Airbag pressurized infusion auxiliary device

Abstract

This invention belongs to the field of medical device technology and discloses a balloon-type pressurized infusion auxiliary device, including an adhesive layer, a dressing layer, a pressurizing component, and a display component. The dressing layer is disposed on the adhesive layer. The pressurizing component is disposed on the top surface of the dressing layer, and its bottom surface is a curved surface with a downward convex center. The display component includes a first liquid storage ring, a second liquid storage ring, two delivery tubes, and two sets of indicator cards. The second liquid storage ring is sleeved on the outer ring of the first liquid storage ring, and both are filled with colored liquid. One end of each of the two delivery tubes is connected to the first and second liquid storage rings, respectively, and the other end of each delivery tube extends to the two sets of indicator cards on the top surface of the pressurizing component. When the liquid storage rings are pressurized, liquid is discharged, and the liquid column in the delivery tube moves. By observing the color of the marking groove on the indicator card corresponding to the liquid column, the user can determine whether the current pressure is within the appropriate range. By comparing the colors of the marking grooves on the two sets of indicator cards where the liquid columns in the two delivery tubes are respectively located, the user can determine whether the pressure is evenly distributed.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a balloon-assisted infusion device. Background Technology

[0002] Intravenous infusion is one of the most basic and frequent medical procedures in clinical diagnosis and treatment. After puncture, effective pressure on the puncture site to stop bleeding is a key step in preventing subcutaneous hematoma, reducing patient pain, and ensuring medical safety. Currently, there are two main methods of hemostasis after intravenous puncture in clinical practice: one is for the patient or family to directly press the puncture site with a cotton swab, estimate the pressure time based on experience, and then remove it themselves; the other is for medical staff to fix a hemostatic cotton pad to the puncture site with tape, which the patient removes themselves after a period of time. The drawbacks of these methods are that they require continuous pressure from the patient or medical staff, which is inconvenient; and the pressure point is prone to displacement, leading to subcutaneous bruising or hematoma.

[0003] To improve hemostasis, some pneumatic hemostatic devices have emerged in clinical practice. These devices typically consist of a bandage and a compression cuff, achieving pressure by injecting air into the cuff. However, in actual use, these devices lack direct feedback on pressure levels. Operators can only indirectly estimate the pressure by the amount of air injected into the cuff. Factors such as the pre-tightness of the bandage and differences in the patient's limb thickness significantly affect the actual pressure, leading to large variations among operators and making precise control difficult. Insufficient local pressure can cause bleeding at the puncture site, while excessive pressure can cause pain and discomfort for the patient. Furthermore, some techniques use various sensors for detection, resulting in complex structures, high costs, and unsuitability for disposable consumables. Therefore, there is an urgent need for a simple infusion aid device that can reflect pressure levels to meet clinical needs, providing a direct indication of compression intensity and improving the effectiveness of pressure-based hemostasis. Summary of the Invention

[0004] The present invention aims to provide a balloon-pressurized infusion auxiliary device to solve the problems of invisible pressure and poor compression effect of current hemostatic devices.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A balloon-assisted infusion device includes an adhesive layer, a dressing layer, a pressurizing component, and a display component; the dressing layer is disposed on the adhesive layer, and its bottom surface contacts the patient's body surface through an opening in the adhesive layer;

[0007] The pressure-applying component is located on the top surface of the dressing layer. The bottom surface of the pressure-applying component is a curved surface that bulges downward from the center, which is used to contact the top surface of the dressing layer and apply adjustable pressure.

[0008] The display component includes a first liquid storage ring, a second liquid storage ring, two delivery pipes, and two sets of indicator cards. The second liquid storage ring is fitted around the first liquid storage ring, and both are elastic annular cavities filled with colored liquid. The first and second liquid storage rings are both located inside the dressing layer, and their top surfaces are flush with the top surface of the dressing layer for contact with the bottom surface of the pressurization component.

[0009] One end of each of the two delivery pipes is connected to the No. 1 and No. 2 liquid storage rings, respectively. The other end of each delivery pipe extends to the two sets of indicator cards on the top surface of the pressurization component. The ends of the two delivery pipes are equipped with air-permeable but liquid-permeable sealing components.

[0010] Furthermore, the dressing layer includes a fixation film and a contact layer disposed on the bottom surface of the fixation film. The fixation film is fixedly disposed on the top surface of the adhesive layer, and the contact layer passes through an opening in the adhesive layer and protrudes from the bottom surface of the adhesive layer for contact with the patient's body surface.

[0011] Furthermore, the pressurization assembly includes a soft rubber fixing sleeve, a pressurization airbag, and an inflation airbag, all disposed on the top surface of the dressing layer. The inflation airbag is made of a high-resilience material. Both the inflation airbag and the pressurization airbag have one-way valves at their inlet ends. The outlet end of the inflation airbag is connected to the inlet end of the pressurization airbag. The outlet end of the pressurization airbag is equipped with a sealing head. The pressurization airbag is located inside the soft rubber fixing sleeve, and its bottom surface is a curved surface that convexes downward from the center.

[0012] Furthermore, the liquid is medical-grade silicone oil with added colorant.

[0013] Furthermore, the indicator card is equipped with several identification slots, each with a different color.

[0014] Furthermore, the adhesive layer is made of medical breathable non-woven fabric coated with pressure-sensitive adhesive.

[0015] Furthermore, the sealing component is a hydrophobic microporous membrane.

[0016] The principles and beneficial effects of the technical solution are as follows:

[0017] This invention provides a pneumatic pressurized infusion aid device.

[0018] 1. The pressurizing component applies pressure to the puncture point and squeezes the two fluid reservoirs, causing them to deform under pressure and discharge the fluid inside into the delivery tube, forming a liquid column. With the help of the color-coded markings on the indicator card, the user can directly observe the position of the liquid column tip to determine whether the current pressure is within the appropriate range, without relying on experience, thus improving the hemostasis effect.

[0019] 2. The No. 1 and No. 2 liquid storage rings correspond to the central and outer areas of the pressurized airbag, respectively. With the downward convex curved surface at the center of the bottom of the pressurized airbag, the liquid discharge from the No. 1 and No. 2 liquid storage rings into their respective delivery pipes varies independently depending on the pressure. By comparing the liquid column positions of the two sets of indicator cards, it can be determined whether the pressure is evenly distributed.

[0020] 3. It has a simple structure and does not require electronic components such as batteries and sensors. It relies on mechanical structure and liquid physical properties to achieve pressure indication. It is suitable for single use and the cost is controllable. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a pneumatic pressurized infusion auxiliary device according to the present invention;

[0022] Figure 2 This is a schematic diagram of the assembly structure of a pneumatic pressurized infusion auxiliary device according to the present invention;

[0023] Figure 3 This is a schematic diagram of the dressing layer in a pneumatic infusion support device of the present invention;

[0024] Figure 4 This is a schematic diagram of the display component in a pneumatic infusion support device of the present invention;

[0025] Figure 5 This is a top view of a pneumatic infusion support device according to the present invention;

[0026] Figure 6 This is a cross-sectional view of a pneumatic infusion support device according to the present invention;

[0027] The corresponding labels in the attached diagram are named as follows: 1. Adhesive layer; 101. Opening; 2. Dressing layer; 201. Fixing film; 202. Contact layer; 3. Pressurization assembly; 301. Soft rubber fixing sleeve; 302. Pressurization airbag; 303. Inflatable airbag; 304. Air inlet check valve; 305. Sealing head; 4. Indicator card; 401. Delivery pipe; 402. No. 1 liquid storage ring; 403. No. 2 liquid storage ring; 404. Identification groove. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0029] like Figures 1-6As shown, a pneumatic infusion support device includes an adhesive layer 1, a dressing layer 2, a pressurizing component 3, and a display component. The entire device is sterilized with ethylene oxide and sealed in a sterile packaging bag. The adhesive layer 1 is made of medical breathable non-woven fabric coated with pressure-sensitive adhesive, which has good adhesion and is not likely to cause skin allergies in patients. An opening 101 is provided in the center of the adhesive layer 1. The adhesive layer 1 is used to fix the entire device to the patient's skin surface.

[0030] The dressing layer 2 is disposed on the adhesive layer 1. The dressing layer 2 includes a fixation film 201 and a contact layer 202 disposed on the bottom surface of the fixation film 201. The fixation film 201 is a non-woven fabric or polymer film, which is fixedly disposed on the top surface of the adhesive layer 1 to provide support for the contact layer 202. The contact layer 202 is made of medical absorbent cotton or hydrocolloid, which passes through the opening 101 on the adhesive layer 1 and protrudes from the bottom surface of the adhesive layer 1. It is used to directly contact the puncture point on the patient's body surface to absorb the exudate of blood or tissue fluid.

[0031] The pressure assembly 3 is disposed on the top surface of the dressing layer 2. The pressure assembly 3 includes a soft rubber fixing sleeve 301, a pressure airbag 302, and an inflatable airbag 303, all disposed on the top surface of the dressing layer 2. The soft rubber fixing sleeve 301 is shaped to fit the pressure airbag 302 and is made of medical-grade silicone, which is soft but has low extensibility. It is fixed to the top surface of the dressing layer 2. The pressure airbag 302 is placed inside the soft rubber fixing sleeve 301, which provides positioning and protection. The pressure airbag 302 is a flexible airbag made of TPU or PVC film, with its bottom surface being a curved surface convex downwards from the center. The inflatable airbag... The bladder 303 is an elastic, retractable, hand-squeezable bladder made of high-resilience rubber or silicone. Both the inflatable bladder 303 and the pressurized bladder 302 are equipped with one-way valves 304 at their inlet ends. The outlet end of the inflatable bladder 303 is connected to the inlet end of the pressurized bladder 302 to deliver gas into the pressurized bladder 302. Under the action of the one-way valves 304, gas is prevented from flowing back from the pressurized bladder 302 to the inflatable bladder 303. The outlet end of the pressurized bladder 302 is equipped with a manually openable sealing head 305 for depressurization, so as to adjust the pressure of the pressurized bladder 302.

[0032] The display component includes a first reservoir ring 402, a second reservoir ring 403, two delivery tubes 401, and two sets of indicator cards 4. The second reservoir ring 403 is fitted around the outer ring of the first reservoir ring 402, and both are elastic annular cavities made of medical-grade silicone rubber. The first reservoir ring 402 and the second reservoir ring 403 are both embedded in the fixation membrane 201 of the dressing layer 2, and their top surfaces are flush with the top surface of the fixation membrane 201, so that the curved bottom surface of the pressure airbag 302 can simultaneously contact the top surfaces of the dressing layer 2 and the two reservoir rings. The first reservoir ring 402 and the second reservoir ring 403 are both filled with colored liquid (black, blue, or red silicone oil).

[0033] The two delivery tubes 401 are medical-grade transparent plastic tubing, one end of which is connected to the inner cavity of the first liquid storage ring 402 and the second liquid storage ring 403 respectively. When the first liquid storage ring 402 and the second liquid storage ring (403) are squeezed, the colored liquid inside them enters into the respective connected delivery tubes 401 to form a liquid column. The other end of the two delivery tubes 401 extends to the two sets of indicator cards 4 on the top surface of the pressurizing component 3. By observing the position of the liquid column end in the delivery tube 401 corresponding to the position on the indicator card 4, the pressure status can be understood more intuitively and conveniently. The ends of the two delivery tubes 401 are equipped with air-permeable but liquid-permeable sealing components. The air-permeable but liquid-permeable sealing components can protect the ends of the delivery tubes 401 to prevent foreign objects from entering or liquid leakage, while not affecting gas exchange and facilitating the movement of the liquid column.

[0034] In this embodiment, the liquid is medical-grade silicone oil with added colorant. Medical-grade silicone oil has good biocompatibility, stable properties, and moderate viscosity, which can form a continuous and stable liquid column in the horizontal delivery tube 401, making it convenient for users to observe.

[0035] In this embodiment, the indicator card 4 is provided with a plurality of marking slots 404 along the extension direction of the conveying pipe 401, and the colors of each marking slot 404 are blue, green and red in sequence.

[0036] In this embodiment, the sealing element is a hydrophobic microporous membrane (such as PTFE or ePTFE, with a pore size of 0.2-5μm), which allows the gas in the delivery pipe 401 to be discharged as the liquid column advances, while preventing liquid leakage.

[0037] In use, first, remove the device from the sterile packaging bag, fix the adhesive layer 1 above the patient's puncture point, and align the contact layer 202 with the puncture point; the nurse or patient presses the inflation bag 303, the air inlet one-way valve 304 at the air inlet end of the inflation bag 303 closes, allowing gas to be discharged from the air outlet end of the inflation bag 303 and enter the air inlet end of the pressurization bag 302, the air inlet one-way valve 304 at the air inlet end of the pressurization bag 302 opens, and operating gas enters, thereby increasing the pressure. When the airbag 302 inflates and the airbag 303 is released, it rebounds due to its own elasticity. At this time, the one-way valve 304 at the air inlet end of the airbag 302 closes to prevent gas backflow, while the one-way valve 304 at the air inlet end of the airbag 303 opens to replenish the airbag 303 with outside air. This cycle continues. By repeatedly pressing the airbag 303, the airbag 302 can be continuously inflated, gradually expanding to provide different pressure levels.

[0038] Since the bottom surface of the pressurized airbag 302 is a curved surface that bulges downward from the center, its central area first contacts and squeezes the first liquid storage ring 402 in the central area of ​​the dressing layer 2.

[0039] When the pressure is low, the first liquid storage ring 402 is compressed, and the colored silicone oil inside it is discharged into the corresponding delivery pipe 401 (the delivery pipe 401 connected to the first liquid storage ring 402, hereinafter referred to as the first pipe), forming a liquid column in the first pipe. At this time, the end of the liquid column moves along the direction of the indicator card 4 (the indicator card 4 corresponding to the first pipe, hereinafter referred to as the first card) and is located in the blue marking groove 404 area corresponding to the first card. At this time, the second liquid storage ring 403 is not compressed or is slightly compressed, and the colored silicone oil inside it is not discharged into the corresponding delivery pipe 401 (the delivery pipe 401 connected to the second liquid storage ring 403, hereinafter referred to as the second pipe), so that there is no liquid column in the second pipe moving along the direction of the indicator card 4 (the indicator card 4 corresponding to the second pipe, hereinafter referred to as the second card). The absence of a corresponding liquid column in the second card indicates that the overall pressure is insufficient and further pressurization is required.

[0040] As the pressure increases, the first liquid storage ring 402 is further compressed, and the colored silicone oil inside it is further discharged, causing the liquid column in the first tube to gradually move towards the green marking groove 404 of the first card and to be in the starting section of the green marking groove 404. At the same time, the curved bottom surface of the pressurizing airbag 302 begins to contact the top surface of the second liquid storage ring 403, and the second liquid storage ring 403 is compressed, and the colored silicone oil inside it is discharged into the second tube, forming a liquid column in the second tube. The front end of the liquid column in the second tube moves along the direction of the second card and is in the blue marking groove 404 section corresponding to the second card. At this time, the liquid column in the first tube is in the green section of the first card (the center pressure is appropriate), and the liquid column in the second tube is in the blue section of the second card (the outer pressure is insufficient), indicating that the outer pressure is insufficient and it is necessary to continue pressurizing to make the pressure distribution uniform.

[0041] Continue pressurizing. The liquid column in tube 1 continues to move, reaching the middle or rear section of the green indicator 404 on card 1, without exceeding the green indicator 404. At the same time, the liquid column in tube 2 continues to move, reaching the front or middle section of the green indicator 404 on card 2. At this point, the liquid columns in the two tubes correspond to the green indicator 404 on cards 1 and 2 respectively (double green state), indicating that the airbag pressure is appropriate and the pressure distribution is uniform, resulting in the best hemostasis effect. Pressurization should be stopped.

[0042] If pressurization continues, the liquid column in tube 1 continues to move and is located in the red indicator slot 404 area of ​​card 1, while the liquid column in tube 2 continues to move and is located in the middle or rear section of the green indicator slot 404 of card 2, without exceeding the green indicator slot 404. This indicates that the pressure in the central area is too high, while the pressure in the outer area is still within a suitable range. At this time, the sealing head 305 should be opened to release pressure appropriately, allowing the liquid column in tube 1 to return to the green section of card 1. If the sealing head 305 is not opened to release pressure, and pressurization continues, the liquid column in tube 2 continues to move and is located in the red indicator slot 404 area of ​​card 2. At this time, the liquid columns of the two tubes correspond to the red indicator slots 404 of cards 1 and 2 respectively (double red state), indicating that the overall pressure is too high. The sealing head 305 should be opened immediately to release pressure fully.

[0043] With the No. 1 reservoir ring 402 and the No. 2 reservoir ring 403, along with two independent delivery tubes 401, the user can intuitively observe the pressure magnitude and pressure distribution without needing to know whether the value is appropriate. Simply observe the color, which is simpler and more intuitive, making it easier to adjust the pressure within the appropriate range, improving the safety of the device, and resulting in better hemostasis.

[0044] After hemostasis is completed, open the sealing head 305, depressurize the pressure bag 302, and the first liquid storage ring 402 and the second liquid storage ring 403 will return to their original shape by their own elasticity, drawing back the colored silicone oil in their respective delivery pipes 401. The liquid column will return to its initial position, and the device can then be removed.

[0045] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific technical solutions or characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A pneumatic infusion support device, characterized in that: It includes an adhesive layer (1), a dressing layer (2), a pressure assembly (3), and a display assembly; the dressing layer (2) is disposed on the adhesive layer (1), and its bottom surface contacts the patient's body surface through an opening (101) on the adhesive layer (1); The pressure-applying component (3) is disposed on the top surface of the dressing layer (2). The bottom surface of the pressure-applying component (3) is a curved surface that bulges downward from the center, which is used to contact the top surface of the dressing layer (2) and apply adjustable pressure. The display component includes a first liquid storage ring (402), a second liquid storage ring (403), two delivery pipes (401) and two sets of indicator cards (4). The second liquid storage ring (403) is sleeved on the outer ring of the first liquid storage ring (402), and both are elastic annular cavities filled with colored liquid. The first liquid storage ring (402) and the second liquid storage ring (403) are both located inside the dressing layer (2), and their top surfaces are flush with the top surface of the dressing layer (2) for contact with the bottom surface of the pressurizing component (3). One end of each of the two delivery pipes (401) is connected to the first liquid storage ring (402) and the second liquid storage ring (403) respectively. The other end of each of the two delivery pipes (401) extends to the two sets of indicator cards (4) on the top surface of the pressurization assembly (3). The ends of the two delivery pipes (401) are provided with air-permeable but liquid-permeable sealing components.

2. The pneumatic infusion support device according to claim 1, characterized in that: The dressing layer (2) includes a fixing film (201) and a contact layer (202) disposed on the bottom surface of the fixing film (201). The fixing film (201) is fixedly disposed on the top surface of the adhesive layer (1). The contact layer (202) passes through the opening (101) on the adhesive layer (1) and protrudes from the bottom surface of the adhesive layer (1) for contact with the patient's body surface.

3. The pneumatic infusion support device according to claim 1, characterized in that: The pressurizing component (3) includes a soft rubber fixing sleeve (301), a pressurizing airbag (302), and an inflatable airbag (303) disposed on the top surface of the dressing layer (2). The inflatable airbag (303) is made of high-resilience material. Both the inflatable airbag (303) and the pressurizing airbag (302) are provided with an inlet one-way valve (304). The outlet of the inflatable airbag (303) is connected to the inlet of the pressurizing airbag (302). The outlet of the pressurizing airbag (302) is provided with a sealing head (305). The pressurizing airbag (302) is located inside the soft rubber fixing sleeve (301), and its bottom surface is a curved surface with the center convex downward.

4. The pneumatic infusion support device according to claim 1, characterized in that: The liquid is medical-grade silicone oil with added colorant.

5. The pneumatic infusion support device according to claim 1, characterized in that: The indicator card (4) is provided with a plurality of marking slots (404), each marking slot (404) having a different color.

6. The pneumatic infusion support device according to claim 1, characterized in that: The adhesive layer (1) is made of medical breathable non-woven fabric coated with pressure-sensitive adhesive.

7. The pneumatic infusion support device according to claim 1, characterized in that: The sealing component is a hydrophobic microporous membrane.

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