Disposable sterile steering drill bit

Abstract

The utility model discloses a disposable sterile steering drill bit which comprises a steering sleeve, a drill bit body is placed in one end of the steering sleeve, a transmission rod is placed in the other end of the steering sleeve, one end of the transmission rod extends out of the steering sleeve, and a handle is fixedly connected to the extending position of the transmission rod. A locking assembly is arranged at the position, close to the handle, of the steering sleeve and used for fixing connection between the transmission rod and the steering sleeve. A first taper gear is arranged on the end face of the end, close to the drill bit, of the transmission rod, a second taper gear is arranged on the end face of the end, close to the transmission rod, of the drill bit, the bevel gears are meshed with each other, and the transmission rod and the drill bit are fixedly connected through meshing transmission between the first taper gear and the second taper gear. According to the utility model, the detachable design is adopted, the selection and assembly of various drill bit specifications are facilitated, the use is convenient, the connection structure is simple and firm, the operation is convenient, and the transmission ratio of transmission forces generated by the transmission of the handle is 1: 1, so that the force of the handle can be manually controlled, and the risk of cross infection is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of spinal medical instruments, in particular to a disposable sterile steering drill. Background Art

[0002] In spinal fusion surgery, traditional methods such as straight, high-speed drills are used to drill holes in the vertebrae before screwing in the screws. The use of traditional drills has the following problems and disadvantages: sterilization is required in advance, which is time-consuming, prolongs the overall operation time, and easily misses the best time for treatment; in cases where drilling holes at specific angles is required, the accuracy of the operation is limited, and the size of the patient's incision needs to be increased; there is a problem of incomplete sterilization and disinfection, which may lead to the risk of cross-infection; it is heavy and not easy to carry. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a disposable sterile steering drill bit, which has a detachable design, is convenient for selection and assembly of various drill bit specifications, is easy to use, has a simple and firm connection structure, is easy to operate, has a transmission ratio of 1:1, and the force can be manually controlled, reducing the risk of cross infection. In order to achieve the above-mentioned purpose and other advantages according to the utility model, a disposable sterile steering drill bit is provided, including:

[0004] A steering sleeve, wherein a drill bit is placed in one end of the steering sleeve and a transmission rod is placed in the other end. One end of the transmission rod extends out of the steering sleeve, and a handle is fixedly connected to the extension of the transmission rod;

[0005] A locking assembly is provided near the handle of the steering sleeve, and the locking assembly is used to fix the connection between the transmission rod and the steering sleeve;

[0006] A first tapered gear is provided on the end surface of the transmission rod close to one end of the drill bit, and a second tapered gear is provided on the end surface of the drill bit close to the transmission rod. The first tapered gear and the second tapered gear are meshed with each other, and the transmission rod and the drill bit are fixedly connected through the meshing between the first tapered gear and the second tapered gear.

[0007] Preferably, the steering sleeve includes a straight section, a steering section integrally connected to the straight section, and a button connecting section integrally connected to one end of the straight section away from the steering section. An exposure hole is provided at the connection between the straight section and the steering section, and the exposure hole exposes the first conical gear of the moving rod and the second conical gear of the drill bit.

[0008] Preferably, the locking assembly includes a button, a spring arranged at the bottom of the button and a limit strip for limiting the displacement of the button, wherein a through hole is opened in the middle of the button, and the diameter of the through hole is larger than the diameter of the transmission rod.

[0009] Preferably, the button connecting portion is provided with a placement interval, which is used to place the button in the locking assembly, the limit strip is located at the upper end inside the placement interval, and the two ends of the limit strip pass through the button and are fixed on the placement interval; the spring is located at the lower end inside the placement interval.

[0010] Preferably, a first slot and a second slot are provided on the transmission rod. When the transmission rod is placed in the first slot, the transmission rod is separated from the drill bit. At this time, the drill bit can be taken out from the steering sleeve and the drill bit of multiple specifications can be replaced. When the drill bit is in use, the transmission rod is placed in the second slot for locking.

[0011] Compared with the prior art, the utility model has the following beneficial effects: through the detachable design, it is convenient to select and assemble a variety of drill specifications, and it is easy to use. The transmission of the drill bit adopts a bevel gear connection, the connection structure is simple and firm, the operation is convenient, the transmission ratio generated by the transmission is 1:1, and the force can be manually controlled. The drill bit and the handle can be designed at a specific angle, with the characteristics of high surgical precision, and can achieve minimally invasive surgery with smaller wounds. The pre-sterilized packaging is sterile, which reduces the risk of cross infection and is beneficial to protecting the health of doctors and patients. The lightweight design and the handle are made of high-molecular and high-strength materials, which are convenient to form an instrument package with other lightweight tools and are easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the disposable sterile steering drill according to the utility model;

[0013] Figure 2 A half-section diagram of a disposable sterile steering drill according to the utility model;

[0014] Figure 3 It is a schematic diagram of the three-dimensional structure of the disposable sterile steering drill bit used in combination with the positioning tool according to the utility model. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] Reference Figure 1-3A disposable sterile steering drill comprises: a steering sleeve 3, a drill bit 1 is placed in one end of the steering sleeve 3, and a transmission rod 2 is placed in the other end, one end of the transmission rod 2 extends from the steering sleeve 3, and a handle 5 is fixedly connected to the extension of the transmission rod 2; a locking assembly is provided near the handle 5 of the steering sleeve 3, and the locking assembly is used to fix the connection between the transmission rod 2 and the steering sleeve 3; a first tapered gear is provided on the end face of the transmission rod 2 near the drill bit 1, and a second tapered gear is provided on the end face of the drill bit 1 near the transmission rod 2, the first tapered gear and the second tapered gear are meshed with each other, and the transmission rod 2 and the drill bit 1 are connected. The first conical gear and the second conical gear are mutually meshed and fixedly connected; when in use, the steering sleeve 3 and the transmission rod 2 are movable through the locking assembly. At this time, the transmission rod 2 is driven to move toward the handle 5 by pulling the handle 5. At this time, according to the specifications of the implanted screw, the drill bit 1 of the corresponding specification is selected, and the drill bit 1 is placed in one end of the steering sleeve 3. At this time, the handle 5 is pulled to drive the transmission rod 2 to move away from the handle 5, so that one end of the transmission rod 2 is meshed with one end of the drill bit 1. At this time, the drill bit 1 and the transmission rod 2 are fixedly connected. At this time, the locking assembly is released, and the steering sleeve 3 and the transmission rod 2 are fixedly connected. Then the drill bit 1 is placed in the matching positioning tool sleeve to achieve accurate positioning of the drill bit. When holding the handle 5 and rotating it clockwise, the drill bit 1 can be gradually screwed into the surgical site required by the vertebral body to achieve the purpose of drilling. It is ensured that each use of the drill bit 1 is performed under sterile conditions, which effectively avoids the risk of cross infection. In addition, the disposable use of the drill bit 1 reduces the need for cleaning and disinfection of the instrument, further reduces the risk of infection, and also improves surgical efficiency.

[0017] The handle 5 is made of high-molecular and high-strength material, which is convenient for forming an instrument bag with other lightweight tools and is easy to carry.

[0018] Furthermore, the steering sleeve 3 includes a straight section, a steering section integrally connected to the straight section, and a button connection section integrally connected to one end of the straight section away from the steering section. An exposure hole is provided at the connection between the straight section and the steering section, and the exposure hole exposes the first tapered gear of the transmission rod 2 and the second tapered gear of the drill bit 1. Because the tapered gear 1 of the transmission rod 2 and the tapered gear 2 of the drill bit 1 are exposed, when assembling the transmission rod 2 and the drill bit 1, it can be clearly seen whether the assembly between the transmission rod 2 and the drill bit 1 is completed.

[0019] Furthermore, the locking assembly includes a button 4, a spring disposed at the bottom of the button 4, and a limit bar for limiting the displacement of the button 4, wherein a through hole is provided in the middle of the button 4, and the diameter of the through hole is larger than the diameter of the transmission rod 2. The button connection portion is provided with a placement interval, and the placement interval is used to place the button 4 in the locking assembly. The limit bar is located at the upper end of the placement interval, and the two ends of the limit bar penetrate the button 4 and are fixed on the placement interval; the spring is located at the lower end of the placement interval. The transmission rod 2 is provided with a first card slot and a second card slot. When the transmission rod 2 is placed in the first card slot, the transmission rod 2 is separated from the drill bit 1. At this time, the drill bit 1 can be taken out of the steering sleeve 3 to replace the drill bit 1 with multiple specifications; when the drill bit 1 is in use, the transmission rod 2 is placed in the second card slot for locking. When the transmission rod 2 and the drill bit 1 are in a connected state, the button 4 is in a relaxed state, and the bottom of the button 4 near the spring is located in the second card slot, so that the steering sleeve 3 and the transmission rod 2 are fixedly connected, and the button 4 protrudes from the button connection portion. When the transmission rod 2 needs to be displaced, when the button 4 is pressed to the position of the limit strip, the bottom of the button 4 leaves the second slot, and displacement can occur between the steering sleeve 3 and the transmission rod 2. At this time, the transmission rod 2 is driven to move by the handle 5, so that the button 4 is located at the position of the first slot. At this time, the button 4 is released, so that the bottom of the button 4 is located in the first slot, and the steering sleeve 3 and the transmission rod 2 are fixedly connected. At this time, there is no transmission rod 2 at the exposed hole of the steering sleeve 3, so that space is provided for the installation of the drill bit 1.

[0020] Workflow: Before use, first select a matching drill bit according to the specifications and models of the required implant screws. Then, by pressing the button 4, the handle 5 drives the transmission rod 2 to move in the direction of the handle 5. When the handle moves to the set position, release the button 4, the button 4 and the transmission rod 2 are locked, and sufficient space is reserved for the assembly of the drill bit 1. After the drill bit 1 is installed, press the button 4 again, the handle 5 drives the transmission rod 2 to move away from the handle 5, the bottom of the button 4 is located in the second card slot, so that the steering sleeve 3 and the transmission rod 2 are fixed. At this time, the tooth surface connection between the drill bit 1 and the transmission rod 2 is firmly locked, ready for the subsequent drilling operation. After the drill bit 1 is installed and locked, the operator rotates the handle 5 clockwise. The transmission rod 2 then drives the tooth surface of the drill bit 1 to rotate, generating a cutting force. By accurately controlling the rotation speed and direction, the drill bit 1 is gradually screwed into the predetermined surgical site of the vertebral body to complete the drilling operation. The utility model significantly improves the accuracy and efficiency of the implant screw operation through precise drill bit selection and connection, integrated transmission mechanism and optimized drilling technology. In addition, the design of the utility model takes into account the convenience and safety of operation, further improving the reliability of the surgical process and the safety of the patient.

[0021] The number of devices and processing scale described here are used to simplify the description of the utility model. The application, modification and variation of the utility model are obvious to those skilled in the art.

[0022] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation scheme. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described here.

Claims

1. A disposable sterile steering drill, characterized in that: include: A steering sleeve (3), wherein a drill bit (1) is placed in one end of the steering sleeve (3), and a transmission rod (2) is placed in the other end. One end of the transmission rod (2) extends out of the steering sleeve (3), and a handle (5) is fixedly connected to the extension of the transmission rod (2); A locking assembly is provided on the steering sleeve (3) near the handle (5), and the locking assembly is used to fix the connection between the transmission rod (2) and the steering sleeve (3); A first tapered gear is disposed on the end surface of the transmission rod (2) close to the drill bit (1), and a second tapered gear is disposed on the end surface of the drill bit (1) close to the transmission rod (2). The first tapered gear and the second tapered gear are meshed with each other, and the transmission rod (2) and the drill bit (1) are fixedly connected via the meshing of the first tapered gear and the second tapered gear.

2. A disposable sterile steering drill as claimed in claim 1, characterized in that: The steering sleeve (3) comprises a straight section, a steering section integrally connected to the straight section, and a button connection section integrally connected to one end of the straight section away from the steering section. An exposure hole is provided at the connection between the straight section and the steering section, and the exposure hole exposes the first tapered gear of the moving rod (2) and the second tapered gear of the drill bit (1).

3. A disposable sterile steering drill as claimed in claim 2, characterized in that: The locking assembly comprises a button (4), a spring arranged at the bottom of the button (4) and a limit strip for limiting the displacement of the button (4), wherein a through hole is opened in the middle of the button (4), and the diameter of the through hole is larger than the diameter of the transmission rod (2).

4. A disposable sterile steering drill as claimed in claim 3, characterized in that: The button connection portion is provided with a placement interval, in which the button (4) in the locking assembly is placed; a limit strip is located at the upper end of the placement interval, and both ends of the limit strip penetrate the button (4) and are fixed to the placement interval; and a spring is located at the lower end of the placement interval.

5. A disposable sterile steering drill as claimed in claim 1, characterized in that: The transmission rod (2) is provided with a first clamping groove and a second clamping groove. When the transmission rod (2) is placed in the first clamping groove, the transmission rod (2) and the drill bit (1) are separated. At this time, the drill bit (1) can be taken out from the steering sleeve (3) to replace the drill bit (1) with multiple specifications. When the drill bit (1) is in use, the transmission rod (2) is placed in the second clamping groove to be locked.

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