PICC (Peripherally Inserted Central Catheter) puncture positioning instrument for static therapy outpatient service

Abstract

The invention discloses a PICC (Peripherally Inserted Central Catheter) puncture locator for a static therapy outpatient service, and relates to the technical field of catheter puncture, the PICC puncture locator comprises a support frame, a locating device and a stabilizing device, a moving block is slidably mounted on the surface of the support frame, and a support rod is fixedly mounted on the surface of the moving block; the positioning device comprises a sliding plate, a threaded rod, a two-way nut, a pressing rod, a transmission rod, a circular block and an elastic plate, when the sliding plate moves, the circular block can push the transmission rod to move downwards, the transmission rod moves downwards to push the pressing rod to move downwards, when the pressing rod moves downwards, the elastic plate is extruded, and the sliding plate is slidably installed on the surface of the supporting rod. The threaded rod is fixedly installed on the surface of the sliding plate, a bidirectional nut is installed on the surface of the threaded rod in a threaded mode, and the elastic plate is fixedly installed on the surface of the sliding plate.

Description

Technical Field

[0001] The present invention relates to the technical field of catheter puncture, and particularly to a PICC catheter puncture locator for intravenous therapy outpatient clinics. Background Art

[0002] PICC catheter puncture is a process of inserting a long catheter into a vein to facilitate operations such as infusion, drug administration, blood sample collection, and monitoring.

[0003] A patent with the patent announcement number CN216603018U relates to a PICC catheter puncture locator, belonging to the field of medical technology. The key points of its technical solution include a positioning ring. A screw rod is installed inside the positioning ring. An electric motor is installed on the outer wall of the positioning ring. The output end of the electric motor penetrates the front end face of the positioning ring and extends into the positioning ring and is fixedly connected to the screw rod. A sliding block is sleeved on the outer wall of the screw rod. One end of the sliding block is provided with a second positioning device for positioning the puncture position. By placing the chassis on the table and manually pressing down the support column, the support column can drive the positioning ring to tilt under the action of the rotating shaft, and at the same time, the angle between the support column and the chassis can be changed to align the positioning ring with the position of the arm. Then, the electric motor can be started to drive the screw rod to rotate, prompting the sliding block to slide on the outer wall of the screw rod, and further driving the second positioning device to move, so that the needle sleeve ring is aligned with the puncture position, thus achieving the effect of high-efficiency positioning and puncture.

[0004] In the above patent, the sliding block slides on the outer wall of the screw rod, and further drives the second positioning device to move, so that the needle sleeve ring is aligned with the puncture position, thus achieving the effect of high-efficiency positioning and puncture. However, when performing catheter puncture on the patient's vein, the patient's hand needs to maintain a fixed position and angle. The patient's arm position will shift due to physical discomfort, which will affect the accuracy of the patient's venous catheter puncture.

[0005] Therefore, it is very necessary to design a PICC catheter puncture locator for intravenous therapy outpatient clinics that can prevent the patient's arm from moving during catheter puncture and affecting the catheter puncture effect. Summary of the Invention

[0006] The purpose of the present invention is to provide a PICC catheter puncture locator for intravenous therapy outpatient clinics to solve the problems raised in the above background art.

[0007] To solve the above technical problems, the present invention provides the following technical solution: A PICC catheter puncture locator for intravenous therapy outpatient service, including a support frame, and further including a positioning device and a stabilizing device. Among them, a moving block is slidably installed on the surface of the support frame, and a support rod is fixedly installed on the surface of the moving block. The positioning device includes a sliding plate, a threaded rod, a bidirectional nut, a pressing rod, a transmission rod, a circular block, and an elastic plate. When the sliding plate moves, the circular block will push the transmission rod downward, and the downward movement of the transmission rod will push the pressing rod downward. When the pressing rod moves downward, it will squeeze the elastic plate, so as to avoid the movement of the patient's arm during catheter puncture, which affects the effect of catheter puncture.

[0008] According to the above technical solution, the pressing rod contacts the elastic plate, and an anti-slip rubber is fixedly installed at the bottom of the sliding plate. A return spring is provided between the moving block and the support frame. The anti-slip rubber can improve the friction with the arm, and the return spring can support the moving block.

[0009] According to the above technical solution, the stabilizing device includes an elastic telescopic plate, a squeezing block, a limiting block, a connecting plate, a mounting frame, a storage airbag, an elastic sheet, and a convex block. The convex block will squeeze the storage airbag, and the non-Newtonian fluid inside the storage airbag will limit the moving speed of the convex block. The elastic telescopic plate is universally connected to the surface of the support rod, the connecting plate is fixedly installed at the free end of the elastic telescopic plate, the squeezing block is slidably installed at the bottom of the connecting plate, the limiting block is slidably installed at the bottom of the squeezing block, the mounting frame is fixedly installed on the surface of the elastic telescopic plate, the storage airbag is fixedly installed on the surface of the mounting frame, the elastic sheet is fixedly installed at the free end of the elastic telescopic plate, the convex block is fixedly installed on the surface of the elastic sheet, and the storage airbag is internally provided with a non-Newtonian fluid. According to the above technical solution, a first spring is provided between the squeezing block and the connecting plate, and a second spring is provided between the limiting block and the squeezing block. The first spring can drive the squeezing block to reset, and the second spring can drive the limiting block to reset.

[0010] According to the above technical solution, it further includes a detachment device and a limit device. A detachment device is arranged on the surface of the connecting plate. The detachment device includes a hollow frame, a T-shaped plate, an expansion airbag, a mounting plate, and an L-shaped plate. When the expansion airbag expands, it will push the L-shaped plate to rotate. When the L-shaped plate moves, it will push the limiting block to move further towards each other, preventing the catheter from detaching from the extrusion block. The hollow frame is fixedly installed at the bottom of the connecting plate. The T-shaped plate is fixedly installed on the surface of the extrusion block. The expansion airbag is fixedly installed on the surface of the extrusion block. The mounting plate is fixedly installed on the surface of the extrusion block. The L-shaped plate is rotatably installed on the surface of the mounting plate. The T-shaped plate is slidably installed inside the hollow frame. The hollow frame is communicated with the inside of the expansion airbag through a pipeline, avoiding the situation that when the limiting block moves upward, the limiting block will pull the catheter and affect the catheter puncture effect.

[0011] According to the above technical solution, a torsion spring is arranged between the L-shaped plate and the mounting plate. The L-shaped plate contacts the limiting block. The torsion spring can drive the L-shaped plate to reset, and the L-shaped plate can push the limiting block to reset.

[0012] According to the above technical solution, the limit device includes a circular plate, a sleeve rod, a suction cup, a connecting block, a telescopic rod, a sealing block, a trapezoidal block, and a linkage rod. The sealing block seals the connecting block. At the same time, when the moving block moves downward, it will drive the linkage rod to move downward. When the linkage rod moves downward, it will push the sleeve rod and the suction cup to move downward. The circular plate is fixedly installed on the surface of the support frame. The sleeve rod slidably penetrates the bottom of the support frame. The suction cup is fixedly installed at the bottom of the sleeve rod. The connecting block is fixedly installed on the surface of the support frame. The free end of the telescopic rod slidably penetrates the connecting block. The telescopic rod slidably penetrates the moving block. The trapezoidal block is fixedly installed on the top of the circular plate. The sealing block is fixedly installed on the surface of the telescopic rod. The linkage rod is fixedly installed at the bottom of the moving block, avoiding the situation that when the support frame moves during catheter puncture, it will affect the catheter puncture effect and safety.

[0013] According to the above technical solution, a third spring is arranged between the telescopic rod and the moving block. The bottom of the telescopic rod contacts the trapezoidal block. The linkage rod contacts the sleeve rod. A fourth spring is arranged between the sleeve rod and the support frame. The inside of the support frame is hollow. The inside of the suction cup is communicated with the inside of the support frame through an air pipe, enabling the inclined surface of the trapezoidal block to push the telescopic rod to move. The fourth spring can drive the sleeve rod to reset upward, and the connecting block is communicated with the inside of the support frame.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are: (1). When the patient's arm is placed between the slides of the PICC catheter puncture locator for intravenous therapy outpatient clinic, the distance between the slides can be changed by rotating the bidirectional nut, so that the patient's arm can be restricted between the slides to prevent the patient's arm from moving. At the same time, when the bidirectional nut approaches the slide, the circular block and the transmission rod will push the pressing rod and the elastic plate, and the elastic plate will press the arm. By pressing the arm with the elastic plate, the rotation of the arm can be restricted, thus improving the restriction effect on the patient's arm and avoiding the movement of the patient's arm during catheter puncture, which may affect the effect of catheter puncture.

[0015] (2). The PICC catheter puncture locator for intravenous therapy outpatient clinic can restrict the catheter through the elastic telescopic plate, the extrusion block and the limiting block. By pulling the elastic telescopic plate during catheter puncture, the stability of catheter puncture can be improved, avoiding the influence of nervous hand tremors on the accuracy of catheter puncture during catheter puncture. At the same time, the non-Newtonian fluid inside the storage airbag will limit the delivery stability of the elastic sheet and the extrusion block, avoiding the rapid movement of the extrusion block and the limiting block, which may pull the catheter and affect the effect of catheter insertion into the arm.

[0016] (3). When the extrusion blocks move towards each other, the T-shaped plate will squeeze the gas inside the hollow frame into the inside of the expansion airbag. The expansion of the expansion airbag will push the L-shaped plate to rotate. By the rotation of the L-shaped plate, the limiting blocks will be pushed to rotate towards each other. At the same time, when the extrusion blocks return to their original positions, the hollow frame will suck the gas inside the expansion airbag, causing the limiting blocks to move away from each other more quickly, avoiding the situation that when the limiting blocks move upward, they will pull the catheter and affect the effect of catheter puncture.

[0017] (4). When the arm is placed on the slide of the PICC catheter puncture locator for intravenous therapy outpatient clinic, the gravity of the arm will push the support rod and the moving block downward. When the moving block moves downward, it will drive the telescopic rod downward. When the telescopic rod moves downward, the trapezoidal block will push the telescopic rod and the sealing block to move, and the sealing block will seal the inside of the connecting block. At the same time, when the moving block moves downward, the linkage rod will push the suction cup downward to fit on the ground, and the movement of the support frame can be restricted through the suction cup, avoiding the movement of the support frame during catheter puncture, which may affect the effect and safety of catheter puncture. Description of the Drawings

[0018] The drawings are used to provide a further understanding of the present invention and form a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings: Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the schematic diagram of the position of the slide and the elastic plate of the present invention; Figure 3It is a schematic diagram of the position of the elastic telescopic plate and the connecting plate of the present invention; Figure 4 It is a schematic diagram of the position of the connecting plate and the extrusion block of the present invention; Figure 5 It is a schematic diagram of the position of the elastic telescopic plate and the elastic sheet of the present invention; Figure 6 It is a schematic diagram of the position of the support frame and the sleeve rod of the present invention; Figure 7 It is a schematic diagram of the position of the circular plate and the trapezoidal block of the present invention.

[0019] In the figure: 1. Support frame; 2. Moving block; 3. Support rod; 41. Slide plate; 42. Threaded rod; 43. Bidirectional nut; 44. Pressing rod; 45. Transmission rod; 46. Circular block; 47. Elastic plate; 51. Elastic telescopic plate; 52. Extrusion block; 53. Restriction block; 54. Connecting plate; 55. Mounting frame; 56. Storage airbag; 57. Elastic sheet; 58. Convex block; 61. Hollow frame; 62. T-shaped plate; 63. Inflatable airbag; 64. Mounting plate; 65. L-shaped plate; 71. Circular plate; 72. Sleeve rod; 73. Suction cup; 74. Connecting block; 75. Expansion rod; 76. Sealing block; 77. Trapezoidal block; 78. Linking rod. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment 1

[0021] Please refer to Figures 1-5, this embodiment provides: a PICC catheter puncture locator for intravenous therapy outpatient service, including a support frame 1, and further including a positioning device and a stabilizing device. Among them, a moving block 2 is slidably installed on the surface of the support frame 1, and a support rod 3 is fixedly installed on the surface of the moving block 2. The positioning device includes a slide plate 41, a threaded rod 42, a bidirectional nut 43, a pressing rod 44, a transmission rod 45, a circular block 46, and an elastic plate 47. The bidirectional nut 43 drives the slide plate 41 and the threaded rod 42 to move towards each other. When the slide plate 41 moves towards each other, the distance between the slide plate 41 and the bidirectional nut 43 decreases, resulting in the circular block 46 pushing the transmission rod 45 downward when the slide plate 41 moves. When the transmission rod 45 moves downward, it pushes the pressing rod 44 downward. When the pressing rod 44 moves downward, it squeezes the elastic plate 47. The slide plate 41 is slidably installed on the surface of the support rod 3, the threaded rod 42 is fixedly installed on the surface of the slide plate 41, the bidirectional nut 43 is threadedly installed on the surface of the threaded rod 42, the elastic plate 47 is fixedly installed on the surface of the slide plate 41, the pressing rod 44 is slidably installed on the surface of the slide plate 41, the transmission rod 45 is hinged at the top of the pressing rod 44, the circular block 46 is rotatably installed on the surface of the bidirectional nut 43, and the top of the transmission rod 45 is hinged on the surface of the circular block 46, avoiding the movement of the patient's arm during catheter puncture and affecting the effect of catheter puncture.

[0022] The pressing rod 44 contacts the elastic plate 47. An anti-slip rubber is fixedly installed at the bottom of the slide plate 41. A return spring is provided between the moving block 2 and the support frame 1. The anti-slip rubber can improve the friction with the arm, and the return spring can support the moving block 2.

[0023] The stabilizing device includes an elastic telescopic plate 51, a pressing block 52, a limiting block 53, a connecting plate 54, a mounting frame 55, a storage airbag 56, an elastic sheet 57, and a convex block 58. When the free end of the elastic telescopic plate 51 moves, it drives the elastic sheet 57 to move. When the elastic sheet 57 moves, it drives the convex block 58 to move. When the convex block 58 moves, it contacts the storage airbag 56, and the convex block 58 squeezes the storage airbag 56. The non-Newtonian fluid inside the storage airbag 56 restricts the moving speed of the convex block 58. The elastic telescopic plate 51 is universally connected to the surface of the support rod 3. The connecting plate 54 is fixedly installed at the free end of the elastic telescopic plate 51. The pressing block 52 is slidably installed at the bottom of the connecting plate 54. The limiting block 53 is slidably installed at the bottom of the pressing block 52. The mounting frame 55 is fixedly installed on the surface of the elastic telescopic plate 51. The storage airbag 56 is fixedly installed on the surface of the mounting frame 55. The elastic sheet 57 is fixedly installed at the free end of the elastic telescopic plate 51. The convex block 58 is fixedly installed on the surface of the elastic sheet 57. The storage airbag 56 is internally provided with non-Newtonian fluid. A first spring is provided between the extrusion block 52 and the connecting plate 54, and a second spring is provided between the limiting block 53 and the extrusion block 52. The first spring can drive the extrusion block 52 to reset, and the second spring can drive the limiting block 53 to reset.

[0024] When the first embodiment works and a catheter puncture needs to be performed on the patient's arm, the patient's arm is placed between the sliding plates 41. By rotating the bidirectional nut 43, when the bidirectional nut 43 rotates, the threaded rod 42 will move into the interior of the bidirectional nut 43. The bidirectional nut 43 will drive the sliding plates 41 and the threaded rod 42 to move towards each other. When the sliding plates 41 move towards each other, the distance between the sliding plates 41 and the bidirectional nut 43 decreases. As a result, when the sliding plates 41 move, the circular block 46 will push the transmission rod 45 downward. The downward movement of the transmission rod 45 will push the pressing rod 44 downward. When the pressing rod 44 moves downward, it will squeeze the elastic plate 47. The pressing rod 44 will squeeze the elastic plate 47 to deform and squeeze the patient's arm, so that the patient's arm can be restricted between the sliding plates 41. Place the catheter between the extrusion blocks 52. By pressing the extrusion blocks 52, the catheter can be squeezed, so that the catheter can be restricted between the extrusion blocks 52. By pulling the extrusion blocks 52, the catheter will be driven to move. When the extrusion blocks 52 move, the free ends of the elastic telescopic plates 51 will be driven to move. By the movement of the free ends of the elastic telescopic plates 51, the elastic pieces 57 will be driven to move. When the elastic pieces 57 move, the convex blocks 58 will be driven to move. When the convex blocks 58 move, they will contact the storage airbag 56. The convex blocks 58 will squeeze the storage airbag 56. The non-Newtonian fluid inside the storage airbag 56 will restrict the moving speed of the convex blocks 58, so that the convex blocks 58 will restrict the moving speed of the elastic pieces 57 and the free ends of the elastic telescopic plates 51, avoiding the moving speed of the catheter from affecting the accuracy of catheter puncture. Embodiment 2

[0025] Please refer to Figures 1-7, on the basis of the first embodiment, in this embodiment, a detachment device and a limiting device are further included. A detachment device is provided on the surface of the connecting plate 54. The detachment device includes a hollow frame 61, a T-shaped plate 62, an expansion airbag 63, a mounting plate 64, and an L-shaped plate 65. When the T-shaped plate 62 moves, it will squeeze the inside of the hollow frame 61, so that the gas inside the hollow frame 61 will enter the inside of the expansion airbag 63 through the pipeline. The gas inside the expansion airbag 63 will expand, and the expansion of the expansion airbag 63 will push the L-shaped plate 65 to rotate. The movement of the L-shaped plate 65 will push the limiting block 53 to move further towards each other, preventing the catheter from detaching from the extrusion block 52. The hollow frame 61 is fixedly installed at the bottom of the connecting plate 54, the T-shaped plate 62 is fixedly installed on the surface of the extrusion block 52, the expansion airbag 63 is fixedly installed on the surface of the extrusion block 52, the mounting plate 64 is fixedly installed on the surface of the extrusion block 52, the L-shaped plate 65 is rotatably installed on the surface of the mounting plate 64, the T-shaped plate 62 is slidably installed inside the hollow frame 61, and the hollow frame 61 is communicated with the inside of the expansion airbag 63 through the pipeline, avoiding that when the limiting block 53 moves upward, the limiting block 53 will pull the catheter and affect the catheter puncture effect.

[0026] A torsion spring is provided between the L-shaped plate 65 and the mounting plate 64. The L-shaped plate 65 contacts the limiting block 53. The torsion spring can drive the L-shaped plate 65 to reset, and the L-shaped plate 65 can push the limiting block 53 to reset.

[0027] The limiting device includes a circular plate 71, a sleeve rod 72, a suction cup 73, a connecting block 74, a telescopic rod 75, a sealing block 76, a trapezoidal block 77, and a linkage rod 78. When the moving block 2 moves downward, it will drive the lower half of the telescopic rod 75 to move downward. When the telescopic rod 75 moves downward, it will contact the inclined surface of the trapezoidal block 77, so that the trapezoidal block 77 will push the telescopic rod 75 to slide towards the support frame 1. When the elastic telescopic rod 75 moves, it will drive the sealing block 76 to move towards the connecting block 74, so that the sealing block 76 will seal the connecting block 74. At the same time, when the moving block 2 moves downward, it will drive the linkage rod 78 to move downward. When the linkage rod 78 moves downward, it will push the sleeve rod 72 and the suction cup 73 to move downward. The circular plate 71 is fixedly installed on the surface of the support frame 1, the sleeve rod 72 slidably penetrates the bottom of the support frame 1, the suction cup 73 is fixedly installed at the bottom of the sleeve rod 72, the connecting block 74 is fixedly installed on the surface of the support frame 1, the free end of the telescopic rod 75 slidably penetrates the connecting block 74, the telescopic rod 75 slidably penetrates the moving block 2, the trapezoidal block 77 is fixedly installed on the top of the circular plate 71, the sealing block 76 is fixedly installed on the surface of the telescopic rod 75, and the linkage rod 78 is fixedly installed at the bottom of the moving block 2, avoiding that when the catheter is punctured, the movement of the support frame 1 will affect the catheter puncture effect and safety.

[0028] A No. 3 spring is arranged between the telescopic rod 75 and the moving block 2, the bottom of the telescopic rod 75 contacts the trapezoidal block 77, the linkage rod 78 contacts the sleeve rod 72, a No. 4 spring is arranged between the sleeve rod 72 and the support frame 1, and the interior of the support frame 1 is hollow, and the interior of the suction cup 73 is connected with the interior of the support frame 1 through the air pipe, so that the inclined surface of the trapezoidal block 77 can push the telescopic rod 75 to move, and the sleeve rod 72 can be driven to reset upward through the No. 4 spring, and the connecting block 74 is connected with the interior of the support frame 1.

[0029] When the second embodiment is working, the extrusion block 52 will drive the limiting block 53 to move when it moves, and the extrusion block 52 will drive the T-shaped plate 62 to move when it moves. When the T-shaped plate 62 moves, it will squeeze the inside of the hollow frame 61, so that the gas inside the hollow frame 61 will enter the inside of the expansion airbag 63 through the pipeline, and the gas inside the expansion airbag 63 will expand. The expansion of the expansion airbag 63 will push the L-shaped plate 65 to rotate, and the movement of the L-shaped plate 65 will push the limiting block 53 to move further toward each other, preventing the catheter from detaching from the extrusion block 52. At the same time, when the No. 1 spring drives the extrusion block 52 to move in reverse, the extrusion block 52 will drive the T-shaped plate 62 to reset, so that the hollow frame 61 will absorb the gas inside the expansion airbag 63 through the pipeline, and the torsion spring will drive the L-shaped plate 65 to reset, so that the No. 2 spring will drive the limiting block 53 to reset, so as to prevent the free end of the elastic telescopic plate 51 and the extrusion block 52 from pulling the wire when moving upward and resetting; When the slide plate 41 clamps the arm, the gravity of the arm will press the slide plate 41, the support rod 3 and the moving block 2 to move downward. When the moving block 2 moves downward, it will drive the lower half of the telescopic rod 75 to move downward. When the telescopic rod 75 moves downward, it will contact the inclined surface of the trapezoidal block 77, so that the trapezoidal block 77 will push the telescopic rod 75 to slide in the direction of the support frame 1. When the elastic telescopic rod 75 moves, it will drive the sealing block 76 to move in the direction of the connecting block 74, so that the sealing block 76 will seal the connecting block 74. At the same time, when the moving block 2 moves downward, it will drive the linkage rod 78 to move downward, and the linkage rod 78 will move downward. When the rod 78 moves downward, it will push the sleeve rod 72 and the suction cup 73 to move downward. After the suction cup 73 moves downward, it will be adsorbed on the ground to further restrict the movement of the support frame 1. After the arm is detached from the slide plate 41, the moving block 2 will be driven to move upward through the reset spring, and the No. 3 spring will drive the telescopic rod 75 to reset. The telescopic rod 75 will drive the sealing block 76 to detach from the connecting block 74 to release the seal of the connecting block 74. Air can be sucked into the interior of the support frame 1 through the connecting block 74, and the gas inside the support frame 1 will enter the interior of the suction cup 73 through the air pipe, thereby releasing the suction cup 73 from the ground.

[0030] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0031] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A PICC catheter puncture locator for the intravenous therapy outpatient clinic, including a support frame (1), characterized in that: It also includes a positioning device, a stabilizing device, and a limiting device; Among them, a moving block (2) is slidably mounted on the surface of the support frame (1), a support rod (3) is fixedly mounted on the surface of the moving block (2), the positioning device includes a sliding plate (41), a threaded rod (42), a bidirectional nut (43), a pressing rod (44), a transmission rod (45), a circular block (46), and an elastic plate (47). The sliding plate (41) is slidably mounted on the surface of the support rod (3), the threaded rod (42) is fixedly mounted on the surface of the sliding plate (41), the bidirectional nut (43) is threadedly mounted on the surface of the threaded rod (42), the elastic plate (47) is fixedly mounted on the surface of the sliding plate (41), the pressing rod (44) is slidably mounted on the surface of the sliding plate (41), the transmission rod (45) is hinged at the top of the pressing rod (44), the circular block (46) is rotatably mounted on the surface of the bidirectional nut (43), and the top of the transmission rod (45) is hinged on the surface of the circular block (46).

2. The PICC catheter puncture locator for the intravenous therapy outpatient clinic according to claim 1, wherein: The pressing rod (44) contacts the elastic plate (47), an anti-slip rubber is fixedly mounted at the bottom of the sliding plate (41), and a return spring is provided between the moving block (2) and the support frame (1).

3. The PICC catheter puncture locator for intravenous therapy outpatient service according to claim 2, wherein: The stabilizing device includes an elastic telescopic plate (51), a pressing block (52), a limiting block (53), a connecting plate (54), a mounting frame (55), a storage airbag (56), an elastic sheet (57), and a convex block (58). The elastic telescopic plate (51) is universally connected to the surface of the support rod (3), the connecting plate (54) is fixedly mounted at the free end of the elastic telescopic plate (51), the pressing block (52) is slidably mounted at the bottom of the connecting plate (54), the limiting block (53) is slidably mounted at the bottom of the pressing block (52), the mounting frame (55) is fixedly mounted on the surface of the elastic telescopic plate (51), the storage airbag (56) is fixedly mounted on the surface of the mounting frame (55), the elastic sheet (57) is fixedly mounted at the free end of the elastic telescopic plate (51), the convex block (58) is fixedly mounted on the surface of the elastic sheet (57), and a non-Newtonian fluid is provided inside the storage airbag (56).

4. The PICC catheter puncture locator for intravenous therapy outpatient service according to claim 3, wherein: A first spring is provided between the pressing block (52) and the connecting plate (54), and a second spring is provided between the limiting block (53) and the pressing block (52).

5. The PICC catheter puncture locator for intravenous therapy outpatient service according to claim 4, characterized in that: A detachment device is provided on the surface of the connecting plate (54). The detachment device includes a hollow frame (61), a T-shaped plate (62), an expansion airbag (63), a mounting plate (64), and an L-shaped plate (65). The hollow frame (61) is fixedly mounted at the bottom of the connecting plate (54), the T-shaped plate (62) is fixedly mounted on the surface of the pressing block (52), the expansion airbag (63) is fixedly mounted on the surface of the pressing block (52), the mounting plate (64) is fixedly mounted on the surface of the pressing block (52), the L-shaped plate (65) is rotatably mounted on the surface of the mounting plate (64), the T-shaped plate (62) is slidably mounted inside the hollow frame (61), and the hollow frame (61) is communicated with the inside of the expansion airbag (63) through a pipeline.

6. The PICC catheter puncture locator for intravenous therapy outpatient service according to claim 5, wherein: A torsion spring is arranged between the L-shaped plate (65) and the mounting plate (64), and the L-shaped plate (65) contacts the limiting block (53).

7. The PICC catheter puncture locator for intravenous therapy outpatient service according to claim 6, characterized in that: The limiting device includes a circular plate (71), a sleeve rod (72), a suction cup (73), a connecting block (74), a telescopic rod (75), a sealing block (76), a trapezoidal block (77) and a linkage rod (78). The circular plate (71) is fixedly installed on the surface of the support frame (1). The sleeve rod (72) slidably penetrates through the bottom of the support frame (1). The suction cup (73) is fixedly installed at the bottom of the sleeve rod (72). The connecting block (74) is fixedly installed on the surface of the support frame (1). The free end of the telescopic rod (75) slidably penetrates through the connecting block (74). The telescopic rod (75) slidably penetrates through the moving block (2). The trapezoidal block (77) is fixedly installed on the top of the circular plate (71). The sealing block (76) is fixedly installed on the surface of the telescopic rod (75). The linkage rod (78) is fixedly installed at the bottom of the moving block (2).

8. The PICC catheter puncture locator for intravenous therapy outpatient service according to claim 7, wherein: A third spring is arranged between the telescopic rod (75) and the moving block (2). The bottom of the telescopic rod (75) contacts the trapezoidal block (77). The linkage rod (78) contacts the sleeve rod (72). A fourth spring is arranged between the sleeve rod (72) and the support frame (1). The interior of the support frame (1) is hollow. The interior of the suction cup (73) is communicated with the interior of the support frame (1) through an air pipe.

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