Bone drill with depth measuring function

Abstract

The utility model relates to the technical field of orthopedic medical instruments, in particular to a bone drill with a depth measuring function, which comprises a bone drill body, a mounting box is fixedly connected to the left side wall of the bone drill body, a first through hole is formed in the left side wall of the mounting box in a penetrating manner, and the bone drill body drives a mounting rod and a drill bit to rotate. The bone drill body is pushed to move leftwards, the drill bit moves into the bone, meanwhile, the abutting ring is matched with the connecting cylinder to push the measuring plate to move rightwards, the measuring plate drives the first observation plate to move, and in the moving process of the first observation plate, the distance between the right side wall of the first observation plate and the zero graduation line of the measuring line is the real-time drilling depth. The drilling depth is monitored in real time until the right side wall of the measuring plate abuts against the left side wall of the positioning plate, at the moment, the drilling depth is just the appropriate depth, meanwhile, the measuring plate is blocked through the positioning plate, and the situation that the fixing effect is affected due to the fact that the hole depth is not enough or too large is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to orthopedics medical instrument technical field, concretely is a bone drill with depth measurement function. BACKGROUND

[0002] Bone drill is used for drilling hole on the bone (including skull, knee bone, spine bone etc.) in surgical operation, needs to carry out steel plate fixation to the bone in operation, and the screw hole of steel plate must penetrate the bone, therefore needs to use bone drill to drill hole to the bone to facilitate operation operation.

[0003] The existing bone drill cannot carry out real -time detection to the depth of drilling hole, can only through the bone drill drilling hole, then measures the depth of hole through the measuring tool to select the appropriate screw, and the drilling depth is generally estimated according to the experience of doctor, and there is the condition of insufficient depth, needs secondary drilling, increases the operation time, and the operation effect is influenced, and there can also be the condition of excessive hole depth and the influence of fixing effect. SUMMARY

[0004] The utility model discloses a kind of bone drills with depth measurement function, with the characteristics of real-time detection to the depth of drilling hole, avoid hole depth not enough or hole depth too big.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of bone drill with depth measurement function, including bone drill body, the left side wall of the bone drill body is fixedly connected with installation box, the left side wall of the installation box is penetrated and is equipped with first through-hole, the inside of the installation box is slidably connected with the measuring plate and the positioning plate distributed left and right respectively, the side wall of the measuring plate and the positioning plate is penetrated and is equipped with second through-hole, the left side wall of the measuring plate is in abutment with the left inner side wall of installation box, the left side wall of the measuring plate is fixedly connected with the connection barrel of open structure front end, the other end of the connection barrel passes through first through-hole and extends to the left side of installation box, the other end of the connection barrel is fixedly connected with abutment ring;

[0006] The upper end surface of the installation box is penetrated and is equipped with notch, the upper end surface of the measuring plate and the positioning plate is fixedly connected with first observation board and second observation board respectively, the other end of the first observation board and the second observation board is passed through notch and extends to the upper of installation box, the upper end surface of the installation box is provided with measuring line, the zero scale line of the measuring line is located at the left side of the upper end surface of installation box and is flush with the right side wall of first observation board;

[0007] The output end of the bone drill body is fixedly connected with the installation rod in the inside of installation box, the other end of the installation rod passes through two second through-holes and first through-hole and extends to the left side of installation box, the other end of the installation rod is detachably connected with drill bit.

[0008] In order to fix the positioning plate, as a kind of bone drill with depth measurement function preferred by the utility model, the lower end surface of the installation box is provided with sliding hole, the lower end surface of the positioning plate is fixedly connected with fixed screw rod, the lower end of the fixed screw rod passes through the sliding hole and extends to the lower side of the installation box, the outer wall of the fixed screw rod is threadedly connected with fixed block located below the installation box.

[0009] In order to limit the measurement plate and the positioning plate, as a kind of bone drill with depth measurement function preferred by the utility model, the front and rear inner side walls of the installation box are provided with sliding groove, the front and rear end surfaces of the measurement plate and the positioning plate are respectively fixedly connected with first sliding block and second sliding block respectively matched with two sliding grooves.

[0010] In order to facilitate the installation and dismounting of the drill bit, as a kind of bone drill with depth measurement function preferred by the utility model, the right end of the drill bit is fixedly connected with connecting screw rod, the left end of the installation rod is provided with threaded groove threadedly connected with the connecting screw rod.

[0011] In order to accurately monitor the real-time depth of drilling during drilling, as a kind of bone drill with depth measurement function preferred by the utility model, the left side wall of the abutment ring is flush with the left end of the drill bit.

[0012] In order to make the measurement plate stop stably at any position in the installation box, the two first sliding blocks are tightly and slidably connected with the two sliding grooves.

[0013] Compared with the prior art, the utility model has the advantages of the following:

[0014] The second observation plate drives the positioning plate to move, so that the left side wall of the second observation plate is flush with one of the measurement lines, at this time, the distance between the left side wall of the second observation plate and the zero scale line of the measurement line is the depth of the required drilling, so as to adjust and limit the depth of the required drilling.

[0015] The bone drill body drives the installation rod and the drill bit to rotate, drilling is carried out through the drill bit, at the same time of drilling, the bone drill body is pushed to move leftward, so that the drill bit moves into the bone, at the same time, the abutment ring drives the measurement plate to move rightward through the cooperation of the connecting cylinder, the measurement plate drives the first observation plate to move, in the movement process of the first observation plate, the distance between the right side wall of the first observation plate and the zero scale line of the measurement line is the real-time drilling depth, so as to monitor the drilling depth in real time, until the right side wall of the measurement plate abuts against the left side wall of the positioning plate, at this time, the drilling depth is just the appropriate depth, at the same time, the measurement plate is blocked by the positioning plate, so as to avoid that the hole depth is insufficient or too large, which affects the fixing effect. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1The whole structure schematic view of the utility model;

[0017] Fig. 2 The front view sectional structure schematic view of the utility model;

[0018] Fig. 3 The top view sectional structure schematic view of the utility model;

[0019] In the figure: 1, bone drill body;2, installation box;3, first through hole;4, measuring plate;5, positioning plate;6, second through hole;7, connecting cylinder;8, abutment ring;9, notch;10, first observation plate;11, second observation plate;12, measuring line;13, mounting rod;14, drill bit;15, sliding hole;16, fixed screw;17, fixed block;18, sliding groove;19, first sliding block;20, second sliding block;21, connecting screw;22, screw groove. DETAILED DESCRIPTION

[0020] In order to make the utility model purposes, technical scheme and advantages more clearly, following combining with the drawing and example, the utility model is further detailedly explained.The specific example described here is merely used to explain the utility model, and is not used to limit the utility model.In the description of the utility model, it is understood that the orientation or position relation indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" is based on the orientation or position relation shown in the drawing, and is merely for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.In addition, in the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise explicitly and specifically limited.

[0021] Please refer to Figs. 1 to 3 A bone drill with depth measuring function, including bone drill body 1, the left side wall of bone drill body 1 is fixedly connected with installation box 2, the left side wall of installation box 2 is through first through hole 3, the inside of installation box 2 is slidably connected with left and right distribution measuring plate 4 and positioning plate 5 respectively, the side wall of measuring plate 4 and positioning plate 5 is through second through hole 6, the left side wall of measuring plate 4 is in abutment with the left inner side wall of installation box 2, the left side wall of measuring plate 4 is fixedly connected with the connecting cylinder 7 of open structure front end, the other end of connecting cylinder 7 passes through first through hole 3 and extends to the left side of installation box 2, the other end of connecting cylinder 7 is fixedly connected with abutment ring 8;

[0022] The upper end surface of the mounting box 2 is provided with a notch 9, the upper end surfaces of the measuring plate 4 and the positioning plate 5 are fixedly connected with a first observation plate 10 and a second observation plate 11 respectively, the other ends of the first observation plate 10 and the second observation plate 11 pass through the notch 9 and extend above the mounting box 2, and the upper end surface of the mounting box 2 is provided with measuring lines 12, the zero scale line of the measuring lines 12 is located on the left side of the upper end surface of the mounting box 2 and is flush with the right side wall of the first observation plate 10.

[0023] The output end of the bone drill body 1 is fixedly connected with a mounting rod 13 located inside the mounting box 2, the other end of the mounting rod 13 passes through the two second through holes 6 and the first through hole 3 and extends to the left side of the mounting box 2, and the other end of the mounting rod 13 is detachably connected with a drill bit 14.

[0024] In the embodiment: in use, first, the position of the positioning plate 5 is adjusted according to the required drilling depth, when adjusting, the second observation plate 11 is pushed, the second observation plate 11 drives the positioning plate 5 to move, so that the left side wall of the second observation plate 11 is flush with one of the measuring lines 12, at this time, the distance between the left side wall of the second observation plate 11 and the zero scale line of the measuring line 12 is the required drilling depth, and then the positioning plate 5 is fixed through the cooperation between the fixed block 17 and the fixed screw 16, so that the position of the positioning plate 5 is prevented from changing, thereby preventing the drilling depth from changing.

[0025] Then the drill bit 14 is aligned with the position of the required drilling, at the same time, the abutting ring 8 abuts against the bone around the position of the required drilling (note that after use, the left side wall of the measuring plate 4 must be ensured to abut against the left inner side wall of the mounting box 2), and then the bone drill body 1 is started, the bone drill body 1 drives the mounting rod 13 to rotate, the mounting rod 13 drives the drill bit 14 to rotate, drilling is carried out through the drill bit 14, at the same time of drilling, the bone drill body 1 is pushed to move to the left, so that the drill bit 14 moves into the bone, at the same time, the abutting ring 8 cooperates with the bone around the position of the required drilling to move to the right, at the same time of moving, the abutting ring 8 cooperates with the connecting barrel 7 to push the measuring plate 4 to move to the right, the measuring plate 4 drives the first observation plate 10 to move, in the moving process of the first observation plate 10, the distance between the right side wall of the first observation plate 10 and the zero scale line of the measuring line 12 is the real-time drilling depth, thereby the drilling depth is monitored in real time, until the right side wall of the measuring plate 4 abuts against the left side wall of the positioning plate 5, at this time, the drilling depth is just the appropriate depth, at the same time, the measuring plate 4 is blocked by the positioning plate 5, so that the hole depth is prevented from being insufficient or excessive, thereby affecting the fixing effect.

[0026] As a technical optimization scheme of the utility model, the lower end surface of the mounting box 2 is provided with a sliding hole 15, the lower end surface of the positioning plate 5 is fixedly connected with a fixed screw 16, the lower end of the fixed screw 16 passes through the sliding hole 15 and extends below the mounting box 2, and the outer wall of the fixed screw 16 is threadedly connected with a fixed block 17 located below the mounting box 2.

[0027] In the embodiment, when the positioning plate 5 is fixed, the fixed block 17 is rotated, the upper end surface of the fixed block 17 is abutted with the lower end surface of the mounting box 2, and then the positioning plate 5 is fixed through the cooperation between the fixed block 17 and the fixed screw 16, so that the position of the positioning plate 5 is prevented from being changed, and the drilling depth is prevented from being changed.

[0028] As a technical optimization scheme of the utility model, the front and rear inner side walls of the mounting box 2 are provided with sliding grooves 18, and the front and rear end surfaces of the measuring plate 4 and the positioning plate 5 are respectively fixedly connected with first sliding blocks 19 and second sliding blocks 20 matched with the two sliding grooves 18 respectively.

[0029] In the embodiment, the two sliding grooves 18 cooperate with the two first sliding blocks 19 and the two second sliding blocks 20 to limit the measuring plate 4 and the positioning plate 5 and enable the measuring plate 4 and the positioning plate 5 to move stably.

[0030] As a technical optimization scheme of the utility model, the right end of the drill bit 14 is fixedly connected with a connecting screw 21, and the left end of the mounting rod 13 is provided with a threaded groove 22 threadedly connected with the connecting screw 21.

[0031] In the embodiment, the connecting screw 21 and the threaded groove 22 are cooperated with each other, so that the drill bit 14 is conveniently installed and dismounted.

[0032] It should be noted that the installation thread direction of the connecting screw 21 and the threaded groove 22 is opposite to the rotating direction of the mounting rod 13 and the drill bit 14, so that the friction force between the drill bit 14 and the bone during drilling is prevented from causing the drill bit 14 to loosen.

[0033] As a technical optimization scheme of the utility model, the left side wall of the abutment ring 8 is flush with the left end of the drill bit 14.

[0034] In the embodiment, the left side wall of the abutment ring 8 is flush with the left end of the drill bit 14, so that the real-time drilling depth during drilling can be accurately monitored.

[0035] As a technical optimization scheme of the utility model, the two first sliding blocks 19 are tightly and slidably connected with the two sliding grooves 18.

[0036] In the embodiment, the two first sliding blocks 19 are tightly and slidably connected with the two sliding grooves 18, so that the measuring plate 4 can be stably stopped at any position in the mounting box 2.

[0037] Working principle: in use, first, adjust the position of the positioning plate 5 according to the required drilling depth, when adjusting, push the second observation plate 11, the second observation plate 11 drives the positioning plate 5 to move, so that the left side wall of the second observation plate 11 is flush with one of the measuring lines 12, at this time, the distance between the left side wall of the second observation plate 11 and the zero scale line of the measuring line 12 is the required drilling depth, and then the drilling depth is adjusted and limited, then the positioning plate 5 is fixed through the cooperation between the fixed block 17 and the fixed screw 16, so as to prevent the position of the positioning plate 5 from changing and causing the drilling depth to change;

[0038] Then align the drill bit 14 with the position of the required drilling, at the same time, the abutment ring 8 abuts against the bone around the position of the required drilling, then start the bone drill body 1, the bone drill body 1 drives the mounting rod 13 to rotate, the mounting rod 13 drives the drill bit 14 to rotate, drilling is carried out through the drill bit 14, at the same time of drilling, push the bone drill body 1 to move left, so that the drill bit 14 moves into the bone, at the same time, the abutment ring 8 cooperates with the bone around the position of the required drilling to move right, at the same time of moving, the abutment ring 8 cooperates with the connecting cylinder 7 to push the measuring plate 4 to move right, the measuring plate 4 drives the first observation plate 10 to move, in the moving process of the first observation plate 10, the distance between the right side wall of the first observation plate 10 and the zero scale line of the measuring line 12 is the real-time drilling depth, so as to carry out real-time monitoring on the drilling depth, until the right side wall of the measuring plate 4 abuts against the left side wall of the positioning plate 5, at this time, the drilling depth is just the appropriate depth, at the same time, the measuring plate 4 is blocked by the positioning plate 5, so as to avoid that the hole depth is not enough or the hole depth is too large, which affects the fixing effect.

[0039] The above is only a preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A bone drill having a depth measuring function, comprising a bone drill body (1), characterized in that: The left side wall of the bone drill body (1) is fixedly connected with a mounting box (2), a first through hole (3) is formed through the left side wall of the mounting box (2), the inner side of the mounting box (2) is slidably connected with left and right measuring plates (4) and positioning plates (5), respectively, the left side wall of the measuring plate (4) is in abutment with the left inner side wall of the mounting box (2), the left side wall of the measuring plate (4) is fixedly connected with a connecting cylinder (7) with an open structure at the front end, the other end of the connecting cylinder (7) extends to the left side of the mounting box (2) through the first through hole (3), and the other end of the connecting cylinder (7) is fixedly connected with an abutment ring (8). A notch (9) is formed through the upper end face of the mounting box (2), the upper end faces of the measuring plate (4) and the positioning plate (5) are fixedly connected with first and second observation plates (10) and (11), respectively, the other ends of the first and second observation plates (10) and (11) extend above the mounting box (2) through the notch (9), the upper end face of the mounting box (2) is provided with a measuring line (12), and the zero scale line of the measuring line (12) is located on the left side of the upper end face of the mounting box (2) and flush with the right side wall of the first observation plate (10). The output end of the bone drill body (1) is fixedly connected with a mounting rod (13) located inside the mounting box (2), the other end of the mounting rod (13) extends to the left side of the mounting box (2) through the two second through holes (6) and the first through hole (3), and the other end of the mounting rod (13) is detachably connected with a drill bit (14).

2. The bone drill with depth measurement function according to claim 1, characterized in that: The lower end face of the mounting box (2) is formed through a sliding hole (15), the lower end face of the positioning plate (5) is fixedly connected with a fixed screw rod (16), the lower end of the fixed screw rod (16) extends below the mounting box (2) through the sliding hole (15), and the outer wall of the fixed screw rod (16) is threadedly connected with a fixed block (17) located below the mounting box (2).

3. The bone drill with depth measurement function according to claim 1, characterized in that: The front and rear inner side walls of the mounting box (2) are provided with sliding grooves (18), and the front and rear end faces of the measuring plate (4) and the positioning plate (5) are fixedly connected with first and second sliding blocks (19) and (20) matched with the two sliding grooves (18), respectively.

4. The depth measuring bone drill according to claim 1, wherein: The right end of the drill bit (14) is fixedly connected with a connecting screw rod (21), and the left end of the mounting rod (13) is provided with a threaded groove (22) threadedly connected with the connecting screw rod (21).

5. The depth measuring bone drill according to claim 1, wherein: The left side wall of the abutment ring (8) is flush with the left end of the drill bit (14).

6. The depth measuring bone drill according to claim 3, wherein: The two first sliding blocks (19) are in close sliding connection with the two sliding grooves (18).

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