Drill bit protection structure

Abstract

The utility model discloses a drill bit protection structure, which relates to the technical field of orthopedic drilling machines and comprises a drill bit body, and one end of the drill bit body is fixedly connected with a drill rod. One end of the connector is fixedly connected with the end, away from the drill bit body, of the drill rod, and the other end of the connector is connected with a drilling machine; and the protective sleeve is arranged outside the drill rod in a sleeving mode, a mounting assembly is arranged in the protective sleeve, and the protective sleeve is movably connected with the drill rod through the mounting assembly. According to the drill bit protection structure, the protection sleeve is movably installed outside the drill rod, when the drill rod rotates, the protection sleeve is relatively independent, follow-up rotation is limited, the situation that the drill rod rubs and collides with the condyle on the outer side of the thighbone due to the fact that a protection shell is not arranged outside a traditional drill rod, and articular cartilage is damaged is effectively avoided, and the structural design is humanized.

Description

TECHNICAL FIELD

[0001] The utility model relates to orthopedics drilling machine technical field, especially a drill bit protection structure. BACKGROUND

[0002] Anterior Cruciate Ligament (ACL) drilling femoral tunnel is a medical term, usually used in ACL reconstruction surgery. ACL is one of the important ligaments in the knee joint, located between the femur and tibia, responsible for stabilizing the knee joint and limiting its forward movement. When ACL is partially or completely ruptured, ACL reconstruction surgery is usually needed to restore the stability and function of the knee joint. Drilling femur is a crucial step in ACL reconstruction surgery. This process usually includes the following steps: surgical preparation: the patient is usually under general anesthesia or local anesthesia. The surgeon will disinfect the knee joint and prepare for surgery. Incision: the surgeon makes an incision above the patient's knee to access the location of the ACL. Positioning and preparation: the doctor uses special tools and imaging devices, such as arthroscope, to locate the position of the ACL. Next, the doctor will remove the damaged ACL stump and prepare for the implantation of a new graft. Drilling femoral tunnel: this step involves using an orthopedic drill bit to pre-drill a hole in the femur, providing a location and fixation point for the implantation of the graft. This process requires precise operation to ensure that the ACL graft can be firmly connected to the bone. Graft fixation: after completing the pre-drilling of the femoral tunnel, the doctor will insert the selected ACL graft (usually autologous tendon from the patient or other synthetic materials) through this pre-drilled hole, and then fix it with special fixing devices. Postoperative treatment: after the operation is completed, the doctor will provide the patient with necessary postoperative care and rehabilitation plan to ensure the healing and recovery of the ACL graft.

[0003] Among them, when the femoral tunnel is prepared by using the drill bit, since the drill bit connecting rod of the prior art does not have a protective sleeve outside, and in order to ensure that the prepared tunnel is perpendicular to the lateral condyle bone wall of the femur, it is difficult to avoid the outer wall of the drill rod touching the lateral condyle cartilage during drilling. At this time, the drill rod rotates under the drive of the drilling machine, further causing cartilage wear. Therefore, the drill rod structure of the prior art needs to be improved. SUMMARY

[0004] The utility model aims at providing a drill bit protection structure to solve the problems in the above background technology.

[0005] To solve the above problems, the technical scheme adopted by the utility model is as follows:

[0006] A drill bit protection structure comprises

[0007] The drill bit body is fixedly connected with a drill rod at one end;

[0008] The connecting head is fixedly connected with the drill rod at one end away from the drill bit body, and is connected with the drilling machine at the other end;

[0009] The protective sleeve is sleeved on the outside of the drill rod, and is provided with a mounting assembly inside and is movably connected with the drill rod through the mounting assembly.

[0010] Preferably, the protective sleeve is made of plastic.

[0011] Preferably, the mounting assembly comprises a first groove ring and first balls, the first groove ring is fixedly installed on the inner wall of the protective sleeve, and the first balls are movably installed inside the cavity of the first groove ring.

[0012] Preferably, when the protective sleeve is sleeved on the outside of the drill rod, the outer wall of the first ball is in contact with the outer wall of the drill rod.

[0013] Preferably, the upper end of the protective sleeve is fixedly connected with a second groove ring, and the cavity of the second groove ring is movably connected with a plurality of second balls.

[0014] Preferably, the lower end of the protective sleeve is fixedly connected with a third groove ring, and the cavity of the third groove ring is movably connected with a plurality of third balls.

[0015] Compared with the prior art, the present application has the following beneficial effects:

[0016] The protective sleeve is movably installed on the outside of the drill rod, and the protective sleeve is relatively independent when the drill rod rotates, so that the rotation is limited, and the traditional drill rod without a protective shell is avoided, so that the friction and collision between the drill rod and the lateral condyle of the femur are avoided, and the joint cartilage is damaged, and the structure design is humanized. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of a drill bit protection structure;

[0018] Figure 2 It is a partial structure schematic view of a drill bit protection structure;

[0019] Figure 3 It is a local structure schematic view of a drill bit protection structure;

[0020] Figure 4 It is a second groove ring and second ball structure schematic view of a drill bit protection structure;

[0021] Figure 5 It is a third groove ring and third ball structure schematic view of a drill bit protection structure.

[0022] In the figure: 1, drill bit body; 2, drill rod; 3, connecting head; 4, protective sleeve; 5, first groove ring; 6, first ball; 7, second groove ring; 8, second ball; 9, third groove ring; 10, third ball. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] Embodiment one:

[0025] Please refer to Figures 1-5 The utility model discloses a drill bit protection structure, comprising

[0026] Drill bit body 1, one end of drill bit body 1 is fixedly connected with drill rod 2;

[0027] Connecting head 3, one end of connecting head 3 is fixedly connected with the end of drill rod 2 away from drill bit body 1, and the other end of connecting head 3 is connected with a drilling machine;

[0028] Protective sleeve 4, protective sleeve 4 is sleeved on the outside of drill rod 2, and the inside of protective sleeve 4 is provided with an installation assembly, and is movably connected with drill rod 2 through the installation assembly.

[0029] As shown in Figure 1 And Figure 3 As shown in, protective sleeve 4 is made of plastic.

[0030] As can be seen from the above, during use, protective sleeve 4 is made of heat-resistant and lightweight materials, such as plastic, silica gel and the like, before and after use, the staff needs to disinfect protective sleeve 4, specifically, the staff disinfects protective sleeve 4 through high-pressure steam, and the disinfection temperature is 120 DEG, and the time is half an hour.

[0031] Embodiment two:

[0032] Drill bit body 1, one end of drill bit body 1 is fixedly connected with drill rod 2;

[0033] Connecting head 3, one end of connecting head 3 is fixedly connected with the end of drill rod 2 away from drill bit body 1, and the other end of connecting head 3 is connected with a drilling machine;

[0034] Protective sleeve 4, protective sleeve 4 is sleeved on the outside of drill rod 2, and the inside of protective sleeve 4 is provided with an installation assembly, and is movably connected with drill rod 2 through the installation assembly.

[0035] As shown in Figures 1-5As shown, the mounting assembly comprises a first groove ring 5 fixedly installed on the inner wall of the protective sleeve 4 and a plurality of first balls 6 movably installed in the cavity of the first groove ring 5.

[0036] When the protective sleeve 4 is sleeved on the outer wall of the drill rod 2, the outer wall of the first ball 6 is in contact with the outer wall of the drill rod 2.

[0037] The upper end of the protective sleeve 4 is fixedly connected with a second groove ring 7, and the cavity of the second groove ring 7 is movably connected with a plurality of second balls 8.

[0038] The lower end of the protective sleeve 4 is fixedly connected with a third groove ring 9, and the cavity of the third groove ring 9 is movably connected with a plurality of third balls 10.

[0039] The diameter of the drill bit body 1 is set according to the size of the bone tunnel to be drilled, and the outer diameter of the drill rod 2 is smaller than the outer diameter of the drill bit body 1.

[0040] As can be seen from the above, the medical staff sleeves the protective sleeve 4 on the outer wall of the drill rod 2, at this time, the outer wall of the first ball 6 is in contact with the outer wall of the drill rod 2, and the first ball 6 is in contact with the outer wall of the drill rod 2. The protective sleeve 4 is movably installed on the outer wall of the drill rod 2, after installation, the worker connects the connecting head 3 with the end of the drilling machine, then the worker drives the drilling machine to rotate the drill rod 2 and the drill bit body 1, and then drills the femoral tunnel. During drilling, the protective sleeve 4 is movably installed on the outer wall of the drill rod 2, and the protective sleeve 4 does not rotate when the drill rod 2 rotates, effectively avoiding the damage of the bone caused by the friction and collision between the traditional drill rod 2 and the femur without protective shell, and the structure design is humanized.

[0041] Specifically, in order to ensure that the protective sleeve 4 is movably connected with the drill rod 2, the second groove ring 7 and the third groove ring 9 are arranged at both ends of the protective sleeve 4, the second balls 8 are arranged in the second groove ring 7, and the third balls 10 are arranged in the third groove ring 9, so as to ensure the movable connection of the protective sleeve 4 at both ends with the connecting head 3 of the drilling machine and the end of the drill bit body 1.

[0042] The standard parts used in the utility model can be purchased from the market, and the special-shaped parts can be ordered according to the description and the drawings, and the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the existing technology, and the mechanical parts and equipment adopt the conventional type in the existing technology, which will not be described in detail here. The contents not described in detail in the specification all belong to the existing technology known to the professional technicians in the field.

[0043] In the description of the utility model, the terms "first", "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. The meaning of "multiple" is two or more, unless otherwise specifically limited.

[0044] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, or the communication or interaction relationship between 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.

[0045] In the utility model, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0046] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or features of different embodiments or examples described in the specification without conflict.

[0047] The utility model discloses the embodiment in the drawing, only relate to the structure related to the embodiment of the disclosure, other structures can refer to the usual design, under the condition of no conflict, the same embodiment and different embodiments of the application can be combined mutually.

[0048] Although the utility model has been explained in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A drill bit protection structure, characterized by: Comprising A drill bit body (1) is fixedly connected with a drill rod (2) at one end; A connecting head (3) is fixedly connected with the drill rod (2) at one end away from the drill bit body (1), and the other end of the connecting head (3) is connected with a drilling machine; A protective sleeve (4) is sleeved on the outside of the drill rod (2), and an installation assembly is arranged in the inside of the protective sleeve (4) and movably connected with the drill rod (2) through the installation assembly.

2. The drill bit protection structure of claim 1, wherein: The protective sleeve (4) is made of plastic.

3. The drill bit protection structure of claim 1, wherein: The installation assembly comprises a first groove ring (5) and first balls (6), the first groove ring (5) is fixedly installed on the inner wall of the protective sleeve (4), and a plurality of first balls (6) are movably installed in the cavity of the first groove ring (5).

4. The drill bit protection structure of claim 3, wherein: When the protective sleeve (4) is sleeved on the outside of the drill rod (2), the outer wall of the first ball (6) is in contact with the outer wall of the drill rod (2).

5. The drill bit protection structure of claim 1, wherein: A second groove ring (7) is fixedly connected to the upper end of the protective sleeve (4), and a plurality of second balls (8) are movably connected in the cavity of the second groove ring (7).

6. The drill bit protection structure of claim 1, wherein: A third groove ring (9) is fixedly connected to the lower end of the protective sleeve (4), and a plurality of third balls (10) are movably connected in the cavity of the third groove ring (9).

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