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Depth-limited bone drill with function of depth measurement

A depth sounding and bone drilling technology, used in medical science, surgery, etc., can solve problems such as single function, soft tissue, blood vessel and nerve damage, etc.

Active Publication Date: 2015-12-23
李凯
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the existing bone drill may cause damage to soft tissues, blood vessels and nerves, and has a single function, and the drilling and depth measurement need to be carried out separately, the present invention provides a depth-limited depth-measuring bone drill

Method used

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  • Depth-limited bone drill with function of depth measurement
  • Depth-limited bone drill with function of depth measurement
  • Depth-limited bone drill with function of depth measurement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 As shown, a depth-limiting depth-measuring bone drill includes a drill rod 1, and also includes a protective sleeve 3 that slides relative to the drill rod, can be braked at any time, and can be limitedly shortened, and can display the sliding distance of the protective sleeve relative to the drill rod display mechanism.

[0027] The protective sheath 3 includes a front section and a rear section, and a limited shortening structure is arranged between the front section and the rear section. The limited shortening structure includes an elastic structure connected between the tail end of the front section and the front end of the rear section and a limiting elastic body Limiting mechanism 2 for structural deformation.

[0028] A spring 2.1 is connected between the tail end of the front section and the front end of the rear section. The position-limiting mechanism 2 includes a space-limiting sleeve 2.2 which is threadedly connected to the outer circumfere...

Embodiment 2

[0037] Such as figure 2 As shown, a depth-limiting depth-measuring bone drill includes a drill rod 1, and also includes a protective sleeve 3 that slides relative to the drill rod, can be braked at any time, and can be limitedly shortened, and can display the sliding distance of the protective sleeve relative to the drill rod display mechanism.

[0038] The protective sheath 3 includes a front section and a rear section, and a limited shortening structure is arranged between the front section and the rear section. The limited shortening structure includes an elastic structure connected between the tail end of the front section and the front end of the rear section and a limiting elastic body Limiting mechanism 2 for structural deformation.

[0039] The limited shortening structure adopts a commonly used double-acting hydraulic cylinder structure, and its terminal has a buffer, which can smoothly reduce the terminal speed of the hydraulic cylinder and prevent hard impact at t...

Embodiment 3

[0048] Such as figure 2 As shown, a depth-limiting depth-measuring bone drill includes a drill rod 1, and also includes a protective sleeve 3 that slides relative to the drill rod, can be braked at any time, and can be limitedly shortened, and can display the sliding distance of the protective sleeve relative to the drill rod display mechanism.

[0049] The protective sheath 3 includes a front section and a rear section, and a limited shortening structure is arranged between the front section and the rear section. The limited shortening structure includes an elastic structure connected between the tail end of the front section and the front end of the rear section and a limiting elastic body Limiting mechanism 2 for structural deformation.

[0050] The limited shortening structure adopts a commonly used double-acting pneumatic cylinder structure, and its terminal has a buffer, which can smoothly reduce the terminal speed of the pneumatic cylinder and prevent hard impact at t...

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Abstract

The invention belongs to the technical field of surgical instruments and equipment, particularly relates to a depth-limited bone drill with a function of depth measurement and solves the problems that existing bone drills possibly cause damages to soft tissues, vessels and nerves and drilling and depth measurement are carried out separately due to functional singleness. The depth-limited bone drill with the function of depth measurement comprises a drill rod, a protective bushing and a display mechanism, the protective bushing is capable of sliding relative to the drill rod and capable of braking at any time and shrinking limitedly, and the display mechanism is used for displaying a slide distance of the protective bushing relative to the drill rod. The movable drill bushing capable of braking at any time is abutted against the bone surface and capable of retracting by a certain distance after braking, so that limited precision drilling depth is realized, and the soft tissues, vessels and nerves in human bodies can be protected from being accidentally injured by the drill rod in a bone drilling process.

Description

technical field [0001] The invention belongs to the technical field of surgical instruments, in particular to a depth-limiting depth-measuring bone drill. Background technique [0002] A bone drill is a tool used to drill holes in bone during surgery. When drilling a hole in the bone, the surgeon holds an electric drill and applies pressure to drill in. After the bone drill completely broke through the bone, the electric drill fell through, and the surgeon could not stop the pressure at the same time, thus causing the electric drill to continue to go deeper. Tissue damage may be caused during the in-depth process. If there are blood vessels and nerves in the direction of the electric drill, once damaged, it will cause serious consequences. And after the hole is drilled, it is necessary to measure the depth of the drilled hole to determine the appropriate screw. And the existing bone drill only has the function of drilling, and the surgeon needs to insert the depth finder ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/16
CPCA61B17/1626A61B17/1655
Inventor 李凯
Owner 李凯
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