CN211131542U - Bone-crushing scissors for bone grafting - Google Patents

Abstract

The utility model discloses a bone-breaking scissors for bone grafting, belonging to the field of surgical instruments and comprising a left scissors handle, a right scissors handle and a spring leaf, wherein the left scissors handle is hinged with the right scissors handle through a hinged screw, the top parts of the left scissors handle and the right scissors handle are both arc-shaped and are bent downwards, one end of the spring leaf is fixedly arranged at the inner side of the right scissors handle, and the other end of the spring leaf is butted at the inner side of the left scissors handle; the inboard fixedly connected with arc pole in bottom of handle is cut on a left side, and the inboard fixedly connected with arc of bottom of handle is cut on the right side, and the one end department of arc sets up with arc pole matched with arc wall, the utility model discloses a cutting part is arc and downwarping, and the hand is higher than the cutting part during use, conveniently cuts garrulous to the vertebral plate in the dish, adjusts the interval size of left side handle and right side handle of cutting through adjusting bolt position on the arc pole, adjusts promptly and holds apart from and cutting part open-ended size, can be when cutting the vertebral plate of fritter, and it is laborsaving to adjust to reduce to hold apart from and cutting part opening size, cuts more.

Description

Bone-crushing scissors for bone grafting

Technical Field

The utility model relates to the field of surgical instruments, in particular to bone-crushing scissors for bone grafting.

Background

The spine fusion operation is reported as early as 1911 in Hibbs and Albee respectively, has undergone more than 100 years of development so far, is mainly suitable for the conditions of vertebral destructive diseases, spinal instability, deformity prevention or correction and the like, and is successfully applied to the aspects of lumbago relieving, spine stability reconstruction, spine normal sequence restoration and the like, and is one of the important surgical operations for treating serious lumbar diseases by spine surgery at present, the lumbar vertebra bone grafting operation has a plurality of operation modes at present, and the operation modes which have appeared historically have 9 kinds of lumbar vertebra surgery targets which are consistent with that of lumbar vertebra surgery, at present, the most common operation modes are posterior IF (interstitial-free) intervertebral fusion P L, anterior intervertebral fusion A L and intervertebral fusion A L;

in the operation, a surgeon removes a vertebral arch plate, namely a vertebral plate, so that the surgeon can see and enter the nerve root, can trim the facet joints on the nerve root to allow more space for the nerve root, then clears the affected intervertebral disc and surrounding tissues thereof, scrapes the cartilage of the end plate until the bone surface oozes blood, implants a fusion device and sheared bone particles, implants bone from the vertebral arch plate removed in front, and takes an ilium bone block when the bone is insufficient;

when planting the bone, the vertebra arch board is great, does not well put into, need cut apart its with the bone scissors and put into again, and the bone scissors on the present market can cut apart the vertebral plate, still has some inconvenient parts, and current bone scissors can be cut into the fritter vertebral plate with big vertebral plate, when further cutting apart the fritter vertebral plate again, and its cutting part opening can't be transferred for a short time, and the distance of holding is the same with the distance of holding of cutting big vertebral plate when cutting apart, can do partly useless work, more power of wasting time.

SUMMERY OF THE UTILITY MODEL

The utility model provides a bone scissors for bone grafting, the bone scissors that can solve among the prior art exists the problem that can not adjust cutting part opening size.

A bone-crushing shear for bone grafting comprises a left shear handle, a right shear handle and a spring piece, wherein the left shear handle is hinged with the right shear handle through a hinge screw, the tops of the left shear handle and the right shear handle are both arc-shaped and bent downwards, one end of the spring piece is fixedly arranged on the inner side of the right shear handle, and the other end of the spring piece is abutted against the inner side of the left shear handle;

the inboard fixedly connected with arc pole in bottom of handle is cut on a left side, the inboard fixedly connected with arc of bottom of handle is cut on the right side, the one end department of arc seted up with arc pole matched with arc, one side of arc still seted up with the communicating logical groove of arc, a plurality of screw holes have been seted up on the arc pole uniformly, threaded hole female connection has the bolt, the bolt is located logical inslot.

Preferably, the included angle between the cutting edges of the left shear handle and the right shear handle and the vertical part of the left shear handle is 27 degrees.

Preferably, the left shear handle and the right shear handle are sleeved with rubber rings.

Preferably, the outer sides of the left shear handle and the right shear handle are fixedly connected with clamping blocks used for limiting the rubber ring to move upwards.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a cutting part is arc and downwarping, and the hand is higher than the cutting part during use, conveniently cuts garrulous to the vertebral plate in the dish, adjusts the interval size that the handle was cut on the left side and the right side was cut to the handle through adjusting bolt position on the arc pole, adjusts promptly and holds apart from and cutting part open-ended size, can adjust to shorten when cutting the vertebral plate of fritter and hold apart from and cutting part opening size, cuts more laborsavingly.

Drawings

Fig. 1 is a schematic structural view of the utility model when fully opened;

fig. 2 is a side view of the present invention;

fig. 3 is a schematic structural view when the utility model is completely folded;

FIG. 4 is a schematic structural view of the present invention when the grip distance is adjusted to be small;

fig. 5 is a cross-sectional view taken along line a-a of fig. 1.

Description of reference numerals:

1-left shear handle, 2-right shear handle, 3-spring piece, 4-arc rod, 5-arc plate, 6-arc groove, 7-through groove, 8-threaded hole, 9-bolt, 10-rubber ring and 11-fixture block.

Detailed Description

In the following, an embodiment of the present invention will be described in detail with reference to the drawings, but it should be understood that the scope of the present invention is not limited by the embodiment.

As shown in fig. 1 to 5, an embodiment of the present invention provides a bone-crushing shears for bone grafting, which includes a left shear handle 1, a right shear handle 2 and a spring leaf 3, wherein the left shear handle 1 is hinged to the right shear handle 2 through a hinge screw, the tops of the left shear handle 1 and the right shear handle 2 are both arc-shaped and are bent downward, one end of the spring leaf 3 is fixedly installed inside the right shear handle 2, and the other end of the spring leaf is abutted against the inside of the left shear handle 1;

the inner side of the right scissor handle 2 is the side close to the left scissor handle 1, and the inner side of the left scissor handle 1 is the side close to the right scissor handle 2;

the spring piece 3 is used for opening the left scissor handle 1 and the right scissor handle 2, and when the left scissor handle 1 and the right scissor handle 2 are tightly held, the opening of the blade part is gradually reduced until the blade part is closed;

an arc-shaped rod 4 is fixedly connected to the inner side of the bottom of the left shear handle 1, an arc-shaped plate 5 is fixedly connected to the inner side of the bottom of the right shear handle 2, an arc-shaped groove 6 matched with the arc-shaped rod 4 is formed in one end of the arc-shaped plate 5, a through groove 7 communicated with the arc-shaped groove 6 is further formed in one side of the arc-shaped plate 5, a plurality of threaded holes 8 are uniformly formed in the arc-shaped plate rod 4, bolts 9 are connected to the threaded holes 8 in a threaded mode, and the bolts 9 are located in the through groove 7;

for more convenient use, a plurality of bone scissors can be prepared before operation, for example, four bone scissors are respectively adjusted to different opening sizes before operation, when the bone scissors are required to be used in the operation, the proper bone scissors are selected according to the requirement to be directly taken for use, compared with the preparation of four common bone scissors with different opening sizes, the bone scissors can be mutually replaced, one common bone scissors is suddenly broken or lost, the other bone scissors can be adjusted to the same opening size, and the operation is more convenient;

the bolt 9 is screwed into different threaded holes 7, so that the distance between the tail ends of the left shear handle 1 and the right shear handle 2 can be changed;

further, the included angle between the cutting edges of the left scissor handle 1 and the right scissor handle 2 and the vertical part of the left scissor handle 1 is 27 degrees.

Further, the left scissor handle 1 and the right scissor handle 2 are sleeved with the rubber ring 10, so that the rubber ring 10 can be moved towards the tail end of the scissor handle in order to adjust the position of the bolt 9, the left scissor handle 1 and the right scissor handle 2 are tightened by the rubber ring 10, then the bolt 9 can be unscrewed by hands, the bolt 9 is screwed on a proper position, and the operation is safer and can be completed by one person.

Further, the handle 1 is cut on a left side with the equal fixedly connected with in the outside of the handle 2 is cut on the right side is used for the restriction the fixture block 11 that rubber circle 10 moved up, and upward the meaning of this here is toward articulated position, and when cutting handle 1 and the right side and cutting handle 2 tightly with the hand, the tension that rubber circle 10 received diminishes, and the rubber circle is easy to move toward the place that is close to articulated position, until taking off or removing to the cutting part from the cutting part, influences the operation, and fixture block 11 can block rubber circle 10, prevents that it from moving toward articulated position.

The working principle is as follows: before bone grafting, whether the bolt 9 is located in the threaded hole 8 closest to the right shear handle 2 is checked, then the vertebral plate is sheared into a small vertebral plate by repeatedly gripping and loosening the left shear handle 1 and the right shear handle 2, after the small vertebral plate is sheared, one hand grips the two shear handles, the other hand moves the rubber ring 10 downwards, namely the rubber ring 10 is located at the position shown in fig. 3, the hand gripping the shear handles can be loosened, then the position of the bolt 9 is changed, and then the rubber ring 10 is moved back to the original position, at the moment, the opening of the blade part is reduced, the grip distance is reduced, and the small vertebral plate is conveniently sheared into pieces.

The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the embodiments, and any changes that can be considered by those skilled in the art shall fall within the protection scope of the present invention.

Claims (4)

1. The bone-crushing scissors for bone grafting are characterized by comprising a left scissors handle, a right scissors handle and a spring piece, wherein the left scissors handle is hinged with the right scissors handle through a hinge screw, the tops of the left scissors handle and the right scissors handle are both arc-shaped and bent downwards, one end of the spring piece is fixedly arranged on the inner side of the right scissors handle, and the other end of the spring piece is abutted against the inner side of the left scissors handle;

the utility model discloses a pair of scissors, including left side cut handle, right side cut handle, the inboard fixedly connected with arc pole in bottom of left side cut handle, the inboard fixedly connected with arc of right side cut handle, the one end department of arc seted up with arc pole matched with arc, one side of arc still seted up with the communicating logical groove of arc, a plurality of screw holes have been seted up on the arc pole uniformly, threaded hole female connection has the bolt, the bolt is located logical inslot.

2. A bone scissors for bone grafting as set forth in claim 1, wherein the angle between the cutting edges of the left and right scissors handles and the vertical portion of the left scissors handle is 27 degrees.

3. A bone scissors for bone grafting as claimed in claim 2, wherein the left and right scissors handles are sleeved with rubber rings.

4. A bone-crushing shears as claimed in claim 3, wherein a block for limiting the upward movement of the rubber ring is fixedly connected to the outer side of each of the left and right shear handles.

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