CN217724256U

CN217724256U - Angiography system

Info

Publication number: CN217724256U
Application number: CN202221110975.6U
Authority: CN
Inventors: 朱栋梁; 卢建华
Original assignee: Guangzhou First Peoples Hospital
Current assignee: Guangzhou First Peoples Hospital
Priority date: 2022-05-09
Filing date: 2022-05-09
Publication date: 2022-11-04
Anticipated expiration: 2032-05-09

Abstract

The utility model relates to the technical field of angiography, in particular to an angiography system, which comprises an injector, a three-way valve, an angiography catheter and a gas storage bottle for storing liquid carbon dioxide; the three-way valve is equipped with the first port of changeable connected state, second port and third port, the gas outlet intercommunication of first port and gas bomb, the injection port intercommunication of second port and syringe, the third port and radiography pipe intercommunication, the connected state of switching three-way valve, make first port and second port intercommunication, fill in the syringe after the gasification of liquid carbon dioxide in the gas bomb, the cover is established and is heated the carbon dioxide gas that gets into in the syringe at the heating device in the barrel outside of syringe, then with second port and third port intercommunication, carbon dioxide gas after will heating pours into the target blood vessel into, consequently, the utility model discloses an angiographic system, it is suitable to inject the carbon dioxide gas temperature to the patient internal, has avoided the patient to appear uncomfortably.

Description

Angiography system

Technical Field

The utility model relates to an angiogram technical field especially relates to an angiogram system.

Background

In the interventional operation process, iodine-containing contrast agents are needed to be used for digital subtraction angiography, however, a small number of people are allergic to the iodine-containing contrast agents, and mild symptoms are skin itch and skin rash, severe symptoms can be nausea, vomiting, abdominal pain and diarrhea, and even allergic shock manifestations such as larynx edema, dyspnea, blood pressure reduction and the like are caused; in addition, iodine-containing contrast agents are also not suitable for patients with hyperthyroidism, renal insufficiency, multiple myeloma, heart failure, and severe hypertension; for patients who are not suitable for iodine-containing contrast agents, carbon dioxide gas is needed to be used as the contrast agent for angiography, the carbon dioxide gas has the advantages of no anaphylactic reaction and nephrotoxic effect and no influence on blood osmotic pressure, and is suitable for angiography of arteries below diaphragm, particularly arteries except cerebral blood vessels, and arteriovenous, vena cava and portal vein angiography of four limbs, and the angiographic carbon dioxide gas angiography is also suitable for observing arteriovenous short circuit, tumor blood sinuses, small amount of bleeding, stenoses, collateral branches and the like which cannot be displayed by conventional contrast agents.

In the existing angiography system, when carbon dioxide gas is injected into a patient, liquid carbon dioxide stored in a gas storage bottle needs to be gasified into carbon dioxide gas and then introduced into an injector, then the injector is connected to an angiography catheter, the other end of the angiography catheter is placed into a target blood vessel, and the carbon dioxide gas is injected into the target blood vessel by pushing a push rod of the injector. However, the liquid carbon dioxide may emit heat during the gasification process, resulting in a lower temperature of the carbon dioxide gas, and the injection of the lower temperature carbon dioxide gas into the target blood vessel may cause discomfort to the patient.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: in the existing blood contrast system, the temperature of carbon dioxide gas injected into a patient is low, so that the patient feels uncomfortable.

In order to solve the technical problem, the utility model aims to provide an angiography system, which comprises an injector, a three-way valve, an angiography catheter and a gas storage bottle for storing liquid carbon dioxide, wherein a heating device is sleeved outside a cylinder body of the injector; the gas storage bottle is characterized in that a heat insulation sleeve is covered on the outer side of the gas storage bottle, the three-way valve is provided with a first port, a second port and a third port, the first port is communicated with a gas outlet of the gas storage bottle, the second port is communicated with an injection port of the injector, the third port is communicated with an inner cavity of the radiography conduit, the communication state of the three-way valve is switched, and the first port can be communicated with the second port or the second port can be communicated with the third port.

Preferably, the three-way valve is an L-shaped three-way valve.

Preferably, the angiography system comprises a pressure reducing valve, the pressure reducing valve is provided with an air inlet end and an air outlet end, the air inlet end is in sealing connection with a bottle mouth of the gas storage bottle, and the air outlet end is in sealing connection with the first port.

Preferably, a first external thread is arranged on the periphery of the mouth of the gas storage bottle, and a first internal thread matched with the first external thread is arranged at the gas inlet end.

Preferably, the angiography system comprises a first connecting cylinder, a second external thread is arranged on the outer peripheral side of the first port, an annular groove is arranged on the outer side of the air outlet end, an annular flange extending inwards in the radial direction of the first connecting cylinder is arranged at one end of the first connecting cylinder, the annular flange is clamped in the annular groove, and a second internal thread matched with the second external thread is arranged at the other end of the first connecting cylinder.

Preferably, the angiography system comprises a second connecting cylinder, a third external thread is arranged on the outer periphery of the second port, one end of the second connecting cylinder is fixedly connected to the injection end of the syringe, and a third internal thread matched with the third external thread is arranged at the other end of the second connecting cylinder.

Preferably, the angiography system comprises a third connecting cylinder, a connector is arranged at the end of the angiography catheter, a fourth external thread is arranged on the outer peripheral side of the connector, one end of the third connecting cylinder is fixedly connected to the outer side of the third port, and a fourth internal thread matched with the fourth external thread is arranged at the other end of the second connecting cylinder.

Preferably, the syringe is a ring handle syringe.

Preferably, the heating device is a constant temperature heating sleeve.

Preferably, the heating device is detachably connected to the syringe.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model discloses an angiography system, which comprises an injector, a three-way valve, an angiography catheter and a gas bomb storing liquid carbon dioxide; the gas bomb outside cover is equipped with the insulation cover, the three-way valve is equipped with first port, second port and third port, the gas outlet intercommunication of first port and gas bomb, the injection port intercommunication of second port and syringe, the inner chamber intercommunication of third port and radiography pipe, the intercommunication state of switching three-way valve, make first port and second port intercommunication, fill in the syringe after the gasification of liquid carbon dioxide in the gas bomb, the cover is established and is heated the carbon dioxide gas that gets into in the syringe at the heating device in the barrel outside of syringe, then with second port and third port intercommunication, carbon dioxide gas after will heating through the syringe pours into the target blood vessel into, therefore, the utility model discloses an angiographic system, the carbon dioxide gas temperature of injection to patient is suitable, has avoided the patient to appear uncomfortably.

Drawings

Fig. 1 is a schematic structural view of an angiography system according to the present invention;

FIG. 2 is a schematic view of a pressure reducing valve;

in the figure, 1, syringe; 11. a second connecting cylinder; 2. a three-way valve; 21. a first port; 22. a second port; 23. a third port; 24. a third connecting cylinder; 3. a contrast catheter; 4. a gas cylinder; 41. a thermal insulation sleeve; 5. a heating device; 6. a pressure reducing valve; 61. an air inlet end; 611. a first columnar groove; 62. an air outlet end; 621. an annular groove; 63. a first connecting cylinder; 631. an annular flange; 64. an air inlet pipe; 65. a first seal ring; 66. an airflow adjusting bolt; 67. a second seal ring; 68. an air flow regulating passage; .

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, which are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.

As shown in fig. 1 and 2, the preferred embodiment of an angiography system of the present invention comprises an injector 1, a three-way valve 2, an angiography catheter 3 and a gas cylinder 4 storing liquid carbon dioxide, wherein a heating device 5 is sleeved outside a cylinder of the injector 1; the three-way valve 2 is provided with a first port 21, a second port 22 and a third port 23, the first port 21 is communicated with an air outlet of the gas storage bottle 4, the second port 22 is communicated with an injection port of the injector 1, the third port 23 is communicated with an inner cavity of the contrast conduit 3, and the communication state of the three-way valve 2 is switched, so that the first port 21 is communicated with the second port 22, or the second port 22 is communicated with the third port 23.

During the use, switch three-way valve 2's the connected state for first port 21 and second port 22 intercommunication, fill in the syringe 1 after the gasification of the liquid carbon dioxide in the gas bomb 4, the cover is established and is being established the heating device 5 in the barrel outside of syringe 1 and heating the carbon dioxide gas that gets into in the syringe, then with second port 22 and the 23 intercommunication of third port, the carbon dioxide gas after will heating through syringe 1 pours into the target blood vessel into, consequently, the utility model discloses an angiographic system, the carbon dioxide gas temperature of injection to the patient is suitable, has avoided the patient to appear uncomfortably.

Specifically, three-way valve 2 is L type three-way valve, and heating device 5 is the constant temperature heating sleeve, and constant temperature heating sleeve releasable connection can used repeatedly in the barrel outside of syringe 1. The gas bomb 4 is the steel bottle, for avoiding carbon dioxide gasification in-process steel bottle surface cooling and frostbite the operator, is covered at the outside cover of gas bomb 4 and is equipped with insulation cover 41, and insulation cover 41 adopts soft thermal insulation material, the handheld steel bottle of the operating personnel of being convenient for.

In order to adjust the pressure of the carbon dioxide gas entering the injector 1, the angiography system of the present embodiment includes a pressure reducing valve 6, the pressure reducing valve 6 is provided with an air inlet end 61 and an air outlet end 62, the air inlet end 61 is hermetically connected with the mouth of the gas bomb 4, and the air outlet end 62 is hermetically connected with the first port 21. Specifically, the bottle neck periphery of gas bomb 4 is equipped with first external screw thread, and inlet end 61 is equipped with the first internal thread that matches with first external screw thread, and the bottle neck and the inlet end 61 of gas bomb 4 realize removable sealing connection through first external screw thread and first internal thread. Specifically, as shown in fig. 2, a first cylindrical groove 611 is formed at the end of the air inlet end 61, a first internal thread is formed on the side wall of the first cylindrical groove 611, a first sealing ring 65 is arranged inside the first cylindrical groove 611, and when the mouth of the gas bomb 4 is screwed with the air inlet end 61, the first sealing ring 65 can ensure that the mouth of the gas bomb 4 is well sealed with the air inlet end 61, so as to prevent carbon dioxide gas from leaking; in this embodiment, the pressure reducing valve 6 further includes an air inlet pipe 64, the air inlet pipe 64 is coaxially disposed with the first cylindrical groove 611, the lower end of the air inlet pipe 64 protrudes out of the lower end of the first sealing ring 65, a valve which is elastically sealed upwards is disposed in the mouth of the gas storage cylinder 4, and when the mouth of the gas storage cylinder 4 is connected to the air inlet end 61, the lower end of the air inlet pipe 64 presses against the upper end of the valve, so as to open the valve. Further, the pressure reducing valve 6 is provided with an air flow adjusting passage 68 and an air flow adjusting bolt 66, an inner cavity of the air inlet pipe 64 is communicated with the air flow adjusting passage 68, a first section of the air flow adjusting passage 68 is provided with a truncated cone-shaped hole, a small-diameter end of the truncated cone-shaped hole is communicated with an inner cavity of the air outlet end 62, a second end of the air flow adjusting passage 68 is provided with a threaded hole matched with the air flow adjusting bolt 66, the air flow adjusting bolt 66 is in threaded connection with the second end of the air flow adjusting passage 68, a screwing part of the air flow adjusting bolt 66 is located outside the air flow adjusting passage 68, one end of the air flow adjusting bolt 66 far away from the screwing part is provided with a cone-shaped tip structure, the cone-shaped tip structure is matched with the truncated cone-shaped hole, the air flow velocity of the pressure reducing valve is adjusted by adjusting a gap between the cone-shaped tip structure and the cone-shaped hole, and in order to avoid leakage of carbon dioxide air flow entering the air flow adjusting passage 68, a second sealing ring 67 is coaxially and fixedly connected to the middle part of the air flow adjusting bolt 66.

In this embodiment, the angiography system includes a first connecting cylinder 63, a second external thread is disposed on an outer peripheral side of the first port 21, an annular groove 621 is disposed on an outer side of the air outlet end 62, an annular flange 631 extending radially inward along the first connecting cylinder 63 is disposed at one end of the first connecting cylinder 63, the annular flange 631 is clamped in the annular groove 621, and a second internal thread matching with the second external thread is disposed at the other end of the first connecting cylinder 63. The provision of the annular flange 631 and the annular groove 621 enables the first connecting cylinder 63 to rotate about the axis of the first port 21 and restricts axial movement between the first connecting cylinder 63 and the first port 21; the first port 21 is connected to the outlet end 62 by fitting the second internal thread to the second external thread.

In this embodiment, the angiography system includes the second connecting cylinder 11, a third external thread is disposed on an outer peripheral side of the second port 22, one end of the second connecting cylinder 11 is fixedly connected to the injection end of the syringe 1, and a third internal thread matched with the third external thread is disposed on the other end of the second connecting cylinder 11. The angiography system comprises a third connecting cylinder 24, a connecting head 31 is arranged at the end part of the angiography catheter 3, a fourth external thread is arranged on the outer peripheral side of the connecting head 31, one end of the third connecting cylinder 24 is fixedly connected to the outer side of the third port 23, and a fourth internal thread matched with the fourth external thread is arranged at the other end of the second connecting cylinder 24.

In this embodiment, the syringe 1 is a ring handle syringe. The medical staff is convenient to flexibly adjust the placing position of the finger according to the extending length of the piston rod of the injector, and the rapid and balanced injection of the carbon dioxide gas is ensured.

When the angiography system is used, the communication state of the three-way valve 2 is firstly switched to ensure that the first port 21 is communicated with the second port 22, then after the reducing valve 6 is connected with the gas bomb 4, the carbon dioxide liquid in the gas bomb 4 is gasified, the carbon dioxide gas pushes the piston rod of the injector 1 to move outwards under the action of the self pressure, and the air caused by directly absorbing the carbon dioxide by using the injector can be prevented from being mixed; the heating device 5 heats the carbon dioxide gas in the injector 1, and after the carbon dioxide gas in the injector 1 reaches a set volume, the communication state of the three-way valve 2 is switched, so that the second port 22 and the third port 23 are communicated, and the piston rod is pushed to inject the heated carbon dioxide gas in the injector into a human body.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be considered as the protection scope of the present invention.

Claims

1. An angiography system is characterized by comprising an injector (1), a three-way valve (2), an angiography catheter (3) and a gas bomb (4) for storing liquid carbon dioxide, wherein a heat insulation sleeve (41) is covered on the outer side of the gas bomb (4), and a heating device (5) is sleeved on the outer side of a cylinder of the injector (1); the three-way valve (2) is provided with a first port (21), a second port (22) and a third port (23), the first port (21) is communicated with an air outlet of the gas storage bottle (4), the second port (22) is communicated with an injection port of the injector (1), the third port (23) is communicated with an inner cavity of the angiography catheter (3), the communication state of the three-way valve (2) is switched, and the first port (21) can be communicated with the second port (22), or the second port (22) can be communicated with the third port (23).

2. Angiography system according to claim 1, characterized in that the three-way valve (2) is an L-shaped three-way valve.

3. The angiography system according to claim 1, wherein the angiography system comprises a pressure reducing valve (6), the pressure reducing valve (6) is provided with an air inlet end (61) and an air outlet end (62), the air inlet end (61) is in sealing connection with a mouth of the gas bomb (4), and the air outlet end (62) is in sealing connection with the first port (21).

4. Angiography system according to claim 3, wherein the cylinder (4) is provided with a first external thread on its circumference and the gas inlet end (61) is provided with a first internal thread matching the first external thread.

5. The angiography system according to claim 3, wherein the angiography system comprises a first connecting cylinder (63), a second external thread is arranged on the outer peripheral side of the first port (21), an annular groove (621) is arranged on the outer side of the gas outlet end (62), an annular flange (631) extending inwards in the radial direction of the first connecting cylinder (63) is arranged at one end of the first connecting cylinder (63), the annular flange (631) is clamped in the annular groove (621), and a second internal thread matched with the second external thread is arranged at the other end of the first connecting cylinder (63).

6. The angiography system according to claim 1, wherein the angiography system comprises a second connection cylinder (11), wherein the outer circumference side of the second port (22) is provided with a third external thread, one end of the second connection cylinder (11) is fixedly connected to the injection end of the syringe (1), and the other end of the second connection cylinder (11) is provided with a third internal thread matching with the third external thread.

7. The angiography system according to claim 1, wherein the angiography system comprises a third connecting cylinder (24), a connector (31) is arranged at an end of the angiography catheter (3), a fourth external thread is arranged on an outer peripheral side of the connector (31), one end of the third connecting cylinder (24) is fixedly connected to an outer side of the third port (23), and a fourth internal thread matched with the fourth external thread is arranged at the other end of the third connecting cylinder (24).

8. Angiography system according to claim 1, characterized in that the injector (1) is a loop-handle injector.

9. Angiography system according to claim 1, wherein the heating device (5) is a thermostatically heated sleeve.

10. Angiography system according to claim 1, characterized in that the heating device (5) is detachably connected to the injector (1).