CN201275128Y

CN201275128Y - Bone traction device

Info

Publication number: CN201275128Y
Application number: CNU2008201865390U
Authority: CN
Inventors: 刘锦波
Original assignee: Individual
Current assignee: First Peoples Hospital of Changzhou
Priority date: 2008-10-24
Filing date: 2008-10-24
Publication date: 2009-07-22
Anticipated expiration: 2018-10-24

Abstract

The utility model discloses a bone retractor which comprises a left retractor arm with a left shaft sleeve, and a right retractor arm with a right shaft sleeve, and a retractor rod with an ear hold. The utility model is characterized in that through holes with at least two fringes are formed on the retractor rod in the axial direction thereof; screw holes screwed with holding screws are formed on both sides of the retractor rod; blind holes which are matched and in movable fit with the steinman nails are formed in the axial direction of the inner sides of the left shaft sleeve and the right shaft sleeve respectively; a left bend rod and a right bend rod which bend toward the inner side are arranged at the other ends of the left retractor arm and the right retractor arm respectively; a section of left prism and a section of right prism which are matched with the though holes formed on the extractor rod are arranged on a left bend rod and a right bend rod respectively; the central axes of the left prism and the right shaft sleeve are parallel with each other; the central axes of the right prism and the right shaft sleeve are parallel with each other; the centre distance between the left prism and the left shaft sleeve is equal to the centre position of the right prism and the right shaft sleeve; and the holding screws can hold the prisms. The utility model has the advantages that a patient can not feel any pains and the clinical operation time is short.

Description

Bone tractor

Technical field

This utility model relates to a kind of bone tractor, belongs to technical field of medical instruments.

Background technology

Bone tractor is after being used for clinical reduction of the fracture operation, by traction avoid fracturing a kind of medical apparatus and instruments of docking point dislocation.

Existing bone tractor such as Chinese patent Granted publication CN2191643y, CN2719245y, CN2439263y, CN2531753y, CN88211070U, CN2917588y and CN2152514y etc., has provided the different technical scheme of structure in succession.Take a broad view of the deficiency that there is the following aspects in prior art: the one, owing to be located in the interior steinman pin of skeleton, can rotate or play with described traction apparatus displacement, exposed steinman pin two ends can scratch the soft tissue at other position, and bring misery to the patient; The 2nd, because left and right draft arm is integral structure, when clinical manipulation, its left and right draft arm is to pull open to both sides by its elasticity, is sleeved on the steinman pin two ends again, and makes troubles to clinical manipulation.This shows the unreasonable structure of prior art.

Summary of the invention

This utility model aims to provide a kind of rational in infrastructure, and clinical manipulation is convenient, can reduce patient suffering's bone tractor, to overcome the deficiency of prior art.

This utility model realizes that the technical though of its purpose is, steinman pin and left and right draft arm that order is located in the skeleton are movingly mutually, and the two ends of steinman pin are not exposed outside, because steinman pin rotates or play, bring slight illness to the patient to overcome; Left and right draft arm by existing integral type arching, is changed into the march-past structure, to make things convenient for clinical manipulation.Thereby, realize the purpose of this utility model by the improvement of said structure.

In view of above-mentioned conception, this utility model realizes that the technical scheme of its purpose is:

A kind of bone tractor comprises that an end is provided with the left draft arm of left axle sleeve and the right draft arm that an end is provided with right axle sleeve; Left axle sleeve is fixedlyed connected with right draft arm is perpendicular with left draft arm respectively with right axle sleeve; Its innovative point is, a, also comprises draw bar; Be positioned at the middle part of draw bar, be fixedly connected with and be used for the ear of snapping pull rope and climb; Draw bar is axially arranged with the through hole that has 2 ribs at least along it; Be positioned at the left and right sides of draw bar, be respectively equipped with screw; Screw is twisted mutually with holding screw and is closed; The medial surface of the right axle sleeve that left axle sleeve that b, described left draft arm are set and right draft arm are set is axially arranged with along it respectively and is used for equipped mutually with the steinman pin two ends and is movingly blind hole mutually.C, be positioned at left draft arm and right draft arm the other end with respect to its left axle sleeve and right axle sleeve, be respectively equipped with the left and right knee of bending to the inside, the right knee that left knee that described left draft arm is set and right draft arm are set, have respectively one section can be equipped mutually with the set described through hole of draw bar left and right prismatic section; The prismatic section in a described left side parallels with the central axis of left axle sleeve, and described right prismatic section parallels with the central axis of right axle sleeve; And the centre distance of the prismatic section in a left side and left axle sleeve equals the right prismatic section centre distance with right axle sleeve; Holding screw can be made the described prismatic section in tightening position.

Can understand that by above given technical scheme this utility model has been owing to taked the blind hole of steinman pin axle sleeve left and right with it to be movable fit structure and left and right draft arm row structure mutually, thereby realize its purpose that will realize.

Further innovative point of the present utility model is;

The set through hole of described draw bar is square tube hole, four rib sides, and the prismatic section of the knee of the prismatic section of the knee of described left draft arm and right draft arm all is and the set four rib square through holes of draw bar to be the square shell of column of four ribs that is slidingly matched mutually.But be not limited to this.In fact so long as can make draw bar and left and right draft arm can not produce the structure of mutual rotation, all be suitable.For example single clipping edge circular hole and single clipping edge cylinder matching pair, i.e. two rib circular holes and two prismatic matching pairs.Or the spline fitted pair or the like.

Fixedlying connected that described draw bar and ear are climbed is to be welded to connect; Described left axle sleeve is fixedlyed connected with left draft arm, with fixedlying connected of right axle sleeve and right draft arm, is and is welded to connect.This is that this utility model institute is preferred, but is not limited to this.For example adopt removable screw to connect or the like.

Described holding screw is the holding screw with turn-knob.Being described holding screw, is the holding screw that has auricle at its screw head, the butterfly screw that promptly is commonly called as.Its purpose obviously is convenient clinical manipulation.

Technique scheme is implemented, and what this utility model had is rational in infrastructure, and clinical manipulation is convenient, can obviously alleviate characteristics such as patient's slight illness, is conspicuous.

Description of drawings

Fig. 1 is the structural representation of a kind of specific embodiment of this utility model;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the A-A cutaway view of Fig. 1;

Fig. 4 is the B-B profile of Fig. 1;

Fig. 5 is that draw bar 3 is climbed 4 assembled state figure with ear as shown in Figure 1;

Fig. 6 is the side view of Fig. 5;

Fig. 7 is the C-C cutaway view of Fig. 6;

Fig. 8 is the structure chart as left draft arm 1 shown in Figure 1 and right draft arm 2;

Fig. 9 is the left view of Fig. 8.

The specific embodiment

Below contrast accompanying drawing, by the description of the specific embodiment, the utility model is described in further detail.

The preferred a kind of specific embodiment of this utility model is shown in accompanying drawing 1～9.

A kind of bone tractor comprises that an end is provided with the left draft arm 1 of left axle sleeve 1-1 and the right draft arm 2 that an end is provided with right axle sleeve 2-1; Left axle sleeve 1-1 and right axle sleeve 2-1 respectively with left draft arm 1 and right draft arm 2 perpendicular fixedlying connected; A, also comprise draw bar 3; Be positioned at the middle part of draw bar 3, be fixedly connected with and be used for the ear of snapping pull rope and climb 4; Draw bar 3 is axially arranged with the through hole 3-1 that has 2 ribs at least along it; Be positioned at the and arranged on left and right sides of draw bar 3, be respectively equipped with screw 3-2; Screw 3-2 twists mutually with holding screw 5 and closes; The medial surface of the right axle sleeve 2-1 that the left axle sleeve 1-1 that described left draft arm 1 is set and right draft arm 2 are set, respectively along its be axially arranged be used for equipped and be movingly blind hole 1-1-1,2-1-1 mutually with steinman pin 6 two ends; Be positioned at left draft arm 1 and right draft arm 2 the other end with respect to its left axle sleeve 1-1 and right axle sleeve 2-1, establish left and right knee 1-2, the 2-2 of bending to the inside respectively, the knee 2-2 that the knee 1-2 that described left draft arm 1 is set and right draft arm 2 are set, have respectively one section can with the set through hole 3-1 that has 2 ribs at least of draw bar 3, equipped mutually left and right prismatic section 1-2-1,2-2-1; A described left side prismatic section 1-2-1 parallels with the central axis of left axle sleeve 1-1, and described right prismatic section 2-2-1 parallels with the central axis of right axle sleeve 2-1; And the centre distance of a left side prismatic section 1-2-1 and left axle sleeve 1-1 equals the centre distance of right rib section 2-2-1 and right axle sleeve 2-1; And holding screw 5 can be made tightening position described prismatic section 1-2-1,2-2-1.Described draw bar 3 set through hole 3-1 are four rib square through holes, and the prismatic section 2-2-1 of the knee 2-2 of the prismatic section 1-2-1 of the knee 1-2 of described left draft arm and right draft arm 2, all be and draw bar 3 set four rib square through hole 3-1, be the square shell of column of four ribs that is slidingly matched mutually.Described draw bar 3 and ear climb 4 to fixedly connected be to be welded to connect; Described left axle sleeve 1-1 is fixedlyed connected with left draft arm 1, with fixedlying connected of right axle sleeve 2-1 and right draft arm 2, is and is welded to connect.Described holding screw 5 is to have the holding screw that revolves 5-1 surely.

The concise and to the point description of this utility model clinical practice is:

Please understand accompanying drawing 1, its clinical practice is carried out according to following steps successively.

After finishing fracture butt joint and resetting, on the far-end skeleton of fracture, wear steinman pin 6 earlier, and make its two ends equal length exposed outside; With set axle sleeve 1-1, the 2-1 of left and

right draft arm

1,2 one ends, be sleeved on the two ends of steinman pin 6 by its blind hole 1-1-1,2-1-1 again; Then that left and

right draft arm

1,2 other ends are set prismatic section 1-1-2-1,2-1-2-1 insert respectively in the set through hole 3-1 of draw bar (3) from the two ends of draw bar (3); Reuse holding screw 5 system tightening positions, thereby make draw bar (3) and left and

right draft arm

1,2 johning knot integrators, climb snapping pull rope in 4 at the set ear of draw bar (3) at last, and make for example extension table bedstead snapping of the other end of pull rope and fixed object, promptly having finished the operation of fracture butt joint reduction by traction.When removing this utility model, as long as holding screw 5 is unclamped, left and

right draft arm

1,2 is unclamped to both sides respectively, promptly finish dismantling operation of the present utility model.

The trial effect of this utility model first sample is extraordinary.The patient does not have pain substantially, and clinical manipulation time ratio prior art obviously shortens.

Claims

1, a kind of bone tractor comprises that an end is provided with the left draft arm (1) of left axle sleeve (1-1) and the right draft arm (2) that an end is provided with right axle sleeve (2-1); Left axle sleeve (1-1) and right axle sleeve (2-1) respectively with left draft arm (1) and perpendicular the fixedlying connected of right draft arm (2); It is characterized in that,

A, also comprise draw bar (3); Be positioned at the middle part of draw bar (3), be fixedly connected with and be used for the ear of snapping pull rope and climb (4); Draw bar (3) is axially arranged with the through hole (3-1) that has 2 ribs at least along it; Be positioned at the left and right sides of draw bar (3), be respectively equipped with screw (3-2); Screw (3-2) is twisted mutually with holding screw (5) and is closed;

The medial surface of the right axle sleeve (2-1) that left axle sleeve (1-1) that b, described left draft arm (1) are set and right draft arm (2) are set is axially arranged with along it respectively and is used for equipped mutually with steinman pin (6) two ends and is movingly blind hole (1-1-1,2-1-1) mutually;

C, be positioned at left draft arm (1) and right draft arm (2) the other end with respect to its left axle sleeve (1-1) and right axle sleeve (2-1), the left and right knee (1-2,2-2) that bending is to the inside arranged respectively, the right knee (2-2) that left knee (1-2) that described left draft arm (1) is set and right draft arm (2) are set, have respectively one section can with the set described through hole (3-1) of draw bar (3), equipped mutually left and right prismatic section (1-2-1,2-2-1); The described prismatic section in a left side (1-2-1) parallels with both central axis of left axle sleeve (1-1); Both central axis of described right prismatic section (2-2-1) and right axle sleeve (2-1) parallels; And the centre distance of the prismatic section in a left side (1-2-1) and left axle sleeve (1-1) equals the centre distance of right prismatic section (2-2-1) and right axle sleeve (2-1); Holding screw (5) can be made the described prismatic section in tightening position (1-2-1,2-2-1).

2, bone tractor according to claim 1, it is characterized in that, the set through hole (3-1) of described draw bar (3) is four rib square through holes, and the prismatic section (2-2-1) of the knee (2-2) of the prismatic section (1-2-1) of the knee (1-2) of described left draft arm (1) and right draft arm (2), all be and the set four rib square through holes (3-1) of draw bar (3), be the square shell of column of four ribs that is slidingly matched mutually.

3, bone tractor according to claim 1 is characterized in that, described draw bar (3) is climbed fixedlying connected of (4) with ear be to be welded to connect; Described left axle sleeve (1-1) is fixedlyed connected with left draft arm (1).With fixedlying connected of right axle sleeve (2-1) and right draft arm (2), be and be welded to connect.

4, bone tractor according to claim 1 is characterized in that, described holding screw (5) is the holding screw with turn-knob (5-1).