CN103126759A - Push rod disassembling double-way self-locking bone screw - Google Patents
Push rod disassembling double-way self-locking bone screw Download PDFInfo
- Publication number
- CN103126759A CN103126759A CN2012105334334A CN201210533433A CN103126759A CN 103126759 A CN103126759 A CN 103126759A CN 2012105334334 A CN2012105334334 A CN 2012105334334A CN 201210533433 A CN201210533433 A CN 201210533433A CN 103126759 A CN103126759 A CN 103126759A
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- hole
- screw
- clamping block
- push rod
- screwing
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 16
- 230000000694 effects Effects 0.000 claims abstract description 7
- 230000002457 bidirectional effect Effects 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 210000003141 lower extremity Anatomy 0.000 claims description 3
- 238000000034 method Methods 0.000 description 5
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
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Abstract
The invention relates to the technical field of medical apparatus and instruments, in particular to a push rod disassembling double-way self-locking bone screw. The push rod disassembling double-way self-locking bone screw is composed of an upper screw body, an inserting strip, a through hole, a push rod, a lower screw body, a plugging piece, a leaf spring, a concave pit, a locking block, an upper inclined surface, an upper flat surface, a right side inclined surface and a horizontal through hole. The upper screw body and the lower screw body are opposite in direction of threads. The top end of the upper screw body and the top end of the lower screw body are respectively provided with a screwdriver opening. A blind hole which is formed in the upper end of the lower screw body, and the upper screw body are coaxial. The concave pit which is cubic is formed in the inner side wall of the blind hole. The push rod disassembling double-way self-locking bone screw has the advantages of completely eradicating the possibility that a bone screw retracts along a clockwise direction or an anti-clockwise direction, improving a fixing effect of the bone screw, and meanwhile being simple in operation, small in operating damage and high in safety.
Description
Technical field
The present invention relates to technical field of medical instruments, particularly relate to a kind of push rod dismountable bidirectional self-locking nail.
Background technology
The locking problem of nail is a great problem in bone surgery.The patent No. is that 200910059277.0 " inverting self-locking nail " and the patent No. are that 201010005355.1 " slip-type lock bone nail " all adopts the position relationship of two sections screws that hand of spiral is opposite to fix, and realizes preventing that nail is along the loosening technique effect of hand of spiral.But the technological deficiency that both all exists some to be difficult to be solved.
the patent No. is that 200910059277.0 " inverting self-locking nail " will reach its described technique effect, the most critical sport technique segment be documents description page 1 the 6th row reciprocal described " make in the contrary M shape slot that advances head one group of cross slot with align along the cross slot that advances bar " advance head and suitablely advance bar and all be in same fixing hole due to contrary, contraryly advance head along what enter to have blocked after bar screws in the inside, the operator can't observe position and the direction of one group of cross slot in the contrary rice font slot that advances head, again how, " one group of cross slot in the contrary M shape slot that advances head is alignd " with the suitable cross slot that advances bar? if this problem does not solve, how will transplant a cutting again simultaneously and to insert along advancing in bar and the contrary slot that advances head? can't insert cutting, along advancing bar and just can't fixing against the position relationship that advances head.In the description of this patent, above-mentioned needs are carried out the technological difficulties that creative work could solve, do not propose any solution.
And being the mode that two screws in 201010005355.1 " slip-type lock bone nail " lean on mutually by sidewall, the patent No. screws in bone, facilitated and made the rice font slot at two screw tops all clearly be illustrated in face of the operator, the operator can be adjusted to identical direction with two slots, be beneficial to cutting is knocked in slot, but this technical scheme is due to the mode that adopts two screws to use side by side, damage area to bone has increased by one times, increase the danger of bone splits, therefore remained worthless technical scheme.
In addition, how above-mentioned two schemes have only solved the problem with the position relationship locking of two screws, but do not have effective scheme can remove easily the locking of two screws, and the nail that therefore will remove in above-mentioned two schemes is very difficult thing.
Summary of the invention
The present invention is for solving the deficiencies in the prior art, provide under a kind of prerequisite not increasing the osteoclasia area, two bodies of screw of locking screw thread opposite direction easily can also be removed the push rod dismountable bidirectional self-locking nail of the locking of two bodies of screw easily.
The scheme that solves the technology of the present invention problem is: push rod dismountable bidirectional self-locking nail is made of screwing body, cutting, through hole, push rod, the lower body of screw, plugging sheet, spring leaf, pit, clamping block, ramp, upper plane, inclined-plane, right side and cross through hole.Wherein screwing body and the lower body of screw have opposite hand of spiral, and the top of screwing body and the lower body of screw is all with the screw edge of a knife.One blind hole coaxial with the screwing body arranged in the upper end of the lower body of screw, have a cube shaped pit on the medial wall of described blind hole.One push rod as a whole and coaxial with the screwing body arranged in the bottom of screwing body, and push rod inserts from top to bottom in described blind hole and with the lower body of screw and becomes clearance fit relationship.Cross through hole laterally runs through push rod, one plugging sheet that is bonded as one with the outer wall of push rod is arranged with an end shutoff of cross through hole at an end of cross through hole, through hole vertically runs through the screwing body from the top of screwing body and communicates with cross through hole, on the sidewall of the upper end of through hole, screw thread is arranged.One clamping block is arranged in cross through hole, clamping block is the block with horizontal bottom and vertical left surface, the end face of clamping block is that the upper plane by the ramp of left side and right-hand part consists of, and the base on the inclined-plane, right side of clamping block is positioned at the left side of the top margin on inclined-plane, right side.The top margin of ramp is positioned at the left side on the base of ramp, and upper plane is horizontal plane.Be provided with arc spring leaf between the medial wall of the left side wall of clamping block and plugging sheet.Cutting be the upper end with the cylinder of the screw edge of a knife, screw thread is arranged on the upper end sidewall of cutting and matches with the screw thread of through-hole side wall.The vertical distance of the upper lower limb of described pit is greater than the bottom surface of clamping block and the vertical distance between upper plane, and the difference of these two distances rotates a circle in the distance of vertical direction motion greater than the screwing body.
In the time of need to being fixed skeleton, first the lower body of screw is screwed in bone, then insert push rod in described cross through hole and rotate the screwing body and make it to move downward.When the upper edge of inclined-plane, right side and cross through hole comes in contact, under the guiding on inclined-plane, right side, clamping block move to the left and compression spring leaf until in the complete retraction cross through hole of the right-hand member of clamping block, continuing rotation screwing body moves downward push rod, when the top edge on inclined-plane, right side aligns with pit in the horizontal direction lower than the top edge of described pit and clamping block, the right-hand member of clamping block inserts in pit under the promotion of spring leaf, at this moment, the position relationship of screwing body and the lower body of screw locks mutually.
In the time of nail need to being taken out, first will transplant a cutting to insert in described through hole and transplant a cutting to make to transplant a cutting with the screwdriver rotation and move downward, when the bottom of transplanting a cutting touches ramp, under the guide effect of ramp, clamping block is moved to the left, when in the complete retraction cross through hole of the right-hand member of clamping block, the locking relation of the lower body of screw and screwing body is disengaged.Then counter-rotate the screwing body screwing body is moved upward, the lower body of screw of reverse rotation takes out the lower body of screw again after the screwing body takes out.
Adopt such scheme, compared with prior art, the present invention has following marked improvement:
1. because will withdrawing from skeleton, two bodies of screw need rotation in the opposite direction, and clamping block just is in pit the position relationship locking with two bodies of screw, this has just stopped nail along clockwise or the probability that counterclockwise withdraws from, improved the fixed effect of nail, avoided bringing new misery because again hammering into nail to the patient.
2. because the present invention can realize automatically locking of in the nail process is installed two bodies of screw, compared with prior art, eliminate the troublesome operation such as aligning in the manual locking process, made operation easier, improved operation efficient.
3. because the present invention only need transplant a cutting the locking that just can remove two bodies of screw by screw-in, easy to operate.
4. the present invention compared with prior art, when realizing that two bodies of screw lock mutually, need not to increase the damaged area of bone, makes operation have less damage and higher safety.
Description of drawings
Fig. 1 is screwing body of the present invention and the structural representation of the lower body of screw when mutual position relationship is locked;
Fig. 2 is after through hole is inserted in cutting, screwing body and the structural representation of the lower body of screw when the locking of mutual position relationship is disengaged.
In figure: plane 12. inclined-plane, right side 13. cross through hole on 05. time body of screw of 01. screwing body 02. cutting 03. through hole 04. push rod, 06. plugging sheet 07. spring leaf 08. pit 09. clamping block 10. ramps 11.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
Push rod dismountable bidirectional self-locking nail is made of screwing body 01, cutting 02, through hole 03, push rod 04, the lower body of screw 05, plugging sheet 06, spring leaf 07, pit 08, clamping block 09, ramp 10, upper plane 11, inclined-plane, right side 12 and cross through hole 13.Wherein screwing body 01 and the lower body of screw 05 have opposite hand of spiral, and the top of screwing body 01 and the lower body of screw 05 is all with the screw edge of a knife.One blind hole coaxial with screwing body 05 arranged in the upper end of the lower body of screw 05, have a cube shaped pit 08 on the medial wall of described blind hole.One push rod 04 as a whole and coaxial with screwing body 01 arranged in the bottom of screwing body 01, push rod 04 insert from top to bottom in described blind hole and with 05 one-tenth clearance fit relationship of the lower body of screw.Cross through hole 13 laterally runs through push rod 04, a plugging sheet 06 that is bonded as one with the outer wall of push rod 04 is arranged with an end shutoff of cross through hole 13 at an end of cross through hole 13, through hole 03 vertically runs through screwing body 01 and communicates with cross through hole 13 from the top of screwing body 01, on the sidewall of the upper end of through hole 03, screw thread is arranged.One clamping block 09 is arranged in cross through hole 13, clamping block 09 is the block with horizontal bottom and vertical left surface, the end face of clamping block 09 is that the upper plane 11 by the ramp 10 of left side and right-hand part consists of, and the base on the inclined-plane, right side 12 of clamping block 09 is positioned at the left side of the top margin on inclined-plane, right side 12.The top margin of ramp 10 is positioned at the left side on the base of ramp 10, and upper plane 11 is horizontal plane.Be provided with arc spring leaf 07 between the medial wall of the left side wall of clamping block 09 and plugging sheet 06.Transplant a cutting 02 be the upper end with the cylinder of the screw edge of a knife, transplanting a cutting has screw thread and matches with the screw thread of through hole 03 sidewall on 02 upper end sidewall.The vertical distance of the upper lower limb of described pit 08 is greater than the bottom surface of clamping block 09 and the vertical distance between upper plane 11, and the difference of these two distances rotates a circle in the distance of vertical direction motion greater than screwing body 01.
In the time of need to being fixed skeleton, first the lower body of screw 05 is screwed in bone, then push rod 04 is inserted in described cross through hole 13 and rotates screwing body 01 make it to move downward.When the upper edge of inclined-plane, right side 12 and cross through hole 13 comes in contact, under the guiding on inclined-plane, right side 12, clamping block 09 move to the left and compression spring leaf 07 until in the complete retraction cross through hole 13 of the right-hand member of clamping block 09, continuing rotation screwing body 01 moves downward push rod 04, when the top edge on inclined-plane, right side 12 aligns with pit 08 in the horizontal direction lower than the top edge of described pit 08 and clamping block 09, the right-hand member of clamping block 09 inserts in pit 08 under the promotion of spring leaf 07, at this moment, the position relationship of screwing body 01 and the lower body of screw 05 locks mutually.
In the time of nail need to being taken out, first will transplant a cutting and 02 insert in described through hole 03 and transplant a cutting with the screwdriver rotation and 02 make to transplant a cutting and 02 move downward, when the bottom of cutting 02 touches ramp 10, under the guide effect of ramp 10, clamping block 09 is moved to the left, when the complete retraction cross through hole 13 of the right-hand member of clamping block 09 was interior, the locking relation of the lower body of screw 05 and screwing body 01 was disengaged.Then counter-rotate screwing body 01 screwing body 01 is moved upward, the lower body of screw 05 of reverse rotation takes out the lower body of screw 05 again after screwing body 01 takes out.
Claims (1)
1. push rod dismountable bidirectional self-locking nail, by the screwing body, transplant a cutting, through hole, push rod, the lower body of screw, plugging sheet, spring leaf, pit, clamping block, ramp, upper plane, inclined-plane, right side and cross through hole consist of, it is characterized in that: screwing body and the lower body of screw have opposite hand of spiral, the top of screwing body and the lower body of screw is all with the screw edge of a knife, one blind hole coaxial with the screwing body arranged in the upper end of the lower body of screw, have a cube shaped pit on the medial wall of described blind hole, one push rod as a whole and coaxial with the screwing body arranged in the bottom of screwing body, push rod inserts from top to bottom in described blind hole and with the lower body of screw and becomes clearance fit relationship, cross through hole laterally runs through push rod, one plugging sheet that is bonded as one with the outer wall of push rod is arranged with an end shutoff of cross through hole at an end of cross through hole, through hole vertically runs through the screwing body from the top of screwing body and communicates with cross through hole, on the sidewall of the upper end of through hole, screw thread is arranged, one clamping block is arranged in cross through hole, clamping block is the block with horizontal bottom and vertical left surface, the end face of clamping block is that the upper plane by the ramp of left side and right-hand part consists of, the base on the inclined-plane, right side of clamping block is positioned at the left side of the top margin on inclined-plane, right side, the top margin of ramp is positioned at the left side on the base of ramp, upper plane is horizontal plane, be provided with arc spring leaf between the medial wall of the left side wall of clamping block and plugging sheet, cutting is that the upper end is with the cylinder of the screw edge of a knife, screw thread is arranged and match with the screw thread of through-hole side wall on the upper end sidewall of transplanting a cutting, the vertical distance of the upper lower limb of described pit is greater than the bottom surface of clamping block and the vertical distance between upper plane, and the difference of these two distances rotates a circle in the distance of vertical direction motion greater than the screwing body, in the time of need to being fixed skeleton, first the lower body of screw is screwed in bone, again push rod is inserted in described cross through hole and rotate the screwing body and make it to move downward, when the upper edge of inclined-plane, right side and cross through hole comes in contact, under the guiding on inclined-plane, right side, clamping block move to the left and compression spring leaf until in the complete retraction cross through hole of the right-hand member of clamping block, continuing rotation screwing body moves downward push rod, when the top edge on inclined-plane, right side aligns with pit in the horizontal direction lower than the top edge of described pit and clamping block, the right-hand member of clamping block inserts in pit under the promotion of spring leaf, at this moment, the position relationship of screwing body and the lower body of screw locks mutually, in the time of nail need to being taken out, first will transplant a cutting to insert in described through hole and transplant a cutting to make to transplant a cutting with the screwdriver rotation and move downward, when the bottom of transplanting a cutting touches ramp, under the guide effect of ramp, clamping block is moved to the left, when in the complete retraction cross through hole of the right-hand member of clamping block, the locking relation of the lower body of screw and screwing body is disengaged, then counter-rotating the screwing body moves upward the screwing body, the lower body of screw of reverse rotation takes out the lower body of screw again after the screwing body takes out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210533433.4A CN103126759B (en) | 2012-12-08 | 2012-12-08 | Push rod disassembling double-way self-locking bone screw |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210533433.4A CN103126759B (en) | 2012-12-08 | 2012-12-08 | Push rod disassembling double-way self-locking bone screw |
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| CN103126759A true CN103126759A (en) | 2013-06-05 |
| CN103126759B CN103126759B (en) | 2014-12-24 |
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| CN201210533433.4A Active CN103126759B (en) | 2012-12-08 | 2012-12-08 | Push rod disassembling double-way self-locking bone screw |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105769314A (en) * | 2016-03-27 | 2016-07-20 | 陈伟 | Detachable pedicle screw |
| CN106264700A (en) * | 2016-08-31 | 2017-01-04 | 李志强 | A kind of pivotal expansion bone nail |
| CN106618705A (en) * | 2017-01-23 | 2017-05-10 | 南京鼓楼医院 | Flexible connecting vertebral pedicle screw |
| CN107224322A (en) * | 2017-06-05 | 2017-10-03 | 广州爱锘德医疗器械有限公司 | Bone cement injector |
| CN108245718A (en) * | 2018-01-25 | 2018-07-06 | 杨长喜 | A kind of simple and easy to do cyst of jaw drainage system |
| CN108560898A (en) * | 2018-07-03 | 2018-09-21 | 河北九晟建材科技有限公司 | Metal protection expanded metals integral bonding attachment |
| CN109352299A (en) * | 2018-11-19 | 2019-02-19 | 营口金辰机械股份有限公司 | Discarded crystal silicon solar battery component aluminium frame automatic dismantling method and apparatus |
| CN110786921A (en) * | 2019-11-05 | 2020-02-14 | 邹祥 | Medical bone nail |
| CN111407387A (en) * | 2020-03-10 | 2020-07-14 | 昶盛(物料应用制品)有限公司 | Screw assembly for bone fixation and bone fixation device |
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| US2191944A (en) * | 1937-04-29 | 1940-02-27 | Eaton Mfg Co | Self-locking valve tappet screw |
| CN2508043Y (en) * | 2001-08-24 | 2002-08-28 | 石季尧 | Reverse self-locking self-tapping screw with two-way thread |
| CN101548907A (en) * | 2009-05-14 | 2009-10-07 | 梁伟 | Inverting self-locking nail |
| US20100042162A1 (en) * | 2008-08-12 | 2010-02-18 | Warsaw Orthopedic, Inc. | Self-locking surgical fastener |
| CN101721243A (en) * | 2010-01-14 | 2010-06-09 | 成都峻峰科技开发有限公司 | Slip-type lock bone nail |
| CN102606606A (en) * | 2011-02-22 | 2012-07-25 | 汪砚秋 | Check bolt with left-handed threads |
-
2012
- 2012-12-08 CN CN201210533433.4A patent/CN103126759B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2191944A (en) * | 1937-04-29 | 1940-02-27 | Eaton Mfg Co | Self-locking valve tappet screw |
| CN2508043Y (en) * | 2001-08-24 | 2002-08-28 | 石季尧 | Reverse self-locking self-tapping screw with two-way thread |
| US20100042162A1 (en) * | 2008-08-12 | 2010-02-18 | Warsaw Orthopedic, Inc. | Self-locking surgical fastener |
| CN101548907A (en) * | 2009-05-14 | 2009-10-07 | 梁伟 | Inverting self-locking nail |
| CN101721243A (en) * | 2010-01-14 | 2010-06-09 | 成都峻峰科技开发有限公司 | Slip-type lock bone nail |
| CN102606606A (en) * | 2011-02-22 | 2012-07-25 | 汪砚秋 | Check bolt with left-handed threads |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105769314A (en) * | 2016-03-27 | 2016-07-20 | 陈伟 | Detachable pedicle screw |
| CN106264700A (en) * | 2016-08-31 | 2017-01-04 | 李志强 | A kind of pivotal expansion bone nail |
| CN106264700B (en) * | 2016-08-31 | 2019-01-11 | 李志强 | A kind of pivotal expansion bone nail |
| CN106618705A (en) * | 2017-01-23 | 2017-05-10 | 南京鼓楼医院 | Flexible connecting vertebral pedicle screw |
| CN106618705B (en) * | 2017-01-23 | 2018-09-21 | 南京鼓楼医院 | A kind of flexible connection pedicle screw |
| CN107224322A (en) * | 2017-06-05 | 2017-10-03 | 广州爱锘德医疗器械有限公司 | Bone cement injector |
| CN107224322B (en) * | 2017-06-05 | 2023-12-26 | 广州爱锘德医疗器械有限公司 | bone cement injector |
| CN108245718B (en) * | 2018-01-25 | 2020-10-30 | 杨长喜 | Simple and easy jaw cyst drainage device |
| CN108245718A (en) * | 2018-01-25 | 2018-07-06 | 杨长喜 | A kind of simple and easy to do cyst of jaw drainage system |
| CN108560898A (en) * | 2018-07-03 | 2018-09-21 | 河北九晟建材科技有限公司 | Metal protection expanded metals integral bonding attachment |
| CN109352299B (en) * | 2018-11-19 | 2023-08-25 | 营口金辰机械股份有限公司 | Automatic dismounting method and device for aluminum frame of waste crystalline silicon solar cell module |
| CN109352299A (en) * | 2018-11-19 | 2019-02-19 | 营口金辰机械股份有限公司 | Discarded crystal silicon solar battery component aluminium frame automatic dismantling method and apparatus |
| CN110786921A (en) * | 2019-11-05 | 2020-02-14 | 邹祥 | Medical bone nail |
| CN110786921B (en) * | 2019-11-05 | 2021-04-13 | 邹祥 | Medical bone nail |
| CN111407387A (en) * | 2020-03-10 | 2020-07-14 | 昶盛(物料应用制品)有限公司 | Screw assembly for bone fixation and bone fixation device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103126759B (en) | 2014-12-24 |
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Denomination of invention: Push rod detachable bidirectional self-locking bone nail Effective date of registration: 20211008 Granted publication date: 20141224 Pledgee: Industrial Bank Co.,Ltd. Tai'an Branch Pledgor: SHANDONG KANGSHENG MEDICAL EQUIPMENT Co.,Ltd. Registration number: Y2021980010353 |
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Address after: No. 9, Nanliu Street, Dawenkou Industrial Park, Daiyue District, Tai'an City, Shandong Province, 271000 Patentee after: Shandong Kangsheng Medical Device Co.,Ltd. Address before: North of Dawenkou Gypsum Industrial Park, Daiyue District, Tai'an City, Shandong Province, 271000 Patentee before: SHANDONG KANGSHENG MEDICAL EQUIPMENT Co.,Ltd. |
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Date of cancellation: 20230421 Granted publication date: 20141224 Pledgee: Industrial Bank Co.,Ltd. Tai'an Branch Pledgor: SHANDONG KANGSHENG MEDICAL EQUIPMENT Co.,Ltd. Registration number: Y2021980010353 |