Medical hollow ejector rod

Abstract

The utility model relates to a medical hollow ejector rod which comprises a triangular prism body and an ejector head body, and the triangular prism body and the ejector head body are of an integrated structure. Due to the adoption of the integrated structure of the triangular prism body and the ejector head body, the overall strength of the ejector rod is enhanced, and the stability of the ejector rod in the operation process is also improved. Due to the integrated structure, connecting points between parts are reduced, the surgical risk caused by connection looseness or fracture is reduced, and smooth operation is ensured; the inclined surface design of the top end of the ejector head body enables the ejector rod to be matched with a front fork positioner for intraoperative positioning, and accurate resetting is achieved. And the inclined surfaces with different angles can be selected according to different fracture positions, so that the flexibility and adaptability of an operation are improved. By means of the design, a doctor can judge the fracture condition more accurately in an operation, a more reasonable treatment scheme is formulated, and the device has the advantages of being high in operation accuracy, high in top rod stability, convenient to insert a guide needle and convenient for the doctor to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a hollow push rod for precise fracture reduction and auxiliary positioning. Background Art

[0002] Currently, most tibial plateau fractures are treated with open surgery, which involves reduction and internal fixation under direct vision. This surgery requires opening the joint capsule and causes significant trauma to the joint.

[0003] In order to reduce the damage to the joints caused by surgery, the operation can be performed with the assistance of arthroscopy. First, the collapsed fracture is located with a cruciate ligament locator under the arthroscopy, a guide needle is inserted, and a suitable push rod is placed along the guide needle. The push rod is struck to reduce the fracture.

[0004] Therefore, there is an urgent need for a hollow push rod that can accurately reduce and assist in positioning the fracture. Utility Model Content

[0005] In order to solve the problems of the prior art, the utility model provides a medical hollow ejector rod.

[0006] In order to solve the above technical problems, the present invention is implemented through the following technical solutions: a medical hollow ejector rod, comprising a triangular prism and a ejector head body, the triangular prism and the ejector head body being an integrated structure, the triangular prism being located at one end of the ejector head body, the top end of the ejector head body being provided with an inclined surface, the angle between the inclined surface and the horizontal plane being set to any one of 30 degrees, 45 degrees and 75 degrees, the interior of the triangular prism being provided with a first hollow hole, and the interior of the ejector head being provided with a second hollow hole.

[0007] Preferably, the first hollow hole is connected to the second hollow hole for inserting a guide needle into the inner wall for positioning. The guide needle is placed in the center of the collapsed fracture, and then a push rod is placed along the guide needle. Combined with the inclined surface, this helps to achieve precise reduction.

[0008] Preferably, the cross-section of the triangular prism is set to an equilateral triangle, which is used to make the inclined surface parallel to the articular surface. The bottom surface of the triangular prism is provided with a pattern identification mark. The vertex of the triangular prism is located on the vertical line of the forked ligament locator. The bottom surface of the triangular prism is parallel to the osteotomy plane, which is used to prevent the rotation of the push rod so that the cross-section of the push head is not parallel to the articular surface.

[0009] The beneficial effects of the utility model are:

[0010] 1. The utility model adopts an integrated structure of a triangular prism and a mandrel. This design not only enhances the overall strength of the mandrel, but also improves its stability during surgery. The integrated structure reduces the number of connection points between components, reduces the surgical risks caused by loose or broken connections, and ensures the smooth progress of the operation; the inclined surface design at the top of the mandrel enables the mandrel to cooperate with the front fork locator for intraoperative positioning and achieve precise reduction. Inclined surfaces of different angles can be selected according to the location of the fracture, which improves the flexibility and adaptability of the surgery. This design helps doctors to more accurately judge the fracture situation during surgery and formulate more reasonable treatment plans. It has the advantages of high surgical accuracy, strong stability of the mandrel, easy guide needle insertion, and convenient operation for doctors.

[0011] 2. The hollow hole design inside the medical hollow ejector pin allows for smooth insertion of a guide needle, facilitating surgery. The insertion of the guide needle helps the surgeon more accurately locate the fracture site, improving surgical precision. The hollow hole design also reduces the weight of the ejector pin, making it easier for the surgeon to manipulate it during surgery. The special patterned identification markings and bottom design of the medical hollow ejector pin help the surgeon better identify and manipulate the ejector pin during surgery, preventing the ejector pin from rotating and causing the cross-section of the ejector head to become non-parallel to the joint surface, further improving surgical precision and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0013] Figure 2 It is a schematic diagram of the explosion structure of the utility model.

[0014] Figure 1-2 Middle: 1, triangular prism; 11, first hollow hole; 2, plug body; 21, inclined surface; 22, second hollow hole. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] like Figure 1-2The medical hollow ejector rod shown includes a triangular prism 1 and a plug body 2. The triangular prism 1 and the plug body 2 are an integral structure. The triangular prism 1 is located at one end of the plug body 2. The top of the plug body 2 is provided with an inclined surface 21. The angle between the inclined surface 21 and the horizontal plane is set to any one of 30 degrees, 45 degrees and 75 degrees. The interior of the triangular prism 1 is provided with a first hollow hole 11, and the interior of the plug body 2 is provided with a second hollow hole 22.

[0017] During use. Preoperative preparation: The doctor first selects a medical hollow ejector rod with an appropriate angle based on the patient's fracture condition. Check the integrity of the ejector rod to ensure that the integrated structure of the triangular prism body 1 and the ejector head 2 is stable and free of damage.

[0018] Positioning the guide needle: The fork locator is used to locate the patient's fracture site and determine the insertion position and angle of the guide needle. The doctor then inserts the guide needle into the center of the collapsed fracture according to the determined position and angle.

[0019] Insert the ejector rod: Along the inserted guide needle, the doctor slowly pushes the medical hollow ejector rod in, ensuring that the inclined surface 21 of the ejector head 2 is parallel to the joint surface. During the insertion process, pay attention to maintaining the stability of the ejector rod to avoid rotation or deviation.

[0020] Adjustment and fixation: Once the rod is fully inserted, the surgeon fine-tunes its position and angle based on the patient's specific needs to ensure accurate reduction of the fracture. The surgeon then secures the rod in place using an appropriate fixation device to prevent it from moving or falling out.

[0021] Postoperative Examination: After the rod is placed and fixed, the doctor will conduct a postoperative examination to ensure that the fracture has been accurately reduced and the rod is correctly positioned and stable. The doctor will also monitor the patient's response and recovery so that the treatment plan can be adjusted promptly.

[0022] The first hollow hole 11 is connected to the second hollow hole 22, and is used for inserting a guide pin into the inner wall for positioning. The guide pin is placed in the center of the collapsed fracture, and then a push rod is placed along the guide pin. Combined with the inclined surface 21, it helps to accurately reposition. The angle between the inclined surface 21 and the horizontal plane can be set to any one of 30 degrees, 45 degrees and 75 degrees, and is used for positioning using an anterior fork locator during surgery. According to the different anterior and posterior positions of the fracture, guide pins at different angles are set, and push rods at different angles are used. The cross section of the triangular prism 1 is set to an equilateral triangle, which is used to make the inclined surface 21 parallel to the articular surface. A pattern identification mark is set on the bottom surface of the triangular prism 1. The vertex of the triangular prism 1 is located on the vertical line of the forked ligament locator, and the bottom surface of the triangular prism 1 is parallel to the osteotomy plane, which is used to prevent the push rod from rotating so that the cross section of the push head is not parallel to the articular surface.

[0023] In summary, the present invention has the following operating principles: The design of the medical hollow ejector fully considers the need for precise reduction of fractures during orthopedic surgery. Its triangular prism 1 and ejector head 2 are integrated into a single structure, ensuring the overall strength and stability of the ejector. The cross-section of the triangular prism 1 is an equilateral triangle. This design not only increases the ejector's stability but also helps maintain the inclined surface 21 of the ejector head 2 parallel to the joint surface during surgery, thereby ensuring the accuracy of the reduction operation.

[0024] The top of the mandrel 2 is provided with an inclined surface 21. The angle between the inclined surface 21 and the horizontal plane can be set to 30 degrees, 45 degrees, or 75 degrees depending on the location of the fracture. This design allows the mandrel to be positioned in conjunction with the fork positioner during surgery. Depending on the anterior and posterior position of the fracture, mandrels at different angles can be used to achieve precise reduction of the fracture site.

[0025] The first hollow hole 11 provided inside the triangular prism 1 is connected to the second hollow hole 22 inside the head body 2. This design allows the guide needle to smoothly penetrate into the push rod. Through the positioning function of the guide needle, the doctor can accurately place the push rod in the center position of the collapsed fracture to achieve precise reduction.

[0026] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A medical hollow ejector rod, comprising a triangular prism (1) and an ejector head (2), characterized in that: The triangular prism (1) and the mandrel (2) are an integrated structure. The triangular prism (1) is located at one end of the mandrel (2). The top end of the mandrel (2) is provided with an inclined surface (21). The angle between the inclined surface (21) and the horizontal plane is set to any one of 30 degrees, 45 degrees and 75 degrees. The interior of the triangular prism (1) is provided with a first hollow hole (11), and the interior of the mandrel (2) is provided with a second hollow hole (22).

2. The medical hollow ejector rod according to claim 1, characterized in that: The first hollow hole (11) is connected to the second hollow hole (22) and is used for inserting a guide needle into the inner wall for positioning. The guide needle is placed in the center of the collapsed fracture, and then a push rod is placed along the guide needle. Combined with the inclined surface (21), it helps to accurately reduce the fracture.

3. The medical hollow ejector rod according to claim 1, characterized in that: The cross section of the triangular prism (1) is set to an equilateral triangle, which is used to make the inclined surface (21) parallel to the articular surface. The bottom surface of the triangular prism (1) is provided with a pattern identification mark. The vertex of the triangular prism (1) is located on the vertical line of the forked ligament locator. The bottom surface of the triangular prism (1) is parallel to the osteotomy plane, which is used to prevent the rotation of the push rod so that the cross section of the push rod is not parallel to the articular surface.

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