Drill bit for minimally invasive total hip arthroplasty

Abstract

The utility model discloses a kind of drill bits for total hip arthroplasty minimally invasive surgery, belong to arthroplasty minimally invasive technical field, including driving assembly, the lower end of driving assembly is equipped with connecting assembly, the inside of connecting assembly is equipped with drill bit assembly;Driving assembly includes installation shell, the inside fixed connection of installation shell has lithium cell, the inside fixed connection of installation shell has servo motor, the lower end rotationally connected of installation shell has rotating rod, its technical scheme main point is, through the connecting assembly of worm and worm gear transmission and sliding clamping structure combination, the convenient quick clamping and loosening of drill bit assembly are realized, before operation, medical staff only needs to rotate knob, worm drives worm rotation, and then make upper rotating ring and lower rotating ring rotate, through the cooperation of sliding sleeve, sliding clamping rod and rotating shaft, drill rod can be quickly tightened or loosened clamping, compared with traditional fixed connection mode, the time of installing and disassembling drill bit is greatly shortened, and operation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of minimally invasive joint replacement surgery, and more specifically, to a drill bit for minimally invasive total hip replacement surgery. Background Technology

[0002] Minimally invasive total hip replacement surgery is a surgical method that uses small incisions to replace the hip joint. Compared with traditional hip replacement surgery, it has the advantages of less trauma, less bleeding, faster recovery, less pain, and shorter hospital stay. In minimally invasive total hip replacement surgery, it is usually necessary to use a drill to drill holes in the acetabulum and femur to remove diseased or damaged bone, create a suitable bone bed for the implantation of the prosthesis, so that the prosthesis can fit better with the bone and improve the stability and fixation effect of the prosthesis.

[0003] For example, Chinese patent application number CN202022152489.8 provides a limiting drill rod for stereotactic electroencephalography (EEG) skull drilling. In this solution, the limiting sleeve abuts against the clamping device on the guide bow of the stereotactic instrument or the robotic arm of the surgical robot to achieve limitation during drilling of the skull by hand. However, conventional drills use two clamping blocks to hold the drill rod. The drill rod vibrates during drilling, making it easy for it to fall off. Furthermore, different clamping structures are required when changing drill rods of different diameters, resulting in low adaptability.

[0004] Therefore, a drill bit for minimally invasive total hip replacement surgery is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a drill bit for minimally invasive surgery of total hip replacement.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A drill bit for minimally invasive total hip replacement surgery includes a drive assembly, a connecting assembly at the lower end of the drive assembly, and a drill bit assembly inside the connecting assembly. The drive assembly includes a mounting housing, a lithium battery fixedly connected inside the mounting housing, a servo motor fixedly connected inside the mounting housing, a rotating rod rotatably connected to the lower end of the mounting housing, an upper end of the rotating rod fixedly connected to the output end of the servo motor, and a first limiting ring fixedly connected to the middle of the rotating rod inside the mounting housing. The connecting assembly includes a connecting housing fixedly connected to the lower end of the rotating rod. A fixed limiting ring is fixedly connected inside the connecting housing. A lower rotating ring is provided at the upper end of the fixed limiting ring. A second limiting ring is fixedly connected to the lower end of the lower rotating ring. The second limiting ring is rotatably connected to the upper end of the fixed limiting ring. The lower rotating ring is provided with an upper rotating ring at its upper end. The lower rotating ring and the upper rotating ring are fixedly connected by multiple connecting rods. The lower rotating ring and the upper rotating ring are rotatably connected by multiple sliding sleeves. Each of the multiple sliding sleeves is slidably connected with a sliding clamping rod in the middle. One end of each of the multiple sliding clamping rods is rotatably connected with a rotating shaft. Each of the multiple rotating shafts is fixedly connected to the upper end of the fixed limiting ring. The upper end of the upper rotating ring is fixedly connected to a worm gear, and the inside of the connecting housing is rotatably connected to a worm. The worm is meshed with the worm gear, and a knob is fixedly connected to one end of the worm.

[0007] Furthermore, the drill bit assembly includes a drill rod, the upper end of which is fixedly connected to a cross-shaped protrusion.

[0008] Furthermore, a cross-shaped groove is provided at the lower end of the rotating rod.

[0009] In summary, this utility model has the following beneficial effects: This solution utilizes a connection component combining worm gear transmission and a sliding clamping structure to achieve convenient and rapid clamping and release of the drill bit assembly. Before surgery, medical staff only need to turn a knob, which drives the worm gear to rotate, thereby causing the upper and lower rotating rings to rotate. Through the cooperation of the sliding sleeve, sliding clamping rod, and rotating shaft, the clamping of the drill rod can be quickly tightened or loosened. Compared with the traditional fixed connection method, this greatly shortens the time for installing and disassembling the drill bit and improves surgical efficiency. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure in this embodiment; Figure 2 This is a schematic diagram of the disassembled drill bit assembly in this embodiment; Figure 3 This is a schematic diagram of the structure of the connecting outer shell in this embodiment; Figure 4 This is a schematic diagram of the disassembled connection components in this embodiment; Figure 5 This is a schematic diagram of the structure of the installed outer casing in this embodiment.

[0011] The diagram shows the following components: 1. Drive assembly; 2. Connecting assembly; 3. Drill bit assembly; 101. Mounting housing; 102. Lithium battery; 103. Servo motor; 104. Rotating rod; 105. First limiting ring; 201. Connecting housing; 202. Fixed limiting ring; 203. Lower rotating ring; 204. Second limiting ring; 205. Upper rotating ring; 206. Connecting rod; 207. Sliding sleeve; 208. Sliding clamping rod; 209. Rotating shaft; 210. Worm gear; 211. Worm; 212. Knob; 301. Drill rod; 302. Cross protrusion. Detailed Implementation

[0012] The present invention will be further described in detail below with reference to the accompanying drawings.

[0013] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific part, respectively.

[0014] Reference Figure 1-5 As shown, this is a drill bit for minimally invasive total hip replacement surgery in a preferred embodiment of the present invention. It includes a drive assembly 1, a connecting assembly 2 at the lower end of the drive assembly 1, and a drill bit assembly 3 inside the connecting assembly 2. The drive assembly 1 includes a mounting housing 101, a lithium battery 102 fixedly connected inside the mounting housing 101, a servo motor 103 fixedly connected inside the mounting housing 101, a rotating rod 104 rotatably connected to the lower end of the mounting housing 101, the upper end of the rotating rod 104 fixedly connected to the output end of the servo motor 103, and a first limiting ring 105 fixedly connected to the middle part of the rotating rod 104 inside the mounting housing 101. Using the mounting housing 101 as a carrier, the lithium battery 102 fixedly connected inside powers the servo motor 103. The servo motor 103 drives the rotating rod 104 at the output end to rotate. The first limiting ring 105 in the middle of the rotating rod 104 is fixed inside the mounting housing 101, which limits the rotation of the rotating rod 104 and makes it rotate stably inside the mounting housing 101, thus achieving the effect of providing power to the drill bit and ensuring rotational stability.

[0015] The connecting assembly 2 includes a connecting housing 201 fixedly connected to the lower end of the rotating rod 104. A fixed limiting ring 202 is fixedly connected inside the connecting housing 201. A lower rotating ring 203 is provided at the upper end of the fixed limiting ring 202. A second limiting ring 204 is fixedly connected to the lower end of the lower rotating ring 203. The second limiting ring 204 is rotatably connected to the upper end of the fixed limiting ring 202. The lower rotating ring 203 is fixedly connected to the lower end of the rotating rod 104 by the connecting housing 201. The fixed limiting ring 202 is fixed inside the connecting housing 201. The second limiting ring 204 at the lower end of the lower rotating ring 203 is rotatably connected to the upper end of the fixed limiting ring 202, so that the lower rotating ring 203 can rotate relative to the fixed limiting ring 202 inside the connecting housing 201, realizing the rotatable function of the lower rotating ring 203 and providing a basis for the movement of the subsequent structure.

[0016] The lower rotating ring 203 has an upper rotating ring 205 at its upper end. The lower rotating ring 203 and the upper rotating ring 205 are fixedly connected by multiple connecting rods 206. Multiple sliding sleeves 207 are rotatably connected to the lower rotating ring 203 and the upper rotating ring 205. Sliding clamping rods 208 are slidably connected to the middle of each of the multiple sliding sleeves 207. A rotating shaft 209 is rotatably connected to one end of each of the multiple sliding clamping rods 208. The multiple rotating shafts 209 are fixedly connected to the upper end of the fixed limiting ring 202. The lower rotating ring 203 and the upper rotating ring 205 are fixedly connected by multiple connecting rods 206. Multiple sliding sleeves 207 are rotatably connected between the lower rotating ring 203 and the upper rotating ring 205 assembly. A sliding clamping rod 208 is slidably connected inside the sliding sleeve 207. One end of the sliding clamping rod 208 is fixedly connected to the upper end of the fixed limiting ring 202 through a rotating shaft 209. In this way, when the lower rotating ring 203 rotates, the upper rotating ring 205 is driven to rotate through the connecting rods 206. At the same time, the cooperation of the sliding sleeve 207, the sliding clamping rod 208 and the rotating shaft 209 allows the sliding clamping rod 208 to slide inside the sliding sleeve 207, realizing an adjustable connection and movement effect, and providing a structural basis for clamping the drill bit.

[0017] The upper end of the upper rotating ring 205 is fixedly connected to a worm gear 210, and the inside of the connecting housing 201 is rotatably connected to a worm 211. The worm 211 is meshed with the worm gear 210, and a knob 212 is fixedly connected to one end of the worm 211. The upper end of the upper rotating ring 205 is fixedly connected to the worm gear 210. The worm 211, which is rotatably connected inside the housing 201, is meshed with the worm gear 210. The knob 212 at one end of the worm 211 is easy to operate. Rotating the knob 212 drives the worm 211 to rotate. The worm 211 is driven by meshing with the worm gear 210, which in turn drives the upper rotating ring 205 to rotate. This achieves the effect of controlling the rotation of the upper rotating ring 205 by the knob 212, thereby adjusting the position of the sliding clamping rod 208 to clamp or release the drill bit.

[0018] The drill bit assembly 3 includes a drill rod 301, and a cross-shaped protrusion 302 is fixedly connected to the upper end of the drill rod 301; The drill rod 301 serves as the main body of the drill bit for drilling operations. The cross-shaped protrusion 302 at its upper end can be connected with other components to achieve the installation and fixation of the drill rod 301.

[0019] A cross-shaped groove is provided at the lower end of the rotating rod 104; The cross groove at the lower end of the rotating rod 104 can cooperate with the cross protrusion 302 at the upper end of the drill rod 301 in the drill bit assembly 3, thereby connecting the rotating rod 104 and the drill rod 301. This allows the rotation of the rotating rod 104 to be transmitted to the drill rod 301, ensuring the transmission of power.

[0020] Specific implementation process: First, align the cross protrusion 302 at the upper end of the drill rod 301 of the drill bit assembly 3 with the cross groove at the lower end of the rotating rod 104, insert them and ensure a tight fit, thus completing the connection between the drill bit assembly 3 and the drive assembly 1. Then, rotate the knob 212, which drives the worm gear 211 to rotate. Since the worm gear 211 is meshed with the worm wheel 210, the worm wheel 210 rotates accordingly. The worm wheel 210 is fixedly connected to the upper rotating ring 205, so the upper rotating ring 205 also rotates. The upper rotating ring 205 drives the lower rotating ring 203 to rotate synchronously through the connecting rod 206. During the rotation, the sliding sleeve 207, the sliding clamping rod 208, and the rotating shaft 209 between the lower rotating ring 203 and the upper rotating ring 205 cooperate with each other, so that the sliding clamping rod 208 is in the sliding sleeve 207. The drill rod 301 is gradually tightened by sliding within the 07, until it is securely fixed within the connecting assembly 2. Next, the servo motor 103 inside the mounting housing 101 is activated. The lithium battery 102 powers the servo motor 103, causing the output rotating rod 104 to rotate. The first limiting ring 105 in the middle of the rotating rod 104 is fixed inside the mounting housing 101, limiting the rotation of the rotating rod 104 and ensuring its stable rotation. The rotation of the rotating rod 104 is transmitted to the drill bit through the connected drill rod 301, thus performing the drilling operation for the minimally invasive total hip replacement surgery. After the surgery, the servo motor 103 is first turned off, and then the knob 212 is rotated to release the drill rod 301 using the sliding clamping rod 208. The drill bit assembly 3 is then removed from the drive assembly 1 and stored away.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A drill bit for minimally invasive total hip replacement surgery, comprising a drive assembly (1), characterized in that: The lower end of the drive component (1) is provided with a connecting component (2), and the inside of the connecting component (2) is provided with a drill bit component (3). The drive assembly (1) includes a mounting housing (101), a lithium battery (102) is fixedly connected inside the mounting housing (101), a servo motor (103) is fixedly connected inside the mounting housing (101), a rotating rod (104) is rotatably connected to the lower end of the mounting housing (101), the upper end of the rotating rod (104) is fixedly connected to the output end of the servo motor (103), and a first limiting ring (105) is fixedly connected to the middle of the rotating rod (104) and inside the mounting housing (101). The connecting assembly (2) includes a connecting shell (201) fixedly connected to the lower end of the rotating rod (104). A fixed limiting ring (202) is fixedly connected inside the connecting shell (201). A lower rotating ring (203) is provided at the upper end of the fixed limiting ring (202). A second limiting ring (204) is fixedly connected at the lower end of the lower rotating ring (203). The second limiting ring (204) is rotatably connected to the upper end of the fixed limiting ring (202). The lower rotating ring (203) has an upper rotating ring (205) at its upper end. The lower rotating ring (203) and the upper rotating ring (205) are fixedly connected by multiple connecting rods (206). The lower rotating ring (203) and the upper rotating ring (205) are rotatably connected by multiple sliding sleeves (207). Each of the multiple sliding sleeves (207) is slidably connected to a sliding clamping rod (208) in the middle. Each of the multiple sliding clamping rods (208) is rotatably connected to a rotating shaft (209) at one end. Each of the multiple rotating shafts (209) is fixedly connected to the upper end of the fixed limiting ring (202). The upper end of the upper rotating ring (205) is fixedly connected to a worm gear (210), and the inside of the connecting housing (201) is rotatably connected to a worm (211). The worm (211) meshes with the worm gear (210), and a knob (212) is fixedly connected to one end of the worm (211).

2. The drill bit for minimally invasive total hip replacement surgery according to claim 1, characterized in that: The drill bit assembly (3) includes a drill rod (301), and a cross-shaped protrusion (302) is fixedly connected to the upper end of the drill rod (301).

3. The drill bit for minimally invasive total hip replacement surgery according to claim 1, characterized in that: The lower end of the rotating rod (104) is provided with a cross groove.

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