CN213552168U - Neurosurgery micro-operation transverse cutting scissors - Google Patents

Abstract

The utility model belongs to the field of medical surgical instruments, in particular to a neurosurgery micro-surgery transverse cutting scissors, wherein the upper part of a fixed handle of a fixed scissors body is provided with a fixed block, one side of the fixed block is provided with an assembly groove, the front end and the rear end of the fixed block are provided with a front through hole and a rear through hole, the tail part of an outer tube is fixed in the front through hole, and a fixed blade is fixed at the front end of the outer tube; the upper part of a movable handle of the movable scissors body is provided with a movable block, the movable block is assembled in the assembling groove, and an assembling through hole is formed in the movable block; the inner shaft penetrates through the outer pipe, sequentially penetrates through the front through hole, the assembly through hole and the rear through hole, an adjusting nut is installed on a thread section at the tail end of the inner shaft, the front end of the adjusting nut extends into the rear through hole and is attached to the movable block, and the movable blade is fixed at the front end of the inner shaft; the inner shaft and the movable block synchronously rotate; the inner shaft forms included angles with a shearing plane formed by the fixed blade and the movable blade and a rotating plane of the movable handle. Through the utility model discloses can realize horizontal shearing function, help shortening the operation time, reduce the wound, improve the operation quality.

Description

Neurosurgery micro-operation transverse cutting scissors

Technical Field

The utility model relates to a neurosurgery micro-surgery crosscut scissors belongs to medical surgical instruments field.

Background

At present, neurosurgery is developing towards the direction of minimally invasive and fine treatment in various aspects of approach mode, operation in operation and the like. In order to reduce the damage of the tissue structure of the patient as much as possible, the operation opening and the path are generally narrow, and meanwhile, most operations need to be completed under a microscope or a neuroendoscope. In order to adapt to the above operation characteristics, in recent years, neurosurgical microsurgical instruments are continuously updated, and on the premise of ensuring absolute safety of materials and structural design, the operation visual field is expanded as much as possible through innovation or improvement of various modes, so that more diversified and accurate operation modes are provided for surgeons.

The microsciscope is one of the most widely used instruments in neurosurgery microsurgery and the most frequently used instruments. The traditional micro-scissors have various forms and specifications, but still have some problems. For example, when a tumor, necrotic tissue and the like are cut deep into the intracranial, the target can be removed only by a plurality of cutting actions in the longitudinal direction through the existing various micro-scissors. Although some micro scissors are designed to bend left and right and up and down, the transverse shearing operation still cannot be really realized.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: overcomes the defects in the prior art, and provides the neurosurgery micro-surgery transverse cutting scissors which can realize the transverse cutting function, is beneficial to shortening the operation time, can reduce the wound and improve the operation quality.

The utility model discloses a neurosurgery micro-surgery transverse cutting scissors, which comprises a fixed scissors body and a movable scissors body; the fixed scissors body comprises a fixed handle, an outer tube and a fixed blade, wherein the upper part of the fixed handle is provided with a fixed block, one side of the fixed block is provided with an assembly groove, the front end and the rear end of the fixed block are respectively provided with a front through hole and a rear through hole, the front through hole and the rear through hole are coaxial and are communicated with the assembly groove, the tail part of the outer tube is fixed in the front through hole, and the fixed blade is fixed at the outlet at the front end of the outer tube; the movable shear body comprises a movable handle, an inner shaft and a movable blade, wherein the upper part of the movable handle is provided with a movable block, an assembly through hole is formed in the movable block along the length direction, the movable block is assembled in an assembly groove of the fixed block, the assembly through hole is coaxial with the front through hole after assembly, the inner shaft penetrates into the outer pipe from the front end and is coaxial with the outer pipe, the inner shaft sequentially penetrates through the front through hole, the assembly through hole and the rear through hole, an adjusting nut is installed on a thread section at the tail end of the inner shaft (the fixed blade and the movable blade are ensured to form a shear plane through the adjusting nut), the front end of the adjusting nut extends into the rear through hole and is attached to the; the inner shaft and the movable block synchronously rotate; the lower finger ring of the movable handle and the lower finger ring of the fixed handle are positioned on the same plane; the inner shaft forms included angles with a shearing plane formed by the fixed blade and the movable blade and a rotating plane of the movable handle.

The utility model discloses a theory of operation and process are as follows:

when the movable handle is opened relative to the fixed handle, the movable block drives the inner shaft to rotate, and the movable blade and the fixed blade form an included angle, at the moment, the transverse cutting scissors of the utility model are in an opened state;

when the activity handle is closed motion for fixed handle, the contained angle of movable blade and fixed blade diminishes gradually to two coincidences, this moment, shearing motion is accomplished to two blades (being movable blade and fixed blade) of crosscut scissors, finally is closed state.

Known from the aforesaid, this crosscut scissors is through rotating movable handle for fixed handle, can drive the interior axle and the movable blade axial rotation of axle front end, make movable blade and fixed blade realize horizontal shearing function jointly, thereby vertical shearing and snatching, action such as tear that traditional micro-scissors have been replaced with horizontal shearing, make the art person can carry out accurate horizontal shearing operation, the shearing number of times that has significantly reduced, on the one hand, help shortening the operation time, on the other hand, unnecessary damage has been reduced, make the wound reduce to some extent, finally, improve the operation quality. The transverse cutting scissors are applied to neurosurgical microsurgery, and especially have far-reaching significance when the transverse cutting scissors penetrate into the spine or intracranial and cut target objects such as tumors, necrotic tissues and the like.

Simultaneously, because of the contained angle all exists in the plane of rotation of the interior axle of this crosscut scissors and the shear plane that fixed blade and movable blade formed and movable handle, consequently crosscut scissors overall structure is the rifle shape, and handheld convenient operation can fully expose the operation field of vision moreover in the art, helps improving the precision of horizontal shearing operation, and it is more convenient to operate. Preferably, the inner shaft and the rotating plane of the movable handle form an included angle of 120 degrees; the inner shaft is perpendicular to a shearing plane formed by the fixed blade and the movable blade.

Besides, the utility model discloses structural design is simple reasonable and whole removable, and cleaning and disinfection is more convenient.

Preferably, the assembly through hole is a special-shaped hole, and the section shape of the rear part of the inner shaft is matched with that of the special-shaped hole. The synchronous rotation of the inner shaft and the movable block can be realized through the structural design.

Preferably, both sides of the upper end of the assembly groove on the fixing block are provided with limiting groove edges; two limiting steps are arranged on the surface of the movable block, which is assembled with the assembling groove, corresponding to the two limiting groove edges. When the movable handle is opened or closed relative to the fixed handle, the two limiting steps and the two limiting groove edges act together to limit the rotating range of the movable handle, and further limit the opening angle of the movable blade and the fixed blade. Preferably, the bottom surface of the assembly groove on the fixed block is an inward concave arc surface, and correspondingly, the surface of the movable block assembled with the assembly groove is an outward convex arc surface; the central angle corresponding to the convex arc surface is smaller than the central angle corresponding to the concave arc surface.

Compared with the prior art, the utility model beneficial effect who has is:

the utility model discloses a rotate movable handle for fixed handle, can drive the interior axle and interior axle front end the movable blade axial rotation, make movable blade and fixed blade realize the horizontal shearing function jointly, thereby vertical shearing that has replaced traditional micro-scissors with horizontal shearing and snatch, tear actions such as, make the art person can carry out accurate horizontal shearing operation, the number of times of shearing that has significantly reduced, on the one hand, help shortening the operation time, on the other hand, unnecessary damage has been reduced, make the wound reduce to some extent, finally improve the operation quality.

Drawings

Fig. 1 is a schematic structural view of the present invention in an open state;

fig. 2 is a schematic structural view of the present invention in a closed state;

fig. 3 is a cross-sectional view of the present invention in a closed state;

FIG. 4 is a schematic view of the stationary blade being welded to the outer tube;

FIG. 5 is a schematic view of the movable blade being welded to the inner shaft;

FIG. 6 is a schematic view of an assembly structure of a movable block at the upper part of the movable handle and a fixed block at the upper part of the fixed handle;

fig. 7 is a partially enlarged view of the portion I in fig. 6.

In the figure: 1. fixing the blade; 2. an outer tube; 3. a fixed block; 4. adjusting the screw cap; 5. fixing a handle; 6. a movable handle; 7. a movable block; 8. a movable blade; 9. an inner shaft; 10. a threaded segment; 11. assembling a groove; 12. a front through hole; 13. a limiting groove edge; 14. a rear through hole; 15. a limiting step; 16. and assembling the through hole.

Detailed Description

Embodiments of the present invention are further described below with reference to the accompanying drawings:

as shown in fig. 1 to 7, the neurosurgical microsurgical crosscut scissors in the present embodiment includes a fixed scissors body and a movable scissors body;

the fixed shear body comprises a fixed handle 5, an outer tube 2 and a fixed blade 1, wherein the upper part of the fixed handle 5 is provided with a fixed block 3, one side of the fixed block 3 is provided with an assembly groove 11, the front and rear ends of the fixed block 3 are respectively provided with a front through hole 12 and a rear through hole 14, the front through hole 12 and the rear through hole 14 are coaxial and are communicated with the assembly groove 11, the tail part of the outer tube 2 is arranged in the front through hole 12 and is welded with the front through hole 12 into a whole by laser welding or silver welding, and the fixed blade 1 is welded at the outlet at the front end of the outer tube;

the movable shear body comprises a movable handle 6, an inner shaft 9 and a movable blade 8, wherein the upper part of the movable handle 6 is provided with a movable block 7, an assembly through hole 16 is formed in the movable block 7 along the length direction, the movable block 7 is assembled in an assembly groove 11 of the fixed block 3, the assembly through hole 16 is coaxial with the front through hole 12 after assembly, the inner shaft 9 penetrates into the outer pipe 2 from the front end and is coaxial with the outer pipe 2, the inner shaft sequentially penetrates through the front through hole 12, the assembly through hole 16 and the rear through hole 14, an adjusting nut 4 is installed on a thread section 10 at the tail end of the inner shaft, the front end of the adjusting nut 4 extends into the rear through hole 14 and is attached to the movable block 7, and the movable blade 8;

in the embodiment, the assembly through hole 16 is a special-shaped hole, the section shape of the rear part of the inner shaft 9 is matched with that of the special-shaped hole, and the inner shaft 9 and the movable block 7 keep synchronous rotation through the structural design;

the lower finger ring of the movable handle 6 and the lower finger ring of the fixed handle 5 are positioned on the same plane;

the inner shaft 9 forms included angles with the shearing plane formed by the fixed blade 1 and the movable blade 8 and the rotating plane of the movable handle 6.

In this embodiment, the inner shaft 9 and the rotating plane of the movable handle 6 form an included angle of 120 degrees; the inner shaft 9 is perpendicular to the shearing plane formed by the fixed blade 1 and the movable blade 8.

The working principle and the process of the transverse cutting scissors are as follows:

when the movable handle 6 makes an opening movement relative to the fixed handle 5, the movable block 7 drives the inner shaft 9 to rotate, the movable blade 8 and the fixed blade 1 form an included angle, and at the moment, the transverse cutting scissors are in an opening state;

when the movable handle 6 is closed relative to the fixed handle 5, the included angle between the movable blade 8 and the fixed blade 1 is gradually reduced to two overlapping blades, at the moment, the two blades (namely the movable blade 8 and the fixed blade 1) of the transverse cutting scissors complete the shearing movement, and finally the transverse cutting scissors are in a closed state.

In this embodiment, both sides of the upper end of the assembly groove 11 on the fixing block 3 are provided with a limiting groove edge 13; two limiting steps 15 are arranged on the surface of the movable block 7, which is assembled with the assembling groove, corresponding to the two limiting groove edges 13. The bottom surface of the assembly groove 11 on the fixed block 3 is an inward concave arc surface, and correspondingly, the surface of the movable block 7 assembled with the assembly groove is an outward convex arc surface; the central angle corresponding to the convex arc surface is smaller than the central angle corresponding to the concave arc surface. When the movable handle 6 is opened or closed relative to the fixed handle 5, the two limit steps 15 and the two limit groove edges 13 act together to limit the rotation range of the movable handle 6, and further limit the opening angle of the movable blade 8 and the fixed blade 1.

Known from the aforesaid, this crosscut scissors is through rotating movable handle 6 for fixed handle 5, can drive the interior axle 9 and the 8 axial rotations of movable blade of axle 9 front end, make movable blade 8 and fixed blade 1 realize horizontal shearing function jointly, thereby vertical shearing and snatching that traditional micro-scissors have been replaced with horizontal shearing, action such as tear, make the art person can carry out accurate horizontal shearing operation, the shearing number of times has significantly reduced, on the one hand, help shortening the operation time, on the other hand, unnecessary damage has been reduced, make the wound reduce to some extent, finally, improve the operation quality. The transverse cutting scissors are applied to neurosurgical microsurgery, and especially have far-reaching significance when the transverse cutting scissors penetrate into the spine or intracranial and cut target objects such as tumors, necrotic tissues and the like.

Simultaneously, because of the contained angle all exists in the plane of rotation of axle 9 and the shear plane that fixed blade 1 and activity blade 8 formed and activity handle 6 in this crosscut scissors, consequently crosscut scissors overall structure is the rifle shape, and handheld convenient operation can fully expose the operation field of vision moreover in the art, helps improving the precision of horizontal shearing operation, and it is more convenient to operate.

Besides, the transverse cutting scissors are simple, reasonable and overall detachable in structural design, and more convenient to clean and disinfect.

Claims (6)

1. A neurosurgical microsurgical crosscut scissors is characterized in that: comprises a fixed scissor body and a movable scissor body;

the fixed scissors body comprises a fixed handle (5), an outer tube (2) and a fixed blade (1), a fixed block (3) is arranged at the upper part of the fixed handle (5), an assembly groove (11) is formed in one side of the fixed block (3), a front through hole (12) and a rear through hole (14) are respectively formed in the front end and the rear end of the fixed block (3), the front through hole (12) and the rear through hole (14) are coaxial and are communicated with the assembly groove (11), the tail part of the outer tube (2) is fixed in the front through hole (12), and the fixed blade (1) is fixed at the outlet of the front end of the outer tube (2);

the movable shear body comprises a movable handle (6), an inner shaft (9) and a movable blade (8), a movable block (7) is arranged at the upper part of the movable handle (6), an assembly through hole (16) is formed in the movable block (7) along the length direction, the movable block (7) is assembled in an assembly groove (11) of a fixed block (3), the assembly through hole (16) is coaxial with a front through hole (12) after assembly, the inner shaft (9) penetrates through the outer pipe (2) from the front end and is coaxial with the outer pipe (2), the inner shaft sequentially penetrates through the front through hole (12), the assembly through hole (16) and the rear through hole (14), an adjusting nut (4) is installed on a threaded section (10) at the tail end of the inner shaft, the front end of the adjusting nut (4) extends into the rear through hole (14) and is attached to the movable block (7), and the movable blade (8) is fixed; the inner shaft (9) and the movable block (7) rotate synchronously;

the lower finger ring of the movable handle (6) and the lower finger ring of the fixed handle (5) are positioned on the same plane; the inner shaft (9) forms included angles with a shearing plane formed by the fixed blade (1) and the movable blade (8) and a rotating plane of the movable handle (6).

2. The neurosurgical microsurgical crosscutting scissors of claim 1, wherein: the assembly through hole (16) is a special-shaped hole, and the section shape of the rear part of the inner shaft (9) is matched with that of the special-shaped hole.

3. Neurosurgical microsurgical crosscutting scissors according to claim 1 or 2, wherein: both sides of the upper end of the assembly groove (11) on the fixing block (3) are provided with limiting groove edges (13); two limiting steps (15) are arranged on the surface of the movable block (7) which is assembled with the assembling groove corresponding to the two limiting groove edges (13).

4. Neurosurgical microsurgical crosscutting scissors according to claim 3, wherein: the bottom surface of the assembly groove (11) on the fixed block (3) is an inward concave arc surface, and correspondingly, the surface of the movable block (7) assembled with the assembly groove is an outward convex arc surface; the central angle corresponding to the convex arc surface is smaller than the central angle corresponding to the concave arc surface.

5. The neurosurgical microsurgical crosscutting scissors of claim 1, wherein: the inner shaft (9) and the rotating plane of the movable handle (6) form an included angle of 120 degrees.

6. The neurosurgical microsurgical crosscutting scissors of claim 1, wherein: the inner shaft (9) is perpendicular to a shearing plane formed by the fixed blade (1) and the movable blade (8).

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