Contrast agent injection device for cardiovascular medicine department

Abstract

The invention relates to the technical field of contrast injection, in particular to a contrast agent injection device for cardiovascular medicine, which comprises a needle cylinder made of a transparent material, an injection rod slidably connected in the needle cylinder, and a guide frame fixedly connected to the inner bottom of a shell and internally provided with a sliding groove. The limiting frame is slidably connected to the guide frame, one end of the second spring is fixedly connected to the limiting frame, the other end of the second spring is fixedly connected to the guide frame, the sliding part is slidably connected to the shell, and the pushing assembly is arranged at the inner bottom of the shell and is in extrusion fit with the injection rod. The angle of the shell is adjusted through clamping fit of the second limiting piece and the guide frame, the injection needle is made to directly face the blood vessel of a patient, and the injection rod can be pulled out of the needle cylinder to check whether the injection needle is successfully inserted into the blood vessel of the patient or not through arrangement of the gear and the first connecting rod; and the injury and the influence on a patient caused by secondary insertion of the needle head are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of contrast injection, and in particular to a contrast agent injection device for cardiovascular medicine. Background Art

[0002] Patients with cardiovascular diseases account for a large proportion of clinical treatments. To treat cardiovascular diseases, it is necessary to first understand the filling of blood in the heart and the changes in the heart and large blood vessels. In order to observe these conditions and changes, it is necessary to inject contrast agents into the patients. Under the irradiation of X-rays, the contrast agents can make the heart and large blood vessels visible, so a contrast agent injection device is needed to inject contrast agents into the patients.

[0003] The patent application number is: CN202222810608.3 A cardiovascular angiography syringe automatic push injection device, including a base, a syringe, a fixed assembly, a push block and a drive assembly, the fixed assembly includes a mounting portion for mounting to the base, and a movable portion, the movable portion is connected to the mounting portion, and is used to be fixed around the syringe when the syringe is received in the mounting portion, the push block is slidably arranged on the base, and the push block can be operably abutted against the piston rod of the syringe, and the drive assembly includes a power portion and a sliding portion fixedly connected to the push block.

[0004] In the above patent, the syringe is mainly fixed by the mounting part and the movable part, and the push block pushes the piston rod for injection. When using this device to inject contrast agent, it is impossible to determine whether the injection needle is inserted into the blood vessel, which can easily lead to injection failure. In addition, if the injection fails, the injection needle needs to be inserted into the blood vessel again, which will cause pain to the patient. Now a contrast agent injection device for cardiovascular medicine is developed, which can quickly and accurately insert the injection needle into the patient's blood vessel. Summary of the invention

[0005] The present invention provides a contrast agent injection device for cardiovascular medicine, which can quickly and accurately insert an injection needle into a patient's blood vessel, so as to overcome the disadvantages that it is impossible to judge whether the injection needle has been inserted into the blood vessel, which easily leads to injection failure, and the injection failure requires the injection needle to be inserted into the blood vessel again, which causes pain to the patient.

[0006] The technical solution is as follows: A contrast agent injection device for cardiovascular medicine includes a syringe, the syringe is made of a transparent material, an injection rod is slidably connected to the syringe, and also includes a guide frame, the guide frame is fixedly connected to the inner bottom of the shell, a slide groove is provided inside the guide frame, a limit frame is slidably connected to the guide frame, one end of the second spring is fixedly connected to the limit frame, the other end of the second spring is fixedly connected to the guide frame, a sliding member is slidably connected to the shell, a pushing component is arranged at the inner bottom of the shell, the pushing component is extruded and matched with the injection rod, the pushing component is used to push the injection rod, the locking component is fixedly connected to the outer bottom of the shell, the locking component is used to lock the syringe, and the supporting component is arranged on the side of the shell to support the shell.

[0007] Furthermore, the pushing assembly includes an electric slide rail, which is fixedly connected to the bottom of the shell, and the sliding frame is slidably connected to the electric slide rail. A rack is provided in the middle of the sliding frame, and a triangular inclined surface is provided on the sliding frame. The triangular inclined surface of the sliding frame is extruded and matched with the limit frame, and the extrusion column is fixedly connected to the side of the sliding frame, and the wedge block is fixedly connected to the sliding frame. The gear is movably connected to the slide groove of the guide frame, and the gear and the rack of the sliding frame are meshed with each other. The gear and the sliding frame are extruded and matched, the first connecting rod is rotatably connected to the gear, and the sliding member is rotatably connected to the end of the first connecting rod away from the guide frame, the first fixing member is fixedly connected to the end of the sliding member close to the syringe, the first fixing member is extruded and matched with the injection rod, and the first fixing member has a semi-closed structure, the top of the first fixing member is closed, and the bottom of the first fixing member is open. The first fixing member will drive the injection rod to move horizontally, and the first fixing member will not limit the vertical movement of the injection rod.

[0008] Furthermore, the locking assembly includes a base, which is fixedly connected to the outer bottom of the shell, a first limiting piece is slidably connected to the side of the base, one end of the buckle is rotatably connected to the base, and the other end of the buckle is engaged with the first limiting piece. The syringe is fixed to the base by the buckle, and the syringe can slide between the buckle and the base, one end of the first spring is fixedly connected to the base, and the other end of the first spring is fixedly connected to the first limiting piece.

[0009] Furthermore, the support assembly includes a connecting plate, which is fixedly connected to the side of the shell, and a plurality of clamping holes are evenly spaced along the circumferential direction. The first connecting member is rotatably connected to the side of the connecting plate away from the shell, the supporting member is fixedly connected to the bottom of the first connecting member, the supporting member is fixedly connected to the bottom plate, the second limiting member is slidably connected to the supporting member, the second limiting member is engaged with the clamping hole on the connecting plate, one end of the third spring is fixedly connected to the second limiting member, and the other end of the third spring is fixedly connected to the supporting member.

[0010] Furthermore, it also includes a compression mechanism for compressing the patient's wound, the compression mechanism includes a first arc plate, the first arc plate symmetrically arranged along the syringe is fixedly connected to the base plate, the fixing rod is fixedly connected to the base plate, the slider is slidably connected to the fixing rod, the second fixing piece is fixedly connected to the slider on a side close to the first arc plate, the second arc plate is fixedly connected to the second fixing piece on a side close to the first arc plate, a Velcro is fixed to the bottom of the second arc plate, the hemostatic cotton is adhered to the bottom of the second arc plate by the Velcro, the driving component is rotatably connected to the slider, and the driving component is used to drive the hemostatic cotton down to the wound.

[0011] Furthermore, the driving assembly includes a fourth connecting member, which is slidably connected to the outer shell, the fourth connecting member is extruded and matched with the wedge block, the fixed block is fixedly connected to the bottom of the outer shell near the fourth connecting member, one end of the fourth spring is fixedly connected to the fixed block, the other end of the fourth spring is fixedly connected to the fourth connecting member, the second connecting member is rotatably connected to the bottom of the fourth connecting member, the third connecting member is rotatably connected to one end of the second connecting member near the fixed rod, and the third connecting member is divided into a plurality of sliding rods, one of which is rotatably connected to the bottom plate, and the other is rotatably connected to the slider.

[0012] Furthermore, it also includes a piercing mechanism for piercing the injection needle into a blood vessel, the piercing mechanism includes a third fixing piece, the third fixing piece is fixedly connected to the bottom of the shell, the connecting block is slidably connected to the third fixing piece, the friction plate is fixedly connected to the position of the shell near the third fixing piece, the friction plate and the connecting block rub against each other, one end of the fifth spring is fixedly connected to the shell, the other end of the fifth spring is fixedly connected to the connecting block, the moving frame is slidably connected to the side of the third fixing piece, the moving frame is provided with an inclined surface, the inclined surface of the moving frame is extruded and matched with the sliding frame, the extrusion rod is fixedly connected to one end of the moving frame away from the sliding piece, the sliding block is slidably connected to the bottom of the shell, the symmetrically arranged fixing plates are fixedly connected to the bottom of the sliding block, the fixing plate is used to lock the syringe, the sliding block is provided with a through hole, and the moving frame is slidably connected to the sliding block through the through hole.

[0013] Furthermore, an inclined surface and a square groove are provided on the inner side of the bottom of the shell near the sliding block, the extrusion rod is extruded and matched with the inclined surface, and the extrusion rod is snap-fitted with the square groove.

[0014] Furthermore, it also includes a stabilizing mechanism for fixing the arm, the stabilizing mechanism includes a rotating member, the rotating member is rotatably connected to the side of one of the first arc-shaped plates, an arc groove is provided on the rotating member, the third arc-shaped plate is fixedly connected to the upper part of the rotating member, the flipping assembly is fixedly connected to the side of the sliding frame, the flipping assembly is extruded and matched with the rotating member, and the flipping assembly is used to flip the third arc-shaped plate.

[0015] Furthermore, the flip assembly includes an extrusion piece, which is fixedly connected to the side of the sliding frame, a transverse groove is opened on the side of the outer shell, the extrusion piece slides in the transverse groove, the slide is fixedly connected to the base plate, the second connecting rod is slidably connected to the side of the slide close to the third arc plate, the second connecting rod is Z-shaped, the extrusion piece is snap-fitted with the second connecting rod, the second connecting rod is slidably connected to the base plate, the second connecting rod is slidably connected to the arc groove of the rotating member, one end of the sixth spring is fixedly connected to the base plate, and the other end of the sixth spring is fixedly connected to the second connecting rod.

[0016] The present invention has the following advantages: The beneficial effects of the present invention are:

[0017] 1. The present invention adjusts the angle of the housing by engaging the second limiter and the guide frame, so that the injection needle faces the patient's blood vessel. The gear and the first connecting rod are arranged so that the injection rod can be withdrawn from the syringe to check whether the injection needle is successfully inserted into the patient's blood vessel, thereby avoiding the harm and impact on the patient caused by the second insertion of the needle.

[0018] 2. The present invention squeezes the fourth connecting member to move by the sliding frame, and the movement of the fourth connecting member drives the movement of the second connecting member, and the second connecting member drives the third connecting member to move, thereby driving the slider to move, so that the hemostatic cotton moves downward to press the patient's wound. After the injection is completed, the fourth connecting member drives the second arc plate and the first arc plate to move upward and reset, so that the patient's wound can be pressed quickly and timely to reduce the patient's bleeding.

[0019] 3. The present invention pushes the syringe by setting a fixed plate, and drives the moving frame to move through the sliding frame to drive the sliding block to move. The movement of the sliding block will drive the fixed plate to move. The movement of the fixed plate will push the syringe and insert the injection needle into the patient's blood vessel. In this way, the needle can be inserted into the blood vessel to avoid repeated insertion due to the shallow insertion depth.

[0020] 4. The present invention drives the second connecting rod to move by the movement of the extrusion part, and the movement of the second connecting rod will push the rotating part to rotate, and the rotation of the rotating part will drive the third arc plate to rotate. The third arc plate can fix the patient's arm by rotating backward, and the arm can be unlocked by rotating forward. In this way, the arm can be fixed, avoiding the movement of the arm before injection, which may cause the injection needle to fail to be inserted into the blood vessel, and the patient's arm moving during the injection, which may cause pain. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the shell and syringe components of the present invention.

[0023] Figure 3 It is a cross-sectional view of the three-dimensional structure of the connecting plate, the first connecting member and the bottom plate of the present invention.

[0024] Figure 4 It is a cross-sectional view of the three-dimensional structure of the buckle, the first limiting member and the base of the present invention.

[0025] Figure 5 It is a cross-sectional view of the three-dimensional structure of the sliding frame, the limiting frame and the guide frame of the present invention.

[0026] Figure 6 It is a cross-sectional view of the three-dimensional structure of the gear, guide frame and electric slide rail of the present invention.

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the sliding frame of the present invention.

[0028] Figure 8 It is a schematic diagram of the three-dimensional structure of the compression mechanism of the present invention.

[0029] Fig. 9 It is a schematic diagram of the three-dimensional structure of the second connecting member, the fixing rod, the housing and other components of the present invention.

[0030] Fig.10 It is a schematic diagram of the three-dimensional structure of the sliding frame, electric slide rail, fixed block and other components of the present invention.

[0031] Fig.11 It is a schematic diagram of the three-dimensional structure of the piercing mechanism of the present invention.

[0032] Fig.12 It is a schematic diagram of the three-dimensional structure of the friction plate, sliding block, movable frame and other components of the present invention.

[0033] Fig.13 It is a schematic diagram of the three-dimensional structure of the extrusion part, slideway, bottom plate and other components of the present invention.

[0034] Fig.14 It is a schematic diagram of the three-dimensional structure of the sliding frame, slideway, extrusion parts and other components of the present invention.

[0035] Description of the accompanying drawings: 1_housing, 11_syringe, 12_buckle, 13_injection rod, 14_first fixing member, 15_sliding member, 16_base, 17_first spring, 18_first limiting member, 19_sliding frame, 110_gear, 111_first connecting rod, 112_electric slide rail, 113_limiting frame, 114_second spring, 115_bottom plate, 116_support member, 117_first connecting member, 118_second limiting member, 119_third spring, 120_connecting plate, 121_guide frame, 122-extrusion column, 123-wedge Block, 2_first arc plate, 21_fixing rod, 22_second connecting piece, 23_sliding block, 24_second arc plate, 25_hemostatic cotton, 26_third connecting piece, 27_second fixing piece, 28_fourth spring, 29_fixing block, 210_fourth connecting piece, 3_fixing plate, 31_moving frame, 32_third fixing piece, 33_extrusion rod, 34_fifth spring, 35_connecting block, 36_sliding block, 37-friction plate, 4_third arc plate, 41_second connecting rod, 42_slideway, 43_sixth spring, 44_extrusion piece, 45_rotating piece. DETAILED DESCRIPTION

[0036] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0037] Embodiment 1: A contrast medium injection device for cardiovascular medicine, such as Figure 1-Figure 7As shown, it includes a shell 1, a syringe 11, a buckle 12, an injection rod 13, a first fixing member 14, a sliding member 15, a base 16, a first spring 17, a first limiting member 18, a sliding frame 19, a gear 110, a first connecting rod 111, an electric slide rail 112, a limiting frame 113, a second spring 114, a bottom plate 115, a supporting member 116, a first connecting member 117, a second limiting member 118, a third spring 119, a connecting plate 120 and a guide frame 121. The rear side of the shell 1 is fixedly connected to the connecting plate 120, and a plurality of clamping holes are evenly spaced along the circumferential direction. The first connecting member 117 is rotatably connected to the rear side of the connecting plate 120, and the supporting member 116 is fixedly connected to the lower side of the first connecting member 117. The lower end of the support member 116 is fixedly connected to the bottom plate 115, the second limit member 118 is slidably connected to the support member 116, the second limit member 118 is snap-fitted with the card hole on the connecting plate 120, one end of the third spring 119 is fixedly connected to the second limit member 118, the other end of the third spring 119 is fixedly connected to the support member 116, the base 16 is fixedly connected to the bottom of the shell 1, the first limit member 18 is slidably connected to the front of the base 16, one end of the buckle 12 is rotatably connected to the base 16, the other end of the buckle 12 is snap-fitted with the first limit member 18, the syringe 11 is fixedly fixed to the bottom of the base 16 by the buckle 12, the syringe 11 can slide between the buckle 12 and the base 16, and the syringe 11 is a transparent needle The syringe 11, the injection rod 13 is slidably connected in the syringe 11, one end of the first spring 17 is fixedly connected to the base 16, the other end of the first spring 17 is fixedly connected to the first limiter 18, the electric slide rail 112 is fixedly connected to the bottom of the shell 1, the electric slide rail 112 is electrically connected through the external control system, the sliding frame 19 is slidably connected to the electric slide rail 112, a rack is provided in the middle of the sliding frame 19, a triangular inclined surface is provided above the sliding frame 19, an extrusion column 122 is fixedly connected to the right side of the sliding frame 19, a wedge block 123 is fixedly connected to the rear of the sliding frame 19, a guide frame 121 is fixedly connected to the bottom of the shell 1, the guide frame 121 is located on the right side of the electric slide rail 112, and a slide groove begins in the middle of the guide frame 121 The limit frame 113 is slidably connected to the guide frame 121, one end of the second spring 114 is fixedly connected to the limit frame 113, and the other end of the second spring 114 is fixedly connected to the guide frame 121. The triangular inclined surface of the sliding frame 19 is pressed and matched with the limit frame 113. The gear 110 is movably connected to the slide groove of the guide frame 121. The gear 110 and the rack of the sliding frame 19 are meshed with each other. The gear 110 and the sliding frame 19 are pressed and matched. The first connecting rod 111 is rotatably connected to the gear 110. The sliding member 15 is slidably connected to the housing 1, and the sliding member 15 is rotatably connected to the left end of the first connecting rod 111. The first fixing member 14 is fixedly connected to the right end of the sliding member 15, and the first fixing member 14 is pressed and matched with the injection rod 13.The first fixing member 14 is a semi-enclosed structure, the upper part of the first fixing member 14 is closed, and the lower part of the first fixing member 14 is open. The first fixing member 14 will drive the injection rod 13 to move left and right, and the first fixing member 14 will not limit the up and down movement of the injection rod 13.

[0038] When the patient needs to undergo reflective imaging angiography, the contrast agent needs to be injected into the patient. First, the medical staff needs to fill the syringe 11 with the contrast agent, and then hold the syringe 11 with one hand and place it under the shell 1, above the buckle 12, and let the left end of the injection rod 13 close to the first fixing member 14. The other hand squeezes the buckle 12 upward. Under the squeezing action, the buckle 12 will be stuck on the first limiting member 18, so that the syringe 11 is stuck under the shell 1. Then the patient needs to place his arm on the bottom plate 115, and the medical staff first finds the location of the patient's blood vessels. Then the medical staff holds the shell 1 with one hand and holds the rear end of the second limiting member 118 with the other hand, and pulls the second limiting member 118 out of the clamping hole of the connecting plate 120. At this time The third spring 119 is stretched, the connecting plate 120 and the shell 1 are rotatable, and the medical staff can hold the shell 1 and adjust the angle of the shell 1 so that the injection needle is aligned with the patient's blood vessel. After the injection needle is aligned with the blood vessel, the second limiting member 118 is released, and the stretched third spring 119 will shrink. The shrinkage of the third spring 119 will drive the second limiting member 118 to move forward, and the second limiting member 118 moves forward and is re-engaged in the clamping hole of the connecting plate 120. The connecting plate 120 and the shell 1 will be clamped on the first connecting member 117, and the injection needle will also be fixed in the adjusted position. The electric slide rail 112 is controlled to drive the sliding frame 19 to move right. When the sliding frame 19 moves right, the rack on the sliding frame 19 will mesh with the gear 110, and the sliding frame 19 moves right. The gear 110 drives the rack to move right, and the rack drives the gear 110 to rotate counterclockwise. The gear 110 drives the first connecting rod 111 to move right, and the first connecting rod 111 drives the sliding member 15 to move right as well. The sliding member 15 moves and drives the first fixing member 14 to move right. The first fixing member 14 moves right and squeezes the injection rod 13. Under the squeezing action of the first fixing member 14, the injection rod 13 moves right. Before the injection rod 13 moves right, the staff needs to manually move the syringe 11 to the right to insert the injection needle into the patient's blood vessel. The injection rod 13 slides to the right inside the syringe 11 to squeeze out the contrast agent, so that part of the contrast agent can be injected into the patient's blood vessel. At this time, the first connecting rod 111 rotates from the left side of the gear 110 to the right side of the gear 110. The sliding frame 19 continues to move to the right, and the rack drives the gear 110 to continue to rotate counterclockwise. The rotation of the gear 110 will drive the first connecting rod 111 to move to the left, and the first connecting rod 111 drives the sliding member 15 to move to the left as well. The sliding member 15 drives the first fixing member 14 to move to the left, and the first fixing member 14 drives the injection rod 13 to move to the left. The injection rod 13 will slide to the left in the syringe 11. Due to the pressure, a small part of the blood will flow back into the syringe 11. Because the syringe 11 is made of transparent material, the medical staff can observe whether there is blood inside the syringe 11. If there is no blood, the electric slide rail 112 is controlled to stop driving the sliding frame 19 to move, and the patient's blood vessels are re-found. The above steps are repeated. If there is blood in the syringe 11,This proves that the injection needle is aligned with the blood vessel, and the electric slide rail 112 will drive the sliding frame 19 to continue to move to the right. During the movement of the sliding frame 19 to the right, the triangular slope of the sliding frame 19 will squeeze the limiting frame 113. Under the squeezing action of the sliding frame 19, the limiting frame 113 moves upward, and the second spring 114 is stretched. The limiting frame 113 no longer blocks the gear 110. At this time, the rack on the sliding frame 19 continues to move to the right, and the rack on the sliding frame 19 will push the gear 110 to slide to the right on the slide groove. The sliding of the gear 110 to the right will drive the first connecting rod 111 to move to the right. The movement of the first connecting rod 111 drives the sliding member 15 and the first fixing member 14 to move to the right. The first fixing member 14 moves to the right to squeeze and push the injection rod 13 to move to the right. 13 moves to insert the needle into the patient's blood vessel again, and inject the contrast agent into the patient's blood vessel. In this process, the sliding frame 19 will continue to squeeze the limiting frame 113, and the limiting frame 113 will slide from the lowest point on the right side of the triangular slope to the highest point, and continue to slide from the highest point to the lowest point, and finally separate from the sliding frame 19. At this time, the extended second spring 114 contracts, and the contraction of the second spring 114 drives the limiting frame 113 to move downward and reset. After the injection is completed, the electric slide rail 112 is controlled to drive the sliding frame 19 to move to the left. The movement of the sliding frame 19 will drive the rack and the squeezing column 122 on the sliding frame 19 to move to the left. The rack moving to the left drives the gear 110 to move to the left. At the same time, the squeezing column 122 will also be squeezed with the gear 110, driving the gear 110 to move to the left. 0 moves to the left. During the movement of the sliding frame 19 to the left, the left side of the triangular inclined surface of the sliding frame 19 will be squeezed by the limiting frame 113 again, and the limiting frame 113 will be squeezed and moved upward, so that the gear 110 moving to the left can be reset. At this time, the limiting frame 113 is stretched, and the triangular inclined surface of the sliding frame 19 continues to move to the left and disengages from the limiting frame 113. The stretched second spring 114 will shrink. The shrinkage of the second spring 114 drives the limiting frame 113 to move downward and reset. The gear 110 is re-locked by the limiting frame 113. While the gear 110 moves to the left and resets, the gear 110 will push the first connecting rod 111 to move to the left. The movement of the first connecting rod 111 to the left will drive the sliding member 15 and the first fixing member 14 to move to the left and reset. The first fixing member 1 4 drives the injection rod 13 to move to the left, the injection rod 13 moves and slides out of the syringe 11 and pulls the injection needle out of the blood vessel. After the injection needle is pulled out, the patient can remove his hand from the bottom plate 115 and then perform X-ray irradiation. At this time, the medical staff needs to press the front end of the first limiter 18 backward, the first spring 17 will be compressed, and the first spring 17 squeezes backward so that the first limiter 18 is no longer engaged with the buckle 12. The buckle 12 will rotate and open under the action of gravity. When the buckle 12 is opened, the buckle 12 no longer locks the syringe, and the staff can remove the syringe and dispose of the used syringe. After opening the buckle 12, the medical staff can stop pressing the first limiter 18. At this time, the first spring 17 in a compressed state will extend.The first spring 17 stretches and drives the first stopper 18 to move forward and reset. In this process, the angle of the injection needle can be adjusted so that the injection needle is aligned with the blood vessel. By inserting and removing the injection needle, it can be detected whether the injection needle is inserted into the blood vessel, thereby achieving the purpose of successfully injecting the contrast agent into the patient's blood vessel.

[0039] Embodiment 2: Based on embodiment 1, Figure 8-Figure 10 As shown, it also includes a compression mechanism for compressing the patient's wound, and the compression mechanism includes a first arc plate 2, a fixing rod 21, a second connecting member 22, a slider 23, a second arc plate 24, a hemostatic cotton 25, a third connecting member 26, a second fixing member 27, a fourth spring 28, a fixing block 29 and a fourth connecting member 210. The two first arc plates 2 are fixedly connected to the bottom plate 115, and the first arc plates 2 are on the same horizontal line. The fourth connecting member 210 is slidably connected to the rear part of the shell 1, and the fourth connecting member 210 is squeezed and matched with the wedge block 123. The fixing block 29 is fixedly connected to the bottom of the shell 1 near the fourth connecting member 210. One end of the fourth spring 28 is fixedly connected to the fixing block 29, and the other end of the fourth spring 28 is fixedly connected to the fixing block 29. It is connected to the fourth connecting member 210, the second connecting member 22 is rotatably connected to the lower side of the fourth connecting member 210, the third connecting member 26 is rotatably connected to the right end of the second connecting member 22, the third connecting member 26 is divided into two upper and lower sliding rods, the lower sliding rod is rotatably connected to the bottom plate 115, the fixed rod 21 is fixedly connected above the bottom plate 115, the fixed rod 21 is located behind the first curved plate 2 on the right side, the slider 23 is slidably connected to the fixed rod 21, the slider 23 is rotatably connected to the upper sliding rod, the second fixing member 27 is fixedly connected to the front side of the slider 23, the second curved plate 24 is fixedly connected to the lower end of the second fixing member 27, a Velcro is fixed at the bottom of the second curved plate 24, and the hemostatic cotton 25 is adhered to the bottom of the second curved plate 24 by the Velcro.

[0040] After the injection is completed, the patient's arm will bleed, so the patient's wound needs to be pressed to stop the bleeding. After the injection is completed and the needle is pulled out, the electric slide rail 112 continues to control the sliding frame 19 to move to the left. The movement of the sliding frame 19 to the left will drive the wedge block 123 on the sliding frame 19 to move to the left. The wedge block 123 will squeeze the fourth connecting member 210 during the movement. Under the squeezing action of the wedge block 123, the fourth connecting member 210 moves to the left. The movement of the fourth connecting member 210 to the left will push the second connecting member 22 to the left. The second connecting member 22 drives the slide bar below the third connecting member 26 to rotate downward, and the rotation of the slide bar below drives the right end of the second connecting member 22 to rotate downward. The downward rotation of the right end of the second connecting member 22 drives the slide bar above the third connecting member 26 to move downward, thereby driving the slider 23 to move downward and reset. The downward movement of the slider 23 drives the second fixing member 27, the second curved plate 24 and the hemostatic cotton 25 to move downward. The downward movement of the hemostatic cotton 25 squeezes the patient's wound and presses the wound to stop bleeding. While the hemostatic cotton 25 presses the wound to stop bleeding, , the staff can press the first limiter 18 backward to remove the syringe. After completing the hemostasis, the electric slide rail 112 is controlled to drive the slide frame 19 to move rightward to the initial position. The wedge block 123 of the slide frame 19 will slowly stop squeezing the fourth connecting member 210, and the compressed fourth spring 28 will extend. The extension of the fourth spring 28 will drive the fourth connecting member 210 to move rightward. The rightward movement of the fourth connecting member 210 will drive the second connecting member 22 to move rightward. The second connecting member 22 will drive the lower slide rail to rotate upward, and the rotation of the lower slide rail will The right end of the second connecting member 22 is driven to rotate upward, and the upward rotation of the right end of the second connecting member 22 drives the upper sliding rod to rotate upward, and the upper sliding rod will drive the sliding block 23 to move upward, and the upward movement of the sliding block 23 will drive the second fixing member 27, the hemostatic cotton 25 and the second arc plate 24 to move upward and reset. The medical staff can remove the hemostatic cotton 25 for disposal, and before the next injection, stick clean hemostatic cotton 25 on the second arc plate 24. In this way, pressure can be applied to the patient's wound, which is convenient for bandaging the patient's wound after the injection of the contrast agent.

[0041] like Fig.11 and Fig.12As shown, it also includes a piercing mechanism for piercing the injection needle into the blood vessel, the piercing mechanism includes a fixed plate 3, a movable frame 31, a third fixed member 32, an extrusion rod 33, a fifth spring 34, a connecting block 35, a sliding block 36 and a friction plate 37, the third fixed member 32 is fixedly connected to the bottom of the housing 1, the connecting block 35 is slidably connected to the third fixed member 32, the friction plate 37 is fixedly connected to the housing 1 near the third fixed member 32, the friction plate 37 and the connecting block 35 rub against each other, one end of the fifth spring 34 is fixedly connected to the housing 1, the other end of the fifth spring 34 is fixedly connected to the connecting block 35, the movable frame 31 is slidably connected to the front side of the third fixing member 32, the movable frame 31 is provided with an inclined surface, the inclined surface of the movable frame 31 is squeezed and matched with the sliding frame 19, the squeezing rod 33 is fixedly connected to the right end of the movable frame 31, and an inclined surface and a square groove are provided on the inner side of the bottom of the outer shell 1 near the right end of the movable frame 31, the squeezing rod 33 is squeezed and matched with the inclined surface, and the squeezing rod 33 is snap-fitted with the square groove, the sliding block 36 is slidably connected to the bottom of the outer shell 1, the two fixed plates 3 are fixedly connected under the sliding block 36, the fixed plate 3 is used to lock the syringe 11, and a through hole is provided in the middle position of the sliding block 36, and the movable frame 31 is slidably connected to the sliding block 36 through the through hole.

[0042] The injection rod 13 moves to the right, which will squeeze out the contrast agent and insert the injection needle into the patient's blood vessel. Because there is a distance between the patient's skin and the needle, in the process of pushing the injection rod 13, a small amount of contrast agent may be squeezed out before the injection needle is inserted. Therefore, the injection needle must be inserted into the patient's blood vessel before the injection agent is ejected. When the syringe 11 is clamped with the buckle 12, the position of the syringe 11 is adjusted so that the syringe 11 is also clamped between the fixed plates 3. When the injection rod 13 needs to be pushed to the right, the electric slide rail 112 needs to be controlled to drive the sliding frame 19 to move to the right. At this time, the moving frame 31 is clamped with the sliding frame 19. The movement of the sliding frame 19 will drive the moving frame 31 to move to the right. The moving frame 31 moves with The movable sliding block 36 moves to the right, and the movement of the sliding block 36 will drive the fixed plate 3 to move to the right. Because the fixed plate 3 is just engaged with the syringe 11 at this time, the fixed plate 3 will drive the syringe 11 to move to the right first, so that the injection needle at the right end of the syringe 11 is inserted into the patient's blood vessel. At the same time, the movable frame 31 will drive the squeezing rod 33 to move to the right. In the process of the squeezing rod 33 moving to the right, the inclined surface will squeeze the squeezing rod 33. Under the squeezing effect of the inclined surface, the squeezing rod 33 will move upward. The movement of the squeezing rod 33 drives the movable frame 31 to move upward. The upward movement of the movable frame 31 will drive the third fixing member 32 to move upward. The upward movement of the third fixing member 32 will rub against the connecting block 35, and the fifth spring 34 will be stretched. The upward movement of the movable frame 31 will gradually rub against the sliding frame 1 9 is disengaged, the squeezing rod 33 moves to the right and gets stuck in the square groove, the sliding frame 19 will continue to move to the right, driving the injection rod 13 to move to the right to inject the contrast agent into the patient's blood vessel, so that the movement of the sliding frame 19 will not drive the fixing plate 3 to continue to move to the right, to prevent the injection needle from continuing to be inserted into the patient's blood vessel. After the injection is completed, the sliding frame 19 moves to the left to squeeze the inclined surface below the moving frame 31, and the sliding frame 19 squeezes the moving frame 31 to move upward. The upward movement of the moving frame 31 will drive the squeezing rod 33 to move upward and out of the square groove, and the sliding frame 19 will continue to move to the left and get stuck with the moving frame 31 again. In the process that the sliding frame 19 continues to move to the left to get stuck with the moving frame 31, the sliding frame 19 will gradually stop squeezing the moving frame 31. The fifth spring 34 stretched at the same time contracts, and the contraction of the fifth spring 34 drives the connecting block 35 to move downward. During the process of the connecting block 35 moving downward, the friction plate 37 rubs against the connecting block 35, increasing the resistance of the connecting block 35 to slide downward, so that the connecting block 35 falls slowly, and the connecting block 35 also drives the moving frame 31 to fall slowly. During the process of the moving frame 31 falling slowly, the moving frame 31 is engaged with the sliding frame 19 and moves to the left under the drive of the sliding frame 19. The movement of the moving frame 31 to the left will pull the extrusion rod 33 located above the square groove to the left, so that the lower end of the extrusion rod 33 is located above the inclined surface of the shell 1. As the connecting block 35 continues to descend, the extrusion rod 33 contacts the inclined surface, and the sliding frame 19 drives the moving frame 31 to move to the left and reset.The reset of the movable frame 31 will drive the squeezing rod 33 to move to the left and reset, so that the needle can be inserted into the patient's blood vessel before the contrast agent is ejected, and at the same time, it can avoid repeated insertions caused by the injection head not being inserted deeply.

[0043] like Fig.13 and Fig.14 As shown, it also includes a stabilizing mechanism for fixing the arm, the stabilizing mechanism includes a third arc plate 4, a second connecting rod 41, a slide 42, a sixth spring 43, an extrusion member 44 and a rotating member 45, a transverse groove is opened on the front side of the housing 1, the extrusion member 44 is fixedly connected to the front of the sliding frame 19, the extrusion member 44 slides in the transverse groove, the slide 42 is fixedly connected to the lower left corner above the bottom plate 115, the second connecting rod 41 is slidably connected to the right side of the slide 42, the second connecting rod 41 is Z-shaped, and the extrusion member 44 is fixedly connected to the front of the sliding frame 19, and the extrusion member 44 slides in the transverse groove. Part 44 is snap-fitted with the second connecting rod 41, the second connecting rod 41 is slidably connected to the base plate 115, one end of the sixth spring 43 is fixedly connected to the base plate 115, the other end of the sixth spring 43 is fixedly connected to the second connecting rod 41, the rotating part 45 is rotatably connected to the left side of the first arc plate 2 on the right side, an arc groove is provided on the rotating part 45, the second connecting rod is slidably connected to the arc groove, the third arc plate 4 is fixedly connected to the upper part of the rotating part 45, and the third arc plate 4 is used to fix the patient's arm.

[0044] Before and during the injection of contrast agent, the patient may move his arm, resulting in the inability to accurately insert the injection needle into the patient's blood vessel. Therefore, the patient's arm needs to be fixed. After the patient places his arm on the first curved plate 2, the angle of the shell 1 is adjusted so that the injection needle is facing the patient's blood vessel. Then the electric slide rail 112 is controlled to drive the sliding frame 19 to move to the right, and the sliding frame 19 will drive the extrusion member 44 to move to the right as well. Because the third curved plate 4 is Z-shaped, in the process of the extrusion member 44 moving to the right, the extrusion member 44 will drive the second connecting rod 41 to move upward, the sixth spring 43 is stretched, and the second connecting rod 41 moves upward and slides in the arc groove and squeezes the rotating member 45. Under the squeezing and pushing action of the second connecting rod 41, the rotating member 45 rotates backward, and the rotating member 45 will drive the third curved plate 4 to rotate backward. The third curved plate 4 rotates backward and will buckle on the patient's arm, so as to fix the patient's arm. During the injection of contrast agent, the second connecting rod The rod 41 is always in a lifted state. After the injection is completed, the sliding frame 19 moves to the left, driving the extruding piece 44 to move to the left. When the extruding piece 44 moves to the left end of the second connecting rod 41, the extruding piece 44 will not be engaged with the second connecting rod 41. At this time, the extended sixth spring 43 will shrink. Under the action of the pulling force of the sixth spring 43 and the gravity of the second connecting rod 41 itself, the second connecting rod 41 will move downward and contact the extruding piece 44 again. The downward movement of the second connecting rod 41 will slide in the arc groove and squeeze the rotating piece 45 downward. Under the squeezing action of the second connecting rod 41, the rotating piece 45 will be driven to rotate forward. The forward rotation of the rotating piece 45 will drive the third arc plate 4 to rotate forward and open. The third arc plate 4 will no longer fix the patient's arm, and the patient can move his arm out of the first arc plate 2. In this way, the patient's arm can be fixed to prevent the patient's arm from moving and causing the injection needle to fail to be successfully inserted into the blood vessel. During the injection process, the patient moves his arm and causes pain.

[0045] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A contrast agent injection device for cardiovascular medicine, comprising a syringe (11), the syringe (11) being made of a transparent material, an injection rod (13) being slidably connected in the syringe (11), characterized in that: The invention also comprises a guide frame (121), the guide frame (121) is fixedly connected to the inner bottom of the shell (1), a slide groove is provided inside the guide frame (121), a limit frame (113) is slidably connected to the guide frame (121), one end of the second spring (114) is fixedly connected to the limit frame (113), the other end of the second spring (114) is fixedly connected to the guide frame (121), a sliding member (15) is slidably connected to the shell (1), a pushing component is arranged at the inner bottom of the shell (1), the pushing component is pressed and matched with the injection rod (13), the pushing component is used to push the injection rod (13), a locking component is fixedly connected to the outer bottom of the shell (1), the locking component is used to lock the syringe (11), and a supporting component is arranged on the side of the shell (1) and is used to support the shell (1).

2. A contrast medium injection device for cardiovascular medicine according to claim 1, characterized in that: The push assembly comprises an electric slide rail (112), the electric slide rail (112) is fixedly connected to the bottom of the housing (1), a sliding frame (19) is slidably connected to the electric slide rail (112), a rack is provided in the middle of the sliding frame (19), a triangular inclined surface is provided on the sliding frame (19), the triangular inclined surface of the sliding frame (19) is extruded and matched with a limit frame (113), an extrusion column is fixedly connected to the side of the sliding frame (19), a wedge block (123) is fixedly connected to the sliding frame (19), a gear (110) is movably connected to the slide groove of the guide frame (121), the gear (110) and the rack of the sliding frame (19) are meshed with each other, and the gear (110) and the sliding frame (19) Extrusion fit, the first connecting rod (111) is rotatably connected to the gear (110), the sliding member (15) is rotatably connected to the end of the first connecting rod (111) away from the guide frame (121), the first fixing member (14) is fixedly connected to the end of the sliding member (15) close to the syringe (11), the first fixing member (14) is extruded and fitted with the injection rod (13), the first fixing member (14) is a semi-closed structure, the top of the first fixing member (14) is closed, and the bottom of the first fixing member (14) is open, the first fixing member (14) will drive the injection rod (13) to move horizontally, and the first fixing member (14) will not limit the vertical movement of the injection rod (13).

3. A contrast medium injection device for cardiovascular medicine according to claim 2, characterized in that: The locking assembly comprises a base (16), the base (16) is fixedly connected to the outer bottom of the shell (1), a first limiting member (18) is slidably connected to the side of the base (16), one end of the buckle (12) is rotatably connected to the base (16), the other end of the buckle (12) is engaged with the first limiting member (18), the syringe (11) is locked to the base (16) by the buckle (12), and the syringe (11) can slide between the buckle (12) and the base (16), one end of the first spring (17) is fixedly connected to the base (16), and the other end of the first spring (17) is fixedly connected to the first limiting member (18).

4. A contrast agent injection device for cardiovascular medicine according to claim 3, characterized in that: The support assembly comprises a connecting plate (120), the connecting plate (120) is fixedly connected to the side of the housing (1), a plurality of clamping holes are evenly spaced along the circumferential direction on the connecting plate (120), a first connecting member (117) is rotatably connected to a side of the connecting plate (120) away from the housing (1), a supporting member (116) is fixedly connected to the bottom of the first connecting member (117), the supporting member (116) is fixedly connected to the bottom plate (115), a second limiting member (118) is slidably connected to the supporting member (116), the second limiting member (118) is clamped in engagement with the clamping hole on the connecting plate (120), one end of a third spring (119) is fixedly connected to the second limiting member (118), and the other end of the third spring (119) is fixedly connected to the supporting member (116).

5. A contrast medium injection device for cardiovascular medicine according to claim 4, characterized in that: The invention also comprises a compression mechanism for compressing a patient's wound, the compression mechanism comprising a first curved plate (2), the first curved plate (2) being symmetrically arranged along the syringe (11) and fixedly connected to the bottom plate (115), a fixing rod (21) being fixedly connected to the bottom plate (115), a sliding block (23) being slidably connected to the fixing rod (21), a second fixing member (27) being fixedly connected to a side of the sliding block (23) close to the first curved plate (2), a second curved plate (24) being fixedly connected to a side of the second fixing member (27) close to the first curved plate (2), a Velcro being fixed to the bottom of the second curved plate (24), a hemostatic cotton (25) being adhered to the bottom of the second curved plate (24) by the Velcro, a driving component being rotatably connected to the sliding block (23), and the driving component being used to drive the hemostatic cotton (25) to be pressed down onto the wound.

6. A contrast medium injection device for cardiovascular medicine according to claim 5, characterized in that: The driving component includes a fourth connecting member (210), the fourth connecting member (210) is slidably connected to the housing (1), the fourth connecting member (210) is squeezed and matched with the wedge block (123), the fixed block (29) is fixedly connected to the bottom of the housing (1) near the fourth connecting member (210), one end of the fourth spring (28) is fixedly connected to the fixed block (29), the other end of the fourth spring (28) is fixedly connected to the fourth connecting member (210), the second connecting member (22) is rotatably connected to the bottom of the fourth connecting member (210), the third connecting member (26) is rotatably connected to one end of the second connecting member (22) near the fixed rod (21), and the third connecting member (26) is divided into a plurality of sliding rods, one of which is rotatably connected to the bottom plate (115), and the other sliding rod is rotatably connected to the slider (23).

7. A contrast medium injection device for cardiovascular medicine according to claim 6, characterized in that: The invention also comprises a piercing mechanism for piercing the injection needle into a blood vessel, the piercing mechanism comprising a third fixing member (32), the third fixing member (32) being fixedly connected to the inner bottom of the housing (1), a connecting block (35) being slidably connected to the third fixing member (32), a friction plate (37) being fixedly connected to the housing (1) at a position close to the third fixing member (32), the friction plate (37) and the connecting block (35) rubbing against each other, one end of a fifth spring (34) being fixedly connected to the housing (1), the other end of the fifth spring (34) being fixedly connected to the connecting block (35), and a movable frame (36) being fixedly connected to the housing (1). The movable frame (31) is slidably connected to the side of the third fixing member (32), an inclined surface is arranged on the movable frame (31), the inclined surface of the movable frame (31) is pressed and matched with the sliding frame (19), an extrusion rod (33) is fixedly connected to the end of the movable frame (31) away from the sliding member (15), a sliding block (36) is slidably connected to the bottom of the housing (1), a symmetrically arranged fixing plate (3) is fixedly connected to the bottom of the sliding block (36), the fixing plate (3) is used to fix the syringe (11), a through hole is opened on the sliding block (36), and the movable frame (31) is slidably connected to the sliding block (36) through the through hole.

8. A contrast medium injection device for cardiovascular medicine according to claim 7, characterized in that: An inclined surface and a square groove are provided on the inner side of the bottom of the housing (1) near the sliding block (36); the extrusion rod (33) is extruded and matched with the inclined surface, and the extrusion rod (33) is clamped and matched with the square groove.

9. A contrast medium injection device for cardiovascular medicine according to claim 8, characterized in that: The invention also comprises a stabilizing mechanism for fixing the arm, the stabilizing mechanism comprising a rotating member (45), the rotating member (45) being rotatably connected to the side of one of the first arc-shaped plates (2), an arc-shaped groove being provided on the rotating member (45), the third arc-shaped plate (4) being fixedly connected to the rotating member (45), a flipping assembly being fixedly connected to the side of the sliding frame (19), the flipping assembly being pressed and matched with the rotating member (45), and the flipping assembly being used to flip the third arc-shaped plate (4).

10. A contrast medium injection device for cardiovascular medicine according to claim 9, characterized in that: The flip assembly comprises an extrusion member (44), the extrusion member (44) is fixedly connected to the side of the sliding frame (19), a transverse groove is provided on the side of the housing (1), the extrusion member (44) slides in the transverse groove, the slideway (42) is fixedly connected to the bottom plate (115), the second connecting rod (41) is slidably connected to the side of the slideway (42) close to the third arc plate (4), the second connecting rod (41) is Z-shaped, the extrusion member (44) is snap-fitted with the second connecting rod (41), the second connecting rod (41) is slidably connected to the bottom plate (115), the second connecting rod (41) is slidably connected to the arc groove of the rotating member (45), one end of the sixth spring (43) is fixedly connected to the bottom plate (115), and the other end of the sixth spring (43) is fixedly connected to the second connecting rod (41).

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