CN2857855Y

CN2857855Y - Surgery screw clamp

Info

Publication number: CN2857855Y
Application number: CN 200520019467
Authority: CN
Inventors: 陶忠生
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-05-13
Filing date: 2005-05-13
Publication date: 2007-01-17
Anticipated expiration: 2015-05-13

Abstract

A pair of bolt pliers for orthopedic operation adapted for cutting steel wires and steel needles, moulding steel plates, in particular adapted for loading and unloading of stripping fracture fixation bolt caps, include a nose, a handle, a rotary axis, and three nail-nipping holes on the nose, a cutting knife, and an elastic support steel sheet on the handle, characterized in that elliptic holes of diversified sizes are disposed on the pliers nose and the elastic steel sheet is disposed on the handle. The beneficial effects are: based on the functions of cutting, nipping and twisting steel plates and steel nails, a special function of twisting and unloading bolts deep in muscles is provided; the pliers can be used with multiple angles in straight or leaning directions, and the nipping strength is enlarged for ten times by changing from two points touching to pressing by a plurality of points around; the handle can open automatically; the pliers have a simple structure and is easy for production.

Description

The surgical screw pincers

Affiliated technical field

This utility model relates to the jaw type instrument that a kind of bone surgery is used, and is applicable to cut off the steel wire draw point moulding steel plate, the loading and unloading when especially being suitable for fracture fixation screw head of a nail slide fastener.

Background technology

At present, cutting the pincers of twisting the draw point steel plate screw in the known bone surgery is that contour structures and hardware ﹠ tools cutting pliers are same or similar, is commonly called as vice, and daily life and repair of machine are commonly used.In bone surgery, the screw head of a nail commonly used is an interior hexagonal or a word screw, slide fastener phenomenon when often running into screw cap and screwdriver in the operation and screwing, in take-down time during internal fixation steel plate of a specified duration, screw combines firmly with skeleton, and is positioned at the muscle depths, extremely difficult removal behind the slide fastener.Can only adopt the most advanced and sophisticated clamping head of a nail of vice to screw, or the method removal of osteotome bone drill reaming, vice is most advanced and sophisticated level and smooth, can only 2 limited contacts can not clamp the head of a nail effectively, bone drill enlarges the bone hole and has caused skeleton destruction, effect is all undesirable, sometimes even can't the removal screw, have increased operating difficulty and patient's misery greatly.Especially fixing more when take out the back at the fracture of femoral neck hollow nail, hollow nail is pre-large post-small and the extremely difficult removal of self-locking action arranged.Repeatedly inquiring in the national academic conference, this is ubiquitous problem.After summing up repeatedly clinical experience, make the porous pliers for screws, can dismantle different big Screws between 2.5 millimeters to 6.5 millimeters flexibly effectively, by repeatedly clinical use checking, respond well.

The utility model content

Not enough in order to overcome existing pincers, this utility model provides a kind of new shape porous pincers, has increased its convenient, flexible strong practicality.

The technical scheme that its technical problem that solves this utility model adopts is: wedge shape removes 1/3rd in the front side, top of cutting pliers jaw commonly used, the top, front forms an inclined-plane, vertical inclined-plane jaw seam is made 3 * 6 millimeters oval holes, and dark 5 millimeters, the hole wall has serration; Vertical mouth seam is made 4 * 8 millimeters oval holes on the jaw top, and dark 5 millimeters, the hole wall has serration; This two hole is the orthopaedics screw of the various models of clamping effectively, also can multi-angle use flexibly in the muscle deep layer; Add elastic steel sheet at pliers grip, can automatically spring open; But casting one-shot forming.Clinic trial, effect is remarkable.

The beneficial effects of the utility model are: in original shearing, on the basis of clamping distortion steel plate steel nail function, more increased the function of special unloading muscle deep layer screw, can directly use to oblique multi-angle, and clamping strength becomes multiple spot by 2 contacts and encircles pressurization, increase 10 times, handle can automatically spring open.Simplicity of design is easy to make,

Description of drawings

Below in conjunction with drawings and Examples this utility model is further specified

Fig. 1 vertical view Fig. 2 left view Fig. 3 front view Fig. 4 right view Fig. 5 rearview Fig. 6 longitudinal section

(1) is to have among Fig. 6 on the inclined-plane, an inclined-plane among Fig. 2---(2) elipse hole.

Among Fig. 6: the clip nail hole of (1) (2) (3) for varying in size, (4) are shears, and (5) are elastic steel sheet, and (6) are jaw, and (7) are rotating shaft, (8) are handle.

This instrument mainly is the design of jaw, and the end is looked no special, the Therefore, omited bottom view.

The specific embodiment

Below in conjunction with drawings and Examples this utility model is described in detail

In Fig. 6, (1) is half of elipse hole at jaw tip; (2) be half of elipse hole on the inclined-plane, front side; (3) half of the elipse hole that connects for front-back; (1) (2) (3) Dong Bijun has teeth groove, and teeth groove is along hole wall axially-aligned, the symmetrical thereupon interlock of hole during the jaw interlock, can from positive, the side multi-angle is strong that screws clamp is screwed; (4) be shears, be used to cut off the steel wire draw point and use; (5) be elastic steel sheet, an end is fixed on the handle, and the other end and offside steel disc are concavo-convex intercalation respectively, and energy elasticity struts handle opens jaw automatically; (6) be jaw, energy folding holding articles; (7) be rotating shaft, the folding on this axle of the related jaw of handle moves back and forth; (8) be handle, can make jaw open or close, holding articles with the hands gripping.

Pincers of the present utility model can be used in the strong flexibly operation.

Claims

1. novel surgical screw pincers comprise jaw, and handle, rotating shaft, and the elasticity on 3 clip nail holes, shears and the handles on the jaw struts steel disc, it is characterized in that, jaw are provided with the oval hole that varies in size and the elastic steel sheet on the handle.

2. according to the described surgical screw pincers of claim 1, it is characterized in that there is an oval hole on the jaw top, there is an oval hole upper end, front on the inclined-plane, the elipse hole that connects before and after forward, central part has, and Dong Bishang has the teeth groove of axially-aligned.

3. according to the described surgical screw pincers of claim 1, it is characterized in that an arc elastic steel sheet is arranged respectively on two handles, one end of steel disc uses screw fixings in handle, at its lower end, the other end is recessed and convex form respectively, and intercalation can make handle drive jaw and open from dynamic elasticity together mutually.