CN201879807U

CN201879807U - Adjustable patella claw

Info

Publication number: CN201879807U
Application number: CN201020257950XU
Authority: CN
Inventors: 田志军
Original assignee: XIANGFAN HEDING MACHINARY CO Ltd
Current assignee: XIANGFAN HEDING MACHINARY CO Ltd
Priority date: 2010-07-07
Filing date: 2010-07-07
Publication date: 2011-06-29
Anticipated expiration: 2020-07-07

Abstract

The utility model discloses an adjustable patella claw which comprises at least two grab hooks; the upper part of each grab hook is hinged with a crisscross supporting frame; the rear end part of each grab hook is hinged with an adjustable pulling rod; the middle part of the crisscross frame is fixed with a bolt column; an adjustable sleeve is screwed outside the bolt column; a tensile crisscross frame is provided with a hole at the center so as to be sheathed outside the adjustable sleeve; the end part of the tensile crisscross frame is provided with a slot-shaped opening; and the upper part of the adjustable pulling rod passes through the slot-shaped opening of the tensile crisscross frame and is screwed with a nut on the slot-shaped opening. In the utility model, each grab hook can be controlled independently, during the clinic operation, each grab hook can be adjusted independently, thus achieving the best grabbing effect; the grab hook can clamp firmly, has no hollow phenomenon and has good fixing effect, thus achieving the best treatment effect; furthermore, a nickel-titanium alloy is used for replacing the existing memory alloy, thus greatly reducing the manufacturing cost and using cost and lightening the burden of a patient.

Description

The scalable patella claw

Technical field

This utility model relates to technical field of medical instruments, specifically is meant a kind of scalable patella claw.

Background technology

Along with the arrival of the increasing of vehicle accident, aged tendency of population, Patella fracture is more and more.The traditional treatment Patella fracture mainly contains following several:

1, steel wire circular ligate, this mode fixed effect is poor, and fracture the place ahead is easily separated, not too is fit to biomechanical principle, and the postoperative routine needs external plaster fixation, is unfavorable for early stage functional exercise;

2, steel wire internal fixation, after the vertical or horizontal boring of the patella after the reduction, the medical stainless steel silk penetrates to be tightened, and the patella of fracture is involutory fixing, and this method steel wire often occurs and fractures, and causes second operation, and the postoperative routine needs Gypsum Fibrosum auxiliary fixing outward;

3, Kirschner wire adds the steel wire internal fixation, be called for short tension band, behind the patella of involutory fracture, stringer penetrates two Kirschner wires in the patella diaphysis, and exposed portion is at the upper and lower utmost point of patella, and as fixing force, tighten with steel wire, this method complicated operation, involutory precision is not high, sliding or stinging out skin often appears in Kirschner wire, is unfavorable for the functional exercise of postoperative;

4, use patella claw.At present the patella claw of using clinically is the overall structure of the integral type made with the memorial alloy of costliness, realize distortion adjustment by memorial alloy, but its whole size dimension is fixed, when the patella of different sizes is treated, can't well grab and close patella, thereby hollow occur, not only influence fixed effect, and cause huge misery to the patient, can't reach the good curing purpose.It is the utility model patent of ZL200820224901.9 that the patent No. is arranged, a kind of adjusting patella claw is provided, reach the purpose of regulating the patella claw opening angle by the bolt of regulating the patella claw upper end, but the patella claw regulating power of this kind structure is limited, still can't thoroughly reach the purpose of holding.

The utility model content

The purpose of this utility model is at the deficiencies in the prior art, and a kind of scalable patella claw is provided, and it closes effect by regulating the size and the intensity of pressure thereby reach good grabbing, and improves therapeutic effect.

For achieving the above object, the technical scheme that this utility model is taked is, a kind of scalable patella claw comprises at least two grapples, it is characterized in that, described grapple top and cross supporting frame are hinged, and grapple rearward end and adjusting yoke are hinged; Cross supporting frame middle part set bolt post, the bolt column outside is screwed regulating sleeve, stretching cross central openings is set in the regulating sleeve outside, and slit opening is established in stretching cross end, and adjusting yoke top is passed the slit opening of stretching cross and is screwed nut thereon.

Described grapple is four.

Adjusting device is established at described regulating sleeve top.

Described adjusting device is to be located at the perforate at regulating sleeve top and to be threaded onto the interior rotary handle of perforate.

This utility model beneficial effect comprises:

1, each grapple of this utility model can independently be controlled, and can reach best grabbing and close effect at the situation independent control of each grapple during clinical manipulation, and clamping is firm, no hollow phenomenon, and good fixing effect reaches best therapeutic effect.

2, this utility model adopts the split-type structural design, needn't wholely adopt memorial alloy to make, and can directly adopt Nitinol to make, and can reduce manufacturing cost and use cost, relieve patient ' s burden greatly.

3, its grapple adopts the hinged securement mode, and front end can strut, and makes profile take place significantly to change, and uses so same type product can be fit to the trouble bone of multiple size, and accurately type selecting is applied widely.

Description of drawings

Fig. 1 is this utility model overall structure sketch map.

Fig. 2 this utility model cross supporting frame structural representation.

Fig. 3 this utility model regulating sleeve structural representation.

Fig. 4 this utility model stretching cross structure sketch map.

Fig. 5 this utility model adjusting yoke structural representation.

Fig. 6 this utility model grapple structural representation.

The specific embodiment

Below in conjunction with drawings and Examples this utility model structure and operation principle are elaborated.

Be illustrated in figure 1 as this utility model overall structure sketch map, it mainly comprises cross supporting frame 2 and grapple 1, and this utility model is embodiment with four grapples.Cross supporting frame 2 surfaces offer four annulus 17, and each annulus is at drift angle place opening, and are provided with hole 8 at opening part, cross supporting frame 2 middle part set bolt posts 9, as shown in Figure 2.Screw thread is established in regulating sleeve 5 inside, twists to close with the bolt column 9 of cross supporting frame to be connected, and regulating sleeve 5 tops are established adjusting device the height of regulating sleeve 5 is regulated.This utility model is embodiment with the hole 12 at regulating sleeve 5 tops and the rotary handle 6 that is threaded onto in this hole, as Fig. 3.Stretching cross 4 central openings 11, its four ends are equipped with slit opening 10, as Fig. 4.As the distortion to this utility model structure, this slit opening can also be made ellipse or rectangle etc.Regulating sleeve 5 is passed in hole 11, and stretching cross 4 is set in regulating sleeve 5 outsides.Adjusting yoke 3 is thick cylindrical in thin bottom, top, and the top cylindrical outer surface is established screw thread, and slit opening 13 is established in the bottom, and is opening hole 14 perpendicular to the both sides of slit opening, as shown in Figure 5.Adjusting yoke 3 passes the slit opening 10 of stretching cross, and its first half is positioned at stretching cross 4 tops and installs nut 7, and its latter half is positioned at stretching cross 4 bottoms.Grapple 1 top has hole 15, and rearward end perforate 16 simultaneously is as Fig. 6.Hole 15 is corresponding with the hole 8 on the cross supporting frame 2, and by bearing pin grapple 1 and cross supporting frame 2 is hinged and connected.Grapple 1 rearward end is plugged in the slit opening 13 of adjusting yoke 3 bottoms, and by hole 14 and hole 16 grapple 1 and adjusting yoke 3 is hinged and connected.

When this utility model uses, earlier four grapples are opened by the required size size, then four adjusting yokes are installed the slit opening of overstretching cross, by regulating rotary handle regulating sleeve is moved along on the bolt column, the stretching cross moves simultaneously with moving four adjusting yokes of shipper pole on the regulating sleeve, thereby four inside twisteds of grapple are held, reach the promptly purpose of patella.If the hollow phenomenon appears in single grapple or the intensity of grabbing is excessive, then can be by regulate connecting the nut on the adjusting yoke that is loaded on this grapple, reach the purpose of moving or moving down adjusting yoke, thereby make the inside twisted of grapple or outwards unclamp, reach best grabbing and close effect.This utility model adopts the split-type structural design, thereby can adopt Nitinol to substitute existing memorial alloy, can reduce manufacturing cost and use cost greatly, for the patient has alleviated burden.

Claims

1. a scalable patella claw comprises at least two grapples, it is characterized in that, described grapple (1) top and cross supporting frame (2) are hinged, and grapple (1) rearward end and adjusting yoke (3) are hinged; Cross supporting frame (2) middle part set bolt post (9), bolt column (9) outside is screwed regulating sleeve (5), stretching cross (4) central openings (11) is set in regulating sleeve (5) outside, slit opening (10) is established in stretching cross (4) end, and adjusting yoke (3) top is passed the slit opening (10) of stretching cross and is screwed nut (7) thereon.

2. scalable patella claw according to claim 1 is characterized in that, described grapple (1) is four.

3. scalable patella claw according to claim 1 is characterized in that, adjusting device is established at described regulating sleeve (5) top.

4. scalable patella claw according to claim 3 is characterized in that, described adjusting device is for being located at the perforate (12) at regulating sleeve (5) top and being threaded onto the interior rotary handle (6) of perforate.