Combined cannula for intervertebral foramen endoscope operation

Abstract

The utility model relates to the technical field of surgical instruments, and discloses a combined cannula for an intervertebral foramen endoscope operation, which comprises a protective tube seat and a protective cannula connected with the protective tube seat, and the tube seat is disc-shaped and is rotatably connected with a working tube seat. A circular groove is formed in the bottom of the working pipe seat, a working sleeve is arranged in the circular groove and communicated with the working pipe seat, and the working sleeve is inserted into the protective sleeve. By means of the design that the working tube base is rotationally connected with the working sleeve, the round groove in the bottom of the working tube base wraps and protects the tube base, the operation sleeve can rotate flexibly in the using process, and the convenience and efficiency of an operation are improved. The working cannula can be flexibly inserted into the protective cannula, combined use is convenient, stability of the operation cannula is guaranteed, possible damage to cartilage tissue and vascular nerves in the operation process is effectively avoided, safety and accuracy of the operation are guaranteed, and the operation cannula has the advantages of being easy and convenient to operate, safe, reliable, accurate and efficient, and has wide application prospects. And the requirements of modern operations on high efficiency, safety and accuracy can be met, and wide market application prospects are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of surgical instruments, in particular to a combined cannula for percutaneous endoscopic lumbar discectomy (PELD). Background Technique

[0002] In PELD, the surgical cannula, as an important auxiliary tool, the rationality of its operation directly affects the smooth progress of the operation and the rehabilitation effect of patients. However, the traditional cannula for PELD has poor combined use effect of the working cannula and the protection cannula, is not simple and efficient enough when rotated, has insufficient functions, is easy to damage cartilage tissue and blood vessels and nerves, cannot meet the requirements of modern surgery for high efficiency, safety and precision, and affects the actual use.

[0003] Therefore, based on the above technical problems, it is necessary for those skilled in the art to develop a combined cannula for PELD. Content of the Utility Model

[0004] The purpose of the utility model is to provide a combined cannula for PELD to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] A technical scheme of a combined cannula for PELD includes a protection tube seat, a protection cannula is connected to the protection tube seat, the protection tube seat is arranged in a disc shape, the protection tube seat is communicated with the protection cannula, a working tube seat is arranged outside the protection tube seat, a circular groove is arranged at the bottom of the working tube seat, and the circular groove is sleeved outside the protection tube seat and is rotationally connected with the protection tube seat. A working cannula is arranged at the center of the circular groove, the working cannula is communicated with the working tube seat, and the working cannula is inserted into the protection cannula.

[0007] As a preferred technical scheme, positioning convex blocks are arranged on the inner wall of the circular groove, and positioning grooves are arranged along the mouth at the top of the protection tube seat. The positioning grooves are snap-connected with the positioning convex blocks.

[0008] As a preferred technical scheme, the inner diameter of the protection cannula is 7.6 mm and the outer diameter is 8.5 mm.

[0009] As a preferred technical scheme, the outer diameter of the working cannula is 7.5 mm and the inner diameter is 6.5 mm.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] (1) The present utility model relates to a combined cannula for percutaneous endoscopic lumbar discectomy (PELD). Through the rotational connection design between the working tube base and the working cannula, the circular groove at the bottom of the working tube base wraps the protection tube base, enabling the surgical cannula to rotate flexibly during use, thereby improving the convenience and efficiency of the surgery. The working cannula can be flexibly inserted into the protection cannula, facilitating combined use, ensuring the stability of the surgical cannula, effectively avoiding potential damage to cartilage tissue and blood vessels and nerves during the surgery, and guaranteeing the safety and accuracy of the surgery. This solution has the characteristics of simple operation, safety and reliability, precision and high efficiency, can meet the requirements of modern surgery for high efficiency, safety and precision, and has broad market application prospects.

[0012] (2) The present utility model relates to a combined cannula for percutaneous endoscopic lumbar discectomy (PELD). The inner wall of the circular groove is provided with positioning protrusions, and the top edge of the protection tube base is provided with positioning grooves. The positioning grooves and the positioning protrusions are snap-connected. This design enhances the connection stability between the working tube base and the protection tube base, enables the synchronous rotation of the protection cannula and the working cannula, and further improves the convenience and safety of the surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the overall structure of a combined cannula for percutaneous endoscopic lumbar discectomy (PELD);

[0014] Figure 2 is a schematic diagram of the disassembled structure of a combined cannula for percutaneous endoscopic lumbar discectomy (PELD);

[0015] Figure 3 is a schematic diagram of the three-dimensional structure of a combined cannula for percutaneous endoscopic lumbar discectomy (PELD).

[0016] In the reference numerals of the drawings: 1. protection tube base; 11. positioning groove; 2. protection cannula; 3. working tube base; 31. circular groove; 4. working cannula; 5. positioning protrusion. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The features and exemplary embodiments of various aspects of the present utility model will be described in detail below. In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. For those skilled in the art, the present utility model can be implemented without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present utility model by showing examples of the present utility model.

[0018] Such as Figure 1 、 Figure 2 and Figure 3As shown in the figure, the present utility model provides a combined cannula for percutaneous endoscopic lumbar discectomy (PELD) technical solution: including a protective tube seat 1, a protective cannula 2 is connected to the protective tube seat 1. The protective tube seat 1 serves as the support and connection part of the entire combined cannula. Its disc-shaped design not only ensures stability but also facilitates the cooperation with the working tube seat 3. The protective cannula 2 is closely connected and communicated with the protective tube seat 1 to form a channel for surgical instruments to enter the patient's body. The inner and outer diameter design of the protective cannula 2 (inner diameter is 7.6 mm, outer diameter is 8.5 mm) not only ensures sufficient strength but also is suitable for the insertion and operation of surgical instruments.

[0019] The working tube seat 3 serves as the main part of the surgical operation. The circular groove 31 provided at its bottom can be flexibly sleeved outside the protective tube seat 1 and is rotatably connected to the protective tube seat 1. This design enables the doctor to flexibly adjust the angle of the working tube seat 3 according to needs during the surgical process, improving the convenience and efficiency of the surgery. The working cannula 4 provided at the center of the circle of the circular groove 31 is connected and communicated with the working tube seat 3 and is inserted into the protective cannula 2. The inner and outer diameter design of the working cannula 4 (outer diameter is 7.5 mm, inner diameter is 6.5 mm) also ensures sufficient strength and is suitable for the insertion and operation of surgical instruments.

[0020] In order to further enhance the connection stability between the working tube seat 3 and the protective tube seat 1, a positioning convex block 5 is provided on the inner wall of the circular groove 31, and a positioning groove 11 matching the positioning convex block 5 is provided along the top edge of the protective tube seat 1. This clamping connection method of the positioning convex block 5 and the positioning groove 11 not only makes the connection between the working tube seat 3 and the protective tube seat 1 more stable but also enables the synchronous rotation of the protective cannula 2 and the working cannula 4, further improving the convenience and safety of the surgery.

[0021] For the combined cannula for percutaneous endoscopic lumbar discectomy (PELD) provided by the present utility model, during the surgical process, the doctor can, according to needs, flexibly adjust the angle and position of the working tube seat 3 to achieve precise operation of the surgical instruments in the patient's body. At the same time, since the working cannula 4 can be flexibly inserted into the protective cannula 2, it not only ensures the stability of the surgical cannula but also effectively avoids the possible damage to cartilage tissue and blood vessels and nerves during the surgical process, ensuring the safety and precision of the surgery.

[0022] The combined cannula for percutaneous endoscopic lumbar discectomy (PELD) provided by the present utility model has the characteristics of simple operation, safety and reliability, precision and high efficiency, can meet the requirements of modern surgery for high efficiency, safety and precision, and has a wide market application prospect.

[0023] The working principle and usage process of the present utility model: After the present utility model is installed, work according to the above implementation method until all work steps are completed.

[0024] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0026] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "set", "connected", "fixed", "swiveling connection", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; 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 communication inside two elements or the interaction relationship between two elements. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0027] According to the embodiments of the present utility model as described above, these embodiments do not describe all the details in detail, nor limit the present utility model to only the specific embodiments. Obviously, according to the above description, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can make good use of the present utility model and its modified use based on the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A combined cannula for transforaminal endoscopic surgery, characterized in that: The invention comprises a protective tube seat (1), to which a protective sleeve (2) is connected, the protective tube seat (1) is arranged in a disc shape, the protective tube seat (1) is connected to the protective sleeve (2), a working tube seat (3) is arranged outside the protective tube seat (1), a circular groove (31) is arranged at the bottom of the working tube seat (3), the circular groove (31) is sleeved outside the protective tube seat (1) and is rotatably connected to the protective tube seat (1), a working sleeve (4) is arranged at the center of the circular groove (31), the working sleeve (4) is connected to the working tube seat (3), and the working sleeve (4) is inserted into the protective sleeve (2).

2. The combined cannula for transforaminal endoscopic surgery according to claim 1, characterized in that: The inner wall of the circular groove (31) is provided with a positioning protrusion (5), and the top edge of the protection tube seat (1) is provided with a positioning groove (11), and the positioning groove (11) is snap-fitted and connected with the positioning protrusion (5).

3. The combined cannula for transforaminal endoscopic surgery according to claim 1, characterized in that: The inner diameter of the protective sleeve (2) is 7.6 mm, and the outer diameter is 8.5 mm.

4. The combined cannula for transforaminal endoscopic surgery according to claim 1, characterized in that: The working sleeve (4) has an outer diameter of 7.5 mm and an inner diameter of 6.5 mm.

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