CN202960738U - Bone nail with rapid disassembly function - Google Patents
Bone nail with rapid disassembly function Download PDFInfo
- Publication number
- CN202960738U CN202960738U CN 201220681927 CN201220681927U CN202960738U CN 202960738 U CN202960738 U CN 202960738U CN 201220681927 CN201220681927 CN 201220681927 CN 201220681927 U CN201220681927 U CN 201220681927U CN 202960738 U CN202960738 U CN 202960738U
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- CN
- China
- Prior art keywords
- screw thread
- nail body
- screw
- thread bar
- operation cap
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model relates to the technical field of medical instruments, in particular to a bone nail with a rapid disassembly function. The bone nail is formed by an operation cap, a location stripe, thread stripes, a tapered screw, a bone nail body, side grooves and a swell hole. A pair of side grooves is formed on lateral walls of the bone nail body, and the two side grooves are communicated with the swell hole. One thread stripe is formed in each side groove, an inner lateral wall and an outer lateral wall of each thread stripe are both arc faces with threads, and direction of threads on outer walls of the two thread stripes are opposite. The thread stripes are in clearance fit with the side grooves where the thread stripes are, and the thread stripes can horizontally move along side direction in the side grooves where the thread stripes are. The bone nail removes possibility that the bone nail retreats along clockwise or anti-clockwise direction, improves fixing effects, simultaneously is simple and convenient to operate and has small operation damage and high safety.
Description
Technical field
This utility model relates to technical field of medical instruments, particularly relates to a kind of nail with quick disassembling function.
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.
The utility model content
This utility model is for solving the deficiencies in the prior art, provide under a kind of prerequisite not increasing the osteoclasia area, not only can lock easily the two-part position relationship that has the opposite threads direction on nail, the nail with quick disassembling function that can also unlock easily.
The scheme that solves this utility model technical problem is: have the nail of quick disassembling function, be made of operation cap, positioning strip, screw thread bar, conical screw, nail body, side channel and inflation port.
Wherein, the nail body be the bottom with the cylinder of circular cone, the sidewall of nail body is threaded.The positioning strip that the arc of a pair of protrusion is arranged on the end face of nail body, inflation port are to be in the nail body and blind hole nail body concentric, and the upper end of inflation port opens wide and is between two positioning strips.
Its top of discoidal operation cap is with the screw edge of a knife, there is the corresponding groove of a pair of and described positioning strip the lower end of operation cap, the operation cap is placed in the top of nail body and the groove that described positioning strip is in operation cap lower end, and positioning strip becomes clearance fit relationship with the operation cap.
Have a pair of side channel on the sidewall of nail body, two side channels communicate with inflation port.One screw thread bar is arranged in every side channel, and the interior lateral wall of each screw thread bar is screwed arcwall face, and the hand of spiral of the outer wall of two screw thread bars is opposite.The front and back sidewall of each screw thread bar is a pair of perpendicular that is parallel to each other.The screw thread bar becomes clearance fit relationship and screw thread bar to move along side direction horizontal in the side channel at place with the side channel at place.
Conical screw be the bottom for conical cylinder, the screw thread that the sidewall of conical screw has the screw thread with the inwall of screw thread bar to cooperatively interact, the top of conical screw is with the screw edge of a knife.
When nail is installed, first with thumb and forefinger, two screw thread bars are pressed in described side channel, the bottom of operation cap is enclosed within on the positioning strip on nail body top, with screwdriver, the nail body is screwed in bone, then will operate cap and take off, then with the top screw-in of conical screw from the nail body, under the extruding of conical screw, two screw thread bars respectively from two side channels outwards motion and with bone wall close contact, this moment, nail was locked.
Adopt such scheme, compared with prior art, the utlity model has following marked improvement:
1. the hand of spiral due to two screw thread bar outer walls is opposite, and no matter whole nail needs to which direction to rotate under external force, all can be subject to the resistance of screw thread in the other direction, has therefore played anti-loosening effect, has improved the fixed effect of nail.
2. because this utility model only just can be realized the locking of nail by screwing in conical screw, compare with existing locking of bone nails technology, eliminated very loaded down with trivial details alignment function in the manual locking process, make operation easier, improved operation efficient.
3. this utility model 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 structural representation of the present utility model;
Fig. 2 is the A-A profile of Fig. 1.
In figure: 1. operate cap 2. positioning strip 3. screw thread bar 4. conical screw 5. nail body 6. side channel 7. inflation port
The specific embodiment
The utility model will be further described below in conjunction with drawings and Examples.
Nail with quick disassembling function is made of operation cap 1, positioning strip 2, screw thread bar 3, conical screw 4, nail body 5, side channel 6 and inflation port 7.
Wherein, nail body 5 be the bottom with the cylinder of circular cone, the sidewall of nail body 5 is threaded.The positioning strip 2 that the arc of a pair of protrusion is arranged on the end face of nail body 5, inflation port 7 are to be in nail body 5 and blind holes nail body 5 concentrics, and the upper end of inflation port 7 opens wide and is between two positioning strips 2.
Discoidal operation cap 1 its top is with the screw edge of a knife, there is the corresponding groove of a pair of and described positioning strip 2 lower end of operation cap 1, operation cap 1 is placed in the top of nail body 5 and the groove that described positioning strip 2 is in operation cap 1 lower end, 1 one-tenth clearance fit relationship of positioning strip 2 and operation cap.
Having a pair of side channel 6, two side channels 6 on the sidewall of nail body 5 communicates with inflation port 7.One screw thread bar 3 is arranged in every side channel 6, and the interior lateral wall of each screw thread bar 3 is screwed arcwall face, and the hand of spiral of the outer wall of two screw thread bars 3 is opposite.The front and back sidewall of each screw thread bar 3 is a pair of perpendicular that is parallel to each other.6 one-tenth clearance fit relationship of side channel at screw thread bar 3 and place and screw thread bar 3 can move along side direction horizontal the side channel 6 at place is interior.
When nail is installed, first with thumb and forefinger, two screw thread bars 3 are pressed in described side channel 6, the bottom of operation cap 1 is enclosed within on the positioning strip 2 on nail body 5 tops, with screwdriver, nail body 5 is screwed in bone, then will operate cap 1 and take off, then with the top screw-in of conical screw 4 from nail body 5, under the extruding of conical screw 4, two screw thread bars 3 respectively from two side channels 6 outwards motion and with bone wall close contact, this moment, nail was locked.
Claims (1)
1. nail with quick disassembling function, by the operation cap, positioning strip, the screw thread bar, conical screw, the nail body, side channel and inflation port consist of, it is characterized in that: the nail body is that the bottom is with the cylinder of circular cone, the sidewall of nail body is threaded, the positioning strip that the arc of a pair of protrusion is arranged on the end face of nail body, inflation port is to be in the nail body and blind hole nail body concentric, the upper end of inflation port opens wide and is between two positioning strips, its top of discoidal operation cap is with the screw edge of a knife, there is the corresponding groove of a pair of and described positioning strip the lower end of operation cap, the operation cap is placed in the top of nail body and the groove that described positioning strip is in operation cap lower end, positioning strip becomes clearance fit relationship with the operation cap, have a pair of side channel on the sidewall of nail body, two side channels communicate with inflation port, one screw thread bar is arranged in every side channel, the interior lateral wall of each screw thread bar is screwed arcwall face, and the hand of spiral of the outer wall of two screw thread bars is opposite, the front and back sidewall of each screw thread bar is a pair of perpendicular that is parallel to each other, the screw thread bar becomes clearance fit relationship and screw thread bar to move along side direction horizontal in the side channel at place with the side channel at place, conical screw is that the bottom is conical cylinder, the screw thread that the sidewall of conical screw has the screw thread with the inwall of screw thread bar to cooperatively interact, the top of conical screw is with the screw edge of a knife.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220681927 CN202960738U (en) | 2012-12-08 | 2012-12-08 | Bone nail with rapid disassembly function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220681927 CN202960738U (en) | 2012-12-08 | 2012-12-08 | Bone nail with rapid disassembly function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202960738U true CN202960738U (en) | 2013-06-05 |
Family
ID=48501877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220681927 Withdrawn - After Issue CN202960738U (en) | 2012-12-08 | 2012-12-08 | Bone nail with rapid disassembly function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202960738U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103126760A (en) * | 2012-12-08 | 2013-06-05 | 宁波市鄞州云帆工程咨询有限公司 | Thread discontinuous detachable expansion bone nail |
| CN112274236A (en) * | 2020-11-05 | 2021-01-29 | 孙金堂 | Assembled easily-detachable bone nail |
-
2012
- 2012-12-08 CN CN 201220681927 patent/CN202960738U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103126760A (en) * | 2012-12-08 | 2013-06-05 | 宁波市鄞州云帆工程咨询有限公司 | Thread discontinuous detachable expansion bone nail |
| CN112274236A (en) * | 2020-11-05 | 2021-01-29 | 孙金堂 | Assembled easily-detachable bone nail |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130605 Effective date of abandoning: 20150909 |
|
| RGAV | Abandon patent right to avoid regrant |