CN-122004975-A - Liquid way assembly and injection device

CN122004975ACN 122004975 ACN122004975 ACN 122004975ACN-122004975-A

Abstract

The application relates to a liquid path assembly and an injection device, wherein a double-flow-direction liquid path unit comprises a first fluid channel and a second fluid channel, a channel cavity of the first fluid channel is used for limiting fluid to flow along a first flow direction only, a channel cavity of the second fluid channel is used for limiting fluid to flow along a second flow direction only, the direction of the first flow direction is different from that of the second flow direction, a single-flow-direction liquid path unit comprises a single-flow-direction fluid channel, a channel cavity of the single-flow-direction liquid path unit is used for limiting fluid to flow along a third flow direction only, and the direction of the third flow direction is the same as that of the first flow direction or the second flow direction. The liquid path component and the injection device are designed in a targeted way, so that the injection device can have the functions of synchronous injection and suction, synchronous conveying of various substances and the like, reduce the pressure in a blood vessel cavity, limit the flow of a closure substance along with blood in the injection process, and prevent deep vein thrombosis or ectopic embolism.

Inventors

WANG JIABO
ZHANG GUANYI
FAN YAMING
WANG LIWEN
YUAN ZHENYU

Assignees

上海蓝脉医疗科技有限公司

Dates

Publication Date: 20260512
Application Date: 20241108

Claims (10)

1. A fluid circuit assembly, the fluid circuit assembly comprising: A two-flow-direction liquid path unit including a first fluid path and a second fluid path, a path lumen of the first fluid path being used to define a flow of fluid in only a first flow direction, a path lumen of the second fluid path being used to define a flow of fluid in only a second flow direction, a direction of the first flow direction being different from a direction of the second flow direction, and/or, The single-flow-direction liquid path unit comprises a single-flow-direction liquid path, wherein a channel cavity of the single-flow-direction liquid path unit is used for limiting the flow of fluid along a third flow direction, and the direction of the third flow direction is the same as the direction of the first flow direction or the direction of the second flow direction.
2. The fluid circuit assembly of claim 1, wherein the dual flow direction fluid circuit unit comprises: a first fluid conduit, a conduit lumen of the first fluid conduit being configured to form the first fluid passage, the first flow direction being from a proximal conduit orifice of the first fluid conduit toward a distal conduit orifice; An internal storage device having a storage chamber for storing a fluid, a proximal orifice of the first fluid line being connected to the storage chamber of the internal storage device, a distal orifice of the first fluid line being for discharging the fluid stored in the storage chamber in a distal direction; and the pipeline inner cavity of the second fluid pipeline is used for forming the second fluid channel, and the second flow direction is the direction from the distal pipe orifice to the proximal pipe orifice of the second fluid pipeline.
3. The fluid circuit assembly of claim 2, wherein the dual flow direction fluid circuit unit comprises: A first flow control element coupled to the first fluid conduit for defining a flow of fluid within the first fluid passage in only a first flow direction; And/or the number of the groups of groups, A second flow control element coupled to the second fluid conduit for defining a flow of fluid within the second fluid passage in only a second flow direction.
4. A fluid circuit assembly according to claim 3 wherein said first flow control member is a one-way valve and/or, The second flow control element is a one-way valve.
5. A fluid circuit assembly according to claim 3, wherein the dual flow direction fluid circuit unit comprises: a first flow control device coupled to at least one of the first fluid line and the second fluid line for controlling fluid flow within at least one of the first fluid line and the second fluid line.
6. The fluid circuit assembly of claim 2 wherein said distal orifice of said first fluid circuit is oriented in the same direction as said distal orifice of said second fluid circuit and/or wherein said distal orifice of said second fluid circuit is oriented in the same direction as said distal orifice of said first fluid circuit, The proximal nozzles of the first fluid line are oriented in the same direction as the proximal nozzles of the second fluid line.
7. The fluid circuit assembly of claim 1, wherein the single flow direction fluid circuit unit comprises: The fluid cylinder is provided with a cylinder inner cavity, a far-end cylinder opening and a near-end cylinder opening, wherein the far-end cylinder opening and the near-end cylinder opening are communicated with the cylinder inner cavity, the cylinder inner cavity of the fluid cylinder is used for forming the unidirectional fluid channel, and the third flow direction is from the near-end cylinder opening of the fluid cylinder to the far-end cylinder opening; The piston piece is movably assembled in the cylinder inner cavity of the fluid cylinder in a piston mode through the proximal cylinder opening of the fluid cylinder.
8. The fluid circuit assembly of claim 7, wherein the single flow direction fluid circuit unit comprises: and the second liquid flow control device is connected with the piston piece and is used for controlling the piston piece to move in the cylinder inner cavity of the fluid cylinder so as to drive the fluid to flow in the cylinder inner cavity of the fluid cylinder.
9. The fluid circuit assembly of claim 1 wherein said two-way fluid circuit unit and said single-way fluid circuit unit are each configured in at least one number and/or, The direction of the first flow direction is opposite to the direction of the second flow direction.
10. An injection device comprising the fluid circuit assembly of any one of claims 1-9.

Description

Liquid way assembly and injection device Technical Field The application relates to the technical field of medical equipment, in particular to a liquid path assembly and an injection device. Background Varicose veins (Varicosis), especially varicose veins of the lower limbs, are the most important diseases in the venous system, and are one of the most common diseases in vascular diseases of the extremities, and the symptoms of varicose veins are light and heavy, and the symptoms of light and heavy patients feel acid, sink, distending pain, are easy to fatigue and hypodynamia, occur when standing still, and disappear rapidly after walking or lying down. Lesions are still reversible in this stage. However, as the symptom degree increases, the superficial vein of the affected limb bulges, expands, even turns or is in a lump shape, and is more obvious when standing. Skin nutritional changes, skin thinning, desquamation, pigmentation, eczematoid dermatitis, lipid scleroderma, and white atrophy. Patients with itching may scratch the part, become secondarily infected, and form venous ulcers. In addition, thrombophlebitis, acute hemorrhage, etc. may also occur. Typically, varicose veins can be made by closing an intravenous injection and removing excess blood from the vein. Injection and aspiration may be performed in a controlled manner to prevent the drug from diffusing into the remaining vasculature. While aspiration may improve or enhance the effectiveness of the drug by reducing dilution of blood or other body fluids, as well as by creating spasticity and lower internal diameter vessels. Aspiration may reduce the number of fragments, tissue particles, blood clots, or calcified particles at the treatment site. Currently, among the conventional surgical formulas for treating varicose veins, the minimally invasive surgical formulas are mainly based on the technique of closing blood vessels by injection of foam sclerosant and intravenous substances. While foam sclerosant therapy is relatively non-invasive, foam sclerosant therapy has a high recurrence rate and potential for undesirable side effects, and, as the case may be, typically requires the patient to wear a compression sock for about 1 week to about 4 weeks after surgery. The intravenous substance injection technology uses the injection device to drive the closure substance into the blood vessel to be closed through the catheter, has the advantages of little injury, simple operation and better appearance after operation, does not need to wear elastic socks, and can quickly recover normal activities. In contrast, intravenous injection of a substance closes a blood vessel more safely and efficiently. However, the existing injection device for varicose vein treatment generally has the problems of single injection precision, small application range, insufficient and uneven vascular closure, ectopic embolism caused by the flow deviation of injection substances in the body, and the like. In addition, there is a need for injection and removal of fluids from patients, or simultaneous injection of multiple medications, during some therapeutic procedures. For example, abscess treatment may be accomplished by draining pus and other debris from a body cavity, and injecting saline into the body cavity for flushing the residue. The injection and withdrawal operations need to be performed sequentially and repeatedly until all pus and other debris is cleared and the body cavity is cleaned. With respect to the operation of the above-described therapeutic procedure, the existing injection devices are not convenient for performing the above-mentioned operations, affecting the progress of the operation and the effect of the operation. Disclosure of Invention In view of the foregoing, it is desirable to provide a fluid path assembly and an injection device that address at least one of the above-mentioned problems. The application provides a liquid path assembly, which comprises: A two-flow-direction liquid path unit including a first fluid path and a second fluid path, a path lumen of the first fluid path being used to define a flow of fluid in only a first flow direction, a path lumen of the second fluid path being used to define a flow of fluid in only a second flow direction, a direction of the first flow direction being different from a direction of the second flow direction, and/or, The single-flow-direction liquid path unit comprises a single-flow-direction liquid path, wherein a channel cavity of the single-flow-direction liquid path unit is used for limiting the flow of fluid along a third flow direction, and the direction of the third flow direction is the same as the direction of the first flow direction or the direction of the second flow direction. In one embodiment, the dual fluid circuit unit includes: a first fluid conduit, a conduit lumen of the first fluid conduit being configured to form the first fluid passage, the first flow direction being from a proximal c