CN106955146B - Miniature fixer for calcaneus fracture - Google Patents
Miniature fixer for calcaneus fracture Download PDFInfo
- Publication number
- CN106955146B CN106955146B CN201710320026.8A CN201710320026A CN106955146B CN 106955146 B CN106955146 B CN 106955146B CN 201710320026 A CN201710320026 A CN 201710320026A CN 106955146 B CN106955146 B CN 106955146B
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- China
- Prior art keywords
- hole
- locking
- miniature
- fixator
- sliding
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like for external osteosynthesis, e.g. distractors, contractors
- A61B17/64—Devices extending alongside the bones to be positioned
- A61B17/645—Devices extending alongside the bones to be positioned comprising a framework
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like for external osteosynthesis, e.g. distractors, contractors
- A61B17/64—Devices extending alongside the bones to be positioned
- A61B17/6466—Devices extending alongside the bones to be positioned with pin-clamps movable along a solid connecting rod
Abstract
A miniature fixator for calcaneus fractures comprising: the base bar is provided with a first fixing needle through hole penetrating through the left side and the right side and a first locking hole laterally communicated with the first fixing needle through hole, and a locking screw is arranged in the first locking hole; the front end of the jacking rod is hinged with the front end of the base rod; the universal adjusting head capable of adjusting the needle inserting position and the angle is arranged on the upper side of the jacking rod in a sliding mode, a second fixing needle through hole and a second locking hole which is laterally communicated with the second fixing needle through hole are formed in the universal adjusting head, and locking screws are arranged in the second locking hole. The invention has simple structure, convenient operation, flexible selection of proper needle threading position and angle during needle threading, convenience and strong torsion resistance.
Description
Technical Field
The invention relates to the field of medical supplies, in particular to a miniature fixator for calcaneus fracture.
Background
The calcaneus reduction fixator can be used for correcting calcaneus deformity and treating calcaneus fracture which are common in clinic, and is an important appliance for orthopaedics.
In use, it is necessary to select the appropriate needle threading position and angle to penetrate the fixing needle: the fixing needle is perpendicular to the diaphysis as much as possible, the nerve vessel is prevented from being damaged as much as possible, the needle is penetrated in multiple directions as much as possible, and the torsion resistance is enhanced.
The traditional calcaneus reduction fixator is complex in structure and complex in operation, and proper needle threading positions and angles cannot be flexibly selected during needle threading, so that the calcaneus reduction fixator is very inconvenient.
Disclosure of Invention
In view of the above, the present invention provides a micro-fixator for calcaneus fracture.
In order to solve the technical problems, the invention adopts the following technical scheme:
a miniature fixator for calcaneus fractures comprising:
the base bar is provided with a first fixing needle through hole penetrating through the left side and the right side and a first locking hole laterally communicated with the first fixing needle through hole, and a locking screw is arranged in the first locking hole;
the front end of the jacking rod is hinged with the front end of the base rod;
the universal adjusting head capable of adjusting the needle inserting position and the angle is arranged on the upper side of the jacking rod in a sliding mode, a second fixing needle through hole and a second locking hole which is laterally communicated with the second fixing needle through hole are formed in the universal adjusting head, and locking screws are arranged in the second locking hole.
The utility model also includes a length adjusting block, the downside of base bar has the confession the length adjusting block stretches into from the rear end to the first spout of front end, first slide rail has in the first spout, and the downside opening of this first spout is equipped with can upwards support the locking screw of length adjusting block, the front end of length adjusting block stretches into first spout, and its downside have with first slide of first slide rail sliding fit, the rear end of length adjusting block has the stalk portion, this stalk portion have link up the third fixed needle through-hole of left and right sides and follow the rear end face of stalk portion with the third locking hole of third fixed needle through-hole intercommunication, have locking screw in the third locking hole.
The front end upside of base bar has the connection piece, the front end of top bar pass through a bolt with the connection piece articulates, have on the connection piece and be used for limiting top bar turned angle's arc opening, the front end of top bar has the spacing portion of crossing the arc opening.
The upper side of the top bar is provided with a second sliding groove extending from the rear end to the front end, and a second sliding rail is arranged in the second sliding groove; the universal adjusting head comprises a second sliding seat, a first locking bolt, a rotating shaft, an adjusting head body and a second locking bolt, wherein the second sliding seat is arranged in the second sliding groove and is in sliding fit with the second sliding rail, the second sliding seat is provided with a rotating shaft seat and a third locking bolt penetrating into the second sliding groove, the cross section of the rotating shaft seat is U-shaped, a shaft hole matched with the rotating shaft is formed in the closed side of the rotating shaft seat, the two ends of the open side are provided with fourth locking holes penetrating left and right, the first locking bolt penetrates through the fourth locking holes at the two ends of the open side, the rotating shaft is rotationally fixed in the shaft hole, the second fixing needle through hole is positioned in the lateral direction of the upper portion of the adjusting head body, the lower portion of the adjusting head body is hinged with the rotating shaft through the second locking bolt, and the second locking hole is positioned at the top of the adjusting head body.
The rotating shaft comprises a shaft part and a disc-shaped part connected to the upper side of the shaft part, the shaft part is rotationally fixed in the shaft hole, two symmetrical outer convex arc surfaces and two inner concave arc surfaces adjacent to the outer convex arc surfaces are arranged in the circumferential direction of the shaft part, a first hinge hole for a second locking bolt to pass through is formed in the disc-shaped part, the lower part of the adjusting head body is n-shaped, the lower part of the adjusting head body is sleeved on the disc-shaped part, a second hinge hole corresponding to the first hinge hole is formed in the lateral direction of the adjusting head body, and the second locking bolt passes through the first hinge hole and the second hinge hole.
The base bar and the top bar are cuboid metal blocks, the length adjusting block is an L-shaped metal block, the number of the first fixing needle through holes is five, the three first fixing needle through holes are distributed at intervals along the front and back directions in a straight line, the remaining two first fixing needle through holes are distributed at intervals up and down at the front end of the base bar, the number of the first locking holes is five, the three first locking holes are located on the upper surface of the base bar, and the remaining two first locking holes are located on the front end face of the base bar.
The first sliding groove and the second sliding groove are dovetail grooves.
The limiting part is a limiting screw.
The number of the universal adjusting heads is two.
The invention has simple structure, convenient operation, flexible selection of proper needle threading position and angle during needle threading, convenience and strong torsion resistance.
Drawings
The invention is described in detail below with reference to the attached drawings and detailed description:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the base bar of the present invention;
FIG. 3 is a longitudinal cross-sectional view of the base bar of the present invention;
FIG. 4 is a schematic side view of the top bar of the present invention;
FIG. 5 is a schematic top view of the top bar of the present invention;
FIG. 6 is a schematic view of the structure of the length adjustment block of the present invention;
FIG. 7 is a schematic structural view of a second carriage according to the present invention;
fig. 8 is a longitudinal sectional view of a second carriage of the present invention;
FIG. 9 is a cross-sectional view A-A of FIG. 8;
FIG. 10 is a schematic view of a spindle according to the present invention;
FIG. 11 is a schematic view of the structure of the adjusting head body of the present invention;
fig. 12 is a longitudinal cross-sectional view of the adjustment head body of the present invention.
Detailed Description
As shown in fig. 1 to 12, a mini-type fixator for calcaneus fracture comprises a base bar 1100, a top bar 1200 and a universal adjustment head 1300 for adjusting the needle insertion position and angle.
As shown in fig. 2, the base bar 1100 is a rectangular parallelepiped metal block, on which five first fixing pin through holes 1110 penetrating the left and right sides and five first locking holes 1120 laterally communicating with the first fixing pin through holes 1110 are formed, and locking screws 1500 are provided in the first locking holes 1120.
The three first fixing pin through holes 1110 are linearly and alternately distributed along the front-rear direction, the remaining two first fixing pin through holes 1110 are vertically and alternately distributed at the front end of the base bar 1100, the three first locking holes 1120 are located on the upper surface of the base bar 1100, and the remaining two first locking holes 1120 are located on the front end face of the base bar 1100.
As shown in fig. 1 and 6, in order to expand the length of the base bar 1100, the present invention further has a length adjustment block 1400, and the length adjustment block 1400 is an L-shaped metal block.
The lower side of the base bar 1100 is provided with a first sliding groove 1130 for the length adjusting block 1400 to extend into from the rear end to the front end, a first sliding rail is arranged in the first sliding groove 1130, a locking screw 1500 is arranged at the lower side opening of the first sliding groove 1130, the locking screw 1500 can be propped against the length adjusting block 1400 upwards to adjust the position of the length adjusting block 1400 in the first sliding groove 1130, the front end of the length adjusting block 1400 extends into the first sliding groove 1130, the lower side of the length adjusting block 1400 is provided with a first sliding seat 1410 in sliding fit with the first sliding rail, the rear end of the length adjusting block 1400 is provided with a handle portion 1420, the handle portion 1420 is provided with a third fixing needle through hole 1421 penetrating through the left side and the right side and a third locking hole 1422 communicated with the third fixing needle through hole 1421 from the rear end surface of the handle portion, and the locking screw 1500 is arranged in the third locking hole 1422.
As shown in fig. 1, 4 and 5, the top bar 1200 is a rectangular parallelepiped metal block, and its front end is hinged to the front end of the base bar 1100.
Specifically, a connection piece 1140 is provided on the upper side of the front end of the base bar 1100, the front end of the top bar 1200 is hinged to the connection piece 1140 by a bolt 1210, the connection piece 1140 has an arc opening 1141 for limiting the rotation angle of the top bar 1200, and the front end of the top bar 1200 has a limiting portion 1220 passing through the arc opening 1141.
Wherein, the limit portion 1220 is a limit screw.
As shown in fig. 1, the universal adjustment head 1300 is provided in two and is slidably disposed on the upper side of the top bar 1200, and has a second fixing pin through hole 1310 and a second locking hole 1320 laterally communicating with the second fixing pin through hole 1310, and a locking screw 1500 is disposed in the second locking hole 1320.
Specifically, the upper side of the top bar 1200 has a second slide groove 1230 extending from the rear end to the front end, and the second slide groove 1230 has a second slide rail therein.
Accordingly, the universal adjustment head 1300 includes a second slider 1330, a first locking bolt 1340, a spindle 1350, an adjustment head body 1360, and a second locking bolt 1370.
The second sliding seat 1330 is disposed in the second sliding groove 1230 and is slidably matched with the second sliding rail, as shown in fig. 7-9, the second sliding seat 1330 is provided with a rotating shaft seat 1331 and a third locking bolt 1380 penetrating into the second sliding groove 1230, the third locking bolt 1380 can adjust the position of the second sliding seat 1330 on the second sliding groove 1230, the cross section of the rotating shaft seat 1331 is in a U shape, a closed side of the second sliding seat is formed with a shaft hole 1331a matched with the rotating shaft 1350, two ends of the open side are provided with fourth locking holes 1331b penetrating left and right, the first locking bolt 1340 penetrates through the fourth locking holes 1331b at two ends of the open side, the rotating shaft 1350 is rotationally fixed in the shaft hole 1331a, the second locking pin through hole 1310 is located at the lateral direction of the upper portion of the adjusting head body 1360, the lower portion of the adjusting head body 1360 is hinged with the rotating shaft 1350 through the second locking bolt 1370, the second locking hole 1320 is located at the top of the adjusting head body 1360, the adjusting head body 1360 can be rotated by loosening the first locking bolt 1340, and the second locking bolt 1370 can rotate the adjusting head body 1360.
As shown in fig. 10-12, the rotating shaft 1350 includes a shaft portion 1351 and a disk portion 1352 connected to an upper side of the shaft portion 1351, wherein the shaft portion 1351 is rotatably fixed in the shaft hole 1331a, and has two symmetrical outer arc surfaces 1351a and two inner arc surfaces 1351b adjacent to the outer arc surfaces 1351a in a circumferential direction, and the disk portion 1352 has a first hinge hole for passing the second locking bolt 1370
1352a, the lower portion of the adjustment head body 1360 is n-shaped, the lower portion of the adjustment head body 1360 is sleeved on the disc-shaped portion 1352, and has a second hinge hole 1362 corresponding to the first hinge hole 1352a in a lateral direction, and the second locking bolt 1370 passes through the first hinge hole 1352a and the second hinge hole 1362.
The first chute 1130 and the second chute 1230 of the present invention are dovetail grooves.
The invention has simple structure and convenient operation, when in use, the fixing needle is inserted into the first fixing needle through hole 1110, the position of the length adjusting block 1400 is adjusted according to the requirement of the threading needle, the fixing needle is penetrated into the third fixing needle through hole 1421 of the length adjusting block 1400, the top bar 1200 is rotated, the position of the universal adjusting head 1300 on the top bar 1200 is adjusted, the universal adjusting head 1300 is rotated, the fixing needle is penetrated into calcaneus at a proper position and angle through the second fixing needle through hole 1310, and the fixing needle is locked through the corresponding locking screw 1500 after penetrating into the calcaneus, so that the proper threading needle position and angle can be flexibly selected, and the invention is very convenient and has strong torsion resistance.
However, it will be appreciated by persons skilled in the art that the above embodiments are provided for illustration of the invention and not for limitation thereof, and that changes and modifications to the above described embodiments are intended to fall within the scope of the appended claims as long as they fall within the true spirit of the invention.
Claims (8)
1. A miniature fixator for calcaneus fractures comprising:
the base bar is provided with a first fixing needle through hole penetrating through the left side and the right side and a first locking hole laterally communicated with the first fixing needle through hole, and a locking screw is arranged in the first locking hole;
the front end of the jacking rod is hinged with the front end of the base rod, wherein the base rod and the jacking rod are both cuboid metal blocks;
the universal adjusting head capable of adjusting the needle inserting position and the angle is arranged on the upper side of the jacking rod in a sliding mode, a second fixing needle through hole and a second locking hole which is laterally communicated with the second fixing needle through hole are formed in the universal adjusting head, and locking screws are arranged in the second locking hole.
2. The miniature fixator for calcaneus fracture according to claim 1, further comprising a length adjusting block, wherein the lower side of the base bar is provided with a first sliding groove for the length adjusting block to extend from the rear end to the front end, a first sliding rail is arranged in the first sliding groove, a locking screw capable of pushing up against the length adjusting block is arranged at the lower opening of the first sliding groove, the length adjusting block is an L-shaped metal block, the front end of the length adjusting block extends into the first sliding groove, a first sliding seat in sliding fit with the first sliding rail is arranged at the lower side of the length adjusting block, the rear end of the length adjusting block is provided with a handle part, the handle part is provided with a third fixing needle through hole penetrating through the left side and the right side, a third locking hole communicated with the third fixing needle through hole from the rear end face of the handle part, and the locking screw is arranged in the third locking hole.
3. The miniature fixator for calcaneus fracture according to claim 2, wherein the upper side of the front end of the base bar is provided with a connecting sheet, the front end of the top bar is hinged with the connecting sheet through a bolt, the connecting sheet is provided with an arc opening for limiting the rotation angle of the top bar, and the front end of the top bar is provided with a limiting part penetrating through the arc opening.
4. A miniature fixator for calcaneus fracture according to claim 3 wherein the upper side of the top bar has a second runner extending from the rear end to the front end, the second runner having a second slide rail therein; the universal adjusting head comprises a second sliding seat, a first locking bolt, a rotating shaft, an adjusting head body and a second locking bolt, wherein the second sliding seat is arranged in the second sliding groove and is in sliding fit with the second sliding rail, the second sliding seat is provided with a rotating shaft seat and a third locking bolt penetrating into the second sliding groove, the cross section of the rotating shaft seat is U-shaped, a shaft hole matched with the rotating shaft is formed in the closed side of the rotating shaft seat, the two ends of the open side are provided with fourth locking holes penetrating left and right, the first locking bolt penetrates through the fourth locking holes at the two ends of the open side, the rotating shaft is rotationally fixed in the shaft hole, the second fixing needle through hole is positioned in the lateral direction of the upper portion of the adjusting head body, the lower portion of the adjusting head body is hinged with the rotating shaft through the second locking bolt, and the second locking hole is positioned at the top of the adjusting head body.
5. The miniature fixator for calcaneus fracture according to claim 4, wherein the rotating shaft comprises a shaft portion and a disc-shaped portion connected to the upper side of the shaft portion, the shaft portion is rotationally fixed in the shaft hole, two symmetrical outer convex arc surfaces and two inner concave arc surfaces adjacent to the outer convex arc surfaces are circumferentially arranged on the shaft portion, a first hinge hole for the second locking bolt to pass through is formed in the disc-shaped portion, the lower portion of the adjusting head body is n-shaped, the lower portion of the adjusting head body is sleeved on the disc-shaped portion, a second hinge hole corresponding to the first hinge hole is formed in the lateral direction of the adjusting head body, and the second locking bolt passes through the first hinge hole and the second hinge hole.
6. The miniature fixator for calcaneus fracture of claim 5 wherein the first runner and the second runner are dovetail grooves.
7. The miniature fixator for calcaneus fracture of claim 6 wherein the stop is a stop screw.
8. The miniature fixator for calcaneus fracture of claim 7 wherein the universal adjustment head is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710320026.8A CN106955146B (en) | 2017-05-09 | 2017-05-09 | Miniature fixer for calcaneus fracture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710320026.8A CN106955146B (en) | 2017-05-09 | 2017-05-09 | Miniature fixer for calcaneus fracture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106955146A CN106955146A (en) | 2017-07-18 |
| CN106955146B true CN106955146B (en) | 2023-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710320026.8A Active CN106955146B (en) | 2017-05-09 | 2017-05-09 | Miniature fixer for calcaneus fracture |
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| CN (1) | CN106955146B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202604981U (en) * | 2012-05-30 | 2012-12-19 | 上海市奉贤区中心医院 | Frame type external fixation device |
| CN204016450U (en) * | 2014-07-17 | 2014-12-17 | 皖南医学院弋矶山医院 | A kind of calcaneus reset dilator |
| CN104622553A (en) * | 2015-03-02 | 2015-05-20 | 上海市奉贤区中心医院 | Calcaneal reduction fixing stent |
| CN204734533U (en) * | 2015-06-03 | 2015-11-04 | 宜昌市夷陵医院 | A interim fixer for assisting shin bone fracture closed reduction |
| CN205339091U (en) * | 2016-01-04 | 2016-06-29 | 海城市正骨医院 | Ankle joint external fixation of fracture frame |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011072249A1 (en) * | 2009-12-11 | 2011-06-16 | Small Bone Innovations, Inc. | Ankle fusion device, instrumentation and methods |
| US9421103B2 (en) * | 2012-04-05 | 2016-08-23 | Orthohelix Surgical Designs, Inc. | Lateral ankle fusion plate system and jig, and method for use therewith |
-
2017
- 2017-05-09 CN CN201710320026.8A patent/CN106955146B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202604981U (en) * | 2012-05-30 | 2012-12-19 | 上海市奉贤区中心医院 | Frame type external fixation device |
| CN204016450U (en) * | 2014-07-17 | 2014-12-17 | 皖南医学院弋矶山医院 | A kind of calcaneus reset dilator |
| CN104622553A (en) * | 2015-03-02 | 2015-05-20 | 上海市奉贤区中心医院 | Calcaneal reduction fixing stent |
| CN204734533U (en) * | 2015-06-03 | 2015-11-04 | 宜昌市夷陵医院 | A interim fixer for assisting shin bone fracture closed reduction |
| CN205339091U (en) * | 2016-01-04 | 2016-06-29 | 海城市正骨医院 | Ankle joint external fixation of fracture frame |
Non-Patent Citations (1)
| Title |
|---|
| 动力外固定器加有限内固定治疗Pilon骨折;张秋林,王秋根,纪方,王万宗,汤旭日,唐昊,吴剑宏,陆晴友,张春才,禹宝庆,许硕贵;中华创伤骨科杂志(第02期);全文 * |
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| CN106955146A (en) | 2017-07-18 |
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