A kind of spiral cutter head in three concave surfaces of breast biopsy and rotary-cut probeTechnical field
The utility model belongs to medical instruments field.It is related to a kind of medical puncture syringe needle or cutter head, and in particular to oneThe spiral cutter head in three concave surfaces of kind breast biopsy and rotary-cut probe.
Background technique
Breast biopsy, that is, breast biopsy pathologic finding, refer to local excision, pincers take, puncture needle inhale and scratchIt the operation methods such as scrapes, extract, taking pathological tissues to carry out pathologic finding by patient's living body, the method to determine diagnosis.Carry outBreast biopsy, it is necessary to use breast biopsy and rotary-cut probe.
Currently, general breast biopsy and rotary-cut probe are usually all that the silent logical breast biopsy of american wheat and rotary-cut are visited in the marketNeedle 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, their insertion principle is all pushed ahead.ThisSample, the health tissues that can be passed through before being inserted into lesion push lesion to, and not only resistance is big, but also can squeeze lesion, therefore,The disadvantages of big in the presence of insertion advance resistance, insertion smoothness is low, influences lesion.Moreover, these breast biopsies and rotary-cut probe are allFor external product, monopolized for a long time by external import producer, it is at high price, increase medical treatment cost.
In view of the above-mentioned technological deficiency of the prior art, there is an urgent need to develop a kind of novel breast biopsy and rotary-cut probe.
Utility model content
The purpose of the utility model is to overcome disadvantage existing in the prior art, a kind of breast biopsy is provided and rotary-cut is visitedThe spiral cutter head in three concave surfaces of needle can reduce the advance resistance of insertion property instrument, promote the smoothness of insertion；And it can breakThe monopolization of foreign vendor, reduces cost.
To achieve the goals above, the utility model provides the following technical solutions:
A kind of spiral cutter head in three concave surfaces of breast biopsy and rotary-cut probe comprising bit body and attachment base, it is specialSign is, is formed on the bit body there are three the identical concave surface of structure, is formed with parabolic on the rear portion of each concave surfaceWire type assists sword, also, spiral main sword is formed on the front of each concave surface, formed altogether on the bit body there are threeThe 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 4mm.
Further, wherein the length of the side of the parabolic auxiliary sword is 12mm.
Still further, wherein, the diameter D=5.2mm of the bit body.
Furthermore, wherein the diameter d=4.6mm of the attachment base.
Further, wherein the length L=8.56mm of the bit body.
Further, wherein the concave surface is obtained by the way of removing material 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 breast biopsy and rotary-cut probe of the utility modelThe spiral cutter head in three concave surfaces has following advantageous effects:
1, the main sword of its front end is spiral main sword, is advanced when being inserted into using rotary, with pushing away for existing cutter headIt is compared into formula advance, the advance resistance of insertion property instrument can be reduced, promote the smoothness of insertion.
2, by the design of the torsion angle and cutter head overall dimensions of spiral main sword, so that its advance resistance is minimum, insertionIt is most smooth, and extruding of the health tissues to lesion is reduced, so that biopsy is more easily and accurate.
3, 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.
Detailed description of the invention
Fig. 1 is the axonometric drawing of the breast biopsy of the utility model Yu the spiral cutter head in three concave surfaces of rotary-cut probe.
Fig. 2 is another axonometric drawing of the breast biopsy of the utility model Yu the spiral cutter head in three concave surfaces of rotary-cut probe.
Fig. 3 is the top view of the breast biopsy of the utility model Yu the spiral cutter head in three concave surfaces of rotary-cut probe.
Fig. 4 is the side view of the breast biopsy of the utility model Yu the spiral cutter head in three concave surfaces of rotary-cut probe.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples, and the content of embodiment is not as practical to thisThe limitation of novel protection scope.
As illustrated in fig. 1 and 2, the spiral cutter head in three concave surfaces of the breast biopsy of the utility model and rotary-cut probe includes cutter headOntology 1 and attachment base 2.Wherein, the bit body 1 is for being pierced into breast to obtain lesion tissue.The attachment base 2 is usedIt is connected in the knife bar with probe, in order to which doctor operates.In the present invention, it is preferable that the bit body 1 and companyJoint chair 2 is integrated.When in use, which is connected on knife bar by the attachment base 2, and doctor holds knifeBar is rotated, and is threadingly advanced the bit body 1 in breast, is realized the acquisition of lesion tissue.
As shown in Figs 1-4, in the present invention, the identical concave surface of structure there are three being formed on the bit body 11.1.Wherein, parabolic auxiliary sword 1.2 is formed on the rear portion of each concave surface 1.1.It is, the concave surface 1.1It is defined by parabolic auxiliary sword 1.2 on the boundary at rear portion.Also, the parabolic of two adjacent concave surfaces 1.1 assists sword1.2 intersect with each other, and form interface point 1.5.
Meanwhile two spiral main swords 1.3 are formed on the front of each concave surface 1.1.It is, the concave surface 1.1The boundary of front defined by two spiral main swords 1.3.
Also, form that there are three parabolic auxiliary sword 1.2 and three are described spiral on the bit body 1 altogetherMain 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 one end of each spiral main sword 1.3 is located at the tip 1.4, and the other end is located at the interface point 1.5.
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, due to the master of the breast biopsy and the front end of the spiral cutter head in three concave surfaces of rotary-cut probeSword is that spirally therefore main sword is advanced when being inserted into using spiral, compared with the pusher advance of existing cutter head,The advance resistance that insertion property instrument can be reduced, promotes the smoothness of insertion.Meanwhile the unique torsion angle of spiral main sword makesIts resistance 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 the tip 1.4Linear distance to the interface point 1.5 is 4mm.Also, the length of the parabolic auxiliary sword 1.2, it is, entire throwThe length of object line is 12mm.
In addition, in the present invention, the diameter D=5.2mm of the bit body 1.The diameter d=of the attachment base 24.6mm.Also, the length L=8.56mm of the bit body 1.
In this way, passing through this design of cutter head overall dimensions, so that its advance resistance is minimum, insertion is most smooth, and reduceExtruding of the health tissues to lesion tissue, so that biopsy is more easily and accurate.
Finally, in the present invention, it is preferable that the concave surface 1.1 is using the removal material from the bit body 1Mode obtains and its surface roughness is 1.6.In this way, making its insertion more convenient.
The breast biopsy of the utility model and the spiral cutter head in three concave surfaces of rotary-cut probe can not only reduce insertion property deviceThe advance resistance of tool promotes the smoothness of insertion.Most importantly, foreign vendor has been broken to breast biopsy and rotary-cut probeThe monopolization of cutter head reduces the dependence to import, can reduce cost, benefit hospital and patient.
The above embodiments of the present invention is merely examples for clearly illustrating the present invention, and is notLimitations of the embodiments of the present invention.For those of ordinary skill in the art, on above explained basisOn can also make other variations or changes in different ways.Here all embodiments can not be exhaustive.All categoriesIn the obvious changes or variations that the technical solution of the utility model is extended out still in the protection model of the utility modelThe column enclosed.