Carbon dioxide radiography injection device

Abstract

The invention provides a carbon dioxide radiography injection device which comprises a needle cylinder, a pen holder is embedded in the needle cylinder in the axial direction in a sliding mode, a V-shaped damping handle is arranged on the outer side of the needle cylinder and connected to the bottom of the needle cylinder, when the V-shaped structure of the damping handle contracts inwards, the pen holder is clamped from the two sides, a finger hook part of a traditional injector is replaced with the V-shaped damping handle, and therefore the needle cylinder is convenient to use. When injection operation is carried out, the damping handle is influenced by force applied by fingers, can be bent inwards to different degrees according to the magnitude of the stress, and then is in contact with a penholder structure, forms a clamping effect on the penholder structure and generates resistance to axial movement of a penholder, that is, resistance is applied to probing of the penholder when the applied force is too large, so that control over the injection force is achieved, and the service life of the penholder is prolonged. Good development prospects are realized.

Description

Technical Field

[0001] The present invention relates to the field of medical angiography, in particular to a carbon dioxide angiography injection device. Background Art

[0002] Angiography is an essential examination method for interventional radiology diagnosis and treatment. By injecting contrast agent into the blood vessels, angiography can accurately reflect the location and extent of vascular lesions because X-rays cannot penetrate the contrast agent, thereby providing a basis for disease diagnosis and treatment.

[0003] However, most existing carbon dioxide angiography equipment is a non-automated hand-push injector, which requires the operator to manually extract and inject. During this process, the operator cannot accurately control the amount of carbon dioxide injected, nor can the carbon dioxide gas be injected at a uniform and linear speed. If the injection speed is too fast, it will cause discomfort to the patient.

[0004] Therefore, a novel carbon dioxide angiography injection device is needed to solve the above problems. Summary of the Invention

[0005] The object of the present invention is to provide a carbon dioxide angiography injection device.

[0006] To achieve the above object, the present invention provides the following technical solutions: A carbon dioxide radiography injection device comprises a syringe, in which a pen holder is embedded and slidably arranged along the axial direction. A V-shaped damping handle is provided on the outside of the syringe and connected to the bottom of the syringe. When the V-shaped structure of the damping handle contracts inward, the pen holder is clamped from both sides.

[0007] As a further solution of the present invention: the syringe includes a medicine barrel, an injection port and a pressure-stabilizing port. The syringe is a cylindrical structure with an open top surface. The pen shaft is slidably embedded in the medicine barrel. The bottom of the medicine barrel is provided with a protruding injection port and a pressure-stabilizing port. The pressure-stabilizing port is connected to a pressure-stabilizing ring with an air bag inside through an air tube.

[0008] As a further solution of the present invention: the pressure-stabilizing ring includes a ring body, a connecting tube, an airbag and a clamping block. The pressure-stabilizing ring is sleeved on the outside of the V-shaped structure of the damping handle. Grooves are opened on both sides of the pressure-stabilizing ring corresponding to the V-shaped structure of the damping handle. The grooves are filled with airbags and connected to the air guide tube through the connecting tube. There is a clamping block on the opening side of the groove attached to the airbag and in contact with the damping handle.

[0009] As a further solution of the present invention: the pressure stabilizing ring is sleeved on the outside of the damping handle at one end close to the opening.

[0010] As a further solution of the present invention: the pen barrel includes a cross rod, a rubber head and a ring handle, the two ends of the cross handle are respectively connected to the rubber head and the ring handle, one end of the rubber head is slidably embedded in the syringe, the damping handle includes a connecting ring and a push-pull handle, the connecting ring is connected to the bottom of the syringe, and there is a group of push-pull handles on both sides of the connecting ring that maintain a V-shaped arrangement at a 4° inclination angle.

[0011] As a further solution of the present invention: a U-shaped clamping claw corresponding to the side structure of the cross handle is provided on the inner side of the push-pull handle.

[0012] As a further solution of the present invention, the side of the clamping jaw facing the cross handle is a trapezoidal groove structure that is larger on the outside and smaller on the inside.

[0013] As a further solution of the present invention: the bottom surface of the trapezoidal groove of the clamping jaw is coated with a rubber layer.

[0014] As a further solution of the present invention: there are protruding clamps on both sides of the bottom of the ring handle, and a limiting groove is recessed on the inner top of the push-pull handle. When the pen shaft is pressed into the syringe, the clamps are embedded in the limiting groove to support the inner side of the damping handle. Beneficial effects

[0015] 1. The outer side of the syringe of the present invention is provided with a V-shaped damping handle connected to the bottom of the syringe. When the V-shaped structure of the damping handle contracts inward, the pen shaft is clamped from both sides. The finger hook part of the traditional syringe is replaced by the V-shaped damping handle. When performing an injection operation, the damping handle is affected by the force applied by the finger and will bend inward to varying degrees according to the magnitude of the force, and then contact the pen shaft structure, forming a clamping effect on the pen shaft structure, and generating resistance to the axial movement of the pen shaft, that is, when the force applied is too large, resistance is applied to the penetration of the pen shaft, thereby achieving control of the injection force.

[0016] 2. The pressure-stabilizing ring of the present invention is sleeved on the outside of the V-shaped structure of the damping handle. Grooves are provided on both sides of the pressure-stabilizing ring corresponding to the V-shaped structure of the damping handle. The grooves are filled with air bags and connected to the air guide tube through a connecting tube. A clamping block is provided on the opening side of the groove and is attached to the air bag and in contact with the damping handle. By setting the clamping blocks driven by the air bags on both sides of the pressure-stabilizing ring, when the injection pressure is too high, the pressure-stabilizing ring can not only absorb the gas through the expansion of the air bags to play a decompression role, but also drive the clamping blocks on both sides to pop out and compress the damping handle structure, so that the V-shaped structure of the damping handle probes inward, clamps the pen shaft, and provides damping force.

[0017] 3. The bottom of the ring handle of the present invention has protruding clamping heads on both sides, and the inner top of the push-pull handle is recessed with a limiting groove. When the pen shaft is pressed into the syringe, the clamping heads are embedded in the limiting groove to support the inner side of the damping handle, thereby supporting the inner side of the damping handle structure when the injection device is not in use, avoiding the problem that the V-shaped structure of the damping handle lacks support and is deformed by external force during transportation and storage, affecting the accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the structural explosion of the present invention.

[0020] Figure 3 It is a schematic diagram of the syringe structure of the present invention.

[0021] Figure 4 It is a schematic diagram of the penholder structure of the present invention.

[0022] Figure 5 It is a schematic diagram of the connection between the damping handle and the pressure stabilizing ring of the present invention.

[0023] Figure 6 This is a schematic diagram of the push-pull handle structure of the present invention.

[0024] Figure 7 It is a schematic diagram of the structure of the voltage stabilizing ring of the present invention.

[0025] Figure 1-7 In: 1. Syringe; 11. Medicine barrel; 12. Injection port; 13. Pressure stabilizing port; 2. Pen holder; 21. Cross rod; 22. Rubber head; 23. Ring handle; 24. Clamp; 3. Damping handle; 31. Connecting ring; 32. Push-pull handle; 33. Clamping claw; 34. Limiting groove; 35. Connecting rod; 4. Air guide tube; 5. Pressure stabilizing ring; 51. Ring body; 52. Connecting tube; 53. Air bag; 54. Clamping block. DETAILED DESCRIPTION

[0026] The following is a diagram of the present invention Figure 1-Figure 7 , clearly and completely describe the specific technical solutions of the present invention; See also Figure 1-Figure 7 , Figure 1 Schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 It is a schematic diagram of the explosion of the structure of the present invention; Figure 3 It is a schematic diagram of the syringe structure of the present invention; Figure 4 This is a schematic diagram of the penholder structure of the present invention; Figure 5 This is a schematic diagram of the connection between the damping handle and the pressure stabilizing ring of the present invention; Figure 6 This is a schematic diagram of the push-pull handle structure of the present invention; Figure 7 It is a schematic diagram of the structure of the voltage stabilizing ring of the present invention.

[0027] This embodiment provides a carbon dioxide radiography injection device, comprising a syringe 1, in which a pen holder 2 is axially slidably embedded. A V-shaped damping handle 3 is provided on the outside of the syringe 1 and connected to the bottom of the syringe 1. When the V-shaped structure of the damping handle 3 is retracted inward, the pen holder 2 is clamped from both sides. The finger hook part of the traditional syringe is replaced by a V-shaped damping handle 3. During the injection operation, the damping handle 3 is affected by the force applied by the finger and will bend inward to varying degrees according to the magnitude of the force, and then contact the pen shaft 2 structure, forming a clamping effect on the pen shaft 2 structure, and generating resistance to the axial movement of the pen shaft 2, that is, when the force applied is too large, resistance is applied to the penetration of the pen shaft 2, thereby achieving control of the injection force.

[0028] The syringe 1 includes a medicine barrel, an injection port 12, and a pressure-stabilizing port 13. The syringe 1 is a cylindrical structure with an open top surface. The pen holder 2 is slidably embedded in the medicine barrel. The bottom of the medicine barrel is provided with a protruding injection port 12 and a pressure-stabilizing port 13. The pressure-stabilizing port 13 is connected to the pressure-stabilizing ring 5 with an air bag 53 through an air tube. The air bag 53 in the pressure stabilizing ring 5 connected to the cartridge can be expanded when the injection pressure is too high, so as to absorb the injection gas and stabilize the pressure.

[0029] Specifically, the pressure stabilizing ring 5 includes a ring body 51, a connecting tube 52, an airbag 53, and a clamping block 54. The pressure stabilizing ring 5 is sleeved on the outside of the V-shaped structure of the damping handle 3. Grooves are opened on both sides of the pressure stabilizing ring 5 at positions corresponding to the V-shaped structure of the damping handle 3. The grooves are filled with airbags 53 and connected to the air guide tube 4 through the connecting tube 52. A clamping block 54 is attached to the airbag 53 on the opening side of the groove and contacts the damping handle 3. By setting the clamping blocks 54 driven by the air bags 53 on both sides of the pressure stabilizing ring 5, when the injection pressure is too high, the pressure stabilizing ring 5 not only absorbs the gas through the expansion of the air bags 53 to play a decompression role, but also drives the clamping blocks 54 on both sides to pop out and compress the damping handle 3 structure, so that the V-shaped structure of the damping handle 3 is probed inward, clamping the pen body 2 and providing damping force.

[0030] Furthermore, the pressure stabilizing ring 5 is sleeved on the end of the damping handle 3 close to the opening, thereby increasing the length of the force arm and improving the lateral driving force of the pressure stabilizing ring 5 on the damping handle 3 structure.

[0031] Among them, the pen body 2 includes a cross rod 21, a rubber head 22 and a ring handle 23. The two ends of the cross handle are respectively connected to the rubber head 22 and the ring handle 23. One end of the rubber head 22 is slidably embedded in the syringe 1. The damping handle 3 includes a connecting ring 31 and a push-pull handle 32. The connecting ring 31 is connected to the bottom of the syringe 1. There is a group of push-pull handles 32 on both sides of the connecting ring 31 that maintain a V-shaped arrangement at a 4° inclination angle.

[0032] Specifically, the inner side of the push-pull handle 32 is provided with a U-shaped clamping claw 33 corresponding to the side structure of the cross handle. The protruding clamping claw 33 structure compensates for the gap between the syringe 1 and the cross handle, thereby achieving effective contact between the push-pull handle 32 and the cross handle, and the U-shaped structure improves the gripping force of the cross handle structure, thereby increasing the damping feeling.

[0033] Furthermore, the side of the clamping jaw 33 facing the cross handle is a trapezoidal groove structure that is larger on the outside and smaller on the inside, thereby guiding the movement of the cross handle structure into the groove of the clamping jaw 33, preventing the push-pull handle 32 from being distorted and disengaged from the cross handle structure after being subjected to force.

[0034] Furthermore, the bottom surface of the trapezoidal groove of the clamping jaw 33 is coated with a rubber layer, thereby achieving stable clamping of the cross rod 21 after clamping, providing damping for the axial movement of the cross rod 21, and playing a deceleration role.

[0035] Specifically, there are protruding clamping heads 24 on both sides of the bottom of the ring handle 23, and a limiting groove 34 is recessed on the inner top of the push-pull handle 32. When the pen holder 2 is pressed into the syringe 1, the clamping heads 24 are embedded in the limiting groove 34 to support the inner side of the damping handle 3; Therefore, the damping handle 3 structure is supported on the inside when the injection device is not in use, thereby avoiding the problem that the V-shaped structure of the damping handle 3 lacks support and is deformed by external forces during transportation and storage, affecting the accuracy.

[0036] When implementing the technical solution described in this embodiment, during the injection process, when the injector extracts carbon dioxide and injects, as the thumb applies force after hooking the push-pull handle 32 with the fingers, the push-pull handle 32 is deformed by the axial force, and the V-shaped structure moves closer to the vertical direction. When the injection force is too strong, the clamping claws 33 on both sides will clamp the inner cross rod 21, providing damping for the pushing of the pen shaft 2, thereby controlling the injection force and thus the injection flow rate. After the injector reduces the injection force, the axial force on the push-pull handle 32 is also reduced, thereby achieving the release of the pen shaft 2 structure; The setting of the pressure stabilizing ring 5 plays a role in absorbing excessive injection pressure and making the injection flow curve smooth. At the same time, it can also clamp the auxiliary push-pull handle 32 when the injection pressure is too high.

Claims

1. A carbon dioxide radiographic injection device, characterized in that: include: A syringe (1), wherein a pen holder (2) is axially slidably embedded in the syringe (1); The damping rod has a V-shaped damping handle (3) on the outside of the syringe (1) and is connected to the bottom of the syringe (1). When the V-shaped structure of the damping handle (3) contracts inward, the pen holder (2) is clamped from both sides.

2. A carbon dioxide radiography injection device according to claim 1, characterized in that: The syringe (1) comprises a medicine barrel, an injection port (12) and a pressure stabilizing port (13). The syringe (1) is a cylindrical structure with an opening on the top surface. The pen shaft (2) is slidably embedded in the medicine barrel. The bottom of the medicine barrel is provided with a protruding injection port (12) and a pressure stabilizing port (13). The pressure stabilizing port (13) is connected to a pressure stabilizing ring (5) with an air bag (53) therein through an air tube.

3. A carbon dioxide radiography injection device according to claim 2, characterized in that: The pressure stabilizing ring (5) comprises a ring body (51), a connecting tube (52), an airbag (53) and a clamping block (54). The pressure stabilizing ring (5) is sleeved on the outer side of the V-shaped structure of the damping handle (3). Grooves are provided on both sides of the pressure stabilizing ring (5) at positions corresponding to the V-shaped structure of the damping handle (3). The grooves are filled with airbags (53) and are connected to the air guide tube (4) through the connecting tube (52). A clamping block (54) is provided on the opening side of the groove and is attached to the airbag (53) and in contact with the damping handle (3).

4. A carbon dioxide radiography injection device according to claim 3, characterized in that: The pressure stabilizing ring (5) is sleeved on the outer end of the damping handle (3) close to the opening.

5. The carbon dioxide radiography injection device according to claim 1, characterized in that: The pen holder (2) comprises a cross rod (21), a rubber head (22) and a ring handle (23), the two ends of the cross handle are respectively connected to the rubber head (22) and the ring handle (23), one end of the rubber head (22) is slidably embedded in the syringe (1), and the damping handle (3) comprises a connecting ring (31) and a push-pull handle (32), the connecting ring (31) is connected to the bottom of the syringe (1), and a group of push-pull handles (32) are arranged in a V-shape with a 4° inclination angle on both sides of the connecting ring (31).

6. The carbon dioxide radiography injection device according to claim 5, characterized in that: The inner side of the push-pull handle (32) is provided with a U-shaped clamping claw (33) corresponding to the side structure of the cross handle.

7. The carbon dioxide radiography injection device according to claim 6, characterized in that: The side of the clamping claw (33) facing the cross handle is a trapezoidal groove structure that is larger on the outside and smaller on the inside.

8. The carbon dioxide radiography injection device according to claim 7, characterized in that: The bottom surface of the trapezoidal groove of the clamping jaw (33) is coated with a rubber layer.

9. The carbon dioxide radiography injection device according to claim 5, characterized in that: The bottom sides of the ring handle (23) are provided with protruding clamping heads (24), and the inner top of the push-pull handle (32) is recessed with a limiting groove (34). When the pen shaft (2) is pressed into the syringe (1), the clamping heads (24) are embedded in the limiting groove (34) to support the inner side of the damping handle (3).

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