Quick attach/release pole clamp

• US 5,169,106 A
• Filed: 04/29/1991
• Issued: 12/08/1992
• Est. Priority Date: 04/29/1991
• Status: Expired due to Term

• Current Assignee: B Braun Medical Incorporated (B. Braun Holding GmbH & Co. KG)
• Original Assignee: McGaw, Inc. (B. Braun Holding GmbH & Co. KG)
• Inventors: Rasmussen, Edward G.
• Primary Examiner(s): Friedman, Carl D.
• Assistant Examiner(s): BERGER, DEREK JOEL
• Application Number:
  US07/693,924
• Time in Patent Office: 589 Days
• Field of Search: 248/230, 248/231.3, 248/231.4, 248/316.2, 248/316.3, 248/316.4, 248/218.4, 403/374, 403/409.1, 403/110
• US Class Current: 248/230.3
• CPC Class Codes: A47B 57/26 consisting of clamping means, e.g. with sliding bolts or sliding wedges fixed on cords or the like A47B43/006
• CPC Class Codes: A47B 67/00 Chests; Dressing-tables; Medicine cabinets or the like; Cabinets characterised by the arrangement of drawers
• CPC Class Codes: A61G 12/00 Accommodation for nursing, e.g. in hospitals, not covered by groups A61G1/00 - A61G11/00, e.g. trolleys for transport of medicaments or food service or tea-tables, trolleys or wagons A47B31/00; Prescription lists
• CPC Class Codes: A61M 5/1415 Stands, brackets or the like for supporting infusion accessories
• CPC Class Codes: F16M 11/16 Details concerning attachment of head-supporting legs, with or without actuation of locking members thereof
• CPC Class Codes: F16M 11/24 changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each otherF16M11/42 takes precedence
• CPC Class Codes: F16M 13/022 repositionable
• CPC Class Codes: F16M 2200/022 by friction
• CPC Class Codes: F16M 2200/027 by friction

Abstract

A quick attach/release pole clamp is mounted on the side of a medical instrument case. A stationary clamp member is secured to the case and a movable clamp member slides in a slot oriented at a slight acute angle to the vertical, so that it moves toward and away from the stationary clamp member as it moves up and down the slot. A spring biases the movable clamp member toward the top of the slot so that the clamp is moved to the closed position. The user may support the instrument case in two hands while depressing the sliding clamp member to permit the clamp members to be positioned around a pole. When the pressure is released, the spring causes the clamp to close on the pole. A camming lever permits the user to provide positive latching of the clamp member from movement, and to engage an anti-rotation element with the pole. An interlock prohibits activation of the camming lever while the movable clamp member is being depressed.

Claims

1. A medical instrument mountable on a vertical pole comprising:

(a) a case adapted to being held by two hands;

(b) a first clamping member carried by the case;

(c) a second clamping member confronting the first clamping member;

(d) biasing means urging the first and second clamping members together to permit gripping of a pole therebetween;

(e) an actuator adapted to being pressed by a single digit of a hand holding the case to overcome the biasing means and cause relative movement of the first and second clamping members apart to permit their placement about a pole, whereby the instrument may be mounted on a pole by carrying it to the pole with the actuator depressed by the carrier'"'"'s digit to permit placement of the clamping members around the pole, and by then releasing the actuator to permit the biasing means to cause engagement of the clamping members with the pole;

(f) a movable slide carrying the second clamping member in a slot guiding the slide at an acute angle to the vertical; and

(g) a latch actuable to positively prevent movement of the slide.

2. The device of claim 1, further comprising an interlock means for preventing actuation of the latch at times when the actuator is being pressed by the user.

3. The device of claim 2, further comprising an anti-rotation element which is movable to engage the pole after release of the actuator to secure the instrument from rotation on the pole.

4. A pole clamp for an instrument case comprising:

(a) a first clamping member fixedly mounted to the case;

(b) a movable slide carrying a second clamping member confronting the first clamping member;

(c) biasing means urging the first and second clamping members together to permit gripping of a pole therebetween;

(d) a track guiding the slide at an acute angle to the vertical;

(e) a toothed rail parallel to the track; and

(f) an actuator adapted to being pressed to overcome the biasing means and cause relative movement of the first and second clamping members apart to permit their placement about a pole, and carrying a latch for optionally engaging the toothed rail to prevent movement of the slide, whereby the instrument case may be mounted on a pole by carrying it to the pole with the actuator engaged to permit placement of the clamping members around the pole, and then by releasing the actuator to permit the biasing means to cause engagement of the clamping members with the pole.

5. The device of claim 4, further comprising an interlock means for preventing engagement of the latch at times when the actuator is being pressed by the user.

6. The device of claim 5, further comprising an anti-rotation slide associated with the second clamping member which is movable to engage the pole after release of the actuator to secure the instrument from rotation on the pole.

7. The device of claim 6, wherein actuation of the latch and the anti-rotation slide are both affected by rotation of a single lever.

8. The device of claim 7, wherein the lever carries a first cam for actuating the latch and a second cam for actuating the anti-rotation slide after the engagement of the latch with the toothed rail.

9. A medical instrument mountable on a vertical pole comprising:

(a) a case adapted to being held by two hands;

(b) a first clamping member carried by side of the case;

(c) a second clamping member movably confronting the first clamping member;

(d) biasing means urging the first and second clamping members together to permit gripping of a pole therebetween;

(e) an actuator adapted to being pressed to overcome the biasing means and cause relative movement of the first and second clamping members apart to permit their placement about a pole, whereby the instrument may be mounted on a pole by carrying it to the pole with the actuator depressed by the carrier'"'"'s digit to permit placement of the clamping members around the pole, and by then releasing the actuator to permit the biasing means to cause engagement of the clamping members with the pole;

(f) camming means associated with the actuator rotatable only when the actuator is not being pressed to positively prevent movement of the second clamping member; and

(g) interlock means preventing rotation of the camming means at times that the actuator is being pressed.

10. The device of claim 9 further comprising a movable slide carrying the second clamping member and a slot guiding the slide at an acute angle to the vertical.

11. The device of claim 9, further comprising an anti-rotation element which is movable by rotation of the camming means.