CN109009307B - A kind of arc elastic plate hemostatic structure, device and method - Google Patents

Abstract

The invention discloses a hemostatic structure, device and method of a circular arc elastic plate. The self-adaptive elastic plate deployment structure is composed of elastic plates and splints. The elastic plates are fixed on the splint and distributed in layers, one for each layer. The elastic plates of each layer are arranged according to a certain angle difference θ. The geometric line of the elastic plate is Arc with radius R. The outer coating film of hemostatic material is pasted and fixed on the outer side of the elastic plate. The hemostatic structure of the arc elastic plate is stored in the syringe before use. When using, the hemostatic structure is injected into the wound. The self-adaptive elastic plate unfolding structure releases elastic potential energy, expands in the radial direction, and drives the hemostatic material to fit the wound surface, so as to achieve rapid Hemostatic function.

Description

A kind of arc elastic plate hemostatic structure, device and method

technical field

The invention relates to a hemostasis structure of a circular arc elastic plate, a hemostasis device and a hemostasis method, which are used for hemostasis treatment of penetrating wounds in the battlefield.

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 solved by the present invention is: in view of the above-mentioned deficiencies in the prior art, an arc elastic plate hemostatic structure, device and method with shape and pressure adaptability are proposed. In the present invention, an external coating film of hemostatic material is pasted on the surface of the self-adaptive elastic plate unfolding structure, the self-adaptive elastic plate unfolding structure is compressed before use to store energy, and the self-adaptive elastic plate unfolding structure can be unfolded by releasing elastic strain through the elastic plate during use. And according to the corresponding deformation of the wound geometry to achieve shape adaptation, release the corresponding elastic strain energy according to blood pressure to achieve pressure adaptation, drive the external application of hemostatic material to make it fit the wound surface, achieve rapid filling, coagulation, hemostasis, and save the battle. The lives of wounded soldiers.

The technical solution of the present invention is:

An arc elastic plate hemostatic structure, comprising: a hemostatic material outer coating film and an adaptive elastic plate deployment structure; the hemostatic material outer coating film is wrapped on the outside of the adaptive elastic plate deployment structure, and the adaptive elastic plate deployment structure is radially The extended hemostatic material externally applied film provides support, and drives the hemostatic material externally applied film to adhere to the wound surface to achieve hemostasis.

The self-adaptive elastic plate unfolding structure includes a plurality of elastic plates and two clamping plates, two ends of the elastic plates respectively pass through the two clamping plates and are distributed in layers, and each layer has one elastic plate.

The elastic plate slides in the splint. In the contracted state, the elastic plate is a full circle, storing strain energy, and releasing the strain energy during expansion provides power for the self-adaptive elastic plate unfolding structure to expand in the radial direction.

The elastic plates of adjacent layers are arranged in parallel and opposite to each other.

Both the elastic plate and the splint are made of elastic material.

The elastic modulus of the elastic material used in the elastic plate ranges from 50 to 150 GPa.

The geometrical line type of the elastic plate is a semi-circular arc.

The hemostatic material externally applied film swells when exposed to water.

An injection-type circular arc elastic plate hemostatic device, comprising a syringe and a hemostatic structure located in the syringe, a hemostatic material outer coating film and an adaptive elastic plate deployment structure; the hemostatic material outer coating film is wrapped on the outside of the adaptive elastic plate deployment structure , the self-adaptive elastic plate unfolding structure expands the hemostatic material externally coated film along the radial direction to provide support, and drives the hemostatic material externally coated film to fit the wound surface to achieve hemostasis.

The self-adaptive elastic plate unfolding structure is a cylindrical whole, including a plurality of elastic plates and two clamping plates, two ends of the elastic plates pass through the clamping plates and are distributed in layers, and each layer has an elastic plate; The plate slides in the splint, and in the contracted state, the elastic plate is a full circle, storing strain energy, and releasing the strain energy during expansion provides power for the self-adaptive elastic plate unfolding structure to expand in the radial direction.

The elastic plates of adjacent layers are arranged in parallel and opposite each other. The elastic plates and the splint are made of elastic materials. The elastic modulus of the elastic materials used for the elastic plates ranges from 50 to 150 GPa. The geometrical line of the elastic plates is half arc.

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 structure.

A hemostasis method based on an injectable mesh hemostatic knot device, the steps are as follows:

(1) use a syringe to inject the hemostatic structure into the wound, when the wound is small, first expand the wound through the reaming blade at the front end of the syringe (1), and then inject the hemostatic structure into the wound;

(2) The elastic plate and splint release elastic potential energy to drive the self-adaptive elastic plate unfolding structure to expand radially, provide support for the hemostatic material overcoat film, and drive the hemostatic material overcoat film to stick to the wound surface, thereby achieving hemostasis.

The beneficial effects of the present invention compared with the prior art are:

(1) The inflatable and elastic deployment structure can be quickly expanded to fill the penetrating wound. Compared with the existing methods such as compression hemostasis, burning hemostasis, oil and gauze filling hemostasis and the like, the hybrid hemostasis structure has the effect of rapid filling and hemostasis.

(2) The unfolded structure 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.

(3) The elastic modulus of the elastic material used in the polygonal unit and the elastic hinge is 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.

(4) It can provide continuous squeezing force to the wound surface, the squeezing pressure can be adjusted, and the adjustment range is large (0 ~ 16kPa)

(5) It can be unfolded and folded repeatedly to prevent wound tissue from necrosis.

(6) It is easy to store and can be stored for a long time.

Description of drawings

Fig. 1 is a schematic diagram of an injectable arc elastic plate hemostatic device;

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;

Fig. 6 is the initial contraction state diagram of the arc elastic plate hemostatic structure;

Fig. 7 is the normal use state diagram of the arc elastic plate hemostatic structure;

Fig. 8 is a diagram showing the free unfolding state of the hemostatic structure of the arc elastic plate.

Detailed ways

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

Excessive blood loss caused by penetrating wounds in the battlefield is one of the important factors causing casualties, but there is no better and effective method for hemostasis of penetrating wounds. Existing hemostasis treatments for penetrating wounds in the battlefield mainly use compression hemostasis, burning hemostasis, oil and gauze filling to stop hemostasis, etc. These conventional hemostasis methods are still far from meeting the first aid requirements for penetrating wounds hemostasis due to time-consuming conditions or limitations of treatment effects. There is an urgent need to develop a new hemostasis method and device to fill the gap. The invention is designed to use hemostatic material to cooperate with the deployment structure to rapidly expand to fill the penetrating wound, wrap the hemostatic material outside the deployment structure, and realize deployment by relying on the self-elasticity of the deployment structure. , fill the penetrating wound and fit the wound to achieve rapid filling and hemostasis, saving the lives of soldiers injured in battle.

In view of the deficiencies of the prior art, a hemostatic structure based on a circular arc elastic plate proposed by the present invention is applied to the hemostasis emergency treatment of penetrating wounds in the battlefield.

As shown in FIG. 1 , the hemostatic structure based on the arc elastic plate includes: a hemostatic material outer coating 2 and an adaptive elastic plate deployment structure 3 ; the hemostatic material outer coating 2 is wrapped on the outside of the adaptive elastic plate deployment structure 3 , the self-adaptive elastic plate deployment structure 3 radially expands the hemostatic material overcoat film 2 to provide support, so that the hemostatic material overcoat film 2 as shown in FIG. The state where the material overcoat film 2 is stretched is shown in FIG. 3 .

As shown in FIG. 4 , the self-adaptive elastic plate deployment structure 3 includes a plurality of elastic plates 4 and two clamping plates 5 . The two ends of the elastic plates 4 respectively pass through the two clamping plates 5 and are distributed in layers. Layer an elastic plate 4. The elastic plate 4 slides in the splint 5. In the contracted state, the elastic plate 4 is a full circle, storing strain energy, and releasing the strain energy during expansion provides power for the self-adaptive elastic plate unfolding structure 3 to expand in the radial direction.

As shown in FIG. 5 and FIG. 8 , the geometrical line of the elastic plate 4 is a semicircular arc. The elastic plates 4 of adjacent layers are arranged in parallel and opposite to each other. Both the elastic plate 4 and the splint 5 are made of elastic materials. The elastic material can be a corrosion-resistant high-elastic alloy such as beryllium copper alloy and phosphor copper tape. The elastic modulus of the elastic material used for the elastic plate 4 and the splint 5 ranges from 50 to 150GPa .

As shown in FIG. 1 , based on the above-mentioned hemostatic structure, the present invention also proposes an injectable circular arc elastic plate hemostatic device, which includes a syringe 1 , a hemostatic structure located in the syringe 1 , a hemostatic material external coating film 2 and an adaptive elastic plate deployment structure 3; the hemostatic material outer coating film 2 is wrapped on the outside of the self-adaptive elastic plate deployment structure 3, and the adaptive elastic plate deployment structure 3 radially expands the hemostatic material outer coating film 2 to provide support, and drives the hemostatic material outer coating film 2 to fit Hemostasis is achieved on the wound surface.

The front end of the syringe 1 is provided with a reaming blade 6, when the wound is small, the wound is cut to place the hemostatic structure.

Further, the present invention also proposes a hemostasis method based on an injectable mesh hemostatic knot device, the steps are as follows:

1. Use the syringe 1 to inject the hemostatic structure into the wound. When the hemostatic structure is in the syringe 1, it is in the initial contracted state, as shown in Figure 6, when the wound is small, first expand the wound through the reaming blade 6 at the front end of the syringe 1 , and then inject the hemostatic structure into the wound;

2. The schematic diagram of the hemostatic structure as shown in Figure 7, the elastic plate 4 and the splint 5 release the elastic potential energy to drive the adaptive elastic plate unfolding structure 3 to expand radially, the hemostatic material coating film 2 provides support, and drives the external application of the hemostatic material. Membrane 2 is tightly attached to the wound surface, thereby achieving hemostasis.

The hemostatic structure, hemostatic device or hemostasis method proposed by the present invention works as follows: the hemostatic structure has an initial contraction state, a normal use state and a free deployment state. In the initial contracted state, the arcuate elastic plate hemostatic structure is stored in the syringe. In the normal use state, the arc elastic plate unfolding structure deforms accordingly according to the shape of the wound, so that the hemostatic material coating film is close to the wound surface; in the free deployment state, the arc elastic plate hemostatic structure is in a state of zero potential energy.

The production process is transformed from the free expansion state to the initial contraction state, and the arc elastic plate hemostatic structure is stored in the syringe to store the elastic strain energy. At this time, the elastic plate hemostatic structure is in the initial contraction state, as shown in Figure 6.

The use process is to transform from the initial contraction state to the normal use state. The arc 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. In the wound, the elastic plate releases the corresponding elastic strain energy according to the shape of the wound and the pressure received, and the self-adaptive elastic plate expansion structure expands radially. As shown in Figure 7, the arc 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 self-adaptive elastic plate unfolding structure expands in the radial direction, and drives the outer coating film 2 of the hemostatic material to make 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 hemostatic structure of the arc elastic plate is taken out from the wound, and the removal process is transformed from the normal use state to the free expansion state. As shown in Figure 8, the arc elastic plate hemostatic structure is in the free expansion state, and its elastic strain energy zero.

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 embodiments proposed by the present invention are as follows:

The preferred solution is: when the hemostatic material external coating film is expanded into a cylindrical shape, the diameter is 10cm-12cm and the height is 13cm-15cm; after the elastic plate 4 is expanded, the diameter is 8-12cm, the height is 0.8-1.2cm, and the thickness is 0.2-0.4cm mm; reaming blades are 3 to 4 pieces, each with a length of 1 to 1.2 cm. The inner diameter of the syringe is about 1.8-2.2 cm for better hemostasis;

A further preferred solution is: when the hemostatic material external coating film is expanded into a cylindrical shape, the diameter is 12 cm and the height is 15 cm; the elastic plate 4: after the expansion, the diameter is 10 cm, the height is 1 cm, and the thickness is 0.3 mm; : There are 4 reaming blades, each 1.2 cm long. The inner diameter of the syringe is 2 cm.

The elastic modulus of the elastic material used for the elastic plate and the splint 5 is in the range of 50-150 Gpa, so as to satisfy the hemostatic effect and provide an appropriate force to the penetrating wound.

The unfolding structure of the present invention has the characteristics of self-adaptive geometric shape, can be applied to penetrating wounds with a maximum wound diameter of 10 cm, and can provide continuous pressing force to the wound surface. Combined with the blood-sucking and swelling properties of the hemostatic material, the pressure on the wound is even, the wound has a good fit, and it can provide continuous squeezing force to the wound. Compared with the existing methods such as compression hemostasis, burning hemostasis, oil and gauze filling hemostasis and the like, it has the effect of rapid filling hemostasis.

The content not described in detail in the specification of the present invention belongs to the well-known technology of those skilled in the art.

Claims (9)

1. The utility model provides a circular arc elastic plate hemostasis structure which characterized in that includes: a hemostatic material external application film (2) and a self-adaptive elastic plate unfolding structure (3); the self-adaptive elastic plate unfolding structure (3) is radially expanded to provide support for the hemostatic material outer coating film (2), and the hemostatic material outer coating film (2) is driven to be attached to the wound surface to realize hemostasis;

the self-adaptive elastic plate unfolding structure (3) comprises a plurality of elastic plates (4) and two clamping plates (5), wherein two ends of each elastic plate (4) respectively penetrate through the two clamping plates (5) and are distributed in a layered mode, and each layer of each elastic plate (4) is arranged;

the elastic plate (4) slides in the clamping plate (5), when in a contraction state, the elastic plate (4) is in a full circle shape, stores strain energy, and releases the strain energy to provide power for the radial expansion of the self-adaptive elastic plate unfolding structure (3) when in expansion.

2. The circular arc elastic plate hemostatic structure according to claim 1, wherein: the elastic plates (4) of adjacent layers are parallel and opposite to each other.

3. The circular arc elastic plate hemostatic structure according to claim 1, wherein: the elastic plate (4) and the clamping plate (5) are both made of elastic materials.

4. The circular arc elastic plate hemostatic structure according to claim 1, wherein: the elastic modulus of the elastic materials adopted by the elastic plate (4) and the clamping plate (5) ranges from 50GPa to 150 GPa.

5. The circular arc elastic plate hemostatic structure according to any one of claims 2 to 4, wherein: the geometric linear of the elastic plate (4) is a semicircular arc.

6. The circular arc elastic plate hemostatic structure according to claim 1, wherein: the hemostatic material external application film (2) expands when meeting water.

7. The utility model provides an injection formula circular arc elastic plate hemostasis device which characterized in that: the self-adaptive elastic plate hemostatic device comprises an injector (1) and a hemostatic structure positioned in the injector (1), wherein the hemostatic structure comprises a hemostatic material outer coating film (2) and a self-adaptive elastic plate unfolding structure (3); the self-adaptive elastic plate unfolding structure (3) is radially expanded to provide support for the hemostatic material outer coating film (2), and the hemostatic material outer coating film (2) is driven to be attached to the wound surface to realize hemostasis;

the self-adaptive elastic plate unfolding structure (3) is a cylindrical whole and comprises a plurality of elastic plates (4) and two clamping plates (5), two ends of each elastic plate (4) penetrate through the clamping plates (5) and are distributed in a layered mode, and each layer of each elastic plate (4) is arranged; the elastic plate (4) slides in the clamping plate (5), when in a contraction state, the elastic plate (4) is in a full circle shape, stores strain energy, and releases the strain energy to provide power for the radial expansion of the self-adaptive elastic plate unfolding structure (3) when in expansion.

8. The hemostatic device with injection-type arc elastic plate according to claim 7, wherein: the elastic plates (4) of adjacent layers are parallel and oppositely arranged, the elastic plates (4) and the clamping plates (5) are both made of elastic materials, the elastic modulus range of the elastic materials adopted by the elastic plates (4) is 50-150 GPa, and the geometric line of the elastic plates (4) is a semicircular arc.

9. The hemostatic device according to claim 7 or 8, wherein the hemostatic device comprises: the front end of the injector (1) is provided with a hole expanding blade (6), and when a wound is small, the wound is cut to place a hemostatic structure.

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