CN117179878B - Orthopedics nail taking device - Google Patents
Orthopedics nail taking device Download PDFInfo
- Publication number
- CN117179878B CN117179878B CN202311463434.0A CN202311463434A CN117179878B CN 117179878 B CN117179878 B CN 117179878B CN 202311463434 A CN202311463434 A CN 202311463434A CN 117179878 B CN117179878 B CN 117179878B
- Authority
- CN
- China
- Prior art keywords
- positioning
- nail
- sleeve
- nail taking
- taking rod
- 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.)
- Active
Links
- 230000000399 orthopedic effect Effects 0.000 title claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 61
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 57
- 238000001125 extrusion Methods 0.000 claims abstract description 40
- 230000000712 assembly Effects 0.000 claims abstract description 9
- 238000000429 assembly Methods 0.000 claims abstract description 9
- 238000009434 installation Methods 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 26
- 239000010959 steel Substances 0.000 claims description 26
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 11
- 239000000741 silica gel Substances 0.000 claims description 11
- 229910002027 silica gel Inorganic materials 0.000 claims description 11
- 239000012528 membrane Substances 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 7
- 238000013459 approach Methods 0.000 claims description 6
- 230000002441 reversible effect Effects 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 4
- 230000008602 contraction Effects 0.000 claims description 2
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- 230000033001 locomotion Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 241001079814 Symphyotrichum pilosum Species 0.000 description 1
- 235000004224 Typha angustifolia Nutrition 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Landscapes
- Surgical Instruments (AREA)
Abstract
The invention provides an orthopaedics nail taking device which comprises a handle, a nail taking rod and a compressing unit, wherein the handle is provided with a nail taking hole; the top end of the nail taking rod is fixedly connected with the handle; the inside of the nail taking rod is provided with an installation cavity; the compression unit comprises a knob, a driving shaft, a worm sleeve, a worm wheel, a transmission shaft, a positioning sleeve and a plurality of expansion assemblies; the driving shaft is rotatably arranged in the handle; the worm sleeve is fixedly sleeved on the driving shaft; according to the invention, the expansion assembly in the compression unit can expand and contract according to the size of the groove at the top of the hexagonal bone nail, so that the extrusion block in the expansion assembly is attached to the groove at the top of the bone nail and is compressed, the worm wheel on the transmission shaft is meshed with the worm sleeve on the driving shaft to ensure that the transmission shaft cannot rotate at will, the extrusion force applied by the extrusion block is stable, no matter the small bone nail or the large bone nail can be firmly clamped, accurate positioning and safe taking out are ensured, and greater convenience and safety are provided in the orthopedic operation.
Description
Technical Field
The invention relates to the technical field of medical appliances, in particular to a bone screw taking device for orthopaedics, wherein the head of the bone screw is provided with an inner hexagonal groove.
Background
Orthopedic surgery is a critical medical procedure for repairing and treating fractures, bone defects, and other bone related disorders. In these procedures, bone nails (bone screws or bone plate screws) are a common fixation and attachment tool used to stably attach bone parts together. However, bone nails produced by different manufacturers vary in size and gauge, and this variety presents a number of challenges: the diversity of bone nails is manifested in terms of their length, diameter, thread design, head shape, etc., and different types and sizes of bone nails are often required for different patients and different fracture types. The existing orthopedic nail removing device is often only suitable for bone nails with specific sizes, which means that a surgeon needs to continuously replace different nail removing devices in the operation, which not only increases the operation time, but also can cause operation errors. Due to the limitations of existing staple removing devices, surgeons must often deal with the problem of suitability of different bone staples, which can lead to increased complexity of the surgical procedure and even affect the success of the procedure. Wrong selections and adaptations in the procedure not only increase the procedure time, but may also lead to unnecessary injuries to the patient, such as additional damage to the fracture or failure of the procedure.
Disclosure of Invention
Aiming at the technical defects, the invention aims to provide an orthopedic nail taking device, solve the problem that the existing orthopedic nail taking device cannot be adapted to various bone nails, improve the convenience and accuracy of operation, enhance the safety of the operation and reduce the risks of patients and doctors.
In order to achieve the above purpose, the invention adopts the following technical scheme:
an orthopedic nail extraction device, comprising:
a handle for a user to hold;
the top of the nail taking rod is fixedly connected with the handle, and an installation cavity is formed in the nail taking rod;
the compressing unit is connected to the bottom of the nail taking rod; comprises a knob, a driving shaft, a worm sleeve, a worm wheel, a transmission shaft, a positioning sleeve and a plurality of expansion assemblies; the driving shaft is rotatably arranged in the handle and is fixedly connected with the knob; the worm sleeve is fixedly sleeved on the driving shaft; the transmission shaft is rotatably arranged in the mounting cavity of the nail taking rod; the upper end of the transmission shaft is rotatably arranged in the handle; the worm wheel is fixedly sleeved on the transmission shaft and meshed with the worm sleeve for transmission; the positioning sleeve is rotatably sleeved at the bottom of the transmission shaft; the expansion assemblies are distributed on the locating sleeve in a circumferential array with the axis of the locating sleeve as the center, are connected with the transmission shaft in a transmission manner, and perform expansion and contraction actions along with rotation of the transmission shaft so as to be abutted in the head groove of the bone nail.
Preferably, the expansion assembly comprises an extrusion block and a drive plate; the outer side surface of the positioning sleeve is provided with a receiving groove for accommodating the extrusion block, and the extrusion block is movably arranged in the receiving groove; a guide rod is fixedly arranged on one side, close to the positioning sleeve, of the extrusion block, a guide hole matched with the guide rod is formed in the positioning sleeve, and the guide rod is slidably arranged in the guide hole; a communication hole is arranged in the accommodating groove; the transmission plate is movably arranged in the communication hole; one end of the transmission plate is hinged with the extrusion block, the other end of the transmission plate is hinged with the transmission shaft, and the transmission shaft drives the extrusion block to move in the accommodating groove along the axial direction of the guide rod through the transmission plate when rotating; the lower part of the end face, far away from the locating sleeve, of the extrusion block is fixedly provided with a scraper.
Preferably, the device further comprises a positioning unit; the positioning unit comprises an adjusting sleeve and a plurality of positioning components; the adjusting sleeve is rotatably sleeved on the nail taking rod and is in threaded connection with the nail taking rod; an annular groove is formed in the adjusting sleeve; the positioning assemblies are distributed in a circumferential array with the axis of the nail taking rod as the center; the positioning assembly comprises a steel wire and a spring; the inside of the nail taking rod is provided with a telescopic hole for accommodating the steel wire, and the steel wire is movably arranged in the telescopic hole; a guide vertical groove communicated with the telescopic hole is formed in the outer side face of the nail taking rod, a guide column is vertically and fixedly arranged on the steel wire, the guide column is movably arranged in the guide vertical groove, and one end of the guide column extends into the annular groove; the spring is arranged in the telescopic hole; the lower end of the spring is abutted against the upper end of the steel wire; the inner side surface of the nail taking rod is provided with a positioning vertical hole communicated with the telescopic hole; the lower part of the steel wire is integrally provided with an arc-shaped elbow, and the arc-shaped elbow is bent towards the axial direction of the nail taking rod; a guide block is integrally arranged on one side, far away from the axis of the nail taking rod, of the arc-shaped elbow, and the outer side surface of the guide block gradually approaches to the axis direction of the nail taking rod from bottom to top; the telescopic hole of the nail taking rod is internally provided with a guide inclined plane matched with the guide block, when the steel wire pulls the arc-shaped elbow to move upwards, the guide block is attached to the guide inclined plane to slide, so that the lower end of the arc-shaped elbow passes through the positioning vertical hole and gradually approaches to the axis direction of the nail taking rod.
Preferably, the positioning unit further comprises a plurality of elastic films; the elastic films are arranged corresponding to the positioning components; the elastic membrane is arranged in the mounting cavity of the nail taking rod; the elastic membrane covers the positioning vertical hole and is fixedly connected with the nail taking rod.
Preferably, the expansion assembly further comprises a silica gel pad; the silica gel pad is fixed on the upper part of the outer side surface of the extrusion block; the thickness of the silica gel pad is larger than that of the scraper.
Preferably, the device also comprises a broken nail extractor; the broken nail extractor comprises a sleeve, a base and a conical head; the sleeve is fixed at the upper end of the base, and the conical head is fixed at the lower end of the base; the inner diameter of the sleeve is larger than the outer diameter of the nail taking rod; the lower part of the nail taking rod is detachably inserted into the sleeve; a plurality of positioning vertical bars are integrally arranged on the inner side surface of the sleeve; the positioning vertical strips are distributed in a circumferential array by taking the axis of the sleeve as the center; a positioning vertical groove matched with the positioning vertical bar is formed in the outer side face of the nail taking rod; the positioning vertical bar is detachably clamped in the positioning vertical groove; the outer side surface of the conical head is provided with a reverse spiral thread.
Preferably, the upper part of the handle is provided with a groove for accommodating the broken nail extractor; the groove is detachably buckled with an end cover.
Preferably, the outer side surfaces of the knob and the adjusting sleeve are provided with anti-skid patterns.
Preferably, a plurality of bearings are fixedly arranged in the mounting cavity of the nail taking rod at intervals; the transmission shaft penetrates through the bearing, and is rotatably arranged in the mounting cavity through the bearing.
Preferably, the top end of the positioning sleeve is fixedly provided with a positioning ring; a limiting ring is integrally arranged at the upper end of the outer wall of the positioning ring; the transmission shaft is provided with a positioning groove matched with the positioning ring and the limiting ring; the positioning ring and the limiting ring are rotatably arranged in the positioning groove.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the expansion assembly in the compression unit can expand and contract according to the size of the groove at the top of the hexagonal bone nail, so that the extrusion block in the expansion assembly is attached to the groove at the top of the bone nail and is compressed, the worm wheel on the transmission shaft is meshed with the worm sleeve on the driving shaft to drive, the transmission shaft is ensured not to rotate at will, the extrusion force applied by the extrusion block is stable, and the extrusion block can be firmly clamped, so that accurate positioning and safe taking out can be ensured no matter the small bone nail or the large bone nail; the locating unit can be with getting nail pole and bone nail advance connection, prevents to get the condition of nail pole and bone nail unexpected separation before the expansion assembly moves in place and appear, gets nail pole and bone nail after through the locating unit connection, and the lower terminal surface of expansion assembly's locating sleeve closely laminates on the bone nail, drives expansion assembly motion when being convenient for the transmission shaft is rotatory, prevents that the locating sleeve from following the synchronous pivoted condition of transmission shaft and taking place, provides bigger convenience and security in the orthopedic operation.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic view of the internal structure of the present invention;
FIG. 4 is a partial enlarged view at B in FIG. 3;
FIG. 5 is an enlarged view of a portion of FIG. 3 at C;
FIG. 6 is an enlarged view of a portion of FIG. 5 at E;
FIG. 7 is a partial enlarged view at D in FIG. 3;
FIG. 8 is an enlarged view of a portion of F in FIG. 7;
FIG. 9 is a schematic view of the assembly of the expansion assembly and the spacer sleeve of the present invention;
FIG. 10 is a schematic view of the connection structure of the expansion assembly and the positioning sleeve of the present invention;
FIG. 11 is a schematic view of the positioning sleeve according to the present invention;
FIG. 12 is a schematic view of an assembly of a squeeze block and a drive plate of the present invention;
FIG. 13 is a schematic view showing the connection structure of the extrusion block and the driving plate in the present invention;
FIG. 14 is a schematic view of the present invention in use;
FIG. 15 is a schematic view of the use of the staple remover of the present invention;
fig. 16 is a schematic view of the structure of the staple remover of the present invention.
Wherein:
1. a handle; 2. an adjusting sleeve; 3. taking a nail rod; 4. a knob; 5. an end cap; 6. a groove; 7. a transmission shaft; 8. a worm sleeve; 9. a driving shaft; 10. a worm wheel; 11. a spring; 12. a steel wire; 13. a guide post; 14. an annular groove; 15. a positioning sleeve; 16. extruding a block; 17. a drive plate; 18. an elastic film; 19. a guide block; 20. a guide slope; 21. a silica gel pad; 22. a communication hole; 23. a limiting ring; 24. a positioning ring; 25. a guide hole; 26. a receiving groove; 27. a scraper; 28. a guide rod; 29. a broken nail extractor; 291. a base; 292. a reverse helical thread; 293. positioning a vertical bar; 294. a sleeve.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 to 14, an orthopedic nail removing device comprises a handle 1, a nail removing rod 3 and a compressing unit; the top end of the nail taking rod 3 is fixedly connected with the handle 1; the inside of the nail taking rod 3 is provided with an installation cavity; during the nail taking operation, a user holds the nail taking device on the handle 1;
the compressing unit comprises a knob 4, a driving shaft 9, a worm sleeve 8, a worm wheel 10, a transmission shaft 7, a positioning sleeve 15 and a plurality of expansion assemblies; the driving shaft 9 is rotatably arranged in the handle 1; one end of the driving shaft 9 extends to the outside of the handle 1 and is fixedly connected with the knob 4; the worm sleeve 8 is fixedly sleeved on the driving shaft 9; the transmission shaft 7 is rotatably arranged in the mounting cavity of the nail taking rod 3, the bottom end surface of the transmission shaft 7 is positioned in the mounting cavity, and the axis of the transmission shaft 7 is coincident with the axis of the nail taking rod 3; the upper end of the transmission shaft 7 extends into the handle 1 and is rotatably arranged in the handle 1; the worm wheel 10 is fixedly sleeved on the transmission shaft 7 and is meshed with the worm sleeve 8 for transmission, the knob 4 is rotated, the worm sleeve 8 is driven to rotate by the driving shaft 9, and the transmission shaft 7 is driven to rotate by the meshed transmission of the worm sleeve 8 and the worm wheel 10; the positioning sleeve 15 is rotatably sleeved at the bottom of the transmission shaft 7; the expansion components are distributed in a circumferential array with the axis of the positioning sleeve 15 as the center; the number of the expansion components is six, and the top of the expansion components corresponds to the top recess of the inner hexagonal bone nail;
the expansion assembly comprises an extrusion block 16 and a transmission plate 17; the outer side surface of the positioning sleeve 15 is provided with a receiving groove 26 for accommodating the extrusion block 16, and the extrusion block 16 is movably arranged in the receiving groove 26; a guide rod 28 is fixedly arranged on one side, close to the positioning sleeve 15, of the extrusion block 16, a guide hole 25 matched with the guide rod 28 is formed in the positioning sleeve 15, the guide rod 28 is slidably arranged in the guide hole 25, and a plurality of guide rods 28 are arranged at intervals, so that the extrusion block 16 moves more stably relative to the positioning sleeve 15; a communication hole 22 is arranged in the accommodating groove 26; the transmission plate 17 is movably arranged in the communication hole 22; one end of the transmission plate 17 is hinged with the extrusion block 16, the other end of the transmission plate 17 is hinged with the transmission shaft 7, the transmission shaft 7 drives the extrusion block 16 to move along the axial direction of the guide rod 28 in the accommodating groove 26 when rotating, when the extrusion block 16 moves towards the direction far away from the axis of the nail taking rod 3, the extrusion blocks 16 synchronously move outwards to be in an expansion state, the extrusion block 16 after expansion is clamped with the top of the hexagon socket bone nail in a concave manner, the handle 1 is rotated by hand, the bone nail is detached, the expansion amplitude of the extrusion block 16 is controlled by the force of the finger rotating knob 4, and the hexagon socket bone nail in different models is adapted; the scraper 27 is fixedly arranged on the lower part of the end surface of the extrusion block 16, which is far away from the positioning sleeve 15, and in the use process, the scraper 27 is firstly inserted into a recess at the top of the inner hexagonal bone nail to cut the bone gamma which grows in the recess, so that the extrusion block 16 is conveniently fixedly connected with the inner hexagonal bone nail.
Further, the device also comprises a positioning unit; before the expansion component is connected with the bone nails, the positioning unit is used for butting the front end of the nail taking rod 3 with the bone nails, so that the condition that the nail taking rod 3 is separated from the bone nails due to arm vibration when the knob 4 is rotated is prevented; the positioning unit comprises an adjusting sleeve 2 and a plurality of positioning components; the adjusting sleeve 2 is rotatably sleeved on the nail taking rod 3 and is in threaded connection with the nail taking rod 3, and the position of the adjusting sleeve 2 in the axis direction of the nail taking rod 3 can be adjusted by rotating the adjusting sleeve 2; an annular groove 14 is arranged in the adjusting sleeve 2; the positioning components are distributed in a circumferential array by taking the axis of the nail taking rod 3 as the center; the positioning assembly comprises a steel wire 12 and a spring 11; the inside of the nail taking rod 3 is provided with a telescopic hole for accommodating the steel wire 12, and the steel wire 12 is movably arranged in the telescopic hole; a guide vertical groove communicated with the telescopic hole is formed in the outer side face of the nail taking rod 3, a guide column 13 is vertically and fixedly arranged on the steel wire 12, the guide column 13 is movably arranged in the guide vertical groove, and one end of the guide column 13 extends into the annular groove 14; the spring 11 is arranged in the telescopic hole; the lower end of the spring 11 is abutted against the upper end of the steel wire 12; the inner side surface of the nail taking rod 3 is provided with a positioning vertical hole communicated with the telescopic hole; the lower part of the steel wire 12 is integrally provided with an arc-shaped elbow, and the arc-shaped elbow is bent towards the axial direction of the nail taking rod 3; a guide block 19 is integrally arranged on one side of the arc-shaped elbow far away from the axis of the nail taking rod 3, and the outer side surface of the guide block 19 gradually approaches to the axis direction of the nail taking rod 3 from bottom to top; a guide inclined surface 20 matched with the guide block 19 is arranged in the telescopic hole of the nail taking rod 3, when the steel wire 12 pulls the arc-shaped elbow to move upwards, the guide block 19 is attached to the guide inclined surface 20 to slide, so that the lower end of the arc-shaped elbow passes through the positioning vertical hole and gradually approaches to the axis direction of the nail taking rod 3; when the adjusting sleeve 2 is rotated to enable the adjusting sleeve 2 to move along the axis direction of the nail taking rod 3 towards the direction close to the handle 1, the steel wire 12 is pulled to move upwards synchronously through the guide post 13 extending into the annular groove 14, the guide vertical groove limits the movement stroke of the guide post 13, when the steel wire 12 is pulled upwards, the arc-shaped elbow extends into the mounting cavity of the nail taking rod 3 and is clamped on the lower end face of the head of the bone nail through a plurality of arc-shaped elbows, the nail taking rod 3 and the bone nail are in a connected state, the lower end face of the positioning sleeve 15 is abutted against the bone nail, and the extrusion block 16 is convenient to expand outwards.
Further, the positioning unit further comprises a plurality of elastic films 18; the plurality of elastic films 18 are arranged corresponding to the plurality of positioning components; the elastic membrane 18 is arranged in the mounting cavity of the nail taking rod 3; the elastic membrane 18 covers the positioning vertical hole and is fixedly connected with the nail taking rod 3; the elastic membrane 18 is blocked on the positioning vertical hole, so that the movement of the arc-shaped elbow is not influenced, the contact area with the bone nails can be increased, the connecting and fixing effects are improved, the body fluid of a patient can be prevented from entering the telescopic hole, and the cleanness of the device is kept.
Further, the expansion assembly further comprises a silica gel pad 21; the silica gel pad 21 is fixed on the upper part of the outer side surface of the extrusion block 16; the thickness of the silica gel pad 21 is larger than that of the scraper 27, and the friction force between the silica gel pad 21 and the bone screw is increased, so that the occurrence of the slipping situation is reduced.
Further, as shown in fig. 15 and 16, the nail extractor 29 is further included; the staple remover 29 comprises a sleeve 294, a base 291, and a bit; the sleeve 294 is fixed to the upper end of the base 291, and the cone head is fixed to the lower end of the base 291; the inner diameter of the sleeve 294 is larger than the outer diameter of the screw extracting rod 3; the lower part of the nail taking rod 3 is detachably inserted in the sleeve 294; a plurality of positioning vertical bars 293 are integrally provided on the inner side surface of the sleeve 294; the positioning vertical strips 293 are distributed in a circumferential array with the axis of the sleeve 294 as the center; a positioning vertical groove matched with the positioning vertical bar 293 is arranged on the outer side surface of the nail taking rod 3; the positioning vertical bar 293 is detachably clamped in the positioning vertical groove; the outer side of the cone head is provided with a reverse spiral thread 292; when the top of the bone nail is broken, the broken nail extractor 29 is connected to the nail taking rod 3, the center of the bone nail is perforated by a drill bit, the broken nail is screwed into the bone nail by the reverse screw 292 of the conical head, and the broken nail is taken out.
Further, the upper part of the handle 1 is provided with a groove 6 for accommodating a broken nail extractor 29; the end cover 5 is detachably buckled on the groove 6, and the broken nail extractor 29 can be placed into the groove 6 of the handle 1 for storage, so that the broken nail extractor is convenient to take.
Further, anti-skidding lines are arranged on the outer side surfaces of the knob 4 and the adjusting sleeve 2, friction is increased, and skidding during rotation is prevented.
Furthermore, a plurality of bearings are fixedly arranged in the mounting cavity of the nail taking rod 3 at intervals; the transmission shaft 7 is arranged through the bearing and is rotatably arranged in the mounting cavity through the bearing.
Further, a positioning ring 24 is fixedly arranged at the top end of the positioning sleeve 15; the upper end of the outer wall of the positioning ring 24 is integrally provided with a limiting ring 23; the transmission shaft 7 is provided with a positioning groove matched with the positioning ring 24 and the limiting ring 23; the positioning ring 24 and the limiting ring 23 are rotatably arranged in the positioning groove.
When the screw taking device is used, the front end of the screw taking rod 3 is aligned with the head of a bone screw, the screw taking rod 3 is sleeved on the head of the bone screw, the handle 1 is held by one hand, the adjusting sleeve 2 is rotated by the other hand, the steel wire 12 is driven to move towards the handle 1 by the adjusting sleeve 2, a plurality of arc-shaped elbows at the bottom of the steel wire 12 clamp the head of the bone screw, then the knob 4 is rotated, the expansion assembly moves towards the direction far away from the axis of the screw taking rod 3, the extrusion block is propped against the inside of the inner hexagonal groove 6 of the head of the bone screw, then the handle 1 is rotated, the bone screw can be driven to rotate, and the bone screw is detached; when the head of the bone nail is broken or the condition of sliding wire appears, the broken nail extractor 29 is inserted at the front end of the nail taking rod 3, a small hole is drilled in the center of the bone nail by an electric drill, then the front end of the broken nail extractor 29 is inserted into the small hole to rotate, the screw thread of the broken nail extractor 29 is opposite to the fixed screw thread, and the broken nail extractor 29 is more screwed and more tightened on the bone nail to drive the bone nail to be screwed off from the bone.
Claims (7)
1. An orthopedic nail extraction device, comprising:
a handle (1) for a user to hold;
the top of the nail taking rod (3) is fixedly connected with the handle (1), and an installation cavity is formed in the nail taking rod;
the compressing unit is connected to the bottom of the nail taking rod (3); comprises a knob (4), a driving shaft (9), a worm sleeve (8), a worm wheel (10), a transmission shaft (7), a positioning sleeve (15) and a plurality of expansion assemblies; the driving shaft (9) is rotatably arranged in the handle (1) and is fixedly connected with the knob (4); the worm sleeve (8) is fixedly sleeved on the driving shaft (9); the transmission shaft (7) is rotatably arranged in the mounting cavity of the nail taking rod (3); the upper end of the transmission shaft (7) is rotatably arranged in the handle (1); the worm wheel (10) is fixedly sleeved on the transmission shaft (7) and meshed with the worm sleeve (8) for transmission; the positioning sleeve (15) is rotatably sleeved at the bottom of the transmission shaft (7); the expansion assemblies are distributed on the positioning sleeve (15) in a circumferential array with the axis of the positioning sleeve (15) as the center, are in transmission connection with the transmission shaft (7), and perform expansion and contraction actions along with the rotation of the transmission shaft (7) so as to be abutted in the head groove of the bone nail; the expansion assembly comprises an extrusion block (16) and a transmission plate (17); the outer side surface of the positioning sleeve (15) is provided with a receiving groove (26) for accommodating the extrusion block (16), and the extrusion block (16) is movably arranged in the receiving groove (26); a guide rod (28) is fixedly arranged on one side, close to the positioning sleeve (15), of the extrusion block (16), a guide hole (25) matched with the guide rod (28) is formed in the positioning sleeve (15), and the guide rod (28) is slidably arranged in the guide hole (25); a communication hole (22) is arranged in the accommodating groove (26); the transmission plate (17) is movably arranged in the communication hole (22); one end of the transmission plate (17) is hinged with the extrusion block (16), the other end of the transmission plate is hinged with the transmission shaft (7), and the transmission shaft (7) drives the extrusion block (16) to move in the accommodating groove (26) along the axial direction of the guide rod (28) through the transmission plate (17) when rotating; a scraper (27) is fixedly arranged on the lower part of the end surface of the extrusion block (16) far away from the positioning sleeve (15);
the positioning unit comprises an adjusting sleeve (2) and a plurality of positioning components; the adjusting sleeve (2) is rotatably sleeved on the nail taking rod (3) and is in threaded connection with the nail taking rod (3); an annular groove (14) is arranged in the adjusting sleeve (2); the positioning assemblies are distributed in a circumferential array by taking the axis of the nail taking rod (3) as the center; the positioning assembly comprises a steel wire (12) and a spring (11); the inside of the nail taking rod (3) is provided with a telescopic hole for accommodating the steel wire (12), and the steel wire (12) is movably arranged in the telescopic hole; a guide vertical groove communicated with the telescopic hole is formed in the outer side face of the nail taking rod (3), a guide column (13) is vertically and fixedly arranged on the steel wire (12), the guide column (13) is movably arranged in the guide vertical groove, and one end of the guide column (13) extends into the annular groove (14); the spring (11) is arranged in the telescopic hole; the lower end of the spring (11) is abutted against the upper end of the steel wire (12); the inner side surface of the nail taking rod (3) is provided with a positioning vertical hole communicated with the telescopic hole; an arc-shaped elbow is integrally arranged at the lower part of the steel wire (12), and the arc-shaped elbow is bent towards the axial direction of the nail taking rod (3); a guide block (19) is integrally arranged on one side of the arc-shaped elbow, which is far away from the axis of the nail taking rod (3), and the outer side surface of the guide block (19) gradually approaches to the axis direction of the nail taking rod (3) from bottom to top; a guide inclined plane (20) matched with the guide block (19) is arranged in the telescopic hole of the nail taking rod (3), when the steel wire (12) pulls the arc-shaped elbow to move upwards, the guide block (19) is attached to the guide inclined plane (20) to slide, so that the lower end of the arc-shaped elbow passes through the positioning vertical hole and gradually approaches to the axis direction of the nail taking rod (3);
a staple remover (29), the staple remover (29) comprising a sleeve (294), a base (291) and a bit; the sleeve (294) is fixed at the upper end of the base (291), and the conical head is fixed at the lower end of the base (291); the inner diameter of the sleeve (294) is larger than the outer diameter of the nail taking rod (3); the lower part of the nail taking rod (3) is detachably inserted into the sleeve (294); a plurality of positioning vertical bars (293) are integrally arranged on the inner side surface of the sleeve (294); the positioning vertical strips (293) are distributed in a circumferential array with the axis of the sleeve (294) as the center; a positioning vertical groove matched with the positioning vertical bar (293) is arranged on the outer side surface of the nail taking rod (3); the positioning vertical bar (293) is detachably clamped in the positioning vertical groove; the outer side of the cone head is provided with a reverse spiral thread (292).
2. An orthopaedic screw-extracting device according to claim 1, wherein the positioning unit further comprises a plurality of elastic membranes (18); a plurality of said elastic membranes (18) are arranged in correspondence of a plurality of said positioning assemblies; the elastic membrane (18) is arranged in the mounting cavity of the nail taking rod (3); the elastic membrane (18) covers the positioning vertical hole and is fixedly connected with the nail taking rod (3).
3. An orthopaedic screw-extracting device according to claim 1, wherein the expansion assembly further comprises a silica gel pad (21); the silica gel pad (21) is fixed at the upper part of the outer side surface of the extrusion block (16); the thickness of the silica gel pad (21) is larger than that of the scraper (27).
4. An orthopaedic screw extractor according to claim 1, wherein the upper part of the handle (1) is provided with a recess (6) for receiving the broken screw extractor (29); an end cover (5) is detachably buckled on the groove (6).
5. The orthopedic nail taking device according to claim 1, characterized in that the outer side surfaces of the knob (4) and the adjusting sleeve (2) are provided with anti-skid patterns.
6. An orthopedic nail extraction device according to any one of claims 1 to 5, characterized in that a plurality of bearings are fixedly arranged in the installation cavity of the nail extraction rod (3) at intervals; the transmission shaft (7) penetrates through the bearing, and is rotatably arranged in the mounting cavity through the bearing.
7. The orthopedic nail taking device according to claim 1, characterized in that a positioning ring (24) is fixedly arranged at the top end of the positioning sleeve (15); a limiting ring (23) is integrally arranged at the upper end of the outer wall of the positioning ring (24); the transmission shaft (7) is provided with a positioning groove matched with the positioning ring (24) and the limiting ring (23); the locating ring (24) and the limiting ring (23) are rotatably arranged in the locating groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311463434.0A CN117179878B (en) | 2023-11-06 | 2023-11-06 | Orthopedics nail taking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311463434.0A CN117179878B (en) | 2023-11-06 | 2023-11-06 | Orthopedics nail taking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117179878A CN117179878A (en) | 2023-12-08 |
| CN117179878B true CN117179878B (en) | 2024-01-05 |
Family
ID=88994649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311463434.0A Active CN117179878B (en) | 2023-11-06 | 2023-11-06 | Orthopedics nail taking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117179878B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106073886A (en) * | 2016-07-13 | 2016-11-09 | 苏州苏南捷迈得医疗器械有限公司 | A kind of orthopedic broken screw nail-fetching device |
| CN108771564A (en) * | 2018-06-01 | 2018-11-09 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | Nail inducting device |
| CN110200692A (en) * | 2018-12-27 | 2019-09-06 | 丽水市人民医院 | A kind of orthopaedics broken nail device for fetching nail |
| DE212018000146U1 (en) * | 2018-10-22 | 2019-09-24 | Xiaogang Zhou | A device for removing orthopedic nails |
| WO2022041967A1 (en) * | 2020-08-31 | 2022-03-03 | 苏州微创骨科医疗工具有限公司 | Nail removing device |
| CN114176754A (en) * | 2021-12-24 | 2022-03-15 | 黄海平 | Make things convenient for orthopedic surgery of centre gripping to get nail ware |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020151897A1 (en) * | 2001-03-30 | 2002-10-17 | Zirkle Lewis G. | Method and apparatus for locating and stabilizing an orthopedic implant |
-
2023
- 2023-11-06 CN CN202311463434.0A patent/CN117179878B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106073886A (en) * | 2016-07-13 | 2016-11-09 | 苏州苏南捷迈得医疗器械有限公司 | A kind of orthopedic broken screw nail-fetching device |
| CN108771564A (en) * | 2018-06-01 | 2018-11-09 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | Nail inducting device |
| DE212018000146U1 (en) * | 2018-10-22 | 2019-09-24 | Xiaogang Zhou | A device for removing orthopedic nails |
| CN110200692A (en) * | 2018-12-27 | 2019-09-06 | 丽水市人民医院 | A kind of orthopaedics broken nail device for fetching nail |
| WO2022041967A1 (en) * | 2020-08-31 | 2022-03-03 | 苏州微创骨科医疗工具有限公司 | Nail removing device |
| CN114176754A (en) * | 2021-12-24 | 2022-03-15 | 黄海平 | Make things convenient for orthopedic surgery of centre gripping to get nail ware |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117179878A (en) | 2023-12-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4314565A (en) | Biopsy and aspiration needle unit | |
| EP2833813B1 (en) | Bone screw and self-retaining driver | |
| US20070260248A1 (en) | Cannulated bone screw system and method | |
| JP6672183B2 (en) | Separable guide device for anatomical implants | |
| CN117179878B (en) | Orthopedics nail taking device | |
| CN110720974A (en) | Nail extractor for orthopedic operation | |
| CN108836422B (en) | Electric osteotomy device and working method thereof | |
| US9693807B2 (en) | Spinal compressor and distractor | |
| CN105662573B (en) | Memorial alloy encircling type clavicle bone fracture device takes out tool | |
| US7104994B1 (en) | Heating pen, tack seating device, and tap and surgical implantation methods using same | |
| CN210301189U (en) | Novel nail is got to orthopedics device | |
| CN209236354U (en) | A kind of bone pressurizing tool and bone pressurize fixed device | |
| KR102379375B1 (en) | Device for tensioning apparatus for fusion, stabilization, and/or fixation of bones | |
| CN211023059U (en) | Reset guide device | |
| CN220109829U (en) | Multifunctional screwing device for metal hollow bone screw | |
| CN220442712U (en) | Universal pliers for minimally invasive surgery | |
| CN219423093U (en) | Fixing splint for surgical nursing bone | |
| CN219782710U (en) | Medical tool | |
| CN219921195U (en) | Auxiliary traction device for fracture treatment | |
| CN215079518U (en) | Bidirectional compression screw assembly | |
| CN221180594U (en) | Orthopedic socket head cap screw pulling device | |
| RU211580U1 (en) | Bone extraction device for cannulated bicortical screws | |
| CN2221948Y (en) | Medical bone reamer | |
| CN218009931U (en) | Universal screw remove device of pedicle of vertebral arch | |
| CN114533246A (en) | Broken nail extractor for orthopedic surgery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |