A visual acetabular prosthesis placement device

Abstract

The present invention proposes a visual acetabular prosthesis implantation device. By setting a camera, the surgeon can understand the implantation of the acetabular cup in real time through the lens during the operation, and obtain a clear and intuitive understanding of the implantation position of the acetabular cup, thereby reducing the difficulty of the operation and accurately grasping the implantation position of the acetabular cup, thereby reducing the probability of the acetabular cup implantation deviation. By setting an optical fiber, the optical fiber provides supplementary light for the camera in real time to ensure a clear field of view. By setting a physiological saline flushing pipe and a negative pressure suction pipe, the blood and tissue debris around the camera can be cleaned in time, and the negative pressure suction pipe can timely suck out the discharged physiological saline and some debris from between the acetabular cup and the camera; since the two are located on opposite sides of the camera, a "water curtain" can be formed in front of the camera, which is convenient for real-time cleaning of impurities that interfere with the camera, thereby ensuring the clarity of the video image.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a visualized acetabulum prosthesis implantation device. Background Art

[0002] Indications for total hip replacement include osteoarthritis (OA), rheumatoid arthritis (RA), traumatic arthritis, severe osteonecrosis of the femoral head (ONFH), hip tumors, ankylosing spondylitis, etc. Its purpose is to replace the hip joint to eliminate pain, correct deformity, and rebuild a stable joint to restore and improve joint motion function.

[0003] The hip joint is the largest weight-bearing joint in the human body. The acetabulum is located in the pelvis and is hemispherical, housing the spherical femoral head.

[0004] During total hip replacement, placement of the acetabular prosthesis is a very important step.

[0005] The general process of acetabular prosthesis insertion is as follows: make an incision on the patient's body surface (divided into anterior approach, anterolateral approach, posterolateral approach, etc.), expose the hip joint, use an oscillating saw to remove the femoral head, use a file to pre-treat the acetabulum, insert the metal acetabulum, and place a liner (plastic, metal or ceramic) in the metal acetabulum.

[0006] The acetabular prosthesis is a metal cup. The outer surface of the prosthesis fits the pre-treated acetabulum, and a liner (plastic, metal or ceramic) is placed on the inner surface of the prosthesis. The liner contacts the spherical artificial femoral head on the femoral stem. There are two methods to fix the acetabular prosthesis to the pre-treated acetabulum. One is to use bone cement, that is, to use an acrylic polymer such as polymethyl methacrylate (PMMA). The other is to promote bone ingrowth, also known as osseointegration. Osseointegration is generally achieved by making a coating on the outer surface of the acetabular prosthesis. It is generally a porous and textured coating designed to simulate the microporous structure of normal human trabeculae, inducing new bone to grow onto the surface of the acetabular cup and integrate with the acetabular cup, so that the acetabular cup and bone become one. This type of fixation is very stable. Although it takes longer to heal than the bone cement type, it can be used longer than the bone cement type.

[0007] However, there are certain problems with the current acetabular prosthesis implantation. A good acetabular prosthesis implantation is to ensure that the bottom of the acetabular cup is as close as possible to the bottom of the ground acetabular socket while ensuring the correct angle of the acetabular prosthesis, so that the area of ​​the acetabular prosthesis covered by the bone is as high as possible, giving the acetabular prosthesis an initial stability and facilitating the patient's early functional exercise.

[0008] However, during the acetabular prosthesis insertion process, the presence of bone debris and surrounding soft tissue can interfere with the placement process. Currently, there are two methods for determining whether the acetabular prosthesis is properly inserted: one is the surgeon's "feel," which is subjective and unreliable. Another method is intraoperative fluoroscopy, but this requires separating the implant from the acetabular prosthesis. If the implant is found to be poorly inserted, the implant must be reinstalled. Repeated removal and installation can lead to deviations in the implant angle and damage to the interface between the surface coating and the bone, affecting the reliability of initial stability and the efficiency of subsequent bone ingrowth. Summary of the Invention

[0009] The purpose of the present invention is to provide a visual acetabular prosthesis implantation device that can monitor the position of the acetabular cup at all times during the implantation process, thereby facilitating the determination of the implantation position of the acetabulum.

[0010] To achieve the above-mentioned object, the present invention proposes a visual acetabular prosthesis placement device, comprising a device body and a camera; the camera is preset at the head end of the device body;

[0011] A connector is preset on the side of the head end of the device body to achieve detachable connection with the external acetabulum cup.

[0012] Preferably, the device body is a hollow tubular structure;

[0013] The camera is mounted in the device body, and the wires connected to the camera are arranged in the device body along the pipe direction of the device body;

[0014] A wire hole is preset on the side wall of the device body; the tail end of the wire passes through the wire hole to achieve electrical connection with the external power generation equipment and the external video equipment.

[0015] Preferably, a plurality of optical fibers are preset in the body of the device; one ends of the plurality of optical fibers are arranged at equal intervals around the periphery of the camera; the other ends of the optical fibers pass through the wire holes to achieve electrical connection with an external power generation device; and the end of one end of the optical fibers is arranged in parallel with the camera.

[0016] Preferably, a physiological saline flushing pipe is preset in the device body; one end of the physiological saline flushing pipe is mounted on the head end of the device body; the other end of the physiological saline flushing pipe passes through the wire hole and is connected to an external saline supply device.

[0017] Preferably, a negative pressure suction pipe is preset in the device body; one end of the negative pressure suction pipe is mounted on the head end of the device body, and the other end of the negative pressure suction pipe passes through the wire hole and is connected to an external negative pressure device.

[0018] Preferably, the physiological saline flushing pipe and the negative pressure suction pipe are both pipes with curved cross-sections;

[0019] The physiological saline flushing pipeline and the negative pressure suction pipeline are respectively arranged on two opposite sides of the camera.

[0020] Preferably, the tail end of the device body is detachably connected to a handle; the surface of the handle is provided with a plurality of grooves to facilitate gripping by the operator.

[0021] Preferably, the head end of the device body is detachably connected to the acetabular cup via the connector;

[0022] The outer surface of the acetabular cup is covered with a hydroxyapatite coating;

[0023] A hole is preset at the center of the acetabular cup.

[0024] Preferably, the camera is a wide-angle camera, and the field of view of the camera can observe the edge of the hole.

[0025] Preferably, the connecting piece is a buckle or a thread.

[0026] Compared with the prior art, the advantages of the present invention are as follows: the visualization acetabular prosthesis insertion device of the present invention is provided with a camera and a hole is provided at the center position of the corresponding acetabular cup, so that the surgeon can understand the insertion status of the acetabular cup in real time through the lens during the operation, and obtain a clear and intuitive understanding of the insertion position of the acetabular cup, thereby reducing the difficulty of the operation, and the insertion position of the acetabular cup can be accurately grasped, reducing the probability of deviation in the insertion of the acetabular cup.

[0027] By setting up optical fibers, the optical fibers can provide supplementary light for the camera in real time to ensure a clear field of view.

[0028] By setting up a saline flushing pipe and a negative pressure suction pipe, blood and tissue debris around the camera can be cleaned in time. The negative pressure suction pipe can promptly suck out the discharged saline and some debris from between the acetabular cup and the camera. Since the two are located on opposite sides of the camera, a "water curtain" can be formed in front of the camera, which is convenient for real-time cleaning of impurities that interfere with the camera, ensuring the clarity of the video image. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the overall structure of a visual acetabular prosthesis insertion device according to an embodiment of the present invention;

[0030] Figure 2 It is a front view of a visual acetabular prosthesis insertion device in an embodiment of the present invention. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be further described below.

[0032] like Figure 1 and Figure 2 As shown, the present invention proposes a visualized acetabular prosthesis insertion device, including a device body 1 and a camera 2; the camera 2 is preset at the head end of the device body 1; and a connector 8 for detachably connecting to an external acetabular cup 4 is preset on the side of the head end of the device body 1.

[0033] The device body 1 is a hollow tubular structure; the camera 2 is installed inside the device body 1, and the wire 3 connecting the camera 2 is arranged inside the device body 1 along the pipe direction of the device body 1; a wire hole is preset on the side wall of the device body 1; the tail end of the wire 3 passes through the wire hole to achieve electrical connection with the external power generation equipment and the external video equipment.

[0034] The front end of the device body 1 is detachably connected to the acetabular cup 4 via a connector 8. The outer surface of the acetabular cup 4 is covered with a hydroxyapatite coating to promote bone ingrowth and ultimately achieve stable fixation. The acetabular cup 4 has a pre-set hole at its center.

[0035] Camera 2 is a wide-angle camera 2, and the field of view of camera 2 can observe the edge of the hole.

[0036] By setting up a camera 2 and setting a hole at the center position of the corresponding acetabular cup 4, the surgeon can use the image projected onto the video device by the camera 2 during the operation to understand the placement of the acetabular cup 4 in real time, and obtain a clear and intuitive understanding of the placement position of the acetabular cup 4, thereby reducing the difficulty of the operation and accurately grasping the placement position of the acetabular cup 4, reducing the probability of deviation in the placement of the acetabular cup 4.

[0037] In this embodiment, a plurality of optical fibers 5 are preset in the device body 1; one end of the plurality of optical fibers 5 is arranged at equal intervals around the periphery of the camera 2; the other end of the optical fiber 5 passes through a wire hole to achieve electrical connection with an external power generation device; and the end of one end of the optical fiber 5 is arranged in parallel with the camera 2; by setting the optical fiber 5, the optical fiber 5 provides fill light for the camera 2 in real time to ensure a clear field of view.

[0038] In this embodiment, the device body 1 is provided with a saline flushing conduit 6; one end of the saline flushing conduit 6 is mounted at the head end of the device body 1; the other end of the saline flushing conduit 6 is connected to an external saline supply device through a wire hole. A negative pressure suction conduit 7 is also provided within the device body 1; one end of the negative pressure suction conduit 7 is mounted at the head end of the device body 1; the other end of the negative pressure suction conduit 7 is connected to an external negative pressure device through a wire hole.

[0039] By setting up a saline flushing pipe 6 and a negative pressure suction pipe 7, the blood and tissue debris around the camera 2 can be cleaned in time. The negative pressure suction pipe 7 can also promptly suck out the discharged saline and some debris from between the acetabular cup 4 and the camera 2 to ensure that the field of view is not blocked and the clarity of the video image is guaranteed.

[0040] like Figure 2 As shown, the physiological saline flushing pipe 6 and the negative pressure suction pipe 7 are both pipes with arc-shaped cross-sections; the main purpose is to increase the cleaning area, and the diameter of the negative pressure suction pipe 7 can also be increased accordingly to ensure that it will not be blocked by inhaled impurities.

[0041] The physiological saline flushing pipe 6 and the negative pressure suction pipe 7 are respectively arranged on the opposite sides of the camera 2. By spraying water at one end and absorbing water at the other end, a "water curtain" can be formed in front of the camera 2, which is convenient for real-time cleaning of impurities that interfere with the camera 2 and ensure the clarity of the video image.

[0042] In this embodiment, the connecting member 8 is a buckle or a thread, which facilitates the removal of the implant device from the acetabular cup 4 after the implantation is completed.

[0043] It should be noted that the camera 2 and the optical fiber 5 cannot protrude beyond the arc of the acetabular cup 4 to prevent damage during the insertion process.

[0044] The rear end of the device body 1 is detachably connected to a handle 9; a plurality of grooves are provided on the surface of the handle 9 to facilitate gripping by the operator.

[0045] The above description is merely a preferred embodiment of the present invention and does not limit the present invention in any way. Any person skilled in the art who, without departing from the scope of the present invention, makes any equivalent substitution, modification, or other changes to the technical solution and technical content disclosed in the present invention shall be deemed to be within the scope of the present invention and still fall within the scope of protection of the present invention.

Claims

1. A visual acetabular prosthesis placement device, characterized in that: It includes a device body and a camera; the camera is preset at the head end of the device body; The side of the head end of the device body is preset with a connector that can be detachably connected to the external acetabular cup; The device body is a hollow tubular structure; The camera is mounted in the device body, and the wires connected to the camera are arranged in the device body along the pipe direction of the device body; A wire hole is preset on the side wall of the device body; the tail end of the wire passes through the wire hole to achieve electrical connection with the external power generation equipment and the external video equipment; A saline flushing pipe is preset in the device body; one end of the saline flushing pipe is mounted on the head end of the device body; the other end of the saline flushing pipe passes through the wire hole and is connected to an external saline supply device; A negative pressure suction pipe is preset in the device body; one end of the negative pressure suction pipe is mounted on the head end of the device body, and the other end of the negative pressure suction pipe passes through the wire hole and is connected to an external negative pressure device; The physiological saline flushing pipe and the negative pressure suction pipe are both pipes with arc-shaped cross-sections; The physiological saline flushing pipe and the negative pressure suction pipe are respectively arranged on two opposite sides of the camera; the head end of the device body is detachably connected to the acetabulum cup through the connecting piece; The outer surface of the acetabular cup is covered with a hydroxyapatite coating; A hole is preset at the center of the acetabular cup.

2. The visualized acetabular prosthesis placement device according to claim 1, characterized in that: The device body is preset with multiple optical fibers; one ends of the multiple optical fibers are arranged at equal intervals around the periphery of the camera; the other ends of the optical fibers pass through the wire holes to achieve electrical connection with external power generation equipment; and the end of one end of the optical fibers is arranged in parallel with the camera.

3. The visualized acetabular prosthesis placement device according to claim 1, characterized in that: The tail end of the device body is detachably connected to a handle; a surface of the handle is provided with a plurality of grooves for easy gripping by an operator.

4. The visualized acetabular prosthesis placement device according to claim 1, characterized in that: The camera is a wide-angle camera, and the field of view of the camera can observe the edge of the hole.

5. The visualized acetabular prosthesis placement device according to claim 1, characterized in that: The connecting piece is a buckle or a thread.

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