An arm support for a cardiac catheter lab
Patent Information
- Application Number
- CN202521714466.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-13
- Publication Date
- 2026-08-18
- Estimated Expiration
- 2035-08-13
AI Technical Summary
[0003]本实用新型要解决的技术问题是：现有心脏导管室进行手臂的垫高支撑操作活动性较差，难以满足多种手臂穿刺位的支撑需求，针对上述问题，提供了一种心脏导管室用手臂支架
该种心脏导管室用手臂支架，通过关节轴座来为两侧的臂托提供多角度的轴向转角调节，配合其支撑臂与关节轴座的球形万向连接端，以及支撑臂与立轴座的轴向升降结构，实现了整个手臂支架的多向调节功能，可具体根据导管床的安装位置、手臂支撑高度来调节臂托的支撑高度，提高了该手臂支架的适用性与灵活性，且结构操作简单便于安装，提高了该手臂支架的实用性。
Smart Images
Figure CN224640027U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and more specifically, to an arm support for a cardiac catheterization lab. Background Technology
[0002] The cardiac catheterization lab is a surgical environment equipped with cutting-edge imaging equipment and life support systems. It is mainly used for minimally invasive cardiac and vascular interventional diagnosis and treatment. Doctors insert a thin catheter through a blood vessel in the patient's wrist or leg and, under real-time guidance of X-ray fluoroscopy, guide the catheter to the target site such as the heart or coronary artery to complete key procedures such as coronary angiography (to check for vascular blockage), balloon angioplasty, stent implantation, cardiac electrophysiological examination, radiofrequency ablation, and congenital heart disease closure. In some scenarios, since surgery requires puncture and catheterization at the radial artery in the wrist, padding is usually added to the bottom of the arm at the puncture site to ensure the angle of the vascular access and to keep the arm straight and extended. Existing padding methods usually achieve this by raising the arm with padding material, which limits the arm support and fixation position to the gaps in the bed surface. The mobility and adaptability to the actual required fixation position are poor, thus limiting the application scenarios. Utility Model Content
[0003] The technical problem to be solved by this utility model is that the existing arm elevation and support operation in cardiac catheterization labs has poor mobility and is difficult to meet the support requirements of various arm puncture positions. In order to solve the above problems, an arm support for cardiac catheterization labs is provided.
[0004] The purpose and effect of this utility model are achieved by the following specific technical means: including an arm support, a joint bearing and a support arm, wherein there are two arm supports arranged symmetrically, the joint bearing is located at the bottom between the two arm supports, a toothed shaft is rotatably engaged in the joint bearing, and a pair of inner lining plates are rolledly engaged on both sides of the outer end of the toothed shaft, and the inner lining plates on both sides are respectively fixed to the bottom surface of the adjacent arm support. The joint bearing is inserted and fixed with a ball bearing shaft at its end, and a bearing member is fixed on the support arm. The bearing member and the ball bearing shaft are interference fit. The ball bearing shaft and the bearing member are spherical joint structures with built-in damping. The support arm is fixed with a shaft clamp at one end relative to the shaft handle, and a vertical shaft seat is provided through the shaft clamp.
[0005] A further preferred embodiment: the arm support has a soft padding at one end relative to the joint pivot, and a strap is fixed to the side end of the arm support.
[0006] A further preferred embodiment: the extended length of the inner lining plate matches the length of the arm support, and a shear arm is inserted and fixed between the end of the inner lining plate and the arm support, and the other end of the shear arm is embedded in the joint bearing, and the shear arm and the inner lining plate form an angular structure.
[0007] A further preferred embodiment: a spring crank is abutted between the shear arm and the joint bearing, and the end of the spring crank is fixed to the inner liner plate.
[0008] A further preferred embodiment: the shaft clamp and the vertical shaft seat are axially telescopic structures that are sleeved together, and the side end of the shaft clamp is threaded with a locking bolt.
[0009] A further preferred embodiment: The bottom of the vertical shaft seat is fixed with a clamping and matching L-shaped steel piece and a type of steel piece.
[0010] The beneficial effects of this utility model are: This type of cardiac catheterization lab arm support provides multi-angle axial rotation adjustment for the arm supports on both sides through a joint bearing. Combined with the spherical universal joint connection between the support arm and the joint bearing, as well as the axial lifting structure between the support arm and the vertical bearing, the entire arm support achieves multi-directional adjustment function. The support height of the arm supports can be adjusted according to the installation position of the catheterization bed and the arm support height, which improves the applicability and flexibility of the arm support. Moreover, the structure is simple to operate and easy to install, which improves the practicality of the arm support. Attached Figure Description
[0011] The present invention will be further described below with reference to the accompanying drawings.
[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the support arm structure of this utility model; Figure 3 This is a schematic diagram of the internal planar structure of the joint bearing of this utility model; Figure 4 This is a schematic diagram of the planar structure of the support arm and vertical shaft seat of this utility model.
[0013] Figures 1-4 In the middle: Arm support 1, joint bearing 2, ball bearing 3, bearing handle 4, vertical bearing 5, support arm 6, shaft clamp 7, inner liner 8, gear shaft 9, shear arm 10, spring crank 11, locking bolt 12, strap 13. Detailed Implementation
[0014] To better understand the above-mentioned objectives, features, and advantages of this utility model, the following description is provided in conjunction with the accompanying drawings. Figures 1-4The present invention will be further described in detail below with specific embodiments. The following embodiments are merely examples for implementing the present invention. It must be noted that the disclosed embodiments do not limit the scope of the present invention. On the contrary, any modifications and refinements made without departing from the scope of the present invention are within the patent protection scope of the present invention.
[0015] A cardiac catheterization lab arm support includes an arm support 1, a joint bearing 2, and a support arm 6. There are two arm supports 1 arranged symmetrically. The joint bearing 2 is located at the bottom between the two arm supports 1. A toothed shaft 9 is rotatably engaged in the joint bearing 2, and a pair of inner lining plates 8 are rolled on both sides of the outer end of the toothed shaft 9. The inner lining plates 8 on both sides are fixed to the bottom surface of the adjacent arm support 1. The end of the joint bearing 2 is inserted and fixed with a ball bearing 3, and the support arm 6 is fixed with a bearing 4. The bearing 4 and the ball bearing 3 are interference fit. The ball bearing 3 and the bearing 4 are spherical joint structures with built-in damping. A shaft clamp 7 is fixed at one end of the support arm 6 relative to the shaft handle 4, and a vertical shaft seat 5 is provided through the shaft clamp 7; The arm support uses two symmetrically arranged arm supports 1 as the support end of the arm. The two arm supports 1 are rotated and combined through the joint bearing 2 to adapt to the elbow joint movement of the arm. The corresponding rotation angle of each arm support 1 and the joint bearing 2 can be adjusted according to the specific needs. The inner liner 8 and the toothed shaft 9 are used to rotate relative to each other along the joint bearing 2. Meanwhile, the outer end of the joint bearing 2 in the axial direction can be adjusted according to the spherical joint structure of the ball bearing 3 and the bearing member 4 to adjust the relative axial angle between the joint bearing 2 and the bearing member 4 as needed, so as to adapt to the position adjustment of the arm support 1 under different conditions. The entire arm support 1 and joint bearing 2 are obliquely supported by the support arm 6 set in the axial direction. The support arm 6 is axially engaged with the vertical bearing 5 through the shaft clamp 7. According to the actual adjustment requirements, the height position of the entire arm support 1 and its support end can be adjusted by changing the axial clamping height between the shaft clamp 7 and the vertical bearing 5. Based on the above, the bottom of the vertical shaft seat 5 is fixed with a clamping and matching L-shaped steel piece and a type steel piece. The arm support is specifically clamped and fixed to the bottom of the catheter bed support through the vertical shaft seat 5. The clamping distance between the L-shaped steel piece and the type steel piece of the vertical shaft seat 5 is adjusted by bolting and assembly, corresponding to the thickness of the bed support. Furthermore, the arm support 1 has a soft pad on one end relative to the joint pivot 2, and a strap 13 is fixed to the side of the arm support 1. When the patient's arm is placed on the arm support 1, the wrist of the arm can be wrapped and fixed in the specific placement position by the strap 13. The strap 13 is a combination Velcro structure.
[0016] Furthermore, the extended length of the inner liner 8 matches the length of the arm support 1, and a shear arm 10 is inserted and fixed between the end of the inner liner 8 and the arm support 1, with the other end of the shear arm 10 being fitted into the joint bearing 2. The shear arm 10 and the inner liner 8 form an angled structure, such as... Figure 3 As shown, the entire arm support 1 structure is fixed to the joint bearing 2 by the bottom fixed inner liner plate 8 and provides longitudinal support force. On this basis, the angular shear structure formed by the shear arm 10 and the inner liner plate 8 is used to strengthen the structure of the connection end between the inner liner plate 8 and the joint bearing 2 and improve the support load of the entire inner liner plate 8. Among them, a spring crank 11 is abutted between the shear arm 10 and the joint bearing 2, and the end of the spring crank 11 is fixed to the inner liner plate 8. When the angle is adjusted and the inner liner plate 8 and the arm support 1 are pressed, the pressure will be transmitted from the end of the inner liner plate 8 to the end of the spring crank 11, and indirectly guided to the end of the shear arm 10. The spring extension structure of the spring crank 11 provides an elastic buffer section for the longitudinal pressure of the inner liner plate 8, so as to avoid the longitudinal pressure directly affecting the position of each movable joint connected to the arm support 1 when the single pressure is too large, thus changing the height position of the arm support 1 and improving the support strength and stability of the structure. Furthermore, the shaft clamp 7 and the vertical shaft seat 5 are axially telescopic structures that are sleeved together, and the side end of the shaft clamp 7 is threaded with a locking bolt 12. When adjusting the corresponding position of the shaft clamp 7 and the vertical shaft seat 5, the shaft clamp 7 and the vertical shaft seat 5 are fixed by screwing the locking bolt 12 inward to strengthen the connection structure between the shaft clamp 7 and the vertical shaft seat 5.
[0017] During installation, the vertical shaft seat 5 is used to clamp and fix it to the bottom of the guide bed frame. The clamping distance between the L-shaped steel part and the I-shaped steel part of the vertical shaft seat 5 is adjusted by bolting to correspond to the thickness of the bed frame. The arm support uses two symmetrically arranged arm supports 1 as the support end of the arm. The two arm supports 1 are rotated and combined through the joint bearing 2 to adapt to the elbow joint movement of the arm. The corresponding rotation angle of each arm support 1 and the joint bearing 2 can be adjusted according to the specific needs. When adjusting the rotation angle, the rolling cooperation between the inner liner plate 8 and the gear shaft 9 is used to rotate relative to each other along the axial direction of the joint bearing 2, and the damping strength of the rolling end of the gear shaft 9 and the inner liner plate 8 is used to maintain the corresponding angle. Meanwhile, the outer end of the joint bearing 2 in the axial direction can be adjusted according to the spherical joint structure of the ball bearing 3 and the bearing member 4 to adjust the relative axial angle between the joint bearing 2 and the bearing member 4 as needed, so as to adapt to the position adjustment of the arm support 1 under different conditions. The entire arm support 1 and joint bearing 2 are obliquely supported by the support arm 6 set in the axial direction. The support arm 6 is axially engaged with the vertical bearing 5 through the shaft clamp 7. According to the actual adjustment requirements, the axial clamping height of the shaft clamp 7 and the vertical bearing 5 can be changed. When adjusting the corresponding position of the shaft clamp 7 and the vertical bearing 5, the shaft clamp 7 and the vertical bearing 5 are fixed by screwing the locking bolt 12 inward to strengthen the connection structure between the shaft clamp 7 and the vertical bearing 5.
[0018] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. An arm support for a cardiac catheterization lab, characterized in that: It includes an arm support (1), a joint bearing (2) and a support arm (6). There are two arm supports (1) arranged symmetrically. The joint bearing (2) is located at the bottom between the two arm supports (1). A gear shaft (9) is rotatably fitted in the joint bearing (2), and a pair of inner lining plates (8) are rolled on both sides of the outer end of the gear shaft (9). The inner lining plates (8) on both sides are fixed to the bottom surface of the adjacent arm support (1). The joint bearing (2) is inserted and fixed with a ball bearing (3) at its end, and a bearing member (4) is fixed on the support arm (6). The bearing member (4) is interference-fitted with the ball bearing (3). The ball bearing (3) and the bearing member (4) are spherical joint structures with built-in damping. The support arm (6) is fixed with a shaft clamp (7) at one end relative to the shaft handle (4), and a vertical shaft seat (5) is provided through the shaft clamp (7).
2. The arm support for a cardiac catheterization lab according to claim 1, characterized in that: The arm support (1) has a soft pad at one end relative to the joint pivot (2), and a strap (13) is fixed to the side end of the arm support (1).
3. The arm support for a cardiac catheterization lab according to claim 1, characterized in that: The extended length of the inner lining plate (8) matches the length of the arm support (1), and a shear arm (10) is inserted and fixed between the end of the inner lining plate (8) and the arm support (1), and the other end of the shear arm (10) is embedded in the joint bearing (2). The shear arm (10) and the inner lining plate (8) form an angular structure.
4. The arm support for a cardiac catheterization lab according to claim 3, characterized in that: A spring crank (11) abuts between the shear arm (10) and the joint bearing (2), and the end of the spring crank (11) is fixed to the inner liner (8).
5. The arm support for a cardiac catheterization lab according to claim 1, characterized in that: The shaft clamp (7) and the vertical shaft seat (5) are axial telescopic structures that are sleeved together, and the side end of the shaft clamp (7) is threaded with a locking bolt (12).
6. The arm support for a cardiac catheterization lab according to claim 1, characterized in that: The bottom of the vertical shaft seat (5) is fixed with a clamping and matching L-shaped steel piece and a type of steel piece.