A new type of cardiovascular interventional puncture device

Abstract

The utility model discloses a novel cardiovascular interventional puncture device, including a needle head, including a fixing plate; a puncture frame arranged on the fixing plate; a serrated disk rotatably arranged on both sides of the needle head, on which a protrusion is arranged to form a sliding fit with the puncture frame; a wedge-shaped portion slidably arranged on the needle head, which intermittently abuts against the serrated disk, and an elastic member is arranged between the two wedge-shaped portions to maintain a predetermined spacing. The fixing plate of the novel cardiovascular interventional puncture device is made of a flexible material and can be fixed to the puncture site of the patient by pasting with medical tape. The user rotates the needle head to adjust to a suitable puncture angle according to his or her clinical experience, and fixes the angle by the design of the serrated disk, and then drives the needle head to slide along the puncture frame, so that the needle head pierces the femoral artery of the patient at a predetermined angle. At this time, the position of the needle head is fixed, and the user's hands can perform other operations, which is convenient for the subsequent insertion of the guide wire.

Description

Technical Field

[0001] The utility model relates to the technical field of medical machinery, in particular to a novel cardiovascular intervention puncture device. Background Art

[0002] A new type of cardiovascular interventional puncture device is an instrument used for puncture operation in cardiovascular interventional surgery. This puncture device is usually used in cardiovascular interventional treatments such as cardiac catheter surgery, angioplasty, and interventional heart valve surgery.

[0003] In conjunction with publication number CN214049017U, publication date 2021-08-27, a cardiovascular interventional therapy device that is easy to adjust the puncture angle is disclosed.

[0004] In the prior art including the above patents, the handle is turned to drive the threaded rod, connecting rod, sleeve, syringe and needle and other structures to rotate slowly, and the inclination angle of the needle is continuously adjusted. When the needle reaches the appropriate position, it is aligned with the patient's blood vessel and inserted into the patient's blood vessel. The guide wire enters the inner wall of the piston, the inner wall of the left side of the syringe and the inner wall of the needle along the inside of the sealing plug, and finally inserted into the patient's blood vessel, thereby realizing the process of blood vessel puncture. The above technology adjusts the inclination position of the needle by turning the handle. The angle of turning the handle is not equal to the actual adjustment angle, which makes the operator's hand and eye inconsistent, lacks clinical feel, and is prone to errors. Utility Model Content

[0005] The purpose of the utility model is to provide a novel cardiovascular intervention puncture device to solve the above problems.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a novel cardiovascular intervention puncture device, including a needle head, including a fixing plate;

[0007] A puncture frame arranged on a fixed plate;

[0008] The sawtooth disks are rotatably arranged on both sides of the needle head, and are provided with protrusions to form a sliding fit with the puncture frame;

[0009] The wedge-shaped part is slidably arranged on the needle head, and intermittently abuts against the sawtooth disk, and an elastic member is arranged between the two wedge-shaped parts to maintain a predetermined distance.

[0010] Preferably, the puncture frame rotates relative to the fixed plate.

[0011] Preferably, the puncture frame comprises a pressing portion and a pressure rod, and the angle between the pressing portion and the pressure rod is an acute angle.

[0012] Preferably, a limit plate is movably provided inside the pressure rod, and a hook tongue portion for blocking the protrusion is provided at the first end of the limit plate.

[0013] Preferably, a gasket is provided at the second end of the limiting plate, and a fixing nail for pressing the gasket is fixedly provided on the upper side of the pressing portion.

[0014] Preferably, a limiting ring is provided on the gasket ring, and the limiting ring is coaxial with the fixing pin in a default state.

[0015] In the above technical scheme, a new type of cardiovascular interventional puncture device provided by the utility model has the following beneficial effects: the fixing plate is made of flexible material and can be fixed to the puncture site of the patient by sticking with medical tape. The user rotates the needle head to adjust to a suitable puncture angle according to his or her clinical experience, and fixes the angle by the design of the serrated disk, and then drives the needle head to slide along the puncture frame, so that the needle head pierces the patient's femoral artery at a predetermined angle. At this time, the position of the needle head is fixed, and the user's hands can perform other operations, which is convenient for the subsequent insertion of the guide wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 An overall three-dimensional schematic diagram provided for an embodiment of the utility model;

[0018] Figure 2 A schematic diagram of the structure of the fixing plate and the puncture frame provided in the embodiment of the utility model;

[0019] Figure 3 A schematic diagram of a sawtooth disk and a wedge-shaped portion provided in an embodiment of the utility model;

[0020] Figure 4 A schematic cross-sectional view of the pressure rod, the limiting plate and the fixing pin structure provided in an embodiment of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the limiting plate, gasket and limiting ring provided in an embodiment of the utility model.

[0022] Description of reference numerals:

[0023] 1. Fixing plate; 2. Puncture frame; 21. Pressing part; 22. Pressing rod; 23. Fixing nail; 24. Limiting plate; 241. Gasket ring; 242. Limiting ring; 3. Needle head; 31. Sawtooth disk; 32. Wedge-shaped part; 33. Elastic part; 4. Medical tape. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] like Figure 1-5 As shown, a novel cardiovascular interventional puncture device includes a needle head 3 and a fixing plate 1;

[0026] A puncture frame 2 is arranged on the fixed plate 1;

[0027] The sawtooth disk 31 is rotatably arranged on both sides of the needle head 3, and a protrusion is arranged on the sawtooth disk 31 to form a sliding fit with the puncture frame 2;

[0028] The wedge-shaped portion 32 slidably disposed on the needle head 3 abuts against the serrated disk 31 to fix the needle head 3 , and an elastic member 33 is disposed between the two wedge-shaped portions 32 to maintain a predetermined distance.

[0029] Specifically, the fixing plate 1 is made of flexible material and can be fixed to the puncture site of the patient by sticking medical tape 4, so that the fixing plate 1 is close to the patient's body, and a cotton pad is provided on the side of the fixing plate 1 close to the patient to absorb blood during the puncture process. The user adjusts the needle head 3 to a suitable puncture angle by rotating the needle head 3, and the needle head 3 and the serrated disk 31 rotate relative to each other. During the rotation process, the wedge-shaped portion 32 is pushed by the saw teeth on the serrated disk 31, and then intermittently clamped with the serrated disk 31 due to the elastic effect of the elastic member 33. After the angle is suitable, the user stops rotating the needle head 3, and the wedge-shaped portion 32 is abutted and locked with the serrated disk 31, so that the angle of the needle head 3 is fixed, and then the puncture is performed. The user drives the needle head 3 to slide along the puncture frame 2, so that the needle head 3 pierces the patient's femoral artery at a predetermined angle. At this time, the position of the needle head 3 is fixed, and the user's hands can perform other operations, which is convenient for the subsequent insertion of the guide wire.

[0030] In the above technology, the fixing plate 1 is made of a flexible material and can be fixed to the puncture site of the patient by sticking it with medical tape 4. The user rotates the needle head 3 to adjust it to a suitable puncture angle based on his or her clinical experience, and fixes the angle by the design of the serrated disk 31, and then drives the needle head 3 to slide along the puncture frame 2, so that the needle head 3 pierces the patient's femoral artery at a predetermined angle. At this time, the position of the needle head 3 is fixed, and the user's hands can perform other operations, which is convenient for the subsequent insertion of the guide wire.

[0031] As an embodiment further provided by the present invention, the puncture frame 2 includes a pressing portion 21 and a pressing rod 22, and the angle between the pressing portion 21 and the pressing rod 22 is an acute angle.

[0032] Specifically, the puncture frame 2 is a deformable structure. After the puncture is completed, the user pulls the needle head 3 out of the patient's puncture site along the direction of the pressure rod 22, and then presses the pressure rod 22 downward. Since the puncture frame 2 rotates relative to the fixed plate 1, the pressing portion 21 rotates downward as the pressure rod 22 is pressed downward, and presses the patient's skin to press the femoral artery where the puncture is completed, so as to press the guide wire, thereby ensuring that the guide wire will not be pulled out together during the process of pulling out the needle head 3.

[0033] As another embodiment further provided by the present invention, a limit plate 24 is movably provided inside the pressure rod 22, and a hook tongue portion for blocking the protrusion is provided at the first end of the limit plate 24.

[0034] Specifically, when the needle head 3 slides along the pressure rod 22, the protrusion on the serrated disk 31 is driven to slide inside the pressure rod 22. When the needle head 3 is about to slide out of the pressure rod 22, the protrusion is blocked by the hook tongue portion on the limiting plate 24 to avoid separation.

[0035] As another embodiment further provided by the present invention, a gasket ring 241 is provided at the second end of the limiting plate 24 , and a fixing nail 23 for pressing the gasket ring 241 is fixedly provided on the upper side of the pressing portion 21 .

[0036] Specifically, in the default state, the angle between the pressure rod 22 and the pressing portion 21 is fixed, and the end of the fixing pin 23 presses the gasket ring 241, so that the position of the limit plate 24 is fixed and the protrusion is kept blocked; when the user presses the pressure rod 22 downward, the puncture frame 2 is pressed and bent, and the angle between the pressure rod 22 and the pressing portion 21 is reduced. Since the limit plate 24 and the gasket ring 241 are both movably arranged in the pressure rod 22, and the fixing pin 23 is fixedly arranged on the pressing portion 21, when the pressure rod 22 is pressed, the limit plate 24 and the fixing pin 23 are close to each other, and the end of the fixing pin 23 no longer presses the gasket ring 241, and the limit plate 24 is in a free movable state. At this time, the needle head 3 is slid out along the pressure rod 22, and the protrusion will contact the limit plate 24 and drive the limit plate 24 to rotate, so that the hook tongue portion on the limit plate 24 no longer blocks the protrusion, and the needle head 3 can slide out of the pressure rod 22 for replacement or replacement with the vascular sheath holding channel.

[0037] As another embodiment further provided by the present invention, a limiting ring 242 is provided on the gasket ring 241 , and the limiting ring 242 is coaxial with the fixing pin 23 in a default state.

[0038] Specifically, after the user slides out the pressure rod 22, the limit plate 24 is driven by the protrusion to rotate, so that the gasket 241 rotates inside the pressure rod 22 and drives the limit ring 242 to rotate. At this time, the rotation axis of the limit ring 242 is the rotation axis of the gasket 241, and is no longer coaxial with the fixing nail 23. The user releases the pressure rod 22 at this time, and the pressure rod 22 releases its own elastic potential energy and returns to the default state with the pressing part 21, driving the distance between the fixing nail 23 and the limit plate 24 to shorten, and making the fixing nail 23 press against the gasket 241 and the upper end of the limit ring 242, so that the limit ring 242 returns to the default state and is coaxial with the fixing nail 23. At this time, the upper end of the limit ring 242 is pressed by the fixing nail 23, and the limit plate 24 returns to the state of blocking the protrusion.

[0039] Working principle: the fixing plate 1 is made of flexible material and can be fixed to the puncture site of the patient by sticking with medical tape 4, so that the fixing plate 1 is close to the patient's body, and a cotton pad is provided on the side of the fixing plate 1 close to the patient to absorb the blood during the puncture process. The user adjusts the needle head 3 to a suitable puncture angle, and the needle head 3 and the serrated disk 31 rotate relative to each other. During the rotation process, the wedge-shaped portion 32 is pushed by the saw teeth on the serrated disk 31, and then intermittently clamped with the serrated disk 31 due to the elastic effect of the elastic member 33. When the angle is suitable, the user stops rotating the needle head 3, and the wedge-shaped portion 32 and the serrated disk 31 abut and lock, so that the angle of the needle head 3 is fixed, and then puncture is performed. The user drives the needle head 3 to slide along the puncture frame 2, so that the needle head 3 pierces the patient's femoral artery at a predetermined angle. At this time, the position of the needle head 3 is fixed. After the puncture is completed, the user pulls the needle head 3 out of the patient's puncture site along the direction of the pressure rod 22, and then presses the pressure rod 22 downward. As the puncture frame 2 rotates relative to the fixed plate 1, the pressing portion 21 rotates downward with the pressing of the pressure rod 22, and presses the patient's skin to press the femoral artery where the puncture is completed, so as to press the guide wire. When the user presses the pressure rod 22 downward, the puncture is completed. The frame 2 is bent under pressure, and the angle between the pressure rod 22 and the pressing portion 21 is reduced. Since the limiting plate 24 and the gasket 241 are both movably arranged in the pressure rod 22, and the fixing nail 23 is fixedly arranged on the pressing portion 21, when the pressure rod 22 is pressed, the limiting plate 24 and the fixing nail 23 are close to each other, and the end of the fixing nail 23 no longer presses the gasket 241, and the limiting plate 24 is in a free movable state. At this time, the needle head 3 is slid out along the pressure rod 22, and the protrusion will contact the limiting plate 24 and drive the limiting plate 24 to rotate, so that the hook tongue portion on the limiting plate 24 no longer blocks the protrusion, and the needle head 3 can slide out of the pressure rod 22 for replacement. Or it is replaced with a vascular sheath holding channel. At this time, the rotating axis of the limiting ring 242 is the rotating axis of the gasket ring 241, and is no longer coaxial with the fixing pin 23. The user then releases the pressure rod 22. Due to the release of its own elastic potential energy, the pressure rod 22 and the pressing part 21 return to the default state, driving the distance between the fixing pin 23 and the limiting plate 24 to shorten, and making the fixing pin 23 press against the gasket ring 241, and press against the upper end of the limiting ring 242, so that the limiting ring 242 returns to the default state of being coaxial with the fixing pin 23. At this time, the upper end of the limiting ring 242 is pressed by the fixing pin 23, and the limiting plate 24 returns to the state of blocking the protrusion.

[0040] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A novel cardiovascular interventional puncture device, comprising a needle head (3), characterized in that: It comprises a fixing plate (1); A puncture frame (2) arranged on the fixed plate (1); A sawtooth disk (31) is rotatably arranged on both sides of the needle head (3), and a protrusion is arranged on the sawtooth disk to form a sliding fit with the puncture frame (2); A wedge-shaped portion (32) is slidably arranged on the needle head (3) and intermittently abuts against the sawtooth disk (31), and an elastic member (33) is arranged between the two wedge-shaped portions (32) to maintain a predetermined spacing.

2. A novel cardiovascular interventional puncture device according to claim 1, characterized in that: The puncture frame (2) rotates relative to the fixed plate (1).

3. A novel cardiovascular interventional puncture device according to claim 1, characterized in that: The puncture frame (2) comprises a pressing portion (21) and a pressing rod (22), and the angle between the pressing portion (21) and the pressing rod (22) is an acute angle.

4. A novel cardiovascular intervention puncture device according to claim 3, characterized in that: A limit plate (24) is movably arranged inside the pressure rod (22), and a hook tongue portion for blocking the protrusion is arranged at the first end of the limit plate (24).

5. A novel cardiovascular interventional puncture device according to claim 4, characterized in that: A gasket ring (241) is provided at the second end of the limiting plate (24), and a fixing nail (23) for pressing the gasket ring (241) is fixedly provided on the upper side of the pressing portion (21).

6. A novel cardiovascular interventional puncture device according to claim 5, characterized in that: A limiting ring (242) is provided on the gasket ring (241), and the limiting ring (242) is coaxial with the fixing pin (23) in a default state.

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