A kind of auxiliary support for ultrasound-guided PICC puncture

Abstract

The application belongs to the technical field of medical auxiliary support, and particularly relates to an auxiliary support for PICC puncture under ultrasonic guidance, which comprises an ultrasonic probe and a fixing base plate, a fixing mechanism is arranged above the fixing base plate, the fixing mechanism is used for restraining and fixing a small arm of a patient, and a straightening mechanism is arranged between the fixing base plate and the fixing mechanism. The small arm of the patient is locked and fixed through the fixing mechanism, so that the rotation of the arm of the patient during puncture is prevented, then the end of the small arm close to the elbow joint of the patient is slightly raised through the straightening mechanism, so that the whole arm of the patient is passively in a straightened state, and during the puncture process of the blood vessel on the large arm of the patient, the arm of the patient is not prone to bending, and the whole process does not cause compression to the large arm of the patient, so that the blood vessel on the large arm of the patient is fully exposed.

Description

Technical Field

[0001] This invention relates to the field of medical auxiliary stent technology, and in particular to an auxiliary stent for ultrasound-guided PICC puncture. Background Technology

[0002] PICC (Peripherally Inserted Central Venous Catheters) involves inserting a catheter through a vein in the arm and directing it to a large vein near the heart. This avoids direct contact between chemotherapy drugs and the arm veins. Furthermore, the rapid blood flow in the large vein quickly dilutes the chemotherapy drugs, preventing irritation to the blood vessels. Therefore, it effectively protects the veins of the upper limb, reduces the incidence of phlebitis, alleviates patient pain, and improves the patient's quality of life.

[0003] PICC placement under the guidance of an ultrasound probe is a common method for nurses to insert catheters. By changing the traditional PICC puncture site from the elbow crease to the upper arm, the incidence of phlebitis is greatly reduced.

[0004] During the puncture, the patient's arm needs to be kept straight. This allows the blood vessels in the upper arm to be fully exposed, making it easier and more accurate for the puncture needle and catheter to enter the blood vessels, reducing damage to the inner wall of the blood vessels. However, during the puncture, the patient will inevitably bend their straight arm due to stimulation, which will affect the normal progress of the puncture. In addition, medical staff inevitably experience tension during the initial puncture procedure, which can easily lead to hand tremors when holding the puncture needle, making it impossible to accurately puncture the puncture point on the arm. Therefore, an auxiliary stent for ultrasound-guided PICC puncture is proposed. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, this invention proposes an auxiliary stent for ultrasound-guided PICC puncture.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an auxiliary support for ultrasound-guided PICC puncture, comprising an ultrasound probe and a fixing base plate, wherein a fixing mechanism is provided above the fixing base plate, the fixing mechanism being used to constrain and fix the patient's forearm, and a straightening mechanism is provided between the fixing base plate and the fixing mechanism, the straightening mechanism being used to adjust the angle of the fixing mechanism, thereby causing the fixing mechanism to tilt up towards the side of the patient's upper arm, thus keeping the patient's entire arm in a straight state; a multi-axis mechanism is also provided at the top of the fixing base plate, on which a puncture needle body is detachably mounted, the multi-axis mechanism being used to reduce the vibration transmitted to the puncture needle body when medical personnel perform puncture work.

[0007] Preferably, the fixing mechanism includes a swing plate, which is connected to the fixed base plate by a hinge. An arc-shaped plate is fixedly installed on the top of the swing plate, and a cushioning pad is detachably installed on the top of the arc-shaped plate. The cushioning pad is open, and two buckles are fixedly installed on both sides of the cushioning pad. Two buckles facing each other have the same second constraint band, and the other two buckles facing each other have the same first constraint band. The swing plate, the arc-shaped plate, and the cushioning pad are all located within the first and second constraint bands.

[0008] Preferably, the straightening mechanism includes a base fixed to the top of the fixed base plate and a rotating plate slidably installed on the bottom of the swing plate. The top of the base is fixedly installed with a first protrusion and a second protrusion. The same screw is rotatably installed through the first protrusion and the second protrusion. Two rotating blocks are rotatably installed on both sides of the base and are coaxially arranged. The tops of the two rotating blocks are fixedly connected to the rotating plate.

[0009] Preferably, a hinge block is fixedly installed at the bottom of the rotating plate, a threaded cylinder is threaded onto the screw, the hinge block and the threaded cylinder are hinged to the same swing arm, and a reduction motor is fixedly installed on the side of the second protrusion away from the first protrusion, and the output shaft of the reduction motor is fixedly connected to the end of the screw.

[0010] Preferably, a slide rail is fixedly installed at the bottom of the swing plate, and a slider is slidably sleeved on the slide rail, the slider being fixedly connected to the top of the rotating plate.

[0011] Preferably, the multi-axis mechanism includes a first rotating seat fixedly connected to the top of the fixed base plate, a second rotating seat connected to the first rotating seat with damping, the first rotating seat and the second rotating seat being arranged perpendicularly, a prism connected to the top of the first rotating seat with damping, a rectangular block connected to the prism with damping sliding, a rotating shaft fixedly connected to the side of the rectangular block near the fixed mechanism, and a shaft seat connected to the rotating shaft with damping rotatability.

[0012] Preferably, a first disc is fixedly installed on the top of the bearing seat, a second disc is rotatably connected to the top of the first disc with damping, a sleeve is fixedly installed on the top of the second disc, and the main body of the puncture needle moves through the sleeve.

[0013] Preferably, the rotation center line of the bearing seat and the rotation center line of the second disk are arranged perpendicularly, and the rotation center line of the bearing seat and the rotation center line of the prism are arranged parallel.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention uses a fixing mechanism to lock and fix the patient's forearm, which can prevent the patient's arm from rotating during puncture. Then, the straightening mechanism can slightly raise the end of the patient's forearm near the elbow joint, so that the patient's entire arm is passively straightened. Then, during the puncture of the blood vessels in the patient's upper arm, the patient's arm is not easy to bend, and the whole process will not put pressure on the patient's upper arm, allowing the blood vessels in the patient's upper arm to be fully exposed.

[0015] 2. During puncture, this device allows the patient's arm to be straightened and abducted (at a 90-degree angle to the body), which can fully expose the blood vessel, reduce bending, and make it easier for medical staff to find the most ideal and straight blood vessel. This makes it easier and more accurate for the puncture needle to enter the blood vessel, reducing damage to the inner wall of the blood vessel.

[0016] 3. When medical staff hold the puncture needle body to perform puncture, the puncture needle body needs to pass through the sleeve. Since the components on the multi-axis mechanism are all damped, the multi-axis mechanism can reduce the vibration transmitted from the medical staff's hand to the puncture needle body. By reducing the vibration of the puncture needle body, the puncture accuracy of the puncture needle body can be improved. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an auxiliary stent for ultrasound-guided PICC puncture proposed in this invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of an auxiliary stent for ultrasound-guided PICC puncture proposed in this invention. Figure 2 ; Figure 3 This is a schematic diagram of the fixed base plate, fixed mechanism and straightening mechanism in an auxiliary stent for ultrasound-guided PICC puncture proposed in this invention; Figure 4 This is a schematic diagram of the fixation mechanism in an auxiliary stent for ultrasound-guided PICC puncture proposed in this invention; Figure 5This is a schematic diagram of the tautness mechanism in an auxiliary stent for ultrasound-guided PICC puncture proposed in this invention; Figure 6 This is a schematic diagram of the multi-axis mechanism in an auxiliary stent for ultrasound-guided PICC puncture proposed in this invention.

[0018] In the diagram: 1. Ultrasonic probe; 2. Fixed base plate; 3. Fixing mechanism; 4. Straightening mechanism; 5. Multi-axis mechanism; 6. Puncture needle body; 31. Swing plate; 32. Hinge; 33. Curved plate; 34. Cushion pad; 35. Buckle; 36. Restraint strap one; 37. Restraint strap two; 38. Slide rail; 39. Slider; 41. Base; 42. Protrusion 1; 43. Protrusion 2; 44. Screw; 45. Rotating block; 46. Rotating plate; 47. Hinge block; 48. Threaded cylinder; 49. Swing arm; 410. Gear motor; 51. Rotating seat one; 52. Rotating seat two; 53. Prism; 54. Rectangular block; 55. Rotating shaft; 56. Shaft seat; 57. Disk one; 58. Disk two; 59. Sleeve. Detailed Implementation

[0019] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please refer to Figure 1 - Figure 6 This invention provides a technical solution: an auxiliary support for ultrasound-guided PICC puncture, comprising an ultrasound probe 1 and a fixing base plate 2. A fixing mechanism 3 is provided above the fixing base plate 2, which is used to restrain and fix the patient's forearm. A straightening mechanism 4 is provided between the fixing base plate 2 and the fixing mechanism 3, which is used to adjust the angle of the fixing mechanism 3. By tilting the fixing mechanism 3 towards the patient's upper arm, the patient's entire arm is kept straight. A multi-axis mechanism 5 is also provided at the top of the fixing base plate 2. A puncture needle body 6 is detachably mounted on the multi-axis mechanism 5. The multi-axis mechanism 5 is used to reduce the vibration transmitted to the puncture needle body 6 when medical staff perform puncture.

[0021] The fixing mechanism 3 includes a swing plate 31, which is connected to the fixed base plate 2 by a hinge 32. An arc-shaped plate 33 is fixedly installed on the top of the swing plate 31. A cushioning pad 34 is detachably installed on the top of the arc-shaped plate 33. The cushioning pad 34 is open. Two buckles 35 are fixedly installed on both sides of the cushioning pad 34. The two buckles 35 facing each other are provided with the same second constraint band 37. The other two buckles 35 facing each other are provided with the same first constraint band 36. The swing plate 31, the arc-shaped plate 33 and the cushioning pad 34 are all located within the first constraint band 36 and the second constraint band 37.

[0022] The straightening mechanism 4 includes a base 41 fixed to the top of the fixed base plate 2 and a rotating plate 46 slidably installed on the bottom of the swing plate 31. The top of the base 41 is fixedly installed with a first protrusion 42 and a second protrusion 43. The same screw 44 is rotatably installed through the first protrusion 42 and the second protrusion 43. Two rotating blocks 45 are rotatably installed on both sides of the base 41 and are coaxially arranged. The tops of the two rotating blocks 45 are fixedly connected to the rotating plate 46.

[0023] A hinge block 47 is fixedly installed at the bottom of the rotating plate 46. A threaded cylinder 48 is threaded on the screw 44. The same swing arm 49 is hinged on the hinge block 47 and the threaded cylinder 48. A reduction motor 410 is fixedly installed on the side of the second protrusion 43 away from the first protrusion 42. The output shaft of the reduction motor 410 is fixedly connected to the end of the screw 44.

[0024] A slide rail 38 is fixedly installed at the bottom of the swing plate 31, and a slider 39 is slidably sleeved on the slide rail 38. The slider 39 is fixedly connected to the top of the rotating plate 46.

[0025] Furthermore, when the rotating plate 46 rotates around the hinge 32, the slider 39 will slide on the slide rail 38.

[0026] The multi-axis mechanism 5 includes a rotating seat 51 fixedly connected to the top of the fixed base plate 2. A rotating seat 52 is connected to the rotating seat 51 with damping. The rotating seat 51 and the rotating seat 52 are arranged vertically. A prism 53 is connected to the rotating seat 51 with damping. A rectangular block 54 is connected to the prism 53 with damping sliding. A rotating shaft 55 is fixedly connected to the side of the rectangular block 54 near the fixed mechanism 3. A shaft seat 56 is connected to the rotating shaft 55 with damping rotatability.

[0027] A disc 57 is fixedly mounted on the top of the bearing 56. A disc 58 is connected to the top of the disc 57 with damping rotation. A sleeve 59 is fixedly mounted on the top of the disc 58. The puncture needle body 6 moves through the sleeve 59.

[0028] The rotation center line of the bearing seat 56 is perpendicular to the rotation center line of the disk 58, and the rotation center line of the bearing seat 56 is parallel to the rotation center line of the prism 53.

[0029] Furthermore, since all rotating parts in the multi-axis mechanism 5 are damped connections, and the sliding between the prism 53 and the rectangular block 54 is also a damped connection, the vibration transmitted from the puncture needle body 6 can be effectively counteracted. When medical personnel hold the puncture needle body 6 for puncture, even if the medical personnel's hands shake, the impact on the puncture needle body 6 can be minimized, ensuring that the puncture needle body 6 can accurately puncture the puncture point.

[0030] Furthermore, such as Figure 6 As shown, the rotating seat 52 can swing in the Y direction with the rotating seat 51 as the center, the prism 53 can swing in the Z direction with the rotating seat 52 as the center, the rectangular block 54 can move along the axis of the prism 53, the shaft seat 56 can swing in the X direction with the axis of the rotating shaft 55 as the center, and the sleeve 59 can swing with the disc 58 as the center. By enabling the sleeve 59 to move in multiple axes, it is ensured that the puncture needle body 6 can be punctured at any point on the patient's upper arm.

[0031] In this embodiment: When using, the patient lies flat on the hospital bed, and then the device is placed flat on the hospital bed, with the patient's arm to be punctured at a right angle to the body and the patient's palm facing up. Then, the forearm of the patient's arm to be punctured is placed in the cushioning cotton pad 34. Then, the patient's forearm is fixed by locking restraint strap 1 36 and restraint strap 2 37, with restraint strap 2 37 adjacent to the patient's elbow joint and restraint strap 1 36 adjacent to the patient's wrist joint. Then, the reduction motor 410 is started. The reduction motor 410 rotates and drives the screw 44 to rotate. The rotation of the screw 44 drives the threaded cylinder 48 to move toward the protrusion 42. The moving threaded cylinder 48 pushes the hinge block 47 through the swing arm 49. The hinge block 47 then pushes the rotating plate 46 to rotate around the two rotating blocks 45 and tilt up. During the tilting process, the rotating plate 46 will drive the swing plate 31 to rotate around the hinge 32, thereby causing the entire fixing mechanism 3 to tilt up on the side close to the patient's elbow joint. By slightly tilting the patient's forearm close to the elbow joint, the patient's entire arm can be kept straight and perpendicular to the body. Afterwards, medical staff use an ultrasound probe 1 to locate the blood vessel to be punctured on the patient's upper arm. Then, the staff holds the puncture needle body 6, which passes through the sleeve 59, and punctures the blood vessel.

[0032] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An auxiliary stent for ultrasound-guided PICC puncture, comprising an ultrasound probe (1) and a fixing base plate (2), characterized in that: A fixing mechanism (3) is provided above the fixing base plate (2). The fixing mechanism (3) is used to restrain and fix the patient's forearm. A straightening mechanism (4) is provided between the fixing base plate (2) and the fixing mechanism (3). The straightening mechanism (4) is used to adjust the angle of the fixing mechanism (3). By tilting the fixing mechanism (3) closer to the patient's upper arm, the patient's entire arm is kept straight. A multi-axis mechanism (5) is also provided at the top of the fixing base plate (2). A puncture needle body (6) is detachably installed on the multi-axis mechanism (5). The multi-axis mechanism (5) is used to reduce the vibration transmitted to the puncture needle body (6) when medical staff perform puncture work. The fixing mechanism (3) includes a swing plate (31), which is connected to the fixed base plate (2) by a hinge (32). An arc plate (33) is fixedly installed on the top of the swing plate (31), and a cushioning pad (34) is detachably installed on the top of the arc plate (33). The cushioning pad (34) is open, and two buckles (35) are fixedly installed on both sides of the cushioning pad (34). The two buckles (35) facing each other are provided with the same second constraint band (37), and the other two buckles (35) facing each other are provided with the same first constraint band (36). The swing plate (31), the arc plate (33), and the cushioning pad (34) are all located within the first constraint band (36) and the second constraint band (37). The straightening mechanism (4) includes a base (41) fixed to the top of the fixed base plate (2) and a rotating plate (46) slidably installed on the bottom of the swing plate (31). The top of the base (41) is fixedly installed with a protrusion one (42) and a protrusion two (43). The same screw (44) is rotatably installed through the protrusion one (42) and the protrusion two (43). Two rotating blocks (45) are rotatably installed on both sides of the base (41) and are coaxially arranged. The tops of the two rotating blocks (45) are fixedly connected to the rotating plate (46). A hinge block (47) is fixedly installed at the bottom of the rotating plate (46), and a threaded cylinder (48) is threaded onto the screw (44). The hinge block (47) and the threaded cylinder (48) are hinged together by the same swing arm (49). A reduction motor (410) is fixedly installed on the side of the second protrusion (43) away from the first protrusion (42). The output shaft of the reduction motor (410) is fixedly connected to the end of the screw (44). The bottom of the swing plate (31) is fixedly installed with a slide rail (38), and a slider (39) is slidably sleeved on the slide rail (38). The slider (39) is fixedly connected to the top of the rotating plate (46). The multi-axis mechanism (5) includes a rotating seat one (51) fixedly connected to the top of the fixed base plate (2), a rotating seat two (52) being damped and rotatably connected to the rotating seat one (51), the rotating seat one (51) and the rotating seat two (52) being vertically arranged, a prism (53) being damped and rotatably connected above the rotating seat one (51), a rectangular block (54) being damped and slidably connected to the prism (53), a rotating shaft (55) being fixedly connected to the side of the rectangular block (54) near the fixed mechanism (3), and a shaft seat (56) being damped and rotatably connected to the rotating shaft (55). The top of the bearing seat (56) is fixedly mounted with a disc one (57), the top of the disc one (57) is damped and rotatably connected with a disc two (58), the top of the disc two (58) is fixedly mounted with a sleeve (59), and the puncture needle body (6) moves through the sleeve (59).

2. The auxiliary stent for ultrasound-guided PICC puncture according to claim 1, characterized in that: The rotation center line of the bearing seat (56) is perpendicular to the rotation center line of the second disk (58), and the rotation center line of the bearing seat (56) is parallel to the rotation center line of the prism (53).

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