A safety fixator for PICC puncture

Abstract

A safety fixer for PICC puncture, the present invention relates to the field of medical device technology; the rotating cylinder is movably arranged in the middle of the installation frame; the front end of the rotating shaft located on the front side is connected to a limited locking mechanism; there are two electric reels, which are fixedly mounted on the upper and lower strip grooves through mounting seats respectively; the pressure cloth belt is arranged in the middle of the rotating cylinder, and the two ends of the pressure cloth belt are crossed and movably passed through the middle of the strip groove, and the two ends are respectively wound around the inside of the electric reels on the upper and lower sides; there are two rest rings, which are respectively fixed on the left and right open ends inside the rotating cylinder; the rest rings are rubber rings; the puncture auxiliary mechanism is arranged on the bottom plate on the right side of the installation frame; the stability of the arm during the puncture process is ensured, the pressure on the patient's arm is more uniform, the blood vessel will not slide easily after it bulges, and it can remain stable during the entire puncture process, facilitating the smooth progress of the puncture process.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a safety fixator for PICC puncture. Background Art

[0002] PICC uses a catheter to puncture a vein in the peripheral arm. The catheter goes directly to the large vein close to the heart, which can avoid direct contact between chemotherapy drugs and the arm vein. The current PICC puncture method is to first measure the length from the patient's puncture site to the superior vena cava with a tape measure. After selecting the puncture site at the elbow, a venous tourniquet is tied. After routine disinfection, the catheter is inserted into the vein. The catheter length is retained according to the patient's condition. After the puncture is completed, it is confirmed that it is in the superior vena cava and can be used. In actual application, it is found that some elderly patients are thin and have very thin blood vessels. After an ordinary venous tourniquet is tied on the patient's upper arm, it is difficult to find the correct needle insertion position, and multiple punctures are required, which increases the patient's pain. On the other hand, the puncture process has relatively high technical requirements for the operation. When using an ordinary tourniquet, the patient's blood vessels are easy to slip during the puncture, and multiple repeated punctures are required for success, which is time-consuming and labor-intensive. Therefore, a safe fixator for PICC puncture is urgently needed. Summary of the Invention

[0003] The purpose of the present invention is to address the defects and shortcomings of the existing technology and provide a safety fixator for PICC puncture with a simple structure, reasonable design and easy use, which can solve the technical problems in the above-mentioned existing technology.

[0004] To achieve the above object, the technical solution adopted by the present invention is: it comprises a base plate and a mounting frame; the mounting frame is fixedly provided on the left side of the top surface of the base plate;

[0005] It also contains:

[0006] The rotating drum is movably arranged in the middle of the mounting frame. Rotating shafts are symmetrically fixed on the front and rear side walls of the rotating drum. The other end of the rotating shaft is rotatably passed through the inner side wall of the mounting frame through a bearing. The front end of the rotating shaft on the front side is connected to a limited locking mechanism. Bar grooves are symmetrically opened on the upper and lower sides of the front side wall of the rotating drum.

[0007] There are two electric scrolls, which are fixed on the upper and lower strip grooves respectively through mounting bases; the electric scrolls are connected to an external power supply;

[0008] The pressure cloth belt is arranged in the middle of the rotating drum, and the two ends of the pressure cloth belt are crossed and movably passed through the middle of the strip groove, and the two ends are respectively wound inside the upper and lower electric reels;

[0009] There are two rest rings, which are fixedly arranged on the left and right opening ends of the rotating cylinder respectively; the rest rings are rubber rings;

[0010] The puncture auxiliary mechanism is arranged on the bottom plate on the right side of the installation frame.

[0011] Through the above technical solution design, the patient passes the arm to be PICC punctured through the pressure cloth belt in the middle of the rotating cylinder. According to the angle of the arm, the angle of the rotating cylinder is adjusted by the rotating shaft, and the pressure cloth belt is gradually tightened by the electric reels on the upper and lower sides. The cloth belt is gradually wrapped around the outer wall of the patient's arm to apply pressure to the patient's arm. Since the belt surface of the pressure cloth belt is larger than the rubber band in the prior art, the pressure on the patient's arm is more uniform, and the blood vessel will not slide easily after it bulges, and it can remain stable during the entire puncture process, which facilitates the smooth progress of the puncture process; then the puncture auxiliary mechanism is used to help medical staff perform the puncture operation at the located venous blood vessel position.

[0012] As a further improvement of the present invention, the limit locking mechanism includes:

[0013] A limiting toothed disc, the limiting toothed disc being fixedly mounted on the front side wall of the mounting frame surrounding the rotating shaft;

[0014] The movable rod is movably mounted on a connecting block integrally formed on the outer wall of the rotating shaft, and a butterfly handle is fixedly provided on the outer end of the movable rod; guide strips are symmetrically fixedly provided on the side walls of the movable rod, and the guide strips are slidably provided in a guide groove provided in the middle of the connecting block;

[0015] The limiting tooth is fixedly arranged at the rear end of the moving rod, and a compression spring is sleeved on the moving rod between the limiting tooth and the connecting block. The front and rear ends of the compression spring are respectively arranged to conflict with the connecting block and the limiting tooth; the tooth groove of the limiting tooth is movably engaged with the tooth groove of the limiting gear disk.

[0016] Through the above technical solution design, the movable rod is pulled forward by the butterfly handle so that the limit tooth is separated from the limit tooth disk. At this time, the rotation angle of the rotating shaft can be adjusted. When the angle adjustment is completed, the butterfly handle is released, and the reverse compression force of the compression spring causes the limit tooth to engage with the limit tooth disk, thereby locking the angle of the rotating shaft.

[0017] As a further improvement of the present invention, an anti-slip pad is fixedly provided on the bottom surface of the base plate.

[0018] Through the above technical solution design, the friction of the bottom plate is increased by the anti-slip pad.

[0019] As a further improvement of the present invention, a plurality of tension springs are fixedly provided on the inner side wall of the rotating cylinder at equal rounded corners, and the other ends of the plurality of tension springs are connected to the side wall of the pressure cloth belt.

[0020] Through the above technical solution design, the pressure belt is reset by the reverse tension of the tension spring, making it easier for the patient to pass his arm through.

[0021] As a further improvement of the present invention, the puncture assisting mechanism comprises:

[0022] A screw rod, wherein the screw rod is rotatably embedded in a mounting groove provided in the base plate through a thread, and the right end of the screw rod rotates through the right side wall of the base plate through a bearing and is fixedly connected to the output end of the drive motor; the drive motor is connected to an external power supply;

[0023] An adjusting block is slidably arranged inside the mounting groove, and a middle portion of the adjusting block is rotatably sleeved on the screw rod through a thread;

[0024] A No. 1 electric push rod, wherein the No. 1 electric push rod is vertically fixedly arranged on the top surface of the adjustment block, and the upper end of the No. 1 electric push rod is fixedly connected to the support rod;

[0025] A sliding block is slidably sleeved on the support rod, and a puncture needle clamping mechanism is hingedly connected to the bottom surface of the sliding block through a hinge seat;

[0026] The No. 2 electric push rod is fixedly arranged on the top surface of the support rod, and the front end of the No. 2 electric push rod is fixedly arranged on the side wall of the sliding block; the No. 2 electric push rod is connected to an external power supply.

[0027] Through the above technical solution design, the drive motor is turned on, and the output end of the drive motor drives the screw to rotate, and then drives the No. 1 electric push rod to move left and right through the adjustment block. The extension and retraction of the No. 1 electric push rod drives the support rod to rise and fall, and then adjusts the position of the puncture needle clamping mechanism, and then fixes the puncture needle through the puncture needle clamping mechanism. After determining the needle insertion position, the medical staff adjusts the position of the puncture needle clamping mechanism to perform the acupuncture.

[0028] As a further improvement of the present invention, the puncture needle fixing mechanism comprises:

[0029] The clamping block, wherein the middle portion of the clamping block is rotatably arranged on the bottom surface of the sliding block through a hinge seat, and the rotating shaft in the middle portion of the hinge seat is a damping rotating shaft; a clamping groove is opened in the middle portion of the clamping block, and the size of the clamping groove is matched with the size of the needle seat and needle wing of the puncture needle;

[0030] The No. 3 electric push rod is fixedly embedded in the clamping block on one side of the clamping groove, and the pushing end of the No. 3 electric push rod is fixedly connected to the other side wall of the clamping groove; the No. 3 electric push rod is connected to an external power supply.

[0031] Through the above technical solution design, the needle seat and needle wings of the puncture needle are clamped in the middle of the clamping slot, and then the medical staff adjusts the needle angle by adjusting the angle of the clamping block. When the puncture is completed, the No. 3 electric push rod extends to disengage the puncture needle from the clamping slot.

[0032] As a further improvement of the present invention, an adjustment plate is movably provided on the bottom plate, and an armrest is fixedly provided on the top surface of the adjustment plate.

[0033] Through the above technical solution design, the position of the hand rest can be adjusted through the adjustment plate, so that the patient's arm can be raised to facilitate acupuncture.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] 1. The patient's arm is stretched inside the rotating cylinder and is compressed. The rotating cylinder can be adjusted according to the inclination of the patient's arm, which increases the comfort of use. The rotating cylinder can also be limited by the limit locking mechanism to ensure the stability of the arm during the puncture process.

[0036] 2. It uses a pressure cloth belt to apply pressure. Compared with the rubber band in the existing technology, the pressure cloth belt has a larger surface area, which produces more uniform pressure on the patient's arm. The blood vessel will not slide easily after it bulges, and it can remain stable during the entire puncture process, facilitating the smooth progress of the puncture process.

[0037] 3. The puncture auxiliary mechanism can help clamp the puncture needle and adjust its position, effectively preventing medical staff from sweating and becoming slippery on their hands. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0039] Figure 1 It is a structural schematic diagram of the present invention.

[0040] Figure 2 yes Figure 1 Enlarged view of part A in .

[0041] Figure 3 It is a top view of the present invention.

[0042] Figure 4 yes Figure 3 BB-direction sectional stereogram.

[0043] Figure 5 yes Figure 3 The CC-direction sectional stereogram is shown in FIG.

[0044] Figure 6 It is a structural schematic diagram of the position limiting locking mechanism of the present invention.

[0045] Figure 7 It is a structural schematic diagram of the puncture needle fixing mechanism of the present invention.

[0046] Description of reference numerals:

[0047] Base plate 1, mounting frame 2, rotating cylinder 3, rotating shaft 4, strip groove 5, electric reel 6, pressure cloth belt 7, shelf ring 8, limit locking mechanism 9, limit gear disc 9-1, moving rod 9-2, connecting block 9-3, butterfly handle 9-4, guide bar 9-5, guide groove 9-6, limit latch 9-7, compression spring 9-8, anti-slip pad 10, tension spring 11, puncture auxiliary mechanism 12, screw rod 12-1, mounting groove 12-2, drive motor 12-3, adjustment block 12-4, No. 1 electric push rod 12-5, support rod 12-6, sliding block 12-7, No. 2 electric push rod 12-8, puncture needle fixing mechanism 13, clamping block 13-1, clamping groove 13-2, No. 3 electric push rod 13-3, adjustment plate 14, hand pillow 15. DETAILED DESCRIPTION

[0048] The present invention will be further described below with reference to the accompanying drawings.

[0049] Example 1:

[0050] See Figure 1-7 As shown, this embodiment comprises a base plate 1 and a mounting frame 2; the mounting frame 2 is fixedly provided on the left side of the top surface of the base plate 1 by bolts, the through hole in the middle of the mounting frame 2 is cylindrical, and an anti-slip pad 10 is fixedly provided on the bottom surface of the base plate 1 by gluing; the anti-slip pad 10 increases the friction of the base plate 1;

[0051] It also contains:

[0052] The rotating drum 3 is movably arranged in the middle of the mounting frame 2. A rotating shaft 4 is symmetrically fixed and welded to the front and rear side walls of the rotating drum 3. The other end of the rotating shaft 4 is rotatably mounted on the inner side wall of the mounting frame 2 via a bearing. The front end of the rotating shaft 4 is connected to a limited locking mechanism 9. The upper and lower sides of the front side wall of the rotating drum 3 are symmetrically provided with strip grooves 5.

[0053] There are two electric reels 6, which are fixed on the upper and lower strip grooves 5 respectively through mounting bases and bolts; the electric reels 6 are connected to an external power supply;

[0054] The pressure cloth belt 7 is arranged in the middle of the rotating cylinder 3, and the two ends of the pressure cloth belt 7 are crossed and movably passed through the middle of the strip groove 5, and the two ends are respectively wound around the inside of the electric reel 6 on the upper and lower sides. A plurality of tension springs 11 are fixedly welded on the inner side wall of the rotating cylinder 3 with equal fillet angles, and the other ends of the plurality of tension springs 11 are connected to the side wall of the pressure cloth belt 7 by sewing; the pressure cloth belt 7 is reset by the reverse tension of the tension spring 11, making it convenient for the patient to pass his arm through;

[0055] There are two rest rings 8, which are fixed on the left and right opening ends of the rotating cylinder 3 by gluing. The rest rings 8 are rubber rings.

[0056] The puncture auxiliary mechanism 12 is arranged on the bottom plate 1 on the right side of the installation frame 2.

[0057] Through the above technical solution design, the patient passes the arm to be PICC punctured through the pressure cloth belt 7 in the middle of the rotating cylinder 3. According to the angle of the arm, the angle of the rotating cylinder 3 is adjusted by the rotating shaft 4, and the pressure cloth belt 7 is gradually tightened by the electric reels 6 on the upper and lower sides. The cloth belt is gradually wrapped around the outer wall of the patient's arm to apply pressure to the patient's arm. Since the belt surface of the pressure cloth belt 7 is larger than the rubber band in the prior art, the pressure on the patient's arm is more uniform, and the blood vessel will not slide easily after it bulges, and it can remain stable during the entire puncture process, which facilitates the smooth progress of the puncture process; then the puncture auxiliary mechanism 12 is used to help medical staff perform the puncture operation at the located venous blood vessel position.

[0058] Example 2:

[0059] See Figure 1 、 2 As shown in FIG6 , based on Example 1, the position limiting and locking mechanism 9 includes:

[0060] The limiting toothed disc 9-1 is fixed to the front side wall of the mounting frame 2 around the rotating shaft 4 by bolts;

[0061] A movable rod 9-2 is movably mounted on a connecting block 9-3 integrally formed on the outer wall of the rotating shaft 4. A butterfly handle 9-4 is fixed to the outer end of the movable rod 9-2 by bolts. A guide bar 9-5 is symmetrically fixed to the side wall of the movable rod 9-2 by bolts, and the guide bar 9-5 is slidably mounted in a guide groove 9-6 provided in the middle of the connecting block 9-3.

[0062] The limiting tooth 9-7 is fixedly arranged at the rear end of the moving rod 9-2, and a compression spring 9-8 is sleeved on the moving rod 9-2 between the limiting tooth 9-7 and the connecting block 9-3. The front and rear ends of the compression spring 9-8 are respectively arranged to conflict with the connecting block 9-3 and the limiting tooth 9-7; the tooth groove of the limiting tooth 9-7 is movably engaged with the tooth groove of the limiting gear disc 9-1.

[0063] Through the above technical solution design, the movable rod 9-2 is pulled forward by the butterfly handle 9-4 so that the limit tooth 9-7 is separated from the limit tooth disk 9-1. At this time, the rotation angle of the rotating shaft 4 can be adjusted. When the angle adjustment is completed, the butterfly handle 9-4 is released, and the reverse compression force of the compression spring 9-8 causes the limit tooth 9-7 to engage with the limit tooth disk 9-1, thereby locking the angle of the rotating shaft 4.

[0064] Example 3:

[0065] See Figure 1 、 3 As shown in , 5, and 7, based on Example 1, the puncture assisting mechanism 12 includes:

[0066] The screw rod 12-1 is rotatably embedded in the mounting groove 12-2 provided on the base plate 1 through a thread. The right end of the screw rod 12-1 rotates through the right side wall of the base plate 1 through a bearing and is fixedly connected to the output end of the drive motor 12-3. The drive motor 12-3 is connected to an external power supply.

[0067] An adjusting block 12-4 is slidably disposed within the mounting groove 12-2, and a middle portion of the adjusting block 12-4 is rotatably sleeved on the screw rod 12-1 through a thread;

[0068] The first electric push rod 12-5 is fixed vertically on the top surface of the adjustment block 12-4 by bolts, and the upper end of the first electric push rod 12-5 is fixedly connected to the support rod 12-6 by bolts; the bottom plate 1 is movably provided with an adjustment plate 14, and the top surface of the adjustment plate 14 is fixedly provided with a hand rest 15 by bolts; the position of the hand rest 15 is adjusted by the adjustment plate 14 to facilitate raising the patient's arm for acupuncture.

[0069] Sliding block 12-7, the sliding block 12-7 is slidably sleeved on the support rod 12-6, and a puncture needle clamping mechanism is hingedly connected to the bottom surface of the sliding block 12-7 through a hinge seat;

[0070] The second electric push rod 12-8 is fixed on the top surface of the support rod 12-6 by bolts, and the front end of the second electric push rod 12-8 is fixed on the side wall of the sliding block 12-7; the second electric push rod 12-8 is connected to an external power supply.

[0071] Through the above technical solution design, the drive motor 12-3 is turned on, and the output end of the drive motor 12-3 drives the screw rod 12-1 to rotate, and then drives the No. 1 electric push rod 12-5 to move left and right through the adjustment block 12-4. The extension and retraction of the No. 1 electric push rod 12-5 drives the support rod 12-6 to rise and fall, and then adjusts the position of the puncture needle clamping mechanism, and then fixes the puncture needle through the puncture needle clamping mechanism. After determining the needle insertion position, the medical staff adjusts the position of the puncture needle clamping mechanism to perform the acupuncture.

[0072] Example 4:

[0073] See Figure 7 As shown, based on Example 3, the puncture needle fixing mechanism 13 includes:

[0074] The clamping block 13-1 is rotatably mounted on the bottom surface of the sliding block 12-7 via a hinged seat in the middle thereof. The rotating shaft in the middle of the hinged seat is a damping rotating shaft. A clamping groove 13-2 is formed in the middle of the clamping block 13-1. The size of the clamping groove 13-2 is matched with the size of the needle seat and needle wings of the puncture needle.

[0075] The third electric push rod 13-3 is fixed by bolts and embedded in the clamping block 13-1 on one side of the clamping groove 13-2, and the pushing end of the third electric push rod 13-3 is fixedly connected to the other side wall of the clamping groove 13-2; the third electric push rod 13-3 is connected to an external power supply.

[0076] Through the above technical solution design, the needle seat and needle wings of the puncture needle are clamped in the middle of the clamping groove 13-2, and then the medical staff adjusts the acupuncture angle by adjusting the angle of the clamping block 13-1. When the puncture is completed, the No. 3 electric push rod 13-3 extends to disengage the puncture needle from the clamping groove 13-2.

[0077] The specific models of the No. 1 electric push rod 12-5, the No. 2 electric push rod 12-8, the No. 3 electric push rod 13-3, the electric reel 6 and the drive motor 12-3 are purchased directly from the market and installed and used according to the use requirements.

[0078] When using the present invention, the patient passes the arm to be punctured by PICC through the pressure cloth belt 7 in the middle of the rotating cylinder 3. According to the angle of the arm, the angle of the rotating cylinder 3 is adjusted by the rotating shaft 4. The pressure cloth belt 7 is gradually tightened by the electric reels 6 on the upper and lower sides. The cloth belt is gradually wrapped around the outer wall of the patient's arm to apply pressure to the patient's arm. Since the belt surface of the pressure cloth belt 7 is larger than the rubber band in the prior art, the pressure on the patient's arm is more uniform, and the blood vessel will not slide easily after it bulges, and it is stable during the entire puncture process. It can maintain stability, facilitating the smooth progress of the puncture process; then, the needle seat and needle wing of the puncture needle are clamped in the middle of the clamping groove 13-2, and then the medical staff adjusts the acupuncture angle by adjusting the angle of the clamping block 13-1, turns on the drive motor 12-3, and the output end of the drive motor 12-3 drives the screw rod 12-1 to rotate, and then drives the No. 1 electric push rod 12-5 to move left and right through the adjustment block 12-4, and the extension of the No. 1 electric push rod 12-5 drives the support rod 12-6 to rise and fall. After the position adjustment is completed, the puncture can be performed.

[0079] After adopting the above structure, the beneficial effects of this specific embodiment are:

[0080] 1. The patient's arm is stretched inside the rotating cylinder 3 and is compressed. The rotating cylinder 3 can be adjusted according to the inclination of the patient's arm, which increases the comfort of use. The rotating cylinder 3 can also be limited by the limiting locking mechanism 9 to ensure the stability of the arm during the puncture process.

[0081] 2. The pressure belt 7 is used to apply pressure. Compared with the rubber band in the prior art, the belt surface of the pressure belt 7 is larger, and the pressure on the patient's arm is more uniform. The blood vessel will not slide easily after it bulges, and it can remain stable during the entire puncture process, facilitating the smooth progress of the puncture process.

[0082] 3. The puncture auxiliary mechanism can help clamp the puncture needle and adjust its position, effectively preventing medical staff from sweating and becoming slippery on their hands.

[0083] The above description is only used to illustrate the technical solution of the present invention and is not intended to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A safety holder for PICC puncture, comprising a base plate (1) and a mounting frame (2); the mounting frame (2) is fixedly provided on the left side of the top surface of the base plate (1); It is characterized by: It also contains: A rotating cylinder (3), wherein the rotating cylinder (3) is movably arranged in the middle of the mounting frame (2), a rotating shaft (4) is symmetrically fixedly arranged on the front and rear side walls of the rotating cylinder (3), and the other end of the rotating shaft (4) is rotatably passed through the inner side wall of the mounting frame (2) through a bearing; the front end of the rotating shaft (4) located on the front side is connected to a limited locking mechanism (9); strip grooves (5) are symmetrically opened on the upper and lower sides of the front side wall of the rotating cylinder (3); Electric reels (6), there are two electric reels (6), which are fixed on the upper and lower strip grooves (5) respectively through mounting seats; the electric reels (6) are connected to an external power supply; A pressure cloth belt (7), wherein the pressure cloth belt (7) is arranged in the middle of the rotating drum (3), and after the two ends of the pressure cloth belt (7) are crossed, it is movably passed through the middle of the strip groove (5), and the two ends are respectively wound around the inside of the electric reel (6) on the upper and lower sides; The shelf rings (8) are two and are fixedly arranged on the left and right opening ends inside the rotating cylinder (3); the shelf rings (8) are rubber rings; A puncture assisting mechanism (12), wherein the puncture assisting mechanism (12) is arranged on the bottom plate (1) on the right side of the mounting frame (2); The limiting locking mechanism (9) comprises: A limiting toothed disc (9-1), wherein the limiting toothed disc (9-1) is fixedly arranged on the front side wall of the mounting frame (2) around the rotating shaft (4); A moving rod (9-2), wherein the moving rod (9-2) is movably mounted on a connecting block (9-3) integrally formed on the outer side wall of the rotating shaft (4), and a butterfly handle (9-4) is fixedly mounted on the outer end of the moving rod (9-2); guide bars (9-5) are symmetrically fixedly mounted on the side wall of the moving rod (9-2), and the guide bars (9-5) are slidably mounted in a guide groove (9-6) provided in the middle of the connecting block (9-3); A limiting latch (9-7) is fixedly arranged at the rear end of the moving rod (9-2); a compression spring (9-8) is sleeved on the moving rod (9-2) between the limiting latch (9-7) and the connecting block (9-3); front and rear ends of the compression spring (9-8) are respectively arranged to abut against the connecting block (9-3) and the limiting latch (9-7); and a tooth groove of the limiting latch (9-7) is movably engaged with a tooth groove of the limiting toothed disc (9-1).

2. The safety fixator for PICC puncture according to claim 1, characterized in that: An anti-slip pad (10) is fixedly provided on the bottom surface of the base plate (1).

3. The safety fixator for PICC puncture according to claim 1, characterized in that: A plurality of tension springs (11) are fixedly provided at the rounded corners on the inner side wall of the rotating cylinder (3), and the other ends of the plurality of tension springs (11) are connected to the side wall of the pressure cloth belt (7).

4. The safety fixator for PICC puncture according to claim 1, characterized in that: The puncture auxiliary mechanism (12) comprises: A screw rod (12-1), wherein the screw rod (12-1) is embedded in a mounting groove (12-2) provided on the base plate (1) by rotating through a thread, and the right end of the screw rod (12-1) rotates through the right side wall of the base plate (1) through a bearing and is fixedly connected to the output end of the drive motor (12-3); the drive motor (12-3) is connected to an external power supply; An adjusting block (12-4), wherein the adjusting block (12-4) is slidably arranged inside the mounting groove (12-2), and a middle portion of the adjusting block (12-4) is rotatably sleeved on the screw rod (12-1) via a thread; A No. 1 electric push rod (12-5), wherein the No. 1 electric push rod (12-5) is vertically fixedly arranged on the top surface of the adjustment block (12-4), and the upper end of the No. 1 electric push rod (12-5) is fixedly connected to a support rod (12-6); A sliding block (12-7), wherein the sliding block (12-7) is slidably sleeved on the support rod (12-6), and a puncture needle fixing mechanism (13) is hingedly connected to the bottom surface of the sliding block (12-7) via a hinge seat; A No. 2 electric push rod (12-8) is fixedly arranged on the top surface of the support rod (12-6), and a front end of the No. 2 electric push rod (12-8) is fixedly arranged on the side wall of the sliding block (12-7); the No. 2 electric push rod (12-8) is connected to an external power supply.

5. The safety fixator for PICC puncture according to claim 4, characterized in that: The puncture needle fixing mechanism (13) comprises: A clamping block (13-1), wherein the middle portion of the clamping block (13-1) is rotatably arranged on the bottom surface of the sliding block (12-7) via a hinge seat, and the rotating shaft in the middle portion of the hinge seat is a damping rotating shaft; a clamping groove (13-2) is provided in the middle portion of the clamping block (13-1), and the size of the clamping groove (13-2) is matched with the size of the needle seat and needle wing of the puncture needle; A No. 3 electric push rod (13-3) is fixedly embedded in a clamping block (13-1) on one side of the clamping groove (13-2), and a pushing end of the No. 3 electric push rod (13-3) is fixedly connected to the other side wall of the clamping groove (13-2); the No. 3 electric push rod (13-3) is connected to an external power supply.

6. The safety fixator for PICC puncture according to claim 1, characterized in that: An adjustment plate (14) is movably provided on the bottom plate (1), and a hand rest (15) is fixedly provided on the top surface of the adjustment plate (14).

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