CN212015871U - Anti-rotation depth limiting impactor for iliac bone grafting - Google Patents

Abstract

The utility model discloses an anti-rotation depth limiting impactor for iliac bone grafting, which comprises a clamping part and a limiting device; the clamping part comprises handles, the middle parts of the two handles are hinged, the head ends of the handles are provided with clamping bodies, the inner walls of the clamping bodies are provided with clamping pieces, elastic elements are arranged between the clamping pieces and the clamping bodies, the clamping pieces are made of elastic materials, the head ends of the clamping bodies are provided with clamping jaws, and the clamping jaws are made of elastic materials; the limiting device comprises a limiting rod. The utility model discloses can restrict the impactor and strike the degree of depth, prevent that the ilium piece is rotatory, reduce the ilium piece damage deformation in centre gripping process.

Description

Anti-rotation depth limiting impactor for iliac bone grafting

Technical Field

The utility model relates to the field of medical equipment, especially, relate to an anti-spin limit deep impactor for ilium bone grafting.

Background

Bone grafting is the surgical implantation of bone tissue to the site of a bone defect, requiring reinforcement or fusion in a patient. Because the bone sources are different, the bone transplantation is divided into autologous bone transplantation and allogeneic bone transplantation, and with the progress of refrigeration equipment and sterile preservative technology, allogeneic bones are stored in a bone bank. The common areas include bone defects, nonunion of fractures, filling of cavities left by cystic lesions or scraping of benign tumors, spinal and joint fusion, etc. The autologous bone graft may be taken from the medial anterior aspect of the tibia, the superior fibula, the iliac wing, the ribs and the healthy bone distal to the severed limb.

In the process of iliac bone grafting, the impactor is required to knock iliac blocks, most of the iliac blocks are irregular in shape, the iliac blocks are prevented from rotating and deviating due to uneven stress in the knocking process, if the iliac blocks are clamped vigorously, the iliac blocks are easy to damage and deform, and in the knocking process, the iliac blocks are easy to separate from the impactor, and are displaced, so that the iliac blocks are bad in position and fall into a vertebral canal to damage spinal cords and nerves.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an ilium is planted bone and is prevented revolving limit and hit ware deeply can restrict and hit the ware and strike the degree of depth, prevents that the ilium piece is rotatory, reduces the ilium piece damage deformation in the centre gripping process.

In order to achieve the purpose, the utility model adopts the following technical proposal to realize:

the utility model discloses an anti-rotation depth limiting impactor for iliac bone grafting, which comprises a clamping part and a limiting device;

the clamping part comprises handles, the middle parts of the two handles are hinged, the head ends of the handles are provided with clamping bodies, the inner walls of the clamping bodies are provided with clamping pieces, elastic elements are arranged between the clamping pieces and the clamping bodies, the clamping pieces are made of elastic materials, the head ends of the clamping bodies are provided with clamping jaws, and the clamping jaws are made of elastic materials;

the limiting device comprises a limiting rod.

Preferably, the elastic element is a second spring or a spring plate.

Preferably, the inner surface of the clamping piece is provided with a friction bulge.

Preferably, the tail end of the handle is provided with a first clamping part.

Preferably, still including hitting into the portion, hit into the portion including hitting into the pole, two hit into the pole and set up side by side, two hit into and have the clearance between the pole, one hits into the pole inboard and is equipped with spacing latch, and the pole setting is hit into to the gag lever post perpendicular to, and the gag lever post middle part has linked firmly first spring, and first spring hits into pole sliding fit with another.

Preferably, the tail end of the striking part is provided with a striking part.

Preferably, the second clamping part is arranged at the tail part of the striking part.

Preferably, the outer surface of the striking rod is provided with scale marks along the length direction.

Preferably, the clamping body is provided with a plurality of limiting holes at equal intervals along the length direction, and the limiting holes are matched with the limiting rods.

Preferably, the tail end of one handle is provided with a locking latch, the tail end of the other handle is hinged with a locking rack, and the locking latch is meshed with the locking rack.

The utility model has the advantages that:

1. the utility model discloses can carry out the centre gripping to the ilium piece and prevent the rotation, prevent that the ilium piece atress is uneven to produce rotation and skew at the in-process that strikes.

2. The utility model discloses be equipped with spring, holding piece in the clamping part, deformation can take place for the holding piece, can carry out fine control and accurate the striking to the ilium piece of unidimensional, prevents to hit the in-process ilium piece and slides in the clamping part, has increased the area of contact of ilium piece with the clamping part simultaneously, can also prevent to hit the damage deformation of in-process to the ilium piece at ilium piece centre gripping.

3. The utility model discloses the holding piece inboard surface has protruding design, can increase the power of controlling and the stability to the ilium piece, further prevents to slide and drops.

4. The utility model discloses the clamping part is equipped with the jack catch, not only can increase the power of controlling and the clamping-force ability to the ilium piece, also prevents simultaneously to strike the in-process too violent with strength, though hit the portion of going into and be deepened by the limit, the ilium piece drops and hits the part and leave, produces to shift and then the position is bad, take off into spinal canal injury spinal cord and nerve.

5. The utility model discloses well portion of strikeing into adopts the design of scale limit for depth can accurate limit for depth, prevents to hit the in-process portion of strikeing into and gets into too much and cause the position bad or damage spinal cord nerve.

6. The utility model discloses be equipped with the first simple and convenient control the portion of holding that holds between the arms portion can relax, be convenient for take out and hit the portion of going into.

Drawings

FIG. 1 is a schematic diagram of a first embodiment;

FIG. 2 is a schematic view of a clamping portion according to a first embodiment;

FIG. 3 is a front view of the striking section according to the first embodiment;

FIG. 4 is a side view of the striking section according to the first embodiment;

FIG. 5 is a diagram illustrating a second embodiment;

FIG. 6 is a schematic view of the second embodiment in use.

In the figure: 1-handle, 2-clamping body, 3-jaw, 4-clamping piece, 5-second spring, 6-first clamping part, 7-limiting rod, 8-driving rod, 9-knocking part, 10-second clamping part, 11-limiting latch, 12-first spring, 13-limiting hole, 14-locking rack, 15-locking latch, 16-cone and 17-bone block.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings.

The "inner" direction in this application refers to a direction toward the center line of the grip portion or the striking portion.

As shown in fig. 1-4, the utility model comprises a clamping part and a striking part;

the clamping part comprises handles 1, the middle parts of the two handles 1 are hinged, the head ends of the handles 1 are provided with clamping bodies 2, the head ends of the clamping bodies 2 are provided with clamping jaws 3, the clamping jaws 3 are made of elastic materials, the inner walls of the clamping bodies 2 are provided with clamping pieces 4, elastic elements are arranged between the clamping pieces 4 and the clamping bodies 2 and are second springs 5 or elastic pieces, the clamping pieces 4 are made of elastic materials, friction protrusions are arranged on the inner surfaces of the clamping pieces 4, the tail ends of the handles 1 are provided with first clamping parts 6, the inwards extending lengths of the clamping jaws 3 are 1 mm-2 mm, materials such as rubber can be adopted, and damage to the ilium blocks is reduced;

the striking part comprises a limiting rod 7 and a striking rod 8, a striking part 9 is arranged at the tail end of the striking part, a second clamping part 10 is arranged at the tail part of the striking part, the two striking rods 8 are arranged side by side, a gap is formed between the two striking rods 8, scale marks are arranged on the outer surface of each striking rod 8 along the length direction, a limiting latch 11 is arranged on the inner side of each striking rod 8, the limiting rod 7 is perpendicular to the striking rods 8, a first spring 12 is fixedly connected to the middle part of each limiting rod 7, the first spring 12 is in sliding fit with the other striking rod 8, and the striking part 9 is in a mushroom shape suitable for striking;

wherein the clamping piece 4 can be a metal sheet or an elastic sheet such as plastic, the friction bulge is a small bulge arranged on the surface of the clamping piece 4, the friction coefficient is improved, the ilium block can be conveniently clamped, the first clamping part 6 can be annular or strip-shaped, the control handle 1 can be conveniently moved, and the clamping part can be conveniently kept fixed when the driving part is knocked in,

to hitting portion, spacing latch 11's the top that highly equals spacing slide caliper at least hits the distance between the pole 8 to another, makes things convenient for the motion of gag lever post 7, first spring 12 with hit pole 8 sliding fit, can adopt cooperation mechanisms such as spout to make the one end of first spring 12 slide in the spout etc. mode and prevent that gag lever post 7 from droing, the second is held portion 10 and is used for the adaptation thumb to fix when knocking.

During actual use, the clamping part is used for clamping the ilium block, the clamping piece 4 can deform, the ilium blocks with different sizes can be well controlled and accurately knocked, the ilium block is prevented from sliding in the clamping part in the knocking-in process, meanwhile, the contact area of the ilium block and the clamping part is increased, the damage and deformation of the ilium block in the ilium block clamping and knocking-in process can be prevented, the clamping piece 4 can be guaranteed to stably clamp the ilium block by the second spring 5, the inner side surface of the clamping piece 4 is provided with a convex design, the control force and stability of the ilium block can be increased, the ilium block is further prevented from sliding and falling off, meanwhile, the clamping part is provided with the clamping claw 3, the control force and the clamping capacity of the ilium block can be increased, the excessive force is prevented from being used in the knocking-in process, although the knocking-in part is limited in depth, the ilium block is separated from the knocking-in part, the displacement is generated, and the position is not good, Spinal cord and nerve injury by expulsion into the spinal canal;

and the part of pounding is through adjusting the position of gag lever post 7, push out from between the initial spacing latch 11 promptly, select the spacing latch 11 of adaptation, loosen the back, under the effect of first spring 12, gag lever post 7 is by between the spacing latch 11 that the card is gone into to correspond, will pout the part and strike from the clamping part afterbody to the head, and gag lever post 7 card is in the articulated department of handle 1, and then plays the effect of adjusting the depth of pounding.

As shown in fig. 5, the second embodiment is different from the first embodiment in that the second embodiment does not have a striking portion, the limiting function of the second embodiment is that a plurality of limiting holes 13 are formed at equal intervals along the length direction through the clamping body 2, the limiting holes 13 are adapted to the limiting rod 7, the tail end of one handle 1 is provided with a locking latch 15, the tail end of the other handle 1 is hinged to a locking rack 14, and the locking latch 15 is engaged with the locking rack 14.

As shown in fig. 6, in the second embodiment, when in use, the limiting rod 7 is inserted into the limiting hole 13 of the corresponding clamping body 2 according to a required depth, the clamping body 2 is used to clamp the bone block 17, the locking is performed through the locking latch 15 and the locking rack 14, the bone block 17 is knocked into the space between the adjacent cones 16 at the tail end of the knocking handle 1, and when the proper depth is reached, the limiting rod 7 abuts against the cones 16 to limit the position.

Of course, the present invention may have other embodiments, and those skilled in the art may make various corresponding changes and modifications according to the present invention without departing from the spirit and the essence of the present invention, and these corresponding changes and modifications should fall within the protection scope of the appended claims.

Claims (10)

1. The utility model provides an ilium bone grafting is prevented revolving limit and is strikeed ware, its characterized in that: comprises a clamping part and a limiting device;

the clamping part comprises handles (1), the middle parts of the two handles (1) are hinged, the head ends of the handles (1) are provided with clamping bodies (2), the inner walls of the clamping bodies (2) are provided with clamping pieces (4), an elastic element is arranged between each clamping piece (4) and each clamping body (2), the clamping pieces (4) are made of elastic materials, the head ends of the clamping bodies (2) are provided with clamping claws (3), and the clamping claws (3) are made of elastic materials;

the limiting device comprises a limiting rod (7).

2. The impactor of claim 1, wherein: the elastic element is a second spring (5) or a spring sheet.

3. The impactor of claim 1, wherein: the inner surface of the clamping sheet (4) is provided with a friction bulge.

4. The impactor of claim 1, wherein: the tail end of the handle (1) is provided with a first clamping part (6).

5. The impactor of claim 1, wherein: still including hitting into the portion, hit into the portion including hitting into pole (8), two hit into pole (8) and set up side by side, two hit into have the clearance between pole (8), one hits into pole (8) inboard and is equipped with spacing latch (11), and pole (8) setting is hit into to gag lever post (7) perpendicular to, and gag lever post (7) middle part has linked firmly first spring (12), and first spring (12) hit into pole (8) sliding fit with another.

6. The impactor of claim 5, wherein: the tail end of the striking part is provided with a striking part (9).

7. The impactor of claim 5, wherein: the second clamping part (10) is arranged at the tail part of the striking part.

8. The impactor of claim 5, wherein: the outer surface of the striking rod (8) is provided with scale marks along the length direction.

9. The impactor of claim 1, wherein: the clamping body (2) is provided with a plurality of limiting holes (13) at equal intervals along the length direction, and the limiting holes (13) are matched with the limiting rods (7).

10. The impactor of claim 1, wherein: the tail end of one handle (1) is provided with a locking latch (15), the tail end of the other handle (1) is hinged with a locking rack (14), and the locking latch (15) is meshed with the locking rack (14).

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