CN201064457Y

CN201064457Y - Universal elastic clamping head

Info

Publication number: CN201064457Y
Application number: CNU2007200053428U
Authority: CN
Inventors: 张令怡
Original assignee: 张令怡
Current assignee: Beijing Hangtian Kadi Technology R & D Institute
Priority date: 2007-02-28
Filing date: 2007-02-28
Publication date: 2008-05-28
Anticipated expiration: 2017-02-28

Abstract

The utility model relates to a universal elastic chuck. A supporting arm with a heart immobilization is connected with pressure feet universally and elastically. The utility model is composed of a claw sleeve of the supporting arm, a ball handle of pressure feet, an elastic tri-claw and a block shaft. The utility model is characterized in that the elastic tri-claw comprises a head, a conical neck, a straight segment and a hole bottom; the intra-cavity of the elastic tri-claw is provided with a shrink mouth, a ball-surfaced cavity and a cylindrical surface cavity; the elastic tri-claw is longitudinally divided into three valves by three commissures; and the hole bottoms are connected with each other. The elastic tri-claw, the ball handle, the block shaft and the claw sleeve are assembled, and then the ball of the ball handle can be elastically embedded into the ball-surfaced cavity of the elastic tri-claw from the shrink mouth, and the sizes of the ball surfaces of the ball and the ball-surfaced cavity. When the block shaft is loosened, the ball and the elastic tri-claw can freely rotate, and the ball handle can move in multiway and can choose directions along the commissures of the elastic tri-claw. When the block shaft is tightened, a dop drives the elastic tri-claw to shift, and then the conical neck is strung by the claw sleeve, the ball-surfaced cavity enclasps the ball, and the elastic tri-claw and the ball are embedded and clipped, frictionally stopped and positioned. When the elastic tri-claw is pulled out of the claw sleeve, the ball handle can be assembled and dissembled. The utility model has the advantages of simple structure, easy processing, small size, flexible actions, stable positioning and convenient assembling and dissembling.

Description

Universal collet

Technical field

This utility model belongs to a kind of mechanical connecting device, is specifically related to universal collet, is used for the presser feet of cardiac stabilizer and turning of support arm, can locate, removably connect, and also can promote the connection of other devices or instrument.

Background technology

It is the indispensable operating theater instruments of heart beating coronary artery bypass grafting (beating heart coronary bypass) that cardiac stabilizer is made of presser feet, support arm, bearing.Bearing is fixed on the sternal retractor in the operation, support arm drives presser feet can do three-dimensional activity, location in the scope of thoracic cavity, making presser feet can stride arteria coronaria inhales, is pressed on the heart surface, stablize the heart part, limit the arteria coronaria position, appear target arteria coronaria anastomotic stoma, create the convenient-to-running condition of coronary artery bypass grafting anastomosis of blood vessel.Owing to be distributed in the various arteria coronaria blood vessels at each position of heart surface narrow sexually transmitted disease (STD) change may take place all, require the presser feet of cardiac stabilizer can reach each pathological changes arteria coronaria position, and can smoothly, conveniently extend across arteria coronaria and inhale, be pressed on the heart surface.Therefore remove and require two presser feet leaf plastically deformables, turn, the scalable span, also require presser feet and support arm junction can do universal activity, orientation and location, to make things convenient for presser feet can enter narrow space, improve the adaptability of operation, the quality of coincideing and efficient.

The presser feet of conventional art cardiac regulator and support arm be connected or only adjustable pitch angle degree maybe can swing, even adjustable break-in and adopt rigid top compression set position, its chuck structure complexity, occupy-place is bigger, processing difficulties, reliability are not good.

Summary of the invention

The purpose of this utility model be being connected of design a kind of cardiac stabilizer presser feet and support arm can multidirectional activity, orientation and localized universal collet, it is simple in structure, volume is little, flexible movements, the location is firm, processing easily, good reliability.

The technical scheme that this utility model technical solution problem is adopted is: a kind of universal collet is by elastic claw, the ball handle, axis, the pawl cover constitutes, it is characterized in that: the elastic claw gabarit is divided head, the awl neck, at the bottom of straight section and the hole, its inner chamber is provided with reducing, the sphere chamber, the cylinder chamber, vertically be provided with sealing with head, the awl neck, straight section is divided into (2-4) rubber-like pawl, link to each other at the bottom of the hole, axis (flexible axle or hard axle) passes at the bottom of the elastic claw hole, dop places the cylinder intracavity, the spheroid of ball handle is pressed into the sphere intracavity by the strain of the reducing of elastic claw, two sphere sizes coupling, the ball handle, axis, the elastic claw assembly places in the pawl cover at the bottom of passing the pawl trepanning again, the elastic claw straight section is removable and rotation in the pawl cover, it is limited that the awl neck enters running-on, the space is left in two bottoms, when axis is in when loosening state, elastic claw is in the pawl cover, spheroid is free to rotate at elastic claw sphere intracavity, the ball handle can be done multidirectional swing along the elastic claw sealing, orientation, when the tension axis, dop drives elastic claw and the pawl cover relatively moves, running-on tightens up elastic claw awl neck, spheroid is held in the sphere chamber tightly, assembly, the ball handle is subjected to inlay card, friction stop, pull out from the pawl cover when assembly, the ball handle is mounted and removable.

This utility model has following beneficial effect

1. simple in structure, random orientation, flexible movements, the location is reliable.

2. simple in structure, volume is little, and occupy-place is little.

3. parts are few, and it is not high that elasticity connects required precision, easily processing.

4. elasticity loading and unloading, easy to use.

Description of drawings

Fig. 1 is the vertical cross-sectional schematic of the universal collet of this utility model.

Fig. 2 is an elastic claw schematic top plan view among Fig. 1.

Fig. 3 is Fig. 2 A-A profile.

The specific embodiment

As Fig. 1, Fig. 2, Fig. 3, shown in a kind of universal collet contain flexible three-jaw 1, axis 2, ball handle 3 and pawl cover 4 (axis, pawl cover figure are slightly).The elasticity three-jaw has three pawls 101, and with three sealings, 102 grades wide at the top and narrow at the bottom separately, the bottom 103 links to each other at the bottom of with circular port.The outer division header of three pawls 101 portion 104, awl neck 105 forms reducing 107, sphere chamber 108, cylinder chamber 109 in the straight section 106, pawl.The axle 201 (flexible axle or hard axle) of axis 2 is by at the bottom of the elasticity three-jaw hole 103, and dop 202 is put in the elasticity three-jaw cylinder chambeies 109 and left three-jaw constringency cleft 5.The bulb 301 of ball handle 3 can be pressed in the sphere chamber 108 from reducing 107 by the three-jaw strain, and handle 302 exposes from elasticity three-jaw head 104, can be along three the wide sealing swing in sealing 102 tops tunings.The assembly of placing the elasticity three-jaw 1 of axis 2 and ball handle 3 is inserted in the pawl cover 4, axis 201 passes pawl cover bottom outlet 401 elasticity three-jaw straight sections 106 and slips into pawl cover inner chamber 402, the running-on 403 that awl neck 105 arrives the pawl cover is obstructed, and space 6 is left in elasticity three-jaw bottom 103 and pawl cover bottom 401.When making elasticity three-jaw and pawl cover, stressed pulling axis relatively moves, running-on 403 can tighten up awl neck 105, and to make three-jaw sphere chamber 108 hold bulb 301 location tightly motionless, on the contrary when loosening axis, elasticity three-jaw awl neck is unfettered, the elasticity three-jaw can 360 ° of rotations, the ball handle also can freely swing, and ball junctional complex that handle drives is done multidirectional activity thereupon.

Universal collet is used for cardiac stabilizer, and the ball handle connects presser feet, and the pawl cover connects support arm, and presser feet is connected with support arm can do universal activity, orientation, location, and mounted and removable.

Claims

1. a universal collet is by elastic claw, the ball handle, axis, the pawl cover constitutes, it is characterized in that: the elastic claw gabarit is divided head, the awl neck, at the bottom of straight section and the hole, its inner chamber is provided with reducing, the sphere chamber, the cylinder chamber, vertically be provided with sealing with head, the awl neck, straight section is divided into the rubber-like pawl, link to each other at the bottom of the hole, axis passes at the bottom of the elastic claw hole, dop places the cylinder intracavity, the spheroid of ball handle is pressed into the sphere intracavity by the strain of the reducing of elastic claw, two sphere sizes coupling, the ball handle, axis, the elastic claw assembly places in the pawl cover at the bottom of passing the pawl trepanning again, the elastic claw straight section is removable and rotation in the pawl cover, it is limited that the awl neck enters running-on, the space is left in two bottoms, when axis is in when loosening state, elastic claw is in the pawl cover, spheroid is free to rotate at elastic claw sphere intracavity, the ball handle can be done multidirectional swing along the elastic claw sealing, orientation, when the tension axis, dop drives elastic claw and the pawl cover relatively moves, running-on tightens up elastic claw awl neck, and spheroid is held in the sphere chamber tightly, assembly, the ball handle is subjected to inlay card, friction stop, pull out from the pawl cover when assembly, the ball handle is mounted and removable.

2. according to the described universal collet of claim 1, it is characterized in that: elastic claw can be established two, three, four sealings, has two lobes, three lobes, pintongs elastic claw.

3. according to the described universal collet of claim 1, it is characterized in that: the axle of axis can be flexible axle or hard axle.