CN104013452A - Drill bit special for department of orthopaedics - Google Patents

Drill bit special for department of orthopaedics Download PDF

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Publication number
CN104013452A
CN104013452A CN201410222171.9A CN201410222171A CN104013452A CN 104013452 A CN104013452 A CN 104013452A CN 201410222171 A CN201410222171 A CN 201410222171A CN 104013452 A CN104013452 A CN 104013452A
Authority
CN
China
Prior art keywords
pole
center rod
center
drilling machine
hollow
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CN201410222171.9A
Other languages
Chinese (zh)
Other versions
CN104013452B (en
Inventor
桑海燕
张春苗
丁海燕
张舒
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jilin University
Original Assignee
Jilin University
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
Application filed by Jilin University filed Critical Jilin University
Priority to CN201410222171.9A priority Critical patent/CN104013452B/en
Publication of CN104013452A publication Critical patent/CN104013452A/en
Application granted granted Critical
Publication of CN104013452B publication Critical patent/CN104013452B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1613—Component parts
    • A61B17/1615—Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material
    • A61B17/1617—Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material with mobile or detachable parts

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

The invention discloses a drill bit for the department of orthopaedics. The drill bit is formed by a hollow sleeve drill, an inner center rod and an outer center rod. The head portion of the hollow sleeve drill is connected with a milling cutter in a welded mode, the outer center rod is sleeved with the hollow sleeve drill in a penetrating mode, a thrust bearing is arranged between the tail portion of the outer center rod and the hollow sleeve drill, a first bearing and a second bearing are arranged between the outer wall of the outer center rod and the inner wall of the hollow sleeve drill, the inner center rod is sleeved with the outer center rod in a penetrating mode, a spring is arranged between the tail portion of the inner center rod and the outer center rod, the inner center rod is a cylinder which is provided with at least strip-shaped sliding key, the strip-shaped sliding keys are located in strip-shaped grooves, the head end of the inner center rod is a hexagonal prism which can be inserted into an inner hexagonal hole of a corresponding steel nail, the inner center rod penetrates through the hollow sleeve drill, the hexagonal prism penetrates through the milling cutter, a first gear is arranged outside the hollow sleeve drill and meshed with a driving gear, and the driving gear is connected with an output shaft of a motor. According to the drill bit, steel nails rusted together with a steel plate can be smoothly taken out, therefore steel plates fixed to bones can be smoothly taken out, and secondary injuries to patients are avoided.

Description

Orthopaedics target drill
Technical field
The present invention relates to a kind of medical apparatus and instruments, particularly a kind of orthopaedics target drill.
Background technology
At present, can take the method for Operation steel plate to fix the bone injury fractureing for fracture patient, steel plate need to be fixed with steel nail, between steel plate and steel nail, is to be threaded.Certain hour takes out steel plate later again, but often due to overlong time, the situation of corrosion in steel plate can occur steel nail, so the difficulty of taking-up steel nail is large, and easily patient is caused to secondary injury.
Summary of the invention
The steel nail corrosion the object of the invention is in order to solve fixing bone injury is difficult for the problem of taking out in steel plate, and a kind of orthopaedics target drill is provided.
The present invention is by Hollow trepanning drilling machine, interior center-pole and outer center-pole composition, wherein the head of Hollow trepanning drilling machine is welded with milling cutter, milling cutter is hollow, outer center-pole is set in Hollow trepanning drilling machine, between the afterbody of outer center-pole and Hollow trepanning drilling machine, be provided with thrust bearing, between the outer wall of outer center-pole and the inwall of Hollow trepanning drilling machine, be provided with clutch shaft bearing and the second bearing, the head of outer center-pole is hollow, inside is coated with interior center-pole, between the afterbody of interior center-pole and outer center-pole, be provided with spring, interior center-pole is cylinder, on cylinder, be provided with at least one bar shaped feather key, the inwall of outer center-pole offers strip groove, bar shaped feather key is arranged in strip groove, the head end of interior center-pole is six prisms, six prisms can be inserted in the inner hexagonal hole of corresponding steel nail, interior center-pole is through Hollow trepanning drilling machine, six prisms are through milling cutter, the outer setting of Hollow trepanning drilling machine has the first gear to engage with driving gear, driving gear connects with the output shaft of motor.
Work process of the present invention: use time of the present invention, the afterbody of outer center-pole and motor are fixed on electric drill, the first gear is meshed with the driving gear on motor output shaft, six prisms of interior center-pole head end are withstood in the steel nail inner hexagonal hole of fixation steel plate and support and locate by spring, driven by motor driving gear rotates, driving gear drives Hollow trepanning drilling machine quick rotation, Hollow trepanning drilling machine drives milling cutter to rotate steel nail Steel Plate Guide Drill is around made to steel nail and steel plate disengaging thoroughly, then use instrument that steel nail is screwed out, after all steel nails take out, the steel plate of fixing bone just can take out smoothly.
Beneficial effect of the present invention:
The present invention can successfully take out the steel nail together with steel plate corrosion, and then can successfully the steel plate being fixed on bone be taken out, and has avoided the secondary injury to patient.
Brief description of the drawings
Fig. 1 is longitudinal sectional view of the present invention.
Fig. 2 is that A-A in Fig. 1 is to cutaway view.
Fig. 3 is that B in Fig. 1 is to view.
Fig. 4 is that C-C in Fig. 3 is to cutaway view.
Detailed description of the invention
Refer to Fig. 1, shown in Fig. 2 and Fig. 3, for embodiments of the invention, the present embodiment is by Hollow trepanning drilling machine 1, interior center-pole 2 and outer center-pole 3 form, wherein the head of Hollow trepanning drilling machine 1 is welded with milling cutter 4, milling cutter 4 is hollow, outer center-pole 3 is set in Hollow trepanning drilling machine 1, between the afterbody of outer center-pole 3 and Hollow trepanning drilling machine 1, be provided with thrust bearing 5, between the inwall of the outer wall of outer center-pole 3 and Hollow trepanning drilling machine 1, be provided with clutch shaft bearing 6 and the second bearing 7, the head of outer center-pole 3 is hollow, inside is coated with interior center-pole 2, between the afterbody of interior center-pole 2 and outer center-pole 3, be provided with spring 8, interior center-pole 2 is cylinder, on cylinder, be provided with three bar shaped feather keys 22, the inwall of outer center-pole 3 offers three strip grooves 31, bar shaped feather key 22 is arranged in strip groove 31, the head end of interior center-pole 2 is six prisms 21, six prisms 21 can be inserted in the inner hexagonal hole of corresponding steel nail, interior center-pole 2 is through Hollow trepanning drilling machine 1, six prisms 21 are through milling cutter 4, the outer setting of Hollow trepanning drilling machine 1 has the first gear 9 to engage with driving gear 10, driving gear 10 connects with the output shaft of motor 11.
Blade 41 shapes of milling cutter 4 as shown in Figure 3 and Figure 4.
Work process of the present invention:
Use time of the present invention, the afterbody of outer center-pole 3 and motor 11 are fixed on electric drill, the first gear 9 is meshed with the driving gear 10 on motor 11 output shafts, six prisms 21 of interior center-pole 2 head ends are withstood in the steel nail inner hexagonal hole of fixation steel plate and support and locate by spring 8, motor 11 drives driving gear 10 to rotate, driving gear 10 drives Hollow trepanning drilling machine 1 quick rotation, Hollow trepanning drilling machine 1 drives milling cutter 4 to rotate steel nail Steel Plate Guide Drill is around made to steel nail and steel plate disengaging thoroughly, then use instrument that steel nail is screwed out, after all steel nails take out, the steel plate of fixing bone just can take out smoothly.

Claims (1)

1. an orthopaedics target drill, it is characterized in that: be by Hollow trepanning drilling machine (1), interior center-pole (2) and outer center-pole (3) composition, wherein the head of Hollow trepanning drilling machine (1) is welded with milling cutter (4), milling cutter (4) is hollow, outer center-pole (3) is set in Hollow trepanning drilling machine (1), between the afterbody of outer center-pole (3) and Hollow trepanning drilling machine (1), be provided with thrust bearing (5), between the inwall of the outer wall of outer center-pole (3) and Hollow trepanning drilling machine (1), be provided with clutch shaft bearing (6) and the second bearing (7), the head of outer center-pole (3) is hollow, inside is coated with interior center-pole (2), between the afterbody of interior center-pole (2) and outer center-pole (3), be provided with spring (8), interior center-pole (2) is cylinder, on cylinder, be provided with at least one bar shaped feather key (22), the inwall of outer center-pole (3) offers strip groove (31), bar shaped feather key (22) is arranged in strip groove (31), the head end of interior center-pole (2) is six prisms (21), six prisms (21) can be inserted in the inner hexagonal hole of corresponding steel nail, interior center-pole (2) is through Hollow trepanning drilling machine (1), six prisms (21) are through milling cutter (4), the outer setting of Hollow trepanning drilling machine (1) has the first gear (9) to engage with driving gear (10), driving gear (10) connects with the output shaft of motor (11).
CN201410222171.9A 2014-05-23 2014-05-23 Orthopaedics target drill Expired - Fee Related CN104013452B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410222171.9A CN104013452B (en) 2014-05-23 2014-05-23 Orthopaedics target drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410222171.9A CN104013452B (en) 2014-05-23 2014-05-23 Orthopaedics target drill

Publications (2)

Publication Number Publication Date
CN104013452A true CN104013452A (en) 2014-09-03
CN104013452B CN104013452B (en) 2016-06-08

Family

ID=51430654

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410222171.9A Expired - Fee Related CN104013452B (en) 2014-05-23 2014-05-23 Orthopaedics target drill

Country Status (1)

Country Link
CN (1) CN104013452B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106691574A (en) * 2015-11-16 2017-05-24 孔庆华 Drill bit for department of orthopaedics
CN107518930A (en) * 2017-10-14 2017-12-29 师新虎 A kind of bone drill for medical robot

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2221948Y (en) * 1995-04-28 1996-03-13 霍庆生 Medical bone reamer
JPH11128243A (en) * 1997-10-31 1999-05-18 Homuzu Giken:Kk Instrument for extracting embedded member
US5951554A (en) * 1997-10-02 1999-09-14 Holmes; Russell P. Screw removal system
CN2469899Y (en) * 2001-03-07 2002-01-09 邓国勋 Dilator for drawing-out residual screw in bone
CN203107267U (en) * 2013-02-05 2013-08-07 山东省立医院 Orthopedic nail taking device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2221948Y (en) * 1995-04-28 1996-03-13 霍庆生 Medical bone reamer
US5951554A (en) * 1997-10-02 1999-09-14 Holmes; Russell P. Screw removal system
JPH11128243A (en) * 1997-10-31 1999-05-18 Homuzu Giken:Kk Instrument for extracting embedded member
CN2469899Y (en) * 2001-03-07 2002-01-09 邓国勋 Dilator for drawing-out residual screw in bone
CN203107267U (en) * 2013-02-05 2013-08-07 山东省立医院 Orthopedic nail taking device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106691574A (en) * 2015-11-16 2017-05-24 孔庆华 Drill bit for department of orthopaedics
CN107518930A (en) * 2017-10-14 2017-12-29 师新虎 A kind of bone drill for medical robot
CN107518930B (en) * 2017-10-14 2018-11-30 刘勇 A kind of bone drill for medical robot

Also Published As

Publication number Publication date
CN104013452B (en) 2016-06-08

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Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C53 Correction of patent of invention or patent application
CB03 Change of inventor or designer information

Inventor after: He Yuquan

Inventor after: Sang Haiyan

Inventor after: Zhang Chunmiao

Inventor after: Ding Haiyan

Inventor after: Zhang Shu

Inventor before: Sang Haiyan

Inventor before: Zhang Chunmiao

Inventor before: Ding Haiyan

Inventor before: Zhang Shu

COR Change of bibliographic data

Free format text: CORRECT: INVENTOR; FROM: SANG HAIYAN ZHANG CHUNMIAO DING HAIYAN ZHANG SHU TO: HE YUQUAN SANG HAIYAN ZHANG CHUNMIAO DING HAIYAN ZHANG SHU

C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160608

Termination date: 20170523