CN209629669U - blood vessel sheath - Google Patents

Abstract

The utility model provides a kind of blood sampling vagina vasorum, can be inserted into as a hollow expansion pipe is installed in reserved sheath in human vas, which exposes sheath, and tail end is equipped with lever, the mesoporous of lever tail end and expansion pipe orifice perforation；Sheath tail end is equipped with handle, and being respectively equipped between handle and lever can corresponding connected screwed union.When use, it is intravascular that medical micropuncture is needled into upper arm under B-ultrasound, by medical guide seal wire after micropuncture pin inner chamber feeding blood vessel, exit micropuncture needle, seal wire exposed junction will be guided to pierce into vagina vasorum through the front end of hollow expansion pipe again, and push vagina vasorum to intravascular along guidance seal wire, hollow expansion pipe is exited and guide seal wire, hemostix can be screwed on blood drawing in intravascular by indwelling sheath by the spiral connector of sheath tail end.

Description

blood vessel sheath

technical field

The utility model belongs to an auxiliary medical device for interventional treatment, in particular to a blood vessel sheath for blood collection.

Background technique

In the collection of blood components, there are often blood donors with thick subcutaneous fat and deep blood vessels that cannot be touched, making venipuncture difficult. Traditional venipuncture cannot guarantee a successful venipuncture. For such blood donors, declining to donate blood is easy to bruise The blood donation enthusiasm of blood donors, repeated venipuncture brings physical and mental pain to blood donors, and is not conducive to the development and growth of the team of blood component blood donors, and also has a negative impact on the promotion of unpaid blood donation; in addition, clinically, autoimmune diseases, poisoning , hyperviscosity syndrome, hyperleukocytic leukemia and other patients need therapeutic blood component apheresis. Some patients have difficulty in venipuncture. If traditional venipuncture fails, it will not only aggravate the pain of the patient, but also seriously cause the patient to lose the opportunity for therapeutic blood component collection. , Delay the patient's condition. Therefore, it is necessary for blood collection and supply institutions and clinics to improve the venipuncture method for blood component collection to avoid the physical and mental pain caused by venipuncture failure to blood donors and patients, so as to promote the healthy development of voluntary blood donation and ensure the smooth progress of patient treatment.

Contents of the invention

The utility model provides a blood vessel sheath for blood collection. Under the guidance of ultrasonic waves, the improved Seidinger technology can be used to place the sheath tube in the blood vessel of the human body, and when the blood components are collected, it can be connected and matched with the blood collection device through a spiral joint to ensure that the blood The smooth implementation of component collection work.

The utility model includes a spiral joint, and the adopted technical scheme is that a hollow expansion tube is inserted into a sheath tube that can be inserted into a human blood vessel as an indwelling tube. The middle hole at the tail end of the handle communicates with the inner hole of the expansion tube; a handle is provided at the tail end of the sheath tube, and a screw joint that can be connected correspondingly is provided between the handle and the operating handle.

In the above technical solution: the sheath tube and the built-in hollow expansion tube gradually become thinner from the rear end to the front end, forming a micro-conical whole.

The diameter of the sheath is 1.5-5mm.

The utility model has the following advantages and effects: through the above-mentioned technical scheme, since several parts are scientifically and ingeniously combined into a vascular sheath that can be pushed into the blood vessel of the human body along the guide wire, when in use, the hollow expansion tube is first inserted from the end of the spiral joint into the Insert it into the sheath, and rotate the operating handle clockwise to securely lock it through the screw joint between the handle and the operating handle. Then, the exposed end of the guide wire that has entered the punctured blood vessel is penetrated through the front end of the hollow expansion tube into the vascular sheath that has been reliably locked, and the vascular sheath is pushed along the guide wire into the blood vessel, and exits the hollow through the counterclockwise rotation of the operating handle. Dilate the tube and guide wire, indwell the sheath in the blood vessel, take the blood collection device and tighten its joint with the screw joint in the handle to realize blood component collection, thus solving the problem of difficult venipuncture for some blood donors or patients. It is beneficial to reduce the suffering of blood donors or patients and reduce the work troubles of blood collection personnel.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.

Fig. 1 is the structural representation of the utility model.

Detailed ways

As shown in Figure 1: the sheath tube 2 that can be inserted into human blood vessels as a reservation is pierced with a hollow expansion tube 3. The front end of the hollow expansion tube 3 exposes the sheath tube 2, and the tail end is provided with an operating handle 5. The middle hole 4 at the tail end communicates with the inner hole of the hollow expansion tube 3 ; the tail end of the sheath tube 2 is provided with a handle 1 , and a screw joint 6 that can be connected correspondingly is provided between the handle 1 and the operating handle 5 . The sheath tube 2 and the built-in hollow expansion tube 3 gradually become thinner from the rear end to the front end, forming a micro-tapered whole. The diameter of the sheath tube 2 is 1.5-5mm.

When in use, under the guidance of ultrasound, insert the medical micropuncture needle into the blood vessel of the upper arm, send the medical guide wire into the blood vessel from the inner cavity of the micropuncture needle, withdraw the micropuncture needle, and then pass the exposed end of the guide wire through the hollow expansion tube The front end of 3 penetrates the vascular sheath that has been reliably locked, and pushes the vascular sheath into the blood vessel along the guide wire, and through the counterclockwise rotation of the operating handle 5, withdraws the hollow dilation tube 3 and the guide wire, and indwells the sheath 2 in the blood vessel , that is, the blood collection device can be screwed through the helical connector 6 at the tail end of the sheath tube 2 to draw blood, so that the staff can smoothly collect blood components through the indwelling sheath tube 2, avoiding repeated blood vessel punctures for blood donors and the physical and mental suffering of patients.

The blood vessel sheath for blood collection is made of fluoroplastics such as PTFE, FEP, ETFE and the like.

According to the current level of medical technology, it is still very difficult to directly insert the blood collection needle into the blood vessel under the guidance of medical ultrasound, and it is difficult to ensure that the blood collection needle is accurately inserted into the blood vessel at one time. Under the guidance of ultrasound, the technology of inserting the medical micropuncture needle into the blood vessel of the upper arm and sending the medical guide wire into the blood vessel from the lumen of the micropuncture needle has been widely used in clinic.

Claims (3)

1. a kind of blood sampling vagina vasorum, including screwed union (6), it is characterised in that: can be inserted into human vas as reserving A hollow expansion pipe (3) is installed in sheath (2), sheath (2) are exposed in the front end of the hollow expansion pipe (3), and tail end is equipped with operation Handle (5), the mesoporous (4) of lever (5) tail end and expansion pipe (3) inner hole perforation；Sheath (2) tail end is equipped with handle (1), in handle It can corresponding connected screwed union (6) being respectively equipped between (1) and lever (5).

2. blood sampling vagina vasorum according to claim 1, it is characterised in that: the sheath (2) and built-in hollow expansion Pipe (3) gradually attenuates from rear end to front end, and it is whole to form micro- taper.

3. blood sampling vagina vasorum according to claim 1, it is characterised in that: the diameter of the sheath (2) is 1.5~5mm.