Tooling and method for retracting a hemostatic device

Abstract

The present invention discloses a tool and method for folding a hemostatic device, the tool comprising: an inner layer tool, the inner layer tool consisting of a chassis and columns; the columns are distributed in a circle on the chassis; an outer layer tool, enclosed by at least two mesh grilles to form a circle; the mesh grilles can be fixed on the chassis after enclosing; the grilles of the mesh grilles are arranged in parallel in the height direction of the grilles, and the spacing of the grilles is the spacing of the blades of the hemostatic device; the number of layers of the grilles is greater than or equal to the number of layers of the blades of the hemostatic device; a locking tool is used to lock the mesh grilles in an enclosed circular state. The tool structure for quickly folding the hemostatic device of the present invention has the advantages of graded installation of the inner and outer tooling of the device, which can provide radial and axial constraints, ensure that the folded hemostatic device blades are arranged in an orderly manner without slipping, and can fold the hemostatic material at the same time, optimizing the hemostatic effect of the hemostatic device.

Description

Technical Field

[0001] The present invention relates to the technical field of folding tooling, and particularly to a rapid folding tooling structure and folding method for a hemostatic device with radial and axial constraints Background Art

[0002] Currently, battlefield penetrating wound hemostasis treatment mainly uses methods such as compression hemostasis, cauterization hemostasis, and filling hemostasis with grease and gauze. However, due to wartime conditions or limitations in treatment effects, these conventional hemostasis methods far from meet the first-aid requirements for penetrating wound hemostasis. Therefore, a new type of penetrating wound hemostatic device with an elastic expansion adaptive structure as the core structure has been developed. According to its usage function, it is required that in the folded state, it can be placed in a constrained storage tube, and at the same time, it can quickly expand after the constraint is removed, adapt to and fill the wound tract with a complex shape, and provide uniform supporting force inside the wound tract

[0003] In the prior art, if the assembly of the hemostatic device is completed manually, there will be defects such as large expansion resistance and uneven folding of the hemostatic material, which affects the orderly expansion of the hemostatic device Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a tooling and method for folding a hemostatic device with orderly arranged blades and high folding efficiency

[0005] To solve the above technical problem, the technical solution adopted by the present invention is as follows

[0006] The present invention first provides a tooling for folding a hemostatic device, including

[0007] An inner layer tooling, which consists of a chassis and columns; the columns are circumferentially distributed on the chassis

[0008] An outer layer tooling, which is formed by enclosing at least two grid fences into a circle; the grid fences can be fixed on the chassis after enclosing; the grilles of the grid fences are parallelly arranged in the height direction of the grid fences, and the spacing between the grilles is the same as the spacing between the blades of the hemostatic device; the number of layers of the grilles is greater than or equal to the number of layers of the blades of the hemostatic device

[0009] A locking tooling, which is used to lock the grid fences in the enclosed circular state

[0010] The present invention also provides a method for folding a hemostatic device, including

[0011] Placing the central shaft rod of the hemostatic device inside the inner layer tooling, so that the blades with the same interlayer angle of the hemostatic device are located between adjacent two columns

[0012] After passing the blades of each layer of the hemostatic device through the grilles of the outer layer tooling, fixing the outer layer tooling on the chassis of the inner layer tooling

[0013] Lock the outer tooling with a locking tooling;

[0014] Rotate the central shaft rod of the hemostatic device so that the knot blade contacts the column. Driven by the shaft rod, the blade bends and winds, gradually converging within the range surrounded by the column, and the convergence of the hemostatic device is completed.

[0015] The tooling of the present invention includes an inner tooling, an outer tooling and a locking tooling. The inner tooling is used to provide the thrust during the convergence process of the blades in the hemostatic device and the effective radial constraint on the blades after convergence. The outer tooling is used to limit the axial slip during the convergence process of the blades, ensuring the orderly bending and winding of the blades. The locking tooling provides the radial constraint during the convergence process of the blades. The inner tooling and the outer tooling are installed in a hierarchical manner, which can provide radial and axial constraints, ensuring the orderly arrangement of the converged blades without slipping. The convergence can be completed by simply placing the blades of the hemostatic device into the outer tooling and the grille and rotating the central shaft of the hemostatic device. It is a fast and efficient convergence method. At the same time, the hemostatic material can be wrapped on the surface of the inner tooling. Through the rotation of the inner tooling, after reaching the predetermined thickness, the convergence of the hemostatic material is realized, optimizing the hemostatic effect of the hemostatic device.

[0016] The present invention has the following beneficial effects compared with the prior art:

[0017] (1) The rapid convergence tooling structure of the hemostatic device with radial and axial constraints of the present invention provides an effective solution for the realization of a new type of through - wound hemostatic device. The blades are converged by the method of bending and winding while, ensuring the smooth and orderly elastic convergence process of the deployed structure of the hemostatic device.

[0018] (2) The present invention provides radial and axial constraints for the blades, ensuring the orderly arrangement of the converged blades without slipping. At the same time, the hemostatic material can be converged, optimizing the hemostatic effect of the hemostatic device and other advantages.

[0019] (3) The present invention adopts a hierarchical installation of the inner and outer toolings of the device, which is convenient for installation and disassembly.

[0020] (4) The sizes of the inner tooling, the outer tooling and the clamp in the present invention can be adjusted according to the size of the hemostatic device and the size of the blades, expanding the applicable field of the present invention. Brief Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of the rapid convergence tooling structure of the hemostatic device with radial and axial constraints of the present invention;

[0022] Figure 2 is a schematic structural diagram of the chassis of the inner tooling of the present invention;

[0023] Figure 3It is a schematic diagram of the column of the inner layer tooling of the present invention;

[0024] Figure 4 It is a schematic diagram of the inner layer tooling of the present invention;

[0025] Figure 5 It is a schematic diagram of the outer layer tooling structure of the present invention;

[0026] Figure 6 is a schematic diagram of a clamp of the present invention;

[0027] Figure 7 The installation process of the hemostatic device of the present invention is shown in FIG. Figure 1 ;

[0028] Figure 8 The installation process of the hemostatic device of the present invention is shown in FIG. Figure 2 ;

[0029] Figure 9 The installation process of the hemostatic device of the present invention is shown in FIG. Figure 3 ;

[0030] Figure 10 is a schematic diagram of the initial state of the hemostatic device of the present invention when it is folded;

[0031] Figure 11 is a schematic diagram of the folding process of the folding hemostatic device of the present invention;

[0032] Figure 12 It is a schematic diagram of the complete folding of the hemostatic device of the present invention. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the new embodiment clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and implementations. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figure 1 As shown, the folding tool of the present invention is a quick folding tool of a hemostatic device with radial and axial constraints, including an inner tool 1 composed of a chassis 11 and a column 12, an outer tool 2 composed of a mesh grid 21 and a locking tool 3, which folds the blades of the hemostatic device.

[0035] like Figures 2 - 4As shown in the figure, the chassis 11 of the inner tooling in this embodiment includes one central positioning hole 111, several column holes 112, and several edge positioning holes 113. The central positioning hole 111 is used to place the central shaft rod of the hemostatic device. The column holes 112 are used to connect the columns. The edge positioning holes 113 are used to connect the outer tooling 2.

[0036] In one embodiment, the column 12 of the inner tooling is an arc-shaped column, and it is connected to the chassis 11 through the column holes 112 to form the inner tooling.

[0037] As Figure 5 shown, in one embodiment, the outer tooling is composed of two identical 180° grid grilles 21 and six lower positioning pins 22 located at the lower end of the grid grille 21; the grille of the grid grille 21 is a horizontal grille, and the horizontal grille is used to limit the axial slip during the leaf folding process, so as to ensure that the leaves are bent and wound orderly; the lower positioning pins 22 cooperate with the edge positioning holes 113 of the chassis 11 to form the outer tooling 2, which is convenient for installation and disassembly.

[0038] As Figure 6 shown, in one embodiment, the locking tooling 3 uses a clamp, and the clamp is placed at the upper end of the outer tooling 2 to provide radial restraint during the folding process.

[0039] The materials of the inner tooling, the outer tooling and the clamp are metal, 3D printed polylactic acid, or high-performance fiber and composite materials.

[0040] As Figures 7 - 10 shown, this embodiment provides a method for folding a hemostatic device. The steps are as follows:

[0041] First, place the central shaft rod 4 of the hemostatic device inside the arc-shaped columns of the inner tooling. The leaves 5 with the same layer angle are located between adjacent two arc-shaped columns. Then install the outer tooling 2 and the clamp, and the leaves 5 of each layer pass through the horizontal grille.

[0042] As Figure 11 shown, the folding process of the hemostatic device in this embodiment is to fix the chassis 11 of the tooling, rotate the central shaft rod 4 of the unfolded hemostatic device counterclockwise, the leaves 5 contact the arc-shaped columns, and under the drive of the central shaft rod 4, the leaves 5 bend and wind, and gradually fold within the range surrounded by the arc-shaped columns.

[0043] As Figure 12 shown, the complete folding of the hemostatic device in this embodiment is to continuously rotate the central shaft rod 4 located in the tooling structure until all the leaves 5 are folded within the range surrounded by the columns, completing the auxiliary folding of the hemostatic device, and the folded leaves are arranged regularly.

[0044] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A tooling for the retraction of a hemostatic device, characterized in that, Comprising: Inner tooling, the inner tooling is composed of a chassis and columns; the columns are circumferentially distributed on the chassis; Outer tooling, which is formed into a circle by enclosing at least 2 grid fences; the grid fences can be fixed on the chassis after enclosing; the grilles of the grid fences are arranged in parallel in the height direction of the grid fences, and the spacing of the grilles is the same as the spacing of the blades of the hemostatic device; The number of layers of the grilles is greater than or equal to the number of layers of the blades of the hemostatic device; Locking tooling, used to lock the grid fences in the enclosed circular state.

2. The tooling for the retraction of a hemostatic device according to claim 1, characterized in that, A central positioning hole for positioning the central shaft rod of the hemostatic device is provided on the chassis.

3. The tooling for the retraction of a hemostatic device according to claim 2, characterized in that, Column holes are also provided on the chassis; the lower ends of the columns are arranged in the column holes.

4. The tooling for the retraction of a hemostatic device according to claim 3, characterized in that, Edge positioning holes are also provided on the chassis; the lower ends of the grid fences are arranged in the edge positioning holes.

5. The tooling for the retraction of a hemostatic device according to claim 4, characterized in that, A positioning pin is provided at the lower end of the grid fence, and the positioning pin is located in the edge positioning hole.

6. The tooling for the retraction of a hemostatic device according to any one of claims 1 - 5, characterized in that, The outer tooling is composed of two identical 180° grid fences.

7. The tooling for the retraction of a hemostatic device according to any one of claims 1 - 5, characterized in that, The locking tooling is a clamp.

8. The tooling for the retraction of a hemostatic device according to any one of claims 1 - 5, characterized in that, The column is an arc-shaped column with an inner arc surface and an outer arc surface. The inner arc surface is used for wrapping after the blades of the hemostatic device are completely retracted, and the outer arc surface is used for guiding when the blades of the hemostatic device are retracted.

9. The tooling for the retraction of a hemostatic device according to claim 7, characterized in that, The radius of the inner tooling is 1 / 8 - 1 / 3 of the length of the unilateral blade of the hemostatic device; The number of columns of the inner tooling is the number required for the blades of the hemostatic device to form a circle, and the gap between two columns is 2 - 8 times the thickness of the blade; The width of the grille of the grid fence of the outer tooling is 1.1 - 1.5 times the width of the blade; The radius of the clamp matches the radii of the inner and outer toolings.

10. A method for retracting a hemostatic device based on the tooling according to any one of claims 1 - 9, characterized in that, Comprising: Place the central shaft rod of the hemostatic device inside the inner tooling, so that the blades with the same interlayer angle of the hemostatic device are located between adjacent two columns; After passing the blades of each layer of the hemostatic device through the grilles of the outer tooling, fix the outer tooling on the chassis of the inner tooling; Lock the outer tooling with the locking tooling; Rotate the central shaft rod of the hemostatic device to make the blades contact the columns. Driven by the shaft rod, the blades bend and wind, and gradually retract within the range enclosed by the columns, completing the retraction of the hemostatic device.

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