A resector holder

Abstract

The utility model discloses a resecter holds and takes ware belongs to medical instrument technical field. The utility model includes holding and taking stem, fixed establishment and height adjusting mechanism. Fixed establishment contains the fixed rod combination of holding and taking stem one end screw connection, and through the screwing can lock tightly or loosen the resecter, and the height adjusting mechanism contains the knob combination of rotatablely being covered in the outside of holding and taking stem and holding and taking gear lever of holding and taking stem transmission connection, and knob combination and holding and taking gear lever transmission cooperation, and the rotation knob combination can drive holding and taking gear lever to carry holding and taking stem axial movement to adjust height to move to adjust height. The utility model discloses the key improvement lies in the appearance and size of knob combination have carried out the ergonomics optimization, has promoted the operation hand feeling, also has carried out the optimization to the tooth part structure of holding and taking gear lever, makes its transmission with knob combination be more closely, effectively prevents the slippage, and the adjustment is more smooth.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a gripper for holding and adjusting surgical instruments in minimally invasive surgery, and in particular a resection instrument gripper used in conjunction with a resection instrument. Background Technology

[0002] In minimally invasive surgeries in fields such as orthopedics and neurosurgery, the surgical space is narrow and the operational precision requirements are extremely high. As a commonly used surgical instrument, the resection device usually needs to be held, positioned, and operated with the help of a special holder. Such holders in the existing technology usually have basic holding functions and simple height adjustment mechanisms.

[0003] However, in actual clinical applications, these grippers still have several obvious defects. Regarding adjustment performance, their height adjustment mechanisms mostly employ simple threaded or gear-driven structures. These structures suffer from excessive gear meshing clearance and unstable transmission, leading to wobbling during adjustment and affecting positioning accuracy. More seriously, under stress, they are prone to slippage or tooth skipping, i.e., sudden transmission failure, causing unexpected changes in the already adjusted height. This not only affects surgical efficiency but also poses potential surgical risks. Furthermore, from an ergonomic perspective, the gripper's adjustment knobs are often not adequately designed. Considering the comfort of prolonged hand operation, poor design of its shape, size, or surface texture can lead to unstable grip by doctors when their hands are wet, such as when they are contaminated with saline or blood, or premature fatigue of hand muscles during prolonged surgery, thus affecting the stability and accuracy of the operation. Finally, in terms of structural reliability, the connections between components, such as the connection between rods and knobs, and threaded connections, if only conventional welding or threaded mating is used, problems such as loosening of connections, loosening of threads, or fatigue fracture of weld points may occur under long-term repeated use and high-temperature and high-pressure sterilization environments, affecting the service life and reliability of the instrument.

[0004] Therefore, there is an urgent need in the field for a gripper that can overcome the above-mentioned defects, which should have a tight transmission and no shaking or slippage adjustment mechanism, ergonomic operating parts, and a more reliable and durable overall structure. Utility Model Content

[0005] The purpose of this invention is to overcome the above-mentioned shortcomings of the prior art and provide a resection tool holder that is precisely adjustable, reliably driven, comfortable to operate, and firmly connected.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A resecting device holder includes a holding rod, a fixing mechanism, and a height adjustment mechanism. The fixing mechanism includes a fixing rod assembly threadedly connected to one end of the holding rod; rotating this fixing rod assembly can lock or release the resecting device to the end of the holding rod. The height adjustment mechanism includes a knob assembly rotatably sleeved on the outside of the holding rod and a holding gear rod pulverizedly connected to the holding rod; the knob assembly and the holding gear rod are pulverizedly engaged, and rotating the knob assembly drives the holding gear rod, thereby causing the holding rod to move axially, thus adjusting the height of the resecting device.

[0008] As a further improvement of this utility model, one end of the holding rod extends into the knob assembly and is fixedly connected by laser wire filling welding process. After welding, the weld is ground to ensure smoothness.

[0009] As a further improvement of this utility model, the shape and structure of the knob assembly have been optimized by ergonomics to make it fit the hand better, improving grip comfort and ease of operation.

[0010] As a further improvement of this utility model, the meshing tooth surfaces of the holding gear rod and the internal gear structure of the knob assembly are designed to achieve close transmission, so as to effectively prevent slippage during transmission and ensure smooth adjustment.

[0011] As a further improvement of this utility model, the threaded connection between the fixing rod assembly and the holding rod is coated with thread-locking adhesive to prevent loosening during use.

[0012] As a further improvement of this utility model, the gripper also includes a tail cap and a silicone handle, the silicone handle being fitted onto the outside of the handle core.

[0013] As a further improvement of this utility model, the holder includes at least one fixed connection structure achieved by a riveting process to enhance the overall structural stability.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention utilizes an optimized transmission mechanism consisting of a knob assembly and a holding gear rod to achieve tight engagement, effectively eliminating the risk of shaking and slippage during adjustment and ensuring precise positioning and holding of the height.

[0016] This invention optimizes the knob assembly in terms of ergonomics, significantly improving the doctor's grip feel, reducing fatigue during prolonged operation, and enhancing the stability and efficiency of surgical procedures.

[0017] This invention comprehensively utilizes a variety of advanced connection technologies, such as laser wire filler welding, thread sealant anti-loosening, and riveting, which significantly improves the strength and reliability of key connection parts of the product, ensuring the stable performance and safe use of the instrument under long-term repeated use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic cross-sectional view of the present invention.

[0020] In the diagram: 1. Fixing rod assembly; 2. Knob assembly; 4. Tail cap; 5. Silicone handle; 6. Handle inner core; 7. Holding rod; 8. Holding gear rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] like Figures 1-2 As shown, a resection tool holder includes a holding rod 7, a fixing mechanism, and a height adjustment mechanism. The fixing mechanism includes a fixing rod assembly 1 threadedly connected to one end of the holding rod 7. By rotating the fixing rod assembly 1, the resection tool can be locked to or released from the end of the holding rod 7. The height adjustment mechanism includes a knob assembly 2 rotatably sleeved on the outside of the holding rod 7 and a holding gear rod 8 that is pulsatorically connected to the holding rod 7. The knob assembly 2 and the holding gear rod 8 are pulsatorically engaged. When the knob assembly 2 is rotated, the holding gear rod 8 is driven, thereby causing the holding rod 7 to move axially, thus realizing the height adjustment of the resection tool.

[0024] One end of the holding rod 7 extends into the knob assembly 2 and is fixedly connected by laser wire welding. After welding, the weld is ground to ensure smoothness. The shape of the knob assembly 2 is ergonomically optimized to fit the hand better, improving grip comfort and ease of operation. The meshing tooth surfaces of the holding gear rod 8 and the internal gear structure of the knob assembly 2 are designed to achieve tight transmission, effectively preventing slippage during transmission and ensuring smooth adjustment. The threaded connection between the fixing rod assembly 1 and the holding rod 7 is coated with thread-locking adhesive to prevent loosening during use. The holder also includes a tail cap 4 and a silicone handle 5. The silicone handle 5 is fitted outside the handle core 6. The holder includes at least one fixed connection structure achieved by a riveting process to enhance the overall structural stability.

[0025] In a preferred embodiment, the core structure of the excision device holder of the present invention includes a holding rod 7, a fixing rod assembly 1, a knob assembly 2, and a holding gear rod 8.

[0026] The usage process of this utility model is as follows:

[0027] First, the excision device is installed and fixed. The connecting part of the excision device is placed at the front end of the holding rod 7. Then, the doctor screws the fixing rod assembly 1 so that it is pushed into the front end of the holding rod 7 through the threaded connection, thereby firmly locking the excision device to the end of the holding rod 7. During the final assembly, thread-locking adhesive has been applied to the threaded connection between the fixing rod assembly 1 and the holding rod 7, which can effectively prevent the threads from loosening due to vibration during the operation and ensure the reliability of the fixation.

[0028] Secondly, the height of the resection device can be adjusted. After the resection device is installed, if the position of its end needs to be finely adjusted, the doctor can achieve this by rotating the knob assembly 2 left and right. The knob assembly 2 is rotatably fitted onto the outside of the holding rod 7. It has a precision gear structure inside, which meshes with the teeth on the holding gear rod 8. When the knob assembly 2 is rotated, it drives the holding gear rod 8 to rotate. The holding gear rod 8 and the holding rod 7 are connected by a threaded pair or keyway, thereby converting the rotational motion of the holding gear rod 8 into the precise axial linear motion of the holding rod 7. Ultimately, this drives the resection device fixed at its front end to rise or fall, achieving stepless height adjustment. In this embodiment, the shape of the knob assembly 2 has been ergonomically optimized, making it comfortable to hold, non-slip, and easy to operate precisely. The teeth of the holding gear rod 8 have been optimized to mesh tightly with the knob assembly 2, ensuring smooth and stable transmission and effectively preventing slippage and shaking during the adjustment process.

[0029] Finally, there is the holding and operation. Throughout the procedure, the surgeon can hold the silicone handle 5 and operate from there. The silicone handle 5 is fitted onto the outside of the handle core 6, providing a soft, non-slip, and comfortable grip surface, which helps reduce fatigue during long surgeries. The tail cap 4 closes the tail of the gripper, making the overall structure more complete.

[0030] Explanation of key structures:

[0031] The tail end of the holding rod 7 is inserted into the knob assembly 2 and fixed by laser filler wire welding. After welding, the joint is polished to ensure smoothness. This connection method has high strength and small deformation. In addition, some parts inside the holder are fixed by riveting process, which further ensures the stability and durability of the overall structure.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A resection tool holder, comprising a holding rod (7), characterized in that, Also includes: The fixing mechanism includes a fixing rod assembly (1) that is threaded to one end of the holding rod (7) for locking or releasing the cutter; The height adjustment mechanism includes a knob assembly (2) rotatably sleeved on the outside of the holding rod (7) and a holding gear rod (8) pulverically connected to the holding rod (7). The knob assembly (2) and the holding gear rod (8) are pulverically engaged to drive the holding rod (7) to move axially.

2. The excision device holder according to claim 1, characterized in that, One end of the holding rod (7) extends into the knob assembly (2) and is fixed by laser wire welding.

3. The excision device holder according to claim 1, characterized in that, The knob assembly (2) has an ergonomically optimized shape suitable for holding.

4. The excision device holder according to claim 1, characterized in that, The tooth surfaces of the holding gear rod (8) that mesh with the gear structure inside the knob assembly (2) are configured to achieve close transmission.

5. A resection tool holder according to claim 1, characterized in that, The threaded connection between the fixed rod assembly (1) and the holding rod (7) is coated with thread-locking adhesive.

6. The resection tool holder according to claim 1, characterized in that, It also includes a tail cap (4) and a silicone handle (5), the silicone handle (5) being fitted onto the outside of the handle core (6).

7. A resection tool holder according to claim 1, characterized in that, The holder includes at least one fixed connection structure formed by a riveting process.

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