CN211749859U

CN211749859U - Skull drill for neurosurgery operation

Info

Publication number: CN211749859U
Application number: CN202020155455.1U
Authority: CN
Inventors: 赵学彬
Original assignee: Peoples Hospital of Leshan
Current assignee: Peoples Hospital of Leshan
Priority date: 2020-02-07
Filing date: 2020-02-07
Publication date: 2020-10-27
Anticipated expiration: 2030-02-07

Abstract

The utility model relates to the technical field of medical equipment, particularly, relate to a cranial drill for neurosurgery. The skull drill comprises a crank and a drill bit, wherein a first connecting female head is arranged at the bottom of the crank, and the skull drill further comprises a limiting device; the limiting device comprises a shell, a main shaft is arranged in the middle of the shell, a connecting male head is arranged at the top of the main shaft, and a second connecting female head is arranged at the bottom of the main shaft; a first limiting plate is arranged on the main shaft, a second limiting plate is arranged at the bottom of the first limiting plate, and an adjusting mechanism for adjusting the position of the second limiting plate is further arranged in the shell. The upper end of the main shaft is connected with the shell through a first bearing, and the lower end of the main shaft is connected with the shell through a second bearing. The utility model discloses a knob adjusts the position of first limiting plate and second limiting plate to realize accurate nimble adjustment skull and bore dark purpose of boring. The use is very convenient, does not need the hospital to purchase the skull drill in addition, can install on current hand skull drill the utility model provides a stop device can bore dark adjustment.

Description

Skull drill for neurosurgery operation

Technical Field

The utility model relates to the technical field of medical equipment, particularly, relate to a cranial drill for neurosurgery.

Background

In neurosurgery, the hand-operated skull drill is very important surgical equipment, and when the existing hand-operated skull drill is used, because the thickness of the skull of each patient is different, a doctor usually judges whether the skull is drilled through by virtue of hand feeling and experience, so that the surgical risk is increased. There is no good solution in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cranial drill for neurosurgery to improve above-mentioned problem. In order to achieve the above purpose, the utility model adopts the following technical scheme:

the application provides a skull drill for neurosurgery, which comprises a crank and a drill bit, wherein a first connecting female head is arranged at the bottom of the crank, and the skull drill further comprises a limiting device; the limiting device comprises a shell, a main shaft penetrates through the middle of the shell, a connecting male head connected with a first connecting female head is arranged at the top of the main shaft, and a second connecting female head is arranged at the bottom of the main shaft; the spindle is sleeved with a first limiting plate, a second limiting plate for limiting the movement distance of the first limiting plate is arranged at the bottom of the first limiting plate, and an adjusting mechanism for adjusting the position of the second limiting plate is further arranged in the shell. The upper end of the main shaft is connected with the shell through a first bearing, and the lower end of the main shaft is connected with the shell through a second bearing.

Optionally, the outside of first limiting plate is provided with the external screw thread, shells inner wall corresponds the position and is provided with the internal thread, external screw thread and internal thread threaded connection.

Optionally, a sleeve is arranged at the bottom of the second limiting plate, a third limiting plate is sleeved on the sleeve, a groove is formed in the outer side of the third limiting plate, a limiting convex strip is arranged at a position, corresponding to the groove, on the inner wall of the shell, and the outer diameter of the third limiting plate is equal to the inner diameter of the shell; the middle part of the second limiting plate is provided with a through hole for the main shaft to pass through, and the sleeve is sleeved on the main shaft.

Optionally, the adjusting mechanism includes a third gear and a first gear sleeved on the first rotating shaft, a ninth gear driving the third gear to rotate, and a knob disposed outside the housing and driving the ninth gear to rotate; a first rack is arranged on the outer side of the sleeve below the third limiting plate and meshed with the first gear; and the two ends of the first rotating shaft are connected with the shell through third bearings. The knob is connected with the third gear through a third connecting rod, and the third connecting rod is rotatably connected with the shell through a seventh bearing.

Optionally, the adjustment mechanism further comprises a fourth gear, a seventh gear and an eighth gear; the fourth gear is meshed with the third gear, the seventh gear is meshed with the fourth gear, and the eighth gear is meshed with the ninth gear; the seventh gear and the eighth gear are both sleeved on the third rotating shaft, the seventh gear is arranged above the eighth gear, the third rotating shaft is further sleeved with a ninth bearing, and the ninth bearing is connected with the shell through a connecting piece. The fourth gear is sleeved on the first connecting rod, and the end part of the first connecting rod is connected with the shell through a fifth bearing.

Optionally, the adjusting mechanism further includes a fifth gear, a sixth gear and a second gear, the fifth gear is disposed between the fourth gear and the sixth gear, two sides of the fifth gear are respectively engaged with the fourth gear and the sixth gear, the sixth gear and the second gear are both sleeved on the second rotating shaft, a second rack is further disposed on the sleeve below the third limiting plate, and the second rack and the first rack are respectively disposed on two sides of the sleeve; the second gear is meshed with a second rack; and the two ends of the second rotating shaft are connected with the shell through fourth bearings. The fifth gear is sleeved on the second connecting rod, and the end part of the second connecting rod is connected with the shell through a sixth bearing.

Optionally, a locking mechanism is further arranged in the housing, the locking mechanism includes a tenth gear, a ratchet wheel, a pawl and a self-locking button, the tenth gear and the ratchet wheel are both sleeved on the fourth rotating shaft, and the tenth gear is engaged with the ninth gear; the bottom of the fourth rotating shaft is connected with the shell through an eighth bearing; the end part of the self-locking button is connected with the pawl, the tenth gear is a helical gear, the ratchet wheel is arranged at the end part of the movement path of the pawl, and when the self-locking button is pressed in, the pawl is meshed with the ratchet wheel.

Optionally, the third gear, the fourth gear, the fifth gear, the sixth gear, the seventh gear, the eighth gear and the ninth gear are all helical gears.

Optionally, a plurality of air holes are formed in the third limiting plate.

Optionally, a transparent window is further arranged on the shell, and transparent glass with scales is arranged in the transparent window.

The utility model has the advantages that:

the utility model discloses a knob adjusts the position of first limiting plate and second limiting plate to realize accurate nimble adjustment skull and bore dark purpose of boring. The use is very convenient, does not need the hospital to purchase the skull drill in addition, can install on current hand skull drill the utility model provides a stop device can bore dark adjustment.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the embodiments of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic view of a crank structure according to an embodiment of the present invention;

fig. 2 is a schematic view of a drill according to an embodiment of the present invention;

fig. 3 is a schematic structural view of the limiting device according to the embodiment of the present invention;

fig. 4 is a schematic sectional view of the structure of the position limiting device according to the embodiment of the present invention;

FIG. 5 is an enlarged cross-sectional view taken along line A-A of FIG. 4;

fig. 6 is an enlarged sectional view at B-B in fig. 4.

The labels in the figure are: 1. a crank; 2. a drill bit; 3. a first connecting female; 4. a second connecting female head; 5. a limiting device; 6. connecting a male head; 7. a perspective window; 8. a self-locking button; 9. a knob; 10. a housing; 11. a first limit plate; 12. an internal thread; 13. a main shaft; 14. limiting convex strips; 15. a second limiting plate; 16. a sleeve; 17. a third limiting plate; 18. air holes are formed; 19. a first bearing; 20. a second bearing; 21. a first gear; 22. a second gear; 23. a first rotating shaft; 24. a second rotating shaft; 25. a third bearing; 26. a fourth bearing; 27. a first rack; 28. a second rack; 29. a third gear; 30. a fourth gear; 31. a fifth gear; 32. a sixth gear; 33. a seventh gear; 34. an eighth gear; 35. a ninth gear; 36. a tenth gear; 37. a ratchet wheel; 38. a fifth bearing; 39. a sixth bearing; 40. a seventh bearing; 41. an eighth bearing; 42. a ninth bearing; 43. a third rotating shaft; 44. a pawl; 45. and a fourth rotating shaft.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.

The embodiment provides a skull drill for neurosurgery, which comprises a crank handle 1 and a drill bit 2, wherein the bottom of the crank handle 1 is provided with a first connecting female head 3, and the skull drill further comprises a limiting device 5; the limiting device 5 comprises a shell 10, a main shaft 13 penetrates through the middle of the shell 10, a connecting male head 6 connected with the first connecting female head 3 is arranged at the top of the main shaft 13, and a second connecting female head 4 is arranged at the bottom of the main shaft 13; the spindle 13 is sleeved with a first limiting plate 11, a second limiting plate 15 limiting the movement distance of the first limiting plate 11 is arranged at the bottom of the first limiting plate 11, and an adjusting mechanism adjusting the position of the second limiting plate 15 is further arranged in the shell 10. The upper end of the main shaft 13 is connected to the housing 10 through a first bearing 19, and the lower end of the main shaft 13 is connected to the housing 10 through a second bearing 20.

Optionally, the outer side of the first limiting plate 11 is provided with an external thread, the inner wall of the housing 10 is provided with an internal thread 12 at a corresponding position, and the external thread is in threaded connection with the internal thread 12.

Optionally, a sleeve 16 is arranged at the bottom of the second limit plate 15, a third limit plate 17 is sleeved on the sleeve 16, a groove is arranged on the outer side of the third limit plate 17, a position, corresponding to the groove, on the inner wall of the casing 10 is provided with a limit protruding strip 14, and the outer diameter of the third limit plate 17 is equal to the inner diameter of the casing 10; the middle part of the second limiting plate 15 is provided with a through hole for the main shaft 13 to pass through, and the sleeve 16 is sleeved on the main shaft 13.

Optionally, the adjusting mechanism includes a third gear 29 and a first gear 21 that are sleeved on the first rotating shaft 23, a ninth gear 35 that drives the third gear 29 to rotate, and a knob 9 that is arranged outside the housing 10 and drives the ninth gear 35 to rotate; a first rack 27 is arranged on the outer side of the sleeve 16 below the third limiting plate 17, and the first rack 27 is meshed with the first gear 21; both ends of the first rotating shaft 23 are connected with the housing 10 through a third bearing 25. The knob 9 is connected to a third gear 29 via a third connecting rod, which is rotatably connected to the housing 10 via a seventh bearing 40.

Optionally, the adjustment mechanism further comprises a fourth gear 30, a seventh gear 33 and an eighth gear 34; the fourth gear 30 is meshed with the third gear 29, the seventh gear 33 is meshed with the fourth gear 30, and the eighth gear 34 is meshed with the ninth gear 35; the seventh gear 33 and the eighth gear 34 are both sleeved on a third rotating shaft 43, the seventh gear 33 is arranged above the eighth gear 34, a ninth bearing 42 is further sleeved on the third rotating shaft 43, and the ninth bearing 42 is connected with the shell 10 through a connecting piece. The fourth gear 30 is sleeved on the first connecting rod, and the end of the first connecting rod is connected to the housing 10 through the fifth bearing 38.

Optionally, the adjusting mechanism further includes a fifth gear 31, a sixth gear 32 and a second gear 22, the fifth gear 31 is disposed between the fourth gear 30 and the sixth gear 32, two sides of the fifth gear 31 are respectively engaged with the fourth gear 30 and the sixth gear 32, the sixth gear 32 and the second gear 22 are both sleeved on the second rotating shaft 24, the sleeve 16 below the third limiting plate 17 is further provided with a second rack 28, and the second rack 28 and the first rack 27 are respectively disposed on two sides of the sleeve 16; the second gear 22 is engaged with a second rack 28; both ends of the second rotating shaft 24 are connected to the housing 10 through fourth bearings 26. The fifth gear 31 is sleeved on the second connecting rod, and the end of the second connecting rod is connected with the housing 10 through a sixth bearing 39.

Optionally, a locking mechanism is further disposed in the housing 10, the locking mechanism includes a tenth gear 36, a ratchet wheel 37, a pawl 44 and a self-locking button 8, the tenth gear 36 and the ratchet wheel 37 are both sleeved on a fourth rotating shaft 45, and the tenth gear 36 is engaged with the ninth gear 35; the bottom of the fourth rotating shaft 45 is connected with the casing 10 through an eighth bearing 41; the end of the latching button 8 is connected to a pawl 44, the tenth gear 36 is a helical gear, the ratchet wheel 37 is arranged at the end of the moving path of the pawl 44, and when the latching button 8 is pressed in, the pawl 44 is engaged with the ratchet wheel 37. When the knob 9 is rotated to reduce the distance between the first stopper plate 11 and the second stopper plate 15, the ratchet wheel 37 is not restricted by the pawl 44, and when the knob 9 is rotated to increase the distance between the first stopper plate 11 and the second stopper plate 15, the ratchet wheel 37 is restricted by the pawl 44. When the reset is needed after the use, the self-locking button 8 is pressed to separate the pawl 44 from the ratchet wheel 37, and the reset effect can be realized.

Optionally, the third gear 29, the fourth gear 30, the fifth gear 31, the sixth gear 32, the seventh gear 33, the eighth gear 34 and the ninth gear 35 are all helical gears.

Optionally, a plurality of ventilation holes 18 are formed in the third limiting plate 17.

Optionally, a transparent window 7 is further disposed on the housing 10, and transparent glass with scales is disposed in the transparent window 7. Through the transparent glass with scales, the moving distance of the bottom of the sleeve 16 can be observed, so that the distance between the first limiting plate 11 and the second limiting plate 15 is obtained, and the purpose of accurately adjusting the drilling depth of the skull drill is achieved.

The utility model discloses when using, through rotatory knob 9, knob 9 drives ninth gear 35 and rotates, ninth gear 35 drives eighth gear 34 and rotates, eighth gear 34 drives seventh gear 33 and rotates, seventh gear 33 drives fourth gear 30 and rotates, fourth gear 30 drives third gear 29 and fifth gear 31 respectively and rotates, third gear 29 drives first gear 21 and rotates, first gear 21 passes through first rack 27, drive sleeve 16 up-and-down motion, fifth gear 31 drives second gear 22 and rotates, second gear 22 passes through second rack 28, drive sleeve 16 up-and-down motion. Adjust the distance between first limiting plate 11 and the second limiting plate 15 to the thickness that just is patient's skull, when rotating crank 1, crank 1 drives main shaft 13 and rotates to first limiting plate 11 descends along with the rotation of main shaft 13, when the bottom of first limiting plate 11 and second limiting plate 15 contact, indicates that the brill depth of drill bit 2 is the same with patient's skull, and crank 1 can't rotate again this moment, thereby prevents that drill bit 2 from continuing to deepen deeply and causing the accident. When the limiting device 5 is not provided with the internal thread 12 structure, the position of the limiting device 5 needs to be fixed by a fixing device, and then the skull drilling is carried out by using the rotating crank 1.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a skull drill for neurosurgery, includes crank (1) and drill bit (2), the bottom of crank (1) is provided with female head of first connection (3), its characterized in that: the skull drill also comprises a limiting device (5); the limiting device (5) comprises a shell (10), a main shaft (13) penetrates through the middle of the shell (10), a connecting male head (6) connected with the first connecting female head (3) is arranged at the top of the main shaft (13), and a second connecting female head (4) is arranged at the bottom of the main shaft (13); a first limiting plate (11) is sleeved on the main shaft (13), a second limiting plate (15) for limiting the movement distance of the first limiting plate (11) is arranged at the bottom of the first limiting plate (11), and an adjusting mechanism for adjusting the position of the second limiting plate (15) is further arranged in the shell (10); the upper end of the main shaft (13) is connected with the shell (10) through a first bearing (19), and the lower end of the main shaft (13) is connected with the shell (10) through a second bearing (20).

2. A cranial drill for neurosurgical operations according to claim 1, wherein: the outside of first limiting plate (11) is provided with the external screw thread, casing (10) inner wall corresponds the position and is provided with internal thread (12), external screw thread and internal thread (12) threaded connection.

3. A cranial drill for neurosurgical operations according to claim 1, wherein: a sleeve (16) is arranged at the bottom of the second limiting plate (15), a third limiting plate (17) is sleeved on the sleeve (16), a groove is formed in the outer side of the third limiting plate (17), a limiting convex strip (14) is arranged on the inner wall of the shell (10) and corresponds to the groove, and the outer diameter of the third limiting plate (17) is equal to the inner diameter of the shell (10); the middle part of the second limiting plate (15) is provided with a through hole for the main shaft (13) to pass through, and the sleeve (16) is sleeved on the main shaft (13).

4. A cranial drill for neurosurgical operations according to claim 3, wherein: the adjusting mechanism comprises a third gear (29) and a first gear (21) which are sleeved on the first rotating shaft (23), a ninth gear (35) which drives the third gear (29) to rotate, and a knob (9) which is arranged on the outer side of the shell (10) and drives the ninth gear (35) to rotate; a first rack (27) is arranged on the outer side of the sleeve (16) below the third limiting plate (17), and the first rack (27) is meshed with the first gear (21); both ends of the first rotating shaft (23) are connected with the shell (10) through third bearings (25); the knob (9) is connected with a third gear (29) through a third connecting rod, and the third connecting rod is rotatably connected with the shell (10) through a seventh bearing (40).

5. A cranial drill for neurosurgery according to claim 4, characterized in that: the adjusting mechanism further comprises a fourth gear (30), a seventh gear (33) and an eighth gear (34); the fourth gear (30) meshes with the third gear (29), the seventh gear (33) meshes with the fourth gear (30), the eighth gear (34) meshes with the ninth gear (35); the seventh gear (33) and the eighth gear (34) are sleeved on a third rotating shaft (43), the seventh gear (33) is arranged above the eighth gear (34), a ninth bearing (42) is further sleeved on the third rotating shaft (43), and the ninth bearing (42) is connected with the shell (10) through a connecting piece; the fourth gear (30) is sleeved on the first connecting rod, and the end part of the first connecting rod is connected with the shell (10) through a fifth bearing (38).

6. A cranial drill for neurosurgery according to claim 5, characterized in that: the adjusting mechanism further comprises a fifth gear (31), a sixth gear (32) and a second gear (22), the fifth gear (31) is arranged between the fourth gear (30) and the sixth gear (32), two sides of the fifth gear (31) are respectively meshed with the fourth gear (30) and the sixth gear (32), the sixth gear (32) and the second gear (22) are both sleeved on the second rotating shaft (24), a second rack (28) is further arranged on the sleeve (16) below the third limiting plate (17), and the second rack (28) and the first rack (27) are respectively arranged on two sides of the sleeve (16); the second gear (22) is meshed with a second rack (28); both ends of the second rotating shaft (24) are connected with the shell (10) through fourth bearings (26); the fifth gear (31) is sleeved on the second connecting rod, and the end part of the second connecting rod is connected with the shell (10) through a sixth bearing (39).

7. A cranial drill for neurosurgery according to claim 4, characterized in that: a locking mechanism is further arranged in the shell (10), the locking mechanism comprises a tenth gear (36), a ratchet wheel (37), a pawl (44) and a self-locking button (8), the tenth gear (36) and the ratchet wheel (37) are sleeved on a fourth rotating shaft (45), and the tenth gear (36) is meshed with the ninth gear (35); the bottom of the fourth rotating shaft (45) is connected with the shell (10) through an eighth bearing (41); the end of the self-locking button (8) is connected with a pawl (44), the tenth gear (36) is a helical gear, the ratchet wheel (37) is arranged at the end of the moving path of the pawl (44), and when the self-locking button (8) is pressed in, the pawl (44) is meshed with the ratchet wheel (37).

8. A cranial drill for neurosurgery according to claim 6, characterized in that: the third gear (29), the fourth gear (30), the fifth gear (31), the sixth gear (32), the seventh gear (33), the eighth gear (34) and the ninth gear (35) are all helical gears.

9. A cranial drill for neurosurgical operations according to claim 3, wherein: the third limiting plate (17) is provided with a plurality of air holes (18).

10. A cranial drill for neurosurgical operations according to claim 1, wherein: still be provided with perspective window (7) on casing (10), be provided with the transparent glass who has the scale in perspective window (7).