Contact pressure measuring device in total ankle replacement surgery

Abstract

The utility model provides a contact pressure measuring device in total ankle joint replacement surgery, which relates to the technical field of total ankle joint replacement surgery, and comprises a prosthesis, a plantar flexion sensor is fixedly connected in the prosthesis, a median position pressure sensor is fixedly mounted in the prosthesis, a dorsal extension sensor is fixedly mounted in the prosthesis, and the median position pressure sensor and the dorsal extension sensor are fixedly connected in the prosthesis. A middle hole is formed in the upper face of the prosthesis, a tibia side assembly connecting block is fixedly installed on the upper face of the prosthesis, an inserting groove is formed in the upper face of the tibia side assembly connecting block, and a limiting groove is formed in the edge of the tibia side assembly connecting block. Through the prosthesis, the plantar flexion pressure sensor, the median position pressure sensor and the dorsal extension pressure sensor, the contact pressure of inner and outer joints of a patient during plantar flexion, median position and dorsal extension can be detected, so that the accuracy of an operation is improved, and the difficulty of the operation is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of total ankle replacement surgery technology, and in particular to a contact pressure measuring device in total ankle replacement surgery. Background Technology

[0002] Total ankle replacement surgery, also known as ankle arthroplasty, is a surgical procedure performed on a damaged ankle joint to restore its function by replacing the damaged portion of the ankle joint with an artificial joint.

[0003] In total ankle replacement surgery, part of the distal tibia and talus needs to be removed before an artificial prosthesis is installed. However, current total ankle replacement techniques cannot directly assess soft tissue balance or measure the contact pressure between the medial and lateral joints, often requiring the surgeon's clinical experience to make decisions. This results in excessive surgical difficulty and compromised precision, necessitating urgent improvement. Utility Model Content

[0004] The purpose of this utility model is to solve the technical problems mentioned in the background art.

[0005] This utility model adopts the following technical solution: a contact pressure measuring device in total ankle replacement surgery, including a prosthesis, a plantar flexion sensor fixedly connected inside the prosthesis, a midline pressure sensor fixedly installed inside the prosthesis, a dorsiflexion sensor fixedly installed inside the prosthesis, a central hole opened on the top of the prosthesis, a tibial side component connecting block fixedly installed on the top of the prosthesis, a slot opened on the top of the tibial side component connecting block, a limiting groove opened on the edge of the tibial side component connecting block, and a talus side component connecting groove opened on the bottom of the prosthesis.

[0006] Preferably, the plantar flexion pressure sensor is installed at a plantar flexion angle of 10°. This allows the plantar flexion pressure sensor to better detect the pressure on the ankle joint during plantar flexion.

[0007] Preferably, the midline pressure sensor is installed at the midline of the prosthesis. This allows the midline pressure sensor to better detect the pressure experienced by the ankle joint when it is in the midline position.

[0008] Preferably, the dorsiflexion pressure sensor is installed at a dorsiflexion angle of 10°. This allows the dorsiflexion pressure sensor to better detect the pressure experienced by the ankle joint during dorsiflexion.

[0009] Preferably, the prosthesis has a dorsiflexion arc surface at the front and a plantarflexion arc surface at the rear. This allows the prosthesis to provide ample space for ankle dorsiflexion and plantarflexion movements.

[0010] Preferably, the surface of the talus-side component connecting groove is arc-shaped. This allows the prosthesis to connect more effectively with the talus-side component.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] In this invention, the pressure of the medial and lateral joints in plantar flexion, midline, and dorsiflexion can be detected by the prosthesis, plantar flexion pressure sensor, midline pressure sensor, and dorsiflexion pressure sensor, thereby improving the accuracy of the surgery and greatly reducing the difficulty of the surgery. Attached Figure Description

[0013] Figure 1 This invention provides a schematic diagram of a contact pressure measuring device for total ankle replacement surgery;

[0014] Figure 2 A top view of a contact pressure measuring device for total ankle replacement surgery is provided for this utility model;

[0015] Figure 3 A cross-sectional view of a prosthesis for a contact pressure measuring device in total ankle replacement surgery is provided for this utility model.

[0016] Figure 4 This invention provides an exploded view of the prosthesis interior of a contact pressure measuring device used in total ankle replacement surgery.

[0017] Legend:

[0018] 1. Prosthesis; 2. Plantar flexion pressure sensor; 3. Midline pressure sensor; 4. Dorsiflexion pressure sensor; 5. Intermediate hole; 6. Tibial side component connector; 7. Slot; 8. Limiting groove; 9. Taurimal side component connector groove; 10. Dorsiflexion arc surface; 11. Plantar flexion arc surface. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0021] Example

[0022] Please see Figure 1-4This utility model provides a technical solution: a contact pressure measuring device for total ankle replacement surgery, including a prosthesis 1. A plantar flexion sensor, a midline pressure sensor 3, and a dorsiflexion sensor are fixedly installed inside the prosthesis 1. A central hole 5 is provided on the top of the prosthesis 1, allowing sensor data to be transmitted to a receiving device and a display via the central hole 5 and connecting wires, thus enabling observation of the sensor data. A tibial side component connecting block 6 is fixedly installed on the top of the prosthesis 1. A slot 7 is provided on the top of the tibial side component connecting block 6, and a limiting groove 8 is provided on the edge of the tibial side component connecting block 6, allowing the prosthesis 1 to better connect with the tibial side component through the tibial side component connecting block 6. A talus side component connecting groove 9 is provided on the bottom of the prosthesis 1. The prosthesis 1 can be connected to the talus-side component. The plantar flexion pressure sensor 2 is installed at a plantar flexion angle of 10°, which allows it to better detect the pressure on the ankle joint during plantar flexion. The midline pressure sensor 3 is installed at the midline of the prosthesis 1, which allows it to better detect the pressure on the ankle joint during midline position. The dorsiflexion pressure sensor 4 is installed at a dorsiflexion angle of 10°, which allows it to better detect the pressure on the ankle joint during dorsiflexion. The prosthesis 1 has a dorsiflexion arc surface 10 at the front and a plantar flexion arc surface 11 at the rear, which provides sufficient space for dorsiflexion and plantarflexion movements of the ankle joint. The surface of the talus-side component connecting groove 9 is arc-shaped, which allows the prosthesis 1 to connect better with the talus-side component.

[0023] Working principle: First, the prosthesis 1 is connected to the tibial side assembly via the tibial side assembly connecting block 6. At the same time, the talar side assembly connecting groove 9 of the prosthesis 1 is connected to the talar pressure side assembly. The sensor is connected to the receiving device and the display via the connecting wire through the middle hole 5. At this time, the plantar flexion pressure sensor 2 can detect the pressure on the ankle joint during plantar flexion, the midline pressure sensor 3 can detect the pressure on the ankle joint during midline position, and the dorsiflexion pressure sensor 4 can detect the pressure on the ankle joint during dorsiflexion.

[0024] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A contact pressure measuring device for total ankle replacement surgery, comprising a prosthesis (1), characterized in that: The prosthesis (1) is internally fixedly connected to a plantar flexion pressure sensor (2), the prosthesis (1) is internally fixedly installed with a midline pressure sensor (3), the prosthesis (1) is internally fixedly installed with a dorsiflexion pressure sensor (4), the prosthesis (1) has a central hole (5) on its upper surface, the prosthesis (1) has a tibial side component connecting block (6) fixedly installed on its upper surface, the tibial side component connecting block (6) has a slot (7) on its upper surface, the tibial side component connecting block (6) has a limiting groove (8) on its edge, and the prosthesis (1) has a talus side component connecting groove (9) on its lower surface.

2. The contact pressure measuring device for total ankle replacement surgery according to claim 1, characterized in that: The plantar flexion pressure sensor (2) is installed at a plantar flexion angle of 10°.

3. The contact pressure measuring device for total ankle replacement surgery according to claim 1, characterized in that: The installation angle of the pressure sensor (3) is the center position of the prosthesis (1).

4. The contact pressure measuring device for total ankle replacement surgery according to claim 1, characterized in that: The installation angle of the back extension pressure sensor (4) is 10°.

5. The contact pressure measuring device for total ankle replacement surgery according to claim 1, characterized in that: The prosthesis (1) has a dorsal arc surface (10) at the front and a plantar flexion arc surface (11) at the back.

6. The contact pressure measuring device for total ankle replacement surgery according to claim 1, characterized in that: The surface of the talus-side component connecting groove (9) is arc-shaped.

Images