CN109044460B - Foldable mixed hemostasis structure based on spiral spring and hemostasis device - Google Patents
Foldable mixed hemostasis structure based on spiral spring and hemostasis device Download PDFInfo
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- CN109044460B CN109044460B CN201811023712.XA CN201811023712A CN109044460B CN 109044460 B CN109044460 B CN 109044460B CN 201811023712 A CN201811023712 A CN 201811023712A CN 109044460 B CN109044460 B CN 109044460B
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- scissor
- air bag
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- 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
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- 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
Abstract
The invention discloses a foldable hybrid hemostasis structure based on a helical spring and a hemostasis device. The hybrid self-adaptive structure consists of an air bag, an inflating device and a self-adaptive spiral spring unfolding structure. The self-adaptive spiral spring unfolding structure consists of spiral springs and supporting rods, wherein the spiral springs are distributed in a layered mode, one in each layer and fixed on the supporting rods. The support rod consists of a first scissor-type hinge unit, a second scissor-type hinge unit and a support rod elastic element. When the mixed hemostatic structure is used, the mixed hemostatic structure is injected into a wound, the air bag is inflated by the inflating device to drive the hemostatic material outer dressing film to be in contact with the wound surface, the elastic potential energy released by the spiral spring is expanded along the radial direction to provide support for the air bag, and the air bag stops inflating when the pressure meets the wound pressing hemostatic condition, so that the hemostatic function is realized.
Description
Technical Field
The invention relates to a novel penetrating wound hemostasis structure, in particular to a self-adaptive mixed hemostasis structure and an injection type mixed hemostasis device.
Background
The existing battlefield penetration hemostasis treatment mainly adopts methods such as compression hemostasis, burning hemostasis, grease and gauze filling hemostasis and the like, and the conventional hemostasis methods are far from meeting the emergency requirements of penetration hemostasis due to the limitation of wartime conditions or treatment effects, so that a new hemostasis method and a new hemostasis device are urgently needed to be developed to fill the blank. RevMedx, a medical technology company in Oregon, USA, developed a syringe-like medical device named 'XStat' with a built-in mini-cotton swab that changed the way that the medic could treat gunshot and shrapnel wounds. When in use, dozens of pill-shaped micro absorbent cottons are injected into wounds by the military medical personnel and are treated by chitosan. Chitosan is capable of clotting blood and fighting infections. In a few seconds, the cotton wool can expand ten times, close the wound and stop bleeding. However, the method of stopping bleeding by means of blood-sucking expansion is very dangerous for the wounded with big hemorrhage in the battlefield, and the strength of the material is weakened after the material is expanded, so that the material is difficult to provide continuous extrusion force on the wound surface, and the function of the material needs to be further improved.
Disclosure of Invention
The technical problem to be solved by the invention is to design a transfixion hemostasis structure with shape and pressure adaptability aiming at the defects of the prior art. The hemostatic material outer coating film is wrapped on the surface of the mixed self-adaptive structure, the self-adaptive spiral spring unfolding structure is compressed before use to store energy, when the hemostatic material outer coating film is used, the spiral spring releases elastic potential energy and the air bag is inflated by the inflating device to unfold the air bag, corresponding deformation is generated according to the geometric shape of a wound to realize shape self-adaptation, corresponding gas is inflated according to blood pressure and the elasticity of human tissues to realize pressure self-adaptation, the hemostatic material outer coating film is driven to be attached to the wound surface, rapid filling, blood coagulation and hemostasis are realized, and the lives of soldiers injured in battle are saved.
In order to achieve the purpose, the invention adopts the technical scheme that:
a mixed hemostatic structure comprises a hemostatic material external application film and is characterized by also comprising a mixed self-adaptive structure; the hybrid self-adaptive structure consists of an air bag, an inflating device and a self-adaptive spiral spring unfolding structure, wherein the inflating device is connected to the upper end of the air bag and can inflate or deflate the air bag, and the self-adaptive spiral spring unfolding structure is positioned in the air bag; the self-adaptive spiral spring unfolding structure consists of a spiral spring and a supporting rod; the spiral springs are distributed in a layered mode, one is arranged in each layer, and the bottom ends of the spiral springs are fixed on the supporting rod; the supporting rod consists of a first scissor-type hinge unit, a second scissor-type hinge unit and a supporting rod elastic element; the first scissor-type hinge unit (9) is formed by hinging and connecting two rod pieces (12) at the center; the second scissor-type hinge unit (10) is composed of two rod pieces (12) and a pin shaft (13), the two rod pieces are hinged in the middle, and the pin shaft is positioned on the hinged point; the bottom end of the spiral spring (7) is fixed on the pin shaft (13); the rod piece (12) of the first scissor-type hinge unit is connected with the rod piece (12) of the second scissor-type hinge unit through a connecting hinge, and two ends of the supporting rod elastic element (11) are respectively connected to the connecting hinge of the first scissor-type hinge unit and the second scissor-type hinge unit. The volume of the hemostasis structure can be reduced by adopting the scissor hinge unit, and the storage capacity of the hemostasis device is improved.
The air bag has a large elastic modulus, the outer end of the air bag is wrapped on the spiral spring without being connected with the spiral spring, the upper part of the air bag is hermetically connected with the inflating device, the lower part of the air bag is stuck and fixed on the supporting rod, and the hemostatic material external application film is stuck and fixed outside the air bag.
The inflator may control the pressure of the gas inside the bladder according to the blood pressure.
The radius of the bottom of the spiral spring is R and the radius of the top of the spiral spring is R under the action of no external force.
The utility model provides an injection formula mixes hemostasis device, includes the syringe and is located the hemostasis structure of syringe, its characterized in that: the hemostatic structure comprises a hemostatic material outer coating film and a mixed self-adaptive structure; the hybrid self-adaptive structure consists of an air bag, an inflating device and a self-adaptive spiral spring unfolding structure, wherein the inflating device is connected to the upper end of the air bag and can inflate or deflate the air bag, and the self-adaptive spiral spring unfolding structure is positioned in the air bag; the self-adaptive spiral spring unfolding structure consists of a spiral spring and a supporting rod; the spiral springs are distributed in a layered mode, one is arranged in each layer, and the bottom ends of the spiral springs are fixed on the supporting rod; the supporting rod consists of a first scissor-type hinge unit, a second scissor-type hinge unit and a supporting rod elastic element.
The syringe front end presents a chambering blade. When the wound is small, the wound is cut to place the hemostatic device.
Through the outer application membrane of the outer packing hemostatic material of the mixed self-adaptive structure, the outer application membrane of the hemostatic material is contacted with the wound surface by releasing elastic strain energy through the helical spring and plays a role of pressing, and hemostasis and blood coagulation are realized.
The elastic strain energy released by the helical spring is matched with the flexibility of the hemostatic material external application film, so that the geometric adaptability of the penetrated wound can be realized, and the self-adaptive filling can be realized according to the shape of the wound.
The spiral spring can release corresponding strain energy according to the blood pressure and the elasticity of human tissues to be balanced with the strain energy, so that different requirements on the wound hemostasis pressure are met, and the pressure self-adaptability is realized.
The elastic potential energy released by the elastic element of the supporting rod drives the supporting rod to unfold, thereby ensuring that the hemostatic structure has enough supporting area.
The expansion of the spiral spring can be inhibited through the air bag, and the injection and the taking out of the hemostatic structure are convenient; after the air bag is inflated and expanded, the spiral spring is unfolded to provide support for the air bag, the support capacity of the air bag is improved, and the spiral spring and the air bag have complementary functions.
When the hemostasis is completed, the pressure on the wound can be reduced by adjusting the air pressure in the air bag, so that the wound tissue can be subjected to blood again to prevent the tissue necrosis near the wound.
The use scheme of the mixed hemostatic structure is as follows: the hybrid hemostatic structure exists in an initial contracted state, a normal use state, and a free deployed state. In the initial contracted state, the hybrid hemostatic structure is stored in the syringe; under the normal use state, the mixed self-adaptive structure deforms correspondingly according to the shape of the wound, so that the hemostatic material external application film is tightly attached to the surface of the wound; in the free deployment state, the self-adaptive helical spring deployment structure is restrained by the airbag. The production process is converted from a free unfolding state to an initial contraction state, the mixed self-adaptive structure is wrapped with the hemostatic material external application film and stored in the injector, and the spiral spring contracts and the support rod is folded to store elastic potential energy. The use process is that the initial contraction state is converted into the normal use state, the mixed hemostatic structure is injected into a wound when in use, when the wound is small, the wound is cut by a chambering blade at the front end of the injector, then the hemostatic structure is injected into the wound, the elastic potential energy is released by the elastic element of the supporting rod, and the self-adaptive helical spring unfolding structure is expanded along the axial direction; the air bag is inflated by opening the inflating device so as to drive the hemostatic material outer dressing film to be in contact with the wound surface, the spiral spring releases elastic potential energy and radially expands to provide support for the air bag, the inflating device has a pressure detection function, and the air bag stops inflating and maintains the internal pressure of the air bag when the pressure meets the wound pressing hemostasis condition, so that the hemostasis function is realized, and the pressure of the air bag is timely adjusted so as to protect tissues near the wound. The taking-out process is that the normal use state is converted into the free expansion state, after the hemostasis effect is achieved, the gas in the air bag is released, the mixed self-adaptive structure shrinks, the mixed hemostasis structure is taken out from the wound, and the mixed hemostasis structure is recovered to the free expansion state.
Drawings
FIG. 1 is a schematic view of an injection-type hybrid hemostatic device;
FIG. 2 is a view showing an initial folded state of the hemostatic material dressing film;
FIG. 3 is a state diagram of the application of the hemostatic material dressing membrane;
FIG. 4 is a hybrid adaptive architecture diagram;
FIG. 5 is a view of the self-adaptive coil spring deployment;
FIG. 6 is a coil spring diagram;
FIG. 7 is a view of the support bar;
FIG. 8 is a diagram of a first scissor-hinge unit;
FIG. 9 is a diagram of a second scissor-hinge unit;
FIG. 10 is a schematic view of a scissor-hinge joint;
FIG. 11 is a diagram of the hybrid hemostatic structure in an initial contracted state;
FIG. 12 is a diagram illustrating the normal use of the hybrid hemostatic structure;
fig. 13 is a free-deployment view of the hybrid hemostatic structure.
Detailed Description
As shown in fig. 1, the injection type mixing hemostasis device is composed of an injector 1, a hemostasis material outer coating film 2 and a mixing adaptive structure 3. At the front end of the syringe 1 there is a chambering blade 14, which cuts the wound to place the hemostatic device when the wound is small. Fig. 2 and 3 show an initial folded state and a state of use of the hemostatic material outer coating film 2, respectively, and the hemostatic material outer coating film 2 has a certain flexibility and can be expanded by blood (water). As shown in fig. 4, the hybrid adaptive structure 3 is composed of an airbag 4, an inflator 5 and an adaptive helical spring deployment structure 6, wherein the inflator 5 is connected to the upper end of the airbag 4 and can inflate or deflate the airbag, the adaptive helical spring deployment structure 6 is located in the airbag 4, the airbag 4 has a large elastic modulus, the adaptive helical spring deployment structure 6 can be restrained to shrink, and a hemostatic material coating film is adhered and fixed outside the airbag 4. The inflator 5 can control the gas pressure inside the airbag according to the blood pressure. As shown in fig. 5, the adaptive coil spring deployment structure 6 is composed of a coil spring 7 and a support rod 8; the spiral springs 7 are distributed in a layered mode, one is arranged on each layer, and the bottom ends of the spiral springs are fixed on the supporting rod 8. As shown in fig. 6, the coil spring 7 has a bottom radius R and a top radius R without an external force. As shown in fig. 7, the support bar 8 is composed of a first scissor-hinge unit 9, a second scissor-hinge unit 10, and a support bar elastic member 11. As shown in fig. 8, the first scissor-hinge unit 9 is generally hingedly connected at the center by two bars 12. As shown in fig. 9, the second scissor hinge unit 10 is hinged at the center by two rods 12 via a pin 13, and the bottom end of the coil spring is fixed to the pin 13. As shown in fig. 10, the rod members 12 of the adjacent scissor hinge units are connected by a connecting hinge, and two ends of the elastic member 11 of the support rod are respectively connected to the connecting hinges of the scissor hinge units of the adjacent support rod. The volume of the hemostasis structure can be reduced by adopting the scissor hinge unit on the supporting rod, and the storage capacity of the hemostasis device is improved.
The production and use processes of the hybrid hemostatic structure are as follows: during production, the hemostatic material coating film is pasted on the outer side of the air bag in the mixed self-adaptive structure and is stored in the injector together, the spiral spring 7 and the support rod elastic element 11 store elastic potential energy, and at the moment, the mixed hemostatic structure is in an initial contraction state (as shown in fig. 11). When the mixed hemostatic structure is used, the mixed hemostatic structure is injected into a wound, when the wound is small, the wound is cut by a chambering blade at the front end of the injector, then the hemostatic structure is injected into the wound, and the elastic potential energy of the support rod elastic element 11 is released to enable the hemostatic structure to expand axially; the air bag 4 is inflated by opening the inflating device 5 so as to be expanded, the hemostatic material outer coating film 2 is driven to be contacted with the wound surface, and the spiral spring 7 releases elastic potential energy to expand along the radial direction so as to provide support for the air bag 4. As shown in fig. 12, the hybrid hemostasis structure is in a normal use state, the air cell 4 is inflated by the inflating device 5 according to the elasticity and blood pressure of the human tissue 15, the coil spring 7 expands along the radial direction to provide support for the air cell, the hemostatic material outer dressing film 2 is driven together to be attached to the wound surface, and the air cell stops inflating and maintains the pressure in the air cell when the pressure meets the wound pressing hemostasis condition, so that the hemostasis function is realized, and meanwhile, the self-adaptive requirements on shape and pressure can also be met. After reaching the hemostatic effect, the gas in the balloon is released, the hybrid self-adaptive structure contracts, the hybrid hemostatic structure is taken out of the wound, and the hybrid hemostatic structure is restored to the free-deployment state (as shown in fig. 13).
Claims (6)
1. A foldable hybrid hemostatic structure based on a coil spring, which comprises a hemostatic material coating film (2) and is characterized by further comprising a hybrid adaptive structure (3); the hybrid self-adaptive structure (3) consists of an air bag (4), an inflating device (5) and a self-adaptive spiral spring unfolding structure (6), wherein the inflating device (5) is connected to the upper end of the air bag (4) and can inflate or deflate air into or out of the air bag, and the self-adaptive spiral spring unfolding structure (6) is positioned in the air bag (4); the self-adaptive spiral spring unfolding structure (6) consists of a spiral spring (7) and a supporting rod (8); the spiral springs (7) are distributed in a layered mode, one is arranged in each layer, and the bottom ends of the spiral springs are fixed on the supporting rod (8); the supporting rod (8) consists of a first scissor-type hinge unit (9), a second scissor-type hinge unit (10) and a supporting rod elastic element (11); the first scissor-type hinge unit (9) is formed by hinging and connecting two rod pieces (12) at the center; the second scissor-type hinge unit (10) is composed of two rod pieces (12) and a pin shaft (13), the two rod pieces of the second scissor-type unit are hinged in the middle, and the pin shaft is positioned on a hinged joint of the middle; the bottom end of the spiral spring (7) is fixed on the pin shaft (13); the rod piece (12) of the first scissor-type hinge unit is connected with the rod piece (12) of the second scissor-type hinge unit through a connecting hinge, and two ends of the supporting rod elastic element (11) are respectively connected to the connecting hinge of the first scissor-type hinge unit and the second scissor-type hinge unit.
2. The foldable hybrid hemostatic structure of claim 1, wherein: the air bag (4) is wrapped at the outer end of the spiral spring (7) without being connected with the spiral spring, the upper part of the air bag (4) is hermetically connected with the inflating device, the lower part of the air bag (4) is stuck and fixed on the supporting rod, and the hemostatic material external application film is stuck and fixed outside the air bag (4).
3. The foldable hybrid hemostatic structure of claim 1, wherein: the inflator (5) controls the gas pressure in the airbag according to the blood pressure.
4. The foldable hybrid hemostatic structure of claim 1, wherein: the radius of the bottom of the spiral spring (7) is R, the radius of the top of the spiral spring is R, and R is smaller than R.
5. The utility model provides an injection formula mixes hemostasis device, includes the syringe and is located the hemostasis structure of syringe, its characterized in that: the hemostatic structure comprises a hemostatic material external application film (2) and a mixed self-adaptive structure (3); the hybrid self-adaptive structure (3) consists of an air bag (4), an inflating device (5) and a self-adaptive spiral spring unfolding structure (6), wherein the inflating device (5) is connected to the upper end of the air bag (4) and can inflate or deflate air into or out of the air bag, and the self-adaptive spiral spring unfolding structure (6) is positioned in the air bag (4); the self-adaptive spiral spring unfolding structure (6) consists of a spiral spring (7) and a supporting rod (8); the spiral springs (7) are distributed in a layered mode, one is arranged in each layer, and the bottom ends of the spiral springs are fixed on the supporting rod (8); the supporting rod (8) consists of a first scissor-type hinge unit (9), a second scissor-type hinge unit (10) and a supporting rod elastic element (11); the first scissor-type hinge unit (9) is formed by hinging and connecting two rod pieces (12) at the center; the second scissor-type hinge unit (10) is composed of two rod pieces (12) and a pin shaft (13), the two rod pieces of the second scissor-type unit are hinged in the middle, and the pin shaft is positioned on a hinged joint of the middle; the bottom end of the spiral spring (7) is fixed on the pin shaft (13); the rod piece (12) of the first scissor-type hinge unit is connected with the rod piece (12) of the second scissor-type hinge unit through a connecting hinge, and two ends of the supporting rod elastic element (11) are respectively connected to the connecting hinge of the first scissor-type hinge unit and the second scissor-type hinge unit.
6. An injectable hybrid hemostatic device according to claim 5, wherein: the front end of the injector (1) is provided with a reaming blade (14).
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| CN201811023712.XA CN109044460B (en) | 2018-09-03 | 2018-09-03 | Foldable mixed hemostasis structure based on spiral spring and hemostasis device |
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| CN201811023712.XA CN109044460B (en) | 2018-09-03 | 2018-09-03 | Foldable mixed hemostasis structure based on spiral spring and hemostasis device |
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| CN109044460B true CN109044460B (en) | 2020-10-02 |
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| CN102451026A (en) * | 2010-10-25 | 2012-05-16 | 西安科威医疗科技有限公司 | Compression hemostat applied to esophagus and fundus ventriculi |
| CN201987604U (en) * | 2011-02-13 | 2011-09-28 | 郭光霞 | Vaginal compression hemostasis device |
| CN104847163B (en) * | 2015-03-25 | 2017-01-25 | 东南大学 | Assembly-free hinge-locked foldable tent |
| CN106337499B (en) * | 2016-09-19 | 2018-07-27 | 东南大学 | The radial double-deck flexible grid structure |
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