Auxiliary developing device and method for internal arteriovenous fistula puncture blood vessel

Abstract

The invention relates to the technical field of blood vessel developing, and discloses an internal arteriovenous fistula puncture blood vessel auxiliary developing device and method.The internal arteriovenous fistula puncture blood vessel auxiliary developing device comprises a base, a fixedly-connected clamping base is arranged at the top of the base, fixedly-connected mounting boxes are arranged on the two opposite side walls of the clamping base, and the bottoms of the mounting boxes are fixedly connected with the top of the base; wherein a first supporting plate fixedly connected is arranged on the side wall of one mounting box, the bottom of the first supporting plate is fixedly connected with the top of the base, movable clamping frames are symmetrically arranged at the top of the base, a rotatable adjusting mechanism is arranged at the top of the base and comprises a rotatable driving shaft, a first external spline and a gear, and the driving shaft is located in the mounting box. The projection mechanism can present the real blood vessel direction of the patient in real time.

Description

Technical Field

[0001] The present invention relates to the technical field of blood vessel development, and in particular to an auxiliary development device and method for arteriovenous fistula puncture blood vessels. Background Art

[0002] Hemodialysis is one of the most effective means of treating end-stage renal disease. Maintenance hemodialysis patients need to undergo hemodialysis 2-3 times a week, each time for 4 hours. Currently, 90% of hemodialysis patients undergo dialysis treatment through arteriovenous fistula puncture. However, some patients have poor vascular conditions of the fistula, which greatly increases the difficulty of fistula puncture. Puncture failure may lead to local hematoma, mis-perforation of the artery, increased pain, compression of the fistula and vascular occlusion, making it impossible to continue hemodialysis in the short term, and even increasing the frequency of surgery and the financial burden on patients. Therefore, an auxiliary imaging device is needed to reduce the patient's puncture pain and unnecessary doctor-patient conflicts. Summary of the Invention

[0003] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an arteriovenous fistula puncture blood vessel auxiliary development device and method.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: An arteriovenous fistula puncture blood vessel auxiliary development device includes a base, a fixedly connected clamping seat is provided on the top of the base, and two opposite side walls of the clamping seat are provided with fixedly connected mounting boxes, the bottom of the mounting box is fixedly connected to the top of the base, one of the side walls of the mounting box is provided with a fixedly connected first support plate, the bottom of the first support plate is fixedly connected to the top of the base, and a movable clamping frame is symmetrically provided on the top of the base. A rotatable adjustment mechanism is provided on the top of the base, and the adjustment mechanism includes a rotatable drive shaft, a first external spline and a gear. The drive shaft is located inside the mounting box. The first external spline and the gear are located outside the mounting box; a first tension spring rod is fixedly connected to the top of the base; a second support plate is fixedly connected to the top of the first tension spring rod; a rack is fixedly connected to the bottom of the second support plate; the rack is meshed with the gear; a movable projection mechanism is provided between the clamping frames; the projection mechanism includes a movable vascular developer and a rotatable arc plate; the arc plate is located above the vascular developer.

[0005] As a further solution of the present invention, a first sliding groove is provided on the top of the first support plate, a rotatable threaded rod is provided in the first sliding groove, a first fixedly connected knob is provided at the port where the threaded rod extends to the outside of the first support plate, a clamping frame with threaded matching is symmetrically provided on the threaded rod, a fixedly connected electric cylinder is provided on the top of the clamping frame, a first fixedly connected arc block is provided at the port where the telescopic rod of the electric cylinder passes through the clamping frame, and a second elastically connected arc block is provided at the bottom of the first arc block.

[0006] As a further solution of the present invention, the adjustment mechanism includes a traction roller, and a rotatable traction roller is arrayed in the mounting box, wherein a rotatable collecting roller is provided in the mounting box away from the threaded rod, and a rotatable drive shaft is provided in the mounting box close to the threaded rod, the collecting roller and the drive shaft are both located below the traction roller, a disposable blood collection pad is wrapped around the drive shaft, and a first external spline is provided for a fixed connection at the port where the drive shaft extends to the outside of the mounting box.

[0007] As a further solution of the present invention, a second slide groove is provided on the top of the base, a sliding first bracket is provided in the second slide groove, the first bracket is symmetrically provided with a rotatable connecting shaft, a fixedly connected synchronous wheel and an internal spline are provided on the connecting shaft, a transmittable synchronous belt is provided between the two symmetrically distributed synchronous wheels, a fixedly connected second knob is provided on the connecting shaft close to the first external spline, and the synchronous belt is located between the internal spline and the second knob.

[0008] As a further solution of the present invention, a second bracket is fixedly connected to the top of the base, the second bracket is close to the first support plate, the second bracket is provided with a second external spline and a gear, the second external spline is close to the synchronous belt, and a third support plate is fixedly connected at the center of the top of the installation box close to the threaded rod, a first groove and a third slide groove are provided in the third support plate, a fixedly connected rotating shaft is provided in the first groove, a rotatable fourth support plate is provided on the rotating shaft, and a first sliding seat and a second sliding seat are symmetrically fixedly connected at the bottom of the fourth support plate, and the first sliding seat is slidably connected to the top of the second support plate.

[0009] As a further solution of the present invention, the projection mechanism includes a movable projection box, a first connecting rod fixedly connected to the side wall of the projection box, the first connecting rod is slidably connected to the third slide groove, a second tension spring rod fixedly connected to the inner wall of the first arc block is provided, the other end of the second tension spring rod is fixedly connected to the side wall of the projection box, the interior of the projection box is hollow, and a circular hole is provided at the bottom of the projection box. A movable third arc block and a fixedly connected first rotating seat are axially provided in the projection box, the first rotating seat is located above the third arc block, the third arc block is located above the circular hole, and the axially distributed third arc blocks abut against each other.

[0010] As a further solution of the present invention, the arc-shaped end of the third arc-shaped block is provided with a fixedly connected third tension spring rod, the other end of the third tension spring rod is fixedly connected to the inner wall of the projection box, the top of the third arc-shaped block is provided with a fixedly connected inclined block and a second rotating seat, a rotatable rotating rod is provided in the first rotating seat, the bottom of the rotating rod is rotatably connected to the second rotating seat, a movable vascular imaging instrument is provided in the projection box, the vascular imaging instrument is located inside the rotating rod, and an axially distributed first fixed block is fixed on the top of the vascular imaging instrument, and the first fixed block abuts against the rotating rod.

[0011] As a further solution of the present invention, a first fixedly connected telescopic tube is provided at the center of the top of the vascular angiography instrument, a second slidable telescopic tube is provided inside the first telescopic tube, a slidable connecting column is provided inside the second telescopic tube, a fixedly connected sliding block is provided on the top of the connecting column, the sliding block is slidably connected to the second sliding seat, a fixedly connected ring is sleeved on the outer wall of the second telescopic tube, and the ring is slidably connected to the inner wall of the first telescopic tube.

[0012] As a further solution of the present invention, the outer wall of the connecting column is fixed with an axially distributed second fixed block, the second fixed block is located at the lower end of the connecting column, the outer wall of the second telescopic tube is fixed with an axially distributed third fixed block, the third fixed block is located at the lower end of the second telescopic tube, a rotatable arc plate is axially provided in the first telescopic tube, and an array-distributed second groove is provided on the outer wall of the arc plate. The second fixed block and the third fixed block are respectively provided with a rotatable second connecting rod and a third connecting rod, and the other ends of the second connecting rod and the third connecting rod are rotatably connected to the inner wall of the arc plate.

[0013] A method for using an arteriovenous fistula puncture and blood vessel auxiliary development device, comprising the following steps: an operator rotates a first knob, which causes a threaded rod to rotate accordingly. The rotation of the threaded rod drives a clamping frame to move. The position of the clamping frame is adjusted according to the size of the patient's arm. The first bracket is then slid toward the installation box. The first external spline and the second external spline are inserted into symmetrically distributed internal splines. The second knob is rotated, which causes the first external spline to rotate accordingly, driving a traction roller to rotate. The disposable blood collection pad wrapped around the drive shaft is then unfolded and replaced, and then reeled in by a collection roller. At the same time, the rotation of the synchronous wheel drives the synchronous belt transmission, and the second external spline also rotates accordingly, driving the gear to rotate, and the rack also moves upward, driving the second support plate to move upward, squeezing the fourth support plate during the movement of the second support plate, the fourth support plate rotates, and the fourth support plate squeezes the connecting column downward. The connecting column moves downward and drives the second connecting rod and the third connecting rod to rotate, and the arc plate also moves toward the inner wall of the first telescopic tube. The arc plate squeezes the inner wall of the first telescopic tube, and the position of the connecting column is fixed; The fourth support plate continues to squeeze the connecting column, and the first telescopic tube drives the angiography instrument downward. As the angiography instrument moves toward the outside of the projection box, it squeezes the inclined block. The third curved block moves toward the inner wall of the projection box, compressing the third tension spring rod, and the angiography instrument is exposed from the circular hole. The patient's arm is placed on the disposable blood collection pad above the clamping seat, the electric cylinder is started, the telescopic rod of the electric cylinder is stretched, the first arc block moves toward the patient's arm, and the second arc block squeezes the patient's arm, and the patient's arm is fixed. At the same time, when the first arc block moves downward, the projection box is driven to move downward, and the second telescopic tube slides along the inner wall of the first telescopic tube; When the patient's puncture is completed, the second knob is pulled outward, the first external spline and the second external spline are separated from the symmetrically distributed internal spline, the first tension spring rod drives the second support plate to move downward, and drives the angiography instrument to move toward the inside of the projection box, the first fixed block squeezes the rotating rod, and the rotating rod rotates to drive the third arc block to move closer to each other to block the circular hole.

[0014] The beneficial effects of the present invention are: 1. Setting up the adjustment mechanism can facilitate the replacement of disposable blood collection pads. By turning the second knob, the first external spline also rotates, driving the traction roller to rotate, and the disposable blood collection pad wrapped on the drive shaft is then unfolded and replaced, and is reeled up by the collecting roller. At the same time, the second external spline also rotates, driving the gear to rotate, and the rack also moves upward, driving the second support plate to move upward, and the fourth support plate rotates, and the fourth support plate squeezes the projection mechanism downward, exposing the vascular developer, ensuring the synchronization of vascular projection and blood collection pad replacement, and displaying the patient's true blood vessel direction in real time and non-contact through light and shadow technology, so as to prepare for puncture in advance and improve the aseptic puncture execution rate.

[0015] 2. The projection mechanism is set up to present the patient's true blood vessel direction in real time. The fourth support plate continues to squeeze the connecting column, and the first telescopic tube drives the vascular developer to move downward. During the movement of the vascular developer toward the outside of the projection box, the inclined block is squeezed, and the third curved block moves toward the inner wall of the projection box. The third tension spring rod is compressed, and the vascular developer is exposed from the circular hole. At the same time, during the downward movement of the first curved block, the projection box is driven downward. The vascular developer and the first curved block move synchronously to adapt to patients of different body sizes, ensuring that the blood vessel direction of each patient can be clearly projected, thereby improving the work efficiency and accuracy of nursing staff. After the puncture is completed, the vascular developer is moved back into the projection box to prevent bumps and affect subsequent use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of an arteriovenous fistula puncture blood vessel auxiliary development device proposed by the present invention; Figure 2 This is a side view of an arteriovenous fistula puncture blood vessel auxiliary development device proposed by the present invention; Figure 3 This is a partial structural diagram of an arteriovenous fistula puncture blood vessel auxiliary development device proposed by the present invention; Figure 4 for Figure 1 A magnified schematic diagram of part A; Figure 5 This is a top view of an arteriovenous fistula puncture blood vessel auxiliary development device proposed by the present invention; Figure 6 This is a bottom view of the projection box in the arteriovenous fistula puncture blood vessel auxiliary development device proposed by the present invention; Figure 7 This is a schematic diagram of the internal structure of a projection box in an arteriovenous fistula puncture blood vessel auxiliary development device proposed by the present invention; Figure 8 for Figure 7 An enlarged schematic diagram of part B; Figure 9 This is a schematic structural diagram of the third arc-shaped block in the arteriovenous fistula puncture blood vessel auxiliary development device proposed by the present invention; Figure 10 This is a schematic diagram of the structure of a blood vessel visualization instrument in an arteriovenous fistula puncture blood vessel auxiliary visualization device proposed by the present invention; Figure 11 This is a schematic diagram of the internal structure of the first telescopic tube in the arteriovenous fistula puncture blood vessel auxiliary development device proposed by the present invention.

[0017] In the figure: 1, base; 2, clamping frame; 3, adjustment mechanism; 4, second support plate; 5, projection mechanism; 11, clamping seat; 12, mounting box; 13, first support plate; 14, first slide groove; 15, threaded rod; 16, first knob; 17, second slide groove; 21, electric cylinder; 22, first arc block; 23, second arc block; 24, second tension spring rod; 31, traction roller; 32, first bracket; 41, rack; 42, first tension spring rod; 43, third support plate; 44, fourth support plate; 51, projection box; 52, third arc block; 53, angiography instrument; 54, second telescopic tube; 311, collecting roller; 312, driving shaft; 313, first external spline; 321, connecting shaft; 322, same Step wheel; 323, synchronous belt; 324, internal spline; 325, second bracket; 326, second external spline; 327, gear; 328, second knob; 431, first groove; 432, third slide groove; 441, first sliding seat; 442, second sliding seat; 511, circular hole; 512, first connecting rod; 513, first rotating seat; 514, rotating rod; 521, third tension spring rod; 522, inclined block; 523, second rotating seat; 531, first fixed block; 532, first telescopic tube; 541, connecting column; 542, sliding block; 543, circular ring; 544, second fixed block; 545, third fixed block; 546, second connecting rod; 547, third connecting rod; 548, curved plate. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0020] Refer to the attached Figure 1 -Attached Figure 11 , an arteriovenous fistula puncture blood vessel auxiliary development device includes a base 1, a fixedly connected clamping seat 11 is provided on the top of the base 1, and two opposite side walls of the clamping seat 11 are provided with a fixedly connected installation box 12, the bottom of the installation box 12 is fixedly connected to the top of the base 1, and one of the side walls of the installation box 12 is provided with a fixedly connected first support plate 13, the bottom of the first support plate 13 is fixedly connected to the top of the base 1, and a first slide groove 14 is opened on the top of the first support plate 13, and a rotatable threaded rod 15 is provided in the first slide groove 14, and the threaded rod 15 extends to the end outside the first support plate 13 and is provided with a fixedly connected first knob 16. When the first knob 16 is turned, the threaded rod 15 also rotates accordingly.

[0021] A clamping frame 2 with threaded fitting is symmetrically provided on the threaded rod 15. The clamping frame 2 is L-shaped. A fixedly connected electric cylinder 21 is provided on the top of the clamping frame 2. The telescopic rod of the electric cylinder 21 passes through the port of the clamping frame 2 and is provided with a fixedly connected first arc block 22. A second arc block 23 with an elastic connection is provided at the bottom of the first arc block 22. The rotation of the threaded rod 15 drives the clamping frame 2 to move, which can adapt to arms of different sizes.

[0022] A rotatable adjustment mechanism 3 is provided on the top of the base 1, and the adjustment mechanism 3 includes a traction roller 31. A rotatable traction roller 31 is arrayed in the installation box 12, wherein a rotatable collecting roller 311 is provided in the installation box 12 away from the threaded rod 15, and a rotatable driving shaft 312 is provided in the installation box 12 close to the threaded rod 15. The collecting roller 311 and the driving shaft 312 are both located below the traction roller 31, and a disposable blood collection pad is wrapped around the driving shaft 312. The driving shaft 312 extends to the port outside the installation box 12 and is provided with a first external spline 313 fixedly connected thereto. The rotation of the first external spline 313 drives the driving shaft 312 to rotate.

[0023] A second slide groove 17 is provided on the top of the base 1, and a slidable first bracket 32 ​​is provided in the second slide groove 17. The first bracket 32 ​​is symmetrically provided with a rotatable connecting shaft 321, and a fixedly connected synchronous wheel 322 and an internal spline 324 are provided on the connecting shaft 321. A transmittable synchronous belt 323 is provided between the two symmetrically distributed synchronous wheels 322, wherein a fixedly connected second knob 328 is provided on the connecting shaft 321 near the first external spline 313, and the synchronous belt 323 is located between the internal spline 324 and the second knob 328. When the second knob 328 is rotated, the synchronous wheel 322 and the internal spline 324 also rotate accordingly.

[0024] A second bracket 325 is fixedly connected to the top of the base 1, and the second bracket 325 is close to the first support plate 13. A second external spline 326 and a gear 327 are provided on the second bracket 325. The second external spline 326 is close to the synchronous belt 323. A first tension spring rod 42 is fixedly connected to the top of the base 1. A second support plate 4 is fixedly connected to the top of the first tension spring rod 42. The second support plate 4 is L-shaped. A rack 41 is fixedly connected to the bottom of the second support plate 4. The rack 41 is engaged with the gear 327, and the gear 327 rotates to drive the rack 41 to move upward.

[0025] A third support plate 43 is fixedly provided at the center of the top of the installation box 12 near the threaded rod 15, and a first groove 431 and a third slide groove 432 are provided in the third support plate 43. A fixed rotating shaft is provided in the first groove 431, and a rotatable fourth support plate 44 is provided on the rotating shaft. A first sliding seat 441 and a second sliding seat 442 are fixedly provided at the bottom of the fourth support plate 44 symmetrically, and the first sliding seat 441 is slidably connected to the top of the second support plate 4, and a movable projection mechanism 5 is provided between the clamping frame 2.

[0026] The projection mechanism 5 includes a movable projection box 51, a side wall of which is provided with a fixedly connected first connecting rod 512, the first connecting rod 512 is slidably connected to the third slide groove 432, the inner wall of the first arc block 22 is provided with a fixedly connected second tension spring rod 24, the other end of the second tension spring rod 24 is fixedly connected to the side wall of the projection box 51, the interior of the projection box 51 is hollow, and a circular hole 511 is provided at the bottom of the projection box 51, a movable third arc block 52 and a fixedly connected first rotating seat 513 are axially provided in the projection box 51, the first rotating seat 513 is located above the third arc block 52, and the third arc block 52 is located above the circular hole 511. The axially distributed third arc blocks 52 abut against each other and can be used to block the circular hole 511.

[0027] The arc end of the third arc block 52 is provided with a fixedly connected third tension spring rod 521, and the other end of the third tension spring rod 521 is fixedly connected to the inner wall of the projection box 51. The top of the third arc block 52 is provided with a fixedly connected inclined block 522 and a second rotating seat 523. A rotatable rotating rod 514 is provided in the first rotating seat 513, and the bottom of the rotating rod 514 is rotatably connected to the second rotating seat 523. A movable vascular developer 53 is provided in the projection box 51. The vascular developer 53 is located inside the rotating rod 514. An axially distributed first fixed block 531 is fixed on the top of the vascular developer 53. The first fixed block 531 abuts against the rotating rod 514. When the vascular developer 53 moves upward, the first fixed block 531 squeezes the rotating rod 514, and the rotating rod 514 rotates to drive the third arc blocks 52 to approach each other.

[0028] A first telescopic tube 532 is fixedly connected at the center of the top of the vascular imaging instrument 53. A second telescopic tube 54 is slidably provided in the first telescopic tube 532. A slidable connecting column 541 is provided in the second telescopic tube 54. A fixed sliding block 542 is provided on the top of the connecting column 541. The sliding block 542 is slidably connected to the second sliding seat 442. A fixed ring 543 is sleeved on the outer wall of the second telescopic tube 54. The ring 543 is slidably connected to the inner wall of the first telescopic tube 532. The first arc block 22 moves downward, driving the projection box 51 to move downward.

[0029] An axially distributed second fixed block 544 is fixed to the outer wall of the connecting column 541, and the second fixed block 544 is located at the lower end of the connecting column 541. An axially distributed third fixed block 545 is fixed to the outer wall of the second telescopic tube 54, and the third fixed block 545 is located at the lower end of the second telescopic tube 54. A rotatable arc plate 548 is axially provided in the first telescopic tube 532, and an array-distributed second groove is provided on the outer wall of the arc plate 548. A rotatable second connecting rod 546 and a third connecting rod 547 are respectively provided on the second fixed block 544 and the third fixed block 545. The other ends of the second connecting rod 546 and the third connecting rod 547 are rotatably connected to the inner wall of the arc plate 548. The connecting column 541 moves downward, driving the second connecting rod 546 and the third connecting rod 547 to rotate, and the arc plate 548 also moves toward the inner wall of the first telescopic tube 533. The arc plate 548 squeezes the inner wall of the first telescopic tube 532, and the position of the connecting column 541 is fixed.

[0030] A method for using an arteriovenous fistula puncture blood vessel auxiliary development device comprises the following steps: During use, the operator rotates the first knob 16, and the threaded rod 15 rotates accordingly. The rotation of the threaded rod 15 drives the clamping frame 2 to move. The position of the clamping frame 2 is adjusted according to the size of the patient's arm. Then, the first bracket 32 ​​is slid toward the mounting box 12. The first external spline 313 and the second external spline 326 are inserted into the symmetrically distributed internal spline 324. The second knob 328 is turned, and the first external spline 313 also rotates accordingly, driving the traction roller 31 to rotate. The disposable blood collection pad wrapped on the drive shaft 312 is then unfolded and replaced, and is reeled up by the collection roller 311. At the same time, the synchronous wheel 322 rotates to drive the synchronous belt 323, and the second external spline 326 also rotates, driving the gear 327 to rotate, and the rack 41 also moves upward, driving the second support plate 4 to move upward. During the movement of the second support plate 4, the fourth support plate 44 is squeezed, and the fourth support plate 44 rotates. The fourth support plate 44 squeezes the connecting column 541 downward, and the connecting column 541 moves downward to drive the second connecting rod 546 and the third connecting rod 547 to rotate. The curved plate 548 also moves toward the inner wall of the first telescopic tube 532. The curved plate 548 squeezes the inner wall of the first telescopic tube 532, and the position of the connecting column 541 is fixed. The fourth support plate 44 continues to squeeze the connecting column 541 , and the first telescopic tube 532 drives the angiography instrument 53 downward. As the angiography instrument 53 moves toward the outside of the projection box 51 , it squeezes the inclined block 522 . The third curved block 52 moves toward the inner wall of the projection box 51 , compressing the third tension spring rod 521 , and the angiography instrument 53 is exposed from the circular hole 511 . The patient's arm is placed on the disposable blood collection pad above the clamping seat 11, and the electric cylinder 21 is activated. The telescopic rod of the electric cylinder 21 is stretched, and the first arc block 22 moves toward the patient's arm. The second arc block 23 squeezes the patient's arm, and the patient's arm is fixed. At the same time, as the first arc block 22 moves downward, it drives the projection box 51 to move downward, and the second telescopic tube 54 slides along the inner wall of the first telescopic tube 532, ensuring that patients of different body sizes can be projected clearly, showing the patient's true blood vessel shape, and facilitating arteriovenous puncture by nurses of different seniority; When the patient's puncture is completed, the second knob 328 is pulled outward, and the first external spline 313 and the second external spline 326 are separated from the symmetrically distributed internal spline 324. The first tension spring rod 42 drives the second support plate 4 to move downward, driving the vascular imaging instrument 53 to move toward the inside of the projection box 51. The first fixed block 531 squeezes the rotating rod 514, and the rotating rod 514 rotates to drive the third arc block 52 to move closer to each other to block the circular hole 511, which can protect the vascular imaging instrument 53 and prevent the vascular imaging instrument 53 from bumping and affecting the projection effect.

[0031] From the above description, it can be seen that in the above embodiment of the present invention, the first external spline 313 rotates, driving the traction roller 31 to rotate, and the disposable blood collection pad wrapped on the drive shaft 312 is unfolded and replaced, and is reeled up by the collecting roller 311. The gear 327 rotates, driving the rack 41 to move upward, and the fourth support plate 44 continues to squeeze the connecting column 541. The first telescopic tube 532 drives the vascular developer 53 to move downward, and the vascular developer 53 is exposed from the circular hole 511, presenting the patient's real blood vessel shape in real time, thereby improving the work efficiency and accuracy of nursing staff and facilitating nursing staff of different seniority to perform arteriovenous puncture.

[0032] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An arteriovenous fistula puncture blood vessel auxiliary development device, comprising a base (1), characterized in that: The top of the base (1) is provided with a fixedly connected clamping seat (11), and two opposite side walls of the clamping seat (11) are provided with fixedly connected mounting boxes (12), the bottom of the mounting box (12) is fixedly connected to the top of the base (1), one of the side walls of the mounting box (12) is provided with a fixedly connected first support plate (13), the bottom of the first support plate (13) is fixedly connected to the top of the base (1), and the top of the base (1) is symmetrically provided with a movable clamping frame (2), and the top of the base (1) is provided with a rotatable adjustment mechanism (3), the adjustment mechanism (3) includes a rotatable drive shaft (312), a first external spline (313) and a gear (327), and the drive shaft (312) is located inside the mounting box (12); The first external spline (313) and the gear (327) are located outside the mounting box (12); a first tension spring rod (42) is fixedly connected to the top of the base (1); a second support plate (4) is fixedly connected to the top of the first tension spring rod (42); a rack (41) is fixedly connected to the bottom of the second support plate (4); the rack (41) is meshed with the gear (327); a movable projection mechanism (5) is provided between the clamping frame (2); the projection mechanism (5) includes a movable vascular imaging instrument (53) and a rotatable arc plate (548); the arc plate (548) is located above the vascular imaging instrument (53).

2. The arteriovenous fistula puncture blood vessel auxiliary development device according to claim 1, characterized in that: A first sliding groove (14) is provided at the top of the first support plate (13), a rotatable threaded rod (15) is provided in the first sliding groove (14), a first knob (16) is fixedly connected to the end of the threaded rod (15) extending to the outside of the first support plate (13), a clamping frame (2) with threaded engagement is symmetrically provided on the threaded rod (15), a fixedly connected electric cylinder (21) is provided at the top of the clamping frame (2), a first arc block (22) is fixedly connected to the end of the telescopic rod of the electric cylinder (21) passing through the clamping frame (2), and a second arc block (23) is elastically connected to the bottom of the first arc block (22).

3. The device for assisting the development of arteriovenous fistula puncture vessels according to claim 2, characterized in that: The adjustment mechanism (3) comprises a traction roller (31), wherein an array of rotatable traction rollers (31) is provided in the mounting box (12), wherein a rotatable collecting roller (311) is provided in the mounting box (12) away from the threaded rod (15), and a rotatable driving shaft (312) is provided in the mounting box (12) close to the threaded rod (15), wherein both the collecting roller (311) and the driving shaft (312) are located below the traction roller (31), a disposable blood collection pad is wound around the driving shaft (312), and a first external spline (313) is provided at a port where the driving shaft (312) extends to the outside of the mounting box (12).

4. The arteriovenous fistula puncture blood vessel auxiliary development device according to claim 3, characterized in that: A second slide groove (17) is provided on the top of the base (1), a slidable first bracket (32) is provided in the second slide groove (17), the first bracket (32) is symmetrically provided with a rotatable connecting shaft (321), a fixedly connected synchronous wheel (322) and an internal spline (324) are provided on the connecting shaft (321), a transmittable synchronous belt (323) is provided between the two symmetrically distributed synchronous wheels (322), a fixedly connected second knob (328) is provided on the connecting shaft (321) close to the first external spline (313), and the synchronous belt (323) is located between the internal spline (324) and the second knob (328).

5. The arteriovenous fistula puncture blood vessel auxiliary development device according to claim 4, characterized in that: A second bracket (325) is fixedly connected to the top of the base (1), the second bracket (325) is close to the first support plate (13), a second external spline (326) and a gear (327) are provided on the second bracket (325), the second external spline (326) is close to the synchronous belt (323), a third bracket (43) is fixedly connected to the top center of the installation box (12) close to the threaded rod (15), a first groove (431) and a third slide groove (432) are provided in the third bracket (43), a fixed rotating shaft is provided in the first groove (431), a rotatable fourth bracket (44) is provided on the rotating shaft, a first sliding seat (441) and a second sliding seat (442) are fixedly connected to the bottom of the fourth bracket (44), and the first sliding seat (441) is slidably connected to the top of the second bracket (4).

6. The arteriovenous fistula puncture blood vessel auxiliary development device according to claim 5, characterized in that: The projection mechanism (5) includes a movable projection box (51), a first connecting rod (512) fixedly connected to the side wall of the projection box (51), the first connecting rod (512) being slidably connected to the third sliding groove (432), a second tension spring rod (24) fixedly connected to the inner wall of the first arc block (22), the other end of the second tension spring rod (24) being fixedly connected to the side wall of the projection box (51), the interior of the projection box (51) being hollow, a circular hole (511) being opened at the bottom of the projection box (51), a movable third arc block (52) and a fixedly connected first rotating seat (513) being axially arranged in the projection box (51), the first rotating seat (513) being located above the third arc block (52), the third arc block (52) being located above the circular hole (511), and the axially distributed third arc blocks (52) being in contact with each other.

7. The arteriovenous fistula puncture blood vessel auxiliary development device according to claim 6, characterized in that: The arc-shaped end of the third arc-shaped block (52) is provided with a fixedly connected third tension spring rod (521), the other end of the third tension spring rod (521) is fixedly connected to the inner wall of the projection box (51), the top of the third arc-shaped block (52) is provided with a fixedly connected inclined block (522) and a second rotating seat (523), a rotatable rotating rod (514) is provided in the first rotating seat (513), the bottom of the rotating rod (514) is rotatably connected to the second rotating seat (523), a movable vascular imaging instrument (53) is provided in the projection box (51), the vascular imaging instrument (53) is located inside the rotating rod (514), and an axially distributed first fixed block (531) is fixed on the top of the vascular imaging instrument (53), and the first fixed block (531) is in contact with the rotating rod (514).

8. The arteriovenous fistula puncture blood vessel auxiliary development device according to claim 7, characterized in that: The center of the top of the vascular imaging instrument (53) is provided with a fixedly connected first telescopic tube (532), a slidable second telescopic tube (54) is provided in the first telescopic tube (532), a slidable connecting column (541) is provided in the second telescopic tube (54), a fixedly connected sliding block (542) is provided on the top of the connecting column (541), the sliding block (542) is slidably connected to the second sliding seat (442), the outer wall of the second telescopic tube (54) is sleeved with a fixedly connected ring (543), and the ring (543) is slidably connected to the inner wall of the first telescopic tube (532).

9. The arteriovenous fistula puncture blood vessel auxiliary development device according to claim 8, characterized in that: The outer wall of the connecting column (541) is fixed with an axially distributed second fixed block (544), and the second fixed block (544) is located at the lower end of the connecting column (541). The outer wall of the second telescopic tube (54) is fixed with an axially distributed third fixed block (545), and the third fixed block (545) is located at the lower end of the second telescopic tube (54). A rotatable arc plate (548) is axially provided in the first telescopic tube (532), and an array-distributed second groove is provided on the outer wall of the arc plate (548). A rotatable second connecting rod (546) and a third connecting rod (547) are respectively provided on the second fixed block (544) and the third fixed block (545), and the other ends of the second connecting rod (546) and the third connecting rod (547) are both rotatably connected to the inner wall of the arc plate (548).

10. A method for using the arteriovenous fistula puncture blood vessel auxiliary development device according to claim 9, characterized in that: The method comprises the following steps: an operator rotates the first knob (16), and the threaded rod (15) also rotates accordingly, and the rotation of the threaded rod (15) drives the clamping frame (2) to move, and the position of the clamping frame (2) is adjusted according to the size of the patient's arm, and then the first bracket (32) is slid toward the mounting box (12), and the first external spline (313) and the second external spline (326) are both inserted into the symmetrically distributed internal spline (324), and the second knob (328) is rotated, and the first external spline (313) also rotates accordingly, driving the traction roller (31) to rotate, and the disposable blood collection pad wrapped on the drive shaft (312) is unfolded and replaced, and is reeled up by the collection roller (311); At the same time, the synchronous wheel (322) rotates to drive the synchronous belt (323), and the second external spline (326) also rotates, driving the gear (327) to rotate, and the rack (41) also moves upward, driving the second support plate (4) to move upward, squeezing the fourth support plate (44) during the movement of the second support plate (4), and the fourth support plate (44) rotates, and the fourth support plate (44) squeezes the connecting column (541) downward, and the connecting column (541) moves downward to drive the second connecting rod (546) and the third connecting rod (547) to rotate, and the arc plate (548) also moves toward the inner wall of the first telescopic tube (532), and the arc plate (548) squeezes the inner wall of the first telescopic tube (532), and the position of the connecting column (541) is fixed; The fourth support plate (44) continues to squeeze the connecting column (541), and the first telescopic tube (532) drives the vascular imaging instrument (53) to move downward. The vascular imaging instrument (53) squeezes the inclined block (522) during the movement toward the outside of the projection box (51). The third arc block (52) moves toward the inner wall of the projection box (51), and the third tension spring rod (521) is compressed, so that the vascular imaging instrument (53) is exposed from the circular hole (511); The patient's arm is placed on the disposable blood collection pad above the clamping seat (11), the electric cylinder (21) is started, the telescopic rod of the electric cylinder (21) is stretched, the first arc block (22) moves toward the patient's arm, the second arc block (23) squeezes the patient's arm, and the patient's arm is fixed. At the same time, during the downward movement of the first arc block (22), the projection box (51) is driven to move downward, and the second telescopic tube (54) slides along the inner wall of the first telescopic tube (532); When the patient's puncture is completed, the second knob (328) is pulled outward, and the first external spline (313) and the second external spline (326) are separated from the symmetrically distributed internal spline (324). The first tension spring rod (42) drives the second support plate (4) to move downward, driving the vascular imaging device (53) to move toward the inside of the projection box (51). The first fixed block (531) squeezes the rotating rod (514), and the rotating rod (514) rotates to drive the third arc block (52) to move closer to each other to block the circular hole (511).

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