Body position auxiliary positioning device for lower limb blood vessel ultrasonic examination

Abstract

The invention belongs to the technical field of medical auxiliary instruments, and discloses a lower limb blood vessel ultrasonic examination body position auxiliary positioning device which comprises a seat, a first piston rod assembly, a second piston rod assembly, a third piston rod assembly, a fourth piston rod assembly, a fourth piston rod assembly and a fifth piston rod assembly, and the first piston rod assembly is arranged at the bottom of the base and used for supporting the backrest; and the positioning assemblies are symmetrically mounted on the base. According to the scheme, a patient sits on the base and leans against the backrest, a medical worker rotates two stop rods to be in a vertical state, the stop rods can drive protruding blocks to extrude an elastic bottom plate to move downwards, the protruding blocks are clamped into through holes, then a first piston rod assembly and a second piston rod assembly are communicated by adjusting an adjusting assembly, and at the moment, the patient slowly lies down; at the moment, the second piston rod assembly and the first piston rod assembly cannot stretch out and draw back and are kept in a fixed state, finally, the legs of the patient are kept in an open trend, and the problem that continuous and clear collection of ultrasonic images is disturbed due to shaking of the lower limbs of the patient during ultrasonic examination is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of medical auxiliary equipment, and in particular relates to a body position auxiliary positioning device for lower limb blood vessel ultrasonic examination. Background Art

[0002] In the medical field, ultrasound examination of lower limb vessels is an extremely important diagnostic method, which is widely used in the screening, diagnosis and follow-up of peripheral vascular diseases.

[0003] For the patient's lower limbs, it is more convenient to test the calf part, which only requires the patient to lie flat or stand normally for testing. However, when testing the femoral artery (vein), deep femoral artery and great saphenous vein, which are located on the inner side of the thigh, the patient is generally required to lie on his back, fully expose the inner thigh, and naturally straighten, abduct and externally rotate the lower limbs to facilitate the placement of the ultrasound probe and the display of the blood vessels. At the same time, the patient is informed of the general process of the examination and the body position to be maintained in order to obtain his cooperation, thereby reducing the inspection error caused by improper body position.

[0004] However, in general, if the lower limbs are naturally extended, abducted, and externally rotated for a long time, the muscles are easily fatigued and sore, making it difficult for patients to maintain a standard posture, resulting in inadvertent limb shaking or position shifting. At the same time, some patients are more sensitive, and the ultrasound probe will also shake or shift in position when it contacts the patient's skin, thereby interfering with the continuous clear acquisition of ultrasound images, resulting in blurry images, double images and other adverse phenomena, increasing the difficulty for medical staff to distinguish vascular details and prolonging the time of a single examination. Therefore, in order to solve the above problems, an auxiliary positioning device for lower limb vascular ultrasound examination is proposed. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides an auxiliary positioning device for lower limb vascular ultrasound examination, which solves the problem that the patient's lower limbs may shake during ultrasound examination and interfere with the continuous and clear acquisition of ultrasound images.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a lower limb vascular ultrasound examination posture auxiliary positioning device, comprising a seat, the seat comprising a base and a backrest hinged thereon, and further comprising: a piston rod assembly 1, which is arranged at the bottom of the base for supporting the backrest; a positioning assembly, which is symmetrically installed on the base; a connecting rod assembly, which is installed on the upper part of the base and located below the positioning assembly; a piston rod assembly 2, which is fixed to the upper part of the base and connected to the piston rod assembly 1; an adjusting assembly, which is arranged at the bottom of the base and located at the connection between the piston rod assembly 1 and the piston rod assembly 2, and is used to adjust the connection and closing of the piston rod assembly 1 and the piston rod assembly 2; Wherein, the base is symmetrically provided with a slide groove 1, a slide groove 2 and a slide groove 3, and the piston rod assembly 1, the piston rod assembly 2 and the adjusting assembly are filled with hydraulic oil; The positioning assembly includes a slider 1 movably connected to the inside of the base, a blocking rod is hinged inside the slider 1, an elastic bottom plate is elastically connected to the bottom of the slider 1, the elastic bottom plate has an upward trend due to its own tension, a protruding block is fixedly connected to one end of the blocking rod, and a convex column is fixedly connected to the bottom of the elastic bottom plate; The connecting rod assembly includes a limiting cross bar fixedly connected to the base, two sliders 2 are movably sleeved on the limiting cross bar, a through hole located directly below the convex column is opened on the slider 2, a connecting rod is hinged at the bottom of the slider 2, a connecting block is hinged at the other end of the connecting rod, and one side of the connecting block is fixedly connected to the output end of the piston rod assembly 2; The blocking rod can be rotated out of the first slide groove and drive the protruding block to rotate and squeeze the elastic bottom plate downward, so that the protruding column is stuck in the through hole. When the blocking rod is in a vertical state, it can slide in the second slide groove.

[0007] Preferably, the inner bearing of the barrier rod is connected to an inner rod, one end of the inner rod extends to the outside of the barrier rod and is fixedly connected to an arc plate, one end of the inner rod is also fixedly connected to a spring, and the outer ring of the spring is fixedly connected to the rod body of the barrier rod; In the initial state, the mainspring is in a compressed state.

[0008] Preferably, a limiting block is fixedly connected to the inner rod, one end of the limiting block extends to the outside of the blocking rod, and when the blocking rod is in a vertical state, the circumferential rotation of the inner rod can drive the limiting block to rotate and get stuck in the sliding groove three.

[0009] Preferably, an outer tube is movably sleeved on the exterior of the baffle rod.

[0010] Preferably, the adjustment assembly comprises a sealing cylinder fixedly mounted on the bottom of the base, an elastic piston is elastically connected inside the sealing cylinder, two through grooves are formed on the elastic piston, and in an initial state, the piston rod assembly 1 and the piston rod assembly 2 are respectively misaligned with the two ends of the two through grooves; Pulling the pull rod drives the elastic piston to move axially, so that the piston rod component 1 is connected with the piston rod component 2 through the two ends of the two through grooves.

[0011] Preferably, the piston rod assembly 1 comprises a sleeve 1 fixedly connected to the base, the sleeve 1 is elastically connected to an elastic piston rod, one end of the elastic piston rod extends to the outside of the sleeve 1 and is fixedly connected to the backrest, the elastic piston rod is arc-shaped, the center of which is the hinge between the base and the backrest, one end of the elastic piston rod is fixedly connected to a pipe 1, the pipe 1 is fixedly connected to a sealing cylinder, and the pipe 1 can be connected to one end of the two through grooves through the sealing cylinder; The sleeve has a tendency to move outwards under its own elastic force, and two groups of indicating arrows are fixedly connected to the pull rod.

[0012] Preferably, the second piston rod assembly includes a second sleeve, a straight piston rod and a second pipe, the straight piston rod is sleeved inside the second sleeve, one end of the straight piston rod extends to the outside of the second sleeve and is fixedly connected to the connecting block, the second pipe is fixedly connected to the second sleeve, and the other end of the second pipe is fixedly connected to the sealing tube, and the second pipe can be connected to the first pipe through two through grooves.

[0013] Preferably, an oil storage assembly is also fixedly connected to the bottom of the base, and the oil storage assembly includes an oil storage tank fixedly connected to the base, and a three-way pipe is fixedly connected to the oil storage tank, one end of the three-way pipe is a pipe opening 1 fixedly connected to the sealing cylinder, and the bottom end of the three-way pipe is a pipe opening 2 and a pipe opening 3 and is connected to the oil storage tank; Pulling the pull rod drives the elastic piston to move and rotate the elastic piston, so that one end of the two through grooves is connected with pipeline one, and the other end is connected with pipe opening one, while pipeline two is blocked by the outer wall of the elastic piston.

[0014] Preferably, a one-way valve is also provided on the three-way pipeline, and the hydraulic oil at the second pipe port can enter the first pipe port through the one-way valve in one direction.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The above scheme is that the patient sits on the base and leans back against the backrest, and the medical staff rotates the two stop rods into a vertical state, and the stop rod drives the protruding block to squeeze the elastic bottom plate downward, and makes the protruding block stuck in the through hole, and then the piston rod assembly 1 is connected with the piston rod assembly 2 by adjusting the adjusting component. At this time, the patient slowly lies down, and the hydraulic oil in the piston rod assembly 1 will enter the piston rod assembly 2 through the adjusting component, and make the output end of the piston rod assembly 2 push the connecting block to move. Under the limit of the limiting cross bar at the same time, the connecting block will push the slider 2 to open outward through the connecting rod, and the slider 2 will also drive the positioning assembly to open as a whole through the cooperation of the through hole and the protruding column, so that the stop rod moves along the slide groove 2 and the stop rod will also open the patient's thigh part, so as to prevent the patient's legs from shaking. Then the operator releases the adjusting component, and at this time the piston rod assembly 2 and the piston rod assembly 1 cannot be retracted and remain in a fixed state. Finally, the patient's legs keep the tendency to open, which solves the problem that the patient's lower limbs may shake during ultrasound examination and interfere with the continuous and clear acquisition of ultrasound images. The above scheme drives the elastic piston to move by pulling the pull rod, so that the elastic piston is connected to pipe 2 and pipe 1 respectively. When the patient leans on the backrest, the positioning assembly can be expanded and the patient's legs can be positioned and supported. When the patient's legs cannot be expanded, the medical staff drives the elastic piston to rotate ninety degrees by rotating the pull rod. At this time, pipe 1 is connected to the oil storage tank through a three-way pipe, while pipe 2 is blocked and cannot be adjusted. At the same time, both ends of the two-way grooves are connected to the oil storage tank through the three-way pipe, and the hydraulic oil inside sleeve 1 enters the oil storage tank through pipe 1, the two-way grooves and the three-way pipe. At this time, the operator can continue to lean on the backrest to make the backrest flat, thereby meeting the applicability of different groups of people. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a front view planar structure schematic diagram of the present invention; Figure 3 It is a schematic diagram of the top plan structure of the present invention; Figure 4 It is a front cross-sectional structural schematic diagram of the present invention; Figure 5 It is a bottom view structural schematic diagram of the connecting rod assembly of the present invention; Figure 6 It is a partial cross-sectional structural schematic diagram of a slider 1 of the present invention; Figure 7 It is a partial cross-sectional structural schematic diagram of the baffle rod of the present invention; Figure 8 for Figure 3 Schematic diagram of the structure at AA in the middle; Fig. 9 It is a schematic diagram of the matching structure of the piston rod assembly 1 and the piston rod assembly 2 of the present invention; Fig.10 Fig. 9 Enlarged view of point B in the middle.

[0017] In the figure: 1, seat; 11, base; 111, slide 1; 112, slide 2; 113, slide 3; 12, backrest; 2, piston rod assembly 1; 21, sleeve 1; 22, elastic piston rod; 23, pipe 1; 3, positioning assembly; 31, slider 1; 32, stopper; 321, raised block; 322, curved plate; 323, inner rod; 324, limit block; 325, outer tube; 326, spring; 33, elastic bottom plate; 331, boss; 4, connecting rod assembly; 4 1. Limiting cross bar; 42. Slider 2; 421. Through hole; 43. Connecting rod; 44. Connecting block; 5. Piston rod assembly 2; 51. Sleeve 2; 52. Straight piston rod; 53. Pipe 2; 6. Adjusting assembly; 61. Sealing cylinder; 62. Elastic piston; 63. Two-way grooves; 64. Pull rod; 641. Indicating arrow; 7. Oil storage assembly; 71. Oil storage tank; 72. Three-way pipeline; 721. Pipe outlet 1; 722. Pipe outlet 2; 723. Pipe outlet 3; 724. One-way valve. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0019] like Figures 1 to 10 As shown, the present invention provides a lower limb vascular ultrasound examination posture auxiliary positioning device, including a seat 1, the seat 1 includes a base 11 and a backrest 12 hinged thereon, and also includes: a piston rod assembly 1 2, which is arranged at the bottom of the base 11 for supporting the backrest 12; a positioning assembly 3, which is symmetrically installed on the base 11; a connecting rod assembly 4, which is installed on the upper part of the base 11 and located below the positioning assembly 3; a piston rod assembly 2 5, which is fixed to the upper part of the base 11 and connected to the piston rod assembly 1 2; an adjustment assembly 6, which is arranged at the bottom of the base 11 and located at the connection between the piston rod assembly 1 2 and the piston rod assembly 2 5, and is used to adjust the connection and closing of the piston rod assembly 1 2 and the piston rod assembly 2 5; Among them, the base 11 is symmetrically provided with a slide groove 111, a slide groove 2 112 and a slide groove 3 113, and the piston rod assembly 1 2, the piston rod assembly 2 5 and the adjustment assembly 6 are filled with hydraulic oil; The positioning assembly 3 includes a slider 31 movably connected to the inside of the base 11, a stopper 32 is hinged inside the slider 31, an elastic bottom plate 33 is elastically connected to the bottom of the slider 31, the elastic bottom plate 33 has an upward trend due to its own tension, a protrusion 321 is fixedly connected to one end of the stopper 32, and a convex column 331 is fixedly connected to the bottom of the elastic bottom plate 33; The connecting rod assembly 4 includes a limiting cross bar 41 fixed to the base 11, and two sliders 42 are movably sleeved on the limiting cross bar 41. The sliders 42 are provided with through holes 421 located directly below the protruding pillars 331. A connecting rod 43 is hinged at the bottom of the slider 42, and a connecting block 44 is hinged at the other end of the connecting rod 43. One side of the connecting block 44 is fixedly connected to the output end of the piston rod assembly 5. The blocking rod 32 can be rotated out from the first slide groove 111 and drive the protruding block 321 to rotate and squeeze the elastic bottom plate 33 downward, so that the protruding column 331 is stuck in the through hole 421. When the blocking rod 32 is in a vertical state, it can slide in the second slide groove 112; The adjustment assembly 6 includes a sealing cylinder 61 fixedly mounted on the bottom of the base 11, an elastic piston 62 is elastically connected inside the sealing cylinder 61, and two through grooves 63 are formed on the elastic piston 62. In the initial state, the piston rod assembly 1 2 and the piston rod assembly 2 5 are respectively misaligned with the two ends of the two through grooves 63; Pulling the pull rod 64 drives the elastic piston 62 to move axially so that the piston rod assembly 1 2 is connected to the piston rod assembly 2 5 through the two ends of the two through grooves 63 .

[0020] With the above solution, the patient sits on the base 11 and leans against the backrest 12, and the medical staff rotates the two blocking rods 32 into a vertical state. The blocking rods 32 will drive the protruding blocks 321 to squeeze the elastic bottom plate 33 downward, and make the protruding blocks 321 snap into the through holes 421. Then, the piston rod assembly 1 2 is connected to the piston rod assembly 2 5 by adjusting the adjusting assembly 6. At this time, the patient slowly lies down, and the hydraulic oil in the piston rod assembly 1 2 will enter the piston rod assembly 2 5 through the adjusting assembly 6, and make the output end of the piston rod assembly 2 5 push the connecting block 44 to move. At the same time, under the limit of the limiting cross bar 41, the connecting block 44 will The connecting rod 43 pushes the slider 2 42 outward, and the slider 2 42 also drives the positioning assembly 3 to be expanded as a whole through the cooperation of the through hole 421 and the boss 331, so that the blocking rod 32 moves along the slide groove 2 112 and the blocking rod 32 also spreads the patient's thigh part, thereby preventing the patient's legs from shaking. Then the operator releases the adjustment assembly 6. At this time, the piston rod assembly 2 5 and the piston rod assembly 1 2 cannot be extended and remain in a fixed state. Finally, the patient's legs maintain a tendency to be stretched out, which solves the problem that the patient's lower limbs may shake during ultrasound examination and interfere with the continuous and clear acquisition of ultrasound images.

[0021] As 5- Figure 8 As shown, the inner bearing of the blocking rod 32 is connected to the inner rod 323, one end of the inner rod 323 extends to the outside of the blocking rod 32 and is fixedly connected to the arc plate 322, and one end of the inner rod 323 is also fixedly connected to a spring 326, and the outer ring of the spring 326 is fixedly connected to the rod body of the blocking rod 32; in the initial state, the spring 326 is in a compressed state; The inner rod 323 is also fixedly connected to a limit block 324, one end of which extends to the outside of the blocking rod 32. When the blocking rod 32 is in a vertical state, the inner rod 323 rotates circumferentially to drive the limit block 324 to rotate and snap into the third slide groove 113; By adopting the above scheme, when the arc plate 322 is separated from the seat 1 and rotated to open, it can limit the patient's thigh in the vertical direction, preventing the patient's legs from tilting upward when stretched out.

[0022] like Figure 6-Figure 8 As shown, an outer sleeve 325 is movably sleeved on the outer portion of the blocking rod 32 .

[0023] With the above solution, when the patient's legs are stretched apart by the blocking rod 32 , the outer cylinder 325 contacts the patient's legs and rotates outside the blocking rod 32 , thereby preventing the patient's legs from being rubbed against the blocking rod 32 and causing abrasions on the patient's legs.

[0024] like Figure 1-Figure 4 , Fig. 9 and Fig.10 As shown, the piston rod assembly 2 includes a sleeve 21 fixedly connected to the base 11, and an elastic piston rod 22 is elastically connected to the sleeve 21. One end of the elastic piston rod 22 extends to the outside of the sleeve 21 and is fixedly connected to the backrest 12. The elastic piston rod 22 is arc-shaped, and its center is the hinge between the base 11 and the backrest 12. One end of the elastic piston rod 22 is fixedly connected to a pipe 23, and the pipe 23 is fixedly connected to the sealing cylinder 61. The pipe 23 can be connected to one end of the two through grooves 63 through the sealing cylinder 61; The sleeve 21 has a tendency to move outward due to its own elastic force, and two groups of indicating arrows 641 are fixedly connected to the pull rod 64; The piston rod assembly 2 5 comprises a sleeve 2 51, a straight piston rod 52 and a pipe 2 53. The straight piston rod 52 is sleeved inside the sleeve 2 51. One end of the straight piston rod 52 extends to the outside of the sleeve 2 51 and is fixedly connected to the connecting block 44. The pipe 2 53 is fixedly connected to the sleeve 2 51, and the other end of the pipe 2 53 is fixedly connected to the sealing cylinder 61. The pipe 2 53 can be connected to the pipe 1 23 through two through grooves 63. The bottom of the base 11 is also fixedly connected to an oil storage assembly 7, which includes an oil storage tank 71 fixedly connected to the base 11, and a three-way pipe 72 is fixedly connected to the oil storage tank 71, one end of the three-way pipe 72 is a pipe opening 1 721 and is fixedly connected to the sealing cylinder 61, and the bottom end of the three-way pipe 72 is a pipe opening 2 722 and a pipe opening 3 723 and is connected to the oil storage tank 71; Pulling the pull rod 64 drives the elastic piston 62 to move and rotate the elastic piston 62, so that one end of the two through grooves 63 is connected to the pipe 1 23, and the other end is connected to the pipe opening 1 721, and the pipe 2 53 is blocked by the outer wall of the elastic piston 62; By adopting the above scheme, the elastic piston 62 is driven to move by pulling the pull rod 64, so that the elastic piston 62 is connected with the pipe 2 53 and the pipe 1 23 respectively. When the patient leans on the backrest 12, the positioning assembly 3 can be opened and the patient's legs can be positioned and supported. When the patient's legs cannot be opened, the medical staff drives the elastic piston 62 to rotate ninety degrees by rotating the pull rod 64. At this time, the pipe 1 23 is connected to the oil storage tank 71 through the three-way pipe 72, and the pipe 2 53 is blocked and cannot be adjusted. At the same time, the two ends of the two-way groove 63 are connected to the oil storage tank 71 through the three-way pipe 72, and the hydraulic oil inside the sleeve 1 21 enters the oil storage tank 71 through the pipe 1 23, the two-way groove 63 and the three-way pipe 72. At this time, the operator can continue to lean on the backrest 12 to make the backrest 12 flat, thereby meeting the applicability of different groups of people.

[0025] like Figure 1 , Figure 2 , Fig. 9 and Fig.10 As shown, a one-way valve 724 is also provided on the three-way pipe 72, and the hydraulic oil at the second pipe port 722 can enter the first pipe port 721 through the one-way valve 724 in one direction; By adopting the above scheme, when the hydraulic oil inside the piston rod assembly 2 enters the oil storage tank 71 through the three-way pipe 72, the hydraulic oil enters through the two-way groove 63 and the pipe mouth 1 721 and is input into the oil storage tank 71 through the pipe mouth 3 723. At this time, the pipe mouth 2 722 cannot input the hydraulic oil into the oil storage tank 71 through the pipe mouth 2 722 due to the obstruction of the one-way valve 724, thereby reducing the flow rate of the hydraulic oil input from the piston rod assembly 2 to the oil storage tank 71 through the three-way pipe 72, thereby achieving the effect of slowing down the tilting speed of the backrest 12.

[0026] The working principle and use process of the present invention: First, the patient sits on the base 11 and leans against the backrest 12. The medical staff rotates the two blocking rods 32 to a vertical state. The blocking rods 32 will drive the protruding blocks 321 to squeeze the elastic bottom plate 33 downward, and make the protruding blocks 321 snap into the through holes 421. Then, the piston rod assembly 1 2 is connected to the piston rod assembly 2 5 by adjusting the adjusting assembly 6. At this time, the patient slowly lies down, and the hydraulic oil in the piston rod assembly 1 2 will enter the piston rod assembly 2 5 through the adjusting assembly 6, and make the output end of the piston rod assembly 2 5 push the connecting block 44 to move. When the position-limiting cross bar 41 is limited, the connecting block 44 will push the slider 2 42 outward through the connecting rod 43, and the slider 2 42 will also drive the positioning assembly 3 to be expanded as a whole through the cooperation between the through hole 421 and the protruding column 331, so that the blocking rod 32 moves along the second slide groove 112 and the blocking rod 32 will also partially expand the patient's thigh, thereby preventing the patient's legs from shaking. Then the operator releases the adjustment assembly 6, and at this time the piston rod assembly 2 5 and the piston rod assembly 1 2 cannot be extended and remain in a fixed state. Finally, the patient's legs maintain a tendency to be expanded; The elastic piston 62 is driven to move by pulling the pull rod 64, so that the elastic piston 62 is connected to the pipe 2 53 and the pipe 1 23 respectively. At this time, when the patient leans on the backrest 12, the positioning assembly 3 can be opened and the patient's legs can be positioned and supported. When the patient's legs cannot be opened, the medical staff drives the elastic piston 62 to rotate ninety degrees by rotating the pull rod 64. At this time, the pipe 1 23 is connected to the oil storage tank 71 through the three-way pipe 72, and the pipe 2 53 is blocked and cannot be adjusted. At the same time, the two ends of the two-way groove 63 are connected to the oil storage tank 71 through the three-way pipe 72, and the hydraulic oil inside the sleeve 1 21 enters the oil storage tank 71 through the pipe 1 23, the two-way groove 63 and the three-way pipe 72. At this time, the operator can continue to lean on the backrest 12 to make the backrest 12 flat; During the process of the hydraulic oil inside the piston rod assembly 2 entering the oil storage tank 71 through the three-way pipe 72, the hydraulic oil enters through the two-way groove 63 and the pipe mouth 1 721 and is input into the oil storage tank 71 through the pipe mouth 3 723. At this time, the pipe mouth 2 722 cannot input the hydraulic oil into the oil storage tank 71 through the pipe mouth 2 722 due to the obstruction of the one-way valve 724, thereby reducing the flow rate of the hydraulic oil input from the piston rod assembly 2 to the oil storage tank 71 through the three-way pipe 72, thereby achieving the effect of slowing down the tilting speed of the backrest 12.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A body position auxiliary positioning device for lower limb vascular ultrasound examination, comprising a seat (1), wherein the seat (1) comprises a base (11) and a backrest (12) hinged thereto, characterized in that: Also includes: A piston rod assembly (2) disposed at the bottom of the base (11) for supporting a backrest (12); A positioning assembly (3) symmetrically mounted on the base (11); A connecting rod assembly (4) mounted on the upper portion of the base (11) and located below the positioning assembly (3); A second piston rod assembly (5) is fixedly connected to the upper portion of the base (11) and is in communication with the first piston rod assembly (2); An adjustment component (6) is arranged at the bottom of the base (11) and located at the connection point between the piston rod component 1 (2) and the piston rod component 2 (5) and is used to adjust the connection or closing of the piston rod component 1 (2) and the piston rod component 2 (5); The base (11) is symmetrically provided with a slide groove 1 (111), a slide groove 2 (112) and a slide groove 3 (113), and the piston rod assembly 1 (2), the piston rod assembly 2 (5) and the adjustment assembly (6) are all filled with hydraulic oil; The positioning assembly (3) comprises a slider (31) movably connected to the inside of the base (11), a blocking rod (32) being hinged inside the slider (31), an elastic bottom plate (33) being elastically connected to the bottom of the slider (31), the elastic bottom plate (33) having an upward tendency under its own tension, a protruding block (321) being fixedly connected to one end of the blocking rod (32), and a convex column (331) being fixedly connected to the bottom of the elastic bottom plate (33); The connecting rod assembly (4) comprises a limiting cross bar (41) fixedly connected to the base (11); two sliding blocks (42) are movably sleeved on the limiting cross bar (41); a through hole (421) is provided on the sliding block (42) and is located directly below the convex column (331); a connecting rod (43) is hingedly connected to the bottom of the sliding block (42); a connecting block (44) is hingedly connected to the other end of the connecting rod (43); and one side of the connecting block (44) is fixedly connected to the output end of the piston rod assembly (5); The blocking rod (32) can be rotated out from the first slide groove (111) and drive the protruding block (321) to rotate and squeeze the elastic bottom plate (33) downward, so that the protruding column (331) is inserted into the through hole (421). When the blocking rod (32) is in a vertical state, it can slide in the second slide groove (112).

2. The lower limb vascular ultrasound examination position auxiliary positioning device according to claim 1, characterized in that: The inner bearing of the blocking rod (32) is connected to an inner rod (323), one end of the inner rod (323) extends to the outside of the blocking rod (32) and is fixedly connected to an arc-shaped plate (322), one end of the inner rod (323) is also fixedly connected to a spring (326), and the outer end of the spring (326) is fixedly connected to the rod body of the blocking rod (32); In the initial state, the mainspring (326) is in a compressed state.

3. The lower limb vascular ultrasound examination position auxiliary positioning device according to claim 2, characterized in that: A limit block (324) is also fixedly connected to the inner rod (323), and one end of the limit block (324) extends to the outside of the blocking rod (32). When the blocking rod (32) is in a vertical state, the inner rod (323) can rotate in a circumferential direction to drive the limit block (324) to rotate and snap into the third slide groove (113).

4. The lower limb vascular ultrasound examination body position auxiliary positioning device according to claim 1, characterized in that: An outer tube (325) is also movably sleeved on the exterior of the blocking rod (32).

5. The lower limb vascular ultrasound examination position auxiliary positioning device according to claim 1, characterized in that: The adjustment assembly (6) comprises a sealing cylinder (61) fixedly mounted on the bottom of the base (11); an elastic piston (62) is elastically connected to the inside of the sealing cylinder (61); two through grooves (63) are formed on the elastic piston (62); in an initial state, the piston rod assembly 1 (2) and the piston rod assembly 2 (5) are respectively misaligned with the two ends of the two through grooves (63); Pulling the pull rod (64) drives the elastic piston (62) to move axially, so that the piston rod assembly (2) is connected to the piston rod assembly (5) through the two ends of the two through grooves (63).

6. The lower limb vascular ultrasound examination position auxiliary positioning device according to claim 5, characterized in that: The piston rod assembly (2) comprises a sleeve (21) fixedly connected to the base (11), an elastic piston rod (22) being elastically connected to the sleeve (21), one end of the elastic piston rod (22) extending to the outside of the sleeve (21) and being fixedly connected to the backrest (12), the elastic piston rod (22) being arc-shaped, the center of which is the hinge between the base (11) and the backrest (12), one end of the elastic piston rod (22) being fixedly connected to a pipe (23), the pipe (23) being fixedly connected to the sealing cylinder (61), and the pipe (23) being able to communicate with one end of the two through grooves (63) through the sealing cylinder (61); The sleeve 1 (21) has a tendency to move outwards due to its own elastic force, and two groups of indicating arrows (641) are fixedly connected to the pull rod (64).

7. The lower limb vascular ultrasound examination body position auxiliary positioning device according to claim 6, characterized in that: The piston rod assembly 2 (5) comprises a sleeve 2 (51), a straight piston rod (52) and a pipe 2 (53). The straight piston rod (52) is sleeved inside the sleeve 2 (51). One end of the straight piston rod (52) extends to the outside of the sleeve 2 (51) and is fixedly connected to the connecting block (44). The pipe 2 (53) is fixedly connected to the sleeve 2 (51), and the other end of the pipe 2 (53) is fixedly connected to the sealing cylinder (61). The pipe 2 (53) can be connected to the pipe 1 (23) through two through grooves (63).

8. The lower limb vascular ultrasound examination position auxiliary positioning device according to claim 7, characterized in that: The bottom of the base (11) is also fixedly connected to an oil storage assembly (7), the oil storage assembly (7) comprising an oil storage tank (71) fixedly connected to the base (11), the oil storage tank (71) being fixedly connected to a three-way pipe (72), one end of the three-way pipe (72) being a pipe opening 1 (721) and being fixedly connected to the sealing cylinder (61), the bottom end of the three-way pipe (72) being a pipe opening 2 (722) and a pipe opening 3 (723) and being connected to the oil storage tank (71); Pulling the pull rod (64) drives the elastic piston (62) to move and rotate the elastic piston (62), so that one end of the two through grooves (63) is connected to the first pipe (23), and the other end is connected to the first pipe opening (721), while the second pipe (53) is blocked by the outer wall of the elastic piston (62).

9. The lower limb vascular ultrasound examination body position auxiliary positioning device according to claim 8, characterized in that: The three-way pipeline (72) is also provided with a one-way valve (724), and the hydraulic oil at the second pipe opening (722) can enter the first pipe opening (721) in one direction through the one-way valve (724).

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