Disposable compression hemostasis dressing with overpressure protection function

Abstract

The utility model discloses a disposable compression hemostasis dressing with an overpressure protection function, and relates to the field of medical hemostasis. In the prior art, a pressing knob needs to be rotated during use, so that the efficiency is low, emergency treatment is not facilitated, and meanwhile, devices such as a Hall sensor, a single-chip microcomputer and a counting display screen are used, so that the cost is too high. The disposable compression hemostasis dressing with the overpressure protection function comprises an installation sleeve, a pressing plate, a fixing device and dressing, the installation sleeve comprises a sliding cover and a sliding cylinder, the sliding cover is arranged in the sliding cylinder in a sleeved mode, a clamping ring is arranged on the outer wall of the sliding cover, check rings are arranged on the upper inner wall and the lower inner wall of the sliding cylinder, and the check rings prevent the clamping ring from continuing to move. That is, the sliding cover slides in the sliding cylinder within a certain range, overpressure protection is achieved by limiting movement of the sliding cover, compression hemostasis can be rapidly conducted, and meanwhile cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical hemostasis, specifically to a disposable compression hemostatic dressing with overpressure protection. Background Technology

[0002] Blood is an essential substance for maintaining life. It is a tissue that circulates within the heart and blood vessels. In adults, blood volume accounts for approximately 8% of body weight. Bleeding is one of the major complications after trauma. If blood loss exceeds 20% of total blood volume (approximately 800 ml), mild shock symptoms may appear: the injured person is thirsty, pale, sweats profusely, and has a rapid, weak pulse exceeding 100 beats per minute. If the blood loss is 20%-40% of total blood volume (800-1600 ml), moderate shock symptoms may appear: rapid breathing, restlessness, and a pulse exceeding 100 beats per minute. If the blood loss reaches 40% of total blood volume (1600 ml) or more, severe shock symptoms may appear: the injured person is apathetic, has a weak or undetectable pulse, and unmeasurable blood pressure, posing a life-threatening risk. Therefore, hemostasis is a crucial measure in rescuing bleeding victims and is of particular significance in saving their lives.

[0003] Compression hemostasis is the earliest hemostasis method developed by humans. It involves applying local pressure to physically stop further bleeding from the wound; that is, pressing firmly on the bleeding site to achieve hemostasis. Compression hemostasis is applicable to most bleeding situations and is a commonly used method in daily life, often achieving good hemostatic results. External pressure is higher than the tension within the blood vessel; after compression, the vessel can no longer bleed, making compression hemostasis a relatively effective method. Clinically, arterial punctures (such as radial artery puncture) are frequently required. Because arterial pressure is usually higher than venous pressure and there is less elastic tissue in the area, insufficient pressure after puncture may cause blood to seep into the subcutaneous tissue, leading to hematoma at the puncture site. On the other hand, excessive pressure or prolonged compression after arterial puncture increases the likelihood of ischemia or even occlusion of the affected limb, and may also lead to skin redness, blisters, limb necrosis, or even amputation.

[0004] A search revealed Chinese patent CN110327091A, which discloses a hemostatic compression device with overpressure protection. The device is fixed to the hemostatic area by a fixing strap, and hemostasis is achieved by a compression knob mounted on the base. The device can accurately count and display the number of rotations of the compression knob, making it easy to control the compression force based on the rotation of the compression knob. At the same time, it can lock and maintain the compression hemostatic force and adjust the compression force within a certain time range to achieve overpressure protection, avoiding related complications caused by compression time and force. It is suitable for compression hemostasis in interventional surgery and battlefield emergency treatment.

[0005] The existing technology has the following problems: pressing the knob to rotate wastes time and is inefficient, which is not conducive to emergency rescue; at the same time, the use of devices such as Hall sensors, microcontrollers, and counting displays leads to excessive costs. Summary of the Invention

[0006] To address the aforementioned problems, this utility model aims to provide a disposable compression hemostatic dressing with overpressure protection, which can quickly stop bleeding while ensuring moderate pressure, providing protection against excessive pressure, and reducing costs.

[0007] The main idea of ​​the technical solution adopted in this utility model is to install the blood absorption layer into the installation sleeve and achieve overpressure protection by limiting the movement of the sliding cover.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A disposable pressure hemostatic dressing with overpressure protection includes an installation sleeve, a pressure plate, and a blood-absorbing layer. The installation sleeve contains the blood-absorbing layer, and the pressure plate passes through the installation sleeve. The installation sleeve includes a sliding cover and a sliding cylinder, with the sliding cover fitted inside the sliding cylinder.

[0010] The upper and lower inner walls of the slide cylinder are respectively provided with retaining rings, and the outer wall of the slide cover is provided with retaining rings.

[0011] Furthermore, based on the above technical solution, the sliding cover is in the shape of a hollow cylinder, with a through hole on the end cap and a pointed top at the center of the sliding cover.

[0012] Furthermore, based on the above technical solutions, the pressure plate is either a curved plate or a straight plate.

[0013] Furthermore, the above technical solution also includes a fixing device, which is connected to the pressure plate.

[0014] Furthermore, based on the above technical solution, the fixing device includes a pull ring and a strap. The strap is connected to the pressure plate through the pull ring. One end of the strap is fixedly connected to the pull ring, and the other end is detachably connected to the pull ring.

[0015] Furthermore, based on the above technical solution, the fixing device includes medical tape and release paper. A pressure plate is provided on the medical tape, and the remaining portions at both ends of the medical tape are tearably connected to the release paper.

[0016] The beneficial effects of this utility model are:

[0017] 1. The sliding cover slides inside the slide cylinder, saving time wasted when rotating the pressure knob, improving work efficiency, and making it more convenient for emergency rescue;

[0018] 2. Retaining rings are installed on the upper and lower inner walls of the slide cylinder, and retaining rings are installed on the outer wall of the slide cover. The retaining rings prevent the retaining rings from continuing to move, that is, the slide cover slides within a certain range inside the slide cylinder, which prevents overpressure and reduces production costs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below.

[0020] Figure 1 This is a schematic diagram of the structure of a disposable compression hemostatic dressing with overpressure protection according to the present invention;

[0021] Figure 2 This is a diagram illustrating the usage state of a disposable compression hemostatic dressing with overpressure protection according to this utility model.

[0022] Figure 3 This is a cross-sectional view of the inside of the mounting sleeve;

[0023] Figure 4 This is a schematic diagram of the sliding cover.

[0024] Figure 5 This is a cross-sectional view of the sliding cover;

[0025] Figure 6 This is a schematic diagram of the slide tube structure;

[0026] Figure 7 This is a cross-sectional view of the slide cylinder;

[0027] Figure 8 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0028] Figure 9 This is a schematic diagram of the pressure plate and fixing device in Embodiment 2 of this utility model;

[0029] In the picture:

[0030] 1. Install the sleeve;

[0031] 2. Sliding cover; 201. Snap ring; 202. Through hole; 203. Pointed top;

[0032] 3. Slide cylinder; 301. Retaining ring;

[0033] 4. Pressure plate;

[0034] 5. Fixing devices; 501. Pull rings; 502. Straps; 503. Velcro; 504. Medical tape; 505. Release paper;

[0035] 6. Blood absorption layer. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0038] The inventors' experiments revealed that existing technologies require rotating and pressing a knob, resulting in low efficiency and being unsuitable for emergency rescue; at the same time, the use of devices such as Hall sensors, microcontrollers, and counting displays leads to excessively high costs.

[0039] Based on the above findings, this application proposes a disposable pressure hemostatic dressing with overpressure protection, which can quickly achieve pressure hemostasis while reducing costs. Example 1

[0040] See Figures 1-7 This application discloses a disposable compression hemostatic dressing with overpressure protection, comprising an installation sleeve 1, a pressure plate 4, a fixing device 5, and a blood absorption layer 6. The installation sleeve 1 contains the blood absorption layer 6, and the pressure plate 4 passes through the installation sleeve 1. The fixing device 5 is connected to both ends of the pressure plate 4. The installation sleeve 1 includes a sliding cover 2 and a sliding cylinder 3, with the sliding cover 2 fitted inside the sliding cylinder 3.

[0041] See Figures 4-5 The sliding cover 2 is a hollow cylindrical structure made of polypropylene. A retaining ring 201 is provided on the outer wall of the sliding cover 2, and a through hole 202 is provided on the end cap of the sliding cover 2. A pointed tip 203 is provided in the center of the sliding cover 2. The pointed tip 203 is inserted into the blood absorption layer 6 to fix the blood absorption layer 6.

[0042] See Figures 6-7 The slide cylinder 3 is a cylindrical tube made of polypropylene. Retaining rings 301 are installed on the upper and lower inner walls of the slide cylinder 3. These retaining rings 301 prevent the retaining ring 201 from continuing to move, thus limiting the sliding cover 2's movement within a certain range inside the slide cylinder 3. Overpressure protection is achieved by restricting the movement of the sliding cover 2. Pressure scale lines are provided on the side wall of the slide cylinder 3, allowing for monitoring and adjustment of the hemostatic pressure.

[0043] Specifically, the sliding range of the sliding cover 2 within the sliding cylinder 3 and the pressure scale lines on the side wall of the sliding cylinder 3 are determined by the material of the blood absorption layer 6. The elastic deformation of the blood absorption layer 6 is obtained through experiments, and the pressure required for different elastic deformations is calculated. The sliding range of the sliding cover 2 within the sliding cylinder 3 is determined based on the pressure magnitude, and corresponding pressure scale lines are set on the side wall of the sliding cylinder 3 according to the elastic deformation and pressure changes. When the blood absorption layer 6 is made of artificial fiber alginate, the sliding range of the sliding cover 2 within the sliding cylinder 3 is 0.4cm to 0.8cm.

[0044] The pressure plate 4 is a curved plate with identical semicircles rolled up at both ends and through slots for detachable installation of the pull ring 501. The pull ring 501 includes a cylindrical structure and a rectangular frame, which are rotatably connected to make the pull ring 501 more suitable for the human body. The pressure plate 4 and pull ring 501 are existing structures and will not be described in detail here. The pressure plate 4 passes through the through hole 202 and is connected to the fixing device 5.

[0045] The fixing device 5 includes a pull ring 501, a strap 502, and a Velcro 503. One end of the strap 502 is fixedly connected to the pull ring 501, and the other end is detachably connected to the pull ring 501 via the Velcro 503. The two pull rings 501 are respectively hung inside the rolled-up semicircle of the pressure plate 4. Then, the end of the strap 502 with the Velcro 503 is tightened. When tightened, the strap 502 transmits a downward force to the pressure plate 4. Simultaneously, the pressure plate 4 presses the sliding cover 2 as it slides within the sliding cylinder 3, pressing down on the blood absorption layer 6. The fixing device 5 enables quick donning by the patient and provides pressure.

[0046] One usage process of this embodiment is as follows:

[0047] Align the blood-absorbing layer 6 with the patient's bleeding site. Then, attach the pull ring 501, the fixed connection end of the bandage 502 and the pull ring 501, to the semicircle of the rolled-up pressure plate 4. The detachable connection end of the bandage 502 and the pull ring 501 is then attached to the other semicircle of the rolled-up pressure plate 4. Tighten and loosen the bandage 502 using the Velcro 503. When tightening, the bandage 502 transmits a downward force to the pressure plate 4. The pressure plate 4 presses the sliding cover 2 as it slides within the sliding cylinder 3, simultaneously pressing the blood-absorbing layer 6. Observe the pressure scale lines to ensure that the pressure on the wound is not excessive. Finally, secure the bandage 502 to the pull ring 501 using the Velcro 503, ensuring that the blood-absorbing layer 6 continuously applies pressure to the patient's wound to stop bleeding. When the tightening force is too great, the retaining ring 301 prevents the retaining ring 201 from continuing to move, meaning the sliding cover 2 will no longer slide within the sliding cylinder 3, achieving overpressure protection. At this point, the bandage 502 should not be tightened further. Example 2

[0048] The difference from Embodiment 1 above is the shape of the pressure plate 4 and the fixing device 5.

[0049] See Figures 8-9 The fixing device 5 includes medical tape 504 and release paper 505. The pressure plate 4 is a straight plate, adhered to the middle of the medical tape 504. The remaining portions at both ends of the medical tape 504 are tearably connected to the release paper 505. The fixing device 5 and the pressure plate 4 assembly pass through the through hole 202, and the pressure plate 4 is located in the through hole 202, providing downward pressure on the sliding cover 2.

[0050] One usage process of this embodiment is as follows:

[0051] Align the blood-absorbing layer 6 with the patient's bleeding site. First, tear open one end of the release paper 505 to allow the corresponding medical tape 504 to adhere to the patient's skin for fixation. Hold the fixed end of the medical tape 504, tear open the release paper 505 at the free end, and simultaneously pull down on the free end of the medical tape 504 to make the entire medical tape 504 taut and exert downward force. The medical tape 504 transmits the force to the sliding cover 2 through the pressure plate 4. As the sliding cover 2 slides within the sliding cylinder 3, it presses against the blood-absorbing layer 6. Observe the pressure scale line to ensure that the pressure on the wound is not excessive. Finally, fix the free end of the medical tape 504 to the patient's skin, so that the blood-absorbing layer 6 continuously applies pressure to the patient's wound to stop bleeding. When the tightening force is too great, the retaining ring 301 prevents the retaining ring 201 from continuing to move, that is, the sliding cover 2 will no longer slide within the sliding cylinder 3, achieving overpressure protection. At this time, the medical tape 504 should not be tightened further.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A disposable compression hemostatic dressing with overpressure protection, comprising an installation sleeve (1), a pressure plate (4), and a blood-absorbing layer (6), wherein the installation sleeve (1) contains the blood-absorbing layer (6), and the pressure plate (4) passes through the installation sleeve (1), characterized in that, The mounting sleeve (1) includes a sliding cover (2) and a sliding cylinder (3), with the sliding cover (2) fitted inside the sliding cylinder (3); Among them, the upper and lower inner walls of the slide cylinder (3) are respectively provided with retaining rings (301), and the outer wall of the slide cover (2) is provided with retaining rings (201).

2. The disposable pressure-controlled hemostatic dressing with overpressure protection according to claim 1, characterized in that: The sliding cover (2) is a hollow cylinder, and a through hole (202) is provided on the end cap of the sliding cover (2). A pointed top (203) is provided in the center of the sliding cover (2).

3. A disposable pressure-controlled hemostatic dressing with overpressure protection according to claim 1, characterized in that: The pressure plate (4) is a curved plate or a straight plate.

4. A disposable pressure-controlled hemostatic dressing with overpressure protection according to claim 1, characterized in that: It also includes a fixing device (5), which is connected to the pressure plate (4).

5. A disposable pressure-controlled hemostatic dressing with overpressure protection according to claim 4, characterized in that: The fixing device (5) includes a pull ring (501) and a strap (502). The strap (502) is connected to the pressure plate (4) through the pull ring (501). One end of the strap (502) is fixedly connected to the pull ring (501), and the other end is detachably connected to the pull ring (501).

6. A disposable pressure-controlled hemostatic dressing with overpressure protection according to claim 4, characterized in that: The fixing device (5) includes medical tape (504) and release paper (505). A pressure plate (4) is provided on the medical tape (504). The remaining parts at both ends of the medical tape (504) are tearably connected to the release paper (505).

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