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Patella osteotomy grasping device and use method

A grasping device and patella technology, applied in the field of medical devices, can solve the problems of insufficient clamping of the patella, soft tissue damage, soft tissue avulsion, etc., to facilitate the clamping operation of the patella and reduce the effect of damaging soft tissues

Pending Publication Date: 2022-02-25
FIRST HOSPITAL AFFILIATED TO GENERAL HOSPITAL OF PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the equipment used for grasping the patella is mainly divided into two categories: one is the pointed clamp, which uses its tip to penetrate into the parapatellar supporting tissue to maintain the position of the patella. The disadvantage is that the tip needs to penetrate into the soft tissue during the clamping process. It is easy to cause soft tissue avulsion; the other is the vertical patella grasper, which maintains the position of the patella by clamping the front and back of the patella, such as the one-piece patella osteotomy. Affect the osteotomy, if the clamping force is too large, it may easily cause prepatellar soft tissue damage or even patella fracture, so there is an urgent need for a patellar grasper that clamps the parapatellar tissue in a ring while supporting the patella

Method used

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  • Patella osteotomy grasping device and use method
  • Patella osteotomy grasping device and use method
  • Patella osteotomy grasping device and use method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: a kind of patella osteotomy grasping device, as Figure 1 to Figure 3 As shown, it includes clamping rod 1 2, clamping rod 2 13 and pressing device, the top of clamping rod 1 2 is fixedly installed with annular gripper 1, and the top of clamping rod 2 13 is fixedly installed with a spoon-shaped holder 14. The annular gripper 1 and the spoon holder 14 are located on the same horizontal plane, and the side walls of the clamping rod 1 2 and the clamping rod 2 13 are respectively provided with chute 1 5 and chute 2 10, and the chute 1 5 is close to The bottom of the clamping rod one 2, the chute two 10 is close to the bottom of the clamping rod two 13; the side walls of the clamping rod one 2 and the clamping rod two 13 are all connected with the pressing device;

[0033] Pressing device comprises arc handle one 6, arc handle two 8, slide block one 4 and slide block two 9; The end is hinged with the side wall of the clamping rod-2; one end of the slide block-...

Embodiment 2

[0044] Embodiment 2: a kind of using method of patella osteotomy grasping device, as Figure 4 shown, including the following steps:

[0045] 1) Rotate the knob 3 and remove the fixing screw 11;

[0046] 2) The patella is turned over, and the spoon-shaped supporter 14 is supported on the front surface of the patella, and the annular grasper 1 is fastened to the soft tissue around the side of the patella cartilage;

[0047] 3) Press the arc-shaped handle 1 6 and the arc-shaped handle 2 8, so that the ring gripper 1 and the spoon-shaped supporter 14 are tightened in parallel, and by grasping the soft tissues such as the patellar tendon, quadriceps tendon and parapatellar retinaculum, firm restraint of the patella;

[0048] 4) By rotating the knob 3, the clamping rod 1 2 and the clamping rod 2 13 are fixed by the fixing screw 11;

[0049] 5) Osteotomy was performed from the lateral side of the patella with the application of pendulum-like patella dismissal instruments.

[005...

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Abstract

The invention discloses a patella osteotomy grasping device and a use method, and relates to the technical field of medical instruments. The patella osteotomy grasping device is characterized by comprising a first clamping rod, a second clamping rod and a pressing device, wherein the top of the first clamping rod is provided with an annular grasping device, the top of the second clamping rod is provided with a spoon-shaped supporting device, the annular grasping device and the spoon-shaped supporting device are located on the same horizontal plane, a first sliding groove and a second sliding groove are formed in the side wall of the first clamping rod and the side wall of the second clamping rod respectively, the first sliding groove is close to the bottom of the first clamping rod, and the second sliding groove is close to the bottom of the second clamping rod, the side wall of the first clamping rod and the side wall of the second clamping rod are both connected with the pressing device, the pressing device comprises an arc-shaped handle I, an arc-shaped handle II, a sliding block I and a sliding block II, and the end of the first arc-shaped handle is hinged to the side wall of the second clamping rod. By means of the device and the use method, the patella and tissue beside the patella can be supported at the same time, so that the patella can be stably and firmly clamped, and meanwhile soft tissue avulsion can be prevented.

Description

technical field [0001] The invention relates to the technical field of medical instruments, more specifically, it relates to a patella osteotomy grasping device and a using method. Background technique [0002] With the aging of the population and the increase of sports injuries, the incidence of knee osteoarthritis is increasing. Clinically, both patellofemoral joint replacement and total knee replacement involve the treatment of the patella. [0003] Knee replacement has been widely used in the treatment of knee osteoarthritis. Safe and efficient grasping of the patella while it is being modified during replacement procedures has been a difficult problem. At present, the equipment used for grasping the patella is mainly divided into two categories: one is the pointed clamp, which uses its tip to penetrate into the parapatellar supporting tissue to maintain the position of the patella. The disadvantage is that the tip needs to penetrate into the soft tissue during the clam...

Claims

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Application Information

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IPC IPC(8): A61B17/28
CPCA61B17/28A61B17/2812A61B17/282
Inventor 崔翔王铖唐佩福李想张里程郝立波柴伟付君徐驰
Owner FIRST HOSPITAL AFFILIATED TO GENERAL HOSPITAL OF PLA
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