Electrocardiograph chest lead ball device

Abstract

The utility model relates to the field of medical instruments, in particular to a chest lead ball device of an electrocardiograph. Comprising an elastic suction ball, a connecting shaft, an electrode catheter and a suction cup, the elastic suction ball is fixedly connected with the suction cup through the connecting shaft, and the electrode catheter is arranged on the connecting shaft; the electrode catheter is cylindrical, and a first internal thread is arranged in the electrode catheter; the lead wire plug is used for being connected to the electrode catheter, and a first external thread matched with the first internal thread is arranged on the outer surface of the lead wire plug; a locking cap is detachably installed at the first end of the lead wire plug, the diameter of the locking cap is larger than the inner diameter of the electrode catheter, and the locking cap is used for installing and locking the first end of the lead wire plug after the lead wire plug is inserted into the electrode catheter. By installing the locking cap, the lead wire plug and the electrode catheter are tightly connected and are not easy to loosen or fall off.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a chest lead ball device for an electrocardiograph. Background Art

[0002] Traditional electrocardiograph chest lead ball devices usually include elastic suction balls, connecting shafts, electrode catheters, and suction cups. However, these devices have some problems during use. For example, in Chinese patent CN203898300U, the connection between the lead wire plug and the electrode catheter is not tight enough, and it is easy to loosen or fall off, resulting in unstable signal transmission. Especially for psychiatric patients, there is a problem that the lead wire plug falls off due to the patient pulling it. Utility Model Content

[0003] The utility model aims to provide a chest lead ball device for an electrocardiograph to solve the problem that the connection between the existing lead wire plug and the electrode catheter is not tight enough and is easy to loosen or fall off.

[0004] To achieve the above purpose, the following technical solution is adopted.

[0005] A chest lead ball device for an electrocardiograph comprises an elastic suction ball, a connecting shaft, an electrode catheter and a suction cup, wherein the elastic suction ball is fixedly connected to the suction cup via the connecting shaft, and the electrode catheter is arranged on the connecting shaft; the electrode catheter is cylindrical and has a first internal thread arranged therein; further comprising a lead wire plug, the lead wire plug is used to be connected to the electrode catheter, and the outer surface of the lead wire plug is provided with a first external thread matched with the first internal thread; a locking cap is detachably mounted on the first end of the lead wire plug, the diameter of the locking cap is larger than the inner diameter of the electrode catheter, and the locking cap is used to mount and lock the first end of the lead wire plug after the lead wire plug is inserted into the electrode catheter.

[0006] Optionally, a mounting hole is provided at the first end of the lead wire plug, a second internal thread is provided in the mounting hole, a connecting rod matching the mounting hole is provided at the end surface of the locking cap, a second external thread matching the second internal thread is provided on the connecting rod, and the locking cap is threadedly connected to the mounting hole through the connecting rod.

[0007] Optionally, a spring is provided in the mounting hole, a first end of the spring is connected to the bottom of the mounting hole, and a second end of the spring is used to support the connecting rod.

[0008] Optionally, the locking cap is further provided with a connecting tube, the connecting tube is sleeved on the outside of the connecting rod, the connecting tube is provided with a third internal thread, and the third internal thread is threadably connected to the first external thread.

[0009] Optionally, the outer surface of the locking cap is a smooth surface.

[0010] Optionally, a tool groove is provided on an end surface of the locking cap away from the first end of the lead wire plug for disassembling and assembling the locking cap using a tool.

[0011] Optionally, the locking cap is further provided with a second connecting tube, the second connecting tube is provided with a fourth internal thread, the end of the electrode catheter close to the locking cap is provided with a third external thread, and the fourth internal thread is connected to the third external thread.

[0012] Optionally, a gasket is provided in the mounting hole to support the connecting rod.

[0013] Optionally, the locking cap is snap-connected to the first end of the lead wire plug.

[0014] Optionally, the end surface of the locking cap is provided with a sub-buckle, and the first end of the lead wire plug is provided with a female buckle, and the sub-buckle and the female buckle are cooperatively arranged to be buckled with each other.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The present application uses a locking cap to ensure that the lead wire plug is tightly connected to the electrode catheter and is not easy to loosen or fall off.

[0017] 2. The present application provides a spring and a connecting rod to make the connection between the locking cap and the lead wire plug tighter, so that the lead wire plug is not easy to loosen or fall off.

[0018] 3. The present application provides a connecting rod and a connecting tube to fasten the locking cap and the lead wire plug in multiple directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The utility model is a structural schematic diagram of an embodiment of a chest lead ball device of an electrocardiograph.

[0020] Figure 2 The utility model is a schematic structural diagram of an electrocardiograph chest lead ball device in an unmounted state from a first viewing angle.

[0021] Figure 3 This is a structural schematic diagram of a chest lead ball device of an electrocardiograph in a second viewing angle in an uninstalled state according to an embodiment of the utility model.

[0022] Figure 4 The utility model is a schematic diagram of the internal structure of the connection part of an electrocardiograph chest lead ball device embodiment.

[0023] Wherein: 1-elastic suction ball, 2-connecting shaft, 3-electrode catheter, 4-suction cup, 5-lead wire plug, 6-locking cap, 7-mounting hole, 8-connecting rod, 9-spring, 10-connecting tube. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0025] The following detailed descriptions are all exemplary descriptions, and are intended to provide further detailed descriptions of the present invention. Unless otherwise specified, all technical terms used in the present invention have the same meanings as those generally understood by those skilled in the art to which the present application belongs. The terms used in the present invention are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present invention.

[0026] like Figure 1-Figure 4 As shown, a chest lead ball device for an electrocardiograph comprises an elastic suction ball 1, a connecting shaft 2, an electrode catheter 3 and a suction cup 4, wherein the elastic suction ball 1 is fixedly connected to the suction cup 4 via the connecting shaft 2, and the electrode catheter 3 is arranged on the connecting shaft 2; the electrode catheter 3 is cylindrical, and a first internal thread is arranged inside; a lead wire plug 5 is also included, and the lead wire plug 5 is used to be connected to the electrode catheter 3, and a first external thread matching the first internal thread is arranged on the outer surface of the lead wire plug 5; a locking cap 6 is detachably installed at the first end of the lead wire plug 5, and the diameter of the locking cap 6 is larger than the inner diameter of the electrode catheter 3, and the locking cap 6 is used to install and lock the first end of the lead wire plug 5 after the lead wire plug 5 is inserted into the electrode catheter 3.

[0027] Specifically, the direction of the electrode catheter 3 can be perpendicular to the connecting axis 2. The electrode catheter 3 is a cylindrical structure with both ends connected. The lead wire connector is a cylindrical structure. An arc is set on the top of the first end to facilitate the insertion of the electrode catheter 3. The locking cap 6 can be round or spherical.

[0028] As a preferred example, a mounting hole 7 is provided at the first end of the lead wire plug 5, a second internal thread is provided in the mounting hole 7, a connecting rod 8 matching with the mounting hole 7 is provided on the end face of the locking cap 6, a second external thread matching with the second internal thread is provided on the connecting rod 8, and the locking cap 6 is threadedly connected in the mounting hole 7 through the connecting rod 8.

[0029] The mounting hole 7 is arranged at the center of the top of the lead wire plug 5, and the axis of the mounting hole 7 coincides with the axis of the lead wire plug 5. A connecting rod 8 is arranged on the first end surface of the locking cap 6, and the diameter of the connecting rod 8 matches the diameter of the mounting hole 7. The length of the connecting rod 8 is less than or equal to the depth of the mounting hole 7. The locking cap 6 is threadedly connected to the first end of the lead wire plug 5 through the connecting rod 8.

[0030] As a preferred example, a spring 9 is provided in the mounting hole 7 , a first end of the spring 9 is connected to the bottom of the mounting hole 7 , and a second end of the spring 9 is used to support the connecting rod 8 .

[0031] Specifically, the spring 9 is subjected to pressure from the connecting rod 8, and at the same time, the connecting rod 8 is subjected to thrust from the spring 9. Under the action of the thrust, the threaded connection between the locking cap 6 and the lead wire plug 5 is more secure and not easy to fall off. The elastic force of the spring 9 can be selected as needed, and the diameter of the spring 9 is smaller than the diameter of the mounting hole 7.

[0032] As a preferred example, the locking cap 6 is further provided with a connecting tube 10, which is sleeved on the outside of the connecting rod 8, and the connecting tube 10 is provided with a third internal thread, which is threadably connected to the first external thread.

[0033] Specifically, the diameter of the connecting tube 10 is larger than the diameter of the connecting rod 8, and the connecting tube 10 and the connecting rod 8 are coaxially arranged. The connecting tube 10 is used to be threadedly connected to the outside of the first end of the lead wire plug 5, and the locking cap 6 is threadedly connected to the lead wire plug 5 at the same time through the second external thread and the third internal thread, so that the connection is tighter and not easy to fall off.

[0034] As a preferred example, the outer surface of the locking cap 6 is a smooth surface.

[0035] Specifically, the smooth outer surface makes it difficult to twist the locking cap 6 with bare hands, so as to prevent the patient from removing the locking cap 6 by himself. The locking cap 6 may be round or spherical.

[0036] As a preferred example, a tool groove is provided on the end surface of the locking cap 6 away from the first end of the lead wire plug 5 for disassembling and assembling the locking cap 6 using a tool.

[0037] Specifically, the tool can be a special key, which is inserted into the tool slot to unlock. The tool slot can be a cross slot, a slotted slot, or a hexagonal slot. The cross slot uses a cross screwdriver for disassembly and assembly, the slotted slot uses a slotted screwdriver for disassembly and assembly, and the hexagonal slot uses a hexagonal disassembly and assembly tool.

[0038] As a preferred example, the locking cap 6 is further provided with a second connecting tube, the second connecting tube is provided with a fourth internal thread, and the end of the electrode catheter 3 close to the locking cap 6 is provided with a third external thread, and the fourth internal thread is connected to the third external thread.

[0039] Specifically, the inner diameter of the second connecting tube is larger than the inner diameter of the connecting tube 10 , and the inner diameter of the second connecting tube matches the outer diameter of the electrode catheter 3 . The second connecting tube can be provided together with the connecting tube 10 .

[0040] As a preferred example, a gasket is provided in the mounting hole 7 for supporting the connecting rod 8 .

[0041] The specific gasket and the spring 9 have the same function, both of which provide a certain thrust to the connecting rod 8, so that the threaded connection between the connecting rod 8 and the mounting hole 7 is tighter.

[0042] As a preferred example, the locking cap 6 is snap-connected to the first end of the lead wire plug 5. The snap-connection is convenient for assembly and disassembly.

[0043] As a preferred example, the end face of the locking cap 6 is provided with a sub-buckle, and the first end of the lead wire plug 5 is provided with a female buckle, and the sub-buckle and the female buckle are matched and configured to buckle with each other.

[0044] Specifically, the sub-buckle is provided with a plurality of protrusions with chamfers, and the female buckle is an annular groove arranged on the inner wall of the mounting hole 7. The protrusions with chamfers are convenient for inserting into the mounting hole 7. The chamfer is squeezed by the inside of the mounting hole 7. When the chamfer meets the annular groove, the chamfer holds the annular groove to realize a snap-on connection. A slide-out groove may also be provided on the annular groove. The slide-out groove is an inclined groove connecting the bottom of the annular groove and the inner wall of the mounting hole 7. The locking cap 6 is rotated using a tool, and the chamfer rotates in the annular groove. When it rotates to the slide-out groove, the mounting hole 7 can be withdrawn along the slide-out groove to realize dismantling.

[0045] When the utility model is used, the lead wire plug 5 is screwed into the electrode catheter 3, so that the first external thread of the lead wire plug 5 is threadedly connected with the first internal thread of the electrode catheter 3, and the locking cap 6 is installed on the lead wire plug 5 using a special key, so that the third internal thread of the locking cap 6 is threadedly connected with the first external thread of the lead wire plug 5, and the second external thread of the connecting rod 8 is threadedly connected with the second internal thread of the lead wire plug 5. When the lead ball needs to be replaced, the locking cap 6 is screwed out using a special key, and the lead wire plug 5 is manually screwed out.

[0046] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the embodiments disclosed above are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. An electrocardiograph chest lead ball device, characterized in that: It comprises an elastic suction ball (1), a connecting shaft (2), an electrode catheter (3) and a suction cup (4), wherein the elastic suction ball (1) is fixedly connected to the suction cup (4) via the connecting shaft (2), and the electrode catheter (3) is arranged on the connecting shaft (2); The electrode catheter (3) is cylindrical and has a first internal thread arranged inside; It also comprises a lead wire plug (5), the lead wire plug (5) being used to be connected to the electrode catheter (3), the outer surface of the lead wire plug (5) being provided with a first outer thread matching the first inner thread; A locking cap (6) is detachably mounted on the first end of the lead wire plug (5); the locking cap (6) has a diameter greater than the inner diameter of the electrode catheter (3); and the locking cap (6) is used to mount and lock the first end of the lead wire plug (5) after the lead wire plug (5) is inserted into the electrode catheter (3).

2. The electrocardiograph chest lead ball device according to claim 1, characterized in that: The first end of the lead wire plug (5) is provided with a mounting hole (7), a second internal thread is provided in the mounting hole (7), an end surface of the locking cap (6) is provided with a connecting rod (8) matching with the mounting hole (7), the connecting rod (8) is provided with a second external thread matching with the second internal thread, and the locking cap (6) is threadably connected to the mounting hole (7) via the connecting rod (8).

3. The electrocardiograph chest lead ball device according to claim 2, characterized in that: A spring (9) is arranged in the mounting hole (7), a first end of the spring (9) is connected to the bottom of the mounting hole (7), and a second end of the spring (9) is used to support the connecting rod (8).

4. The electrocardiograph chest lead ball device according to claim 2, characterized in that: The locking cap (6) is further provided with a connecting tube (10), the connecting tube (10) being sleeved on the outside of the connecting rod (8), the connecting tube (10) being provided with a third internal thread, the third internal thread being threadably connected to the first external thread.

5. The electrocardiograph chest lead ball device according to claim 1, characterized in that: The outer surface of the locking cap (6) is a smooth surface.

6. The electrocardiograph chest lead ball device according to claim 1, characterized in that: A tool groove is provided on the end surface of the locking cap (6) away from the first end of the lead wire plug (5) for disassembling and assembling the locking cap (6) using a tool.

7. The electrocardiograph chest lead ball device according to claim 1, characterized in that: The locking cap (6) is further provided with a second connecting tube, the second connecting tube is provided with a fourth internal thread, and an end of the electrode catheter (3) close to the locking cap (6) is provided with a third external thread, the fourth internal thread being connected to the third external thread.

8. The electrocardiograph chest lead ball device according to claim 2, characterized in that: A gasket is provided in the mounting hole (7) and is used to support the connecting rod (8).

9. The electrocardiograph chest lead ball device according to claim 1, characterized in that: The locking cap (6) is snap-connected to the first end of the lead wire plug (5).

10. The electrocardiograph chest lead ball device according to claim 9, characterized in that: The end surface of the locking cap (6) is provided with a sub-buckle, and the first end of the lead wire plug (5) is provided with a female buckle, and the sub-buckle and the female buckle are arranged in cooperation with each other for buckling.

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