Fixing device for vascular intervention catheter

Abstract

The present invention provides a fixing device for a vascular interventional catheter, comprising a fixing part, wherein the fixing part is provided with a limiting part, the limiting part is connected to an elastic traction plate, and adjacent elastic traction plates are connected through an elastic compression plate, the plate body of the elastic compression plate is in an outer longitudinal folded shape, and an elastic pre-tightening force is formed between the two adjacent elastic compression plates and the elastic traction plate; the elastic compression plate is subjected to a vertical inner force, and the middle plate body of the elastic compression plate is in a vertical concave bending shape. After the vertical inner force applied to the elastic compression plate is withdrawn, the plate body of the elastic compression plate is in an inner longitudinal folded shape, and the lowest point of the vertical concave bending shape of the middle plate body of the elastic compression plate forms a pre-tightening force with the inguinal puncture point, thereby assisting in stretching the skin of the inguinal area, pulling out the indwelling sheath and pressing the puncture point at the same time, fixing the guide wire, avoiding arterial blood overflowing from the puncture point, and avoiding the guide wire sliding to cause the guide wire to pierce the blood vessel or slip out of the blood vessel, thereby reducing personnel assistance during the operation.

Description

Technical Field

[0001] The present 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 involves puncturing blood vessels and inserting instruments such as guidewires and catheters to diagnose and treat vascular lesions. It is a common minimally invasive procedure currently in use. Common vascular interventional procedures include vascular dilation, stenting, thrombectomy, and embolization, and have broad application prospects.

[0003] Common vascular interventional procedures are as follows:

[0004] 1. Insert the core needle and 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, place the catheter over the surface of the guide wire, and insert the catheter 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 smooth puncture. When pulling out the cannula, since the cannula 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 at the same time 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, pulling out the indwelling cannula and pressing 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 penetrate 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 through the following technical solutions: 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 portion 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 portion 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;

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

[0009] The highest point of the vertically convex bending shape of the elastic compression plate is subjected to a vertical inward 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 convex bending state;

[0010] After the vertical inward 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 inward 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 groin puncture point, and the side plates at both ends of the elastic compression plate are in a state of being bent toward each other in a horizontal manner and disappear.

[0011] Furthermore, the fixing member is made of hard material, and the lower surface of the fixing member is closely attached to the human skin through an adhesive connection. At least two of the fixing members 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 contains a transition fitting piece and a transition piece plate body. One end of the transition fitting piece 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 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.

[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 the 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, which is convenient for stretching the skin of the groin area. At the same time, since the elastic compression plate is subjected to the vertical inward force, 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, reducing personnel assistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is 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 schematic diagram showing the principle of elastic deformation of the middle plate of the 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 principle of elastic deformation of the end plate of the elastic compression plate subjected to a horizontal force component according to an embodiment of the present invention;

[0021] Figure 5 This is a side view of a 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 part; 3-limiting part; 4-elastic traction plate; 5a-transition fitting part; 5b-transition part plate body; 6-elastic compression plate; 6b-compression block; 6c-bending point. DETAILED DESCRIPTION

[0025] The present invention will be described in further 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 end of the upper surface of the fixing member 2. The two limiting members 3 and the setting of the limiting members 3 on the end side 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 area of ​​the inguinal puncture point 1a in the middle of the two limiting members 3.

[0027] In this embodiment, the limiting member 3 is connected to 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 the 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, and 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 groin area 1, so as to facilitate the stretching of the skin of the groin 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 the 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 mutually convex bending state, 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. At the end of the vertical concave bending shape of the middle plate body of the elastic compression plate 6, the lowest point is subjected to the continuous vertical inner force. Since the two end side plates of the elastic compression plate 6 are in a state of horizontal convex bending toward 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 of the transition block. When the bending point 6c moves to the transition block, the horizontal convex bending state of the two end side plates of the traction elastic compression plate 6 disappears, 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 a vertical concave bending shape forms a pre-tightening force with the groin puncture point 1a.

[0031] In this embodiment, the combined elastic action of the elastic traction plate 4 and the elastic compression plate 6 can form an elastic pre-tightening force between the two adjacent elastic compression plates 6 and the elastic traction plate 4, which is convenient for stretching the skin of the groin area 1. At the same time, since the elastic compression plate 6 is subjected to the vertical inward force, 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 facing transverse convex bending state under the 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 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, 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 tightly 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 to the end of the elastic compression plate 6 through a transition piece. 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. 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 to 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. The compression block 6b is made of soft silicone material.

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

[0036] S1 Installation: Fix the fixing member 2 to both sides of the groin area 1 by adhesive connection, more specifically, fix it to the lower abdomen of the groin area 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 parts 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 part 2 generates a force on the skin below the fixing part 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: The middle plate of the elastic compression plate 6 on one side is applied with an oblique downward force in the direction of the inguinal puncture point 1a. Under the continuous action of the force, the middle plate of the elastic compression plate 6 is deformed from a vertical convex bending state to a vertical concave bending state. The side plates at both ends of the elastic compression plate 6 undergo a transverse convex bending deformation toward 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 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 same method is used to make the lowest point of the middle plate of the elastic compression plate 6 on the other side in a vertically concave and bent state, and by squeezing the middle plate 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 intervention 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 prevent it from slipping out. The operator can operate the step of putting the cannula on the surface of the guide wire with both hands without the assistance of other personnel.

[0041] S6 Late-stage operation steps of vascular interventional surgery: Apply an upward force in the direction away from the inguinal puncture point 1a to the middle plate of the elastic compression plates 6 on both sides to release the compression state, restore the elastic compression plates 6 to the outer longitudinal folded shape toward the middle, and insert the catheter into the femoral artery along the guide wire to 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. This 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 fixation device for a vascular interventional catheter, characterized in that: The invention provides a plurality of fixing members, each of which is provided with at least two limiting members, wherein the limiting members are located at the end of the upper surface of the fixing member, and the limiting members are connected with one end of the elastic traction plate. The plate body of the elastic traction plate is arranged longitudinally, and the middle part of the plate body of the elastic traction 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, and the middle part of the plate body of the elastic compression plate is in a vertical convex bending shape. An elastic pre-tightening force is formed between the two adjacent elastic compression plates and the elastic traction plate. The horizontal distance between the elastic traction plate and the inguinal puncture point is a, the vertical distance between the other end of the elastic traction plate and the inguinal puncture point is b, the horizontal distance between the highest point of the vertical convex bend of the elastic compression plate and the inguinal puncture point is 2a, and the vertical distance between the highest point of the vertical convex bend of the elastic compression plate and the inguinal puncture point is c, where c>2b; The highest point of the vertically convex bending shape of the elastic compression plate is subjected to a vertical inward 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 convex bending state; After the vertical inward 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 inward 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 groin puncture point, and the side plates at both ends of the elastic compression plate are in a state of being bent toward each other in a horizontal manner and disappear.

2. The fixation 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 thigh skin.

3. The fixation 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. The fixation 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 contains a transition fitting piece and a transition piece plate body. One end of the transition fitting piece 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 fixation 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.

Images