CN109091188B - Foldable staggered elastic plate hemostasis structure with inhaul cable, hemostasis device and hemostasis method - Google Patents
Foldable staggered elastic plate hemostasis structure with inhaul cable, hemostasis device and hemostasis method Download PDFInfo
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- 230000023597 hemostasis Effects 0.000 title claims abstract description 95
- 238000000034 method Methods 0.000 title description 17
- 230000002439 hemostatic effect Effects 0.000 claims abstract description 84
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- 238000005381 potential energy Methods 0.000 claims abstract description 16
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- 239000008280 blood Substances 0.000 abstract description 5
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- 238000006243 chemical reaction Methods 0.000 description 8
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- 238000003860 storage Methods 0.000 description 6
- 238000002347 injection Methods 0.000 description 5
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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
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/01—Non-adhesive bandages or dressings
- A61F13/01021—Non-adhesive bandages or dressings characterised by the structure of the dressing
- A61F13/01029—Non-adhesive bandages or dressings characterised by the structure of the dressing made of multiple layers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/01—Non-adhesive bandages or dressings
- A61F13/01034—Non-adhesive bandages or dressings characterised by a property
- A61F13/01038—Flexibility, stretchability or elasticity
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/02—Adhesive bandages or dressings
- A61F13/0203—Adhesive bandages or dressings with fluid retention members
- A61F13/0206—Adhesive bandages or dressings with fluid retention members with absorbent fibrous layers, e.g. woven or non-woven absorbent pads or island dressings
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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
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Abstract
The invention discloses a foldable staggered elastic plate hemostasis structure with a guy cable and a hemostasis deviceThe blood material external application film and the self-adaptive elastic plate unfolding structure. The self-adaptive elastic plate unfolding structure consists of an elastic plate, a supporting rod and a pull rope. The elastic plates are fixed on the support rods, each layer is provided with two elastic plates, each layer of elastic plates is arranged according to a certain angle difference theta,
the geometric linearity of the elastic plate is involute, the base radius of the involute is R, and the hemostatic material external application film is fixed on the outer side of the elastic plate in a sticking way. The support rod consists of a scissor hinge unit and an elastic element. When the hemostatic structure is used, the hemostatic structure is injected into a wound, the inhaul cable is loosened, the elastic element releases elastic potential energy, and the support rod is driven to expand axially; the elastic plate releases elastic potential energy to expand along the radial direction, and drives the hemostatic material external application film to be attached to the wound surface, so that the rapid hemostasis function is realized.
Description
Technical Field
The invention relates to a through wound hemostasis structure, in particular to a foldable staggered elastic plate hemostasis structure with a guy cable, a hemostasis device and a hemostasis method.
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 self-adaptive elastic plate unfolding structure is compressed to store energy before use, the elastic plate releases elastic strain energy to unfold the self-adaptive elastic plate unfolding structure, the self-adaptive shape is realized according to the geometric shape of a wound, the pressure self-adaptation is realized according to the blood pressure and the elastic strain energy corresponding to the elastic release of human tissues, the hemostatic material outer coating film is driven to be attached to the wound surface, the rapid filling, the blood coagulation and the hemostasis are realized, and the life of a wounded soldier in battle is saved.
In order to achieve the purpose, the invention adopts the technical scheme that: a take collapsible staggered form elastic plate hemostasis structure of cable includes: the hemostatic material outer coating film (2), the staggered self-adaptive elastic plate unfolding structure (3) and the inhaul cable (6) are fixed to the outer end of the self-adaptive elastic plate unfolding structure (3) in a sticking mode, the inhaul cable (6) can control the staggered self-adaptive elastic plate unfolding structure (3) to release elastic potential energy to expand axially and radially, the hemostatic material outer coating film (2) is driven to be attached to the wound surface, and hemostasis is achieved.
The staggered self-adaptive elastic plate unfolding structure (3) consists of basic units of the self-adaptive elastic plate unfolding structure and supporting rods (5); basic units of the self-adaptive elastic plate unfolding structure are distributed in a layered mode, and each layer of basic unit of the self-adaptive elastic plate unfolding structure consists of an elastic plate and a supporting rod (5); one end of the elastic plate (4) is fixed on the support rod (5), and the other end is fixed on the hemostatic material external application film (2).
The number and the positions of the elastic plates (4) on the basic unit of the expansion structure of each layer of the self-adaptive elastic plate are different and are distributed in a staggered way.
The expansion structure of each layer of self-adaptive elastic plate is characterized in that the elastic plate (4) on the basic unit of the expansion structure of each layer of self-adaptive elastic plate is provided with n pieces, n is more than or equal to 1 and less than or equal to 2, and the elastic plates (4) are arranged according to a certain angle.
The angle of two elastic plates (4) which are arranged in two adjacent layers in the basic unit of the expansion structure of each layer of self-adaptive elastic plate and have the closest distance is theta, when the elastic plates (4) are curved surfaces, theta is defined as the included angle formed by the tangent lines of the projection curves from the two adjacent layers of elastic plates to the vertical plane of the supporting rod, the root is the contact point of the supporting rod (5) and the elastic plate (4),
the angle of two elastic plates (4) which are arranged in two adjacent layers in the basic unit of the expansion structure of the self-adaptive elastic plates in each layer and have the closest distance is set as theta, when the elastic plates (4) are in a plane, the theta is defined as the included angle formed by the projection from the two adjacent layers of the elastic plates to the vertical plane of the supporting rod,
the geometric line of the elastic plate (4) is an involute, and the base radius of the involute is R.
The supporting rod (5) consists of a scissor-type hinge unit (6), an elastic element (7) and a pin shaft (9),
the scissor hinge unit (6) consists of two rods (8); the two rod pieces (8) are hinged;
the hinge joint of the pin shaft (9) and the two rod pieces (8) is fixedly connected, and both ends of the pin shaft (9) can be connected with one end of the elastic plate (4);
two sides of the plane where the pin shaft (9) is located are respectively provided with an elastic element (7), two ends of each elastic element (7) are respectively connected to the end parts of two rod pieces (8) of the adjacent scissor hinge units (6), and the end parts of the two rod pieces (8) of the adjacent scissor hinge units (6) are hinged.
More than one stay cable is arranged on each elastic plate (4), one end of each stay cable is fixed on the elastic plate (4), and the other end of each stay cable is led out through the support rod (5).
Four pull cables (6) are arranged on each elastic plate (4), one end of each pull cable is fixed at the outer end of each elastic plate, one end of each second pull cable is fixed at the middle part of each elastic plate, and the other ends of the two pull cables are led out through the supporting rod units; the third guy cable and the fourth guy cable are respectively arranged symmetrically with the first guy cable and the second guy cable along the plane of the elastic plate (4).
A collapsible staggered elastic panel hemostasis device with a pull cord comprising: the syringe (1) and take the collapsible staggered form elastic plate hemostasis structure of cable, take the collapsible staggered form elastic plate hemostasis structure of cable to be located the syringe, syringe (1) can be with taking the collapsible staggered form elastic plate hemostasis structure of cable squeeze into in the wound of human tissue.
The front end of the syringe (1) is provided with a reaming blade (10) which can cut a wound to put a hemostatic device.
A hemostasis method of a foldable staggered elastic plate hemostasis device with a guy cable comprises the following steps:
1) at the wound of human tissue, the injector (1) drives the foldable staggered elastic plate hemostatic structure with the guy cable into the wound;
2) the inhaul cable (6) is loosened, the elastic plate (4) and the support rod (5) are unfolded under the action of elastic potential energy, the elastic plate (4) is unfolded along the radial direction, and the support rod (5) is unfolded along the axial direction.
3) The self-adaptive elastic plate unfolding structure (3) which is unfolded along the radial direction and the axial direction drives the hemostatic material external application film (2) to expand into a larger volume and generate extrusion force to human tissues.
4) According to the size of a cavity generated by the penetration injury, the self-adaptive elastic plate unfolding structure (3) drives the hemostatic material external application film (2) to form a shape consistent with the cavity, so that a bleeding point is propped against, and the hemostatic material external application film is attached to the wound surface to realize hemostasis.
Compared with the prior art, the invention has the advantages that:
(1) the geometric line of the elastic plate is an involute, and the base radius of the involute is R. Compared with an arc, the involute structure can provide larger reaction force in a contraction state, and has wider action range; compared with a straight line, the produced reaction is uniform, the motion path in the developing and contracting process is definite, the shape of the hemostatic material under uniform pressure can be ensured, and the hemostatic material can be in self-adaptive fit with the wound. One or two elastic plates are arranged on each layer, so that the interference between the elastic plates on the same layer can be reduced or avoided, the contraction radius of the elastic hemostasis structure is reduced, and the contraction rate of the elastic hemostasis structure is improved.
(2) The support rod of the invention consists of a scissor-type hinge unit and an elastic element. The scissor hinge unit is formed by hinging two rod pieces at the center through a pin shaft; the inner end of the elastic plate is fixed on the pin shaft; the rod pieces of the adjacent scissor hinge units are connected through connecting hinges, and two ends of the elastic element are respectively connected to the connecting hinges of the adjacent scissor hinge units. The scissor hinge unit can reduce the volume of the hemostasis structure and improve the storage capacity of the hemostasis device.
(3) The self-adaptive elastic plate unfolding structure is wrapped with the hemostatic material outer coating film, and the hemostatic material outer coating film is contacted with the wound surface and plays a pressing role by releasing elastic strain energy through the elastic plate, so that hemostasis and blood coagulation are realized.
(4) According to the invention, the elastic strain energy released by the elastic plate 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.
(5) The elastic plate can release corresponding strain energy according to the blood pressure and the elasticity of human tissues to balance with the strain energy, thereby meeting different requirements of the wound hemostasis pressure and having pressure self-adaptability.
(6) The invention drives the support rod to expand along the axial direction by releasing the elastic potential energy through the elastic element, thereby ensuring that the hemostatic structure has enough support area.
(7) The invention adopts an inflatable and elastic unfolding structure, can quickly expand and fill a penetrating wound, and has the effect of quick filling hemostasis compared with the prior methods of compression hemostasis, burning hemostasis, grease and gauze filling hemostasis and the like.
(8) The expansion structure has the characteristic of geometric shape self-adaption, is matched with the characteristic of blood absorption and expansion of the hemostatic material, has uniform pressure on the wound and good wound surface fitting performance.
(9) The invention can provide continuous extrusion force for the wound surface, the extrusion pressure can be adjusted, and the adjustment range is wide and can reach 0-16 kPa.
(10) The invention can be repeatedly unfolded and folded by using the inhaul cable to prevent wound tissue necrosis.
(11) The foldable and staggered elastic plate provided by the invention enables the supporting force to be more uniform and the expansion ratio of the supporting rod to be larger.
(12) The invention is convenient for storage and can be stored for a long time.
Description of the drawings:
FIG. 1 is a schematic view of a guyed foldable interleaved resilient plate hemostatic device (i.e., an injectable resilient plate hemostatic device) of the present invention;
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 view of the expanded structure of the adaptive elastic plate;
FIG. 5 is a view showing the construction of the elastic plate;
FIG. 6 is a view of the structure of the support bar;
FIG. 7 is a diagram of a scissor hinge unit of the support rod;
FIG. 8 is a connection diagram of adjacent support rod scissor hinge units;
FIG. 9 is a view of the hemostatic structure of the resilient plate in an initial contracted state;
FIG. 10 is a view of the hemostatic structure of the resilient plate in normal use;
FIG. 11 is a free-deployment view of the hemostatic structure of the resilient plate;
Detailed Description
The invention will be further described with reference to the following drawings and specific embodiments.
The invention discloses a foldable staggered elastic plate hemostasis structure with a guy cable and a hemostasis device. The self-adaptive elastic plate unfolding structure consists of an elastic plate, a supporting rod and a pull rope. The elastic plates are fixed on the support rods, each layer is provided with two elastic plates, each layer of elastic plates is arranged according to a certain angle difference theta,
the geometric linearity of the elastic plate is involute, the base radius of the involute is R, and the hemostatic material external application film is fixed on the outer side of the elastic plate in a sticking way. The support rod consists of a scissor hinge unit and an elastic element. When the hemostatic structure is used, the hemostatic structure is injected into a wound, the inhaul cable is loosened, the elastic element releases elastic potential energy, and the support rod is driven to expand axially; the elastic plate releases elastic potential energy to expand along the radial direction, and drives the hemostatic material external application film to be attached to the wound surface, so that the rapid hemostasis function is realized.
The invention relates to an elastic plate hemostasis structure, which comprises a hemostasis material external application film and is characterized by also comprising a self-adaptive elastic plate unfolding structure, wherein the self-adaptive elastic plate unfolding structure consists of an elastic plate, a supporting rod and a inhaul cable; the elastic plates are distributed in a layered mode, n pieces are arranged on each layer of elastic plates, wherein n is more than or equal to 1 and less than or equal to 2, the elastic plates are arranged according to a certain angle difference theta, and theta is more than or equal to pi/3 and less than or equal to pi/2; the inner end of the elastic plate is fixed on the support rod, and the hemostatic material external application film is fixed at the outer end of the elastic plate; one end of the inhaul cable is fixed on the elastic plate, and the other end of the inhaul cable is led out through the supporting rod.
The geometric line of the elastic plate is an involute, and the base radius of the involute is R. Compared with an arc, the involute structure can provide larger reaction force in a contraction state, and has wider action range; compared with a straight line, the produced reaction is uniform, the motion path in the developing and contracting process is definite, the shape of the hemostatic material under uniform pressure can be ensured, and the hemostatic material can be in self-adaptive fit with the wound. One or two elastic plates are arranged on each layer, so that the interference between the elastic plates on the same layer can be reduced or avoided, the contraction radius of the elastic hemostasis structure is reduced, and the contraction rate of the elastic hemostasis structure is improved.
The supporting rod consists of a scissor hinge unit and an elastic element. The scissor hinge unit is formed by hinging two rod pieces at the center through a pin shaft; the inner end of the elastic plate is fixed on the pin shaft; the rod pieces of the adjacent scissor hinge units are connected through connecting hinges, and two ends of the elastic element are respectively connected to the connecting hinges of the adjacent scissor hinge units. The scissor hinge unit can reduce the volume of the hemostasis structure and improve the storage capacity of the hemostasis device.
Four pull cables are arranged on each elastic plate, one end of one pull cable is fixed at the outer end of each elastic plate, one end of the other pull cable is fixed at the middle part of each elastic plate, the other ends of the two pull cables are led out through the supporting rod units, and the other two pull cables are symmetrically arranged.
The hemostatic material external application film is fixedly adhered to the outer end of the elastic plate.
The utility model provides an injection formula elastic plate 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 and a self-adaptive elastic plate unfolding structure, wherein the self-adaptive elastic plate unfolding structure consists of an elastic plate, a support rod and a pull rope; the elastic plates are distributed in a layered mode, n pieces are arranged on each layer of elastic plates, wherein n is more than or equal to 1 and less than or equal to 2, the elastic plates on each layer are arranged according to a certain angle difference theta,
the inner end of the elastic plate is fixed on the support rod, and the hemostatic material external application film is fixed at the outer end of the elastic plate; one end of the inhaul cable is fixed on the elastic plate, and the other end of the inhaul cable is led out through the supporting rod.
The front end of the syringe is provided with a reaming blade, and when the wound is small, the wound is cut to place the hemostatic device.
Through self-adaptation elastic plate development structure outsourcing hemostatic material overcoat membrane, rely on the elastic plate release elasticity strain energy to make hemostatic material overcoat membrane and wound surface of a wound contact and play the effect of pressing, realize hemostasis blood coagulation.
The elastic strain energy released by the elastic plate is matched with the flexibility of the hemostatic material external application film, so that the geometric adaptability of the penetrating wound can be realized, and the self-adaptive filling can be realized according to the shape of the wound.
The elastic plate 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 elastic plate has pressure self-adaptability.
The elastic potential energy released by the elastic element drives the supporting rod to unfold, thereby ensuring that the hemostatic structure has enough supporting area.
By stretching and releasing the pull cord, the contraction and expansion of the hemostatic structure may be controlled, facilitating injection and removal thereof during use.
The use scheme of the elastic plate hemostasis structure is as follows: the elastic plate hemostatic structure exists in a free expansion state, a normal use state and an initial contraction state. In the freely unfolded state, the elastic plate hemostasis structure is in a zero potential energy state; under the normal use state, the self-adaptive elastic plate unfolding 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 initial contraction state, the elastic plate hemostasis structure is stored in the injector. The production process is converted from a free unfolding state to an initial contraction state, the elastic plate hemostasis structure is stored in the injector, and the elastic plate is contracted and the supporting rod is folded to store elastic strain energy. The use process is that the initial contraction state is converted into the normal use state, the elastic plate hemostasis structure is injected into a wound through the injection device, when the wound is small, the wound is cut through the chambering blade at the front end of the injector, then the hemostasis structure is injected into the wound, the elastic element releases elastic potential energy, and the self-adaptive elastic plate unfolding structure is expanded along the axial direction; the elastic plate releases corresponding elastic strain energy according to the shape of the wound and the pressure applied to the elastic plate, so that the self-adaptive elastic plate unfolding structure is radially expanded, and the hemostatic material outer coating film is driven to be attached to the wound surface, thereby realizing the rapid hemostasis function and simultaneously meeting the self-adaptive requirements on the shape and the pressure. The taking-out process is converted from a normal use state to a free unfolding state, the elastic plate hemostatic structure is taken out from the wound after the hemostatic effect is achieved, and the elastic plate hemostatic structure automatically restores to a zero potential energy state.
As shown in figure 1, the injection type elastic plate hemostasis device is composed of an injector 1, a hemostasis material outer coating film 2 and an adaptive elastic plate unfolding structure 3. The syringe 1 has a reamer blade 11 at the front end to cut the wound for placement of 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 adaptive elastic plate unfolding structure 3 is composed of an elastic plate 4, a support rod 5 and a pull cable 6. The elastic plates 4 are distributed in a layered mode, 2 elastic plates are arranged on each layer, and the elastic plates on each layer are arranged according to the angle difference of 90 degrees. Two elastic plates are arranged on each layer, so that the interference between the elastic plates on the same layer can be reduced or avoided, the contraction radius of the elastic hemostasis structure is reduced, and the contraction rate of the elastic hemostasis structure is improved. The inner of elastic plate 4 is fixed on bracing piece 5, and every elastic plate 4 is retrained by four cable 6, and one end of cable is fixed the outer end of elastic plate, and two one ends of cable are fixed the middle part of elastic plate, the other end warp of two cable the bracing piece is drawn forth, other two cable symmetric arrangement. The hemostasis structure can be contracted and expanded by stretching and loosening the inhaul cable, and the injection and the extraction of the hemostasis structure are facilitated. The hemostatic material outer coating film is fixedly adhered to the outer end of the elastic plate.
As shown in fig. 5, the geometric line of the elastic plate 4 is an involute whose base radius is R. Compared with an arc, the involute structure can provide larger reaction force in a contraction state, and has wider action range; compare the straight line, the reaction of production is comparatively even, and it is comparatively clear and definite to develop and contract the motion route of process, can guarantee the shape under even pressure of hemostatic material, can carry out the self-adaptation cooperation with the wound, can realize self-adaptation according to the shape of wound and fill. As shown in fig. 6, the support bar is composed of a scissor-hinge unit 7 and an elastic member 8. As shown in fig. 7, the scissor hinge unit 7 is hinged at the center by two rods 9 via a pin 10, and the inner ends of the elastic plates are fixed to the pin 10. As shown in fig. 8, the rods 9 of adjacent scissor units are connected by a connecting hinge, and both ends of the elastic element 8 are respectively connected to the connecting hinges of the adjacent scissor units 7. The scissor hinge unit can reduce the volume of the hemostasis structure and improve the storage capacity of the hemostasis device.
The production and use processes of the elastic plate hemostasis structure are as follows: during production, the inhaul cable 6 is tensioned and fixed, the hemostatic material coating film is wrapped outside the self-adaptive elastic plate unfolding structure and is stored in the injector together, at the moment, the elastic plate 4 and the elastic element 8 store elastic potential energy, and the elastic plate hemostatic structure is in an initial contraction state (as shown in fig. 9). When the self-adaptive elastic plate unfolding structure is used, the elastic plate unfolding structure is injected into a wound, when the wound is small, the wound is cut through a chambering blade at the front end of an injector, then the hemostatic structure is injected into the wound, the inhaul cable 6 is loosened, and the elastic element 8 releases elastic potential energy, so that the self-adaptive elastic plate unfolding structure is expanded along the axial direction; the elastic plate 4 releases elastic potential energy to enable the self-adaptive elastic plate to expand along the radial direction. As shown in fig. 10, the elastic plate hemostatic structure is in a normal use state, the elastic plate 4 releases corresponding elastic strain energy according to the shape of the wound and the pressure applied thereto, and the self-adaptive elastic plate unfolding structure expands in the radial direction to drive the hemostatic material outer coating film 2 to be attached to the wound surface, so that a rapid hemostatic function is realized, and the self-adaptive requirements on shape and pressure can be met. After the hemostatic effect is achieved, the stay cable is tensioned, the elastic plate hemostatic structure is taken out from the wound, the stay cable is loosened, and the elastic plate hemostatic structure automatically recovers to a free expansion state. As shown in fig. 11, the hemostatic structure of the elastic plate is in a freely deployed state, and the elastic strain energy thereof is zero.
The preferred scheme is as follows: when the hemostatic dressing membrane is arranged in an injector, the diameter of the hemostatic dressing membrane is 10 cm-12 cm, the height of the hemostatic dressing membrane is 13 cm-15 cm, the width of the elastic plate is 0.3 cm-0.5 cm, the unfolding length of the elastic plate is 13 mm-15 cm, and the thickness of the elastic plate is 0.2 mm-0.3 mm; the length of the support rod unit is preferably 13-15 cm, and the length of the support rod unit is preferably 13-15 cm, so that the hemostatic effect is better;
the further preferred scheme is as follows: the hemostatic outer dressing film is preferably 12cm in diameter, 15cm in height, 0.5cm in width of the elastic plate, 14cm in unfolding length, 0.3mm in thickness, 15cm in length of the support rod unit and 2cm in inner diameter of the injector, is preferably suitable for a penetrating wound with a wound maximum envelope (when the wound is irregular in shape, the maximum envelope is an excircle of the wound) diameter within 10cm, and has the best hemostatic effect.
The penetration wound with the maximum enveloping diameter of the wound being more than 10cm can be realized by adjusting the length and the material of the elastic plate.
The elastic modulus of the elastic material adopted by the elastic plate is preferably in a range of 50-150 Gpa, so that the hemostatic effect is satisfied and the proper acting force is provided for penetrating the wound.
The invention adopts an inflatable and elastic unfolding structure, can quickly expand and fill a penetrating wound, and has the effect of quick filling hemostasis compared with the prior methods of compression hemostasis, burning hemostasis, grease and gauze filling hemostasis and the like. The expansion structure has the characteristic of geometric shape self-adaption, is matched with the characteristic of blood absorption and expansion of the hemostatic material, has uniform pressure on the wound and good wound surface fitting performance. The invention can provide continuous extrusion force for the wound surface, the extrusion pressure can be adjusted, and the adjustment range can reach 0-16 kPa. The invention expands after extrusion, and the reaction speed is high. The foldable and staggered elastic plate provided by the invention enables the supporting force to be more uniform and the expansion ratio of the supporting rod to be larger. The invention is convenient for storage and can be stored for a long time.
The geometric line of the elastic plate is an involute, and the base radius of the involute is R. Compared with an arc, the involute structure can provide larger reaction force in a contraction state, and has wider action range; compared with a straight line, the produced reaction is uniform, the motion path in the developing and contracting process is definite, the shape of the hemostatic material under uniform pressure can be ensured, and the hemostatic material can be in self-adaptive fit with the wound. One or two elastic plates are arranged on each layer, so that the interference between the elastic plates on the same layer can be reduced or avoided, the contraction radius of the elastic hemostasis structure is reduced, and the contraction rate of the elastic hemostasis structure is improved.
The support rod of the invention consists of a scissor-type hinge unit and an elastic element. The scissor hinge unit is formed by hinging two rod pieces at the center through a pin shaft; the inner end of the elastic plate is fixed on the pin shaft; the rod pieces of the adjacent scissor hinge units are connected through connecting hinges, and two ends of the elastic element are respectively connected to the connecting hinges of the adjacent scissor hinge units. The scissor hinge unit can reduce the volume of the hemostasis structure and improve the storage capacity of the hemostasis device. The self-adaptive elastic plate unfolding structure is wrapped with the hemostatic material outer coating film, and the hemostatic material outer coating film is contacted with the wound surface and plays a pressing role by releasing elastic strain energy through the elastic plate, so that hemostasis and blood coagulation are realized.
According to the invention, the elastic strain energy released by the elastic plate 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 elastic plate can release corresponding strain energy according to the blood pressure and the elasticity of human tissues to balance with the strain energy, thereby meeting different requirements of the wound hemostasis pressure and having pressure self-adaptability. The invention drives the support rod to expand along the axial direction by releasing the elastic potential energy through the elastic element, thereby ensuring that the hemostatic structure has enough support area.
Claims (11)
1. The utility model provides a take collapsible staggered form elastic plate hemostasis structure of cable which characterized in that includes: the hemostatic material outer coating film (2), the staggered self-adaptive elastic plate unfolding structure (3) and the inhaul cable (6), wherein the hemostatic material outer coating film (2) is fixedly adhered to the outer end of the staggered self-adaptive elastic plate unfolding structure (3), and the inhaul cable (6) can control the staggered self-adaptive elastic plate unfolding structure (3) to release elastic potential energy to expand along the axial direction and the radial direction, so that the hemostatic material outer coating film (2) is driven to be attached to a wound surface, and hemostasis is realized;
the staggered self-adaptive elastic plate unfolding structure (3) consists of basic units of the self-adaptive elastic plate unfolding structure and supporting rods (5); basic units of the self-adaptive elastic plate unfolding structure are distributed in a layered mode, and each layer of basic unit of the self-adaptive elastic plate unfolding structure consists of an elastic plate and a supporting rod (5); one end of the elastic plate (4) is fixed on the support rod (5), and the other end is fixed on the hemostatic material external application film (2).
2. The foldable staggered elastic plate hemostasis structure with guy cables of claim 1, wherein: the number and the positions of the elastic plates (4) on the basic unit of the expansion structure of each layer of the self-adaptive elastic plate are different and are distributed in a staggered way.
3. The foldable staggered elastic plate hemostasis structure with guy cables of claim 1, wherein: the expansion structure of each layer of self-adaptive elastic plate is characterized in that the elastic plate (4) on the basic unit of the expansion structure of each layer of self-adaptive elastic plate is provided with n pieces, n is more than or equal to 1 and less than or equal to 2, and the elastic plates (4) are arranged according to a certain angle.
4. The foldable staggered elastic plate hemostasis structure with guy cables of claim 1, wherein: the angle of two elastic plates (4) which are arranged in two adjacent layers in the basic unit of the expansion structure of each layer of self-adaptive elastic plate and have the closest distance is theta, when the elastic plates (4) are curved surfaces, theta is defined as the included angle formed by the tangent lines of the projection curves from the two adjacent layers of elastic plates to the vertical plane of the supporting rod, the root is the contact point of the supporting rod (5) and the elastic plate (4),
5. the foldable staggered elastic plate hemostasis structure with guy cables of claim 1, wherein: the angle of two elastic plates (4) which are arranged in two adjacent layers in the basic unit of the expansion structure of the self-adaptive elastic plates in each layer and have the closest distance is set as theta, when the elastic plates (4) are in a plane, the theta is defined as the included angle formed by the projection from the two adjacent layers of the elastic plates to the vertical plane of the supporting rod,
6. the foldable staggered elastic plate hemostasis structure with guy cables of claim 1, wherein: the geometric line of the elastic plate (4) is an involute.
7. The foldable staggered elastic plate hemostasis structure with guy cables of claim 1, wherein: the supporting rod (5) consists of a scissor-type hinge unit (6), an elastic element (7) and a pin shaft (9),
the scissor hinge unit (6) consists of two rods (8); the two rod pieces (8) are hinged;
the hinge joint of the pin shaft (9) and the two rod pieces (8) is fixedly connected, and both ends of the pin shaft (9) can be connected with one end of the elastic plate (4);
two sides of the plane where the pin shaft (9) is located are respectively provided with an elastic element (7), two ends of each elastic element (7) are respectively connected to the end parts of two rod pieces (8) of the adjacent scissor hinge units (6), and the end parts of the two rod pieces (8) of the adjacent scissor hinge units (6) are hinged.
8. The foldable staggered elastic plate hemostasis structure with guy cables of claim 1 or 2, wherein: more than one stay cable is arranged on each elastic plate (4), one end of each stay cable is fixed on the elastic plate (4), and the other end of each stay cable is led out through the support rod (5).
9. The foldable staggered elastic plate hemostasis structure with guy cables of claim 1 or 2, wherein: four pull cables (6) are arranged on each elastic plate (4), one end of each pull cable is fixed at the outer end of each elastic plate, one end of each second pull cable is fixed at the middle part of each elastic plate, and the other ends of the two pull cables are led out through a supporting rod unit; the third guy cable and the fourth guy cable are respectively arranged symmetrically with the first guy cable and the second guy cable along the plane of the elastic plate (4).
10. A collapsible staggered elastic panel hemostasis device with a pull cord comprising: the injector (1) and the foldable staggered elastic plate hemostasis structure with the guy cable as claimed in any one of claims 1 to 9, wherein the foldable staggered elastic plate hemostasis structure with the guy cable is positioned in the injector, and the injector (1) can drive the foldable staggered elastic plate hemostasis structure with the guy cable into a wound of human tissue.
11. The apparatus of claim 10, wherein the at least one elastic panel is a foldable cross-over elastic panel with a pull string, the apparatus further comprising: the front end of the syringe (1) is provided with a reaming blade (10) which can cut a wound to put a hemostatic device.
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