Valve assist system sheath

Abstract

The invention is suitable for the technical field related to medical instruments, and provides a valve auxiliary system sheath which comprises a shell assembly and a catheter sheath tube arranged on the shell assembly. The bending adjusting handle is used for adjusting the angle of the tail end of the catheter sheathing canal, and the bending adjusting handle is connected with the shell assembly; the catheter sheath is used for being matched with the catheter sheath tube to lead in an interventional instrument or convey an auxiliary instrument; the flushing valve is used for conveying medicaments, and the flushing valve is communicated with the catheter sheath through an extension tube body; the catheter sheath tube, the catheter sheath, the flushing valve and other components are arranged in a matched mode, it can be ensured that the dilator is always kept in the catheter sheath tube in the original position in the process that the catheter sheath tube enters a patient access blood vessel, blood cannot permeate out of a product, use is convenient, and the valve positioning accuracy and the operation safety are effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a valve assist system sheath. Background Art

[0002] Heart valves are a vital component of the blood circulation system and are responsible for ensuring the one-way flow of blood. However, due to rheumatic heart disease, degenerative heart disease and other reasons, heart valves may become diseased, leading to stenosis or reflux dysfunction, which seriously affects the patient's quality of life and life safety.

[0003] Most of the existing valve assist system sheaths are inconvenient to use and have poor accuracy, which seriously affects the safety of the operation; in the process of valve replacement, the valve instrument causes great damage to the blood vessels and reduces the secondary damage to the patient. Therefore, in view of the above situation, it is urgent to provide a valve assist system sheath to overcome the shortcomings in current practical applications. Summary of the invention

[0004] The object of the present invention is to provide a valve assist system sheath to solve the problems in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the valve assist system sheath provided by the present invention comprises: A housing assembly and a catheter sheath disposed on the housing assembly; A bending handle for adjusting the angle of the distal end of the catheter sheath, wherein the bending handle is connected to the housing assembly; A catheter sheath used to cooperate with a catheter sheath tube to achieve the introduction of interventional devices or the delivery of auxiliary devices; And a flushing valve for delivering medicine, wherein the flushing valve is connected to the catheter sheath through an extension tube body.

[0006] As a further solution of the present invention: the shell assembly includes a left face shell and a right face shell, and the left face shell and the right face shell are detachably connected.

[0007] As a further solution of the present invention: the bending handle comprises: A guide rail shaft fixedly mounted on the housing assembly, wherein a locking cap is fixedly mounted on one end of the guide rail shaft away from the housing assembly, and two groups of guide rail shafts are provided; The bending knob installed between the locking cap and the housing assembly is rotated, and a tooth block connected with the inner thread of the bending knob is also slidably installed on the guide shaft; And a bending adjustment wire for adjusting the curvature, one end of the bending adjustment wire is connected to the catheter sheath, and the other end of the bending adjustment wire is fixedly connected to the tooth block through a fixed wire drawing ring.

[0008] As a further solution of the present invention: a stainless steel fixing ring for preventing the bending wire from being damaged and a protective cap for protecting the catheter sheath from being easily bent are also provided in the housing assembly, and the stainless steel fixing ring is connected to the protective cap.

[0009] As a further solution of the present invention: the bending adjustment handle also includes a fixing ring B and a fixing ring A for realizing the bending adjustment knob to rotate freely without any stuck phenomenon.

[0010] As a further solution of the present invention: the fixing ring B is used for connecting the bending adjustment knob and the locking cap, and the fixing ring A is used for connecting the bending adjustment knob and the housing assembly.

[0011] As a further solution of the present invention: the catheter sheath includes a liquid injection type sealing valve, a dilator and a pressurizing valve used in conjunction with the liquid injection type sealing valve, and the pressurizing valve is connected to the liquid injection type sealing valve through a hose body.

[0012] As a further solution of the present invention: the liquid injection type sealing valve comprises: A balloon inner part for positioning the dilator, the balloon inner part being disposed in the housing assembly; A balloon membrane component, wherein the balloon membrane component is connected to the balloon inner component via a balloon liquid component; A sheath seat fixing piece is used for connecting the catheter sheath tube and the balloon liquid component, and a sheath seat sealing piece is also arranged between the catheter sheath tube and the sheath seat fixing piece.

[0013] As a further solution of the present invention: the dilator includes a dilator tube body and a catheter sheath fixing piece, and the catheter sheath fixing piece is used to fix the dilator tube body on the balloon inner piece.

[0014] As a further solution of the present invention: a developing ring is also provided at the end of the catheter sheath tube.

[0015] The above technical scheme is adopted, and the present invention has the following beneficial effects: the dilator is used for the introduction of interventional instruments or the delivery of auxiliary instruments. After the catheter sheath fixing part is assembled with the dilator, it is used to fix the dilator on it, so that the dilator is not easy to fall or shift when the doctor is performing surgery. After the balloon liquid component is assembled with the balloon membrane component, the hose body and the pressurizing valve, it is used to inject physiological saline. The dilator is inserted into the catheter sheath through the liquid injection sealing valve, and the pressurizing valve pressurizes the valve, so that the dilator is always kept in place in the sheath during the process of the catheter sheath entering the patient's access blood vessel, and the blood is kept in the sheath. It will not penetrate the outside of the product; the sheath seat seal is used to improve the sealing performance of the catheter sheath and the sheath seat fixing member after assembly; the stainless steel fixing ring is used to prevent the bending wire from damaging the protective cap; the protective cap is used to protect the catheter sheath from being easily bent; the locking cap is used to fix the guide shaft and prevent the bending knob from falling off; the bending wire can be fixed by using a fixed drawing ring so that the bending wire can follow the movement of the tooth block, and the tooth block can be made to reciprocate on the guide shaft by rotating the bending knob to control the bending distance; the present invention is easy to use and effectively improves the accuracy of valve positioning and the safety of surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the planar structure of the present invention.

[0018] Figure 2 It is an exploded view of the present invention.

[0019] Figure 3 for Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0020] Figure 4 A schematic diagram of the internal structure of a housing assembly of the present invention.

[0021] In the accompanying drawings: 1-dilator, 2-catheter sheath fixing part, 3-balloon inner part, 4-balloon liquid component, 5-left side shell, 6-balloon membrane assembly, 7-locking cap, 8-guide shaft, 9-bending knob, 10-fixing ring B, 11-fixed drawing ring, 12-tooth block, 13-fixing ring A, 14-right side shell, 15-sheath seat fixing part, 16-sheath seat sealing part, 17-stainless steel fixing ring, 18-protective cap, 19-bending wire, 20-catheter sheath, 21-extension tube body, 22-flushing valve, 23-hose body, 24-pressurization valve, 25-syringe, 26-developing ring, 27-dilator body, 28-bending handle, 29-liquid injection sealing valve. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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.

[0023] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention will be understood according to specific circumstances.

[0025] The present invention is further explained below in conjunction with specific implementation modes.

[0026] See also Figure 1-Figure 4 , the valve assist system sheath provided by an embodiment of the present invention, the valve assist system sheath comprising: A housing assembly and a catheter sheath 20 disposed on the housing assembly; A bending handle 28 for adjusting the angle of the distal end of the catheter sheath tube 20, wherein the bending handle 28 is connected to the housing assembly; A catheter sheath used to cooperate with the catheter sheath tube 20 to achieve the introduction of interventional instruments or the delivery of auxiliary instruments; And a flushing valve 22 for delivering medicine, the flushing valve 22 is connected to the catheter sheath through the extension tube body 21.

[0027] In the embodiment of the present invention, the medicine delivered by the flushing valve 22 can be a contrast agent, etc. The catheter sheath 20 is used to expand the percutaneous incision in the interventional surgery, establish a catheter introduction blood path, so as to facilitate the introduction of interventional instruments, or assist the delivery of instruments; the present invention can ensure that the dilator 1 always remains in place in the catheter sheath 20 during the process of the catheter sheath 20 entering the patient's access blood vessel through the coordinated arrangement of the catheter sheath 20, the catheter sheath and the flushing valve 22. 31 ][ 12 ], and blood will not penetrate the outside of the product[ 33 ][ 14 ], easy to use, effectively improves the accuracy of valve positioning and the safety of surgery[ 35 ][ 16 ] .

[0028] In one embodiment of the present invention, see Figure 1-Figure 4 The shell assembly includes a left face shell 5 and a right face shell 14, and the left face shell 5 and the right face shell 14 are detachably connected; The bending handle 28 comprises: A guide rail shaft 8 is fixedly mounted on the housing assembly, and a locking cap 7 is fixedly mounted on one end of the guide rail shaft 8 away from the housing assembly; The bending knob 9 installed between the locking cap 7 and the housing assembly is rotated, and a tooth block 12 connected to the inner thread of the bending knob 9 is also slidably installed on the guide shaft 8; and a bending adjustment wire 19 for adjusting the curvature, one end of the bending adjustment wire 19 is connected to the catheter sheath 20, and the other end of the bending adjustment wire 19 is fixedly connected to the tooth block 12 via a fixed wire drawing ring 11; The guide rail shaft 8 is provided with two groups; The bending handle 28 also includes a fixing ring B10 and a fixing ring A13 for enabling the bending knob 9 to rotate freely without a stuck phenomenon; The fixing ring B10 is used to connect the bending knob 9 and the locking cap 7, and the fixing ring A13 is used to connect the bending knob 9 and the housing assembly; The catheter sheath includes a liquid injection sealing valve 29, a dilator 1, and a pressurizing valve 24 used in conjunction with the liquid injection sealing valve 29. The pressurizing valve 24 is connected to the liquid injection sealing valve 29 through a hose body 23. The pressurizing valve 24 can be used in conjunction with a syringe 25 or other medical devices, which is not specifically limited here. The liquid injection sealing valve 29 comprises: A balloon inner part 3 for positioning the dilator 1, wherein the balloon inner part 3 is arranged in the housing assembly; The balloon membrane component 6 is connected to the balloon inner part 3 through the balloon liquid component 4; after the balloon liquid component 4 is assembled with the balloon membrane component 6, the hose body 23, and the pressurizing valve 24, it is used to inject physiological saline, and the dilator 1 is inserted into the catheter sheath 20 through the liquid injection sealing valve 29. The pressurizing valve 24 pressurizes the liquid injection sealing valve 29, so that the dilator 1 is always kept in place in the catheter sheath 20 during the process of the catheter sheath 20 entering the patient's access blood vessel, and blood does not penetrate the outside of the product; A sheath seat fixing member 15, which is used for connecting the catheter sheath tube 20 and the balloon liquid component 4, and a sheath seat sealing member 16 is also provided between the catheter sheath tube 20 and the sheath seat fixing member 15; The dilator 1 includes a dilator tube body 27 and a catheter sheath fixing member 2, wherein the catheter sheath fixing member 2 is used to fix the dilator tube body 27 on the balloon inner member 3, so that the dilator tube body 27 is not easy to fall off or shift when the doctor is performing surgery; The housing assembly is also provided with a stainless steel fixing ring 17 for preventing the bending wire 19 from being damaged and a protective cap 18 for protecting the catheter sheath 20 from being easily bent, and the stainless steel fixing ring 17 is connected to the protective cap 18 .

[0029] In this embodiment, the dilator 1 is used for the introduction of interventional instruments or the delivery of auxiliary instruments. After the catheter sheath fixing piece 2 is assembled with the dilator 1, it is used to fix the dilator 1 on 3, so that the dilator 1 is not easy to fall or shift when the doctor is performing surgery. After the balloon liquid component 4 is assembled with the balloon membrane component 6, the hose body 23, and the pressurizing valve 24, it is used to inject physiological saline. The dilator 1 is inserted into the catheter sheath 20 through the liquid injection sealing valve 29. The pressurizing valve 24 pressurizes the valve, so that the dilator 1 is always kept in place in the sheath during the process of the catheter sheath 20 entering the patient's access blood vessel, and blood does not penetrate the outside of the product. 17]; the sheath seat seal 16 is used to improve the sealing performance of the catheter sheath 20 and the sheath seat fixing part 15 after assembly; the stainless steel fixing ring 17 is used to prevent the bending wire 19 from damaging the protective cap 18; the protective cap 18 is used to protect the catheter sheath 20 from being easily bent, etc.; the locking cap 7 is used to fix the guide shaft 8 and prevent the bending knob 9 from falling off; the bending wire 19 can be fixed by the fixed drawing ring 11, so that the bending wire 19 can move with the tooth block 12, and by rotating the bending knob 9, the tooth block 12 can reciprocate on the guide shaft 8 to control the bending distance; the extension tube body 21 is used to establish a passage so that contrast agents and the like can enter the sheath seat fixing part 15; the hose body 23 is used to establish a passage so that physiological saline can enter the injection type sealing valve 29; the syringe 25 is used to hold 3 ml of physiological saline.

[0030] In one embodiment of the present invention, see Figure 1-Figure 4 A developing ring 26 is also provided at the end of the catheter sheath tube 20 .

[0031] In this embodiment, the developing ring 26 is used to prevent the developing solution from flowing and splashing inside the body, thereby ensuring the uniformity of the developing.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A valve assist system sheath, comprising a housing assembly and a catheter sheath tube (20) disposed on the housing assembly, characterized in that: Also includes: a bending handle (28) for adjusting the angle of the distal end of the catheter sheath (20), wherein the bending handle (28) is connected to the housing assembly; A catheter sheath used to cooperate with a catheter sheath tube (20) to achieve the introduction of interventional instruments or the delivery of auxiliary instruments; and a flushing valve (22) for delivering medicine, wherein the flushing valve (22) is connected to the catheter sheath via an extension tube body (21).

2. The valve assist system sheath according to claim 1, characterized in that: The housing assembly comprises a left face shell (5) and a right face shell (14), and the left face shell (5) and the right face shell (14) are detachably connected.

3. The valve assist system sheath according to claim 1, characterized in that: The bending handle (28) comprises: A guide rail shaft (8) is fixedly mounted on the housing assembly, wherein a locking cap (7) is fixedly mounted on one end of the guide rail shaft (8) away from the housing assembly, and two groups of guide rail shafts (8) are provided; A bending knob (9) is rotatably mounted between the locking cap (7) and the housing assembly, and a tooth block (12) connected to the internal thread of the bending knob (9) is also slidably mounted on the guide rail shaft (8); And a bending adjustment wire (19) for adjusting the curvature, wherein one end of the bending adjustment wire (19) is connected to the catheter sheath (20), and the other end of the bending adjustment wire (19) is fixedly connected to the tooth block (12) via a fixed drawing ring (11).

4. The valve assist system sheath according to claim 3, characterized in that: The housing assembly is further provided with a stainless steel fixing ring (17) for preventing the bending wire (19) from being damaged and a protective cap (18) for protecting the catheter sheath (20) from being easily bent, and the stainless steel fixing ring (17) is connected to the protective cap (18).

5. The valve assist system sheath according to claim 3, characterized in that: The bending handle (28) further comprises a fixing ring B (10) and a fixing ring A (13) for enabling the bending knob (9) to rotate freely without any stuck phenomenon.

6. The valve assist system sheath according to claim 5, characterized in that: The fixing ring B (10) is used for connecting the bending knob (9) and the locking cap (7), and the fixing ring A (13) is used for connecting the bending knob (9) and the housing assembly.

7. The valve assist system sheath according to claim 1, wherein: The catheter sheath comprises a liquid injection sealing valve (29), a dilator (1), and a pressurizing valve (24) for use with the liquid injection sealing valve (29), wherein the pressurizing valve (24) and the liquid injection sealing valve (29) are connected via a hose body (23).

8. The valve assist system sheath according to claim 7, characterized in that: The liquid injection sealing valve (29) comprises: a balloon inner part (3) for positioning the expander (1), wherein the balloon inner part (3) is arranged in the housing assembly; A balloon membrane component (6), wherein the balloon membrane component (6) is connected to the balloon inner component (3) via a balloon liquid component (4); A sheath seat fixing member (15) is used for connecting the catheter sheath tube (20) and the balloon liquid component (4), and a sheath seat sealing member (16) is also provided between the catheter sheath tube (20) and the sheath seat fixing member (15).

9. The valve assist system sheath according to claim 8, characterized in that: The dilator (1) comprises a dilator tube body (27) and a catheter sheath fixing piece (2), wherein the catheter sheath fixing piece (2) is used to fix the dilator tube body (27) on the balloon inner piece (3).

10. The valve assist system sheath according to claim 1, wherein: The distal end of the catheter sheath (20) is further provided with a developing ring (26).

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