A drilling device for establishing a bone tunnel

Abstract

A drilling device for establishing a bone tunnel, characterized in that it comprises a handle, a driving device arranged in the handle, a first fixing rod for fixing the driving device, a linkage rod connected to one end of the driving device, an outer rod shell sleeved outside the linkage rod, a drill, a second fixing rod for fixing the drill, and a guide rod. Since the angle of the drill can be adjusted according to the required bone tunnel diameter, bone tunnels of different diameters or variable diameters can be obtained; at the same time, the depth of the bone tunnel can be determined according to the scale on the outer rod shell; this makes orthopedic reconstruction surgery simpler and can also reduce the pain of patients.

Description

Technical Field

[0001] The invention relates to a drilling device for establishing a bone tunnel. Background Art

[0002] Usually in reconstruction surgeries such as ligaments, it is necessary to drill a tunnel in the bone to place the anchor of the graft. The bone marrow drill currently used in reconstruction surgeries such as ligaments can only drill bone tunnels of the same diameter, which cannot meet the needs of narrow bone tunnels on both sides and wide in the middle or multiple bone tunnels with different diameters. More surgeries or more complicated surgeries can only be performed to compensate, causing patients to endure more pain and take greater risks. Summary of the invention

[0003] In view of this, the technical problem solved by the present invention is to provide a drilling device for establishing a bone tunnel.

[0004] The technical means adopted by the present invention is to adopt a drilling device for establishing a bone tunnel, which includes a handle, a driving device arranged in the handle, a first fixing rod for fixing the driving device, a linkage rod connected to one end of the driving device, an outer rod shell sleeved on the outside of the linkage rod, a drill bit, a second fixing rod for fixing the drill bit and a guide rod.

[0005] As an optional solution, the handle includes a handle body, a button arranged on the handle body and an elastic member arranged in the button, and the handle body also includes a first fixing hole opened on both sides, the first fixing hole is used to place a first fixing rod, and the button is used to control the driving device to adjust the direction of the drill bit.

[0006] As an optional solution, the driving device includes a driving rod installed in the handle body and a locking bolt sleeved on the driving rod, one end of the driving rod extends out of the handle body, and the locking bolt is U-shaped.

[0007] As an optional solution, the drive rod is provided with a plurality of concave snap-in grooves near the button position, and a drive hole passing through the drive rod. The concave snap-in grooves are used to snap-in to the snap-in bolt. The U-shaped bottom of the snap-in bolt is snapped in the concave snap-in grooves, and the U-shaped top of the snap-in bolt is connected to the inner side of the button.

[0008] As an optional solution, the driving rod includes a rod head extending out of the handle body, the rod head is marked with scales, the scales on the rod head are used to confirm the drill bit adjustment angle, and the number of scales on the rod head is equal to the number of concave positioning grooves.

[0009] As an optional solution, the inner wall of the button is provided with a positioning ring groove, and two plug-in interfaces are provided at the edge of the positioning ring groove;

[0010] The locking bolt comprises a locking bottom locked in the concave locking groove and fixed arms on both sides, the two fixed arms are arranged in the elastic member, and the two ends of the fixed arms are folded outward to have connecting parts, and the two connecting parts extend into the positioning ring groove through the plug interface;

[0011] The top wall of the button is provided with two first marking lines corresponding to the insertion interface, and the top wall of the handle body is provided with two second marking lines corresponding to the connecting portion.

[0012] As an optional solution, the size of the first fixing rod is equal to the size of the first fixing hole. The first fixing rod enters from the first fixing hole on one side of the handle body, passes through the driving hole on the driving rod, and reaches the first fixing hole on the other side of the handle body, thereby fixing the driving rod. The first fixing rod can move in the driving hole, thereby enabling the driving rod to move axially relative to the handle body.

[0013] As an optional solution, the linkage rod includes a first clamping groove opened at one end away from the handle body and avoidance openings arranged on both sides of the first clamping groove, and guide holes opened on both sides of the top of the linkage rod 40 for connecting with the drill bit.

[0014] As an optional solution, the outer rod shell includes a second clamping groove opened at one end away from the handle body and second fixing holes opened on both sides of the second clamping groove, and the size of the first clamping groove is the same as that of the second clamping groove.

[0015] As an optional solution, the outer rod shell is also provided with a first scale for measuring the depth of the bone tunnel.

[0016] As an optional solution, the drill bit includes a third fixing hole opened on one side and an arc-shaped hole opened next to the third fixing hole. The second fixing rod enters from one of the second fixing holes, passes through the third fixing hole, and passes through the other second fixing hole. The second fixing rod passes through the avoidance opening and the second fixing rod can move on the avoidance opening. The guide rod enters from one of the guide fixing holes, passes through the arc-shaped hole, and passes through the other guide fixing hole.

[0017] The technical effect of the present invention is as follows: since the angle of the drill bit can be adjusted according to the required bone tunnel diameter, bone tunnels of different diameters can be obtained; at the same time, the depth of the bone tunnel can be determined according to the scale on the outer rod shell; orthopedic reconstruction surgery is made simpler and the pain of patients can be alleviated. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of a drilling device for establishing a bone tunnel according to an embodiment of the present invention.

[0019] Figure 2 for Figure 1 An enlarged schematic view of the drill end of a punching device for creating a bone tunnel is shown.

[0020] Figure 3 for Figure 1 The schematic diagram of the partial cross section of the punching device for establishing a bone tunnel is shown.

[0021] Figure 4 for Figure 1 Schematic diagram of the explosion of the punching device for establishing the bone tunnel.

[0022] Figure 5 for Figure 1 An enlarged schematic diagram of another perspective of the drill end of the drilling device for establishing a bone tunnel is shown.

[0023] Figure 6 for Figure 1 An exploded schematic diagram of another perspective of the punching device for establishing a bone tunnel is shown.

[0024] Figure 7 for Figure 1 An enlarged cross-sectional view of the drill end of a drilling device for establishing a bone tunnel is shown.

[0025] Figure 8 for Figure 1 An enlarged view of some components of a punching device for creating a bone tunnel is shown. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiment of the technical scheme will be clearly and completely described below in conjunction with the drawings in the embodiment of the technical scheme. Obviously, the described embodiment is only a part of the embodiment of the technical scheme, not all of the embodiments. Based on the embodiments in the technical scheme, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the technical scheme. It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a centering element at the same time. When an element is considered to be "set on" another element, it can be directly set on the other element or there may be a centering element at the same time.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the technical solution belongs. The terms used herein in the specification of the technical solution are only for the purpose of describing specific embodiments and are not intended to limit the technical solution. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0028] In conjunction with the accompanying drawings, some implementation methods of the present technical solution are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0029] See also Figures 1 to 8 The technical solution embodiment provides a drilling device 100 for establishing a bone tunnel, which is used in orthopedic transplantation surgery. The drilling device 100 for establishing a bone tunnel includes a handle 10, a driving device 20, a first fixing rod 30, a linkage rod 40, an outer rod shell 50, a drill bit 70, a second fixing rod 60 and a guide rod 80. The interior of the handle 10 is hollow, the driving device 20 passes through the interior of the handle 10, the first fixing rod 30 is used to fix the driving device 20 on the handle 10, one end of the linkage rod 40 is connected to the driving device 20, the outer rod shell 50 is connected to one end of the handle 10 and is sleeved on the outside of the linkage rod 40, the outer rod shell 50 is hollow inside and sleeved outside the linkage rod 40; the second fixing rod 60 fixes the drill bit 70 to the end of the outer rod shell 50 away from the handle 10.

[0030] The handle 10 includes a handle body 11, a button 13 disposed on the handle body, and an elastic member (not shown) disposed in the button 13, and the elastic member can be configured as a compression spring. The handle body 11 is hollow inside, and the handle body 11 also includes first fixing holes 111 opened on both sides, and the first fixing holes 111 are used to place the first fixing rod 30, and the button 13 is used to control the driving device 20 to adjust the direction of the drill bit 70.

[0031] The driving device 20 includes a driving rod 21 installed in the handle body 11 and a locking bolt 23 sleeved on the driving rod 21. The driving rod 21 also includes a concave locking groove 211 opened on the driving rod 21 near the button 13 and a driving hole 213 passing through the driving rod 21. The concave locking groove 211 is used to lock the locking bolt 23.

[0032] The bottom of the latch bolt 23 is engaged with the driving rod 21, and the top is fixed to the button 13. The inner wall of the button 13 is provided with a positioning ring groove 132, and two insertion ports 131 are provided at the edge of the positioning ring groove 132. The latch bolt 23 is generally U-shaped, and includes a latch bottom 231 that is latched in the concave latch groove 211 and fixed arms 233 on both sides, and the two fixed arms 233 are arranged in the elastic member. The two ends of the fixed arms 233 are folded outward to form connecting parts 234.

[0033] To facilitate the installation of the locking bolt, a bottom cover is provided at the bottom of the handle body 11. During assembly, the locking bolt 23 is first opened upward and installed from bottom to top, so that the two fixed arms 233 wrap the axial sides of the driving rod 21, and the buckle bottom 231 is buckled in the concave locking groove 211, and the fixed arm 233 extends out of the top of the handle body 11. The buckle bottom 231 is pressed with the hand to fix the locking bolt; then, the compression spring is sleeved on the outer wall of the fixed arm 233, and then the two plug interfaces of the button 13 are respectively matched with the connecting part 234, so that the connecting part 234 enters the positioning ring groove 132 through the plug interface 131, and the button 13 is rotated so that the connecting part 234 is misaligned with the plug interface 131, that is, the fixation of the button 13 is achieved, and finally the two bottom covers are glued and fixed to the bottom of the handle body 11.

[0034] Furthermore, in order to reduce the occurrence of the button 13 falling off during use, the button 13 also includes two second marking lines 1311 marked on the top wall, and the second marking lines 1311 and the center line of the plug-in port 131 are in the same plane, that is, the position of the second marking lines 1311 corresponds to the position of the plug-in port 131. At the same time, the top wall of the handle body 11 is also marked with two first marking lines 1111, and the first marking lines 1111 and the center line of the connecting portion 234 are in the same plane, that is, the marking lines 1111 correspond to the two connecting portions 234 of the locking bolt 23. When the two second marking lines 1311 are aligned with the two first marking lines 1111, the two connecting portions 234 can extend into the positioning ring groove 131 through the plug-in port 131, and then the button 13 is rotated to make the second marking lines 1311 misaligned with the two first marking lines 111, that is, the connecting portion 234 is misaligned with the plug-in port 131, so as to achieve the fixation of the locking bolt 23 and the button 13. The setting of the first marking line 1111 and the second marking line 1311 greatly improves the assembly efficiency of the button, and can also reduce the occurrence of the button falling off due to the misrotation of the button 13, which causes the plug interface to correspond to the connecting part, thereby improving the stability of the punching device in use.

[0035] On the other hand, since the punching device is generally used as a disposable medical product, in order to prevent secondary use, the operation can be reversed during postoperative treatment to remove the button 13: rotate the button 13, the first marking line 1111 corresponds to the second marking line 1311, the button 13 is ejected by the compressed spring, and the button 14 is separated from the locking bolt 23. At this time, since there is no limitation of the button 13, the bottom of the locking bolt is separated from the concave locking groove 211, and the buckle bottom 231 enters the bottom cover space; since the bottom cover is not removable after one installation, the buckle bottom 231 cannot be supported by hands or other tools, the bottom of the locking bolt 23 is not subjected to force, the connecting portion 234 of the locking bolt sinks, and the connecting portion 234 cannot enter the positioning ring groove through the plug interface, that is, the knob 13 cannot be installed normally, thereby realizing the irreversible assembly of the button 13 and preventing medical waste from being assembled and used again.

[0036] The driving rod 21 includes a rod head 215 extending out of the handle body 11, and the rod head 215 is marked with scales (not shown), and the scales of the rod head 215 are used to confirm the adjustment angle of the drill bit 70. In this embodiment, the rod head 215 is marked with only two scales, and the driving rod 21 is also provided with only two concave slots 211. In other embodiments, the rod head 215 may be provided with multiple scales, and the driving rod 21 may also be provided with multiple concave slots 211, and the number of scales on the rod head 215 is equal to the number of the concave slots 211.

[0037] The size of the first fixing rod 30 is substantially equal to the size of the first fixing hole 111. The first fixing rod 30 enters from the first fixing hole 111 on one side of the handle body 11, passes through the driving hole 213 on the driving rod 21, and reaches the first fixing hole 111 on the other side of the handle body 11, thereby fixing the driving rod 21. The first fixing rod 30 can move in the driving hole 213, thereby enabling the driving rod 21 to move axially relative to the handle body 11.

[0038] The linkage rod 40 includes a first clamping groove 41 opened at one end away from the handle body 11, avoidance openings 43 opened on both sides of the first clamping groove 41 and guide holes 45 opened on both sides of the top of the linkage rod 40. The bottom of the first clamping groove 41 is inclined and inclined toward the side where the avoidance opening 43 is provided.

[0039] The outer rod shell 50 includes a second clamping groove 51 opened at one end away from the handle body 11 and second fixing holes 53 opened on both sides of the second clamping groove 51. The size of the first clamping groove 41 is the same as that of the second clamping groove 51. The outer rod shell 50 is also provided with a first scale 55 for measuring the depth of the bone tunnel. Preferably, a positioning ring can be set on the outer rod shell, which can be made of a rubber ring, for positioning the depth of the pre-drilling hole, so as to facilitate stopping after drilling to a specified depth during surgery. The drill bit 70 includes a third fixing hole 71 opened on one side and an arc hole 73 opened next to the third fixing hole 71. The second fixing rod 60 enters from one of the second fixing holes 53, passes through the third fixing hole 71, and passes through the other second fixing hole 53. The second fixing rod 60 passes through the avoidance 43 and the second fixing rod 60 can move on the avoidance 43. The guide rod 80 enters from one of the guide fixing holes 45, passes through the arc hole 73, and passes through the other guide fixing hole 45.

[0040] When the drill bit 70 is adjusted to an angle of 0 degrees, the diameter of the bone tunnel drilled by the drill bit 70 is the smallest, and the diameter of the bone tunnel is roughly equal to the width of the drill bit 70, and the drill bit 70 needs to be clamped in parallel in the first clamping groove 41 and the second clamping groove 53 of the linkage rod 40; when the drill bit 70 is adjusted to an angle of 90 degrees, the diameter of the bone tunnel drilled by the drill bit 70 is the largest, and the diameter of the bone tunnel is roughly equal to the length of the drill bit 70, and the drill bit 70 will be vertically clamped in the first clamping groove 41 and the second clamping groove 53 of the linkage rod 40. When adjusting the angle of the drill bit 70, it is necessary to first confirm the scale position of the rod head 215 corresponding to this angle, and then press and hold the button 13, the elastic member is compressed, and the buckle bottom 231 is disengaged from the concave locking groove 211. At this time, the protruding part of the rod head 215 is moved to the marked scale of the rod head 215, which drives the linkage rod 40 to move and the second fixed rod 60 to move in the arc hole 73, so that the drill bit 70 is adjusted to the required angle; then release the button 13, and the elastic member pushes the button 13 away from the driving rod 21 under the action of its own elastic restoring force. Since the button 13 is fixed to the locking bolt 23, the button 13 drives the buckle bottom 231 of the locking bolt 23 to move toward the driving rod 21 until the buckle bottom 231 is buckled in the concave locking groove 211 corresponding to the linkage rod 40, and the position of the driving rod is fixed.

[0041] In this embodiment, the angle of the drill bit 70 can be adjusted according to the required diameter of the bone tunnel, so as to obtain bone tunnels of different diameters; at the same time, the depth of the bone tunnel can be determined according to the scale on the outer rod shell 50, making orthopedic reconstruction surgery simpler and also alleviating the pain of patients.

[0042] It is understandable that a person skilled in the art can make other corresponding changes and modifications based on the technical concept of the present invention, and all these changes and modifications should fall within the protection scope of the claims of the present invention.

Claims

1. A drilling device for establishing a bone tunnel, characterized in that: The drill bit comprises a handle, a driving device arranged in the handle, a first fixing rod for fixing the driving device, a linkage rod connected to one end of the driving device, an outer rod shell sleeved on the outside of the linkage rod, a drill bit, a second fixing rod for fixing the drill bit and a guide rod, the handle comprises a handle body, a button arranged on the handle body and an elastic member arranged in the button, the handle body also comprises first fixing holes opened on both sides, the first fixing holes are used to place the first fixing rod, the button is used to control the driving device to adjust the direction of the drill bit, the driving device comprises a driving rod arranged in the handle body and a clamp sleeved on the driving rod The driving rod has a U-shaped locking bolt, one end of the driving rod extends out of the handle body, and the locking bolt is U-shaped; the driving rod is provided with a plurality of concave locking grooves near the button position, and a driving hole penetrating the driving rod is provided, the concave locking grooves are used to buckle the locking bolt, the U-shaped bottom of the locking bolt is clamped in the concave locking groove, and the U-shaped top of the locking bolt is connected to the inner side of the button, the driving rod includes a rod head extending out of the handle body, the rod head is marked with scales, the scales on the rod head are used to confirm the adjustment angle of the drill bit, and the number of scales on the rod head is equal to the number of concave locking grooves, and the outer rod shell is also provided with a first scale for measuring the depth of the bone tunnel.

2. The drilling device for establishing a bone tunnel according to claim 1, characterized in that: The inner wall of the button is provided with a positioning ring groove, and the edge of the positioning ring groove is provided with two plug-in interfaces; The locking bolt comprises a locking bottom locked in the concave locking groove and fixed arms on both sides, the two fixed arms are arranged in the elastic member, and the two ends of the fixed arms are folded outward to have connecting parts, and the two connecting parts extend into the positioning ring groove through the plug interface; The top wall of the button is provided with two first marking lines corresponding to the insertion interface, and the top wall of the handle body is provided with two second marking lines corresponding to the connecting portion.

3. The drilling device for establishing a bone tunnel according to claim 1, characterized in that: The size of the first fixing rod is equal to the size of the first fixing hole. The first fixing rod enters from the first fixing hole on one side of the handle body, passes through the driving hole on the driving rod, and reaches the first fixing hole on the other side of the handle body, thereby fixing the driving rod. The first fixing rod can move in the driving hole, thereby enabling the driving rod to move axially relative to the handle body.

4. The drilling device for establishing a bone tunnel according to claim 1, characterized in that: The linkage rod comprises a first clamping groove arranged at one end away from the handle body, avoidance openings arranged at both sides of the first clamping groove, and guide holes arranged at both sides of the top end of the linkage rod for connecting with a drill bit.

5. The drilling device for establishing a bone tunnel according to claim 4, characterized in that: The outer rod shell includes a second clamping groove opened at one end away from the handle body and second fixing holes opened on both sides of the second clamping groove. The size of the first clamping groove is the same as that of the second clamping groove.

6. The drilling device for establishing a bone tunnel according to claim 5, characterized in that: The drill bit includes a third fixing hole opened on one side and an arc-shaped hole opened next to the third fixing hole. The second fixing rod enters from one of the second fixing holes, passes through the third fixing hole, and passes through the other second fixing hole. The second fixing rod passes through the avoidance opening and the second fixing rod can move on the avoidance opening. The guide rod enters from one of the guide fixing holes, passes through the arc-shaped hole, and passes through the other guide fixing hole.

Images