Supporting arm and ECMO equipment

Abstract

The utility model discloses a supporting arm and ECMO equipment, and belongs to the technical field of medical instruments. The supporting arm comprises a supporting arm body, a locking unit connected with a pump driving device is arranged at one end of the supporting arm body in the length direction, an installation unit is arranged at the other end of the supporting arm body in the length direction, and the installation unit is used for being connected with an ECMO equipment cart; the locking unit comprises a locking sleeve, a locking shaft, a locking knob and a locking ball arranged on the pump driving device, the locking shaft is longitudinally arranged on the supporting arm body, an arc-shaped ball seat is arranged at the top of the locking shaft, and the locking sleeve is arranged on the locking shaft in a sleeving mode; the locking ball is arranged on the arc-shaped ball seat and located between the locking sleeve and the arc-shaped ball seat. The end part of the locking knob penetrates through the locking sleeve, and the locking knob is in threaded connection with the locking sleeve and is in inclined surface contact with the locking shaft. Adjustment of the supporting arm can be achieved through a simple mechanical structure, and the problems that an existing supporting arm is complex in structure and has oil leakage risks are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a support arm. Background Art

[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] ECMO (extracorporeal membrane oxygenation) equipment is an extracorporeal cardiopulmonary support auxiliary device used to provide temporary extracorporeal life support for patients with severe cardiopulmonary failure. ECMO equipment includes a pump drive device. When the pump drive device is running, it will generate vibration. In order to reduce vibration and adjust the spatial position of the pump drive device according to the layout of consumables and pipelines, a support arm is needed to lift the pump drive device, one end of which is fixed on the equipment cart, and the other end clamps the pump drive device and can be flexibly adjusted.

[0004] Considering the stability and load capacity of the support, most existing support arms are hydraulic support arms. However, the seals of the hydraulic system may leak hydraulic oil after long-term use or impact wear, causing the support arm to fail and pollute the ward environment.

[0005] The utility model patent with application number 202121511908.0 discloses a support arm, including a main body connected to a control host, an arm body connected to the main body, a ball joint, an adjustment component and a locking piece. The ball head is fixed by the cooperation of the adjustment component and the locking piece, so that the medical device maintains a predetermined position and posture. Although the mechanical structure is used to realize the design of the support arm, the structure is complicated, and the adjustment component and the locking piece need to be adjusted separately, which is troublesome to operate. Utility Model Content

[0006] In view of the shortcomings of the prior art, the purpose of the embodiments of the utility model is to provide a support arm and an extracorporeal cardiopulmonary support auxiliary device, which completes the design of the support arm using a simple mechanical structure. When the position of the pump drive device is adjusted, the support arm can be conveniently fastened by tightening the locking knob, which is easy to use.

[0007] In order to achieve the above purpose, the embodiment of the utility model provides the following technical solutions:

[0008] A support arm, comprising a support arm body, wherein one end of the support arm body along the length direction is provided with a locking unit connected to a pump drive device, and the other end of the support arm body along the length direction is provided with a mounting unit, wherein the mounting unit is used to be connected to an ECMO equipment cart;

[0009] The locking unit includes a locking sleeve, a locking shaft, a locking knob and a locking ball arranged on the pump drive device, wherein the locking shaft is longitudinally arranged on the support arm body, an arc-shaped ball seat is arranged on the top of the locking shaft, and the locking sleeve is sleeved on the locking shaft; the locking ball is arranged on the arc-shaped ball seat, and the locking ball is located between the locking sleeve and the arc-shaped ball seat; the end of the locking knob passes through the locking sleeve, the locking knob is threadedly connected to the locking sleeve, and is in inclined contact with the locking shaft.

[0010] By adopting the above technical solution, the support arm is fixed on the ECMO equipment cart using the mounting unit, and the pump drive device moves with the locking ball to adjust the direction, angle and height of the support arm. When the position of the pump drive device is adjusted, since there is an inclined contact between the locking knob and the locking shaft, it is only necessary to tighten the locking knob to move the locking sleeve downward, fix the ball of the locking ball, and conveniently tighten the support arm. The operation is simple and easy to use.

[0011] In some embodiments, the mounting unit includes a mounting cavity and a locking screw, one end of the locking screw passes through the mounting cavity, and the locking screw is threadedly connected to the mounting cavity, and the locking screw is located at one end of the mounting cavity;

[0012] One end of the locking screw is provided with a longitudinally arranged movable pressing plate, and the other end of the locking screw is provided with a longitudinally arranged fixed knob;

[0013] The other end of the installation cavity is arranged on the support arm body.

[0014] By adopting the above technical solution, a mounting rod for installing the support arm is provided on the ECMO equipment cart. When in use, the mounting rod is passed through the mounting cavity, the fixing knob is turned, and the movable pressure plate moves to the other end of the mounting cavity, clamping the mounting rod together with the side wall of the mounting cavity to complete the connection between the support arm and the ECMO equipment cart. The above operation can be completed without the aid of other equipment, and it is easy to use.

[0015] In some embodiments, a limiting groove is provided on the side of the movable pressure plate, and a limiting top block matching the limiting groove is provided at the other end of the locking screw, and the limiting top block is engaged with the limiting groove.

[0016] By adopting the above technical solution, the movable pressing plate is prevented from being separated from the locking screw by the limiting top block, thereby improving the stability of the structure.

[0017] In some embodiments, openings are respectively formed at both ends of the installation cavity along the height direction and at one side of the installation cavity along the length direction.

[0018] By adopting the above technical solution, the installation rod can enter the installation cavity from the top or side of the installation cavity, which is convenient for flexible use according to the actual installation position of the installation rod.

[0019] In some embodiments, a tightening screw is further included, and one end of the tightening screw passes through the support arm body and the locking shaft in sequence and is located inside the locking shaft.

[0020] By adopting the above technical solution, the locking shaft is fixed to the front end of the support arm by a tightening screw.

[0021] In some embodiments, a trapezoidal groove is provided on the circumferential side of the locking shaft, and the end of the locking knob is a frustoconical structure.

[0022] By adopting the above technical solution, the locking knob and the locking shaft are in inclined contact. When the locking knob is tightened, the locking sleeve moves downward to clamp the ball head of the locking ball, thereby achieving a firm positioning of the pump drive device.

[0023] In some embodiments, the locking ball includes a spherical body and a connecting piece, and the connecting piece is arranged on the circumferential side of the spherical body;

[0024] The sphere is rotatably connected to the arc-shaped ball seat, and the connecting piece is connected to a pump driving device.

[0025] By adopting the above technical solution, the locking ball is fastened to the pump driving device through the connecting piece, and the direction, angle and height of the support arm can be adjusted by the rotation between the ball and the arc-shaped ball seat.

[0026] In some embodiments, a groove is formed on the circumferential side of the locking sleeve, and the width of the groove is greater than the width of the connecting member and smaller than the radius of the sphere.

[0027] By adopting the above technical solution, as the locking ball rotates, the connecting piece can abut against the groove, so that the rotation angle of the locking ball reaches 180 degrees, meeting a wider range of angle requirements.

[0028] In some embodiments, a mounting seat is disposed at one end of the support arm body, and the locking unit is disposed on the mounting seat.

[0029] By adopting the above technical solution, the overall structure of the equipment is made more stable.

[0030] An embodiment of the utility model also provides an ECMO device, comprising the support arm and pump drive device mentioned above, wherein the support arm is arranged on the pump drive device.

[0031] The technical solution provided by the utility model has at least the following technical effects or advantages:

[0032] 1. The technical solution provided by the utility model completely adopts a simple mechanical structure to design the mechanical arm, there is no oil leakage problem, and the direction, angle and height can be adjusted at will. When the position of the pump drive device is adjusted, the support arm can be conveniently fastened by tightening the locking knob, which is easy to operate.

[0033] 2. The technical solution provided by the utility model adopts a single-arm structural design for the support arm. The support arm is short, and the force required to support the pump drive device is small. After adjustment, it can be reliably positioned and has a large load-bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0035] Figure 1 It is a structural schematic diagram provided by an embodiment of the utility model;

[0036] Figure 2 It is a structural schematic diagram of the installation unit provided in an embodiment of the utility model;

[0037] In the figure: 1. Locking ball; 2. Locking sleeve; 3. Locking shaft; 4. Locking knob; 5. Support arm body; 6. Fixing knob; 7. Locking screw; 8. Limiting top block; 9. Movable pressure plate; 10. Tightening screw.

[0038] In order to show the positions of various parts, the distances or sizes between them are exaggerated and the schematic diagram is for reference only. DETAILED DESCRIPTION

[0039] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0040] Embodiment 1

[0041] As introduced in the background technology, the support arm in the prior art has the risk of oil leakage or a complex mechanical structure and cumbersome operation process. In order to solve the above technical problems, the utility model proposes a support arm.

[0042] Combination Figure 1-Figure 2 The support arm includes a support arm body 5, a locking unit for connecting to a pump drive device, and an installation unit for connecting to an ECMO equipment cart. The locking unit includes a locking sleeve 2, a locking shaft 3, a locking knob 4, and a locking ball 1. The locking ball 1 includes a sphere and a connecting piece, and the connecting piece is fixed to the circumferential side of the sphere. The installation unit includes an installation cavity and a locking screw 7.

[0043] In order to better fix the installation unit, one end of the support arm body 5 along the length direction is connected to a circular mounting seat, and a tightening screw 10 is installed in the middle of the circular mounting seat. One end of the tightening screw 10 passes through the circular mounting seat and the locking shaft 3 in sequence and is connected to the locking shaft 3; the locking shaft 3 is arranged longitudinally, and the top of the locking shaft 3 is connected to an arc ball seat. A circular opening is opened at the top of the locking sleeve 2, and the diameter of the circular opening is smaller than the diameter of the locking ball 1. The locking sleeve 2 is sleeved on the locking shaft 3, and the locking ball 1 is placed on the arc ball seat and is located between the locking sleeve 2 and the arc ball seat. In the initial state, there is a certain gap between the locking sleeve 2 and the ball to ensure the normal rotation of the ball.

[0044] A longitudinally arranged inverted trapezoidal groove is provided on the circumferential side of the locking shaft 3, the end of the locking button is a truncated cone structure, the end of the locking knob 4 passes through the locking sleeve 2 and is threadedly connected to the locking sleeve 2, and the end of the locking knob 4 is a conical structure, so that there is an inclined contact between the locking knob 4 and the locking shaft 3. When the locking knob 4 is rotated, the locking knob 4 moves along the inverted trapezoidal groove toward the inside of the locking sleeve 2 to drive the locking sleeve 2 to move downward, clamp the ball head of the locking ball 1, and realize the firm positioning of the pump drive device.

[0045] The installation cavity includes a V-shaped side wall, a transverse side wall, an inclined side wall and a longitudinal side wall connected in sequence, forming a semi-enclosed structure with an opening on one side along the length direction. The installation cavity also has openings at both ends along the height direction. The installation rod installed on the ECMO equipment cart can enter the interior of the installation cavity through the end opening or one side opening, making it more convenient to use.

[0046] The installation cavity is an integral structure with the support arm body 5, and the installation cavity is located at the other end of the support arm body 5 along the length direction. One end of the locking screw 7 passes through the longitudinal side wall, and the locking screw 7 is threadedly connected to the longitudinal side wall. A longitudinally arranged movable pressing plate 9 is installed at one end of the locking screw 7, and a longitudinally arranged fixing knob 6 is installed at the other end of the locking screw 7.

[0047] As an embodiment, a groove is provided on the circumferential side of the locking sleeve 2, the width of the groove is greater than the width of the connecting piece and smaller than the radius of the sphere. During the rotation of the sphere, the connecting piece can move into the groove, so that the sphere can rotate to 180 degrees, thereby expanding the rotation range of the sphere.

[0048] In order to make the structure of the movable pressure plate 9 more stable, a limiting groove is opened on the side of the movable pressure plate 9, and the other end of the locking screw 7 is connected to a limiting top block 8 matching the limiting groove. The limiting top block 8 is clamped with the limiting groove to prevent the movable pressure plate 9 from falling off.

[0049] The working method of this embodiment is as follows:

[0050] When in use, the mounting rod on the ECMO device is passed through the mounting cavity, and the fixing knob 6 is rotated to drive the movable pressure plate 9 to move toward the support arm body 5, and clamped on the mounting rod together with the V-shaped side wall of the mounting cavity.

[0051] The ball of the locking ball 1 is fastened to the pump drive device through a connector, and the pump drive device moves with the locking ball 1. The ball of the locking ball 1 is placed between the locking sleeve 2 and the arc-shaped ball seat. According to the use requirements of the pump drive device, the direction, angle and height of the support arm can be adjusted by rotating the ball around the arc-shaped ball seat or rotating with the arc-shaped ball seat.

[0052] When the pump drive device is adjusted into place, rotate the locking button. Since there is an inclined contact between the locking knob 4 and the locking shaft 3, when the locking knob 4 is tightened, the locking sleeve 2 moves downward to clamp the ball head of the locking ball 1, thereby firmly positioning the pump drive device.

[0053] Embodiment 2

[0054] Based on the above-mentioned support arm, an embodiment of the utility model further provides an ECMO device, on which the support arm described in the above-mentioned embodiment is arranged. Since the above-mentioned support arm has the above-mentioned technical effect, the technical effect of the ECMO device using the support arm please refer to the above-mentioned embodiment.

[0055] Although the above describes the specific implementation methods of the utility model in combination with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A support arm, characterized in that: It includes a support arm body, one end of the support arm body along the length direction is provided with a locking unit connected to the pump drive device, and the other end of the support arm body along the length direction is provided with a mounting unit, and the mounting unit is used to be connected to the ECMO equipment cart; The locking unit comprises a locking sleeve, a locking shaft, a locking knob and a locking ball arranged on the pump driving device, wherein the locking shaft is longitudinally arranged on the supporting arm body, and an arc-shaped ball seat is arranged on the top of the locking shaft; the locking sleeve is sleeved on the locking shaft, the locking ball is arranged on the arc-shaped ball seat and the locking ball is located between the locking sleeve and the arc-shaped ball seat; the end of the locking knob passes through the locking sleeve, the locking knob is threadedly connected to the locking sleeve, and is in inclined contact with the locking shaft.

2. The support arm according to claim 1, characterized in that: The mounting unit comprises a mounting cavity and a locking screw, one end of the locking screw passes through the mounting cavity, and the locking screw is threadedly connected to the mounting cavity, and the locking screw is located at one end of the mounting cavity; One end of the locking screw is provided with a longitudinally arranged movable pressing plate, and the other end of the locking screw is provided with a longitudinally arranged fixed knob; The other end of the installation cavity is arranged on the support arm body.

3. The support arm according to claim 2, characterized in that: A limiting groove is provided on the side of the movable pressing plate, and a limiting top block matching the limiting groove is provided at the other end of the locking screw, and the limiting top block is clamped with the limiting groove.

4. The support arm according to claim 2, characterized in that: Openings are respectively formed at both ends of the installation cavity along the height direction and at one side of the installation cavity along the length direction.

5. The support arm according to claim 1, characterized in that: It also includes a tightening screw, one end of which passes through the support arm body and the locking shaft in sequence and is located inside the locking shaft.

6. The support arm according to claim 1, characterized in that: A trapezoidal groove is provided on the circumferential side of the locking shaft, and the end of the locking knob is a frustum structure.

7. The support arm according to claim 1, characterized in that: The locking ball comprises a spherical body and a connecting piece, wherein the connecting piece is arranged on the circumferential side of the spherical body; The sphere is rotatably connected to the arc-shaped ball seat, and the connecting piece is connected to a pump driving device.

8. The support arm according to claim 7, characterized in that: A groove is provided on the circumferential side of the locking sleeve, and the width of the groove is greater than the width of the connecting piece and smaller than the radius of the sphere.

9. The support arm according to claim 1, characterized in that: A mounting seat is disposed at one end of the support arm body, and the locking unit is disposed on the mounting seat.

10. An ECMO device, characterized in that: It comprises the support arm and pump drive device according to any one of claims 1 to 9, wherein the support arm is arranged on the pump drive device.

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