A marine dedicated infusion hanger

Abstract

The application discloses a special infusion hanger for sea, belonging to the technical field of marine medical auxiliary equipment. The infusion hanger comprises a hanger body and a plurality of frame plates which are slidably installed, one side of each frame plate is provided with a normal-pressure clamping assembly and a dynamic force-increasing clamping assembly, and the clamping centers of the two are staggered in the vertical direction. The normal-pressure clamping assembly comprises an inner clamping jaw and an inflatable inner air bag, and preliminary positioning is realized through an adjusting screw; the dynamic force-increasing clamping assembly comprises a movable frame, a linkage mechanism and a lower clamping jaw provided with an air bag; when the infusion tube is pulled, the movable frame moves to drive the clamping arm to be automatically clamped through gear and rack transmission, and the greater the pulling force is, the tighter the clamping is. The application realizes double clamping protection and self-adaptive force-increasing of the infusion tube, effectively prevents the infusion tube from being pulled off to cause infusion interruption or needle sliding out, and guarantees the infusion safety and reliability in the shaking environment on the sea.

Description

Technical Field

[0001] This invention mainly relates to the technical field of marine medical auxiliary equipment, specifically a marine-specific infusion rack. Background Technology

[0002] When navigating at sea or operating on offshore platforms, the hull experiences continuous rolling and swaying due to wind and waves. Depending on the vessel's tonnage and sea state, the roll angle can reach 15-30°, the pitch angle 5-10°, and the sway frequency between 0.1-0.5Hz. This continuous, multi-dimensional rolling poses a significant challenge to medical rescue operations. Intravenous infusion is one of the most common treatments in maritime medical care; statistics show that over 70% of patients require intravenous infusion during maritime medical rescue operations.

[0003] However, in a swaying environment, the swinging of the IV bottle or bag is transmitted to the IV tubing through gravity, causing it to be repeatedly stretched. This stretching can lead to two serious consequences: first, the connection between the tubing and the IV bottle may loosen, causing medication leakage and contamination. Replacing the IV device at sea is not only difficult but may also delay treatment; second, the IV needle at the end of the tubing may slip out of the patient's vein, causing extravasation or interruption of the infusion, requiring re-puncture. Under swaying conditions, the success rate of re-puncture is significantly reduced, causing additional pain to the patient and potentially leading to medical disputes.

[0004] Existing infusion securing devices on ships primarily focus on securing the infusion bottle itself, using spring clips, elastic straps, or dedicated bottle holders to hold and secure it. For example, common designs include: installing elastic claws above the hanger to clamp the neck of the infusion bottle using spring force; or using an elastic net bag over the infusion bottle to secure it to the hanger. These methods address the issue of infusion bottle movement to some extent.

[0005] However, these solutions fail to address the fundamental problem of IV tubing being stretched. The reason is that even if the IV bottle is securely fixed, relative displacement between the patient's body and the bottle still occurs when the ship rocks. The patient lies on the bed, which moves with the ship's movement, while the IV bottle is fixed to the hanger; this relative movement inevitably stretches the IV tubing. Especially during violent rocking, the patient's body may slide laterally, frequently resulting in sudden tightening of the IV tubing. Furthermore, the IV tubing is made of a flexible material with thin walls that are easily deformed. Traditional mechanical clamping methods struggle to provide sufficient clamping force without flattening the tubing. If the clamping force is too weak, the tubing is easily pulled out; if the force is too strong, the tubing is flattened, preventing smooth infusion and potentially completely blocking the infusion. More importantly, the stretching force is dynamic, and conventional constant clamping forces cannot adaptively adjust to the magnitude of the stretching force.

[0006] Therefore, there is an urgent need for a special infusion bracket that can adapt to the swaying environment at sea, is specifically designed to fix infusion tubes, and has self-adaptive clamping capabilities. It can automatically increase the clamping force when the infusion tube is pulled, and the greater the pulling force, the tighter the clamping, while ensuring that the lumen is unobstructed under normal conditions. Summary of the Invention

[0007] The present invention addresses the problem that existing technical solutions are too simplistic and provides a solution that is significantly different from existing technologies. Specifically, the present invention mainly provides a marine-specific infusion rack to solve the technical problems mentioned in the background.

[0008] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: A marine-specific infusion rack includes a rack body on which multiple frame plates are slidably mounted. Each frame plate has an atmospheric pressure clamping component and a dynamic force-increasing clamping component on one side. The clamping center of the atmospheric pressure clamping component and the clamping center of the dynamic force-increasing clamping component are offset from each other in the vertical direction. The atmospheric pressure clamping assembly includes a clamping plate and a limiting block disposed inside the clamping plate. A circular groove is formed between the limiting block and the clamping plate. Inner claws are respectively provided on both sides inside the circular groove. An inner air bladder is provided on the inner arc wall of each inner claw. One of the inner claws is connected to an adjusting screw. The adjusting screw passes through the limiting block and is threadedly connected to the limiting block. The dynamic force-enhancing clamping assembly includes a movable frame, with a threaded sleeve slidably mounted at the center of the movable frame. Drive gears, rotatably mounted within the movable frame, are respectively provided on both sides of the threaded sleeve. A drive rack meshing with the drive gears is provided on the side wall of the threaded sleeve. A buffer pressure rod with a built-in spring is connected to the shaft of the drive gear. A clamping arm is connected to the other end of the buffer pressure rod. A telescopic rod is also connected between the clamping arm and the movable frame. A lower jaw is provided at the other end of the clamping arm, and a lower air bladder is provided on the inner arc wall of the lower jaw.

[0009] Preferably, each of the frame plates is fixed to the bracket body by bolts.

[0010] Preferably, another inner gripper is fixedly mounted on the clamping plate, and each inner gripper has a positioning protrusion at the center of its inner arc wall.

[0011] Preferably, each of the drive gears also engages with a movable rack, which is slidably mounted inside the movable frame and is connected to a locking rack via a connecting rod.

[0012] Preferably, the dynamic force-increasing clamping assembly further includes slide rails disposed on both sides of the movable frame. The slide rails are mounted on the lower end of the clamping plate and the frame plate via brackets. A movable block slides inside the slide rail. An elastic telescopic rod is connected between the movable block and the inner side wall of the slide rail. The movable block is rotatably connected to a transmission rod. The other end of the transmission rod is rotatably mounted on the side wall of the movable frame.

[0013] Preferably, one of the slide rails has an internal active rack, which meshes with a gear ring. The gear ring is sleeved on a transmission rod, and the other end of the transmission rod is connected to a universal joint coupling. A lower screw is threadedly connected inside the threaded sleeve. The universal joint coupling and the lower screw are connected by two meshing bevel gears, and the two bevel gears are mounted inside the movable frame by a bracket.

[0014] Preferably, the telescopic joint rod is a multi-stage guide telescopic rod used to maintain the linear movement of the clamping arm.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) This invention achieves dual clamping protection and adaptive force enhancement for the infusion tubing by setting up an atmospheric pressure clamping component and a dynamic force-enhancing clamping component, with their clamping centers offset from each other in the vertical direction. Under normal conditions, the atmospheric pressure clamping component provides basic clamping force through the expansion of the air bladder to prevent the infusion tubing from shifting due to slight swaying of the ship; the dynamic force-enhancing clamping component is automatically triggered when the infusion tubing is suddenly pulled, and converts the pulling displacement into the clamping action of the clamping arm through a purely mechanical linkage mechanism. The greater the pulling force, the tighter the clamping, effectively preventing the infusion tubing from coming off the infusion bottle connection or the infusion needle from slipping out of the patient's blood vessel. This dual protection mechanism ensures the unobstructed lumen during normal infusion and automatically enhances fixation in emergency situations, significantly improving the safety of infusion at sea.

[0016] (2) This invention solves the contradiction between lumen protection and adaptive adjustment in infusion tube clamping through the innovative design of the airbag clamping structure and the mechanical linkage force-enhancing mechanism. The inner and lower airbags are made of flexible medical-grade silicone material. After inflation, they can closely fit the outer wall of infusion tubes of different diameters, providing uniform circumferential pressure, which ensures clamping force without flattening the lumen and affecting the flow of medication.

[0017] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the clamping assembly of the present invention; Figure 4 For the present invention Figure 3 Enlarged view at point B in the middle; Figure 5 This is a top view of the interior of the frame plate of the present invention; Figure 6 This is a schematic diagram of the interior of the guide rail of the present invention.

[0019] Figure Descriptions: 10. Hanger body; 20. Frame plate; 30. Atmospheric pressure clamping assembly; 301. Clamping plate; 302. Restriction block; 303. Circular groove; 304. Inner gripper; 305. Inner airbag; 306. Adjusting screw; 309. Positioning protrusion; 40. Dynamic force-increasing clamping assembly; 401. Movable frame; 402. Screw sleeve; 403. Drive gear; 404. Drive rack; 405. Buffer pressure rod; 406. Clamping arm; 407. Lower gripper; 408. Lower airbag; 409. Moving rack; 410. Locking rack; 411. Slide rail; 412. Moving block; 413. Elastic telescopic rod; 414. Transmission rod; 415. Drive rack; 416. Gear ring; 417. Universal joint coupling; 418. Lower screw. Detailed Implementation

[0020] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the present invention. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. Rather, these embodiments are provided to make the disclosure of the present invention more thorough and complete.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to 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 in this document are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] Example 1, please refer to the appendix for details. Figure 1 As shown The hanger body 10 can be made of stainless steel or aluminum alloy, possessing corrosion-resistant properties and suitable for marine environments. Multiple frame plates 20 are slidably mounted on the hanger body 10. The frame plates 20 can move within the sliding grooves of the hanger body 10 and are fixed in the desired position by bolts. Each frame plate 20 has an atmospheric pressure clamping assembly 30 and a dynamic force-increasing clamping assembly 40 on one side, together forming a clamping unit for clamping an infusion tube. The clamping centers of the atmospheric pressure clamping assembly 30 and the dynamic force-increasing clamping assembly 40 are vertically offset, meaning the infusion tube is inclined when passing through them, thus triggering the linkage mechanism of the dynamic force-increasing clamping assembly 40 when the infusion tube is pulled. In application, the infusion bottle is suspended from the hook above the hanger body 10, and the infusion tube passes sequentially from top to bottom through the atmospheric pressure clamping assembly 30 and the dynamic force-increasing clamping assembly 40 before being connected to the patient.

[0024] Example 2, please refer to the appendix for details. Figure 2 , 3 As shown The atmospheric pressure clamping assembly 30 includes a clamping plate 301, inside which a limiting block 302 is disposed. A circular groove 303 is formed between the limiting block 302 and the clamping plate 301 for inserting the infusion tube. Inner clamping claws 304 are respectively provided on both sides of the circular groove 303. One inner clamping claw 304 is connected to an adjusting screw 306, which passes through the limiting block 302 and is threadedly connected to it; the other inner clamping claw 304 is fixedly mounted on the clamping plate 301. An inner air bladder 305 is provided on the inner arc wall of each inner clamping claw 304. The inner air bladder 305 is made of flexible medical-grade silicone material and can be inflated. In addition, a positioning protrusion 309 is installed at the center of the inner arc wall of each inner clamping claw 304 for initial positioning of the infusion tube.

[0025] After placing the infusion tubing into the circular groove 303, rotate the adjusting screw 306 to move the movable inner clamp 304 towards the fixed inner clamp 304 until the two positioning protrusions 309 gently contact the surface of the infusion tubing, achieving initial positioning (at this point, the infusion tubing can still be slightly pulled, but will not slip off on its own). At this stage, the inner air bladder 305 has not yet inflated and is not tightly fitted to the infusion tubing. Subsequently, the inner air bladder 305 is inflated through subsequent operations, causing it to expand and tightly fit against the outer wall of the infusion tubing. Because the air bladder material is soft and deformable, it can adapt to infusion tubing of different diameters while providing uniform circumferential pressure, ensuring clamping force without flattening the tubing and affecting drug flow. The positioning protrusions 309 ensure that the infusion tubing is centered in the circular groove, preventing uneven clamping due to skewing.

[0026] Example 3, please refer to the appendix for details. Figure 2-6 As shown The dynamic force-enhancing clamping assembly 40 includes a movable frame 401. A threaded sleeve 402 is slidably mounted at the center of the movable frame 401. Drive gears 403, rotatably mounted within the movable frame 401, are located on both sides of the threaded sleeve 402. A drive rack 404, meshing with the drive gears 403, is located on the side wall of the threaded sleeve 402. A buffer pressure rod 405 with a built-in spring is connected to the shaft of the drive gear 403. A clamping arm 406 is connected to the other end of the buffer pressure rod 405. A telescopic rod, a multi-stage guide telescopic rod, is also connected between the clamping arm 406 and the movable frame 401 to maintain the linear movement of the clamping arm 406. A lower gripper 407 is located at the other end of the clamping arm 406, and a lower airbag 408 is located on the inner arc wall of the lower gripper 407.

[0027] In the initial state, the spring inside the buffer pressure lever 405 keeps the clamping arm 406 in the open position, and the lower jaw 407 does not clamp the infusion tube, allowing the tube to pass freely. When the infusion tube is subjected to a downward or lateral pulling force (such as the relative displacement between the patient and the infusion bottle caused by the swaying of a ship), the infusion tube will drive the movable frame 401 to move (since the atmospheric pressure clamping assembly 30 is already clamped, the infusion tube is fixed above the atmospheric pressure clamping assembly 30, so the pulling force will act on the dynamic force-increasing clamping assembly 40). The movement of the movable frame 401 is transmitted through the screw sleeve 402, drive rack 404, drive gear 403, etc., causing the clamping arm 406 to move towards the center, and the lower jaw 407 to clamp the infusion tube. At the same time, the lower air bladder 408 inflates, further conforming to the infusion tube. The multi-stage guide design of the telescopic joint rod ensures that the clamping arm 406 always maintains linear movement during the clamping process, avoiding uneven clamping force caused by skewing.

[0028] Example 4, please refer to the appendix for details. Figure 2-6 As shown Each drive gear 403 also engages with a movable rack 409, which is slidably mounted inside the movable frame 401 and is connected to a locking rack 410 via a connecting rod. When the clamping arm 406 clamps, the locking rack 410 engages with a pawl mechanism provided on the movable frame 401 to achieve self-locking and prevent the clamping arm 406 from loosening during continuous pulling.

[0029] When the drive gear 403 rotates and drives the clamping arm 406 to clamp, the drive gear 403 simultaneously drives the moving rack 409, which meshes with it, to move. The moving rack 409, through a connecting rod, drives the locking rack 410 to extend and engage with the pawl on the movable frame 401. When the pulling force persists and the movable frame 401 tends to return to its original position, the engagement of the locking rack 410 with the pawl prevents the drive gear 403 from rotating in the opposite direction, thus maintaining the clamping force. When the pulling force disappears, the pawl needs to be released manually or through an unlocking mechanism (such as a lever) to disengage the locking rack 410, allowing the elastic telescopic rod 413 to pull the movable frame 401 back to its original position. This self-locking design ensures that the dynamic force-increasing clamping assembly 40 can maintain a clamped state under continuous shaking or prolonged pulling, avoiding the attenuation of clamping force caused by repeated loosening.

[0030] Example 5, please refer to the appendix for details. Figure 2-6 As shown Slide rails 411 are provided on both sides of the movable frame 401. The slide rails 411 are fixedly installed on the lower ends of the clamping plate 301 and the frame plate 20 by brackets. A moving block 412 is slidably installed inside the slide rail 411. An elastic telescopic rod 413 (such as a spring rod) is connected between the moving block 412 and the inner side wall of the slide rail 411 to provide a restoring force. A transmission rod 414 is rotatably connected to the moving block 412. The other end of the transmission rod 414 is rotatably installed on the side wall of the movable frame 401. One of the slide rails 411 has a drive rack 415 inside, which meshes with a gear ring 416 sleeved on the transmission rod 414. The other end of the transmission rod 414 is connected to a universal joint coupling 417. The universal joint coupling 417 is connected to the lower screw 418 through two meshing bevel gears. The lower screw 418 is threaded inside the threaded sleeve 402.

[0031] When the infusion tubing is subjected to a pulling force, it pushes the movable frame 401 downwards or to one side (the direction of movement depends on the pulling direction). Since the movable frame 401 is connected to the moving block 412 via the transmission rod 414, the movement of the movable frame 401 causes the moving block 412 to slide within the slide rail 411. Simultaneously, because the driving rack 415 is fixed inside the slide rail 411 (relatively fixed to the slide rail 411), and the gear ring 416 moves with the transmission rod 414, during the movement, the driving rack 415 drives the gear ring 416 to rotate, thereby causing the transmission rod 414 to rotate. The rotation of the transmission rod 414 is transmitted to the lower screw 418 through the universal joint coupling 417 and the bevel gear, causing the lower screw 418 to rotate. The rotation of the lower screw 418 drives the movement of the threaded sleeve 402 (because the threaded sleeve 402 is threadedly connected to the lower screw 418 and is slidably installed within the movable frame 401, it cannot rotate). When the threaded sleeve 402 moves, it drives the drive gear 403 to rotate via the drive rack 404, thereby driving the clamping arm 406 to clamp the infusion tube. The function of the elastic telescopic rod 413 is to pull the movable frame 401 back to its original position after the pulling force disappears, so that the clamping arm 406 is released and returns to its initial state.

[0032] The greater the tensile force on the infusion tubing, the greater the displacement of the movable frame 401, the greater the rotation angle of the transmission rod 414, the longer the moving distance of the screw sleeve 402, and ultimately the greater the clamping force of the clamping arm 406. This achieves adaptive adjustment where the clamping force is proportional to the tensile force. Simultaneously, because the clamping centers of the atmospheric pressure clamping assembly 30 and the dynamic force-amplifying clamping assembly 40 are vertically offset, the infusion tubing is tilted between the two clamping points. This allows the tensile force to be more effectively decomposed into a driving force that triggers clamping when the infusion tubing is stretched.

[0033] Example 6, please refer to the appendix for details. Figure 2 , 5 As shown In application, the inner airbag 305 and the lower airbag 408 require a unified air pressure supply. For this purpose, an integrated air control box (not shown in the figure) can be installed on the hanger body 10, connected to each clamping unit via air supply pipes. The air control box contains a miniature air pump or a manually squeezed airbag, connected to each inner airbag 305 and lower airbag 408 via air supply pipes. Pressure regulating valves and pressure gauges can be installed on the air supply pipes to adjust the pressure according to the material and specifications of the infusion tubing. The air control box can be fixed to the side or bottom of the hanger body 10 for easy operation.

[0034] When the airbag needs to be inflated, the air pump is started or the airbag is manually squeezed. Air pressure enters the inner airbag 305 and the lower airbag 408 through the air supply tube, causing them to inflate. The degree of airbag inflation can be controlled by adjusting the pressure valve, thereby adjusting the initial clamping force. Generally, the pressure is adjusted until the airbag just fits against the infusion tube but does not significantly compress the tube lumen; at this point, the infusion tube can be pulled smoothly but with some resistance. This centralized pressure supply method ensures uniform pressure across multiple clamping units, resulting in a consistent clamping force, while also facilitating operation and maintenance.

[0035] As an extended design feature, the air control box can integrate an automatic pressure maintenance function, automatically replenishing air when a pressure drop is detected to ensure stable clamping force during long-term use. In marine salt spray environments, the air control box should employ a sealed design, and the internal electronic components should be protected against three-dimensional weathering.

[0036] The present invention has been described by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A marine-specific infusion rack, comprising a rack body (10), characterized in that: Multiple frame plates (20) are slidably mounted on the hanger body (10). Each frame plate (20) is provided with a normal pressure clamping component (30) and a dynamic force-increasing clamping component (40) on one side. The clamping center of the normal pressure clamping component (30) and the clamping center of the dynamic force-increasing clamping component (40) are offset from each other in the vertical direction. The atmospheric pressure clamping assembly (30) includes a clamping plate (301) and a limiting block (302) disposed inside the clamping plate (301). A circular groove (303) is formed between the limiting block (302) and the clamping plate (301). Inner claws (304) are respectively provided on both sides inside the circular groove (303). An inner air bladder (305) is provided on the inner arc wall of each inner claw (304). One of the inner claws (304) is connected to an adjusting screw (306). The adjusting screw (306) passes through the limiting block (302) and is threadedly connected to the limiting block (302). The dynamic force-enhancing clamping assembly (40) includes a movable frame (401), a threaded sleeve (402) is slidably installed in the center of the movable frame (401), and drive gears (403) are rotatably installed in the movable frame (401) on both sides of the threaded sleeve (402). A drive rack (404) that meshes with the drive gear (403) is provided on the side wall of the threaded sleeve (402). A buffer pressure rod (405) with a built-in spring is connected to the shaft of the drive gear (403). A clamping arm (406) is connected to the other end of the buffer pressure rod (405). A telescopic rod is also connected between the clamping arm (406) and the movable frame (401). A lower jaw (407) is provided at the other end of the clamping arm (406). A lower airbag (408) is provided on the inner arc wall of the lower jaw (407).

2. The marine-specific infusion rack according to claim 1, characterized in that: Each of the frame plates (20) is fixed to the bracket body (10) by bolt locking.

3. The marine-specific infusion rack according to claim 1, characterized in that: Another inner gripper (304) is fixedly mounted on the clamping plate (301), and each inner gripper (304) has a positioning protrusion (309) at the center of its inner arc wall.

4. The marine-specific infusion rack according to claim 1, characterized in that: Each of the drive gears (403) also engages with a movable rack (409), which is slidably mounted inside the movable frame (401) and is connected to a locking rack (410) via a connecting rod.

5. A marine-specific infusion rack according to claim 1, characterized in that: The dynamic force-increasing clamping assembly (40) also includes slide rails (411) arranged on both sides of the movable frame (401). The slide rails (411) are mounted on the clamping plate (301) and the lower end of the frame plate (20) by brackets. A moving block (412) slides inside the slide rail (411). An elastic telescopic rod (413) is connected between the moving block (412) and the inner side wall of the slide rail (411). The moving block (412) is rotatably connected to a transmission rod (414). The other end of the transmission rod (414) is rotatably mounted on the side wall of the movable frame (401).

6. A marine-specific infusion rack according to claim 5, characterized in that: One of the slide rails (411) has an internal drive rack (415) that meshes with a gear ring (416). The gear ring (416) is sleeved on a transmission rod (414). The other end of the transmission rod (414) is connected to a universal joint coupling (417). The screw sleeve (402) is internally threaded with a lower screw (418). The universal joint coupling (417) and the lower screw (418) are connected by two meshing bevel gears, and the two bevel gears are mounted inside the movable frame (401) by a bracket.

7. A marine-specific infusion rack according to claim 1, characterized in that: The telescopic joint rod is a multi-stage guide telescopic rod used to maintain the linear movement of the clamping arm (406).

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