Positive and negative use bone drill

Abstract

The utility model belongs to the technical field of bone drills, and relates to a forward and reverse use bone drill. The tool bit is rotatably connected to one end of the drill rod; a containing space used for containing the operation section is formed in the handle, and the handle is further provided with a first containing groove and a second containing groove which are both communicated with the containing space. The clamping part is provided with a clamping hole, the operation section penetrates through the clamping hole, the pressing part is contained in the first containing groove, and the clamping cover is switched between the pressing state that the operation section slides in the clamping hole and the abutting position that the inner wall of the clamping hole abuts against the operation section. Failure of the clamping cover and disintegration of the bone drill due to forward and reverse use caused by rotation of the clamping cover are prevented; the elastic piece is contained in the second containing groove, one end of the elastic piece makes contact with the clamping cover, the other end of the elastic piece makes contact with the bottom wall of the second containing groove, and therefore the elastic piece is prevented from making direct contact with the drill rod, the axial movement friction force of the drill rod is reduced, the tool bit overturning precision is maintained, and the surgical risk of a patient is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to bone drill technical field especially relates to a positive and negative use bone drill. BACKGROUND

[0002] When the human knee joint anterior and posterior cruciate ligament injury, need to use the bone drill to drill the bone tunnel at the bone end, implantation of graft repair.

[0003] In the prior art, the positive and negative use bone drill controls the opening and closing of the inner rod limiting assembly through the button on the handle, so that the axial movement of the inner rod of the bone drill is realized, and the rotation of the cutter head installed on the inner rod is further controlled to a specific angle. However, in the prior art, there are many components to realize the above control process, and each is a separate structure. During the use and transportation of the bone drill, the button is prone to failure, and even the bone drill is eventually disassembled. In addition, the button in the prior art realizes the rebound of the spring, but the spring is usually in direct contact with the axial movement component. When the doctor needs to adjust the angle of the cutter head during the operation, the direct contact between the spring and the axially moving inner rod will increase the friction of the inner rod, affect the rotation accuracy of the cutter head, and the patient has the risk of operation. SUMMARY

[0004] The utility model provides a kind of positive and negative use bone drill, to solve the technical problems that bone drill control component is more, and the failure of bone drill in use and transportation process caused by separate structure, and the rotation accuracy of cutter head is influenced by too large axial movement friction.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] Provide a kind of positive and negative use bone drill, comprising:

[0007] Drill rod, the operation section is arranged between the both ends of the drill rod;

[0008] Cutter head, the cutter head is rotatably connected to one end of the drill rod;

[0009] Handle, the handle is internally provided with containing space for containing the operation section, the handle is further provided with first containing groove and second containing groove, which are in communication with the containing space, the first containing groove and the second containing groove are coaxially arranged, and the second containing groove is located on the side of the first containing groove close to the containing space;

[0010] The cap includes a pressing part and a clamping part, the clamping part is located on one side of the pressing part close to the drill rod, and the pressing part and the clamping part are integrally formed, the clamping part is provided with a clamping hole, the operation section passes through the clamping hole, the pressing part is accommodated in the first accommodating groove, and the cap can be switched between a pressing state in which the operation section slides in the clamping hole and an abutting position in which the inner wall of the clamping hole abuts against the operation section.

[0011] The elastic member is accommodated in the second accommodating groove, one end of the elastic member is in contact with the cap, and the other end is in contact with the bottom wall of the second accommodating groove.

[0012] Preferably, the clamping part is further provided with a first clamping groove in communication with the clamping hole, and the operation section is provided with a second clamping groove matched with the first clamping groove in shape, and the first clamping groove and the second clamping groove are mutually buckled when the cap is in the abutting position.

[0013] Preferably, the operation section is provided with two second clamping grooves parallel and spaced apart along the sliding direction of the operation section, and the tool bit is at a first set angle relative to the drill rod when one of the two second clamping grooves is mutually buckled with the first clamping groove, and the tool bit is at a second set angle relative to the drill rod when the other of the two second clamping grooves is mutually buckled with the first clamping groove.

[0014] Preferably, the drill rod includes a first sliding rod and a second sliding rod slidably connected to each other, and the operation section is arranged on the second sliding rod.

[0015] Preferably, the forward-reverse use bone drill further includes a connecting piece, one of the first sliding rod and the second sliding rod is provided with an oblong hole extending along the sliding direction of the operation section, and the other is provided with a first connecting hole matched with the oblong hole, and the connecting piece passes through the first connecting hole and the oblong hole to realize the sliding connection of the first sliding rod and the second sliding rod.

[0016] Preferably, the handle is further provided with a mounting hole through which the connecting piece passes, and the connecting piece passes through the mounting hole and the first connecting hole to fix the first sliding rod to the handle.

[0017] Preferably, the cap is further provided with a third accommodating groove, one end of the elastic member is in contact with the bottom wall of the third accommodating groove, and the other end is in contact with the bottom wall of the second accommodating groove.

[0018] Preferably, the handle is further provided with a sliding groove for moving the clamping part, and the outer contour of the clamping part is matched with the inner contour of the sliding groove.

[0019] The utility model discloses a beneficial effect:

[0020] The utility model provides a positive and negative use bone drill, through setting up the clamping portion of the clamping cover at the side of pressing portion close to the drill rod, and the pressing portion and the clamping portion are integrally formed structure, set up the clamping hole on the clamping portion, and the operating section of drill rod passes through the clamping hole, and the pressing portion is contained in the first containing groove, and the clamping cover can switch between the pressing state of operating section sliding in the clamping hole and the abutting position of the inner wall of clamping hole abutting operating section, thereby reducing the component quantity required to control bone drill bit rotation, simplifying positive and negative use bone drill structure, in the process of using and transporting positive and negative use bone drill, because the clamping cover is provided with the clamping portion, can prevent the loose rotation of clamping cover, even the clamping cover failure leads to positive and negative use bone drill disassembly, in addition, through the elastic piece containing in the second containing groove, one end of elastic piece contacts with the clamping cover, and the other end contacts with the bottom wall of second containing groove, thereby preventing elastic piece from contacting directly with drill rod, reducing drill rod shaft friction, maintaining the precision of bit overturning, and further reducing the risk of patient operation. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the structure schematic diagram of the positive and negative use bone drill provided by the utility model,

[0022] Figure 2 It is the exploded schematic diagram of the positive and negative use bone drill provided by the utility model,

[0023] Figure 3 It is the structure schematic diagram of the handle provided by the utility model,

[0024] Figure 4 It is the structure schematic diagram of the clamping cover provided by the utility model,

[0025] Figure 5 It is the partial cutaway view of the positive and negative use bone drill provided by the utility model.

[0026] In the drawing,

[0027] 1, drill rod, 11, second clamping groove, 12, first sliding rod, 121, long waist hole, 13, second sliding rod, 131, first connecting hole,

[0028] 2, bit,

[0029] 3, handle, 31, containing space, 32, first containing groove, 33, second containing groove, 34, mounting hole, 35, sliding groove, 36, antiskid surface,

[0030] 4, clamping cover, 41, pressing portion, 42, clamping portion, 421, clamping hole, 422, first clamping groove, 43, third containing groove,

[0031] 5, elastic piece,

[0032] 6. The connecting piece. DETAILED DESCRIPTION

[0033] The utility model will be explained in further detail below in connection with the drawings and embodiments. It can be understood that the specific embodiments described herein are merely for the purpose of explaining the utility model and not limiting the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for the purpose of description, not all the structures.

[0034] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0035] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0036] In the description of the embodiment, the terms "upper", "lower", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the purpose of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0037] The utility model will be explained in further detail below in connection with the drawings and embodiments. It can be understood that the specific embodiments described herein are merely for the purpose of explaining the utility model and not limiting the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for the purpose of description, not all the structures. Figures 1 to 5 The utility model provides a bone drill for positive and negative use is introduced in detail.

[0038] Figure 1 The structure diagram of the bone drill for positive and negative use provided by the embodiment is shown, Figure 2 The exploded view of the bone drill for positive and negative use provided by the embodiment is shown, Figure 3A structural schematic diagram of the handle 3 provided by the embodiment is shown, Figure 4 A structural schematic diagram of the cover 4 provided by the embodiment is shown. As Figures 1 to 4 The bone drill provided by the embodiment includes a drill rod 1, a drill head 2, a handle 3, a cover 4 and an elastic member 5. The drill rod 1 is provided with an operation section between two ends thereof. The drill head 2 is rotatably connected to one end of the drill rod 1. The handle 3 is internally provided with an accommodation space 31 for accommodating the operation section. The handle 3 is further provided with a first accommodation groove 32 and a second accommodation groove 33, both of which are in communication with the accommodation space 31. The first accommodation groove 32 and the second accommodation groove 33 are coaxially arranged, and the second accommodation groove 33 is located on the side of the first accommodation groove 32 close to the accommodation space 31. The cover 4 includes a pressing portion 41 and a clamping portion 42. The clamping portion 42 is located on the side of the pressing portion 41 close to the drill rod 1. The pressing portion 41 and the clamping portion 42 are integrally formed. The clamping portion 42 is provided with a clamping hole 421. The operation section passes through the clamping hole 421. The pressing portion 41 is accommodated in the first accommodation groove 32. The cover 4 can be switched between a pressing state in which the operation section slides in the clamping hole 421 and an abutting position in which the inner wall of the clamping hole 421 abuts against the operation section. The elastic member 5 is accommodated in the second accommodation groove 33. One end of the elastic member 5 is in contact with the cover 4, and the other end is in contact with the bottom wall of the second accommodation groove 33. When the cover 4 is in the abutting position, the elastic member 5 is in a free state. Specifically, the drill rod 1 includes a first slide rod 12 and a second slide rod 13 which are slidably connected to each other. The operation section is arranged on the first slide rod 12. The rotation of the drill head 2 is realized by the sliding between the first slide rod 12 and the second slide rod 13. The drill head 2 is provided with a fixing hole and a through groove. One end of the first slide rod 12 is provided with a second connecting hole. The first slide rod 12 is rotatably connected to the drill head 2 by the cooperation between the second connecting hole and the fixing hole through the first locking member. One end of the second slide rod 13 is provided with a third connecting hole. The second slide rod 13 is slidably connected to the drill head 2 by the cooperation between the third connecting hole and the through groove through the second locking member. When the first slide rod 12 and the second slide rod 13 slide relative to each other, the drill head 2 rotates to realize the overturning of the drill head 2.

[0039] The bone drill provided by the embodiment is used reversely, the clamping portion 42 of the clamping cover 4 is arranged on the pressing portion 41 close to the drill rod 1, the pressing portion 41 and the clamping portion 42 are integrally formed, the clamping hole 421 is arranged on the clamping portion 42, the operation section of the drill rod 1 passes through the clamping hole 421, the pressing portion 41 is accommodated in the first accommodating groove 32, the clamping cover 4 can be switched between the pressing state that the operation section slides in the clamping hole 421 and the abutting position that the inner wall of the clamping hole 421 abuts against the operation section, thereby reducing the number of components required for controlling the rotation of the drill head 2, simplifying the structure of the bone drill used reversely, and preventing the clamping cover 4 from rotating loosely or even disintegrating due to the failure of the clamping cover 4 during the use and transportation of the bone drill used reversely. In addition, the elastic member 5 is accommodated in the second accommodating groove 33, one end of the elastic member 5 is in contact with the clamping cover 4, and the other end is in contact with the bottom wall of the second accommodating groove 33, thereby preventing the elastic member 5 from directly contacting the drill rod 1, reducing the friction force of the drill rod 1, maintaining the flipping accuracy of the drill head 2, and further reducing the risk of surgery for patients.

[0040] Figure 5 A partial cross-sectional view of the bone drill used reversely is shown in FIG. 1. Figures 4 to 5 As shown in FIG. 1, the clamping portion 42 is further provided with a first clamping groove 422 which is in communication with the clamping hole 421, and the operation section is provided with a second clamping groove 11 which is matched with the first clamping groove 422 in shape. When the clamping cover 4 is in the abutting position, the first clamping groove 422 and the second clamping groove 11 are mutually engaged, thereby preventing the clamping cover 4 from being not stable enough in clamping the operation section of the drill rod 1 when the drill head 2 of the bone drill used reversely is at a specific angle relative to the drill rod 1 for drilling a bone tunnel, causing the drill rod 1 to slide, and further causing the angle of the drill head 2 relative to the drill rod 1 to change, and finally causing the drill head 2 to shake and cause secondary injury to the patient.

[0041] Preferably, the operation section is provided with two second clamping grooves 11 which are parallel and spaced apart along the sliding direction of the operation section. When the clamping cover 4 is in the abutting position, the first clamping groove 422 and one of the two second clamping grooves 11 are mutually engaged, thereby enabling the drill head 2 to maintain a specific angle with the drill rod 1 when the first clamping groove 422 and one of the second clamping grooves 11 are mutually engaged. When one of the two second clamping grooves 11 and the first clamping groove 422 are mutually engaged, the drill head 2 is at a first set angle relative to the drill rod 1, and when the other of the two second clamping grooves 11 and the first clamping groove 422 are mutually engaged, the drill head 2 is at a second set angle relative to the drill rod 1, enabling the drill head 2 to quickly switch between two commonly used bone tunnel drilling angles and limiting the maximum rotation angle of the drill head 2. It should be noted that the first set angle can be 0°, and the second set angle can be 90°, thereby enabling the drill head 2 of the bone drill used reversely to switch between 0° and 90° relative to the drill rod 1 when the first clamping groove 422 is switched between the two second clamping grooves 11.

[0042] Preferably, the handle 3 is further provided with a cutter head pointing mark, when the cutter head 2 is at the first set angle relative to the drill rod 1, the cutter head pointing mark points to the same direction as the cutter head 2, so as to remind the staff that the actual pointing direction of the cutter head 2 in the bone channel is at the first set angle, preventing the staff from misjudging the actual pointing direction of the cutter head 2; similarly, when the cutter head 2 is at the second set angle relative to the drill rod 1, the cutter head pointing mark points to the same direction as the cutter head 2, so as to remind the staff that the actual pointing direction of the cutter head 2 in the bone channel is at the second set angle, preventing the staff from misjudging the actual pointing direction of the cutter head 2.

[0043] As shown in Figures 1 to 5 , the reversible bone drill further comprises a connecting piece 6, one of the first slide rod 12 and the second slide rod 13 is provided with an oblong hole 121 extending along the sliding direction of the operation section, and the other is provided with a first connecting hole 131 matched with the oblong hole 121, the connecting piece 6 passes through the first connecting hole 131 and the oblong hole 121 to realize the sliding connection of the first slide rod 12 and the second slide rod 13, so as to simplify the structure to assemble the drill rod 1, thereby improving the assembly accuracy of the drill rod 1, reducing the axial friction of the first slide rod 12, and ensuring the flipping accuracy of the cutter head 2. Specifically, the connecting piece 6 is a pin, and the first connecting hole 131 is a through hole, and the pin passes through the through hole and the oblong hole 121 to realize the sliding connection of the first slide rod 12 and the second slide rod 13.

[0044] Preferably, the handle 3 is further provided with a mounting hole 34 through which the connecting piece 6 passes, and the connecting piece 6 passes through the mounting hole 34 and the first connecting hole 131 to fix the first slide rod 12 to the handle 3, thereby simplifying the difficulty of installing the drill rod 1 to the handle 3, so as to quickly replace the drill rod 1.

[0045] As shown in Figures 3 to 5 , the cover 4 is further provided with a third accommodating groove 43, one end of the elastic piece 5 is in contact with the bottom wall of the third accommodating groove 43, and the other end is in contact with the bottom wall of the second accommodating groove 33, this structure can accommodate part of the elastic piece 5 in the cover 4, thereby reducing the length of the cover 4 protruding from the plane of the handle 3, and achieving the purpose of reducing the centrifugal force during the rotation of the cutter head 2, so as to maintain the flipping accuracy of the cutter head 2 and reduce the risk of patient surgery.

[0046] As shown in Figures 1 to 5 , the handle 3 is further provided with a sliding groove 35 for the movement of the clamping part 42, and the inner contour of the sliding groove 35 matches the outer contour of the clamping part 42, when the cover 4 is switched between the pressing position and the abutting position, due to the limitation of the sliding groove 35, the movement of the clamping part 42 in the sliding groove 35 is more stable, thereby ensuring that the cover 4 only moves linearly and cannot rotate, thereby ensuring that the cover 4 will not fail and cause the reversible bone drill to disassemble.

[0047] In some embodiments, the handle 3 is also provided with an anti-skid surface 36, which can increase the friction when a hand holds the handle 3, so that the worker can hold the bone drill tightly and prevent the bone drill from falling to the ground and being damaged.

[0048] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application.

[0049] For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of the present application. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent substitution and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application claims.

Claims

1. A reversible bone drill, characterized by, The utility model relates to a drill rod (1) is provided with operation section between both ends, the cutter head (2) rotatable connection in one end of drill rod (1), handle (3) is provided with containing space (31) for containing operation section inside, handle (3) is provided with first containing groove (32) and second containing groove (33) all with containing space (31) intercommunication, first containing groove (32) and second containing groove (33) coaxial arrangement, second containing groove (33) is located in first containing groove (32) near containing space (31) one side, the utility model relates to the cap (4) including pressing portion (41) and clamping portion (42), clamping portion (42) is located in pressing portion (41) near drill rod (1) one side, and pressing portion (41) and clamping portion (42) are integrally formed structure, and clamping portion (42) is provided with clamping hole (421), and operation section passes through clamping hole (421), and pressing portion (41) is contained in first containing groove (32), and cap (4) can be switched between the pressing state of operation section in the sliding of clamping hole (421) and the abutting position of the inner wall of clamping hole (421) abut operation section, The utility model relates to the elastic piece (5) is contained in second containing groove (33), one end of elastic piece (5) is in contact with cap (4), and the other end is in contact with the bottom wall of second containing groove (33), and when cap (4) is in abutting position, elastic piece (5) is free state. The utility model relates to the first clamping groove (422) of being provided with with clamping hole (421) intercommunication on clamping portion (42), and the second clamping groove (11) of being provided with with first clamping groove (422) shape matching on operation section, when cap (4) is in abutting position, first clamping groove (422) and second clamping groove (11) are mutually buckled. The utility model relates to the operation section along its own sliding direction parallel and interval and be provided with two second clamping grooves (11), when one of two second clamping grooves (11) and first clamping groove (422) are mutually buckled, the cutter head (2) relative drill rod (1) is first set angle, when another of two second clamping grooves (11) and first clamping groove (422) are mutually buckled, the cutter head (2) relative drill rod (1) is second set angle. The utility model relates to drill rod (1) including first slide rod (12) and second slide rod (13) sliding connection with each other, and operation section is arranged on second slide rod (13). ​ 2. The right-left reversible bone drill according to claim 1, wherein, ​ 3. The right-left reversible bone drill according to claim 2, wherein, ​ 4. The right-angle contra-angled drill of claim 1 wherein, ​ 5. The right-angle contra-angled drill according to claim 4, wherein, The bone drill is provided with a connecting piece (6), one of the first slide rod (12) and the second slide rod (13) is provided with an oblong hole (121) extending along the sliding direction of the operation section, the other is provided with a first connecting hole (131) matched with the oblong hole (121), the connecting piece (6) passes through the first connecting hole (131) and the oblong hole (121) to realize the sliding connection of the first slide rod (12) and the second slide rod (13).

6. The right-angle contra-angled drill according to claim 5, wherein, The handle (3) is further provided with a mounting hole (34) through which the connecting piece (6) passes, the connecting piece (6) passes through the mounting hole (34) and the first connecting hole (131) to fix the first slide rod (12) to the handle (3).

7. The right-angle contra-angled drill of claim 1 wherein, The cover (4) is further provided with a third accommodating groove (43), one end of the elastic piece (5) is in contact with the bottom wall of the third accommodating groove (43), and the other end is in contact with the bottom wall of the second accommodating groove (33).

8. The right-angle contra-angled drill according to any one of claims 1 to 7, wherein, The handle (3) is further provided with a sliding groove (35) for the movement of the clamping part (42), and the outer contour of the clamping part (42) is matched with the inner contour of the sliding groove (35).

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