Medical torsion handle
By designing a medical torque handle that uses the upper and lower shell twisting method and the setting of the urging rod and the butterfly spring, the problems of inconvenience in applying force and difficulty in replacing accessories by traditional torque handles are solved, and more efficient and convenient surgical operations and accessories replacement are achieved.
Patent Information
- Application Number
- CN202421015919.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-05-11
AI Technical Summary
Traditional torque handles are inconvenient to apply force during medical surgery, which can easily reduce friction due to contamination of blood or tissue fluid, and the complex structure causes damage to the accessories and need to be replaced as a whole, which increases the cost of use.
A medical torque handle is designed, and the torque adjustment is achieved by twisting the upper and lower shells. Two urging rods and butterfly springs are set to improve operating mechanics. The quick-loading interface and ball structure are easy to disassemble and replace accessories.
Through the optimized structural design, doctors can achieve more comfortable and accurate operation during surgery, improve surgical efficiency and quality, simplify the accessory replacement process, and reduce the cost of use.
Smart Images
Figure CN222565928U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical instruments, and in particular relates to a medical torque handle. Background Art
[0002] The torque handle in orthopedic surgical instruments is a common tool, mainly used to apply torque in orthopedic surgery. The torque handle is used to tighten the bone screw after connecting the knife rod of the bone screw, thereby ensuring the accuracy and safety of fracture reduction and fixation. As an internal fixation device, the bone screw is used to tightly connect the fracture ends and promote bone healing; while the torque handle can accurately control the torque during screw implantation to avoid excessive tightening leading to tissue damage or screw breakage. The combined use of the two not only ensures the surgical effect, but also improves the operating efficiency. Traditional torque handles mostly use a handle structure similar to a screwdriver, which often makes it inconvenient to apply force during medical surgery. In addition, during the operation, the handle may be contaminated by blood, tissue fluid and other substances, resulting in reduced friction, which makes it easy for doctors to slip when applying force, thereby affecting the operation; and given the complexity of the torque handle structure, once the relevant accessories are damaged, the damaged part cannot be replaced separately, but needs to be replaced as a whole, which undoubtedly increases the cost of use. Therefore, the utility model proposes this kind of medical torque handle, which is convenient for doctors to apply force during surgery, ensuring that doctors can operate the torque handle comfortably and accurately, improving surgical efficiency and quality, and at the same time facilitating the disassembly and replacement of accessories, meeting the demand for convenient replacement of accessories during actual use.
[0003] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a medical torque handle, comprising a handle, the handle comprising an upper shell and a lower shell, the bottom end of the upper shell and the top end of the lower shell are connected by a threaded manner, the top end of the upper shell is rotatably connected with an end cap, a force rod is fixed at the center of the top end of the end cap, the end cap is located inside the upper shell and is fixedly connected with a fixed cylinder, the bottom end of the fixed cylinder is evenly fixed with a first ratchet, the bottom end of the lower shell is opened with an opening, a core rod is provided at the center of the inner part of the lower shell, the core rod shaft passes through the opening, the bottom end of the core rod shaft is provided with a quick-release interface, the outer side of the shaft at the top of the core rod is threadedly connected with a sleeve, and the top end of the core rod is inserted into the fixed cylinder, the top end of the sleeve is evenly fixed with a second ratchet, the first ratchet and the second ratchet are meshingly connected, and the outer side of the shaft of the core rod located at the bottom of the sleeve is evenly installed with a butterfly spring sheet.
[0005] As a preferred technical solution of the utility model, a protective ring is connected to the outer side of the threaded connection at the top end of the lower shell, and the protective ring and the lower shell are an integrally formed structure, and the inner wall of the protective ring fits the outer wall of the upper shell.
[0006] As a preferred technical solution of the utility model, the lower shell is evenly provided with installation cavities on the inner wall of the opening, and balls are installed inside the installation cavities, and the balls are in contact with the core rod.
[0007] As a preferred technical solution of the present utility model, a scale is provided on one side of the outer wall of the upper shell.
[0008] As a preferred technical solution of the present utility model, the outer wall of the lower shell is provided with anti-slip patterns.
[0009] Compared with the prior art, the beneficial effects of the utility model are:
[0010] (1) The utility model inserts the knife bar adapted to the bone screw into the quick-release interface, uses the thumb and index finger to apply opposite forces, and pushes the two force-applying rods to operate the core rod, thereby realizing the tightening operation of the knife bar at the quick-release interface to the bone screw. Compared with the traditional screwdriver handle structure, the utility model provides more superior operating mechanics by setting two force-applying rods, making the force application smoother and more efficient, ensuring that the doctor can operate the torque handle comfortably and accurately, and improving the efficiency and quality of the operation.
[0011] (2) The utility model uses the twisting method of the upper and lower shells to achieve torque adjustment. When it is necessary to replace accessories, the user only needs to simply unscrew the upper and lower shells to easily replace the relevant accessories, which greatly improves the convenience of disassembly and assembly. This design not only improves the flexibility of operation, but also meets the needs of torque adjustment and accessory replacement during actual use. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of the upper shell and the lower shell in the utility model;
[0015] Figure 3 It is a schematic diagram of the enlarged structure of point A in the utility model;
[0016] Figure 4 It is a schematic diagram of the structure of the opening of the lower shell in the utility model;
[0017] In the figure: 1. upper shell; 2. lower shell; 3. end cap; 4. force rod; 5. fixing cylinder; 6. first ratchet; 7. opening; 8. core rod; 9. quick-release interface; 10. sleeve; 11. second ratchet; 12. butterfly spring sheet; 13. protective ring; 14. mounting cavity; 15. ball; 16. scale. DETAILED DESCRIPTION
[0018] 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.
[0019] Example
[0020] See also Figure 1-4 The utility model provides the following technical solutions: a medical torque handle, including an upper shell 1 and a lower shell 2, the upper shell 1 and the lower shell 2 are connected by screwing together through the threads at the bottom. At the top of the upper shell 1, there is an end cap 3, which is connected in a rotating manner. A force-applying rod 4 is fixed at the center position of the end cap 3, so that the user can conveniently perform force-applying operations; a fixed cylinder 5 is fixed inside the end cap 3, and the bottom end of this fixed cylinder 5 is evenly distributed with first ratchet teeth 6; at the same time, an opening 7 is provided at the bottom end of the lower shell 2, and a core rod 8 is provided at the inner center position of the lower shell 2. The shaft of this core rod 8 passes through the opening 7, and a quick-release interface 9 is configured at its bottom end for easy connection with the bone setting device. The screw-adapted knife rod is quickly inserted into the connection; a sleeve 10 is connected to the outside of the top rod body of the core rod 8 by means of a thread, and the top end of this core rod 8 is inserted into the interior of the fixed tube 5 to limit the core rod 8; at the top end of this sleeve 10, the second ratchet teeth 11 are evenly fixed, and these second ratchet teeth 11 are meshed with the first ratchet teeth 6 to form a stable connection, which is convenient for the subsequent torque adjustment; on the outside of the rod body of the core rod 8 at the bottom of the sleeve 10, butterfly spring sheets 12 are also evenly installed to provide the necessary elasticity and torque support.
[0021] In order to avoid excessive faults at the connection of the handle, which makes it inconvenient to twist the lower shell 2, in this embodiment, as a preferred technical solution of the utility model, a protective ring 13 is connected to the outer side of the top threaded connection of the lower shell 2, and the protective ring 13 and the lower shell 2 are an integrally formed structure, and the inner wall of the protective ring 13 fits the outer wall of the upper shell 1.
[0022] In order to reduce the friction between the core rod 8 and the opening 7, in this embodiment, as a preferred technical solution of the utility model, the lower shell 2 is located on the inner wall of the opening 7 and a mounting cavity 14 is evenly opened. A ball 15 is installed inside the mounting cavity 14, and the ball 15 is in contact with the core rod 8.
[0023] In order to facilitate medical personnel to accurately adjust the torque, in this embodiment, as a preferred technical solution of the utility model, a scale 16 is provided on one side of the outer wall of the upper shell 1.
[0024] In order to prevent the hands from slipping, in this embodiment, as a preferred technical solution of the utility model, the outer wall of the lower shell 2 is provided with anti-slip textures.
[0025] In summary, with the aid of the above technical solution of the utility model, when in use, the torque is first adjusted by twisting the lower shell 2, and the lower shell 2 and the upper shell 1 are threadedly connected. When the lower shell 2 and the upper shell 1 are gradually tightened, the lower shell 2 pushes the multiple butterfly spring pieces 12 upward, and the butterfly spring pieces 12 are deformed by external force due to the obstruction of the sleeve 10, and the second ratchet teeth 11 are pressed against the first ratchet teeth 6; the greater the tightening depth of the lower shell 2 and the upper shell 1, the greater the external force borne by the butterfly spring pieces 12, so that the second ratchet teeth 11 abut against the first ratchet teeth 6. The greater the force on the first ratchet 6; when in use, hold the upper shell 1 and the lower shell 2 of the handle with one hand, and then rotate the force rod 4 with the other hand, drive the fixed tube 5 to rotate with the help of the end cap 3, and use the first ratchet 6 at the bottom to clamp the second ratchet 11 and then drive the core rod 8 and the knife rod to screw the bone screw. When the torque reaches the limit, the first ratchet 6 will slide directly from the side surface of the second ratchet 11 and can no longer be tightened continuously to prevent excessive torque; when disassembling, the relevant accessories can be replaced by unscrewing the threaded connection between the upper shell 1 and the lower shell 2.
[0026] Finally, it should be noted that in the present utility model, unless otherwise clearly stipulated and limited, terms such as "installation", "setting", "connection", "fixation", and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.
[0027] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. 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 medical torque handle, comprising a handle, characterized in that: The handle comprises an upper shell (1) and a lower shell (2); the bottom end of the upper shell (1) and the top end of the lower shell (2) are connected by means of a thread; the top end of the upper shell (1) is rotatably connected to an end cap (3); a force application rod (4) is fixed at the center of the top end of the end cap (3); the end cap (3) is located inside the upper shell (1) and is fixedly connected to a fixing cylinder (5); a first ratchet (6) is evenly fixed at the bottom end of the fixing cylinder (5); an opening (7) is provided at the bottom end of the lower shell (2); a force application rod (4) is fixed at the center of the top end of the end cap (3); A core rod (8) is provided, the shaft of the core rod (8) passes through the opening (7), a quick-release interface (9) is provided at the bottom end of the shaft of the core rod (8), a sleeve (10) is threadedly connected to the outer side of the shaft at the top of the core rod (8), and the top end of the core rod (8) is inserted into the interior of the fixed tube (5), a second ratchet (11) is evenly fixed to the top end of the sleeve (10), the first ratchet (6) and the second ratchet (11) are meshed and connected, and a butterfly spring sheet (12) is evenly installed on the outer side of the shaft of the core rod (8) located at the bottom of the sleeve (10).
2. A medical torque handle according to claim 1, characterized in that: The outer side of the threaded connection at the top end of the lower shell (2) is connected to a protective ring (13), and the protective ring (13) and the lower shell (2) are an integrally formed structure, and the inner wall of the protective ring (13) fits the outer wall of the upper shell (1).
3. A medical torque handle according to claim 1, characterized in that: The lower shell (2) is evenly provided with a mounting cavity (14) on the inner wall of the opening (7), and a ball (15) is installed inside the mounting cavity (14), and the ball (15) is in contact with the core rod (8).
4. A medical torque handle according to claim 1, characterized in that: A scale (16) is provided on one side of the outer wall of the upper shell (1).
5. The medical torque handle according to claim 1, characterized in that: The outer wall of the lower shell (2) is provided with anti-slip patterns.