Surgical lithotomy position leg support

Abstract

The invention provides a surgical lithotomy position leg support which comprises an edge rail clamp, an eccentric locking structure and a leg support locking structure; the edge rail clamp comprises an edge rail clamp body, an adjustable clamping block and a handle assembly; a base plate groove is formed in the edge rail clamp, and the base plate groove is used for containing a base plate; the eccentric locking structure comprises a locking device, a semispherical bearing, an eccentric shaft and an eccentric ejector rod, the eccentric ejector rod sequentially comprises a top piece, a connecting rod, a pressing spring and a tail top column from top to bottom, and the top piece is hinged to the connecting rod. The leg support is more stable in clamping and suitable for different surgical bededge rails, the tangential force of an eccentric wheel on the ejector rod is eliminated, the service life of the leg support is prolonged, the pressure spring is arranged at the lower end of the eccentric ejector rod, excessive stroke of the eccentric wheel is offset, the locking device is prevented from being damaged, the leg support can be adjusted by multiple degrees of freedom, and the locking mode is easy to operate; the leg support is simple in structural appearance, easy to operate, simple in structure and capable of avoiding influences on the surgical process.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a leg support for lithotomy position. Background technique [0002] The leg support is an important medical device in lithotomy position surgery. The traditional leg support supports the popliteal part of the patient's leg. Due to the small support area of ​​this kind of leg support, it is easy to cause blood circulation disturbance in the patient's leg. The leg support for the calf support This secondary injury can be avoided, hence the increasing popularity of calf support leg braces. [0003] Operating bed accessories such as leg frames are used by being fixed on the side rails on both sides of the operating bed. For ease of use, the size of the operating bed side rails is generally set in the following specifications: section 30*10mm, 30*8mm, 25* 10mm, 25*8mm, there are two fixing methods of the existing leg frame fixing device: one is the up and down adjustable ...

AI Technical Summary

Problems solved by technology

[0003] Operating bed accessories such as leg frames are used by being fixed on the side rails on both sides of the operating bed. For ease of use, the size of the operating bed side rails is generally set in the following specifications: section 30*10mm, 30*8mm, 25* 10mm, 25*8mm, there are two fixing methods of the existing leg frame fixing device: one is the up and down adjustable screw fixing, this fixing method can only fasten the vertical direction, and cannot fasten the horizontal direction, so the fixation is not firm , once it falls off during the operation, it will cause great harm to the patient; the second is the two-way adjustable screw fixation, although this method can fasten the horizontal and vertical directions at the same time, but the operation is complicated, and the two directions need to be adjusted in coordination, and the pressure area fixed by the screw Small, unstable, and prone to irreversible damage to side rails

[0004] The movement and locking method of the existing lithotomy position leg frame is the cooperation of the eccentric shaft and the eccentric mandrel. Through the working stroke of the eccentric wheel rotation, the hemispherical bearing is moved or locked by the pressure through the eccentric mandrel. However, the existing eccentric shaft The ejector rod in the structure is a simple one-piece column. There are two problems in this design: first, the tangential force on the ejector rod when the eccentric wheel rotates can only be offset by the rigidity of the ejector rod itself and the pressure of the outer disc spring screw, so The ejector rod is very easy to damage; secondly, because the ejector rod is a rigid part, the working stroke of the eccentric wheel is completely converted into the movement stroke of the ejector rod, so if the position of the ejector rod is not adjusted before use, the rotation of the handle is very difficult and easily damaged lock structure

[0005] The leg support on the leg frame needs to be adjusted according to different surgical conditions, so the multi-degree-of-freedom rotation of the leg support is very necessary, but the locking of the multi-degree-of-freedom rotation is also very troublesome, and each movement direction needs to be locked separately. The surgical operation is too complicated, so a locking structure that can not only adjust the leg rest with multiple degrees of freedom but also facilitate the locking operation is needed

[0006] As a medical device for surgery, the leg frame is simple and easy to operate, not only for aesthetics, but also as a boost to the surgical process. Most of the existing leg frames have many adjustment levers, and the operation is complicated. The rivets or adjustment rods are exposed, which is very influential. surgical procedure

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