An invasive arterial puncture needle

Abstract

The utility model relates to an invasive arterial puncture needle, which adopts a new structural design, divides a hose into a front hose (1) and a rear hose (2), and adds a central adapter device (3) for front and rear connection. The central adapter device (3) switches the operation to realize the front hose (1) and the rear hose (2) are connected in a straight line in a corresponding manner, or directly disconnected from each other, and then the puncture needle (5) is used to perform a puncture operation in the connected state, and the arterial blood overflow is timely blocked when the puncture needle (5) is withdrawn. The central adapter device (3) is specifically designed with a double sleeve structure, and the switching of connection or disconnection is quickly realized by rotating, thereby effectively improving the actual operation efficiency of the arterial puncture needle.

Description

Technical Field

[0001] The utility model relates to an invasive arterial puncture needle and belongs to the technical field of medical equipment. Background Art

[0002] An arterial puncture needle is an instrument used for arteries. It has a special design and composition. It is usually composed of a hose and a puncture needle. The arterial puncture operation is performed based on the combined structure of the puncture needle penetrating into the hose, and the hose and the artery are connected by withdrawing the puncture needle. Then, an external catheter is connected to the end of the hose. However, during actual operation, due to the pressure in the artery, the blood in the artery will flow out through the hose during the withdrawal of the puncture needle, causing blood overflow. Therefore, the operator will press the artery hard to block the overflow of blood in the artery when the puncture needle is withdrawn. However, such operation often causes damage to the epidermis at the pressing position, increases the cumbersomeness of the operator's operation, and reduces work efficiency. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an invasive arterial puncture needle, which introduces a central switching device, and conveniently realizes the switching of the hose connection or disconnection during the process of the puncture needle withdrawing from the hose, thereby avoiding the overflow of blood in the artery and improving the actual operation efficiency.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: the utility model designs an invasive arterial puncture needle, including a front hose, a rear hose, a middle adapter, a terminal rear connection device, and a puncture needle;

[0005] The inner diameter of the front hose is the same as the inner diameter of the rear hose, and the inner diameter is adapted to the outer diameter of the puncture needle; the two sides of the central adapter are opposite to each other and have side interfaces, the inner diameters of the two side interfaces are larger than the outer diameter of the puncture needle, and the interior of the central adapter is isolated from the external environment except for the two side interfaces, and the central adapter works to realize the switching between the two side interfaces to be connected or disconnected;

[0006] One end of the front hose is connected to one side interface of the central adapter, and one end of the rear hose is connected to the other side interface of the central adapter. When the two side interfaces on the central adapter are connected, the center line of the front hose in a straight line posture and the center line of the rear hose in a straight line posture are collinear, and the front hose is connected to the rear hose.

[0007] The terminal rear-connecting device is a cylindrical structure with one end open and the other end closed, and a through hole penetrating the inner and outer spaces of the cylindrical structure is provided on the closed end of the cylindrical structure, the diameter of the through hole is the same as the diameter of the rear hose, the other end of the rear hose is connected to the through hole on the terminal rear-connecting device from the outside of the terminal rear-connecting device, and the center line of the rear hose in a corresponding straight line posture is colinear with the center line of the cylindrical structure of the terminal rear-connecting device;

[0008] Based on the connection between the two side interfaces on the middle adapter device, and the front hose and the rear hose are both in a corresponding straight line posture, the front end of the puncture needle can be retracted from the open end of the terminal rear connecting device to pass through the terminal rear connecting device, the rear hose, the middle adapter device, and the front hose in sequence, and pass out from the other end of the front hose, and the tail end of the puncture needle protrudes from the outside of the open end of the terminal rear connecting device.

[0009] As an optimal technical solution of the utility model: the central transfer device includes a first cylindrical body and a second cylindrical body, wherein one end face of the first cylindrical body is open and the other end face is closed, and both end faces of the second cylindrical body are closed, the inner diameter of the first cylindrical body is adapted to the outer diameter of the second cylindrical body, protrusions are arranged on the inner side surface of the first cylindrical body, the protrusions are coplanar, and the coplanarity is perpendicular to the center line of the first cylindrical body, a closed-loop recessed groove is arranged on the outer side surface of the second cylindrical body, and the plane where the closed-loop recessed groove is located is perpendicular to the center line of the second cylindrical body, and the outer diameter of the cross-section of the protrusion on the inner side surface of the first cylindrical body is adapted to the inner diameter of the cross-section of the closed-loop recessed groove on the outer side surface of the second cylindrical body, the open end of the first cylindrical body and one of the closed end faces of the second cylindrical body are arranged relative to each other, and each protrusion on the inner side surface of the first cylindrical body is movably embedded in the closed-loop recessed groove on the outer side surface of the second cylindrical body, and the first cylindrical body The center line of the cylindrical body is collinear with the center line of the second cylindrical body, and the first cylindrical body and the second cylindrical body rotate relative to each other around the collinearity as the axis; a through hole with a diameter the same as that of the side interface and passing through both sides of the closed end is arranged at a non-center position on the closed end face of the first cylindrical body, the side of the through hole facing outward is connected to one of the side interfaces, and the center line of the connected side interface passes through the center of the through hole; a through hole of the same diameter is arranged on the closed end face of the second cylindrical body facing the inside of the first cylindrical body at a position corresponding to the through hole on the first cylindrical body, and a through hole of the same diameter is arranged on the other closed end face of the second cylindrical body, the side of the through hole facing outward is connected to the other side interface, and the center line of the connected side interface passes through the center of the through hole; a center line connecting the two through holes on the two closed end faces of the second cylindrical body is perpendicular to the end faces, and based on the relative rotation between the first cylindrical body and the second cylindrical body, switching between connection or disconnection of the two side interfaces is realized.

[0010] As a preferred technical solution of the present utility model: the height of the first cylindrical body is not greater than the height of the second cylindrical body.

[0011] As a preferred technical solution of the utility model: the front hose, the rear hose, the middle adapter, and the terminal rear connection device are all made of transparent materials.

[0012] The invasive arterial puncture needle of the utility model adopts the above technical solution and has the following technical effects compared with the prior art:

[0013] The utility model designs an invasive arterial puncture needle, which adopts a new structural design, divides the hose into a front hose and a rear hose, and adds a central adapter to connect the front and rear, and realizes the front hose and the rear hose are connected in a straight line respectively, or directly disconnected, through the working switching of the central adapter, so that the puncture needle is matched to perform the puncture operation in the connected state, and the arterial blood overflow is blocked in time when the puncture needle is withdrawn, and the double sleeve structure is specifically designed for the central adapter, and the switching of connection or disconnection is quickly realized by rotation, which effectively improves the actual operation efficiency of the arterial puncture needle. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the combined puncture needle of the utility model designed for invasive arterial puncture needle;

[0015] Figure 2 This is a schematic diagram of the application of the invasive arterial puncture needle designed by the utility model corresponding to step C to step D;

[0016] Figure 3 The utility model is a schematic diagram of the structure of the detached puncture needle of the invasive arterial puncture needle.

[0017] Among them, 1. front hose, 2. rear hose, 3. middle adapter, 3-1. side interface, 3-2. first cylindrical body, 3-3. second cylindrical body, 3-4. protrusion, 3-5. closed-loop recessed groove, 4. terminal rear connection device, 5. puncture needle. DETAILED DESCRIPTION

[0018] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0019] The utility model is designed to provide an invasive arterial puncture needle, which can be used in practical applications. Figures 1 to 3 As shown, the specific design includes a front hose 1, a rear hose 2, a middle adapter 3, a terminal rear connection device 4, and a puncture needle 5.

[0020] Among them, the inner diameter of the front hose 1 is the same as the inner diameter of the rear hose 2, and the inner diameter is adapted to the outer diameter of the puncture needle 5; the two sides opposite to each other on the central adapter 3 are respectively provided with side interfaces 3-1, and the inner diameters of the two side interfaces 3-1 are larger than the outer diameter of the puncture needle 5. Except for the two side interfaces 3-1, the rest of the interior of the central adapter 3 is isolated from the external environment. The central adapter 3 works to realize the switching of the connection or disconnection between its two side interfaces 3-1, such as Figure 2 and Figure 3 shown.

[0021] Regarding the central switching device 3, in actual application, Figure 1 As shown, the specific design includes a first cylindrical body 3-2 and a second cylindrical body 3-3, wherein one end face of the first cylindrical body 3-2 is open and the other end face is closed, both end faces of the second cylindrical body 3-3 are closed, the inner diameter of the first cylindrical body 3-2 is adapted to the outer diameter of the second cylindrical body 3-3, the height of the first cylindrical body 3-2 is not greater than the height of the second cylindrical body 3-3, protrusions 3-4 are arranged on the inner side surface of the first cylindrical body 3-2, the protrusions 3-4 are coplanar, and the coplanarity is perpendicular to the center line of the first cylindrical body 3-2, and the first cylindrical body 3-2 is provided with a plurality of protrusions 3-4. A closed-loop concave groove 3-5 is arranged on the outer side of the second cylindrical body 3-3, and the plane where the closed-loop concave groove 3-5 is located is perpendicular to the center line of the second cylindrical body 3-3, and the outer diameter of the cross-section of the protrusion 3-4 on the inner side of the first cylindrical body 3-2 is adapted to the inner diameter of the cross-section of the closed-loop concave groove 3-5 on the outer side of the second cylindrical body 3-3, the open end of the first cylindrical body 3-2 and one of the closed end faces of the second cylindrical body 3-3 are arranged relative to each other, and each protrusion 3-4 on the inner side of the first cylindrical body 3-2 is movably embedded in the closed-loop groove 3-5 on the outer side of the second cylindrical body 3-3 The first cylindrical body 3-2 and the second cylindrical body 3-3 are collinear in the concave groove 3-5, and the center line of the first cylindrical body 3-2 and the center line of the second cylindrical body 3-3 are collinear, and the first cylindrical body 3-2 and the second cylindrical body 3-3 rotate relative to each other around the collinear axis; a through hole with the same diameter as the side interface 3-1 and penetrating both sides of the closed end is arranged at a non-center position on the closed end surface of the first cylindrical body 3-2, and the side of the through hole facing the outside is connected to one of the side interfaces 3-1, and the center line of the connected side interface 3-1 passes through the center of the through hole, and the second cylindrical body 3-3 faces the inside of the first cylindrical body 3-2 A through hole of the same caliber is arranged on the closed end face corresponding to the through hole on the first cylindrical body 3-2, and a through hole of the same caliber is arranged on the other closed end face of the second cylindrical body 3-3. The side of the through hole facing outward is connected to the other side interface 3-1, and the center line of the connected side interface 3-1 passes through the center of the through hole. The center line of the two through holes on the two closed end faces of the second cylindrical body 3-3 is perpendicular to the end faces. Based on the relative rotation between the first cylindrical body 3-2 and the second cylindrical body 3-3, the switching of connection or disconnection between the two side interfaces 3-1 is realized.

[0022] like Figure 1 As shown, one end of the front hose 1 is connected to one side interface 3-1 on the central adapter 3, and one end of the rear hose 2 is connected to the other side interface 3-1 on the central adapter 3. When the two side interfaces 3-1 on the central adapter 3 are connected, the center line of the front hose 1 in a straight line posture and the center line of the rear hose 2 in a straight line posture are colinear, and the front hose 1 is connected to the rear hose 2.

[0023] The terminal rear-connecting device 4 is a cylindrical structure with one end open and the other end closed, and a through hole penetrating the inner and outer spaces of the cylindrical structure is provided on the closed end, and the diameter of the through hole is the same as the diameter of the rear hose 2, and the other end of the rear hose 2 is connected to the through hole on the terminal rear-connecting device 4 from the outside of the terminal rear-connecting device 4, and the center line of the rear hose 2 in the corresponding straight line posture is colinear with the center line of the cylindrical structure of the terminal rear-connecting device 4;

[0024] like Figure 1 As shown, based on the connection between the two side interfaces 3-1 on the middle adapter 3, and the front hose 1 and the rear hose 2 are both in a corresponding straight line posture, the front end of the puncture needle 5 can be retractedly inserted from the open end of the terminal rear connecting device 4, and pass through the terminal rear connecting device 4, the rear hose 2, the middle adapter 3, and the front hose 1 in sequence, and pass out from the other end of the front hose 1, and the tail end of the puncture needle 5 protrudes from the outside of the open end of the terminal rear connecting device 4.

[0025] The invasive arterial puncture needle designed in the above scheme, in actual application, the front hose 1, the rear hose 2, the middle adapter 3, and the terminal rear connection device 4 are all made of transparent materials.

[0026] The invasive arterial puncture needle designed by the above technical solution is operated according to the following steps in actual application.

[0027] Step A. Figure 3 As shown, the first cylindrical body 3-2 and the second cylindrical body 3-3 are rotated relative to each other to achieve communication between the two side interfaces 3-1, and based on the front hose 1 and the rear hose 2 are both in a straight line posture, as shown in FIG. Figure 1 As shown, the front end of the puncture needle 5 passes through the open end of the terminal rear-connecting device 4, passes through the terminal rear-connecting device 4, the rear hose 2, the middle adapter 3, and the front hose 1 in sequence, and passes through the other end of the front hose 1, and the tail end of the puncture needle 5 protrudes outside the open end of the terminal rear-connecting device 4, and maintains a relatively fixed relationship between the structural positions;

[0028] Step B. Grasp the whole structure of the puncture needle 5, the rear-end connecting device 4, the rear hose 2, the middle connecting device 3, and the front hose 1 by hand, insert the front end of the puncture needle 5 into the designated artery position of the target person, and insert the front hose 1 into the artery for a preset length. At this time, the blood overflowing due to the arterial pressure flows from the front hole of the puncture needle 5 into the puncture needle 5, but because there is a blockage at the end of the puncture needle 5, the blood flowing into the puncture needle 5 stops at most when it flows to the end of the puncture needle 5, and will not overflow to the outside;

[0029] Step C. Keep the position of the front hose 1 fixed between the front hose 1 and the artery it extends into. Figure 2 As shown, the front end of the puncture needle 5 is withdrawn backward, passes through the front hose 1 and the middle adapter 3 in sequence, and stops in the rear hose 2. Since the puncture needle 5 occupies the position in the rear hose 2 at this time, the blood in the artery only flows to the front hose 1 and the middle adapter 3 at this time;

[0030] Step D. Figure 2 As shown, the first cylindrical body 3-2 and the second cylindrical body 3-3 are rotated relative to each other to realize the disconnection between the two side interfaces 3-1 on the central adapter 3. At this time, the blood flowing outward in the artery is stopped at the disconnection position between the two side interfaces 3-1, and the front end of the puncture needle 5 continues to be withdrawn from the rear hose 2 and the terminal rear connection device 4 in sequence;

[0031] Step E. Connect the open end of the terminal rear connection device 4 to a pipeline according to actual application requirements, such as Figure 3 As shown, the first cylindrical body 3-2 and the second cylindrical body 3-3 are then rotated relative to each other to achieve communication between the two side interfaces 3-1 thereon, and the blood flowing out of the artery continues to flow to the external pipeline through the rear hose 2 and the terminal rear connection device 4 to achieve application.

[0032] The invasive arterial puncture needle designed by the above technical solution adopts a new structural design, divides the hose into a front hose 1 and a rear hose 2, and adds a central adapter device 3 for front and rear connection. The front hose 1 and the rear hose 2 are respectively connected in a straight line posture, or directly disconnected from each other through the working switching of the central adapter device 3, and then the puncture needle 5 is used for puncture operation in the connected state, and the arterial blood overflow is blocked in time when the puncture needle 5 is withdrawn. The double-sleeve structure is specifically designed for the central adapter device 3, and the connection or disconnection switching is quickly realized by rotation, which effectively improves the actual operation efficiency of the arterial puncture needle.

[0033] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. An invasive arterial puncture needle, characterized in that: It comprises a front hose (1), a rear hose (2), a middle adapter (3), a terminal rear connection device (4), and a puncture needle (5); The inner diameter of the front hose (1) is the same as the inner diameter of the rear hose (2), and the inner diameter is adapted to the outer diameter of the puncture needle (5); the two sides of the central adapter (3) opposite to each other are provided with side interfaces (3-1), the inner diameters of the two side interfaces (3-1) are larger than the outer diameter of the puncture needle (5); the interior of the central adapter (3) is isolated from the external environment except for the two side interfaces (3-1); the central adapter (3) works to realize the switching of connection or disconnection between the two side interfaces (3-1); One end of the front hose (1) is connected to one side interface (3-1) on the central adapter (3), and one end of the rear hose (2) is connected to the other side interface (3-1) on the central adapter (3). When the two side interfaces (3-1) on the central adapter (3) are in a connected state, the center line of the front hose (1) in a corresponding straight line posture and the center line of the rear hose (2) in a corresponding straight line posture are collinear, and the front hose (1) is connected to the rear hose (2); The terminal rear-connecting device (4) is a cylindrical structure with one end open and the other end closed, and a through hole penetrating the inner and outer spaces of the cylindrical structure is provided on the closed end, the diameter of the through hole being the same as the diameter of the rear hose (2), the other end of the rear hose (2) is butt-jointed with the through hole on the terminal rear-connecting device (4) from the outside of the terminal rear-connecting device (4), and the center line of the rear hose (2) in a corresponding straight line posture is colinear with the center line of the cylindrical structure of the terminal rear-connecting device (4); Based on the communication between the two side interfaces (3-1) on the middle adapter device (3), and the front hose (1) and the rear hose (2) both being in a corresponding straight line posture, the front end of the puncture needle (5) can be retractedly inserted from the open end of the terminal rear connection device (4) and sequentially passes through the terminal rear connection device (4), the rear hose (2), the middle adapter device (3), and the front hose (1), and then passes out from the other end of the front hose (1), and the tail end of the puncture needle (5) protrudes outside the open end of the terminal rear connection device (4).

2. An invasive arterial puncture needle according to claim 1, characterized in that: The central transfer device (3) comprises a first cylindrical body (3-2) and a second cylindrical body (3-3), wherein one end face of the first cylindrical body (3-2) is open and the other end face is closed, and both end faces of the second cylindrical body (3-3) are closed, the inner diameter of the first cylindrical body (3-2) is adapted to the outer diameter of the second cylindrical body (3-3), protrusions (3-4) are arranged on a circumference of the inner side face of the first cylindrical body (3-2), the protrusions (3-4) are coplanar, and the coplanar faces are perpendicular to the center line of the first cylindrical body (3-2), and the outer side face of the second cylindrical body (3-3) is arranged on a circumference of the outer side face of the second cylindrical body (3-3). A closed-loop recessed groove (3-5) is arranged, and the plane where the closed-loop recessed groove (3-5) is located is perpendicular to the center line of the second cylindrical body (3-3), and the outer diameter of the cross-section of the protrusion (3-4) on the inner side surface of the first cylindrical body (3-2) is adapted to the inner diameter of the cross-section of the closed-loop recessed groove (3-5) on the outer side surface of the second cylindrical body (3-3), the open end of the first cylindrical body (3-2) and one of the closed end surfaces of the second cylindrical body (3-3) are arranged relative to each other, and each protrusion (3-4) on the inner side surface of the first cylindrical body (3-2) is movably embedded in the closed-loop recessed groove (3-5) on the outer side surface of the second cylindrical body (3-3). ), and the center line of the first cylindrical body (3-2) and the center line of the second cylindrical body (3-3) are collinear, and the first cylindrical body (3-2) and the second cylindrical body (3-3) rotate relative to each other with the collinear axis as the axis; a through hole with the same diameter as the side interface (3-1) and penetrating through both sides of the closed end is arranged at a non-center position on the closed end surface of the first cylindrical body (3-2), and the through hole is connected to one of the side interfaces (3-1) on the side facing the outside, and the center line of the connected side interface (3-1) passes through the center of the through hole, and the upper side of the second cylindrical body (3-3) faces the inside of the first cylindrical body (3-2) A through hole of the same caliber is arranged at a position corresponding to the through hole on the first cylindrical body (3-2) on the closed end surface of the first cylindrical body (3-2), and a through hole of the same caliber is arranged on the other closed end surface of the second cylindrical body (3-3), the side of the through hole facing outwards is connected to the other side interface (3-1), and the center line of the connected side interface (3-1) passes through the center of the through hole, and the center line of the two through holes on the two closed end surfaces of the second cylindrical body (3-3) is perpendicular to the end surfaces, and based on the relative rotation between the first cylindrical body (3-2) and the second cylindrical body (3-3), the switching between the connection or disconnection of the two side interfaces (3-1) is realized.

3. An invasive arterial puncture needle according to claim 2, characterized in that: The height of the first cylindrical body (3-2) is not greater than the height of the second cylindrical body (3-3).

4. An invasive arterial puncture needle according to any one of claims 1 to 3, characterized in that: The front hose (1), the rear hose (2), the middle adapter (3), and the terminal rear connection device (4) are all made of transparent materials.

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