Magnetic resonance hand fixing device

Abstract

The utility model discloses a magnetic resonance hand fixing device which comprises a base, a magnetic resonance arm, a magnetic resonance arm and a magnetic resonance arm. The first clamping piece is arranged on the base, the first clamping piece is provided with a first elastic body, and the first elastic body is provided with a first profiling half cavity; the second clamping piece is movably arranged on the base, the second clamping piece is provided with a second elastic body opposite to the first elastic body, the second elastic body is provided with a second profiling half cavity, the second clamping piece is connected with an adjusting assembly, and the adjusting assembly is used for driving the second clamping piece to move to be close to the first clamping piece; the first profiling half cavity and the second profiling half cavity jointly define a clamping cavity used for clamping the hand. According to the magnetic resonance hand fixing device of the structure, the size of the clamping cavity can be changed to adapt to patients with different palm sizes, the clamping cavity is similar to the hand curve of a person to increase the contact area of the clamping cavity and the hand curve of the person, and the hand fixing comfort of the patient is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and in particular to a magnetic resonance hand fixation device. Background Art

[0002] At present, magnetic resonance imaging is a medical imaging technology that uses the principle of magnetic resonance. As a diagnostic and treatment method, it is widely used to examine various parts of the body. In particular, as a non-invasive examination method, it is often used to examine soft tissue lesions, central nervous system diseases, and cervical and lumbar spine diseases.

[0003] Among them, when the patient undergoes an MRI examination, in order to prevent the body from moving and causing blurred images, thereby affecting the accuracy of the diagnosis results, the patient is usually required to maintain a fixed posture, and the patient's hands, feet and other parts need to be fixed. At present, existing magnetic resonance equipment usually uses a fixed cylinder as a fixing part to fix the hand, such as a hand fixing device for magnetic resonance disclosed in authorization announcement number CN205458682U. However, since the fixed cylinder only has one size, it is not suitable for patients with different palm sizes. It is easy to cause a gap between the fixed sleeve and the hand, and the inside of the cylinder is not adjustable. When wearing it, the patient will experience discomfort due to excessive local force, which will affect the results of the magnetic examination. Utility Model Content

[0004] In response to the above shortcomings, the present invention proposes a magnetic resonance hand fixation device, which can not only change the size of the clamping cavity to adapt to patients with different palm sizes, but also the clamping cavity is similar to the curve of the human hand to increase the contact area between the two, which is conducive to improving the comfort of the patient's hand fixation.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A magnetic resonance hand fixation device includes: a base; a first clamping member disposed on the base, the first clamping member being provided with a first elastic body, the first elastic body being provided with a first contoured half-cavity; a second clamping member movably disposed on the base, the second clamping member being provided with a second elastic body opposite to the first elastic body, the second elastic body being provided with a second contoured half-cavity, the second clamping member being connected to an adjustment assembly, the adjustment assembly being used to drive the second clamping member to move closer to the first clamping member so that the first contoured half-cavity and the second contoured half-cavity jointly define a clamping cavity for clamping the hand.

[0007] The magnetic resonance hand fixing device according to the embodiment of the present utility model has at least the following beneficial effects: when in use, the patient places the hand between the first clamping member and the second clamping member, and then moves the second clamping member through the adjustment assembly. It can not only change the size of the clamping cavity to adapt to patients with different palm sizes, but also the first profiling half cavity and the second profiling half cavity jointly form a clamping cavity similar to the curve of the human hand, which is beneficial to increasing the contact area between the first elastic body and the second elastic body and the human hand, thereby avoiding the phenomenon of excessive local force on the patient's hand, being beneficial to improving the comfort and stability of the patient's hand fixation, and further reducing the impact on magnetic examination. Among them, the first elastic body and the second elastic body can utilize their own elastic deformation to better wrap the human hand, which is beneficial to the clamping force generated by the first clamping member and the second clamping member being more evenly distributed on the human hand.

[0008] Further, the adjustment assembly includes a first gear and a first rack that mesh with each other. One end of the first rack is connected to the second clamping member. The first rack extends in the left-right direction. The first gear is rotatably arranged relative to the base. A first limit block is provided at the upper end of the first gear. The first limit block is provided with a first limit member in a pluggable manner. The first limit member is inserted into the first limit block to limit the rotation of the first gear.

[0009] Further, it further includes a fixing column. The first gear is rotatably arranged on the fixing column. A plurality of first limit holes are circumferentially distributed on the first limit block. The fixing column is provided with a second limit hole. When the first limit member is inserted into one of the first limit holes and the second limit hole, the first gear is fixedly arranged relative to the fixing column.

[0010] Further, it further includes a moving seat. The moving seat is movably arranged on the base. The first clamping member and the second clamping member are both arranged on the moving seat. The moving seat is connected with a second rack that extends in the front-rear direction. One end of the second rack is in driving engagement with a second gear. A second limit block is provided at the upper end of the second gear. The second limit block is provided with a second limit member in a pluggable manner. The second limit member is inserted into the second limit block to limit the rotation of the second gear.

[0011] Further, it further includes a guiding component. The guiding component includes a guiding groove and a guiding block that are slidably matched with each other. The guiding groove extends in the front-rear direction. One of the guiding groove and the guiding block is arranged on the second rack, and the other is arranged on the base.

[0012] Further, the base is provided with a sliding groove. The moving seat is slidably matched with the sliding groove.

[0013] Further, the groove surfaces of the first profiling half cavity and the second profiling half cavity both include a first arc concave surface, a second arc concave surface, and an arc convex surface connecting the two. The first arc concave surface and the arc convex surface match the curve of the human wrist, and the second arc concave surface matches the curve of the human palm.

[0014] Further, the first arc concave surface, the second arc concave surface, and the arc convex surface are of an integral arc surface structure.

[0015] Further, a connecting belt is provided at the upper end of the first clamping member, and the second clamping member is provided with a through hole through which one end of the connecting belt can pass. One end of the connecting belt is provided with a hook-and-loop fastener surface, and the other end of the connecting belt is provided with a hook-and-loop fastener mother surface. The hook-and-loop fastener surface can selectively adhere to a partial area of the hook-and-loop fastener mother surface.

[0016] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0018] Figure 1 is a schematic structural diagram of an embodiment of a magnetic resonance hand fixing device of the present utility model;

[0019] Figure 2 is Figure 1 a partial enlarged view of A in;

[0020] Figure 3 is Figure 1 a schematic structural diagram of another perspective of;

[0021] Figure 4 is Figure 1 a cross-sectional view of the first clamping member in;

[0022] In the figure: base 100, chute 101, first clamping member 200, first elastic body 300, first profiling half cavity 310, first arc concave surface 311, second arc concave surface 312, arc convex surface 313, second clamping member 400, second elastic body 500, second profiling half cavity 510, adjustment assembly 600, first gear 610, first limit block 611, first limiting member 612, first limit hole 613, first rack 620, auxiliary rod 621, fixed column 630, moving seat 700, second rack 710, second gear 720, second limit block 721, second limiting member 722, connecting belt 800, through hole 810. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part rather than all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "inner", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0025] In the description of the present utility model, the meaning of "several" is one or more, the meaning of "multiple" is two or more, and understandings such as "greater than", "less than", "exceeding", etc. do not include the present number, and understandings such as "above", "below", "within", etc. include the present number. If the terms "first" and "second" are described, they are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set" and "connected" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0027] See Figures 1 to 4 , a magnetic resonance hand fixing device, comprising: a base 100, a first clamping member 200, and a second clamping member 400. Among them, the first clamping member 200 is arranged on the base 100, the first clamping member 200 is provided with a first elastic body 300, and the first elastic body 300 is provided with a first profiling half cavity 310; the second clamping member 400 is movably arranged on the base 100, the second clamping member 400 is provided with a second elastic body 500 opposite to the first elastic body 300, the second elastic body 500 is provided with a second profiling half cavity 510, and the second clamping member 400 is connected with an adjustment assembly 600. The adjustment assembly 600 is used to drive the second clamping member 400 to move closer to the first clamping member 200 so that the first profiling half cavity 310 and the second profiling half cavity 510 jointly define a clamping cavity for clamping the hand.

[0028] When the magnetic resonance hand fixation device with the above structure is in use, the patient places the hand between the first clamping member 200 and the second clamping member 400, and then moves the second clamping member 400 through the adjustment assembly 600. This can not only change the size of the clamping cavity to fit patients with different palm sizes, but also the first profiling half-cavity 310 and the second profiling half-cavity 510 jointly form a clamping cavity similar to the curve of the human hand, which is beneficial to increasing the contact area between the first elastic body 300, the second elastic body 500 and the human hand, thus avoiding the phenomenon of excessive local force on the patient's hand, improving the comfort and stability of the patient's hand fixation, and further reducing the impact on magnetic examination. Among them, by using the first elastic body 300 and the second elastic body 500, their own elastic deformation can be used to better wrap the human hand, which is beneficial to the clamping force generated by the first clamping member 200 and the second clamping member 400 to be more evenly distributed on the human hand.

[0029] In some embodiments, the device can also be applied to arm fixation, and the clamping cavity formed by the first profiling half-cavity 310 and the second profiling half-cavity 510 is similar to the joint curve of the arm. When the patient undergoes magnetic resonance examination and needs to keep the arm straight continuously, the first elastic body 300 and the second elastic body 500 wrap the joint of the arm, so as to keep the patient's arm straight for a certain period of time. Among them, in order to improve the comfort of the patient's arm fixation, heating sheets can be arranged between the first clamping member 200 and the first elastic body 300, and between the second clamping member 400 and the second elastic body 500, so that the heat is transferred to the arm through the heating sheets, which is beneficial to the blood circulation of the arm to improve the comfort of the arm fixation. It can be understood that the base 100 can be made of flexible materials such as cotton, which is convenient for people to fix the base 100 on the examination bed by bonding, and is also beneficial to the base 100 to generate corresponding compressive deformation under pressure to improve people's use experience. In addition, according to the size of the examination bed, the base 100 can be installed at one end of the examination bed, so as to facilitate lifting the patient's hands above the head.

[0030] See Figures 1 to 3, Further, the adjustment component 600 includes a first gear 610 and a first rack 620 that mesh with each other. One end of the first rack 620 is connected to the second clamping member 400. The first rack 620 is arranged to extend in the left-right direction. The first gear 610 is rotatably arranged relative to the base 100. A first limit block 611 is provided at the upper end of the first gear 610. A first limit member 612 is detachably arranged on the first limit block 611. The first limit member 612 is inserted into the first limit block 611 to limit the rotation of the first gear 610. Specifically, when it is necessary to move the second clamping member 400, first remove the first limit member 612, then drive the first rack 620 to move or drive the first gear 610 to rotate, so that the first rack 620 moves in the left-right direction. Then, move the first rack 620 to a suitable position according to the size of the patient's palm. Finally, insert the first limit member 612 into the first limit block 611 to limit the rotation of the first gear 610, thereby completing the step of fixing the patient's hand. Among them, with the cooperation of the first gear 610 and the second rack 710, the overall structure is simple and compact. On the one hand, it can quickly and accurately move and position the second clamping member 400, which is beneficial to improving the accuracy of adjusting the clamping cavity. On the other hand, it is beneficial to improve the smoothness of the movement of the second clamping member 400. It can be understood that an auxiliary rod 621 may be provided on the first gear 610 or the first rack 620, so as to facilitate people to hold the auxiliary rod 621 to drive the first rack 620 to move or drive the first gear 610 to rotate. It should be noted that the first clamping member 200, the second clamping member 400, the first gear 610, the first rack 620 and other components are all made of non-metallic materials, and specifically, plastic materials can be used for integral injection molding, so that the device is suitable for the use scenario of magnetic resonance.

[0031] See Figures 1 to 3 , Further, it further includes a fixing column 630. The first gear 610 is rotatably arranged on the fixing column 630. A plurality of first limit holes 613 are circumferentially distributed on the first limit block 611. The fixing column 630 is provided with a second limit hole. When the first limit member 612 is inserted into one of the first limit holes 613 and the second limit hole, the first gear 610 is fixedly arranged relative to the fixing column 630, so that the first rack 620 cannot move and quickly fixes the position of the second clamping member 400. The structure is simple, and the fixing of the first rack 620 is fast and convenient.

[0032] Further, it further includes a moving seat 700. The moving seat 700 is movably arranged on the base 100. Both the first clamping member 200 and the second clamping member 400 are arranged on the moving seat 700. The moving seat 700 is connected with a second rack 710 extending in the front-rear direction. One end of the second rack 710 is in driving engagement with a second gear 720. The upper end of the second gear 720 is provided with a second limit block 721. The second limit block 721 is provided with a second limit member 722 in a pluggable manner. The second limit member 722 is inserted into the second limit block 721 to limit the rotation of the second gear 720. Thus, the movement of the second rack 710 is used to drive the moving seat 700 to move in the front-rear direction, which is beneficial to adjust according to the different heights and arm lengths of patients, and then match the positions for different patients to place their hands. It can be understood that the second limit member 722 and the second limit block 721.

[0033] Further, it further includes a guiding component. The guiding component includes a guiding groove and a guiding block that are slidably matched with each other. The guiding groove extends in the front-rear direction. One of the guiding groove and the guiding block is arranged on the second rack 710, and the other is arranged on the base 100, so as to avoid the deviation of the movement of the second rack 710. It can be understood that a guiding component can also be arranged between the first gear 610 and the first rack 620, so as to improve the accuracy of the movement of the first rack 620.

[0034] See Figure 1 and Figure 3 Further, the base 100 is provided with a sliding groove 101. The moving seat 700 is slidably matched with the sliding groove 101, so that the moving seat 700 can be accommodated in the sliding groove. It can be understood that the upper end surface of the moving seat 700 and the upper end surface of the base 100 are on the same horizontal plane, so as to avoid the upper end surface of the moving seat 700 being too prominent and affecting the placement of a person's hand.

[0035] See Figure 4 Further, the groove surfaces of the first profiling semi-cavity 310 and the second profiling semi-cavity 510 both include a first arc concave surface 311, a second arc concave surface 312, and an arc convex surface 313 connecting the two. The first arc concave surface 311 and the arc convex surface 313 match the curve of a person's wrist, and the second arc concave surface 312 matches the curve of a person's palm, which is beneficial to the contact area between the first elastic body 300, the second elastic body 500 and a person's hand, so that the clamping force of the first elastic body 300 and the second elastic body 500 can act evenly on a person's hand, improving the comfort of the user. In some embodiments, a smooth layer is provided on the surface of the groove surfaces of the first profiling semi-cavity 310 and the second profiling semi-cavity 5I0. The smooth layer is made of materials such as leather, cloth, silk, etc., so as to improve the comfort of the hand skin contacting the first elastic body 300 and the second elastic body 500.

[0036] Furthermore, the first arc-shaped concave surface 311, the second arc-shaped concave surface 312, and the arc-shaped convex surface 313 form an integral arc-shaped surface structure. Specifically, the first elastic body 300 and the second elastic body 500 are respectively composed of integrally formed sponge or silica gel, and the specific details are not elaborated here.

[0037] See Figure 1 and Figure 3 , furthermore, a connecting band 800 is provided at the upper end of the first clamping member 200, and the second clamping member 400 is provided with a through hole 810 through which one end of the connecting band 800 can pass. One end of the connecting band 800 is provided with a hook surface of a Velcro, and the other end of the connecting band 800 is provided with a loop surface of a Velcro. The hook surface of the Velcro can selectively fit with a partial area of the loop surface of the Velcro, so that through the cooperation of the hook surface and the loop surface of the Velcro, it is beneficial to further stabilize the clamping effect of the first clamping member 200 and the second clamping member 400.

[0038] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0039] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A magnetic resonance hand fixation device, characterized in that, Comprising: A base (100); A first clamping member (200) provided on the base (100), the first clamping member (200) being provided with a first elastic body (300), the first elastic body (300) being provided with a first profiling semi-cavity (310); A second clamping member (400) movably provided on the base (100), the second clamping member (400) being provided with a second elastic body (500) opposite to the first elastic body (300), the second elastic body (500) being provided with a second profiling semi-cavity (510), the second clamping member (400) being connected to an adjustment assembly (600), the adjustment assembly (600) being configured to drive the second clamping member (400) to move closer to the first clamping member (200) so that the first profiling semi-cavity (310) and the second profiling semi-cavity (510) jointly define a clamping cavity for clamping a hand; The adjustment assembly (600) includes a first gear (610) and a first rack (620) that mesh with each other, one end of the first rack (620) being connected to the second clamping member (400), the first rack (620) extending in the left-right direction, the first gear (610) being rotatably provided relative to the base (100), the upper end of the first gear (610) being provided with a first limit block (611), the first limit block (611) being provided with a first limit member (612) in a pluggable manner, the first limit member (612) being inserted into the first limit block (611) to limit the rotation of the first gear (610); Further included is a fixed column (630), the first gear (610) being rotatably provided on the fixed column (630), a plurality of first limit holes (613) being circumferentially distributed on the first limit block (611), the fixed column being provided with a second limit hole, when the first limit member (612) is inserted into one of the first limit holes (613) and the second limit hole, the first gear (610) is fixedly provided relative to the fixed column (630); Further included is a moving seat (700), the moving seat (700) being movably provided on the base (100), both the first clamping member (200) and the second clamping member (400) being provided on the moving seat (700), the moving seat (700) being connected to a second rack (710) extending in the front-rear direction, one end of the second rack (710) being in driving engagement with a second gear (720), the upper end of the second gear (720) being provided with a second limit block (721), the second limit block (721) being provided with a second limit member (722) in a pluggable manner, the second limit member (722) being inserted into the second limit block (721) to limit the rotation of the second gear (720); The groove surfaces of the first profiling semi-cavity (310) and the second profiling semi-cavity (510) both include a first arc-shaped concave surface (311), a second arc-shaped concave surface (312), and an arc-shaped convex surface (313) connecting the two. The first arc-shaped concave surface (311) and the arc-shaped convex surface (313) match the curve of the human wrist, and the second arc-shaped concave surface (312) matches the curve of the human palm.

2. The magnetic resonance hand fixing device according to claim 1, wherein It further includes a guiding component, which includes a guiding groove and a guiding block that are slidably engaged with each other. The guiding groove extends in the front-rear direction, and one of the guiding groove and the guiding block is provided on the second rack (710), and the other is provided on the base (100).

3. The magnetic resonance hand fixing device according to claim 1, characterized in that, The base (100) is provided with a sliding groove (101), and the moving seat (700) is slidably engaged with the sliding groove (101).

4. A magnetic resonance hand fixation device according to claim 1, characterized in that, The first arc-shaped concave surface (311), the second arc-shaped concave surface (312), and the arc-shaped convex surface (313) are of an integral arc-shaped surface structure.

5. A magnetic resonance hand fixation device according to claim 1, characterized in that, A connecting band (800) is provided at the upper end of the first clamping member (200). The second clamping member (400) is provided with a through hole (810) through which one end of the connecting band (800) can pass. One end of the connecting band (800) is provided with a hook-and-loop fastener surface, and the other end of the connecting band (800) is provided with a hook-and-loop fastener female surface. The hook-and-loop fastener surface can selectively fit with a partial area of the hook-and-loop fastener female surface.

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