Height adjustment device and infusion stand

Abstract

A height adjustment device and an infusion stand, belonging to the field of medical equipment, comprises a fixed sleeve, a movable sleeve, a positioning sleeve, a locking assembly and an adjusting assembly; the positioning sleeve is arranged in the fixed sleeve and connected to the bottom end of the movable sleeve, the tube wall of the positioning sleeve is provided with a receiving groove, and the receiving groove radially penetrates the tube wall of the positioning sleeve; the locking assembly is arranged in the receiving groove and contacts with the inner wall of the fixed sleeve and the outer wall of the adjusting assembly; the adjusting assembly is penetrated in the movable sleeve and the positioning sleeve and can move axially; in a stationary state, the adjusting assembly squeezes the locking assembly so that the locking assembly is fixed to the inner wall of the fixed sleeve, and the movable sleeve can only be adjusted in height upward; when the adjusting assembly is separated from the locking assembly, the locking assembly and the fixed sleeve can be relatively moved, and the movable sleeve can be adjusted in height up and down; the operation is simple, the height adjustment process of the infusion stand is simplified, and the adjustment time of medical staff is saved.

Description

Technical Field

[0001] The present invention relates to the field of medical instruments, and in particular to a height adjustment device and an infusion stand. Background Art

[0002] With the progress of society and economic development, medical equipment is increasingly moving towards specialization, multi-function, integration and space saving. Multifunctional infusion stands have achieved multi-functional functions.

[0003] At present, the infusion stands commonly used in hospital wards are mostly plug-in infusion stands, which are composed of a base, a vertical pole, a height adjustment device and an infusion component. They can realize the three basic functions of moving, hanging infusion bottles and adjusting the height of infusion bottles.

[0004] When adjusting the height of the infusion stand, one hand is used to turn the height adjustment member and the other hand is used to adjust the height of the upright pole. That is, the height adjustment of the infusion bottle must be completed with both hands, which increases the adjustment time of medical staff and is complicated to operate. Summary of the invention

[0005] The purpose of the present invention is to provide a height adjustment device, which enables medical staff to adjust the height of an infusion stand with one hand, is simple and convenient to operate, saves medical staff's adjustment time and space, and improves work efficiency.

[0006] Another object of the present invention is to provide an infusion stand, which adopts the above-mentioned height adjustment device.

[0007] The embodiment of the present invention is achieved as follows:

[0008] A height adjustment device comprises a fixed sleeve and a movable sleeve, wherein the movable sleeve is inserted into the fixed sleeve and can move along the axial direction of the fixed sleeve; and further comprises: a positioning sleeve, a locking assembly and an adjustment assembly;

[0009] The positioning sleeve is arranged in the fixed sleeve and connected to the bottom end of the movable sleeve. The tube wall of the positioning sleeve is provided with a receiving groove, and the receiving groove radially penetrates the tube wall of the positioning sleeve.

[0010] The locking assembly is disposed in the receiving groove and is in contact with the inner wall of the fixing sleeve and the outer wall of the adjusting assembly;

[0011] The adjusting assembly is disposed inside the movable sleeve and the positioning sleeve, and is capable of moving along the axial direction of the movable sleeve and the positioning sleeve;

[0012] When the adjusting component squeezes the locking component, the locking component is fixed to the inner wall of the fixed sleeve. At this time, the movable sleeve can be adjusted upward in height but cannot be adjusted downward in height.

[0013] When the adjusting assembly is separated from the locking assembly, the locking assembly and the fixed sleeve can move relatively, and at this time, the movable sleeve can adjust the height upward and downward.

[0014] In a preferred embodiment of the present invention, the adjustment assembly includes a handle, a pull rod and a positioning column;

[0015] The handle is sleeved on the movable sleeve, the handle is connected to the pulling rod through a positioning pin, and a guide groove for accommodating the positioning pin is provided on the movable sleeve;

[0016] The positioning column is located in the positioning sleeve, and the positioning column is connected to the bottom of the pulling rod.

[0017] In a preferred embodiment of the present invention, the positioning column is in an inverted cone shape, with an upper end diameter greater than a lower end diameter, and is used to apply radial force to the locking assembly.

[0018] In a preferred embodiment of the present invention, the interior of the positioning sleeve comprises a first accommodating cavity and a second accommodating cavity which are interconnected, the first accommodating cavity is located above the second accommodating cavity, the diameter of the second accommodating cavity is larger than the diameter of the first accommodating cavity, the first accommodating cavity is used to accommodate the pull rod, and the second accommodating cavity is used to accommodate the positioning column.

[0019] In a preferred embodiment of the present invention, the adjustment assembly further includes an elastic reset member, which is disposed in the second accommodating cavity and located between the positioning column and the cavity bottom of the second accommodating cavity.

[0020] In a preferred embodiment of the present invention, the adjustment assembly further includes a limiter, and the limiter is disposed at the lower end of the pull rod to adjust the position of the positioning column on the pull rod.

[0021] In a preferred embodiment of the present invention, a plurality of the accommodating grooves are provided and are evenly distributed around the circumference of the positioning sleeve.

[0022] In a preferred embodiment of the present invention, the locking assembly includes a plurality of balls, one side of the balls contacts the inner wall of the fixing sleeve, and the other side of the balls contacts the positioning column.

[0023] In a preferred embodiment of the present invention, the height adjustment device comprises a reducing sleeve, and the reducing sleeve is used to connect the fixed sleeve and the movable sleeve.

[0024] The inner sleeve of the reducing sleeve is located between the inner wall of the fixed sleeve and the outer wall of the movable sleeve, and is used to prevent the positioning sleeve from escaping from the fixed sleeve.

[0025] An infusion stand, comprising a base, and the height adjustment device as described above;

[0026] The bottom of the fixed sleeve of the height adjustment device is connected to the base.

[0027] The beneficial effects of the height adjustment device provided by the embodiment of the present invention are:

[0028] In the height adjustment device, the positioning sleeve is arranged in the fixed sleeve, and the top end of the positioning sleeve is connected to the bottom end of the movable sleeve, and the movable sleeve can drive the positioning sleeve to move axially in the fixed sleeve; the tube wall of the positioning sleeve is provided with a receiving groove, and the receiving groove penetrates the tube wall of the positioning sleeve in the radial direction; the locking assembly is arranged in the receiving groove, and the locking assembly contacts the inner wall of the fixed sleeve; the adjustment assembly is inserted into the movable sleeve and the positioning sleeve, and can move axially along the movable sleeve and the positioning sleeve;

[0029] When the adjusting component is stationary relative to the movable sleeve, the adjusting component squeezes the locking component to fix the locking component on the inner wall of the fixed sleeve; at this time, since the positions of the locking component and the fixed sleeve are relatively fixed, the positions between the movable sleeve and the fixed sleeve are also relatively fixed, that is, the locking function of the movable sleeve and the fixed sleeve is achieved, and the movable sleeve can be adjusted upward in height, but cannot be adjusted downward in height;

[0030] When the adjusting assembly moves upward relative to the movable sleeve, the adjusting assembly disengages from the locking assembly. Since the adjusting assembly no longer applies pressure to the locking assembly, the locking assembly and the fixed sleeve can move relatively, and the positions of the movable sleeve and the fixed sleeve can also move relatively, that is, the unlocking function of the movable sleeve and the fixed sleeve is achieved, and the movable sleeve can be adjusted in height upward and downward.

[0031] Compared with the height adjustment method in the prior art, the height adjustment device provided in this embodiment can use a single-handed operation to operate the adjustment component, so as to easily and flexibly adjust the position between the fixed sleeve and the movable sleeve, thereby greatly reducing the workload of medical staff and saving their time. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 A schematic diagram of the structure of a height adjustment device provided in Embodiment 1 of the present invention;

[0034] Figure 2This is a schematic structural diagram of a positioning sleeve in Embodiment 1 of the present invention;

[0035] Figure 3 for Figure 2 Sectional view at A-A in the middle;

[0036] Figure 4 This is a schematic diagram of the structure of the positioning column in the first embodiment of the present invention;

[0037] Figure 5 It is a schematic structural diagram of a reducing sleeve in an embodiment of the present invention;

[0038] Figure 6 This is a schematic diagram of the structure of an infusion stand provided in Embodiment 2 of the present invention.

[0039] In the figure: 100 - fixed sleeve; 200 - movable sleeve; 300 - positioning sleeve; 310 - receiving groove; 320 - first receiving chamber; 330 - second receiving chamber; 400 - locking assembly; 500 - adjustment assembly; 510 - handle; 520 - pull rod; 530 - positioning column; 540 - positioning pin; 550 - limit body; 560 - elastic reset member; 600 - reducing sleeve; 10 - base; 20 - height adjustment device. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0043] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0044] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0045] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0047] Embodiment 1

[0048] Please refer to Figures 1 to 5 As shown, this embodiment provides a height adjustment device, including a fixed sleeve 100 and a movable sleeve 200, wherein the movable sleeve 200 is inserted into the fixed sleeve 100 and can move along the axial direction of the fixed sleeve 100; and further includes: a positioning sleeve 300, a locking assembly 400 and an adjustment assembly 500;

[0049] The positioning sleeve 300 is disposed in the fixed sleeve 100, and the top end of the positioning sleeve 300 is connected to the bottom end of the movable sleeve 200. The movable sleeve 200 can drive the positioning sleeve 300 to move axially in the fixed sleeve 100.

[0050] The tube wall of the positioning sleeve 300 is provided with a receiving groove 310, and the receiving groove 310 penetrates the tube wall of the positioning sleeve 300 in the radial direction;

[0051] The locking assembly 400 is disposed in the receiving groove 310 , and the locking assembly 400 is in contact with the inner wall of the fixed sleeve 100 and the outer wall of the adjustment assembly 500 ;

[0052] The adjustment assembly 500 is disposed inside the movable sleeve 200 and the positioning sleeve 300 and can move along the axial direction of the movable sleeve 200 and the positioning sleeve 300;

[0053] When the adjusting component 500 is stationary relative to the movable sleeve 200, the adjusting component 500 squeezes the locking component 400, so that the locking component 400 is fixed to the inner wall of the fixed sleeve 100; at this time, since the positions of the locking component 400 and the fixed sleeve 100 are relatively fixed, the positions between the movable sleeve 200 and the fixed sleeve 100 are also relatively fixed, that is, the locking function of the movable sleeve 200 and the fixed sleeve 100 is achieved;

[0054] When the adjusting assembly 500 moves upward relative to the movable sleeve 200, the adjusting assembly 500 is separated from the locking assembly 400. Since the adjusting assembly 500 no longer applies pressure to the locking assembly 400, the locking assembly 400 and the fixed sleeve 100 can move relatively, and the positions of the movable sleeve 200 and the fixed sleeve 100 can also move relatively, that is, the unlocking function of the movable sleeve 200 and the fixed sleeve 100 is achieved.

[0055] Compared with the height adjustment method in the prior art, the height adjustment device provided in this embodiment can realize the adjustment component 500 by single-handed operation, so as to easily and flexibly adjust the position between the fixed sleeve 100 and the movable sleeve 200, thereby greatly reducing the workload of medical staff and saving their time.

[0056] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in a preferred embodiment of the present invention, the adjustment assembly 500 includes a handle 510, a pull rod 520 and a positioning column 530;

[0057] The handle 510 is sleeved on the movable sleeve 200, and the handle 510 is connected to the pull rod 520 through the positioning pin 540. The movable sleeve 200 is provided with a guide groove for accommodating the positioning pin 540; the guide groove is used to guide the positioning pin 540 to move along the axial direction of the interactive sleeve;

[0058] The positioning column 530 is located in the positioning sleeve 300, and the positioning column 530 is connected to the bottom of the pulling rod 520. Preferably, the positioning column 530 is sleeved on the pulling rod 520. It should be noted that in this embodiment, other methods can be used to connect the positioning column 530 to the pulling rod 520. For example, a connecting buckle can be provided on the positioning column to directly connect with the pulling rod 520.

[0059] The positioning column 530 is used to apply pressure to the locking assembly 400 so that the locking assembly 400 is fixed to the inner wall of the fixed sleeve 100 .

[0060] In a preferred embodiment of the present invention, the above-mentioned positioning column 530 is in an inverted cone shape, and its upper end diameter is larger than the lower end diameter. When the pulling rod 520 and the positioning column 530 move downward, the conical surface of the positioning column 530 applies a radial force to the locking assembly 400, thereby causing the locking assembly 400 to squeeze the inner wall of the fixed sleeve 100, thereby achieving the function of fixing the position between the two.

[0061] In a preferred embodiment of the present invention, Figure 2 As shown, the interior of the positioning sleeve 300 is provided with a first accommodating cavity 320 and a second accommodating cavity 330 which are interconnected. The two accommodating cavities are arranged so that their axes coincide. The first accommodating cavity 320 is located above the second accommodating cavity 330. The diameter of the second accommodating cavity 330 is larger than the diameter of the first accommodating cavity 320. The first accommodating cavity 320 is used to accommodate the pulling rod 520 and at the same time guides the moving direction of the pulling rod 520, that is, enables the pulling rod 520 to move along the axial direction of the positioning sleeve 300; the second accommodating cavity 330 is used to accommodate the positioning column 530 so that the positioning column 530 also moves along the axial direction of the positioning sleeve 300.

[0062] Preferably, the positioning column 530 can be configured as a cylinder, and is detachably connected to the pull rod 520. Specifically, the positioning column 530 is installed on the pull rod 520, and during assembly, the two require a small matching clearance or an interference fit, so that the positioning column 530 does not separate from the pull rod 520.

[0063] In a preferred embodiment of the present invention, please refer to Figure 1 The adjustment assembly 500 further includes a limiter 550, which is disposed at the lower end of the pull rod 520 to adjust the position of the positioning column 530 on the pull rod 520; the limiter 550 may be a nut, with a thread disposed at the bottom of the pull rod 520, so that the nut can be threadedly connected to the pull rod 520, thereby facilitating the adjustment of the height of the positioning column 530 above the pull rod 520, so that in practical applications, the positioning column 530 can be adjusted to a suitable locking position. In a preferred embodiment of the present invention, the adjustment assembly 500 further includes an elastic reset member 560, which is disposed in the second accommodating cavity 330 and is located between the positioning column 530 and the cavity bottom of the second accommodating cavity 330. The elastic reset member 560 is preferably a spring. When the pull rod 520 is pulled upward, the positioning column 530 moves upward, causing the spring to be in a compressed state. When the handle 510 is released, the spring resets and pushes the positioning column 530 to move downward, applying pressure to the locking assembly 400 to lock and fix the sleeve 100.

[0064] In a preferred embodiment of the present invention, please refer to Figure 2 and Figure 3 A plurality of accommodating grooves 310 are provided on the positioning sleeve 300 and are evenly distributed in the circumferential direction of the positioning sleeve 300 .

[0065] In a preferred embodiment of the present invention, the locking assembly 400 includes a plurality of spheres, which can be made of metal. One side of the spheres contacts the inner wall of the fixed sleeve 100 , and the other side of the spheres contacts the positioning column 530 .

[0066] In a preferred embodiment of the present invention, please refer to Figure 1 and Figure 5 The height adjustment device includes a reducing sleeve 600, which is used to connect the fixed sleeve 100 and the movable sleeve 200. The inner sleeve of the reducing sleeve 600 is located between the inner wall of the fixed sleeve 100 and the outer wall of the movable sleeve 200, and is used to prevent the positioning sleeve 300 from detaching from the fixed sleeve 100.

[0067] Embodiment 2

[0068] This embodiment provides an infusion stand, such as Figure 6 As shown, a schematic diagram of the structure of an infusion stand is shown, which includes a base 10 and a height adjustment device 20 as provided in Example 1; since the specific structure of the height adjustment device 20 has been described in Example 1, it will not be repeated in this embodiment. Please refer to Example 1 for details.

[0069] The bottom of the fixing sleeve 100 in the height adjustment device 20 is connected to the base 10 .

[0070] The base 10 has moving wheels to facilitate the movement of the infusion stand.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A height adjustment device, comprising a fixed sleeve and a movable sleeve, wherein the movable sleeve is inserted into the fixed sleeve and can move along the axial direction of the fixed sleeve; characterized in that: Also includes: Positioning sleeve, locking assembly and adjustment assembly; The positioning sleeve is arranged in the fixed sleeve and connected to the bottom end of the movable sleeve. The tube wall of the positioning sleeve is provided with a receiving groove, and the receiving groove radially penetrates the tube wall of the positioning sleeve. The locking assembly is disposed in the receiving groove and contacts the inner wall of the positioning and fixing sleeve and the outer wall of the adjusting assembly; The adjusting assembly is disposed inside the movable sleeve and the positioning sleeve, and is capable of moving along the axial direction of the movable sleeve and the positioning sleeve; When the adjusting component squeezes the locking component, the locking component is fixed to the inner wall of the fixed sleeve; When the adjusting assembly is separated from the locking assembly, the locking assembly and the fixed sleeve can move relative to each other; The adjustment assembly includes a handle, a pull rod and a positioning column; The handle is sleeved on the movable sleeve, the handle is connected to the pulling rod through a positioning pin, and a guide groove for accommodating the positioning pin is provided on the movable sleeve; The positioning column is located in the positioning sleeve, and the positioning column is connected to the bottom of the pulling rod; The positioning column is in an inverted cone shape, with an upper end diameter larger than a lower end diameter, and is used to apply radial force to the locking assembly; The positioning sleeve has a first accommodating cavity and a second accommodating cavity interconnected with each other, the first accommodating cavity is located above the second accommodating cavity, the diameter of the second accommodating cavity is larger than the diameter of the first accommodating cavity, the first accommodating cavity is used to accommodate the pulling rod, and the second accommodating cavity is used to accommodate the positioning column; The adjustment assembly further includes an elastic reset member, which is disposed in the second accommodating cavity and located between the positioning column and the cavity bottom of the second accommodating cavity; The adjustment assembly further includes a limiter, which is disposed at the lower end of the pull rod and is used to adjust the position of the positioning column on the pull rod; The accommodating grooves are provided in plurality and are evenly distributed in the circumference of the positioning sleeve; The locking assembly includes a plurality of balls, one side of the balls contacts the inner wall of the fixed sleeve, and the other side of the balls contacts the positioning column; When the adjusting component is stationary relative to the movable sleeve, the adjusting component squeezes the locking component to fix the locking component to the inner wall of the fixed sleeve; at this time, since the positions of the locking component and the fixed sleeve are relatively fixed, the positions between the movable sleeve and the fixed sleeve are also relatively fixed, that is, the locking function of the movable sleeve and the fixed sleeve is achieved; When the adjusting assembly moves upward relative to the movable sleeve, the adjusting assembly disengages from the locking assembly. Since the adjusting assembly no longer applies pressure to the locking assembly, the locking assembly and the fixed sleeve can move relatively, and the positions of the movable sleeve and the fixed sleeve can also move relatively, that is, the unlocking function of the movable sleeve and the fixed sleeve is achieved.

2. The height adjustment device according to claim 1, characterized in that: The height adjustment device comprises a reducing sleeve, and the reducing sleeve is used to connect the fixed sleeve and the movable sleeve. The inner sleeve of the reducing sleeve is located between the inner wall of the fixed sleeve and the outer wall of the movable sleeve, and is used to prevent the positioning sleeve from escaping from the fixed sleeve.

3. An infusion stand, characterized in that: comprising a base, and a height adjustment device as claimed in claim 1 or 2; The bottom of the fixed sleeve of the height adjustment device is connected to the base.

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