DE112007003460B4 - Holding device for medical-optical equipment, in particular for monitor - Google Patents

Abstract

The invention relates to a holding device 100 for medical-optical equipment, in particular for a monitor 101. The holding device comprises a holding arm 102 and a support arm 103, which serves to receive the medical-optical equipment. The support arm 103 is received in a linear guide 104 formed on the support arm 102, in which the support arm 103 can be moved linearly with a load 101 received thereon relative to the support arm 102. It is a force acting on the support arm 102 and connected to the support arm 102 power transmission means 105 provided in the form of a cable which transmits a force acting on the support arm 103 force on the support arm 102 to compensate for a force acting on the support arm 103 weight at least partially, so that in the Linear guide 104 is held. An energy accumulator 106 designed as a linear spring is in operative connection with the force transmission means and introduces into the force transmission means 105 a compensating force which counteracts a weight force acting on the support arm 103. According to the invention, the cable is guided around deflecting rollers arranged at the two ends of the linear spring 106 in order to introduce force from the linear spring 106 into the cable 105.

Description

The invention relates to a holding device for medical-optical equipment, in particular for a monitor with a support arm and a support arm for receiving the medical-optical equipment, wherein the support arm is received in a provided on the support arm linear guide, in which the support arm with a recorded thereon Load relative to the support arm can be moved linearly.

A holding device of the type mentioned is from the DE 10 2005 031 557 A1 known. This holding device is designed as a portal-shaped carrier system and has a bar-shaped support arm with a linear guide, in which an arm is performed with medical-optical equipment recorded thereon.

In the WO 03/025453 A1 a ceiling stand is described as a holding device for a monitor and for operating lights for use in an operating room. This ceiling stand comprises a pillar in which a support arm is pivotally mounted with a support arm hinged thereto for receiving the monitor.

In the DE 101 42 564 A1 a holding device in the form of a surgical microscope ceiling tripod is described, which contains a weight compensation mechanism with cable. The holding device comprises a pillar on which a support arm is pivotally mounted. On the support arm, a support arm is received, which carries a load arm with surgical microscope. A load torque produced on the load arm is transmitted by means of the cable pull to a balance weight movably arranged in the region of the stand column, in order to allow a substantially force-free movement of the load arm.

The DE 198 28 710 A1 discloses a holding device for a lamp, which comprises for compensating a load torque on a lamp receiving the carrier arm designed as a spring energy storage. This energy store is accommodated in a column-shaped console of the holding device.

From the US 6,224,026 B1 There is known a device by which the arm of a doctor is assisted in performing an operation. The device has a holding arm and a support arm for receiving the human arm. The support arm is guided linearly in the support arm. On the support arm, a power transmission means is attached in the form of a cable. The other end of the cable is guided by a pulley, wherein one axis of the pulley with the support arm and the other axis of the pulley is connected to a spring. The pulley opposite end of the spring is hinged to the support arm. The pulley acts as a reduction, so that a deflection of the support arm has a reduced deflection of the spring result. As a result, the spring force changes only slightly during the deflection of the support arm. By a clamping mechanism, a biasing force of the spring is adjustable.

The object of the invention is to provide a holding device for medical-optical equipment for use in an operating room, with which the equipment can be moved by an operator almost without force in a desired, ergonomically favorable working position.

This object is achieved by a holding device of the type mentioned above with the characterizing features of claim 1, wherein a force acting on the support arm force transmission means is provided which transmits a force acting on the support arm on the support arm to compensate for a force acting on the support arm weight at least partially so that it is held in the linear guide. In this way, it is possible to move the support arm in the linear guide despite a load recorded thereon with low actuation force.

In this case, the power transmission means is connected to the support arm. In this way, a weight force acting on the support arm can be introduced directly into the holding arm.

Furthermore, the holding device comprises an energy store which is in operative connection with the force transmission means. In this way, a change in the positional energy of medical-optical equipment, which is accommodated on the holding device, be temporarily stored in the energy store. This means that no or only little energy has to be supplied from the outside for a movement of medical-optical equipment on the holding device.

The energy storage is designed as a linear spring. With a gas spring as a linear spring can be a damping receptacle for medical-optical equipment to realize the holding device. In particular, so that the medical-optical equipment can be stored vibration-free. A corresponding effect can be achieved with a mechanical spring as a linear spring, which is preferably associated with a damping element.

The energy store introduces into the force transmission means a compensating force which counteracts a weight force acting on the support arm. In this way, when relocating the medical-optical equipment on the holding device only a frictional force, but not a weight to be overcome.

The power transmission means is designed as a cable. However, it is also possible to perform this as a chain or band. In principle, the power transmission means can also be designed as a gear or rack gear. By the power transmission means is guided in the form of a cable around pulleys on a gas spring, a cable force can be introduced with translation in the gas spring. In the linear guide, the support arm is held on the one hand by the force transmitted via the force transmission means and additionally by frictional force. In this way, the support arm does not move unless an operating force is exerted by an operator in addition to him.

By providing a load-bearing unit for receiving medical-optical equipment which is connected to the support arm by means of a swivel joint, ergonomically favorable adjustments are made possible for the medical-optical equipment received on the holding device.

In a further development of the invention, the holding device comprises a fall arrester, which locks the support arm in the linear guide when a transmitted from the power transmission means to the support arm force collapses. In this way, a safe and accident-free operation of the holding device is ensured.

In a further development of the invention, the holding device includes a braking mechanism which comprises an actuating element, by means of which, upon actuation, a movement of the support arm in the linear guide with respect to a direction of movement can be cowed. In this way, the medical-optical equipment of the holding device can be locked in a desired working position.

In a further development of the invention, a spiral cable is provided in the holding device. In this way, a cable supply is created for accommodated on the holding device medical-optical equipment with a long life.

Preferably, a ceiling mounting device is provided for the holding device, to which the holding arm is pivotally received in a rotary joint. The holding device can be built as a ceiling stand. However, it is also possible in principle to carry out the holding device as a floor stand.

Advantageous embodiments of the invention are illustrated in the drawings and will be described below.

Show it:

1 A sectional view of the holding device with a monitor as medical-optical equipment in a first setting;

2 the holding device 1 in a second shot;

3 a first side view of a gas spring and a portion of a cable in the holding device;

4 a second side view of the gas spring and the portion of the cable in the holding device;

5 a diagram for the forces occurring on the holding device;

6 a fall arrester for the holding device;

7

8th and

9 Partial views of the holding device for explaining a brake mechanism; such as

10 a spiral cable for the holding device to provide power to a monitor that has been picked up.

The 1 and 2 show a trained as a ceiling stand holding device 100 in different settings. The holding device 100 includes a support arm 102 and a support arm 103 , The holding arm 102 is rotatable on a tripod column 110 hinged. This is on the ceiling 111 a not shown operating room mounted. The holding arm 102 can be around an axis 112 the tripod column 110 be panned. The support arm 103 is in one with the support arm 102 firmly connected linear guide 104 added. He is designed columnar. In the linear guide 104 are plain bearings 121 . 122 . 123 and 124 educated. These plain bearings ensure a low-friction and play-free guidance of the support arm 103 in the linear guide 104 , The support arm 103 carries on a lower section 130 a load-bearing unit 131 with a monitor 101 as a medical-optical equipment. The load suspension unit 131 can be in a swivel 107 around an axis 132 relative to the support arm 103 according to the double arrow 133 to be moved. In the load-bearing unit 131 is it possible, the monitor 101 according to the double arrow 150 around an axis 151 to pan.

In 1 is the holding device 100 shown in a setting in which the support arm 103 up to a stop 155 retracted into the linear guide. 2 shows the holding device 100 in a setting where the support arm 103 according to the path a from the linear guide 104 moved out. To the in 2 The setting shown can be the support arm 103 the holding device according to the double arrow 160 to be moved.

For moving the support arm 103 in the linear guide 104 is at the load suspension unit 103 a grip element 156 intended. About this grip element 156 can the support arm 103 pulled out by an operator from the linear guide and in the linear guide 104 be pushed into it.

The holding device 100 contains a cable 105 , An end 181 of the cable 105 is with the support arm 103 connected. Starting from the support arm 103 is the cable 105 but one in the arm 102 mounted deflection pulley 182 guided. The cable 105 is with an end 183 in a cable attachment section 184 in the holding arm 102 established.

The cable 105 stands with a gas spring 106 in operative connection in that upon insertion of the support arm 103 in the linear guide 104 the gas spring 106 Inversely, when the support arm is relaxed 103 from the linear guide 104 is pulled out, the gas spring 106 curious; excited. This is the gas spring 106 in a holding arm 102 arranged guide unit 190 stored linearly movable.

The 3 shows a side view of the gas cylinder with cable and pulleys. 4 is a view of the gas cylinder with cable and pulleys according to the reference numeral IV-IV in 1 indicated direction. As far as in 1 . 2 and 3 and 4 identical components can be seen, identical reference numerals are used. At both ends of the gas spring 106 You will find four pulleys 401 . 402 . 403 . 404 . 406 . 407 . 408 . 409 , The pulleys 401 . 402 . 403 . 404 are on an axis 405 rotatably mounted. Accordingly, the pulleys 406 . 407 . 408 and 409 on an axis 410 added. Between the axes 405 and 410 is the gas spring 106 clamped. The axes 405 and 410 are thus acted upon by a spring force F _Z.

The on the support arm 103 , the load-carrying unit 131 and the monitor 101 out 1 respectively. 2 attacking weight force causes the support arm 103 in the linear guide 104 is acted upon by a force component F _G , which endeavors to the support arm 103 in the direction of the cable 105 from the linear guide 104 to move. The force component F _G at reference numerals 195 acts on the one hand by the gas spring 106 in the cable 105 as a force transmission means introduced spring force F _Z according to the arrow 196 on the other hand, the friction force F _R according to the arrow 197 , especially those in plain bearings 121 . 122 . 123 and 124 of the support arm 103 occurring in the linear guide friction force.

The weight of the support arm 103 with load suspension unit 131 and monitor 101 is through the of the plain bearings 121 . 122 . 123 and 124 caused frictional force F _R and the means of the cable 105 as a power transmission means on the support arm 103 transferred spring force F _Z compensated.

About this pulleys the cable is in the way 8-fold to the gas spring 106 placed that the length L of the gas spring 106 which these at the in 1 having shown adjustment of the holding device, shortened by the 8-th part of the route, which is the support arm 103 from the linear guide 104 to the in 2 shown setting the holding device 100 is moved out. At the same time, the pulleys cause a translation mechanism, ie translated the cable force for 8-fold translated into the gas cylinder or 8-times reduced from the gas pressure cylinder transferred to the cable.

5 explains the on the holding device 100 occurring forces for different positions a of the support arm 103 in relation to the linear guide 104 , The characteristic 501 the in 1 . 2 . 3 and 4 shown gas spring 106 is chosen so that when setting the support arm 103 in the linear guide 104 between the end section 155 and a maximum possible extension length a _max from the linear guide, the increase in the force transmitted from the gas spring to the support arm force not greater than the friction force occurring in the arrangement at a certain setting 502 , When the holding arm 103 in the linear guide 104 at the end section 155 is, is the component of the weight F _G of the arm 103 , Load-bearing unit 131 and monitor 101 essentially offset by the spring force F _Z.

This characteristic curve ensures that a person for movement of recorded on the support arm medical-optical equipment in the form of the monitor only frictional forces of the linear guide 104 but not the weight of the support arm, load-bearing unit and medical-optical equipment, ie monitor must overcome:
The of the cable 105 on the support arm 103 applied balancing force is by cooperating with the frictional force of the arrangement of the position of the holding arm 103 in the linear guide 104 independently. For a movement of the support arm 103 in the sliding guide 104 must be essentially from an operator who has a force in the direction of the arrows 171 . 172 on the handle element 156 on the support arm 103 exerts only the frictional force of the plain bearings 121 . 122 . 123 and 124 overcome in the linear guide.

In case of damage to the gas spring 106 or the cable 105 out 1 To avoid getting the arm 103 uncontrolled from the linear guide 104 is moved out, is in the fixture 100 a fall arrester provided. The structure of fall protection is based on 6 explained.

6 shows a section 600 the holding device 1 , The fall protection 601 contains a tension spring 602 , This tension spring 602 stands over a grub screw 604 with a rotatably mounted eccentric 603 in active connection. This eccentric 603 is on a plate 605 with a screw 606 connected, in which the cable pull 105 is hooked to the arm 103 in the linear guide 104 to keep. In the event that the cable pull 105 transmitted force collapses, about because the cable 105 tears, the tension spring 602 in the direction of the arrow 607 relieved. This causes a release of the threaded pin 604 in the eccentric 603 , Due to the weight of the arm is 103 anxious to move down. Moves the arm 103 When the tension spring is relieved downwards, a rotary movement of the eccentric occurs 603 in the direction of the arrow 608 , This nestles then on the inside of the linear guide 104 at. This locks the eccentric 603 a falling movement of the support arm 103 in the linear guide 104 ,

The holding device 100 out 1 also includes a brake mechanism, by means of which a movement of the support arm 103 in the direction of the weight with force component F _{G is} locked. For this purpose is in the holding arm 102 pointing section 700 of the support arm 103 a ball cage 701 provided with plastic balls, the 7 shows. The ball cage 701 holds these plastic balls between the linear guide 104 and the outer wall of the support arm 103 , which is formed in this section with a cone shape. The ball cage is by spring force of a force in the direction of the arrow 702 exposed.

About the cone-shaped surface 702 on the support arm 103 is the force generated by spring with an arrow 703 corresponding direction in a spreading force 704 converted, which is an axial displacement of the support arm 103 in the linear guide 104 in derogation.

8th and 9 show different cuts with the section of the support arm 103 the holding device 1 in which the handle element 156 is trained. This section contains compression springs 801 and 802 that rely on a power transmission means 803 act in the form of a tension sleeve. This power transmission means 803 stands with the ball cage 701 in operative connection and transmits the spring force of the compression springs 801 and 802 on the ball cage 701 ,

By pressing the handle element 156 can the power transmission means 803 in the direction of the arrow 804 to be moved. This has a corresponding displacement of the ball cage 701 out 7 down into a region of the support arm in the sequence in which the outer surface is no longer cone-shaped. Then, the balls no more spreading force on the inner wall of the linear guide 104 transfer. The brake mechanism is opened and the balls then act as plain bearings or ball bearings.

The 10 shows a spiral cable 1000 to power the monitor 101 the holding device 100 out 1 with electrical energy. The spiral cable 1000 has spiral sections 1001 and 1002 , in which in the cable a spiral spring is incorporated. In these sections, the spiral cable can be stretched and bent. The section 1001 of the spiral cable 1000 is in the holding arm 102 the holding device 1 relocated, the section 1002 accordingly in the support arm 103 the holding device. On the spiral cable 1000 are attachment points 1004 and 1005 educated. About the attachment point 1004 is the spiral cable 1000 with the holding arm 102 the holding device 100 out 1 connected. With the attachment point 105 it is the arm 103 the holding device connected.

The holding device described can not be connected to a ceiling stand, such as a surgical microscope but can also be used with a floor stand. In particular, the holding device itself may be formed as a floor or ceiling stand.

Claims (10)

Holding device ( 100 ) for medical-optical equipment, in particular for a monitor ( 101 ) - with a holding arm ( 102 ); and - with a support arm ( 103 ) for receiving the medical-optical equipment ( 101 ); the support arm ( 103 ) in a holding arm ( 102 ) provided linear guide ( 104 ) is received, in which the support arm ( 103 ) with a load picked up on it ( 101 ) relative to the support arm ( 102 ) can be moved linearly, and - with one on the holding arm ( 102 ) and with the holding arm ( 102 ) connected power transmission means ( 105 ), one on the support arm ( 103 ) acting force on the holding arm ( 102 ) transmits one to the support arm ( 103 ) counteracting weight force at least partially, so that this in the linear guide ( 104 ) is held, and - formed with a trained as a linear spring energy storage ( 106 ), which is in operative connection with the power transmission means and in the power transmission means ( 105 ) introduces a balancing force, the one on the support arm ( 103 ) counteracts acting weight force, - wherein the force transmission means ( 105 ) is designed as a cable, characterized in that the cable ( 105 ) at the two ends of the linear spring ( 106 ) arranged deflection rollers is guided to from the linear spring ( 106 ) in the cable ( 105 ) To initiate force. Holding device according to claim 1, characterized in that the energy store as a gas spring ( 106 ) is trained. Holding device according to one of claims 1 or 2, characterized in that the support arm ( 103 ) with the load applied thereto with frictional force and by the force transfer means ( 105 ) transmitted force in the linear guide ( 104 ) is held. Holding device according to one of claims 1 to 3, characterized in that a load-receiving unit ( 131 ) is intended for the reception of medical-optical equipment, which by means of swivel ( 107 ) on the support arm ( 103 ) connected. Holding device according to one of claims 1 to 4, characterized in that a fall arrester ( 601 ) is provided, which the support arm ( 103 ) in the linear guide ( 104 ) locked when one of the power transmission means ( 105 ) on the holding arm ( 102 ) transmitted force collapses. Holding device according to one of claims 1 to 5, characterized in that a braking mechanism is provided which an actuating element ( 156 ), wherein the brake mechanism when actuated movement of the support arm ( 103 ) in the linear guide ( 104 ) locks with respect to a direction of movement. Holding device according to one of claims 1 to 6, characterized in that for the supply of recorded on the holding device medical-optical equipment ( 105 ) a laid in the holding device spiral cable ( 1000 ) is provided. Holding device according to one of claims 1 to 7, characterized in that a ceiling mounting device is provided, on which the holding arm ( 102 ) in a hinge about a rotation axis ( 112 ) is received pivotally. Ceiling stand for medical-optical equipment with a holding device according to one of claims 1 to 7. Floor stand for medical optical equipment with a holding device according to one of claims 1 to 7.

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