Wrist fixator for arteriopuncture

Abstract

The invention discloses a wrist fixator for arteriopuncture. The wrist fixator comprises a fixing base, a fixing belt, a shell, a pulse sensing rod assembly, a pulse visual feedback mechanism and a linkage mechanism. The fixing seat supports the hand, the fixing belt wraps and fixes the wrist, and the shell is arranged on the fixing belt. The pulse sensing rod assembly penetrates into the shell from the skin attaching side. The pulse visual feedback mechanism is arranged on the shell; the linkage mechanism is located in the shell and driven by the pulse sensing rod assembly to drive the pulse visual feedback mechanism to rotate, and pulse beating of a patient is fed back in real time. The wrist fixator for arterial puncture has a visual feedback function, and the success rate of puncture is effectively increased.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a wrist fixation device for arterial puncture. Background Technology

[0002] Arterial puncture is a common clinical diagnostic and treatment procedure. Radial artery puncture is widely used due to its convenience and low complication rate. Accurate arterial localization is crucial for successful puncture. Currently, commonly used wrist immobilizers for arterial puncture lack visual feedback, only providing simple wrist restraint. Medical staff must rely on tactile sensation to locate the artery. This method is highly susceptible to variations in arterial size, pulsation strength, subcutaneous fat thickness, and the experience of the medical staff, resulting in extremely low localization accuracy and a high risk of puncture point deviation, leading to a low success rate. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a wrist fixation device for arterial puncture, which has a visual feedback function and effectively improves the puncture success rate.

[0004] The objective of this invention is achieved through the following technical solution:

[0005] A wrist fixation device for arterial puncture includes: a fixation base, a fixation strap, a housing, a pulse sensing rod assembly, a pulse visual feedback mechanism, and a linkage mechanism;

[0006] The support is used to support the patient's hand;

[0007] Both ends of the fixing strap are movably connected to the fixing base, and the fixing strap is used to wrap around and fix the patient's wrist;

[0008] The housing is disposed on the fixing strap, and the housing has an accommodating space inside;

[0009] The pulse sensing rod assembly is movably inserted through the housing from the side that fits against the patient's wrist skin and extends into the accommodating space;

[0010] The pulse visual feedback mechanism is disposed on the housing and is used to provide feedback on the patient's pulse beat.

[0011] The linkage mechanism is located within the accommodating space. The linkage mechanism is driven by the pulse sensing rod assembly to drive the pulse visual feedback mechanism to rotate and provide feedback on the patient's pulse beat.

[0012] Furthermore, the pulse sensing rod assembly includes a sensing lifting rod and a sensing contact; the housing has a through hole that connects to the external environment and the accommodating space, and a lifting guide sleeve is provided in the accommodating space; the sensing lifting rod passes through the through hole and the lifting guide sleeve in sequence; the sensing lifting rod is connected to the sensing contact, and the sensing contact is used to conform to the patient's wrist skin to sense the pulse.

[0013] Furthermore, the wrist fixation device for arterial puncture also includes a booster device, which includes a booster spring and a fitting ring. The booster spring and the fitting ring are respectively arranged around the periphery of the sensing lifting rod, and the two ends of the booster spring are respectively connected to the fitting ring and the sensing lifting rod. The fitting ring is used to fit the patient's wrist skin, and the booster spring is used to provide a driving force to drive the sensing lifting rod to rise when the sensing contact connected to the sensing lifting rod senses the patient's pulse and rises.

[0014] Furthermore, both the sensing contact and the bonding ring are provided with an organosilicon gel layer, which is used to adhere to the patient's wrist skin.

[0015] Furthermore, the linkage mechanism includes a force-amplifying lever, a piston cylinder, a lifting piston rod, and a compression telescopic rod; the force-amplifying lever has a pivot shaft, which is pivotally connected to the accommodating space, and the force-amplifying lever is operatively connected to the sensing lifting rod; the piston cylinder is disposed within the accommodating space, and the gas accommodating chamber of the piston cylinder contains compressed gas; the lifting piston rod is movably inserted into the piston cylinder and operatively connected to one end of the force-amplifying lever away from the sensing lifting rod, so that the lifting piston rod can be driven by the force-amplifying lever to move up and down, thereby expanding or compressing the size of the gas accommodating chamber; the compression telescopic rod is movably inserted into the side wall of the piston cylinder, and the power end of the compression telescopic rod extends into the gas accommodating chamber, so that it can be pushed out or retracted by the gas in the gas accommodating chamber; the output end of the compression telescopic rod is operatively connected to the pulse visual feedback mechanism, so that it is driven by the compression telescopic rod to provide feedback on the patient's pulse beat.

[0016] Furthermore, the force-increasing lever has an input rod segment and an output rod segment, which are located on opposite sides of the pivot shaft, and the length of the input rod segment is greater than the length of the output rod segment. The input rod segment is hinged to the inductive lifting rod, and the output rod segment is hinged to the lifting piston rod.

[0017] Furthermore, the input rod segment is provided with a first sliding groove, the length direction of the first sliding groove being consistent with the length direction of the input rod segment; the output rod segment is provided with a second sliding groove, the length direction of the second sliding groove being consistent with the length direction of the output rod segment; the inductive lifting rod has a first hinge shaft, the first hinge shaft being slidably engaged with the first sliding groove; the lifting piston rod has a second hinge shaft, the second hinge shaft being slidably engaged with the second sliding groove.

[0018] Furthermore, the extrusion telescopic rod is provided with a return member inside, which is used to drive the extrusion telescopic rod to shorten and reset.

[0019] Furthermore, the pulse visual feedback mechanism includes a visual feedback disk, a rack, a gear, a drive shaft, and a rotational feedback pointer; the visual feedback disk is disposed on the outer wall of the housing, the rack is disposed at the output end of the extrusion telescopic rod, the gear is pivotally connected to the accommodating space and meshes with the rack, and the gear surrounds the drive shaft; the drive shaft is rotatably sleeved on the housing and the visual feedback disk; the rotational feedback pointer is disposed on the visual feedback disk, and the rotational feedback pointer is drively connected to the drive shaft so that it can be driven by the drive shaft to rotate.

[0020] Furthermore, the wrist fixation device for arterial puncture also includes a palm base and a fixing finger sleeve. The palm base is hinged to the fixing base, and the palm base is used to support the patient's palm. The fixing finger sleeve is disposed on the palm base and is used to fix the patient's fingers to prevent them from moving.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. The fixation seat is used to support the patient's hand; both ends of the fixation strap are movably connected to the fixation seat, and the fixation strap is used to wrap around and fix the patient's wrist. This design allows the fixation seat to stably support the patient's hand, while the fixation strap tightly wraps around the wrist for reliable fixation, effectively preventing wrist displacement and movement during puncture, providing a stable operating basis for arterial puncture, and indirectly assisting in improving puncture accuracy.

[0023] 2. Based on the housing disposed on the fixing strap, the housing has an accommodating space; the pulse sensing rod assembly is movably inserted through the housing from the side that fits against the patient's wrist skin and extends into the accommodating space; the pulse visual feedback mechanism is disposed on the housing, and the pulse visual feedback mechanism is used to provide feedback on the patient's pulse beat; the linkage mechanism is disposed within the accommodating space, and the linkage mechanism is driven by the pulse sensing rod assembly to drive the pulse visual feedback mechanism to rotate and provide feedback on the patient's pulse beat. This invention, through the coordinated operation of these three components, converts the pulse beat sensed by the pulse sensing rod assembly into the rotation of the visual feedback mechanism via the linkage mechanism, achieving intuitive visualization of the pulse beat. This solves the problem of unclear pulse perception in traditional punctures, allowing medical personnel to quickly locate the artery and directly improve the puncture success rate.

[0024] 3. Based on the housing mounted on the fixing strap, the housing has an accommodating space; the pulse visual feedback mechanism is mounted on the housing; the linkage mechanism is located within the accommodating space; the pulse sensing rod assembly is movably inserted through the housing from the side that fits against the patient's wrist skin and extends into the accommodating space. This invention integrates fixing, sensing, linkage, and feedback functions into a single unit through a rational layout of components. The structure is compact and rationally arranged. The housing protects the linkage mechanism within the accommodating space from external interference or damage, ensuring the stability and accuracy of pulse sensing and visual feedback, guaranteeing the continuous and effective operation of the visual feedback function, further consolidating the puncture success rate. Simultaneously, the overall structure is simple, facilitating operation and use by medical personnel, and improving the convenience and reliability of puncture procedures. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a wrist fixation device for arterial puncture according to the present invention;

[0026] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0027] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 for Figure 2 A schematic diagram of the structure of the force-increasing lever.

[0029] In the diagram: 1. Fixed base; 2. Fixed strap; 3. Housing; 301. Accommodation space; 3011. Lifting guide sleeve; 4. Pulse sensing rod assembly; 401. Sensing lifting rod; 4011. First hinge shaft; 402. Sensing contact; 5. Pulse visual feedback mechanism; 501. Visual feedback disk; 502. Rack; 503. Gear; 504. Drive shaft; 505. Rotational feedback pointer; 6. Linkage mechanism; 601. Force amplifying lever; 6011. Pivot 6012, Input rod segment; 60121, First slide groove; 6013, Output rod segment; 60131, Second slide groove; 602, Piston cylinder; 603, Lifting piston rod; 6031, Second hinge shaft; 604, Extrusion telescopic rod; 6041, Power end; 6042, Output end; 6043, Return component; 7, Boosting device; 701, Boosting spring; 702, Fitting ring; 8, Organosilicon gel layer; 9, Palm base; 10, Fixed finger sleeve. Detailed Implementation

[0030] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0031] It should be noted that when an element is described as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is described as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] See Figures 1-4 A preferred embodiment of the present invention provides a wrist fixation device for arterial puncture, comprising: a fixation base 1, a fixation strap 2, a housing 3, a pulse sensing rod assembly 4, a pulse visual feedback mechanism 5, and a linkage mechanism 6.

[0034] The fixing seat 1 is used to support the patient's hand;

[0035] The two ends of the fixing strap 2 are respectively movably connected to the fixing base 1, and the fixing strap 2 is used to wrap around and fix the patient's wrist;

[0036] The housing 3 is disposed on the fixing strap 2, and the housing 3 has an accommodating space 301 inside;

[0037] The pulse sensing rod assembly 4 is movably inserted through the housing 3 from the side that fits against the patient's wrist skin and extends into the accommodating space 301;

[0038] The pulse visual feedback mechanism 5 is disposed on the housing 3, and the pulse visual feedback mechanism 5 is used to provide feedback on the patient's pulse beat.

[0039] The linkage mechanism 6 is located within the accommodating space 301. The linkage mechanism 6 is driven by the pulse sensing rod assembly 4 to drive the pulse visual feedback mechanism 5 to rotate and provide feedback on the patient's pulse beat.

[0040] The working principle of this invention is as follows: During operation, the patient's hand is placed on the fixed base 1. The fixed strap 2 is movably connected to the fixed base 1 at both ends, wrapping around and fixing the patient's wrist to ensure stable wrist position during puncture and prevent displacement that could affect puncture accuracy. The housing 3, located on the fixed strap 2, provides a receiving space 301. The pulse sensing rod assembly 4 inside the housing is fitted to the patient's wrist skin and can accurately sense the patient's pulse. When the pulse beats, the pulse sensing rod assembly 4 is activated by the pulse impact, thereby driving the linkage mechanism 6 located in the receiving space 301 of the housing 3. The linkage mechanism 6 transmits and converts the minute movement of the pulse sensing rod assembly 4 into driving power, causing the pulse visual feedback mechanism 5 located on the housing 3 to rotate. Medical personnel can visually obtain the patient's pulse position and beating status by observing the rotation of this mechanism, and quickly locate the arterial puncture point. The entire process utilizes the synergistic effect of pulse sensing, linkage transmission, and visual feedback to clearly present pulse information, assisting medical staff in accurate puncture, effectively improving the success rate of arterial puncture, and is simple in structure and easy to operate.

[0041] Obviously, the fixing seat 1 is used to support the patient's hand; the two ends of the fixing strap 2 are respectively movably connected to the fixing seat 1, and the fixing strap 2 is used to wrap around and fix the patient's wrist. This design of the present invention allows the fixing seat 1 to stably support the patient's hand, and the fixing strap 2 to tightly wrap around the wrist and achieve reliable fixation, effectively preventing the patient's wrist from shifting or shaking during puncture, providing a stable operating basis for arterial puncture, and indirectly assisting in improving puncture accuracy.

[0042] The housing 3 is mounted on the fixing strap 2, and the housing 3 has an accommodating space 301. The pulse sensing rod assembly 4 is movably inserted through the housing 3 from the side that fits against the patient's wrist skin and extends into the accommodating space 301. The pulse visual feedback mechanism 5 is mounted on the housing 3 and is used to provide feedback on the patient's pulse. The linkage mechanism 6 is located within the accommodating space 301 and is driven by the pulse sensing rod assembly 4 to rotate the pulse visual feedback mechanism 5 to provide feedback on the patient's pulse. This invention, through the coordinated operation of these three components, converts the pulse sensed by the pulse sensing rod assembly 4 into the rotation of the visual feedback mechanism via the linkage mechanism 6, achieving intuitive visualization of the pulse. This solves the problem of unclear pulse sensing in traditional puncture procedures, allowing medical personnel to quickly locate the artery and directly improve the success rate of puncture.

[0043] Based on the housing 3 mounted on the fixing strap 2, the housing 3 has an accommodating space 301; the pulse visual feedback mechanism 5 is mounted on the housing 3; the linkage mechanism 6 is located within the accommodating space 301; the pulse sensing rod assembly 4 is movably inserted through the housing 3 from the side that fits against the patient's wrist skin and extends into the accommodating space 301. This invention integrates fixing, sensing, linkage, and feedback functions into a single unit through a reasonable layout of components. The structure is compact and rationally arranged. The housing 3 protects the linkage mechanism 6 within the accommodating space 301 from external interference or damage, ensuring the stability and accuracy of pulse sensing and visual feedback, guaranteeing the continuous and effective operation of the visual feedback function, further consolidating the puncture success rate. Simultaneously, the overall structure is simple, facilitating operation and use by medical personnel, and improving the convenience and reliability of puncture procedures.

[0044] refer to Figure 2 Preferably, the pulse sensing rod assembly 4 includes a sensing lifting rod 401 and a sensing contact 402; the housing 3 has a through hole, which connects to the external environment and the accommodating space 301. A lifting guide sleeve 3011 is provided within the accommodating space 301. The sensing lifting rod 401 passes sequentially through the through hole and the lifting guide sleeve 3011. The sensing lifting rod 401 is connected to the sensing contact 402, which is used to contact the patient's wrist skin to sense the pulse. This arrangement allows the sensing contact 402 to closely contact the wrist skin, accurately capturing subtle pulse beats. The sensing lifting rod 401 is guided by the lifting guide sleeve 3011, ensuring smooth and unbiased movement and avoiding feedback effects due to sensing deviations. The through hole and lifting guide sleeve 3011 work together to ensure the flexible movement of the sensing lifting rod 401 and prevent external impurities from entering the accommodating space 301 and damaging the linkage mechanism 6, further improving the accuracy and stability of pulse sensing, providing a reliable signal for visual feedback, and helping to improve the success rate of puncture.

[0045] refer to Figure 2 Preferably, the wrist fixation device for arterial puncture further includes a booster device 7, which includes a booster spring 701 and a contact ring 702. The booster spring 701 and the contact ring 702 are respectively arranged around the periphery of the sensing lifting rod 401. The two ends of the booster spring 701 are respectively connected to the contact ring 702 and the sensing lifting rod 401. The contact ring 702 is used to fit the patient's wrist skin, and the booster spring 701 is used to provide a driving force to drive the sensing lifting rod 401 to rise when the sensing contact 402 connected to the sensing lifting rod 401 senses the patient's pulse and rises. This arrangement enhances the fit with the wrist skin through the contact ring 702, and, together with the booster spring 701, provides auxiliary lift when the pulse is pulsating, amplifies the range of motion of the sensing lifting rod 401, avoids the inaccurate capture of subtle pulse beats, and improves sensing sensitivity. Meanwhile, the booster spring 701 assists the sensing lifting rod 401 in quickly resetting, ensuring continuous and accurate sensing of subsequent pulse beats, further guaranteeing clear and timely visual feedback, providing more reliable support for medical staff to locate the artery, and helping to further improve the puncture success rate. The booster spring 701 can be a low-stress miniature pagoda spring or a disc spring.

[0046] refer to Figure 2 Preferably, both the sensing contact 402 and the fitting ring 702 are provided with a silicone gel layer 8, which is used to adhere to the patient's wrist skin. This arrangement enables a tight bond between the sensing contact 402, the fitting ring 702, and the wrist skin through the silicone gel layer 8, enhancing the fit and sealing, preventing the sensing contact 402 from shifting due to skin slippage, ensuring accurate pulse capture, providing a stable signal for visual feedback, and helping to improve the success rate of puncture. Simultaneously, the silicone gel layer 8 is soft, biocompatible, non-irritating, and does not damage the skin when applied, making it suitable for patients with different skin types. Its moderate adhesion ensures a firm fit while allowing for easy removal after puncture without leaving adhesive residue, improving patient comfort. It also further fixes the position of the sensing components, ensuring stable operation of the sensing and propulsion functions. The silicone gel layer 8 can be made of medical-grade silicone gel to ensure safety.

[0047] refer to Figure 2 and Figure 3Preferably, the linkage mechanism 6 includes a force-amplifying lever 601, a piston cylinder 602, a lifting piston rod 603, and a compression telescopic rod 604; the force-amplifying lever 601 has a pivot shaft 6011, which is pivotally connected to the accommodating space 301, and the force-amplifying lever 601 is operatively connected to the sensing lifting rod 401; the piston cylinder 602 is disposed in the accommodating space 301, and the gas accommodating chamber of the piston cylinder 602 contains compressed gas; the lifting piston rod 603 is movably inserted into the piston cylinder 602 and is located on the force-amplifying lever 601 away from the sensing lifting rod 404. One end of the lifting rod 401 is driven to be connected to the lifting piston rod 603, which is then driven by the amplifying lever 601 to expand or compress the gas chamber. The compression telescopic rod 604 is movably inserted into the side wall of the piston cylinder 602. The power end 6041 of the compression telescopic rod 604 extends into the gas chamber, so that it can be pushed out or retracted by the gas in the gas chamber. The output end 6042 of the compression telescopic rod 604 is driven to connect to the pulse visual feedback mechanism 5, so that it can be driven by the compression telescopic rod 604 to provide feedback on the patient's pulse. This configuration amplifies the minute lifting motion of the sensing lifting rod 401 through the amplifying lever 601. Combined with the conduction of compressed gas in the piston cylinder 602, the linear lifting motion is converted into the extension and retraction motion of the compression telescopic rod 604, achieving accurate transmission and amplification of the pulse signal and preventing the failure of subtle pulse signals to drive the visual feedback mechanism. Meanwhile, the smooth and rapid transmission of all components ensures accurate transmission of the pulse frequency and amplitude, guaranteeing clear and synchronized rotation of the visual feedback mechanism. This further enhances the accuracy of visual feedback, assisting medical personnel in quickly locating arteries and effectively improving the success rate of punctures. The compressed gas inside the piston cylinder 602 can utilize medical-grade inert gas, ensuring safety and transmission stability.

[0048] refer to Figure 4Preferably, the force-amplifying lever 601 has an input segment 6012 and an output segment 6013, which are located on opposite sides of the pivot shaft 6011. The length of the input segment 6012 is greater than that of the output segment 6013. The input segment 6012 is hinged to the sensing lifting rod 401, and the output segment 6013 is hinged to the lifting piston rod 603. This configuration utilizes the lever principle, and the structural design of the input segment 6012 being longer than the output segment 6013 achieves a force-amplifying effect while saving effort. It further amplifies the minute displacement of the sensing lifting rod 401 caused by the pulse, ensuring that even an extremely weak pulse can drive the lifting piston rod 603 to produce a sufficient lifting amplitude, which in turn drives the visual feedback mechanism to move clearly through the piston cylinder 602 and the compression telescopic rod 604. Meanwhile, the articulated connection ensures smooth, uninterrupted transmission, reduces transmission losses, and guarantees the accuracy and synchronization of pulse signal transmission. This further enhances visual feedback, providing strong support for medical staff to accurately locate arteries and helping to improve the success rate of punctures. The length ratio of the input segment 6012 to the output segment 6013 can be flexibly set according to the pulse sensing sensitivity requirements, adapting to the pulse intensity of different patients.

[0049] refer to Figure 2 and Figure 4 Preferably, the input rod segment 6012 is provided with a first sliding groove 60121, the groove length direction of the first sliding groove 60121 is consistent with the rod length direction of the input rod segment 6012; the output rod segment 6013 is provided with a second sliding groove 60131, the groove length direction of the second sliding groove 60131 is consistent with the rod length direction of the output rod segment 6013; the sensing lifting rod 401 has a first hinge shaft 4011, the first hinge shaft 4011 is slidably engaged with the first sliding groove 60121; the lifting piston rod 603 has a second hinge shaft 6031, the second hinge shaft 6031 is slidably engaged with the second sliding groove 60131. This configuration, through the sliding engagement of the first slide groove 60121 with the first hinge shaft 4011 and the second slide groove 60131 with the second hinge shaft 6031, provides a margin of movement for the hinge joints of the sensing lifting rod 401 and the input rod segment 6012, and the lifting piston rod 603 and the output rod segment 6013. This avoids transmission jamming or component wear caused by component assembly errors or fluctuations in pulse amplitude, ensuring that the force-amplifying lever 601 rotates flexibly and transmits smoothly. Simultaneously, it can adaptively adjust to displacement deviations of the sensing lifting rod 401 and the lifting piston rod 603, ensuring stable force amplification and guaranteeing that the minute pulse signal can be accurately transmitted and amplified. This further enhances the stability and accuracy of visual feedback, assisting medical personnel in accurately locating arteries and indirectly improving the puncture success rate. The slide grooves can be rectangular or arc-shaped to adapt to the sliding trajectory of the hinge shaft, improving the stability of the engagement.

[0050] refer to Figure 3 Preferably, the compression telescopic rod 604 is internally provided with a return member 6043, which is used to drive the compression telescopic rod 604 to shorten and reset. This configuration allows the return member 6043 to provide a stable reset driving force for the compression telescopic rod 604. When the driving force generated by the pulse disappears, the return member 6043 can quickly drive the compression telescopic rod 604 to shorten and reset, ensuring that the compression telescopic rod 604 extends and retracts synchronously with the pulse frequency. This avoids the visual feedback mechanism from being stuck or lagging due to the compression telescopic rod 604's inability to reset in time, ensuring the continuity and accuracy of visual feedback. At the same time, it can also prevent the compression telescopic rod 604 from affecting the transmission of the next pulse signal due to untimely reset, ensuring that every tiny fluctuation of the pulse can be clearly fed back, further improving the transmission stability of the linkage mechanism 6, providing reliable support for medical personnel to observe the pulse status in real time and accurately locate the artery, and helping to improve the puncture success rate. The return component 6043 can be a tension spring or a torsion spring, adapted to the internal structure of the compression telescopic rod 604, to ensure rapid reset response and stable force.

[0051] refer to Figure 1 and Figure 2 Preferably, the pulse visual feedback mechanism 5 includes a visual feedback disk 501, a rack 502, a gear 503, a drive shaft 504, and a rotational feedback pointer 505; the visual feedback disk 501 is disposed on the outer wall of the housing 3, the rack 502 is disposed on the output end 6042 of the compression telescopic rod 604, the gear 503 is pivotally connected to the accommodating space 301 and meshes with the rack 502, and the gear 503 surrounds the periphery of the drive shaft 504; the drive shaft 504 is rotatably sleeved on the housing 3 and the visual feedback disk 501; the rotational feedback pointer 505 is disposed on the visual feedback disk 501, and the rotational feedback pointer 505 is drively connected to the drive shaft 504 so that it can be driven by the drive shaft 504 to rotate. This configuration, through the meshing of rack 502 and gear 503, converts the linear extension / retraction motion of the compression telescopic rod 604 into the rotational motion of gear 503, which is then transmitted via drive shaft 504 to the rotational feedback pointer 505, achieving precise conversion of pulse signals into visual rotational feedback. The visual feedback disc 501 is located on the outer wall of the housing 3 for easy observation by medical personnel. The rotation amplitude and frequency of the rotational feedback pointer 505 precisely correspond to the pulse, clearly presenting the pulse status. Simultaneously, the smooth transmission and precise transmission ratio of gear 503 and rack 502 reduce signal transmission loss, ensuring the accuracy and synchronization of visual feedback, further assisting medical personnel in quickly locating arteries and improving the success rate of puncture. Notably, gear 503 and rack 502 can employ precision miniature structures to adapt to the overall layout of the device, enhancing transmission stability.

[0052] refer to Figure 1 and Figure 2 Preferably, the wrist fixation device for arterial puncture further includes a palm base 9 and a fixing finger sleeve 10. The palm base 9 is hinged to the fixing base 1, and the palm base 9 supports the patient's palm. The fixing finger sleeve 10 is disposed on the palm base 9 and is used to fix the patient's fingers to prevent them from shifting. This configuration allows for flexible adjustment of the angle of the palm base 9 through the hinged connection between the palm base 9 and the fixing base 1, adapting to different patients' hand positions and ensuring that the wrist is in the most comfortable position for arterial puncture. At the same time, the palm base 9 stably supports the patient's palm, preventing hand movement from causing wrist displacement. The fixing finger sleeve 10 effectively fixes the patient's fingers, preventing finger movement from being transmitted to the wrist, further strengthening the wrist fixation effect, avoiding pulse sensing deviation and inaccurate visual feedback caused by overall hand movement during puncture, ensuring the stability of the puncture operation, providing good conditions for medical personnel to accurately locate the artery, and helping to improve the puncture success rate. Among them, the fixed finger sleeve 10 can adopt an adjustable structure to adapt to fingers of different thicknesses, improving the adaptability and comfort of use.

[0053] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0054] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0055] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A wrist fixation device for arterial puncture, characterized in that, include: Fixing seat (1), the fixing seat (1) is used to support the patient's hand; Fixing strap (2), the two ends of the fixing strap (2) are movably connected to the fixing seat (1) respectively, and the fixing strap (2) is used to wrap around the patient's wrist and fix it; The housing (3) is disposed on the fixing belt (2) and has an accommodating space (301) inside. A pulse sensing rod assembly (4) is movably inserted through the housing (3) from the side that fits against the patient's wrist skin and extends into the receiving space (301); A pulse visual feedback mechanism (5) is provided on the housing (3) and is used to provide feedback on the patient's pulse. Linkage mechanism (6), which is located in the accommodating space (301), is driven by the pulse sensing rod assembly (4) to drive the pulse visual feedback mechanism (5) to rotate and provide feedback on the patient's pulse beat.

2. The wrist fixation device for arterial puncture according to claim 1, characterized in that, The pulse sensing rod assembly (4) includes a sensing lifting rod (401) and a sensing contact (402); the housing (3) is provided with a through hole, which connects the external environment and the accommodating space (301), and a lifting guide sleeve (3011) is provided in the accommodating space (301). The sensing lifting rod (401) passes through the through hole and the lifting guide sleeve (3011) in sequence; the sensing lifting rod (401) is connected to the sensing contact (402), and the sensing contact (402) is used to fit against the patient's wrist skin to sense the pulse.

3. A wrist fixation device for arterial puncture according to claim 2, characterized in that, The wrist fixation device for arterial puncture further includes a booster device (7), which includes a booster spring (701) and a fitting ring (702). The booster spring (701) and the fitting ring (702) are respectively arranged around the periphery of the sensing lifting rod (401). The two ends of the booster spring (701) are respectively connected to the fitting ring (702) and the sensing lifting rod (401). The fitting ring (702) is used to fit the patient's wrist skin. The booster spring (701) is used to provide a driving force to drive the sensing lifting rod (401) to rise when the sensing contact (402) connected to the sensing lifting rod (401) senses the patient's pulse and rises.

4. A wrist fixation device for arterial puncture according to claim 3, characterized in that, Both the sensing contact (402) and the bonding ring (702) are provided with an organosilicon gel layer (8), which is used to bond the patient's wrist skin.

5. A wrist fixation device for arterial puncture according to claim 2, characterized in that, The linkage mechanism (6) includes a force-amplifying lever (601), a piston cylinder (602), a lifting piston rod (603), and a compression telescopic rod (604); the force-amplifying lever (601) has a pivot shaft (6011), which is pivotally connected to the accommodating space (301), and the force-amplifying lever (601) is operatively connected to the inductive lifting rod (401); the piston cylinder (602) is located in the accommodating space (301), and the gas accommodating chamber of the piston cylinder (602) contains compressed gas; the lifting piston rod (603) is movably inserted into the piston cylinder (602) and is located away from the force-amplifying lever (601). One end of the induction lifting rod (401) is driven to be driven by the force-increasing lever (601) to raise and lower the lifting piston rod (603) to expand or compress the size of the gas accommodating cavity; the compression telescopic rod (604) is movably inserted into the side wall of the piston cylinder (602), and the power end (6041) of the compression telescopic rod (604) extends into the gas accommodating cavity so that it can be pushed out or retracted by the gas in the gas accommodating cavity; the output end (6042) of the compression telescopic rod (604) is driven to be connected to the pulse visual feedback mechanism (5) so that it can be driven by the compression telescopic rod (604) to provide feedback on the patient's pulse beat.

6. A wrist fixation device for arterial puncture according to claim 5, characterized in that, The force-increasing lever (601) has an input rod segment (6012) and an output rod segment (6013), the input rod segment (6012) and the output rod segment (6013) are located on opposite sides of the pivot shaft (6011), and the length of the input rod segment (6012) is greater than the length of the output rod segment (6013). The input rod segment (6012) is hinged to the inductive lifting rod (401), and the output rod segment (6013) is hinged to the lifting piston rod (603).

7. A wrist fixation device for arterial puncture according to claim 6, characterized in that, The input rod segment (6012) is provided with a first sliding groove (60121), the length direction of the first sliding groove (60121) is consistent with the length direction of the input rod segment (6012); the output rod segment (6013) is provided with a second sliding groove (60131), the length direction of the second sliding groove (60131) is consistent with the length direction of the output rod segment (6013); the inductive lifting rod (401) has a first hinge shaft (4011), the first hinge shaft (4011) is slidably engaged with the first sliding groove (60121); the lifting piston rod (603) has a second hinge shaft (6031), the second hinge shaft (6031) is slidably engaged with the second sliding groove (60131).

8. A wrist fixation device for arterial puncture according to claim 5, characterized in that, The extrusion telescopic rod (604) is provided with a return member (6043) inside, which is used to drive the extrusion telescopic rod (604) to shorten and reset.

9. A wrist fixation device for arterial puncture according to claim 5, characterized in that, The pulse visual feedback mechanism (5) includes a visual feedback disk (501), a rack (502), a gear (503), a drive shaft (504), and a rotational feedback pointer (505). The visual feedback disk (501) is located on the outer wall of the housing (3). The rack (502) is located at the output end (6042) of the extrusion telescopic rod (604). The gear (503) is pivotally connected to the accommodating space (301) and meshes with the rack (502). The gear (503) surrounds the drive shaft (504). The drive shaft (504) is rotatably sleeved on the housing (3) and the visual feedback disk (501). The rotational feedback pointer (505) is located on the visual feedback disk (501) and is connected to the drive shaft (504) so ​​that it can be driven by the drive shaft (504) to rotate.

10. A wrist fixation device for arterial puncture according to claim 5, characterized in that, The wrist fixation device for arterial puncture further includes a palm base (9) and a fixing finger sleeve (10). The palm base (9) is hinged to the fixing base (1). The palm base (9) is used to support the patient's palm. The fixing finger sleeve (10) is disposed on the palm base (9). The fixing finger sleeve (10) is used to fix the patient's fingers to prevent them from moving.

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