New! View global litigation for patent families

CN2469899Y - Dilator for drawing-out residual screw in bone - Google Patents

Dilator for drawing-out residual screw in bone Download PDF

Info

Publication number
CN2469899Y
CN2469899Y CN 01208245 CN01208245U CN2469899Y CN 2469899 Y CN2469899 Y CN 2469899Y CN 01208245 CN01208245 CN 01208245 CN 01208245 U CN01208245 U CN 01208245U CN 2469899 Y CN2469899 Y CN 2469899Y
Authority
CN
Grant status
Grant
Patent type
Prior art keywords
drill
thread
hollow
drillstock
external
Prior art date
Application number
CN 01208245
Other languages
Chinese (zh)
Inventor
邓国勋
冯庆义
王香
刘玲
Original Assignee
邓国勋
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Abstract

The utility model relates to a medical orthopaedics hole enlarger, which comprises a hollow drill and a drillstock with the front section having an external thread, the back section in the step of the hollow drill has an internal thread connected with the external thread of the drillstock, the back end of the hollow drill is provided with a plurality of inclined opening slots, a guide rod and a spiral spring are arranged in the inner hole of the step of the hollow drill, a casing pipe is also covered on the external thread of the drillstock, and the front section of the casing pipe is provided with a tapered jaw matching with the inclined opening of the drill. In addition, the external thread of the drillstock is also connected with a locknut. The drilling position is easy to aim, and the hollow drill and the drillstock can be dismantled and is connected firmly.

Description

取骨内残留螺钉扩孔器 Take the remaining bone screw reamer

本实用新型涉及一种医用骨科扩孔器,尤其指骨伤愈合后,在取出残留螺钉前,先对骨壁上的螺钉扩孔的扩孔器。 The present invention relates to a medical orthopedic reamer, especially after orthopedic healing means, before removing the remaining screws, the bone screws to the wall of the reamer of the reamer.

目前,一般采用普通实心钻头,夹持在骨科钻具上,对人体骨壁钻孔,很难对准骨壁内残留的螺钉所在骨壁的位置,容易出现残留螺钉相对实心钻头相碰撞,会使钻头与骨科钻具打滑而钻削无法继续进行,甚至钻头头部撞损或撞坏,而埋入骨内,造成医疗事故。 Currently, the general ordinary solid drill bit, the drill holder in orthopedics, for human bone wall of the borehole, the wall of the bone screw is difficult to align the bone wall where the remaining positions, the residual solid drill screw is relatively prone to collide, will the orthopedic drill bit and drill slipping can not continue, even damaged or crashed drill bump on the head, and buried in the bone, resulting in medical malpractice.

鉴此,本实用新型的目的是提供一种取骨内残留螺钉的扩孔器,以空心钻钻入骨壁内,且该空心钻内还具有伸出的活动导向杆,又空心钻与钻柄采用可拆卸的牢固连接。 In view of this, object of the present invention is to provide a bone screw residue taken reamer, core drill to drill into the bone wall and the inner hollow drill further has a movable guide bar projecting and hollow drill shank and removable secure connection.

本实用新型的目的是这样实现的:一种取骨体内残留螺钉的扩孔器,包括空心钻头及其前段具有外螺纹的钻柄,其特征是:空心钻头内为一阶梯内孔,该阶梯内孔的大孔后段具有内螺纹,而该空心钻头的后端开设数个斜开口槽,在该阶梯内孔的小孔内滑设一导向杆,在空心钻头的内螺纹与钻柄的外螺纹连接,且该外螺纹的前端面与导向杆的后端面之间设有一螺旋弹簧,又在该外螺纹上套设一套管,该套管前段具有数个斜爪,且与空心钻头的斜开口槽配合,又在该外螺纹上连接一锁紧螺母,且该锁紧螺母的前端面抵靠套管的后端面。 The object of the present invention is achieved: one bone screw residue taken reamer body, comprising a hollow drill shank having a front section and an external thread, characterized in that: the hollow drill bit is a stepped bore, the step macropores rear section of the bore with an internal thread, while the rear end of the hollow drill bit defines a plurality of openings inclined grooves, holes in the stepped bore slidably disposed within a guide rod, an internally threaded hollow shank drill bit an externally threaded connection, and the externally threaded distal end surface of the guide rod is provided between a rear end surface of the coil spring, and on which a sleeve provided externally threaded sleeve, the sleeve having a plurality of pre-stage helical claws, and with the hollow drill bit the mating inclined opening groove, and is connected to a lock nut on the external thread and the locking sleeve against the rear end of the front end surface of the nut.

所述导向杆的后端具有大端头,且处在所述阶梯内孔的大孔内;所述斜开口槽的两侧面皆为斜面,同样所述斜爪两侧面亦为斜面。 The rear end of the guide rod having a large end of the head, and a large hole in the inner hole of the ladder; the oblique opening of the groove side surfaces are all inclined surface, both side surfaces of the same pawl of the oblique ramp also.

由于采用上述方案,钻孔位置易对准,而且空心钻头与钻柄既能装卸,又连接牢固。 Due to the above embodiment, easily aligned drilling position, the drill and core drill shank both loading and unloading, and securely connected.

下面结合附图和实施例对本实用新型进一步说明。 DRAWINGS The present invention is further described and embodiments of the embodiment.

图1本实用新型典型实施例示意图。 Example 1 a schematic exemplary embodiment of the present invention.

图中:1、空心钻头,11、阶梯内孔,12、斜开口槽,13、内螺纹,14、螺旋槽,2、导向杆,3、螺旋弹簧,4、钻柄,41、外螺纹,5、套管,51、斜爪,6、锁紧螺母。 FIG: 1, the hollow drill bit 11, the stepped bore 12, the oblique opening groove 13, an internal thread 14, spiral grooves 2, guide bar 3, the coil spring 4, the shank 41, an external thread, 5, the sleeve 51, the swash pawl 6, the lock nut.

本实施例包括:空心钻头1、导向杆2、螺旋弹簧3、钻柄4、套管5、及锁紧螺母6(如图1所示)其中:空心钻头1其前段(左段)外表面具有两条对称的螺旋槽14(既二头螺旋槽),供钻削热量散出,提高钻骨壁的速度,减少手术时间;而该空心钻头1内为一阶梯内孔11(即具有一台肩面)又该阶梯内孔11的大孔后段(右段)具有内螺纹13,还在空心钻头1的后端(右端)等分地开设数个斜开口槽12(再侧面皆为斜面)。 This embodiment comprises: a hollow drill bit, the guide rod 2, the coil spring 3, the shank 4, the sleeve 5, 6 and locking nuts (Figure 1) wherein: a hollow drill bit which front section (left segment) outer surface with two symmetrical helical grooves 14 (only two helical grooves), for drilling heat flows, increase the speed of drilling of the bone wall, to reduce the operation time; and the hollow drill bit 1 is a stepped bore 11 (i.e., having a shoulder surface) should the latter stage macropores stepped bore 11 (right segment) having an internal thread 13, also the rear end of a hollow drill bit (the right end) and the like partially defines a plurality of openings inclined grooves 12 (again the side surface are both slope).

导向杆2是后端(右端)具有大端头的圆柱杆,该导向杆2与空心钻头1的阶梯内孔11的小孔段滑动配合,而其大端头台肩面依靠阶梯内孔11的台肩面。 2 is a rear end of the guide bar (right) cylindrical rod having a large end of the head, the guide bar section stepped bore hole 11 of the hollow drill bit 1 2 sliding fit, while its big end the first shoulder surface 11 depend on the stepped bore shoulder surface.

螺旋弹簧3安置在空心钻头1的阶梯内孔11的大孔内,且其前端抵靠导向杆2的大端头端面。 The coil spring 3 is disposed in the stepped bore of the hollow drill a larger hole 11, and its front end abuts against the big end of the first guide bar 2 the end face.

钻柄4是前段(左段)具有外螺纹41的圆柱轴,以其钉螺纹丝41前端(左段)与空心钻头1的内螺纹13连接,且钻柄4的前端头抵靠螺旋弹簧3的后端,以钻柄4的前端头向前或向后,调节螺旋弹簧3的压力大小。 4 is a preceding shank (left segment) having an outer threaded cylindrical shaft 41, the front end of the staple 41 with its silk thread (left segment) is connected with the internal thread 13 of the hollow drill bit, the shank and the head 4 abuts against the front end of the coil spring 3 the rear end, the front end of the shank to the drill head 4 forward or backward to adjust the size of the pressure of the coil spring 3.

套管5是其前段具有等分的数个斜爪51(两侧面皆为斜面),该套管5与滑套在钻柄4的外螺纹41上,而且其斜爪51与空心钻头1的斜开口槽12相配合。 5 is a front section having a sleeve which several aliquots claw 51 obliquely (both side surfaces are all inclined surface), and the sleeve 5 slipped over the shank 4 on an external thread 41, and the claw 51 obliquely hollow drill 1 cooperating helical groove 12 opening.

锁紧螺母6连接在钻柄4的外螺纹41上,且其前端(左端面)抵靠套管5的后端面,使套管5的斜爪51与空心钻头1的斜开口槽12楔紧,以防钻柄4的外螺纹41与空心钻头1的内螺纹13间的松动(螺纹间间隙),造成空心钻头1钻骨壁的打滑或间歇转动。 6 is connected to the locking nut onto the external thread 41 of the shank 4, and the front end (the left end surface) abuts against the rear end surface of the sleeve 5, the pawl 51 and the swash hollow drill sleeve 5 of the oblique opening 12 of the slot wedge 1 , to prevent the drill shank with an external thread 41 of the hollow drill the internal thread loosening 1 (the gap between the thread) 13, resulting in a hollow drill bit or drill bone wall slip intermittent rotation. 尤其有时空心钻头1前端接触到骨壁内的螺钉时,钻削力加大而产生打滑。 In particular, the hollow drill tip 1 may come into contact with the wall of the bone screw, a slip is generated to increase the drilling force.

本实施例的操作及其原理如下:首先,把钻柄4的后段(圆柱杆)夹持在骨科钻具内,将导向杆2对准欲取残留螺钉的骨壁孔的中心,启动骨科钻具,经钻柄4、锁紧螺母6、套管5而驱动空心钻头1旋转,而导向杆2并不转动,仅起导向作用;该空心钻头1钻入骨壁内,导向杆2逐渐回缩至空心钻头1内,直至空心钻头1前端穿透骨壁。 Its principle of operation of the present embodiment is as follows: First, the rear section of the shank (cylinder rod) 4 orthopedic drill is clamped in the center of the guide walls of the holes 2 aligned with the intention of seizing residual bone screw rod, start Orthopedics drill, the shank 4, locking nut 6, the sleeve 5 is driven hollow drill 1 is rotated, the guide rod 2 and does not rotate, only serves as a guide; bit 1 of the hollow drill into the bone wall, the guide rod 2 back gradually reduced to the hollow drill bit 1, until the front end of a hollow drill bit penetrates the bone wall.

Claims (3)

  1. 1.一种取骨体内残留螺钉的扩孔器,包括空心钻头及其前段具有外螺纹的钻柄,其特征是:空心钻头内为一阶梯内孔,该阶梯内孔的大孔后段具有内螺纹,而该空心钻头的后端开设数个斜开口槽,在该阶梯内孔的小孔内滑设一导向杆,在空心钻头的内螺纹与钻柄的外螺纹连接,且该外螺纹的前端面与导向杆的后端面之间设有一螺旋弹簧,又在该外螺纹上套设一套管,该套管前段具有数个斜爪,且与空心钻头的斜开口槽配合,又在该外螺纹上连接一锁紧螺母,且该锁紧螺母的前端面抵靠套管的后端面。 A reamer residue taken vivo bone screw, comprising a hollow drill shank having a front section and an external thread, characterized in that: the hollow drill bit is a stepped bore, macroporous the stepped bore having a section an internal thread, while the rear end of the hollow drill bit defines a plurality of openings inclined grooves, holes in the stepped bore slidably disposed within a guide rod, a drill bit connected to a hollow internal thread the external thread of the shank, and the external thread provided between the rear end surface of the distal end of the guide rod a helical spring, and on which a sleeve provided externally threaded sleeve, the sleeve having a plurality of pre-stage helical claws, and opening of the hollow drill oblique groove engagement, and in It is connected to a lock nut on the external thread, and the end surface of the locking nut against the rear end surface of the sleeve.
  2. 2.按权利要求1所述取骨体内残留螺钉的扩孔器,其特征是:所述导向杆的后端具有大端头,且处在所述阶梯内孔的大孔内。 2. according to claim 1 residual bone screw taken reamer body, characterized in that: the rear end of the guide rod big end with the head, and a large hole in the stepped bore.
  3. 3.按权利要求1所述取骨体内残留钉的扩孔器,其特征是:所述斜开口槽的两侧面皆为斜面,同样所述斜爪两侧面亦为斜面。 3. according to claim 1 taking the residual bone nail reamer body, characterized in that: both side surfaces of the open grooves are all inclined ramp, the same oblique ramp jaw side surfaces also.
CN 01208245 2001-03-07 2001-03-07 Dilator for drawing-out residual screw in bone CN2469899Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 01208245 CN2469899Y (en) 2001-03-07 2001-03-07 Dilator for drawing-out residual screw in bone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 01208245 CN2469899Y (en) 2001-03-07 2001-03-07 Dilator for drawing-out residual screw in bone

Publications (1)

Publication Number Publication Date
CN2469899Y true CN2469899Y (en) 2002-01-09

Family

ID=33628469

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 01208245 CN2469899Y (en) 2001-03-07 2001-03-07 Dilator for drawing-out residual screw in bone

Country Status (1)

Country Link
CN (1) CN2469899Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100398075C (en) 2005-07-05 2008-07-02 上海第二工业大学 Hollow soft drill and its manufacturing method
CN102573667A (en) * 2009-04-02 2012-07-11 乔治·科西 Bone rifling system and method of preparing a bone using such system
CN104013452A (en) * 2014-05-23 2014-09-03 吉林大学 Drill bit special for department of orthopaedics

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100398075C (en) 2005-07-05 2008-07-02 上海第二工业大学 Hollow soft drill and its manufacturing method
CN102573667A (en) * 2009-04-02 2012-07-11 乔治·科西 Bone rifling system and method of preparing a bone using such system
CN102573667B (en) * 2009-04-02 2015-04-29 马丁·M·马劳尔 Bone rifling system and method of preparing a bone using such system
US9084614B2 (en) 2009-04-02 2015-07-21 Orthorifling Systems, Llc Bone rifling system and method of preparing a bone using such system
CN104013452A (en) * 2014-05-23 2014-09-03 吉林大学 Drill bit special for department of orthopaedics

Similar Documents

Publication Publication Date Title
US5190425A (en) Anchor
US6981974B2 (en) Cannulated internally threaded bone screw with aperatured insert
US5263803A (en) Anchor bolt
US6544281B2 (en) Graft fixation using a screw or plug against suture or tissue
US4632101A (en) Orthopedic fastener
US6454768B1 (en) Removable gripping set screw
US4723541A (en) Bone screw and method
US2472103A (en) Modified bone screw holder for surgical drills
US6010505A (en) Supra condylus bone nail
US4013071A (en) Fasteners particularly useful as orthopedic screws
US6250865B1 (en) Screw tipped anchor assembly
US2821979A (en) Intramedullary splint
US5139499A (en) Screw and driver
US20050149031A1 (en) Cannulated fastener system
US20050216027A1 (en) Extraction screwdriver
US5851219A (en) Suture anchor assembly
US5398946A (en) Chuck having one-step lock and release
US5098433A (en) Winged compression bolt orthopedic fastener
US4553942A (en) Device including a screw pin and a driven member for screwing the pin into a tooth
US5649931A (en) Orthopaedic apparatus for driving and/or removing a bone screw
US6436100B1 (en) Cannulated internally threaded bone screw and reduction driver device
US6286401B1 (en) Screwdriver with holding feature for socket head screws
US5076741A (en) Plug ejecting holesaw
US6149654A (en) Intra-articular drill
US4026186A (en) Self-drilling one-piece masonry anchor

Legal Events

Date Code Title Description
C14 Granted
C19 Lapse of patent right due to non-payment of the annual fee