A medical flexible drill

Abstract

The utility model relates to a kind of medical soft drill, including handle, drill bit, flexible shaft and sheath. Among them, one end of flexible shaft is connected handle, the other end is connected drill bit, and sheath is set in the outside of flexible shaft. When using this soft drill, flexible shaft is connected driving equipment, medical staff hand-held driving equipment or handle and operates, in the operating process, if additional pressure is needed to soft drill, medical staff can directly install the instrument or guide sleeve needed to be used and clamped on sheath, instrument can be pressurized on flexible shaft by sheath, to realize the effect of pressurization. The utility model provides a kind of medical soft drill, by setting sheath, avoid flexible shaft and auxiliary instrument direct contact, with the advantage that operation stability is higher.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a medical soft drill. Background Technology

[0002] Total hip arthroplasty involves the replacement of the acetabulum and femoral prostheses. When dealing with the acetabular side, some patients require further fixation of the acetabular cup with screws after implantation of the acetabular prosthesis. Before screwing in the screws, drilling is required using a soft drill. For patients with sclerosis of the acetabular floor, existing soft drills struggle to adequately transfer the force from the handle to the drill bit, leading to prolonged drilling time, increased risk of injury, and a higher likelihood of screw deviation. Some patients also require additional pressure from surgical instruments, but due to rotational friction between the drill's shaft and the instrument, direct pressure application is prone to deviation and exhibits poor stability. Summary of the Invention

[0003] To address the aforementioned technical problems, this utility model provides a medical soft drill that, by setting a protective sleeve, avoids direct contact between the soft shaft and auxiliary instruments, thus offering the advantage of high operational stability.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A medical soft drill, comprising: Handle; drill; A flexible shaft, one end of which is connected to the shank and the other end of which is connected to the drill bit; and A sheath, which is fitted over the outside of the flexible shaft.

[0005] In one possible implementation, the sheath includes a deformable section and a rigid section, the deformable section corresponding to the middle portion of the flexible shaft.

[0006] In one possible implementation, the sheath is provided with two rigid sections, which are disposed on both sides of the deformable section.

[0007] In one possible implementation, a bearing is provided inside the rigid section, and the rigid section is rotatably connected to the flexible shaft through the bearing.

[0008] In one possible implementation, the bearing is a ball bearing.

[0009] In one possible implementation, the rigid section is provided with anti-slip texture.

[0010] This utility model has the following advantages due to the adoption of the above technical solution: When using this flexible drill, the flexible shaft is connected to the drive device. Medical personnel operate the device by holding the drive device or the handle. During operation, if additional pressure needs to be applied to the drill, medical personnel can directly clamp the required instruments or guide sleeves onto the protective sleeve. The instruments are then pressurized onto the flexible shaft through the protective sleeve, thus achieving the pressure effect. This invention provides a medical flexible drill that, by using a protective sleeve, avoids direct contact between the flexible shaft and auxiliary instruments, resulting in higher operational stability. The sheath is divided into a deformable section and a rigid section, which can accommodate fine-tuning of the angle and enhance operational adaptability. The rigid section is equipped with a bearing to reduce friction and make the soft drill rotate more smoothly; The two rigid sections can be flexibly selected according to actual needs for different pressurization scenarios, making it convenient for medical staff to operate. The flexible shaft connects to the shank at one end and the drill bit at the other, facilitating operation. The overall design of the sheath combines elastic deformation sections and rigid sections, balancing elasticity and rigidity to improve overall stability. It features internal ball bearings to reduce friction and wear, improving durability and smooth operation. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the specific structure of the medical soft drill in one embodiment of the present invention; Figure 2 This is a unfolded view of the components of a medical soft drill according to one embodiment of the present invention; Figure 3 This is a schematic diagram of the specific structure of the sheath in another embodiment of the present invention; Figure label: 1. Shank; 2. Drill bit; 3. Flexible shaft; 4. Sheath; 41. Deformable section; 42. Rigid section. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0013] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," "third," "fourth," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0014] Total hip arthroplasty involves the replacement of the acetabulum and femoral prostheses. When dealing with the acetabular side, some patients require further fixation of the acetabular cup with screws after implantation of the acetabular prosthesis. Before screwing in the screws, drilling is required using a flexible drill. For patients with sclerosis of the acetabular floor, existing flexible drills struggle to fully transmit the force from the handle to the drill bit, leading to prolonged drilling time, increased risk of injury, and a higher likelihood of screw deviation. Some patients also require additional pressure from surgical instruments, but due to rotational friction between the flexible drill shaft and the instruments, direct pressure application is prone to deviation, resulting in poor stability. To address these technical problems, this invention provides a medical flexible drill that, by incorporating a sheath, avoids direct contact between the flexible shaft and auxiliary instruments, offering higher operational stability. The technical solution of this invention will be described in detail below with specific examples.

[0015] Reference Figure 1 , Figure 2 as well as Figure 3 As shown, the medical soft drill of this utility model includes a shank 1, a drill bit 2, a flexible shaft 3, and a sheath 4. One end of the flexible shaft 3 is connected to the shank 1, and the other end is connected to the drill bit 2. The sheath 4 is fitted over the outside of the flexible shaft 3.

[0016] It should be noted that the installation of the soft drill is a common operation. During installation, the flexible shaft 3 passing through the shank 1 is connected to the drive device. During the operation, medical staff can hold the drive device or the shank 1 of the soft drill. The shank 1 does not rotate with the flexible shaft 3. In this embodiment, one end of the sheath 4 is fixedly connected to the shank 1, so the sheath 4 also does not rotate with the flexible shaft 2.

[0017] For example, when using this flexible drill, the flexible shaft 3 is connected to the drive device, and medical personnel operate it by holding the drive device or the handle 1. During operation, if additional pressure needs to be applied to the flexible drill, the medical personnel can directly install and clamp the required instruments or guide sleeves onto the protective sleeve 4. The instruments can then be pressurized onto the flexible shaft 3 through the protective sleeve 4, thereby achieving the pressure effect. This utility model provides a medical flexible drill that, by setting the protective sleeve 4, avoids direct contact between the flexible shaft 3 and auxiliary instruments, thus having the advantage of high operational stability.

[0018] In one embodiment, the overall structure of the sheath 4 is further refined. The sheath 4 includes a deformable section 41 and a rigid section 42. The deformable section 41 corresponds to the middle part of the flexible shaft 3.

[0019] It should be noted that in some application scenarios, it is necessary to fine-tune the overall angle of the soft drill. In this embodiment, in order to cope with this situation, the sheath 4 is designed in segments. Its deformable segment 41 is an elastic structure that can deform synchronously with the soft shaft 3, while the rigid segment 42 is a rigid structure. During the pressurization operation, the instrument can be directly installed and clamped on the rigid segment 42, which improves the connection stability of this part and further optimizes the operation stability of the soft drill.

[0020] In this embodiment, it is preferable that the sheath 4 is provided with two rigid sections 42, which are disposed on both sides of the deformable section 41.

[0021] The rigid section 42 is positioned above and below the deformable section 41. In actual operation, medical staff can flexibly select the appropriate rigid section 42 for pressurization operation according to the actual situation.

[0022] Specifically, in this embodiment, in order to optimize the clamping force on the rigid section 42, anti-slip texture is provided on the rigid section 42.

[0023] In this embodiment, it is preferable that a bearing is provided inside the rigid section 42, and the rigid section 42 is rotatably connected to the flexible shaft 3 through the bearing.

[0024] The bearing configuration optimizes the friction between the rigid section 42 and the flexible shaft 3, converting frictional motion into rotational motion, making the contact between the two smoother, and further optimizing the operational stability of the soft drill.

[0025] In this embodiment, the bearing is specifically a ball bearing.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A medical soft drill, characterized in that, include: Handle; drill; A flexible shaft, one end of which is connected to the shank and the other end of which is connected to the drill bit; as well as A sheath, which is fitted over the outside of the flexible shaft.

2. The medical soft drill according to claim 1, characterized in that, The sheath includes a deformable section and a rigid section, the deformable section corresponding to the middle part of the flexible shaft.

3. The medical soft drill according to claim 2, characterized in that, The sheath is provided with two rigid sections, which are located on both sides of the deformable section.

4. The medical soft drill according to claim 3, characterized in that, The rigid section is equipped with a bearing inside, and the rigid section is rotatably connected to the flexible shaft through the bearing.

5. The medical soft drill according to claim 4, characterized in that, The bearing is a ball bearing.

6. The medical soft drill according to claim 3, characterized in that, The rigid section is provided with anti-slip texture.

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