Injector pressure connector and injector

Abstract

The utility model discloses an injector pressure connector and an injector. The injector pressure connector comprises a connector body provided with an inlet, an outlet and a channel, and the side face of the channel is provided with a first opening; the axial direction of the pressure indicating cylinder intersects with the axial direction of the channel, the first end of the pressure indicating cylinder is open, the second end of the pressure indicating cylinder is closed, the pressure indicating cylinder comprises a cylinder end opening and a cylinder cavity, the first end of the cylinder cavity abuts against the cylinder end opening, and the second end of the cylinder cavity abuts against the first opening; the indication piston is arranged in the cylinder cavity and can move in the axial direction of the cylinder cavity, the indication piston comprises an indication piston head and an indication piston tail column, the indication piston head is opposite to the first opening in position, and the indication piston tail column can stretch out of the pressure indication cylinder from the cylinder end opening; the first spring is used for providing resistance for movement of the indicating piston. The device has the advantages of simple structure, convenience in use, easiness in replacement, wide application range and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to an injector pressure connector and an injector. BACKGROUND

[0002] In the medical field, it is often necessary to measure and indicate injection pressure. For example, when performing spinal anesthesia on a patient, too high injection pressure can damage the spinal cord nerves. Therefore, in order to prevent the injection pressure from being too large, it is necessary to display and limit the injection pressure. SUMMARY

[0003] Therefore, the present application provides an injector pressure connector and an injector, which can solve the above-mentioned technical problems. The present application specifically provides the following technical solutions.

[0004] An injector pressure connector comprises a connector main body, the connector main body has an inlet and an outlet, a channel is provided between the inlet and the outlet, and a first opening is provided on the side of the channel; a pressure indicating cylinder, the axial direction of the pressure indicating cylinder intersects the axial direction of the channel, the first end of the pressure indicating cylinder is open, the second end of the pressure indicating cylinder is closed, the pressure indicating cylinder comprises a cylinder end opening and a cylinder cavity, the first end of the cylinder cavity abuts the cylinder end opening, and the second end of the cylinder cavity abuts the first opening; an indicating piston, the indicating piston is arranged inside the cylinder cavity and can move along the axial direction of the cylinder cavity, the indicating piston comprises an indicating piston head and an indicating piston tail column, the indicating piston head is opposite the position of the first opening, and the indicating piston tail column can extend out of the pressure indicating cylinder from the cylinder end opening; and a first spring, the first spring is arranged inside the cylinder cavity, is used for providing resistance to the movement of the indicating piston, the first end of the first spring abuts the inner surface of the first end of the pressure indicating cylinder, and the second end of the first spring abuts the indicating piston head.

[0005] Optionally, the feedback adjusting module is further configured to adjust the flow cross-sectional area of the channel according to the pressure of the channel.

[0006] Optionally, the channel side has a second opening and a valve plate socket; and the feedback adjustment module comprises: a pressure conducting pipe between the second opening and the valve plate socket; a pressure regulating piston inside the pressure conducting pipe and movable along the axial direction of the pressure conducting pipe, the pressure regulating piston comprising a pressure regulating piston head opposite to the position of the second opening and a pressure regulating piston tail valve plate capable of extending into the channel from the valve plate socket; and a second spring inside the pressure conducting pipe for providing resistance to the movement of the pressure regulating piston, the first end of the second spring abutting against the pressure regulating piston head and the second end of the second spring abutting against the side wall of the channel near the valve plate socket.

[0007] Optionally, the pressure conducting pipe is arranged in the pressure indicating cylinder.

[0008] Optionally, further comprising: an exhaust hole arranged on the side wall of the pressure regulating channel and near the second end of the second spring.

[0009] Optionally, the pressure indicating cylinder comprises: a cover, a shell, and a sealing ring arranged between the cover and the shell.

[0010] Optionally, the indicating piston further comprises an indicating mark arranged on the piston tail column, the indicating mark being used for indicating the injection pressure.

[0011] Optionally, further comprising: a gap arranged between the cylinder end opening and the piston tail column.

[0012] Optionally, the axial direction of the pressure indicating cylinder is perpendicular to the axial direction of the channel.

[0013] An injection syringe comprising the injection syringe pressure connector of the present application.

[0014] According to the technical solution of the present application, by designing the pressure indicating cylinder, the indicating piston and the spring in cooperation, when the injection pressure increases, the indicating piston extends from the first end of the pressure indicating cylinder, which allows the user to read the injection pressure, and has the advantages of simple structure, convenient use, easy replacement, wide application range, etc. BRIEF DESCRIPTION OF DRAWINGS

[0015] For the purpose of illustration and not limitation, the present application will now be described according to the preferred embodiments of the present application, in particular with reference to the accompanying drawings, in which:

[0016] Figure 1 is a perspective view of an injection syringe pressure connector according to an example embodiment of the present application;

[0017] Figure 2is a front view of a syringe pressure connector according to an example embodiment of the present application;

[0018] Figure 3 is a top view of a syringe pressure connector according to an example embodiment of the present application;

[0019] Figure 4 is a cross-sectional view of a syringe pressure connector according to an example embodiment of the present application;

[0020] Figure 5 is a working schematic of a syringe pressure connector according to an example embodiment of the present application;

[0021] Figure 6 is a perspective view of a syringe pressure connector according to another example embodiment of the present application;

[0022] Figure 7 is a cross-sectional view of a syringe pressure connector according to another example embodiment of the present application;

[0023] Figure 8 is a working schematic of a syringe pressure connector according to another example embodiment of the present application.

[0024] In the figure: connector body 10, inlet 101, outlet 102, channel 103, first opening 104, second opening 105, valve plate socket 106, pressure indicator cylinder 20, cover 201, cylinder end opening 2011, housing 202, cylinder cavity 203, sealing ring 204, indicator piston 30, indicator piston head 301, indicator piston tail column 302, indicator markings 303, first spring 40, pressure transmission tube 50, pressure regulating piston 60, pressure regulating piston head 601, pressure regulating piston tail valve plate 602, second spring 70, exhaust hole 80, gap 90. DETAILED DESCRIPTION

[0025] The technical solutions of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0026] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms such as "mounting", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In the description of the present application, the first end can be defined as the upper end, the top end shown in the picture, and the second end can be defined as the lower end, the bottom end shown in the picture, but this is only for example and not limited.

[0027] As shown in Figures 1 to 4 , the syringe pressure connector of the example embodiment of the present application mainly comprises a connector main body 10, a pressure indicating cylinder 20, an indicating piston 30, and a first spring 40.

[0028] The connector main body 10 has an inlet 101 and an outlet 102, and a channel 103 between the inlet 101 and the outlet 102, and a first opening 104 on the side of the channel 103.

[0029] The axial direction of the pressure indicating cylinder 20 intersects with the axial direction of the channel 103. The first end of the pressure indicating cylinder 20 is open, and the second end of the pressure indicating cylinder 20 is closed. The pressure indicating cylinder 20 comprises a cylinder end opening 2011 and a cylinder cavity 203. The first end of the cylinder cavity 203 abuts the cylinder end opening 2011, and the second end of the cylinder cavity 203 abuts the first opening 104. Preferably but not necessarily, the pressure indicating cylinder 20 adopts a split design, comprising a cover body 201, a shell 202, and a sealing ring 204 arranged between the cover body 201 and the shell 202. The split design is beneficial to reduce the assembly difficulty of the product, and the design of the sealing ring can enhance the air tightness of the product.

[0030] The indicating piston 30 is arranged inside the cylinder cavity 203 and can move along the axial direction of the cylinder cavity 203. The indicating piston 30 comprises an indicating piston head 301 and an indicating piston tail column 302. The indicating piston head 301 is opposite to the position of the first opening 104. The indicating piston tail column 302 can protrude out of the pressure indicating cylinder 20 from the cylinder end opening 2011. Preferably but not necessarily, the indicating piston 30 further comprises an indicating mark 303 arranged on the piston tail column 302 (refer to Figure 7 It is understood that the indicating mark 303 is used to indicate the injection pressure.

[0031] The first spring 40 is arranged inside the cylinder cavity 203, and is used to provide resistance to the movement of the indicating piston 30. The first end of the first spring 40 abuts the inner surface of the first end of the pressure indicating cylinder 20 (as Figure 4 shown, i.e. the lower surface of the cover body 201), and the second end of the first spring 40 abuts the indicating piston head 301.

[0032] The syringe pressure connector of the present application can further comprise a gap 90, which is arranged between the barrel end opening 2011 and the piston tail column 302. The gap 90 is used to discharge air while providing a certain damping force.

[0033] In the syringe pressure connector of the present application, the axial direction of the pressure indicating barrel 20 is preferably perpendicular to the axial direction of the channel 103. The perpendicularity is more in line with the design habit and easy to manufacture by mold opening.

[0034] In the syringe pressure connector of the present application, the diameter of the inlet 101 is preferably but not necessarily larger than the diameter of the outlet 102.

[0035] Figure 5 is a working schematic diagram of the syringe pressure connector according to an example embodiment of the present application, in which the arrowed lines represent the flow direction of the injection gas (e.g. anesthetic gas). As can be seen from the diagram, the injection gas flows from the inlet 101 into the channel 103 and then out of the outlet 102. When the injection pressure increases, the injection gas enters the barrel cavity 203 from the first opening 104, which pushes the indicating piston head 301 of the indicating piston 30 upwards, so that the piston tail column 302 of the indicating piston 30 extends upwards from the barrel end opening 2011. During the upward movement of the indicating piston 30, the first spring 40 provides resistance to the movement of the indicating piston 30 and stores energy for later use to push the indicating piston 30 back down. According to the working schematic diagram, the user can preliminarily judge the injection pressure according to the length of the part of the piston tail column 302 exposed outside the pressure indicating barrel 20; in the embodiment provided with the indicating mark 303, the user can more intuitively and accurately know the injection pressure.

[0036] As shown in Figure 6 and Figure 7 , another example embodiment of the syringe pressure connector of the present application mainly comprises a connector main body 10, a pressure indicating barrel 20, an indicating piston 30, a first spring 40, and a feedback adjustment module for feedback adjusting the flow cross-sectional area of the channel 103 according to the pressure of the channel 103.

[0037] As shown in Figure 7 , in another example embodiment of the syringe pressure connector of the present application, the channel 103 has a second opening 105 and a valve plate insertion opening 106 on the side, and the feedback adjustment module can specifically comprise a pressure conducting pipe 50, a pressure regulating piston 60, and a second spring 70.

[0038] A pressure conducting tube 50 is positioned between the second opening 105 and the valve plate socket 106 to communicate the second opening 105 and the valve plate socket 106. A pressure regulating piston 60 is positioned inside the pressure conducting tube 50 and is movable along the axial direction of the pressure conducting tube 50. The pressure regulating piston 60 includes a pressure regulating piston head 601 and a pressure regulating piston tail valve plate 602. The pressure regulating piston head 601 is positioned opposite to the second opening 105. The position opposite is not limited to be directly opposite as the piston head 301 to the first opening 104, but means that there is no barrier between the pressure regulating piston head 601 and the second opening 105, so that the gas flow from the second opening 105 into the pressure conducting tube 50 can push the pressure regulating piston head 601. The pressure regulating piston tail valve plate 602 can extend into the channel 103 from the valve plate socket 106, so as to adjust the opening degree of the channel 103. A second spring 70 is arranged inside the pressure conducting tube 50 to provide resistance to the movement of the pressure regulating piston 60. The first end of the second spring 70 abuts against the pressure regulating piston head 601, and the second end of the second spring 70 abuts against the side wall of the channel 103 near the valve plate socket 106. The injector pressure connector can further include an exhaust hole 80 arranged on the side wall of the pressure conducting tube 50 and near the second end of the second spring 70.

[0039] It should be noted that, preferably but not necessarily, as shown in Figure 7 The pressure conducting tube 50 is arranged in the pressure indicating cylinder 20, which can save volume and simplify the structure. In other embodiments, the pressure conducting tube 50 can also be a separate pipe.

[0040] Figure 8is a working schematic diagram of the injector pressure connector according to another example embodiment of the present application, in which the arrowed lines represent the flow direction of the injection gas (e.g. anesthetic gas). As can be seen from the diagram, the injection gas flows from the inlet 101 into the channel 103 and then out of the outlet 102. When the injection pressure increases, part of the injection gas enters the barrel cavity 203 from the first opening 104, pushing the indicator piston head 301 of the indicator piston 30 upwards, so that the piston tail 302 of the indicator piston 30 extends upwards from the barrel end opening 2011, allowing the user to read the injection pressure and achieve the reminder function. During the upward movement of the indicator piston 30, the first spring 40 provides resistance to the movement of the indicator piston 30 and stores energy for subsequent return of the indicator piston 30. At the same time, another part of the injection gas enters the pressure transmission tube 50 from the second opening 105, pushing the pressure regulating piston head 601 of the pressure regulating piston 60 downwards, thereby moving the pressure regulating piston tail valve plate 602 downwards and extending into the channel 103 from the valve plate socket 106, thereby reducing the flow area of the channel 103, i.e. reducing the opening of the channel 103. During the downward movement of the pressure regulating piston 60, the second spring 70 provides resistance to the movement of the pressure regulating piston 60 and stores energy for subsequent return of the pressure regulating piston 60. When the injection pressure increases to a preset threshold, the pressure regulating piston 60 moves significantly downwards, and the pressure regulating piston tail valve plate 602 completely closes the channel 103, thereby stopping the injection process and achieving the control function.

[0041] The injector pressure connector according to the embodiments of the present application, by designing the pressure indicating barrel, the indicator piston and the spring to cooperate with each other, when the injection pressure increases, the indicator piston extends from the first end of the pressure indicating barrel, allowing the user to read the injection pressure; by designing the feedback control module, the injection process can be automatically stopped when the injection pressure exceeds the limit, which can effectively avoid the adverse consequences of overpressure injection. The injector pressure connector has the advantages of simple structure, convenient use, easy replacement, wide application range, etc.

[0042] The injector according to the embodiments of the present application includes the injector pressure connector of the present application. The injector also has the advantages of simple structure, convenient use, easy replacement, wide application range, etc.

[0043] The above specific embodiments do not constitute a limitation on the scope of protection of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made depending on design requirements and other factors. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A syringe pressure fitting, characterized by, Comprise: A joint body (10) having an inlet (101) and an outlet (102) with a channel (103) therebetween, the channel (103) having a first opening (104) on the side thereof; A pressure indicating cylinder (20) having an axial direction intersecting with the axial direction of the channel (103), the first end of the pressure indicating cylinder (20) being open, the second end of the pressure indicating cylinder (20) being closed, the pressure indicating cylinder (20) comprising a cylinder end opening (2011) and a cylinder cavity (203), the first end of the cylinder cavity (203) abutting the cylinder end opening (2011), and the second end of the cylinder cavity (203) abutting the first opening (104); An indicating piston (30) disposed inside the cylinder cavity (203) and capable of moving along the axial direction of the cylinder cavity (203), the indicating piston (30) comprising an indicating piston head (301) and an indicating piston tail column (302), the indicating piston head (301) being opposite to the first opening (104), the indicating piston tail column (302) being capable of extending out of the pressure indicating cylinder (20) from the cylinder end opening (2011); A first spring (40) disposed inside the cylinder cavity (203) for providing resistance to the movement of the indicating piston (30), the first end of the first spring (40) abutting the inner surface of the first end of the pressure indicating cylinder (20), the second end of the first spring (40) abutting the indicating piston head (301).

2. The syringe pressure fitting of claim 1, wherein, Further comprise: A feedback adjustment module for feedback adjusting the flow cross-sectional area of the channel (103) according to the pressure of the channel (103).

3. The injector pressure joint according to claim 2, characterized in that, the channel (103) has a second opening (105) and a valve plate socket (106) on the side thereof; and the feedback adjustment module comprises: A pressure conducting pipe (50) between the second opening (105) and the valve plate socket (106); A pressure regulating piston (60) inside the pressure conducting pipe (50) and capable of moving along the axial direction of the pressure conducting pipe (50), the pressure regulating piston (60) comprising a pressure regulating piston head (601) and a pressure regulating piston tail valve plate (602), the pressure regulating piston head (601) being opposite to the second opening (105), the pressure regulating piston tail valve plate (602) being capable of extending into the channel (103) from the valve plate socket (106); A second spring (70) is arranged inside the pressure conducting pipe (50) for providing resistance to the movement of the pressure regulating piston (60), a first end of the second spring (70) abuts against the pressure regulating piston head (601), a second end of the second spring (70) abuts against a side wall of the passage (103) near the valve plate socket (106).

4. The syringe pressure fitting of claim 3, wherein, The pressure conducting pipe (50) is arranged inside the pressure indicating cylinder (20).

5. The syringe pressure fitting of claim 4, wherein, Further comprising: An exhaust hole (80) is arranged on the side wall of the pressure regulating passage and near the second end of the second spring (70).

6. The syringe pressure fitting of any one of claims 1 to 5, wherein, The pressure indicating cylinder (20) comprises a cover (201), a shell (202), and a sealing ring (204) arranged between the cover (201) and the shell (202).

7. The syringe pressure fitting of any one of claims 1 to 5, wherein, The indicating piston (30) further comprises an indicating mark (303) arranged on the piston tail column (302), the indicating mark (303) is used for indicating the size of the injection pressure.

8. The syringe pressure fitting of any one of claims 1 to 5, wherein, Further comprising: A gap (90) is arranged between the cylinder end opening (2011) and the piston tail column (302).

9. The syringe pressure fitting of any one of claims 1 to 5, wherein, The axial direction of the pressure indicating cylinder (20) is perpendicular to the axial direction of the passage (103).

10. A syringe characterized by, The injection pressure connector comprises the injection pressure connector according to any one of claims 1 to 9.

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