CN-224220296-U - Contact pressure measuring device in total ankle joint replacement operation

Abstract

The utility model provides a contact pressure measuring device in total ankle replacement operation, which relates to the technical field of total ankle replacement operation and comprises a prosthesis, wherein a plantar flexion sensor is fixedly connected inside the prosthesis, a middle-position pressure sensor is fixedly arranged inside the prosthesis, a back extension sensor is fixedly arranged inside the prosthesis, a middle hole is formed in the upper surface of the prosthesis, a tibial component connecting block is fixedly arranged in the upper surface of the prosthesis, a slot is formed in the upper surface of the tibial component connecting block, and a limit groove is formed in the edge of the tibial component connecting block.

Inventors

• MA XIN
• WANG XU
• YU JIAN
• JIANG JIA
• HUANG JIAZHANG
• ZHANG CHAO
• LV JINYANG
• LI ZHONGHUA

Assignees

• 上海市第六人民医院

Dates

Publication Date

20260512

Application Date

20250210

Claims (6)

1. 1. The utility model provides a contact pressure measuring device in total ankle joint replacement operation, includes prosthesis (1), its characterized in that the inside fixedly connected with plantar flexion pressure sensor (2) of prosthesis (1), the inside fixed mounting of prosthesis (1) has normal middle position pressure sensor (3), the inside fixed mounting of prosthesis (1) has back of the body to stretch pressure sensor (4), intermediate hole (5) have been seted up on prosthesis (1), the fixed mounting of prosthesis (1) has tibia side subassembly connecting block (6) above, slot (7) have been seted up on tibia side subassembly connecting block (6), spacing groove (8) have been seted up at the edge of tibia side subassembly connecting block (6), talus side subassembly connecting slot (9) have been seted up below prosthesis (1).
2. 2. The contact pressure measuring device in total ankle replacement surgery according to claim 1, wherein the plantar flexion pressure sensor (2) is installed at an angle of 10 degrees plantar flexion.
3. 3. The device for measuring contact pressure in total ankle replacement surgery according to claim 1, wherein the installation angle of the median pressure sensor (3) is the median position of the prosthesis (1).
4. 4. The device for measuring contact pressure in total ankle replacement surgery according to claim 1, wherein the angle of installation of the dorsi-extension pressure sensor (4) is 10 ° dorsi-extension.
5. 5. The device for measuring contact pressure in total ankle replacement surgery according to claim 1, wherein the front surface of the prosthesis (1) is provided with a dorsiflexion cambered surface (10), and the rear surface of the prosthesis (1) is provided with a plantar Qu Humian (11).
6. 6. The total ankle replacement intra-operative contact pressure measuring device according to claim 1, wherein the surface of the talus side component connecting groove (9) is arc-shaped.

Description

Contact pressure measuring device in total ankle joint replacement operation Technical Field The utility model relates to the technical field of total ankle replacement surgery, in particular to a contact pressure measuring device in total ankle replacement surgery. Background Total ankle replacement surgery, also known as ankle replacement surgery, is a procedure directed to a damaged ankle, intended to replace the damaged ankle portion with an artificial joint to restore its function. In the artificial ankle joint replacement, a part of distal tibia and talus are required to be resected, and then an artificial prosthesis is installed, but the existing artificial ankle joint replacement cannot intuitively judge soft tissue balance, cannot measure contact pressure between the inner joint and the outer joint, and often needs clinical experience of an operator to determine. This results in excessive surgical difficulty, difficulty in ensuring accuracy, and urgent need for improvement. Disclosure of utility model The present utility model is directed to solving the technical problems set forth in the background art. The utility model adopts the following technical scheme that the contact pressure measuring device in the total ankle joint replacement operation comprises a prosthesis, wherein a plantar flexion sensor is fixedly connected to the inside of the prosthesis, a middle-position pressure sensor is fixedly arranged in the prosthesis, a dorsal extension sensor is fixedly arranged in the prosthesis, a middle hole is formed in the upper surface of the prosthesis, a tibial side component connecting block is fixedly arranged in the upper surface of the prosthesis, a slot is formed in the upper surface of the tibial side component connecting block, a limit groove is formed in the edge of the tibial side component connecting block, and a talus side component connecting groove is formed in the lower surface of the prosthesis. Preferably, the plantar flexion pressure sensor is mounted at an angle of 10 ° to plantar flexion. Here, the plantar flexion pressure sensor can better detect the pressure applied by the ankle joint during plantarflexion. Preferably, the installation angle of the median pressure sensor is the median of the prosthesis. Here, make the pressure sensor of median position can better detect the pressure that the ankle joint receives when median position. Preferably, the installation angle of the back extension pressure sensor is 10 degrees of back extension. Here, the dorsi-extension pressure sensor can better detect the pressure applied by the ankle joint when dorsi-extension is performed. Preferably, the front of the prosthesis is provided with a back extending cambered surface, and the rear of the prosthesis is provided with a plantar Qu Humian. Here, there is sufficient room for the prosthesis to leave for ankle dorsi-extension and plantarflexion movements. Preferably, the surface of the talus side component connecting slot is arcuate. Here, the prosthesis is made possible for better connection with the talus side component. Compared with the prior art, the utility model has the advantages and positive effects that: According to the utility model, the pressure of the joint contact between the inner side and the outer side of the patient during plantar flexion, middle position and dorsiflexion can be detected through the prosthesis, plantar flexion pressure sensor, middle position pressure sensor and dorsiflexion pressure sensor, so that the accuracy of operation is improved, and the operation difficulty is greatly reduced. Drawings FIG. 1 is a schematic view showing a contact pressure measuring device in total ankle replacement surgery according to the present utility model; FIG. 2 is a plan view showing a contact pressure measuring device in total ankle replacement surgery according to the present utility model; FIG. 3 is a cross-sectional view of a prosthesis for a contact pressure measuring device in total ankle replacement surgery according to the present utility model; fig. 4 is an exploded view of the inside of a prosthesis of a contact pressure measuring device in total ankle replacement surgery according to the present utility model. Legend description: 1. Prosthesis, 2, plantar flexion pressure sensor, 3, median position pressure sensor, 4, dorsal extension pressure sensor, 5, middle hole, 6, tibia side component connecting block, 7, slot, 8, limit slot, 9, talus side component connecting slot, 10, dorsal extension cambered surface, 11, plantar Qu Humian. Detailed Description In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be rendered by reference to the appended drawings and examples. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other. In the following description, numerous