Auxiliary positioning device for internal fistula puncture

Abstract

The invention discloses an internal fistula puncture auxiliary positioning device, and belongs to the field of puncture auxiliary devices. Comprising a U-shaped fixing frame, adjusting transverse grooves are formed in the opposite sides of the upper surface of the U-shaped fixing frame, adjusting blocks are slidably connected to the interiors of the two adjusting transverse grooves, fixing plates are fixedly connected to the upper surfaces of the two adjusting blocks, and adjusting vertical grooves are formed in the opposite sides of the two fixing plates; an adjusting transverse groove in a U-shaped fixing frame is matched with an adjusting screw rod and a belt wheel transmission assembly, an adjusting block can be driven to drive an arc-shaped plate to stably move front and back by rotating a stirring disc, preliminary positioning of a puncture area is achieved, an arc-shaped groove of the arc-shaped plate is matched with a clamping plate, a guide plate can be driven to slide left and right in the direction of a blood vessel, and the internal fistula blood vessel is accurately aligned; the height of the guide plate can be quickly adjusted by adjusting the combination of the vertical groove, the first insertion rod and the U-shaped pressing plate, and the device is adaptive to arm thicknesses and blood vessel depths of different patients.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of puncture assisting device, in particular to an internal fistula puncture assisting positioning device. BACKGROUND

[0002] In the hemodialysis treatment system, the autologous arteriovenous fistula as the "lifeline" of the patient, the precision of the puncture operation directly determines the dialysis efficiency and the service life of the internal fistula, in clinical practice, the internal fistula puncture needs to rely on the professional experience of medical staff to complete positioning and operation;

[0003] However, the puncture positioning in the prior art excessively depends on subjective experience, and the precision is difficult to guarantee, the medical staff mainly determines the puncture point through "visual observation of blood vessel direction + tactile perception of tremor", if the internal fistula blood vessel position of the patient is deep, the blood vessel wall is thin, or the skin has pigmentation, scar, hair blockage, it is easy to cause puncture point judgment deviation, and it is easy to appear repeated puncture of the same part or uneven interval of puncture points, not only increase the pain of the patient, but also may cause complications such as blood vessel stenosis and false aneurysm, shorten the service life of the internal fistula, at the same time, in the traditional operation, the medical staff needs to adjust the needle insertion parameters according to the hand feeling and experience, if the hand slightly shakes during operation, or the patient's arm moves involuntarily due to nervousness, the needle tip is easy to deviate from the blood vessel, causing puncture failure, repeated puncture not only damages the blood vessel endothelium, but also may cause bleeding and hematoma at the puncture point, further increasing the physical and psychological burden of the patient. SUMMARY

[0004] The purpose of the present application is to provide a solution to the problem that the puncture positioning in the prior art excessively depends on subjective experience and the precision is difficult to guarantee, and another purpose of the present application is to provide a solution to the problem that in the traditional operation, the medical staff needs to adjust the needle insertion parameters according to the hand feeling and experience, which is easy to cause the needle tip to deviate from the blood vessel, resulting in puncture failure.

[0005] Technical scheme: an internal fistula puncture assisting positioning device, comprising a U-shaped fixing frame, the upper surface of the U-shaped fixing frame is provided with adjusting horizontal grooves on the opposite sides, the interiors of the two adjusting horizontal grooves are slidably connected with adjusting blocks, the upper surfaces of the two adjusting blocks are fixedly connected with fixing plates, the opposite sides of the two fixing plates are provided with adjusting vertical grooves, and the inner side walls of the two adjusting vertical grooves are slidably connected with an arc-shaped plate;

[0006] The outer side wall of the arc-shaped plate is provided with a through-type arc-shaped groove, the front surface and the rear surface of the arc-shaped groove are provided with limiting sliding grooves, the interiors of the two limiting sliding grooves are slidably connected with clamping plates, and the opposite sides of the two clamping plates are fixedly connected with a guide plate.

[0007] The upper surface of the guide plate is provided with a through-type guide groove, and the interior of the guide groove is provided with a puncture assembly.

[0008] Further, the front surface of the U-shaped fixing frame is provided with a groove, the inner rear surface of the groove is rotatably connected with a belt pulley one through a rotating shaft, the inner rear surface of the groove and located on both sides of the belt pulley one are rotatably connected with a belt pulley two on the opposite side, the outer side wall of the belt pulley one and the outer side wall of the two belt pulleys two are commonly transmissionally connected with a transmission belt one, the front surface of the two belt pulleys two are fixedly connected with a belt pulley three, the inner rear surface of the two adjusting transverse grooves are rotatably connected with an adjusting screw rod through a rotating shaft, the outer side wall of the two adjusting screw rods are respectively and internally screw-connected with the two adjusting blocks, the front end of the two adjusting screw rods are respectively extended to the inner part of the groove and are fixedly connected with a belt pulley four, the outer side wall of the two belt pulleys four are respectively and commonly transmissionally connected with a transmission belt two with the outer side wall of the two belt pulleys three, the front surface of the belt pulley one is fixedly connected with a pushing disc.

[0009] Further, the inner part of the U-shaped fixing frame is provided with a protective soft pad.

[0010] Further, the inner part of the two adjusting vertical grooves are respectively provided with a plurality of positioning holes one on the opposite side, the inner part of the arc-shaped plate and located on both sides of the arc-shaped groove are provided with an adjusting cavity, the inner part of the two adjusting cavities are provided with a sliding plate, the opposite side of the two sliding plates are fixedly connected with a plug rod one, the opposite end of the two plug rods one are respectively extended to the inner part of the two positioning holes one above, the opposite side of the two sliding plates are respectively and commonly fixedly connected with a plurality of springs one with the opposite side of the inner part of the two adjusting cavities, the opposite side of the two sliding plates and located in front of and behind the two plug rods one are fixedly connected with a wedge-shaped resisting block, the outer side wall of the two adjacent wedge-shaped resisting blocks are commonly provided with a U-shaped pressing plate above, the outer side wall of the two U-shaped pressing plates are slidably connected with the inner part of the arc-shaped plate.

[0011] Further, the upper surface of the arc-shaped plate is fixedly connected with a limiting rod on the opposite side, the outer side wall of the limiting rod is slidably connected with the inner part of the U-shaped pressing plate, the outer side wall of the limiting rod is sleeved with a spring two, the two ends of the spring two are respectively fixedly connected with the inner upper surface of the U-shaped pressing plate and the upper surface of the arc-shaped plate.

[0012] Further, the left side and the right side of the guide plate are provided with a dial vertical groove, the interiors of the two dial vertical grooves are slidably connected with a movable block, the interiors of the two movable blocks are slidably connected with a movable plate, the opposite sides of the two movable plates are fixedly connected with a connecting rod, the opposite ends of the two connecting rods extend to the opposite sides of the two movable blocks, and the opposite ends of the two connecting rods are fixedly connected with an arc-shaped clamping plate, the opposite sides of the two movable plates are fixedly connected with a pressing block, the opposite sides of the two pressing blocks extend to the opposite sides of the two movable blocks, and the outer side walls of the two connecting rods are sleeved with a spring three.

[0013] Further, the interiors of the two limiting sliding grooves are provided with a plurality of positioning holes two, the interiors of the two clamping plates are slidably connected with a moving plate, the lower surfaces of the two moving plates are fixedly connected with a plug rod two, the interiors of the two clamping plates are provided with a penetrating type extension groove, the interiors of the left side and the right side of the two clamping plates are provided with a penetrating type sliding vertical groove, the left side and the right side of the two clamping plates are provided with a U-shaped connecting plate, the two ends of the two U-shaped connecting plates pass through the plurality of sliding vertical grooves, and the two ends of the two U-shaped connecting plates are fixedly connected with the outer side walls of the two moving plates, and the lower surfaces of the two U-shaped connecting plates are connected with a supporting plate.

[0014] Further, the upper surfaces of the two movable blocks are fixedly connected with a magnetic plate one, the upper surfaces of the two magnetic plates one are magnetically connected with a magnetic plate two, and the opposite sides of the two magnetic plates two are fixedly connected with the opposite sides of the two supporting plates.

[0015] Further, the lower surfaces of the two moving plates are fixedly connected with a spring four.

[0016] Beneficial effects: the device can drive the adjusting block to move the arc-shaped plate forward and backward stably by rotating the dial plate through the adjusting transverse groove on the U-shaped fixing frame, the belt pulley transmission assembly, the preliminary positioning of the puncture area is realized, the arc-shaped groove of the arc-shaped plate cooperates with the clamping plate, the guide plate can slide left and right along the blood vessel direction, the internal fist blood vessel is accurately aligned, the combination of the adjusting vertical groove, the plug rod one and the U-shaped pressing plate can quickly adjust the height of the guide plate, adapt to the arm thickness and the blood vessel depth of different patients, multi-directional adjustment synergy can accurately move the guide plate to the puncture point position above, avoid positioning deviation caused by visual obstruction and deep blood vessel position, and the puncture point position can be stably and repeatedly marked without manual marking, and the risk of repeated puncture is reduced.

[0017] The device provides a fixed path for the puncture assembly through the guide groove on the guide plate, ensures that the needle insertion direction is consistent with the blood vessel direction, avoids the needle tip deviation caused by hand shaking, can intuitively adjust the needle insertion depth of the puncture assembly by cooperating the vertical groove with the movable block, does not need to rely on hand feeling judgment, is suitable for the blood vessel depth difference of different patients, can clamp the puncture assembly through the arc-shaped clamping plate by pressing the pressing block, prevents the needle body from shaking during the puncture process, further guarantees the needle insertion stability, thereby effectively solves the problem of unstable needle insertion parameter control in the traditional operation, reduces the puncture failure caused by the needle tip deviating from the blood vessel, and reduces the complication risk of blood vessel endothelial injury, blood oozing and hematoma. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the overall structure schematic diagram of the present application;

[0019] Figure 2 is the front view structure schematic diagram of the cross section of the fixed plate and the arc-shaped plate of the present application;

[0020] Figure 3 is the overall side view structure schematic diagram of the guide plate and the movable block of the present application;

[0021] Figure 4 is the front view structure schematic diagram of the cross section of the guide plate and the movable block of the present application;

[0022] Figure 5 is the front view structure schematic diagram of the cross section of the clamping plate of the present application;

[0023] Figure 6 is the overall structure schematic diagram of the present application Figure 2 is the enlarged structure schematic diagram of A in the present application;

[0024] Figure 7 is the enlarged structure schematic diagram of B in the present application Figure 2 .

[0025] In the diagram: 1. U-shaped fixing frame; 2. Adjusting horizontal groove; 3. Adjusting block; 4. Fixing plate; 5. Adjusting vertical groove; 6. Arc plate; 7. Arc groove; 8. Limiting slide groove; 9. Locking plate; 10. Guide plate; 11. Guide groove; 12. Puncture assembly; 13. Groove; 14. Pulley 1; 15. Pulley 2; 16. Transmission belt 1; 17. Pulley 3; 18. Adjusting screw; 19. Pulley 4; 20. Transmission belt 2; 21. Actuating disc; 22. Protective pad; 23. Positioning hole 1; 24. Adjusting cavity; 25. Sliding plate; 26. Insert rod one; 27. Spring one; 28. Wedge-shaped contact block; 29. ​​U-shaped pressing plate; 30. Limiting rod; 31. Spring two; 32. Actuating vertical groove; 33. Movable block; 34. Movable plate; 35. Connecting rod; 36. Arc-shaped clamping plate; 37. Pressing block; 38. Spring three; 39. Positioning hole two; 40. Moving plate; 41. Insert rod two; 42. Extending groove; 43. Sliding vertical groove; 44. U-shaped connecting plate; 45. Support plate; 46. Magnetic suction plate one; 47. Magnetic suction plate two; 48. Spring four. Detailed Implementation

[0026] To make the technical solution of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Example

[0028] like Figures 1-7 As shown, an arteriovenous fistula puncture auxiliary positioning device is provided, including a U-shaped fixing frame 1. Adjustable transverse grooves 2 are formed on opposite sides of the upper surface of the U-shaped fixing frame 1. Adjustable blocks 3 are slidably connected inside each of the two adjustable transverse grooves 2. Fixing plates 4 are fixedly connected to the upper surfaces of each of the two adjusting blocks 3. Adjustable vertical grooves 5 are formed on opposite sides of each of the two fixing plates 4. An arc-shaped plate 6 is slidably connected to the inner walls of the two vertical grooves 5. A through-type arc-shaped groove 7 is formed on the outer wall of the arc-shaped plate 6. Limiting grooves 8 are formed on both the front and rear surfaces of the arc-shaped groove 7. Locking plates 9 are slidably connected inside each of the two limiting grooves 8. A guide plate 10 is fixedly connected to opposite sides of the two locking plates 9. A through-type guide groove 11 is formed on the upper surface of the guide plate 10. A puncture component 12 is disposed inside the guide groove 11.

[0029] In use, first, the patient's arm is placed in the U-shaped fixing frame 1, the two sides of the adjusting block 3 are pushed to slide horizontally forward and backward by adjusting the horizontal groove 2, the fixing plate 4 connected with the adjusting block 3 is driven to move synchronously, and then the position of the arc-shaped plate 6 in the front and back directions is adjusted, the area where the internal fistula blood vessel is located is preliminarily approached, then the clamping plate 9 is pushed to slide left and right in the arc-shaped groove 7 along the limiting sliding groove 8, that is, the guide plate 10 is driven to adjust left and right, and finally the guide plate 10 is accurately moved to the above of the preset puncture point, the precise positioning of the puncture position is completed, after positioning is completed, the medical staff puts the puncture assembly 12 into the guide groove 11 on the guide plate 10, and performs puncture operation along the track of the guide groove 11, so that the puncture needle is stabbed into the internal fistula blood vessel according to the preset direction and angle, so that the guide plate 10 can be flexibly moved in different directions by adjusting the front and back horizontal adjustment of the horizontal groove 2 and the left and right adjustment of the arc-shaped groove 7, the puncture point is accurately aligned, the positioning deviation caused by relying on experience in traditional puncture is avoided, the U-shaped fixing frame 1 can stably fix the patient's arm to prevent the patient's arm from moving involuntarily during puncture, and the guide groove 11 can provide stable guidance for the puncture assembly 12 to ensure the consistency of the puncture angle and direction, reduce the risk of puncture failure and blood vessel injury, without the assistance of additional medical staff to fix the limbs, saving manpower, improving the efficiency and safety of puncture operation, and being suitable for different patient's arm thickness and internal fistula position, enhancing the versatility of the device.

[0030] As shown in Figure 1 The front surface of the U-shaped fixing frame 1 is provided with a groove 13, the inner rear surface of the groove 13 is rotatably connected with a belt pulley one 14 through a rotating shaft, the inner rear surface of the groove 13 and located on both sides of the belt pulley one 14 are rotatably connected with a belt pulley two 15, the outer side wall of the belt pulley one 14 and the outer side wall of the two belt pulley two 15 are commonly connected with a transmission belt one 16, the front surface of the two belt pulley two 15 are fixedly connected with a belt pulley three 17, the inner rear surface of the two adjusting horizontal grooves 2 are rotatably connected with an adjusting screw 18 through a rotating shaft, the outer side wall of the two adjusting screw 18 are respectively connected with the inner thread of the two adjusting blocks 3, the front end of the two adjusting screw 18 are respectively extended to the inner part of the groove 13, and are fixedly connected with a belt pulley four 19, the outer side wall of the two belt pulley four 19 are respectively commonly connected with the transmission belt two 20 of the outer side wall of the two belt pulley three 17, the front surface of the belt pulley one 14 is fixedly connected with a dial plate 21;

[0031] The medical staff rotates the setting dial 21 to drive the synchronous rotation of the belt pulley one 14. Since the belt pulley one 14 and the two belt pulley twos 15 on both sides of the groove 13 are connected through the transmission belt one 16, the rotation of the belt pulley one 14 will drive the synchronous rotation of the two belt pulley twos 15 through the transmission belt one 16. Since the front surfaces of the two belt pulley twos 15 are fixedly connected with the belt pulley threes 17, the belt pulley twos 15 will drive the synchronous rotation of the corresponding belt pulley threes 17. Since the two belt pulley threes 17 are respectively connected with the belt pulley four 19 at the front end of the adjusting screw rod 18 in the adjusting transverse groove 2 through the transmission belt two 20, the rotation of the belt pulley three 17 will drive the rotation of the adjusting screw rod 18 through the transmission belt two 20. Since the adjusting screw rod 18 is screw-connected with the adjusting block 3 in the adjusting transverse groove 2, the rotation of the adjusting screw rod 18 will be converted into the forward and backward sliding of the adjusting block 3 along the adjusting transverse groove 2. The adjusting block 3 is fixedly connected with the fixed plate 4, and the fixed plate 4 is slidingly connected with the arc-shaped plate 6 through the adjusting vertical groove 5, so as to realize the forward and backward movement adjustment of the arc-shaped plate 6. Thus, only one dial 21 needs to be rotated to make the two adjusting blocks 3 drive the stable and synchronous forward and backward movement of the fixed plate 4 and the arc-shaped plate 6, avoiding the deviation of the arc-shaped plate 6 caused by manual adjustment of both sides, ensuring the accuracy of the positioning of the subsequent guide plate 10, without complex operation, simplifying the adjustment steps of the medical staff, saving operation time, and further improving the reliability of the puncture positioning.

[0032] As shown in Figure 1 The inside of the U-shaped fixed frame 1 is provided with a protective soft pad 22.

[0033] The protective soft pad 22 is soft and has a certain elasticity, which can provide flexible support and wrapping for the patient's arm, avoiding direct contact of the patient's arm with the hard inner wall of the U-shaped fixed frame 1, avoiding the numbness and discomfort of the patient's arm caused by long-term local pressure due to device fixation, and improving the comfort of the patient during the puncture process. At the same time, the protective soft pad 22 can increase the friction between the arm and the U-shaped fixed frame 1, which can assist in enhancing the stability of the arm in the U-shaped fixed frame 1 when the patient's arm shakes slightly due to nervousness or other reasons, reducing the influence of arm movement on the puncture positioning accuracy and the stability of puncture operation.

[0034] As shown in Figure 2 and Figure 6As shown, the two adjusting vertical grooves 5 are provided with a plurality of positioning holes 23 on the opposite sides of the inner part, the inner part of the arc-shaped plate 6 is provided with adjusting cavities 24 on both sides of the arc-shaped groove 7, the two adjusting cavities 24 are provided with sliding plates 25, the opposite sides of the two sliding plates 25 are fixedly connected with inserting rods 26, the opposite ends of the two inserting rods 26 extend to the inner part of the two positioning holes 23, the opposite sides of the two sliding plates 25 are fixedly connected with a plurality of springs 27 on the opposite sides of the inner part of the two adjusting cavities 24, the opposite sides of the two sliding plates 25 are fixedly connected with wedge-shaped resisting blocks 28 in front of and behind the two inserting rods 26, the outer side walls of the two adjacent wedge-shaped resisting blocks 28 are provided with U-shaped pressing plates 29, the outer side walls of the two U-shaped pressing plates 29 are slidably connected with the inner part of the arc-shaped plate 6; the opposite sides of the upper surface of the arc-shaped plate 6 are fixedly connected with limiting rods 30, the outer side walls of the limiting rods 30 are slidably connected with the inner part of the U-shaped pressing plates 29, the outer side walls of the limiting rods 30 are sleeved with springs 31, and the two ends of the springs 31 are fixedly connected with the inner upper surface of the U-shaped pressing plates 29 and the upper surface of the arc-shaped plate 6 respectively;

[0035] By pressing the two U-shaped pressing plates 29 downward at the same time, the U-shaped pressing plates 29 will slide vertically downward along the limiting rods 30 during the pressing process, at this time the spring two 31 sleeved outside the limiting rods 30 will be compressed and generate a reset elastic force, as the U-shaped pressing plates 29 move downward, their two ends contact the wedge-shaped resisting blocks 28 in the adjusting cavities 24 of the arc-shaped plates 6, by the wedge-shaped design of the two ends of the U-shaped pressing plates 29, continuous downward pressing will generate a horizontal extrusion force on the wedge-shaped resisting blocks 28, pushing the two wedge-shaped resisting blocks 28 to slide relatively to the inside of the adjusting cavities 24, and the wedge-shaped resisting blocks 28 are fixedly connected with the sliding plates 25, so the sliding plates 25 will move synchronously with the wedge-shaped resisting blocks 28 to the inside of the adjusting cavities 24, the spring one 27 opposite to the sliding plates 25 will be stretched and accumulate a reset force, at the same time, the plug rod one 26 fixedly connected with the sliding plates 25 opposite will move with the sliding plates 25 and gradually pull out from the positioning holes one 23 in the adjusting vertical grooves 5, until the plug rod one 26 completely separates from the positioning holes one 23, at this time the position fixing state between the arc-shaped plates 6 and the fixed plates 4 is released, then medical staff adjusts the height of the arc-shaped plates 6 according to the height requirement of the puncture point, vertically pushes the arc-shaped plates 6 to slide up and down along the two adjusting vertical grooves 5, adjusts the height of the arc-shaped plates 6, so that the guide plates 10 connected with the arc-shaped plates 6 move to the puncture point directly above, after the height is adjusted in place, the pressing on the U-shaped pressing plates 29 is released, the reset elastic force of the spring two 31 will push the U-shaped pressing plates 29 to slide upward along the limiting rods 30 to reset, the extrusion force of the U-shaped pressing plates 29 on the wedge-shaped resisting blocks 28 disappears, at this time the reset force of the spring one 27 will pull the sliding plates 25 to move to the outside of the adjusting cavities 24, the sliding plates 25 drive the plug rod one 26 to move synchronously, so that the plug rod one 26 reinserts into the positioning holes one 23 of the corresponding height of the adjusting vertical grooves 5, the height fixing of the arc-shaped plates 6 is completed, ensuring that the guide plates 10 stably stay above the puncture point, so that the fixing of the arc-shaped plates 6 can be quickly released, which is simple and convenient, without the need for additional tools, and the limiting rods 30 can ensure the stability of the moving direction of the U-shaped pressing plates 29 during pressing, avoiding the adjustment failure caused by pressing deviation, by the setting of multiple positioning holes one 23, the precise fixing of the arc-shaped plates 6 at different heights can be realized, meeting the puncture height requirement corresponding to the arm thickness of different patients and the depth of internal fistula blood vessels, ensuring that the guide plates 10 can accurately aim at the puncture point, improving the safety and accuracy of puncture operation, and reducing the puncture deviation problem caused by improper height adjustment.

[0036] As Figure 3 , Figure 4 and Figure 7As shown, the left and right sides of the guide plate 10 are provided with a pull vertical groove 32, the inside of the two pull vertical grooves 32 is slidably connected with a movable block 33, the inside of the two movable blocks 33 is slidably connected with a movable plate 34, the opposite sides of the two movable plates 34 are fixedly connected with a connecting rod 35, the opposite ends of the two connecting rods 35 extend to the opposite sides of the two movable blocks 33, and are fixedly connected with an arc-shaped clamping plate 36, the opposite sides of the two movable plates 34 are fixedly connected with a pressing block 37, the opposite sides of the two pressing blocks 37 extend to the opposite sides of the two movable blocks 33, the outer side walls of the two connecting rods 35 are sleeved with a spring three 38, and the two ends of the two spring threes 38 are fixedly connected with the opposite sides of the two movable plates 34 and the opposite sides of the inside of the two movable blocks 33;

[0037] When the position and height of the guide plate 10 are adjusted and stably located above the puncture point, the medical staff first places the puncture assembly 12 in the guide groove 11 of the guide plate 10, then presses the two pressing blocks 37 and applies pressure in opposite directions, the pressing blocks 37 drive the movable plates 34 fixedly connected therewith to slide in opposite directions along the inside of the movable blocks 33, the movable plates 34 compress the spring threes 38 sleeved on the outer side of the connecting rods 35 when moving, so that the spring threes 38 generate a reset elastic force, at the same time, the movable plates 34 drive the connecting rods 35 to move in opposite directions synchronously, the connecting rods 35 push the arc-shaped clamping plates 36 to gradually approach the puncture assembly 12, until the inner side walls of the two arc-shaped clamping plates 36 tightly fit the outer side walls of the puncture assembly 12, achieving clamping and fixing of the puncture assembly 12, preventing the puncture assembly 12 from deviating during puncture, after clamping the puncture assembly 12, the medical staff can adjust the depth of the patient's internal fistula blood vessel by pushing the movable blocks 33 to slide up and down along the pull vertical grooves 32 on both sides of the guide plate 10, the movable blocks 33 drive the puncture assembly 12 clamped by the arc-shaped clamping plates 36 to move along the pull vertical grooves 32 synchronously, thereby accurately controlling the puncture depth of the puncture assembly 12, after adjusting to the appropriate depth, keeping the position of the movable blocks 33 stable can perform puncture operation, after puncture is completed, the reset elastic force of the spring threes 38 pushes the movable plates 34, the connecting rods 35 and the arc-shaped clamping plates 36 to reset, releasing the clamping of the puncture assembly 12, so that the clamping and releasing of the puncture assembly 12 can be quickly realized, the operation is simple and efficient, without the need for additional fixing tools, the arc-shaped clamping plates 36 can adapt to puncture assemblies 12 of different diameters, and have strong universality, with the cooperation of the pull vertical grooves 32 and the movable blocks 33, the puncture depth can be intuitively and accurately adjusted, avoiding the problem of too deep or too shallow puncture caused by traditional experience-based depth judgment, reducing the risk of blood vessel injury, further improving the accuracy and safety of puncture operation, reducing the puncture failure rate, reducing the pain of patients, also reducing the operation difficulty of medical staff, improving work efficiency.

[0038] As shown in FIG. 1, Figure 2 , Figure 3 , Figure 4 ,Figure 5 And Figure 7 As shown in the figure, the inner lower surface of the two limiting sliding grooves 8 is provided with a plurality of positioning holes two 39, the inner part of the two clamping plates 9 is slidingly connected with a moving plate 40, the lower surface of the two moving plates 40 is fixedly connected with a plug rod two 41, the inner lower surface of the two clamping plates 9 is provided with a through type extension slot 42, the inner left side and the inner right side of the two clamping plates 9 are provided with a through type sliding vertical slot 43, the left side and the right side of the two clamping plates 9 are provided with a U-shaped connecting plate 44, the two ends of the two U-shaped connecting plates 44 pass through a plurality of sliding vertical slots 43 respectively, and are fixedly connected with the outer side walls of the two moving plates 40 respectively, and the lower surfaces of the two U-shaped connecting plates 44 are connected with a support plate 45; the upper surfaces of the two movable blocks 33 are fixedly connected with a magnetic plate one 46, the upper surfaces of the two magnetic plates one 46 are magnetically connected with a magnetic plate two 47, and the opposite sides of the two magnetic plates two 47 are fixedly connected with the opposite sides of the two support plates 45 respectively;

[0039] The lower surfaces of the two moving plates 40 are fixedly connected with a spring four 48 together with the inner lower surfaces of the two guide plates 10 respectively;

[0040] In the initial state, the magnetic plate one 46 and the magnetic plate two 47 on the two movable blocks 33 are attracted to each other, at this time the moving plate 40 is kept in the higher position in the clamping plate 9 under the magnetic attraction force, the plug rod two 41 is stored in the inner part of the clamping plate 9 and does not pass through the extension slot 42 to be inserted into the positioning hole two 39, and the guide plate 10 can slide freely along the limiting sliding groove 8 with the clamping plate 9, which is convenient for medical staff to adjust the position of the guide plate 10 to align the puncture point, when puncture is needed, the medical staff first pulls down the two movable blocks 33, the movable block 33 drives the magnetic plate one 46 to move downward synchronously, as the pulling force increases, the magnetic attraction between the magnetic plate one 46 and the magnetic plate two 47 is overcome and separated, the constraint of the magnetic plate one 46 to the moving plate 40 disappears, at this time the spring four 48 in the compressed state generates a rebounding force, which pushes the moving plate 40 to slide downward in the clamping plate 9, the moving plate 40 drives the plug rod two 41 to pass through the extension slot 42 and accurately insert into the corresponding positioning hole two 39 in the lower surface of the limiting sliding groove 8, realizing the relative fixation of the guide plate 10 and the arc-shaped plate 6, avoiding accidental movement of the guide plate 10 during puncture, after the guide plate 10 is fixed, the medical staff press the two pressing blocks 37, which can drive the arc-shaped clamping plate 36 to clamp the puncture assembly 12 and complete the puncture process along the guide groove 11, so as to accurately align the puncture point, the quick fixation of the guide plate 10 can be realized by simply pulling the movable block 33, the operation is convenient and reliable, which can effectively guarantee the stability during puncture, reduce the puncture deviation caused by the movement of the device, and the subsequent pressing of the pressing block 37 can carry out puncture, the overall process is coherent, reduces the operation difficulty of the medical staff, and improves the puncture efficiency and safety.

[0041] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. An internal fistula puncture auxiliary positioning device, comprising a U-shaped fixing frame (1), characterized in that: The upper surface of the U-shaped fixing frame (1) is provided with adjusting horizontal grooves (2) on the sides, the interiors of the two adjusting horizontal grooves (2) are slidably connected with adjusting blocks (3), the upper surfaces of the two adjusting blocks (3) are fixedly connected with fixed plates (4), the opposite sides of the two fixed plates (4) are provided with adjusting vertical grooves (5), and the inner side walls of the two adjusting vertical grooves (5) are slidably connected with an arc-shaped plate (6). The outer side wall of the arc-shaped plate (6) is provided with a penetrating arc-shaped groove (7), the front surface and the rear surface of the arc-shaped groove (7) are provided with limiting sliding grooves (8), the interiors of the two limiting sliding grooves (8) are slidably connected with clamping plates (9), and the opposite sides of the two clamping plates (9) are fixedly connected with a guide plate (10). The upper surface of the guide plate (10) is provided with a penetrating guide groove (11), and the interior of the guide groove (11) is provided with a puncture assembly (12).

2. The internal fistula access assist positioning device of claim 1, wherein: The front surface of the U-shaped fixing frame (1) is provided with a groove (13), the interior rear surface of the groove (13) is rotatably connected with a belt pulley one (14) through a rotating shaft, the interior rear surface of the groove (13) and located on the two sides of the belt pulley one (14) are rotatably connected with belt pulleys two (15) on the opposite sides, the outer side wall of the belt pulley one (14) and the outer side walls of the two belt pulleys two (15) are commonly transmission-connected with a transmission belt one (16), the front surfaces of the two belt pulleys two (15) are fixedly connected with belt pulleys three (17), the interior rear surfaces of the two adjusting horizontal grooves (2) are rotatably connected with adjusting screws (18) through rotating shafts, the outer side walls of the two adjusting screws (18) are respectively threadedly connected with the interiors of the two adjusting blocks (3), the front ends of the two adjusting screws (18) extend into the interior of the groove (13) and are fixedly connected with belt pulleys four (19), the outer side walls of the two belt pulleys four (19) are respectively commonly transmission-connected with a transmission belt two (20) with the outer side walls of the two belt pulleys three (17), and the front surface of the belt pulley one (14) is fixedly connected with a pushing disc (21).

3. The internal fistula access assist positioning device of claim 1, wherein: The interior of the U-shaped fixing frame (1) is provided with a protective soft pad (22).

4. The internal fistula access assist positioning device of claim 1, wherein: Both the inside opposite sides of the two adjusting vertical grooves (5) are provided with a plurality of positioning holes one (23), the inside of the arc-shaped plate (6) and located on both sides of the arc-shaped groove (7) is provided with an adjusting cavity (24), the inside of the two adjusting cavities (24) is provided with a sliding plate (25), the opposite sides of the two sliding plates (25) are fixedly connected with a plug rod one (26), the opposite ends of the two plug rods one (26) extend into the inside of the two positioning holes one (23) respectively, the opposite sides of the two sliding plates (25) are fixedly connected with a plurality of springs one (27) respectively and oppositely in the two adjusting cavities (24), the opposite sides of the two sliding plates (25) and located in front of and behind the two plug rods one (26) are fixedly connected with a wedge-shaped resisting block (28), the outer side walls of the two adjacent wedge-shaped resisting blocks (28) are provided with a U-shaped pressing plate (29) above, the outer side walls of the two U-shaped pressing plates (29) are slidably connected with the inside of the arc-shaped plate (6).

5. The internal fistula access assist positioning device of claim 4, wherein: The opposite sides of the upper surface of the arc-shaped plate (6) are fixedly connected with a limiting rod (30), the outer side wall of the limiting rod (30) is slidably connected with the inside of the U-shaped pressing plate (29), the outer side wall of the limiting rod (30) is sleeved with a spring two (31), the two ends of the spring two (31) are fixedly connected with the upper surface of the inside of the U-shaped pressing plate (29) and the upper surface of the arc-shaped plate (6) respectively.

6. The internal fistula access assist positioning device of claim 1, wherein: The left side and the right side of the guide plate (10) are provided with a pulling vertical groove (32), the inside of the two pulling vertical grooves (32) is slidably connected with a movable block (33), the inside of the two movable blocks (33) is slidably connected with a movable plate (34), the opposite sides of the two movable plates (34) are fixedly connected with a connecting rod (35), the opposite ends of the two connecting rods (35) extend to the opposite sides of the two movable blocks (33) respectively, and are fixedly connected with an arc-shaped clamping plate (36) respectively, the opposite sides of the two movable plates (34) are fixedly connected with a pressing block (37), the opposite sides of the two pressing blocks (37) extend to the opposite sides of the two movable blocks (33) respectively, the outer side walls of the two connecting rods (35) are sleeved with a spring three (38), the two ends of the two spring threes (38) are fixedly connected with the opposite sides of the two movable plates (34) and the opposite sides of the inside of the two movable blocks (33) respectively.

7. The internal fistula access assist positioning device of claim 1, wherein: The inner lower surface of two limiting sliding grooves (8) is provided with a plurality of positioning holes (39), the inner part of two clamping plates (9) is slidably connected with a moving plate (40), the lower surface of two moving plates (40) is fixedly connected with a plug rod (41), the inner lower surface of two clamping plates (9) is provided with a through type extension groove (42), the inner left side and the inner right side of two clamping plates (9) are provided with a through type sliding vertical groove (43), the left side and the right side of two clamping plates (9) are provided with a U-shaped connecting plate (44), the two ends of two U-shaped connecting plates (44) pass through a plurality of sliding vertical grooves (43) respectively, and are fixedly connected with the outer side walls of two moving plates (40) respectively, and the lower surfaces of two U-shaped connecting plates (44) are connected with a supporting plate (45).

8. The internal fistula access assist positioning device of claim 7, wherein: The upper surfaces of two movable blocks (33) are fixedly connected with a magnetic plate (46), the upper surfaces of two magnetic plates (46) are magnetically connected with a magnetic plate (47), and the opposite sides of two magnetic plates (47) are fixedly connected with the opposite sides of two supporting plates (45).

9. The internal fistula access assist positioning device of claim 7, wherein: The lower surfaces of two moving plates (40) are fixedly connected with a spring (48) on the inner lower surfaces of two guide plates (10) respectively.

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