CN211355702U - Novel adjustable spacing trepan - Google Patents

Abstract

The utility model discloses a novel adjustable spacing trepan, including first chimney, the sawtooth has been seted up to the bottom of first chimney, the top of first chimney is equipped with two semicircle boards, the opening has been seted up at the top of semicircle board, two the opening aligns each other, the inner wall clearance fit of second through-hole has the slender pole, the inside top threaded connection of slender pole has the screw. This novel adjustable spacing trepan, through a vertical section of thick bamboo, the semicircle board, the screw, thin pole, cooperation between nose bar and the opening, make this novel adjustable spacing trepan when using, need not fix a position again to it when having realized the skew target position of kirschner wire, can accomplish the position adjustment through this novel adjustable spacing trepan, and convenient for operation, after the location, a vertical section of thick bamboo can regard as the operation passageway to use, make things convenient for the doctor to take a sample, and the misery that brings for the patient when having reduced the relocation, the efficiency of the operation is improved, reduce the operation time, be of value to patient's postoperative recovery.

Description

Novel adjustable spacing trepan

Technical Field

The utility model relates to the technical field of medical equipment, specifically a novel adjustable spacing trepan.

Background

When treating the protrusion of the intervertebral disc, under the condition that the intervertebral disc is prolapsed, in order to ensure that the working channel can safely reach the cavity of the spine, a trephine is used for cutting off the hyperplastic sclerotin at the far end of the facet joint and a part of the upper joint bulge to enlarge the intervertebral foramen, the working channel of the spinal endoscope reaches the cavity of the spine, and a surgical instrument is used for removing the nucleus pulposus tissue of the hernia to achieve the purpose of treating the protrusion of the intervertebral disc.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel adjustable spacing trepan to propose the ke shi needle position dissatisfied among the solution above-mentioned background art, need take out the ke shi needle and perspectively fix a position again, prolonged operation time, increased patient's misery, and the great problem of work load.

In order to achieve the above object, the utility model provides a following technical scheme: a novel adjustable limit trepan comprises a first vertical cylinder, a second vertical cylinder is connected below the outer wall of the first vertical cylinder in a threaded mode, the bottom of the second vertical cylinder is provided with sawteeth, two semicircular plates are arranged above the first vertical cylinder, the top of the semicircular plate is provided with an opening, the two openings are aligned with each other, the left side and the right side of the top of the semicircular plate are both provided with a first through hole, the top of the semicircular plate is provided with a second through hole, the inner wall of the second through hole is in clearance fit with a thin rod, the bottom of the thin rod is fixedly connected with the top of the first vertical cylinder, a screw is connected with the upper part of the inner wall of the thin rod in a threaded manner, the outer wall of the screw is sleeved with a spring, two ends of the spring are respectively propped against the screw and the semicircular plate, the bottom rigid coupling of semicircle board has the nose bar, two recesses have all been seted up to the top left and right sides of first vertical section of thick bamboo.

Preferably, two of the grooves are centrosymmetric about the thin rod.

Preferably, the outer wall of the semicircular plate is flush with the outer wall of the first vertical cylinder.

Preferably, the radius of the opening is the same as the radius of the first through hole.

Preferably, the first and second columns have the same outer diameter.

Compared with the prior art, the beneficial effects of the utility model are that: this novel adjustable spacing trepan, through a first riser, the semicircle board, a screw, thin pole, cooperation between nose bar and the recess, make this novel adjustable spacing trepan when using, need not fix a position it again when having realized the skew target position of kirschner wire, can accomplish position adjustment through this novel adjustable spacing trepan, high durability and convenient operation, through the nose bar, cooperation between spring and the screw, it fixes a position and fixes to be convenient for half plectane and a first riser, it is more convenient to use, after the location, a riser can regard as the operation passageway to use, make things convenient for the doctor to take a sample, and reduce the misery that brings for the patient when relocating, the efficiency of the operation has been improved, reduce the operation time, be of value to patient's postoperative resumes, consequently can be better satisfy people's use needs.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an expanded view of FIG. 1;

fig. 3 is a schematic view of the connection relationship between the thin rod, the spring and the screw in fig. 1.

In the figure: 1. the device comprises a first vertical cylinder, 2, a semicircular plate, 3, a second through hole, 4, a thin rod, 5, a spring, 6, a screw, 7, a groove, 8, a convex rod, 9, a first through hole, 10, an opening, 11, a sawtooth, 12 and a second vertical cylinder.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a novel adjustable limiting ring saw comprises a first vertical cylinder 1, wherein two semicircular plates 2 are combined together to block the bottom of the first vertical cylinder 1, a second vertical cylinder 12 is connected to the lower portion of the outer wall of the first vertical cylinder 1 in a threaded manner, sawteeth 11 are arranged at the bottom of the second vertical cylinder 12, two semicircular plates 2 are arranged above the first vertical cylinder 1, openings 10 are formed in the tops of the semicircular plates 2, the two openings 10 are aligned with each other, first through holes 9 are formed in the left side and the right side of the top of each semicircular plate 2, a Kirschner wire is inserted into each first through hole 9, a second through hole 3 is formed in the top of each semicircular plate 2, each second through hole 3 is matched with a thin rod 4 to limit the first vertical cylinder 1 and the corresponding semicircular plate 2, the semicircular plates 2 can rotate around the thin rod 4 under the action of external force, a thin rod 4 is in clearance fit with the inner wall of each second through hole 3, the bottom of the thin rod 4 is fixedly connected with the top of the first vertical cylinder 1, thin rod 4's inner wall top threaded connection has screw 6, screw 6 can play spacing effect to semicircle board 2 through spring 5, spring 5 gives 2 decurrent elasticity of semicircle board, the outer wall of screw 6 cup joints in spring 5, spring 5's both ends respectively with screw 6 and 2 offsets tightly of semicircle board, the bottom rigid coupling of semicircle board 2 has nose bar 8, nose bar 8 and recess 7 cooperation, can play fixed effect to first vertical section of thick bamboo 1 and semicircle board 2, two recesses 7 have all been seted up to the top left and right sides of first vertical section of thick bamboo 1, two recesses 7 are central symmetry about thin rod 4, the outer wall of semicircle board 2 is level with the outer wall of first vertical section of thick bamboo 1 mutually, the radius of opening 10 is the same with the radius of first through-hole 9, the external diameter of first vertical section of thick bamboo 1 and second vertical section of thick bamboo 12 is the same.

When the novel adjustable limiting trepan is used, the positioning is carried out through a kirschner wire before an operation, then whether the positioning is accurate is observed in a perspective mode, if the position of the kirschner wire is not satisfactory, the kirschner wire does not need to be moved to be positioned again, the position of the novel adjustable limiting trepan is moved, an appropriate first through hole 9 or an appropriate opening 10 is selected as a reference, then the first vertical tube 1 is firstly sleeved on the outer wall of the external kirschner wire, then the kirschner wire penetrates through a certain first through hole 9 or an opening 10 to limit the kirschner wire and the novel adjustable limiting trepan, after the position is adjusted, the two semicircular plates 2 are rotated to enable the semicircular plates 2 to rotate around the thin rod 4, the two semicircular plates 2 are enabled to be unscrewed for 180 degrees, the lower portion of the convex rod 8 is aligned with one of the grooves 7, the screw 6 is adjusted, the screw 6 presses the semicircular plates 2 to move downwards, and enables the convex rod 8 to, spring 5 is compressed this moment, and two semicircle boards 2 are fixed more firmly with first vertical section of thick bamboo 1 this moment, grip two semicircle boards 2 and just can carry out cutting work through the sawtooth 11 of 1 bottoms of first vertical section of thick bamboo, and two semicircle boards 2 are unscrewed back first vertical section of thick bamboo 1 and also can be regarded as working channel and use.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a novel adjustable spacing trepan, includes first vertical section of thick bamboo (1), its characterized in that: the lower part of the outer wall of the first vertical cylinder (1) is in threaded connection with a second vertical cylinder (12), the bottom of the second vertical cylinder (12) is provided with sawteeth (11), two semicircular plates (2) are arranged above the first vertical cylinder (1), the tops of the semicircular plates (2) are provided with openings (10), the two openings (10) are aligned with each other, the left side and the right side of the top of each semicircular plate (2) are provided with first through holes (9), the top of each semicircular plate (2) is provided with a second through hole (3), the inner wall of each second through hole (3) is in clearance fit with a thin rod (4), the bottom of each thin rod (4) is fixedly connected with the top of the first vertical cylinder (1), the upper part of the inner wall of each thin rod (4) is in threaded connection with a screw (6), the outer wall of each screw (6) is sleeved on a spring (5), the two ends of each spring (5) are respectively abutted against the screw (6) and the semicircular plates (2), the bottom rigid coupling of semicircle board (2) has nose bar (8), two recesses (7) have all been seted up to the top left and right sides of first vertical section of thick bamboo (1).

2. The novel adjustable stop ring saw of claim 1, wherein: the two grooves (7) are centrosymmetric about the thin rod (4).

3. The novel adjustable stop ring saw of claim 1, wherein: the outer wall of the semicircular plate (2) is flush with the outer wall of the first vertical cylinder (1).

4. The novel adjustable stop ring saw of claim 1, wherein: the radius of the opening (10) is the same as the radius of the first through hole (9).

5. The novel adjustable stop ring saw of claim 1, wherein: the outer diameters of the first vertical cylinder (1) and the second vertical cylinder (12) are the same.

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