A torque-adjustable composite tool

Abstract

The utility model provides a kind of composite tool of adjustable torque belongs to medical instrument technical field.The composite tool of adjustable torque, it is characterized by, including: handle, handle is opened stepped hole along axis, and connecting rod is installed in hole;Connecting rod middle section is equipped with sliding pad block, pad block top is equipped with connecting rod sleeve, and connecting rod sleeve is fixed with connecting rod interference fit by bottom integral fixed rod.Connecting rod sleeve is equipped with positioning sleeve outside, positioning sleeve is connected with handle by screw, and inside opening stepped through-hole, edge opening half circle through-hole;Stepped through-hole is equipped with sliding sleeve, and torque adjusting assembly is equipped in through-hole.Sliding sleeve top has the stop ring of positioning connecting rod, and torque handle is fixed by screw, and torque handle bottom is placed in handle.In use, rotating torque handle can drive torque adjusting assembly to act on connecting rod sleeve, realize torque accurate regulation and balanced force, adapt to posterior region implantation operation, guarantee dental implantation operation precision and stability.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and more specifically, to a torque-adjustable composite tool. Background Technology

[0002] With the increasing demand for oral health and aesthetics, dental implant technology has become widely used. This technology involves implanting an implant into the alveolar bone to provide stable support and fixation for prostheses and other restorations. Precise control of the implant insertion torque is crucial in this process. If the torque is below the predetermined value, it can easily lead to insufficient initial implant stability; while excessive torque may cause excessive pressure on the surrounding bone, leading to implant-osseointegration failure. Therefore, precise torque control is a key step in achieving good integration between the implant and bone tissue and ensuring the initial stability of the implant, which urgently requires specialized tools to ensure the success of the implant surgery. However, currently available tools generally have the following problems: insufficient torque accuracy, narrow adjustable range, difficult or even impossible adjustment, and a tendency to cause uneven force application during use. Furthermore, their applicability in specific implant locations in the posterior tooth region is also insufficient. Utility Model Content

[0003] To overcome the above deficiencies, this application provides a torque-adjustable composite tool to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model to solve its technical problem is as follows: A torque-adjustable composite tool, characterized in that it comprises: a handle and a stepped hole formed at the head end of the handle along its axial direction to the tail end; a connecting rod is assembled inside the stepped hole; a sliding pad is installed in the middle section of the connecting rod; a connecting rod sleeve is installed above the sliding pad; a fixing rod is integrally formed at the bottom of the connecting rod sleeve and is interference-fitted with the connecting rod through the fixing rod; a positioning sleeve is provided on the surface of the connecting rod sleeve; the positioning sleeve is fixedly connected to the handle by screws; a stepped through hole is formed inside the sleeve, and a semi-circular through hole is formed on the surface edge; a sliding sleeve is matched inside the stepped through hole; a plurality of torque adjustment components are provided inside the semi-circular through hole; a retaining ring for positioning the connecting rod is provided above the sliding sleeve, and a torque handle is fixed by screws; the bottom of the torque handle is located inside the top of the handle.

[0005] Furthermore, the bottom end of the connecting rod is provided with a threaded interface.

[0006] Furthermore, the sliding pad is made of wear-resistant metal material, and the two end faces of the sliding pad slide in contact with the inner stepped surface of the handle and the end face of the connecting rod sleeve.

[0007] Furthermore, a spherical groove is formed on the end face of the connecting rod sleeve, and the interior of the spherical groove corresponds to the interior of the semicircular through hole formed on the edge of the positioning sleeve surface, and matches the bottom of the torque adjustment component.

[0008] Furthermore, the torque adjustment assembly consists of a sliding steel ball, a spring, and a guide rod. The sliding steel ball is placed inside the through hole and matches the corresponding spherical groove. The other end is sequentially equipped with the spring and the guide rod, and the top end of the guide rod is in contact with the bottom of the torque handle.

[0009] Furthermore, the outer circumference of the torsion handle is provided with engraved lines, and the bottom is provided with two surfaces of different heights, which are connected by an inclined plane and press against the transmission rod and the spring.

[0010] Furthermore, the number of springs is the same as the number of through holes, and the two ends of each spring abut against the corresponding sliding steel ball and the conductive rod, respectively.

[0011] Furthermore, the handle, the connecting rod, the connecting rod sleeve, the positioning sleeve, and the sliding sleeve are all rotating structures, and the axes of each component are collinear.

[0012] This utility model has the following beneficial effects: 1. This utility model utilizes a torque adjustment component (sliding steel ball, spring, and transmission rod) in conjunction with the spherical groove of the connecting rod sleeve, combined with the gradient pressure structure of the high and low surfaces and the inclined surface at the bottom of the torque handle. This allows for precise adjustment of the spring compression, thereby accurately controlling the tool's output torque. Compared to the insufficient torque precision in existing technologies, this effectively avoids the risks of implant loosening due to excessively low torque or bone tissue damage due to excessively high torque. It ensures good osseointegration between the implant and bone tissue, significantly improving the initial stability and long-term success rate of implant surgery.

[0013] 2. The connecting rod of this utility model is provided with a threaded interface, which makes it convenient to replace various tools and can be used for products of different systems. It has stronger applicability, can be used in both the front and back tooth areas, and does not interfere with the wide range of applications.

[0014] 3. The engravings on the torque handle of this utility model can accurately display the torque magnitude, making it safer to use.

[0015] 4. The tool of this utility model is designed as a rotating body, which makes it more balanced and prevents it from tilting when force is applied. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the torque-adjustable composite tool structure provided in the embodiments of this application; Figure 2 A cross-sectional structural schematic diagram of the torque-adjustable composite tool provided for the embodiments of this application; Figure 3 A schematic diagram of the connecting rod sleeve and torque adjustment assembly provided for embodiments of this application is shown. Figure 4 A schematic diagram of the cross-sectional structure of the handle provided for an embodiment of this application; Figure 5 This is a cross-sectional view of the positioning sleeve provided in an embodiment of this application.

[0018] In the diagram: 1-Handle; 2-Step hole; 3-Connecting rod; 4-Sliding pad; 5-Connecting rod sleeve; 6-Fixing rod; 7-Positioning sleeve; 8-Step through hole; 9-Through hole; 10-Sliding sleeve; 11-Torque adjustment component; 12-Retaining ring; 13-Torque handle; 51-Spherical groove; 111-Sliding steel ball; 112-Spring; 113-Conduction rod. Detailed Implementation

[0019] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0020] Example: Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5A torque-adjustable composite tool, characterized in that it comprises: a handle 1 and a stepped hole 2 formed at the head end of the handle 1 along its axial direction to the tail end; a connecting rod 3 is assembled inside the stepped hole 2; a sliding pad 4 is installed in the middle section of the connecting rod 3; a connecting rod sleeve 5 is installed above the sliding pad 4; a fixing rod 6 is integrally formed at the bottom of the connecting rod sleeve 5 and is interference-fitted with the connecting rod 3 through the fixing rod 6; a positioning sleeve 7 is provided on the surface of the connecting rod sleeve 5; the positioning sleeve 7 is fixedly connected to the handle 1 by screws; a stepped through hole 8 is formed inside the sleeve; a semi-circular through hole 9 is formed on the edge of the surface; a sliding sleeve 10 is matched inside the stepped through hole 8; a plurality of torque adjustment components 11 are provided inside the semi-circular through hole 9; a retaining ring 12 of the positioning connecting rod 3 is provided above the sliding sleeve 10; and a torque handle 13 is fixed to the top of the handle 1 by screws; the bottom of the torque handle 13 is located inside the top of the handle 1; a spherical groove 51 is formed on the end face of the connecting rod sleeve 5; the torque adjustment component 11 is composed of a sliding steel ball 111, a spring 112, and a transmission rod 113.

[0021] First, the sliding pad 4 is installed in the middle section of the connecting rod 3 with an interference fit. Then, the connecting rod sleeve 5 is fitted onto the connecting rod 3, so that the fixing rod 6 is embedded into the corresponding stepped hole 2 of the connecting rod 3, thus fixing the connecting rod sleeve 5 to the connecting rod 3. Next, the connecting rod 3 with the sliding pad 4 and connecting rod sleeve 5 assembled is inserted into the stepped hole 2 of the handle 1, so that the threaded interface at the bottom of the connecting rod 3 extends out of the head end of the handle 1. The positioning sleeve 7 is fitted onto the connecting rod 3, and the position is adjusted so that the through hole 9 is aligned with the spherical groove 51 on the surface of the connecting rod sleeve 5. Finally, the positioning sleeve 5 is fixed to the handle 1 with screws. First, insert the sliding steel ball 111, spring 112, and guide rod 113 into each through hole 9 of the positioning sleeve 7 in sequence, ensuring that the sliding steel ball 111 is embedded in the spherical groove 51 and the spring 112 is in a slightly compressed state with a compression amount of 1-2mm. Then, put the sliding sleeve 10 on the connecting rod 3 so that it extends into the stepped through hole 8 of the positioning sleeve 7, and then install the retaining ring 12. Finally, align the bottom cylinder of the torsion handle 13 with the sliding sleeve 10 and fix it with screws, ensuring that the bottom plane of the torsion handle 13 fits against the top of the guide rod 113, and complete the overall assembly.

[0022] The outer wall of the handle 1 is designed according to human biomechanics for easy use by doctors; and the outer wall of the handle 1 is provided with an arc groove and annular anti-slip texture.

[0023] The bottom end of the connecting rod 3 is provided with a threaded interface, which is convenient for installing various tools.

[0024] The retaining ring 12 fixes the positioning sleeve 7 and the sliding sleeve 10 to the connecting rod 3.

[0025] The tool has two extreme states during use. The first extreme state is the fully relaxed state, where the transmission rod 113 rests against the lower surface of the torque handle 13. At this time, the spring 112 is basically relaxed, and the force exerted on the connecting rod sleeve 5 through the transmission rod 113, spring 112, and sliding steel ball 111 is relatively small. When the handle 1 is rotated at this time, the sliding steel ball 111 will slide out of the spherical groove 51 on the surface of the connecting rod sleeve 5 when a certain force is applied. At this time, the torque of the tool is minimal. If the torque needs to be increased, the torque handle 13 needs to be rotated so that the transmission rod 113 slides to the higher surface of the torque handle 13. At this time, the spring 112 is compressed, and the force transmitted to the connecting rod sleeve 5 is also greater. The force of the sliding steel ball 111 escaping from the spherical groove 51 on the surface of the connecting rod sleeve 5 is also greater, and the torque is greater. The more transmission rods 113 slide to the higher surface of the torque handle 13, the greater the torque will be. The higher surface of the handle 13, the more springs 112 are compressed, resulting in greater torque. The torque of the tool can be gradually increased by rotating the handle 13, and adjusting the torque is very easy. When all the transmission rods 113 slide to the higher surface of the handle 13, the tool is in its second limit state. At this time, all the springs 112 are compressed, and the connecting rod sleeve 5 experiences the greatest force. When rotating the handle 1, a large force is required to make the sliding steel ball 111 slide out of the spherical groove 51 on the surface of the connecting rod sleeve 5. If the handle 13 is rotated further, the transmission rods 113 will gradually slide to the lower surface of the handle 13, and the torque will gradually decrease. In addition, the torque can be adjusted by changing the size and number of springs 112 to achieve precise control of the torque. The markings on the handle 13 can accurately display the torque of the tool, making it safer to use.

[0026] In this process, the dental implant drill bit or implant clamping assembly is connected to the threaded interface at the bottom of the connecting rod 3. The medical staff holds the handle 1, with their thumb and index finger embedded in the arc-shaped groove, and the other fingers conforming to the ring-shaped anti-slip texture. At this time, the spindle-shaped structure of the handle naturally fits the palm, and the direction of force can be finely adjusted by the fingertips to avoid fatigue caused by excessive bending of the wrist. When the tool is started, the connecting rod 3 drives the drill bit or implant to rotate. During the implantation process, the output torque of the tool is maintained at the set value. If the resistance exceeds the set torque, the spring 113 is further compressed, and the sliding steel ball 111 disengages from the spherical groove 51. The connecting rod 3 and the connecting rod sleeve 5 slip relative to each other to avoid torque overload. If the resistance is normal, the sliding steel ball 111 is always embedded in the spherical groove 51 to ensure stable torque output until the implant is implanted in place.

[0027] It should be noted that the specific model and specifications of spring 112 need to be selected and determined according to the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail here.

[0028] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A torque-adjustable compound tool, characterized in that, include: The handle (1) and the handle (1) are provided with a stepped hole (2) along their axial direction to the tail end. The stepped hole (2) is equipped with a connecting rod (3). A sliding pad (4) is installed in the middle section of the connecting rod (3). A connecting rod sleeve (5) is installed above the sliding pad (4). A fixing rod (6) is integrally made at the bottom of the connecting rod sleeve (5). The fixing rod (6) is interference-fitted with the connecting rod (3). A positioning sleeve (7) is provided on the surface of the connecting rod sleeve (5). The positioning sleeve (7) is fixedly connected to the handle (1) by screws. A stepped through hole (8) is provided inside. A semi-circular through hole (9) is provided on the edge of the surface. A sliding sleeve (10) is matched inside the stepped through hole (8). Several torque adjustment components (11) are provided inside the semi-circular through hole (9). A retaining ring (12) for positioning the connecting rod (3) is provided above the sliding sleeve (10). A torque handle (13) is fixed by screws. The bottom of the torque handle (13) is located at the top inside the handle (1).

2. The torque-adjustable composite tool according to claim 1, characterized in that, The bottom end of the connecting rod (3) is provided with a threaded interface.

3. The torque-adjustable composite tool according to claim 2, characterized in that, The sliding pad (4) is made of wear-resistant metal material, and the two ends of the sliding pad (4) slide in the step hole (2) inside the handle (1) and the end face of the connecting rod sleeve (5).

4. A torque-adjustable composite tool according to claim 3, characterized in that, The end face of the connecting rod sleeve (5) has a ring of spherical grooves (51). The inside of the ring of spherical grooves (51) corresponds to the inside of the half ring of through holes (9) opened on the edge of the surface of the positioning sleeve (7), and matches the bottom of the torque adjustment component (11).

5. A torque-adjustable composite tool according to claim 4, characterized in that, The torque adjustment assembly (11) consists of a sliding steel ball (111), a spring (112) and a guide rod (113). The sliding steel ball (111) is placed inside the through hole (9) and matches the corresponding spherical groove (51). The other end is sequentially equipped with the spring (112) and the guide rod (113). The top end of the guide rod (113) is in contact with the bottom of the torque handle (13).

6. A torque-adjustable composite tool according to claim 5, characterized in that, The outer circumference of the torsion handle (13) is provided with engraved lines, and the bottom is provided with two surfaces, one high and one low, which are connected by an inclined plane and press against the transmission rod (113) and the spring (112).

7. A torque-adjustable composite tool according to claim 6, characterized in that, The number of springs (112) is the same as the number of through holes (9), and the two ends of each spring (112) abut against the corresponding sliding steel ball (111) and the guide rod (113).

8. A torque-adjustable composite tool according to claim 7, characterized in that, The handle (1), the connecting rod (3), the connecting rod sleeve (5), the positioning sleeve (7), and the sliding sleeve (10) are all rotating structures, and the axes of each component are collinear.

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