CN200998307Y

CN200998307Y - Embedding pressing type osseous pin extractor

Info

Publication number: CN200998307Y
Application number: CNU200720031174XU
Authority: CN
Inventors: 张华�; 张德胤
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-01-27
Filing date: 2007-01-27
Publication date: 2008-01-02
Anticipated expiration: 2017-01-27

Abstract

The utility model belongs to the medical appliance, which comprises a long handle (1), a slide rod (2), a short handle (6), a right spring steel plate (5), and a left spring steel plate (7). The utility model is characterized in that both the left and right spring steel plates (7) and (5) are respectively fixed at the tail ends of the short handle (6) and the long handle (1) through the screw (4), a convex block (11) of the long handle (1) is inserted into the long groove (14) of the slide rod (2) and enters the baffle groove (13), one end of the short handle (6) is penetrated through a through cavity (12) of the long handle (1), to insert a semi-round groove (16) of the long handle (1) on a cylindrical pin (3), and the long handle (1) and the short handle (6) are fixed through a screw (8). The utility model has the advantages of simple structure, low cost, less expense, easy manufacturing and easy popularization in hospitals in counties and towns. The shortcoming that the prior osseous pin extractor is one-way forced is overcome, the pulling force of the osseous pin extractor become large, the osseous pin extractor is forced uniformly and slowly, and the utility model is firm and durable. The operation is simple, the opening length of on patients is small, the conventional opening of 5 to 8 cm is reduced to the micro-invasion opening of 0.5 cm, and the wound is small, which is easily accepted by the patients.

Description

A kind of embedding pressure type osseous pin extractor

Technical field

This utility model relates to a kind of medical apparatus and instruments, more specifically to a kind of embedding pressure type osseous pin extractor that is used for bone surgery.

Background technology

The osseous pin extractor that uses clinically is impacting type, screw press latched type structure at present, and effort is used in operation inconvenience so on the one hand.Because single load bearing causes drag hook tensile strength low, the drag hook fracture takes place often, drag hook becomes the shortcomings such as screw thread distortion of straight or pull bar, influences normally carrying out of operation.When taking out osseous pin, exist the edge of a knife long again on the other hand, wound is big, and patient has the feared state of mind.

The utility model content

The technical problems to be solved in the utility model is: provide a kind of simple in structure, pulling force is big, and is stressed even, easily processing, easily universal, sturdy and durable.Simple to operate, make patient's edge of a knife little, wound is little, a kind of embedding pressure type osseous pin extractor that patient is easy to accept.

This utility model comprises long handle, slide bar, short handle, right steel spring plate, left spring steel plate, its characteristics are: left and right steel spring plate is fixed on the tail end of short handle, long handle respectively by screw, and the protruding end of left spring steel plate is inserted with the groove ends of right steel spring plate and is connected.The elongated slot that the projection of long handle inserts slide bar enters in the retaining groove, and an end of short handle is by the cavity of long handle, its half slot is inserted on the straight pin in the arc groove of long handle, and long handle is fixedlyed connected by screw with short handle.The top of long handle is provided with circular hole, is provided with projection above it, and the centre is a cavity, and cavity is provided with screw.The upper end of short handle is provided with semicircle orifice, screw successively.Be provided with microscler arc groove above the pin end of slide bar, the other end of slide bar bottom surface is provided with elongated slot, arc groove successively, is provided with retaining groove in the elongated slot, is provided with straight pin in the arc groove.

This utility model is simple in structure, and cost is low, and expense is few, easily processing, easily in the county, township level hospital popularizes.Changed the shortcoming of existing osseous pin extractor single load bearing, made osseous pin extractor pulling force big, stressed evenly mild, sturdy and durable.Simple to operate, make patient's edge of a knife little, become conventional otch 5-8cm and be mini-incision 0.5cm, wound is little, and patient is easy to accept.

Description of drawings

Below in conjunction with accompanying drawing this utility model is described in further detail.

Fig. 1 is this utility model external form figure;

Fig. 2 is this utility model structural representation;

Fig. 3 is that this utility model left spring steel plate 7 inserts sketch map with right steel spring plate 5;

Fig. 4 is the front view of this utility model slide bar 2;

Fig. 5 is the upward view of Fig. 4;

Fig. 6 is the vertical view of Fig. 4;

Fig. 7 is an A place enlarged drawing among Fig. 2;

Fig. 8 is long handle 1 sketch map in this utility model;

Fig. 9 is short handle 6 sketch maps in this utility model;

Figure 10 is the side view of Fig. 9.

The specific embodiment

In Fig. 1,2,3,7,8,9,10: left and right

steel spring plate

7,5 is fixed on the tail end of short handle 6, long handle 1 respectively by screw 4, and the protruding end of left spring steel plate 7 is inserted with the groove ends of right steel spring plate 5 and is connected.Long handle 1 is the rifle shape, and its top is provided with circular hole 9, and the aperture is 3.6mm, and effect is: the pin end of slide bar 2 is passed through.Be provided with projection 11 above the long handle 1, its effect is: the retaining groove 13 on the slide bar 2 is moved along projection 11 horizontal directions.The centre is a cavity 12, and its effect is: an end that makes short handle 6 is by cavity 12, and cavity 12 is provided with screw 17.The upper end of short handle 6 is provided with half slot 16, screw 18 successively.The elongated slot 14 that projection 11 on the long handle 1 inserts slide bar 2 enters retaining groove 13, one end of short handle 6 is by the cavity 12 of long handle 1, its half slot 16 is inserted on the straight pin 3 in the arc groove 15 on the slide bar 2, and long handle 1 is fixedlyed connected by the screw 18 on the screw on the long handle 1 17, the short handle 6 by screw 8 with short handle 6.Long handle 1, short handle 6, left and right

steel spring plate

7,5 is one-shot forming.

In Fig. 4,5,6: be provided with microscler arc groove 10 above the pin end of slide bar 2, the front end of slide bar 2 is a taper, and its effect is: be beneficial to the chimeric and clamping with osseous pin.The other end of slide bar 2 bottom surfaces is provided with elongated slot 14, arc groove 15 successively, is provided with retaining groove 13 in the elongated slot 14, and its effect is: block the projection 11 on the long handle 1, retaining groove 13 can be moved along projection 11 horizontal directions.Be provided with straight pin 3 in the arc groove 15, its effect is: the half slot 16 on the short handle 6 is inserted on the straight pin 3, short handle 6 is that rotate in the center of circle with screw 8, drives half slot 16 and rotates in arc groove 15 around straight pin 3, moves forward along projection 11 horizontal directions on the long handle 1 thereby drive slide bar 2.Slide bar 2 is one-shot forming.

This utility model is work like this:

Circular hole on this utility model long handle 1 top 9 alignings are imbedded the intravital osseous pin of people, then with holding tight long handle 1 and short handle 6, slide bar 2 is moved forward, the pin end of slide bar 2 enters in the human body by the circular hole 9 on long handle 1 top, at this moment the microscler arc groove on the slide bar 2 pin ends 10 and osseous pin are terminal chimeric and clamp osseous pin, this moment, continue to hold with a firm grip long handle 1 and short handle 6 were extracted human body together with extractor and osseous pin.

Claims

1, a kind of embedding pressure type osseous pin extractor, comprise long handle (1), slide bar (2), short handle (6), right steel spring plate (5), left spring steel plate (7), it is characterized in that: left and right steel spring plate (7), (5) are fixed on the tail end of short handle (6), long handle (1) respectively by screw (4); The protruding end of left spring steel plate (7) is inserted with the groove ends of right steel spring plate (5) and is connected; The elongated slot (14) that projection (11) on the long handle (1) inserts slide bar (2) enters retaining groove (13), one end of short handle (6) is by the cavity (12) of long handle (1), its half slot (16) is inserted on the straight pin (3) in the arc groove (15) on the slide bar (2), and long handle (1) is fixedlyed connected by screw (8) with short handle (6).

2, a kind of embedding pressure type osseous pin extractor according to claim 1, it is characterized in that: the top of long handle (1) is provided with circular hole (9), is provided with projection (11) above it, and the centre is cavity (12), and cavity (12) is provided with screw (17).

3, a kind of embedding pressure type osseous pin extractor according to claim 1, it is characterized in that: the upper end of short handle (6) is provided with semicircle orifice (16), screw (18) successively.

4, a kind of embedding pressure type osseous pin extractor according to claim 1, it is characterized in that: be provided with microscler arc groove (10) above the pin end of slide bar (2), the other end of slide bar (2) bottom surface is provided with elongated slot (14), arc groove (15) successively, be provided with retaining groove (13) in the elongated slot (14), be provided with straight pin (3) in the arc groove (15).