CN202426573U

CN202426573U - Bended wrench

Info

Publication number: CN202426573U
Application number: CN2012200206015U
Authority: CN
Inventors: 陈伟; 张奇; 张英泽
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-01-17
Filing date: 2012-01-17
Publication date: 2012-09-12
Anticipated expiration: 2022-01-17

Abstract

The utility model discloses a bended wrench, which belongs to the technical field of orthopedic medical instruments, and is used to screw devices in the subcutaneous when having an orthopaedic surgery. The technical scheme is that the bended wrench comprises a wrench head, a cross rod and a wrench handle, wherein the wrench head is of a N shape, the inner transverse diameter of the N shape is matched with the outer diameter of a clamping position of a screwed device, one end of the cross bar is connected on the center of the upper end of the wrench head, and is vertical to the plane of the wrench head, the other end of the cross rod is connected with one end of the wrench handle, the cross rod is vertical to the wrench handle, and the length of the cross rod is bigger than the smallest distance from an operative incision to the outer end of the clamping position of the screwed device. The wrench head and the cross rod can be inserted from the operative incision to be pushed to the middle portion when having a surgery, a connecting rod of a sacrum distraction device is rotated by the wrench head, and the sacrum distraction device is screwed, thereby preventing the operative incision from increasing, and also eliminating risk caused by operative wound and postoperative incision complications. The bended wrench is simple in structure and convenient to use, and solves the difficult problems that the sacrum distraction device is not conveniently screwed when being used.

Description

A kind of spanner of bending

Technical field

The spanner that this utility model uses when relating to a kind of bone surgery belongs to orthopaedic medical treatment utensil technical field.

Background technology

In the case of orthopedics injuries, how posterior ring pelvic damage, especially sacroiliac fracture-dislocation and fracture of the sacrum are caused by the high-energy damage, and its Clinics and Practices is one of challenge of facing of orthopedist.For sacroiliac joint dislocation, rumpbone compression or diastatic fracture, need at first the reduction of the fracture and fix, apparatuses such as blade plate commonly used at present, C-clamp can not be realized effectively resetting and fixing simultaneously.In order to treat this type damage, Chinese patent ZL 2,008 1 0079334.7 discloses a kind of Rumpbone dilator, can be called adjustable Wicresoft pelvis blade plate again.In clinical, this adjustable Wicresoft pelvis blade plate is used to treat sacroiliac fracture-dislocation and fracture of the sacrum, has obtained good effect.In operation process, need be that two little otch of vertical shape are done at the center with the posterior superior iliac spine, insert Rumpbone dilator, use spanner then, it is screwed.But in operation, find; Pass through operative incision; Usually can only spanner be inserted the outside that is fixed on the Rumpbone dilator connecting rod, can not effectively screw, often need do a longitudinal incision in the centre of two otch; Appear the connecting rod middle part of Rumpbone dilator, so just can reach the requirement of screwing.This method has also just increased the risk that operation wound and postoperative wound complication take place owing to increased otch, and it is very necessary therefore designing a kind of suitable spanner.

The utility model content

This utility model technical problem to be solved provide a kind of need not to increase in the middle of can effectively the screw spanner of bending of connecting rod of Rumpbone dilator of operative incision.

The technical scheme that solves the problems of the technologies described above is:

A kind of spanner of bending; Forming, driving end is a N shape by driving end, cross bar, wrench for it, and transverse diameter is complementary with the external diameter of clamping place of the device of being screwed in the N shape; One end of cross bar is connected the upper end central authorities of driving end; Perpendicular with the plane of driving end, the other end of cross bar is connected with an end of spanner handle, and cross bar and spanner are perpendicular.

The spanner of above-mentioned bending, the length of said cross bar is greater than the minimum range of operative incision to the clamping place outer end of the device of being screwed.

The usefulness of this utility model is:

The spanner of this bending; Can when operation, driving end and cross bar be inserted to the centre promotion from incision,, Rumpbone dilator screwed with the connecting rod of driving end rotation Rumpbone dilator; Thereby avoided the increase otch, also eliminated risk because of operation wound and the generation of postoperative wound complication.This utility model is simple in structure, easy to use, to solve be the difficult problem of inconvenience of screwing during Rumpbone dilator uses, and is operating theater instruments very necessary when using Rumpbone dilator in clinical.

Description of drawings

Fig. 1 is the structural representation of this utility model.

Labelling is following among the figure: driving end 1, cross bar 2, wrench are 3.

The specific embodiment

Show that this utility model is made up of driving end 1, cross bar 2, wrench to 3 among the figure.

Driving end 1 is a N shape, during use driving end 1 is clamped vertically downward the connecting rod of Rumpbone dilator, and the profile of the cross section of connecting rod is hexagon or tetragon, and transverse diameter is complementary with the external diameter of the connecting rod of the Rumpbone dilator of being screwed in the N shape of driving end 1.

One end of cross bar 2 is connected the upper end central authorities of driving end 1; Perpendicular with the plane of driving end 1; The other end of cross bar 2 and spanner are connected an end of 3; Cross bar 2 is perpendicular 3 with spanner, and the length of cross bar 2 can make driving end 1 be inserted into the position of connecting rod greater than the minimum range of the connecting rod outer end of corresponding two ends otch to the Rumpbone dilator of Rumpbone dilator.Rotating spanner 3 can rotating horizontal pole 2 other ends driving end 1, thereby the connecting rod of the Rumpbone dilator of screwing.

The use of this utility model:

Need be that two little otch of vertical shape are done at the center with the posterior superior iliac spine during operation, insert Rumpbone dilator, the two ends of Rumpbone dilator will be fixed; Then driving end 1 being inserted the back with cross bar 2 from incision promotes to the centre; Make driving end 1 be inserted into the position of connecting rod, block the connecting rod of Rumpbone dilator with driving end 1, rotating spanner 3 with rotating spanner head 1; Rotate the connecting rod of Rumpbone dilator, thereby Rumpbone dilator is screwed.

Other operations that this utility model also can be used for screwing at subcutaneous far-end are not limited to the Rumpbone dilator operation of screwing.

Claims

1. the spanner of a bending; It is characterized in that: it is made up of (3) driving end (1), cross bar (2), wrench, and driving end (1) is a N shape, and transverse diameter is complementary with the external diameter of clamping place of the device of being screwed in the N shape; One end of cross bar (2) is connected the upper end central authorities of driving end (1); Perpendicular with the plane of driving end (1), the other end of cross bar (2) is connected an end of (3) with spanner, and cross bar (2) is perpendicular (3) with spanner.

2. the spanner of bending according to claim 1 is characterized in that: the length of said cross bar (2) is greater than the minimum range of operative incision to the clamping place outer end of the device of being screwed.