Fixing device for vascular intervention catheter

Abstract

The invention provides a vascular intervention catheter fixing device which comprises a fixing piece, the fixing piece is provided with a limiting piece, the limiting piece is connected with elastic traction plates, the adjacent elastic traction plates are connected through an elastic compression plate, and plate bodies of the elastic compression plates are in an outer side longitudinal folding form. Elastic pre-tightening force is formed between every two adjacent elastic compression plates and elastic traction plates; when the elastic compression plate is subjected to the vertical inner side acting force, the middle plate body of the elastic compression plate is in a vertical sunken and bent state, and after the vertical inner side acting force on the elastic compression plate is removed, the plate body of the elastic compression plate is in an inner side longitudinal folded state; the lowest point of the middle plate body of the elastic compression plate in the vertical sunken and bent state and a groin puncture point form pre-tightening force to assist in distraction of groin area skin, the puncture point is pressed while the indwelling cannula is pulled out, a guide wire is fixed, arterial blood is prevented from overflowing from the puncture point, and meanwhile the situation that the guide wire slides to break a blood vessel or slide out of the blood vessel is avoided. And personnel assistance in the operation process is reduced.

Description

Technical Field

[0001] The invention belongs to the field of medical devices, and in particular relates to a fixing device for a vascular intervention catheter. Background Art

[0002] Vascular interventional surgery is a method of diagnosing and treating vascular lesions by puncturing blood vessels and inserting guidewires, catheters and other instruments. It is a common minimally invasive surgery at this stage. Common vascular interventional surgeries include vascular dilation, vascular stents, vascular thrombectomy and vascular embolization, etc. Vascular interventional surgery has broad application prospects.

[0003] Common procedures for vascular interventional surgery are as follows:

[0004] 1. Insert the core needle and the indwelling cannula of the interventional needle into the femoral artery; 2. Pull out the core needle and insert the guide wire into the femoral artery through the indwelling cannula; 3. Pull out the indwelling cannula while pressing the puncture point, put the catheter on the surface of the guide wire, and insert it into the femoral artery along the guide wire; 4. Use the catheter to complete subsequent operations such as vascular dilation, vascular stenting, vascular thrombectomy, and vascular embolization.

[0005] During vascular interventional surgery, if the patient is obese or the groin cannot be fully exposed, the operator needs to stretch the skin in the groin area to ensure the smooth puncture. When pulling out the sheath, because the sheath is thicker than the guide wire, and the guide wire is thin and easy to slide, it is necessary to press the puncture point to prevent arterial blood from overflowing from the puncture point, and to prevent the guide wire from sliding and causing the guide wire to pierce the blood vessel or slip out of the blood vessel. Therefore, another staff member is needed to assist in putting the catheter on the outer surface of the guide wire to increase the staff assistance during the operation. Therefore, a new technology is needed to improve this solution. Summary of the invention

[0006] In response to the above-mentioned problems in the prior art, the present invention provides a fixing device for a vascular interventional catheter, which assists in stretching the skin in the groin area, pulls out the indwelling sheath and presses the puncture point at the same time to fix the guide wire, thereby preventing arterial blood from overflowing from the puncture point and preventing the guide wire from sliding and causing the guide wire to pierce the blood vessel or slip out of the blood vessel, thereby reducing the need for personnel assistance during the operation.

[0007] The present invention is implemented by the following technical scheme: a fixing device for a vascular intervention catheter, comprising at least two fixing members, each of the fixing members is provided with at least two limiting members, the limiting members are located at the end of the upper surface of the fixing member, the limiting members are connected with one end of an elastic traction plate, the plate body of the elastic traction plate is arranged longitudinally, the middle part of the plate body of the elastic plate is in a vertical convex bending state, the central axes of the plate bodies of two adjacent elastic traction plates are located on the same straight line, the other ends of the two adjacent elastic traction plates are connected by an elastic compression plate, the plate body of the elastic compression plate is in an outer longitudinal folded shape, the middle part of the plate body of the elastic compression plate is in a vertical convex bending shape, and an elastic pre-tightening force is formed between the two adjacent elastic compression plates and the elastic traction plate;

[0008] The horizontal distance from the elastic traction plate to the inguinal puncture point is a, the vertical distance from the other end of the elastic traction plate to the inguinal puncture point is b, the horizontal distance from the highest point of the vertical convex bending shape of the elastic compression plate to the inguinal puncture point is 2a, and the vertical distance from the highest point of the vertical convex bending shape of the elastic compression plate to the inguinal puncture point is c, c>2b;

[0009] The highest point of the vertically convex bending shape of the elastic compression plate is subjected to a vertical inner force, the middle plate body of the elastic compression plate is in a vertically concave bending shape, and the side plates at both ends of the elastic compression plate are in a mutually lateral convex bending state;

[0010] After the vertical inner force acting on the highest point of the vertical convex bending shape of the elastic compression plate is cancelled, the plate body of the elastic compression plate is in an inner longitudinal folded shape, the lowest point of the middle plate body of the elastic compression plate is in a vertical concave bending shape and forms a pre-tightening force with the inguinal puncture point, and the side plates at both ends of the elastic compression plate disappear in the state of being bent toward each other in a transverse convex manner.

[0011] Furthermore, the fixing piece is made of hard material, and the lower surface of the fixing piece is closely attached to the human skin through an adhesive connection, and at least two of the fixing pieces are fixed on both sides of the groin area, more specifically, fixed to the abdominal skin and thigh skin.

[0012] Furthermore, the elastic traction plate and the elastic compression plate are made of spring steel material.

[0013] Furthermore, the other end of the elastic traction plate is connected to the end of the elastic compression plate through a transition piece, and the transition piece includes a transition fitting and a transition piece plate body. One end of the transition fitting is tightly fitted with the upper surface of the other end of the adjacent elastic traction plate, and the other end of the transition piece is the transition piece plate body with a vertically arranged cross-section. The transition piece plate body is connected to the end of the elastic compression plate, and the cross-sectional profile of the transition piece plate body is consistent with the cross-sectional profile of the end of the elastic compression plate.

[0014] Furthermore, a compression block is provided at the lowest point of the middle plate body of the elastic compression plate in a vertically concave and bent shape, and the compression block is made of soft silicone material.

[0015] Beneficial Effects

[0016] The present invention can form an elastic pre-tightening force between two adjacent elastic compression plates and the elastic traction plate through the combined elastic action of the elastic traction plate and the elastic compression plate, so as to facilitate the stretching of the skin in the groin area. At the same time, because the elastic compression plate is subjected to a force acting inwardly in the vertical direction, the middle plate body of the elastic compression plate is elastically bent and deformed from a vertical convex bending state to a vertical concave bending state, so that the plate body of the elastic compression plate is in an inner longitudinal folded shape. The plate body of the elastic compression plate is in an inner longitudinal folded shape. The lowest point of the middle plate body of the elastic compression plate in the vertical concave bending shape forms a pre-tightening force with the groin puncture point, which can facilitate medical personnel to fix the guide wire by compressing the puncture point during interventional surgery. The operator can use both hands to perform the step of putting the catheter on the surface of the guide wire, thereby reducing personnel assistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram before compression according to an embodiment of the present invention;

[0018] Figure 2 A top view of an embodiment of the present invention;

[0019] Figure 3 This is a principle diagram of elastic deformation of the middle plate of an elastic compression plate subjected to a vertical force component according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram showing the elastic deformation of the end plate of the elastic compression plate subjected to the horizontal force component according to an embodiment of the present invention;

[0021] Figure 5 This is a side view of unilateral compression according to an embodiment of the present invention;

[0022] Figure 6 A three-dimensional diagram of a transition piece according to an embodiment of the present invention;

[0023] Figure 7 This is an enlarged side view of bilateral compression according to an embodiment of the present invention.

[0024] In the figure: 1-groin area; 1a-groin puncture point; 2-fixing member; 3-limiting member; 4-elastic traction plate; 5a-transition fitting member; 5b-transition member plate body; 6-elastic compression plate; 6b-compression block; 6c-bending point. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] like Figure 1-Figure 2 As shown, a fixing device for a vascular intervention catheter includes two fixing members 2, each of which is provided with two limiting members 3, and the limiting members 3 are located at the ends of the upper surface of the fixing member 2. The two limiting members 3 and the setting of the limiting members 3 at the end sides make the force on the fixing member 2 more uniform and do not affect the operator's operation of performing vascular intervention surgery in the inguinal puncture point 1a area in the middle of the two limiting members 3.

[0027] In this embodiment, the limit member 3 is connected with one end of the elastic traction plate 4, the plate body of the elastic traction plate 4 is arranged longitudinally, the middle part of the plate body of the elastic plate is in a vertically convex and bent state, the central axes of the plate bodies of two adjacent elastic traction plates 4 are located on the same straight line, and the other ends of the two adjacent elastic traction plates 4 are connected through an elastic compression plate 6, the plate body of the elastic compression plate 6 is in an outer longitudinal folded shape, the middle part of the plate body of the elastic compression plate 6 is in a vertically convex and bent shape, and an elastic pre-tightening force is formed between the two adjacent elastic compression plates 6 and the elastic traction plate 4, and at the same time, the fixing member 2 generates a force on the skin below the fixing member 2 away from the inguinal area 1, so as to facilitate the stretching of the skin of the inguinal area 1.

[0028] In this embodiment, the horizontal distance from the elastic traction plate 4 to the inguinal puncture point 1a is a, the vertical distance from the other end of the elastic traction plate 4 to the inguinal puncture point 1a is b, and the horizontal distance from the highest point of the vertical convex bending shape of the elastic compression plate 6 to the inguinal puncture point 1a is 2a. When the elastic compression plate 6 is elastically deformed, due to the release of elastic potential energy, the lowest point of the middle plate body of the elastic compression plate 6 in the vertical concave bending shape can reach the inguinal puncture point 1a. At the same time, since the vertical distance from the highest point of the vertical convex bending shape of the elastic compression plate 6 to the inguinal puncture point 1a is c, c>2b, the lowest point of the middle plate body of the elastic compression plate 6 in the vertical concave bending shape can form a pre-tightening force with the inguinal puncture point 1a.

[0029] In this embodiment, if Figure 3-Figure 4As shown, the highest point of the vertical convex bending shape of the elastic compression plate 6 is subjected to a vertical inner force, and the vertical component of the force causes the middle plate body of the elastic compression plate 6 to undergo reverse elastic deformation. The middle plate body of the elastic compression plate 6 is in a vertical concave bending shape, and the horizontal component of the force causes elastic deformation. The side plates at both ends of the elastic compression plate 6 are in a state of laterally convex bending toward each other, and due to the continuous addition of the force, the bending amplitude gradually increases.

[0030] In this embodiment, if Figure 5 As shown, after the vertical inner force acting on the highest point of the vertical convex bending shape of the elastic compression plate 6 is cancelled, the elasticity of the elastic compression plate 6 is completely released. Since the lowest point of the middle plate body of the elastic compression plate 6 is in the vertical concave bending shape and is subjected to the continuous vertical inner force at the end, since the two end side plates of the elastic compression plate 6 are in a state of horizontal convex bending towards each other, and the bending amplitude gradually increases, the bending points 6c of the two end side plates of the traction elastic compression plate 6 move toward the direction close to the transition block. When the bending points 6c move to the transition block, the horizontal convex bending states of the two end side plates of the traction elastic compression plate 6 disappear, so that the plate body of the elastic compression plate 6 is in an inner longitudinal folding shape. The plate body of the elastic compression plate 6 is in an inner longitudinal folding shape, and the lowest point of the middle plate body of the elastic compression plate 6 in the vertical concave bending shape forms a pre-tightening force with the inguinal puncture point 1a.

[0031] In this embodiment, through the combined elastic action of the elastic traction plate 4 and the elastic compression plate 6, an elastic pre-tightening force can be formed between the two adjacent elastic compression plates 6 and the elastic traction plate 4, so as to facilitate the stretching of the skin of the groin area 1. At the same time, since the elastic compression plate 6 is subjected to a force acting inwardly in the vertical direction, the middle plate body of the elastic compression plate 6 is elastically bent and deformed from a vertical convex bending state to a vertical concave bending state. Since the side plates at both ends of the elastic compression plate 6 form a mutually lateral convex bending state under continuous force, and the bending amplitude gradually increases, the bending points of the side plates at both ends of the traction elastic compression plate 6 move toward the direction close to the transition block. When The bending point moves to the transition block, and the opposing transverse convex bending states of the two end side plates of the pulling elastic compression plate 6 disappear, so that the plate body of the elastic compression plate 6 is in an inner longitudinal folded shape. Since the vertical distance from the highest point of the vertical convex bending shape of the elastic compression plate 6 to the inguinal puncture point 1a is greater than 2b, the lowest point of the middle plate body of the elastic compression plate 6 in a vertical concave bending shape can form a pre-tightening force with the inguinal puncture point 1a, which can facilitate medical personnel to pull out the indwelling sheath and press the puncture point at the same time during interventional surgery, thereby reducing personnel assistance during the operation.

[0032] In this embodiment, the fixing member 2 is made of hard material, and the lower surface of the fixing member 2 is closely attached to the human skin through adhesive connection. At least two fixing members 2 are fixed on both sides of the groin area 1, more specifically, fixed to the abdominal skin and thigh skin.

[0033] In this embodiment, if Figure 6 As shown, the other end of the elastic traction plate 4 is connected with the end of the elastic compression plate 6 through a transition piece, and the transition piece contains a transition fitting piece 5a and a transition piece plate body 5b. One end of the transition fitting piece 5a is tightly fitted with the upper surface of the other end of the adjacent elastic traction plate 4, and the other end of the transition piece is the transition piece plate body 5b with a vertical cross-section. The transition piece plate body 5b is connected with the end of the elastic compression plate 6, and the cross-sectional profile of the transition piece plate body 5b is consistent with the cross-sectional profile of the end of the elastic compression plate 6.

[0034] In this embodiment, a compression block 6b is provided at the lowest point of the middle plate body of the elastic compression plate 6 in a vertically concave and bent shape, and the compression block 6b is made of soft silicone material.

[0035] The working principle of this embodiment is as follows:

[0036] S1 Installation: The fixing member 2 is fixed to both sides of the inguinal region 1 by adhesive connection, more specifically, fixed to the lower abdomen of the inguinal region 1 and the upper surface of the thigh root.

[0037] S2 connection: fix the whole formed by the elastic traction plate 4-elastic compression plate 6-elastic traction plate 4 on two adjacent limiting members 3, so that an elastic pre-tightening force is formed between the two adjacent elastic compression plates 6 and the elastic traction plate 4, and at the same time, the fixing member 2 exerts a force on the skin below the fixing member 2 away from the groin area 1, so as to facilitate the stretching of the skin of the groin area 1, and fix the whole formed by the elastic traction plate 4-elastic compression plate 6-elastic traction plate 4 on the other side in the same way.

[0038] S3 Preliminary operation steps for vascular interventional surgery: insert the core needle and the indwelling cannula of the interventional needle into the femoral artery, pull out the core needle, insert the guide wire into the femoral artery through the indwelling cannula, and pull out the indwelling cannula.

[0039] S4 compression: an oblique downward force is applied to the middle plate body of the elastic compression plate 6 on one side in the direction of the inguinal puncture point 1a. Under the continuous action of the force, the middle plate body of the elastic compression plate 6 is deformed from a vertical convex bending state to a vertical concave bending state, and the side plates at both ends of the elastic compression plate 6 undergo a transverse convex bending deformation relative to each other, and its bending point moves toward the transition block. When the bending point moves to the transition block, the elastic compression plate 6 as a whole is elastically deformed from an outer longitudinal folding shape to an inner longitudinal folding shape, so that the lowest point of the middle plate body of the elastic compression plate 6 in the vertical concave bending shape forms a pre-tightening force with the inguinal puncture point 1a, compressing the inguinal puncture point 1a and fixing the guide wire at the same time. Figure 7 As shown, the lowest point of the middle plate body of the vertically concave and bent state of the elastic compression plate 6 on the other side is made by the same method. By squeezing the middle plate body of the elastic compression plate 6 on the other side, the outer side surface of the middle plate body of the elastic compression plate 6 on the other side is inserted into the inner side surface of the middle plate body of the elastic compression plate 6 on one side, and the two plates are superimposed to generate enhanced compression force.

[0040] S5 Mid-term operation steps of vascular interventional surgery: Through the pre-tightening force generated on the puncture point by this embodiment, the puncture point is compressed to avoid arterial blood leakage, and the guide wire is properly fixed to avoid slipping out. The operator can operate the step of putting the sheath on the surface of the guide wire with both hands without the assistance of other personnel.

[0041] S6 Late operation steps of vascular intervention surgery: Apply an upward force away from the inguinal puncture point 1a to the middle plate body of the elastic compression plates 6 on both sides to release the compression state, restore the elastic compression plates 6 to an outer longitudinal folded shape toward the middle, insert the catheter into the femoral artery along the guide wire, and complete subsequent vascular dilation, vascular stenting, vascular thrombectomy, vascular embolization and other operations through the catheter.

[0042] The present invention has been specifically described above in conjunction with the embodiments. Without departing from the core scope of the present invention, various improvements can still be made, and equivalents can be used to replace the components therein. As long as there is no structural conflict, the various features in the embodiments disclosed in the present invention can be used in combination with each other in any way. These combinations are not exhaustively described in this specification, which is only for the purpose of saving space and resources. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed herein, but covers all technical solutions that fall within the scope of the claims.

Claims

1. A fixing device for a vascular intervention catheter, characterized in that: The invention comprises at least two fixing members, each of which is provided with at least two limiting members, the limiting members are located at the ends of the upper surface of the fixing members, the limiting members are connected with one end of the elastic traction plate, the plate body of the elastic traction plate is arranged longitudinally, the middle part of the plate body of the elastic plate is in a vertically convex and bent state, the central axes of the plate bodies of two adjacent elastic traction plates are located on the same straight line, the other ends of the two adjacent elastic traction plates are connected by an elastic compression plate, the plate body of the elastic compression plate is in an outer longitudinal folded shape, the middle part of the plate body of the elastic compression plate is in a vertically convex and bent shape, and an elastic pre-tightening force is formed between the two adjacent elastic compression plates and the elastic traction plate; The horizontal distance from the elastic traction plate to the inguinal puncture point is a, the vertical distance from the other end of the elastic traction plate to the inguinal puncture point is b, the horizontal distance from the highest point of the vertical convex bending shape of the elastic compression plate to the inguinal puncture point is 2a, and the vertical distance from the highest point of the vertical convex bending shape of the elastic compression plate to the inguinal puncture point is c, c>2b; The highest point of the vertically convex bending shape of the elastic compression plate is subjected to a vertical inner force, the middle plate body of the elastic compression plate is in a vertically concave bending shape, and the side plates at both ends of the elastic compression plate are in a mutually lateral convex bending state; After the vertical inner force acting on the highest point of the vertical convex bending shape of the elastic compression plate is cancelled, the plate body of the elastic compression plate is in an inner longitudinal folded shape, the lowest point of the middle plate body of the elastic compression plate is in a vertical concave bending shape and forms a pre-tightening force with the inguinal puncture point, and the side plates at both ends of the elastic compression plate disappear in the state of being bent toward each other in a transverse convex manner.

2. A fixing device for a vascular intervention catheter according to claim 1, characterized in that: The fixing piece is made of hard material, and the lower surface of the fixing piece is closely attached to the human skin through adhesive connection. At least two fixing pieces are fixed on both sides of the groin, more specifically, fixed on the abdominal skin and the thigh skin.

3. A fixing device for a vascular intervention catheter according to claim 1, characterized in that: The elastic traction plate and the elastic compression plate are made of spring steel material.

4. A fixing device for a vascular intervention catheter according to claim 1, characterized in that: The other end of the elastic traction plate is connected to the end of the elastic compression plate through a transition piece. The transition piece includes a transition fitting and a transition piece plate body. One end of the transition fitting is tightly fitted with the upper surface of the other end of the adjacent elastic traction plate. The other end of the transition piece is the transition piece plate body with a vertical cross-section. The transition piece plate body is connected to the end of the elastic compression plate, and the cross-sectional profile of the transition piece plate body is consistent with the cross-sectional profile of the end of the elastic compression plate.

5. The fixing device for a vascular intervention catheter according to claim 1, characterized in that: A compression block is provided at the lowest point of the middle plate body of the elastic compression plate in a vertically concave and bent shape, and the compression block is made of soft silicone material.

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