CN-122005033-A - Nail bed cutter

CN122005033ACN 122005033 ACN122005033 ACN 122005033ACN-122005033-A

Abstract

The invention provides a nail bed cutter which comprises a nail bed cutting part, a cutting guide part and an angle adjusting part, wherein the cutting guide part is connected with the nail bed cutting part and comprises a guide piece, a cutting guide channel is arranged on the guide piece, the nail bed cutting part moves along the cutting guide channel, the angle adjusting part is connected with the cutting guide part, and the angle adjusting part is used for adjusting the cutting angle of the cutting guide part relative to a nail surface to be cut. According to the invention, through the organic integration of the nail bed cutting part, the cutting guide part and the angle adjusting part, the accurate adjustment of the angle of the cutting guide part relative to the nail surface is realized, so that two clinical modes of near-end beveling and far-end flush cutting are compatible on a single device.

Inventors

ZHAO QIHUI
JIANG XIAOWEI
Li Taoye
LI LILI

Assignees

杭州市第三人民医院(杭州市惠民医院、浙江中医药大学附属杭州第三医院)

Dates

Publication Date: 20260512
Application Date: 20260409

Claims (10)

1. A nail bed cutter, comprising: A nail bed cutting part; a cutting guide connected to the nail bed cutting portion, the cutting guide including a guide provided with a cutting guide path along which the nail bed cutting portion moves; and the angle adjusting part is connected with the cutting guide part and is used for adjusting the cutting angle of the cutting guide part relative to the surface to be cut.
2. The nail bed cutter of claim 1, wherein the cutting guide further comprises: A cutting limiter that moves in the cutting guide path and stops a moving path of the nail bed cutting portion in the cutting guide path; and the path adjusting piece is connected with the cutting limiting piece and locks or releases the cutting limiting piece relative to the cutting guide channel.
3. The nail bed cutter of claim 1, further comprising a base portion comprising: an adjusting base connected with the cutting guide part, and The thickness control piece is connected with the adjusting base, the thickness control piece adjusts the height of the adjusting base relative to the nail face to be cut, the thickness control piece comprises a base and a lifting driving piece, the lifting driving piece is connected between the base and the adjusting base, and the adjusting base is driven to lift and lock the adjusting base at a preset height.
4. The nail bed cutter according to claim 3, wherein the cutting guide is rotatably connected to the adjustment base, the angle adjustment portion is connected between the adjustment base and the cutting guide, and the angle adjustment portion drives the cutting guide to rotate and locks it at a preset deflection angle.
5. The nail bed cutter according to claim 4, wherein the angle adjustment portion comprises a second worm and a second worm wheel that are intermeshed, the second worm being rotatably connected to the cutting guide portion, and the second worm wheel being fixed to the adjustment base, a central axis of the second worm wheel coinciding with a rotational axis of the cutting guide portion.
6. A nail bed cutter according to claim 3, wherein the lifting drive comprises: the lifting driving mechanisms are connected between the base and the adjusting base and are symmetrically distributed at multiple points; A synchronous transmission mechanism for driving a plurality of the lifting driving mechanisms to synchronously lift; the self-locking driving mechanism is in transmission connection with one of the lifting driving mechanisms.
7. The nail bed cutter according to claim 6, wherein each of said lifting drive mechanisms comprises a threaded rod and a threaded sleeve in threaded connection, said threaded sleeve being in rotational connection with said base, said threaded rod being fixed with said adjustment base, said self-locking drive mechanism comprising a first worm and a first worm gear in intermeshing engagement, said first worm being in rotational connection with said base, said first worm gear being coaxially fixed with one of said threaded sleeves.
8. The nail bed cutter of claim 1, wherein the nail bed cutter comprises: A slide plate moving along the cutting guide path; The cutter is connected with the sliding plate; an arc adjusting part connected with the slide plate and provided with an arc guiding groove on the surface thereof, and And the radian locking piece is used for adjusting and locking the bending radian of the radian adjusting piece.
9. The nail bed cutter of claim 8, wherein the nail bed cutter further comprises: the follower is rotationally connected with the cutter and is in rolling fit in the radian guide groove; the cutter position locking pieces are connected with the radian adjusting piece; The cutter position locating piece is arranged on the cutter and is locked with the corresponding cutter position locking piece when the cutter slides to the corresponding position.
10. The nail bed cutter of claim 3, further comprising a cutting window passage extending through the base, adjustment base and cutting guide and disposed opposite the nail surface to be cut.

Description

Nail bed cutter Technical Field The invention relates to the technical field of nail bed cutting, in particular to a nail bed cutter. Background The nail bed is located below the deck, closely adjacent to the phalanges. In clinical nail disease surgery, to increase tissue survival rate, it is currently preferred to cut the nail plate and the nail bed tissue below it as a composite tissue flap in an integrated manner. For different nail lesions, corresponding cutting schemes are adopted, for example, in nail bed shortening repair, nail bed is often prolonged by small-angle beveling and nail bed tissue flap displacement, and in nail bed transplantation, donor tissue flap is required to be cut by longitudinal leveling. However, there is currently a lack of a special instrument in clinical practice that allows for both cutting modes. Most of the existing cutting tools are of a single-function design, the chamfering and flat cutting feed modes cannot be flexibly switched on the same device, and if a worker replaces the tool by bare hands, the continuity of the operation can be reduced. Moreover, the current cutting tool completely depends on personal experience to control the cutting process, and under the condition of lacking a cutting stroke guide and angle and thickness fine adjustment mechanism, the blade is extremely easy to generate yaw or deflection, so that uneven thickness of cut tissues and even accidental injury of deep tissues are caused, and the operation effect is difficult to ensure. Therefore, the development of the special nail bed cutter which can realize the small-angle beveling and the flush cutting and has the functions of precise guidance, thickness and angle cooperative fine adjustment has important significance for improving the safety and tissue survival rate of nail bed operation. Disclosure of Invention In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a nail bed cutter which can achieve both small-angle chamfering and leveling, and has precise guidance and thickness and angle cooperative fine adjustment functions. The present invention provides a nail bed cutter comprising: A nail bed cutting part; a cutting guide connected to the nail bed cutting portion, the cutting guide including a guide provided with a cutting guide path along which the nail bed cutting portion moves; and the angle adjusting part is connected with the cutting guide part and is used for adjusting the cutting angle of the cutting guide part relative to the surface to be cut. Preferably, the cutting guide further comprises: A cutting limiter that moves in the cutting guide path and stops a moving path of the nail bed cutting portion in the cutting guide path; and the path adjusting piece is connected with the cutting limiting piece and locks or releases the cutting limiting piece relative to the cutting guide channel. Preferably, the base part further comprises: an adjusting base connected with the cutting guide part, and The thickness control piece is connected with the adjusting base, the thickness control piece adjusts the height of the adjusting base relative to the nail face to be cut, the thickness control piece comprises a base and a lifting driving piece, the lifting driving piece is connected between the base and the adjusting base, and the adjusting base is driven to lift and lock the adjusting base at a preset height. Preferably, the cutting guide part is rotatably connected with the adjusting base, the angle adjusting part is connected between the adjusting base and the cutting guide part, and the angle adjusting part drives the cutting guide part to rotate and locks the cutting guide part at a preset deflection angle. Preferably, the angle adjusting part comprises a second worm and a second worm wheel which are meshed with each other, the second worm is rotatably connected to the cutting guide part, the second worm wheel is fixed with the adjusting base, and the central axis of the second worm wheel coincides with the rotation axis of the cutting guide part. Preferably, the elevation driving member includes: the lifting driving mechanisms are connected between the base and the adjusting base and are symmetrically distributed at multiple points; A synchronous transmission mechanism for driving a plurality of the lifting driving mechanisms to synchronously lift; the self-locking driving mechanism is in transmission connection with one of the lifting driving mechanisms. Preferably, each lifting driving mechanism comprises a screw rod and a threaded sleeve which are in threaded connection, the threaded sleeve is in rotary connection with the base, the screw rod is fixed with the adjusting base, the self-locking driving mechanism comprises a first worm and a first worm wheel which are meshed with each other, the first worm is in rotary connection with the base, and the first worm wheel is coaxially fixed with one of the threaded sleeves. Preferably, t