Invention content
Technical problem to be solved by the utility model is to provide one kind can adapt to curved space use demand, punchingDepth is easily controllable, accurate positioning, and orthopaedics quick for installation uses band to limit soft brill.
The orthopaedics of the utility model uses band to limit soft brill, includes the cutting portion with cutting edge, and connection bone surgery is setStandby link block, cutting portion are fixedly connected by being flexible coupling with link block, it is characterised in that：The cutting portion is flexible coupling, connectsThere is central through hole inside block；Cutting portion includes rigid section, and rigid section leading portion has limited step, has counterbore inside back segment,The front end that is flexible coupling is stretched into counterbore and is fixedly connected with cutting portion rigid section；There is counterbore, front end counterbore to be sleeved on for link block front endOn being flexible coupling, there is link block back segment positioning milling plane to constitute triangular prism shaped section, link block back segment and bone surgery equipmentCorresponding fixed structure cooperation is fixedly connected in fixed seat；It is provided with guide sleeve on the cutting portion limited step；
The cutting portion, link block are fixedly connected by laser welding with being flexible coupling；
The cutting portion, connection block of material are 3Cr13Mo stainless steels.
The orthopaedics of the utility model uses band to limit soft brill, and cutting portion is connected by being flexible coupling to fix with link block laser weldingIt connects, can adapt to curved space use demand, connection is reliable, highly polished；It is sleeved on guide pin and is positioned by inside center through-hole,Accurate positioning；Link block is connect by the triangular prism shaped confined planes of shank with bone surgery equipment, quick for installation, while providing radial directionRotary stopper prevents drill bit from skidding in the course of surgery, and axially position effect is good；Punching depth, punching are controlled by guide sleevePrecision is high, simple in structure, easy to operate.
Specific implementation mode
As shown, a kind of orthopaedics uses band to limit soft brill, include the cutting portion 1 with cutting edge, and connection bone surgeryThe link block 4 of equipment, cutting portion 13 are fixedly connected by being flexible coupling with link block 4, can adapt to curved space use demand；It cutsPortion 1,3, link block, 4 inside that is flexible coupling are cut with central through hole, is sleeved on guide pin and is positioned by inside center through-hole, positioning is accurateReally；Cutting portion 1 includes rigid section 2, and 2 leading portion of rigid section has limited step, has counterbore inside back segment, 3 front ends that are flexible coupling are stretchedEnter and be fixedly connected with 1 rigid section 2 of cutting portion in counterbore, connection is reliable；There is 4 front end of link block counterbore, front end counterbore to be sleeved onIt is flexible coupling on 3, there is 4 back segment of link block positioning milling plane 5 to constitute triangular prism shaped section, on bone surgery equipment fixed chuckIt is also equipped with the planform adaptable with bit sub positioning milling plane 5,4 back segment of link block and bone surgery equipment fixed seatUpper corresponding fixed structure cooperation is fixedly connected；Positioning milling plane 5 can be with respective shapes on osseous surgery equipment fixed chuckPositioning shoulder respective outer side edges are fixed, and capable limit is rotated into radial, prevent drill bit rotational slippage in the course of surgery, radial positioning effectFruit is good, and prevents axial-rotation from swinging, and drilling precision is high, simple in structure, easy to operate.
It is provided with guide sleeve on cutting portion limited step, limit is provided with drill bit is combined by guide sleeve and limited step,Drilling depth can accurately control, and be capable of providing axially position, prevent bit from skidding, and punching dimensional accuracy is high, chip removalSmooth, axially position effect is good, simple in structure, easy to operate.
Cutting portion 1, link block 43 are fixedly connected by laser welding with being flexible coupling, and connection reliability is further increased, andWeld highly polished, corrosion resistance is strong；Cutting portion 1,4 material of link block are 3Cr13Mo stainless steels, 3Cr13Mo stainless steel materialsIt is medical instrument common used material with higher hardness and high-wearing feature.
The orthopaedics hollow soft drill of the utility model, overall length 200mm, cutting portion length be 58mm, cutting edge length 24mm,Counter bore hole diameters Φ 7mm, length 7.5mm, inside center through-hole diameter can go 1.0~1.3mm of selection, and the present embodiment is chosen1.2mm can easily pass through so as to the guide pin of a diameter of 1.1mm, will not bite；Connection block length be 32mm, triangular prism shaped sectionFace length is 16mm, and be flexible coupling a diameter of Φ 7mm, is manufactured in process by drawing, bright and clean, the nothing in addition to blade is answered on surfaceCutting edge of a knife or a sword rib impulse- free robustness, material heat treatment process are HRC48 °~52 °, and weld should be securely without crator, uniform color, no rust staining,And by surface treatment；Dimensional tolerance is according to GB/T1804-m standard productions.
The orthopaedics hollow soft drill of the utility model, guide sleeve length can be used for orthopaedics hand according to that need to punch depth selectionIt is set with guide sleeve in cutting portion when art, guiding can be provided by guide sleeve for drill bit, and depth limit is provided for drilling, drilling is deepDegree can accurately control, easy to operate.