A kind of manual drill for craniotomy external member
Technical field
This utility model belongs to medical instruments field, particularly relates to a kind of manual drill for craniotomy external member.
Background technology
The Chinese utility model patent of Patent No. 201520672450.5 discloses a kind of manual drill for craniotomy external member external member,
Above-mentioned manual drill for craniotomy external member, due to the existence of positioning needle, makes when opening cranium, and manual drill for craniotomy external member will not be beaten by skull relatively
Slide and energy one man operation, but when just drilling skull, positioning needle may be pierced intracranial, destroy internal brain tissue.
Summary of the invention
Technical problem to be solved in the utility model is: the deficiency existed for prior art, it is provided that a kind of structure letter
Single, it is possible to punch on skull easily, and bored skull block is taken out, it is to avoid cross deep drilling and enter inside skull.
For realizing the purpose of this utility model, it is achieved by the following technical solutions: a kind of manual drill for craniotomy external member, bag
Include positioning seat, be plugged on the drilling pipe in described positioning seat, be threaded in the adjusting nut part of described drilling pipe outer wall, the company of slip
The fixing pin that is connected in described drilling pipe and tighten handle.
Circular first through hole is offered on described positioning seat;Described positioning seat lower end forms along described through hole circumference all
Four positioning needles of even distribution;Described drilling pipe includes the drilling pipe portion of cylinder, and be molded over upper end, described drilling pipe portion pierces distance
Regulation portion and be molded over the knob of upper end, described drilling pipe portion;Described drilling pipe subordinate's end forms brill tooth;Described pierces
Distance adjustment side wall upper part forms the first external screw thread;Described adjusting nut part includes threadeds with described external screw thread
Nut;Described nut inner wall forms the first female thread;Described fixing pin includes taper bit;On described taper bit
End forms shank;Described shank upper side offers bar shaped sliding tray along its length;Described sliding tray is slidably connected
Tighten handle;In the middle of described knob, upper end offers the first perforation coordinated with described shank;Described tightens handle
Centre offers the second perforation coordinated with described shank;Described handle inwall of tightening forms and coordinates with bar shaped sliding tray
Slider bar;Described shank upper outside is socketed with spring;Described spring tightens handle lower end described in being connected to.
The upper position of described shank outer wall correspondence bar shaped sliding tray is threaded connection assembly with handles;Described handle
Assembly includes connector and two a pair handles being symmetrically distributed in connector both sides;Offer in the middle of described connector
Second perforation;The second described perforation inwall forms the second female thread;The top of described shank outer wall correspondence bar shaped sliding tray
Position forms and the second external screw thread of described second screw-internal thread fit;Described handle and connector opposing end surface form card
Head;Described handle is rotationally connected by bolt with described connector near handle one end described in connecting rod;Described handle is away from twisting
Tight handle one end end face forms Magnet;Described handle upper end of tightening offers the dop with described handle and coordinates two symmetries
Bar-shaped trough;Described positioning seat, drilling pipe, adjusting nut part, fixing pin, tighten handle and handle assembly is respectively adopted stainless
Steel is one-body molded.
Preferably: described positioning seat outer wall forms two symmetrical handle portions 11.
Preferably: the described distance adjustment lower sidewall that pierces offers multiple draw-in groove 221;Described draw-in groove
Along piercing the circumferentially equidistant from distribution of distance adjustment;Described nut lower end forms the clamping in the through hole being plugged on positioning seat
Circle 31, connects inside described clamp ring and has and the elastic chuck 311 of described card slot fit;Described draw-in groove is solid with elastic chuck
Determine the adjusting nut part position relative to drilling pipe.
Preferably: in the middle of described knob, upper end offers the recess 231 coordinated with described handle;Avoid
Drilling pipe is driven to rotate together during swing handle.
Compared with prior art, the beneficial effects of the utility model are: during use, first according to practical situation, and will regulation
Nut piece is threaded in the correct position piercing distance adjustment outer wall, and then positioning seat is fixed on skull position to be punctured
Put, the drilling pipe after regulation is plugged in the through hole in hole, location, fixing pin is plugged in the perforation of drilling pipe, spring housing is connected on
Outside described fixing pin, handle sleeve will be tightened on shank, finally handle assembly will be screwed in shank upper end;Pinch hole, location on the other hand
Handle portion, be on the other hand rotated down handle, due to dop, bar-shaped trough, the second female thread and the second externally threaded existence, drive
Tighten handle with shank along with handle rotates downwardly together, make taper bit enter skull appropriate depth, glide tightening handle
Time, spring contraction;This is middle close to adapter sleeve to handle, owing to now handle opposite face is provided with attracting Magnet, make
Handle can be always maintained at the state that contacts with each other, and is rotated down this pair handle, makes the suitable distance of spring-compressed, due to the cunning of shank
Move the existence of groove and the slider bar tightening handle so that when being rotated down handle, tighten handle and do not produce vertically with shank
The movement in direction;Now pinch the handle portion in hole, location, rotary knob portion on the other hand on the other hand, due to spring contraction, brill tooth is against
On skull, rotary knob portion when, bore tooth and move down along with drilling pipe rotates, when adjusting nut part outer wall
When projection and positioning seat offset, it is meant that skull is the most drilled to be opened, owing to taper bit is fixed on the skull block after being drilled, institute
Only this manual drill for craniotomy external member need to be taken off, now extend due to spring, by the skull block on taper bit, be positioned at drilling pipe
Internal thus be removed.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is decomposition sectional structure schematic diagram of the present utility model.
Fig. 3 is sectional structure schematic diagram of the present utility model.
Fig. 4 is drilling pipe structural representation of the present utility model.
Fig. 5 is adjusting nut part structural representation of the present utility model.
Fig. 6 is handle assembly structural representation of the present utility model.
Fig. 7 is fixing needle construction schematic diagram of the present utility model.
Fig. 8 is handle and the handle assembly sectional structure schematic diagram tightened of the present utility model.
Fig. 9 is handle assembly structural representation of the present utility model.
1, positioning seat;11, handle portion;12, positioning needle;13, the first through hole;2, drilling pipe;20, tooth is bored;21, drilling pipe portion;22、
Pierce distance adjustment;221, draw-in groove;222, the first external screw thread;23, knob;231, recess;232, the first perforation;3, regulation
Nut piece;31, clamp ring;311, elastic chuck;32, nut;321, the first female thread;4, fixing pin;41, taper bit;42、
Shank;421, sliding tray;43, the second external screw thread;5, handle is tightened;51, bar-shaped trough;52, the second through hole;521, slider bar;6、
Handle assembly;61, connector;62, the second perforation;621, the second female thread;63, handle;631, Magnet;632, rotation hole;64、
Dop;7, spring.
Detailed description of the invention
Below according to accompanying drawing, detailed description of the invention of the present utility model is made a detailed explanation.
According to shown in Fig. 1 to Fig. 9, the one manual drill for craniotomy external member described in the present embodiment, include positioning seat 1, grafting
Drilling pipe 2 in described positioning seat, is threaded in the adjusting nut part 3 of described drilling pipe outer wall, is slidably connected at described drilling pipe
In fixing pin 4 and tighten handle 5;Circular first through hole 13 is offered on described positioning seat;Described positioning seat lower end becomes
Type has along described through hole equally distributed four positioning needles 12 of circumference;Described drilling pipe includes the drilling pipe portion 21 of cylinder, is molded over
The piercing distance adjustment 22 and be molded over the knob 23 of upper end, described drilling pipe portion of upper end, described drilling pipe portion;Described drilling pipe
Subordinate's end forms brill tooth 20;The described distance adjustment side wall upper part that pierces forms the first external screw thread 222;Described regulation
Nut piece includes the nut 32 threadeded with described first external screw thread;Described nut inner wall forms the first female thread
321。
Described fixing pin includes taper bit 41;Described taper bit upper end forms shank 42;On described shank
Side, portion offers bar shaped sliding tray 421 along its length;Described sliding tray slidably connects tightens handle 5;Described knob
In the middle of portion, upper end offers the first perforation 232 coordinated with described shank;Described tightening offers in the middle of handle and described pin
The second perforation 62 that bar coordinates;Described handle inwall of tightening forms the slider bar 521 coordinated with bar shaped sliding tray;Described
Shank upper socket has spring 7;Described spring tightens handle lower end described in being connected to;Described shank outer wall correspondence bar shaped is slided
The upper position of groove is threaded connection assembly with handles;Described handle assembly 6 includes connector 61 and two symmetries
It is distributed in a pair handle 63 of connector both sides;The second perforation 62 is offered in the middle of described connector;The second described perforation
Inwall forms the second female thread 621;The upper position of described shank outer wall correspondence bar shaped sliding tray forms and described second
Second external screw thread 43 of screw-internal thread fit;The end face that described handle is relative with tightening handle forms dop 64;Described handle one
End is rotationally connected by bolt with described connector;Described handle is provided with Magnet 631 away from the one end tightening handle;Described
Tighten handle upper end and offer the bar-shaped trough 51 that the dop with described handle coordinates;Described positioning seat, drilling pipe, adjusting nut
Part, fixing pin, tighten handle and handle assembly to be respectively adopted rustless steel one-body molded.
Described positioning seat outer wall forms two symmetrical handle portions 11.
The described distance adjustment lower sidewall that pierces offers multiple draw-in groove 221;Described draw-in groove is adjusted along piercing distance
Joint portion circumferentially equidistant from distribution;Described nut lower end forms the clamp ring 31 in the through hole being plugged on positioning seat, described card
Connect inside collar and have and the elastic chuck 311 of described card slot fit.Described clamp ring inwall relative resilient dop position
Form the cavity accommodating elastic chuck;It is foamed plastic that described elastic chuck is positioned at the part of cavity, elastic chuck outer end
For rigid plastics.
In the middle of described knob, upper end offers the recess 231 coordinated with described handle.
During use, first according to practical situation, adjusting nut part is threaded in and pierces the suitable of distance adjustment outer wall
Position, is then fixed on skull position to be punctured by positioning seat, the drilling pipe after regulation is plugged in the through hole in hole, location, will be solid
Determine pin to be plugged in the perforation of drilling pipe, spring housing is connected on outside described fixing pin, handle sleeve will be tightened on shank, finally will
Handle assembly screws in shank upper end;Doctor pinches the handle portion in hole, location on the other hand, is rotated down handle, due to dop, bar on the other hand
Shape groove, the second female thread and the second externally threaded existence, drive and tighten handle with shank along with handle rotates downwardly together, make
Taper bit enters skull appropriate depth, when tightening handle and gliding, and spring contraction;Handle is leaned in the middle of adapter sleeve by this
Closely, owing to now handle opposite face is provided with attracting Magnet, make handle can be always maintained at the state that contacts with each other, be rotated down this
A pair handle, makes the suitable distance of spring-compressed, due to the existence of sliding tray and the slider bar tightening handle of shank to
During lower rotating handles, tighten handle and do not produce the movement at vertical direction with shank;Now pinch the handle portion in hole, location on the other hand,
Rotary knob portion on the other hand, due to spring contraction, is against brill tooth on skull, rotary knob portion when, bores tooth along with drilling pipe
Rotate while moving down, when the projection of adjusting nut part outer wall offsets with positioning seat, it is meant that skull is the most drilled
Open, owing to taper bit is fixed on the skull block after being drilled, so only this manual drill for craniotomy external member need to be taken off, now due to
Spring extends, and by the skull block on taper bit, is positioned at drilling pipe inside thus is removed.