Medical micro-mill handle
Technical field
This utility model relates to a kind of medical apparatus and instruments, is used for the medical micro-mill handle of osseous tissue finishing and excision in particularly a kind of otorhinolaryngology head and neck surgical operation.
Background technology
In the operation of carrying out cutting tissues such as ear, nose, larynx and neck, need grind the osseous tissue of pathological changes etc. by high-revolving mill butt formula and cut operation and open internal channel, generally adopt micro-bistrique to carry out grinding, bistrique drives use by being installed on the micro-mill handle; Because operating process relates to personal safety, therefore, require the volume of abrasive drilling handle little, in light weight, hold good hand touch, reliable operation, noise is little, vibration is little, heating is little and easy to operate.
Medical micro-mill handle comprises power input module and power output precision, and by motor-driven, in the prior art, the power output precision is provided with micro-bistrique clamping assembly, in the use, the bistrique tail end is inserted carry out grinding after micro-bistrique clamping assembly clamps; Because grinding process is related to patient's the physical and mental health and the work efficiency and the operating accuracy of medical worker, thereby, the clamping situation of grinding handle, the unloading process of bistrique are particularly important, the phenomenon of skidding, get loose can not appear after the bistrique clamping, and clamping and unloading process should be simple and convenient, increases work efficiency.
Therefore, need improve existing medical micro-mill handle, have that volume is little, in light weight, compact conformation and the good advantage of clamping stability, in use the clamping dynamics of bistrique is moderate, can not occur skidding and getting loose phenomenon, clamping and disassembling section are convenient, guarantee the quality of carrying out and guarantee operation smoothly of operation process, increase work efficiency.
The utility model content
In view of this, this utility model provides a kind of medical micro-mill handle, have that volume is little, in light weight, compact conformation and the good advantage of clamping stability, in use the clamping dynamics of bistrique is moderate, can not occur skidding and getting loose phenomenon, clamping and disassembling section are convenient, guarantee the quality of carrying out and guarantee operation smoothly of operation process, increase work efficiency.
Medical micro-mill handle of the present utility model, comprise power input module and power output precision, described power input module comprises input beam barrel and power input shaft, being placed in the input beam barrel in the described power input shaft is rotatably assorted with it, the power output precision comprises output beam barrel and power output shaft, being placed in the output beam barrel in the described power output shaft is rotatably assorted with it, described power input shaft cooperates with the power output shaft transmission, input beam barrel front end is fixedlyed connected with output beam barrel tail end, and described power output shaft is provided with micro-bistrique clamping assembly; Described micro-bistrique clamping assembly comprises collet, and described power output shaft is provided with central shaft hole along axis, and the mounting rod of collet inserts central shaft hole, the tapered opening of central shaft hole front end for matching with the taper surface of collet; Described power output shaft cylindrical is with sliding sleeve in the mode that can slide vertically, and a pin radially passes the mounting rod and the power output shaft of sliding sleeve, collet, and the pin-and-hole that is passed by pin on the described power output shaft is a mounting hole vertically;
Comprise that also being enclosed within the power output shaft cylindrical drives the passing assembly that sliding sleeve moves vertically, the output beam barrel is provided with the radially groove of axial strip structure, the setting of described passing assembly is extended the output beam barrel and externally threaded end face is set by groove radially, the output beam barrel is with the driving rotation set outside the circumferencial direction single-degree-of-freedom is rotatably assorted, described driving rotation set is provided with and passes the female thread that the assembly external screw thread cooperates;
Further, also comprise latch assembly, described latch assembly comprises locking sleeve and stay pipe, described locking sleeve tail end is near output beam barrel front end, stay pipe is coated at locking sleeve and is threaded with the output beam barrel and with the output beam barrel, and described locking sleeve and stay pipe cooperate by pre-small post-large taper surface;
Further, described output beam barrel is dwindled gradually by tail end forward end external diameter;
Further, described output beam barrel dwindles gradually by tail end forward end external diameter is stepped;
Further, described passing assembly comprises passes cover, door shape card and be enclosed within the power output shaft cylindrical and press closer the locking spring of sliding sleeve front end face, described passing cover is enclosed within the power output shaft cylindrical and leans against the sliding sleeve tail end, pass the cover outer circle diameter to being symmetrical arranged two horizontal draw-in grooves, described door shape card is stuck in to pass and puts and two horizontal draw-in grooves of the corresponding one by one embedding of bipod, door shape card bipod end face and blind end end face are in the same face of cylinder and also extend the output beam barrel by the radially groove of correspondence respectively, and the external screw thread of passing assembly is arranged on a shape card bipod end face and a blind end end face;
Further, described driving rotation set also comprises and its interior cover in the circumferencial direction secure fit, circle in the cover in the female thread that cooperates with the external screw thread of passing assembly is arranged on;
Further, described power output shaft cylindrical is with and presses closer the return spring of passing the cover tail end;
Further, described input beam barrel front end bending forms bending part, and described bending part is fixedlyed connected with the output beam barrel; The bending angle of described bending part is more than or equal to 90 °; Described power input shaft cooperates by contrate gear pair or bevel gear pair transmission with power output shaft;
Further, described driving rotation set is coated at the bending part of input beam barrel and the cylindrical of output beam barrel simultaneously;
Further, described power input shaft is rotatably assorted with the input beam barrel by rolling bearing I and rolling bearing II, and power output shaft is rotatably assorted with the output beam barrel by rolling bearing IV and rolling bearing III.
The beneficial effects of the utility model: medical micro-mill handle of the present utility model, adopt the structure that is coated at collet with power output shaft, have that volume is little, in light weight, compact conformation and the good advantage of clamping stability, in use the clamping dynamics of bistrique is moderate, can not occur skidding and getting loose phenomenon; Drive clamping and dismounting collet by helicitic texture in conjunction with spring structure, clamping and disassembling section are convenient, guarantee the quality of carrying out and guarantee operation smoothly of operation process, increase work efficiency.
Description of drawings
Below in conjunction with drawings and Examples this utility model is further described.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is that door shape card cooperates transverse sectional view with the passing cover;
Fig. 3 is for passing the nested structure sketch map;
Fig. 4 is that power output shaft, collet and sliding sleeve cooperate transverse sectional view;
Fig. 5 is the power output shaft structural representation;
Fig. 6 is an output shaft barrel structure sketch map.
The specific embodiment
Fig. 1 is a structural representation of the present utility model, Fig. 2 is that door shape card cooperates transverse sectional view with the passing cover, Fig. 3 is for passing the nested structure sketch map, Fig. 4 is a power output shaft, collet and sliding sleeve cooperate transverse sectional view, Fig. 5 is the power output shaft structural representation, Fig. 6 is an output shaft barrel structure sketch map, as shown in the figure: the medical micro-mill handle of present embodiment, comprise power input module and power output precision, described power input module comprises input beam barrel 1 and power input shaft 3, being placed in input beam barrel 1 in the described power input shaft 3 is rotatably assorted with it, the power output precision comprises output beam barrel 2 and power output shaft 6, being placed in output beam barrel 2 in the described power output shaft 6 is rotatably assorted with it, described power input shaft 3 cooperates with power output shaft 6 transmissions, input beam barrel 1 front end is fixedlyed connected with output beam barrel 2 tail ends, and described power output shaft 6 is provided with micro-bistrique clamping assembly; In the present embodiment, described micro-bistrique clamping assembly comprises collet 8, described power output shaft 6 is provided with central shaft hole 6a along axis, and the mounting rod 8a of collet 8 inserts central shaft hole, the tapered opening of central shaft hole 6a front end for matching with the taper surface of collet 8; Described power output shaft 6 cylindricals are with sliding sleeve 19 in the mode that can slide vertically, one pin 12 radially passes the mounting rod 8a and the power output shaft 6 of sliding sleeve 19, collet 8, and the pin-and-hole 6b that is passed by pin 12 on the described power output shaft 6 is a mounting hole vertically; Comprise that also being enclosed within power output shaft 6 cylindricals drives the passing assembly that sliding sleeve 19 moves vertically, type of drive has multiple, can directly drive by screw thread, also can assist with spring; Output beam barrel 2 is provided with radially groove 2a, and the setting of described passing assembly is extended output beam barrel 2 and externally threaded end face is set by groove 2a radially, and radially groove 2a be the strip structure vertically, moves axially the formation space for what pass assembly; Output beam barrel 2 is with outside the circumferencial direction single-degree-of-freedom is rotatably assorted and drives rotation set 15, as shown in the figure, employing is driving the structure realization above-mentioned purpose that rotation set 15 two ends are provided with heavy stand and are fixedly installed on the stops on the output beam barrel, be easy for installation and removal, other location structure can certainly be adopted, the purpose of this utility model can both be realized; Described driving rotation set 15 is provided with and passes the female thread that the assembly external screw thread cooperates; Drives structure is simply laborsaving, utilizes the collet of prior art, obtains conveniently; Adopt the screw drive collet lax to bistrique, operating process is simple gently.
In the present embodiment, also comprise latch assembly, described latch assembly comprises locking sleeve 21 and stay pipe 9, described locking sleeve 21 tail ends are near output beam barrel 2 front ends, stay pipe 9 is coated at locking sleeve 21 and is threaded with output beam barrel 2 and with output beam barrel 2, and described locking sleeve 21 and stay pipe 9 cooperate by pre-small post-large taper surface; After bistrique 20 is installed, make the bistrique straight bar part form simple beam structure, be applicable to that the mandrel structure bistrique that has overcoat uses, and is beneficial to the clamping stability that guarantees bistrique, thereby further guarantees carrying out smoothly of operation.
In the present embodiment, described output beam barrel 2 is dwindled gradually by tail end forward end external diameter; Adopt the output beam barrel by the diminishing structure of tail end forward end external diameter, adapt to operator's sight line trend, avoid blocking and disturbing to surgical field of view, thereby can guarantee operation process carry out smoothly and guarantee the operation quality, can be applicable in operations such as internal ear, middle ear and tympanum shaping to have stronger versatility; Simultaneously, this kind structure can reduce the lateral dimension of handle, make it to have volume little, in light weight, hold good hand touch and the good advantage of operational stability.
In the present embodiment, described power input shaft 3 is rotatably assorted with the input beam barrel by rolling bearing I 23 and rolling bearing II 24, power output shaft 6 is rotatably assorted with the output beam barrel by rolling bearing IV 14 and rolling bearing III10, make system's running steadily, reduce vibration and heating, prolong its service life.
In the present embodiment, described output beam barrel 2 dwindles gradually by tail end forward end external diameter is stepped; Adopt step structure to make things convenient for the installation of other parts, and process simple and convenient.
In the present embodiment, described passing assembly comprises to be passed cover 13, door shape card 17 and is enclosed within power output shaft 6 cylindricals and presses closer the locking spring 11 of sliding sleeve 19 front end faces, and as shown in the figure, locking spring 11 front ends withstand rolling bearing III10 inner ring by thrust block 5; Described passing cover 13 is enclosed within power output shaft 6 cylindricals and leans against sliding sleeve 19 tail ends, pass cover 13 outer circle diameters to being symmetrical arranged two horizontal draw-in groove 13a, described door shape card 17 is stuck in to be passed on the cover 13 and corresponding one by one two the horizontal draw-in groove 13a of embedding of bipod, and door shape card 17 bipod end faces and blind end end face are in the same face of cylinder and extend output beam barrel 2 by corresponding radially groove 2a (output beam barrel 2 both lateral sides are provided with radially groove 2a respectively) respectively; The external screw thread of passing assembly is arranged on a shape card 17 bipod end faces and blind end end face; , simple and convenient during use by locking spring 11 auto locks.
In the present embodiment, described driving rotation set 15 also comprises and its interior cover 16 in the circumferencial direction secure fit, circle in the cover 16 in the female thread that cooperates with the external screw thread of passing assembly is arranged on, and fit system can adopt modes such as key cooperation; Convenient processing and dismounting.
In the present embodiment, described power output shaft 6 cylindricals are with and press closer the return spring 22 of passing the cover tail end, and return spring 22 tail ends withstand on rolling bearing IV14 outer ring by thrust block 25.
In the present embodiment, described input beam barrel 1 front end bending forms bending part 1a, and described bending part 1a is fixedlyed connected with output beam barrel 2; The bending angle of described bending part 1a is more than or equal to 90 °, and present embodiment adopts 160 °; Described power input shaft 3 cooperates by contrate gear pair or bevel gear pair 4 transmissions with power output shaft 6, and present embodiment adopts contrate gear pair; This structure can guarantee to import the connective stability between beam barrel 1 and the output beam barrel 2, thereby guarantees that structural entity is stable, further guarantees carrying out smoothly of operation.
In the present embodiment, described driving rotation set 15 is coated at the bending part 1a of input beam barrel 1 and the cylindrical of output beam barrel 2 simultaneously; Further increase the stability in the large of structure, further guarantee processing safety.
When this utility model uses, rotating drive rotation set 15, cover 16 rotations in driving, door shape card 17 moves forward, and promotes passing cover 13 and sliding sleeve 19 and oppresses locking spring 11 forward, and pin 12 moves forward in mounting hole 6b, driving spring chuck 8 also moves forward, the bullet of collet leading section separates with the tapered opening of power output shaft central shaft hole, and collet 8 is released, bistrique 20 can be connected from the front end insertion retaining ring 21 of stay pipe 9 and with collet; Then, backward rotation drives rotation set 15 again, same principle, door shape card 17 moves and compressing return spring 21 backward, sliding sleeve 19 moves under the effect of locking spring 11 backward, collet 8 also moves backward, the tapered opening tight fit of the bullet of collet leading section and power output shaft central shaft hole, bistrique 20 is clamped by collet, rotational support pipe 9, thereby after moving backward retaining ring 21 is shunk under stay pipe conical surface radial compression applied and hold bistrique 20 overcoats tightly, can lock, can carry out grinding or creep into by structures such as six sides.
Explanation is at last, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although this utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.