CN217827997U - Drilling equipment for orthopedics - Google Patents

Abstract

The application relates to the technical field of biomedical instruments, in particular to an orthopedic drilling device, which comprises a shell, a first driving piece, a second driving piece and a drill bit, wherein the shell is provided with a first driving piece and a second driving piece; a driving cavity is formed in the shell, a driving hole communicated with the driving cavity is formed in the side wall of the shell, and a drilling outlet communicated with the driving cavity is formed in the bottom wall of the shell; the first driving part is arranged in the driving cavity and comprises a rotating shaft and a driven gear which is formed outside the rotating shaft and surrounds the rotating shaft, a through mounting channel is formed in the rotating shaft, and the drill bit is mounted in the mounting channel; the second driving piece comprises a driving shaft and a driving gear formed at one end of the driving shaft, the driving gear extends into the driving cavity from the driving hole, and the driving gear is meshed with the driven gear; the drill bit is axially movable within the mounting channel and is extendable out of the drill opening. The driving gear drives the driven gear to rotate, and the rotating stability of the rotating shaft can be improved, so that the drill bit can be reduced from shaking in the radial direction, and the drilling accuracy of the drill bit is improved.

Description

Drilling equipment for orthopedics

Technical Field

The application relates to the technical field of biomedical instruments, in particular to a drilling device for orthopedics.

Background

In the orthopedic treatment operation, the fixation of orthopedic dressing is generally applied to daily orthopedic operation or artificial tooth implantation. When the bone tissue is drilled in the orthopedic surgery, most of the bone tissue is drilled by a drilling device. Existing drilling apparatus typically include a driver and a drill bit, the driver driving the drill bit to rotate at high speed. The driving piece of the existing drilling device comprises a rotary drum and blades formed on the outer side of the rotary drum, a drill bit is installed in the rotary drum, water flow impacts the blades to enable the rotary drum to rotate, and then the rotary drum drives the drill bit to rotate. However, when water flow impacts the blades, radial force is applied to the blades, the rotary drum is prone to shaking in the radial direction, and further the drill bit shakes in the radial direction, so that the drilling effect is affected.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the application provides a drilling device for orthopedics, driving gear drive driven gear rotates, can improve rotation axis pivoted stationarity to can reduce the drill bit and upwards rock, improve the accuracy of drill bit drilling, the effectual problem that exists among the prior art of having solved.

In order to solve the above problems, the present application provides an orthopedic drilling device, including a housing, a first driving member, a second driving member, and a drill bit; a driving cavity is formed in the shell, a driving hole communicated with the driving cavity is formed in the side wall of the shell, and a drilling outlet communicated with the driving cavity is formed in the bottom wall of the shell; the first driving piece is arranged in the driving cavity and comprises a rotating shaft and a driven gear which is formed outside the rotating shaft and surrounds the rotating shaft, a through installation channel is formed in the rotating shaft, and the drill bit is installed in the installation channel; the second driving piece comprises a driving shaft and a driving gear formed at one end of the driving shaft, the driving gear extends into the driving cavity from the driving hole, the driving gear is meshed with the driven gear, the driving gear can drive the driven gear to rotate so as to enable the rotating shaft to rotate circumferentially, and the drill bit can rotate circumferentially along with the rotating shaft; the drill bit is axially movable within the mounting channel and is extendable out of the drill outlet.

Furthermore, the driving gear is a driving bevel gear, and the driven gear is a driven bevel gear.

Furthermore, a first bearing is fixed in the driving cavity, the first bearing is sleeved outside the rotating shaft, and supports one side of the driven bevel gear, which deviates from the tooth socket.

Further, the outer side wall of the housing forms an annular cylinder surrounding the drive shaft, the annular cylinder forms a connection passage communicating with the drive hole, and the drive shaft extends into the connection passage.

Furthermore, a second bearing is fixed in the connecting channel, the second bearing is sleeved outside the driving shaft, a radially protruding abutting part is formed at one end of the driving shaft, which is far away from the driving bevel gear, and the abutting part abuts against one side, which is far away from the driving bevel gear, of the second bearing.

Furthermore, a flexible shaft connecting groove is formed at one end, far away from the driving gear, of the driving shaft.

Furthermore, a drilling pressing surface is formed on one side, away from the drilling outlet, of the drill bit, a liquid inlet area is formed between the drilling pressing surface and the inner wall of the driving cavity, a liquid inlet hole communicated with the liquid inlet area is formed in the shell wall of the shell, a liquid inlet channel communicated with the liquid inlet area and the drilling outlet is formed in the drill bit, and a liquid discharge hole communicated with the drilling outlet is formed in the side wall of the drilling outlet.

Furthermore, a first annular groove is formed in the outer side of the driving shaft, a first sealing ring is installed in the first annular groove, and the first sealing ring abuts against the inner wall of the driving hole.

Furthermore, a second annular groove is formed in the outer side of the rotating shaft, a second sealing ring is installed in the second annular groove and abuts against the inner wall of the driving cavity, and the second sealing ring is located on one side, away from the drilling outlet, of the driving hole.

Further, a limit groove extending in the axial direction of the rotary shaft is formed in the inner wall of the mounting passage, a limit portion which is in insertion fit with the limit groove is formed on the outer side of the drill, and the limit portion can move along the limit groove.

The beneficial effect of this application lies in, the drilling equipment for orthopedics that this application provided, when its driving gear drive driven gear rotated, can reduce and apply radial impact force to driven gear, can improve rotation axis pivoted stationarity to can reduce the drill bit and upwards rock, improve the accuracy of drill bit drilling. And the driving gear and the driven gear are adopted for driving, so that the rotating speed of the drill bit can be accurately controlled. In addition, the rotating shaft can drive the drill bit to rotate, and can provide an axial moving channel for the drill bit, the structure is compact, the whole size of the drilling device can be reduced, and the drilling device is more suitable for operation in a narrow space. The utility model provides an effectual problem of having solved existence among the prior art of drilling equipment for orthopedics.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic perspective view of a drilling device according to an embodiment of the present application.

Fig. 2 is a front view of a drilling device according to an embodiment of the present disclosure.

Fig. 3 isbase:Sub>A schematic sectional view atbase:Sub>A-base:Sub>A in fig. 2.

Fig. 4 is a schematic side view of a drilling device according to an embodiment of the present disclosure.

Fig. 5 is a schematic sectional view at B-B in fig. 4.

Fig. 6 is a schematic perspective view of a housing according to an embodiment of the present application.

Fig. 7 is a schematic perspective view illustrating a second driving member according to an embodiment of the present application.

Fig. 8 is a schematic perspective view of a first driving member according to an embodiment of the present application.

Fig. 9 is a schematic perspective view of a drill according to an embodiment of the present disclosure.

Wherein: 1. a housing; 101. a drive chamber; 102. a drive aperture; 103. discharging a drill hole; 104. an annular cylinder; 1041. a connecting channel; 105. a liquid inlet area; 106. a liquid inlet hole; 107. a drain hole; 2. a first driving member; 201. a rotating shaft; 2011. installing a channel; 2012. a second annular groove; 2013. a limiting groove; 202. a driven gear; 3. a second driving member; 301. a drive shaft; 3011. an abutting portion; 3012. connecting grooves of the flexible shaft; 3013. a first annular groove; 302. a driving gear; 4. a drill bit; 401. pressing a drilling surface; 402. a liquid inlet channel; 403. a limiting part; 5. a first bearing; 6. a second bearing; 7. a first seal ring; 8. and a second seal ring.

Detailed Description

In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.

It should be noted that in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced otherwise than as specifically described herein and, therefore, the scope of the present application should not be limited by the specific embodiments disclosed below.

In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be taken as limiting the present application.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. However, the direct connection means that the two bodies are not connected to each other by the intermediate structure but connected to each other by the connecting structure to form a whole. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the present application, as shown in fig. 1 to 9, there is provided a drilling device for orthopedics, comprising a housing 1, a first driver 2, a second driver 3, a drill bit 4; a driving cavity 101 is formed inside the shell 1, a driving hole 102 communicated with the driving cavity 101 is formed in the side wall of the shell 1, and a drilling outlet 103 communicated with the driving cavity 101 is formed in the bottom wall of the shell 1; the first driving element 2 is installed in the driving cavity 101, the first driving element 2 comprises a rotating shaft 201 and a driven gear 202 which is formed outside the rotating shaft 201 and surrounds the rotating shaft 201, a through installation channel 2011 is formed inside the rotating shaft 201, and the drill 4 is installed in the installation channel 2011; the second driving member 3 comprises a driving shaft 301 and a driving gear 302 formed at one end of the driving shaft 301, the driving gear 302 extends into the driving cavity 101 from the driving hole 102, the driving gear 302 is meshed with the driven gear 202, the driving gear 302 can drive the driven gear 202 to rotate so as to enable the rotating shaft 201 to rotate circumferentially, and the drill 4 can rotate circumferentially along with the rotating shaft 201; the drill bit 4 is axially movable within the mounting passage 2011 and is extendable out of the drill port 103.

The application provides a drilling equipment for orthopedics, it is when using, and driving gear 302 drive driven gear 202 rotates to make rotation axis 201 circumferential direction, rotation axis 201 can drive 4 circumferential direction of drill bit, and simultaneously, drill bit 4 axial displacement can stretch out drill hole 103 in installation passageway 2011, thereby realizes holing on the bone tissue. When the driving gear 302 drives the driven gear 202 to rotate, the radial impact force applied to the driven gear 202 can be reduced, and the rotating stability of the rotating shaft 201 can be improved, so that the radial shaking of the drill bit 4 can be reduced, and the drilling accuracy of the drill bit 4 can be improved. And the driving gear 302 and the driven gear 202 are adopted for driving, which is beneficial to accurately controlling the rotating speed of the drill bit 4.

In addition, the rotating shaft 201 can drive the drill bit 4 to rotate, and can provide an axial moving channel for the drill bit 4, so that the structure is compact, the whole volume of the drilling device can be reduced, and the drilling device is more suitable for operation in a narrow space. Especially when drilling on the ossicles, the volume that reduces drilling equipment is convenient for the patient more and bites drilling equipment, travelling comfort when can improve the patient and bite drilling equipment.

Regarding the form of the driving gear 302 and the driven gear 202, in a preferred embodiment, more specifically, the driving gear 302 is a driving bevel gear, and the driven gear 202 is a driven bevel gear. As shown in figure 3, the driving bevel gear and the driven bevel gear can change the transmission direction, so that the transmission between the intersecting shafts is realized, the structure is compact, and the overall size of the drilling device is favorably reduced.

More specifically, a first bearing 5 is fixed in the driving cavity 101, the first bearing 5 is sleeved outside the rotating shaft 201, and the first bearing 5 supports one side of the driven bevel gear departing from the tooth space. As shown in fig. 3, the first bearing 5 can support the driven bevel gear in the axial direction, thereby axially limiting the rotation shaft 201, preventing the rotation shaft 201 from moving in the axial direction, and further improving the reliability of the engagement between the driven bevel gear and the driving bevel gear. In addition, the first bearing 5 is sleeved on the outer side of the rotating shaft 201 and can limit the rotating shaft 201 in the radial direction, so that the radial movement of the rotating shaft 201 is reduced, the radial movement of the drill bit 4 is reduced, and the drilling accuracy of the drill bit 4 is improved. In addition, the first bearing 5 can reduce resistance to rotation of the rotary shaft 201.

The present embodiment does not limit the specific form of the first bearing 5. In a preferred embodiment, the first bearing 5 is a conical bearing.

With regard to the structure of the housing 1, more specifically, the outer side wall of the housing 1 forms an annular cylinder 104 surrounding the drive shaft 301, the annular cylinder 104 forms a connecting passage 1041 communicating with the drive hole 102, and the drive shaft 301 protrudes into the connecting passage 1041. As shown in fig. 3, when the driving shaft 301 rotates, the annular cylinder 104 can protect the driving shaft 301 to prevent the operator and the patient from contacting the rotating driving shaft 301 and being injured.

More specifically, a second bearing 6 is fixed in the connecting channel 1041, the second bearing 6 is sleeved outside the driving shaft 301, one end of the driving shaft 301 far away from the driving bevel gear forms an abutting portion 3011 protruding in the radial direction, and the abutting portion 3011 abuts against one side of the second bearing 6 far away from the driving bevel gear. As shown in fig. 3, the second bearing 6 can limit the driving shaft 301 in the axial direction and the radial direction of the driving shaft 301, so as to reduce the axial movement and the radial movement of the driving shaft 301, and improve the stability of the rotation of the driving shaft 301, so as to improve the stability of the driving bevel gear driving the driven bevel gear, and further improve the stability of the rotation of the drill 4; and the second bearing 6 can reduce the resistance to rotation of the drive shaft 301. Further, the second bearing 6 can position the contact portion 3011 of the drive shaft 301, and can improve the accuracy of meshing the driving bevel gear and the driven bevel gear.

It should be noted that the present embodiment does not limit the specific form of the second bearing 6. In the preferred embodiment, the second bearing 6 is a ball bearing. In the present embodiment, the number of the second bearings 6 is not limited. In the embodiment shown in fig. 3, two second bearings 6 are provided.

As for the structure of the driving shaft 301, more specifically, a flexible shaft connecting slot 3012 is formed at one end of the driving shaft 301 away from the driving gear 302. As shown in fig. 7, the flexible shaft connecting slot 3012 is used to connect a flexible shaft, and the flexible shaft can transmit a rotational force to the driving shaft 301, so as to rotate the driving shaft 301. Compared with the transmission of a pneumatic motor, the flexible shaft is small in occupied space when being arranged in the drilling device, and the size of the drilling device is favorably reduced.

In a preferred embodiment, more specifically, a drilling surface 401 is formed on one side of the drilling head 4 facing away from the drilling outlet 103, a liquid inlet area 105 is formed between the drilling surface 401 and the inner wall of the driving cavity 101, a liquid inlet hole 106 communicated with the liquid inlet area 105 is formed in the wall of the casing 1, a liquid inlet channel 402 communicated with the liquid inlet area 105 and the drilling outlet 103 is formed in the drilling head 4, and a liquid outlet hole 107 communicated with the drilling outlet 103 is formed in the side wall of the drilling outlet 103.

With reference to fig. 1, 3, and 5, during drilling, cooling fluid may enter the fluid inlet region 105 through the fluid inlet hole 106 to apply pressure on the bit surface 401 of the drill bit 4, thereby pushing the drill bit 4 to move axially in the mounting passage 2011 and pushing the drill bit 4 to extend out of the drill opening 103. Meanwhile, the coolant entering the liquid inlet area 105 can flow into the liquid inlet channel 402 of the drill bit 4 to cool the drill bit 4, so that the bone is prevented from high-temperature necrosis, and the coolant can wash away bone fragments, thereby being convenient for cleaning the bone fragments. The drainage hole 107 can be connected with an external negative pressure pipeline, so that negative pressure is formed at the drainage hole 107, and the cooling liquid and the bone fragments can be discharged from the drainage hole 107 under the action of the negative pressure.

Because the coolant can continuously enter the liquid inlet channel 402 from the liquid inlet hole 106 and then be discharged from the liquid outlet hole 107, the coolant can continuously take away the heat generated by the drill bit 4, and the cooling effect can be improved. Moreover, the bone fragments can be continuously discharged along with the cooling liquid, so that the bone fragments can be conveniently cleaned, and particularly, when the tooth bones are drilled, effusion in the oral cavity of a patient can be reduced. After the drilling work is completed, the rotating speed of the driving gear 302 can be reduced, and the liquid inlet hole 106 is communicated with a negative pressure pipeline, so that a negative pressure environment is formed inside the shell 1, the drill bit 4 is sucked back into the installation channel 2011, and the drill bit 4 can conveniently return to the original position.

In the present embodiment, the number of the liquid inlet holes 106 and the liquid outlet holes 107 is not limited.

In the embodiment shown in fig. 3, more specifically, a first annular groove 3013 is formed on the outer side of the driving shaft 301, a first sealing ring 7 is installed in the first annular groove 3013, and the first sealing ring 7 abuts against the inner wall of the driving hole 102. The first sealing ring 7 can improve the sealing performance between the driving shaft 301 and the inner wall of the driving hole 102, and reduce the foreign matters such as external dust from entering the driving cavity 101, thereby reducing the influence of the foreign matters entering the meshing position of the driving gear 302 and the driven gear 202 on the transmission effect, and reducing the pollution of the foreign matters on the parts such as the rotating shaft 201, the drill bit 4 and the like in the driving cavity 101. In addition, when the cooling liquid is introduced into the liquid inlet area 105 through the liquid inlet hole 106, the first sealing ring 7 can reduce the overflow of the cooling liquid from the driving hole 102, which is beneficial to improving the utilization rate of the cooling liquid and applying sufficient pressure to the drilling surface 401 of the drill bit 4 by the cooling liquid.

For the embodiment shown in fig. 3, more specifically, a second annular groove 2012 is formed outside the rotating shaft 201, a second gasket 8 is installed in the second annular groove 2012, the second gasket 8 abuts against the inner wall of the driving cavity 101, and the second gasket 8 is located on a side of the driving hole 102 away from the drilling opening 103. The second sealing ring 8 can improve the sealing effect, and if foreign matters exist in the area where the driving gear 302 and the driven gear 202 are meshed, the second sealing ring 8 can reduce the foreign matters from entering the installation channel 2011 from the gap between the rotating shaft 201 and the inner wall of the driving cavity 101. Moreover, the second sealing ring 8 can reduce the foreign matters from entering the liquid inlet area 105, and can reduce the coolant from entering between the rotating shaft 201 and the inner wall of the driving cavity 101, which is beneficial to improving the utilization rate of the coolant and ensuring that the coolant provides enough pressure on the surface 401.

In the embodiment shown in fig. 8 and 9, more specifically, the inner wall of the mounting passage 2011 is formed with a stopper groove 2013 extending in the axial direction of the rotary shaft 201, the outer side of the drill 4 is formed with a stopper portion 403 which is inserted into the stopper groove 2013, and the stopper portion 403 is movable along the stopper groove 2013. The limiting groove 2013 can guide the drill bit 4 to move in the axial direction of the installation channel 2011, and can prevent the drill bit 4 from rotating relative to the rotating shaft 201, so that the reliability that the rotating shaft 201 drives the drill bit 4 to rotate is improved.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, as for the system embodiment, since it is substantially similar to the method embodiment, the description is relatively simple, and reference may be made to the partial description of the method embodiment for relevant points.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art to which the present application pertains. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (10)

1. The drilling device for the orthopedics department is characterized by comprising a shell, a first driving piece, a second driving piece and a drill bit;

a driving cavity is formed in the shell, a driving hole communicated with the driving cavity is formed in the side wall of the shell, and a drilling outlet communicated with the driving cavity is formed in the bottom wall of the shell;

the first driving piece is arranged in the driving cavity and comprises a rotating shaft and a driven gear which is formed outside the rotating shaft and surrounds the rotating shaft, a through installation channel is formed in the rotating shaft, and the drill bit is arranged in the installation channel;

the second driving piece comprises a driving shaft and a driving gear formed at one end of the driving shaft, the driving gear extends into the driving cavity from the driving hole, the driving gear is meshed with the driven gear, the driving gear can drive the driven gear to rotate so as to enable the rotating shaft to rotate circumferentially, and the drill bit can rotate circumferentially along with the rotating shaft; the drill bit is axially movable within the mounting channel and is extendable out of the drill outlet.

2. The drilling device as claimed in claim 1, wherein the driving gear is a driving bevel gear and the driven gear is a driven bevel gear.

3. The drilling device for orthopedics department of claim 2, characterized in that, be fixed with first bearing in the drive chamber, first bearing cover is located the rotation axis outside, and first bearing supports the driven bevel gear and deviates from one side of tooth's socket.

4. The drilling device for orthopedics according to claim 2, characterized in that the outer sidewall of the housing forms an annular cylinder surrounding the driving shaft, the annular cylinder forming a connection passage communicating with the driving hole, the driving shaft protruding into the connection passage.

5. The orthopedic drilling device according to claim 4, wherein a second bearing is fixed in the connecting channel, the second bearing is sleeved outside the driving shaft, one end of the driving shaft away from the driving bevel gear forms an abutting portion protruding in the radial direction, and the abutting portion abuts against one side of the second bearing away from the driving bevel gear.

6. The drilling device as claimed in claim 1, wherein a flexible shaft coupling groove is formed at an end of the driving shaft remote from the driving gear.

7. The drilling device as claimed in claim 1, wherein a drilling surface is formed on a side of the drill bit facing away from the drill outlet, a fluid inlet region is formed between the drilling surface and an inner wall of the driving cavity, a fluid inlet hole communicated with the fluid inlet region is formed in a wall of the casing, a fluid inlet channel communicated with the fluid inlet region and the drill outlet is formed in the drill bit, and a fluid outlet hole communicated with the drill outlet is formed in a side wall of the drill outlet.

8. The drilling device for the orthopedics department according to any one of claims 1 to 7, characterized in that, the drive shaft is formed with first annular groove in the outside, install first sealing washer in the first annular groove, first sealing washer butt in the inner wall of drive hole.

9. The drilling device for the orthopedics department according to any one of claims 1 to 7, characterized in that, the outside of rotation axis is formed with second annular groove, install the second sealing washer in the second annular groove, the second sealing washer butt in the inner wall of drive chamber, and the second sealing washer is located the drive hole one side of keeping away from go out the drill way.

10. The drilling device for the orthopedic use according to any one of claims 1 to 7, wherein the inner wall of the mounting channel is formed with a stopper groove extending in the axial direction of the rotating shaft, and an outer side of the drill is formed with a stopper portion insert-fitted into the stopper groove, the stopper portion being movable along the stopper groove.

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