Device for assisting in fixing and pressing invasive artery

Abstract

The invention relates to a device for assisting in fixing and pressing an invasive artery. The device comprises a wrist support, a pressing mechanism capable of being rotationally folded or unfolded and at least one pressing unit detachably arranged on the pressing mechanism. A pressing mechanism is arranged above the front end of the wrist support and comprises a transverse rod and a longitudinal rod, one end of the transverse rod is rotationally connected with the wrist support, the other end of the transverse rod is in bolt connection with the wrist support, and the longitudinal rod is movably arranged in the center of the transverse rod; a composite connecting piece is arranged between the transverse rod and the longitudinal rod, the longitudinal rod can conduct circumferential rotation and translation sliding relative to the transverse rod, and a longitudinal groove is formed in the longitudinal rod. A pressing unit is clamped on the longitudinal rod and slides in the longitudinal groove, a pressing plate with a sterile application is arranged below the pressing unit, and the pressing plate elastically contacts with a puncture part of the skin of a patient downwards. The device can replace manual work to press and fix an arterial duct at a puncture part or press and stop bleeding of the puncture part after the arterial duct is pulled out, and bleeding and swelling are prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a device for assisting in the fixation and compression of an invasive artery. Background Art

[0002] Nowadays, the proportion of elderly patients and critically ill patients undergoing surgical anesthesia is increasing year by year, and the use proportion of invasive arterial pressure monitoring during anesthesia accounts for 40%. Invasive arterial pressure monitoring refers to a method of directly measuring the blood pressure in the artery by inserting an arterial catheter into the artery. This method can continuously and dynamically observe the changes in the patient's circulatory system, enabling medical staff to promptly detect instantaneous abnormal changes in blood pressure, ensuring the continuity and accuracy of blood pressure monitoring, and better reflecting the cardiovascular function of the patient.

[0003] Currently, the arterial catheter is placed in the artery by the arterial puncture and catheterization method. After puncture and catheterization, it is commonly fixed with transparent tape, and then a strip of tape is used to locally strengthen the restraint fixation to achieve the fixation of the arterial catheter during the entire monitoring process. The stability of this conventional fixation method is relatively low. During puncture, the situation of puncture failure may occur, and then re-puncture is required. Before that, it is necessary to press the previous puncture point to prevent bleeding, and the manual pressing time is long.

[0004] After the invasive arterial pressure monitoring is completed, after removing the arterial catheter, gauze is often stacked and pressed at the arterial puncture position, and manual pressing continues for 1 - 2 minutes, and then a strip of tape is used to strengthen the fixation to prevent bleeding and swelling. The whole operation is time-consuming and laborious, and it is difficult to achieve asepsis with gauze pressing, which will increase the occurrence of blood-borne infection and local infection in patients.

[0005] In the prior art, there are also devices that can assist manual pressing. For example, a pressing device after radial artery puncture disclosed in Patent Publication No. CN 207604986U is a strap-type wearable structure that can be worn on the wrist and uses an elastic pressing plate to press the puncture point for hemostasis. However, when the patient is in an anesthetized state during puncture, it is necessary for medical staff to wear it on the patient's wrist, and the operation is cumbersome. Summary of the Invention

[0006] In order to solve the problems of poor stability of arterial catheter fixation and time-consuming and laborious manual pressing for hemostasis, the present invention provides a device for assisting in the fixation and compression of an invasive artery. The wrist is supported by a wrist rest, and then a rotatable, deployable and foldable pressing mechanism is arranged on the wrist rest. At least one pressing unit is detachably mounted on the pressing mechanism, and the pressing unit is used to fix the arterial catheter at the puncture site or press the puncture point after surgery for hemostasis, which saves time and labor, can achieve asepsis, is beneficial to clinical safety, and reduces the work burden of anesthesiologists.

[0007] To achieve the above object, the technical solution adopted by the present invention is as follows: An apparatus for assisting in the fixation and compression of an invasive artery includes a wrist support, a rotatable and foldable or unfoldable compression mechanism, and at least one compression unit detachably provided on the compression mechanism; The compression mechanism is provided above the front end of the wrist support. The compression mechanism includes a cross bar and a longitudinal bar. One end of the cross bar is rotatably connected to the wrist support to facilitate the rotation of the cross bar, and the other end of the cross bar is bolted to the wrist support to facilitate the fixation of the cross bar. The longitudinal bar is movably provided at the center of the cross bar to facilitate the rotation and sliding of the longitudinal bar; A composite connecting member is provided between the cross bar and the longitudinal bar, so that the longitudinal bar can rotate relative to at least one rotation axis and translate relative to at least one sliding direction, and a longitudinal groove is provided on the longitudinal bar; The compression unit is clamped on the longitudinal bar to facilitate the disassembly and assembly of the compression unit. The compression unit slides in the longitudinal groove, and the position of the longitudinal bar can be adjusted when the position of the compression unit is fixed. A compression plate with a sterile dressing is provided below the compression unit, and the compression plate elastically contacts the puncture site of the patient's skin downward to achieve the compression fixation or compression hemostasis of the arterial catheter.

[0008] Further, the wrist support is a semi-circular tube, which can limit the patient's forearm. The inner wall of the wrist support is in a "U" shape, and the front end of the wrist support is provided with a bearing protrusion bent upward in an arch, and the patient's wrist is placed on the bearing protrusion; the compression mechanism and the bearing protrusion are arranged at intervals up and down.

[0009] Further, the wrist supports at both ends of the bearing protrusion are respectively a forearm section and a palm section. Along the length direction of the wrist support, the palm section, the bearing protrusion and the forearm section are arranged in sequence, and the length of the forearm section is greater than the length of the palm section.

[0010] Further, both the cross bar and the longitudinal bar are long strip plates. The length of the cross bar is greater than that of the longitudinal bar, and the length of the cross bar is adapted to the width of the wrist support. A rotating bolt is provided at one end of the cross bar, and the cross bar is rotatably connected to the wrist support through the rotating bolt; A hand-tightening bolt is provided at the other end of the cross bar, and the cross bar is fixedly connected to the wrist support through the hand-tightening bolt. Folding holes and unfolding holes are provided on the wrist support, and the hand-tightening bolt is threadedly connected to the folding hole or the unfolding hole, which facilitates the fixation of the cross bar in the folded state and the unfolded state.

[0011] Further, with the rotating bolt as the center, the folding holes and the unfolding holes are arranged on the same circumference, and the central angle corresponding to the connection line between the folding holes and the unfolding holes is 90°; the folding holes and the rotating bolt are arranged on the same side of the wrist support, and the rotating bolt and the unfolding holes are arranged on both sides of the wrist support.

[0012] Furthermore, the composite connector includes a threaded rod and a hand-tightening nut, wherein the threaded rod is vertically arranged at the center of the crossbar, and the hand-tightening nut is arranged on the threaded rod, and the hand-tightening nut is convenient for controlling the locking and unlocking of the longitudinal rod; The longitudinal rod is bent into a "U" shape, the middle part of the longitudinal rod is the longitudinal groove, one end of the longitudinal groove extends out of the longitudinal rod, and the threaded rod vertically passes through the longitudinal groove and is connected to the hand-tightened nut, so that the longitudinal rod can rotate in a circle and slide in a translation relative to the cross rod.

[0013] Furthermore, the pressing unit penetrates into the longitudinal groove from one end of the longitudinal groove, and a plurality of pressing units are arranged in a straight line in the longitudinal groove, and the number of the pressing units is determined according to the number of punctures.

[0014] Furthermore, the pressing unit includes a sliding sleeve, a hand-tightening rod, a compression spring and the pressing plate. The sliding sleeve is a circular sleeve body with a "丄"-shaped cross-section. The sliding sleeve is clamped in the longitudinal groove. The hand-tightening rod is arranged in the sliding sleeve. The hand-tightening rod includes a hand-tightening section and a threaded section integrally formed in an upper and lower manner. The threaded section is threadedly connected to the sliding sleeve. The hand-tightening rod is connected downward to the pressing plate through a compression spring. The compression spring is placed in the sliding sleeve. The pressing plate is arranged below the sliding sleeve, and the pressing plate fits tightly against the patient's skin.

[0015] Furthermore, the front end of the wrist support is symmetrically provided with slots, which are I-shaped grooves with one end being wide and the other end being narrow. A restraint belt for restraining the patient's palm to turn it outward is clamped between the slots on both sides, so as to facilitate the patient's palm to maintain a certain posture.

[0016] Through the above technical solution, the beneficial effects of the present invention are: The present invention has a reasonable structural design. The wrist rest cooperates with the restraint belt to restrict the patient's forearm and keep the patient's palm everted with the palm facing upward, which is conducive to the puncture operation by medical staff. The pressing mechanism can be rotated and folded, which does not affect the patient's forearm being placed in the wrist rest, and the pressing mechanism itself does not take up additional space; the pressing mechanism can also be rotated and unfolded, so that it spans above the wrist rest. At this time, the pressing mechanism can cooperate with the pressing unit to perform auxiliary pressing and fixing or pressing and hemostasis operations.

[0017] The pressing mechanism of the present invention has a horizontal bar that can rotate, and is in a working state and a folded storage state before and after the rotation respectively; the vertical bar can also be rotated to switch between the working state and the storage state, and the vertical bar can not only rotate relative to the horizontal bar, but also slide in translation, so that at least one pressing unit can be installed on the vertical bar. More pressing units can be installed after the vertical bar is translated, so that multiple puncture sites can be pressed.

[0018] The pressing unit of the present invention realizes the downward pressing of the pressing plate by turning the hand-twisting rod, and under the transmission of the compression spring, uses the pressing plate with a sterile dressing to press the puncture site. Moreover, the pressing force can be adjusted to make up for the instability of the fixation of the existing ordinary transparent dressing. During the puncture operation of medical staff, if the puncture fails, a pressing unit is used to press the puncture site to stop bleeding and prevent swelling. Then, another puncture can be performed. If it fails again, another pressing unit can still be used to press again, saving the manual pressing time.

[0019] Through the translational sliding of the longitudinal rod and in cooperation with a certain number of pressing units, the present invention can achieve the purpose of pressing multiple puncture sites. In this way, when the puncture fails, it can assist medical staff in pressing to stop bleeding, facilitate the medical staff to change positions and perform the puncture operation again, save the puncture time, ensure the sterility of pressing, eliminate the need for manual preparation of compression materials, avoid manual pressing operations and reduce the manual pressing time. Brief Description of the Drawings

[0020] Figure 1 It is one of the axonometric views of the device for assisting in the fixation and pressing of an invasive artery according to the present invention, in which the pressing mechanism is in a folded state.

[0021] Figure 2 It is the second axonometric view of the device for assisting in the fixation and pressing of an invasive artery according to the present invention, in which the pressing mechanism is in an unfolded state.

[0022] Figure 3 It is the top view after the pressing unit of the device for assisting in the fixation and pressing of an invasive artery according to the present invention is installed.

[0023] Figure 4 It is the first cross-sectional view of the pressing unit of the device for assisting in the fixation and pressing of an invasive artery according to the present invention.

[0024] Figure 5 It is the second cross-sectional view of the pressing unit of the device for assisting in the fixation and pressing of an invasive artery according to the present invention.

[0025] Figure 6 It is the schematic diagram of the comparison before and after the use of the pressing unit of the device for assisting in the fixation and pressing of an invasive artery according to the present invention.

[0026] Figure 7 It is the schematic diagram of the separation of the restraint belt and the wrist support of the device for assisting in the fixation and pressing of an invasive artery according to the present invention.

[0027] Figure 8 It is the schematic diagram of the application state of the device for assisting in the fixation and pressing of an invasive artery according to the present invention.

[0028] The reference numerals in the drawings are: 1 wrist rest, 101 bearing protrusion, 102 forearm section, 103 palm section, 2 pressing mechanism, 21 cross bar, 22 longitudinal bar, 3 pressing unit, 4 rotating bolt, 5 hand-tightening bolt, 6 folding hole, 7 unfolding hole, 8 longitudinal groove, 9 composite connecting piece, 91 threaded rod, 92 hand-tightening nut, 10 sliding sleeve, 11 hand-tightening rod, 111 hand-tightening section, 112 threaded section, 12 compression spring, 13 pressing plate, 14 upper cylindrical block, 15 lower cylindrical block, 16 clamping groove, 17 restraint strap, 18 block protrusion. Detailed implementation manners

[0029] The following makes a detailed description of the specific implementation manners of the present invention with reference to the drawings: As Figures 1 to 8 shown, a device for assisting in the fixation and pressing of an invasive artery is used for pressing and fixing an arterial catheter at a puncture site during an operation or pressing to stop bleeding at a puncture site after the operation. The fixation and pressing device includes a wrist rest 1, a rotatable and foldable or unfoldable pressing mechanism 2, and at least one pressing unit 3 detachably arranged on the pressing mechanism 2, as Figures 1 to 2 shown.

[0030] The wrist rest 1 is used to support and fix the palm, wrist and forearm parts of a patient. The wrist rest 1 is in a semi-cylindrical tubular shape, and the inner wall of the wrist rest 1 is in a "U" shape, and the forearm of the patient can be directly placed flat in the wrist rest 1. In order to fit the wrist of the patient, the front end of the wrist rest 1 is provided with a bearing protrusion 101 bent upward in an arch shape, and the patient's wrist is placed on the bearing protrusion 101, and the patient's wrist part is lifted upward by the bearing protrusion 101.

[0031] In this embodiment, the wrist rest 1 at both ends of the bearing protrusion 101 are respectively a forearm section 102 and a palm section 103. Along the length direction of the wrist rest 1, the palm section 103, the bearing protrusion 101 and the forearm section 102 are arranged in sequence and integrally formed, and the length of the forearm section 102 is greater than the length of the palm section 103. After the forearm of the patient is placed flat on the wrist rest 1, most of the palm part extends out of the palm section 103, that is, most of the palm part of the patient is exposed outside the wrist rest 1.

[0032] A pressing mechanism 2 is arranged above the front end of the wrist rest 1, and the pressing mechanism 2 and the bearing protrusion 101 are arranged at intervals up and down. The pressing mechanism 2 can be manually rotated to be folded, so that the pressing mechanism 2 is in a non-working state; the pressing mechanism 2 can also be manually rotated to be unfolded, and then the pressing mechanism 2 is in a working state. Only in the working state can the pressing unit 3 be installed on the pressing mechanism 2.

[0033] As Figures 3 to 5As shown, the pressing mechanism 2 includes a cross bar 21 and a longitudinal bar 22. Both the cross bar 21 and the longitudinal bar 22 are long strip plates. The length of the cross bar 21 is greater than that of the longitudinal bar 22, and the longitudinal bar 22 is bent into a "U" shape. The length of the cross bar 21 is adapted to the width of the wrist rest 1. When the cross bar 21 is installed, one end of the cross bar 21 is rotatably connected to the wrist rest 1. Here, a rotating bolt 4 is provided at one end of the cross bar 21. The rotating bolt 4 can rotate relative to the cross bar 21 and is not threadedly connected to the cross bar 21. The cross bar 21 is rotatably connected to the wrist rest 1 through the rotating bolt 4, and the rotating bolt 4 is threadedly connected to the wrist rest 1.

[0034] On the premise of not tightening the rotating bolt 4, the cross bar 21 can rotate circumferentially in the horizontal direction. Furthermore, the other end of the cross bar 21 can rotate to the other side of the wrist rest 1. In this way, both ends of the cross bar 21 are located on both sides of the wrist rest 1, prompting the cross bar 21 to straddle the wrist rest 1. The two ends of the cross bar 21 can also rotate to the same side of the wrist rest 1, which does not affect the patient's forearm from being placed into the wrist rest 1.

[0035] On the basis that the cross bar 21 can rotate, the other end of the cross bar 21 is bolted to the wrist rest 1, so that the cross bar 21 can be fixed and kept fixed with the wrist rest 1. Specifically, a hand-tightening bolt 5 is provided at the other end of the cross bar 21. The cross bar 21 is fixedly connected to the wrist rest 1 through the hand-tightening bolt 5. The hand-tightening bolt 5 is rotatably connected to the cross bar 21 and has no threaded connection relationship, but the hand-tightening bolt 5 is threadedly connected to the wrist rest 1.

[0036] To facilitate the installation of the hand-tightening bolt 5, a folding hole 6 and an unfolding hole 7 are provided on the wrist rest 1. Both the folding hole 6 and the unfolding hole 7 are threaded holes. The folding hole 6 and the rotating bolt 4 are arranged on the same side of the wrist rest 1, and the rotating bolt 4 and the unfolding hole 7 are arranged on both sides of the wrist rest 1. With the rotating bolt 4 as the center of the circle, the folding hole 6 and the unfolding hole 7 are arranged on the same circumference, and the central angle corresponding to the line connection between the folding hole 6 and the unfolding hole 7 is 90°. The hand-tightening bolt 5 is threadedly connected to the folding hole 6 or the unfolding hole 7.

[0037] In the state where the rotating bolt 4 is loosened, rotate the cross bar 21 so that the hand-tightening bolt 5 corresponds to the folding hole 6, and then connect the hand-tightening bolt 5 to the folding hole 6. At this time, the cross bar 21 is in the folded state. After rotating the hand-tightening bolt 5 to disengage it from the folding hole 6, operate the cross bar 21 to rotate it 90°, and then the hand-tightening bolt 5 corresponds to the unfolding hole 7, and then connect the hand-tightening bolt 5 to the unfolding hole 7. At this time, the cross bar 21 straddles above the wrist rest 1 and the cross bar 21 is in the unfolded state.

[0038] A vertical rod 22 is centrally and movably arranged on the cross bar 21. The movable arrangement means that the vertical rod 22 can rotate circumferentially and translate relative to the cross bar 21. As a result, there is an angle between the vertical rod 22 and the cross bar 21, and the vertical rod 22 and the cross bar 21 are arranged in an upper and lower stacked manner. A vertical groove 8 is formed in the vertical rod 22, that is, the middle part of the vertical rod 22 is the vertical groove 8. The cross section of the vertical groove 8 is in a "convex" shape. One end of the vertical groove 8 extends out of the vertical rod 22. Thus, one end of the vertical rod 22 is an open end and the other end is a closed end.

[0039] When the vertical rod 22 is installed, a composite connecting member 9 is arranged between the cross bar 21 and the vertical rod 22. Through the composite connecting member 9, the vertical rod 22 can rotate relative to at least one rotation axis and translate relative to at least one sliding direction. In this embodiment, the composite connecting member 9 includes a threaded rod 91 and a hand-tightening nut 92. The threaded rod 91 is vertically arranged at the center of the cross bar 21, and the hand-tightening nut 92 is arranged on the threaded rod 91.

[0040] The threaded rod 91 vertically passes through the vertical groove 8 and then connects to the hand-tightening nut 92. By tightening the hand-tightening nut 92, the vertical rod 22 is fixed by pressing the hand-tightening nut 92 against the vertical rod 22. After loosening the hand-tightening nut 92, the vertical rod 22 can rotate and translate. The purpose of rotating the vertical rod 22 is to fold or unfold. In the folded state, the longitudinal directions of the vertical rod 22 and the cross bar 21 are the same, and the vertical rod 22 and the cross bar 21 are parallel to each other up and down. In the unfolded state, the vertical rod 22 rotates 90° to be perpendicular to the cross bar 21, and it is required that the open end of the vertical rod 22 faces the forearm section 102.

[0041] The folded state of the entire pressing mechanism 2 is that the vertical rod 22 and the cross bar 21 are arranged parallel to each other up and down. The cross bar 21 and the vertical rod 22 are both located on one side of the wrist rest 1, and neither the cross bar 21 nor the vertical rod 22 affects the patient's forearm from being placed into the wrist rest 1. The unfolded state of the entire pressing mechanism 2 is that the cross bar 21 spans above the wrist rest 1, and the vertical rod 22 rotates out and is perpendicular to the cross bar 21. Whether in the folded state or the unfolded state of the pressing mechanism 2, to ensure stability in the corresponding state, just tighten the rotating bolt 4 and the hand-tightening bolt 5. When the vertical rod 22 needs to be stable, the hand-tightening nut 92 can also be tightened.

[0042] The pressing unit 3 is not installed on the pressing mechanism 2 in the folded state. Only when the pressing mechanism 2 is manually operated to unfold, the pressing unit 3 is installed. The pressing unit 3 is clamped on the vertical rod 22, that is, the pressing unit 3 penetrates into the vertical groove 8 from one end of the vertical groove 8. Thus, the pressing unit 3 can penetrate into the vertical rod 22 from the open end of the vertical rod 22, realizing the installation of the pressing unit 3 on the vertical rod 22.

[0043] The number of pressing units 3 is determined according to the number of punctures, and a plurality of pressing units 3 are arranged in a straight line in the longitudinal groove 8, and the pressing units 3 can be placed and slid in the longitudinal groove 8. A pressing plate 13 is provided below the pressing unit 3, and the pressing plate 13 is used to elastically contact the puncture site of the patient's skin downward to fix the arterial catheter or to stop bleeding at the puncture site.

[0044] In this embodiment, the pressing unit 3 includes a sliding sleeve 10, a hand-tightening rod 11, a compression spring 12 and a pressing plate 13. The sliding sleeve 10 is a circular sleeve body with a "丄"-shaped cross section. The sliding sleeve 10 is clamped in the longitudinal groove 8. The sliding sleeve 10 can translate in the longitudinal groove 8, but cannot rotate in the longitudinal groove 8. Planes are symmetrically provided on both sides of the upper end of the sliding sleeve 10. In this way, the outer surface of the upper end of the sliding sleeve 10 is not a circumferential surface, and then the sliding sleeve 10 can be clamped in the longitudinal groove 8, thereby limiting the rotation of the sliding sleeve 10 in the longitudinal groove 8, and the longitudinal groove 8 also limits the upward movement of the sliding sleeve 10.

[0045] A hand-tightening rod 11 is arranged in the sliding sleeve 10, and the hand-tightening rod 11 includes a hand-tightening section 111 and a threaded section 112 integrally formed at the top and bottom. The threaded section 112 is threadedly connected to the sliding sleeve 10, and the hand-tightening section 111 is in the shape of a triangular prism; by twisting the hand-tightening section 111, the hand-tightening rod 11 can be moved up and down in the sliding sleeve 10.

[0046] The hand-tightening rod 11 is connected to the pressing plate 13 downward through the compression spring 12. The compression spring 12 is placed in the sliding sleeve 10, and the pressing plate 13 is a circular plate. The pressing plate 13 is arranged below the sliding sleeve 10, and the lower surface of the pressing plate 13 is provided with a sterile dressing. When the compression spring 12 is installed, an upper cylindrical block 14 is provided at the lower end of the hand-tightening rod 11, and a lower cylindrical block 15 is provided at the upper end of the pressing plate 13. The two ends of the compression spring 12 are sleeved on the upper cylindrical block 14 and the lower cylindrical block 15, and are interference-fitted with the upper cylindrical block 14 and the lower cylindrical block 15, and then the hand-tightening rod 11 and the pressing plate 13 are connected through the compression spring 12.

[0047] The entire pressing unit 3 has only the pressing plate 13 with its own sterile dressing as a consumable part, while the other compression springs 12, the hand-tightening rod 11 and the sliding sleeve 10 can be reused. Figure 6 As shown, in the initial state of the pressing unit 3, the hand-twisting rod 11 mostly extends out of the sliding sleeve 10, and the compression spring 12 mostly is inside the sliding sleeve 10, and the pressing plate 13 is close to the sliding sleeve 10. When the pressing unit 3 is used, the hand-twisting rod 11 is turned downward to compress the compression spring 12, and the compression spring 12 is gradually extended out of the sliding sleeve 10, and then the pressing plate 13 moves down to approach and fit the puncture site of the patient, and the pressing plate 13 is used to elastically press the puncture site, and the sterile dressing on the pressing plate 13 is in direct contact with the patient's skin surface.

[0048] The principle of the present invention is as follows: Before the medical staff performs arterial catheter puncture on the patient after anesthesia, the patient's forearm is first straightened and placed in the wrist rest 1. The patient's palm is located outside the wrist rest 1 and maintains a posture with the palm facing upward. At this time, the wrist joint is in a dorsiflexed state. To ensure that the patient's palm always remains in this state, clamping grooves 16 are symmetrically formed on both sides of the front end of the wrist rest 1. The clamping grooves 16 are flat grooves, and a restraint band 17 for binding the patient's palm to turn it outward is clamped between the two clamping grooves 16 on both sides, as shown in Figure 7 shown.

[0049] The restraint band 17 is a flat elastic band with a certain stretching elasticity. Both ends of the restraint band 17 are knotted to form a plurality of block protrusions 18. The restraint band 17 is wound around the patient's palm, and then both ends of the restraint band 17 are inserted into the clamping grooves 16. The block protrusions 18 are used in cooperation with the clamping grooves 16 to fix the restraint band 17. At this time, the restraint band 17 is in a tensioned state, which can fix the patient's palm and ensure the fixed state of the palm turning outward and the palm facing upward.

[0050] Next, rotate and unfold the pressing mechanism 2: First, the cross bar 21 is horizontally installed on the wrist rest 1, and the rotating bolt 4 and the hand-tightening bolt 5 are tightened to fix the cross bar 21. Then, loosen the hand-tightening nut 92 to make the longitudinal bar 22 in a movable state. At this time, the open end of the longitudinal bar 22 is close to the cross bar 21. Furthermore, the longitudinal bar 22 is located on one side of the palm section 103 and the longitudinal bar 22 does not block the patient's wrist, and then the medical staff performs the puncture.

[0051] If the arterial catheter is successfully inserted in one puncture, after tightening the hand-tightening nut 92 to fix the longitudinal bar 22, the medical staff selects a pressing unit 3 and snaps it onto the longitudinal bar 22 to ensure that the pressing unit 3 corresponds to the puncture site. Rotate the hand-tightening rod 11 to press the pressing plate 13 with the compression spring 12, and press the arterial catheter at the puncture position through the pressing plate 13 for fixation; at this time, the pressing unit 3 is located at the open end position of the longitudinal bar 22.

[0052] If the puncture is not successful in one attempt, after ensuring the fixation of the longitudinal bar 22, still select a pressing unit 3 and snap it onto the longitudinal bar 22, and operate the pressing unit 3 to press the puncture site to prevent bleeding. In short, whether the puncture is successful in one attempt or not, a pressing unit 3 must be snapped into the open end of the longitudinal bar 22 to press the arterial catheter at the puncture site for fixation, or to press the puncture site to achieve the function of pressing to stop bleeding, as shown in a of Figure 8 shown.

[0053] If the first puncture is not successful, on the basis of using a pressing unit 3 to press and stop bleeding, medical staff can change positions to perform a second puncture to save time. Whether the second puncture is successful or not, on the basis of ensuring that the position of the previous pressing unit 3 is fixed, the operating lever 22 is moved forward to the forearm section 102 and fixed, so that the open end of the lever 22 moves to the current puncture position. Another pressing unit 3 is inserted into the open end of the lever 22 to fix the arterial catheter after the second puncture or press and stop bleeding at the puncture site, as Figure 8 shown in b of

[0054] It can be seen from this that if the first puncture fails, a second puncture operation can be carried out on the basis of using a pressing unit 3 to press and stop bleeding at the first puncture site. After the second puncture operation, whether it is successful or not, without moving the first pressing unit 3, by moving the lever 22, a second pressing unit 3 can be installed at the open end of the lever 22 to press and fix or stop bleeding at the second puncture site.

[0055] Similarly, if the second puncture still fails, a third puncture can be carried out with reference to the above method, so that multiple puncture operations can be carried out conveniently. At the same time, the pressing unit 3 is used to apply a pressing force downward on the puncture site, replacing manual pressing and stopping bleeding, reducing the workload of medical staff and improving work efficiency.

[0056] It should be noted that: since the pressing unit 3 itself has an elastic height telescoping function, the pressing unit 3 can be adaptively adjusted for patients with different forearm thicknesses. If the patient's forearm is thicker, only a small adjustment of the hand-twisting rod 11 is needed to make the pressing plate 13 move down a small distance; if the patient's forearm is thinner, the hand-twisting rod 11 can be turned significantly to make the pressing plate 13 continue to move down until it tightly abuts against the patient's skin surface. In addition, a thin pad can be placed in the wrist rest 1 to raise the patient's forearm and actively adapt to the pressing unit 3.

[0057] The above embodiments are only preferred embodiments of the present invention and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the present invention patent shall be included in the scope of the present invention patent application.

Claims

1. A device for assisting invasive arterial fixation and compression, characterized in that: It comprises a wrist rest (1), a pressing mechanism (2) which can be rotated, folded or unfolded, and at least one pressing unit (3) which is detachably arranged on the pressing mechanism (2); The pressing mechanism (2) is arranged above the front end of the wrist support (1), and the pressing mechanism (2) comprises a cross bar (21) and a longitudinal bar (22), one end of the cross bar (21) is rotatably connected to the wrist support (1), and the other end of the cross bar (21) is bolted to the wrist support (1), and the longitudinal bar (22) is movably arranged at the center of the cross bar (21); A composite connecting member (9) is provided between the crossbar (21) and the longitudinal bar (22), so that the longitudinal bar (22) can rotate relatively around at least one rotation axis and translate relatively along at least one sliding direction, and a longitudinal groove (8) is provided on the longitudinal bar (22); The pressing unit (3) is clamped on the longitudinal rod (22), and the pressing unit (3) is placed in the longitudinal groove (8) for sliding. A pressing plate (13) with a sterile dressing is provided below the pressing unit (3), and the pressing plate (13) elastically contacts the puncture site of the patient's skin downwardly.

2. A device for assisting invasive arterial fixation and compression according to claim 1, characterized in that: The wrist support (1) is semi-circular in shape, the inner wall of the wrist support (1) is U-shaped, the front end of the wrist support (1) is provided with a supporting protrusion (101) that is arched and bent upwards, and the patient's wrist is placed on the supporting protrusion (101); the pressing mechanism (2) and the supporting protrusion (101) are arranged in an upper and lower spacing.

3. A device for assisting invasive arterial fixation and compression according to claim 2, characterized in that: The wrist support (1) at both ends of the bearing protrusion (101) comprises a forearm section (102) and a palm section (103), respectively. Along the length direction of the wrist support (1), the palm section (103), the bearing protrusion (101) and the forearm section (102) are arranged in sequence, and the length of the forearm section (102) is greater than that of the palm section (103).

4. The device for assisting invasive arterial fixation and compression according to claim 1, characterized in that: The cross bar (21) and the longitudinal bar (22) are both long strips of plate bodies. The cross bar (21) is longer than the longitudinal bar (22). The length of the cross bar (21) matches the width of the wrist support (1). A rotating bolt (4) is provided at one end of the cross bar (21). The cross bar (21) is rotatably connected to the wrist support (1) via the rotating bolt (4). A hand-tightening bolt (5) is provided at the other end of the cross bar (21), and the cross bar (21) is fixedly connected to the wrist support (1) via the hand-tightening bolt (5). The wrist support (1) is provided with a folding hole (6) and an unfolding hole (7), and the hand-tightening bolt (5) is threadedly connected to the folding hole (6) or the unfolding hole (7).

5. The device for assisting invasive arterial fixation and compression according to claim 4, characterized in that: With the rotating bolt (4) as the center of the circle, the folding hole (6) and the unfolding hole (7) are arranged on the same circumference, and the central angle corresponding to the line between the folding hole (6) and the unfolding hole (7) is 90°; the folding hole (6) and the rotating bolt (4) are arranged on the same side of the wrist support (1), and the rotating bolt (4) and the unfolding hole (7) are arranged on both sides of the wrist support (1).

6. The device for assisting invasive arterial fixation and compression according to claim 4, characterized in that: The composite connecting member (9) comprises a threaded rod (91) and a hand-tightened nut (92); the threaded rod (91) is vertically arranged at the center of the crossbar (21); and the hand-tightened nut (92) is arranged on the threaded rod (91); The longitudinal rod (22) is bent into a "U" shape. The middle part of the longitudinal rod (22) is the longitudinal groove (8). One end of the longitudinal groove (8) extends out of the longitudinal rod (22). The threaded rod (91) vertically passes through the longitudinal groove (8) and then connects to the hand-tightening nut (92), so that the longitudinal rod (22) can rotate circumferentially and slide translationally relative to the cross bar (21).

7. A device for assisting invasive arterial fixation and compression according to claim 6, characterized in that: The pressing unit (3) penetrates into the longitudinal groove (8) from one end of the longitudinal groove (8), and multiple pressing units (3) are arranged in a line in the longitudinal groove (8).

8. The device for assisting invasive arterial fixation and compression according to claim 1, characterized in that: The pressing unit (3) includes a sliding sleeve (10), a hand-tightening rod (11), a compression spring (12) and the pressing plate (13). The sliding sleeve (10) is a circular sleeve body with a cross-section in the shape of "丄". The sliding sleeve (10) is clamped in the longitudinal groove (8). The hand-tightening rod (11) is arranged in the sliding sleeve (10). The hand-tightening rod (11) includes a hand-tightening section (111) and a threaded section (112) which are integrally formed up and down. The threaded section (112) is threadedly connected to the sliding sleeve (10). The hand-tightening rod (11) is connected to the pressing plate (13) downward through the compression spring (12). The compression spring (12) is placed in the sliding sleeve (10), and the pressing plate (13) is arranged below the sliding sleeve (10).

9. The device for assisting invasive arterial fixation and compression according to claim 1, characterized in that: On both sides of the front end of the wrist rest (1), clamping grooves (16) are symmetrically formed. A restraint strap (17) for binding the patient's palm to turn it outward is clamped between the clamping grooves (16) on both sides.

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