CN109674505B - Medical bone drill convenient to clean steel wire soft spring - Google Patents
Medical bone drill convenient to clean steel wire soft spring Download PDFInfo
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- CN109674505B CN109674505B CN201910117490.6A CN201910117490A CN109674505B CN 109674505 B CN109674505 B CN 109674505B CN 201910117490 A CN201910117490 A CN 201910117490A CN 109674505 B CN109674505 B CN 109674505B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 84
- 239000010959 steel Substances 0.000 title claims abstract description 84
- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 56
- 238000004140 cleaning Methods 0.000 claims abstract description 23
- 238000005520 cutting process Methods 0.000 claims description 30
- 230000007704 transition Effects 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 3
- 239000010813 municipal solid waste Substances 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 description 48
- 230000001105 regulatory effect Effects 0.000 description 9
- 238000005452 bending Methods 0.000 description 4
- 239000012634 fragment Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 208000012260 Accidental injury Diseases 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 238000006748 scratching Methods 0.000 description 2
- 230000002393 scratching effect Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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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
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1613—Component parts
- A61B17/1615—Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Medical Informatics (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
- Prostheses (AREA)
Abstract
The invention discloses a medical bone drill convenient for cleaning a steel wire soft spring, which comprises a quick connector, a steel wire soft spring, a soft spring sleeve, a connector and a drill bit, wherein the quick connector sequentially comprises a connector ejector rod, an assembly rod and a connector bottom rod from top to bottom, the connector comprises an upper connector and a lower connector, the drill bit comprises a drill rod, a drill body and a drill tip, one end of the steel wire soft spring is connected with the connector bottom rod through the soft spring sleeve, the other end of the steel wire soft spring is connected with the upper connector through the soft spring sleeve, and the lower connector is connected with the drill rod. According to the invention, through the arrangement of the steel wire soft spring and the soft spring sleeve, the two ends of the steel wire soft spring are not easy to enter the trash, so that the steel wire soft spring is convenient to clean; the angle between the wire spring and the drill bit is controlled, so that the bone drill can drill holes in narrow places or places with limited space.
Description
Technical Field
The invention relates to the field of orthopedic medical instruments, in particular to a medical bone drill convenient for cleaning a steel wire soft spring.
Background
In surgery, a physician often needs to drill holes in the human bone, and the physician typically drives the bone drill via a power device to drill holes. The existing bone drill cannot change the drilling direction, or when the space is narrow or limited, the drilling operation is not easy to perform; in addition, in the drill hole, the miscellaneous scraps such as bone scraps enter the bone drill, and the cleaning is difficult
Accordingly, the applicant has proposed a bone drill that is capable of drilling holes in a limited space and is easy to clean inside.
Disclosure of Invention
The invention aims to provide a medical bone drill convenient for cleaning a steel wire soft spring, which solves the problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a medical bone drill convenient to clean steel wire soft spring, this medical bone drill includes quick-operation joint, steel wire soft spring, soft spring cover, connector and drill bit, and quick-operation joint from the top down includes joint ejector pin, assembly pole and joint sill bar in proper order, and the connector includes connector and lower connector, and the drill bit includes drilling rod, bore body and drill point, and one end of steel wire soft spring is connected with the joint sill bar through soft spring cover, and the other end is connected with last connector through soft spring cover, and lower connector is connected with the drilling rod.
In the technical scheme, the quick connector is used for being connected with an external power device, the steel wire soft spring is used for adjusting the drilling direction of the drill bit, the drill bit can also drill holes in a narrow space by bending the steel wire soft spring, the soft spring sleeve not only enables connection between the two ends of the steel wire soft spring and other parts to be more convenient, but also can protect the two ends of the steel wire soft spring, so that sundries cannot easily enter the two ends of the steel wire soft spring, the connector is used for connecting the steel wire soft spring with the drill bit, and the steel wire soft spring can be bent by controlling the connector; the drill bit is used for drilling a bone of a patient.
The shape of the joint ejector rod is cylindrical, the assembly rod comprises an upper assembly block and a lower assembly block, the upper assembly block and the lower assembly block have the same structure, the upper assembly block comprises a first plane and a first arc convex surface, the first plane and the first arc convex surface are staggered to form the upper assembly block, the circle center of the first arc convex surface points to the inner part of the upper assembly block, a transition rod is arranged between the upper assembly block and the lower assembly block, the side surface of the transition rod is an arc concave surface, the circle center of the arc concave surface points to the outer part of the transition rod, the joint bottom rod is quadrangular, the joint bottom rod comprises a second plane and a second arc convex surface, the second plane and the second arc convex surface are staggered to form the joint ejector rod, the circle center of the second arc convex surface points to the inner part of the joint bottom rod, the width of the second plane is larger than the width of the first plane, the radius of the second arc convex surface is larger than the radius of the first arc convex surface, a connecting cavity is arranged in the inner part of the joint bottom rod, the upper end of the connecting cavity is a triangular cone cavity, and the lower end of the connecting cavity is a cylindrical cavity; the connector is the connector of protruding font, and the connector includes connector and lower connector, goes up connector and the inside first cavity and the second cavity that set up respectively of connector down, first cavity and second cavity intercommunication, and first cavity and second cavity are cylindric, and soft spring cover is inside hollow cylinder, all is provided with soft spring cover in cylindrical cavity and the first cavity, and the both ends of steel wire soft spring are connected with cylindrical cavity, soft spring cover in the first cavity respectively.
In the technical scheme, in the use process, the assembly rod is used for being assembled with an external power device, and the joint ejector rod, the upper assembly block, the transition body and the lower assembly block are matched for use, so that the bone drill is more firmly connected with the external power device, and the first plane, the first arc convex surface and the first arc concave surface are arranged to play a limiting role with the external power device, so that the bone drill is prevented from falling from the external power device; the arrangement of the first plane and the second plane is convenient for the power device or the hand to clamp, the upper assembly block and the lower assembly block are both in a hexagonal prism shape, the joint bottom rod is in a quadrangular prism shape, the width of the second plane is larger than that of the first plane, and the radius of the second circular-arc convex surface is larger than that of the first circular-arc convex surface, so that the assembly rod and the joint bottom rod can be distinguished, and the quick joint can be just connected with an external power device; the arrangement of the triangular cavity can save the internal raw materials, thereby saving the production cost of the bone drill, the cylindrical cavity and the first cavity are used for accommodating and connecting the soft spring sleeve and one end of the steel wire soft spring, and the positions of the steel wire soft spring are fixed through the cylindrical cavity and the first cavity; the both ends of steel wire soft spring are fixed in cylindrical cavity, are difficult to wash, set up the soft spring cover at the both ends of steel wire soft spring, prevent other miscellaneous bits to get into the both ends of steel wire soft spring, the washing of steel wire soft spring of being convenient for more.
As the preferred scheme, the drill bit is rectangular form integrated into one piece structure, and the upper end setting of drilling rod is in the lower connector, and the drilling rod is the smooth cylinder body of surface, is provided with the chip groove that the spiral descends more than two on the drilling body, and the chip groove extends to the position of drill point from the top of drilling rod, and the shape of drill point is triangle taper.
In the technical scheme, the drill bit is of an integrated long-strip-shaped structure, so that the drill bit is not required to be assembled, can be used quickly and conveniently, and can drill deeper holes in a long strip shape; when the drilling hole is deeper, if the surface of the drilling hole is rough, the resistance of the drilling point for drilling is increased, and the drilling rod is smooth in surface, so that the drilling speed can be increased; the chip removal groove is used for discharging bone fragments drilled by the drill point, so that the bone fragments are prevented from accumulating on the drill point, and the drilling speed and efficiency of the drill point are influenced; the triangular-cone drill tip is easier to drill than a flat drill tip.
As the preferable scheme, the steel wire soft spring comprises an upper end part, an adjusting part, a soft spring part and a lower end part, wherein the upper end part and the lower end part are solid, a cavity is formed in the adjusting part and the soft spring part, a chute is formed in the adjusting part, a limiting pipe is arranged in the adjusting part, a protruding bolt is arranged on the limiting rod, the protruding bolt is positioned in the chute, and a limiting nut is arranged on the protruding bolt.
In the technical scheme, the steel wire soft spring is divided into four parts, the upper end part and the lower end part are respectively connected with the soft spring sleeve and used for guaranteeing the stability of the steel wire soft spring, the regulating part is internally provided with the limiting pipe, the limiting pipe can move in the regulating part and the cavity in the soft spring part by enabling the convex bolt to move in the sliding groove, when the soft spring part is needed to be used, namely, the angle between the steel wire soft spring and the drill bit is needed to be regulated, the convex bolt moves in the direction of the upper end part, the limiting pipe is located in the regulating part, the position of the limiting pipe is fixed by the limiting nut, and at the moment, the soft spring part can be bent to regulate the direction of drilling; when the soft spring part is not needed to be used, namely, the steel wire soft spring and the drill bit are kept horizontal, the protruding bolt moves towards the direction of the soft spring part, so that the limiting pipe is positioned on the soft spring part, and the limiting pipe is fixed by the limiting nut, at the moment, the soft spring part cannot be bent, when the drilling of bones is required to be carried out vertically, if the limiting pipe is not arranged in the soft spring part, the force applied by a driller is uneven, the soft spring part is likely to be bent, so that the direction of drilling of the drill bit is deviated, and if the limiting pipe is arranged, even if the force applied by the driller is uneven, the soft spring part cannot be bent due to the limitation of the limiting pipe, so that the drilling of the drill bit is more accurate.
As the preferable scheme, be provided with first turn-ups on the outer wall of soft spring cover one end, first turn-ups include first turn-ups inclined plane, and the contained angle of first turn-ups inclined plane and soft spring cover outer wall is 30 degrees.
In the above technical scheme, the first flanging is not only used for preventing the user from being scratched, but also plays the roles of positioning and limiting, when the first flanging just contacts with the outer wall of the cylindrical cavity and the outer wall of the first cavity, the fact that the soft spring sleeve and the steel wire soft spring are just perfectly matched with the cylindrical cavity and the first cavity at the moment is indicated, otherwise, the condition that the cylindrical cavity and the first cavity are not filled with the soft spring sleeve and the steel wire soft spring easily occurs, and meanwhile, when the first pin at the back is inserted into the first pin hole, the first pin hole is not required to be aligned one by one.
As the preferred scheme, the diameter of first cavity is greater than the diameter of second cavity, is provided with the second turn-ups on the outer wall of last connector and lower connector junction, and the second turn-ups includes the second turn-ups inclined plane, and the external diameter of second turn-ups equals the external diameter of last connector, and the contained angle of second turn-ups inclined plane and lower connector outer wall is 135 degrees.
In the above technical solution, the first cavity is used for connecting with the wire spring and the spring sleeve, the wire spring adjusts the drilling direction of the drill bit by bending itself, because the width of the wire spring is wider and is not easy to bend and break, the second cavity is used for connecting with the drill bit, for the patient, the smaller the hole diameter of the drill bit drilled is, the less the body is, so the width of the drill hole is smaller, and therefore the diameter of the first cavity is larger than the diameter of the second cavity; the right angle is easier to scratch than the obtuse angle, and the second flanging is arranged, so that the connection position of the upper connector and the lower connector is changed from the right angle to the obtuse angle, and the scratching probability of a user is reduced; the outer diameter of the second flanging is equal to the outer diameter of the upper connector, so that the surface of the device is smoother, the touch feeling is more comfortable during use, and the device is not tired after long-time use; the contained angle of second turn-ups inclined plane and lower connector outer wall is 135 degrees, and this angle not only makes the junction transition of going up connector and lower connector more mild, also can not increase too many materials in this department simultaneously for manufacturing cost can not take place too much change.
Preferably, the drill tip comprises a first cutting edge and a second cutting edge, the first cutting edge and the second cutting edge forming an included angle of 90-118 degrees.
In the technical scheme, the drill bit perforates the bone of a patient through the first cutting edge and the second cutting edge, if the angle between the first cutting edge and the second cutting edge is relatively large, the drill point is relatively blunt, the drilling speed is low, the operation time is prolonged, and the life health safety of the patient is not facilitated; if the angle between the first cutting edge and the second cutting edge is smaller, the drill point is sharper, the drilling speed is too high, the drilling is easy to be overturned, accidental injury is easily caused to a patient, and meanwhile, the drill point is more easy to wear after being overturned, so that the device sets the included angle between the first cutting edge and the second cutting edge to be 90-118 degrees.
Preferably, gaskets are arranged between the cylindrical cavity and the triangular conical cavity and between the first cavity and the second cavity.
In the technical scheme, the gasket between the cylindrical cavity and the triangular conical cavity is used for preventing the steel wire soft spring from displacing relative to the soft spring sleeve, preventing the steel wire soft spring from entering the triangular conical cavity, and simultaneously providing supporting force for the steel wire soft spring by the gasket, so that the position of one end of the steel wire soft spring is fixed, the steel wire soft spring can work better, the gasket also prevents the soft spring sleeve from collision friction with the inner wall of the triangular conical cavity, prevents the soft spring sleeve from wearing, and shortens the service life of the soft spring sleeve; the gasket between the first cavity and the second cavity is used for preventing collision and abrasion between the drill bit and the steel wire soft spring, so that the drill bit is prevented from having high reverse acting force when drilling holes on bones, the drill bit has upward acting force on the steel wire soft spring, and the steel wire soft spring is displaced relative to the soft spring sleeve, so that the working effect of the device is influenced; meanwhile, the upper end of the drill rod is D-shaped, so that the drill rod can be conveniently fixed.
As a preferable scheme, the upper end part, the lower end part, the soft spring sleeve, the joint bottom rod and the upper connecting head are respectively provided with corresponding first pin holes, and first pins are arranged in the first pin holes; the drill rod is provided with a pin groove, the lower connecting head is provided with a second pin hole, the pin groove corresponds to the second pin hole, and a second pin is arranged in the pin groove and the second pin hole.
In the technical scheme, the upper end part and the lower end part of the first pin are respectively connected and fixed with the joint bottom rod and the upper connector, so that the steel wire soft spring is prevented from rotating relative to the joint bottom rod and the upper connector, the connection firmness and stability between the steel wire soft spring and the upper connector are further ensured, and the device can work more stably; the second pin is used for fixing the position of the drilling hole and preventing the drilling hole from falling from the lower connector, and the drill bit is convenient and quick to replace due to the arrangement of the second pin; the first pin and the second pin are connected and fixed, so that each part is also convenient to clean.
As the preferable scheme, the upper end of the joint ejector rod is provided with a chamfer, and one end, far away from the first flanging, of the steel wire soft spring and the soft spring sleeve is welded.
In the technical scheme, the chamfer not only enables the device to be assembled with an external power device more easily, but also prevents a user from being scratched during assembly; the welding of the steel wire soft spring and the soft spring sleeve not only ensures that the connection between the steel wire soft spring and the soft spring sleeve is firmer, but also forms a whole, thereby being convenient to connect with the cylindrical cavity and the first cavity.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, through the arrangement of the steel wire soft spring and the soft spring sleeve, the two ends of the steel wire soft spring are not easy to enter the trash, so that the steel wire soft spring is convenient to clean.
2. By controlling the angle between the wire spring and the drill bit, the present invention enables a doctor to more easily drill holes using the bone drill in a narrow place or a place where space is limited.
Drawings
FIG. 1 is a schematic view of a medical bone drill for facilitating cleaning of a wire spring according to the present invention;
FIG. 2 is a schematic view of a quick connector of a medical bone drill for facilitating cleaning of a wire spring according to the present invention;
FIG. 3 is a schematic view showing a structure of a soft sleeve of a medical bone drill for facilitating cleaning of a wire soft spring according to the present invention;
FIG. 4 is a schematic view showing a structure of a joint of a medical bone drill for facilitating cleaning of a wire-rope soft spring according to the present invention;
FIG. 5 is a schematic view showing the structure of a drill bit of a medical bone drill for facilitating cleaning of a wire spring according to the present invention;
FIG. 6 is a schematic view showing a structure of a wire rope spring of a medical bone drill for cleaning the wire rope spring according to the present invention
FIG. 7 is an enlarged schematic view of the structure of the medical bone drill of FIG. 1A for facilitating cleaning of the wire spring according to the present invention;
FIG. 8 is an enlarged view showing the structure of the medical bone drill at B in FIG. 1, which is convenient for cleaning the wire spring according to the present invention;
FIG. 9 is an enlarged schematic view showing the structure of the medical bone drill at C in FIG. 1 for cleaning a wire spring according to the present invention
FIG. 10 is a cross-sectional view of the medical bone drill of FIG. 2 at D-D for facilitating cleaning of wire springs in accordance with the present invention
Fig. 11 is a cross-sectional view of the medical bone drill of fig. 2 at E-E to facilitate cleaning of the wire spring of the present invention.
In the figure: 1-joint ejector pin, 2-upper assembly block, 3-lower assembly block, 4-transition rod, 5-joint bottom rod, 6-first pin, 7-soft spring sleeve, 8-wire soft spring, 9-connector, 10-drill bit, 11-spacer, 12-second pin, 13-triangular pyramid cavity, 14-cylindrical cavity, 15-upper connector, 16-lower connector, 17-first flange, 18-drill rod, 19-drill body, 20-drill tip, 21-first main cutting edge, 22-second main cutting edge, 23-junk slot, 24-first plane, 25-first circular convex surface, 26-second plane, 27-second circular convex surface, 28-second flange, 29-upper end, 30-adjusting part, 31-soft spring part, 32-lower end, 33-limit nut, 34-limit tube, 35-bump bolt.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 11, in an embodiment of the present invention, a medical bone drill for cleaning a steel wire soft spring is provided, the medical bone drill includes a quick connector, a steel wire soft spring 8, a soft spring sleeve 7, a connector 9 and a drill bit 10, wherein the quick connector sequentially includes a connector ejector rod 1, an assembly rod and a connector bottom rod 5 from top to bottom, the connector 9 includes an upper connector 15 and a lower connector 16, the drill bit 10 includes a drill rod 18, a drill body 19 and a drill tip 20, one end of the steel wire soft spring 8 is connected with the connector bottom rod 5 through the soft spring sleeve 7, the other end is connected with the upper connector 15 through the soft spring sleeve 7, and the lower connector 16 is connected with the drill rod 18.
In the above technical scheme, the quick connector is used for being connected with an external power device, the steel wire soft spring 8 is used for adjusting the drilling direction of the drill bit 10, the drill bit 10 can also drill holes more easily in a limited space by bending the steel wire soft spring 8, the soft spring sleeve 7 not only enables the connection between the two ends of the steel wire soft spring 8 and other parts to be more convenient, but also can protect the two ends of the steel wire soft spring 8, so that sundries cannot easily enter the two ends of the steel wire soft spring 8, the connector 9 is used for connecting the steel wire soft spring 8 and the drill bit 10, and the steel wire soft spring 8 can be bent by controlling the connector 9; the drill bit 10 is used to drill a bone of a patient.
The connector ejector rod 1 is cylindrical in shape, the assembly rod comprises an upper assembly block 2 and a lower assembly block 3, the upper assembly block 2 and the lower assembly block 3 are identical in structure, the upper assembly block 2 comprises a first plane 24 and a first arc convex surface 25, the first plane 24 and the first arc convex surface 25 are staggered to form the upper assembly block 2, the circle center of the first arc convex surface 25 points to the inside of the upper assembly block 2, a transition rod 4 is arranged between the upper assembly block 2 and the lower assembly block 3, the side surface of the transition rod 4 is an arc concave surface, the circle center of the arc concave surface points to the outside of the transition rod 4, the connector bottom rod 5 is of a quadrangular shape, the connector bottom rod 5 comprises a second plane 26 and a second arc convex surface 27, the second plane 26 and the second arc convex surface 27 are staggered to form the connector ejector rod 1, the circle center of the second arc convex surface 27 points to the inside of the connector bottom rod 5, the width of the second plane 26 is larger than the width of the first plane 24, the radius of the second arc convex surface 27 is larger than the radius of the first arc convex surface 25, the inside of the connector bottom rod 5 is provided with a connecting cavity, the connecting cavity is a conical cavity 13, and the connecting cavity is a cylindrical cavity 13; the connector 9 is the connector of protruding font, and connector 9 includes connector 15 and lower connector 16, goes up connector 15 and the inside first cavity and the second cavity that set up respectively of connector 16 down, and first cavity and second cavity intercommunication are cylindric, and soft spring cover 7 is inside hollow cylinder, all is provided with soft spring cover 7 in cylindrical cavity 14 and the first cavity, and the both ends of wire soft spring 8 are connected with cylindrical cavity 14, soft spring cover 7 in the first cavity respectively.
In the above technical scheme, in the use process, the assembly rod is used for being assembled with an external power device, and the joint ejector rod 1, the upper assembly block 2, the transition body and the lower assembly block 3 are matched for use, so that the bone drill is more firmly connected with the external power device, and the first plane 24, the first arc convex surface 25 and the arc concave surface are all arranged to play a limiting role with the external power device, so that the bone drill is prevented from falling from the external power device; the arrangement of the first plane 24 and the second plane 26 is convenient for the power device or the hand to clamp, the upper assembly block 2 and the lower assembly block 3 are both in a hexagonal prism shape, the joint bottom rod 5 is in a quadrangular prism shape, the width of the second plane 26 is larger than that of the first plane 24, and the radius of the second circular-arc convex surface 27 is larger than that of the first circular-arc convex surface 25, so that the assembly rod and the joint bottom rod 5 can be distinguished, and the quick joint can be just connected with an external power device; the arrangement of the triangular cavity can save the internal raw materials, thereby saving the production cost of the bone drill, the cylindrical cavity 14 and the first cavity are used for accommodating and connecting the soft spring sleeve 7 and one end of the steel wire soft spring 8, and the positions of the steel wire soft spring 8 are fixed through the cylindrical cavity 14 and the first cavity; the both ends of wire rope spring 8 are fixed in cylindrical cavity 14, are difficult to wash, set up soft spring cover 7 at the both ends of wire rope spring 8, prevent other miscellaneous bits to get into the both ends of wire rope spring 8, the washing of wire rope spring 8 of being convenient for more.
The drill bit 10 is of an integrated structure in a long strip shape, the upper end of a drill rod 18 is arranged in the lower connector 16, the drill rod 18 is a cylindrical rod body with a smooth surface, more than two chip grooves 23 which descend spirally are arranged on the drill body 19, the chip grooves 23 extend from the top end of the drill rod 18 to the position of a drill tip 20, and the drill tip 20 is in a triangular cone shape.
In the above technical solution, the drill bit 10 is an integrally formed long strip structure, which is not only assembled and can be used quickly and conveniently, but also can drill relatively deep holes; when the drilling is deeper, if the drilling surface is rough, the resistance of the drill tip 20 to drilling is increased, and the drill rod 18 is smooth in surface, so that the drilling speed can be increased; the junk slots 23 are used for discharging bone fragments drilled by the drill tip 20, preventing the bone fragments from accumulating on the drill tip 20 and affecting the drilling speed and efficiency of the drill tip 20; the triangular-cone-shaped drill tip 20 is easier to drill than a flat drill tip 20.
The soft wire spring 8 comprises an upper end 29, an adjusting part 30, a soft spring part 31 and a lower end 32, wherein the upper end 29 and the lower end 32 are solid, cavities are formed in the adjusting part 30 and the soft spring part 31, a sliding groove is formed in the adjusting part 30, a limiting pipe 34 is arranged in the adjusting part 30, a protruding bolt 35 is arranged on the limiting pipe 34, the protruding bolt 35 is located in the sliding groove, and a limiting nut 33 is arranged on the protruding bolt 35.
In the above technical solution, the wire soft spring 8 is divided into four parts, the upper end 29 and the lower end 32 are respectively connected with the soft spring sleeve, so as to ensure the stability of the wire soft spring 8, the regulating part 30 is internally provided with the limiting tube 34, the limiting tube 34 can move in the cavities of the regulating part 30 and the soft spring part 31 by allowing the protruding bolt 35 to move in the sliding groove, when the soft spring part 31 is required to be used, namely, the angle between the wire soft spring 8 and the drill bit 10 is required to be regulated, the protruding bolt 35 moves towards the upper end 29, so that the limiting tube 34 is positioned in the regulating part 30, and the position of the limiting tube 34 is fixed by the limiting nut 33, at this time, the soft spring part 31 can be bent, and the direction of drilling is regulated; when the soft spring portion 31 is not required to be used, that is, the space between the wire soft spring 8 and the drill bit 10 is kept horizontal, the protruding bolt 35 is moved towards the soft spring portion 31, so that the limiting tube 34 is located on the soft spring portion 31, and the limiting nut 33 is used for fixing the position of the limiting tube 34, at this time, the soft spring portion 31 cannot be bent, when the bone drilling is to be performed vertically, if the limiting tube 34 is not located in the soft spring portion 31, the driller cannot apply force uniformly, the soft spring portion 31 can bend, so that the drilling direction of the drill bit 10 is deviated, and if the limiting tube 34 is located, even if the driller does not apply force uniformly, the soft spring portion 31 cannot bend due to the limitation of the limiting tube 34, so that the drilling of the drill bit 10 is more accurate.
The outer wall of one end of the soft spring sleeve 7 is provided with a first flanging 17, the first flanging 17 comprises a first flanging inclined surface, and the included angle between the first flanging inclined surface and the outer wall of the soft spring sleeve 7 is 30 degrees.
In the above technical scheme, the first flange 17 is not only used for preventing the user from being scratched, but also plays a role in positioning and limiting, when the first flange 17 just contacts with the outer wall of the cylindrical cavity 14 and the outer wall of the first cavity, it indicates that the soft spring sleeve 7 and the steel wire soft spring 8 are just perfectly matched with the cylindrical cavity 14 and the first cavity, otherwise, the situation that the soft spring sleeve 7 and the steel wire soft spring 8 do not fill the cylindrical cavity 14 and the first cavity easily occurs, and meanwhile, when the following first pin 6 is inserted into the first pin hole, the first pin hole does not need to be aligned one by one.
The diameter of the first cavity is larger than that of the second cavity, a second flanging 28 is arranged on the outer wall of the joint of the upper connector 15 and the lower connector 16, the second flanging 28 comprises a second flanging inclined surface, the outer diameter of the second flanging is equal to that of the upper connector 15, and the included angle between the second flanging inclined surface and the outer wall of the lower connector 16 is 135 degrees.
In the above technical solution, the first cavity is used for connecting with the wire spring 8 and the spring cover 7, the wire spring 8 adjusts the drilling direction of the drill bit 10 by bending itself, because the width of the wire spring 8 is wider and is not easy to bend and break, the second cavity is used for connecting with the drill bit 10, for the patient, the smaller the hole diameter of the drill hole drilled by the drill bit 10 is, the less the body is, so the width of the drill hole is smaller, and the diameter of the first cavity is larger than the diameter of the second cavity; the right angle is easier to scratch than the obtuse angle, and the second flanging 28 is arranged so that the connection position of the upper connector 15 and the lower connector 16 is changed from the right angle to the obtuse angle, thereby reducing the scratching probability of a user; the outer diameter of the second flanging 28 is equal to the outer diameter of the upper connector 15, so that the surface of the device is smoother, the touch feeling is more comfortable during use, and the device is not tired after long-time use; the included angle between the second flanging inclined surface and the outer wall of the lower connector 16 is 135 degrees, so that the transition of the joint of the upper connector 15 and the lower connector 16 is more gentle, too much material is not added at the joint, and too much change of production cost is avoided.
The drill tip 20 comprises a first cutting edge 21 and a second cutting edge 22, the first cutting edge 21 and the second cutting edge 22 forming an angle of 90-118 degrees.
In the above technical solution, the drill 10 perforates the bone of the patient through the first cutting edge 21 and the second cutting edge 22, if the angle between the first cutting edge 21 and the second cutting edge 22 is relatively large, the drill tip 20 is relatively blunt, the drilling speed is slow, resulting in longer operation time, and adverse effect on the life health and safety of the patient; if the angle between the first cutting edge 21 and the second cutting edge 22 is small, the drill point 20 is sharp, the drilling speed is too high, excessive drilling is easy to occur, accidental injury is caused to a patient, and the drill point 20 is more easily worn when being too sharp, so that the device sets the included angle between the first cutting edge 21 and the second cutting edge 22 to be 90-118 degrees.
Gaskets 11 are arranged between the cylindrical cavity 14 and the triangular conical cavity 13 and between the first cavity and the second cavity.
In the technical scheme, the gasket 11 between the cylindrical cavity 14 and the triangular conical cavity 13 is used for preventing the steel wire soft spring 8 from displacing relative to the soft spring sleeve 7, preventing the steel wire soft spring 8 from entering the triangular conical cavity 13, and meanwhile, the gasket 11 provides supporting force for the steel wire soft spring 8, so that the position of one end of the steel wire soft spring 8 is fixed, the steel wire soft spring 8 can work better, the gasket 11 also prevents the soft spring sleeve 7 from colliding and rubbing with the inner wall of the triangular conical cavity 13, prevents the soft spring sleeve 7 from wearing, and shortens the service life of the soft spring sleeve 7; the gasket 11 between first cavity and the second cavity is used for preventing collision wear from taking place between drill bit 10 and wire rope spring 8, prevents that drill bit 10 when the skeleton drilling, and reverse effort is big, leads to drill bit 10 to have ascending effort to wire rope spring 8, and wire rope spring 8 takes place the displacement to the relative rope spring cover 7, influences the device's work effect.
The upper end 29, the lower end 32, the soft spring sleeve 7, the joint bottom rod 5 and the upper joint 15 are respectively provided with corresponding first pin holes, and the first pin 6 is arranged in each first pin hole; the drill rod 18 is provided with a pin groove, the lower connector 16 is provided with a second pin hole, the pin groove corresponds to the second pin hole, and the second pin 12 is arranged in the pin groove and the second pin hole.
In the above technical scheme, the first pin 6 connects and fixes the upper end 29 and the lower end 32 of the two ends of the steel wire soft spring 8 with the joint bottom rod 5 and the upper connector 15 respectively, so as to prevent the steel wire soft spring 8 from rotating relative to the joint bottom rod 5 and the upper connector 15, further ensure the connection firmness and stability between the steel wire soft spring 8 and the upper connector 15, and further ensure the device to work more stably; the second pin 12 is used for fixing the position of the drilling hole, preventing the drilling hole from falling from the lower connector 16, and the arrangement of the second pin 12 also facilitates the quick replacement of the drill bit 10; the first pin 6 and the second pin 12 are connected and fixed, so that each part is convenient to clean.
The upper end of the joint ejector rod 1 is provided with a chamfer, and one end, far away from the first flanging 17, of the steel wire soft spring 8 and the soft spring sleeve 7 is welded.
In the technical scheme, the chamfer not only enables the device to be assembled with an external power device more easily, but also prevents a user from being scratched during assembly; the welding of the soft wire spring 8 and the soft spring sleeve 7 not only ensures that the connection between the soft wire spring 8 and the soft spring sleeve 7 is firmer, but also the soft wire spring 8 and the soft spring sleeve 7 are integrated, so that the soft wire spring is convenient to connect with the cylindrical cavity 14 and the first cavity.
The working principle of the invention is as follows: the external power device drives the bone drill to rotate, when the drilling direction of the drill bit 10 is required to be controlled, a handle with a ferrule can be taken to penetrate through the drill bit 10, the ferrule is fixed on the drill rod 18 or the lower connector 16, so that the position of the drill bit 10 is kept still, then the wire soft spring 8 is pulled, and the drilling direction of the drill bit 10 can be controlled by adjusting the angle between the wire soft spring 8 and the drill bit 10; when the bone drill is assembled, the soft spring sleeves 7 are sleeved on the two ends of the steel wire soft spring 8, the first pin holes on the steel wire soft spring 8 are aligned with the first pin holes on the soft spring sleeves 7, then the steel wire soft spring 8 and the soft spring sleeves 7 are welded, the steel wire soft spring 8 with the soft spring sleeves 7 is assembled, the first pin holes on the cylindrical cavity 14 and the first cavity are aligned with the first pin holes of the shirt of the soft spring sleeves 7, the first pins 6 are plugged into the first pin holes for positioning connection, finally the drill rod 18 of the drill bit 10 is inserted into the lower connector 16, the pin grooves are aligned with the second pin holes, the second pins 12 are plugged into the pin grooves and the second pin holes, and the assembly is completed.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. A medical bone drill convenient to clean steel wire soft spring, its characterized in that: the medical bone drill comprises a quick connector, a steel wire soft spring (8), a soft spring sleeve (7), a connector (9) and a drill bit (10), wherein the quick connector sequentially comprises a connector ejector rod (1), an assembly rod and a connector bottom rod (5) from top to bottom, the connector (9) comprises an upper connector (15) and a lower connector (16), the drill bit (10) comprises a drill rod (18), a drill body (19) and a drill tip (20), one end of the steel wire soft spring (8) is connected with the connector bottom rod (5) through the soft spring sleeve (7), the other end of the steel wire soft spring is connected with the upper connector (15) through the soft spring sleeve (7), and the lower connector (16) is connected with the drill rod (18);
the shape of the joint ejector rod (1) is cylindrical, the assembly rod comprises an upper assembly block (2) and a lower assembly block (3), the structures of the upper assembly block (2) and the lower assembly block (3) are identical, the upper assembly block (2) comprises a first plane (24) and a first circular arc convex surface (25), the first plane (24) and the first circular arc convex surface (25) are staggered to form the upper assembly block (2), the circle center of the first circular arc convex surface (25) points to the inside of the upper assembly block (2), the side surface of the transition rod (4) is a circular arc concave surface, the circle center of the circular arc concave surface points to the outside of the transition rod (4), the joint bottom rod (5) is in a four-prism shape, the joint bottom rod (5) comprises a second plane (26) and a second circular arc convex surface (27), the circle center of the first circular arc convex surface (25) points to the inside of the second circular arc convex surface (27), the second plane (26) points to the inside of the second circular arc convex surface (27) and the second circular arc bottom rod (27) is larger than the circle center of the first circular arc bottom rod (24), a connecting cavity is formed in the joint bottom rod (5), the upper end of the connecting cavity is a triangular conical cavity (13), and the lower end of the connecting cavity is a cylindrical cavity; connector (9) are protruding connector of font, connector (9) are including connector (15) and lower connector (16), go up connector (15) and lower connector (16) inside first cavity and the second cavity of setting up respectively, first cavity and second cavity intercommunication, first cavity and second cavity are cylindric, soft spring cover (7) are inside hollow cylinder, all are provided with soft spring cover (7) in cylindrical cavity (14) and the first cavity, the both ends of steel wire soft spring (8) are connected with soft spring cover (7) in cylindrical cavity (14), the first cavity respectively.
2. The medical bone drill for facilitating cleaning of wire springs according to claim 1, wherein: the drill bit (10) is of an integrated structure in a strip shape, the upper end of a drill rod (18) is arranged in a lower connector (16), the drill rod (18) is a cylindrical rod body with a smooth surface, more than two spiral descending chip grooves (23) are formed in the drill body (19), the chip grooves (23) extend from the top end of the drill rod (18) to the position of a drill tip (20), and the drill tip (20) is in a triangular cone shape.
3. A medical bone drill for facilitating cleaning of wire springs according to claim 2, wherein: the steel wire soft spring comprises an upper end (29), an adjusting part (30), a soft spring part (31) and a lower end (32), wherein the upper end (29) and the lower end (32) are solid, a cavity is formed in the adjusting part (30) and the soft spring part (31), a chute is formed in the adjusting part (30), a limiting pipe (34) is arranged in the adjusting part (30), a protruding bolt (35) is arranged on the limiting pipe (34), the protruding bolt (35) is located in the chute, and a limiting nut (33) is arranged on the protruding bolt (35).
4. A medical bone drill for facilitating cleaning of wire springs according to claim 3, wherein: the diameter of first cavity is greater than the diameter of second cavity, be provided with second turn-ups (28) on the outer wall of last connector (15) and lower connector (16) junction, second turn-ups (28) include second turn-ups (28) inclined plane, the external diameter of second turn-ups (28) equals the external diameter of last connector (15), the contained angle of second turn-ups (28) inclined plane and lower connector (16) outer wall is 135 degrees.
5. The medical bone drill for facilitating cleaning of wire springs according to claim 4, wherein: the drill tip (20) comprises a first main cutting edge (21) and a second main cutting edge (22), and an included angle formed by the first main cutting edge (21) and the second main cutting edge (22) is 90-118 degrees.
6. The medical bone drill for facilitating cleaning of wire springs according to claim 5, wherein: gaskets (11) are arranged between the cylindrical cavity (14) and the triangular conical cavity (13) and between the first cavity and the second cavity.
7. The medical bone drill for facilitating cleaning of wire springs according to claim 6, wherein: corresponding first pin holes are formed in the upper end (29), the lower end (32), the soft spring sleeve (7), the joint bottom rod (5) and the upper connector (15), and first pins (6) are arranged in the first pin holes; the drill rod (18) is provided with a pin groove, the lower connector (16) is provided with a second pin hole, the pin groove corresponds to the second pin hole, and a second pin (12) is arranged in the pin groove and the second pin hole.
8. The medical bone drill for facilitating cleaning of wire springs according to claim 7, wherein: the upper end of the joint ejector rod (1) is provided with a chamfer, and the outer wall of one end of the soft spring sleeve (7) is provided with a first flanging (17).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910117490.6A CN109674505B (en) | 2019-02-15 | 2019-02-15 | Medical bone drill convenient to clean steel wire soft spring |
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| CN201910117490.6A CN109674505B (en) | 2019-02-15 | 2019-02-15 | Medical bone drill convenient to clean steel wire soft spring |
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| CN109674505B true CN109674505B (en) | 2024-01-09 |
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| CN111643150B (en) * | 2020-05-11 | 2022-02-15 | 天衍医疗器材有限公司 | Module soft drill |
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| EP3337411B1 (en) * | 2015-08-18 | 2021-07-14 | Incipio Devices SA | Offset reamer driver |
| US11022169B2 (en) * | 2017-03-07 | 2021-06-01 | Med X Composites, Llc | Disposable rotary flexible driveshaft and surgical cutter |
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