CN222195008U - Auxiliary device for reducing blood loss during blood drawing - Google Patents

Abstract

The utility model discloses an auxiliary device for reducing blood loss during blood drawing, including a first tee, a second tee and a fixed pipeline, wherein the first tee is connected to the second tee through the fixed pipeline, and the first tee and the second tee are both provided with valves for controlling the flow of each pipeline in the tee, and the first tee and the second tee are both provided with connection knobs on the sides opposite to each other; a syringe is connected to the pipeline on one side of the first tee, and a heparin cap for blood drawing is provided on the pipeline on one side of the second tee. In the utility model, by providing a new auxiliary device structure for blood drawing, it can be disassembled, replaced, and conveniently connected to different pipeline systems, and can be reused in one pipeline, which can effectively reduce waste during blood drawing, reduce a possible source of infection, avoid discarding patient blood, save the use of syringes, and reduce the generation of contaminated garbage with syringes containing blood, which has the significance of protecting patients, saving funds and environmental protection.

Description

Auxiliary device for reducing blood loss during blood drawing

Technical Field

The utility model relates to an auxiliary device for reducing blood loss of blood drawing, and belongs to the technical field of medical appliances.

Background

Repeated studies have demonstrated that anemia increases the use of allogeneic blood products and further increases the incidence of complications, prolongs hospitalization, and increases mortality.

Blood drawing is a major cause of iatrogenic blood loss, and reducing blood loss during blood drawing is an urgent problem to be solved in the treatment of severe patients. Because of the serious illness and rapid illness change, patients need to draw blood every day for blood test, and some patients even need to draw blood test for multiple times every day. In order to reduce pain, skin and tissue injury and medical care burden of patients caused by repeatedly puncturing skin for blood drawing, the current critical patients can be provided with an indwelling needle for arterial and venous blood drawing as a fluid supplementing, pressure measuring and blood drawing passage, and in addition, for external Membrane pulmonary oxygenation (Extra-corporeal-Membrane-Oxygenation, ecmo for short) and hemodialysis patients, blood drawing test channels exist on a blood permeance machine pipeline before and after the Membrane of the ecmo pipeline. These blood sampling paths, with no exception, need to be primed with saline and placed in the tubing to prevent clotting of the blood in the tubing, so as to prevent thrombus or tubing blockage from continuing use. When drawing blood, the physiological saline in the pipeline needs to be firstly drawn out by the first injector, and a part of blood is simultaneously drawn back, so that the blood is not diluted when the second injector is used for drawing blood for testing. After the first syringe is removed from the blood collection path, the syringe is discarded and the second syringe is replaced. Because the diluted blood in the removed first syringe is returned to the tubing line for reinfusion, the risk of blood flow infection is increased.

Currently, in intensive care units, the technological improvements in blood conservation have been the use of smaller volumes of blood evacuation vessels, and the use of venous arterial blood management protection devices (VAMP). The venous arterial blood management and protection device is a complete pipeline, cannot be detached, has high cost, cannot be connected to ecmo or a venous pipeline, and has the part to be improved.

Disclosure of utility model

The utility model aims to solve the technical problems that the existing device for reducing blood waste during blood drawing is a complete pipeline, cannot be disassembled, has higher cost and cannot be connected on ecmo or venous pipelines.

In order to solve the technical problems, the utility model provides an auxiliary device for reducing blood loss in blood drawing, which solves the problems that the existing device is a complete pipeline, cannot be disassembled, has higher cost and cannot be connected on ecmo or venous pipelines by designing a novel blood drawing auxiliary device.

In order to achieve the technical purpose and the technical effect, the application is realized by the following technical scheme:

The auxiliary device for reducing blood loss of blood drawing comprises a first tee joint, a second tee joint and a fixed pipeline, wherein the first tee joint is communicated with the second tee joint through the fixed pipeline, valves for controlling each pipeline in the tee joints to circulate are arranged on the first tee joint and the second tee joint, and knobs for connection are arranged on one sides, away from each other, of the first tee joint and the second tee joint;

The first tee joint is provided with an injector in a communicating way on one side of the pipeline, and the second tee joint is provided with a heparin cap for blood drawing on one side of the pipeline.

Further, the injector is communicated with the first tee joint through a passage pipe, and the passage pipe is relatively fixed with the first tee joint.

Still further, the syringe includes the syringe, slides and set up the push-and-pull rod in the syringe, the syringe deviates from one side of first tee bend is provided with the syringe handle, the syringe handle with be provided with the protective sheath between the push-and-pull rod.

Furthermore, scale marks are arranged on the outer wall of the injection cylinder.

Further, the length of the fixed pipeline is 5-10 cm.

The auxiliary device for reducing blood loss of blood drawing provided by the utility model has the following advantages:

The utility model can be detached, replaced and conveniently connected in different pipeline systems, can be repeatedly used in one pipeline, can effectively reduce waste during blood drawing, reduces a possible infection source, avoids discarding blood of a patient, saves the use of an injector, reduces the generation of pollution garbage with the blood injector, and has the effects of protecting the patient, saving expenses and protecting the environment.

Drawings

FIG. 1 is a front view of an auxiliary device for reducing blood loss in blood drawing according to an embodiment of the present application;

In the figure:

1-a first tee joint, 2-a second tee joint, 3-a fixed pipeline, 4-a knob and 5-a passage pipe;

6-syringe, 61-syringe barrel, 62-push-pull rod, 7-syringe handle, 8-protective sleeve, 9-scale mark, 10-heparin cap and 11-valve.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which are obtained by a worker of ordinary skill in the art without creative efforts, are within the protection scope of the present utility model based on the embodiments of the present utility model.

Referring to fig. 1, an auxiliary device for reducing blood loss during blood drawing includes a first tee 1, a second tee 2 and a fixed pipeline 3, wherein valves 11 for controlling each pipeline in the tee are installed on the side walls of the first tee 1 and the second tee 2, in this embodiment, the method for installing the valves 11 and controlling the on-off of the pipelines is the prior art, and the first tee 1 and the second tee 2 are communicated through the fixed pipeline 3 without redundant description.

In further embodiments, the fixed pipeline 3 is relatively fixed with the first tee joint 1 and the second tee joint 2, is not movable, and can not be pulled out, the fixed mode is preferably welding, and the fixed pipeline 3 is preferably a transparent plastic pipeline, so that the medical staff can observe the condition of blood circulation in the first tee joint 1 and the second tee joint 2 through the fixed pipeline 3 while the connection stability of the first tee joint 1 and the second tee joint 2 is ensured.

In still further embodiments, the length of the fixed pipeline 3 is between 5 cm and 10cm, and medical staff can select fixed pipelines 3 with different types and lengths according to the use requirement, so that the practicability of the auxiliary device is improved, and meanwhile, the fixed pipeline 3 within the length range also cannot cause the possibility of more waste caused by blood extraction.

Referring to fig. 1, a knob 4 for connecting other pipelines is installed at a connecting port of one end pipeline of the first tee joint 1 and the second tee joint 2, which are away from each other, for example, the connection with an anticoagulation brine side is realized.

Referring to fig. 1, a passage pipe 5 is welded and fixed on a pipe of the first tee 1 different from the knob 4 and the fixed pipe 3, a syringe 6 is connected to one side of the passage pipe 5 deviating from the first tee 1, and the passage pipe 5 fixedly connected with the first tee 1 cannot be moved or rotated down, so that the safety and pollution prevention during operation are ensured.

In a further embodiment, the injector 6 includes a syringe 61 and a push-pull rod 62, the syringe 61 is communicated with the first tee 1 through the passage pipe 5, the push-pull rod 62 is slidably installed in the syringe 61 along a direction approaching or departing from the first tee 1, one end of the push-pull rod 62 departing from the first tee 1 always extends out of the syringe 61, one end of the push-pull rod 62 extending into the syringe 61 is usually provided with a piston, one side of the syringe 61 departing from the first tee 1 is integrally formed with a syringe handle 7, a protective sleeve 8 is sleeved between the syringe handle 7 and the push-pull rod 62, and the protective sleeve 8 is a transparent protective sleeve 8 with a certain degree of elasticity and antibacterial property, and can be a polyvinyl chloride (Polyvinyl chloride, referred to as PVC) protective sleeve 8, or a thermoplastic polyurethane elastomer rubber (Thermoplastic polyurethanes, referred to as TPU) protective sleeve 8.

In a further embodiment, the outer wall of the syringe barrel 61 of the syringe 6 is provided with the scale marks 9, and the scale marks 9 can be used for facilitating medical staff to better control the sucking amount of blood and the pushing amount of anticoagulant reagent, so that the waste of blood is better reduced.

Referring to fig. 1, a heparin cap 10 is mounted on a tube of the second tee 2 different from the knob 4 and the fixed tube 3, and the heparin cap 10 can be used for connecting a blood taking needle or a syringe 6 to realize blood drawing operation.

The auxiliary device for reducing blood loss in blood drawing of the utility model is used as follows:

For convenience of explanation, three connection ports of the first tee 1 are respectively defined as A1, A2 and A3, the position A1 is used for installing a knob 4, the position A2 is used for communicating with the second tee 2, the position A3 is used for communicating with a syringe 6, the three connection ports of the second tee 2 are respectively defined as a B1, a B2 and a B3, the position B1 is used for installing a knob 4, the position B2 is used for communicating with the first tee 1, and the position B3 is used for communicating with a heparin cap 10.

When in use, the end A1 is connected with the anticoagulation saline side, and the end B1 is connected with the catheter close to the skin puncture end. During blood drawing, the three-way knob 4 is screwed at the positions B1, B2 and B3. The other three-way knob 4 is screwed at the positions A2 and A3, the direction A1 is guaranteed to be not communicated, and then the push-pull rod 62 is pulled, so that the piston drives the liquid in the lower passage to enter the injector 6, and simultaneously drives blood in a blood vessel to enter. The knob 4 is then rotated back into the illustrated position. Then the lower knob 4 is screwed to the position shown in the figure, the heparin cap 10 is screwed down to connect the blood taking needle or the syringe 6, and then the knob 4 is screwed until the B1 and the B3 are smooth and the B2 direction is not smooth, so that blood taking is carried out. After blood collection is finished, the B3 direction passage is closed, so that B1 and B2 are unobstructed, and the blood collection tube is taken down. The upper knob 4, A2 and A3 are clear, A1 is not clear, and the diluted blood in the syringe 6 is pushed back into the pipeline. Then A2, A3, A1, and B2, B1 are opened, and then the valve 11 of the upper passage is opened to flush the entire pipeline. The syringe 6 may be repeatedly pushed and pulled to receive the flushing liquid (typically, physiological saline) from above. In this way, the syringe 6, as well as the entire line, can be flushed clean. Finally, the residual blood in the short tube in B3 can be unscrewed from the heparin cap 10 and flushed out while keeping the B2, B3, A1, A2 open. This requires only one blood sample to be taken into the syringe 6, blood is used only for blood tests, and diluted blood is not discarded.

While the utility model has been described with respect to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims. Those skilled in the art will appreciate that many modifications, adaptations and variations of the present utility model can be made using the techniques disclosed herein without departing from the spirit and scope of the utility model, and that many modifications, adaptations and variations of the present utility model are within the scope of the utility model as defined by the appended claims.

Claims (5)

1. An auxiliary device for reducing blood loss of blood drawing is characterized by comprising a first tee joint (1), a second tee joint (2) and a fixed pipeline (3), wherein the first tee joint (1) and the second tee joint (2) are communicated through the fixed pipeline (3), valves (11) for controlling each pipeline in the tee joints to circulate are arranged on the first tee joint (1) and the second tee joint (2), and knobs (4) for connection are arranged on one sides, away from each other, of the first tee joint (1) and the second tee joint (2);

The first tee joint (1) is provided with an injector (6) in a communicating way on one side pipeline, and the second tee joint (2) is provided with a heparin cap (10) for blood drawing on one side pipeline.

2. An auxiliary device for reducing blood loss from blood drawing according to claim 1, wherein the syringe (6) communicates with the first tee (1) through an access tube (5), the access tube (5) being relatively fixed to the first tee (1).

3. An auxiliary device for reducing blood loss in blood drawing according to claim 1 or 2, characterized in that the syringe (6) comprises a syringe barrel (61), a push-pull rod (62) slidingly arranged in the syringe barrel (61), a syringe handle (7) being arranged on the side of the syringe barrel (61) facing away from the first tee (1), a protective sleeve (8) being arranged between the syringe handle (7) and the push-pull rod (62).

4. An auxiliary device for reducing blood loss from blood drawing according to claim 3, characterized in that the outer wall of the syringe (61) is provided with graduations (9).

5. An auxiliary device for reducing blood loss in blood drawing according to claim 1, characterized in that the length of the fixing pipeline (3) is between 5 and 10 cm.