast biopsy, that is, breast biopsy pathologic finding, refer to local excision, pincers take, puncture needle inhale and scratchThe operation method such as scrape, extract, taking pathological tissues to carry out pathologic finding by patient's live body, to determine the method for diagnosis.Carry outBreast biopsy, it is necessary to use breast biopsy and rotary-cut probe.
At present, the general breast biopsy of in the market and rotary-cut probe are generally all that the silent logical breast biopsy of american wheat is visited with rotary-cutPin or U.S.'s Ahmedabad breast biopsy and rotary-cut probe.Wherein, the silent logical breast biopsy of american wheat is that two concave surfaces are common with rotary-cut probePoint of a knife, U.S.'s Ahmedabad breast biopsy and rotary-cut probe are the common point of a knife in three concave surfaces, and their insertion principle is all pushed ahead.ThisSample, before focus is inserted into can by through health tissues push focus to, not only resistance is big, and can extrude focus, therefore,Big in the presence of insertion advance resistance, insertion smoothness is low, the shortcomings of influenceing focus.Moreover, these breast biopsies and rotary-cut probe are allFor external product, monopolized for a long time by external import producer, price is high, adds medical treatment cost.
In view of the above-mentioned technological deficiency of prior art, there is an urgent need to develop a kind of new breast biopsy and rotary-cut probe.
The content of the invention
It is an object of the invention to overcome shortcoming present in prior art, there is provided a kind of breast biopsy and rotary-cut probeThe spiral cutter head in three concave surfaces, it can reduce the advance resistance of insertion property apparatus, lift the smoothness of insertion；And foreign countries can be brokenThe monopolization of manufacturer, reduces cost.
To achieve these goals, the present invention provides following technical scheme：
The spiral cutter head in three concave surfaces of a kind of breast biopsy and rotary-cut probe, it includes bit body and connecting seat, and it is specialSign is, formed with three structure identical concave surfaces on the bit body, each formed with parabolic on the rear portion of the concave surfaceWire type aids in sword, also, spiral main sword is formed on the front portion of each concave surface, altogether formed with three on the bit bodyThe parabolic auxiliary sword and three spiral main swords, also, three spiral main swords are in the bit bodyTop assemble and form tip, the torsion angle of each spiral main sword is 75 degree.
Further, wherein, the length of the spiral main sword is l=4mm.
Further, wherein, the length of the side of the parabolic auxiliary sword is 12mm.
Yet further, wherein, the diameter D=5.2mm of the bit body.
In addition, wherein, the diameter d=4.6mm of the connecting seat.
Further, wherein, the length L=8.56mm of the bit body.
Further, wherein, the concave surface is obtained by the way of material is removed from the bit body and its tableSurface roughness is 1.6.
With existing breast biopsy compared with the cutter head of rotary-cut probe, the three of breast biopsy of the invention and rotary-cut probe are recessedSurface helix formula cutter head has following advantageous effects：
1st, the main sword of its front end is spiral main sword, is advanced when being inserted using rotary, with pushing away for existing cutter headEnter formula advance to compare, it can reduce the advance resistance of insertion property apparatus, lift the smoothness of insertion.
2nd, the design of the spirally torsion angle and cutter head overall dimensions of main sword is passed through so that its advance resistance is minimum, insertionIt is most smooth, and reduce extruding of the health tissues to focus so that biopsy is easily and accurate.
3rd, it can break monopolization of the foreign vendor to breast biopsy and rotary-cut probe cutter head, reduce the dependence to import,And cost can be reduced.
Brief description of the drawings
Fig. 1 is the axonometric drawing of the breast biopsy and the spiral cutter head in three concave surfaces of rotary-cut probe of the present invention.
Fig. 2 is another axonometric drawing of the breast biopsy and the spiral cutter head in three concave surfaces of rotary-cut probe of the present invention.
Fig. 3 is the top view of the breast biopsy and the spiral cutter head in three concave surfaces of rotary-cut probe of the present invention.
Fig. 4 is the side view of the breast biopsy and the spiral cutter head in three concave surfaces of rotary-cut probe of the present invention.
Embodiment
The present invention is further described with reference to the accompanying drawings and examples, and the content of embodiment is not as the guarantor to the present inventionProtect the limitation of scope.
As illustrated in fig. 1 and 2, the spiral cutter head in three concave surfaces of breast biopsy of the invention and rotary-cut probe includes bit body1 and connecting seat 2.Wherein, the bit body 1 is used to be pierced into breast to obtain lesion tissue.The connecting seat 2 be used forThe knife bar of probe is connected, in order to which doctor is operated.In the present invention, it is preferred to the bit body 1 and connecting seat 2 areOne.When in use, the spiral cutter head in three concave surfaces is connected on knife bar by the connecting seat 2, and doctor holds knife bar progressRotation, makes the bit body 1 be threadingly advanced in breast, realizes the acquisition of lesion tissue.
As Figure 1-4, in the present invention, formed with three structure identical concave surfaces 1.1 on the bit body 1.ItsIn, aid in sword 1.2 formed with parabolic on the rear portion of each concave surface 1.1.It is, the rear portion of the concave surface 1.1Defined by parabolic auxiliary sword 1.2 on border.Also, the parabolic auxiliary sword 1.2 of two adjacent concave surfaces 1.1 is each otherIt is intersecting, form interface point 1.5.
Meanwhile form two spiral main swords 1.3 on the front portion of each concave surface 1.1.It is, the concave surface 1.1Anterior border defined by two spiral main swords 1.3.
It is also, described spiral formed with three parabolic auxiliary swords 1.2 and three altogether on the bit body 1Main sword 1.1.Meanwhile three spiral main swords 1.3 are assembled on the top of the bit body 1 and form tip 1.4.AlsoIt is that at described sophisticated 1.4, the other end is located at the interface point 1.5 for one end of each spiral main sword 1.3.
Also, in the present invention, as shown in figure 3, the torsion angle of each spiral main sword 1.3 is 75 degree.
In the present invention, because the breast biopsy and the main sword of the front end of the spiral cutter head in three concave surfaces of rotary-cut probe areSpiral main sword, therefore, advanced when being inserted using spiral, with existing cutter head it is pusher advance compared with, it can be withThe advance resistance of insertion property apparatus is reduced, lifts the smoothness of insertion.Meanwhile unique torsion angle of spiral main sword causes itResistance is minimum, insertion is most smooth.
As shown in figure 4, in the present invention, the length of the spiral main sword 1.3, it is, from described sophisticated 1.4 to instituteThe air line distance for stating interface point 1.5 is l=4mm.Also, the length of the parabolic auxiliary sword 1.2, it is, whole throwThe length of thing line is 12mm.
In addition, in the present invention, the diameter D=5.2mm of the bit body 1.The diameter d=of the connecting seat 24.6mm.Also, the length L=8.56mm of the bit body 1.
So, this design of cutter head overall dimensions is passed through so that its advance resistance is minimum, insertion is most smooth, and reducesExtruding of the health tissues to lesion tissue so that biopsy is easily and accurate.
Finally, in the present invention, it is preferred to, the concave surface 1.1 from the bit body 1 by the way of material is removedObtain and its surface roughness is 1.6.So so that it inserts more convenient.
The breast biopsy of the present invention can not only reduce insertion property apparatus with the spiral cutter head in three concave surfaces of rotary-cut probeAdvance resistance, lift the smoothness of insertion.Most importantly, it has broken foreign vendor to breast biopsy and rotary-cut probe cutter headMonopolization, reduce the dependence to import, cost can be reduced, benefit hospital and patient.
The above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not to the present inventionEmbodiment restriction.For those of ordinary skill in the field, can also make on the basis of the above descriptionOther various forms of changes or variation.Here all embodiments can not be exhaustive.Every skill for belonging to the present inventionRow of the obvious changes or variations that art scheme is extended out still in protection scope of the present invention.