CN213098262U - Combined device for solving problem of difficulty in dismantling locking screw - Google Patents
Combined device for solving problem of difficulty in dismantling locking screw Download PDFInfo
- Publication number
- CN213098262U CN213098262U CN202021639812.8U CN202021639812U CN213098262U CN 213098262 U CN213098262 U CN 213098262U CN 202021639812 U CN202021639812 U CN 202021639812U CN 213098262 U CN213098262 U CN 213098262U
- Authority
- CN
- China
- Prior art keywords
- hollow sleeve
- head end
- combination
- locating lever
- locking screw
- 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.)
- Expired - Fee Related
Links
- 239000011324 bead Substances 0.000 claims 2
- 239000000956 alloy Substances 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 claims 1
- 239000002131 composite material Substances 0.000 claims 1
- 210000000988 bone and bone Anatomy 0.000 abstract description 7
- 230000006378 damage Effects 0.000 abstract description 3
- 210000004872 soft tissue Anatomy 0.000 abstract description 2
- 230000003685 thermal hair damage Effects 0.000 abstract 1
- 208000010392 Bone Fractures Diseases 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000005553 drilling Methods 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 230000008733 trauma Effects 0.000 description 2
- 206010061363 Skeletal injury Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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Abstract
A combined device for solving the problem of difficulty in removing a locking screw comprises a hollow sleeve, wherein a plurality of cutting edges extending along the axial direction of the hollow sleeve are arranged at the head end of the hollow sleeve in an annular array mode, a clamping part connected with an electric hand drill is arranged at the tail end of the hollow sleeve, and a limiting block is arranged in the middle of the inner cavity of the hollow sleeve; the locating lever rotates to be connected between stopper and clamping part and the locating lever head end extends to the hollow sleeve head end outside, and the clamping part head end is equipped with a rotatable friction pearl, and the locating lever middle part is equipped with the dog, and its both ends of spring housing put in the terminal outside of locating lever are inconsistent with dog and friction pearl respectively, the locating lever head end be equipped with locking coaptation board screw assorted twist the portion soon, connection on the hollow sleeve outer wall with adjustable spacing cardboard, the device can effectively solve the locking screw and demolish the problem of difficulty, practices thrift operating time, reduces bone and soft tissue thermal damage around, has avoided getting because of the trephine and has remained the screw rod, and enlarges the aperture of bone, has avoided the secondary damage of bone.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to solve locking screw and demolish combination suit of difficulty.
Background
In trauma orthopedics, fixture removal is a routine procedure, but even experienced physicians have difficulty avoiding the difficult conditions of removal, especially the insertion of locking screws that lock the bone plate. Complications resulting from difficulty in removing internal fixtures are also diverse, such as greatly prolonged surgical time, secondary, greater trauma, risk of re-fracture after bone injury, etc.
In clinic, for locking screws which are difficult to take out, a tungsten steel drill or a sharp steel drill is usually adopted to remove a screw cap, then a steel plate is dismounted, and a screw rod remained in a body is screwed out. The method that part of the locking screws are taken out by adopting the taper reverse tapping method or the method that large wire cutters cut off steel plate nail holes is more difficult to achieve.
Disclosure of Invention
The utility model aims at providing a solve locking screw and demolish combination suit of difficulty for solve the problem that exists among the background art.
A combined device for solving the problem of difficulty in removing a locking screw comprises a hollow sleeve, wherein a plurality of cutting edges extending along the axial direction of the hollow sleeve are arranged at the head end of the hollow sleeve in an annular array mode, a clamping part connected with an electric hand drill is arranged at the tail end of the hollow sleeve, and a limiting block is arranged in the middle of the inner cavity of the hollow sleeve; the locating lever rotate to be connected between stopper and clamping part and the locating lever head end extend to the hollow sleeve head end outside, the clamping part head end be equipped with a rotatable friction pearl, locating lever middle part be equipped with the dog, its both ends are inconsistent with dog and friction pearl respectively in the terminal outside of locating lever are put to the spring housing, the locating lever head end be equipped with locking coaptation board screw assorted twist the portion soon, the adjustable connection of spacing cardboard on the hollow sleeve outer wall.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
the device can be used for drilling off the peripheral metal of the screw cap at one time and can well reserve the screw cap. If the inner hexagonal or plum blossom structure in the screw cap is intact, the screw can be taken out at one time by adopting a matched wrench, and if the tail cap is smooth, the tail cap can be added by adopting a pliers to take out the screw. The device can effectively solve the problem that the locking screw is difficult to remove, saves the operation time, reduces the thermal injury of bones and surrounding soft tissues, avoids enlarging the aperture of the bones due to the residual screw rods obtained by trephine drilling, and avoids the secondary damage of the bones.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a cross-sectional view taken along line a-a of the present invention.
Fig. 3 is a partially enlarged schematic view of the present invention at B in fig. 2.
Fig. 4 is a partially enlarged schematic view of the present invention at C in fig. 2.
Fig. 5 is a perspective view of the present invention.
Fig. 6 is a perspective view of the cutting part of the present invention.
Detailed Description
Referring to fig. 1 to 6, a combination device for solving the problem of difficulty in removing a locking screw comprises a hollow sleeve 1, wherein a plurality of cutting edges 10 extending along the axial direction of the hollow sleeve 1 are annularly arrayed at the head end of the hollow sleeve 1, a clamping part 2 connected with an electric hand drill is arranged at the tail end of the hollow sleeve 1, and a limiting block 11 is arranged in the middle of an inner cavity of the hollow sleeve 1; the locating lever 3 rotate to be connected between stopper 11 and clamping part 2 and 3 head ends of locating lever extend to the outside of 1 head end of hollow sleeve, 2 head ends of clamping part be equipped with a rotatable friction pearl 20, 3 middle parts of locating lever be equipped with dog 30, its both ends of spring 12 cover setting in 3 terminal outsides of locating lever respectively with dog 30 and friction pearl 20 inconsistent, 3 head ends of locating lever be equipped with locking coaptation board screw assorted revolve twist portion 31, the adjustable connection of 1 outer wall of hollow sleeve of spacing cardboard 4.
Furthermore, the head end of the clamping part 2 is provided with a ball groove 21 for accommodating a part of the friction ball 20, and the friction ball 20 is pressed against the inside of the ball groove 21 under the action of the spring 12.
Furthermore, the limiting clamping plate 4 penetrates through the limiting clamping plate 4 through a jackscrew and then is locked on the outer wall of the hollow sleeve 1.
More specifically, the hollow sleeve 1 comprises a cutting part 5, a main body 6 and a clamping connecting rod 7, wherein the tail end of the cutting part 5 is connected to the head end of the main body 6 through a screw thread, the cutting edges 10 are annularly arrayed at the head end of the cutting part 5 along the axial direction of the cutting part 5, and the clamping connecting rod 7 is connected to the tail end of the main body 6 through a screw thread.
Furthermore, the outer wall of the main body 6 extends axially from the head end to the tail end to form a scale reference, so that the position of the limiting clamping plate 4 can be adjusted and determined conveniently.
Furthermore, the cutting part 5 and the main body 6 are both provided with clamping platforms 13 matched with the clamping grooves of the wrench, so that the wrench can be clamped and disassembled conveniently.
More specifically, the screw portion 31 has an outer hexagonal structure.
Furthermore, the cross section of the clamping connecting rod 7 is triangular.
More specifically, the cutting edge 10 is made of cemented carbide.
The utility model discloses a theory of operation and use:
when in use, the components are assembled. The clamping connecting rod 7 is inserted at the front end of the electric hand drill, the locking nut at the front end of the electric hand drill is utilized for locking, then the position of the limiting clamping plate 4 is adjusted, a proper drilling depth is selected, the screwing part 31 at the head end of the positioning rod 3 is clamped with the locking bone fracture plate screw, the electric hand drill is started, the cutting edge 10 of the cutting part 5 cuts the locking bone fracture plate, the locking screw is separated from the locking bone fracture plate, and the locking screw is smoothly taken out.
Claims (9)
1. The utility model provides a solve locking screw and demolish difficult composite set which characterized in that: comprises a hollow sleeve (1), the annular array at the head end of the hollow sleeve (1) is provided with a plurality of cutting edges (10) extending along the axial direction of the hollow sleeve (1), the tail end of the hollow sleeve (1) is provided with a clamping part (2) connected with an electric hand drill, the middle part of the inner cavity of the hollow sleeve (1) is provided with a limiting block (11), a positioning rod (3) is rotatably connected between the limiting block (11) and the clamping part (2) and the head end of the positioning rod (3) extends to the outside of the head end of the hollow sleeve (1), the head end of the clamping part (2) is provided with a rotatable friction bead (20), the middle part of the positioning rod (3) is provided with a stop block (30), a spring (12) is sleeved outside the tail end of the positioning rod (3) and the two ends of the spring are respectively abutted against the stop block (30) and the friction bead (20), the head end of, the limiting clamping plate (4) is adjustably connected to the outer wall of the hollow sleeve (1).
2. A combination to solve the problem of lock screw removal difficulty as claimed in claim 1 wherein: the head end of the clamping part (2) is provided with a ball groove (21) capable of containing part of the friction ball (20), and the friction ball (20) is propped against the inside of the ball groove (21) under the action of the spring (12).
3. A combination to solve the problem of lock screw removal difficulty as claimed in claim 1 wherein: the limiting clamping plate (4) penetrates through the limiting clamping plate (4) through a jackscrew and then is locked on the outer wall of the hollow sleeve (1).
4. A combination to solve the problem of lock screw removal difficulty as claimed in claim 1 wherein: hollow sleeve (1) include cutting portion (5), main part (6) and centre gripping connecting rod (7), cutting portion (5) terminal head end through threaded connection in main part (6), cutting edge (10) at cutting portion (5) head end along cutting portion (5) axial direction annular array, centre gripping connecting rod (7) terminal through threaded connection in main part (6).
5. A combination according to claim 4, wherein the locking screw is removed by a user, the combination comprising: the outer wall of the main body (6) axially extends from the head end to the tail end to form a scale reference.
6. A combination according to claim 4, wherein the locking screw is removed by a user, the combination comprising: cutting portion (5) and main part (6) on all be provided with spanner draw-in groove matched with joint platform (13).
7. A combination to solve the problem of lock screw removal difficulty as claimed in claim 1 wherein: the screwing part (31) is of an outer hexagonal structure.
8. A combination according to claim 4, wherein the locking screw is removed by a user, the combination comprising: the cross section of the clamping connecting rod (7) is triangular.
9. A combination to solve the problem of lock screw removal difficulty as claimed in claim 1 wherein: the cutting edge (10) is made of hard alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021639812.8U CN213098262U (en) | 2020-08-10 | 2020-08-10 | Combined device for solving problem of difficulty in dismantling locking screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021639812.8U CN213098262U (en) | 2020-08-10 | 2020-08-10 | Combined device for solving problem of difficulty in dismantling locking screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213098262U true CN213098262U (en) | 2021-05-04 |
Family
ID=75684587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021639812.8U Expired - Fee Related CN213098262U (en) | 2020-08-10 | 2020-08-10 | Combined device for solving problem of difficulty in dismantling locking screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213098262U (en) |
-
2020
- 2020-08-10 CN CN202021639812.8U patent/CN213098262U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210504 |