CN108784772B - Telescopic hemostatic air bag - Google Patents
Telescopic hemostatic air bag Download PDFInfo
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- CN108784772B CN108784772B CN201810853320.XA CN201810853320A CN108784772B CN 108784772 B CN108784772 B CN 108784772B CN 201810853320 A CN201810853320 A CN 201810853320A CN 108784772 B CN108784772 B CN 108784772B
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- support rod
- air
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- 230000002439 hemostatic effect Effects 0.000 title claims abstract description 130
- 208000027418 Wounds and injury Diseases 0.000 claims abstract description 35
- 230000006378 damage Effects 0.000 claims abstract description 16
- 208000014674 injury Diseases 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims description 69
- 230000023597 hemostasis Effects 0.000 claims description 23
- 230000001681 protective effect Effects 0.000 claims description 21
- 229920001661 Chitosan Polymers 0.000 claims description 12
- 210000004204 blood vessel Anatomy 0.000 claims description 12
- 239000008280 blood Substances 0.000 claims description 10
- 210000004369 blood Anatomy 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 7
- 229920002379 silicone rubber Polymers 0.000 claims description 5
- 230000015271 coagulation Effects 0.000 claims description 4
- 238000005345 coagulation Methods 0.000 claims description 4
- 239000000084 colloidal system Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 206010052428 Wound Diseases 0.000 abstract description 22
- 230000000740 bleeding effect Effects 0.000 abstract description 13
- 230000006835 compression Effects 0.000 abstract description 7
- 238000007906 compression Methods 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 4
- 230000009518 penetrating injury Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 13
- 238000004806 packaging method and process Methods 0.000 description 10
- 210000004712 air sac Anatomy 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 208000007536 Thrombosis Diseases 0.000 description 3
- 230000023555 blood coagulation Effects 0.000 description 3
- 238000001804 debridement Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 238000001266 bandaging Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000017531 blood circulation Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 206010053567 Coagulopathies Diseases 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 108010080379 Fibrin Tissue Adhesive Proteins 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 229920000881 Modified starch Polymers 0.000 description 1
- 239000004368 Modified starch Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 230000035602 clotting Effects 0.000 description 1
- 239000000515 collagen sponge Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000034994 death Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 230000002008 hemorrhagic effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 235000019426 modified starch Nutrition 0.000 description 1
- 230000017074 necrotic cell death Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B2017/12004—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord for haemostasis, for prevention of bleeding
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Reproductive Health (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention relates to a telescopic hemostatic air bag, which belongs to the technical field of medical appliances; in the prior art, deep wounds are not easy to stop bleeding, the compression and expansion hemostatic air bag is adopted to stop bleeding of penetrating injuries and blind sidewalk injuries, telescopic design is adopted structurally, and the compression and expansion hemostatic air bag is applicable to deep injuries of different forms, and has the advantage of being innovative in the project.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a telescopic hemostatic air bag.
Background
The blood vessels at the joint of the limbs are distributed in a rich way, and the blood vessels are thick and have high pressure, so that the damage or fracture of the arterial vessel wall is easily caused after the blood vessels are hit by a bullet and the hard objects are pricked or pierced, thereby causing the rapid blood loss of wounded persons. The blood loss and bleeding speed and the blood flow pressure of the part are high, the structure limits the use of conventional hemostasis means such as compression bandaging, tourniquet blocking and the like, and the hemostatic bandage is one of the main causes of hemorrhagic death. There is currently no prior art solution for blocking hemostasis and rapid clotting for through injuries or blind track injuries of the above mentioned limb parts.
Disclosure of Invention
In view of the problems of the prior art, it is an object of the present invention to provide a telescopic hemostatic balloon for hemostasis of a blind or penetrating injury of a human or animal body.
To achieve the purpose, the invention adopts the following technical scheme:
a hemostatic balloon, characterized by: the hemostatic air bag comprises a support rod positioned in the middle, an inflatable air bag arranged on the support rod and hemostatic materials arranged on the surface of the inflatable air bag; when the inflatable air bag is inflated, the hemostatic material is unfolded and extruded to be closely attached to the injured tissue or blood vessel.
Preferably, the support rod is of a double-layer structure, the outer layer of the support rod is a fixed support rod, the inner layer of the support rod is an extensible support rod, and under the action of air inflation pressure, the inflatable air bag is inflated and unfolded to drive the extensible support rod to stretch.
Preferably, the extendable support bar 4-2 has a stopper and an elastic member at one end thereof located inside the fixed support bar 4-1.
Preferably, the upper part of the supporting rod is an air inlet cavity which is connected with the air passage, and the cavity wall is provided with an opening which is communicated with the inside of the air bag to form an air supply passage.
Preferably, a protective film is arranged on the surface of the hemostatic material, the hemostatic material and the protective film are of an integrated structure, and the whole hemostatic material and the protective film can be detached from the air bag wall of the inflatable air bag.
Preferably, the protective film is a water-soluble protective film.
Preferably, the expansion air bag is made of a silicon rubber material, can expand rapidly and can bear a pressure difference of 0.15 Mpa; the inflatable balloon expands under a pressure of 37.2kpa, and the volume of the inflatable balloon can be enlarged by 20 times at maximum.
Preferably, the hemostatic material is polymorphic chitosan hemostatic material.
Preferably, the upper part of the fixed support rod is an air inlet cavity, and the lower part of the air inlet cavity is an air chamber of the pressure sensor.
Preferably, the hemostatic material is folded over the surface of the inflatable balloon.
Compared with the prior art, the invention has at least the following beneficial effects: (1) The compression and expansion hemostatic air bag is adopted to compress hemostatic materials for hemostasis of through injuries and blind wounds, and the telescopic design is adopted structurally, so that the device is applicable to deep wounds with different sizes, lengths and forms, has the self-adaptability of the wounds, and solves the problem that deep wounds are difficult to stop bleeding; (2) The designed hemostatic device is small, exquisite, light and simple to operate, can be used by one hand, is convenient for post debridement treatment after hemostasis, and is particularly suitable for carrying; (3) The hemostatic material and the inflatable air bag can be integrally designed, and can be integrally taken out after pressure relief during the later-stage injury treatment, so that no sundry residue exists, and the hemostatic material is convenient for debridement and later-stage treatment.
Drawings
FIG. 1 is a schematic view of a telescopic hemostatic balloon according to the present invention in a collapsed state;
FIG. 2 is a schematic view of a telescopic hemostatic balloon according to the present invention in a deployed state;
FIG. 3 is a schematic view of an embedded hemostatic device of the present invention;
FIG. 4 is a schematic view of a sterile package of a hemostatic balloon of the present invention;
fig. 5 is another schematic structural view of the telescopic hemostatic balloon according to the present invention.
The reference numerals in the drawings are as follows: the device comprises a 10-gas storage module, a 20-control module, a 30-telescopic hemostatic air bag, a 40-sterile packaging bag, a 50-quick tearing opening, a 1-drawing type fixing support rod, a 2-fixing support rod air port, a 3-pressure sensor, a 3-1 pressure sensor air port, a 4-drawing type extension rod, a 4-1-fixing support rod, a 4-2-extensible support rod, a 5-air bag folding cavity, a 6-air bag cavity, a 7-air bag wall, an 8-hemostatic material, a 9-protective film, a 31-air bag upper end, a 32-air bag upper end limiting area, a 33-normal thickness air bag area, a 34-air bag lower end limiting area and a 35-air bag lower end.
The present invention will be described in further detail below. The following examples are merely illustrative of the present invention and are not intended to represent or limit the scope of the invention as defined in the claims.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
It is intended that the drawings illustrate only the basic inventive concepts of the present invention and are not to be considered as the only and correct embodiment of the invention; the examples given in the following description are only for the purpose of better illustrating the invention, and certain preferred examples given are not to be construed as the only exact embodiment of the invention, and any variant implementation, without inventive effort, by a person skilled in the art is within the scope of the invention.
In order to facilitate the understanding of the technical solution of the present invention, exemplary but non-limiting embodiments of the present invention are as follows:
as shown in fig. 3, the embedded active first-aid hemostatic device is composed of a gas storage module 10, a control module 20, a telescopic hemostatic air bag 30 and the like.
The gas storage module 10 is connected with the control module 20 through a gas quick-connection plug and a quick-connection socket, so that the disassembly is convenient. The control module 20 controls the air circuit electromagnetic valve to inflate and pressurize the telescopic hemostatic air bag 30, and realizes pressure protection and step-type depressurization after hemostasis when the telescopic hemostatic air bag 30 is inflated. The telescopic hemostatic air bag 30 takes two-stage nested pull type struts as a support, and expands and extends under the pushing of gas pressure so as to adapt to wounded tracts with different shapes and sizes; the telescopic hemostatic air bag 30 adopts a high-elasticity silicon capsule body, the outer layer is covered with hemostatic material, and the hemostatic material is pressed to be fully contacted with the bleeding tissue of the wound after the air bag is inflated, so that the aims of pressure hemostasis and local coagulation in the wound are achieved.
Fig. 1 is a schematic structural view of a telescopic hemostatic balloon according to the present invention in a folded state, the telescopic hemostatic balloon comprising: a drawing type fixing support rod 1, a fixing support rod air port 2, a pressure sensor 3 and a pressure sensor air port 3-1; a pull-out support extension rod 4; an airbag folding cavity 5; 6-balloon cavity; 7-balloon wall; 8-hemostatic material; 9-protective film.
Example 1
As shown in fig. 1, the telescopic hemostatic balloon is in a collapsed state, and comprises an inflatable balloon, a pull-out support extension rod 4, a hemostatic material 8 and a protective film 9. The air bag is made of silicon rubber material, can expand rapidly and can bear 0.15Mpa pressure difference.
The hemostatic material 8 is adhered to the surface of the balloon and can be expanded and unfolded along with the inflation of the balloon.
The supporting rod is made of medical stainless steel, the diameter of the supporting rod is reduced as much as possible on the premise of ensuring the supporting strength during insertion, and the telescopic hemostatic air bag is convenient to insert into a wound during emergency hemostasis. In the manufacturing process, in order to ensure the air tightness between the air bag and the support rod, the air bag and the outer surface of the support rod are connected and fixed in a hot-press gluing mode.
The hemostatic balloon 30 is made of medical silicon rubber material, and the surface of the balloon can be expanded and extended outwards under the action of internal gas pressure so as to be connected with blood vessels in the wound, thereby achieving the purpose of compression hemostasis. In use, considering that the upper and lower ends of the hemostatic balloon are often located at the exit or entrance of the wound, if the coefficients of expansion of the balloon surfaces are the same, the balloon at the exit or entrance of the wound will likely expand out of the wound, with the result that the hemostatic balloon 30 will not be inflated to the desired hemostatic pressure, resulting in hemostatic failure, and the inflation of the balloon will also be inconvenient for external bandaging of the wound.
Therefore, when designing the expansion coefficient of the air bag, as shown in fig. 5, at the upper end 31 of the air bag, the air bag and the fixed support rod 4-1 are connected by hot-press bonding to form a connecting part, and at the lower end 35 of the air bag, the air bag and the extendable support rod 4-2 are connected by hot-press bonding to form a connecting part; the elastic coefficient of the material is 2 times of that of the middle region in the region of 1-2cm above and below the upper end 31 and the lower end 35 of the air bag, so that the air bag bulges out from the inlet or the outlet of the wound in a mode on the premise of ensuring the pressurization and the conformal expansion of the air bag in the wound, and the expected pressurization and hemostasis effects are achieved.
The hemostatic material 8 can be gelatin sponge, collagen sponge, fibrin glue, modified starch hemostatic material, polymorphic chitosan hemostatic dressing and other hemostatic materials, and preferably adopts polymorphic chitosan hemostatic dressing, and has good ductility, so that the hemostatic material is quite suitable for an air bag which needs to be inflated in the application.
When the pressure in the hemostatic air sac is larger than the contraction of the blood vessel of a human body and can fully contact with the bleeding blood vessel, the hemostatic air sac can theoretically plug the bleeding point of the blood vessel. However, too high a pressure or duration will cause damage to surrounding tissue and even tearing or necrosis of tissue, resulting in secondary damage. Therefore, when the hemostatic air sac is designed, hemostatic drugs or materials are required to be attached to the surface of the air sac, blood coagulation is carried out at a blood vessel bleeding point while hemostasis is carried out by compression, and local thrombus is generated, so that the bleeding point is plugged by the thrombus, the pressure value in the hemostatic air sac can be properly reduced, and the occurrence of secondary injury is reduced.
When the hemostatic air bag is used for hemostasis, the surface area of the air bag after inflation can be expanded by several times to tens of times, for example, powder or solid hemostatic drugs or materials are adopted, the surface of the inflated air bag can not be uniformly distributed, and the local position can not achieve the blood coagulation effect. Therefore, on the basis of multiple experiments, the polymorphic chitosan hemostatic material is selected. The hemostatic material is in liquid state below 23deg.C and in colloid state above 23deg.C.
Therefore, when the hemostatic air bag is processed and manufactured, the production environment temperature is kept below 23 ℃, the polymorphic chitosan hemostatic material is filled between the hemostatic air bag and the water-soluble protective film, and when the hemostatic air bag is in a storage state, the liquid chitosan hemostatic material can be ensured to be uniformly compressed between the hemostatic air bag and the water-soluble protective film. When hemostasis is carried out, a great deal of bleeding is carried out on the hemostasis part inserted by the hemostasis air bag, the temperature is at least higher than 35 ℃, at the moment, the polymorphic chitosan hemostasis material is in a colloid state, and because of the adhesion effect of the polymorphic chitosan hemostasis material and the surface of the hemostasis air bag, the hemostatic material can be stretched along with the expansion of the surface of the air bag, and therefore the hemostasis material is distributed on any surface of the hemostasis air bag, and the coagulation effect of the hemostasis air bag is ensured.
The pull type support extension rod 4 is of a double-layer structure design, the outer layer is a fixed support rod 4-1, the inner layer is an extensible support rod 4-2, one end of the extensible support rod 4-2, which is positioned at the inner part of the fixed support rod 4-1, is provided with a stop piece, when the air pressure is excessive, the extensible support rod 4-2 can be prevented from sliding out of the inner part of the fixed support rod 4-1, preferably, one end of the extensible support rod 4-2, which is positioned at the inner part of the fixed support rod 4-1, is provided with an elastic component, when the air pressure is sufficiently high, the extensible support rod 4-2 extends along with the expansion of the air bag, and when the air pressure is not high, the extensible support rod 4-2 cannot slide out, so that accidental breakage of the protective film 9 is prevented in the transportation process and the like.
The upper part of the fixed support rod 4-1 is an air inlet cavity which is connected with an air passage of the electromagnetic valve, and the cavity wall is provided with an opening which is communicated with the inside of the air bag to form an air supply passage. The lower part of the air inlet cavity is provided with a pressure sensor air chamber which is communicated with the air bag and used for detecting the pressure of the air bag in real time; before use, the telescopic hemostatic air bag is in a furled state.
Example 2
As shown in fig. 2, the telescopic hemostatic air bag is in an expanded and unfolded state, when the inflatable hemostatic air bag is expanded and unfolded, the outermost side of the inflatable hemostatic air bag is provided with an air bag wall 7, the inside of the inflatable hemostatic air bag is provided with an air bag cavity 6, the outer surface of the air bag wall 7 is provided with a hemostatic material 8, the outer surface of the hemostatic material 8 is provided with a protective film 9, the inflatable hemostatic air bag is made of a silicone rubber material, has stronger ductility and unfolding strength, is expanded under the action of 37.2kpa pressure, and can be expanded by 20 times at maximum, so that the compression filling of a wound is realized.
The hemostatic material 8 is folded and arranged on the surface of the air sac wall 7 in a bonding or clamping way; when the air bag is inflated, the hemostatic material is unfolded and extruded to be closely attached to the injured tissue or blood vessel, the blood vessel or tissue is blocked from bleeding rapidly, and a thrombus mass is formed at a bleeding point under the action of the hemostatic material, so that exudative bleeding is further blocked.
The hemostatic material can react with blood after contacting with blood, so that when the hemostatic air bag is inserted into a wound, a large amount of blood flows out without protection, and the hemostatic material can react with blood to fail after contacting with blood, and can not generate the blood coagulation when reaching the point where hemostasis is needed. Therefore, when the product is designed, the hemostatic air bag and the outer side of the hemostatic material are covered with the water-soluble protective layer, and the water-soluble protective layer is broken and dissolved when the air bag expands and contacts with blood, so that the hemostatic material is exposed to generate the coagulation effect, and the aging of the hemostatic material caused by the contact and reaction of the hemostatic material and the blood accumulation in the wound during the insertion of the air bag is avoided.
The outside of the hemostatic material 8 is covered with a water-soluble protective film 9, which is broken and dissolved when the air bag expands to expose the hemostatic material 8, so as to avoid the hemostatic material failure caused by contact and reaction of the hemostatic material and the blood accumulation in the wound when the air bag is inserted.
In view of the fact that the water-soluble protective film 9 covered on the outer side of the hemostatic material 8 is extremely easy to break and lose, the hemostatic material 8 and the water-soluble protective film 9 are of an integrated structure, and the whole hemostatic material 8 and the water-soluble protective film 9 can be detached from the air sac wall, so that the hemostatic material and the water-soluble protective film can be transported and stored respectively; the hemostatic material 8, the water-soluble protective film 9 and the inflatable air bag can be integrally designed, and can be integrally taken out after pressure relief in the later-stage injury treatment, so that no sundry residue exists, and debridement and later-stage treatment are facilitated.
The drawing type supporting extension rod 4 is of a double-layer structure design, the outer layer is a fixed supporting rod 4-1, the inner layer is an extensible supporting rod 4-2, and the drawing type supporting extension rod is connected with the lower end of the air bag, so that the telescopic hemostatic air bag can be unfolded in a proper shape according to the shape and the size of a wound under the action of inflation pressure. The upper part of the fixed support rod 4-1 is an air inlet cavity which is connected with an air passage of the electromagnetic valve, and the cavity wall is provided with an opening which is communicated with the inside of the air bag to form an air supply passage. The lower part of the air inlet cavity is an air chamber of the pressure sensor 3, an air port 3-1 of the pressure sensor 3 is communicated with the air bag, and the pressure of the air bag is detected in real time. After the telescopic hemostatic air bag is inserted into the wound, the folded part of the air bag is expanded forwards under the action of the air inflation pressure to drive the support extension rod to extend until the support extension rod encounters resistance or is extended to the maximum size, and then the support extension rod stops, so that the conformal filling is realized.
Example 3
The same steps of this embodiment as in the previous embodiment will not be repeated, and this embodiment will only introduce certain variations or more specific steps.
As shown in fig. 4, a schematic view of a sterile packaging for a hemostatic balloon; the fixing holes are reserved above the packaging bag 40, so that the packaging bag is convenient to carry and fix. Below the fixing hole is a quick tearing incision 50, which is convenient for quick taking out of the hemostatic air bag during use. The front surface of the packaging bag is made of transparent material, and the rear surface of the packaging bag is made of milky opaque polyethylene material, so that the packaging bag can be positioned and taken during use.
In the daily storage state, the hemostatic balloon 30 is enclosed in a sterile packaging bag 40. The packaging bag 40 is made of polyethylene material, and the hemostatic air bag is sterilized by ethylene oxide or gamma rays according to the sterilizing standard requirement of the sterilized articles, and then is sealed in the sterilized packaging bag, and the sterilized hemostatic air bag 30 has a sterile validity period of 3 years.
The storage state before use is shown in fig. 4, and the telescopic hemostatic balloon 30 is in a collapsed state. Wherein, extensible bracing piece draws in fixed bracing piece, and hemostatic gasbag is received to the same length with the bracing piece with folding mode. The hemostatic air bag protecting film is connected with the top of the extensible supporting rod to form a columnar structure with a conical front end, and the telescopic hemostatic air bag is conveniently inserted into the wound channel during use.
The telescopic hemostatic balloon 30 comprises an inflatable balloon and a pull-out type support extension rod 4; in order to enable the hemostatic material to be closely attached to the injured part better, the inflatable air bag is provided with fastening structures at the transverse end part and/or the longitudinal end part, and the fastening structures comprise locking structures and bonding structures which are tethered, preferably the bonding structures can be changed in size and adjusted according to actual conditions.
The pull type support extension rod 4 is of a double-layer structure, the outer layer is a fixed support rod 4-1, the inner layer is an extensible support rod 4-2, the extensible support rod 4-2 can slide back and forth along the fixed support rod 4-1, a clamping part is further arranged on the fixed support rod 4-1, and the pull type support extension rod 4-2 is fixed by pressing the clamping part, so that the pull type support extension rod 4 cannot slide back and forth relative to the fixed support rod 4-1, and the length of the pull type support extension rod 4 can be adjusted according to the needs of actual wounded.
The applicant states that the detailed structural features of the present invention are described by the above embodiments, but the present invention is not limited to the above detailed structural features, i.e. it does not mean that the present invention must be implemented depending on the above detailed structural features. It should be apparent to those skilled in the art that any modifications of the present invention, equivalent substitutions of selected components of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope of the present invention and the scope of the disclosure.
The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the scope of the technical concept of the present invention, and all the simple modifications belong to the protection scope of the present invention.
In addition, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.
Moreover, any combination of the various embodiments of the invention can be made without departing from the spirit of the invention, which should also be considered as disclosed herein.
Claims (7)
1. A hemostatic balloon for a through injury or a blind sidewalk injury, characterized by: the hemostatic balloon comprises a support rod positioned in the middle, an inflatable balloon arranged on the support rod, polymorphic chitosan hemostatic material arranged on the surface of the inflatable balloon, and a water-soluble protective film covered on the outer side of the hemostatic material, wherein the water-soluble protective film is broken and dissolved when the inflatable balloon is inflated and contacted with blood, so that the hemostatic material is exposed, and coagulation is generated; when the inflatable air bag is inflated, the polymorphic chitosan hemostatic material is unfolded and extruded to be closely attached to the injured tissue or blood vessel;
the upper end and the lower end of the expansion air bag are positioned at the outlet or inlet of the injury channel, and the expansion coefficient of the upper end and the lower end of the surface of the expansion air bag in the range of 1-2cm above and below the upper end and the lower end of the surface of the expansion air bag is twice that of the middle area so as to prevent the air bag positioned at the outlet or inlet of the injury channel from expanding out of the injury channel;
the liquid chitosan hemostatic material is uniformly compressed between the expansion hemostatic balloon and the water-soluble protective film when the hemostatic balloon is in a storage state, and the polymorphic chitosan hemostatic material is in a colloid state and is stretched along with the expansion of the balloon surface when hemostasis is carried out;
the support rod is of a double-layer structure, the outer layer of the support rod is a fixed support rod, the inner layer of the support rod is an extensible support rod, one end of the extensible support rod, which is positioned at the inner part of the fixed support rod, is provided with an elastic component, and under the action of air inflation pressure, the inflatable air bag is inflated and unfolded to drive the extensible support rod to stretch.
2. A hemostatic balloon according to claim 1 wherein: the extendable support bar has a stop at one end thereof located inside the fixed support bar.
3. A hemostatic balloon according to claim 1 wherein: the upper part of the supporting rod is an air inlet cavity which is connected with the air passage, and the cavity wall is provided with an opening which is communicated with the inside of the air bag to form an air supply passage.
4. A hemostatic balloon according to claim 1 wherein: the hemostatic material and the water-soluble protective film are of an integrated structure, and the whole hemostatic material and the water-soluble protective film can be detached from the balloon wall of the inflatable balloon.
5. A hemostatic balloon according to claim 1 wherein: the expansion air bag is made of a silicon rubber material, can expand rapidly and can bear a pressure difference of 0.15 Mpa; the inflatable balloon expands under a pressure of 37.2kpa, and the volume of the inflatable balloon can be enlarged by 20 times at maximum.
6. A hemostatic balloon according to claim 1 wherein: the upper part of the fixed support rod is an air inlet cavity, and the lower part of the air inlet cavity is an air chamber of the pressure sensor.
7. A hemostatic balloon according to claim 1 wherein: the hemostatic material is folded over the surface of the inflatable balloon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810853320.XA CN108784772B (en) | 2018-07-30 | 2018-07-30 | Telescopic hemostatic air bag |
Applications Claiming Priority (1)
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| CN110897671A (en) * | 2019-12-20 | 2020-03-24 | 中国人民解放军陆军特色医学中心 | Ventilated nasal cavity hemostatic device |
| CN111237578A (en) * | 2020-03-26 | 2020-06-05 | 徐有陈 | Finger-press type inflatable plug |
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