CN114949543B - Self-oriented laminar flow channel breathing follow-up stepping PICC catheter ectopic prevention device - Google Patents

Self-oriented laminar flow channel breathing follow-up stepping PICC catheter ectopic prevention device Download PDF

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CN114949543B
CN114949543B CN202210532875.0A CN202210532875A CN114949543B CN 114949543 B CN114949543 B CN 114949543B CN 202210532875 A CN202210532875 A CN 202210532875A CN 114949543 B CN114949543 B CN 114949543B
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gear
catheter
telescopic
self
plate
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CN114949543A (en
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王文雅
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Second Peoples Hospital of Huaian
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Second Peoples Hospital of Huaian
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/02—Holding devices, e.g. on the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/02—Holding devices, e.g. on the body
    • A61M25/04—Holding devices, e.g. on the body in the body, e.g. expansible
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/02—Holding devices, e.g. on the body
    • A61M2025/028—Holding devices, e.g. on the body having a mainly rigid support structure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/04—General characteristics of the apparatus implanted
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2206/00—Characteristics of a physical parameter; associated device therefor
    • A61M2206/10—Flow characteristics
    • A61M2206/11—Laminar flow
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2210/00—Anatomical parts of the body
    • A61M2210/08—Limbs
    • A61M2210/083—Arms

Abstract

The invention discloses a self-oriented laminar flow channel respiration follow-up stepping PICC catheter anti-ectopic device which comprises a fixing frame, a self-controlled respiration follow-up device, a uniform control type self-intermittent imbedding device, a neck pressing component and a uniform laminar flow orientation guiding device, wherein the self-controlled respiration follow-up device is arranged on the fixing frame, the fixing frame is provided with a guiding arm, the uniform control type self-intermittent imbedding device is arranged at one end of the guiding arm, the neck pressing component is arranged on the fixing frame, and the uniform laminar flow orientation guiding device is arranged on the fixing frame.

Description

Self-oriented laminar flow channel breathing follow-up stepping PICC catheter ectopic prevention device
Technical Field
The invention relates to the technical field of medical instruments, in particular to a self-oriented laminar flow channel breathing follow-up stepping PICC catheter ectopic prevention device.
Background
PICC catheterization is totally called central vein catheterization through peripheral vein puncture, and is implemented by using a catheter from an external Zhou Shoubei vein, such as a fossa cubital vein, a centralis cubital vein or a cephalic vein, and the like, and optionally one catheter directly reaches an upper vena cava close to a heart, and medicines are regularly injected through the catheter, so that direct contact of chemotherapy medicines and arm veins is avoided, and the blood flow speed of a great vein is high, so that the thinning treatment medicines can be quickly flushed, and the irritation of the medicines to blood vessels is prevented. Therefore, the device can effectively protect the veins of the upper limbs, reduce the occurrence of phlebitis, relieve the pain of patients and improve the life quality of the patients.
The PICC catheter is not located in the superior vena cava, and is called catheter ectopic. The ectopic catheter is one of the common complications in PICC catheterization, the incidence rate is high, and the literature reports that the incidence rate is 12.5%, wherein the most main ectopic situation is that the tip of the PICC is not positioned in the superior vena cava after PICC catheterization and is wrongly entered into the internal jugular vein. The PICC may cause fluid leakage after ectopic, resulting in swelling of the patient's local limb, phlebitis, catheter blockage, venous thrombosis, pain and other complications, and may also result in the inability to complete treatment while discarding the catheter, sometimes requiring replacement of the catheter. The prior art comprises an improved Sitting grid technology and a PICC (peripherally inserted central catheter) catheterization technology under visual guidance, which are all dependent on abundant operation experience of nurses, and the technology is capable of only finding out the dislocation of a catheter in time, so that the generation of the dislocation cannot be reduced in principle, and the PICC catheterization technology has limitation.
Therefore, in order to overcome the drawbacks of the prior art, a PICC catheter placement device with a simple structure capable of avoiding the ectopic catheter is provided, so as to achieve the purpose of having more practical value.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the invention provides a self-oriented laminar flow channel respiration follow-up stepping PICC catheter ectopic prevention device, which aims at solving the problems that the catheter ectopic prevention device mainly depends on the operation experience of nurses in the prior art, and utilizes the physical characteristics that blood is non-Newtonian fluid and the blood flow velocity at the central position of a blood vessel is high, and adopts a method of injecting physiological saline when the catheter passes through subclavian vein to enter superior vena cava to reduce the blood concentration in the middle part of the blood vessel and convert the blood concentration into Newtonian fluid from the non-Newtonian fluid, so that a laminar flow channel with low density, low viscosity and stability (laminar flow is a flowing state of the fluid and takes a laminar flow) is formed in the middle part of the blood vessel; the characteristics that the flowing direction of the blood of the upper body vein of the human body is from other venous flows to the upper vena cava are utilized, so that the direction of the laminar flow channel is from the catheter to the upper vena cava, and the catheter directly reaches the upper vena cava along the laminar flow channel with small resistance and unique direction, thereby avoiding the catheter from entering the internal jugular vein in an abnormal position in the implantation process.
Meanwhile, in order to solve the problem that the vascular contraction is caused by tension of patients due to different force of nurses at different moments in the catheter implantation process, the uniform control type self-intermittent implantation device is adopted, the single catheter implantation length is adjusted through the push-stroke adjusting assembly so as to adapt to patients with different physiological characteristics, and the force stability and the uniform speed of the catheter in the implantation process are realized through the uniform control type catheter stepping device, so that the physiological pain and psychological tension of the patients in the catheter implantation process are reduced.
The technical scheme adopted by the invention is as follows: the self-oriented laminar flow channel breathing follow-up stepping PICC catheter ectopic prevention device comprises a fixing frame, a self-controlled breathing follow-up device, a uniform control type self-intermittent imbedding device, a neck pressing component and a uniform state laminar flow orientation guiding device, wherein the self-controlled breathing follow-up device is arranged on the fixing frame, and the functions of injecting physiological saline and pressing a neck vein during inspiration are realized by converting the expanding action of a chest cavity into an electric signal during inspiration, so that the characteristics that blood can flow into an upper vena cava in an accelerating way during inspiration of a human body are utilized, the catheter can enter the upper vena cava better, and the catheter ectopic is avoided; the fixing frame is provided with a guide arm, the uniform control type self-intermittent placement device is arranged at one end of the guide arm, the placement of the catheter is automatically stopped after the catheter is placed for a certain distance through the adjustable arrangement, a nurse can conveniently check whether the catheter is wrinkled in the pushing process in time, meanwhile, the strength and the speed of the catheter are stable in the single placement process, the speed are uniform, the physiological pain of a patient in the tube placement process is reduced, and the psychological tension is relieved; the neck pressing component is arranged on the fixing frame, the neck pressing component switch is closed, and when the self-control type respiration follow-up device captures the expanding action of the thoracic cavity, the neck pressing component is electrified and stretched, so that the internal jugular vein is pressed, and the catheter is prevented from entering the internal jugular vein; the uniform state laminar flow directional guide device is arranged on the fixing frame and comprises a uniform state dilution bin, a uniform state dilution liquid interface and a pressure pump, wherein the uniform state dilution bin is arranged on the fixing frame, the fixing frame supports and fixes the uniform state dilution bin, the uniform state dilution liquid interface is arranged on the uniform state dilution bin, and the pressure pump is arranged on the upper wall of the uniform state dilution bin and is in through connection with the uniform state dilution bin; when the catheter is predicted to reach the subclavian vein, one end of the catheter is connected to the middle of the homogeneous diluent interface, the pressurizing pump switch is closed, when the patient inhales, the self-control respiratory follower converts the expanding action of the thoracic cavity into an electric signal, the pressurizing pump is electrified to inject the isotonic normal saline into the catheter, and simultaneously the switch of the uniform-control self-intermittent device is closed, the catheter is uniformly placed into the superior vena cava under the drive of the uniform-control self-intermittent device, and because the blood is non-Newtonian fluid (namely fluid which does not satisfy Newtonian viscosity experiment law, namely fluid which has a non-linear relationship between shear stress and shear strain rate), the flow velocity of the part of the blood close to the vascular wall is slower due to the friction force of the vascular wall and the viscous force between the blood in the flowing process, when the isotonic normal saline in the catheter is injected into the blood vessel, the blood concentration in the middle of the blood vessel is reduced due to the dilution of the isotonic normal saline, the non-Newtonian fluid is converted into Newtonian fluid, so that a laminar flow (laminar flow is a flow state of fluid and is laminar) channel with small density and low viscosity and pointing to the superior vena cava is formed, the flow direction of the blood of the superior vena cava is from other vena cava to the superior vena cava, and diaphragm is lifted up during deep inhalation, so that the blood flow rate of the superior vena cava is increased, the laminar flow channel has the unique direction, the catheter moves along the direction with small resistance in the advancing process, and under the guidance of the flow direction of the blood of the laminar flow channel and the superior vena, the catheter will more easily access the superior vena cava to avoid dislocation.
As a further preferred aspect of the present invention, the uniformly-controlled self-intermittent placement device includes a catheter pushing frame, a support plate, a motor, a stopwatch, a uniformly-controlled catheter stepping device, a self-intermittent catheter pushing distance adjusting component and a catheter sleeve, wherein the catheter pushing frame is arranged at one end of the guiding arm, the support plate is arranged in the catheter pushing frame, the motor and the stopwatch are arranged on the catheter pushing frame, and the self-intermittent catheter pushing distance adjusting component and the uniformly-controlled catheter stepping device are arranged on the support plate; the self-intermittent catheter pushing distance adjusting assembly comprises a first gear, a second gear, a third gear, a driving shaft, a fixed shaft, one-way teeth and a limiting column module, wherein the first gear is movably arranged on the inner upper wall of a catheter pushing frame, the first gear is provided with an adjusting handle, the adjusting handle penetrates through the catheter pushing frame, the catheter pushing frame supports and fixes the first gear and the adjusting handle, and when the adjusting handle is screwed, the adjusting handle can drive the first gear to rotate; the second gear is provided with a bearing sleeve, the second gear is movably arranged on the inner upper wall of the catheter pushing frame through the bearing sleeve, the catheter pushing frame supports and fixes the second gear and the bearing sleeve, the second gear and the first gear are meshed with each other, and the second gear can rotate around the bearing sleeve under the drive of the first gear; the third gear is arranged on the bottom wall of the second gear, the third gear and the second gear are arranged in concentric circles, the second gear supports and fixes the third gear and can drive the third gear to rotate, the third gear is arranged as an incomplete gear, the outer ring half circle is provided with gear teeth, the gear teeth are arranged in the third gear, the driving gear is movably arranged at the lower end of the third gear, the driving gear and the third gear can mutually and concentrically rotate, one end of the driving shaft penetrates through the third gear and is movably connected to the supporting plate, the driving shaft supports and fixes the driving gear, the other end of the driving shaft penetrates through the bearing sleeve and the catheter pushing frame to be connected with the output end of the motor, the supporting plate, the bearing sleeve and the catheter pushing frame provide support for the rotation of the driving shaft, the motor provides power for the rotation of the driving shaft, the driving shaft drives the driving gear to rotate, the driving gear is arranged as the incomplete gear, the outer ring half-circle is provided with gear teeth, the fixed shaft and the limit column module are arranged on the driving gear, the unidirectional gear is movably arranged on the fixed shaft, the unidirectional gear is meshed with the inner ring gear teeth of the third gear, the unidirectional gear can rotate around the fixed shaft under the drive of the third gear, the limit column module comprises a limit column I and a limit column II, the limit column I comprises a spring I, a telescopic column I and a sliding block I, the spring I and the telescopic column I are arranged on the driving gear, the sliding block I is arranged on the spring I and the telescopic column I, the limit column II comprises a spring II, a telescopic column II and a sliding block II, the spring II and the telescopic column II are arranged on the driving gear, the sliding block II is arranged on the spring II and the telescopic column II, the sliding block I is spherical, the sliding block II is arranged in a fan-shaped structure, one surface is a curved surface, the balance is a plane, when the third gear rotates clockwise, the unidirectional tooth is driven by the third gear to rotate clockwise, when the gear teeth of the unidirectional tooth contact the curved surface of the second slider, the unidirectional tooth applies downward pressure to the second slider, the second slider presses the second spring and the second telescopic column to enable the unidirectional tooth to slide downwards through the second slider, when the unidirectional tooth passes through the second slider, the unidirectional tooth contacts the first slider, and simultaneously the second slider rises under the action of the second spring, so that the vertical surface of the second slider contacts the unidirectional tooth, the unidirectional tooth cannot rotate reversely through the second slider, and when the unidirectional tooth is not fully meshed with the third gear, one gear tooth is positioned between the first slider and the second slider, and when the unidirectional tooth cannot rotate, the gear teeth of the unidirectional tooth meet the vertical surface of the second slider, and at the moment, the unidirectional tooth is fully meshed with the third gear; the bearing sleeve is provided with an angle dial I, the driving shaft is provided with an angle dial II, the angle dial I is movably arranged on the catheter pushing frame, the bearing sleeve drives the angle dial I to rotate, the angle dial II is movably arranged on the angle dial I, the driving shaft drives the angle dial II to rotate, the outline of the angle dial I corresponds to the shape of the gear teeth of the outer ring of the third gear, the outline of the angle dial II corresponds to the shape of the gear teeth of the outer ring of the driving gear, and the corresponding relation between the gear teeth of the outer ring of the third gear and the gear teeth of the outer ring of the driving gear can be obtained by observing the corresponding relation between the outlines of the angle dial I and the angle dial II; the method comprises the steps that firstly, the outer gear teeth of a third gear and the outer gear teeth of a driving gear are arranged at will, before a catheter is placed in the catheter, the adjusting handle is rotated anticlockwise to drive the first gear to rotate anticlockwise, the first gear drives the second gear and the third gear to rotate clockwise, the inner gear teeth of the third gear stir the unidirectional teeth clockwise, the teeth of the unidirectional teeth continuously pass through a first sliding block and a second sliding block to enable the unidirectional teeth to rotate clockwise around a fixed shaft, the position of the driving gear is protected from moving when the position of the third gear is adjusted, the number of the overlapped gear teeth of the third gear and the driving gear is determined by observing the number of the overlapped parts of the first and second angle scales, and the smaller the number of the overlapped gear teeth of the third gear and the driving gear is, the longer the catheter is placed in a vein at a time; when the catheter head is placed into the peripheral vein, the motor switch is closed, the motor drives the driving shaft and the driving gear to rotate clockwise, the driving gear drives the unidirectional teeth to rotate concentrically, meanwhile, the unidirectional teeth are blocked by the third gear to have a trend of rotating anticlockwise around the fixed shaft, and the unidirectional teeth cannot rotate anticlockwise around the fixed shaft due to the arrangement of the second sliding block, so that the unidirectional teeth drive the third gear to rotate clockwise concentrically.
The uniform control type catheter stepping device comprises a first clamping gear, a first guide wheel, a second clamping gear, a second guide wheel and a supporting shaft, wherein the first guide wheel is movably arranged on a supporting plate, the first clamping gear is arranged on the first guide wheel, the first clamping gear is meshed with a third gear, the first clamping gear is meshed with a driving gear, the first guide wheel can concentrically rotate under the driving of the first clamping gear, the second guide wheel is movably arranged on the supporting plate, the second clamping gear is arranged on the second guide wheel, the first clamping gear is meshed with the second clamping gear, the second guide wheel can concentrically rotate under the driving of the second clamping gear, and the outer ring of the first guide wheel and the outer ring of the second guide wheel are concave; the guide pipe is arranged between the first guide wheel and the second guide wheel when being placed, the clamping propulsion of the guide pipe is realized by utilizing the relative rotation extrusion of the first guide wheel and the second guide wheel, one end of the supporting shaft is arranged on the second clamping gear, and the other end of the supporting shaft penetrates through the guide pipe propulsion frame to be connected to the stopwatch; the third gear and the driving gear drive the first clamping gear to rotate, the first clamping gear drives the second clamping gear, the first guide wheel and the second guide wheel to rotate, and the rotation directions of the first guide wheel and the second guide wheel are opposite, so that the catheter is driven to advance and be placed in a vein of a patient; the stopwatch records the distance of the catheter placed in the vein of the patient by recording the rotation number of the support shaft and the second clamping gear, and prevents the catheter from being placed too short or too long.
Preferably, the self-control type breathing follow-up device comprises a bearing plate, a connecting belt and an electric connection control assembly, wherein the electric connection control assembly penetrates through a fixing frame, the bearing plate is arranged on the electric connection control assembly, one end of the connecting belt is connected with the bearing plate, the other end of the connecting belt is connected with the fixing frame, a first telescopic assembly is arranged on the bearing plate and comprises a first spring and a first telescopic column, one ends of the first spring and the first telescopic column are arranged on the bearing plate, the other ends of the first spring and the first telescopic column are arranged on the fixing frame, and a plurality of groups of first telescopic assemblies are arranged; the electric coupling control assembly comprises a jacking block, an electric coupling plate I and an electric coupling plate II, wherein the jacking block movably penetrates through the fixing frame, one end of the jacking block is arranged on the bearing plate, the electric coupling plate I is arranged on the fixing frame, the electric coupling plate I is magnetic, one end of the electric coupling plate II is arranged on the fixing frame, rectangular teeth and seam line teeth are arranged at the other end of the electric coupling plate II, the rectangular teeth are arranged close to the electric coupling plate I, the seam line teeth are arranged close to the jacking block, and the other end of the jacking block is arranged on the electric coupling plate II; when a patient inhales, the chest cavity volume is enlarged, the pressure bearing plate is extruded, under the pressure action of the chest cavity, the pressure bearing plate overcomes the resistance of the first stretching spring to move towards the direction approaching to the fixed frame, the top block drives one end of the second electric connecting plate to move towards the direction approaching to the first electric connecting plate under the drive of the pressure bearing plate, as rectangular teeth and seam line teeth are arranged on the second electric connecting plate, under the action of the thrust of the top block and the magnetic attraction of the first electric connecting plate, the second electric connecting plate is bent after being contacted with the first electric connecting plate, so that the surface contact of the second electric connecting plate and the first electric connecting plate is realized, the damage of large resistance, great heat generation and the like caused by small contact area of the second electric connecting plate and the first electric connecting plate is prevented, the second electric connecting plate and the first electric connecting plate are connected in series in a dry circuit of the neck pressing component and the uniform laminar flow directional guiding device control switch, when the patient inhales, the neck pressing component and the uniform laminar flow directional guiding device switch are closed, and the motor switch is closed, and the neck pressing component and the uniform laminar directional guiding device start to work after the second electric connecting plate and the first electric connecting plate are contacted, and the self-setting intermittent operation is started; when the patient exhales, the chest stops to extrude the bearing plate, spring one will extend, the one end of kicking block drive electricity yoke plate two is to keeping away from the direction motion of electricity yoke plate one under the drive of spring one, owing to be equipped with rectangle tooth and line tooth of riding on the electricity yoke plate two, electricity yoke plate two can not crooked, after electricity yoke plate one breaks away from the contact with electricity yoke plate two, neck presses subassembly and the directional guiding device circuit disconnection of homomorphic laminar flow, neck is pressed the automatic back of returning to original position of returning after the subassembly outage, homomorphic laminar flow directional guiding device stop work, the motor switch of disconnection simultaneously, the device stop work is put into from intermittent type to the samming, realize putting into PICC pipe when the patient inhales, stop to put into PICC pipe when the patient exhales, lift on the diaphragm when utilizing the human body to inhale, the characteristics that have increased the upper chamber vein blood velocity of flow avoid the heterotopic and get into PICC.
Preferably, the neck pressing component comprises a neck pressing plate, a second telescopic component, a pressing contact and an electric telescopic rod, wherein the fixing frame is provided with a supporting block, the electric telescopic rod penetrates through the supporting block, one end of the electric telescopic rod is arranged on the fixing frame, the fixing frame and the supporting block support and fix the electric telescopic rod, the neck pressing plate is arranged at the other end of the electric telescopic rod, the second telescopic component is arranged on the neck pressing plate, the second telescopic component comprises a second spring and a second telescopic column, the second spring and the second telescopic column are arranged on the neck pressing plate, the pressing contact is arranged on the second telescopic component, a neck pressing component switch is closed, when a patient inhales, the neck pressing component switch is closed, after the first electric coupling plate and the second electric coupling plate are in contact with each other, the electric telescopic rod is electrified and starts to stretch, the pressing contact presses an internal jugular vein of the patient, the PICC catheter is prevented from ectopic entering the internal jugular vein, when the patient exhales, the first electric coupling plate and the second electric coupling plate are separated from being in contact with the electric telescopic rod and start to shorten, and the pressing contact stops pressing the internal jugular vein of the patient.
Preferably, the outer rings of the first guide wheel and the second guide wheel are provided with a silica gel coating, so that friction force between the first guide wheel and the PICC catheter is increased.
Preferably, the catheter is sleeved on the supporting plate, the catheter sleeve is used for guiding the PICC catheter to enter the peripheral vein, meanwhile, due to the fact that the catheter sleeve is long, the PICC catheter from the first guiding wheel to the arm has enough length, after the catheter is put into the obstacle, due to the fact that the distance between the force application end and the arm is far, the catheter is bent and is easier to find, the fact that the hand of a nurse is strong and the force application is very close to the arm of the patient when the manual operation is carried out in the past is avoided, and the nurse may not feel the obstacle when the catheter is put into the obstacle and further causes greater pain to the patient.
Preferably, the arm support is arranged on the fixing frame, so that a patient can conveniently put the arm on the arm support, the arm is right-angled with the trunk, meanwhile, the patient can operate by means of the fixing frame in a semi-lying position, and in the operation process, the patient does not need to additionally apply force to lift the arm due to the support of the arm support, so that the pain of the patient is reduced; because the arm of the patient is right-angled with the trunk, the included angle between the subclavian vein and the superior vena cava of the patient is obtuse, so that the PICC catheter can directly enter the superior vena cava, and the angle between the internal jugular vein and the subclavian vein is acute, the PICC catheter can be effectively prevented from entering the internal jugular vein, and the ectopic catheter is avoided; because the patient can adopt the posture of semi-lying position to perform the operation, PICC pipe more easily gets into the superior vena cava under the effect of gravity, avoids the pipe dystopy.
Preferably, the fixing frame is provided with a fixing hole, the fixing frame can be bound on one side of the body of a patient by using the binding belt, so that the fixing frame is convenient to maintain and disassemble, and the connecting belt has elasticity.
Preferably, the motor is provided with a band-type brake device and is connected in parallel to a circuit of the motor, when the motor is electrified, the band-type brake device is separated from an output shaft of the motor, the motor normally operates, when the motor is powered off, the band-type brake is released to tightly hold the output shaft of the motor, the motor cannot rotate, and the fact that the driving gear does not rotate when the third gear is regulated through the regulating handle is achieved.
The beneficial effects obtained by the invention by adopting the structure are as follows:
(1) By utilizing the physical characteristics of non-Newtonian fluid and the flow direction characteristics of human body upper body blood from other venous flows to the vena cava, the physiological saline is injected into the catheter, so that the blood in the middle of the blood vessel is converted into the Newtonian fluid from the non-Newtonian fluid, the blood concentration is reduced, the blood flow speed in the middle of the blood vessel is increased, a low-resistance laminar flow channel with unique directionality is formed, the catheter has the characteristic of moving along the direction with small resistance in the propelling process, and the catheter is difficult to enter the internal jugular vein and is easier to enter the internal jugular vein to avoid dislocation under the guidance of the laminar flow channel and the flow direction of human body venous blood.
(2) Meanwhile, the self-control type breathing follow-up device is designed by utilizing the characteristic that the diaphragm is lifted up when a human body inhales, the blood flow rate of the superior vena cava is increased, when the human body inhales, the self-control type breathing follow-up device is connected with a circuit, the neck pressing component and the uniform laminar flow directional guide device automatically work, meanwhile, the switch of the uniform control type self-intermittent imbedding device is closed, the functions of imbedding a catheter, injecting physiological saline and pressing the internal jugular vein during inspiration and stopping working during expiration are realized, and the PICC catheter is prevented from entering the internal jugular vein in a different position during imbedding.
(3) In order to realize that the catheter can be stably and uniformly placed into the peripheral vein, the catheter can be stopped to be placed after the same distance is placed, whether the catheter is normal or not is convenient to observe, meanwhile, the aim that the lengths of the catheters which are placed into the catheter for each person for a single time for different patients are possibly different is fulfilled by utilizing the uniform control type self-intermittent placement device, the functions of automatically placing the catheter and stopping the catheter to be placed after the same distance is placed each time are fulfilled by the self-intermittent catheter pushing distance adjusting component and the uniform control type catheter stepping device, the tooth number engaged by the third gear, the driving gear and the uniform control type catheter stepping device is changed by the self-intermittent catheter pushing distance adjusting component, and the aim that the lengths of the catheters which are placed into the catheter for a single time are different for different patients or for the same patient catheter is fulfilled, and physiological pain and psychological tension of the patients in the process of placing the catheter are reduced.
(4) The neck pressing component reduces the matching requirement of a patient in the operation process, in the traditional PICC catheterization operation, after the catheter is expected to reach the shoulder position, the patient is often required to be matched with the head to press the internal cervical vein, in the operation process, the patient is in a tension state or the patient is a cervical spondylosis patient, obesity or a child, the problem that the operation fails due to the fact that the movement is not in place or the blood vessel contracts due to tension often exists, and the neck pressing component is designed so that the patient can press the internal cervical vein without specific movement in the operation.
(5) The fixing frame, the arm bearing support, the guide arm and the catheter pushing frame are arranged, so that a patient can adopt a posture of a semi-lying position, and the arm is lifted flatly during operation, so that the arm is perpendicular to the trunk, and as the arm of the patient is right angle with the trunk, the included angle between the subclavian vein and the superior vena cava of the patient is obtuse, the PICC catheter can conveniently enter the superior vena cava directly, and at the moment, the angle between the internal jugular vein and the subclavian vein is acute, the PICC catheter can be effectively prevented from entering the internal jugular vein, and the catheter is prevented from being ectopic; because the patient can adopt the posture of semi-lying position to perform the operation, PICC pipe more easily gets into the superior vena cava under the effect of gravity, avoids the pipe dystopy.
(6) The catheter is sleeved between the uniform control type catheter stepping device and the arm, the distance between the catheter stress point and the arm is prolonged, when the catheter is placed smoothly, the direction and the angle of the catheter can be kept stable each time due to the design of the catheter sleeve, physiological pain of a patient is relieved, when the catheter is placed and blocked, the catheter is easy to bend due to the fact that the distance between the catheter stress point and the arm is long, medical staff is reminded, and the problem that the nurse cannot feel forced placement due to the blocking in the placing process is avoided.
Drawings
FIG. 1 is a schematic diagram of a self-orienting laminar flow channel breathing follow-up step PICC catheter anti-ectopic device provided by the invention;
FIG. 2 is a top view of the self-orienting laminar flow channel breathing follow-up step PICC catheter anti-ectopic device provided by the present invention;
fig. 3 is a schematic structural view of a fixing frame of the self-oriented laminar flow channel breathing follow-up stepping PICC catheter ectopic prevention device provided by the present invention;
FIG. 4 is a rear view of the self-orienting laminar flow channel breathing follow-up stepped PICC catheter anti-ectopic device provided by the present invention;
FIG. 5 is a cross-sectional view of a self-orienting laminar flow channel breathing follow-up stepped PICC catheter anti-ectopic device provided by the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 5A;
FIG. 7 is a schematic diagram of the electrical control assembly of the self-orienting laminar flow channel breathing follow-up step PICC catheter ectopic prevention device provided by the invention;
FIG. 8 is a schematic diagram of two partial structures of an electrical coupling plate of the self-oriented laminar flow channel breathing follow-up stepping PICC catheter ectopic prevention device provided by the invention;
FIG. 9 is an enlarged view at FIG. 5B;
FIG. 10 is a schematic diagram of a self-orienting laminar flow channel breathing follow-up stepping PICC catheter ectopic prevention device of the present invention;
FIG. 11 is a schematic diagram showing the internal structure of a self-orienting laminar flow channel breathing follow-up stepping PICC catheter ectopic prevention device of the invention;
fig. 12 is a schematic structural diagram of a uniformly controlled catheter stepping device of the self-oriented laminar flow channel breathing follow-up stepping PICC catheter ectopic prevention device provided by the present invention;
FIG. 13 is a schematic view of a first guide wheel of the self-orienting laminar flow channel breathing follow-up step PICC catheter anti-ectopic device provided by the present invention;
FIG. 14 is a schematic view of a self-intermittent catheter push adjustment assembly of a self-orienting laminar flow channel breathing follow-up stepper PICC catheter anti-ectopic device provided by the present invention;
FIG. 15 is an exploded view of a self-contained catheter push adjustment assembly of the self-orienting laminar flow channel breathing follow-up stepper PICC catheter anti-ectopic device provided by the present invention;
FIG. 16 is a right side view of a uniformly controlled catheter stepper of the self-orienting laminar flow channel breathing follow-up stepper PICC catheter anti-ectopic device provided by the present invention;
FIG. 17 is a schematic diagram of a third gear of the self-orienting laminar flow channel breathing follow-up stepper PICC catheter anti-ectopic device provided by the present invention;
FIG. 18 is a schematic view of a first limiting post of the self-orienting laminar flow channel breathing follow-up step PICC catheter anti-ectopic device provided by the invention;
fig. 19 is a schematic structural diagram of a second limiting post of the self-oriented laminar flow channel breathing follow-up step PICC catheter anti-ectopic device provided by the present invention;
FIG. 20 is a schematic view of the structure of an angle dial I of the self-oriented laminar flow channel breathing follow-up step PICC catheter anti-ectopic device provided by the invention;
fig. 21 is a schematic structural view of an angle dial II of the self-oriented laminar flow channel breathing follow-up stepping PICC catheter anti-ectopic device provided by the present invention.
Wherein 1, a fixed frame, 2, an automatic control type respiration follow-up device, 3, a uniform control type self-intermittent imbedding device, 4, a neck pressing component, 5, a uniform laminar flow directional guide device, 6, a motor, 7, a stopwatch, 8, a catheter sleeve, 11, a guide arm, 12, an arm bearing support, 13, a support block, 14, a fixing hole, 21, a bearing plate, 22, a connecting belt, 23, an electric control component, 24, a telescopic component I, 231, a top block, 232, an electric plate I, 233, an electric plate II, 234, rectangular teeth, 235, a suture tooth, 241, a spring I, 242, a telescopic column I, 31, a catheter pushing frame, 32, a support plate, 33, a uniform control type catheter stepping device, 34, a self-intermittent catheter pushing distance adjusting component, 35, a limit column module, 36 and an angle dial I, 37, second angle disk, 331, first clamping gear, 332, first clamping gear, 333, second clamping gear, 334, second guiding gear, 335, supporting shaft, 341, first gear, 342, handle, 343, second gear, 344, bearing housing, 345, third gear, 346, driving gear, 347, driving shaft, 348, fixing shaft, 349, unidirectional tooth, 351, first limit post, 352, limit post two, 353, slider one, 354, spring three, 355, telescopic post three, 356, slider two, 357, spring four, 358, telescopic post four, 41, neck press plate 42, telescopic assembly two, 43, press contact, 44, electric telescopic rod, 421, spring two, 422, telescopic post two, 51, homogeneous dilution bin, 52, homogeneous dilution liquid interface, 53, and booster pump.
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention; all other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate orientation or positional relationships based on those shown in the drawings, merely to facilitate description of the invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
As shown in fig. 1, 2 and 3, the self-oriented laminar flow channel breathing follow-up stepping PICC catheter ectopic preventing device provided by the invention comprises a fixing frame 1, a self-controlled breathing follow-up device 2, a uniform control self-intermittent imbedding device 3, a neck pressing component 4 and a uniform laminar flow directional guiding device 5, wherein the self-controlled breathing follow-up device 2 is arranged on the fixing frame 1, and the functions of injecting physiological saline and pressing a neck vein during inspiration are realized by converting the expanding action of a thoracic cavity into an electric signal, so that the characteristics that blood can accelerate to flow into the upper cavity vein during inspiration are utilized, the catheter can enter the upper cavity vein better, and the ectopic of the catheter is avoided; the fixing frame 1 is provided with the guide arm 11, the uniform control type self-intermittent placement device 3 is arranged at one end of the guide arm 11, the placement of the catheter is automatically stopped every time the catheter is placed for a certain distance through the adjustable arrangement, a nurse can conveniently check whether the catheter is wrinkled in the pushing process or not in time, meanwhile, the strength and the speed of the catheter are stable and uniform in the single placement process, and the physiological pain and psychological tension of a patient in the tube placement process are reduced; the neck pressing component 4 is arranged on the fixing frame 1, the switch of the neck pressing component 4 is closed, and when the self-control breathing follow-up device 2 captures the expanding action of the thoracic cavity, the neck pressing component 4 is electrified and stretched, so that the internal jugular vein is pressed, and the catheter is prevented from entering the internal jugular vein; the uniform laminar flow directional guide device 5 is arranged on the fixing frame 1, the uniform laminar flow directional guide device 5 comprises a uniform dilution bin 51, a uniform dilution liquid interface 52 and a pressurizing pump 53, the uniform dilution bin 51 is arranged on the fixing frame 1, the fixing frame 1 supports and fixes the uniform dilution bin 51, the uniform dilution liquid interface 52 is arranged on the uniform dilution bin 51, and the pressurizing pump 53 is arranged on the upper wall of the uniform dilution bin 51 and is in through connection with the uniform dilution bin 51; the homogeneous dilution chamber 51 is filled with isotonic normal saline, when the catheter is predicted to reach the subclavian vein, one end of the catheter is connected to the upper part of the homogeneous dilution liquid interface 52, the switch of the pressurizing pump 53 is closed, when the patient inhales, the self-control respiratory follower device 2 converts the expanding action of the chest into an electric signal, at the moment, the pressurizing pump 53 is electrified to inject the isotonic normal saline into the catheter, meanwhile, the switch of the homogeneous self-intermittent device 3 is closed, the catheter is uniformly placed into the superior vena cava under the drive of the homogeneous self-intermittent device 3, because the blood is non-Newtonian fluid (namely fluid which does not satisfy Newton's viscosity experiment law, namely fluid whose shear stress and shear strain rate are not in linear relation), the flow velocity is slower at the part close to the wall of the blood in the flowing process due to the friction force of the wall of the blood and the viscous force between the blood, when the isotonic normal saline in the catheter is injected into the blood vessel, the blood concentration in the middle of the blood vessel is reduced due to the dilution of the isotonic normal saline, the non-Newtonian fluid is converted into Newtonian fluid, so that a laminar flow (laminar flow is a flow state of fluid and is laminar) channel with small density and low viscosity and pointing to the superior vena cava is formed, the flow direction of the blood of the superior vena cava is from other vena cava to the superior vena cava, and diaphragm is lifted up during deep inhalation, so that the blood flow rate of the superior vena cava is increased, the laminar flow channel has the unique direction, the catheter moves along the direction with small resistance in the advancing process, and under the guidance of the flow direction of the blood of the laminar flow channel and the superior vena, the catheter will more easily access the superior vena cava to avoid dislocation.
As shown in fig. 1, 2, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 and 21, the uniformly controlled self-intermittent implanting device 3 includes a catheter advancing rack 31, a support plate 32, a motor 6, a stopwatch 7, a uniformly controlled catheter stepping device 33, a self-intermittent catheter advancing adjustment assembly 34 and a catheter sleeve 8, the catheter advancing rack 31 is disposed on one end of the guiding arm 11, the support plate 32 is disposed in the catheter advancing rack 31, the motor 6 and the stopwatch 7 are disposed on the catheter advancing rack 31, and the self-intermittent catheter advancing adjustment assembly 34 and the uniformly controlled catheter stepping device 33 are disposed on the support plate 32; the self-intermittent catheter pushing distance adjusting assembly 34 comprises a first gear 341, a second gear 343, a third gear 345, a driving gear 346, a driving shaft 347, a fixed shaft 348, one-way teeth 349 and a limit column module 35, wherein the first gear 341 is movably arranged on the inner upper wall of the catheter pushing frame 31, the first gear 341 is provided with an adjusting handle 342, the adjusting handle 342 is arranged on the catheter pushing frame 31 in a penetrating manner, the catheter pushing frame 31 supports and fixes the first gear 341 and the adjusting handle 342, and when the adjusting handle 342 is screwed, the adjusting handle 342 can drive the first gear 341 to rotate; the second gear 343 is provided with a bearing sleeve 344, the second gear 343 is movably arranged on the inner upper wall of the catheter pushing frame 31 through the bearing sleeve 344, the catheter pushing frame 31 supports and fixes the second gear 343 and the bearing sleeve 344, the second gear 343 is meshed with the first gear 341, and the second gear 343 can rotate around the bearing sleeve 344 under the drive of the first gear 341; the third gear 345 is arranged on the bottom wall of the second gear 343, the third gear 345 and the second gear 343 are arranged in a concentric circle, the second gear 343 supports and fixes the third gear 345 and can drive the third gear 345 to rotate, the third gear 345 is arranged as an incomplete gear, the outer ring half circle is provided with gear teeth, the gear teeth are arranged inside the third gear 345, the driving gear 346 is movably arranged at the lower end of the third gear 345, the driving gear 346 and the third gear 345 can mutually rotate concentrically, one end of the driving shaft 347 penetrates through the third gear 345 and the driving gear 346 and is movably connected to the supporting plate 32, the driving shaft 347 supports and fixes the driving gear 346, the other end of the driving shaft 347 penetrates through the bearing sleeve 344 and the catheter pushing frame 31 and is connected with the output end of the motor 6, the supporting plate 32, the bearing sleeve 344 and the catheter pushing frame 31 provide support for the rotation of the driving shaft 347, the motor 6 provides power for the rotation of the driving shaft 347, the driving shaft 347 drives the driving gear 346 to rotate, the driving gear 346 is an incomplete gear, the outer ring half ring is provided with gear teeth, the fixing shaft 348 and the limit post module 35 are arranged on the driving gear 346, the unidirectional teeth 349 are movably arranged on the fixing shaft 348, the unidirectional teeth 349 are meshed with the inner ring gear teeth of the third gear 345, the unidirectional teeth 349 can rotate around the fixing shaft 348 under the driving of the third gear 345, the limit post module 35 comprises a limit post first 351 and a limit post second 352, the limit post first 351 comprises a spring third 354, a telescopic post third 355 and a sliding block first, the spring third 354 and the telescopic post third 355 are arranged on the driving gear 346, the sliding block first is arranged on the spring third 354 and the telescopic post third 355, the limit post second 352 comprises a spring fourth 357, a telescopic post fourth 358 and a sliding block second, the spring fourth 357 and the telescopic post fourth 358 are arranged on the driving gear 346, the first 353 and the second 358 slide down to enable the unidirectional tooth 349 to pass through the second 356, when the unidirectional tooth 349 passes through the fourth position of the sliding block, the unidirectional tooth 349 contacts the first 353, and meanwhile the second 356 rises under the action of the fourth 357 to enable the vertical surface of the second 356 to contact the unidirectional tooth 349, so that the unidirectional tooth 349 cannot reversely rotate through the second 356, and when the unidirectional tooth 349 is completely meshed with the third 345, the unidirectional tooth 349 is positioned between the first 353 and the second 356, and when the unidirectional tooth 349 is not completely meshed with the third 345, the unidirectional tooth 349 cannot completely meshed with the third 349, and the unidirectional tooth 349 cannot completely mesh with the second 349 when the unidirectional tooth 349 is completely meshed with the third 345; the bearing sleeve 344 is provided with an angle dial I36, the driving shaft 347 is provided with an angle dial II 37, the angle dial I36 is movably arranged on the catheter pushing frame 31, the bearing sleeve 344 drives the angle dial I36 to rotate, the angle dial II 37 is movably arranged on the angle dial I36, the driving shaft 347 drives the angle dial II 37 to rotate, the outline of the angle dial I36 corresponds to the shape of the outer ring gear teeth of the third gear 345, the outline of the angle dial II 37 corresponds to the shape of the outer ring gear teeth of the driving gear 346, and the corresponding relation between the outer ring gear teeth of the third gear 345 and the outer ring gear of the driving gear 346 can be obtained by observing the corresponding relation between the outlines of the angle dial I36 and the angle dial II 37; at first, the outer gear teeth of the third gear 345 and the outer gear teeth of the driving gear 346 are arranged at will, before the catheter is placed, the adjusting handle 342 is rotated anticlockwise, the adjusting handle 342 drives the first gear 341 to rotate anticlockwise, the first gear 341 drives the second gear 343 and the third gear 345 to rotate clockwise, the inner gear teeth of the third gear 345 stir the unidirectional teeth 349 clockwise, the gear teeth of the unidirectional teeth 349 continuously rotate clockwise around the fixed shaft 348 through the first 353 and the second 356, the position of the driving gear 346 is protected from moving when the position of the third gear 345 is adjusted, the number of the gear teeth overlapped by the third gear 345 and the driving gear 346 is determined by observing the number of the overlapped parts of the first 36 and the second 37, the smaller the number of the gear teeth overlapped by the third gear 345 and the driving gear 346 is, and the longer the catheter is placed into the vein once; when the catheter head is placed into the peripheral vein, the motor 6 is closed, the motor 6 drives the driving shaft 347 and the driving gear 346 to rotate clockwise, the driving gear 346 drives the unidirectional tooth 349 to rotate concentrically, meanwhile, the unidirectional tooth 349 is blocked by the third gear 345 to rotate anticlockwise around the fixed shaft 348, and due to the arrangement of the sliding block II 356, the unidirectional tooth 349 cannot rotate anticlockwise around the fixed shaft 348, so that the unidirectional tooth 349 drives the third gear 345 to rotate clockwise concentrically.
As shown in fig. 1, fig. 2, fig. 10, fig. 11, fig. 12, fig. 13, fig. 14, fig. 15, fig. 16, fig. 17, fig. 18, fig. 19, fig. 20 and fig. 21, the uniform control type catheter stepping device 33 comprises a first clamping gear 331, a first guiding wheel 332, a second clamping gear 333, a second guiding wheel 334 and a supporting shaft 335, wherein the first guiding wheel 332 is movably arranged on the supporting plate 32, the first clamping gear 331 is arranged on the first guiding wheel 332, the first clamping gear 331 and the third gear 345 are meshed with each other, the first clamping gear 331 and the driving gear 346 are meshed with each other, the first guiding wheel 332 can concentrically rotate under the driving of the first clamping gear 331, the second guiding wheel 334 is movably arranged on the supporting plate 32, the second clamping gear 333 is arranged on the second guiding wheel 334, the first clamping gear 331 and the second clamping gear 333 are meshed with each other, the second guiding wheel 334 can concentrically rotate under the driving of the second clamping gear 333, and the outer ring of the first guiding wheel 332 and the second guiding wheel 334 is in a concave shape; the catheter is arranged between the first guide wheel 332 and the second guide wheel 334 when being placed, the clamping and pushing of the catheter are realized by utilizing the relative rotation extrusion of the first guide wheel 332 and the second guide wheel 334, one end of the supporting shaft 335 is arranged on the second clamping gear 333, and the other end of the supporting shaft 335 penetrates through the catheter pushing frame 31 and is connected to the stopwatch 7; the third gear 345 and the driving gear 346 drive the first clamping gear 331 to rotate, the first clamping gear 331 drives the second clamping gear 333, the first guide wheel 332 and the second guide wheel 334 to rotate, and the rotation directions of the first guide wheel 332 and the second guide wheel 334 are opposite, so that the catheter is driven to advance and be placed in the vein of the patient; the computer 7 records the distance of the catheter being placed into the vein of the patient by recording the number of turns of the support shaft 335 and the second clamping gear 333, preventing the catheter from being placed too short or too long.
As shown in fig. 1, 4, 5, 6, 7, 8 and 9, the self-control breathing follow-up device 2 comprises a bearing plate 21, a connecting belt 22 and an electric connection control component 23, wherein the electric connection control component 23 penetrates through a fixing frame 1, the bearing plate 21 is arranged on the electric connection control component 23, one end of the connecting belt 22 is connected with the bearing plate 21, the other end of the connecting belt 22 is connected with the fixing frame 1, a first telescopic component 24 is arranged on the bearing plate 21, the first telescopic component 24 comprises a first spring 241 and a first telescopic column 242, one ends of the first spring 241 and the first telescopic column 242 are arranged on the bearing plate 21, the other ends of the first spring 241 and the first telescopic column 242 are arranged on the fixing frame 1, and a plurality of groups of first telescopic components 24 are arranged; the electric connection control assembly 23 comprises a jacking block 231, an electric connection plate I232 and an electric connection plate II 233, wherein the jacking block 231 is movably arranged through the fixing frame 1, one end of the jacking block 231 is arranged on the bearing plate 21, the electric connection plate I232 is arranged on the fixing frame 1, the electric connection plate I232 is provided with magnetism, one end of the electric connection plate II 233 is arranged on the fixing frame 1, the other end of the electric connection plate II 233 is provided with rectangular teeth 234 and seam line teeth 235, the rectangular teeth 234 are arranged close to the electric connection plate I232, the seam line teeth 235 are arranged close to the jacking block 231, and the other end of the jacking block 231 is arranged on the electric connection plate II 233; when a patient inhales, the chest cavity volume is enlarged, the pressure bearing plate 21 is extruded, under the pressure action of the chest cavity, the pressure bearing plate 21 overcomes the resistance of the first stretching spring 241 to move towards the direction close to the fixed frame 1, the top block 231 is driven by the pressure bearing plate 21 to drive one end of the second electric connecting plate 233 to move towards the direction close to the first electric connecting plate 232, as the rectangular teeth 234 and the seam line teeth 235 are arranged on the second electric connecting plate 233, under the action of the thrust of the top block 231 and the magnetic attraction force of the first electric connecting plate 232, the second electric connecting plate 233 is bent after being contacted with the first electric connecting plate 232, so that the surface contact of the second electric connecting plate 233 and the first electric connecting plate 232 is realized, the harm of large resistance, multiple heat production and the like caused by small contact area of the second electric connecting plate 233 and the first electric connecting plate 232 is prevented, the neck pressing assembly 4 and the uniform laminar flow directional guide 5 are connected in series, and when the patient inhales, the neck pressing assembly 4 and the uniform laminar flow directional guide 5 are closed, after the second electric connecting plate 233 and the first electric connecting plate 232 are contacted, the neck pressing assembly 4 and the uniform laminar flow directional guide 5 are simultaneously opened, and the automatic control motor 6 begins to be opened, and the automatic intermittent operation control is started; when a patient exhales, the chest stops extruding the bearing plate 21, the first spring 241 stretches, the top block 231 drives one end of the second electric connecting plate 233 to move away from the first electric connecting plate 232 under the drive of the first spring 241, the second electric connecting plate 233 cannot be bent due to the fact that the rectangular teeth 234 and the seam line teeth 235 are arranged on the second electric connecting plate 233, after the first electric connecting plate 232 and the second electric connecting plate 233 are separated from contact, the circuit of the neck pressing component 4 and the uniform laminar flow directional guide device 5 is disconnected, the neck pressing component 4 automatically retracts to the original position after being powered off, the uniform laminar flow directional guide device 5 stops working, meanwhile, the motor 6 is disconnected, the uniform control type automatic intermittent placement device 3 stops working, the PICC catheter is placed when the patient exhales, the PICC catheter is stopped being placed when the patient exhales, the characteristics of the blood flow velocity of the upper cavity vein are increased, and the PICC catheter is prevented from entering the internal jugular vein in a different positions when the patient exhales by utilizing the characteristics of the human body.
As shown in fig. 1, fig. 2, fig. 3, fig. 5 and fig. 9, the neck pressing assembly 4 includes a neck pressing plate 41, a telescopic assembly second 42, a pressing contact 43 and an electric telescopic rod 44, the fixing frame 1 is provided with the supporting block 13, the electric telescopic rod 44 penetrates through the supporting block 13 to be arranged, one end of the electric telescopic rod 44 is arranged on the fixing frame 1, the fixing frame 1 and the supporting block 13 support and fix the electric telescopic rod 44, the neck pressing plate 41 is arranged on the other end of the electric telescopic rod 44, the telescopic assembly second 42 includes a spring second 421 and a telescopic column second 422, the spring second 421 and the telescopic column second 422 are arranged on the neck pressing plate 41, the pressing contact 43 is arranged on the telescopic assembly second 42, the neck pressing assembly 4 switch is closed, when a patient inhales, the neck pressing assembly 4 switch is closed, after the electric telescopic rod 44 is electrified and starts to stretch after the electric telescopic plate first 232 and the electric telescopic plate second 233 are mutually contacted, the jugular vein of the patient is prevented from entering the jugular vein by the ectopic catheter of the patient, when the patient exhales, the electric telescopic plate first 232 and the electric telescopic plate second 233 breaks away from the electric telescopic rod 44 and stops pressing the jugular vein of the patient, and starts to press the internal vein of the patient, and the PICC starts to contract by pressing the electric telescopic rod 43.
As shown in fig. 1, fig. 2, fig. 3, fig. 12, fig. 13, fig. 14 and fig. 15, the outer ring of the first guide wheel 332 and the outer ring of the second guide wheel 334 are provided with a silica gel coating, friction force between the first guide wheel 332 and the PICC catheter is increased, the catheter sleeve 8 is arranged on the supporting plate 32, the catheter sleeve 8 is used for guiding the PICC catheter to enter peripheral veins, meanwhile, the catheter sleeve 8 is longer, so that the PICC catheter between the first guide wheel 332 and the arms has enough length, after the catheter is put into the position, the force application end is far away from the arms, the bending of the catheter is easier to be found, the problem that the hands of a nurse are large and the force application hand is very close to the arms of the patient in the past manual operation is avoided, the nurse possibly does not feel much pain to the patient when the catheter is put into the position, the arm is convenient to put on the arm support 12, the trunk is right angle to the trunk, meanwhile, the patient can use the semi-lying position for carrying the fixing frame 1 to perform an operation, the support of the arm support 12 is not needed, and the pain of the patient is not needed to be relieved; because the arm of the patient is right-angled with the trunk, the included angle between the subclavian vein and the superior vena cava of the patient is obtuse, so that the PICC catheter can directly enter the superior vena cava, and the angle between the internal jugular vein and the subclavian vein is acute, the PICC catheter can be effectively prevented from entering the internal jugular vein, and the ectopic catheter is avoided; because the patient can adopt the posture of semi-lying position to perform the operation, PICC pipe more easily gets into the vena cava on the effect of gravity, avoid the pipe dystopy, connecting band 22 has the elasticity, be equipped with fixed orifices 14 on the mount 1, the usable tie-down area is binded mount 1 in one side of patient's health, the maintenance and dismantlement have been made things convenient for, motor 6 is equipped with band-type brake device and connects on the circuit of motor in parallel, the motor is on the electricity, band-type brake device also is on the electricity, band-type brake device breaks away from the motor output shaft, the motor normal operating, when the outage, the band-type brake release tightly holds the output shaft of motor, the motor can not rotate.
When the device is particularly used, a patient sits and stands in a semi-lying position, the patient places the arm to be punctured along the direction of the guide arm 11 through the arm bearing support 12 and the catheter pushing frame 31, a nurse passes through the fixing hole 14 by using the binding belt, the self-oriented laminar flow channel respiration follow-up stepping PICC catheter anti-ectopic device is fixed on the trunk of the patient, the neck pressing component 4, the homomorphic laminar flow orientation guide device 5 and the switch of the motor 6 are disconnected, the actual single-time imbedding length of the catheter is determined according to the condition of the patient, the initial single-time imbedding length of the catheter is determined according to the relative positions of the angle disc I and the angle disc II, if the actual single-time imbedding length of the catheter is overlong or too short compared with the initial single-time imbedding length of the catheter, the adjusting handle 342 is rotated anticlockwise, the adjusting handle 342 drives the first gear 341 to rotate anticlockwise, the first gear 341 drives the second gear 343 and the third gear 345 to rotate clockwise, the inner ring gear teeth of the third gear 345 dial the unidirectional teeth 349 clockwise, the unidirectional teeth 349 are driven by the third gear 345 to rotate clockwise, when the gear teeth of the unidirectional teeth 349 contact the curved surface of the second slider 356, the unidirectional teeth 349 apply downward pressure to the second slider 356, the second slider 356 presses the fourth spring 357 and the fourth telescopic column 358 to slide downwards so that the unidirectional teeth 349 can pass through the second slider 356, when the unidirectional teeth 349 pass through the position of the fourth slider, the unidirectional teeth 349 contact the first slider 353, and meanwhile, the second slider 356 rises under the action of the fourth spring 357, so that the vertical surface of the second slider 356 contacts the unidirectional teeth 349, the unidirectional teeth 349 can not reversely rotate to press the first slider 356, the unidirectional teeth 349 continuously rotate to press the first slider 353, because the first slider 353 is spherical in shape, the unidirectional teeth 349 have downward pressure to the first slider 353, the first slider 353 drives the fourth spring 354 and the fourth telescopic column 355 to move downwards, so that the teeth of the unidirectional teeth 349 can pass through the first slider 353, after the teeth of the unidirectional teeth 349 pass through the first slider 353, the first slider 353 is restored to the original position under the action of the fourth spring 354 and the fourth telescopic column 355, the third gear 345 is driven by the adjusting handle 342 to rotate continuously, the unidirectional teeth 349 pass through the first limit column 351 and the second limit column 352 continuously, the driving gear 346 cannot rotate around the driving shaft 347 due to the arrangement of the band-type brake device on the motor 6, the smaller the coincident teeth of the third gear 345 and the driving gear 346 are, the larger the rotating angle of the first clamping gear 331 is driven by the third gear 345 and the driving gear 346 is when the motor 6 is electrified to rotate, the longer the length of the catheter which is put in a single time is, the more the number of teeth that the third gear 345 and the driving gear 346 overlap, the smaller the angle that the third gear 345 and the driving gear 346 drive the first clamping gear 331 to rotate when the motor 6 is powered on and rotates, the shorter the length of the catheter that is put into once, when it is judged by the first angle dial 36 and the second angle dial 37 that the third gear 345 has been adjusted to a proper angle, i.e. the length of the catheter that is put into once reaches the expectation, the adjusting handle 342 is rotated clockwise, when it is found that the adjusting handle 342 cannot rotate, the teeth of the unidirectional tooth 349 encounter the vertical surface of the slider 356, the teeth of the unidirectional tooth 349 are fully engaged with the first and second limit posts 351 and 352, at this time the unidirectional tooth 349 is fully engaged with the third gear 345, because the positions of the first and second limit posts 351 are unchanged relative to the driving gear, the number of gear teeth is set such that whenever one tooth of unidirectional tooth 349 is fully engaged with third gear 345, one tooth is between first 353 and second 356 slides and the overlapping tooth portions of third gear 345 and drive gear 346 are fully overlapped. After the position of the third gear 345 is regulated, a nurse passes through the middle position of the first guide wheel 332 and the second guide wheel 334, after the catheter head is placed into the peripheral vein of a patient through the catheter sleeve 8, the motor 6 is closed, the motor 6 drives the driving shaft 347 and the driving gear 346 to rotate, due to the arrangement of the limiting post II 352, the unidirectional teeth 349 are mutually meshed with the gear teeth inside the third gear 345, under the driving of the unidirectional teeth 349, the third gear 345 and the driving gear 346 concentrically rotate, the first clamping gear 331 is driven by the third gear 345 and the driving gear 346 to rotate, the second clamping gear 333 is driven by the first clamping gear 331 to reversely rotate, the first clamping gear 331 and the second clamping gear 333 drive the first guide wheel 332 and the second guide wheel 334 to reversely rotate, under the clamping of the first guide wheel 332 and the second guide wheel 334, the catheter is stably placed in the peripheral intravenous vessel of a patient at a constant speed, after the catheter head reaches the shoulder position according to the reading of the code table 7, the motor 6 switch is switched off, the neck pressing component 4 and the homogeneous laminar flow directional guide device 5 switch are switched on, the motor 6 switch is switched on, the patient is simultaneously subjected to deep inhalation, the chest cavity outline of the patient is expanded and the pressure bearing plate 21 is extruded when the patient inhales, the top block 231 drives the electric coupling plate II 233 to move towards the position of the electric coupling plate I232 and contact the electric coupling plate I232 under the driving of the pressure bearing plate 21, after the electric coupling plate II 233 contacts the electric coupling plate I232, the neck pressing component 4 and the homogeneous laminar flow directional guide device 5 are connected in a circuit, the homogeneous laminar flow directional guide device 5 injects isotonic normal saline into the catheter, the electric telescopic rod 44 stretches, the neck pressing plate 41, the telescopic component II 42 and the pressing contact 43 are driven to move towards the neck direction of the patient, and the neck vein of the patient is extruded, when the patient exhales, the motor 6 switch is turned off, the catheter stops being put in, the uniform laminar flow directional guide device 5 stops working, the neck pressing component 4 returns to the original position after being powered off, a nurse checks whether the patient has discomfort and then lets the patient inhale deeply again, the motor 6 switch is turned on, and the catheter is put in repeatedly until the catheter reaches the designated position.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
The invention and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the invention as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present invention.

Claims (5)

1. From directional laminar flow passageway breathing follow-up step-type PICC pipe anti-ectopic device, its characterized in that: the automatic control type automatic breathing follow-up device is arranged on the fixed frame, the fixed frame is provided with a guide arm, the automatic control type automatic intermittent follow-up device is arranged at one end of the guide arm, the neck pressing assembly is arranged on the fixed frame, the uniform laminar flow directional guide device comprises a uniform dilution bin, a uniform dilution liquid interface and a pressure pump, the uniform dilution bin is arranged on the fixed frame, the uniform dilution liquid interface is arranged on the uniform dilution bin, and the pressure pump is arranged on the upper wall of the uniform dilution bin and is communicated with the uniform dilution bin;
the uniform control type self-intermittent imbedding device comprises a catheter pushing frame, a supporting plate, a motor, a stopwatch, a uniform control type catheter stepping device, a self-intermittent catheter pushing distance adjusting component and a catheter sleeve, wherein the catheter pushing frame is arranged at one end of a guiding arm, the supporting plate is arranged in the catheter pushing frame, and the motor and the stopwatch are arranged on the catheter pushing frame;
The self-intermittent catheter pushing distance adjusting component and the uniform control catheter stepping device are arranged on the supporting plate; the self-intermittent catheter pushing distance adjusting component comprises a first gear, a second gear, a third gear, a driving shaft, a fixed shaft, a one-way gear and a limit post module, wherein the first gear is movably arranged on the upper wall in a catheter pushing frame, the first gear is provided with an adjusting handle, the adjusting handle is arranged on the catheter pushing frame in a penetrating mode, the second gear is provided with a bearing sleeve, the second gear is movably arranged on the upper wall in the catheter pushing frame through the bearing sleeve, the second gear and the first gear are meshed with each other, the third gear is arranged on the bottom wall of the second gear, the third gear and the second gear are arranged in concentric circles, the third gear is arranged in an incomplete gear mode, teeth are arranged in the third gear, the driving gear is movably arranged at the lower end of the third gear, one end of the driving shaft penetrates through the third gear and the driving gear is movably connected to a supporting plate, the other end of the driving shaft penetrates through a bearing sleeve and the output end of a motor, the driving gear is arranged in an incomplete gear mode, the fixed shaft and the limit post module is arranged on the driving gear, the one-way teeth are movably arranged on the fixed shaft, the one-way gear and the second gear is meshed with the first gear, the one-way gear and the first telescopic post and the second telescopic post is arranged on the one-way gear is arranged on the one-shaped telescopic post, the one-way post and the one-shaped telescopic post, the two-shaped telescopic post is arranged on the one telescopic post, the one telescopic post is and the one telescopic post is the telescopic post, and the one telescopic post is arranged the telescopic post, and the one telescopic post. The bearing sleeve is provided with an angle dial I, the driving shaft is provided with an angle dial II, the angle dial I is movably arranged on the catheter pushing frame, the angle dial II is movably arranged on the angle dial I, the outline of the angle dial I corresponds to the shape of the gear teeth of the outer ring of the third gear, and the outline of the angle dial II corresponds to the shape of the gear teeth of the outer ring of the driving gear;
The uniform control type catheter stepping device comprises a first clamping gear, a first guide wheel, a second clamping gear, a second guide wheel and a supporting shaft, wherein the first guide wheel is movably arranged on a supporting plate, the first clamping gear is arranged on the first guide wheel, the first clamping gear is meshed with a third gear, the first clamping gear is meshed with a driving gear, the second guide wheel is movably arranged on the supporting plate, the second clamping gear is arranged on the second guide wheel, the first clamping gear is meshed with the second clamping gear, the outer rings of the first guide wheel and the second guide wheel are concave, one end of the supporting shaft is arranged on the second clamping gear, and the other end of the supporting shaft penetrates through a catheter pushing frame to be connected to a stopwatch;
the self-control type breathing follow-up device comprises a bearing plate, a connecting belt and an electric connection control assembly, wherein the electric connection control assembly penetrates through a fixing frame, the bearing plate is arranged on the electric connection control assembly, one end of the connecting belt is connected with the bearing plate, the other end of the connecting belt is connected with the fixing frame, a first telescopic assembly is arranged on the bearing plate and comprises a first spring and a first telescopic column, one ends of the first spring and the first telescopic column are arranged on the bearing plate, the other ends of the first spring and the first telescopic column are arranged on the fixing frame, and a plurality of groups of first telescopic assemblies are arranged; the electric coupling control assembly comprises a jacking block, an electric coupling plate I and an electric coupling plate II, wherein the jacking block movably penetrates through the fixing frame, one end of the jacking block is arranged on the bearing plate, the electric coupling plate I is arranged on the fixing frame, the electric coupling plate I is magnetic, one end of the electric coupling plate II is arranged on the fixing frame, rectangular teeth and seam line teeth are arranged at the other end of the electric coupling plate II, the rectangular teeth are arranged close to the electric coupling plate I, the seam line teeth are arranged close to the jacking block, and the other end of the jacking block is arranged on the electric coupling plate II;
The neck pressing assembly comprises a neck pressing plate, a second telescopic assembly, a pressing contact and an electric telescopic rod, wherein the supporting block is arranged on the fixing frame, the electric telescopic rod penetrates through the supporting block, one end of the electric telescopic rod is arranged on the fixing frame, the neck pressing plate is arranged at the other end of the electric telescopic rod, the second telescopic assembly is arranged on the neck pressing plate, the second telescopic assembly comprises a second spring and a second telescopic column, the second spring and the second telescopic column are arranged on the neck pressing plate, and the pressing contact is arranged on the second telescopic assembly.
2. The self-orienting laminar flow channel breathing follow-up stepped PICC catheter anti-ectopic device of claim 1, wherein: the outer ring of the first guide wheel and the outer ring of the second guide wheel are provided with silica gel coatings, and the guide tube is sleeved on the supporting plate.
3. The self-orienting laminar flow channel breathing follow-up stepped PICC catheter anti-ectopic device of claim 2, wherein: the fixing frame is provided with an arm bearing support.
4. The self-orienting laminar flow channel breathing follow-up stepped PICC catheter anti-ectopic device of claim 3, wherein: the fixing frame is provided with a fixing hole, and the connecting belt has elasticity.
5. The self-orienting laminar flow channel breathing follow-up stepped PICC catheter anti-ectopic device of claim 4, wherein: the motor is provided with a band-type brake device and is connected in parallel to a circuit of the motor.
CN202210532875.0A 2022-05-17 2022-05-17 Self-oriented laminar flow channel breathing follow-up stepping PICC catheter ectopic prevention device Active CN114949543B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203861318U (en) * 2013-09-25 2014-10-08 上海市嘉定区中心医院 Picc puncturing system
AT516898A1 (en) * 2015-03-11 2016-09-15 Klepetko Walter Prof Dr The cannula assembly
CN111359078A (en) * 2020-04-14 2020-07-03 首都医科大学附属北京朝阳医院 Prevent compressor of PICC catheterization internal jugular vein dystopy
CN213406337U (en) * 2020-06-22 2021-06-11 陈王丽 Auxiliary device for PICC
CN112190818B (en) * 2020-10-12 2022-10-21 于涛 PICC catheter implantation frame capable of avoiding catheter dislocation
CN113100866A (en) * 2021-05-20 2021-07-13 中国人民解放军陆军军医大学第一附属医院 Pressure device for blocking internal jugular vein

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