CN210963371U

CN210963371U - Blood transfusion device

Info

Publication number: CN210963371U
Application number: CN201921301197.7U
Authority: CN
Inventors: 张洁; 黄忠
Original assignee: Zigong First Peoples Hospital
Current assignee: Zigong First Peoples Hospital
Priority date: 2019-08-12
Filing date: 2019-08-12
Publication date: 2020-07-10
Anticipated expiration: 2029-08-12

Abstract

The utility model discloses a blood transfusion device, which comprises a Y-shaped catheter, wherein a saline bottle contact pin and a blood transfusion bag contact pin are respectively connected on a branch pipe of the Y-shaped catheter; the tail end of the main pipe of the Y-shaped catheter is provided with a connector connected with an indwelling needle or a scalp needle; the method is characterized in that: the transfusion bag contact pin comprises a needle base and a contact pin body; the needle sleeve is sleeved outside the needle inserting body, and the needle inserting body can extend and retract in the needle sleeve. The transfusion device with the structure has the advantages that the needle sleeve is arranged on the transfusion bag insertion needle, and the needle sleeve can be used as a protective sleeve to prevent the insertion needle from being polluted when the insertion needle is not used. And the contact pin is telescopic, so that the length of the part of the contact pin exposed out of the needle sleeve can be conveniently adjusted, and the needle sleeve is suitable for blood transfusion bags of various models and specifications. The blood transfusion bag is prevented from being punctured due to the overlong exposed part of the insertion needle.

Description

Blood transfusion device

Technical Field

The utility model relates to a device for blood transfusion connected between a blood transfusion bag and a human body.

Background

The blood transfusion apparatus for establishing the passage between blood and vein consists of bottle inserting needle, air inlet needle or hole, needle head protecting cap, Y-shaped three-way pipeline, dropper, pipeline, medicine adding port, flow regulator, injection part, vein needle or injection needle.

One bottle inserting needle of the existing Y-shaped blood transfusion device is inserted into a physiological saline bottle, and the other bottle inserting needle is inserted into a blood bag. The physiological saline bottle is generally a glass bottle or a plastic bottle and is not easily punctured. The blood bag is a soft bag, and the blood bag can be punctured due to the overlong needle during insertion. The length of the soft plug (for inserting needle) of the blood bag can be different according to different blood bag models, but the length of the needle cannot be adjusted. In order to ensure that the needle can penetrate the soft plug, the length of the needle is designed to have certain redundancy, so that a longer needle head is exposed in the blood bag when the short soft plug is penetrated, and the blood bag can be punctured carelessly.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a blood transfusion apparatus, which utilizes a needle sheath to limit the length of the needle, and can be adjusted according to the size of the soft plug of the blood bag.

In order to solve the technical problems, the technical proposal of the utility model is to adopt a blood transfusion device, which comprises a Y-shaped catheter, wherein a saline bottle contact pin and a blood transfusion bag contact pin are respectively connected on a branch pipe of the Y-shaped catheter; the tail end of the main pipe of the Y-shaped catheter is provided with a connector connected with an indwelling needle or a scalp needle; the method is characterized in that: the transfusion bag contact pin comprises a needle base and a contact pin body; the needle sleeve is sleeved outside the needle inserting body, and the needle inserting body can extend and retract in the needle sleeve.

As an improvement, the back end of the needle sleeve is provided with a knob, and an inward extending cylinder extending into the needle sleeve is fixed on the knob; the inner extending cylinder is provided with an internal thread; the pin body penetrates through the knob, and the pin base is in threaded fit with the inner extending barrel; the needle seat side wall is provided with an axial sliding groove, and the inner wall of the needle sleeve is axially provided with an anti-rotation convex block matched with the sliding groove. When the knob is rotated, the inward extending cylinder rotates, and the needle seat in threaded fit with the inward extending cylinder only moves forwards and backwards when the anti-rotation lug exists and drives the contact pin body to stretch.

As a further improvement, the sliding grooves are four and are uniformly distributed along the circumference of the needle base, and the anti-rotation convex blocks are also four. So that the stress is uniform and the deviation is avoided.

As a further improvement, the needle hub tip is closed with a membrane. The film is burst through the extension of the contact pin body when the dustproof structure is used for dust prevention.

As an improvement, a dropper is arranged on the Y-shaped catheter main pipe, and a filter screen is arranged in the dropper. Used for filtering the sediment in the blood and avoiding entering the body of a patient.

As an improvement, the tail end of the main pipe of the Y-shaped catheter is provided with double heads, and connectors for connecting with an indwelling needle or a scalp needle are arranged on the tail end of the main pipe of the Y-shaped catheter. Is used for connecting two indwelling needles or scalp needles to accelerate the blood transfusion speed.

As an improvement, the end part of the contact pin body is a round head, and an opening of a liquid inlet of the contact pin body is formed in the side wall. Avoid the contact pin too sharp, reduce the risk that blood transfusion bag was punctured.

The utility model discloses an useful part lies in: the transfusion device with the structure has the advantages that the needle sleeve is arranged on the transfusion bag insertion needle, and the needle sleeve can be used as a protective sleeve to prevent the insertion needle from being polluted when the insertion needle is not used. And the contact pin is telescopic, so that the length of the part of the contact pin exposed out of the needle sleeve can be conveniently adjusted, and the needle sleeve is suitable for blood transfusion bags of various models and specifications. The blood transfusion bag is prevented from being punctured due to the overlong exposed part of the insertion needle. In addition, after the use, the inserting needle can be withdrawn into the needle sleeve through the knob to avoid scratching.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view of a transfusion bag insertion needle.

The labels in the figure are: 1Y-shaped catheter, 2 saline bottle insertion needle, 3 blood transfusion bag insertion needle, 4 dropper, 5 filter screen, 6 flow regulator, 7 joint, 8 throttling device, 31 insertion needle body, 32 needle base, 33 needle sleeve, 34 knob, 35 internal extending cylinder, 36 anti-rotation bump, 37 liquid inlet and 38 film.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the specific embodiments.

As shown in fig. 1 and 2, the utility model comprises a Y-shaped catheter 1, wherein a saline bottle insertion needle 2 and a blood transfusion bag insertion needle 3 are respectively connected to a branch pipe of the Y-shaped catheter 1, and a throttling device is arranged on each branch pipe; the tail end of the main pipe of the Y-shaped catheter 1 is provided with a connector 7 connected with an indwelling needle or a scalp needle; preferably, the ends of the main tube of the Y-shaped catheter 1 are also provided with double heads, and are provided with connectors 7 for connecting with an indwelling needle or a scalp needle. When not in use, the spare connector 7 can be closed by a cover to avoid blood flowing out and being polluted. A dropper 4 and a flow regulator 6 are arranged on the Y-shaped catheter main pipe 1, and a filter screen 5 is arranged in the dropper 4. The blood transfusion bag insertion needle 3 comprises a needle seat 32 and an insertion needle body 31; the needle sleeve 33 is sleeved outside the insertion needle body 31, and the insertion needle body 31 can extend and retract in the needle sleeve 33.

In order to achieve the purpose of telescoping, the rear end of the needle sleeve 33 is provided with a knob 34, and an inner extending cylinder 35 extending into the needle sleeve 33 is fixed on the knob 34; the inner extending cylinder 35 is provided with internal threads; the pin body 31 penetrates through the knob 35, and the pin seat 32 is in threaded fit with the inner extending barrel 35; the needle seat 32 is provided with an axial sliding groove on the side wall, and the needle sleeve 33 is provided with an anti-rotation projection 36 on the inner wall in the axial direction, wherein the anti-rotation projection is matched with the sliding groove. The four sliding grooves are evenly distributed along the circumference of the needle base 32, and the four anti-rotation lugs 36 are also arranged.

The tip of the sleeve 33 is closed with a film 38. The end of the pin body 31 is round, and the liquid inlet 37 is arranged on the side wall.

When stored, the pin body 31 is housed in the sleeve 33. When needed, the knob 34 is turned to rotate the inwardly extending barrel 35. The needle mount 32, which is threadably engaged with the internal barrel 35, can only move back and forth due to the anti-rotation projections 36, causing the pin body 31 to break the membrane 38 and extend out of the needle hub 33. The length of the insertion needle body 31 extending out of the needle sleeve 33 can be adjusted according to the thickness of the soft plug of the blood transfusion bag, so that the blood transfusion bag is prevented from being punctured by the insertion needle body 31 too long.

The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the spirit and scope of the invention, and such modifications and enhancements are intended to be within the scope of the invention.

Claims

1. A blood transfusion device comprises a Y-shaped catheter, wherein a saline bottle insertion needle and a blood transfusion bag insertion needle are respectively connected to a branch pipe of the Y-shaped catheter; the tail end of the main pipe of the Y-shaped catheter is provided with a connector connected with an indwelling needle or a scalp needle; the method is characterized in that: the transfusion bag contact pin comprises a needle base and a contact pin body; the needle sleeve is sleeved outside the needle inserting body, and the needle inserting body can extend and retract in the needle sleeve.

2. A blood transfusion apparatus according to claim 1, wherein: a knob is arranged at the rear end of the needle sleeve, and an inner extending cylinder extending into the needle sleeve is fixed on the knob; the inner extending cylinder is provided with an internal thread; the pin body penetrates through the knob, and the pin base is in threaded fit with the inner extending barrel; the needle seat side wall is provided with an axial sliding groove, and the inner wall of the needle sleeve is axially provided with an anti-rotation convex block matched with the sliding groove.

3. A blood transfusion apparatus according to claim 2, wherein: the spout is four along needle file circumference evenly distributed, the lug that prevents changeing also is four.

4. A blood transfusion apparatus according to claim 1, wherein: the top end of the needle sleeve is sealed by a film.

5. A blood transfusion apparatus according to claim 1, wherein: a dropper is arranged on the Y-shaped catheter main pipe, and a filter screen is arranged in the dropper.

6. A blood transfusion apparatus according to claim 1, wherein: the tail end of the main pipe of the Y-shaped catheter is provided with two ends, and connectors for connecting with an indwelling needle or a scalp needle are arranged on the two ends.

7. A blood transfusion apparatus according to claim 1, wherein: the contact pin body is round-headed at the end part, and an opening of a liquid inlet of the contact pin body is arranged on the side wall.