CN111839654A - Electronic bone drill of direction location type - Google Patents
Electronic bone drill of direction location type Download PDFInfo
- Publication number
- CN111839654A CN111839654A CN202010723989.4A CN202010723989A CN111839654A CN 111839654 A CN111839654 A CN 111839654A CN 202010723989 A CN202010723989 A CN 202010723989A CN 111839654 A CN111839654 A CN 111839654A
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- Prior art keywords
- centering
- bone drill
- kirschner wire
- type electric
- positioning
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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
- A61B17/1604—Chisels; Rongeurs; Punches; Stamps
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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
- A61B17/1622—Drill handpieces
-
- 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
- A61B17/1622—Drill handpieces
- A61B17/1624—Drive mechanisms therefor
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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)
Abstract
The invention discloses a guide positioning type electric bone drill which comprises a bone drill shell, wherein a driving mechanism and a transmission mechanism which are connected are arranged in the bone drill shell, the transmission mechanism is connected with a positioning and clamping mechanism which extends out of the front end of the bone drill shell and is used for centering and clamping a Kirschner wire, and the positioning and clamping mechanism plays a role in centering and clamping the Kirschner wire at the same time, so that the clamping of the Kirschner wire is not easy to generate an eccentric distance relative to a rotating center. The rear end of the bone drill shell is provided with a guiding and positioning mechanism for guiding and centering the Kirschner wire in a penetrating way. The guide positioning mechanism plays a role in pre-centering when the Kirschner wire is installed, so that the axis of the Kirschner wire is always aligned with the axis of the positioning clamping mechanism, and the phenomenon that the Kirschner wire shakes or deforms during working due to the eccentric distance generated by installation is avoided. The guiding and positioning type electric bone drill has the advantages of simple connection among the mechanisms, easy disassembly and assembly and convenient use and can carry out all-dimensional disinfection on the bone drill.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a guide positioning type electric bone drill.
Background
A k-wire is a stainless steel wire that connects broken bones. In the orthopedic surgery, the kirschner wire is used as a common internal fixation material for fixing the fracture. The electric bone drill is used as an auxiliary tool of a kirschner wire and is often used for performing surgical treatment such as drilling a bone of a patient. When the Kirschner wire is used, an electric bone drill is used for clamping and drilling into a bone through high-speed rotation.
In the prior art, the kirschner wire is usually clamped by a three-jaw drill chuck. Because the Kirschner wire is slender, eccentricity is easily generated in the clamping process, so that the drilling resistance is increased, the drilled hole is enlarged, and even the Kirschner wire is broken in severe cases. In addition, since the rear end of the k-wire is not clamped and fixed, the k-wire is likely to shake during high-speed rotation, the k-wire is likely to be subjected to plastic deformation such as bending without being operated, and the stability of the drilling process is also poor. The existing electric bone drill is difficult to disassemble and disinfect comprehensively due to complex structure, so that the risk potential of infection of a patient is increased.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects in the prior art and provides a guide positioning type electric bone drill which is high in concentricity, reliable in clamping, stable in structure, convenient to disassemble and easy to maintain.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides an electronic bone drill of direction location type, includes the bone drill casing, be equipped with continuous actuating mechanism and drive mechanism in the bone drill casing, drive mechanism is connected with the location fixture who is used for centering and the centre gripping to the kirschner wire that stretches out from bone drill casing front end, bone drill casing rear end is worn to be equipped with and is used for leading and the direction location mechanism of centering to the kirschner wire.
Foretell electronic bone drill of guide location type, it is preferred, guide location mechanism includes centering sleeve pipe, V-arrangement centering guide rail and V-arrangement stopper, centering sleeve pipe is adorned admittedly at bone drill casing rear end, V-arrangement centering guide rail is installed at centering sleeve pipe and V-arrangement centering guide rail's V-arrangement groove and kirschner wire cooperation centering, V-arrangement stopper sliding fit is on V-arrangement centering guide rail and both surround the kirschner wire jointly.
In the above-mentioned guide positioning type electric bone drill, preferably, the V-shaped limiting block is provided with a pushing portion for pushing an end portion of the kirschner wire.
Preferably, the centering sleeve is provided with a needle placing port communicated with the V-shaped groove.
In the above-mentioned guide positioning type electric bone drill, preferably, a chute is provided in the centering sleeve, and a transparent cover plate for opening and closing the needle placing opening is provided in the chute.
In the above-described guide positioning type electric bone drill, it is preferable that the kirschner wire is engraved with a base line for observing abutment of the kirschner wire with the abutting portion from the transparent cover plate.
The above-mentioned electronic bone drill of direction location type, it is preferred that the terminal cover of centering sleeve is equipped with changes the cover, it installs the push rod that is connected with the V-arrangement stopper to change the cover in, it is equipped with circumference scale to change the cover front end portion, be equipped with axial scale on the centering sleeve, circumference scale and basic line all have scale corresponding relation with axial scale.
Foretell electronic bone drill of direction location type, it is preferred, location fixture includes multilobe chuck, conical nut and centering base shaft, be equipped with the conical centering hole of centering to the kirschner wire in the centering base shaft, the setting of centering base shaft is connected at bone drill casing front end and with drive mechanism, multilobe chuck suit is on centering base shaft, conical nut and centering base shaft threaded connection and drive multilobe chuck top centering base shaft and press from both sides tight kirschner wire.
Preferably, the transmission mechanism comprises a worm, a worm wheel, a bearing, a set screw and a hollow transmission shaft, the worm is connected to the driving end of the driving mechanism, the worm wheel and the worm are meshed with each other, the rear end of the hollow transmission shaft is connected with the worm wheel, the positioning and clamping mechanism is sleeved at the front end of the hollow transmission shaft, the set screw connects the hollow transmission shaft with the positioning and clamping mechanism along the radial direction of the hollow transmission shaft, the inner ring of the bearing is fixedly arranged on the hollow transmission shaft, and the outer ring of the bearing is fixedly arranged in the bone drill shell.
The above-mentioned electronic bone drill of direction location type, it is preferred, actuating mechanism includes motor, battery and button, the motor is connected with the battery and all locates in the bone drill casing, the motor drive end is connected with drive mechanism, the button is located bone drill casing rear end.
Compared with the prior art, the invention has the advantages that:
the guide positioning type electric bone drill provided by the invention is provided with the positioning clamping mechanism which extends out of the front end of the bone drill shell and is used for centering and clamping the Kirschner wire, the positioning clamping mechanism has a better centering function on the Kirschner wire, the traditional line contact of a clamping contact part is changed into surface contact, the surface of the Kirschner wire is prevented from being crushed, and the clamping is more stable. The bone drill casing rear end is worn to be equipped with and is used for leading the guiding orientation mechanism with the centering to the kirschner wire, and this guiding orientation mechanism plays the effect of centering in advance when installing the kirschner wire, makes the axis of kirschner wire align with location fixture's axis, avoids because the eccentricity that produces when installing, makes the kirschner wire during operation produce and rocks or warp. The bone drill is simple in connection among mechanisms, simple in disassembly and assembly and restoration, and convenient for omnibearing disinfection of the bone drill after use. The invention also has the advantages of convenient operation, safety, reliability, simple maintenance, ingenious design and easy manufacture.
Drawings
Fig. 1 is a front view structural schematic diagram of a kirschner wire electric bone drill with a guiding and positioning function.
Fig. 2 is a schematic sectional structural view of the kirschner wire electric bone drill with the guiding and positioning functions.
Fig. 3 is a schematic view of a part of a cross-sectional enlarged structure of the kirschner wire electric bone drill with a guiding and positioning function.
Fig. 4 is an exploded structural diagram of internal parts of the kirschner wire electric bone drill with the guiding and positioning functions.
Fig. 5 is a schematic sectional structure view of the guide positioning mechanism.
Fig. 6 is a schematic perspective view of the V-shaped stopper.
Fig. 7 is a schematic perspective view of the positioning and clamping mechanism.
Fig. 8 is a perspective view of the kirschner wire.
Illustration of the drawings:
1. a bone drill housing; 2. a drive mechanism; 21. a motor; 22. a battery; 23. a button; 3. a transmission mechanism; 31. a worm; 32. a turbine; 33. a bearing; 34. tightening the screw; 35. a hollow transmission shaft; 4. a Kirschner wire; 41. a base line; 5. positioning the clamping mechanism; 51. a multi-petal cartridge; 52. a tapered nut; 53. centering the base shaft; 531. a tapered centering hole; 6. a guiding and positioning mechanism; 61. a centering sleeve; 611. placing a needle opening; 612. a chute; 613. a transparent cover plate; 614. axial graduation; 62. a V-shaped centering guide rail; 621. a V-shaped groove; 63. a V-shaped limiting block; 631. a pushing part; 7. rotating the sleeve; 71. circumferential scales are arranged; 8. a push rod.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
As shown in fig. 1 to 8, the guide positioning type electric bone drill of the present embodiment includes a bone drill housing 1, a driving mechanism 2 and a transmission mechanism 3 connected to each other are provided in the bone drill housing 1, the transmission mechanism 3 is connected with a positioning clamping mechanism 5 extending from the front end of the bone drill housing 1 and used for centering and clamping a kirschner wire 4, and the positioning clamping mechanism 5 plays a role of centering and clamping the kirschner wire 4 at the same time, so that the clamping of the kirschner wire 4 is not easy to generate an eccentric distance relative to the rotation center. The back end of the bone drill shell 1 is provided with a guiding and positioning mechanism 6 for guiding and centering the Kirschner wire 4. The guide positioning mechanism 6 plays a role in pre-centering when the Kirschner wire 4 is installed, so that the axis of the Kirschner wire 4 is always aligned with the axis of the positioning clamping mechanism 5, and the phenomenon that the Kirschner wire 4 shakes or deforms during working due to the eccentric distance generated by installation is avoided. The guiding and positioning type electric bone drill has the advantages of simple connection among the mechanisms, easy disassembly and assembly and convenient use and can carry out all-dimensional disinfection on the bone drill.
In this embodiment, the guiding and positioning mechanism 6 includes a centering sleeve 61, a V-shaped centering guide rail 62 and a V-shaped limiting block 63, the centering sleeve 61 is fixedly installed at the rear end of the bone drill housing 1, the V-shaped centering guide rail 62 is installed in the centering sleeve 61, the V-shaped groove 621 of the V-shaped centering guide rail 62 is centered in cooperation with the kirschner wire 4, and the V-shaped limiting block 63 is slidably installed on the V-shaped centering guide rail 62 and surrounds the kirschner wire 4 together with the V-shaped centering guide rail 62. The centering sleeve 61 is fixedly arranged on the bone drill shell 1, so that the coaxiality of the centering sleeve 61 and the positioning and clamping mechanism 5 is guaranteed, and eccentricity is avoided. V-arrangement groove 621 of V-arrangement centering guide rail 62 can play good centering effect to kirschner wire 4, and V-arrangement stopper 63 is through cooperating with V-arrangement centering guide rail 62, and with kirschner wire 4 encirclement, has restricted the radial runout that kirschner wire 4 produced in the pivoted time, has reduced kirschner wire 4's deformation degree, has improved the stability of system. But has a clearance with the k-wire 4, so that the rotation resistance of the k-wire 4 is not increased.
In this embodiment, the V-shaped stop block 63 is provided with a pushing portion 631 for pushing the end of the k-wire 4. When the kirschner wire 4 is installed, the end of the kirschner wire 4 abuts against the abutting part 631, and the kirschner wire 4 is pushed forward by the abutting part 631.
In this embodiment, the centering sleeve 61 is provided with a needle placing opening 611 communicated with the V-shaped groove 621. The needle placing port 611 facilitates the smooth placement of the kirschner wire 4 into the V-shaped groove 621.
In this embodiment, a sliding groove 612 is disposed in the centering sleeve 61, and a transparent cover plate 613 for opening and closing the needle placement opening 611 is disposed in the sliding groove 612. The transparent cover 613 may be used to observe the installation condition of the k-wire 4 in the centering sleeve 61, and may also serve to isolate the environment in the centering sleeve 61 from the external environment, thereby preventing dust and bacteria from entering the centering sleeve 61.
In this embodiment, the base wire 41 for observing the contact between the kirschner wire 4 and the abutting portion 631 from the transparent cover 613 is engraved on the kirschner wire 4. The base wire 41 is used to determine whether the k-wire 4 is mounted in place, and when the k-wire 4 is tightly abutted against the abutting portion 631, the base wire 41 is aligned with the contour line of the end face of the abutting portion 631.
In this embodiment, the end cover of centering sleeve 61 is equipped with changes cover 7, changes the built-in push rod 8 that is equipped with and is connected with V-arrangement stopper 63 of cover 7, changes the cover 7 front end and is equipped with circumference scale 71, is equipped with axial scale 614 on the centering sleeve 61, and circumference scale 71 and basic line 41 all have scale corresponding relation with axial scale 614. By rotating the rotating sleeve 7, the push rod 8 is driven, and the push rod 8 further pushes the V-shaped limiting block 63, so that the V-shaped limiting block 63 pushes the Kirschner wire 4. The circumferential scale 71 arranged on the rotating sleeve 7 corresponds to the axial scale 614 arranged on the centering sleeve 61, so that the feeding amount of the Kirschner wire 4 can be visualized, the accurate control of an operator is facilitated, and the operation standardization of the electric bone drill is also facilitated.
In this embodiment, the positioning and clamping mechanism 5 includes a multi-disc chuck 51, a conical nut 52 and a centering base shaft 53, a conical centering hole 531 for centering the kirschner wire 4 is provided in the centering base shaft 53, the centering base shaft 53 is provided at the front end of the bone drill housing 1 and connected to the transmission mechanism 3, the multi-disc chuck 51 is sleeved on the centering base shaft 53, and the conical nut 52 is in threaded connection with the centering base shaft 53 and drives the multi-disc chuck 51 to tightly jack the centering base shaft 53 and clamp the kirschner wire 4. When the kirschner wire 4 is placed on the V-shaped centering guide rail 62 and pushed forwards, the conical centering hole 531 plays a role of guiding the kirschner wire 4, so that the kirschner wire 4 is closer to the rotation center of the positioning and clamping mechanism 5. The centering base shaft 53 is connected with the transmission mechanism 3, and the transmission mechanism 3 drives the centering base shaft 53 to rotate. Through the threaded connection of the conical nut 52 and the centering base shaft 53, the conical nut 52 and the centering base shaft 53 together press the multi-petal chuck 51 to force the multi-petal chuck 51 to tightly hold the Kirschner wire 4. And due to the co-extrusion, the multi-petal cartridge 51 has a better centering function.
In this embodiment, the transmission mechanism 3 includes a worm 31, a worm wheel 32, a bearing 33, a set screw 34 and a hollow transmission shaft 35, the worm 31 is connected to the driving end of the driving mechanism 2, the worm wheel 32 and the worm 31 are engaged with each other, the rear end of the hollow transmission shaft 35 is connected to the worm wheel 32, the positioning and clamping mechanism 5 is sleeved at the front end of the hollow transmission shaft 35, the set screw 34 connects the hollow transmission shaft 35 and the positioning and clamping mechanism 5 along the radial direction of the hollow transmission shaft 35, the inner ring of the bearing 33 is fixedly mounted on the hollow transmission shaft 35, and the outer ring of the bearing 33 is fixedly mounted in the. The transmission mechanism 3 adopts a worm and gear mechanism, so that the higher rotating speed of the driving mechanism 2 can be converted into the low rotating speed suitable for the bone drill, and the worm and gear mechanism is tightly matched, so that vibration and noise are not easy to generate, and the operation of the transmission mechanism 3 is more stable. The bearing 33 is used to support the rotation of the hollow transmission shaft 35. The set screw 34 is used for connecting the hollow transmission shaft 35 and the positioning and clamping mechanism 5, and transmitting the torque of the hollow transmission shaft 35 to the positioning and clamping mechanism 5.
In this embodiment, the driving mechanism 2 includes a motor 21, a battery 22 and a button 23, the motor 21 is connected with the battery 22 and is all disposed in the bone drill housing 1, the driving end of the motor 21 is connected with the transmission mechanism 3, the button 23 is disposed at the rear end of the bone drill housing 1, the design more conforming to human engineering is achieved, the pressing direction of the button 23 is the same as the feeding direction of the bone drill, and therefore an operator can use the bone drill in a more easily controlled and labor-saving manner.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-described embodiments. Modifications and variations that may occur to those skilled in the art without departing from the spirit and scope of the invention are to be considered as within the scope of the invention.
Claims (10)
1. The utility model provides an electronic bone drill of direction location type which characterized in that: including bone drill casing (1), be equipped with continuous actuating mechanism (2) and drive mechanism (3) in bone drill casing (1), drive mechanism (3) are connected with from bone drill casing (1) front end stretch out be used for centering and the location fixture (5) of centre gripping to kirschner wire (4), bone drill casing (1) rear end is worn to be equipped with and is used for leading and the direction positioning mechanism (6) of centering to kirschner wire (4).
2. The guided positioning type electric bone drill according to claim 1, wherein: the guiding and positioning mechanism (6) comprises a centering sleeve (61), a V-shaped centering guide rail (62) and a V-shaped limiting block (63), the centering sleeve (61) is fixedly arranged at the rear end of the bone drill shell (1), the V-shaped centering guide rail (62) is arranged in the centering sleeve (61), a V-shaped groove (621) of the V-shaped centering guide rail (62) is matched with the Kirschner wire (4) for centering, and the V-shaped limiting block (63) is slidably arranged on the V-shaped centering guide rail (62) and surrounds the Kirschner wire (4) together.
3. The guided positioning type electric bone drill according to claim 2, wherein: and the V-shaped limiting block (63) is provided with a pushing part (631) for pushing the end part of the Kirschner wire (4).
4. The guided positioning type electric bone drill according to claim 3, wherein: the centering sleeve (61) is provided with a needle placing port (611) communicated with the V-shaped groove (621).
5. The guided positioning type electric bone drill according to claim 4, wherein: a sliding groove (612) is arranged in the centering sleeve (61), and a transparent cover plate (613) for opening and closing the needle placing opening (611) is arranged in the sliding groove (612).
6. The guided positioning type electric bone drill according to claim 5, wherein: the Kirschner wire (4) is engraved with a basic line (41) for observing that the Kirschner wire (4) abuts against the abutting part (631) from the transparent cover plate (613).
7. The guided positioning type electric bone drill according to claim 6, wherein: the end cover of centering sleeve pipe (61) is equipped with changes cover (7), it installs push rod (8) of being connected with V-arrangement stopper (63) to change cover (7) built-in, it is equipped with circumference scale (71) to change cover (7) front end portion, be equipped with axial scale (614) on centering sleeve pipe (61), circumference scale (71) and basic line (41) all have scale corresponding relation with axial scale (614).
8. The pilot positioning type electric bone drill according to any one of claims 2 to 7, wherein: location fixture (5) are including multilobe chuck (51), conical nut (52) and centering basic shaft (53), be equipped with in centering basic shaft (53) and be connected with drive mechanism (3) to the tapered centering hole (531) of kirschner wire (4) centering, centering basic shaft (53) set up at bone drill casing (1) front end, multilobe chuck (51) suit is on centering basic shaft (53), conical nut (52) and centering basic shaft (53) threaded connection drive multilobe chuck (51) top tight centering basic shaft (53) and press from both sides tight kirschner wire (4).
9. The pilot positioning type electric bone drill according to any one of claims 2 to 7, wherein: drive mechanism (3) include worm (31), worm wheel (32), bearing (33), holding screw (34) and hollow transmission shaft (35), worm (31) are connected in the drive end of actuating mechanism (2), worm wheel (32) and worm wheel (31) intermeshing, hollow transmission shaft (35) rear end is connected with worm wheel (32), location fixture (5) suit is at hollow transmission shaft (35) front end, holding screw (34) are connected hollow transmission shaft (35) and location fixture (5) along hollow transmission shaft (35) radial direction, bearing (33) inner circle is adorned admittedly on hollow transmission shaft (35), bearing (33) outer lane is adorned admittedly in bone drill casing (1).
10. The pilot positioning type electric bone drill according to any one of claims 2 to 7, wherein: actuating mechanism (2) include motor (21), battery (22) and button (23), motor (21) are connected and all locate bone drill casing (1) with battery (22), motor (21) drive end is connected with drive mechanism (3), bone drill casing (1) rear end is located in button (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010723989.4A CN111839654B (en) | 2020-07-24 | 2020-07-24 | Guide positioning type electric bone drill |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010723989.4A CN111839654B (en) | 2020-07-24 | 2020-07-24 | Guide positioning type electric bone drill |
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| CN111839654A true CN111839654A (en) | 2020-10-30 |
| CN111839654B CN111839654B (en) | 2022-05-20 |
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