CN109091188B - A foldable staggered elastic plate hemostatic structure with a pull cable and a hemostatic device and method - Google Patents

Abstract

The invention discloses a foldable interlaced elastic plate hemostasis structure with a pull cable and a hemostasis device. The self-adaptive elastic plate deployment structure consists of elastic plates, support rods and cables. The elastic plate is fixed on the support rod, and each layer has two elastic plates, and the elastic plates of each layer are arranged according to a certain angle difference θ.

The geometrical linearity of the elastic plate is an involute, the radius of the base circle of the involute is R, and the external coating film of the hemostatic material is pasted and fixed on the outer side of the elastic plate. The support rod is composed of a scissor hinge unit and an elastic element. When in use, inject the hemostatic structure into the wound, release the cable, the elastic element releases elastic potential energy, and drives the support rod to expand in the axial direction; the elastic plate releases the elastic potential energy to expand in the radial direction, and drives the external application film of the hemostatic material to fit the wound surface, To achieve rapid hemostasis.

Description

A foldable staggered elastic plate hemostatic structure with a cable and a hemostatic device and the same method

technical field

The invention relates to a penetrating wound hemostasis structure, in particular to a foldable interlaced elastic plate hemostasis structure with a cable, a hemostasis device and a method.

Background technique

Existing hemostasis treatments for penetrating wounds in the battlefield mainly use compression hemostasis, burning hemostasis, oil and gauze filling to stop bleeding, etc. These conventional hemostasis methods are far from meeting the first aid requirements for penetrating wounds and hemostasis due to the limitations of wartime conditions or treatment effects. There is an urgent need to develop a new hemostasis method and device to fill the gap. RevMedx, a medical technology company in Oregon, USA, has developed a syringe-like medical device called "XStat" that contains tiny cotton wool that could change the way medics treat gunshot wounds and shrapnel wounds. When using, the military doctor injects dozens of pill-shaped micro cotton wool into the wound, and the cotton wool is treated with chitosan. Chitosan is able to clot blood and fight infection. In seconds, the cotton wool expands tenfold, closing the wound and stopping the bleeding. However, this method of relying on blood-sucking and swelling to stop bleeding is very dangerous for the wounded who suffer from massive bleeding on the battlefield, and after the material expands, its strength becomes weaker, making it difficult to provide continuous squeezing force to the wound surface, and its function needs to be further improved.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to design a penetrating wound hemostasis structure with shape and pressure adaptability in view of the above-mentioned deficiencies in the prior art. To this end, the present invention sticks a hemostatic material external coating film on the surface of the self-adaptive elastic plate deployment structure, compresses the self-adaptive elastic plate deployment structure to store energy before use, and releases the elastic strain through the elastic plate during use to enable the self-adaptive elastic plate deployment structure Unfolding, and according to the corresponding deformation of the wound geometry to achieve shape self-adaptation, according to blood pressure and the elasticity of human tissue to release the corresponding elastic strain energy to achieve pressure self-adaptation, drive the external application of hemostatic material to make it fit the wound surface, and achieve rapid filling and coagulation. , stop bleeding and save the lives of soldiers wounded in battle.

In order to achieve the above purpose, the technical solution adopted in the present invention is: a foldable interlaced elastic plate hemostatic structure with a pulling cable, comprising: a hemostatic material external coating film (2), a staggered self-adaptive elastic plate unfolding structure (3) and a cable (6), the hemostatic material outer coating film (2) is pasted and fixed on the outer end of the self-adaptive elastic plate deployment structure (3), and the cable (6) can control the staggered self-adaptive elastic plate deployment structure (3) The elastic potential energy is released to expand in the axial direction and the radial direction, and the external coating film (2) of the hemostatic material is driven to fit the wound surface to achieve hemostasis.

The staggered self-adaptive elastic plate deployment structure (3) is composed of basic units of the self-adaptive elastic plate deployment structure and support rods (5); the basic units of the self-adaptive elastic plate deployment structure are distributed in layers, and each layer of self-adaptive elastic plates The basic unit of the deployment structure is composed of an elastic plate and a support 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 coating film (2).

There are n pieces of elastic plates (4) on the basic unit of each layer of the self-adaptive elastic plate unfolding structure, and the number and position of the elastic plates (4) on the basic unit of each layer of the self-adapting elastic plate unfolding structure are different and distributed staggered.

There are n pieces of elastic boards (4) on the basic unit of the self-adaptive elastic board unfolding structure of each layer, 1≤n≤2, and the elastic boards (4) of each layer are arranged according to a certain angle.

Let the angle of the two adjacent layers (4) with the closest distance in the basic unit of the self-adaptive elastic plate unfolding structure of each layer be θ. When the elastic plate (4) is a curved surface, θ is defined as the adjacent two layers. The angle formed by the tangent of the root of the projection curve of the elastic plate to the vertical plane of the support rod, the root refers to the contact point between the support rod (5) and the elastic plate (4),

Let the angle of the two adjacent elastic plates (4) with the closest distance in the basic unit of the self-adaptive elastic plate unfolding structure of each layer be θ. When the elastic plate (4) is a plane, θ is defined as the adjacent two layers. The angle formed by the projection of the elastic plate to the vertical plane of the support rod,

The geometrical shape of the elastic plate (4) is an involute, and the radius of the base circle of the involute is R.

The support rod (5) is composed of a scissor hinge unit (6), an elastic element (7), and a pin shaft (9),

The scissor hinge unit (6) consists of two rods (8); the two rods (8) are hinged;

The pin shaft (9) is fixedly connected to the hinge joint of the two rods (8), and both ends of the pin shaft (9) can be connected to one end of the elastic plate (4);

An elastic element (7) is provided on both sides of the plane where the pin shaft (9) is located, and both ends of the elastic element (7) are respectively connected to the ends of the two rods (8) of the adjacent scissor hinge units (6). , the ends of the two rods (8) of the two adjacent scissor hinge units (6) are hinged.

Each elastic plate (4) is provided with more than one cable, one end of the cable is fixed on the elastic plate (4), and the other end of the cable is led out through the support rod (5).

Each elastic plate (4) is provided with four cables (6), one end of one cable is fixed at the outer end of the elastic plate, and one end of the second cable is fixed at the middle of the elastic plate , the other ends of the two cables are drawn out through the support rod unit; the third cable and the fourth cable are respectively connected with the first cable and the second cable along the plane where the elastic plate (4) is located. Symmetrical arrangement.

A foldable staggered elastic plate hemostatic device with a pull cable, comprising: a syringe (1) and the foldable staggered elastic plate hemostatic structure with a pull cable, the foldable staggered elastic plate hemostatic structure with a pull cable Located in the syringe, the syringe (1) can drive the foldable interlaced elastic plate hemostatic structure with a pulling cable into the wound of the human tissue.

There is a reaming blade (10) at the front end of the syringe (1), which can cut the wound and put in the hemostatic device.

A method for hemostasis of a foldable staggered elastic plate hemostatic device with a cable, the steps are as follows:

1) at the wound of human tissue, the described foldable staggered elastic plate hemostatic structure with pull cable is driven into the wound by the syringe (1);

2) Loosen the cable (6), the elastic plate (4) and the support rod (5) are deployed under the action of elastic potential energy, the elastic plate (4) is deployed in the radial direction, and the supporting rod (5) is deployed in the axial direction.

3) The self-adaptive elastic plate unfolding structure (3) extended in the radial direction and the axial direction drives the hemostatic material outer coating film (2) to expand into a larger volume, and generates a pressing force on the human tissue.

4) According to the size of the cavity generated by the penetrating injury, the self-adaptive elastic plate unfolding structure (3) drives the hemostatic material external coating film (2) to form a shape consistent with the cavity, so as to withstand the bleeding point, and the hemostatic material external coating film adheres to the wound surface, achieve hemostasis.

The advantages of the present invention relative to the prior art are:

(1) The geometry of the elastic plate of the present invention is an involute, and the radius of the base circle of the involute is R. Compared with the arc, the involute structure can provide a larger reaction force in the shrinking state, and the effect is wider; The shape of the hemostatic material under uniform pressure can adapt to the wound. One or two elastic plates are arranged on each layer, which can reduce or avoid the interference between the elastic plates of the same layer, reduce the shrinkage radius of the elastic hemostatic structure, and improve its shrinkage rate.

(2) The support rod of the present invention is composed of a scissor hinge unit and an elastic element. The scissor hinge unit is hingedly connected by two rods in the center through a pin; the inner end of the elastic plate is fixed on the pin; the rods of the adjacent scissor hinge units are connected by a connecting hinge, and both ends of the elastic element They are respectively connected to the connecting hinges of adjacent scissor hinge units. The scissor hinge unit can reduce the volume of the hemostatic structure and improve the storage capacity of the hemostatic device.

(3) The present invention wraps the hemostatic material overcoat film through the self-adaptive elastic plate unfolding structure, and relies on the elastic plate to release the elastic strain to make the hemostatic material overcoat film contact with the wound surface and play a pressing role to achieve hemostasis and coagulation.

(4) The present invention can realize the geometrical adaptability to the penetrating wound by releasing the elastic strain energy of the elastic plate and the flexibility of the external coating film of the hemostatic material, and can realize self-adaptive filling according to the shape of the wound.

(5) The elastic plate of the present invention can release the corresponding strain energy according to the blood pressure and the elasticity of the human body tissue to balance it, so as to meet the needs of different wound hemostasis pressure, and has pressure adaptability.

(6) In the present invention, the elastic element releases elastic potential energy to drive the support rod to expand in the axial direction, thereby ensuring that the hemostatic structure has a sufficient support area.

(7) The present invention adopts an inflatable and elastic deployment structure, which can quickly expand and fill the penetrating wound. Compared with the existing methods such as compression hemostasis, burning hemostasis, oil and gauze filling hemostasis, etc., it has the effect of rapid filling and hemostasis.

(8) The unfolded structure of the present invention has the characteristics of self-adaptive geometric shape, and cooperates with the blood-sucking and expanding characteristics of the hemostatic material, so that the pressure on the wound is uniform and the wound surface is well fitted.

(9) The present invention can provide continuous squeezing force to the wound surface, the squeezing pressure can be adjusted, and the adjustment range is large, which can reach 0-16kPa.

(10) In the present invention, the cable can be used to repeatedly unfold and fold to prevent wound tissue from necrosis.

(11) The foldable and staggered elastic plates of the present invention make the support force more uniform and the expansion ratio of the support rods larger.

(12) The present invention is easy to store and can be stored for a long time.

Description of drawings:

1 is a schematic diagram of a foldable interlaced elastic plate hemostatic device (ie, an injectable elastic plate hemostatic device) with a cable according to the present invention;

Fig. 2 is a diagram of the initial folding state of the external coating film of hemostatic material;

Figure 3 is a state diagram of the external application of hemostatic material when the film is used;

Fig. 4 is the self-adaptive elastic plate unfolding structure diagram;

Figure 5 is a structural diagram of an elastic plate;

Figure 6 is a structural diagram of a support rod;

Figure 7 is a diagram of a support rod scissor hinge unit;

Figure 8 is a connection diagram of adjacent support rod scissor hinge units;

Figure 9 is a diagram of the initial contraction state of the elastic plate hemostatic structure;

Figure 10 is a diagram of the normal use state of the elastic plate hemostatic structure;

Fig. 11 is a diagram showing the free deployment state of the elastic plate hemostatic structure;

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

弹性板的几何线性为渐开线，渐开线基圆半径为R，止血材料外敷膜粘贴固定在弹性板的外侧。支撑杆由剪式铰单元和弹性元件组成。使用时将止血结构注射到伤口中，松开拉索，弹性元件释放弹性势能，驱动支撑杆沿轴向展开；弹性板释放弹性势能沿径向扩展，驱动止血材料外敷膜使其贴合创面，从而实现快速止血功能。The invention discloses a foldable interlaced elastic plate hemostatic structure with a cable and a hemostatic device. The self-adaptive elastic plate deployment structure consists of elastic plates, support rods and cables. The elastic plate is fixed on the support rod, and each layer has two elastic plates, and the elastic plates of each layer are arranged according to a certain angle difference θ.

The geometrical linearity of the elastic plate is an involute, the radius of the base circle of the involute is R, and the external coating film of the hemostatic material is pasted and fixed on the outer side of the elastic plate. The support rod is composed of a scissor hinge unit and an elastic element. When in use, inject the hemostatic structure into the wound, release the cable, the elastic element releases elastic potential energy, and drives the support rod to expand in the axial direction; the elastic plate releases the elastic potential energy to expand in the radial direction, and drives the external application film of the hemostatic material to fit the wound surface, To achieve rapid hemostasis.

The present invention is an elastic plate hemostatic structure, comprising an external coating film of hemostatic material, and is characterized in that, it also includes an adaptive elastic plate deployment structure, and the adaptive elastic plate deployment structure is composed of an elastic plate, a support rod and a cable. The elastic plates are distributed in layers, and each layer of the elastic plates has n pieces, wherein 1≤n≤2, and the elastic plates of each layer are arranged according to a certain angle difference θ, π/3≤θ≤π/ 2; the inner end of the elastic plate is fixed on the support rod, and the outer coating film of hemostatic material is fixed on the outer end of the elastic plate; one end of the cable is fixed on the elastic plate, and the other end of the cable passes through the elastic plate; The support rod is drawn out.

The geometrical line type of the elastic plate is an involute, and the radius of the base circle of the involute is R. Compared with the arc, the involute structure can provide a larger reaction force in the shrinking state, and the effect is wider; The shape of the hemostatic material under uniform pressure can adapt to the wound. One or two elastic plates are arranged on each layer, which can reduce or avoid the interference between the elastic plates of the same layer, reduce the shrinkage radius of the elastic hemostatic structure, and improve its shrinkage rate.

The support rod is composed of a scissor hinge unit and an elastic element. The scissor hinge unit is hingedly connected by two rods in the center through a pin; the inner end of the elastic plate is fixed on the pin; the rods of the adjacent scissor hinge units are connected by a connecting hinge, and both ends of the elastic element They are respectively connected to the connecting hinges of adjacent scissor hinge units. The scissor hinge unit can reduce the volume of the hemostatic structure and improve the storage capacity of the hemostatic device.

Each elastic plate is provided with four cables, one end of one cable is fixed at the outer end of the elastic plate, one end of the other cable is fixed at the middle of the elastic plate, and two cables are fixed at the middle of the elastic plate. The other end of the cable is led out through the support rod unit, and the other two cables are arranged symmetrically.

The external coating film of the hemostatic material is pasted and fixed on the outer end of the elastic plate.

所述弹性板的内端固定在所述支撑杆上，止血材料外敷膜固定在弹性板的外端；所述拉索一端固定在所述弹性板上，拉索的另一端经所述支撑杆引出。An injection-type elastic plate hemostatic device, comprising a syringe and a hemostatic structure inside the syringe, characterized in that: the hemostatic structure includes a hemostatic material outer coating film and an adaptive elastic plate deployment structure, the adaptive elastic plate deployment structure is composed of The elastic plate is composed of an elastic plate, a support rod and a cable; the elastic plate is distributed in layers, and each layer of the elastic plate has n pieces, where 1≤n≤2, and the elastic plates of each layer are arranged according to a certain angle difference θ,

The inner end of the elastic plate is fixed on the support rod, and the external coating film of hemostatic material is fixed on the outer end of the elastic plate; one end of the cable is fixed on the elastic plate, and the other end of the cable passes through the support rod lead out.

There is a reaming blade at the front end of the syringe, and when the wound is small, the wound is cut to put the hemostatic device.

The self-adaptive elastic plate deployment structure is used to wrap the hemostatic material external coating film, and the hemostatic material external coating film can be brought into contact with the wound wound surface by means of the elastic plate releasing elastic strain and play a pressing role, so as to achieve hemostasis and coagulation.

The elastic strain released by the elastic plate and the flexibility of the hemostatic material externally applied film can realize the geometrical adaptability to the penetrating wound, and can realize adaptive filling according to the shape of the wound.

The elastic plate can release the corresponding strain energy according to the blood pressure and the elasticity of human tissue to balance it, so as to meet the needs of different wound hemostasis pressure, and has pressure adaptability.

The elastic potential energy is released by the elastic element to drive the support rod to unfold, thereby ensuring that the hemostatic structure has a sufficient support area.

By tensioning and relaxing the cable, the contraction and deployment of the hemostatic structure can be controlled to facilitate injection and removal during its use.

The usage plan of the elastic plate hemostatic structure is as follows: the elastic plate hemostatic structure has a free expansion state, a normal use state and an initial contraction state. In the free expansion state, the elastic plate hemostatic structure is in a state of zero potential energy; in the normal use state, the adaptive elastic plate expansion structure deforms correspondingly according to the shape of the wound, so that the external application film of the hemostatic material is close to the wound surface; the In the initial contracted state of , the elastic plate hemostatic structure is stored in the syringe. The production process is transformed from the freely unfolded state to the initial contracted state, the elastic plate hemostatic structure is stored in the syringe, the elastic plate is contracted, and the support rod is folded to store elastic strain energy. The use process is transformed from the initial contraction state to the normal use state. The elastic plate hemostatic structure is injected into the wound through the injection device. When the wound is small, the wound is first cut through the reaming blade at the front of the syringe, and then the hemostatic structure is injected into the wound. The elastic element releases elastic potential energy to expand the self-adaptive elastic plate deployment structure in the axial direction; the elastic plate releases corresponding elastic strain energy according to the shape of the wound and the pressure received, so that the self-adaptive elastic plate deployment structure expands in the radial direction, driving The hemostatic material is applied externally to make it fit the wound surface, so as to realize the rapid hemostasis function, and at the same time, it can also meet the requirements of shape and pressure adaptation. The removal process is transformed from the normal use state to the free deployment state, and after the hemostatic effect is achieved, the elastic plate hemostatic structure is removed from the wound, and it automatically returns to the zero potential energy state.

As shown in FIG. 1 , the injectable elastic plate hemostatic device is composed of a syringe 1 , a hemostatic material external coating film 2 and an adaptive elastic plate deployment structure 3 . There is a reaming blade 11 at the front end of the syringe 1, and when the wound is small, the wound is cut to put the hemostatic device. Figures 2 and 3 show the initial folded state and the state of use of the hemostatic material overcoating film 2, respectively. The hemostatic material overcoating film 2 has a certain flexibility and can swell in the presence of blood (water). As shown in FIG. 4 , the adaptive elastic plate deployment structure 3 is composed of an elastic plate 4 , a support rod 5 and a cable 6 . The elastic plates 4 are distributed in layers, there are two elastic plates in each layer, and the elastic plates of each layer are arranged according to an angle difference of 90°. Two elastic plates are arranged on each layer, which can reduce or avoid the interference between the elastic plates of the same layer, reduce the shrinkage radius of the elastic hemostatic structure, and improve its shrinkage rate. The inner end of the elastic plate 4 is fixed on the support rod 5, and each elastic plate 4 is restrained by four cables 6, one end of the cable is fixed on the outer end of the elastic plate, and the second end of the cable is fixed at the outer end of the elastic plate. In the middle of the elastic plate, the other ends of the two stay cables are drawn out through the support rod, and the other two stay cables are arranged symmetrically. The hemostatic structure can be contracted and expanded by tensioning and releasing the cable, which facilitates the injection and removal of the hemostatic structure. The hemostatic material outer coating film is fixed and pasted on the outer end of the elastic plate.

As shown in FIG. 5 , the geometry of the elastic plate 4 is an involute, and the radius of the base circle of the involute is R. Compared with the arc, the involute structure can provide a larger reaction force in the shrinking state, and the effect is wider; The shape of the hemostatic material under uniform pressure can be adaptively matched with the wound, and adaptive filling can be achieved according to the shape of the wound. As shown in FIG. 6 , the support rod is composed of a scissor hinge unit 7 and an elastic element 8 . As shown in FIG. 7 , the scissor hinge unit 7 is hingedly connected by two rods 9 in the center through a pin shaft 10 , and the inner end of the elastic plate is fixed on the pin shaft 10 . As shown in FIG. 8 , the rods 9 of the adjacent scissor hinge units are connected by connecting hinges, and the two ends of the elastic element 8 are respectively connected to the connecting hinges of the adjacent scissor hinge units 7 . The scissor hinge unit can reduce the volume of the hemostatic structure and improve the storage capacity of the hemostatic device.

The production and use process of the elastic plate hemostatic structure is as follows: during production, the tension cable 6 is tightened and fixed, and the outer coating film of the hemostatic material is wrapped around the outside of the adaptive elastic plate deployment structure and stored in the syringe together. At this time, the elastic plate 4 and the elastic element 8 The elastic potential energy is stored, and the elastic plate hemostatic structure is in the initial contracted state (as shown in Figure 9). When in use, the elastic plate hemostatic structure is injected into the wound. When the wound is small, the wound is first cut through the reaming blade at the front end of the syringe, and then the hemostatic structure is injected into the wound, loosening the cable 6, and the elastic element 8 releases the elastic potential energy to make the wound. The self-adaptive elastic plate unfolding structure expands in the axial direction; the release of the elastic potential of the elastic plate 4 enables the self-adaptive elastic plate to expand in the radial direction. As shown in Figure 10, the elastic plate hemostatic structure is in normal use, the elastic plate 4 releases the corresponding elastic strain energy according to the shape of the wound and the pressure received, and the adaptive elastic plate unfolding structure expands in the radial direction, driving the external application of the hemostatic material The membrane 2 makes it fit the wound surface, so as to realize the function of rapid hemostasis, and at the same time, it can also meet the requirements of shape and pressure adaptation. After the hemostatic effect is achieved, the pull cable is tightened, the elastic plate hemostatic structure is taken out from the wound, the pull cable is loosened, and the elastic plate hemostatic structure automatically returns to a free expansion state. As shown in FIG. 11 , the elastic plate hemostatic structure is in a freely deployed state, and its elastic strain energy is zero.

The preferred solution is: when in the syringe, the diameter of the hemostatic coating is 10cm-12cm, the height is 13cm-15cm, the width of the elastic plate is 0.3cm-0.5cm, the unfolded length is 13mm-15cm, and the thickness is 0.2mm-0.3mm; The length of the rod unit is preferably 13-15cm, and the length of the support rod unit is preferably 13-15cm, so that the hemostatic effect is better;

A further preferred solution is: the hemostatic outer coating film preferably has a diameter of 12cm, and a height of 15cm, and the elastic plate width is 0.5cm, and the unfolded length is 14cm, and the thickness is 0.3mm, the length of the support rod unit is 15cm, and the inner diameter of the syringe is 2cm, preferably It is suitable for penetrating wounds within 10cm in diameter of the largest wound envelope (when the wound is irregular in shape, the largest envelope is the circumscribed circle of the wound), and the hemostatic effect is the best.

Penetration wounds with a maximum wound envelope diameter of more than 10 cm can be achieved by adjusting the length and material of the elastic plate.

The elastic modulus of the elastic material used in the elastic plate is preferably in the range of 50-150 Gpa, so as to satisfy the hemostatic effect and provide an appropriate force to the penetrating wound at the same time.

The invention adopts an inflatable and elastic unfolding structure, which can rapidly expand and fill the penetrating wound, and has the effect of rapid filling and hemostasis compared with the existing methods such as compression hemostasis, burning hemostasis, oil and gauze filling hemostasis and the like. The unfolded structure of the present invention has the characteristics of self-adaptive geometric shape, and is matched with the blood-sucking and expanding characteristics of the hemostatic material, so that the pressure on the wound is uniform and the wound surface is well fitted. The invention can provide continuous pressing force to the wound surface, the pressing pressure can be adjusted, and the adjustment range can be as large as 0-16 kPa. The invention expands after being squeezed, and the reaction speed is fast. The foldable and staggered elastic plates of the present invention make the support force more uniform and the expansion ratio of the support rods larger. The invention is convenient for storage and can be stored for a long time.

The geometrical type of the elastic plate of the present invention is an involute, and the radius of the base circle of the involute is R. Compared with the arc, the involute structure can provide a larger reaction force in the shrinking state, and the effect is wider; The shape of the hemostatic material under uniform pressure can adapt to the wound. One or two elastic plates are arranged on each layer, which can reduce or avoid the interference between the elastic plates of the same layer, reduce the shrinkage radius of the elastic hemostatic structure, and improve its shrinkage rate.

The support rod of the present invention is composed of a scissor hinge unit and an elastic element. The scissor hinge unit is hingedly connected by two rods in the center through a pin; the inner end of the elastic plate is fixed on the pin; the rods of the adjacent scissor hinge units are connected by a connecting hinge, and both ends of the elastic element They are respectively connected to the connecting hinges of adjacent scissor hinge units. The scissor hinge unit can reduce the volume of the hemostatic structure and improve the storage capacity of the hemostatic device. The invention wraps the hemostatic material externally coated film through the self-adaptive elastic plate unfolding structure, and relies on the elastic plate to release the elastic strain so that the hemostatic material externally coated film can contact the wound surface and play a pressing role, thereby realizing hemostasis and coagulation.

The invention can realize the geometrical adaptability to the penetrating wound by releasing the elastic strain energy of the elastic plate and the flexibility of the hemostatic material external coating film, and can realize self-adaptive filling according to the shape of the wound. The elastic plate of the invention can release the corresponding strain energy according to the blood pressure and the elasticity of human tissue to balance it, so as to meet the needs of different wound hemostasis pressure, and has pressure adaptability. In the present invention, the elastic element releases elastic potential energy to drive the support rod to expand in the axial direction, thereby ensuring that the hemostatic structure has a sufficient support area.

Claims (11)

1. A foldable staggered elastic plate hemostatic structure with a cable, characterized in that it comprises: a hemostatic material external coating film (2), a staggered adaptive elastic plate deployment structure (3) and a cable (6), a hemostatic material The outer coating film (2) is pasted and fixed on the outer end of the staggered adaptive elastic plate deployment structure (3), and the cable (6) can control the staggered adaptive elastic plate deployment structure (3) to release elastic potential energy along the axial direction and The radial expansion drives the external coating film (2) of the hemostatic material to fit the wound surface to achieve hemostasis; The staggered self-adaptive elastic plate deployment structure (3) is composed of basic units of the self-adaptive elastic plate deployment structure and support rods (5); the basic units of the self-adaptive elastic plate deployment structure are distributed in layers, and each layer of self-adaptive elastic plates The basic unit of the deployment structure is composed of an elastic plate and a support 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 coating film (2). 2. A foldable interlaced elastic plate hemostatic structure with a cable according to claim 1, characterized in that: the elastic plate (4) on the basic unit of the self-adaptive elastic plate unfolding structure of each layer has n pieces, and each layer has n pieces. The number and position of the elastic plates (4) on the basic unit of the self-adaptive elastic plate unfolding structure are different, and are distributed in a staggered manner. 3. A foldable staggered elastic plate hemostatic structure with a cable according to claim 1, characterized in that: there are n pieces of elastic plates (4) on the basic unit of the self-adaptive elastic plate unfolding structure for each layer, and 1≤ n≤2, the elastic plates (4) of each layer are arranged according to a certain angle. 4. A foldable interlaced elastic plate hemostatic structure with a cable according to claim 1, characterized in that: setting the distance between the two adjacent layers in the basic unit of the self-adaptive elastic plate unfolding structure of each layer is the closest. The angle of the two elastic plates (4) is θ. When the elastic plate (4) is a curved surface, θ is defined as the angle formed by the tangent of the root of the projection curve of the adjacent two layers of elastic plates to the vertical plane of the support rod, and the root refers to the support The contact point of the rod (5) with the elastic plate (4),

5. A foldable interlaced elastic plate hemostatic structure with a cable according to claim 1, characterized in that: setting the distance between the two adjacent layers in the basic unit of the self-adaptive elastic plate unfolding structure of each layer is the closest. The angle of the two elastic plates (4) is θ. When the elastic plate (4) is a plane, θ is defined as the included angle formed by the projection of the adjacent two layers of elastic plates to the vertical plane of the support rod,

6. The foldable interlaced elastic plate hemostatic structure with a pull cable according to claim 1, wherein the geometrical line of the elastic plate (4) is an involute. 7. A foldable interlaced elastic plate hemostatic structure with a cable according to claim 1, characterized in that: the support rod (5) is composed of a scissor hinge unit (6) and an elastic element (7), The pin (9) is composed of, The scissor hinge unit (6) consists of two rods (8); the two rods (8) are hinged; The pin shaft (9) is fixedly connected to the hinge joint of the two rods (8), and both ends of the pin shaft (9) can be connected to one end of the elastic plate (4); An elastic element (7) is provided on both sides of the plane where the pin shaft (9) is located, and both ends of the elastic element (7) are respectively connected to the ends of the two rods (8) of the adjacent scissor hinge units (6). , the ends of the two rods (8) of the two adjacent scissor hinge units (6) are hinged. 8. A foldable interlaced elastic plate hemostatic structure with a cable according to claim 1 or 2, characterized in that: each elastic plate (4) is provided with more than one cable, the cable One end is fixed on the elastic plate (4), and the other end of the cable is drawn out through the support rod (5). 9. A foldable interlaced elastic plate hemostatic structure with a cable according to claim 1 or 2, characterized in that: each elastic plate (4) is provided with four said cables (6) , one end of a cable is fixed on the outer end of the elastic plate, one end of the second cable is fixed in the middle of the elastic plate, and the other ends of the two cables are led out through the support rod unit; the third cable is connected to the The fourth cable is respectively arranged symmetrically with the first cable and the second cable along the plane where the elastic plate (4) is located. 10. A foldable staggered elastic plate hemostatic device with a cable, comprising: a syringe (1) and the foldable staggered elastic plate hemostatic structure with a cable according to one of claims 1 to 9, with a cable The foldable staggered elastic plate hemostatic structure is located in the syringe, and the syringe (1) can drive the foldable staggered elastic plate hemostatic structure with a pull cable into the wound of human tissue. 11. A foldable staggered elastic plate hemostatic device with a pull cable according to claim 10, characterized in that: there is a reaming blade (10) at the front end of the syringe (1), which can cut the wound to put in hemostasis device.

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