Cryogenic shrinkage hemostatic gel patch for arterial puncture sites

Abstract

The utility model discloses a low temperature contractive hemostatic gel paste for arterial puncture port, including flexible support film, pre -stretching elastomer, composite function layer and release paper, flexible support film pastes fixed in the top surface of pre -stretching elastomer, to make pre -stretching elastomer maintain the state of pre -stretching, when flexible support film is torn from pre -stretching elastomer, pre -stretching elastomer produces centripetal contraction, composite function layer sets up in the bottom surface of pre -stretching elastomer, and composite function layer includes cold compress gel and medical pressure sensitive adhesive, and cold compress gel is at the central region of pre -stretching elastomer bottom surface, and medical pressure sensitive adhesive is at the peripheral region of pre -stretching elastomer bottom surface, and release paper covers the bottom surface of composite function layer to protect cold compress gel and medical pressure sensitive adhesive. The low temperature contractive hemostatic gel paste can make skin cooling to play the cold compress effect, and then alleviate bleeding, pain and swelling, and have the function of making the skin around puncture port contract to puncture port, to reach the purpose of accelerating hemostatic speed.

Description

Technical Field

[0001] This utility model relates to the field of gel patch technology, and in particular to a low-temperature shrinkage hemostatic gel patch for arterial puncture sites. Background Technology

[0002] Following an interventional procedure via the femoral artery, manual or mechanical compression of the puncture site is typically required for 8-12 hours to achieve hemostasis. During this period, the patient needs to remain in bed with their legs extended for 8-12 hours, placing a significant burden on both medical staff and the patient. Currently, medical cooling gel patches can be applied to the puncture site to lower the temperature. While this helps to constrict blood vessels to reduce bleeding and relieve pain and swelling to some extent, it has almost no effect on causing the skin to contract towards the puncture site. Therefore, it has little impact on accelerating hemostasis at the arterial puncture site. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a low-temperature shrinkage hemostatic gel patch for arterial puncture sites, which can cool the skin and play a cold compress role, thereby relieving bleeding, pain and swelling, and has the function of shrinking the skin around the puncture site towards the puncture site, so as to accelerate the hemostasis speed.

[0004] The objective of this utility model is achieved through the following technical solution: A low-temperature contractile hemostatic gel patch for arterial puncture sites includes a flexible support film, a pre-stretched elastomer, a composite functional layer, and a release paper. The flexible support film is adhered and fixed to the top surface of the pre-stretched elastomer to maintain the pre-stretched elastomer in a pre-stretched state. When the flexible support film is peeled off from the pre-stretched elastomer, the pre-stretched elastomer undergoes centripetal contraction. The composite functional layer is disposed on the bottom surface of the pre-stretched elastomer and includes a cooling gel and a medical pressure-sensitive adhesive. The cooling gel is located in the central region of the bottom surface of the pre-stretched elastomer, and the medical pressure-sensitive adhesive is located in the peripheral region of the bottom surface of the pre-stretched elastomer. The release paper covers the bottom surface of the composite functional layer to protect the cooling gel and the medical pressure-sensitive adhesive.

[0005] Furthermore, the flexible support membrane and the pre-stretched elastomer are bonded together by a biodegradable adhesive layer, which is made of water-soluble polyvinyl alcohol or UV-degradable acrylate.

[0006] Furthermore, the flexible support membrane is made of polyethylene terephthalate (PET), polypropylene (PP), or polyethylene (PE).

[0007] Furthermore, the pre-stretched elastomer is a pre-stretched elastic fiber web made of polyurethane or silicone rubber, and the pre-stretched elastic fiber web has a radial woven structure.

[0008] Furthermore, the cooling gel is a hydrogel or a phase change gel.

[0009] Furthermore, the hydrogel comprises a hydrogel matrix and chitosan dispersed in the hydrogel matrix.

[0010] Furthermore, the phase change gel includes a phase change gel matrix and chitosan dispersed in the phase change gel matrix.

[0011] Furthermore, the medical pressure-sensitive adhesive surrounds the cooling gel, and a space is formed between the medical pressure-sensitive adhesive and the cooling gel.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: The low-temperature shrinkage hemostatic gel patch for arterial puncture sites provided by this utility model can be applied to the skin after peeling off the release paper. The position of the cold compress gel needs to correspond to the position of the puncture site, and the position of the medical pressure-sensitive adhesive needs to correspond to the skin around the puncture site. After the patch is applied, the flexible support film is peeled off from the pre-stretched elastomer, and then the pre-stretched elastomer will undergo centripetal contraction (i.e., contraction towards the center of the pre-stretched elastomer). As can be seen from the above, the low-temperature shrinkage hemostatic gel patch of this utility model can cool the skin through the cold compress gel, thereby relieving bleeding, pain and swelling. Furthermore, after the flexible support membrane is torn off, it can cause the skin around the puncture site to shrink towards the puncture site, thereby accelerating the hemostasis. Attached Figure Description

[0013] Figure 1 This is a layered structure diagram of the low-temperature shrinkage hemostatic gel patch according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the pre-stretched elastomer and composite functional layer of the low-temperature shrinkage hemostatic gel patch according to an embodiment of the present invention. Figure 3 This is a schematic diagram of the woven structure of the pre-stretched elastomer of the low-temperature shrinkage hemostatic gel patch according to an embodiment of the utility model.

[0014] In the picture: 100. Flexible support membrane; 200. Pre-stretched elastomer; 300. Composite functional layer; 301. Cooling gel; 302. Medical pressure-sensitive adhesive; 400. Release paper. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0016] refer to Figures 1-3This utility model provides a low-temperature shrinkage hemostatic gel patch for arterial puncture sites. The low-temperature shrinkage hemostatic gel patch includes a four-layer structure, namely a flexible support film 100, a pre-stretched elastomer 200, a composite functional layer 300, and a release paper 400.

[0017] The flexible support film 100 is adhered and fixed to the top surface of the pre-stretched elastomer 200 so that the pre-stretched elastomer maintains its pre-stretched state. The flexible support film 100 not only supports the elastomer but also deforms flexibly so that the low-temperature shrinkage hemostatic gel patch can fit the skin well. When the flexible support film 100 is torn off from the pre-stretched elastomer 200, the pre-stretched elastomer 200 will undergo centripetal contraction.

[0018] The composite functional layer 300 is disposed on the bottom surface of the pre-stretched elastomer 200. The composite functional layer 300 includes a cooling gel 301 and a medical pressure-sensitive adhesive 302. The cooling gel 301 is located in the central area of ​​the bottom surface of the pre-stretched elastomer 200, and the medical pressure-sensitive adhesive 302 is located in the peripheral area of ​​the bottom surface of the pre-stretched elastomer 200. The release paper 400 covers the bottom surface of the composite functional layer 300 to protect the cooling gel 301 and the medical pressure-sensitive adhesive 302.

[0019] Specifically, the flexible support film 100 and the pre-stretched elastomer 200 are bonded together by a biodegradable adhesive layer, which is made of water-soluble polyvinyl alcohol or UV-degradable acrylate; the use of a biodegradable adhesive layer conforms to the concept of green environmental protection. In addition, the flexible support film 100 can be made of polyethylene terephthalate (PET), polypropylene (PP), or polyethylene (PE).

[0020] refer to Figure 3 In the low-temperature shrinkage hemostatic gel patch of this utility model embodiment, the pre-stretched elastomer 200 is a pre-stretched elastic fiber mesh made of polyurethane or silicone rubber, and the pre-stretched elastic fiber mesh has a radial woven structure; this radial woven structure allows the pre-stretched elastomer 200 to undergo centripetal contraction after the flexible support membrane is torn off. Figure 3 This is only a rough depiction of the radial weave structure and does not represent the actual proportions. The actual weave density on the product is much higher. Figure 3 The image shown is much larger.

[0021] Specifically, in the low-temperature shrinkage hemostatic gel patch of this utility model embodiment, the cold compress gel 301 can be a hydrogel or a phase change gel. For example, the hydrogel may contain a hydrogel matrix and chitosan dispersed in the hydrogel matrix, whereby the chitosan plays a role in hemostasis and sterilization. As another example, the phase change gel includes a phase change gel matrix (mainly composed of cold-storing components such as polyethylene glycol) and chitosan dispersed in the phase change gel matrix.

[0022] refer to Figure 2 In the low-temperature shrinkage hemostatic gel patch of this utility model embodiment, the medical pressure-sensitive adhesive 302 surrounds the cold compress gel 301, and a gap is formed between the medical pressure-sensitive adhesive 302 and the cold compress gel 301. This arrangement is to allow for a certain shrinkage space between the medical pressure-sensitive adhesive 302 and the cold compress gel 301.

[0023] The working principle of the low-temperature shrinkage hemostatic gel patch for arterial puncture sites provided in this embodiment of the utility model is as follows: the low-temperature shrinkage hemostatic gel patch can be applied to the skin after the release paper 400 is torn off. The adhesive position of the cold compress gel 302 needs to correspond to the position of the arterial puncture site, and the adhesive position of the medical pressure-sensitive adhesive 302 needs to correspond to the skin around the puncture site. After the patch is applied, the flexible support film 100 is peeled off from the pre-stretched elastomer 200, and then the pre-stretched elastomer 200 will undergo centripetal contraction (i.e., contraction towards the center of the pre-stretched elastomer).

[0024] As can be seen from the above, the low-temperature shrinkage hemostatic gel patch of this utility model can cool the skin and play a cold compress role through the cold compress gel 302, thereby relieving bleeding, pain and swelling. After the flexible support membrane 100 is torn off, the pre-stretched elastomer 200 generates centripetal contraction, thereby causing the skin around the puncture site to contract towards the puncture site, thereby achieving the purpose of accelerating the hemostasis speed.

[0025] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A low-temperature shrinkage hemostatic gel patch for arterial puncture sites, characterized in that, The device includes a flexible support film, a pre-stretched elastomer, a composite functional layer, and release paper. The flexible support film is adhered and fixed to the top surface of the pre-stretched elastomer to maintain its pre-stretched state. When the flexible support film is peeled off the pre-stretched elastomer, the pre-stretched elastomer undergoes centripetal contraction. The composite functional layer is disposed on the bottom surface of the pre-stretched elastomer and includes a cooling gel and a medical pressure-sensitive adhesive. The cooling gel is located in the central area of ​​the bottom surface of the pre-stretched elastomer, and the medical pressure-sensitive adhesive is located in the peripheral area of ​​the bottom surface of the pre-stretched elastomer. The release paper covers the bottom surface of the composite functional layer to protect the cooling gel and the medical pressure-sensitive adhesive.

2. The low-temperature shrinkage hemostatic gel patch as described in claim 1, characterized in that, The flexible support membrane and the pre-stretched elastomer are bonded together by a biodegradable adhesive layer, which is made of water-soluble polyvinyl alcohol or UV-degradable acrylate.

3. The low-temperature shrinkage hemostatic gel patch as described in claim 2, characterized in that, The flexible support membrane is made of polyethylene terephthalate (PET), polypropylene (PP), or polyethylene (PE).

4. The low-temperature shrinkage hemostatic gel patch as described in claim 1, characterized in that, The pre-stretched elastomer is a pre-stretched elastic fiber web made of polyurethane or silicone rubber, and the pre-stretched elastic fiber web has a radial woven structure.

5. The low-temperature shrinkage hemostatic gel patch as described in claim 1, characterized in that, The cooling gel is a hydrogel or a phase change gel.

6. The low-temperature shrinkage hemostatic gel patch as described in claim 5, characterized in that, The hydrogel comprises a hydrogel matrix and chitosan dispersed in the hydrogel matrix.

7. The low-temperature shrinkage hemostatic gel patch as described in claim 5, characterized in that, The phase change gel includes a phase change gel matrix and chitosan dispersed in the phase change gel matrix.

8. The low-temperature shrinkage hemostatic gel patch as described in claim 1, characterized in that, The medical pressure-sensitive adhesive surrounds the cooling gel, and a spacer is formed between the medical pressure-sensitive adhesive and the cooling gel.

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